CN1476383A - Multilayered packaging film for pouches - Google Patents
Multilayered packaging film for pouches Download PDFInfo
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- CN1476383A CN1476383A CNA018193102A CN01819310A CN1476383A CN 1476383 A CN1476383 A CN 1476383A CN A018193102 A CNA018193102 A CN A018193102A CN 01819310 A CN01819310 A CN 01819310A CN 1476383 A CN1476383 A CN 1476383A
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- film
- layer
- pouch
- density polyethylene
- interlayer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
Abstract
A low gas barrier, multi-layer film; and a medium gas barrier, multi-layer film, a high gas barrier, multi-layer film; and a relatively elastic, multi-layer film are suitable for use on a pouch-producing, vertical, form-fill-seal machine. At least the majority of the layers may be bonded together through their having been co-extruded. The outermost layer, which may be PP, can be manufactured by extrusion to form a fist sub-film which is later laminated to the other layers of the film, which have been co-extruded to form a second sub-film. Wen the second sub-film is to provide a significant barrier to gas, particularly oxygen, it can consist of a PA; PA/EVOH/PA; EVOH; PA/EVOH; PVDC; or PA/aromatic PA/PA; 1-to-3-layer core sandwiched between two EVA-, EMA-, PP-, HDPE-, LLDPE-, POP- or LDPE- based adhesive layers, sandwiched between an outermost layer of PO, polyester, PP, or PC, and an innermost sealing layer of PO, polyester, PP, or PC, and an innermost sealing layer based on Pos (mainly) polymerized using a single site catalyst system, the layers being pigmented in such a way that an effective barrier against visible light is created. The layers of the second sub-film may be doubled by collapsed bubble co-extrusion.
Description
Technical field
The present invention relates to a kind of multilayer film, especially a kind of multilayered packaging film that is used to produce pouch.
Background technology
Can be used for the production can a kind of product, common a kind of liquid product, the plastic pouch of a kind of water-containing products such as dairy products, fruit juice, flavoring or grape wine or water itself for example that vertical shaping-can-sealing machine is known.An object of the present invention is to provide and a kind ofly be particularly suitable on such machine using and be suitable for the multilayer film of protecting this packaging product to never degenerate or leak.
WO-A-97/02948 discloses a kind of film that is specially adapted to make pouch, and these pouches can be used for packing and can flow or liquid, pasty state or solid shape commodity, for example milk of pumpable, light sensitive.This film has for example five layers, wherein internal layer is carried out the light blocking function and is made the painted function of this material, and contain such as black, Chinese white, and one of superficial layer plays the sealing layer effect and do not contain pigment or contain the very Chinese white of low concentration, another superficial layer plays the printed layers effect and advantageously contains calcium carbonate, to give this layer with easy printing.Outside progressive the consisting of of a kind of five layers of example of this film contains titanium dioxide (TiO
2) low density polyethylene (LDPE) (LDPE)/contain TiO
2Polypropylene (PP)/the contain TiO of adhesives/carbon black
2Adhesives/contain calcium carbonate (CaCO
3) LDPE.Further example can omit the 4th, the 5th and/or the second layer and/or import further for example ethene one vinyl alcohol (EVOH) of layer.
JP-A-10-100346 discloses a kind of coextruded film that is applicable to food pack, it consists of one deck has polyamide (PA), polyester or acrylic polymers as a kind of composition, and another layer has the blend of a kind of alpha olefin copolymer and a kind of poly-mer that produces with the graft polymerization of unsaturated carboxylic acid or derivatives thereof.Therefore, avoided the use of one or more independent, adhesive specially layers.
EP-A-0545649 discloses a kind of multilayer polymer film, it consists of a polyolefinic core layer that contains pigment absorption, each lip-deep interlayer of this core layer, each interlayer by PO and a kind of pigment and/or a kind of pore former is formed and each outside face of these interlayers on a heat sealable polymeric outer layer.In an example, a kind of production of smooth five strata compound networks is the Noblen central core layers that contain carbon black (particle mean size is less than 0.2 μ m) by one of a seam die head co-extrusion, identical Noblen with this core layer on any side of this core layer but do not have the interlayer of carbon black, with propylene/ethylene copolymer layer on each interlayer, one of these skins contain TiO
2(particle mean size is less than 0.2 μ m).Then, resulting network carries out biaxial orientation to produce aperture therein.In another example, two interlayers each all contain TiO
2Such film has the light blocking and the low water vapour permeability of height.
Summary of the invention
According to one aspect of the present invention, provide a kind of multilayered packaging film, being intended to contact the surface direction of wanting packaged products towards this film advances, comprise an outermost layer, an interlayer, with a product contact layer, wherein one deck has a kind of material that its stiffness descends after the composition of the described product of contact at least, and this arrangement makes described product can touch described composition with described material after the described blister-pack.
Better, at least one has such material in this product contact layer and this interlayer.Advantageously, it is moisture packaged products, and this material is especially PA of the material that descends behind contact wetting of its stiffness, and this film all is the moisture permeability from its contact product surface to described material.
Because this aspect of the present invention, a kind of multilayer film can be provided, it has enough stiffness, thereby provide good machine friendly with regard to the formation-can when being pouch production via machine-sealer operation with regard to it, but, it in can obtained good hammer falling impact strength after this product.
If this outermost layer has the softening point higher than this product contact layer, then the machine friendly of this film improves with regard to its sealability.
According to another aspect of the present invention, provide a kind of multi-layer packaging pouch, direction towards the surface that this pouch contacts with the water-containing products of wherein packing advances, comprise an outermost layer, an interlayer, with a product contact layer, described outermost layer has than the higher softening point of described product contact layer, and described interlayer comprises a kind of material with hammer falling impact strength higher than described outermost material.
