CN109996736A

CN109996736A - Polybag, especially FFS bags and for manufacture and for filling bag method and apparatus

Info

Publication number: CN109996736A
Application number: CN201780073172.3A
Authority: CN
Inventors: T.哈维希霍斯特
Original assignee: Windmoeller and Hoelscher KG
Current assignee: Windmoeller and Hoelscher KG
Priority date: 2016-09-27
Filing date: 2017-09-27
Publication date: 2019-07-09
Also published as: EP3519311A1; US20200122894A1; WO2018060277A1

Abstract

The present invention relates to a kind of polybags, especially FFS bags, it include the first wall and the second wall and in first wall and/or in second wall for making a ventilation opening for bag inner space ventilation, first wall and the second wall by lateral edges or side pleat and pass through bottom interconnection and limit bag inner space, wherein, at least one bottom includes weld seam, the weld seam stretches between the lateral edges and touches these lateral edges, it is characterized in that, the outside of at least one wall is provided at least one channel, the channel covers the ventilation opening, and the channel is formed at least through two parallel brackets and a cover strip, wherein, the cover strip equally includes ventilation opening, and wherein, the short line along the cover strip between the parallel bracket is greater than along at least The short line between the parallel bracket or the cover strip of one wall and/or the parallel bracket are made of the material that can be stretched.

Description

Polybag, especially FFS bags and for manufacture and for filling bag method and Equipment

Technical field

The present invention relates to a kind of polybags of preamble according to claim 1 and a kind of according to claim 9 preamble A kind of partial method and equipment of 2 preambles according to claim 1.

Background technique

FFS bags are that typically in equipment and are made, then load and last closed bag of hose track first.Here, FFS bags it will be appreciated that be at least the bag (filling weight) that the filler of 5kg loads with weight.It is typically even that there is at least 25kg Filling weight bag.Used hose track usually but simultaneously not only has side pleat.Thus therefore manufactured bag has first Wall and the second wall, first wall and the second wall are connected with each other by lateral edges or side pleat and by bottom.Thus limit Bag inner space.It is easily understood that these side pleats equally pass through lateral edges and the wall connects there are side pleat It connects.

When loading these bag (bag has had bottom at this time), problem occur in that being filled together with the filler The air entered to the inner space must leak out, so to keep the volume of the bag loaded as small as possible.In addition, Remaining air can result in the bag, and when the bag is accidentally hit on the ground from certain altitude, this bag can be easy open It splits.Furthermore, it is possible to weaken the stackable property of these bags.Therefore, conventional bag has ventilation opening, and the ventilation opening can include example Such as micropunch, although filler can not escape so that air can escape.WO 2007/087985 discloses two Channel, the channel are stretched and are fluidly connected in the longitudinal direction, and the channel constitutes labyrinth type aeration structure.Herein, described Ventilation opening can configuration it is bigger.However, required drafting efficiency is not usually enough, because in the past in known bag In several years, the filling capacity of the FFS system for the bag with the filling weight more than 5kg of mentioned kind constantly increases.

Summary of the invention

Therefore, the task of the present invention is propose a kind of bag with higher drafting efficiency and a kind of for manufacturing and using In the method and apparatus for loading these bags.

According to the present invention, which is resolved by whole features of claim 1.

Accordingly, polybag, especially FFS bags include the first wall and the second wall and include it is in first wall and/ Or in second wall for making a ventilation opening for bag inner space ventilation, first wall and the second wall by lateral edges or Person side pleat and pass through bottom be connected with each other and limit bag inner space, wherein at least one bottom includes weld seam, the weldering It is sewn on and these lateral edges or side pleat is stretched and touched between the lateral edges, according to the present invention, in the polybag, especially It is to be arranged in FFS bags, the outside of at least one wall is provided at least one channel, the channel covers the ventilation opening, And the channel is formed at least through two parallel brackets and a cover strip, wherein the cover strip equally includes leading to Air port, and wherein, the short line along the cover strip between the parallel bracket is greater than along at least one The short line between the parallel bracket or the cover strip and/or the parallel bracket of a wall by The material that can be stretched is made.

In the side towards the bag inner space or face of first wall and described second wall can also be referred to as Side, the side away from the bag inner space can accordingly be referred to as outside.Such bag has following extending directions, described to prolong Direction is stretched along the direction of maximum longitudinal axis, wherein this extending direction is parallel to outer seamed edge.As already mentioned that Sample, first wall and second wall are connected with each other and can integrally be constructed by two seamed edges.Here, the wall by The hose circular transverse to the extending direction forms or the case where constructing longitudinally extending overlapping regions by flat tracks Under be shaped to hose.Side pleat can be placed into such hose, wherein first wall passes through corresponding outer seamed edge and the side The corresponding first layer body of pleat connects, and second wall passes through corresponding outer seamed edge second layer body corresponding with the side pleat and connects It connects.Each first layer body of the side pleat is connect by interior seamed edge with each second layer body of the side pleat.Outer seamed edge and interior seamed edge are advantageously It is parallel to the extending direction stretching, extension of the bag hose or later.The width of the layer body of the side pleat defines the so-called of the side pleat Depth.

At least one described cover strip is fastened on to the outside of at least one wall using at least two brackets, it is described tight Gu in parallel thus the extending direction, at least one described cover strip constitute channel together with the wall to item.The cover strip exists This preferred covering ventilation opening, the ventilation opening introduce in the wall.According to the present invention, it in addition also sets up, described parallel The short line along the cover strip between bracket be greater than along at least one described wall the parallel bracket it Between short line or the cover strip.In other words, the width of the cover strip, which is greater than, puts, lies low when the wall is put down The spacing that the bracket has when in unique plane.In a preferred embodiment, the cover strip has at least One folding seamed edge, the inner wall of the cover strip is folded back on oneself along the folding seamed edge and/or the cover strip utilizes it Inner surface is fastened at least one described wall by bracket, and is fastened on using its outer surface by other bracket At at least one described wall.

The cover strip can be the component part of flat tracks, and in this case it is preferred that passing through two edges Overlapping regions is formed.In this case, the wall is made of two parts, and the cover strip is fastened on the wall, described Two parts are mutually fastened using bracket, wherein these brackets are the bracket of the cover strip simultaneously.

