CN103253436B - Reservoir bag - Google Patents

Abstract

The invention provides a kind of reservoir bag (10), described reservoir bag comprises bag, and described bag comprises two relative sidewalls (12,14), described sidewall comprises periphery (15,18), and described sidewall combines along at least a portion periphery. Each sidewall comprises outer surface and inner surface, and wherein two described inner surfaces (38,40) limit relative inner face, and at least one inner face comprises a kind of pressure sensitive composite material (41). According to another aspect of the present invention, the invention provides a kind of method that forms pouch material, said method comprising the steps of: sheet of base film is provided; The pressure sensitive composite material in one side with adhesive is provided; Mobile described sheet of base film and described pressure sensitive composite material make it superimposed; And described pressure sensitive composite material is attached in sheet of base film.

Description

Reservoir bag

The application is to be on June 21st, 2005 applying date, enters China on December 11st, 2006The exercise question in country's stage is the divisional application of the Chinese patent application 200580019166.7 of " reservoir bag ".

Invention field

The present invention relates to be applicable to hold and protect the reservoir bag of various article (as food). The present invention also relates toAnd form a kind of method that is suitable for the material of constructing reservoir bag of the present invention.

Background of invention

At the article that will store that hold with reservoir bag known in the art, as food. This reservoir bag comprise withThe freezer bag that different sizes provide, described freezer bag is for holding food with sealing means in freezer environmentProduct, as meat. This bag ideal has effectively provides the Reclosable of airtight sealing maybe can repeat to makeWith closure member. In addition, in the time using this reservoir bag, in the described reservoir bag of desirable elimination, comprise,Air, and make the opposite flank of bag seal to prevent that air from entering again, thus make the content of bag with emptyMinimum level is reduced in the contact of gas, and reduces for example due to stored in low humidity, freezer environmentFood dehydration and the possibility of the freezer burn that causes.

The example of known stored bag is included in United States Patent (USP) 5,403,094; 5,804,265; 5,965,224;6,156,363; 6,371,643 and 6,550, those described in 966.

Now, people continue need to be applicable to hold in freezer environment the reservoir bag of stored article,Wherein article are salable is stored in bag, and can make air reduce to minimum journey with contacting of stored articleDegree.

Summary of the invention

According to an aspect of the present invention, the invention provides a kind of reservoir bag, described reservoir bag comprises bagBody, described bag comprises at least two opposing sidewalls that comprise periphery, described sidewall is along at least a portion weekLimit combines. Each sidewall comprises a skin and an internal layer, and described internal layer limits relativelyInner face. At least one inner face comprises for making relative inner face pressure sensitive composite material bonded to each other.

According to another aspect of the present invention, the invention provides a kind of reservoir bag, described reservoir bag comprisesBag, described bag comprises at least two opposing sidewalls that comprise periphery, described sidewall is along at least a portionPeriphery combines. Each sidewall comprises outer surface and inner surface, and the inner surface of described sidewall withWhat face with each other is related to setting. Described at least one, inner surface comprises and is suitable for making at least two relative sidewallsPressure sensitive composite material bonded to each other.

According to another aspect of the present invention, the invention provides a kind of method that forms pouch material,Said method comprising the steps of: sheet of base film is provided; Provide and in one side, there is the pressure-sensitive multiple of adhesiveCondensation material; Mobile described sheet of base film and described pressure sensitive composite material make it superimposed; And make described pressure-sensitiveMaterial is attached in sheet of base film.

