JP4202515B2 - Self-supporting bag, its manufacturing method, and reinforcing material sticking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-supporting pouch.
[0002]
[Prior art]
Various bag-making self-supporting pouches have been proposed in order to provide self-supporting properties in a state where a flexible pouch is filled with contents. For example, as shown in FIG. 8 from the format, (a) a standing pouch, (b) a side gusset type self-supporting pouch, and (c) a self-supporting pouch with upper and lower gussets.
[0003]
[Problems to be solved by the invention]
These self-supporting pouches are lighter than bottles and cans, and have advantages such as ease of disposal after use. However, because the films that make up the pouches are flexible, The torso is swollen, and it is inferior in its independence and lacks display at the store. Also, these free standing bags are difficult to stack.
When emphasis is placed on self-supporting, it is effective to increase the rigidity of the laminate. However, in order to increase the rigidity of the laminate, it is necessary to increase the thickness of a part of the layers of the laminate or all the layers constituting the laminate. As a condition, the sealing time takes a long time, and the production efficiency decreases.
In addition, it has been realized by pasting other materials such as labels on the surface of the packaging material of a self-supporting bag, or by combining with a carton for self-supporting alone, but the mechanism of the packaging device becomes complicated and large, Therefore, the productivity of the package could not be improved.
An object of the present invention is to provide a self-supporting bag that maintains and maintains physical properties such as barrier properties of a composite film, and has excellent self-supporting properties, a manufacturing process thereof, and a reinforcing material sticking device.
[0004]
[Means for Solving the Problems]
The present invention is a self-supporting bag that is formed using a composite film having at least one surface having thermal adhesiveness, and the composite film is positioned on a side surface when the self-supporting bag is filled with contents to be self-supporting. A self-supporting bag, characterized in that it is a laminated body provided with a reinforcing material between the layers of the region, wherein the reinforcing material contains paper having a thickness of 60 to 300 g / m2 or more, Including a spout that is injection-molded using synthetic resin at the upper end, and the method of manufacturing the roll-like printed material that serves as a reinforcing material for a self-supporting bag. Printing is performed using a plate made of a pattern portion and a non-pattern portion, which is provided at a portion located on the side wall portion, and serves as a reinforcing material. A peeling varnish is applied to the non-pattern portion, and the pattern portion and the non-pattern portion are further coated. Leave at least two joints with a width of 2mm or less at the boundary with the part At the same time as the substrate film is laminated on the printing surface of the printed roll paper, or the non-image part of the substrate to be printed is peeled off in a separate process, After laminating an intermediate layer and / or a heat-sealing layer on the surface of the film to which the reinforcing material is bonded, a laminate is formed, or a bag is made using the laminate, or on a base film that becomes a self-supporting bag A step of sticking the reinforcing material in which the heat-sensitive adhesive is activated at a position that becomes a side wall when bag making, a step of laminating a heat-sealing layer on the surface on which the reinforcing material is attached, Printing using a plate consisting of a pattern part and a non-pattern part on a roll-shaped printed material that is a step of making a self-supporting bag, printing the base film, and reinforcing the self-supporting bag And further drying the heat-sensitive adhesive to the substrate. Punching out the pattern portion to be used as a reinforcing material and forming a bag using the laminated body, including the step of attaching a spout made of a synthetic resin molded product to the upper edge of the bag body. It is a manufacturing method of a self-supporting bag, and also supplies a roll-shaped reinforcing material, a punching portion that is a reinforcing material having a predetermined shape from the roll-shaped reinforcing material, a supplying portion that discharges the punched reinforcing material onto a conveyor, A transfer conveyor and a heat-sensitive adhesive activation unit provided at any one of the above positions, a rewinding machine for continuously or intermittently moving a roll-like film having a base layer or an intermediate layer laminated on the tip of the conveyor, Reinforcing material comprising a sticking portion having a function of detecting the flow position of the roll film in the rewinding machine and sticking the reinforcing material to a predetermined position of the composite film at a timing. It is a sticking device.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In the self-supporting bag of the present invention, a reinforcing material is provided on the entire side wall or part of the side wall when it is self-supporting to enhance its self-supporting property. As the reinforcing material, paper, metal, plastic sheet or the like can be used as the reinforcing material base, but paper can be suitably used from the viewpoint of workability, cost, ease of processing after use as a packaging material, and the like. .