Because this aspect of the present invention, the sealing of this pouch with to have lower when this interlayer or compare unlikely breaking when equating hammer falling impact strength because this interlayer plays the effect of better shock absorbent.
If be ready, at least one can have the saturating character of the photoresistance higher than outermost layer in this interlayer and this product contact layer.
In order to make this film machine close friend that becomes, at least one should have the material of the stiffness higher than the stiffness of that one deck of wanting contact product in this outermost layer and this interlayer.Because this reason, this skin can comprise the bigger extrudable poly-mer of a kind of stiffness, for example the polyethylene terephthalate (PET) of polyester-especially-, PP (especially crystallization PP), polycarbonate (PC) or high density polyethylene (HDPE) (HDPE), although PP is preferably.
Be again in order to make this film machine close friend that becomes, this outermost layer and this innermost layer (being the product contact layer) should have at least 15 ℃, better at least 25 ℃ but especially at least 40 ℃ remarkable fusing point is poor when measuring with differential scanning calorimetry (DSC), make that outermost layer is not softening (certainly when innermost layer seals, it being understood that this innermost layer self heating and pressurizing sealing in pouch is shaped).The material that provides the outermost layer high softening-point can be higher, the resin that may crystallization of stiffness, and for example PET, PP, PC and HDPE are although PP is preferably.
And then in order to make this film machine close friend that becomes, this innermost layer and outermost layer better comprise anti and smooth cmpd, for example silica and mustard amic acid.
Can protect the packaging product to avoid leaking in order to make this film; above-mentioned interlayer (multilayer can be arranged) has good hammer falling impact strength; because this reason can adopt one or more the high flexibility and the unbodied resin of possibility that are polymer form.Such poly-mer is impact modified PP, comprises those that produce with the metallocene-type catalyst system, LDPE, and m-LDPE (i.e. the LDPE that makes with metallocene catalyst system) (has the low 0.88g/cm that reaches
3Density person), be under the situation of food especially at this product; For other products, also have very low density polyethylene (LDPE) (VLLDPE) of line style, especially with the ziegler-natta catalyst systems polymerization and after polymerization with the VLLDPE of maleic anhydride (MAH) grafting (being MAH-mod-VLLDPE); Polyolefin plastomers (POP), the especially POP (m-POP) that makes with metallocene catalyst system; The PA low, especially copolyamide, the particularly copolyamide of copolymerization by the polycondensation of a kind of diamines and a kind of dicarboxylic acid with the crystallinity degree.Advantageously, this innermost layer also should have good hammer falling impact strength, thus at least a being used in again in this innermost layer in such poly-mer.
Can protect the packaging product to avoid worsening and leaking in order to make this film; by using one or more that high performance resin of very low-level short molecule magnitude branch and ultra low levels unconverted monomer is arranged; in innermost layer, can obtain excellent sealing performance (especially good hot sticky performance); even also like this to far-ranging liquid product, and bringing out property of taste is low.Such resin can be the polyolefin of low softening point, deflection.Spendable have among LDPE, m-LLDPE and the m-POP one or more.
Be again in order to make this film can protect the packaging product to avoid worsening, at least one can constitute the gas barrier to visible light in this interlayer and this innermost layer.Advantageously, at least one barrier layer be dark, better be black, and at least another barrier layer be light, better be white.Particularly advantageously be, interior light shield layer and outermost light shield layer all be light, better be white, and in the middle of at least one light shield layer be dark, better be black.Like this, just might obtain in fact 100% (at least 99.9%) protection of visible light is also obtained aesthetic pleasant outward appearance simultaneously.By such as with carbon black and TiO
2Pigment to suitable layer adds, and just can obtain these light shield layers.
Therefore,, provide a kind of multilayer film, comprise according to another aspect of the present invention:
Ground floor, comprise in one group that forms by PET, PP, PC and HDPE any,
The second layer comprises a kind of sealing layer,
Between the described ground floor and the described second layer the 3rd layer and the 4th layer, wherein the 3rd layer is more approached described ground floor than described the 4th layer,
Light pigment in described the 3rd layer,
Dark pigment in described the 4th layer and
Light pigment in the described film in described dark pigment and described film between that farther surface of described ground floor.
The sealing poly-mer better is to produce with a kind of metalloscene catalyst.
Because this aspect of the present invention, and because the fusing point between the ground floor and the second layer is poor, good sealing intensity especially can or stain by product to be realized, thereby can obtain a kind of film that constitutes good light shield layer and be particularly suitable for using on pouch shaping-can-sealer.
According to a further aspect of the present invention, provide and a kind ofly produce a kind of method of layered product by rolling over flat vesicle extrusion, comprise a kind of multilayer pipe that comprises the shading material of extrusion molding, make this pipe folding, and make innermost layer self heat lamination of this pipe.
According to another further aspect of the present invention, provide a kind of layered product of rolling over flat multilayer pipe form that is, this multilayer pipe comprises a kind of blind, and wherein innermost layer is in the state of self heat lamination.
Because these two aspects of the present invention, can obtain a kind of layered product, for the shading material of same ratio, this layered product is a kind of than with the layered product of usual inflation film system production light shield layer more efficiently.We believe that this is because this shading material is shared in two flat beds, rather than in a single flat bed.And then, to compare with the film of producing with usual inflation film system, it is easier avoids making this shading material to appear on the surface of relative thin layered product.And then the characteristic of rolling over flat vesicle extrusion is to make folding film bubble to pass through between hot nip rolls, thereby the effect of the thickness uniformization that makes this layered product is not only arranged, and the effect of being evenly distributed that makes this shading material is arranged.
After this layered product production, can make one section of this layered product by make this section to edge regions merge and be sealed give this section with a kind of tubular form, the lower end of this tubular segments is sealed, in this tubular segments a kind of product of can, to make the upper end of this tubular segments be sealed to form shape then be a kind of container.If this layered product is form of film, then can produce a kind of pouch in this way.