But the cover strip also can be individual item, which is fastened on a wall in described two walls On.In principle, or even it can be considered that multiple cover strips.

In a kind of alternative embodiment of the invention, individual item can even be fastened at least one wall At inside, introducing in the individual item has at least one ventilation opening.In this case, at least one wall in institute The function that the region between bracket undertakes the cover strip is stated, as in conjunction with as illustrated by above embodiment.I.e. this In the case of be arranged, the short line along the cover strip between the parallel bracket be less than along it is described at least one Short line of the wall between the parallel bracket.

The short line along the cover strip in another invention alternative solution, between the parallel bracket With along at least one described wall as short line between the parallel bracket, but in this case, institute Stating cover strip includes elastic material, that is to say, that the short line along the cover strip between the parallel bracket It is able to extend.

The bracket can be formed by materials described below, and the material is, for example, cold hardening adhesive, hotmelt The additive of (hot-melt, hot melt adhesive), extrudate or other realization fastening effects.However, bracket can not have Generated in the case where material additive, for example, by hot-air sealing or hot gas welding, by contact weld, pass through ultrasound Wave soldering connects or similar technique.The bracket alternatively also can include small discontinuities preferably without discontinuities, Air can pass through the small discontinuities and escape into environment from the channel.Such discontinuities can be covered with described The equivalent alternative solution of ventilation opening in cover fillet.

The present invention solves above-mentioned task by the above-mentioned mode of action.Either intentionally or unintentionally, it is filled out by described When material is filled into the bag, air is introduced together into always in the bag.Now, in bag according to the present invention, this Air can pass through the ventilation opening being introduced into bag wall and enter in the channel.Here, the ventilation opening can be it is big, so as to The air can be leaked out from the inner space of this bag within the shortest time.By the special characteristic of the cover strip or Fastening, the channel can be significantly increased now by the influence of air, and then can receive big volume of air.It is stored in institute Stating the air in channel can slowly be arranged by the ventilation opening in discontinuities in the cover strip and/or in bracket Be put into environment, wherein due to discharging slowly, do not take away the filler of this bag or hardly, therefore even if the filler one Fraction stays in the channel, and the filler also almost stays in the bag.Therefore, it can be filled out with extra high speed The bag is filled, without making the environment of bag filling station by the pollution of filler.Even if after the bag has enclosed, the channel Ventilation be also required to the long period.

In a kind of preferred configuration scheme of the invention, between the parallel bracket along the cover strip Short line is at least bigger by 3% than the short line along at least one wall.In this case, enough ventilation effects are provided Rate, wherein material used in simultaneously effective handling.In addition to this, it is advantageous between the parallel bracket It is most taller and bigger by 20% than the short line along at least one wall along the short line of the cover strip and particularly up to big 10%。

Also advantageously, being provided with the layer body being made of filtering material in the channel.Here, being arranged so the filtering Material, so that air has to pass through this filtering material, so as to reach the ventilation opening in the cover strip or arrival The discontinuities of the bracket.Here, the filtering material preferably by circular fastening seam be fastened on the cover strip and/ Or at least one described wall and/or the bracket.Such filtering material can be fibrous material (such as paper) or modeling Expect non-woven fabrics.The advantages of this embodiment, is, stops the filler by the filtering material, especially when the filler is When powdered filler.In a kind of expansion scheme, the filtering material can be even hygroscopic, so that passing through institute The moisture for stating ventilation opening entrance can be absorbed by the filtering material, so that the filler be protected to hurt from moisture as well as possible Evil.

In another advantageous embodiment of the invention, it is provided in the bag inner space by filtering material group At layer body, wherein the filtering material covers the ventilation opening of at least one wall.In this case advantageously, conduct Filtering material existing for material pieces is fastened at least one described wall using circular connection seam, so that air cannot It is enough to flow between wall and filtering material.The connection seam surrounds whole ventilation openings herein.It is also prevented from using this measure Filler enters in environment.

It is arranged in a kind of advantageous expansion scheme, the gas permeability of the ventilation opening at least one described wall is covered greater than this The gas permeability of cover fillet.It is generated for this purpose, the ventilation opening of the cover strip can be perforated by needle.Generating in this case has maximum The hole for the diameter for being 0.8mm.In conjunction with the needle perforate or with the needle perforation independently, usually can distinguish micropunch and Nanometer perforation, the micropunch is for example with (cm per cubic centimeter³) 5 density to the ventilation opening of 30, especially 13, institute Nanometer perforation is stated for example with (cm per cubic centimeter³) 50 density to the ventilation opening of 100, especially 64.The perforation It can for example be generated using substantially upper conical needle or using substantially cylindrical needle.It is logical at least one described wall Air port can be introduced by introducing small notch in a simple manner.For this purpose, it is preferable to use rotors.These features mentioned above Advantageous effect be: thus, it is possible to realize the especially quick end of this bag of inner space divulge information, wherein the air can It stores in the channel, so that it to be slowly discharged into environment.Therefore, the air of filler and evolution can be effectively prevent It is discharged together to environment.Avoid filler using micropunch explained above or nanometer perforation evolution particularly well.

It is arranged in another advantageous embodiment of the invention, ventilation opening and at least one bottom of the cover strip The distance preferably at most long half of bag, especially preferably at most this bag long of one third.Especially, at least one described bottom refers to Lower bottom part when the bag described in the filling substantially perpendicularly positions.This is manufactured first in FFS machine simultaneously Bottom.In this case, especially when the ventilation opening being introduced into wall be arranged in the top of this bag, during the filling Not yet closed end when, realize mazy guidance to the air being introduced into together with the filler.Therefore, the filler The part entered in the channel can not find and directly lead to the road of environment, to avoid pollution environment.

Furthermore it is advantageous that the polybag has side pleat, and the ventilation opening of the cover strip has with nearest weld seam At least one distance, wherein the distance corresponds to side pleat depth.It on the one hand can be realized the ventilation in the wall as a result, Mouth and the maximum distance between the ventilation opening in the cover strip, to realize maximum labyrinth effect.Also add following effects It answers.Rectangle is presented in the bag being filled, wherein the side pleat is holded up and forms side wall.The end of antetheca and rear wall lower section The end regions of region and top accordingly fold and form bottom faces and top surface.If the present ventilation opening with it is described Weld seam has specified distance, then these ventilation openings are in the bag being filled always in the antetheca or the rear wall area In domain, so that if there is also ventilations after the bag was fallen by level can when the channel is arranged at upside It can property.