Summary of drawings

Fig. 1 is the front elevation view of the reservoir bag of professor's Reclosable according to the present invention;

Fig. 2 is the cross-sectional elevational view intercepting along the line 2-2 in Fig. 1;

Fig. 3 is the zoomed-in view in the cross section of the line 3-3 intercepting in Fig. 2, and view has shown Fig. 1The internal layer of reservoir bag;

Fig. 4 is the amplification elevational sectional view of internal layer shown in Fig. 3;

Fig. 5 is the perspective view of the reservoir bag of Fig. 1, and described reservoir bag comprises the thing being sealed in reservoir bagProduct;

Fig. 6 is the cross-sectional elevational view of the alternative configuration of the reservoir bag of Fig. 1 and 2;

Fig. 7 is the perspective view of the reservoir bag of Fig. 6, and described reservoir bag comprises the thing being sealed in reservoir bagProduct;

Fig. 8 be according to the present invention professor Reclosable reservoir bag alternative embodiment beforeFace front view;

Fig. 9 is the cross-sectional elevational view intercepting along the line 9-9 in Fig. 8;

Figure 10 is another embodiment of the reservoir bag of professor's Reclosable according to the present inventionFront elevation view;

Figure 11 is the cross-sectional elevational view intercepting along the line 11-11 in Figure 10; With

Figure 12 is a diagrammatic view, and the side that is used to form the present invention's pouch material used has been describedMethod.

Detailed Description Of The Invention

With reference to figure 1 and Fig. 2, accompanying drawing has shown the storage of a kind of Reclosable of professor according to the present inventionDeposit bag 10. Reservoir bag 10 generally comprises two relative sidewalls 12,14, and described sidewall is along sidewallA part of periphery of 12,14 combines, as, longitudinally side seam 16,18 and edge extend laterallyBottom margin 20. In illustrated reservoir bag 10, longitudinally side seam 16,18 can by sonic soldering, heat-sealing,Adhesive or other conventional associated methods form along the edge of materials that forms sidewall 12,14, bottom margin20 can be by the folding restriction in the material forming sidewall 12,14. In addition, bottom margin 20 also canComprise being similar to the side seam that the mode of longitudinal side seam 16,18 forms.

The upper end of bag 10 comprises that being applicable to article inserts the opening 22 of bag 10 inside. ReusableClosure member 24 comprises complementary fit element 26,28, and it is positioned at the sidewall 12,14 that is in opening 22Inside on, for the opening 22 of the closed described bag 10 in resealable ground. For example, can repeatThe closure member using can comprise interlocking closed type closure member, and can comprise or not comprise and be suitable for operation bag10 slide blocks of opening and sealing. Reusable closure member shown in the invention is not restricted to, can repeatAvailable example and the manufacturing information thereof of the closure member using are described in United States Patent (USP) 4,186,786;4,285,105; 4,363,345; 4,561,109; In 5,804,265 and 5,851,070. Also can beIn described scope of the present invention, provide other closure member.

With reference to figure 2, each sidewall 12,14 that forms bag 10 comprises multilayer, and described multilayer comprises useIn the ground floor 30 of sidewall 12 and the second layer 32 and for the ground floor 34 and of sidewall 14Two layer 36. Ground floor 30,34 limits the outer film surface of bag 10, and the second layer 32,36 limitsInside, the goods bonding film of bag 10. The second layer or internal layer 32,36 comprise a kind of composite,Described composite has inside apparent surface 38,40 characteristic bonded to each other of the internal layer of making 32,36.Or, can omit the one deck in the second layer 32,36, so that the second layer retaining will be adhered to ground floorRelatively, non-sticky inner surface. Illustrate, internal layer 32,36 is by pressure sensitive composite material 41 (figure3) form, described material shows so a kind of character, and described material can discharge in the time exerting pressureBe adhered to adjacent contact material surface, in the time not exerting pressure, can not be adhered to adjacent contactSurface.

This composite is known in the art, and comprise by multiple protruding 42 and trench 44 (figure4) film forming, as operated and form by embossing, the trench 44 in the binder side of wherein said filmFill with contact adhesive 46 at least partly. Adhesive 46 by projection 42 keep not with adjacently situated surfacesEngage, until enough pressure is applied in the film side relative with adhesive side, cause at least some projections42 subside and allow adhesive to contact with adjacently situated surfaces, cause producing between composite and adjacently situated surfacesRaw adhesive effect.

