CN105121295B - It can be formed as the sheet material of resealable packaging - Google Patents

Abstract

The present invention provides a kind of packaging for including flexible material sheet material, the sheet material has the first configuration of general planar configuration and the second configuration of folding and sealed configuration.In the flat configuration, before sealing and later, user can be by the use of the sheet material as working surface.The flexible material includes the sealing area on foldable portion and the first packaged unit and the second packaged unit that are arranged on the opposite side of the foldable portion.When needing to pack, user can be generally concerned with the foldable portion and fold the sheet material so that the sealing area is substantially aligned with each other.The user can then press the sealing area of the alignment and adjoining to ensure to seal.In order to contact sealing content, user can be simply by the complaint material portion of the folding sealing area substantially drawn apart from one another with Detaching and Lapping.

Description

It can be formed as the sheet material of resealable packaging

Cross reference to related applications

This application claims the U.S.61/794 submitted on March 15th, 2013,029 equity, patent application full text is to draw It is incorporated herein with mode.

Technical field

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

Background technology

A type of packaging as known in the art is bag or packet, is usually made of flexiplast or film.This type Type is packaged as substantially rectangular and three side seals so that packaging is with the opening for offer contact package interior.One In kind of form, packaging receives the lid using being used for from the lid side for the material that the side of opening extend and on opening opposite side The pouch on side is closed, and is similarly to envelope.In another form, include sliding block or laminated type across opening Slide fastener closing structure is configured as sealing the packaging.

Although disclosure satisfy that many purposes, these packagings are likely difficult to load in big and bulky for opening It is tolerant, such as sandwich.It is especially true for content at random or lax.In an illustrative example, in order to store flower Raw sauce and jelly sandwich, user must make sandwich and then sandwich are loaded into packaging.In order to by sandwich It keeps together, user is in sandwich sandwich and puts in packaging sandwich being placed on wherein.If sandwich from its Side leaks, then peanut butter and/or jelly can be stained around packaging inside or opening, in a complete mess so as to make.

Invention content

Disclosed herein is a kind of packaging for including flexible material sheet material, the first configuration and folding with general planar configuration Folded and sealed configuration the second configuration.In flat configuration, before and after use, the sheet material can be used as work in user Surface or table mat prepare content.Then, when needing to pack, user can surround required content folding sheet material to incite somebody to action Content seals wherein.Advantageously, flexible material includes foldable portion or fold line, no matter whether it is by advance crimping (pre-crimped), by the sealing area on label mark or opposite side that is imaginary and being arranged on fold line.Therefore, when Need when packing of folded configuration, user can be generally concerned with foldable portion folding sheet material so that sealing area substantially that This alignment.User can then press the sealing area of these alignments and adjoining to ensure to seal.In order to contact sealing content, use It family can be simply substantially drawn apart from one another to detach sealing area by the complaint material portion of folding.User then can advantageously beat Sheet material is shakeout for use as working surface or table mat after opening.

In the first form, include flexible material sheet material, the flexible material sheet material includes edge, inside face and outer Portion face.Foldable portion is arranged between edge in a manner of across sheet material and sheet material is divided into the first flexible board and second soft Property plate.Adhesive strip band is set along its lateral edges in the inside face of sheet material, and along its side in the inside face of sheet material Edge sets end adhesive strip band.Adhesive strip band includes the be separately positioned on the first plate and the second plate first opposite adhesive strip Band part and the second opposite adhesive strip band part, are configured to be aligned, and in response to the first flexible board of sheet material It is folded together with the second flexible board about foldable portion and is joined together and is packed with being formed.The packaging is also wrapped Include the inside face of the sheet material being folded between the edge of sheet material and adhesive strip band along the seal-packed setting per side One or more opposite unsealing outer edge lid sides, these opposite unsealing outer edge lid sides are configured as being booked And it pulls open to detach first binder strip portion and the second adhesive strip band part, with the binding agent engaged along edge separation Band.

The packaging may additionally include one extended between at least one of side adhesive strip band and end adhesive strip band Or more intermediate band.One or more intermediate band be configured as sealingly engaging and to User's offer will pack inside and be divided into multiple abilities for packing inside.

In the second form, include flexible material sheet material and low adhesive bond agent.Sheet material has edge and across edge Foldable portion.Sheet material is divided into the first flexible board and the second flexible board by foldable portion, and low adhesive bond agent along The edge of first flexible board and the second flexible board is arranged in sheet material inside face.Binding agent is configured as being aligned, and in response to The first plate and the second plate of sheet material are folded together about foldable portion and are joined together.Therefore, in order to form Two configurations pack, and user can be arranged on the first flexible board and second about foldable portion folding sheet material to be substantially aligned with It low adhesive bond agent on flexible board and presses to surround content seal stock therein.Low adhesive bond agent can have such as Performance described herein and composition.

In the third form, include flexible material sheet material, complementary coupling assembly (such as interlocking band) and can weigh Novel sealing binding agent.The sheet material has end margin, lateral edges, inside face and exterior face.Foldable portion is with across the side of sheet material Formula is set piece being divided into the first plate and the second plate.In this form, symmetrical sealing area respectively includes one mutually The coupling assembly of benefit and resealable binding agent.First coupling systems are installed to sheet material and are adjacent to an end margin, and will Second coupling assembly is installed to sheet material and is adjacent to another end margin.Therefore, when sheet material is in flat configuration, the first coupling systems On the opposite flank of the sheet material of part and the second coupling assembly on the either side positioned at fold line.Resealable binding agent includes The opposite side strip being arranged in sheet material inside face is adjacent to sheet material between the first coupling assembly and the second coupling assembly Lateral edges extend.Therefore, it is packed to be formed, user can be substantially aligned with the first auxiliary section about fold line folding sheet material Point and the second mating part and be substantially aligned with resealable binding agent.The packaging further includes the inside face for the sheet material being folded Opposite unsealing outer edge lid side, respectively between lateral edges and adhesive strip band along it is seal-packed per side and It is set between end margin and coupling assembly along seal-packed end.Opposite unsealing outer edge lid side is configured to It is booked and pulls open to detach first binder strip portion and the second adhesive strip band part, to detach connecing along lateral edges The adhesive strip band of conjunction and the coupling assembly of the engagement along end margin.

By another way, the resealable binding agent of above-mentioned form can be the low of following article more detailed description composition Adhesive bond agent.Low adhesive bond agent has its own the affinity than other surfaces or material bigger.Thus, seal area Low adhesive bond agent in domain can keep sealing performance, even if it is also such that binding agent is contacted with the content packed.

Description of the drawings

Fig. 1 is the perspective view of the first form of resealable packaging, and wherein flexible sheet material is in flat configuration, has The resealable binding agent at its neighbouring edge；

Figure 1A is the perspective view of the second form of resealable packaging, and wherein flexible sheet material is in flat configuration, has There are the resealable binding agent at its neighbouring edge and intermediate resealable adhesive strip band；

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

Fig. 3 is by being separated into the sheet material packed for the resealable of Fig. 1 across the fragile part that flexible material extends Flexible material roller perspective view；

Fig. 4 is the perspective view of the third form of resealable packaging, and wherein flexible sheet material is in flat configuration, has Pairing closing section on opposing ends thereof and the resealable extended between closing section on its each side glue Tie agent；

Fig. 4 A are the perspective views of the 4th form of resealable packaging, and wherein flexible sheet material is in flat configuration, has There are the resealable binding agent of its neighbouring lateral edges, the complementary coupled component of its neighbouring end margin and intermediate resealable Adhesive strip band；

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

Fig. 6 is the perspective view of the 5th form of resealable packaging, and wherein flexible sheet material is in flat configuration, has The resealable binding agent at its neighbouring edge；

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

Fig. 8 is by being separated into the sheet material packed for the resealable of Fig. 6 across the fragile part that flexible material extends Flexible material roller perspective view.

Specific embodiment

Generally speaking, according to these various modes, device and method provided in this article describe one kind and are configured for The packaging of reclosable changed between first flat open configuration and the second fold seals configuration, various forms in Fig. 1 extremely It is shown in Fig. 8.Examples described herein form can be advantageously employed the outer peripheral binding agent along film web material, pairing is closed Structure or combination is closed to be opened and closed between the first configuration and the second configuration.

Turning now to the details of the first exemplary form, as depicted in figs. 1 and 2.Resealable packaging 10 includes sheet material 12, it is shown at the first general planar or spreads configuration out.The packaging of this form utilizes flexible film package or plastic sheet Material.Package sheet material can be flexible single-layer or multilayer film, sheet material or other materials, including such as polyethylene terephthalate (PET), polypropylene (PP) (its can or can not be uniaxially oriented or biaxially oriented), linear low density polyethylene (LLDPE), The materials such as ethylene-vinyl alcohol (EVOH) and/or polyethylene (PE), name just a few.In some modes, by extending laterally across Sheet material 12 is divided into the first sheet portion 14 and the second sheet portion 16 by the fold line 18 of entire sheet material 12.In other modes, By foldable area or part 18 by sheet material part 14,16.Optional fold line 18 can be by advance crimping to sheet material 12 In, such as by being folded mechanically, indentation (continuously or discontinuously) and/or can on sheet material 12 have instruction, such as print Mark, label etc., to clearly illustrate its position.It constructs by doing so, packaging 10 can be about fold line or foldable portion 18 To fold so that first part 14 and second part 16 are in contact with each other or located adjacent one another.