It is arranged in a kind of advantageous embodiment of the present invention, the polybag includes side pleat, and the channel exists Extend at least one outer turning or interior turning of a side pleat in the side pleat.It means that the cover strip also exists Extend on turning at least one outer turning or at least one.This can mean that at least one bracket is located at institute It states at a wall in the wall of side pleat or a bracket is located at first wall of this bag and a bracket is located at the bag The second wall at.In this embodiment advantageously, the channel of the bag being filled is at least partially situated at the side In a lateral position so that the ventilation opening will not be sealed by preceding bag or subsequent bag unintentionally herein. Therefore, (slow) ventilation in the channel is not interfered, so that the bag can be preferably with set until its stacking The rectangle set.In the variant schemes that the cover strip is only stretched over above outer turning, this cover strip can be directly about institute It places at the outer turning mentioned, wherein identically constructed in the cover strip to have outer turning.It automatically generates herein according to the present invention Introduction.

Task mentioned in the beginning is resolved also by method according to claim 9.Therefore, for manufacture and For in the method for filling bag,

The reel for having hose track is provided,

The hose track is unfolded from the reel in decoiling equipment,

The hose track has bottom in the preceding end of this bag in bag formation device, preferably horizontal by generating There is bottom to weld seam,

Hose part is separated from the hose track in the bag formation device,

The hose part is transported to filling equipment by means of the holding element of movement,

The bag is loaded using filler, wherein the air of the inside of the bag is entered together with the filler at least partly Ground is exported at least one outer wall of the bag outward by ventilation opening,

The air is directed into the channel on the outside of wall,

It is arranged in the method,

The volume in the channel is become larger and the air is directed in the channel, and the channel covers the ventilation Mouthful, and the channel is formed at least through two parallel brackets and a cover strip, wherein the cover strip equally includes Ventilation opening, and wherein, the short line along the cover strip between the parallel bracket is greater than along at least The short line between the parallel bracket or the cover strip of one wall and/or the parallel bracket It is made of the material that can be stretched.

It is guided in the channel being configured according to the present invention by the air, the filler can be filled at high speed In the bag, wherein the channel can extend strongly.Therefore, the air being packed into together with the filler can be from this bag Export comes in real packing cavity, and this air does not enter in environment.Latter fact of case is important, because this is filled out A part of material with rapidly export air be usually also entrained.But according to the present invention, air and filler reach to be used as and delay In the channel of storage.The air progresses into environment from here, wherein the drafting efficiency in environment is entered from the channel It need not be especially big.

It is arranged in the advantageous configuration scheme of another kind of the invention, after the filling, the bag is at least through it The holding element that he can move is transported to locking device, and the bag described in the locking device is sealed at its second end It closes.Either conveying or closing can carry out at high speed, because being directed to inside the bag together with the filler Air has substantially been exported in the channel now, thus the top area laid flat, can easily by means of Welder welds.Especially in the channel in the embodiment that the lower section of later top welding seam terminates, when necessary Still the channel of expansion is not also harmed in this case.

In another configuration scheme according to the method for the present invention, carry out closing it at the second end of the bag Afterwards, the bag is placed in conveying device, so that the side that the cover strip is directed toward upside and/or is directed toward in side Face.In this case, the air still located in the channel can be exported by the second ventilation opening, wherein this process It can slowly carry out.When the bag being filled is stacked on pallet, ventilation substantially completely must be just carried out.Until stacking Until also for some time, which can be used for making the channel to divulge information.But when the channel by the ventilation opening with When environment contacts, ventilation becomes simpler.In contrast, when the bag lies in bearing surface (such as conveyer belt) using channel side When upper, ventilation will do it not fast enough.

Task mentioned above is also obtained by the equipment according to claim 12 for manufacturing and for filling bag It solves.Therefore, equipment mentioned above includes:

Decoiling equipment, in the decoiling equipment, hose track can be unfolded from reel,

Bag formation device, in the bag formation device, the hose track can have in the preceding end of the bag There is bottom, wherein be preferably provided for generating the welder of cross weld, also, in the bag formation device, hose Part can be separated from the hose track,

The hose part can be delivered to filling equipment using the holding element by the holding element that can be moved,

Filling equipment can load the bag using filler in the filling equipment, wherein together with the filler into Enter to the air of the inside of the bag to export to outward at least one outer wall of the bag at least partially through ventilation opening In, wherein the air can be guided in the channel on the outside of wall for being located at the bag,

It is provided that,

It is provided at least one device for being conducive to ventilation, can be convenient for the air being directed to the channel using described device In, wherein the volume in the channel becomes larger, and the channel covers the ventilation opening, and the channel is flat at least through two Capable bracket and a cover strip is formed, wherein the cover strip equally includes ventilation opening, and wherein, described parallel The short line along the cover strip between bracket be greater than along at least one wall the parallel bracket it Between short line or the cover strip and/or the parallel bracket be made of the material that can be stretched.

The component part that such configuration manufacture and stuffing apparatus according to the present invention is referred to conducive to the device of ventilation, makes It obtains the manufacture and stuffing apparatus itself or facilitates air using the movement that the manufacture and stuffing apparatus are able to carry out and escape to In the channel.It is particularly preferred to which device as such configuration, allows the device to the characteristic for not influencing the channel. In other words, there is also functionality after the device plays a role.

It is arranged in advantageous first configuration scheme of the invention, the device for being conducive to ventilation includes at least one welding Pincers, the welding clamp adapt to the profile in the region of the cover strip of the bag.Especially, this can mean that, should The profile of at least one welding clamp includes flat upper surface, using at least one welding clamp be capable of forming bottom seam or Top seam, however the flat upper surface includes recess in the region where the channel.Guarantee in this way The channel is damaged not by excessively high temperature and/or not by excessively high pressing force and/or not by too long weld interval.Damage example It such as can be the fusing of the cover strip, this opening that will lead to air and filler and can pass through unintentionally enters in environment.

The device conducive to ventilation is provided in another preferred embodiment of the invention, which includes at least one A conveying roller and/or guide roller, see in the axial direction, and the diameter of the conveying roller and/or guide roller is variation.Especially it is arranged, This conveying roller and/or guide roller include recess, and the recess is for guiding the channel.It means that hose wall is located only within Region except the channel lies in the conveying roller or guide roller when by means of the conveying roller or guide roller conveying On outer surface.