FIG. 1 shows an embodiment of the self-supporting bag of the present invention, (a) a perspective view, (b) a perspective view equipped with a spout, and (c) a perspective view showing another embodiment of the self-supporting bag of the present invention. is there. FIG. 2 illustrates the structure of the self-supporting bag of the present invention. ₁ -X ₁ It is a fragmentary sectional view, (b) It is an expanded view of a laminated body. FIG. 3 illustrates another structure of the self-supporting bag of the present invention. ₂ -X ₂ It is a fragmentary sectional view, (b) The front view of a front member or a rear member, (c) The front view of a side member, (d) The top view which shows the position of each member at the time of bag making. FIG. 4 is a cross-sectional view showing a configuration in an example of a laminated body constituting the self-supporting bag of the present invention, showing (a) a portion provided with a reinforcing portion and (b) a portion not provided with a reinforcing portion. Drawing 5 is an explanatory view about the manufacturing method of the self-supporting bag of the present invention. FIG. 6: is the conceptual diagram of an apparatus and (b) Y part enlarged view which show the Example of the apparatus used for the sticking process of the reinforcing material of the self-supporting bag of this invention. FIG. 7 shows an embodiment of the spout attached to the self-supporting bag of the present invention, (a) a perspective view for explaining the attachment of the spout to the bag, and (b) a perspective view showing another embodiment of the spout. is there.
[0006]
The self-supporting bag of the present invention has a composite film of at least two layers composed of at least a surface layer and a heat fusion layer, and a layer between the composite films in order to partially increase the rigidity of the composite film. As shown in b), the bag is made from the laminate 10 provided with one reinforcing material provided with the crease 8. For example, as shown to Fig.1 (a), the side wall part of a self-supporting bag consists of the laminated body 10a which provided the reinforcing material, and the other part consists of the laminated body 10b without a reinforcing material.
The crease 8 is provided on a reinforcing material such as paper so that a ridge line portion of the bag is easily formed when a self-standing bag is made.
And the said reinforcing material 1 is inserted | pinched in the process which manufactures the said composite film in the site | part corresponded to the side wall part when the contents are accommodated and made to stand.
The self-supporting bag made according to the present invention is excellent in self-supporting property.
[0007]
By positioning the reinforcing material between layers of the composite film constituting the bag, the glossiness of the surface is not impaired, and there is no concern that the reinforcing material layer peels off the bag.
The self-supporting bag of the present invention is characterized by its laminated structure. The simplest layer structure is a base material layer, a reinforcing material layer, a heat fusion layer 12, or a base material layer as shown in FIG. 11, a reinforcing material, an intermediate layer, a heat fusion layer 12, and the like can be obtained by making a bag as a composite film having a configuration in which the reinforcing material is sandwiched between the base layer and the intermediate layer. An adhesive layer can be provided between the layers.
[0008]
The self-supporting bag of the present invention is a laminate in which the reinforcing material is sandwiched between the base material and the heat-fusible layer or between the base material layer and the intermediate layer in the step of producing the composite film. It is characterized by that.
[0009]
Moreover, the self-supporting bag of this invention may provide a reinforcing material for each panel which comprises a self-supporting bag. For example, as shown in FIG. 1C and FIG. 3B, the front member, the rear member, and the left and right side members are separated from each other, and a reinforcing material is provided on each member. ) And heat-sealing each end, and as shown in FIG. 3A, they may be integrated into a self-supporting bag.
[0010]
Next, each layer which comprises the said laminated body is demonstrated below. The composite film is a laminate film of two or more layers made of a material having at least one surface having a heat-sealing layer. As the composite film, for example,
(A) Base material layer / adhesive layer / heat fusion layer
(B) Substrate layer / adhesive layer / intermediate layer / adhesive layer / heat fusion layer
When the reinforcing material of the present invention is inserted,
(A ′) Base material layer / adhesive layer / reinforcing layer / adhesive layer / heat-sealing layer
(B ′) Base material layer / adhesive layer / reinforcing layer / adhesive layer / intermediate layer / adhesive layer / heat-fusion layer
(B'2) Base material layer / adhesive layer / intermediate layer / adhesive layer / reinforcing layer / adhesive layer / heat-bonding layer
The configuration is as follows. The intermediate layer may be two or more layers.