In a kind of mode, sheet material 12 includes the first end margin 20 and the second end margin 22 and the first opposite side edge 24 With the second opposite side edge 26.First opposite side edge 24 limits the lateral edges of sheet portion 14 and in fold line or foldable The second opposite side edge 26 is connected at part 18 (it limits the lateral edges of sheet portion 16) so that lateral edges 24,26 are being held It is extended continuously between edge 20,22.It should be appreciated that the exemplary shape shown in attached drawing, which only provides resealable, packs 10 Hes One example of sheet material 12.Other sizes, shape and configuration are also possible.

In the first of Fig. 1 and Fig. 2 graphic form, packaging 10 further includes the first bond regions 28 and the second bond regions 30, It is respectively around the first packaged unit or the periphery of 14 and second packaged unit of plate or plate 16 or perimeter setting.As described herein, Binding agent can be in any way as suitable deposited or printed on sheet material 12.First bond regions 28 and the second bond regions 30 are about folding Line or foldable portion 18 are substantially symmetric so that area 28,30 pivoted in the first packaged unit 14 and the second packaged unit 16 or It is substantially aligned with when folding.More particularly, each of the first bond regions 28 and the second bond regions 30 may each comprise The end binding agent agent part 32 and neighbouring first opposite side edge 24 and the second opposite side edge that neighbouring end margin 20,22 extends The opposite side binding agent part 34 of 26 extensions.In one form, bond regions 28,30 have around the substantially equal of 12 periphery of sheet material Even width, 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 crosses fold line or foldable portion 18 are connected to each other and are connected to its respective end binding agent part 32 so that the first bond regions 28 and the second bond regions 30 provide Complete around 12 periphery of sheet material is closed binding agent boundary, and also provides across two sheets part 14,16 substantially without viscous Tie agent inner surface 36.In the flat configuration of Fig. 1, inner surface 36 can be used as working surface.For example, inner surface 36 can be used as being used for It makes the placement surface of sandwich etc. or is used as table mat during dining.

If necessary, bond regions 28,30 may include scalloped edge or interruption part, i.e. non-adhesive is to outer portion Band so that when bond regions 28,30 are sealed together, it is easier to be isolated.These scallop shape, bands etc. are extensible The length of bond regions 28,30, be limited to one or both of one or both or end 32 in side 34, its selected part or One or both of turning of connect the side 34 and end 32.

Although sheet material 12 be shown as it is substantially rectangular and be configured as being folded into it is substantially rectangular pack, may be used also To utilize other suitable shapes as described above.For example, sheet material 12 can be configured as being folded into triangle and pack, have Corresponding bond regions, sheet material can also be roughly circular or oval or other symmetric shapes.

Construct by doing so, user is ready for pack content (if necessary), by content be placed on its first On inner surface 36 in part or second part.Then, user can fold opposite segments about fold line or foldable portion 18, The first bond regions 28 and the second bond regions 30 are substantially aligned with, and press alignment area 28,30 with by 24 and of the first packaged unit Second packaged unit 26 is sealed, to form sealing internal 38, and therefore formed or constructed as Fig. 2 substantially shown in sealing Bag or packaging.It, can be in any edge other than folding 18 by first part 14 and the when user wishes to open packaging It substantially pulls open to contact content and/or the inner surface 36 of expansion is used as table mat etc. in two parts 16.

In one form, bond regions 28,30 are spaced apart with the neighboring edge 20,22,24,26 of sheet material 12 so that are surrounded The outside binder free part of all marginal existences other than folded edge 18, edge or the lid side 40 of hermetic bag or packaging, As depicted in figs. 1 and 2.These binder free parts 40 provide non-adhering grasping surface so that user is by 28 He of the first bond regions Second bond regions 30 grasp when being sealed and detach the first bond regions 28 and the second bond regions 30.Advantageously, user is optional Any adhesive edge is selected to open, and user is not limited to open single opening as previous flexible package.In fact, User even can open simultaneously two or more edges via part 40.Alternatively, only end binding agent agent part 32 can be with end edge Edge 20,22 is spaced apart or only if the stem portion of end binding agent agent part 32 and side binding agent part 34 is recessed or has Non-adhesive grip portion.

As depicted in figs. 1 and 2, the first packaged unit 14 and the second packaged unit 16 are substantially symmetric.However, be not must It must be in this way, because only the first bond regions 28 and the second bond regions 30 be substantially symmetric so that it is folded about fold line 18 It is sealed when first part 14 and second part 16.Therefore, as shown in Figure 6 to 8, one of first part and second part can It is longer so that there is separate sealed configuration extension is easier to grasping and longer lid side 40.In addition, first part and second Divide and various shapes and size can be used to provide only performance and attract consumer attention.Non-adhesive part, lid while or while Edge 40 can have arbitrary size relative to adhesive strip band or the width in area 28,30.In certain methods, the width of part 40 exists In the range of about 1/16 inch to about 1/4 inch, and the width of binding 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 be of about 1 inch, and part 40 is wide than binding agent 28,30.

As shown in Figure 1A, it shows the sheet material 12 of alternative form, is similar to the sheet material of Fig. 1, thus, common segment is shared Identical reference label.In this fashion, sheet material 12, which can also have, is arranged on inner surface 36 and in end binding agent agent portion Divide one or more adhesive strip bands 42 extended between 32；Setting is on an internal surface and between side binding agent part 34 One or more pairs of symmetrical binding agent/caking property bands 44 of extension；Or any combination of them.These bands 42,44 allow to use Family is divided into inside sealing 38 inside multiple smaller sealings by the way that required band 42,44 is directed at and pressed in folding sheet material 12 36A.This will advantageously allow for user separately to store different contents in independent sealing area, area or bag in same packaging Object.As shown in the figure, band 42,44 is substantially perpendicular to each other and extends perpendicular to adhesive strip band 28,30,32；However, these Band 42,44 can also incline towards each other extension, such as diagonally extend across sheet surface 36.

In Fig. 4, Fig. 4 A and the second form shown in fig. 5, packaging 50 is shown and Fig. 1, Figure 1A and packaging shown in Fig. 2 With many similitudes.Consequently, to facilitate explaining, similar features structure will use similar reference label.The packet of this form It fills 50 and includes sheet material 12, be shown at general planar or spread configuration out.By extending transversely through its entire folding Line or foldable portion 18 divide sheet material 12 for first part 14 and second part 16.As shown in the figure, sheet material 12 includes first end 20 and second end margin 22 of edge and the first opposite side edge 24 and the second opposite side edge 26.First opposite side edge 24 exists The second opposite side edge 26 is connected at fold line 18 so that lateral edges 24,26 extend between end margin 20,22.

The packaging 50 of this form includes the first bond regions 52 and the second bond regions 54, is separately positioned on the first packing department Points 14 and second on packaged unit 16.First bond regions 52 and the second bond regions 54 are substantially symmetric about fold line 18 so that area 52nd, 54 pivoted in the first packaged unit 14 with the second packaged unit 16 together with when be substantially aligned with.More particularly, first is viscous Each of 52 and second bond regions 54 of interface include neighbouring first opposite side edge 24 and the second opposite side edge 26 prolongs The opposite side binding agent part 56 stretched.In graphic form, bond regions 52,54 have substantially uniform width, about 0.25 Inch is between about 1 inch, and it is highly preferred that about 0.5 inch.

Packaging 50, which further includes, is respectively adjacent to the first and second non-adhesive complementary coupled groups that packaging end margin 20,22 extends Part 58,60.Non-adhesive coupling assembly 58,60 is configured as sealingly engaging, connect or engaging when being pressed together.One In kind of mode, non-adhesive coupling assembly can be bulky joint, velcro (Velcro), occlusion and slider zipper type fastener, only Lift several.As shown in the figure, opposite side binding agent part 56 is prolonged between the end 62 of coupling assembly 58,60 and fold line 18 It stretches so that there are the binding agents of continuous whole length between the corresponding end 62 of coupling assembly 58,60.Then, when first Points 14 and second part 16 when pivoting or fold about fold line or foldable portion 18, the first bond regions 52 and second Bond regions 54 and coupling assembly 58,60 are respectively aligned to.User can be then respectively in bond regions 52,54 and coupling assembly 58,60 Upper application pressure, using by package encapsulation as sealed configuration shown in fig. 5.By another way, coupling assembly 58,60 can pass through It is sealed using slide fastener members etc..

As shown in the figure, mating component 58,60 and the first bond regions 52 and the second bond regions 54 connect to provide in restriction The complete closing seam boundary on surface 64.In flat configuration, inner surface 64 can be used as working surface.For example, inner surface 64 can As for making the placement surface of sandwich etc. or table mat.

Construct by doing so, user is ready for pack content (if necessary), by content be placed on its first On inner surface 64 in part or second part.Then, user can fold opposite segments about fold line 18, make the first bond regions 52 and second bond regions 54 and mating component 58,60 be substantially aligned with, and press with by the first packaged unit 14 and the second packet Dress part 16 is sealed to form sealing internal 66.Fig. 4 A are turned to, the packaging 50 of this form can also be in being arranged on One or more optional adhesive strip bands 42 extended on surface and between coupling assembly 58,60；It is arranged on interior table The one or more pairs of optional symmetrical adhesive strip bands 44 extended on face and between side binding agent part 56；Or their group It closes, as shown in Figure 1A.

In one form, coupling assembly 58,60 is spaced apart with adjacent 12 end margin 20,22 of sheet material so that is existed and is grabbed Surface 68 is held so that user is isolated when the first mating component 58 and the second mating component 60 are sealed.User can connect It is about fold line 18 that first part 14 and second part 16 is substantially drawn apart from one another to detach the first bond regions 52 and the continuation Two bond regions 54.In addition, if side binding agent part 56 can be spaced apart with lateral edges 24,26 or the cadre of side binding agent part 56 Divide and be recessed or the edge similar with Fig. 1, Figure 1A and Fig. 2, lid side are provided or grabbed with non-adhesive grip portion 70 Hold surface.