Advantageously, in the device in accordance with the invention, the device for being conducive to ventilation includes the guidance of at least one track Device can guide the hose track using the track guide device, wherein the hose part packet generated from the track Cover strip is included, the cover strip is directed toward the direction of the bag formation device in the packing station.This track guide device exists This can be made of induction element (such as rail-guided roller), and the induction element so guides the hose track, so that institute The feature mentioned is accomplished.Track guide device also can include decoiling equipment, which includes unwinding shaft, the uncoiling Axis can rotate in two rotational directions.Therefore it can correspond to target unwinding hoses track reel given above.At this In the case of kind, it need not notice that specific direction is directed toward in the channel when winding the hose track.But track guide device It can include turning to station, which changes the position in the channel, if this is required.The cover strip is directed toward the hose Formed device direction embodiment the advantages of be, it is being filled, be arranged in the conveying direction it is just to be loaded Bag before bag can not interfere the stretching, extension of bag currently to be loaded.Therefore it ensure that the good ventilation of this bag.

It is arranged in a kind of advantageous embodiment of the present invention, the device for being conducive to ventilation includes at least one placement Equipment, using the arranging apparatus, the bag can be placed to conveying by its top in the way of being directed toward conveying direction and set It is standby upper, so that the side that the cover strip is directed toward upside and/or is directed toward in side.Here, it is described be conducive to ventilation Device can be the nipper (Greiferzangen) of impact components (e.g. bar), plate or the even closing station.Herein Setting, the impact components can move on the conveying direction of this bag, and at least at the top of the impact components and this bag It can at least partly be moved in the period of region touch type contact with conveying speed, which is greater than the instantaneous of this bag Conveying speed.The top half that the top area of this bag is preferably this bag is (also vertically fixed after this bag is in the filling To when), the especially upper one third of this bag.Since impact components or the device of same purpose play a role, which is easy It overturns in the conveying direction, so that this bag is laid flat on one's back and is carried away by means of conveying device, wherein the main shaft of this bag is excellent Conveying direction is directed toward in choosing.The bag can be arranged into the conveying device using this embodiment, so that the channel Side is pointed up and/or is directed toward, so that the air of storage in the channel can pass through the ventilation opening of the cover strip It discharges in a longer period of time to environment, and filler does not escape out herein yet.

In addition, can be arranged in a kind of advantageous embodiment of the present invention, the device for being conducive to ventilation includes extremely A few shaking device can be such that the filler vibrates using the shaking device.Such shaking device can be pinking dress It sets, the detonation device is worked with large amplitude but with low frequency.Alternatively, or additionally, this shaking device can be Following vibration machines, the vibration machine is with lower amplitude but with the work of higher frequency.Shaking device can be direct Ground is applied on the bag by intermediary element (such as conveyer belt of support device or conveying device).Preferably, institute The lower section that shaking device is arranged in the packing station is stated, so that the filler is when loading this bag or immediately in the filling It can be applied on the bag later.In this case, the air being encased in the bag together with the filler can leak Out into the channel.Shaking device also advantageously is disposed in the region of conveying device, and bag lies low after the closing In the conveying device.In this case, the surplus air in this bag can also escape in the channel, then leak out Into environment.

Detailed description of the invention

It is detailed with reference to attached drawing in the explanation by learning other advantages, features, and details of the invention in following explanation Illustrate different embodiments.Here, the feature mentioned in the claims and specification can either individually, also can be with each other Arbitrarily be important for the present invention in combination.Under the frame of entire disclosure, in conjunction with according to the present invention Feature illustrated by method and details are also suitable when combining equipment according to the present invention, and vice versa, so that in this hair It always mutually refers to or can mutually refer to always in terms of the summary of the invention of bright various aspects.This is equally applicable to according to this The disclosed feature of the bag of invention, the feature is equally also with feature according to the method for the present invention and/or according to the present invention Equipment feature any combination, vice versa.In conjunction with other feature descriptions or it is stated that feature also can be and this The feature according to the present invention of other arbitrary features of a little features independently individual feature either combination.Also can mutually join Examine the combination of these features.Each attached drawing is shown:

The section of the first embodiment of Fig. 1 bag according to the present invention,

The section of the another embodiment of Fig. 2 bag according to the present invention,

The section of the another embodiment of Fig. 3 bag according to the present invention,

The section of the another embodiment of Fig. 4 bag according to the present invention,

The section of the another embodiment of Fig. 5 bag according to the present invention,

Fig. 6 is used for the schematic diagram for the step of manufacturing bag according to the present invention,

Fig. 7 is used to manufacture the schematic diagram of another step of bag according to the present invention,

Fig. 8 is used to manufacture the schematic diagram of another step of bag according to the present invention,

A kind of longitudinal profile of embodiment of Fig. 9 bag according to the present invention,

The longitudinal profile of the another embodiment of Figure 10 bag according to the present invention,

The principle sketch of the first embodiment of Figure 11 FFS system according to the present invention,

The principle sketch of the another embodiment of Figure 12 FFS system according to the present invention,

The schematic diagram of component of the Figure 13 in FFS system according to the present invention,

The schematic diagram of roller of the Figure 14 in FFS system according to the present invention.

Specific embodiment

Fig. 1 shows the section of the first embodiment of polybag 1 according to the present invention.The polybag includes the first wall 2, should First wall is rear wall in this example.This first wall is connect by side pleat 3,4 with the second wall 5, which is antetheca.Side pleat 3,4 two side pleat walls 6 ' and 6 ' ' or 7 ' are respectively included and 7 ' ', wherein side pleat wall 6 ' and 7 ' pass through outer seamed edge 8 with the second wall 5 ' by outer seamed edge 8, ' ' or 9 ' ' connect with the first wall 2 for ' perhaps 9 ' connection and side pleat wall 6 ' ' and 7 '.Side pleat wall 6 ' and 6 ' ' either 7 ' and 7 ' ' is connected with each other by interior seamed edge 9 or 10 respectively.