As mentioned above, the embodiment of at present preferred composite can be utilized the projection of raising, or aroundThe land face of raising of recess, to prevent that adhesive is adhered on adjacent surface too early. But, also can basisThe present invention uses the composite of other form, and these composites comprise non-adhesive material, to controlThe viscosity of adhesive also prevents that adhesive attachment is to adjacent surface before exerting pressure. Exemplary materialsInclude but not limited to release liner (as, through paper or the coating of silicone-coated), China ink, varnish,Grain (talcum, calcium carbonate, starch, wax pearl and similar material), non-woven material, plain weave cotton and fiber,These materials can mix with adhesive or be coated on adhesive. Bonding and/or non-cohesive coating can connectContinue or discontinuous (discrete). Also can use solid-state, pressure reactive adhesive, include but not limited to continuous paintingCover or be coated on the microencapsulation adhesive on film with discrete pattern. In microencapsulation adhesive and analogueUnder, exert pressure, so that micro-capsule skin breakage, thereby make adhesive and adjacent Surface Contact. This classThe additional detail of composite and further example and its manufacturing information can be found in United States Patent (USP) sequence number5,662,758；6,489,022；5,871,607；6,194,062；5,965,235；6,193,918；6,602,454; U.S. Patent Application Publication 2003/0218274A1, and on January 16th, 2003The u.s. patent application serial number 10/345,540 of submitting and transfer present assignee to, its title is“SelectivelyActivatableStorageWrapSheetHavingDiscreteLandAreas ". But, as those skilled in the art understands, can used according to the inventionly be coated with in the aboveBe furnished with the composite of other form of adhesive, comprise that continuous or interruption is coated with adhesive in the aboveAny material.

The complementary elements 26,28 of reusable closure member 24 is positioned at the skin of sidewall 12,14On 30,34 relative inner face, and the composite 41 of described internal layer 32,36 limits top edge48,50, in accompanying drawing, show that described top edge and reusable closure member 26,28 are the pass that is separated bySystem location. Outer 30,34 additionally comprise the relative longitudinal edge being limited by longitudinal side seam 16,18, andInternal layer 32,36 comprises and is positioned at 49,51 and be positioned at by described longitudinal side seam 16,18 and limit in Feng districtsLongitudinal edge.

Between 10 operating periods of reservoir bag, sidewall 12,14 is in the district of the content around reservoir bag 10In territory, force together (seeing Fig. 5), from reservoir bag 10 deaerations, and make internal layer 32,36 with thusInside face effects on surface 38,40 be engaged with each other. Pressing together and applying enough pressure by sidewall 12,14Time, this pressure can make the adhesive in each opposed face 38,40 connect with the surface 40,38 facing with each otherMerge and adhere on the surface 40,38 facing with each other, keeping thus internal layer 32,36 to be engaged with each other,And prevent that air from entering adhered to region again.

In one embodiment, outer 30,34 can comprise by low density polyethylene (LDPE) (LDPE) and formingFilm, described film has at about 0.1-10.0 mil (mils) (0.0254-.254 millimeter)In scope, the preferably thickness in about 1.5-2.0 mil (0.0381-0.0508 millimeter) scope.Internal layer 32,36 can comprise the film of multi-layered high-density polyethylene (HDPE), and described film has approximatelyNon-embossing thickness in 0.25-2.0 mil (0.00635-0.0508 millimeter) scope, and approximately 4.0The embossing thickness of mil (0.1016 millimeter). Therefore, outer 30,34 LDPE material providesVisually be similar to the outside reservoir bag surface of known available reservoir bag. But it should be noted that canAny layer by other material and film thickness for sidewall 12,14.