As shown in Fig. 4, Fig. 4 A and Fig. 5, the first packaged unit 14 and the second packaged unit 16 are substantially symmetric.However, It is not required in this way, 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 is substantially symmetric about fold line 18.Therefore, one of first part and second part can be longer so that there is separate sealing The lid side for being easier to grasp of configuration extension.In addition, various shapes and size can be used to provide in first part and second part Novelty and attract consumer attention.

In another form, can be low adhesive bond agent suitable for the sheet material of this paper or the binding agent of packaging, such as U.S. General description in patent application serial numbers 13/035,399, the U. S. application are incorporated by herein.Specific low viscosity The more details of binding agent are stated below.

In one aspect, the low adhesive bond agent for bond regions 28,30,52,54 and sheet material 12 is generally fabricated to Or with certain composition so that binding agent and the adhesion strength on unwanted surface or food are minimized and at the same time having still functioned as The fastener of the reclosable of effect.That is, binding agent has unique formula or structure to realize selected viscosity and peel value so that Fastener based on binding agent during use repeatedly can be opened and closed content being sealed in packaging 10,50 in consumer In, but simultaneously not from the film substrate delamination for the opposite inner face for forming sheet material 12.

For this purpose, binding agent, which can be UV, cures binding agent, having makes what the adhesion strength on unwanted surface was minimized Relatively low levels of adhesion, be enough to realize the selected bonding securely re-closed of packaging 10,50 or open peel strength and The peel strength to realize the repetition of packaging 10,50 opening and re-close firm enough.Meanwhile binding agent also has to sheet material The strong adhesive power of 12 film substrate so that binding agent not delamination when opening packaging 10,50.By a kind of mode, binding agent can Specific blends including the UV acrylic acid oligomers that can be cured and Adhesion control agents.In other modes, binding agent may include The specific blends of acrylic acid oligomer, Adhesion control agents and elastomer (rubber) component that UV can be cured.

Preferably, binding agent is to show adhesive property and the cured pressure sensitive adhesives of less viscous UV (PSA), although tool There is low viscosity, but still the film substrate of the opposite inner face with forming sheet material 12 forms good bond.Such as general understanding, based on viscous The material of knot agent is generally easier to adhere to identical material (that is, self-adhesion) rather than different materials.Suitable bead bond used herein Material usually goes out unwanted surface exhibits relatively low viscosity, but still required surface exhibits is gone out simultaneously good viscous Intensity (such as not from flexible front plate and back plate delamination) is closed, and relatively good bonding is shown to similar face or self-adhesion glues Intensity is closed so that flexible package or bag to be kept to be closed, but still permits to strike open or peeling off packaging with the hand.It is selected based on binding agent Material also permit from such identical material unsticking or stripping so that adhesive layer can be repeated stripping without to binding material And/or any following substrate causes significantly to destroy.When binding material unsticking or stripping, selected binding material has enough Internal soundness and usually substantially neatly peeled off in adhesive bond interface and take, draw without lot of materials band Silk damages (that is, dough, pilling etc.) from the notable shape of other of substrate delamination and/or material.Advantageously, herein based on viscous The fastener for tying agent maintains certain peel adhesion, wherein opposite adhesive strip band is to be greater than about 80 grams/linear inch (gpli), the average initial peel adhesion and preferably between about 80gpli and about 900gpli is in contact with each other.In addition, In some cases, the fastener 14 based on binding agent is remained above about 80gpli after five repetition sealings and decapping operation And/or at least about 30% to about 200% average initial peel adhesion.

On the other hand, packaging 10,50 and binding agent are additionally configured to interactively with each other so that binding agent and table in sheet material 12 The bonding in face or peel strength are generally larger than the opening peel strength between adhesive layer itself.In this way, when with binding agent quilt When peeling off and opening packaging 10,50 by consumer, binding agent generally remains the inner surface for being adhered to sheet material 12 and does not have substantially There is band to take, wire drawing or the inner surface delamination from sheet material 12.For example, and in a kind of mode, binding agent and packaging film substrate Bonding or peel strength are greater than about 900gpli, and multiple strippings and again can be subjected in the case where not detached from film substrate Novel sealing recycles.In addition, binding agent is cured so as to be subjected to using methyl ethyl ketone (MEK) solvent (ASTM D5402-06) It is more than double frictions of 100 times.

Preferably, binding agent is UV cured, and it is highly preferred that UV curing PSA binding agents show adhesive property and Low viscosity, but form good bond with the film substrate of sheet material 12.Such as general understanding, the material based on binding agent is generally easier to Adhere to identical material (that is, self-adhesion) rather than different materials.Suitable bonding material used herein is not usually to needing to Surface exhibits go out relatively low viscosity, required surface exhibits are gone out with good adhesive strength (such as not from flexible first plate With the second plate delamination), and similar face is shown fairly good bonding or self-adhesion adhesive strength with keep flexible package or Bag is closed, but still is able to strike with the hand open or be peeled off.The selected material based on binding agent is also permitted from such identical material unsticking Or stripping so that adhesive layer can be repeated stripping without causing significantly to destroy to binding material and/or any underlying substrate. When binding material unsticking or stripping, selected binding material has enough internal soundness and usually in adhesive bond Interface substantially neatly peel off taken without lot of materials band, wire drawing, other essence from substrate delamination and/or material are ruined It damages (that is, agglomerate, pilling etc.).

First component of binding agent is the acrylate or acrylic acid oligomer that one or more UV can be cured.For example, UV Curable acrylic acid oligomer can be acrylate or methacrylate with multiple reactivity or functional groups (that is, acrylic acid oligomer or methacrylic oligomer).In general, functional group includes a UV reaction site.UV reacts Site is most commonly that the carbon-carbon double bond for being coupled to another unsaturated sites (such as ester carbonyl group).By a kind of mode, UV can consolidate The acrylic acid oligomer of change is the acrylate or methacrylate of polyfunctional alcohol, it means that oligomer is in the carbon of oligomer There is the hydroxyl more than an acroleic acid esterification or methacrylated on hydrogen main chain.By a kind of mode, binding agent can wrap The acrylic acid oligomer that the UV for including about 1 weight % to about 90 weight % can be cured and the degree of functionality with about 1.2 to about 6.0. In a further mode of operation, the acrylic acid oligomer that UV can be cured can have the degree of functionality of about 2.0 to about 3.0 and/or viscous It is provided in knot agent with about 20 weight % to the amount of about 70 weight %.

In one form, multifunctional UV curable acrylates are the vegetable oil that reactive functional group degree is 2.0 or bigger Acrylate.On the other hand, the acrylic acid oligomer that UV can be cured may include epoxidised soybean oil acrylate.It is general next It says, based on preferred adhesion component ratio (ACR) (will be discussed herein), the acrylic acid oligomer that used UV can be cured Amount can influence the performance of final binding agent.For example, based on preferred ACR, the amount for the acrylic acid oligomer that UV can be cured is too low In the case of, the solidification rate of final binding agent is too slow.On the other hand, based on preferred ACR, the acrylic acid that UV can be cured is low In the case that the amount of polymers is too high, final binding agent can be sufficiently solidified, but may with insufficient self-adhesion sealing and It reseals.

Second component of binding agent is Adhesion control agents.By a kind of mode, binding agent can include about 1 weight % to about 65 The Adhesion control agents of weight %.In a further mode of operation, Adhesion control agents can about 20% to about 65% amount exist.Viscosity control Preparation may include tackifying resin or curable polymer/combination of monomers, and required levels of adhesion can be generated in curing and is fitted For the self-adhesion of the fastener of reclosable.In one aspect, Adhesion control agents may include Aliphatic urethane acrylate Change oligomer.The many other types that is suitable for UV and can be cured PSA binding agents can be also used in the bonding system of reclosable Adhesion control agents.

The optional third component of binding agent is elastomer or rubber components.By a kind of mode, elastomeric component may include At least one curable acroleic acid esterification of hydroxy-end capped elastomer polymer (that is, elastomer polyalcohol) is (that is, acrylic acid Modified) or methacrylated ester.This elastomeric component may include acrylic acid modified polybutadiene, saturation polybutadiene Alkene and/or flexible polyurethane.In one aspect, it is possible to provide methacrylated polybutadiene.When in a binder in use, Elastomeric material can about 0 to about 20% amount provide.In one aspect, elastomeric material is carried with the amount of about 5% to about 15% For.Satisfactory binding agent can be formed into low viscosity needed for as described herein, resealable performance without Elastomeric component；However, it is believed that elastomeric component helps to realize best paintability.Best bond agent performance can be by such as The performances such as self-adhesion, viscosity, viscosity and solidification rate (naming just a few) limit.Elastomeric component is to adjustment peel strength performance, base Bottom adhesion strength, raising is flexible, viscosity controls and solidification rate adjustment is useful.

Appropriate cured binding agent can by the ASTM D3330/D3330M-04 methods F Average initial peel strengths measured In about 80gpli to about 900gpli, and in the range of specifically about 280gpli to about 800gpli.Binding agent is also designed To keep its Average peel force (that is, adhesion strength holding) after opening and closing operation is repeated.Preferably, cured binding agent Its average initial peel adhesion is kept after strippings-the reseal cycle that can be repeated up at least five about Between 280gpli and about 800gpli.Preferably, removing-resealing-when removing, adhesion strength retention value can about 30% to Between about 200% initial value conservation rate.After binding agent is polluted by clast, adhesion strength retention value can be about 30% to about Between 150% initial value, wherein clast Contamination measurement method is as described herein.