Antetheca 5 passes through first area 11 and the formation of second area 12.The edge 13 of first area 11 is tight using bracket 14 Gu inside towards bag at 5 upper surface.Item across bracket 14 forms cover strip 16, which covers the second wall 5 Ventilation hole 17.Cover strip 16 is connected to the external upper of the first area 6 of the second wall 5 using its edge 18 by bracket 19 Place.In this case, cover strip 16 is fastened at first area 6 using its external upper, thus construct u shape pleat 20 or Person constructs the double layer area of the cover strip in a flattened condition.Channel 21, the volume energy in the channel are constructed in this way It is enough to change in king-sized range.In addition, this channel further includes ventilation opening 22, so that entering inside bag described Air in channel can escape in environment.

Cover strip 16 and the region 12 of antetheca 5 can be separated by bracket 14.

It is preferably provided with filtering material 23 at the upper surface towards the channel of cover strip 16, which passes through Two brackets 24 are fastened at the cover strip.

Fig. 2 shows another embodiments of polybag 1 according to the present invention.In the present embodiment, setting z shape pleat 26 replaces The u shape pleat of cover strip 16, the z shape pleat are generated by generating twofold.The folding of z shape is distinguished by, and is constructed herein Three layer bodies.Even if the z shape pleat can be also arranged in it can be seen that z shape pleat 26 is arranged in the region of bracket 19 in Fig. 2 Any position between bracket 14 and bracket 19.Also it can be considered that multiple z shape pleats 26.

In the embodiment of fig. 3, the cover strip 11 of valve bag 1 even includes z shape pleat 21 and u shape pleat 15.

It can be combined with each other in any way according to the feature of the embodiment of Fig. 1 to 3.But it is important in all cases , by cover strip 16 between bracket 14 and the bracket 19 in the accompanying drawings it can be seen that the path that determines of lines Length be greater than by the second wall 5 between bracket 14 and bracket 19 in the accompanying drawings it can be seen that lines determine path Length.It is preferred here that length difference is at least 3%.

Fig. 3 shows another configuration possibility, the configuration possibility also can with it is every other disclosed in this application Embodiment combination.In this case, cover strip 16 is fastened at the region 11 of antetheca 5 using third bracket 27.This Channel 16 is divided into the first subchannel 28 and the second subchannel 29 by three brackets 27, wherein ventilation opening 17 is logical from inside bag 15 Into the first subchannel 28.Ventilation opening 22 is led in environment from the second subchannel 29.It is now sub from first in order to enable air to Channel 28 enters in the second subchannel 29, and the bracket includes at least one discontinuities.Preferably, described at least one Disconnected portion is so long, so that the drafting efficiency of this bag is not damaged.

Different from the embodiment according to Fig. 1 to 3 in the embodiment according to Fig. 4, cover strip 16 is configured to individual work Part.Therefore, which does not construct integrally with a part of antetheca 5.This individual cover strip 16 passes through two brackets 14, it 19 is fixed on the antetheca 5 of the valve bag.It is shown as example, cover strip 16 all includes u shape pleat in two edge 20.The antetheca 5 and rear wall 2 of polybag 1 can be made as hose, such as pass through blown film extrusion process or circular woven technique.But It is that also hose can be made by flat tracks, wherein two lateral side regions turnup when overlapped for construction, and wherein, Overlapped, and edge is connected by joint close.

Fig. 5 shows another embodiment, and in Fig. 5, cover strip 16 is ' upper to extend at outer turning 8.Bracket 14 is located at antetheca 11 Place, and bracket 19 is arranged in the ' place of side pleat wall 7.As shown in figure 5, ventilation opening 17 can be arranged in side pleat wall 7 ' in.The covering Item can also extend on other outer turning or extend on multiple outer turnings.In view of the edge u shape configuration and/or Z shape configuration, the cover strip can be according to attached drawings in Fig. 1 to 4 or a combination thereof come configuration.But in the present embodiment In can also be not provided with u shape or z shape folding part (Umfaltung) unlike this, but instead turn outside Angle 8 ' region in folding part (Umfaltung) is set, however, this folding part (Umfaltung) and this outer turning interval It opens, so that the distance along the cover strip between bracket is greater than along the antetheca and the side pleat wall according to the present invention 7 ' distance.

Fig. 6 shows according to the present invention for manufacturing several steps of the method for polybag.In this regard, first from unshowned Flat tracks 50 are unfolded on decoiling equipment.Then, it is aerated the unshowned introducing again of mouth, the ventilation is exemplarily shown Several ventilation openings 22 in mouthful.These ventilation openings are not preferably introduced continuously on the longitudinal direction of the flat tracks, but periodically Ground (taktweise) introduces.For this purpose, roller can be rolled on the flat tracks, the circumferential surface of the roller is only partly equipped with There are needle set, cutting element or stamping tool.Alternatively, or additionally, it can be arranged, introduce such roller should It is contacted at the position of ventilation opening 22 with flat tracks 50.For this purpose, adjustment mechanism can be arranged, the adjustment mechanism is periodically (taktweise) roller is contacted with the platform track.Here, the flat tracks preferably advance in counter roller.

Ventilation opening 17 can be introduced into an identical manner in flat tracks 50.But roller is shown in this case Son 51 generates single, short notch using the roller in flat tracks 50.The circumferential surface 52 of roller 51 is thus equipped with cutter 53, wherein two adjacent cutters can correspondingly be angled with respect to each other, especially right angle.Also it can be adjusted for the setting of roller 51 Complete machine structure, the adjustment mechanism periodically (taktweise) contact the roller with the flat tracks.For roller 51 Adjustment mechanism independently works with the adjustment mechanism mentioned in the preceding paragraph, because ventilation opening 12 and 17 is in the defeated of the flat tracks It send and is preferably introduced to dislocation on direction.

After introducing ventilation opening 17 and before or after introducing ventilation opening 22, can be coated with to flat tracks 50 Filtering material 55, the filtering material are fastened at flat tracks 50.This filtering material can be applied to institute in the form of track It states on flat tracks.For this purpose, the filtering material can be provided reel and be unfolded in expanding unit.In order to fasten this Filtering material can be arranged, and the filtering material has just had the adhesive strip there are two side under its roll form.But Advantageously, two jointing material traces 56,57 are coated on the flat tracks and/or on the filtering material of track shape, Wherein, ventilation opening 17 is fully located in these jointing material traces.The jointing material trace can include disperse adhesive, heat Melt adhesive or cold glue；But they also can include extrudate.In the latter case, plastics convert in an extruder It is coated by nozzle as trace at melt form, and in this form.Preferably, the jointing material trace is being coated The filtering material of the flat tracks and the track shape is bonded together at once later, this is indicated by arrow 58, and And mutual extrusion --- such as right by means of unshowned pressure roller --- and flat tracks and described are also cooled down when necessary The filtering material of track shape.

