CN105121295A

CN105121295A - Sheet material capable of being formed into a resealable package

Info

Publication number: CN105121295A
Application number: CN201480012176.7A
Authority: CN
Inventors: P·A·泽尔法斯; T·A·克拉克; M·N·古德里奇
Original assignee: Intercontinental Great Brands LLC
Current assignee: Intercontinental Great Brands LLC
Priority date: 2013-03-15
Filing date: 2014-03-06
Publication date: 2015-12-02
Anticipated expiration: 2034-03-06
Also published as: EP2969834A1; CN105121295B; MX2015011862A; BR112015021013A2; US20160023828A1; CA2900414A1; AR095515A1; WO2014149815A1; CA2900414C; RU2616855C1

Abstract

The invention provides a sheet material capable of being formed into a resealable package. A package includes a sheet of flexible material that has a first configuration of a generally flat configuration and a second configuration of a folded and sealed configuration. In the flat configuration, both prior to and after sealing, a user can utilize the sheet as a working surface. The flexible material includes a foldable portion and sealing areas disposed on first and second package portions on opposite sides of the foldable portion. When a sealed package is desired, a user can fold the sheet generally about the foldable portion so that the sealing areas generally align with one another. The user can then compress the aligned and abutting sealing areas to ensure sealing. To access the sealed contents, a user can simply pull the folded flexible material portions generally apart from one another to separate the engaged sealing areas.

Description

The sheet material of resealable packaging can be formed as

The cross reference of related application

This application claims the U.S.61/794 submitted on March 15th, 2013, the rights and interests of 029, this patent application is incorporated herein by reference in full.

Technical field

The application relates generally to the sheet material that can be formed as flexible package, and more particularly, relates to the sheet material that can be folded into resealable flexible package.

Background technology

The packaging of a type as known in the art is bag or bag, and it is made up of flexiplast or film usually.Suchly being packaged as substantially rectangular and three side seals, making to pack the opening had for providing contact packing inside.In one form, packaging use the lid limit of material that extends from the side of opening be positioned at opening opposite side for receiving the pouch on this lid limit to close, this is similar to envelope.In another form, comprise the slide block or laminated type slide fastener closing structure of crossing over opening, it is configured to seal this packaging.

Although can meet many purposes, these packagings may be difficult to load relative to large opening and the content of heaviness, such as sandwich.Especially true at random or lax content.In an illustrative example, in order to store peanut butter and jelly sandwich, user must make sandwich and is then loaded in packaging by sandwich.In order to be kept together by sandwich, user is at sandwich sandwich and put in packaging to be placed on wherein by sandwich.If sandwich leaks from its side, then peanut butter and/or jelly can stain packaging inner side or around openings, thus make in a complete mess.

Summary of the invention

Disclosed herein is a kind of packaging comprising flexible material sheet material, it has the first configuration of general planar configuration and folds and the second configuration of sealed configuration.In flat configuration, before and after use, user can use this sheet material as running surface or table mat to prepare content.Then, when needs sealed package, user can around required content pleated sheet to be sealed in content wherein.Advantageously, flexible material comprises foldable portion or fold line, no matter whether it is by crimping (pre-crimped) in advance, by mark mark or fabricate, and be arranged on the sealing area on the opposite side of fold line.Therefore, when needing the sealed package of folded configuration, user can, roughly about foldable portion pleated sheet, make sealing area roughly aligned with each other.User can then press these aim at and adjacent sealing area to guarantee sealing.In order to contact sealing content, user can simply by roughly drawn apart from one another to be separated sealing area for the flexible material part folded.User then advantageously can shakeout sheet material after opening to be used as running surface or table mat.

In the first form, comprise flexible material sheet material, described flexible material sheet material comprises edge, inside face and exterior face.Foldable portion is divided into the first flexible board and the second flexible board to be arranged on across the mode of sheet material between edge and by sheet material.The inside face of sheet material arranges adhesive agent band along its lateral edges, and end adhesive agent band is set along its edge in the inside face of sheet material.Adhesive agent band comprises and is separately positioned on first-phase on the first plate and the second plate to adhesive strip band portion and second-phase to adhesive strip band portion, it is configured to aim at respectively, and is folded together about foldable portion in response to the first flexible board of sheet material and the second flexible board and is joined together to form sealed package.This packaging is also included in one or more relative unsealing outward flange lid limit of the edge of sheet material and the inside face of the folded sheet material arranged along seal-packed every side between adhesive agent band, these relative unsealing outward flange lid limits are configured to be booked and pull open to be separated the first adhesive strip band portion and the second adhesive strip band portion, with the adhesive agent band engaged along edge separation.

This packaging also can be included in one or more intermediate band extended between at least one in side adhesive agent band and end adhesive agent band.One or more intermediate band described is configured to engage hermetically and provides ability sealed package inside being divided into multiple sealed package inside to user.

In the second form, comprise flexible material sheet material and low adhesive bond agent.Sheet material has edge and the foldable portion across edge.Sheet material is divided into the first flexible board and the second flexible board by foldable portion, and low adhesive bond agent is arranged in sheet material inside face along the edge of the first flexible board and the second flexible board.Adhesive agent is configured to aim at, and is folded together about foldable portion in response to the first plate of sheet material and the second plate and is joined together.Therefore, in order to form the sealed package of the second configuration, user can be arranged on low adhesive bond agent on the first flexible board and the second flexible board about foldable portion pleated sheet with rough alignment and pressing with around content seal stock wherein.Low adhesive bond agent can have performance as described herein and composition.

In the third form, comprise flexible material sheet material, complementary coupling assembly (such as interlocking band) and resealable adhesive agent.Described sheet material has end margin, lateral edges, inside face and exterior face.Foldable portion is to be configured to across the mode of sheet material sheet is divided into the first plate and the second plate.In this form, symmetrical sealing area comprises a complementary coupling assembly and resealable adhesive agent separately.First coupling systems is installed to sheet material and is adjacent to an end margin, and the second coupling assembly is installed to sheet material is adjacent to another end margin.Therefore, when sheet material is in flat configuration, on the opposite flank of the first coupling assembly and the sheet material of the second coupling assembly on the either side being positioned at fold line.Resealable adhesive agent comprises the opposite side band be arranged in sheet material inside face, and its lateral edges being adjacent to sheet material between the first coupling assembly and the second coupling assembly extends.Therefore, in order to form sealed package, user can about fold line sheet material with rough alignment first mating part and the second mating part and rough alignment resealable adhesive agent.This packaging also comprises the relative unsealing outward flange lid limit of the inside face of folded sheet material, its respectively between lateral edges and adhesive agent band along seal-packed every side and be set up along seal-packed end between end margin and coupling assembly.Relative unsealing outward flange lid limit is configured to be booked and pulls open to be separated the first adhesive strip band portion and the second adhesive strip band portion, to be separated the coupling assembly along the adhesive agent band of the joint of lateral edges and the joint along end margin.

By another kind of mode, the resealable adhesive agent of above-mentioned form can be the low adhesive bond agent as being hereafter described in more detail formation.Low adhesive bond agent is for himself having more surperficial than other or that material is larger affinity.Thus, the low adhesive bond agent in sealing area can keep sealing property, even if it is also like this that adhesive agent contacts with the content of packaging.

Accompanying drawing explanation

Fig. 1 is the transparent view of the first form of resealable packaging, and wherein flexible sheet material is in flat configuration, and it has the resealable adhesive agent at its edge contiguous;

Figure 1A is the transparent view of the second form of resealable packaging, and wherein flexible sheet material is in flat configuration, and it has the resealable adhesive agent at its edge contiguous and middle resealable adhesive agent band;

Fig. 2 is the transparent view of the resealable packaging of Fig. 1, and wherein sheet material is in and folds and sealed configuration;

Fig. 3 is the transparent view that the fragile part by extending across flexible material is separated into the flexible material roller of the sheet material that the resealable for Fig. 1 is packed;

Fig. 4 is the transparent view of the third form of resealable packaging, and wherein flexible sheet material is in flat configuration, its resealable adhesive agent having the pairing closing section on its opposed end and extend between closing section on its each side;

Fig. 4 A is the transparent view of the 4th form of resealable packaging, and wherein flexible sheet material is in flat configuration, and it has the resealable adhesive agent of its lateral edges contiguous, the complementary coupled assembly of its end margin contiguous and middle resealable adhesive agent band;

Fig. 5 is the transparent view of the resealable packaging of Fig. 4, and wherein sheet material is in and folds and sealed configuration;

Fig. 6 is the transparent view of the 5th form of resealable packaging, and wherein flexible sheet material is in flat configuration, and it has the resealable adhesive agent at its edge contiguous;

Fig. 7 is the transparent view of the resealable packaging of Fig. 6, and wherein sheet material is in and folds and sealed configuration; And

Fig. 8 is the transparent view that the fragile part by extending across flexible material is separated into the flexible material roller of the sheet material that the resealable for Fig. 6 is packed.

Detailed description of the invention

Generally speaking, according to these various modes, apparatus and method provided in this article describe a kind of being arranged in the first smooth packaging opening the reclosable changed between configuration and the second fold seals configuration, and its various forms is shown in Fig. 1 to Fig. 8.Exemplary form described herein can advantageously utilize along film web material outer peripheral adhesive agent, pairing closing structure or its combination come between the first configuration and the second configuration open and close.