The example that can be used for the material of skin 30,34 includes but not limited to the mixing of thermoplastic materials or thermoplastic materialsThing. Described film can be made up of conventional cast or film blowing method. Thermoplastic materials used includes but not limited to, poly-Alkene, as high density polyethylene (HDPE) (HDPE), low density polyethylene (LDPE) (LDPE), LLDPEAnd polypropylene (PP) (LLDPE); Thermoplastic elastomer, as SBC, polyolefin mixThing, elastomer alloy, thermoplastic polyurethanes, thermoplastic copolyesters and polyamide thermoplastic; Poly-The polymer of vinyl chloride (PVC) and copolymer, polyvinylidene chloride (PVDC), Sha's logical sequence polymer, secondAlkene-vinyl acetate (EVA) copolymer, cellulose acetate, PETG (PET),IonomerPolystyrene, Merlon, styrene-acrylonitrile, aromatic polyester,Linear polyester, nylon, thermoplastic polyvinyl alcohol; Paillon foil and metallized film.

The examples of materials that can be used for the composite 41 that forms internal layer 32,36 includes but not limited to metalPaper tinsel (as aluminium foil), paraffin paper or greaseproof, thin polymer film, non-woven webs, fabric, paper andCombined material. Some unrestricted examples of thin polymer film comprise: polyolefin film, and as polyethylene, bagDraw together high density, linea low density or low density polyethylene (LDPE); Ethylene copolymer, as ethane-acetic acid ethyenyl ester(EVA) copolymer or ethylene-methyl acrylate (EMA) copolymer, PETG(PET), the PETG of glycols modification (PETG) copolymer; Polypropylene, poly-secondAlkene-propylene copolymer; Polymer and the copolymer of polyvinyl chloride (PVC), polyvinylidene chloride (PVDC);Polystyrene; Nylon and there is other thin polymer film of similarity.

The reservoir bag 10 that is combined as around the skin 30,34 of internal layer 32,36 provides double-walled construction,Its ectomesoderm 30,34 has formed outer bag. In the time that reusable closure member 24 seals, described outer bagFor the content of reservoir bag 10 provides the first barrier or sealing; And internal layer 32,36 provides the second screenBarrier or sealing, to prevent the content of air and reservoir bag 10 in the time that internal layer 32,36 is pressed togetherContact or make contact reduce to minimum level.

The internal layer 32,36 of reservoir bag 10 arrives adjacent across the whole surface conjunction substantially of internal layer 32,36Skin 30,34, as can be, during extruding and forming outer 30,34 thin-film materials used, made multipleThe condensation material thin-film material used with forming skin 30,34 combines to provide, as further discussed below.Or, can pass through adhesive, electrostatical binding or engage two other known methods that material layer is used, makeInternal layer 32,36 is engaged with each other with outer 30,34.

With reference to figure 6, Fig. 6 shows the selective configuration of the one of reservoir bag 10, with reference number 10 ' markBright, wherein indicate by initial same reference numbers corresponding to the element of previous configuration. As reservoir bag 10Previous configuration, two relative sidewalls 12 of reservoir bag 10 ' comprise ', 14 ', each sidewall 12 ', 14 'Comprise multilayer, comprise for sidewall 12 ' ground floor 30 ' with the second layer 32 ' and for relativeSidewall 14 ' ground floor 34 ' and the second layer 36 '.

Internal layer 32 ', 36 ' be connected to each other, and along longitudinal joint 16 ', 18 ' be connected to outer 30 ', 34 ' (figure7), and optionally further along be similar to longitudinal joint 16 ', 18 ' the bottom sides that forms of modeA side seam of edge 20 ' be engaged in. In addition, internal layer 32 ', 36 ' and outer 30 ', 34 ' between upperPortion edge 48 ', 50 ' latasuture is provided.

Internal layer 32 ', 36 ' can comprise a kind of composite, wherein internal layer 32 ', 36 ' inner face 38 ', 40 'Can comprise the pressure sensitive composite material 41 identical with type described in the previous configuration of reservoir bag 10.