In another embodiment, filtering material 55 can be also applied on the flat tracks in the form of note, Wherein, it is at least designed in this way the filtering material, so that the ventilation opening 22 focused in surface segment is completely covered in it.In order to mention For the filtering material of note form, it is able to use prefabricated note.It is preferable, however, that there is also roll forms herein Filtering material, the filtering material are separated into strip of paper used for sealing by separating tool (such as passing through cutting tool).Jointing material trace is excellent Choosing is coated on flat tracks 50, wherein circular jointing material trace is generated, to pass through the sky of the filtering material Gas can not be leaked out by the notch in the jointing material trace.

When ventilation opening 17 should be covered with filtering material, the illustrated place for being used to apply filtering material can be also utilized Reason method.

The turnup of the lateral side regions of flat tracks 50 is shown in FIG. 7, wherein preferably introduce the side according to Fig. 1 simultaneously Pleat 3 and 4, and wherein, construct two regions 11 and 12 of rear wall 2 and antetheca 5.Herein, it is advantageous in fixed position Place, the degree of 11 turnup of region have been above region 12.It is preferred that before 12 turnup of region or period has just generated u shape pleat 20.Also can introduce substitution or additional folding part.However, it is likely that can also draw after the turnup of region 11 and 12 Enter illustrated pleat.

Fig. 8 shows the region 11 and 12 of turnup, and the region is mutually fastened using bracket 14 and 19.For this purpose, Two extrusion nozzles are set in a kind of advantageous embodiment, the extrusion nozzle by least two parallel traces forms at least A kind of plastic material of fusing is introduced between region 11 and 12, and therefore limit channel 21.It is not shown using at least one Pressurizing unit (such as pressing roller) can make region 11 and 12 along bracket 14 and 19 be connected with each other, held so as to generate It is long and firmly connect.At least one cooling device can be set, so as to especially when the bracket is under fuel factor The bracket can be cooled down when generation.The cooling device can include in the pressurizing unit.It therefore can be for example cold But pressing roller.

The method and step illustrated according to Fig. 6 to 8 can be executed using blown tubular forming apparatus, the blown tubular forming apparatus energy It is enough to be formed together the system for forming polybag by flat tracks material with equipment according to the present invention.

The manufactured bag (referred to as " bag ") 101 in Fig. 9 it can be seen that in FFS technique, the bag preferably by according to Fig. 1 extremely The hose of 7 embodiment is made.In order to manufacture bag 101 by such hose, this hose has in its preceding end first The so-called bottom welding seam of weld seam 120(), which stretches (cross weld) transverse to the principal spread direction of bag 101, then from institute It states hose and is separated into the hose part with desired length, to generate top, unclosed bag end.By means of conveyer Structure brings the hose part to packing station, and the conveying mechanism is grasped in the region of the upper end of this bag (angreifen), the conveying mechanism is, for example, conveying fixture.In the packing station, the unclosed end of this bag is opened, To generate filling port, filler can be received in via the filling port.In the packing station, especially during filling, The bag is kept by holding mechanism, clamp is advantageous herein.In addition, this bag passes through other after filling the bag Conveying mechanism is brought to closing station, and the conveying mechanism is grasped (angreifen) in the region of the upper end of this bag again, Weld seam 121 is generated in the upper end of this bag in the closing station, to close the bag.This weld seam is equally lateral weldering Seam, the weld seam can also be referred to as top welding seam.

, it can be seen that the second wall 5 extends to and beyond the weld seam.As illustrated, wall 5 includes channel 21, which passes through the bracket 14 and 19 that can not be seen herein by limit.In addition it is possible to find out, ventilation opening 22 It is arranged to than ventilation opening 17 closer to the bottom of valveless.Preferably, the spacing maximum of ventilation opening 22 and bottom 102 is the long L of total bag One third, be preferably at most a quarter, especially 1/5th.When bag 101 does not load also and wall 2 and 5 also has When the contact at least partly mutually touched, the long L of bag refers to the most short spacing between weld seam 120 and 121.

It is arranged in turn, ventilation opening 22 is arranged to than ventilation opening 17 closer to top welding seam 121.Preferably, ventilation opening 12 Spacing maximum with weld seam 121 is the one third of the long L of total bag, is preferably at most a quarter, especially 1/5th.Due to Arrangement mentioned above and especially because the mutual spacing of the ventilation opening, the air of leakage must be walked in channel 21 Longer distance is crossed, the flowing velocity of the air of leakage is thus reduced, to reduce the entrainment (mitrei en) of filler.

Figure 10 shows another embodiment of bag according to the present invention.This embodiment and the embodiment according to Fig. 9 It is similar.But difference is that cover strip 16 does not extend to bottom welding seam 120 and/or top welding seam 121, but one end thereof exists Terminate in region between ventilation opening 22 and bottom welding seam 120, another end is between ventilation opening 17 and top welding seam 121 Terminate.In this embodiment, the end of the cover strip preferably passes through other bracket 130,131 and is fastened at wall 5, so as to Realize sealing of the channel 21 relative to environment.The bracket preferably laterally extends stretching, extension in the longitudinal of bag 101.

Figure 11 shows the principle sketch of FFS system 200 according to the present invention.This FFS system is arranged for manufacturing, loading There is the bag of the filling weight more than 5kg with closing.

Firstly, 202 form of coiling is unfolded in decoiling equipment 203 around the hose 201 risen.Especially by preceding withdrawing roll pair 204 realize expansion on the R of uncoiling direction, and withdrawing roll can be by before at least one of preceding withdrawing roll of two of preceding withdrawing roll pair It rotates and drives in driver.It can be arranged preferably in the form of trip gear before or after the preceding withdrawing roll pair Orbiting memory device, to even if also can when removing the hose from the coiling at a substantially constant speed Execute needed in the FFS system, periodically to the preceding drawing of the hose.