[0011]
As the base material layer, a biaxially stretched polypropylene film, a biaxially stretched polyester film, a biaxially stretched nylon film, a plastic film such as polycarbonate, cellophane, or a metal such as aluminum or silicon oxide, oxidized on the plastic film A film on which an oxide such as aluminum is deposited can be used.
[0012]
The intermediate layer is laminated between the base material layer and the heat-fusible layer for the purpose of improving the strength as a composite film and improving the barrier property against gas such as water vapor and oxygen. Two or more layers can also be used. Specific examples of the intermediate layer include biaxially stretched polypropylene film (OPP), biaxially stretched polyester film (PET), biaxially stretched nylon film (ON), polycarbonate (PC), and ethylene / vinyl acetate copolymer. A plastic film made of saponified product (EVOH) or the like, cellophane, or a film in which a metal such as aluminum or an oxide such as silicon oxide or aluminum oxide is deposited on the plastic film can be used.
[0013]
Examples of the heat sealing layer include cast polypropylene (CPP), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), ionomer, ethylene / methacrylic acid copolymer (EMAA), polyester (PET), and the like. Alternatively, these resins are formed by an extrusion method.
[0014]
The reinforcing material layer in the laminate used for the self-supporting bag of the present invention is for increasing the rigidity of the side wall portion of the self-supporting bag and improving the self-supporting property, and the material thereof is paper, non-woven fabric, synthetic paper, etc. Although it can be used, paper is preferably used from the viewpoints of good shape workability, printability, cost, and the like.
The paper thickness is 60-300 g / m ² Range, more preferably 100-200 g / m ² It is. Paper thickness is 60g / m ² If the ratio is less than 1, the improvement effect of the self-supporting property, which is the subject of the present invention, can hardly be expected. The thickness of the paper is 300 g / m ² If it exceeds 1, folding suitability is poor in the bag making process, and the formability as a bag becomes poor.
[0015]
In the self-supporting bag of the present invention, when the reinforcing material is processed, printing is performed on the printed material of the reinforcing material using a plate having a pattern portion and a non-pattern portion. In the description of the present invention, a portion that is stuck as a reinforcing material to the side wall portion of the self-supporting bag may be described as a pattern portion, and a skeleton portion after punching out the reinforcing material may be described as a non-pattern portion. However, the said pattern part points out the area | region used as a reinforcing material, and may or may not have a pattern.
The peeling varnish to be applied to the non-pattern part can peel the non-pattern part, leaving only the pattern part on the base material layer laminated on the surface provided with the pattern part and the non-pattern part printed on the substrate. It is a varnish showing releasability.
[0016]
Laminating with each layer of base material layer, reinforcing material, intermediate layer, heat fusion layer is sandwich lamination method using adhesive resin (hereinafter referred to as SL method) or dry lamination method using urethane adhesive (hereinafter referred to as DL method) Etc. can be used. An anchor coat layer applied as an adhesive primer is also used as an adhesive layer when the heat-sealing layer or the like is directly extruded and formed on an intermediate layer.
[0017]
Next, the manufacturing method of the self-supporting bag of this invention is demonstrated.
First, as shown in FIG. 5 (a), a reinforcing varnish Io of the present invention, for example, a pattern is printed on the outer surface of paper, and at the same time, a release varnish is applied to a region where the pattern is not printed (hereinafter, non-pattern part). Or print. A region (hereinafter referred to as a pattern portion) F on which the pattern is printed is sandwiched between layers of a composite film in a portion corresponding to a side wall portion of a self-supporting bag, and the non-pattern portion H is separated in a manufacturing process of a laminate described later. Is to be removed. The peeling varnish to be applied or printed for separation of the non-picture part is mainly composed of nitrified cotton polyamide, silicone, polyethylene wax, etc., and can be applied by a gravure printing method or the like.
Next, at the same time as the printing or in another process after printing, as shown in FIG. 5 (b), the shape necessary for reinforcement, that is, along the outer periphery of the picture portion F, is left with several connecting portions 7. Complete the blanking process. A rotary die cutter was used for the complete punching process. Then, it winds up in a roll shape with the state where the pattern part F is not separated from the non-pattern part H.