As can be seen from Fig. 6, longitudinal joint 16 ', 18 ' between and top edge 48 ', 50 ' with bottomEdge 20 ' between region, internal layer 32 ', 36 ' in fact with outer 30 ', 34 ' separately. Therefore,Internal layer 32 ', 36 ' can be independent of outer 30 ', 34 ' mobile, with cover with tight conformal reservoir bag 10 'Content, promote thus to eliminate contacting of air and content. Therefore, described reservoir bag 10 ' carryProtection to reservoir bag and ease for use are supplied and with the conformal performance being provided by pressure sensitive composite material 41Combination function.

Can be similar to the mode described in reservoir bag 10 use reservoir bag 10 ', now, user canTo bag 10 ' sidewall 12 ', 14 ' exert pressure so that internal layer 32 ', 36 ' inner face 38 ', 40 ' thatThis adheres to, and eliminate thus air and bag 10 ' the contacting of content, or make to contact and reduce to minimum journeyDegree, as shown in Figure 7. The material of internal layer 32,36 provides covering or conformal performance, and this allows internal layer32,36 closely adapt to the profile of reservoir bag content as wrappage, to make connecing of air and contentTouch and reduce to minimum level.

Fig. 8 and 9 has shown according to the present invention a selective enforcement side of professor's reservoir bag 52Case. Reservoir bag 52 comprises two opposing sidewalls 54,56, and described sidewall is along one of sidewall 54,56Divide periphery, as the bottom margin 62 that longitudinally side seam 58,60 and edge extend laterally combines. VerticalCan be by sonic soldering, heat-sealing, adhesive or other conventional associated methods along forming sidewall to side seam 58,60The edge of 54,56 material forms, and bottom margin 62 can be by the material forming sidewall 54,56In folding restriction. In addition, bottom margin 62 alternatives comprise being similar to longitudinal side seam 58,60The side seam that forms of mode.

The upper end of reservoir bag 52 comprises that being suitable for article inserts the opening 64 of reservoir bag 52 inside. Can weighThe multiple closure member 66 using comprises complementary interlocking co-operating member 68,70, and it is positioned at and is in opening 64 placesSidewall 54,56 on, for the opening 64 of Reclosable ground sealed storage bag 52. Shown inExample in, reusable closure member 66 comprises and is suitable for operating complementary interlocking co-operating member 68,70Enter the slide block 72 of sealing and open mode. But should be appreciated that, interlocking closed type closure member also can be provided,As shown in figs. 1 and 2, maybe can provide the closure member of any other Reclosable, as with sealingDescribed in the above referenced patents that device is correlated with.

As shown in Figure 9, sidewall 54,56 comprises respectively the thin layer being formed by a kind of composite,Described composite has can make the inside face effects on surface 74,76 of respective side walls 54,56 can release propertyCharacter adhering to each other. Illustrate, sidewall 54,56 has the pressure-sensitive multiple of following characteristic by a kind of demonstrationCondensation material forms. In the time exerting pressure, composite adheres to adjacent contact material surface releasedlyUpper, and adhere on adjacent contact surface at the Shi Buhui that do not exert pressure, as basis and composite 41The composite that relevant professor cited above constructs, as for reservoir bag 10,10 ' internal layer instituteDescribe.

As selection, a sidewall of sidewall 54,56 can be formed by a kind of pressure sensitive composite material, asThe composite of constructing according to the professor cited above relevant to composite 41, and relative sideWall 54,56 can be formed by non-cohesive surface, as smooth material surface, and a wherein said sidewall54,56 will be adhered to relative non-cohesive surface, form and adapt to the content around reservoir bag 52Property seals. Therefore, described reservoir bag 52 provides around the covering of the content of reservoir bag 52 and suitableShape property, to make in fact content and air insulated, provides again and has comprised reusable closure simultaneouslyThe reservoir bag structure of part 66 is for the ease for use of sealed storage bag opening 64.

It should be noted that, the material of the sidewall 54,56 of described formation reservoir bag 52 comprises HDPE film,But also can use other thin-film material of the same compound material behavior relevant with pressure sensitive composite material 41.For example, can provide above for the material described in the composite of internal layer 32,36 by oppose side wall 54,56.