Turn to now the details of the first exemplary form, as depicted in figs. 1 and 2.Resealable packaging 10 comprises sheet material 12, and it is shown as and is in the first general planar or spreads configuration out.The packaging of this form utilizes flexible film package or plastic sheet.Package sheet material can be flexible single-layer or multilayer film, sheet material or other materials, comprise the material such as such as polyethylene terephthalate (PET), polypropylene (PP) (its can be or can not for uniaxial orientation or biaxial orientation), linear low density polyethylene (LLDPE), ethylene-vinyl alcohol (EVOH) and/or polyethylene (PE), only lift a few example.In some modes, by the fold line 18 extending laterally across whole sheet material 12, sheet material 12 is divided into the first sheet portion 14 and the second sheet portion 16.In other modes, by foldable area or part 18 by sheet material part 14,16.Optional fold line 18 can by crimping in advance in sheet material 12, such as by being folded mechanically, indentation (continuously or be interrupted), and/or instruction can be had on sheet material 12, such as trace, mark etc., to clearly illustrate its position.By structure like this, packaging 10 can fold about fold line or foldable portion 18, Part I 14 and Part II 16 is contacted with each other or located adjacent one another.

In a kind of mode, sheet material 12 comprises first end edge 20 and the second end margin 22 and first-phase offside edge 24 and second-phase offside edge 26.First-phase offside edge 24 limits the lateral edges of sheet portion 14 and is connected to second-phase offside edge 26 (it limits the lateral edges of sheet portion 16) at fold line or foldable portion 18 place, and lateral edges 24,26 is extended continuously between end margin 20,22.Should be appreciated that the exemplary shape shown in accompanying drawing only provides resealable to pack an example of 10 and sheet material 12.Other sizes, shape and configuration are also possible.

In the first graphic form of Fig. 1 and Fig. 2, packaging 10 also comprises the first bond regions 28 and the second bond regions 30, and it is arranged around the periphery of the first packaged unit or plate 14 and the second packaged unit or plate 16 or girth respectively.As described herein, adhesive agent can deposit in any way as suitable or be printed on sheet material 12.First bond regions 28 and the second bond regions 30 about fold line or foldable portion 18 roughly symmetrical, make district 28,30 the first packaged unit 14 and the second packaged unit 16 by pivotable or fold time rough alignment.More particularly, each in the first bond regions 28 and the second bond regions 30 all can comprise end adhesive agent agent part 32 and contiguous first-phase offside edge 24 that approach end edge 20,22 extends and the opposite side adhesive agent part 34 that second-phase offside edge 26 extends.In one form, bond regions 28,30 has the roughly uniform width around sheet material 12 periphery, and it is between about 0.25 inch to about 1 inch, and in certain methods, about 0.5 inch.

As shown in the figure, the opposite side portion 34 of the first bond regions 28 and the second bond regions 30 is crossed fold line or foldable portion 18 and is connected to each other and is connected to its respective end adhesive agent part 32, make the first bond regions 28 and the second bond regions 30 provide complete closed adhesive agent border around sheet material 12 periphery, and the roughly binder free inside face 36 of leap two sheet portion 14,16 is provided.In the flat configuration of Fig. 1, inside face 36 can be used as running surface.Such as, inside face 36 can be used as the placement surface for making sandwich etc. or be used as table mat during having meal.

If necessary, bond regions 28,30 can comprise scalloped edge or interruption part, i.e. the band of the outside part of non-adhesive, make when bond regions 28,30 sealed together time, be easier to be isolated.The length of the extensible bond regions 28,30 such as these scallop shape, bands, the one or both being limited to the one or both in one or both in sidepiece 34 or end 32, its selected part or connecting in the turning of sidepiece 34 and end 32.

Although sheet material 12 is shown as substantially rectangular and is configured to be folded into substantially rectangular sealed package, other suitable shape can also be utilized as mentioned above.Such as, sheet material 12 can be configured to be folded into triangle sealed package, and it has corresponding bond regions, and sheet material also can be circular or oval or other symmetric shapes.

By structure like this, user can prepare pack content (if necessary), is placed on by content on the inside face 36 in its Part I or Part II.Then, user can fold opposite segments about fold line or foldable portion 18, make the first bond regions 28 and the second bond regions 30 rough alignment, and press alignment area 28,30 the first packaged unit 24 and the second packaged unit 26 to be sealed, to form sealed inside 38, and the sealing bag therefore being formed or construct as Fig. 2 roughly illustrates or packaging.When user wishes to open packaging, Part I 14 and Part II 16 roughly can be pulled open to contact content and/or the inside face 36 launched is used as table mat etc. in any edge except folding 18.

In one form, the neighboring edge 20 of bond regions 28,30 and sheet material 12,22,24,26 spaced apart, make around the outside binder free part of all marginal existences except folded edge 18 of sealing bag or packaging, edge or lid limit 40, as depicted in figs. 1 and 2.These binder free parts 40 provide non-adhering grasping surface grasp when being sealed with the second bond regions 30 the first bond regions 28 for user and be separated the first bond regions 28 and the second bond regions 30.Advantageously, user can select any adhesive edge to open, and user is not limited to opens single opening as previous flexible package.In fact, user even can open two or more edges via part 40 simultaneously.Or, only hold adhesive agent agent part 32 can with end margin 20,22 spaced apart, or only hold some parts of adhesive agent agent part 32 and side adhesive agent part 34 can be recessed or have non-adhesive grip.

As depicted in figs. 1 and 2, the first packaged unit 14 and the second packaged unit 16 are roughly symmetrical.But, not necessarily, because only the first bond regions 28 and the second bond regions 30 are roughly symmetrical, it is sealed when folding Part I 14 and Part II 16 about fold line 18.Therefore, as shown in Figure 6 to 8, the one in Part I and Part II can be longer, make to exist extend away from sealed configuration be easier to grasp and longer lid limit 40.In addition, Part I and Part II can adopt various shape and size to provide only performance and to attract consumer attention.Non-adhesive part, lid limit or edge 40 can have arbitrary size relative to the width in adhesive agent band or district 28,30.In certain methods, the width of part 40 is in the scope of about 1/16 inch to about 1/4 inch, and the width of adhesive agent 28,30 and the ratio of the width of part 40 can be about 1:1 to about 16:1.In other modes, part 40 can reach about 1 inch, and the comparable adhesive agent of part 40 28,30 wide.

As shown in Figure 1A, show the sheet material 12 of alternative form, it is similar to the sheet material of Fig. 1, and thus, common segment shares identical reference number.In this fashion, sheet material 12 also can have and is arranged on inside face 36 and one or more adhesive agent band 42 extended between end adhesive agent agent part 32; The one or more pairs of symmetrical adhesive agent/cohesiveness band 44 extended on an internal surface and between side adhesive agent part 34 is set; Or their any combination.These bands 42,44 allow user by aim at when pleated sheet 12 and sealed inside 38 is divided into multiple less sealed inside 36A by band 42,44 needed for pressing.This separately stores different contents by advantageously allowing user in same packaging in independent sealing area, district or bag.As shown in the figure, band 42,44 is roughly perpendicular to one another and extend perpendicular to adhesive agent band 28,30,32; But these bands 42,44 also can incline towards each other extension, such as extend diagonally across sheet surface 36.

In the second form shown in Fig. 4, Fig. 4 A and Fig. 5, packaging 50 demonstrates has many similaritys with the packaging shown in Fig. 1, Figure 1A and Fig. 2.Therefore, for ease of explaining, similar features structure will adopt similar reference number.The packaging 50 of this form comprises sheet material 12, and it is shown as and is in general planar or spreads configuration out.By extending transversely through its whole fold line or sheet material 12 is divided into Part I 14 and Part II 16 by foldable portion 18.As shown in the figure, sheet material 12 comprises first end edge 20 and the second end margin 22 and first-phase offside edge 24 and second-phase offside edge 26.First-phase offside edge 24 is connected to second-phase offside edge 26 at fold line 18 place, and lateral edges 24,26 is extended between end margin 20,22.

The packaging 50 of this form comprises the first bond regions 52 and the second bond regions 54, and it is separately positioned on the first packaged unit 14 and the second packaged unit 16.First bond regions 52 and the second bond regions 54 roughly symmetrical about fold line 18, make district 52,54 the first packaged unit 14 and the second packaged unit 16 by together with pivotable time rough alignment.More particularly, each in the first bond regions 52 and the second bond regions 54 includes the opposite side adhesive agent part 56 that contiguous first-phase offside edge 24 and second-phase offside edge 26 extend.In graphic form, bond regions 52,54 has roughly uniform width, and it is between about 0.25 inch to about 1 inch, and more preferably, about 0.5 inch.

Packaging 50 also comprises the first and second non-adhesive complementary coupled assemblies 58,60 being respectively adjacent to packaging end margin 20,22 and extending.Non-adhesive coupling assembly 58,60 is configured to coordinating hermetically when being pressed together, connecting or engaging.In a kind of mode, non-adhesive coupling assembly can be bulky joint, VELCRO (Velcro), occlusion and slider zipper type fastener, only lifts a few example.As shown in the figure, relative side adhesive agent part 56 extends between the end 62 and fold line 18 of coupling assembly 58,60, makes the adhesive agent that there is continuous whole length between the corresponding end 62 of coupling assembly 58,60.Then, when Part I 14 and Part II 16 are about fold line or foldable portion 18 pivotable or when folding, the first bond regions 52 and the second bond regions 54 and coupling assembly 58,60 are aimed at respectively.User then can apply pressure respectively on bond regions 52,54 and coupling assembly 58,60, with by package encapsulation for the sealed configuration shown in Fig. 5.By another kind of mode, coupling assembly 58,60 is sealed by using slide fastener members etc.

As shown in the figure, mating component 58,60 and first bond regions 52 is connected with the second bond regions 54 to provide the complete closing seam border limiting inside face 64.In flat configuration, inside face 64 can be used as running surface.Such as, inside face 64 can be used as placement surface for making sandwich etc. or table mat.