Although the connecting portion 7 is left in the punching step, if the connecting portion 7 is too long or too many, the reinforcing material skeleton Is cannot be removed well in the subsequent steps. Further, when the connecting portion 7 is too short or too small, when being wound up after printing or punching and being fed out from the wound roll for laminating with the base material layer, it is being transported until the laminating. In addition, the picture part F falls off or gets caught. As a result of the experiment, the length of the connecting portion was 0.3 to 1.0 mm, and the number of the connecting portions 7 was 1 to 2 on each side.
Next, the printing surface of the pattern part and the film used for the surface layer are laminated. Simultaneously with the laminating or in a separate process, the non-picture portion H is separated from the surface layer film 11 as shown in FIG. Next, the intermediate layer 13 and the heat-sealing layer 12 are sequentially bonded to the surface of the pattern portion F to which the reinforcing material 1 is bonded, by the SL method or the DL method, thereby forming a laminated body that forms the self-supporting bag of the present invention. be able to.
[0018]
The self-supporting bag of the present invention may be manufactured by the following method. That is, the next step, 1) if necessary, printing on the base film, and if necessary, laminating an intermediate layer on the surface on which the base film is printed, 2) a roll-like material that serves as a reinforcing material for a self-supporting bag Printing is performed using a plate composed of a pattern portion and a non-pattern portion that are attached to the side wall portion when the printed material is self-supported and is used as a reinforcing material, and a thermal adhesive is applied to the printed surface. A step of applying and drying, 3) a step of punching out the pattern portion in-line or in advance in the step of sticking the reinforcing material to obtain a reinforcing material for a sheet, 4) a printed surface of the base film or a laminated surface of the intermediate layer or A step of attaching the reinforcing material with the heat-sensitive adhesive activated to any one of the surfaces laminated with the intermediate layer and serving as a side wall when it is self-supporting, 5) Adhering the reinforcing material A process of laminating a heat-sealing layer on the finished surface, 6) A method comprising the step of bags.
When the reinforcing material is cut into sheets by in-line punching, the heat-sensitive adhesive may be activated before the punching.
[0019]
An apparatus (hereinafter referred to as an apparatus) for sticking the reinforcing material to the base film will be described. The apparatus includes a roll-shaped reinforcing material supply, a punching portion that forms a reinforcing material of a predetermined shape from the roll-shaped reinforcing material, a supply portion that discharges the punched reinforcing material onto a conveyor, and a transfer conveyor. An activation part of a heat-sensitive adhesive provided at a position, a rewinding machine that continuously or intermittently moves a roll-like film having a base material or an intermediate layer laminated on the tip of the conveyor, and the roll in the rewinding machine The flow position of the film-like film is detected, and it is composed of a sticking portion having a function of sticking a reinforcing material to a predetermined position of the composite film at a timing.
[0020]
As described above, when the reinforcing material is supplied onto the conveyor, as described above, when the device is punched in-line and supplied onto the conveyor, the heat-sensitive adhesive of the roll-shaped reinforcing material is activated by heating. And then fed onto a punching conveyor. Further, in the case of a reinforcing material punched to a predetermined size in a separate process, as shown in FIG. 6A, the punched reinforcing material is supplied to the stock unit 61 and is transferred from the stock unit 61 onto the conveyor 62. An activation part 63 is provided in the process of supplying the reinforcing material and transported by the conveyor 62, and the heat-sensitive adhesive F ₀ Is activated to develop adhesiveness.
It consists of a sticking tamming control part and a sticking part to a base material.
[0021]
FIG. 6A is a conceptual diagram of the apparatus in the case where the cut reinforcing material I is supplied. The reinforcing material stocker unit 61 and a predetermined number of units from the stocker unit 61 onto the conveyor 26 A mechanism for supplying a row of reinforcing materials I at regular intervals is adopted. Further, a stopper 64 of a reinforcing material is provided at the front end of the transport surface of the transport conveyor 62. The sotopper is linked to a controlled displacement portion, and the displacement portion controls the stopper so that the reinforcing material is adhered to a predetermined surface of the substrate roll in a timely manner in the flow of the substrate roll. Reference numeral 64 denotes a state in which the reinforcing material I is stopped or opened so that the reinforcing material can be moved to the base roll 66.
On the other hand, a base roll 66 that is a roll-shaped base film or a laminate of a base film and an intermediate layer flows as the rewinder 60 with the reinforcing material sticking surface on the stopper side.