Cover strip 16 is indicated using wave 205, wherein herein importantly, this cover strip is in shown position The place of setting is arranged on the upside of the hose.In other words, the cover strip is arranged in the outside for the hose being wrapped on the coil On.

Withdrawing roll is abutted to 204 and when necessary before first welder 206 can be arranged on the conveying direction of the hose Trip gear downstream, the corner welding (Eckabschwei of such as hose is able to carry out using first welder Ungen), supplement (erg ngende) transverse weld and/or longitudinal measure, the transverse weld of the supplement fully or Partly cover (erfassen) described hose on the width of the hose.It in the conveying direction can in further process Cooling device 207 is set, the welded connecting generated can be cooled down again using the cooling device.Instead of the welder and/ Or cooling device or other than the welder and/or cooling device, other processing unit (plant)s can be also set, such as wear Hole equipment and/or stamping equipment, other described processing unit (plant)s can be such that the hose has to preferably handle later bag There are perforation or punching.

Followed by deflection roll 208, which is supplied to the hose by two other rollers 209 and 210 group At LD device.For this purpose, roller 209 and 210 can be displaced relative to each other, to pass through the movement for changing the hose Distance can correct the weld seam of the hose, position using subsequent processing unit (plant), can also correct this The position of the characteristic of the coining of hose or other regularity repeatedly.

After being directed over other deflection roll 211, the hose is directed by other preceding withdrawing roll to 212 In combined type transverse weld and separator 213.It sees in feed direction, this device 213 includes for described soft first The transverse weld equipment of bottom seam is generated at pipe.Adjacent lateral separation equipment, utilizes this below this transverse weld equipment Lateral separation equipment separates hose part from the hose, in time by cross weld directly in the preceding process-cycle It is mounted at the hose part.Before separation, unshowned conveying mechanism has grasped the hose part and (has also borrowed when necessary Help other conveying mechanisms) this hose part is taken in packing station 214.

Holding mechanism is located in the packing station, and the holding mechanism secures the above hose part or bag 101, to make This bag is obtained to stay in during filling on substantially vertical position.Same unshowned opening device can be used in opening this bag Filling port, so as to which feed hopper 215 to be directed in bag inside.Then, the filler can be filled into the bag, this It is shown by arrow 216.During filling, the bag, which can be lain in, to be supported on device, so that may be also completely not cold But bottom welding seam is not too strongly by load.In the shown embodiment, the support device is illustrated as conveying device 217, described Conveying device is also provided with other than the support function for bag to be continued on to subsequent station.In addition, being provided at least one A vibration and/or detonation device, the vibration and/or detonation device can be on from external actions to the bag, will pass through this Kind mode makes this bag movement, for example vibrates.This vibration and/or detonation device can be integrated in the support device.Pass through The vibration and/or detonation device can compress the filler.It means that the air evolution being also in the filler and example Such as leaked out by the ventilation opening.

Move the bag loaded on conveying direction z using conveying device 217, wherein unillustrated conveying mechanism is (excellent Choosing is fixture) bag is kept in the upper end, on the one hand to prevent the bag from falling down and described two walls to be kept to touch Touch contact, so as to install the top welding seam of definition.This top, which is welded in closing station 218, to carry out.The Welder Tool is indicated by two arrows 219.The arrow shows the direction of motion of the component of the soldering appliance.

Optionally, cooling stations 219 can also abut closing station 218, the cooling stations be configured to it is similar to the closing station, but Being includes that cooling of tool replaces soldering appliance, so as to the cooling weld seam generated to close this bag and therefore can at once by Load.

In the further process, the bag for still placing arrangement vertically is transitioned into bed flat position, such as ' is shown using bag 101 As out.In this case, the element of FFS system is applied in top area so that this top area with than It is moved on conveying direction z by the smaller speed of bottom section that the conveying device continues movement.This cause bag 101 ' It is conveyed in further process with preceding bottom.Therefore, the cover strip and the ventilation opening are located above, and are ascended the throne In this bag on the wall of conveying device 217.In this way, also not for the air that is loaded into together with the filler The case where leaking out completely, is also further ensured that the ventilation of this bag.

Illustrated speed difference can be caused by following situations: for example described soldering appliance, cooling of tool and/or conveyer Structure does not discharge the bag also completely, and the conveying device has made the bag continue to move.Alternatively, bar can be provided with 220, which stretches in a lateral direction and is for example fixedly placed in FFS system.

In the embodiment that this is shown in FIG. 11, in conveying direction z, the cover strip of this bag is arranged in preceding On wall.In view of the later transfer position with " bottom is preceding ", this embodiment can be realized in a simple manner, because The machine element of individual movement is not needed.It should be noted that packing station 214, closing station 218 and the cooling stations phase Mutually have enough spacing so that preceding bag so do not touch consumingly followed by bag so that the cover strip Pressed flat.In this case, ventilation characteristic can become invalid.

In the alternative embodiment of Figure 12, the hose is above being unfolded compared with Figure 11 along opposite uncoiling direction R ', So that being located at herein again by the cover strip shown in wave 205 on the downside of the hose.Alternatively, it can also set It sets according to the uncoiling direction R of Figure 11 and herein using coil, the hose is wound into this way on the coil, so that described cover Cover fillet is inwardly directed.Two measures being previously mentioned result in: subsequent in conveying direction z especially in the packing station Wall support air duct slats so that this air duct slats in the packing station can not by other bags obstruction expand, So as to receive volume of air as big as possible.

Compared with Figure 11, FFS system itself (including cooling stations 219) is all constant.Therefore, the appended drawing reference of Figure 11 and Declaratives can be transferred on Figure 12, but for the sake of clarity be saved.However, in the FFS system 200 according to Figure 12 In must accelerate the bag using the top of this bag, it is described defeated to take this bag to the preceding position to lie low of top seam It send on device.For this purpose, such as bar 220 can be hung in the rotating device.For example, the bar can be prejudicially arranged at turntable, The rotation axis of the turntable is parallel with the extending direction of bar 220.Therefore, bar 220 is able to carry out the movement on 221 direction of arrow And it therefore can speed up the top area (assuming that rotation speed is sufficiently high) of this bag.But many embodiments are all herein Be it is possible, the embodiment is all included together in present inventive concept.