By structure like this, user can prepare pack content (if necessary), is placed on by content on the inside face 64 in its Part I or Part II.Then, user can fold opposite segments about fold line 18, make the first bond regions 52 and the second bond regions 54 and mating component 58,60 rough alignment, and pressing is to be sealed to form sealed inside 66 by the first packaged unit 14 and the second packaged unit 16.Turn to Fig. 4 A, the packaging 50 of this form also can have setting on an internal surface and one or more the optional adhesive agent band 42 extended between coupling assembly 58,60; The one or more pairs of symmetrical adhesive agent bands 44 optionally extended on an internal surface and between side adhesive agent part 56 are set; Or their combination, as shown in Figure 1A.

In one form, coupling assembly 58,60 and adjacent sheet material 12 end margin 20,22 spaced apart, make to there is grasping surface 68 and be isolated when the first mating component 58 and the second mating component 60 are sealed for user.User can then to continue roughly drawn apart from one another to Part I 14 and Part II 16 about fold line 18 to be separated the first bond regions 52 and the second bond regions 54.In addition, side adhesive agent part 56 can with lateral edges 24,26 spaced apart, or some parts of side adhesive agent part 56 can be recessed or have non-adhesive grip 70 to provide the edge similar with Fig. 1, Figure 1A and Fig. 2, to cover limit or grasping surface.

As shown in Fig. 4, Fig. 4 A and Fig. 5, the first packaged unit 14 and the second packaged unit 16 are roughly symmetrical.But, be not necessarily because only the first bond regions 52 and the second bond regions 54 and the first mating component 58 and the second mating component 60 roughly symmetrical about fold line 18.Therefore, the one in Part I and Part II can be longer, makes to there is the lid limit being easier to grasp extended away from sealed configuration.In addition, Part I and Part II can adopt various shape and size to provide novelty and to attract consumer attention.

In another form, the adhesive agent being applicable to sheet material herein or packaging can be low adhesive bond agent, and as Application U.S. Serial No 13/035, general description in 399, this U. S. application is incorporated to herein in full with way of reference.The more details of specific low adhesive bond agent are hereafter being stated.

In one aspect, be fabricated to substantially for the low adhesive bond agent of bond regions 28,30,52,54 and sheet material 12 or have certain composition with make the adhesive force on adhesive agent and N/R surface or food reduce to minimum and while still serve as the fastener of actv. reclosable.Namely, adhesive agent has unique formula or structure to realize selected viscosity and peel value, make based on adhesive agent fastener can between customer's used life by repeatedly open and close content is sealed in packaging 10,50, but simultaneously not from the film substrate delamination of opposite inner face forming sheet material 12.

For this reason, adhesive agent can be UV cured binders, it has makes to reduce to minimum relatively low levels of adhesion to the adhesive force on N/R surface, be enough to realize the firmly again closed selected bonding of packaging 10,50 or open peel strength, and enough firm with realize packaging 10,50 repeat open and again closed peel strength.Meanwhile, adhesive agent also has the strong adhesive power of the film substrate to sheet material 12, makes adhesive agent not delamination when opening packaging 10,50.By a kind of mode, adhesive agent can comprise the specific blends of the curable acrylic acid oligomer of UV and Adhesion control agents.In other modes, adhesive agent can comprise the specific blends of the curable acrylic acid oligomer of UV, Adhesion control agents and elastic body (rubber) component.

Preferably, adhesive agent is the pressure sensitive adhesives (PSA) showing adhesive property and low-viscosity UV solidification, although have low viscosity, but still forms good bond with the film substrate of the opposite inner face forming sheet material 12.As understand, the material based on adhesive agent is easier to adhere to same material (that is, self-adhesion) but not different materials usually.Suitable bonding material used herein goes out relatively low viscosity to N/R surface exhibits usually, but still good bond strength (such as not from flexible front plate and rear plate delamination) is gone out to required surface exhibits simultaneously, and show relatively good bonding or self-adhesion bond strength to similar face to close to keep flexible package or bag, but still permit can strikeing with the hand open or strip off packaging.The selected material based on adhesive agent is also permitted from this type of same material unsticking or stripping, make adhesive layer can by repeat strip off and can not to bonding material and/or any below substrate cause remarkable destruction.When bonding material unsticking or strip off, selected bonding material there is enough internal soundness and usually in adhesive bond interface substantially neatly strip off and there is no that lot of materials band is got, wire drawing, other remarkable profiles damage (that is, dough, balling-up etc.) from substrate delamination and/or material.Advantageously, fastener herein based on adhesive agent maintains certain peel adhesion, wherein relative adhesive agent band is to be greater than about 80 grams/linear inch (gpli), and preferably contacts with each other at about 80gpli and the average initial peel adhesion about between 900gpli.In addition, in some cases, the fastener 14 based on adhesive agent repeats to seal and keep after decapping operation to be greater than about 80gpli and/or the average initial peel adhesion at least about 30% to about 200% at five times.

On the other hand, packaging 10,50 and adhesive agent are also configured to mutual each other, the bonding of adhesive agent and sheet material 12 inside face or peel strength are totally greater than and open peel strength between adhesive layer self.Like this, when opening packaging 10,50 when being stripped along with adhesive agent by customer, adhesive agent usually keep adhering to the inside face of sheet material 12 and there is no that band is got, wire drawing or the inside face delamination from sheet material 12.Such as, and in a kind of mode, the bonding of adhesive agent and packaging film substrate or peel strength are greater than about 900gpli, and can stand multiple stripping when not being separated from film substrate and resealing circulation.In addition, adhesive agent is cured the two frictions more than 100 times making it can stand to use MEK (MEK) solvent (ASTMD5402-06).

Preferably, adhesive agent is UV solidification, and more preferably, UV solidifies PSA adhesive agent and shows adhesive property and low viscosity, but forms good bond with the film substrate of sheet material 12.As understand, the material based on adhesive agent is easier to adhere to same material (that is, self-adhesion) but not different materials usually.Suitable bonding material used herein goes out relatively low viscosity to N/R surface exhibits usually, good bond strength (such as not from flexible first plate and the second plate delamination) is gone out to required surface exhibits, and show goodish bonding or self-adhesion bond strength to similar face to close to keep flexible package or bag, but still can strike with the hand open or strip off.The selected material based on adhesive agent is also permitted from this type of same material unsticking or stripping, makes adhesive layer can not be caused remarkable destruction to bonding material and/or any underlying substrate by repetition strip off.When bonding material unsticking or strip off, selected bonding material has enough internal soundness and the strip off and do not have that lot of materials band is got, wire drawing, damage (that is, agglomerate, balling-up etc.) from other essence of substrate delamination and/or material neatly substantially in adhesive bond interface usually.

First component of adhesive agent is the curable acrylate of one or more UV or acrylic acid oligomer.Such as, the acrylic acid oligomer that UV is curable can be the acrylate or methacrylate (that is, acrylic acid oligomer or methacrylic oligomer) with multiple reactivity or functional groups.In general, functional group comprises a UV reaction site.UV reaction site is modal is the carbon-carbon double bond being coupled to another unsaturated site (as ester carbonyl group).By a kind of mode, the curable acrylic acid oligomer of UV is acrylate or the methacrylate of polyfunctional alcohol, this means that oligomer has the hydroxyl more than an acroleic acid esterification or methacrylated on the hydrocarbon backbone of oligomer.By a kind of mode, adhesive agent can comprise the curable acrylic acid oligomer of UV of about 1 % by weight to about 90 % by weight and have the degree of functionality of about 1.2 to about 6.0.In a further mode of operation, the curable acrylic acid oligomer of UV can have the degree of functionality of about 2.0 to about 3.0, and/or provides with the amount of about 20 % by weight to about 70 % by weight in a binder.

In one form, the acrylate of multifunctional UV curable acrylates to be reactive functional group degree the be vegetable oil of 2.0 or larger.On the other hand, the acrylic acid oligomer that UV is curable can comprise epoxidised soybean oil acrylate.In general, based on preferred adhesion component ratio (ACR) (will discuss herein), the amount of the acrylic acid oligomer that the UV used is curable can affect the performance of final adhesive agent.Such as, too low based on the amount of the curable acrylic acid oligomer of preferred ACR, UV when, the solidification rate of final adhesive agent is too slow.On the other hand, too high based on the amount of the curable acrylic acid oligomer of preferred ACR, UV when, final adhesive agent can be sufficiently solidified, but may have not enough self-adhesion and seal and reseal.

The second component of adhesive agent is Adhesion control agents.By a kind of mode, adhesive agent can comprise the Adhesion control agents of about 1 % by weight to about 65 % by weight.In a further mode of operation, Adhesion control agents can about 20% to about 65% amount exist.Adhesion control agents can comprise tackifying resin or curable polymer/combination of monomers, its self-adhesion of fastener that can produce required levels of adhesion when solidifying and be applicable to reclosable.In one aspect, Adhesion control agents can comprise Aliphatic urethane acrylate oligomer.The Adhesion control agents of the many other types being suitable for UV curable PSA adhesive agent also can be used in the bonding system of reclosable.