In a further mode of operation, at least part of sheet material 12 and in some cases contact binding agent outer layer can wrap It includes polymer coating, layer, filler and/or sealant layer and is glued with enhancing the interface between binding agent and the package base of sheet material 12 It closes.In one form, polymer coating may be selected from ethylene vinyl acetate (EVA), polyolefin (such as polyethylene) or them Blend.If used, then polymeric layer may include that adherency promotes filler particles.In one form, filler can be clay, carbon Sour calcium, montmorillonite, crystallite silica, dolomite, talcum powder, mica, oxide (silica, aluminium oxide, titanium oxide etc.) and other The filler of the micron or nanosized of additive and/or combination thereof is added at least polymer coating, the first plate 14 And/or in the superficial layer of the package base of second plate 16, the sealant layer about this or sheet material 12 or on, glued with enhancing fastener Tie agent and the bonding of sheet material 12.

In particular, organo clay fillers can be used, and in one aspect, organo clay fillers are organically-modified illiteracies De- stone.Organic clay is organically-modified natural clay, is such as processed with the surfactant of such as quaternary ammonium salt or the illiteracy of processing takes off Stone clay.Montmorillonite is phyllosilicate class mineral, generally includes hydration sodium calcium aluminium magensium silicate hydroxide.It is not intended to accept By limitation, the substrate of organic clay filling can help to create operable and reclosable the closure based on binding agent The ability of structure, because filler helps to form good bond between low adhesive bond agent and package base so that work as opening Binding agent is not from the package base delamination of sheet material 12 during packaging 10,50.

Clay or other fillers are effectively dispersed in the polyethylene of the sealant layer of the package base available for sheet material 12 With can be challenging due to the incompatibility of clay filler and certain polymer in EVA or in other coatings.Therefore, it uses Fill composition supply filler comprising the filler being blended with compatible vehicle helps that filler is mixed to and is distributed to sealant layer In.By a kind of mode, clay filler in for coating or can be applied to the maleic anhydride grafted linear low-density of substrate and gather It is supplied in ethylene carrier (MA-LLDPE).It is not intended to be restricted by theory, the maleic anhydride moities of carrier have parent to clay filler And power, and the other polymers good mixing of the polyethylene part of carrier and sealant layer.Exemplary nandclay filler composition It is purchased from the Polyone Corp (PolyOne Corporation, Avon Lake, Ohio) of Ohio Ai Wen Hu Shi.It is not intended to Bound by theory, it is believed that organo-clay particle (it can be highly polar) and/or the existing Malaysia together with clay filler Acid anhydrides grafted linear low-density polyethylene (MA-LLDPE) vector resin can be used to improve by the surface that increases basal layer Cure adhesive coated and substrate surface adhesion strength.

It is further believed that on a microscopic level, clay or other filler additives can basad imparting surface roughness, with The friction coefficient of actively impact substrate and increase effective contact area between substrate and coating, so as to provide more sites with For chemistry and/or mechanical adhesion occurs.Pass through a kind of mode, it is contemplated that about 0.5 weight % to about 20 weight % in sealant layer Fill composition there is Beneficial Effect to the adhesive strength of binding agent and the package base of sheet material 12 so that the bonding to substrate Power is more than the peel adhesion between binding agent part, so as to the not delamination when opening of seal area 28,30,52,54 of engagement.Separately Outside, filler can make substrate surface coarse so that it can be free to slide without bonding on the metal surface of packaging facilities, therefore The migration for making it possible to reduce or eliminate in polymer coating or layer helps sliding additive.

In some cases, the optional components of the polymeric layer in the substrate of sheet material 12 may include that migration helps sliding additive, It helps to reduce the friction coefficient between substrate and other surfaces, so as to allow substrate free on metal surface or its own It slides.In one aspect, it is possible to provide erucyl amide helps sliding additive (that is, unsaturated aliphatic primary amide).It has used Sliding additive is helped in the range of 2000ppm to 7000ppm；However, it has been found that under these high levels, it is difficult to make binding agent The low energy surface of substrate is adhered to, because helping the surface site that sliding additive blocking can adhere to.However, addition filler is permitted Perhaps sliding additive is helped using much lower level, such as less than about 1000ppm.In other cases, substrate has and is less than about 700ppm's helps sliding additive or does not help sliding additive in other cases.Substrate and other are reduced due to the use of filler Friction coefficient between surface, this is that previously passed addition migration helps the effect that sliding additive is realized, thus this allow to reduce or Eliminate the concentration that migration helps sliding additive.Sliding additive level is helped to can also aid in increase curing than usually used low migration It coating and substrate initial and bonds over time, because there is the bonding that less additive interferes coating and substrate.No Wish to be restricted by theory, it is believed that fatty acid amide (it is lower-molecular-weight component) the transportable or bloom helped in sliding additive (bloom) to the surface of polymeric layer, so as to influence the adhesive strength between sheet material 12 and binding agent.However sided corona treatment or fire Flame processing can initially burn out any fatty acid amide on polymer layer surface, strong so as to obtain the initial excellent bonds of binding agent Degree.Over time, in addition fatty acid amide is transportable or bloom is to polymer layer surface, this causes in extended shelf life It is interior that there is the adhesive strength reduced.

In addition, before package base is applied adhesive to, in some cases, substrate can undergo surface preparation with Increase surface and can and/or apply primer coating.For example, it may be possible to surface treatment may include sided corona treatment, at plasma Immersion coating, such as priming paint or adhesion promotor also can be used in reason, flame treatment etc..Sided corona treatment can increase substrate Surface can, bonded which improve coating and remain adhered to the ability of substrate.Corona pre-treatment may include ion cloud, oxygen Change surface and surface is caused to be easy to receptive coating.Reaction site in corona pre-treatment substantially oxypolymer substrate.Such as Fruit carries out sided corona treatment, then it is desirable that surface can should be about 40 dynes or bigger after the treatment.

It is not wishing to be bound by theory, in some cases, it is believed that the sided corona treatment of substrate surface is due to the table of substrate surface Face can increase and help to provide good bond between coating and substrate surface.Other than sided corona treatment, helped with low concentration Sliding additive pretreatment and added in substrate fill composition combination formed together reclosable fastener and substrate it Between good bond.

In order to which balanced peeling force, viscosity and bonding force of the realization with package base is such as described herein, it has been determined that three kinds viscous Knot component amount needs fall acrylic acid oligomer relative to the specific adhesion component ratio of elastomer and sticky ingredient (that is, ACR in).Preferably, the ACR of binding agent is：

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

Have been found that formula in three kinds of components the ACR ranges provide to different material (that is, machine part, clast, Particle, food crumbs etc.) there is low viscosity, but bonding that can be enough or peel strength are sealed to its own to maintain therebetween Seal and resist unique binder formula of pollution.Binding agent in the specific ACR is also provided is being played open and close by repetition The resealable function that its sealing-stripping-reseals quality will not be significantly reduced or lost during closing operation.Below about 0.5 ACR values it is typically undesirable because binding agent will need significantly a large amount of UV energy to cure.If ACR is greater than about 1.5, then binding agent can rapidly cure, but it will also have low (or nothing) peel strength, this is closed binding agent herein It is unacceptable for structure.Other than required ACR ranges, satisfactory binder formula is gone back in some cases Can have certain other parameters, the stabilized with mixture of such as component, certain dispensing viscosity, certain solidification rate and/or Certain peel strength.

The adhesion component of the ACR is not only needed, but also adhesion component must also be compatible with each other so that they form stable Flowable liquids mixture.As used herein, when binding agent (in the case of minimum, two or three of key component) is at holding Kept when continuing up to three days under room temperature (about 70 °F to 75 °F) homogeneous liquid (that is, visible phase separation without component and There is no gel-forming) when, it is considered stable.

In addition, the viscosity of binder formula at room temperature can in about 10,000 centipoises to about 50,000 centipoises (cPs) or more It is about 2000cPs or smaller in small range or under about 160 °F (71 DEG C), and in some cases, at 160 °F (71 DEG C) under be about 200cPs or smaller.This range of viscosities is provided will be viscous using conventional printing, roller coating or slit die application technology Knot agent is applied to film substrate.

In order to generate fully cured adhesive layer in substrate, can be used can deliver in about 100mJ/cm²To about 800mJ/cm²In the range of energy UV light sources curing binding agent.This assists in ensuring that binding agent fully cures again, by about Double frictions (MEK rub resistances test value (ASTM D5402-06)) confirmation of 100 times or more times (herein will be further detailed It discusses).

By a kind of alternative, the first peel adhesion between the end binding agent agent band 32 of engagement is less than engagement The first peel adhesion between side adhesive strip band 34.For example, the first peel adhesion of end binding agent agent band 32 can be Between about 100gpli and 200gpli；And the first peel adhesion of side adhesive strip band 34 can about 300gpli with about Between 900gpli.In other words, the peel adhesion of the side adhesive strip band 34 of engagement can be the end binding agent agent band of engagement About the 3 of 32 peel adhesion are strong to about 9 times again.

By a kind of alternative, by using low adhesive bond agent, such as bonded with composition as described above, first Area and the second bond regions can have than broader range discussed above or can cover the first packaged unit 14 and the second packing department Divide 16 largely or entirely.Low viscosity will allow sheet material 12 to be still used as working surface, because binding agent will not substantially glue It is attached to the content of packaging 10,50.For example, be completely covered sheet material 12 by enable consumers to customization sheet material 12 size and Therefore the size that customization gained is packed.This can be by being preferably bonded content and reducing to the shell head gap around content Minimum provides the shelf-life of growth for the perishable content of packaging.

