CN207931231U - Stretch-proof composite membrane - Google Patents
Stretch-proof composite membrane Download PDFInfo
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- CN207931231U CN207931231U CN201721854230.XU CN201721854230U CN207931231U CN 207931231 U CN207931231 U CN 207931231U CN 201721854230 U CN201721854230 U CN 201721854230U CN 207931231 U CN207931231 U CN 207931231U
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- surface layer
- stretch
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Abstract
The utility model is related to acceptable packaging material fields, more particularly to a kind of stretch-proof composite membrane, including surface layer and hot sealing layer, it is bonded by adhesive layer between surface layer and hot sealing layer, surface layer is polyester film, and thickness range is 0.012~0.018mm, hot sealing layer is ethylene-vinyl alcohol copolymer film, its thickness range is 0.030~0.060mm, and adhesive layer is water-based adhesive, and coating weight is 2~4g/m2.The utility model has used not easily stretchable, on-deformable material PET to replace material BOPP, PET/EVOH semi-finished product the cursor spacing zoom ranges of flexible type from ± 2 ‰ before, is changed to present ± 1 ‰；The online corona gluings of EVOH, corona value range is in 2000 3000W so that peel strength significantly improves between PET and evoh layer, from original 2~3N/15mm of peel strength, increases 3~4N/15mm of peel strength till now；Previous solvent type adhesive is substituted using water-based adhesive, is reduced to being injured caused by operator itself, will not be reduced the influence to environment to environmental emission organic solvent.
Description
Technical field
The utility model is related to acceptable packaging material field more particularly to a kind of stretch-proof composite membranes.
Background technology
BOPP/EVOH (Biaxially oriented polypropylene/ethylene-vinyl alcohol copolymer) is a kind of composite membrane of double-layer structure, often
Packaging as drug, food, cosmetics etc..EVOH films (ethylene-vinyl alcohol copolymer) are a kind of high resistants that application is most
It is there is fabulous barrier property and fabulous processability, otherwise see-through property glossiness, mechanical strength, to stretch gas every property material
Contracting, wearability, cold resistance and surface strength are all very excellent.BOPP film is a kind of very important flexible packing material,
BOPP film is colourless, odorless, tasteless, nontoxic, and with high tensile, impact strength, rigidity, obdurability and good transparent
Property.BOPP film surface energy is low, needs to carry out sided corona treatment before gluing or printing.After sided corona treatment, BOPP film has good
Printing adaptability, exquisite appearance can be obtained with chromaticity printing, thus be commonly used for the surface material of laminated film.
Process is used by BOPP/EVOH in the prior art：Printing-compound-cutting-packaging.Used by general
Combination process is all dry-lamination process.The shortcomings that prior art, is as follows：(1) BOPP is easy accumulation electrostatic, without heat sealability, easily
It stretches, deformation；(2) BOPP/EVOH semi-finished product are not easy tracking cursor, are easy sideslip；(3) peeling force is inclined between BOPP and evoh layer
It is low；(4) BOPP is not easy release solvent, and solvent residual amount is higher；(5) dry-lamination process used uses in process of production
A large amount of organic solvent, can cause environmental pollution, and certain injury is also resulted in operator itself.
Utility model content
The technical problem to be solved by the present invention is to：There is provided that a kind of easy tracking cursor, peeling force are high, not late release is molten
Agent, environmental-friendly stretch-proof composite membrane.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of stretch-proof composite membrane, including surface layer and hot sealing layer, are bonded between surface layer and hot sealing layer by adhesive layer, surface layer
For polyester film, thickness range is 0.012~0.018mm, and hot sealing layer is ethylene-vinyl alcohol copolymer film, thickness model
It encloses for 0.030~0.060mm, adhesive layer is water-based adhesive, and coating weight is 2~4g/m2。
Further, the polyester film on surface layer is biaxially oriented polyester film.
Further, the thickness of the polyester film on surface layer is 0.015mm.
Further, the ethylene-vinyl alcohol copolymer film of hot sealing layer glues for online corona, and corona value is ranging from
2000-3000W。
Further, the thickness of the ethylene-vinyl alcohol copolymer film of hot sealing layer is 0.045mm.