The optional three components of adhesive agent is elastic body or rubber components.By a kind of mode, elastomeric component can comprise the curable acroleic acid esterification (that is, acrylic acid modified) of at least one of hydroxy-end capped elastomer polymer (that is, elastic body polyalcohol) or methacrylated ester.This elastomeric component can comprise acrylic acid modified poly-butadiene, saturated poly-butadiene and/or flexible polyurethane.In one aspect, methacrylated poly-butadiene can be provided.When using in a binder, elastomeric material can the amount of about 0 to about 20% provide.In one aspect, elastomeric material provides with the amount of about 5% to about 15%.Gratifying adhesive agent can be formed into has as described herein required low viscosity, resealable performance and do not have elastomeric component; But, it is believed that elastomeric component contributes to realizing best paintability.Best bond agent performance can be limited by performances such as such as self-adhesion, viscosity, viscosity and solidification rates (only lifting a few example).Elastomeric component is useful to adjustment peel strength performance, substrate adhesion strength, raising flexibility, viscosity control and solidification rate adjustment.

The Average initial peel strengths measured by ASTMD3330/D3330M-04 method F of the adhesive agent of suitable solidification can at about 80gpli to about 900gpli, and in the scope of about 280gpli to about 800gpli specifically.Adhesive agent is also designed to keep its Average peel force (that is, adhesive force keeps) after the operation of repetition open and close.Preferably, the adhesive agent of solidification can keep its average initial peel adhesion at about 280gpli and about between 800gpli after nearly at least five strippings repeated-reseal circulation.Preferably, peeling off-reseal-when peeling off, adhesive force retention value can between the initial value conservation rate of about 30% to about 200%.After adhesive agent is by debris contamination, adhesive force retention value can between the initial value of about 30% to about 150%, and wherein debris contamination test method as described herein.

In a further mode of operation, the skin contacting adhesive agent at least partially and in some cases of sheet material 12 can comprise polymeric coating, layer, filler and/or sealant layer with the interfacial adhesion between the package base strengthening adhesive agent and sheet material 12.In one form, polymeric coating can be selected from ethylene vinyl acetate (EVA), polyolefin (as polyethylene), or their blend.If used, then polymeric layer can comprise adhesion promotion filler particles.In one form, filler can be clay, calcium carbonate, montmorillonite, crystallite silica, dolomite, french talc, mica, oxide (monox, aluminium oxide, titanium oxide etc.) and the micron of other additives and/or their combination or the filler of nanosized, its be added at least polymeric coating, the first plate 14 and/or the second plate 16, about in the superficial layer of this sealant layer or the package base of sheet material 12 or on, to strengthen the bonding of fastener adhesive agent and sheet material 12.

Specifically, organo clay fillers can be used, and in one aspect, organo clay fillers is organically-modified montmorillonite.Organic clay is organically-modified natural clay, as the montmorillonitic clay processed with the inhibiter of such as quaternary ammonium salt or process.Montmorillonite is phyllosilicate class mineral, and it generally includes hydration sodium calcium aluminium magensium silicate hydroxide.Do not wish by theoretical restriction, organic clay fill substrate can have contribute to produce can operate and the ability of the closing structure based on adhesive agent of reclosable, because filler contributes to forming good bond between low adhesive bond agent and package base, to make when opening packaging 10,50 adhesive agent not from the package base delamination of sheet material 12.

Clay or other fillers to be dispersed in effectively in the polyethylene of the sealant layer of the package base that can be used for sheet material 12 and EVA or can be challenging due to the uncompatibility of clay filler and some poly-mer in other coatings.Therefore, use the fill composition comprising the filler blended with compatible vehicle to supply filler to contribute to filler being mixed and being distributed in sealant layer.By a kind of mode, clay filler can in for coating or supply in the maleic anhydride grafted linear low density polyethylene carrier (MA-LLDPE) being applied to substrate.Do not wish that the maleic anhydride moities of carrier has affinity to clay filler, and other mixed with polymers of the polyethylene part of carrier and sealant layer are good by theoretical restriction.Exemplary nandclay filler composition can purchased from the Polyone Corp of Ohio Ai Wen Hu Shi (PolyOneCorporation, AvonLake, Ohio).Not wishing bound by theory, it is believed that organo-clay particle (it can be high polarity) and/or maleic anhydride grafted linear low density polyethylene (MA-LLDPE) vector resin existed together with the clay filler surface energy that can be used for by increasing basalis improves the adhesive force of cured binders coating and substrate surface.

In addition, also it is believed that on a microscopic level, clay or other filler additives can basad imparting roughnesss of surface, actively to affect the friction coefficient of substrate and the effective area of contact increased between substrate and coating, thus provide more multidigit point for generation chemistry and/or mechanical adhesion.By a kind of mode, in expection sealant layer, the bond strength of about fill composition of 0.5 % by weight to about 20 % by weight to the package base of adhesive agent and sheet material 12 has Beneficial Effect, make to be greater than peel adhesion between adhesive agent part to the binding power of substrate, thus seal area 28,30,52, the 54 not delamination when opening engaged.In addition, filler can make substrate surface coarse, it can be free to slide on the metal surface of packaging facilities and non-caked, therefore makes it possible to the migration reduced or eliminated in polymeric coating or layer and helps sliding additive.

In some cases, the optional components of the suprabasil polymeric layer of sheet material 12 can comprise migration and help sliding additive, and it contributes to reducing the friction coefficient between substrate and other surfaces, thus allows substrate to be free to slide on metal surface or himself.In one aspect, erucyl amide can be provided to help sliding additive (that is, unsaturated aliphatic primary amide).Be used in and helped sliding additive in 2000ppm to 7000ppm scope; But, have been found that under these high levels, be difficult to make adhesive bond arrive the low energy surface of substrate, because help sliding additive to block the surface site that adhesion can occur.But that adds the much lower level of filler permission use helps sliding additive, as being less than about 1000ppm.In other cases, substrate have be less than about 700ppm help sliding additive, or do not help sliding additive in other cases.Because use filler reduces the friction coefficient between substrate and other surfaces, this is the previously passed effect of adding migration and helping sliding additive to realize, so this allows reduction or elimination migration to help the concentration of sliding additive.Than normally used low migration help sliding additive level also can contribute to increasing solidified coating and substrate initially and bond with passing in time, because have less additive obstruction coating and the bonding of substrate.Do not wish by theoretical restriction, it is believed that the surface helping the fatty acid amide in sliding additive (it is lower-molecular-weight component) transportable or floating loose (bloom) to polymeric layer, thus affect the bond strength between sheet material 12 and adhesive agent.But any fatty acid amide that corona treatment or flame treatment can initially burnout on polymer layer surface, thus obtain the initial good bond strength of adhesive agent.Pass in time, other fatty acid amide is transportable or floatingly fall apart to polymer layer surface, and this causes the bond strength in the shelf life extended with reduction.

In addition, before adhesive agent is applied to package base, in some cases, substrate can experience surface preparation to increase surface energy, and/or applies primer coating.Such as, possible surface treatment can comprise corona treatment, plasma treatment, flame treatment etc., or also can use immersion coating, such as priming paint or adhesion promotor.Corona treatment can increase the surface energy of substrate, which improves coating adhesion and keeps being adhered to the ability of substrate.Corona pre-treatment can comprise ion cloud, its oxidized surface and make surface be easy to receptive coating.Corona pre-treatment is the suprabasil reaction site of oxypolymer substantially.If carry out corona treatment, then it is desirable that surface energy should be about 40 dyne or larger after the treatment.

Do not wish bound by theory, in some cases, it is believed that the corona treatment of substrate surface contributes to providing good bond between coating and substrate surface due to the surface energy increase of substrate surface.Except corona treatment, the combination helping sliding additive pretreatment with low concentration and add fill composition in substrate forms the good bond between the fastener of reclosable and substrate together.

Realize and the balanced peeling force of package base, viscosity and binding power to such as describe herein, determine that the amount of three kinds of adhesion components needs to drop on acrylic acid oligomer relative in the specific adhesion component ratio (that is, ACR) of elastic body and sticky ingredient.Preferably, the ACR of adhesive agent is:

In a further mode of operation, ACR can in the scope of about 0.8 to about 1.5.

Have been found that to different material (namely the described ACR scope of three kinds of components in formula provides, machine part, chip, particle, food crumbs etc.) there is low viscosity, but bonding that can be enough or peel strength are sealed to himself to maintain sealing therebetween and to resist the unique binder formula polluted.Adhesive agent in this specific ACR be also provided in significantly can not to reduce when being subject to the operation of repetition open and close or to lose it and seal-peel off-reseal the resealable function of quality.Normally undesirable lower than the ACR value of about 0.5, because the significantly a large amount of UV energy of needs solidifies by adhesive agent.If ACR is higher than about 1.5, then adhesive agent can solidify rapidly, but it also will have low (or nothing) peel strength, and this is unacceptable concerning adhesive agent closing structure herein.Except required ACR scope, gratifying binder formula also can have some other parameter in some cases, the stabilized with mixture of such as component, certain dispensing viscosity, certain solidification rate and/or certain peel strength.

Not only need the adhesion component of this ACR, and adhesion component also must be compatible with each other, makes them form stable flowable liquids compound.As used herein, when adhesive agent is (when minimum, two or three key component) remain in continue under room temperature (about 70 °F to 75 °F) nearly three days time keep homogeneous liquid (, there is no being separated as seen and not having gel-forming of component) time, it is considered to stable.

In addition, the viscosity of binder formula at room temperature can about 10,000 centipoise is to about 50, in 000 centipoise (cPs) or less scope, or be about 2000cPs or less under about 160 °F (71 DEG C), and be in some cases, about 200cPs or less under 160 °F (71 DEG C).This range of viscosities provides and uses conventional printing, roller coat or slit die applying technology that adhesive agent is applied to film substrate.

In order to generate the adhesive layer of fully solidification in substrate, can use and can send at about 100mJ/cm ²to about 800mJ/cm ²the light source curing adhesive agent of UV of the energy in scope.This assists in ensuring that again adhesive agent fully solidifies, and it is confirmed (will discuss in detail further herein) by two frictions (MEK rub resistance trial values (ASTMD5402-06)) of about 100 times or more times.