Low viscosity can also advantageously be used for by packing and storing be sheet material 12 continuous rolling 100, as shown in figures 3 and 8.Because Low adhesive bond agent does not adhere to other surfaces substantially, so it tends not to adhere to the adjacent sheet 12 in roller 100 Outer surface so that be then unfolded and remove the cohesive force that sheet material 12 will not need to overcome normal glu agent as needed.One In kind mode, individual sheet material 12 can be separated by mechanical means or laser means by cut or perforation pattern 102.This allows to use Family removes sheet material 12 from roller 100 as needed, is similarly to the operation of paper handkerchief roller.In addition, using sheet material roller 100 as storage System desirably reduces packaging material, that is, be attached to more in smaller area, and can in contraction or flow-wrapped and The roller is packed in non-packaging carton.Alternatively, sheet material 12 can individually wrap up in packet on roller 100 as separate sheet, wherein user's letter Singly it is unfolded to remove pre-cut sheet material.In another mode, sheet material 12 can be stacked or roll in distributor It stacks, wherein user is peelable, pull or otherwise removes sheet material 12 for using.

In the most or all of mode of the first packaged unit 14 and the second packaged unit 16 is covered, sheet material 12 can quilt Continuous rolling is provided as, this sheet material that will allow size needed for consumer's cutting.Thus, sheet material 12, which will have, is similar to plastic wraps The function of film, but plastic wraps are not folded to the trend to itself and clung.

By a kind of alternative, sheet material 12 can be stored in the second folded configuration in roller 100.Make in this way, piece Material 12 is pre-folded, and bond regions 28,30 are sealed together, while is detachably fixed to adjacent sheet 12.Thus, User can draw from roller 100 and detach sheet material 12.User then substantially will pull open first part 14 and second part 16 to open Packaging, is inserted into required content, and reseal packaging 10.

Example

Example 1

Test the compatibility and stable storing of the various blends of acrylic acid oligomer, Adhesion control agents and elastomeric material Property (stability be defined as storing at room temperature up to 3 days after will not form gel or the mixture visibly detached).Under Table 1 shows that tested combination and used formula are horizontal.

Table 1：The binder formula of measuring stability

Component mark is as follows：

A=Acrylated Epoxies soybean oil (111 US of CN, the Sartomer of Pennsylvania's Exton (Sartomer Company,Exton,PA))。

B=methacrylateds polybutadiene (3500, Sartomer (Sartomer Company)).

C=thickening aliphatic acrylic acids oligomer (CN 3001, Sartomer (Sartomer Company)).The group Blend of the subpackage containing Aliphatic urethane acrylate Yu hydrocarbon tackifying resin.

D=polybutadiene styrenes (Ricon 184, Sartomer (Sartomer Company)).

E=thickening aliphatic urethanes acrylic acid oligomer (CN 3211, Sartomer (Sartomer Company))。

Tackifier concentrate (PRO 11236, Sartomer made of the low fragrant odour hydroxy-aromatic resin of F=light color (Sartomer Company))。

The stability or compatibility of these adhesion components can be the manufacture of liquid coating mixture, transport, store in factory and The factor used.Visually judged by the appearance and consistency of observed formula after storage 3 days (about 72 hours) Stability.It has been observed that the sample 1,2 and 5 in table 1 provides the visually satisfactory blend of various adhesion components, 3 It is remained after it uniform, that is, component is without visibly detaching or being formed gel.Although sample 2 obtains stabilized formulations, this Kind adhesion component has undesirable ACR and without curing well (that is, this can be from the following table 3 for similar preparation See in the MEK friction solidity tests of sample 10).However, sample 1 and 5 provides curing well and also has 0.5 to 1.5 In the range of required ACR stabilization binding agent blend.Other sample blends detach, and become too sticky and/or gelation (that is, sample 8 becomes gel-like after 3 days).Sample 8 forms gel, this show to be combined with tackifier component F by aliphatic third The composition that olefin(e) acid ester or component E are formed is incompatible.

Therefore, in order to realize the stabilization binding agent for being suitable for being used as being disclosed herein, stablize binding agent and usually require With one of following factor, 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 component parts exist (that is, acrylic acid is low Polymers, elastomer and Adhesion control agents).

Example 2

Initial adhesion agent compatibility based on the stabilized formulations from example 1 is as a result, be further improved these formulas to produce Raw all stablize continues at least 24 hours adhesive coated five kind formulas as the blend of component indicated in table 2.

Table 2：The binder formula of modification

Component A to F is such as described in example 1 above.Sample 9 and 10 is related to the sample 1 and 2 from example 1 respectively.Sample Product 11 are the modifications of the sample 5 from example 1.Remaining sample formulations is new.

Shown after excellent compatibility continues at least one day in this five kinds of binder formulas, this five samples all with about 1% photoinitiator (KTO 46, Italian Ning Baidi groups (Lamberti Spa, Italy)) combination and Then further test.Photoinitiator is by trimethyl benzoyl diphenyl base phosphine oxide, alpha-alcohol ketone and benzophenone derivates Liquid mixture form.Then sample is coated in film substrate, these film substrates are copolymerized comprising ethylene vinyl acetate Object (EVA), metallocene linear-low density polyethylene (LLDPE) and about 12% organic clay composition (about 57% to 63% Organo-clay and maleic anhydride grafted linear low density polyethylene carrier, the Pu Liwan in Illinois mikey Henry cities are public It takes charge of (PolyOne Corporation, McHenry, IL)).In particular, substrate has (EVA), about 10 weights of about 77 weight % Measure the organic clay composition of the metallocene LLDPE and about 13 weight % of %.Then the solidified sample after film substrate is coated to, Wherein by being cured three times by applying UV radiation below " D " light bulb, it is mercury and iron halide light bulb to be somebody's turn to do " D " light bulb.It is single It is secondary that 75mJ/cm2 is approximately equivalent to 100mJ/cm2 by D light bulbs lower section.After curing of coatings, assessment curing adhesive layer Curing degree and be adhered to the validity of film.

According to ASTM D5204, bonding is tested using the solvent resistant friction test of referred to as methyl ethyl ketone (MEK) friction test The curing degree of agent.Good curing result shows that this shows that binding agent is consolidated by the MEK friction valves of 100 double frictions or more Change resistance that is good and therefore showing the MEK to rubbing above it.Bad cured binding agent is not shown to the good of MEK Good resistance (for example, 10 double frictions or less).MEK friction test results can be seen in the following table 3.

It also observes and subjectively reports the viscosity of binding agent and initial peeling force.The adhesion of adhesive layer is observed after touch Property, and with low (L), in (M) and high (H) scale assessment levels of adhesion.Similarly, it is also peeled off with L, M and H scale assessment with hand The required subjective power of sample.These test results can be seen in table 3.

Table 3：The curing being formulated for table 2 and the test result of preliminary adhesion strength。

All samples have at least moderate tackiness and peel strength.Sample 10 have the subjective viscosity of highest and peeling force but Cure worst, as confirmed by about 10 MEK friction tests, this shows after about 10 times of MEK frictions, and binding agent is from substrate It removes.Sample 12 and 13 has cloudiness after MEK friction tests are performed, be most likely to be because of component D (that is, polybutadiene- Styrol copolymer) when being rubbed with MEK rise to surface.Therefore, although sample 12 and 13 is fallen in required binding agent ratio model In enclosing, but component D does not show compatible with other two kinds of components, therefore is not satisfactory binder mixtures.It needs to look for Provide the moderate or sticky result of relatively low subjectivity, moderate or higher subjective peeling force and 100 double frictions or more MEK friction tests are without the muddy binding agent for forming (at least, sample 9 and 11 shows such result).

Example 3

By to the same film substrate as described in example 2 apply binding agent and then with the curing of three kinds of different modes come Test the curing validity of three kinds of different modifications of binder formula；UV curing schedules are performed on business machine, and (" UV is solid Change "), (" EB is solid in the commercial system similar to UV curings but using electron beam technology execution electron beam (EB) curing schedule Change "), and EB curings (" EB is laboratory curing ") are performed on laboratory equipment.The following table 4 shows three kinds of tested bondings The formula of agent.Both commercial EB systems and laboratory EB systems are all compared due to the different-energy grade respectively supplied. Acrylic acid oligomer is 111 US of CN, and elastomer is3500, and tackifier are CN 3001, such as institute in example 1 Description.

Table 4：Sample cohesive agent prescription

" UV curings " is including making coated sample in air with about 25ft/min by below UV lamp and carrying out about 2 to 4 It is secondary so as to make 2 to 4 length lower sections by UV lamp of sample.By being equal with 1 energy provided by UV lamp of 25ft/min In about 100mJ/cm2.Commercial system (honest Faustel, Inc. of state of Wisconsin Germany (Faustel Corporation, Germantown, WI)) on " EB curings " 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 systems of laboratory, need Offer passes through for 6 to 8 times, is operated with about 10ft/min.6 to 8 integral doses by laboratory EB units are about 2,000,000 Ladd is to about 4 Megarads.It should be appreciated that the smooth surface of binding agent fastener is needed to handle to realize well in some cases Binding agent and binding agent peel strength.If the surface of binding agent is rough, such as wrinkle with tangerine peel, then binding agent Fastener tends not to adhere well to together.It has been observed that all cured coated samples be respectively provided with it is equal smooth and horizontal Surface treatment.After all samples are cured, peel strength is tested according to ASTM D3330/D3330M-04 methods F, these As a result it is shown in the following table 5.