When a kind of gas barrier lamination of needs body, can further comprise one or more interlayers that gas barrier character is arranged.This gas barrier advantageously can effectively stop oxygen, carbon dioxide gas and nitrogen, especially oxygen sees through.This gas barrier is by aluminium (Al), aluminium oxide (Al
2Ox), for example EVOH, polyvinyl alcohol (PVOH), polyvinylidene chloride (PVDC) or PA provide for monox (SiOx), melamine, class diamond carbon or one or more poly-mers.
For this film can be not relatively expensively be produced, what advantageously make these layers most ofly at least bonds together (rather than it as film laminating separately together) by its co-extrusion that has carried out.Such co-extrusion can be (passing through seam die head) curtain coating or inflation co-extrusion.If be ready, the outermost layer that can be PP can be made by curtain coating extrusion molding (it is a simple layer in this case) or co-extrusion (it is made up of multilayer in this case), form a kind of first inferior film, be laminated to after a while this film already advantageously co-extrusion and form a kind of second inferior film other the layer on.In order to promote the bonding to the second inferior film, this outermost inside face can be such as suitably handling by bunch discharge or by using one or more priming paint before lamination.If be ready, the inside face of this processing can print art pattern before lamination.When the second inferior film will provide remarkable gas barrier to gas especially oxygen, it can be made of a kind of curtain coating or inflation coextrusion process, and consist of PA, PA/EVOH/PA, EVOH, PA/EVOH, PVDC, or 1～3 layer of core of PA/ aromatic PA/PA, press from both sides two outward based on ethane-acetic acid ethyenyl ester (EVA), ethylene-methyl methacrylate (EMA), PP, HDPE, linear low density polyethylene (LLDPE) (LLDPE), the adhesive phase of POP or LDPE, an outer folder polyolefin (PO) (for example polythene PE), polyester (for example PET), PP, or the outermost layer of PC and one is based on (mainly) the inner sealant layer with the PO of single site catalyst systems polymerization, and these layers all add pigment so that can produce a kind of like this mode of a kind of effective gas barrier to visible light.
If this film will become resilient relatively at least on its outer surface, then its outermost layer can comprise a kind of plastics of modified rubber.Yet this film must have its outside face, and to be higher than the big relatively fusing point of its inside face poor, and in this case, the plastics of this modified rubber need high relatively fusing point.Such plastics can be PP, PET, HDPE or PC.In these cases, this film can need not any lamination by co-extrusion production.
For can be clearly and intactly openly the present invention, to describe its four embodiment now with reference to the accompanying drawings, wherein, Fig. 1～4 are respectively diagrams, segment, the low gas barrier multilayer film of cross-sectional plane, middle gas barrier multilayer film, high gas barrier multilayer film, multilayer film with relative resilient, all be suitable for to produce pouch at one, use on vertical shaping-can-sealer, and Fig. 5～7 illustrate low gas barrier multilayer film respectively with segment cross-sectional illustration ground, middle gas barrier multilayer film, manufacturing with the inferior film of high gas barrier multilayer film.
With reference to accompanying drawing, the film of Fig. 1 is made up of layer 2～8, and the film of Fig. 2 is made up of layer 10～20, and the film of Fig. 3 is made up of layer 22～36.The main composition of each layer, scope, thickness and main performance preferably that may thickness in following table I～IV, have been provided.
In Fig. 1～3 in the manufacturing of the film of each, outermost layer 2,10, or 22, may occur as actual conditions, it is the inferior film by a kind of stiffening of curtain coating extrusion molding production formation, and other layer 4～8,12～20, or 24～36th, produce and form the second inferior film with inflation or curtain coating co-extrusion method, the latter the tackified finish of this stiffening film inside face and should the surface on after the aniline printing of art pattern and/or the printing of gravure runner with a kind of suitable adhesive 3,11, or 23 be laminated on the inferior film of this stiffening, and the respectively film of this figure is provided.This adhesives can be for example polyurethane (PUR), EMA or a kind of iolon.
In the manufacturing of the film of Fig. 4, layer 38～46th is produced with inflation or curtain coating co-extrusion method.
With reference to Fig. 5, this shows the manufacturing of the second inferior film with the flat film bubble of folding system, wherein, with blown tube 50 folding sending between a pair of hot nip rolls (not shown), make pipe 50 innermost layer self heat lamination, produce and be suitable for to produce the inferior film 52 of multilayer that uses on pouch, the vertical shaping-can-sealer at one.Pipe 50 is followed successively by the sealing layer 54 of LDPE, m-LDPE or m-POP to the composition of inboard from its outside, the interlayer 56 of PE and fusing point are not higher than the innermost layer 58 of about 160 ℃ POP, EVA, EMA, ethylene-acrylic acid (EAA), a kind of iolon or a kind of polyamide copolymer.Therefore, be intended to a kind of suitable adhesive be laminated on the first inferior film of PP, PET, PC or HDPE inferior film 52 by be the form of doubling 54 '～58 ' those layers 54～58 form.
With reference to Fig. 6, this has shown the manufacturing of this second inferior film with the flat film bubble of folding system, wherein, with blown tube 60 folding sending between a pair of hot nip rolls (not shown), make pipe 60 innermost layer self heat lamination, produce and be suitable for to produce the inferior film 62 of multilayer that uses on pouch, the vertical shaping-can-sealer at one.Pipe 60 is followed successively by the sealing layer 64 of LDPE, m-LDPE or m-POP to the composition of inboard from its outside, the binding course 66 of MAH-mod-VLLDPE or LDPE, the interlayer 68 of PA, the binding course 70 of MAH-mod-VLLDPE or LDPE and fusing point are not higher than the innermost layer 72 of about 160 ℃ POP, EVA, EMA, EAA, a kind of iolon or a kind of polyamide copolymer.Therefore, be intended to a kind of suitable adhesive be laminated on the first inferior film of PP, PET, PC or HDPE inferior film 62 by be the form of doubling 64 '～72 ' those layers 64～72 form.