By a kind of alternative, the first peel adhesion between the end adhesive agent agent band 32 of joint is less than the first peel adhesion between the side adhesive agent band 34 of joint.Such as, the first peel adhesion of end adhesive agent agent band 32 can about between 100gpli and 200gpli; And the first peel adhesion of side adhesive agent band 34 can at about 300gpli and about between 900gpli.In other words, the peel adhesion of the side adhesive agent band 34 of joint can be about 3 times to about 9 times strong of the peel adhesion of the end adhesive agent agent band 32 of joint.

By a kind of alternative, by utilizing low adhesive bond agent, such as have composition as above, the first bond regions and the second bond regions can have than wider scope discussed above, maybe can cover the major part or whole of the first packaged unit 14 and the second packaged unit 16.Low viscosity will allow sheet material 12 to be still used as running surface, because adhesive agent can not adhere in fact the content of packaging 10,50.Such as, complete cover sheets 12 by make customer can customize sheet material 12 size and therefore customize gained packaging size.This is by fitting content and make the shell head space around content reduce to the minimum perishable content for packaging to provide shelf-life of growth better.

It is the continuous rolling 100 of sheet material 12 that low viscosity also can be advantageously used in packing and storing, as shown in figures 3 and 8.Because low adhesive bond agent can not adhere to other surfaces substantially, so it often can not adhere to the outside face of the adjacent sheet 12 in roller 100, make to launch as required subsequently and remove sheet material 12 not need to overcome the cohesive force of normal glu agent.In a kind of mode, independent sheet material 12 is separated by cut or perforation pattern 102 by mechanical means or laser means.This allows user from roller 100, to remove sheet material 12 as required, and this is similar to the operation of paper handkerchief roller.In addition, use sheet material roller 100 to desirably reduce packing as stocking system, that is, more packaging is installed to comparatively in zonule, and this roller can be packed in packing carton in contraction or flow-wrapped.Or sheet material 12 can be used as independent sheet material and wraps up in individually and wrap on roller 100, and wherein user launches to remove pre-cut sheet material simply.In another mode, sheet material 12 can be stacked or fold in distributing box, wherein user peelable, pull or otherwise remove sheet material 12 for use.

In the major part or whole modes of covering first packaged unit 14 and the second packaged unit 16, sheet material 12 can be provided as continuous rolling, and this will allow customer to cut the sheet material of required size.Thus, sheet material 12 is similar to the function of plastic wraps film by having, but plastic wraps is not folded into himself the upper and trend of clinging.

By a kind of alternative, sheet material 12 can the second folded configuration be stored in roller 100.Make in this way, sheet material 12 is pre-folded, and bond regions 28,30 sealed together, is detachably fixed to adjacent sheet 12 simultaneously.Thus, user can draw and separator sheet 12 from roller 100.User then will roughly pull open to open packaging Part I 14 and Part II 16, the content needed for insertion, and reseal packaging 10.

example

example 1

The compatibility of test acrylic acid oligomer, Adhesion control agents and the various blends of elastomeric material and storage stability (stability is defined as at room temperature storing the compound that nearly can not form gel or be separated visibly after 3 days).The formula level that following table 1 shows tested combination and uses.

table 1: the binder formula of measuring stability

Component indicates as follows:

A=Acrylated Epoxy soybean oil (CN111US, the Sartomer (SartomerCompany, Exton, PA) of Pennsylvania's Exton).

B=methacrylated poly-butadiene ( 3500, Sartomer (SartomerCompany)).

C=thickening aliphatic acrylic acid oligomer (CN3001, Sartomer (SartomerCompany)).This component comprises the blend of Aliphatic urethane acrylate and hydro-carbon tackifying resin.

D=polybutadiene styrene (Ricon184, Sartomer (SartomerCompany)).

E=thickening aliphatic urethane acrylic acid oligomer (CN3211, Sartomer (SartomerCompany)).

The tackifier enrichedmaterial (PRO11236, Sartomer (SartomerCompany)) that F=makes with light low fragrant odour hydroxy-aromatic resin:.

The stability of these adhesion components or compatibility can be in the manufacture of liquid coating mixture, transport, factory the factor storing and use.Visually stability is judged by the outward appearance of viewed formula after storage 3 days (about 72 hours) and denseness.According to observations, the sample 1,2 and 5 in table 1 provides the visually gratifying blend of various adhesion component, and it remains uniformly after 3 days, that is, component is not separated visibly or forms gel.Although sample 2 obtains stabilized formulations, this adhesion component has undesirable ACR and does not solidify well (that is, this can see in the MEK friction solidity test of the sample 10 of similar preparation from following table 3).But sample 1 and 5 provides the stable adhesive agent blend solidifying well and have ACR needed in 0.5 to 1.5 scope.Other sample blends are separated, and become too thickness and/or gelation (that is, sample 8 becomes gel after 3 days).Sample 8 forms gel, and this shows that the composite formed by aliphatic acrylate or component E be combined with tackifier component F is inconsistent.

Therefore, in order to realize the stable adhesive agent being suitable for using as disclosed herein, stable adhesive agent needs to have the one in following factor usually, and in some cases, more than one in following factor, and in other cases, all factors below: compatible components, curable, required ACR and all three kinds of component parts all exist (that is, acrylic acid oligomer, elastic body and Adhesion control agents).

example 2

Based on the initial adhesion agent compatibility result of the stabilized formulations from example 1, improve these formulas further to produce all stable five kinds of adhesive coated formulas continuing the blend of the component of instruction in table 2 at least 24 hours.

table 2: the binder formula of amendment

Component A to F as above in example 1 as described in.Sample 9 and 10 is relevant to the sample 1 and 2 from example 1 respectively.Sample 11 is modification of the sample 5 from example 1.All the other sample formulations are new.

Show after excellent compatibility continues at least one sky at these five kinds of binder formulas, these five samples all with about 1% light trigger ( kTO46, gondola Ning Baidi group (LambertiSpa, Italy)) combine and then test further.Light trigger is made up of the liquid mixture of trimethyl benzoyl diphenyl base phosphine oxide, alpha-alcohol ketone and benzophenone derivates.Then sample is coated in film substrate, these film substrates comprise ethene-vinyl acetate base ester copolymer (EVA), metallocene linear-low density polyethylene (LLDPE) and about 12% organic clay composition (organo-clay of about 57% to 63% and maleic anhydride grafted linear low density polyethylene carrier, Polyone Corp (the PolyOneCorporation in Mai Ke Henry city, Illinois, McHenry, IL)).Specifically, substrate has the organic clay composition of (EVA) of about 77 % by weight, the metallocene LLDPE of about 10 % by weight and about 13 % by weight.Then solidified sample after being coated to film substrate, wherein applies UV radiation to be cured by below " D " bulb by three times, should " D " bulb be mercury and iron halide bulb.Approximately 75mJ/cm2 to 100mJ/cm2 is equal to below once-through D bulb.After curing of coatings, assess the state of cure of settable cementitious oxidant layer and be adhered to the validity of film.

According to ASTMD5204, use and be called that the solvent resistant friction test of MEK (MEK) friction test is to test the state of cure of adhesive agent.Good solidification result is illustrated by the MEK friction valve of 100 two frictions or more, and this shows that adhesive cures well and therefore the resistibility to the MEK rubbed above it is shown.The not shown good resistibility to MEK of adhesive agent (such as, 10 two frictions or less) of bad solidification.MEK friction test result can be seen in following table 3.

Also observe and subjectively report the viscosity of adhesive agent and initial peeling force.Observe the stickness of adhesive layer afterwards in touch, and with low (L), in (M) and high (H) scale assessment levels of adhesion.Similarly, also with the subjective power required for L, M and H scale assessment hand strip off sample.These test results can be seen in table 3.

table 3: the solidification of filling a prescription for table 2 and the test result of preliminary adhesive force.

All samples has at least moderate tackiness and peel strength.Sample 10 has the highest subjective viscosity and peeling force but solidification is the poorest, and as confirmed by the MEK friction test institute of about 10, this shows that adhesive agent removes from substrate after the rubbing for about 10 times of MEK.Sample 12 and 13 has haziness after execution MEK friction test, is most possibly because component D (that is, Polybutadiene-styrene copolymer) rises to surface when rubbing with MEK.Therefore, although sample 12 and 13 drops in required adhesive agent ratio ranges, component D does not show and other two kinds of component compatibility, is not therefore gratifying binder mixtures.Need to find out the MEK friction test with moderate or lower subjective viscosity result, moderate or higher subjective peeling force and 100 two frictions or more and there is no the muddy adhesive agent forming (at least, sample 9 and 11 shows such result).

example 3

By apply adhesive agent to the same film substrate such as described in example 2 and then test three kinds of different modification of binder formula with the solidification of three kinds of different modes be solidified with validity; Business machine performs UV curing schedule (" UV solidification "), to solidify in similar commercial system to UV but utilizing electron beam technology to perform electron ray (EB) curing schedule (" EB solidifies "), and on laboratory equipment, performing EB solidification (" EB is laboratory curing ").Following table 4 shows the formula of three kinds of tested adhesive agents.Commercial EB system and laboratory EB system all compare due to the different-energy grade of supplying separately.Acrylic acid oligomer is CN111US, and elastic body is 3500, and tackifier are CN3001, described in example 1.

table 4: sample cohesive agent prescription

" UV solidification " comprise make coated sample in atmosphere with about 25ft/min by carrying out about 2 to 4 times below UV lamp, make below sample 2 to the 4 times length by UV lamp.About 100mJ/cm2 is equal to by the energy provided by UV lamp with 25ft/min1 time.Commercial system (Faustel, Inc. (FaustelCorporation that state of Wisconsin Germany is honest, Germantown, WI) " EB solidification ") under a nitrogen with about 125ft/min to about 250ft/min perform only once and with about 2 megarads to about 2.4 megarads perform, and " EB is laboratory curing " also performs under a nitrogen, under the EB system of laboratory, need to pass through for about 6 to 8 times, it operates with about 10ft/min.The integral dose of 6 to 8 room EB unit is by experiment that about 2 megarads are to about 4 megarads.Should be appreciated that and need the smooth surface process of adhesive agent fastener to realize good adhesive agent and adhesive agent peel strength in some cases.If the surface of adhesive agent is rough, such as have tangerine peel wrinkle, then adhesive agent fastener often can not adhere to each other well.According to observations, all cured coated samples all have the equal smooth and surface treatment of level.After solidification all samples, test peel strength according to ASTMD3330/D3330M-04 method F, these results are shown in following table 5.

table 5: the peel strength result of different curing process (UV and electron ray)

Surprisingly, find that UV curing process (UV solidification) is better than two kinds of EB solidifications.The EB solidification that commercial line performs does not have adhesive force at all, that is, peel strength is 0gpli.EB is laboratory curing has some adhesive forces, but UV solidified sample has best adhesive force generally.