Figure 10 and 11 has shown according to the present invention a selective enforcement side of professor's reservoir bag 78Case. Reservoir bag 78 comprises two opposing sidewalls 80,82, and described sidewall is along one of sidewall 80,82Divide periphery, as the bottom margin 88 that longitudinally side seam 84,86 and edge extend laterally combines. VerticalCan be by sonic soldering, heat-sealing, adhesive or other conventional associated methods, along forming sidewall to side seam 84,8680,82 edge of materials forms, and bottom margin 88 can be by the material forming sidewall 80,82In folding restriction. In addition, bottom margin 88 optionally comprises being similar to longitudinal side seam 84,86The side seam that forms of mode.

The upper end of reservoir bag 78 comprises that being applicable to article inserts the opening 90 of reservoir bag 78 inside. Can weighThe multiple closure member 92 using comprises complementary fit element 94,96, and it is attached to and is in opening 90 placesOn sidewall 80,82, for the opening 90 of Reclosable ground sealed storage bag 78. Shown inIn example, reusable closure member 92 comprises interlocking closed type closure member. But should be appreciated that, also canSlider zipper closed type closure member is provided, as shown in Fig. 8 and 9, or provides any other to repeatThe closure member using, described in the above referenced patents relevant to locking device.

Reservoir bag 78 comprise with reusable closure member 92 be spaced relationship arrange band shape secondarySealing 98. Secondary seal 98 comprises secondary seal elements 100,102 separately, described secondary sealElement is positioned on the inside face effects on surface 104,106 of sidewall 80,82, just at complementary elements 94,96Below. Illustrated secondary seal elements 100,102 comprises a kind of composite, described composite toolThere is inner face 108,110 character adhering to each other releasedly that can make secondary seal elements 100,102.For example, can provide a kind of composite to secondary seal elements 100,102, described composite hasSuch character adheres on adjacent contact material surface, and is not exerting pressure in the time exerting pressureShi Buhui is adhered on adjacent contact surface, as according to relevant to the composite 41 above religion of quotingAward constructed composite. Certainly, also can only come with one in secondary seal elements 100,102Form secondary seal 98. In addition, secondary seal elements 100,102 can be separately as continuously and/orDisconnected element provides, and the secondary seal 98 that provides continuously or be interrupted capable of being combined, what this can be by this areaTechnical staff is familiar with.

The sidewall 80,82 of reservoir bag 78 can be by ldpe film or as herein described and reservoir bag 10Any film that outer wall 30,34 is relevant forms. Secondary seal elements 100,102 can be by HDPE filmOr as herein described and form relevant any thin of the composite 41 of inwall 32,36 of reservoir bag 10Film forms.

Secondary seal 98 preferably provides can from reusable closure member 92 separation and different visionIdentification sealing. Or, can in the region identical with reusable closure member 92, provide secondary closeEnvelope 98.

Reservoir bag 78 provides the dual-seal that stops air to enter reservoir bag 78 inside, and resistance is also providedOnly smell enters or leaves the dual-seal of reservoir bag 78. The reusable of double sealing structure closesComponent 92 and secondary seal elements 98 also provide additional closure element, so that just in case a sealingWhile opening carelessly, protect the content of reservoir bag 78.

In the selective configuration of one of reservoir bag 78, can only carry at opening 90 places of reservoir bag 78For the composite of described secondary seal 98, so that the single resealable that is suitable for reservoir bag 78 to be providedClosure member.

In other selective configuration of reservoir bag 78, the secondary seal 98 of composite can be positioned at canAbove reusable closure member 92. Can provide 98, one of a pair of composite material secondary seals to existOn the either side of reusable closure member 92; Or, a pair of composite material secondary seals can be provided98 as reservoir bag 78 the first and second sealings used, and there is no reusable closure member 92.