Figure 13 includes component 300, which is preferably able to be put into FFS system 200, even if covering to have in processing Safe operation is also ensured that when the hose of cover fillet.This component is the plier of welder, can be by example using the welder As top welding seam and/or bottom welding seam are arranged at the hose, hose part and/or bag.The component part of this component is two A plier 301 and 302, the component are, for example, the welding clamp heated.Plier 302 has slot 303, the position of the slot and the cover strip It matches.It is achieved that plier 302 is at all parts for the wall that heat to be utilized loads all with identical heat transfer quilt Load, to be suitably constructed such as weld seam.If plier 302 does not have slot 303, it may happen that the covering Item is by burn-through and therefore destroyed, and other regions of the wall do not obtain enough heats for welding.The plier It can be the component part of the cooling device in the FFS system.

Figure 14 shows roller 400, which can be set as deflection roll in FFS system according to the present invention, conveying Roller, transport roller, preceding withdrawing roll and/or guide roller.It is provided with the region 401 with following diameters, which is less than remaining region 402 Diameter.In order to generate such roller 400, first roll body of the manufacture with diameter constant in roller length.Then, in area It is able to carry out machining in domain 401, such as passes through torsion or milling.In equally advantageous embodiment, it can be arranged The roll body of roller 400, the roller has consistent diameter on entire roller is long, wherein sleeve can shift the region of the roll body onto On.Then, these sleeve forming regions 402.It can be turned in the axial direction and shifting and/or replacing sleeve in this way It moves the position in region 401 and/or makes the change width in region 401.Roller 400 is by the bolt 403 in rack or passes through the FFS The installation part of system is supported in a manner of it can rotate.

Roller 400 is preferably provided at such position in the FFS system, must so guide institute at these locations Hose is stated, so that the cover strip is towards roller surface.Using the conventional roll period of the day from 11 p.m. to 1 a.m in length with constant diameter, Neng Goufa Raw, uneven due to touching face, the hose is stretched to side.This is avoided by setting roller 400.

Claims

1. polybag, especially FFS bag comprising:

First wall and the second wall, first wall and the second wall are connected with each other simultaneously by lateral edges or side pleat and by bottom And limit bag inner space,

Wherein, at least one bottom includes weld seam, and the weld seam stretches between the lateral edges or side pleat and touches this A little lateral edges or side pleat,

In first wall and/or in second wall the ventilation opening for making bag inner space divulge information,

It is characterized in that,

The outside of at least one wall is provided at least one channel, the channel covers the ventilation opening, and described logical Road is formed at least through two parallel brackets and a cover strip, wherein and the cover strip equally includes ventilation opening, and its In, the short line along the cover strip between the parallel bracket is greater than along at least one wall described Short line or the cover strip and/or the parallel bracket between parallel bracket are by the material that can stretch Material is made.

2. polybag according to claim 1,

It is characterized in that,

The short line along the cover strip between the parallel bracket than along at least one described wall most Short-circuit journey is at least big by 3%.

3. polybag according to any one of the preceding claims,

It is characterized in that,

The layer body being made of filtering material is provided in the channel.

4. polybag according to any one of the preceding claims,

It is characterized in that,

The layer body being made of filtering material is provided in the bag inner space, wherein the filtering material covering is described logical Air port.

5. polybag according to any one of the preceding claims,

It is characterized in that,

The gas permeability of ventilation opening at least one described wall is greater than the gas permeability of the cover strip.

6. polybag according to any one of the preceding claims,

It is characterized in that,

The ventilation opening of the cover strip is preferably at most the long half of bag at a distance from least one bottom, is especially preferably at most that the bag is long One third.

7. polybag according to any one of the preceding claims,

It is characterized in that,

The polybag has side pleat, and the ventilation opening of the cover strip and nearest weld seam have at least one distance, In, the distance corresponds to side pleat depth.

8. polybag according to any one of the preceding claims,

It is characterized in that,

The polybag has side pleat, and the channel is prolonged at least one outer seamed edge of the side pleat or interior seamed edge It stretches.

9. for manufacture and for filling bag, especially in accordance with the method for bag described in any one of the claims, In,

The reel for having hose track is provided,

The hose track is unfolded from the reel in decoiling equipment,

The hose track has bottom in the preceding end of the bag in bag formation device, preferably passes through generation Cross weld and have bottom,

Hose part is separated from the hose track in the bag formation device,

Wherein, the air is directed into the channel on the outside of wall,

It is characterized in that,

10. the method according to the claims,

It is characterized in that, the bag is transported to envelope at least through other holding elements that can be moved after the filling Device is closed, the bag described in the locking device is closed at its second end.

11. the method according to the claims, which is characterized in that carry out closing it at the second end of the bag Afterwards, the bag is placed in conveying device, so that the side that the cover strip is directed toward upside and/or is directed toward in side Face.

12. for manufacturing and for filling bag, in particular for execution according to any one of above-mentioned three claims Method equipment comprising:

Filling equipment can load the bag using filler in the filling equipment, wherein together with the filler into Enter to the air of the inside of the bag to export to outward at least one outer wall of the bag at least partially through ventilation opening In,

Wherein, air can be guided in the channel on the outside of wall for being located at the bag,

It is characterized in that,

13. the equipment according to the claims, which is characterized in that the device for being conducive to ventilation includes at least one weldering Pincers are connect, the welding clamp adapts to the profile in the region of the cover strip of the bag.

14. the equipment according to any one of above-mentioned two claim, which is characterized in that the device packet for being conducive to ventilation At least one conveying roller and/or guide roller are included, is seen in the axial direction, the diameter of the conveying roller and/or guide roller is variation.

15. the equipment according to any one of above three claim, which is characterized in that the device packet for being conducive to ventilation At least one track guide device is included, the hose track can be guided using the track guide device, wherein from the rail The hose part generated in road includes cover strip, and the cover strip is directed toward the direction of the bag formation device in the packing station.

16. the equipment according to any one of above three claim, which is characterized in that the device packet for being conducive to ventilation At least one arranging apparatus is included, using the arranging apparatus, the bag can be by its top in the way of being directed toward conveying direction It was fallen onto conveying equipment, so that the side that the cover strip is directed toward upside and/or is directed toward in side.

17. the equipment according to any one of aforementioned four claim, which is characterized in that the device packet for being conducive to ventilation At least one shaking device is included, the filler can be made to vibrate using the shaking device.