Table 5：The peel strength result of different curing process (UV and electron beam)

It was unexpectedly determined that find better than two kinds EB curings of ultraviolet curing processing (UV curings).It is performed on commercial line EB curing at all do not have adhesion strength, that is, peel strength 0gpli.EB is laboratory curing to have some adhesion strengths, but UV cures There is best adhesion strength on population of samples.

According to UV curing as a result, sample 15 and 16 have tolerance interval peel strength (that is, respectively 480gpli and 680gpli), and sample 14 have relatively low peel strength (that is, 200gpli).Relatively low peel strength is seen in sample 14 May be because the binder formula that sample 14 uses, does not fall in 0.5 to 1.5 required range (that is, it is with ratio 2.2)。

It is not intended to be restricted by theory, it is believed that the UV radiation curings in surrounding air (about 21% oxygen) are provided from sample bottom Up towards the curing on its surface, this is because oxygen has the radically curing in the binding agent part adjacent or proximate to surface There is inhibiting effect.Sticky component is substantially more phat fat, thus surface can on be less than such as ester or carbamate Component.In some cases, if giving grace time, chemical system self-organizing to possible minimum energy state. In this case, it is believed that the slower solidification rate of UV techniques is given the sufficient time and moved for the sticky component of coating towards surface It moves.On the contrary, EB curing process leads to faster reaction solidification rate, therefore the more random arrangement of polymer is provided, In its too quickly the polymer network of growth built-in grade separation connection cannot develop that significant surface can drive from sorting.Cause This, EB curings can have the curing pattern opposite with UV radiation processes, and wherein EB curings usually occur in nitrogen purges environment And it can quickly cure at surface and more slowly cure near substrate.This can be based only on different curings and generate Entirely different binding agent behavior.In general, such rapid curing is desirable, however, when curing coating disclosed herein When, such rapid curing is unfavorable because its do not give the sufficient time dissipating (transpire) in the process so that Adhesion component becomes complete ordering.

It is not intended to be restricted by theory, it is further believed that the slower hardening time of UV radiation curings allows the polymer unit cloth of growth Put its own so that the polarity unit of polymer likes substrate rather than polarity unit to like surface, wherein the surface in substrate is attached It is near that there is nonpolar unit to allow adhesive coated combination and be adhered to its own.This allows and the most compatible bonding group of film substrate Divide and be gathered at binding agent/substrate interface, so as to enhance substrate adhesion strength, this can be to help not occur from basilar memebrane delamination One factor.

Example 4

Prepare fastener (17 He of sample of two reclosables based on binding agent of the invention as pointed by table 6 18).By the two sample cohesive agent with from the commercial Nabisco Chips Ahoy Snack ' n for using standard PSAPacket Fill (Fasson 5700, the Avery Dennison Corp (Fasson 5700, Avery in PASADENA, Calif. city Dennison Corp., Pasadena, CA)) obtained standard pressure sensitive binding agent fastener (PSA reference materials, sample 19) carries out Compare.

Table 6：Fastener formula based on binding agent

Coated substrate includes about 77.2% EVA, about 10% metallocene LLDPE and about 12.8% organic clay General vertical ten thousand 231-615 (PolyOne 231-615) masterbatch of fill composition.Masterbatch include about 57% to about 63% it is organically-modified Clay and the carrier containing MA-LLDPE and polyethylene.In average light energy and about 100ft/min with about 730mJ/cm2 The UV curing stations of average linear velocity be in solidified sample 17 under 130 °F of average oven temperature.With about 700mJ/cm2's The UV curing stations of the linear velocity of light energy and about 100ft/min are in 160 °F of oven temperature solidified sample 18.Standard bonds Agent (PSA reference materials) is provided with adhering to the final form of cookie packaging (Kraft Foods).

Whether food particle will negatively affect its corresponding binding agent from the point of view of performing clast Contamination measurement to all three packagings Sealing.Clast test step includes the following steps：First, it obtainsBiscuit, and crushed using glass pot bottom. Crushing biscuit is formed the little particle consistent with the particle for being present in bag bottom in this way.Next, 2 inch diameter rings are pressed from both sides Tool is placed on the binding agent of sample to be tested.About 5 grams of clasts are placed into the ring on sample.Lightly waggle Sample and ring are so that clast is docked in the adhesive surface of the fastener of reclosable.Ring is removed, and lightly from sample Shake off clast from sample and arranged.Ring is placed back in its initial position in substrate, and visually assessment is sudden and violent Reveal the amount of clast that the region of clast retains.Using zero to 100 vision equal, wherein zero mean it is not visible Remaining debris, and 100 mean that whole surface is covered with adherency clast.The result of biscuit crumbs test is shown in table 7.

In addition, the peel strength of binding agent is tested after with biscuit crumbs pollution.Use standard testing process (ASTM D3330/D3330M-04 method F) peel strength is measured, wherein by removing and measuring required side from opposite side Peel strength tests the intensity of adhesive bond.Measure initial bonding strength, with after biscuit crumbs initial contamination with Afterwards peel strength and with the second of biscuit crumbs wheel pollution after the second peel strength, second wheel pollution in use with it is first Begin to pollute identical process contaminated samples.The result of sample is presented in table 7.

Table 7：Clast Contamination measurement result

From such results, it can be seen that the adhesiveness (that is, peel strength) of PSA reference materials according to ASTM (as tested D3330/D3330M-04 methods F is measured) drop to about the 5% of its initial stripping force value after only biscuit crumbs exposure twice (that is, dropping to about 25gpli from about 500gpli).In contrast, both samples 17 and 18 based on binding agent are exposed twice To retaining at least about the 41% of its initial stripping force value after biscuit crumbs, wherein sample 18 actually after pollution and It repeats to be closed and shows increased peeling force after opening.In addition, compared with the value 60 to 80 of PSA reference materials, based on bonding The vision clast class of pollution of the sample of agent is 0 to 10.

Rolling Ball Tack test is also performed to unpolluted sample 17,18 and 19, is the modified version of ASTM D3121 And the test method parameter of ASTM D3121 is followed, unless otherwise specified.The surface of the modification test measurement coating is mostly by force Different materials are adhered to, such as roll the polar surfaces of glass marble.

Spin method includes：It is placed on glass marble above standard slope specified in ASTM method at two inches simultaneously And the ball is allowed to accelerate downwards along slope and rolls the horizontal surface across pressure sensitive adhesives sample.The experiment pattern packet of modification It includes and uses glass marble rather than metal ball, a diameter of about 1/8 inch of glass marble, and use the shortening point of release for leaving slope (that is, as noted above, two inches square on the slope).By measuring ball since ramp end before stopping across binding agent The distance of traveling determines relative tack.Compared with the coating of the shorter spin travel distance with instruction higher tack level, Longer spin travel distance indicates the relatively low viscosity to the polar surfaces of glass marble, and indication coating has relatively low cling The roller of packaging machine and the trend of metal surface.Longer spin travel distance can also be with the relatively low food debris that adheres to Trend correlation.In this measurement, measurement is limited to 4 inches of maximum, because the maximum sample size available for test is 4.0 inches × 4.0 inches.Result from Rolling Ball Tack experiment is shown at table 8.

Table 8：Rolling Ball Tack result of the test

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

From such results, it can be seen that two invention samples 17 and 18 have the surface viscosity lower than reference material, this is by glass Glass ball be easy to across the surface of the fastener of reclosable and leave 4 inches long sample rolling confirmed.On the contrary, glass marble PSA reference materials, the high viscosity surface of this indication coating are almost clung immediately when contacting PSA reference material surfaces.

Example 5

It performs stripping and repeats experiment and resealed and stripping ability by repeated with testing.Make about 20 samples Product；Sample 20 to 35 is made, and use the sample 18 from example 4 using the binder formula of the sample 17 from example 4 Binder formula make sample 36 to 38.Via flexographic plate coating processes sample is made on the experimental coating line of commercial size Product.Liquid-containing binder application system is previously heated to 160 °F (71 DEG C) and is cycled through to be installed to engraving chromium oxide ceramics The chambered doctor blade of roller.Liquid-containing binder coating is transferred to patterning by engraved roll (it is also controlled by temperature to 160 °F (71 DEG C)) Rubber rollers.Patterning rubber rollers will be patterned into coating and are transferred to mobile basilar memebrane (that is, technique shown in fig. 6) again.It is applied leaving After covering station, film travels across the baking oven section of 60ft.Baking oven exit is located at by the UV processors that 3 row's UV lamps form.Have Line configuration positioned at the port of export Chu UV areas of baking oven causes to apply the maximum between the coating station of material and UV curing stations Path length, this increases the time quantum for flowing out and flattening for liquid-containing binder coating before crosslinking polymer network is solidified into To maximum.It is believed that in some cases, smooth and smooth coating surface contributes in the binding agent being fully cured to realize institute The binding agent needed and binding agent peeling force.

Perform a series of experiments coating.Linear velocity, oven temperature and UV lamp number of rows change.Experimental design and experiment are seen It examines and is summarised in the following table 9.Determine visual surface roughness, MEK resistances and binding agent along the viscous of sample before test Tie agent and the separating degree of adhesive bond line.In general, have with the sample that 300ft/min to 500ft/min linear velocities is produced There is rough surface appearance and low or without subjective peeling force.The instrumentation peeling force measurement of these samples is for major part can not Can, because the sample of engagement voluntarily detaches before it can further be tested.Have with the 100ft/min samples produced Smooth surface appearance and moderate binding agent and binding agent peeling force.These samples are further characterized using instrumentation peel test force Product, as then summarized in table 10 and table 11.The sample (as shown in table 9) only not detached voluntarily repeat stripping-again It is tested in sealing test.These are samples 21,22,29,30,31,32,35,36 and 38.