In another selective configuration of reservoir bag 78, secondary seal 98 can repeat by being similar toWith the reusable closure member of closure member 92 form. For example, reservoir bag 78 can be with suitableSlider zipper sealing closures in reusable closure member 92 forms, and secondary seal 98Can comprise interlocking sealing closures. Or described closure member 92 and 98 includes interlocking sealing and closesComponent.

Above-mentioned embodiment provides for air is eliminated or reduced to contacting of reservoir bag contentThe bag structure of low degree, this is especially useful for frozen food (as, meat) reservoir bag used. RemoveBe attached to outside the above-mentioned composite in bag structure, described at least one, bag wall can have passage, as valvePassage (not shown), it allows to bleed, so that from the internal suction air of described reservoir bag. Described valvePassage can be arranged in any position of lower flour bag, or a part for conduct interlocking closure member, but preferably approachesThe top of bag. Relative with valve and approach film that valve passage arranges preferably containing adhesive, and veining,Make the film relative with valve not block the opening that leads to described valve passage, or significant limitation Air Flow is logicalCross valve passage. Valve passage can be in described bag and allows air to pass through any opening of bag wall. Described valve is excellentElect check valve as, so that air can not return in bag again. However, those skilled in the art still canSelection provides particular valve or the valve arrangement of final products required function.

Except bleeding by valve passage, also can before being closed, take out by primary bag opening by interlocking bandGas. A kind of method of doing this part work is, vacuum noz(zle) is put into partially enclosed bag, makes thus bag encloseAround described tight-lipped subsides, for example, assist by fixture. The another kind of method of bleeding by the elementary opening of bagFor using a kind of vacuum seal food storing device of little vacuum chamber that utilizes (for example,, as United States Patent (USP)4,941, described in 310). In both cases, all desirable use a kind of bags of the present invention, described bagVeining on the inner surface of bag, but there is no adhesive at the top of bag, allow thus good air streamMoving. The suction force applying forces the both sides close contact of bag, and bonding by the remainder of bagAgent keeps together. The both sides of bag keep together, allow thus to aspirate capitally air from bag, and limitAir processed enters in bag again. Equally, except those materials of clearly mentioning in this article, also can beIn one or more above-mentioned embodiments, be combined with other material, as, formed by other polymeric materialFilm, comprise so-called being close to-lapping, do not allow air enter to be conducive to seal reservoir bag.

With reference to Figure 12, Figure 12 diagram has shown a kind of the present invention of being used to form pouch material usedMethod, described method comprises, utilizes extruder 112 and mould 114 subsequently, before cooling stepForm base material with melting or soft state, described base material comprises thin layer 116, as described in thinThe LDPE layer of membrane material. Fluid film layer 116 is sent between chill roll 118 and is positioned at water-bath 122In roll gap between the mip rolls 120 at place. By composite layer (as embossing composite 41) from materialMaterial feeding mechanism 124 is sent in the roll gap between chill roll 118 and nip rolls 120, simultaneously instituteThe binder side of stating composite 41 deviates from fluid film 116. Pass through cold in materials at two layers 116,41But when the roll gap of roller 118 and mip rolls 120, fluid film 116 is adhered on composite 41,To form double layer material sheet 126, described double layer material sheet can be used for constructing the storage with composite innerDeposit bag. Described composite layer is attached to can be by one of skill in the art on described base materialThe technology of knowing completes, and comprises hot laminating, adhesive laminated, machinery fixing (as, embossing) and similarTechnology. Also can imagine, basalis can be used as composite and forms, and bag is subsequently from the composite wood of gainedMaterial forms.