With reference to Fig. 7, this has shown the manufacturing of this second inferior film with the flat film bubble of folding system, wherein, with blown tube 80 folding sending between a pair of hot nip rolls (not shown), make pipe 80 innermost layer self heat lamination, produce and be suitable for to produce the inferior film 82 of multilayer that uses on pouch, the vertical shaping-can-sealer at one.Pipe 80 is followed successively by the sealing layer 84 of LDPE, m-LDPE or m-POP to the composition of inboard from its outside, the binding course 86 of MAH-mod-VLLDPE or LDPE, the interlayer 88 of PA, the gas barrier 90 of EVOH, PVOH or PVDC, another interlayer 92 of PA, the binding course 94 of MAH-mod-VLLDPE or LDPE and fusing point are not higher than the innermost layer 96 of about 160 ℃ POP, EVA, EMA, EAA, a kind of iolon or a kind of polyamide copolymer.Therefore, be intended to a kind of suitable adhesive be laminated on the first inferior film of PP, PET, PC or HDPE inferior film 82 by be the form of doubling 84 '～96 ' those layers 84～96 form.
We believe, each layer doubles in Fig. 5～7, compare with the non-same overall thickness that doubles each layer composition in the layered product, the effect that the desired performance that improves this layered product is arranged comprises Chinese white and manages when comprising black pigment in one or more internal layers of 50,60 or 80 its shading performance especially true in for example managing one or more skins of 50,60 or 80.
Although any one film all can be used for packing various products among these figure, especially for example milk, fruit juice, flavoring, grape wine or water of liquid product, but its concrete purpose is a milk pack, and why Here it is uses Chinese white to come to the inboard of this film and the outside with one of reason of white colour.This film also is specially adapted to packing aseptic or sterilization, and for this reason, it constructs to such an extent that can tackle high-pressure water vapor and the hydrogen peroxide that is used for keeping aseptic or sterilization wrap condition.The inboard of this film and the outside all should tolerate 60 ℃ 35% superoxol at least 72 hours.After the liquid, aqueous food product of can 12～24 hours, this film should demonstrate the anti-drop impact performance (according to USSt test method D 1709-1, method B) that this film is measured substantive the increase.
When packing milk and other water-containing products, Fig. 2,3,4,6 or 7 film have the wall advantage that stiffness reduces after this product of can from the pouch of its formation, therefore, this film is not only the machine close friend, and also becomes after a while and have more anti-drop impact performance.
Any one film is not expensive among these figure, is using high-pressure water vapor and hydrogen peroxide to keep aseptic shaping-can-sealer (ELOPOUCH of making of RobertBosch company especially of aseptic packaging condition
TMThe aseptic vertical machine of E-P4000, also can be available from Elopak group company) on high machine friendly is arranged, for example milk, fruit juice, water and flavoring have excellent heat seal performance and pressure sealing performance and do not have in this product respectively or extremely low peculiar smell brings out to far-ranging liquid product, excellent recirculation performance is arranged, and can be used for producing visible light is had 100% gas barrier in fact, high impact is arranged and the pouch of effective gas barrier of pair oxygen, carbon dioxide and nitrogen is arranged concerning Fig. 2,3,4,6 or 7 film.
Table I
| Level number | Main component | Thickness range (micron) * | Better thickness (micron) | Main performance |
| Low gas barrier film | ||||
| ????2 | PP; Anti and slip cmpd | ??15～60 | ????30 | High softening-point; Machine friendly (stiffness) |
| ????4 | M-LLDPE; LDPE; Chinese white | ??15～60 | ????30 | The light gas barrier; Hammer falling impact strength |
| ????6 | Impact modified PP; Black pigment | ??10～40 | ????20 | Hammer falling impact strength; The light gas barrier |
| ????8 | M-LLDPE; M-POP; LDPE; Chinese white; Anti and slip cmpd | ??15～60 | ????30 | Hammer falling impact strength; Low softening point; The light gas barrier; Sealability |
Table II
| Level number | Main component | Thickness range (micron) * | Better thickness (micron) | Main performance |
| Middle gas barrier film | ||||
| ????10 | PP; Anti and slip cmpd | ??15～60 | ????30 | High softening-point; Machine friendly (stiffness) |
| ????12 | M-LLDPE; LDPE; Chinese white | ??15～60 | ????30 | The light gas barrier; Hammer falling impact strength |
| ????14 | MAH-mod-VLLDPE; LDPE; Black pigment | ??2～10 | ????5 | The light gas barrier; Hammer falling impact strength |
| ????16 | PA | ??3～20 | ????10 | Hammer falling impact strength; Oxygen gas barrier; Stiffness |
| ????18 | MAH-mod-VLLDPE; LDPE; Black pigment | ??2～10 | ????5 | The light gas barrier; Hammer falling impact strength |
| ????20 | M-LLDPE; M-POP; LDPE; Chinese white; Anti and slip cmpd | ??15～60 | ????30 | Hammer falling impact strength; Low softening point; The light gas barrier; Sealability |
Table III
| Level number | Main component | Thickness range (micron) * | Better thickness (micron) | Main performance |
| High gas barrier film | ||||
| ????22 | PP; Anti and slip cmpd | ??7～30 | ????15 | High softening-point; Machine friendly (stiffness) |
| ????24 | M-LLDPE; M-POP; LDPE; Chinese white | ??20～80 | ????40 | The light gas barrier; Hammer falling impact strength |
| ????26 | MAH-mod-VLLDPE; LDPE; Black pigment | ??2～10 | ????5 | The light gas barrier; Hammer falling impact strength |
| ????28 | PA | ??2～10 | ????5 | Hammer falling impact strength; Oxygen gas barrier; Stiffness |
| ????30 | EVOH | ??2～10 | ????5 | Oxygen gas barrier |
| ????32 | PA | ??2～10 | ????5 | Hammer falling impact strength; Oxygen gas barrier; Stiffness |
| ????34 | MAH-mod-VLLDPE; LDPE; Black pigment | ??2～10 | ????5 | The light gas barrier; Hammer falling impact strength |