Further, the coating weight of the water-based adhesive of adhesive layer 2 is 3g/m2。
The utility model has the beneficial effects that：
(1) used not easily stretchable, on-deformable material PET replace the material BOPP, PET/EVOH half of flexible type at
Product cursor spacing zoom ranges are changed to present ± 1 ‰ from ± 2 ‰ before.
(2) the online corona gluings of EVOH, corona value range is in 2000-3000W so that peel strength between PET and evoh layer
It significantly improves, from original 2~3N/15mm of peel strength, increases 3~4N/15mm of peel strength till now.
(3) previous solvent type adhesive is substituted using water-based adhesive, reduced to being injured caused by operator itself,
The influence to environment will not be reduced to environmental emission organic solvent.
Description of the drawings
Fig. 1 is the structural schematic diagram of stretch-proof composite membrane.
In figure：The surface layers 1-, 2- adhesive layers, 3- hot sealing layers.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings and have
The utility model is described in further detail for body embodiment.
As shown in Figure 1, a kind of stretch-proof composite membrane, including surface layer 1 and hot sealing layer 3, pass through between surface layer 1 and hot sealing layer 3
Adhesive layer 2 bonds, and surface layer 1 is polyester film, and thickness range is 0.012~0.018mm, and hot sealing layer 3 is total for ethylene-vinyl alcohol
Homopolymer film, thickness range are 0.030~0.060mm, and adhesive layer 2 is water-based adhesive, and coating weight is 2~4g/m2.
The polyester film on surface layer 1 is biaxially oriented polyester film, and the thickness of the polyester film on surface layer 1 is 0.015mm, heat-sealing
The ethylene-vinyl alcohol copolymer film of layer 3 glues for online corona, corona value ranging from 2000-3000W, the second of hot sealing layer 3
The thickness of alkene-ethenol copolymer film is 0.045mm, and the coating weight of the water-based adhesive of adhesive layer 2 is 3g/m2
Polyester film (PET) is sheet to be made using extrusion molding, then through drawing using polyethylene terephthalate as raw material
Stretch manufactured thin-film material.
It can be divided into biaxially oriented polyester film and list with drawing process difference according to raw material used by production polyester film
To oriented polyester film, the surface layer of this programme is using biaxially oriented polyester film.
Biaxially oriented polyester film (BOPET) is to utilize to have light material (also referred to as having light material greatly), i.e., in raw material polyester slice
The film of (content of titanium dioxide 0.1%) by dry melting, extrusion, slab and vertically and horizontally stretching.BOPET film has strong
Spend the features such as high, rigidity is good, transparent, glossiness is high；Obdurability odorless, tasteless, colourless, nontoxic, outstanding；Its tensile strength is
3 times of PC films, nylon membrane, impact strength is 3-5 times of BOPP film, has fabulous wearability, folding resistance, pinhole resistance and resists
Lancinating etc.；Heat-shrinkable is minimum, at 120 DEG C, only shrinks 1.25% after 15 minutes；With good antistatic property, easily
It carries out vacuum aluminum-coated, PVDC can be coated with, to improve its heat sealability, barrier property and the adhesive force of printing；BOPET also has good
Heat resistance well, excellent boiling resistance, low temperature resistant freezing, good oil resistivity and chemical-resistant etc..BOPET film is removed
Nitrobenzene, chloroform, outside benzyl alcohol, most of chemicals cannot all be such that it dissolves.BOPET film water absorption rates are low, water-tolerant, fit
Preferably pack high-water content food.
Ethylene-vinyl alcohol copolymer (EVOH) is the iris action by polyvinyl processability and vinyl alcohol polymer
It is combined, ethylene-vinyl alcohol copolymer not only shows fabulous processing performance, but also to gas, smell, fragrance, solvent
Etc. showing excellent blocking effect.Due to same ethylene in conjunction with and have thermal stability, the laminated vessel containing EVOH barrier layer
It can reuse completely.Exactly these features enable the plastic containers containing EVOH barrier layer in terms of food packaging
Instead of many glass and canister.
Not easily stretchable, on-deformable material PET has been used to replace material BOPP, PET/EVOH the semi-finished product light of flexible type
Spacing zoom ranges are marked from ± 2 ‰ before, are changed to present ± 1 ‰.