Another alternative embodiment of the application's reservoir bag can comprise having at least one inner lining bagWith the multilayer bag of an external support bag, inner lining bag forms or has at least one inner surface of bagComposite. The formation of described composite can utilize or not utilize contact adhesive disposed thereon.If use contact adhesive, a kind of alternative embodiment composite used can be as above-mentioned enforcement sideThat in case, discusses forms like that. About other of applicable multilayer bag structure that is suitable for constructing this embodimentInformation, refers to United States Patent (USP) 5,804,265. Another alternative embodiment of the application's reservoir bagComprise the multilayer bag with at least one lining form and an external support bag. Described lining form has the first sideWall and the second sidewall, the two has at least one form composite or have in the above composite. InstituteThe first end of stating lining form is the unique part that is attached to the inner surface of external support bag, and the second end of film liningBe not subject to the constraint of outer bag. The length of liner can change, so that the second end is in about scope,As long as external support bag is dark, or so that described film is two times of the external support bag degree of depth or more. CloseIn the out of Memory with the reservoir bag structure that is suitable at least one deck inner membrance of constructing this embodiment, please joinRead United States Patent (USP) 6,371,643.

Imagine scope in the present invention, the reservoir bag that professor manufactures according to the present invention can comprise any layerCount, and manufacture any film of bag at the known method for by this area, can use any several layers,Described known method includes but not limited to co-extrusion pressure and laminated. For example, available nylon or ethylene-vinyl alcoholSmell, fragrance and the oxygen barrier properties of copolymer layer improvement bag. In addition, those skilled in the art has answeredSeparate, can select the individual course that bag of the present invention utilizes or the assembly that comprises individual course, to meet specific functionOr aesthetic needs. At exemplary but in nonrestrictive example, can to comprise a bag of the present invention layer knotIn structure, provide UV-resistant layer, to prevent the product photodissociation in bag.

All documents of quoting in the application are incorporated herein by reference, any document quote intangibilityBeing interpreted as is the accreditation as prior art of the present invention to it.

Although illustrated and described the present invention by specific embodiments, for the technology people of this areaMember it is evident that, can make in the case of without departing from the spirit and scope of protection of the present invention many itsIts variation and amendment. Therefore, comprise and belong to model of the present invention at additional claims consciouslyAll such changes and modifications in enclosing.

Claims (7)

1. (10'), described reservoir bag comprises a reservoir bag:

Bag, described bag comprises at least two relative sidewalls (12', 14'), described sidewall comprises weekLimit, and described sidewall is along periphery described at least a portion and along the bottom margin (20') extending laterallyCombine;

Each described sidewall (12', 14') comprises skin (30', 34') and internal layer (32', 36'), described internal layer(32', 36') limits relative inner face (38', 40'), and described at least one, inner face comprises for makingState relative inner face pressure sensitive composite material bonded to each other (41);

It is characterized in that, at the side seam place along described bottom margin (20') be provided at described internal layerThe latasuture place of top edge (48', 50'), described internal layer (32', 36') is connected to along longitudinal joint (16', 18')Described skin (30', 34'), between described longitudinal joint (16', 18') and at described top edge (48', 50')And the region between described bottom margin (20'), described internal layer (32', 36') in fact with described skin (30',34') separately.

2. reservoir bag as claimed in claim 1, the feature of described reservoir bag is also, described pressure-sensitiveComposite (41) comprises the adhesive coating being positioned on described at least one inner face.

3. reservoir bag as claimed in claim 1 or 2, the feature of described reservoir bag is also, described inAt least one inner face comprises multiple impressions, and each described impression has the adhesive setting within it.

4. reservoir bag as claimed in claim 1, the feature of described reservoir bag is also, described in twoRelative inner face comprises described pressure sensitive composite material (41).

5. reservoir bag as claimed in claim 1, the feature of described reservoir bag is also, described bagComprise opening and closure member, described closure member comprises the cooperative compensating element that is positioned at described opening part.

6. reservoir bag as claimed in claim 1, the feature of described reservoir bag is also, at least describedAn inner face comprises projection and the trench adjacent with described projection, and fills at least partly with adhesiveDescribed trench.

7. reservoir bag as claimed in claim 6, the feature of described reservoir bag is also, described projectionCave in to allow the described adhesive with in described trench to contact.