Solidify result according to UV, sample 15 and 16 has the peel strength (that is, being respectively 480gpli and 680gpli) of tolerance interval, and sample 14 has lower peel strength (that is, 200gpli).In sample 14, see that lower peel strength may be that it does not drop on (that is, it has ratio 2.2) in scope needed for 0.5 to 1.5 because the binder formula of sample 14 use.

Do not wish by theoretical restriction, it is believed that the UV radiation curing in ambient air (about 21% oxygen) provides up towards the solidification on its surface bottom sample, this is because oxygen is to contiguous or inhibited close to the radically curing in the adhesive agent part on surface.Sticky component is more adipose in essence, therefore in surface energy lower than such as ester or urethane component.In some cases, if give grace time, chemical system self-organizing is to possible minimum energy state.In this case, it is believed that the slower solidification rate of UV technique gives the sticky component of sufficient time for coating towards surface migration.On the contrary, EB curing process causes faster reaction solidification rate, therefore provides the comparatively random arrangement mode of poly-mer, and wherein it can not develop the sequence certainly that significant surface energy drives too quickly at the built-in grade separation connection of the polymer network of growth.Therefore, EB solidification can have the solidification pattern contrary with UV radiation process, and wherein EB solidification usually purges in environment at nitrogen and occurs and can solidify quickly in surface and more slowly solidify near substrate.This only can produce diverse adhesive agent behavior based on different curings.Usually, this type of rapid solidification is desirable, but, when solidifying coating disclosed herein, this type of rapid curing is disadvantageous, because its time not giving abundance disperses (transpire) in the process become complete ordering to make adhesion component.

Do not wish by theoretical restriction, also it is believed that the slower cure time of UV radiation curing allows the polymer unit of growth to arrange himself, make the polarity unit of poly-mer like substrate but not polarity unit likes surface, wherein at the near surface of substrate, there is nonpolar unit and allow adhesive coated combination and adhere to himself.This allows the adhesion component the most compatible with film substrate to be gathered in adhesive agent/substrate interface place, thus strengthens substrate adhesive force, and this can be and contributes to a factor from basilar memebrane delamination does not occur.

example 4

The fastener (sample 17 and 18) of two reclosables based on adhesive agent of the present invention is prepared pointed by table 6.By these two sample cohesive agent and from the commercial NabiscoChipsAhoySnack ' n using standard P SA packaging (Fasson5700, Avery Dennison Corp (Fasson5700, AveryDennisonCorp., the Pasadena in PASADENA, Calif. city, CA) the standard pressure sensitive adhesive agent fastener (PSA tester, sample 19)) obtained compares.

table 6: based on the fastener formula of adhesive agent

Coated substrate comprises general vertical ten thousand 231-615 (PolyOne231-615) masterbatch of organo clay fillers composite of the EVA of about 77.2%, the metallocene LLDPE of about 10% and about 12.8%.Masterbatch comprises the organo-clay of about 57% to about 63% and contains MA-LLDPE and poly carrier.Solidified sample 17 under the average oven temperature that the UV curing station of the average linear velocity of the average light energy and about 100ft/min with about 730mJ/cm2 is in 130 °F.Solidified sample 18 under the UV curing station of the linear velocity of the luminous energy and about 100ft/min with about 700mJ/cm2 is in the oven temperature of 160 °F.Standard binders (PSA tester) provides with the final form adhering to cookie packaging (Kraft Foods).

Debris contamination test food particle is performed whether by the sealing of its corresponding adhesive agent of negative effect to all three packagings.Chip test step comprises the following steps: first, obtains biscuit, and use bottom glass jar and crush.Crush by this way biscuit formed by with to be present in bag at the bottom of the consistent granule of particle.Next, 2 inch diameter ring fixtures are placed on the adhesive agent of sample to be tested.About 5 grams of chips are placed in the ring on sample.Waggle sample and ring are docked in the adhesive surface of the fastener of reclosable to make chip lightly.Remove ring from sample, and shake off chip from sample lightly and arrange.Ring is placed back at its initial position in substrate, and visually assessment is exposed to the amount of the chip of the region reservation of chip.Use the vision equal of zero to 100, wherein zero means do not have appreciiable Remaining debris, and 100 mean that whole surface is all coated with adhesion chip.The result of biscuit crumbs test illustrates in table 7.

In addition, after polluting with biscuit crumbs, test the peel strength of adhesive agent.Standard testing operation (ASTMD3330/D3330M-04 method F) is used to measure peel strength, wherein by being peeled off and peel strength required for measuring tests the intensity of adhesive bond from opposite side side.Measure initial bonding strength, by the peel strength subsequently after biscuit crumbs initial contamination and the second peel strength after taking turns pollution with second of biscuit crumbs, take turns second the operation contaminated samples that in pollution, use is identical with initial contamination.The result of sample presents in table 7.

table 7: debris contamination test result

As can be seen from these results, the adhesiveness of PSA tester (namely, peel strength) (measuring as tested D3330/D3330M-04 method F according to ASTM) drop at only twice biscuit crumbs about 5% (that is, dropping to about 25gpli from about 500gpli) that it initially peels off force value after exposing.By contrast, both samples 17 and 18 based on adhesive agent retain after twice is exposed to biscuit crumbs its initially peel off force value at least about 41%, wherein sample 18 is in fact after polluting and repeating closed and show the peeling force of increase after opening.In addition, compared with the value 60 to 80 of PSA tester, the vision debris contamination grade based on the sample of adhesive agent is 0 to 10.

Also perform Rolling Ball Tack test to unpolluted sample 17,18 and 19, it is the modified version of ASTMD3121 and follows the test method parameter of ASTMD3121, except as otherwise noted.The surface of this amendment test measurement coating is many adheres to different materials by force, as the polar surfaces of rolling glass bead.

Spin method comprises: be placed on the glass bead at two inches of places above governing criterion slope in ASTM method and allow this ball to accelerate along slope downwards and roll to stride across the horizontal surface of pressure sensitive adhesives sample.The test pattern of amendment comprises use glass bead but not metal ball, and the diameter of glass bead is about 1/8 inch, and uses the shortening point of release (that is, as noted above, two inches, side on the slope) leaving slope.Stride across the distance that adhesive agent advances before stopping determine relative tack by measuring ball from ramp end.Compared with there is the coating of the shorter spin travel distance indicating higher tack level, the lower viscosity of longer spin travel distance instruction to the polar surfaces of glass bead, and indication coating has and lower clings the roller of packaging machine and the trend of metal surface.Longer spin travel distance also can with the lower trend correlation adhering to food debris.In this is measured, measure and be limited to maximum 4 inches, because the maximum sample size that can be used for testing is 4.0 inches × 4.0 inches.Result from Rolling Ball Tack test illustrates at table 8 place.

table 8: Rolling Ball Tack test results

Sample	Spin distance (centimetre (inch))
		17	>10(>4)
18	>10(>4)
		19 (PSA testers)	0.318(1/8)

As can be seen from these results, two invention samples 17 and 18 have the surface viscosity lower than tester, this be easy to by glass bead the fastener striding across reclosable surface and leave 4 inches long sample roll confirmed.On the contrary, glass bead almost clings PSA tester immediately when contacting PSA tester surface, the high viscosity surface of this indication coating.

example 5

Perform stripping repeated trial to reseal and stripping ability through repeated with test.Make about 20 samples; Use the binder formula from the sample 17 of example 4 to make sample 20 to 35, and use the binder formula from the sample 18 of example 4 to make sample 36 to 38.On the experimental coating line of commercial size, sample is made via flexographic plate coating processes.Liquid-containing binder application system be heated in advance 160 °F (71 DEG C) and cycle through the chambered doctor blade being installed to engraving chromium oxide ceramics roller.Liquid-containing binder coating is transferred to patterning rubber rollers by engraved roll (it is also controlled to 160 °F (71 DEG C) by temperature).Patterning coating is transferred to mobile basilar memebrane (that is, the technique shown in Fig. 6) again by patterning rubber rollers.After leaving coating station, film travels across the baking oven section of 60ft.The UV treater be made up of 3 row UV lamps is positioned at baking oven exit.Have and cause applying the MAXPATHLEN between the coating station of material and UV curing station in the line configuration in the exit end Chu UV district of baking oven, this to make before being solidified into crosslinking polymer network adhesive coated outflow for liquid the time quantum flattened to increase to maximum.It is believed that in some cases, smooth and smooth coating surface contributes in completely crued adhesive agent, realize required adhesive agent and adhesive agent peeling force.