Table 9：It is used to prepare the experimental design of stripping retest sample

First group is performed using the short interval (that is, about 3 minutes removing-resealing between cycle are spaced) between stripping Peel test.Table 10 includes that this is tested as a result, wherein providing the average value of two samples for each condition test.It will These results are compared with the sample 19 (PSA reference materials) from example 4.

Table 10：It delays within 3 minutes and removes-reseal test result

Using the longer duration interval between stripping (that is, removing-resealing the about 24 small times between cycle Every) second group of peel test is performed, to understand the influence of longer binding agent-binding agent time of contact, wherein removing for the first time It is happened at and prepares about one week after sample.Extended delay is removed-is resealed the test result of sample and show at table 11 Go out.

Table 11：It delays within 24 hours and removes-reseal test result

These are not the results show that the sample of the binder formula comprising the sample 17 from example 4 is shown in stripping Between duration when being 24 hours the so apparent peeling force that usually occurs when repeating to remove reduce (that is, this example In sample 21,22,29,30,31,32 and 35).Self-contact is kept to last about between stripping when allowing binding agent sample 17 At 24 hours, binding agent recovery is up to about 85% its initial stripping force value, even if after removing-resealing cycle at five Also it is such.Compared with other test samples, sample 30 has significantly lower Average peel force value.Although the sample of engagement is not It voluntarily detaches, but it with undesirable surface flatness, this is attributed to the higher line speed of 300ft/min.

In addition, it has therefore been surprisingly found that the sample of the binder formula including the sample 18 from example 4 is actually being shelled Force value is removed (that is, this reality from all increasing when repeating to remove under the short time interval and long interval of time between test loop Sample 36 in example), it is similarly to its pollution peel test results in table 7, it was demonstrated that restore completely after sealing is repeated Peeling force.Only sample 36 shows stripping force value increase.Sample 36 is using the cured sample of slower linear velocity, this contributes to Smooth and smooth sample surfaces (referring to table 9) are provided.Under the linear velocity higher than sample 36 make sample 38, so as to obtain compared with The reason of rough surface, this may be in the presence of the reduction of stripping force value and low initial stripping force value.

In contrast, recovery behavior is shown during interval of the PSA reference materials only between stripping longer (that is, 24 hours). Under short period of time, reference material actually makes peeling force reduce about 40%.

It removes-reseals for test generally, for two, person of best performance is sample 22,32,35 and 36.This Four samples are all related to using binding agent made of similar processing conditions.For example, all four samples have 100ft/min Slow linear velocity, wherein at least two or more rows UV lamp open.The binding agent for removing-resealing test crash may be not There is the sufficient time to flow out and flatten before UV curings.

Example 6

Ageing research is carried out using the binding agent sample 17 and 18 of example 4 (table 6), to understand longer binding agent and bonding Influence of the agent time of contact to stripping performance.The various performances of binding agent are tested in a week of Sundays, including subjective initial stripping Power (that is, basic, normal, high), visual appearance after lift-off, subjective viscosity or cling finger trend (that is, nothing, it is low, in, It is high), Coating Durability (that is, MEK solvents resistance test ASTM D5204) and instrumentation stripping be (that is, use ASTM D3330/D3330M-04 methods F was repeated 5 times same sample continuous stripping with the interval of about 3 minutes；Two samples are surveyed Try and average together), all carried out under binding agent time of contact different from binding agent.By adhesive coated to example In same film substrate used in 2.The following table 12 shows the ageing results of sample 17.The following table 13 shows the aging knot of sample 18 Fruit.

Table 12：The summary of the ageing research of sample 17

Table 13：Influence (sample 18) of the binding agent/binding agent time of contact to repetition stripping performance

It should be noted that mean peel strength value is the five of same sample continuously removed with the interval of about three minutes The secondary average value for repeating stripping.Accordingly, it is determined that it removes for the first time and records peel strength value, and reseal reclosable Fastener sample.In past three minutes and then the fastener of secondary stripping reclosable, and record peeling force intensity.It repeats The process, until performing five strippings.

Subjective peeling force, subjective viscosity and MEK rubs test results be for two samples 17 and 18 it is good, without The duration that pipe binding agent is contacted with binding agent.It is right to remove force value (that is, initial stripping and follow-up stripping on same sample) It is consistent for sample 17, the duration contacted but regardless of the binding agent in the range of zero day to 7 weeks with binding agent. Sample 17 shows stripping much more consistent than sample 18-reseal cycle.After the initial stripping of sample 17, binding agent with The loss of adhesive bond intensity usually each follow-up stripping (represented by the peeling force loss in follow-up stripping) is less than about 10%, and be consistent, but regardless of binding agent and binding agent time of contact.

Started at the 3rd week, when removing aged samples in 17 and 18 the two of sample all have visible change (, hence it is evident that Bleaching increases with opacity).It is believed that this visible change is proved due to acting on binding agent during manual or instrument is removed The power on surface and the microcosmic surface of binding agent is caused to deform.Surface deformation does not influence the key performance attribute of binding agent (that is, viscosity Or peel strength).Finally, sample 17 show slightly preferably, peel strength increases over time, that is, restore peel strength or About 10% stripping is substantially maintained to be lost between follow-up stripping.

Example 7

By the fastener sample 17 and three other this hairs of the reclosable based on binding agent of the present invention from example 4 The fastener (sample 39 to 41, with formula as shown in table 14) of the bright reclosable based on binding agent is compared.

Table 14：Fastener formula based on binding agent

Component BR 144 is considered as acrylic acid oligomer (BR 144, the Bo Ma specialized companies in Connecticut State Tuo Lingdun cities (Bomar Specialties Company,Torrington,CT)).Component CN 2302 is also regarded as acrylic acid oligomer (CN2302, Sartomer (Sartomer Company)).All three samples 39 to 41 have added in acrylic acid oligomer BR144, wherein sample 39 and 40 tool are there are two types of acrylic acid oligomer, and the tool of sample 41 is present in there are three types of acrylic acid oligomer and matches Fang Zhong.

It will be in the same film substrate used in adhesive coated to example 2.In the average linear speed with about 25ft/min At the UV curing stations of degree and three times by the UV lamp of about 400mJ/cm2 to about 600mJ/cm2 in total get off solidified sample 39 to 41。

It tests the Coating Durability (that is, MEK solvents resistance test ASTM D5204) of four kinds of binding agents and uses ASTM D3330/D3330M-04 methods F tests initial bonding strength.Rolling Ball Tack test is also performed, is as described in example 4 ASTM D3121 modified version, unlike available for test sample size be it is about 2.5 inches wide multiply it is about 7 inches long. These results show in table 15.

Table 15：The curing being formulated using table 14 and the test result of adhesion strength。

Compared with only having a kind of sample 17 of acrylic acid oligomer component, the initial bonding strength being newly formulated is (that is, in reality Test the initial stripping performed under the conditions of room) increase about 30% to 300%.Compared with sample 17, the Rolling Ball Tack distance that is newly formulated Increase more than 300%.

From such results, it can be seen that compared with sample 17, there is the new formula of two or more acrylic acid oligomers Performance with overall improvement, as confirmed by spin test and peel strength test.All samples are respectively provided with splendid curing Rate is confirmed by MEK friction tests.In particular, all new sample formulas (that is, sample 39 to 41) are with lower than sample 17 Surface viscosity, and in particular, sample 40 and 41 have even preferably low surface viscosity, such as by glass marble be easy to across The surface of the fastener of reclosable and leave 7 inch long samples rolling confirmed.

Example 8

For the various peel tests that repeat come the tight of four of test case 7 reclosables based on binding agent of the invention Firmware.Initially peel off and open sample, using ASTM Test Method D3330/D3330M-04 methods F with gram/linear inch (gpli) peeling force is measured for unit, then resealed three minutes, and repeat to remove.Every three minutes repetition this sealing- It reseals, until obtaining ten data points.These results are presented in the following table 16.

Table 16：Test is delayed in stripping in three minutes

Example 9

Delayed repetition in 24 hours is performed using the sample of four from the example 7 identical present invention to test.It is initial to peel off And sample is opened, measure required peeling force.Then, reseal sample and allow its controlled environment (that is, 72F and 50% relative humidity (RH)) under stop 24 hours, until it is removed and is opened again again.This operation is repeated, directly Until total of five data point has been collected or continue time of 5 days.These results are presented in the following table 17.

Table 17：Test is delayed in stripping in 24 hours

All four samples maintained its stripping performance always in five day test period, and any of which sample is not any Test day drops to below 400gpli.Sample 39 and 41 actually increases peeling force and restores initial peeling force or in the test phase Between increase peeling force.Therefore, allow these samples keep sealing continue time of at least 24 hours allow these samples restore or Increase adhesiveness.

Example 10

In example 10, the test similar with example 9 is performed using four samples described in example 7；However, shelling every time After opening, bonded areas is made to be contacted with whole coffee bean, is resealed, and it is allowed to remain closed lasting 24 hours, and And it removes again.

After each peel-to-open, whole coffee bean is placed in adhesive surface and is moved in less than five minutes It removes.It reseals sample and it is allowed to be stopped 24 hours under controlled environment (that is, 72 °F and 50%RH), until it is by again Again until removing and open.Repeat this operation, until having collected total of five data point or continue 5 days when Between.These results are presented in the following table 18.