| ????36 | M-LLDPE; M-POP; LDPE; Chinese white; Anti and slip cmpd | ??20～80 | ????40 | Hammer falling impact strength; Low softening point; The light gas barrier; Sealability |
Table IV
| Level number | Main component | Thickness range (micron) * | Better thickness (micron) | Main performance |
| The relative resilient film | ||||
| ????38 | Modified rubber PP; Chinese white; Anti and slip cmpd | ??25～100 | ????50 | The light gas barrier; Elasticity; High softening-point |
| ????40 | MAH-mod-POP; LDPE; Black pigment | ??2～10 | ????5 | The light gas barrier; Hammer falling impact strength |
| ????42 | PA | ??3～20 | ????10 | Hammer falling impact strength; Oxygen gas barrier; Stiffness |
| ????44 | MAH-mod-POP; LDPE; Black pigment | ??2～10 | ????5 | The light gas barrier; Hammer falling impact strength |
| ????46 | M-LLDPE; LDPE; Chinese white; Anti and slip cmpd | ??35～140 | ????70 | Hammer falling impact strength; Low softening point; The light gas barrier; Sealability |
Claims (96)
1. multilayered packaging film, want the direction on the surface of packaged products to advance towards this film intention contact, comprise an outermost layer, an interlayer and a product contact layer, one deck material of having a kind of its stiffness to descend after the composition of the described product of contact at least wherein, this arrangement makes described material to be packaged at described product touch described composition afterwards in the described film.
2. according to the film of claim 1, wherein, in this product contact layer and this interlayer at least one deck state material to some extent.
3. according to the film of claim 1 or 2, wherein, described material be a kind of its stiffness with the material that descends after moisture contacts, and this film is that moisture is permeable from its product mating surfaces to described material.
4. according to the film of claim 3, wherein, described material is a polyamide.
5. according to the film of above any one claim, wherein, in this outermost layer and this interlayer at least one deck energetically spend the material higher than product contact layer.
6. according to the film of claim 5, wherein, the higher material of described stiffness ratio product contact layer comprises the big extrudable poly-mer of a kind of stiffness.
7. according to the film of claim 6, wherein, the higher material of described stiffness ratio product contact layer comprises polyester, polypropylene, polycarbonate or high density polyethylene (HDPE).
8. according to the film of claim 7, wherein, described polyester comprises polyethylene terephthalate.
9. according to the film of claim 7 or 8, wherein, described polypropylene comprises crystalline polypropylene.
10. according to the film of above any one claim, wherein, this outermost layer has the softening point higher than this product contact layer.
11. according to the film of claim 10, wherein, this outermost layer and this product contact layer have at least 15 ℃ fusing point poor.
12. according to the film of claim 11, wherein, described difference is at least 25 ℃.
13. according to the film of claim 12, wherein, described difference is at least 40 ℃.
14. according to any one film in the claim 5～13, wherein, this outermost layer comprises polyethylene terephthalate, polypropylene, polycarbonate or high density polyethylene (HDPE).
15. according to the film of above any one claim, wherein, this product contact layer and outermost layer comprise anti and slip cmpd.
16. according to the film of claim 15, wherein, described cmpd comprises silica and mustard amic acid.
17. according to the film of above any one claim, wherein, in described interlayer and the described product contact layer at least one deck comprise at least a high flexibility poly-mer.
18. according to the film of claim 17, wherein, described high flexibility poly-mer comprises impact modified polypropylene, low density polyethylene (LDPE), low density polyethylene (LDPE) with metallocene catalyst system production, very lower density, linear low density polyethylene (LLDPE), polyolefin plastomers, or low-crystallinity polyamide.
19. according to the film of claim 18, wherein, described impact modified polypropylene is produced with a kind of metallocene-type catalyst system.
20. according to the film of claim 18 or 19, wherein, described very lower density, linear low density polyethylene (LLDPE) be with a kind of ziegler natta catalyst polymerization-filling, and use maleic anhydride graft after polymerization.
21. according to claim 18,19 or 20 film, wherein, described polyolefin plastomers is produced with a kind of metallocene catalyst system.
22. according to any one film in the described claim 18～20, wherein, described low-crystallinity polyamide is a kind of copolyamide.
23. according to the film of claim 22, wherein, described copolyamide is copolymerization by the polycondensation of a kind of diamines and a kind of dicarboxylic acid.
24. according to the film of above any one claim, wherein, described product contact layer comprises at least a high performance resin that very low-level short molecule magnitude branch and ultra low levels unconverted monomer are arranged.
25. according to the film of claim 24, wherein, described at least a high performance resin comprises the flexibility polyolefin of low softening point.
26. film according to claim 25, wherein, the flexibility polyolefin of described low softening point comprises following at least a: low density polyethylene (LDPE), the linear low density polyethylene (LLDPE) of producing with a kind of metallocene catalyst system and with a kind of polyolefin plastomers of metallocene catalyst system production.
27. according to the film of above any one claim, wherein, in this interlayer and this product contact layer at least one deck the light gas barrier properties higher than outermost layer are arranged.
28., comprise the interior light barrier layer and the outermost light barrier layer of light color, and at least one dark intermediate rays barrier layer according to the film of claim 27.