Execution series of experiments applies.Linear velocity, oven temperature and UV lamp bank number change.Experimental design and Germicidal efficacy are summarised in following table 9.Determine visual surface roughness, MEK resistibility and the adhesive agent adhesive agent along sample and the degree of separation of adhesive bond line before test.In general, the sample produced with 300ft/min to 500ft/min linear velocity has rough surface appearance and low or without subjective peeling force.It is impossible that the instrumentation peeling force of these samples is measured for major part, because the sample engaged was separated voluntarily before can testing further.The sample produced with 100ft/min has smooth surface appearance and moderate adhesive agent and adhesive agent peeling force.Instrumentation peel test force characterizes these samples further, as summed up in table 10 and table 11 subsequently.The sample (as shown in table 9) be not separated voluntarily is only had to repeat to peel off-reseal in test to test.These are samples 21,22,29,30,31,32,35,36 and 38.

table 9: for the preparation of the experimental design of peeling off repeated test sample

Use the short interval (that is, peeling off-reseal about 3 minutes intervals between circulation) between peeling off to perform first group and peel off test.Table 10 comprises the result of this test, wherein provides the aviation value of two samples for each condition test.These results and the sample 19 (PSA tester) from example 4 are compared.

show to delay for 10:3 minute to peel off-reseal test result

Comparatively long duration interval between use stripping (namely, peel off-reseal about 24 h apart between circulation) perform second group of stripping test, to understand the impact of longer adhesive agent-adhesive agent contact time, wherein first time peel off occur in prepare sample after about one week.The test result peeling off-reseal sample of delaying extended illustrates at table 11 place.

show to delay for 11:24 hour to peel off-reseal test result

These results show, the sample comprising the binder formula of the sample 17 from example 4 time length do not shown between peeling off is 24 little so significantly peeling forces reduction (that is, the sample 21,22,29,30,31,32 and 35 in this example) repeating usually to occur when peeling off constantly.When permission adhesive agent sample 17, between stripping, keep self-contact to continue about 24 constantly little, adhesive agent recovery up to about 85% its initially peel off force value, even if be also like this after five are peeled off-reseal circulation.Compared with other test sample, sample 30 has significantly lower Average peel force value.Although the sample engaged is not separated voluntarily, it has bad surface flatness, and this is owing to the higher line speed of 300ft/min.

In addition, find surprisingly, the sample comprising the binder formula of the sample 18 from example 4 in fact under the short time interval peeled off between test cycle and long-time interval repeat all to increase when peeling off peel off force value (, sample 36 in this example), this is similar to its pollution peel test results in table 7, proves to recover peeling force completely after repeating sealing.Only have sample 36 to demonstrate and peel off force value increase.Sample 36 is the samples using slower linear velocity to solidify, and this contributes to providing smooth and smooth sample surfaces (referring to table 9).Under the linear velocity higher than sample 36, make sample 38, thus obtain comparatively rough surface, this may be there is the reason peeling off force value reduction and low initial stripping force value.

By contrast, PSA tester only peel off between interval longer (that is, 24 hours) time demonstrate recovery behavior.Under short period interval, in fact tester makes peeling force reduce about 40%.

Generally, peel off-reseal test for two, person of best performance is sample 22,32,35 and 36.These four samples are all relevant to the adhesive agent using similar processing conditions to make.Such as, all four samples have the slow linear velocity of 100ft/min, and wherein at least two or more rows UV lamp is opened.The adhesive agent peeling off-reseal test crash may be do not have the sufficient time flowed out before UV solidification and flatten.

example 6

The adhesive agent sample 17 and 18 of use-case 4 (table 6) carries out ageing research, to understand longer adhesive agent and adhesive agent contact time to the impact of stripping performance.In the various performances of a week of Sundays build-in test adhesive agent, comprise subjective initial peeling force (namely, basic, normal, high), visual appearance after lift-off, subjective viscosity or cling finger trend (namely, without, basic, normal, high), Coating Durability (namely, MEK solvent resistibility test ASTMD5204) and instrumentation is peeled off, and (that is, use ASTMD3330/D3330M-04 method F repeats 5 strippings continuously with the interval of about 3 minutes to same sample; Test is carried out to two samples and averages together), it all carries out under adhesive agent contact time different from adhesive agent.By in the same film substrate that uses in adhesive coated to example 2.Following table 12 illustrates the ageing results of sample 17.Following table 13 illustrates the ageing results of sample 18.

table 12: the summary of the ageing research of sample 17

table 13: adhesive agent/adhesive agent contact time is on the impact (sample 18) repeating stripping performance

It should be noted that, mean peel strength value is the aviation value repeating to peel off for five times of the same sample peeled off continuously with the interval of about three minutes.Therefore, determine that first time peels off and records peel strength value, and reseal the fastener sample of reclosable.In the past after three minutes, the fastener of strip off reclosable again, and record peeling force intensity.Repeat this process, peel off until perform five times.

Subjective peeling force, subjective viscosity and MEK rubs test results are good for two samples 17 and 18, and the time length no matter adhesive agent contacts with adhesive agent.Peel off force value (that is, the initial stripping on same sample and follow-up stripping) sample 17 is consistent, and regardless of the time length that the adhesive agent in the scope of zero day to 7 weeks contacts with adhesive agent.Sample 17 shows much more consistent than sample 18 stripping-reseal circulation.After the initial stripping of sample 17, the loss of adhesive agent and adhesive bond intensity (represented by the peeling force loss when follow-up stripping) usual each follow-up stripping is less than about 10%, and be consistent, and no matter adhesive agent and adhesive agent contact time.

Started at the 3rd week, all there is when peeling off aged samples visible change (that is, obviously bleaching and coefficient of opacity increase) in both samples 17 and 18.It is believed that this visible change proves owing to acting on the power of adhesive surface during peeling off at manual or instrument and causes the microcosmic surface of adhesive agent to be out of shape.Areal deformation does not affect the key performance attribute (that is, viscosity or peel strength) of adhesive agent.Finally, sample 17 shows better a little, and its peel strength increases in time, namely recovers peel strength, or between follow-up stripping, roughly maintain the stripping loss of about 10%.

example 7

The fastener (sample 39 to 41, it has formula as shown in table 14) of the fastener sample 17 of the reclosable based on adhesive agent of the present invention from example 4 and three other reclosables based on adhesive agent of the present invention is compared.

table 14: based on the fastener formula of adhesive agent

B component R144 is regarded as acrylic acid oligomer (BR144, the Bo Ma specialized company (BomarSpecialtiesCompany, Torrington, CT) in Tuo Lingdun city, the Connecticut State).Component CN2302 is also regarded as acrylic acid oligomer (CN2302, Sartomer (SartomerCompany)).All three samples 39 to 41 have added acrylic acid oligomer BR144, and wherein sample 39 and 40 has two kinds of acrylic acid oligomers, and sample 41 has three kinds of acrylic acid oligomers is present in formula.

By in the same film substrate that uses in adhesive coated to example 2.There is the UV curing station place of average linear velocity of about 25ft/min and three times by the UV lamp of about 400mJ/cm2 to about 600mJ/cm2 altogether under solidified sample 39 to 41.

Test the Coating Durability (that is, MEK solvent resistibility test ASTMD5204) of four kinds of adhesive agents and use ASTMD3330/D3330M-04 method F to test initial bonding strength.Also perform Rolling Ball Tack test, it is the modified version of the ASTMD3121 as described in example 4, is about 2.5 inches wide takes advantage of about 7 inches long unlike the sample size that can be used for testing.These results show in table 15.

table 15: the solidification using table 14 to fill a prescription and the test result of adhesive force.

Compared with only having a kind of sample 17 of acrylic acid oligomer component, the initial bonding strength (that is, the initial stripping performed in laboratory conditions) of new formula increases about 30% to 300%.Compared with sample 17, the Rolling Ball Tack distance of new formula increases more than 300%.

As can be seen from these results, compared with sample 17, the new formula with two or more acrylic acid oligomers has the performance of overall improvement, as by spin test and peel strength test confirm.All samples all has splendid solidification rate, confirmed by MEK friction test.Specifically, all fresh sample formulas (namely, sample 39 to 41) there is the surface viscosity lower than sample 17, and specifically, sample 40 and 41 has even better low surface viscosity, as be easy to by glass bead the fastener striding across reclosable surface and leave 7 inch long sample roll confirm.

example 8

The fastener that test carrys out four reclosables based on adhesive agent of the present invention of test case 7 is peeled off for various repetition.Initial strip off also opens sample, use ASTM test method D3330/D3330M-04 method F with gram/linear inch (gpli) measures peeling force for unit, then reseals three minutes, and repeat to peel off.Every three minutes repeat this and seal-reseal, until obtain ten data points.These results present in following table 16.

table 16: test is delayed in stripping in three minutes

example 9

Use and perform delayed repetition in 24 hours test from four of example 7 identical samples of the present invention.Initial strip off also opens sample, the peeling force required for measurement.Then, reseal sample and allow it to stop 24 hours under controlled environment (that is, 72F and 50% relative humidity (RH)), until it is again again peeled off and opens.Repeat this operation, until collected five data points altogether or continued time of 5 days.These results present in following table 17.

show to peel off for 17:24 hour and delay test

All four samples maintained its stripping performance all the time in five day test period, and wherein any sample does not all drop to below 400gpli in any test day.In fact sample 39 and 41 increases peeling force and recovers initial peeling force or increase peeling force at test period.Therefore, the time allowing these samples to keep sealing to continue at least 24 hours allows these samples to recover or increases adhesiveness.

example 10

In example 10, four samples described in use-case 7 perform the test similar with example 9; But, after each peel-to-open, bonded areas is contacted with whole coffee bean, reseals, and allow it to remain closed lasting 24 hours, and again peel off.