Table 18：Test is delayed in strippings in 24 hours after coffee bean pollution

Although data show that peel strength slightly reduces, peel value is in five stripping/pollutions for using whole coffee bean Still above 200gpli after cycle.

Example 11

The Rolling Ball Tack performed as described in example 4 to the film of no binding agent is tested with the viscosity with low adhesive bond agent Value is compared.These results provide in the following table 18.Rolling #3 from sample 1 makes quite anxious soon after contact membranes Turning.

Table 18：The Rolling Ball Tack for being not coated with overlay film is tested

Sample	1	2
			Roll #1	16.75	15.875
Roll #2	18	18
			Roll #3	10.875	14.25
Roll #4	17.25	18.125
			Roll #5	20.25	19.875
Roll #6	15
Average value	16.35	17.23

It it will be understood by those skilled in the art that can on the premise of without departing from the spirit and scope of the present invention, to more than Many modifications may be made for the embodiment of description, changes and combines, and this kind of modification, change and combination will be considered to fall into the present invention Design in the range of.

Claims (33)

1. a kind of sheet material roller, wherein each sheet material is configured to be folded into the packaging of reclosable, the sheet material roller includes：

In multiple flexible material sheet materials (12) of continuous winding configuration, each sheet material (12) separates and has from the sheet material roller Have：

Edge, inside face and exterior face；

The foldable portion being set in a manner of across the sheet material, the foldable portion by the sheet material be divided into the first plate and Second plate, first plate and second plate are configured to be folded relative to each other about the foldable portion；

Have in the inside face of the sheet material along the bond regions at its edge, the bond regions respectively in first plate The first bond regions part and second bond regions part opposite on second plate；

First bond regions part and second bond regions are partially configured as in first plate of the sheet material and institute Engagement when the second plate is folded about the foldable portion is stated to pack to be formed；And

Between the edge of the sheet material and the bond regions, along seal-packed each edge, described interior The opposite unsealing outer edge lid side in portion face, the opposite unsealing outer edge lid side be configured as being booked and pull open with Detach first bond regions part and second bond regions part.

2. sheet material roller according to claim 1, wherein each sheet material includes opposite end margin and opposite lateral edges, and And also include the complementary coupled component set in the inside face of the sheet material, along end margin its described, the complementation One in coupling assembly is along another edge in one of described opposite end margin and the complementary coupled component Another opposite end margin；Wherein described bond regions between the complementary coupled component and the foldable portion along Each extension in the opposite side.

3. sheet material roller according to claim 2, wherein the inside face of the sheet material being folded is described opposite Unsealing outer edge lid side is also arranged between each end margin of the sheet material and respective complementary coupled component.

4. sheet material roller according to claim 2, wherein the complementary coupled component is interlocking band.

5. sheet material roller according to claim 4, wherein the interlocking band is tightened together by using slide fastener members.

6. sheet material roller according to claim 1 is additionally included in one or more centres extended between the bond regions Bond regions, the bond regions are along the edge of the sheet material in the inside face of the sheet material.

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

8. sheet material roller according to claim 7, wherein the fold line is with being arranged on the exterior face or the inside face On label mark.

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

10. sheet material roller according to claim 1, wherein the opposite unsealing outer edge lid while including the first lid and Second lid side, and first lid while at least part be more than second lid while a part.

11. sheet material roller according to claim 1, wherein the bond regions are formed along each edge of the sheet material Boundary, the boundary is entirely around the binder free surface of the inside face of the sheet material.

12. a kind of sheet material for being configured to be folded into reclosable packages, the sheet material include：

Flexible material sheet material with edge, inside face and exterior face；

Foldable portion between said edges is set in a manner of across the sheet material, the foldable portion is by described Material is divided into the first flexible board and the second flexible board, first flexible board and second flexible board be configured to about it is described can Folded portion is folded relative to each other；

The binding material set in the sheet material inside face along the edge of first flexible board and second flexible board；

The binding material is configured as being aligned, and first flexible board in response to the sheet material and second flexibility Plate is folded together about the foldable portion and is joined together；

The binding material includes the cured pressure sensitives of UV, and the cured pressure sensitives of UV can be cured including at least one UV Acrylic acid oligomer, at least one viscosity control component and optionally at least one elastomeric material；

The adhesion component ratio (ACR) of the cured pressure sensitive adhesives of UV by formula (A) define, wherein the UV can be cured third The weight percent of olefin(e) acid oligomer controls component and optional at least one elastomeric material relative to the viscosity The summation of weight percent is 0.5 to 1.5

The ACR is effective, so that the cured fasteners based on binding agent of the UV of the reclosable have 100 grams/line Property inch (gpli) to 900gpli the first peel adhesion and respectively described between the binding agent of the engagement Up to five subsequent peel adhesions between the binding agent of the engagement of the 30% to 200% of one peel adhesion； And

Wherein described ACR and the package wall glue the sheet material inside face for forming the cured pressure sensitive adhesives of UV It is effective to close intensity, and the adhesive strength is more than first peel adhesion and described subsequent between the binding agent Peel adhesion, so as to first flexible board and second flexible board can repeatedly be peeled away it is described opposite without making Adhesive layer from the sheet material inside face delamination.

13. sheet material according to claim 12, wherein the sheet material is detachably fixed in the multiple of winding configuration Sheet material.

14. sheet material according to claim 13, wherein the multiple sheet material is wound with folded configuration.

15. sheet material according to claim 12 is additionally included in one or more centres extended between the binding agent Bond regions, the binding agent are arranged in the inside face of the sheet material along the edge of the sheet material and set.

16. sheet material according to claim 12, wherein the foldable portion is fold line.

17. sheet material according to claim 16, wherein the fold line is by advance crimping.

18. sheet material according to claim 12, wherein：

The sheet material has lateral edges and end margin；

The foldable portion is arranged in a manner of across the sheet material between the lateral edges；And

The binding material being arranged in the sheet material inside face is included along first flexible board and second flexibility The side binding material band of the lateral edges setting of plate and the end along first flexible board and the second flexible board The end binding material band of edge setting.

19. sheet material according to claim 18, wherein along described in first flexible board and second flexible board The binding material band of edge setting is spaced apart to provide binder free grip area with the edge.

20. sheet material according to claim 18, wherein the first peeling force between the end binding material band engaged Less than the first peeling force between the side binding material band of engagement.

21. sheet material according to claim 20, wherein the first peeling force of the end binding material band 100gpli with Between 200gpli；And the first peeling force of the side binding material band is between 300gpli and 900gpli.

22. sheet material according to claim 18, wherein the end binding material band and the side binding material band Corner region is scallop shape.

23. sheet material according to claim 18, wherein in the end binding material band and the side binding material band The exterior section of at least one for scallop shape, to be easier to open when the binding material band is engaged.

24. sheet material according to claim 12, wherein the binding material is with across the big of the inside face of the sheet material Partial mode is set.

25. sheet material according to claim 24, wherein the binding material is with across the entire inside face of the sheet material Mode be set.

26. sheet material according to claim 12, wherein each edge shape of the binding material along the sheet material Into boundary, the boundary is entirely around the binder free surface of the inside face of the sheet material.

27. a kind of sheet material roller, wherein each sheet material is configured to be folded into the packaging of reclosable, the sheet material roller includes：

In multiple flexible material sheet materials of continuous winding configuration, each sheet material is separated and is had from the sheet material roller：

End margin, lateral edges, inside face and exterior face；

The sheet material is divided into the first flexible board by the foldable portion set in a manner of across the sheet material, the foldable portion With the second flexible board, first flexible board and second flexible board are configured to about the foldable portion relative to that This is folded；

The complementary coupled component set in the inside face of the sheet material along its end edge, a component is along described opposite One of end margin, and complementary component is along another end margin；

The opposite adhesive strip band set in the inside face of the sheet material along each in lateral edges its described, The adhesive strip band includes being separately positioned on the first binder banded portion of first flexible board and second flexible board Divide and the second adhesive strip band part；

The foldable portion being arranged in a manner of across the sheet material between the lateral edges, the foldable portion is by described Material is divided into the first flexible board and the second flexible board, first flexible board and second flexible board be configured to about it is described can Folded portion is folded relative to each other so that the complementary coupled component and the binding agent swath alignment and sealingly engage come It is internal to form sealing；And

Between the lateral edges and the adhesive strip band and between the end margin and the coupling assembly, along institute State the seal-packed opposite unsealing outer edge of the inside face of sheet material being folded set per side with end Gai Bian, the opposite unsealing outer edge lid side are configured to be booked and pull open detach the first binder banded portion Point and the second adhesive strip band part, with detach along the lateral edges engagement adhesive strip band and along the end The coupling assembly of the engagement at edge.

28. sheet material roller according to claim 27, wherein the foldable portion is fold line.

29. sheet material roller according to claim 28, wherein the fold line is by advance crimping.

30. sheet material roller according to claim 27, wherein the coupling assembly is interlocking band.

31. sheet material roller according to claim 30, wherein the interlocking band is tightened together by using slide fastener members.

32. sheet material roller according to claim 27 is additionally included in the adhesive strip band along the lateral edges and the coupling One or more intermediate bands extended between at least one of seaming element；In wherein one or more Between adhesive strip band be configured as being aligned with the folding of the sheet material and will be divided into inside multiple sealings inside the sealing with providing Ability.

33. sheet material roller according to claim 27, wherein each end of the adhesive strip band along the sheet material Edge and each lateral edges form boundary, and the boundary is entirely around the binder free surface of the inside face.