29. according to the film of above any one claim, be a kind of form of at least one section of rolling over flat multilayer pipe, the innermost layer of this pipe is in the situation of self heat lamination.
30. according to the film of claim 29, wherein, described innermost layer comprises fusing point and is not higher than about 160 ℃ polyolefin plastomers, ethane-acetic acid ethyenyl ester, ethylene-methyl methacrylate, ethylene-acrylic acid, iolon or polyamide copolymer.
31., further comprise the interlayer that at least one further has gas barrier properties according to the film of above any one claim.
32. according to the film of claim 31, wherein, described at least one further interlayer comprises in aluminium, aluminium oxide, monox, melamine, diamond sample carbon and the poly-mer at least a.
33. according to the film of above any one claim, wherein, this interlayer and product contact layer are co-extrusions at least.
34. according to the film of claim 33, wherein, this outermost layer is made by extrusion molding, and forms a kind of first inferior film that will be laminated on all the other each layers of this film that are the second inferior form of film.
35. according to the film of above any one claim, wherein, described outermost layer comprises a kind of rubber-modified plastics.
36. multi-layer packaging pouch, towards the wherein direction propelling on the surface of the water-containing products of packing of this pouch contact, comprise an outermost layer, an interlayer and a product contact layer, described outermost layer has the softening point than described product contact floor height, and described interlayer comprises a kind of its hammer falling impact strength than the high material of described outermost material.
37. according to the pouch of claim 36, wherein, described interlayer comprises at least a high flexibility poly-mer.
38. according to the pouch of claim 37, wherein, described high flexibility poly-mer comprises impact modified polypropylene, low density polyethylene (LDPE), low density polyethylene (LDPE) with metallocene catalyst system production, very lower density, linear low density polyethylene (LLDPE), polyolefin plastomers, or low-crystallinity polyamide.
39. according to the pouch of claim 38, wherein, described polypropylene is produced with a kind of metallocene-type catalyst system.
40. according to the pouch of claim 38 or 39, wherein, described very lower density, linear low density polyethylene (LLDPE) be with a kind of ziegler natta catalyst polymerization-filling, and use maleic anhydride graft after polymerization.
41. according to claim 38,39 or 40 pouch, wherein, described polyolefin plastomers is produced with a kind of metallocene catalyst system.
42. according to any one pouch in the claim 38～41, wherein, described low-crystallinity polyamide is a kind of copolyamide.
43. according to the pouch of claim 42, wherein, described copolyamide is copolymerization by the polycondensation of a kind of diamines and a kind of dicarboxylic acid.
44. according to any one pouch in the claim 36～43, wherein, in this outermost layer and this interlayer at least one deck energetically spend the material higher than product contact layer.
45. according to the pouch of claim 44, wherein, the higher material of described stiffness ratio product contact layer comprises the big extrudable poly-mer of a kind of stiffness.
46. according to the pouch of claim 45, wherein, the higher material of described stiffness ratio product contact layer comprises polyester, polypropylene, polycarbonate or high density polyethylene (HDPE).
47. according to the pouch of claim 46, wherein, described polyester comprises polyethylene terephthalate.
48. according to the pouch of claim 46 or 47, wherein, described polypropylene comprises crystalline polypropylene.
49. according to any one pouch in the claim 36～48, wherein, this outermost layer has the softening point higher than this product contact layer.
50. according to the pouch of claim 49, wherein, this outermost layer and this product contact layer have at least 15 ℃ fusing point poor.
51. according to the pouch of claim 50, wherein, described difference is at least 25 ℃.
52. according to the pouch of claim 51, wherein, described difference is at least 40 ℃.
53. according to any one pouch in the claim 44～52, wherein, this outermost layer comprises polyethylene terephthalate, polypropylene, polycarbonate or high density polyethylene (HDPE).
54. according to any one pouch in the claim 36～53, wherein, this product contact layer and outermost layer comprise anti and slip cmpd.
55. according to the pouch of claim 54, wherein, described cmpd comprises silica and mustard amic acid.
56. according to any one pouch in the claim 36～55, wherein, described product contact layer comprises at least aly has very low-level short molecule magnitude to divide and the high performance resin of ultra low levels unconverted monomer.
57. according to the pouch of the appended claim 56 of claim 49, wherein, described at least a high performance resin comprises the flexibility polyolefin of low softening point.
58. pouch according to claim 57, wherein, the flexibility polyolefin of described low softening point comprises following at least a: low density polyethylene (LDPE), the linear low density polyethylene (LLDPE) of producing with a kind of metallocene catalyst system and with a kind of polyolefin plastomers of metallocene catalyst system production.
59. according to any one pouch in the claim 36～58, wherein, this product contact layer has the light gas barrier properties higher than this outermost layer.
60. according to the pouch of claim 59, wherein, the wall of described pouch contains the innermost layer and the outermost layer of light color, and at least one dark intermediate rays barrier layer.
61. according to any one pouch in the claim 36～60, its wall is a kind of form of at least one section of rolling over flat multilayer pipe, and its innermost layer is the situation of self heat lamination.
62. according to the pouch of claim 61, wherein, described innermost layer comprises fusing point and is not higher than about 160 ℃ polyolefin plastomers, ethane-acetic acid ethyenyl ester, ethylene-methyl methacrylate, ethylene-acrylic acid, iolon or polyamide copolymer.
63., further comprise the interlayer that at least one further has gas barrier properties according to any one pouch in the claim 36～61.
64. according to the pouch of claim 63, wherein, described at least one further interlayer comprises in aluminium, aluminium oxide, monox, melamine, diamond sample carbon and the poly-mer at least a.
65. according to any one pouch in the claim 36～64, wherein, this interlayer and product contact layer are co-extrusions at least.