The online corona gluings of EVOH, corona value range is in 2000-3000W so that peel strength is bright between pet layer and evoh layer
It is aobvious to improve, from original 2~3N/15mm of peel strength, increase 3~4N/15mm of peel strength till now.
It is glutinous material that water-based adhesive, which is with natural polymer or synthesis macromolecule, using water as solvent or dispersant, substitution pair
Environment has a toxic organic solvents of pollution, and a kind of environmentally friendly adhesive being prepared into.Using water-based adhesive substitute with
Past solvent type adhesive reduces to being injured caused by operator itself, will not be reduced pair to environmental emission organic solvent
The influence of environment.
The polyester film thickness on surface layer 1 is 0.012mm, the ethylene-vinyl alcohol copolymer film 0.030mm of hot sealing layer 3, is glued
The coating weight for closing the water-based adhesive of layer 2 is 2g/m2When, PET/EVOH composite membrane cursor spacing zoom ranges are ± 1 ‰, PET
Peel strength is 3N/15mm between layer and evoh layer.
The polyester film thickness on surface layer 1 is 0.015mm, the ethylene-vinyl alcohol copolymer film 0.045mm of hot sealing layer 3, is glued
The coating weight for closing the water-based adhesive of layer 2 is 3g/m2When, PET/EVOH composite membrane cursor spacing zoom ranges are ± 1 ‰, PET
Peel strength is 3.4N/15mm between layer and evoh layer.
The polyester film thickness on surface layer 1 is 0.018mm, the ethylene-vinyl alcohol copolymer film 0.060mm of hot sealing layer 3, is glued
The coating weight for closing the water-based adhesive of layer 2 is 4g/m2When, PET/EVOH composite membrane cursor spacing zoom ranges are ± 1 ‰, PET
Peel strength is 4N/15mm between layer and evoh layer.
Above embodiment does not constitute the restriction to the technical solution protection domain, any in the above embodiment
Spirit and principle within made by modifications, equivalent substitutions and improvements etc., should be included in the technical solution protection domain it
It is interior.
Claims (5)
1. a kind of stretch-proof composite membrane, including surface layer (1) and hot sealing layer (3), pass through bonding between surface layer (1) and hot sealing layer (3)
Layer (2) bonding, it is characterised in that：The surface layer (1) is polyester film, and thickness range is 0.012~0.018mm, the heat
Sealing (3) is ethylene-vinyl alcohol copolymer film, and thickness range is 0.030~0.060mm, and the adhesive layer (2) is water base
Adhesive, coating weight are 2~4g/m2。
2. stretch-proof composite membrane according to claim 1, it is characterised in that：The polyester film of the surface layer (1) is two-way
Oriented polyester film.
3. stretch-proof composite membrane according to claim 1, it is characterised in that：The thickness of the polyester film of the surface layer (1)
For 0.015mm.
4. stretch-proof composite membrane according to claim 1, it is characterised in that：The ethylene-vinyl alcohol of the hot sealing layer (3) is total
The thickness of homopolymer film is 0.045mm.
5. stretch-proof composite membrane according to claim 1, it is characterised in that：The water-based adhesive of the adhesive layer (2)
Coating weight is 3g/m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721854230.XU CN207931231U (en) | 2017-12-26 | 2017-12-26 | Stretch-proof composite membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721854230.XU CN207931231U (en) | 2017-12-26 | 2017-12-26 | Stretch-proof composite membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207931231U true CN207931231U (en) | 2018-10-02 |
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ID=63646941
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721854230.XU Active CN207931231U (en) | 2017-12-26 | 2017-12-26 | Stretch-proof composite membrane |
Country Status (1)
| Country | Link |
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| CN (1) | CN207931231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590986A (en) * | 2020-05-07 | 2020-08-28 | 合肥佛斯德新材料科技有限公司 | High-temperature-cooking-resistant composite packaging bag and preparation method thereof |
-
2017
- 2017-12-26 CN CN201721854230.XU patent/CN207931231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590986A (en) * | 2020-05-07 | 2020-08-28 | 合肥佛斯德新材料科技有限公司 | High-temperature-cooking-resistant composite packaging bag and preparation method thereof |
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