After each peel-to-open, whole coffee bean to be placed in adhesive surface and to remove in less than five minutes.Reseal sample and allow it to stop 24 hours under controlled environment (that is, 72 °F and 50%RH), until it is again again peeled off and opens.Repeat this operation, until collected five data points altogether or continued time of 5 days.These results present in following table 18.

table 18: peel off for 24 hours after coffee bean pollutes and delay test

Although data display peel strength reduce a little, peel value use whole coffee bean five stripping/Pollution Cycles after still more than 200gpli.

example 11

The Rolling Ball Tack not having the film of adhesive agent to perform as described in example 4 is tested to compare with the viscosity value of low adhesive bond agent.These results provide in following table 18.Rolling #3 from sample 1 makes quite anxious turning soon after contact membranes.

table 18: the Rolling Ball Tack of uncoated film is tested

Sample	1	2
			Rolling #1	16.75	15.875
Rolling #2	18	18
			Rolling #3	10.875	14.25
Rolling #4	17.25	18.125
			Rolling #5	20.25	19.875
Rolling #6	15

Aviation value	16.35	17.23

Those skilled in the art will recognize that, can under prerequisite without departing from the spirit and scope of the present invention, many amendments, change and combination are made to embodiment described above, and this kind of amendment, change and combination fall into being regarded as in the scope of design of the present invention.

Claims

1. be configured to a sheet material for the packaging being folded into reclosable, described sheet material comprises:

There is the flexible material sheet material of edge, inside face and exterior face;

With the foldable portion be set up across the mode of described sheet material, described sheet material is divided into the first plate and the second plate by described foldable portion, and described first plate and described second plate are configured to be folded relative to each other about described foldable portion;

Along the bond regions at its edge in the described inside face of described sheet material, described bond regions has respectively in described first plate and the first relative bond regions part on described second plate and the second bond regions part;

Described first bond regions part and described second bond regions part are configured to engage when described first plate of described sheet material and described second plate fold about described foldable portion to form sealed package; And

The described edge of described sheet material with between described bond regions, along described seal-packed each edge, the relative unsealing outward flange lid limit of described inside face, described relative unsealing outward flange lid limit is configured to be booked and pulls open to be separated described first bond regions part and described second bond regions part.

2. sheet material according to claim 1, wherein said sheet material comprises relative end margin and relative lateral edges, and the complementary coupled assembly being included in the described inside face of described sheet material, arranging along end margin described in it, one in described complementary coupled assembly another along the one in described relative end margin and in described complementary coupled assembly is along another relative end margin; Wherein said bond regions extends along each in described relative side with between described foldable portion at described complementary coupled assembly.

3. sheet material according to claim 2, the described relative unsealing outward flange lid limit of the described inside face of wherein said folded sheet material is also arranged between each end margin of described sheet material and respective complementary coupled assembly.

4. sheet material according to claim 2, wherein said complementary coupled assembly is interlocking band.

5. sheet material according to claim 4, wherein said interlocking band tightens together by using slide fastener members.

6. sheet material according to claim 1, is also included in one or more intennediate bond district extended between described bond regions, described bond regions along the described edge of described sheet material in the described inside face of described sheet material.

7. sheet material according to claim 1, wherein said foldable portion is fold line.

8. sheet material according to claim 7, the wherein said fold line mark be arranged in described exterior face or described inside face marks.

9. sheet material according to claim 7, wherein said fold line is by crimping in advance.

10. sheet material according to claim 1, wherein said relative unsealing outward flange lid limit comprises the first lid limit and the second lid limit, and the part being greater than described second lid limit at least partially on described first lid limit.

11. 1 kinds are configured to the sheet material being folded into reclosable packages, and described sheet material comprises:

To be set up foldable portion between said edges across the mode of described sheet material, described sheet material is divided into the first flexible board and the second flexible board by described foldable portion, and described first flexible board and described second flexible board are configured to be folded relative to each other about described foldable portion;

Along the bonding material that the edge of described first flexible board and described second flexible board is arranged in described sheet material inside face;

Described bonding material is configured to aim at, and is folded together about described foldable portion in response to described first plate of described sheet material and described second plate and is joined together;

Described bonding material comprises the pressure sensitives of UV solidification, and the pressure sensitives of described UV solidification comprises the curable acrylic acid oligomer of at least one UV, at least one viscosity controls component and at least one elastomeric material alternatively;

The adhesion component ratio (ACR) of the pressure sensitive adhesives of described UV solidification is defined by formula (A), and the percentage by weight of the acrylic acid oligomer that wherein said UV is curable controls the percentage by weight of component and described optional at least one elastomeric material summation relative to described viscosity is about 0.5 to about 1.5

Described ACR is actv., so that the fastener based on adhesive agent of the UV solidification of described reclosable has about 100 grams/linear inch (gpli) to first peel adhesion between the adhesive agent of described joint of about 900gpli, and be separately about 30% to about 200% of described first peel adhesion between the adhesive agent of described joint, reach five follow-up peel adhesion; And

The bond strength of pressure sensitive adhesives to described sheet material inside face that wherein said ACR and described package wall are solidified for the described UV of formation is actv., described bond strength is greater than described first peel adhesion between described adhesive agent and described follow-up peel adhesion, so that described first plate can not made described relative adhesive layer from the delamination of described sheet material inside face with described second plate by repeatedly peeling away.

12. sheet materials according to claim 11, wherein said sheet material is by the multiple sheet materials be detachably fixed in winding configuration.

13. sheet materials according to claim 12, wherein said multiple sheet material is wound with folded configuration.

14. sheet materials according to claim 11, are also included in one or more intennediate bond district extended between described adhesive agent, and described adhesive agent is arranged in the described inside face of described sheet material along the described edge of described sheet material and establishes.

15. sheet materials according to claim 11, wherein said foldable portion is fold line.

16. sheet materials according to claim 15, wherein said fold line is by crimping in advance.

17. sheet materials according to claim 11, wherein:

Described sheet material has lateral edges and end margin;

Described foldable portion is to be arranged between described lateral edges across the mode of described sheet material; And

The end bonding material band that the described bonding material be arranged in described sheet material inside face comprises side bonding material band that the described lateral edges along described first flexible board and described second flexible board arranges and arranges along the described end margin of described first flexible board and the second flexible board.

18. sheet materials according to claim 17, the described bonding material band wherein arranged along the described edge of described first flexible board and described second flexible board and described marginating compartment are opened to provide binder free grip area.

19. sheet materials according to claim 17, the first peeling force between the described end bonding material band wherein engaged is less than the first peeling force between the described side bonding material band of joint.

20. sheet materials according to claim 19, the first peeling force of wherein said end bonding material band is about between 100gpli and 200gpli; And the first peeling force of described side bonding material band is at about 300gpli and about between 900gpli.

21. sheet materials according to claim 17, the corner region of wherein said end bonding material band and described side bonding material band is scallop shape.

22. sheet materials according to claim 17, the exterior section of at least one in wherein said end bonding material band and described side bonding material band is scallop shape, to be easier to open when described bonding material band is engaged.

23. sheet materials according to claim 11, wherein said bonding material is set up in the most mode of the described inside face across described sheet material.

24. sheet materials according to claim 23, wherein said bonding material is set up in the mode of the described whole inside face across described sheet material.

25. 1 kinds are configured to the sheet material being folded into reclosable packages, and described sheet material comprises:

There is the flexible material sheet material of end margin, lateral edges, inside face and exterior face;

With the foldable portion arranged across the mode of described sheet material, described sheet material is divided into the first flexible board and the second flexible board by described foldable portion, and described first flexible board and described second flexible board are configured to be folded relative to each other about described foldable portion;

The complementary coupled assembly that the described inside face of described sheet material is arranged along its end limit, an assembly is along the one in described relative end margin, and the assembly of complementation is along another end margin;

Along the relative adhesive agent band that each in lateral edges described in it is arranged in the described inside face of described sheet material;

To be arranged on the foldable portion between described lateral edges across the mode of described sheet material, described sheet material is divided into the first flexible board and the second flexible board by described foldable portion, described first flexible board and described second flexible board are configured to be folded relative to each other about described foldable portion, also engage hermetically form sealed inside to make described complementary coupled assembly and described adhesive agent swath alignment; And

Between described lateral edges and described adhesive agent band and between described end margin and described coupling assembly, the relative unsealing outward flange lid limit of the described inside face of the described folded sheet material arranged with end along described seal-packed every side, described relative unsealing outward flange lid limit is configured to be booked and pulls open to be separated described first adhesive strip band portion and described second adhesive strip band portion, to be separated the coupling assembly along the adhesive agent band of the joint of described lateral edges and the joint along described end margin.

26. sheet materials according to claim 25, wherein said foldable portion is fold line.

27. sheet materials according to claim 26, wherein said fold line is by crimping in advance.

28. sheet materials according to claim 25, wherein said coupling assembly is interlocking band.

29. sheet materials according to claim 28, wherein said interlocking band tightens together by using slide fastener members.

30. sheet materials according to claim 25, are also included in one or more intermediate band extended between at least one in described side adhesive agent band and described coupling assembly; One or more intermediate band wherein said is configured to provide with folding aligning of described sheet material the ability described sealed inside being divided into multiple sealed inside.