66. according to the pouch of claim 65, wherein, this outermost layer is made by extrusion molding, and forms a kind of first inferior film that will be laminated on all the other each layers of this film that are the second inferior form of film.
67. according to the pouch of above any one claim, wherein, described outermost layer comprises a kind of rubber-modified plastics.
68. multilayer film comprise:
Ground floor comprises any in one group that is made up of PET, PP, PC and HDPE,
The second layer comprises a kind of sealed polymer,
Between the described ground floor and the described second layer the 3rd layer and the 4th layer, wherein the 3rd layer is more approached described ground floor than described the 4th layer,
Light pigment in described the 3rd layer,
Dark pigment in described the 4th layer and
Light pigment in the described film in described dark pigment and described film between that farther surface of described ground floor.
69. according to the film of claim 68, the sealing poly-mer is produced with a kind of metalloscene catalyst.
70. according to the film of claim 68 or 69, wherein, the fusing point difference of the ground floor and the second layer is at least 15 ℃.
71. according to the film of claim 70, wherein said difference is at least 25 ℃.
72. according to the film of claim 71, wherein said difference is at least 40 ℃.
73. according to any one film in the claim 68～72, wherein, ground floor comprises polyethylene terephthalate, polypropylene, polycarbonate or high density polyethylene (HDPE).
74. according to any one film in the claim 68～73, wherein, the ground floor and the second layer comprise anti and slip cmpd.
75. according to the film of claim 74, wherein, described cmpd comprises silica and mustard amic acid.
76. according to any one film in the claim 68～75, wherein, in the ground floor, the 3rd layer and the 4th layer at least one deck energetically spend material than second floor height.
77. according to the film of claim 76, wherein, the material of described stiffness ratio second floor height comprises the bigger extrudable poly-mer of a kind of stiffness.
78. according to the film of claim 77, wherein, the material of described stiffness ratio second floor height comprises polyester, polypropylene, polycarbonate or high density polyethylene (HDPE).
79. according to the film of claim 78, wherein, described polyester comprises polyethylene terephthalate.
80. according to the film of claim 78 or 79, wherein, described polypropylene comprises crystalline polypropylene.
81. according to any one film in the claim 68～80, wherein, the described second layer comprises at least aly has very low-level short molecule magnitude to divide and the high performance resin of ultra low levels unconverted monomer.
82. according to the film of claim 81, wherein, described at least a high performance resin comprises the deflection polyolefin of low softening point.
83. film according to claim 82, wherein, the deflection polyolefin of described low softening point comprises following at least a: low density polyethylene (LDPE), and with a kind of linear low density polyethylene (LLDPE) of metallocene catalyst system production and the polyolefin plastomers of producing with a kind of metallocene catalyst system.
84. according to any one film in the claim 68～83, be a kind of form of at least one section of rolling over flat multilayer pipe, and its innermost layer is in the situation of self heat lamination.
85. according to the film of claim 84, wherein, described innermost layer comprises fusing point and is not higher than about 160 ℃ polyolefin plastomers, ethane-acetic acid ethyenyl ester, ethylene-methyl methacrylate, ethylene-acrylic acid, iolon or polyamide copolymer.
86. according to any one film in the claim 68～84, wherein, in described the 3rd layer and the 4th layer at least one deck gas barrier properties is arranged.
87. according to the film of claim 86, wherein, the described one deck at least in described the 3rd layer and the 4th layer comprises in aluminium, aluminium oxide, monox, melamine, diamond sample carbon and the poly-mer at least a.
88. according to the film of above any one claim, wherein, the second layer, the 3rd layer and the 4th layer are co-extrusions at least.
89. according to the film of claim 88, wherein, ground floor is made by extrusion molding, and forms the first inferior film that will be laminated on all the other each layers of this film that are the second inferior form of film.
90. according to any one film in the claim 68～89, wherein, described ground floor comprises a kind of rubber-modified plastics.
91. produce a kind of method of layered product by rolling over flat vesicle extrusion, comprise a kind of multilayer pipe that comprises light gas barrier material of extrusion molding, should manage folding, and with innermost layer self heat lamination of this pipe.
92., make one section of described layered product to be configured as a kind of container subsequently according to the method for claim 91.
93. method according to claim 92, wherein, the described shaping of that of described layered product section comprise with described section to the edge regions overlap joint and be sealed, make described section to be a kind of tubular form, lower end sealing with this tubular form section, a kind of product of can in this tubular form section, the upper end with this tubular form section seals then.
94. according to the method for claim 92 or 93, wherein, described container is a kind of pouch.
95. be the layered product of rolling over flat multilayer pipe form, this multilayer pipe comprises a kind of light gas barrier material, and its innermost layer is in a kind of situation of self heat lamination.