First, the reinforcing material I is pasted from the stocker portion 61 onto the transport conveyor 62 with a predetermined number of rows of the reinforcing material I with its heat-sensitive adhesive applied surface facing upward as shown in FIG. Supply at regular intervals. The heat-sensitive adhesive layer is heated by the activating unit at the upper part of the transfer unit of the conveyor 62 to develop tackiness. The reinforcing material that exhibits adhesiveness is stopped by the stopper at the tip of the conveyor, and is stuck to the base material roll at the timing of sticking described later.
The flow of the substrate roll in the rewinding machine 60 may be continuous or intermittent. And the control part of an apparatus detects the position of the printing part of the said base material roll in the detection part 68, and sends the signal to the displacement part of the said stopper 64 the timing which sticks the reinforcement material I. FIG. And the displacement part which received the signal of the timing of sticking immediately switches the stopper 64 which has stopped to an open state, and the reinforcement material I is stuck to the predetermined position of the base-material roll 66. FIG. Any sticking method such as jet air or mechanical pusher may be used. Also. After sticking the reinforcing material I, the base material roll 66 and the reinforcing material I are pressed with a pinch roll 65 to secure the sticking and take up the winding 67. Then, although not shown, the reinforcing material is stuck. An intermediate layer is laminated (or not) on the surface, and a heat fusion layer is laminated to form a laminate.
[0022]
In the lamination of the composite film forming the self-supporting bag of the present invention, the SL method, the DL method, and other methods can be used as the laminating method particularly when the reinforcing material 1 is inserted. The SL method using the adhesive resin is desirable in terms of reducing the generation of voids due to the stepped portion formed on the periphery of the thickness depending on the thickness. The obtained laminate with the reinforcing material inserted is slit to a predetermined width.
[0023]
The self-supporting bag of the present invention can be obtained by applying the winding obtained by the process as described above to a bag making machine and a packaging machine.
In the self-supporting bag of the present invention, by printing on a reinforcing material such as paper, when selling similar products as a series, only the printing on the reinforcing material is changed, so that a printed composite film for each individual product The printing on the base film may be made common by an endless pattern or the like, or the printing on the film may be made unprinted, and the necessary pattern or information may be printed on the reinforcing material.
[0024]
At the upper end of the self-supporting bag of the present invention, a spout that is injection-molded using a synthetic resin can be provided as shown in FIG. The shape of the spout is, for example, as shown in FIG. 6 (a), with respect to the first flange portion 21, an adhesive base 22 attached to the inside of the bag body on one side, and on the other side A spout integrally formed of a synthetic resin with a spout main body provided with a spout cylinder portion outside the bag, wherein the adhesive base provided below the first flange portion includes two sides of the bag. It has a shuttle shape in the bottom view so that the two sides can be easily bonded to each other and the sealing performance can be maintained, and the spout tube portion may include second, third flanges, 23, 24 or a screw 25 for screwing with the cap S can be provided.
As shown in FIG. 6A, when attaching the spout to the bag, a part of the seal portion 5 is left as an unsealed portion 5N when heat-sealing the upper end of the bag, and the spout main body 20 is attached. After the adhesive base portion 22 is inserted into the unsealed portion 5N, the spout main body 20 can be attached to the bag in a hermetically sealed state by heating and pressing from the film outer surface of the unsealed portion 5N.
Further, an extension piece 27 can be provided on the adhesive base 22 and connected to the extension piece 27 to provide a blocking prevention rib 28. For example, as shown in FIG. 6 (b), the ends of the four extension pieces are suspended from each other, and a cross-shaped extension rib extending from each suspended portion is provided as a blocking prevention rib 28. Occlusion at the time of taking out can be prevented.
[0025]
【Example】
The invention is explained in more detail by means of examples.
Single-sided coated paper as base material for reinforcement (Mitsubishi Paper Co., Ltd., piece art Basis weight: 157 g / m ² ), And a pattern is printed on the coated surface of the single-sided coated paper by a multicolor gravure printing method, and a peeling varnish (manufactured by The Inktec Co., Ltd.) is applied to portions other than the pattern.
Cure top delayed OP varnish / Cure top Y100) was printed at the same time.
Next, punching was performed using a rotary die cutter along the outer periphery of the printed pattern so as to leave a paper as a reinforcing material in a state where a partial connection was left on the single-side coated paper.