96. according to the layered product of claim 95, wherein, described innermost layer comprises fusing point and is not higher than about 160 ℃ polyolefin plastomers, ethane-acetic acid ethyenyl ester, ethylene-methyl methacrylate, ethylene-acrylic acid, iolon or polyamide copolymer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0023548.1 | 2000-09-26 | ||
| GBGB0023548.1A GB0023548D0 (en) | 2000-09-26 | 2000-09-26 | A film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1476383A true CN1476383A (en) | 2004-02-18 |
Family
ID=9900140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA018193102A Pending CN1476383A (en) | 2000-09-26 | 2001-09-26 | Multilayered packaging film for pouches |
Country Status (6)
| Country | Link |
|---|---|
| CN (1) | CN1476383A (en) |
| AP (1) | AP2003002788A0 (en) |
| AU (1) | AU2001290173A1 (en) |
| GB (1) | GB0023548D0 (en) |
| WO (1) | WO2002026494A2 (en) |
| ZA (1) | ZA200303259B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101065240B (en) * | 2005-09-27 | 2011-12-14 | 凸版印刷株式会社 | Gas barrier laminated film |
| CN104999753A (en) * | 2015-05-22 | 2015-10-28 | 苏州天加新材料股份有限公司 | High-barrier multi-layer coextrusion packaging film |
| CN105269909A (en) * | 2014-07-25 | 2016-01-27 | 天津亨和塑机科技有限公司 | Ripple-eliminating packaging film |
| CN105269912A (en) * | 2014-07-25 | 2016-01-27 | 天津亨和塑机科技有限公司 | Frozen fresh meat film packaging bag |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10227580A1 (en) * | 2002-06-20 | 2004-01-08 | Kuhne Anlagenbau Gmbh | Multi-layer, flat or tubular food casing or film |
| DE10254172B4 (en) * | 2002-11-20 | 2005-07-21 | Kuhne Anlagenbau Gmbh | Multilayered, surface or tubular food casing or film |
| SE527944C2 (en) * | 2004-05-10 | 2006-07-18 | Tetra Laval Holdings & Finance | Packaging laminate in plastic and with gas barrier, packaging container and method for producing the packaging laminate |
| US7476428B2 (en) | 2004-05-12 | 2009-01-13 | Tetra—Laval Holdings & Finance S.A. | Plastic gas barrier packaging laminate |
| WO2009101158A1 (en) * | 2008-02-15 | 2009-08-20 | Elopak Systems Ag | Improvements in or relating to laminate structures |
| US8574694B2 (en) | 2009-11-03 | 2013-11-05 | Curwood, Inc. | Packaging sheet with improved cutting properties |
| US11292234B2 (en) | 2012-09-13 | 2022-04-05 | Dow Global Technologies Llc | Polyolefin based films suitable for thermoforming |
| CN104837620A (en) * | 2012-12-07 | 2015-08-12 | 比密斯公司 | Multilayer film |
| US9211987B2 (en) * | 2013-02-20 | 2015-12-15 | Dow Global Technologies Llc | Flexible pouch and dock system |
| US20150225151A1 (en) | 2014-02-11 | 2015-08-13 | Christopher L. Osborn | Anti-Scalping Transdermal Patch Packaging Film |
| US9468584B2 (en) | 2014-04-02 | 2016-10-18 | Bemis Company, Inc. | Child-resistant packaging |
| CN105415829B (en) * | 2015-10-19 | 2018-07-20 | 黄山永新股份有限公司 | A kind of openable cover polyethylene film, the high-barrier openable cover film and preparation method thereof comprising the film |
| CN106273957B (en) * | 2016-08-03 | 2019-02-01 | 湖北恒泰橡塑有限公司 | A kind of peritoneal dialysis liquid bag co-extrusion film and preparation method thereof |
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|---|---|---|---|---|
| US4440824A (en) * | 1981-10-23 | 1984-04-03 | Composite Container Corporation | Thermoformable coextruded multilayered structure |
| US4911963A (en) * | 1987-08-31 | 1990-03-27 | Viskase Corporation | Multilayer film containing amorphous nylon |
| CA2113627A1 (en) * | 1991-07-18 | 1993-02-18 | Prasadarao Meka | Heat sealed article |
| GB9125643D0 (en) * | 1991-12-03 | 1992-01-29 | Courtaulds Films & Packaging | Polymeric films |
| WO1997002948A1 (en) * | 1995-07-07 | 1997-01-30 | Tetra Laval Holdings & Finance S.A. | Multilayer film material and pouches made from the material |
| US5911665A (en) * | 1996-04-03 | 1999-06-15 | Tetra Laval Holdings & Finance Sa | Fatigue crack resistant liquid packaging pouch |
| JP3732283B2 (en) * | 1996-09-26 | 2006-01-05 | 三菱化学株式会社 | Coextruded film and food packaging bag |
| EP0998388B9 (en) * | 1997-02-11 | 2007-10-03 | Dow Global Technologies Inc. | Pouches for packaging flowable materials |
| FR2793724B1 (en) * | 1999-05-21 | 2001-06-29 | Soplaril Sa | MULTILAYER STRUCTURE WHICH MAY BE OBTAINED BY CLOSING THE COEXTRUSION BUBBLE |
-
2000
- 2000-09-26 GB GBGB0023548.1A patent/GB0023548D0/en not_active Ceased
-
2001
- 2001-09-26 WO PCT/IB2001/001763 patent/WO2002026494A2/en active Application Filing
- 2001-09-26 AP APAP/P/2003/002788A patent/AP2003002788A0/en unknown
- 2001-09-26 AU AU2001290173A patent/AU2001290173A1/en not_active Abandoned
- 2001-09-26 CN CNA018193102A patent/CN1476383A/en active Pending
-
2003
- 2003-04-25 ZA ZA200303259A patent/ZA200303259B/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101065240B (en) * | 2005-09-27 | 2011-12-14 | 凸版印刷株式会社 | Gas barrier laminated film |
| CN105269909A (en) * | 2014-07-25 | 2016-01-27 | 天津亨和塑机科技有限公司 | Ripple-eliminating packaging film |
| CN105269912A (en) * | 2014-07-25 | 2016-01-27 | 天津亨和塑机科技有限公司 | Frozen fresh meat film packaging bag |
| CN104999753A (en) * | 2015-05-22 | 2015-10-28 | 苏州天加新材料股份有限公司 | High-barrier multi-layer coextrusion packaging film |
Also Published As
| Publication number | Publication date |
|---|---|
| AP2003002788A0 (en) | 2003-06-30 |
| WO2002026494A2 (en) | 2002-04-04 |
| GB0023548D0 (en) | 2000-11-08 |
| WO2002026494A3 (en) | 2002-08-22 |
| ZA200303259B (en) | 2004-07-26 |
| AU2001290173A1 (en) | 2002-04-08 |
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