Next, an isocyanate is applied as an anchor coating agent to a 20 μm-thick expanded polypropylene (OPP) film (FONA manufactured by Nimura Chemical Co., Ltd.), which becomes the base material layer, and a polyethylene resin (Mirason 11P manufactured by Mitsui Oil Industries, Ltd.) is adhered The layer was extruded to a thickness of 20 μm and laminated with the printed surface of the single-side coated paper.
Next, for example, the single-sided coated paper and the stretched polypropylene film are wound on separate rolls, respectively, thereby peeling the single-sided coated paper from the stretched polypropylene film. As a result, unnecessary portions other than the pattern of the single-sided coated paper are separated and removed from the stretched polypropylene film together with the release varnish, and only the pattern portion of the single-sided coated paper (the portion serving as a reinforcing material) remains on the stretched polypropylene film.
Next, on the surface of the stretched polypropylene film provided with the pattern portion of the single-side coated paper, an aluminum-deposited polyethylene terephthalate film (1100: 12 μm thickness manufactured by Toyo Metallizing Co., Ltd.) and a polyethylene resin (Mirason 11P manufactured by Mitsui Petrochemical Co., Ltd.) ) Was laminated by a sandwich lamination method using an adhesive resin. At this time, the vapor deposition layer side of the aluminum vapor-deposited polyethylene terephthalate film (hereinafter referred to as VMPET) was used as the laminate surface, and the polyethylene resin used as the adhesive resin was extruded so as to have a thickness of 15 μm.
Subsequently, an isocyanate-based anchor coating agent (hereinafter referred to as AC) was applied to the non-deposited surface of the deposited film, and a linear low density polyethylene resin (hereinafter referred to as LLDPE) having a thickness of 30 μm was applied to this coated surface (Mitsui Petrochemical Industries, Ltd. 15100C ) Was extruded to form a heat-sealing layer to obtain a laminate.
[0026]
Regarding the configuration of the obtained laminated body, the reinforcing material laminated portion and the portion without the reinforcing material are indicated by material abbreviations as follows.
Pattern printing part (reinforcing layer)
OPP20 / AC / PE20 / Picture printing / Coated paper 157 / PE15 / VMPET12 / AC / LLDPE30
Part without pattern (non-reinforced layer)
OPP20 / AC / PE35 / VMPET12 / AC / LLDPE30
[Abbreviations OPP: Biaxially stretched polypropylene film, AC: Anchor coat, PE: Polyethylene, VMPET: Vaporized polyester film, LLDPE: Linear low density polyethylene resin, the numbers after the abbreviations indicate thickness (μm) Show. However, paper is g / m ² When the winding obtained by slitting the obtained laminate to a predetermined width was set in a vertical gusset pillow machine (manufactured by Kawashima Seisakusho Co., Ltd.), forming a self-supporting bag, filling the contents, and sealing and sealing, A highly self-supporting gusset bag was obtained.
[0027]
In addition, when the take-up slitted to the predetermined width is set in a bag making machine (manufactured by Seibu Seisakusho Co., Ltd.) and the self-supporting bag is molded and sealed, the contents are filled without any problems in bag making. After sealing and sealing, it became a self-supporting bag with excellent self-supporting properties.
[0028]
【The invention's effect】
The self-supporting bag of the present invention can significantly improve its self-supporting property as compared with the conventional self-supporting bag.
By printing on a reinforcing material such as paper, when selling as a series of similar products, only the printing on the reinforcing material is replaced, so there is no need to print on a film for each individual product. It is possible to make it a pattern of no print or no printing on the film.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a self-supporting bag of the present invention, (a) a perspective view, (b) a perspective view equipped with a spout, and (c) a perspective view showing another embodiment of the self-supporting bag of the present invention. is there.
2 explains the structure of a self-supporting bag according to the present invention. (A) X in FIG. ₁ -X ₁ It is a fragmentary sectional view, (b) It is an expanded view of a laminated body.
FIG. 3 explains another structure of the self-supporting bag of the present invention, (a) X in FIG. ₂ -X ₂ It is a fragmentary sectional view, (b) The front view of a front member or a rear member, (c) The front view of a side member, (d) The top view which shows the position of each member at the time of bag making.
FIGS. 4A and 4B are cross-sectional views showing a configuration of an example of a laminated body constituting the self-supporting bag of the present invention, showing (a) a portion provided with a reinforcing portion and (b) a portion not provided with a reinforcing portion.
FIG. 5 is an explanatory diagram of a method for manufacturing a self-supporting bag according to the present invention.
6A is a conceptual diagram of an apparatus, and FIG. 6B is an enlarged view of a Y portion, showing an embodiment of the apparatus used in the step of attaching a reinforcing material for a self-supporting bag of the present invention.
FIGS. 7A and 7B show an embodiment of a spout attached to the self-supporting bag of the present invention, FIG. 7A is a perspective view illustrating attachment of the spout to the bag, and FIG. 7B is a perspective view showing another embodiment of the spout. is there.
FIG. 8 is an explanatory view of a conventional self-supporting bag, and is a perspective view of (a) a standing pouch, (b) a side cassette type self-supporting pouch, and (c) a self-supporting pouch with upper and lower gussets.
[Explanation of symbols]
P Self-supporting bag of the present invention
S outlet
F Pattern part
F ₀ Pattern ink
H Non-pattern part
H ₀ Peeling varnish
I Reinforcing material
Io reinforcement base
Is reinforcement skeleton
V Thermal adhesive
2 Front member or front panel
3 Rear member or front panel
4 Side members or front panel
5 Heat seal part
6 Extraction part
7 Connecting part
8 Folding rules
10 Laminate forming a self-supporting bag
10a Reinforcing material insertion part of laminated body forming self-supporting bag
10b Reinforcement non-insertion part of laminated body forming self-supporting bag
11 Surface layer
12 Thermal fusion layer
13 Middle layer
14 Adhesive layer
15 Reinforcement layer
20 Outlet body
21 1st flange part
22 Adhesive base
23 Tube
24 Second flange
25 Third flange
26 Screw
27 Extension piece
28 Blocking prevention rib
30 Standing Pouch
31 Heat seal part
40 Side gusset type freestanding bags
41 Heat seal part
42 Outlet
50 Upper and lower gusset type free standing bags
51 Heat seal part
52 Outlet
KM Reinforcing material sticking device
60 rewinding machine
61 Reinforcement stocker
62 Conveyor
63 Activation part
64 stopper
65 pinch rolls
66 Base roll, etc.
67 Winding
68 Detector

Claims (5)

Printed on a roll-shaped printed material to be a reinforcing material for a self-supporting bag, using a plate made of a pattern portion and a non-pattern portion, which are provided in a portion located on the side wall when being self-supported, and serve as a reinforcing material, Stripping varnish is applied to the non-picture part, and the boundary between the picture part and the non-picture part is wound up with almost all of the borders having a width of 2 mm or less left at least two places. At the same time as laminating the substrate film on the printed surface of the printed roll paper, or peeling off the non-image part of the substrate to be printed in a separate process, and then bonding the reinforcing material of the substrate film to the surface A method for producing a self-supporting bag, comprising: laminating an intermediate layer and / or a heat-sealing layer to form a laminate, and then bag-making using the laminate. 2. The manufacturing of a self-supporting bag according to claim 1 , further comprising a step of attaching a spout made of a synthetic resin molded product to the upper edge of the bag body in the step of making a bag using the laminate. Method. It is a self-supporting bag that is made with a composite film having at least one surface having thermal adhesiveness, and is located on the side wall portion when it is self-supported on a roll-shaped printed material that is a reinforcing material for the self-supporting bag. Printing is performed using a plate made of a pattern part and a non-pattern part provided as a reinforcing material, a peeling varnish is applied to the non-pattern part, and the boundary between the pattern part and the non-pattern part is 2 mm. The printed material is rolled up by almost completely leaving at least two joint portions having the following widths, and then laminating a substrate film on the printed surface of the printed roll paper, or in a separate process. The non-picture part of the substrate film is peeled off, and then an intermediate layer and / or a heat-sealing layer is laminated on the surface of the base film to which the reinforcing material is adhered to form a laminate, and then the bag is made using the laminate A self-supporting bag characterized by that. The self-supporting bag according to claim 3 , wherein the reinforcing material includes paper having a thickness of 60 to 300 g / m 2 or more. The self-standing bag according to claim 3 or 4 , wherein a spout that is injection-molded using a synthetic resin is attached to an upper end portion of the self-standing bag.

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