CN206551620U - A kind of novel high-barrier stretched film - Google Patents
A kind of novel high-barrier stretched film Download PDFInfo
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- CN206551620U CN206551620U CN201720140660.9U CN201720140660U CN206551620U CN 206551620 U CN206551620 U CN 206551620U CN 201720140660 U CN201720140660 U CN 201720140660U CN 206551620 U CN206551620 U CN 206551620U
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Abstract
The utility model is related to daily bread flexible packing material technical field, and in particular to a kind of novel high-barrier stretched film.A kind of novel high-barrier stretched film of the present utility model, compared with prior art, PVDC coated thin films are replaced with asymmetric nylon polypropylene coextruded film, because the cost of asymmetric nylon polypropylene coextruded film is less than the cost of PVDC coated thin films, a kind of novel high-barrier stretched film of the present utility model has advantage with low cost, in addition, the oxygen transmission rate of asymmetric nylon polypropylene coextruded film is 20cm3/m2.24h.1atm, requirement of the high-barrier stretched film to oxygen transmission rate can be met.
Description
Technical field
The utility model is related to daily bread flexible packing material technical field, and in particular to a kind of novel high-barrier stretching
Film.
Background technology
Refering to Fig. 1, the existing ecto-entad of high-barrier stretched film 1 includes basement membrane 2, PVDC coated thin films 3 and polypropylene successively
Film 4, wherein, basement membrane 2, PVDC coated thin films 3 and polypropylene film 4 pass sequentially through adhesive and are composited.Basement membrane 2 is generally
Polyester polyethylene terephthalate thin film, bidirectional stretching polypropylene film or nylon film, PVDC coated thin films 3 are by PVDC
Copolymer latex is coated on basement membrane 2 and formed, and PVDC copolymer latexes are a kind of macromolecule aqueous dispersions, and its coating process is solvent-free to be waved
Hair, it is also free from environmental pollution, because the main barrier composition VDC (vinylidene chloride) of PVDC copolymer latexes accounts for PVDC copolymer latexes
90-92%wt, therefore, the moisture-inhibiting of PVDC copolymer latexes, oxygen transmission rate are extremely low, and generally oxygen transmission rate is 5-20 cm3/
m2.24h.1atm.Existing high-barrier stretched film 1 is generally used for packaging dried bean curd class, Beef and in egg products stretch package, and beans
Ganlei, Beef and belong to the low-grade level of consumption in egg products, existing high-barrier stretched film 1 is applied due to the PVDC containing high cost
Cloth film 3, causes existing high-barrier stretched film 1 not have cost advantage.
Utility model content
The purpose of this utility model is to be directed to deficiency of the prior art, and provides a kind of new high resistant with low cost
Every stretched film.
To achieve the above object, the technical scheme that the utility model is taken is：A kind of novel high-barrier stretched film, the drawing
Stretch asymmetric nylon-polypropylene coextruded film of the film including basement membrane and bonding basement membrane.
Nylon and polypropylene are in asymmetric distribution in asymmetric nylon-polypropylene coextruded film structure, nylon in outer layer or
Internal layer.According to different content packing instructions and tensile property requirement, to determine the type and nylon of polypropylene materials
Thickness.The thickness of general nylon is the 30-50% of asymmetric nylon-polypropylene coextruded film integral thickness.Wherein, thickness ratio
Example is mainly used in dried bean curd class, Beef stretch package for the packaging of 30% nylon.Thickness proportion is main for the packaging of 40% nylon
For egg products stretch package.Thickness proportion is mainly used for being combined shallow stretch package for the packaging of 50% nylon.
Wherein, the asymmetric nylon-polypropylene coextruded film bonds the basement membrane by adhesive.
Wherein, the adhesive is polyurethane.
Wherein, the basement membrane is that polyester polyethylene terephthalate thin film, bidirectional stretching polypropylene film or nylon are thin
Film.
Wherein, the structure of the asymmetric nylon-polypropylene coextruded film is PP/TIE/PA.
Wherein, the structure of the asymmetric nylon-polypropylene coextruded film is PP/PP/TIE/PA/PA.
Wherein, the structure of the asymmetric nylon-polypropylene coextruded film is PP/PP/PP/TIE/PA.
It should be noted that what those of ordinary skill in the art knew, a kind of novel high-barrier stretched film of the utility model
Asymmetric nylon-polypropylene co-extrusion with PP/TIE/PA, PP/PP/TIE/PA/PA or PP/PP/PP/TIE/PA structure
Film can be obtained directly from supplier.
The beneficial effects of the utility model：
A kind of novel high-barrier stretched film of the present utility model, it is compared with prior art, common with asymmetric nylon-polypropylene
Squeeze film and replace PVDC coated thin films, because the cost of asymmetric nylon-polypropylene coextruded film is less than PVDC coated thin films
A kind of cost, novel high-barrier stretched film of the present utility model has advantage with low cost, in addition, asymmetric nylon-poly- third
The oxygen transmission rate of alkene coextruded film is 20cm3/m2.24h.1atm, requirement of the high-barrier stretched film to oxygen transmission rate can be met.
Brief description of the drawings
Fig. 1 is the structural representation of existing high-barrier stretched film.
Fig. 2 is a kind of structural representation of novel high-barrier stretched film of the utility model.
Fig. 3 is the first structural representation of asymmetric nylon-polypropylene coextruded film in Fig. 2.
Fig. 4 is second of structural representation of asymmetric nylon-polypropylene coextruded film in Fig. 2.
Fig. 5 is the third structural representation of asymmetric nylon-polypropylene coextruded film in Fig. 2.
Reference：
The existing high-barrier stretched films of 1-, 2- basement membranes, 3-PVDC coated thin films, 4- polypropylene films, the new new height of this reality of 5-
Obstruct the first knot of stretched film, the asymmetric nylon of 6--polypropylene coextruded film, the asymmetric nylon of 61--polypropylene coextruded film
The of structure, 62- asymmetric nylon-second of structure of polypropylene coextruded film, the asymmetric nylon of 63--polypropylene coextruded film
Three kinds of structures.
Embodiment
The utility model is further described with the following Examples.
It should be noted that it is that binding resin, PA are nylon that the PP in embodiment, which is polypropylene, TIE,.
It should also be noted that, with TIE be that binding resin is combined together between PP and PA, between PA and PA, PP and PP
Between during extrusion fusing point be the same, can be fused together, it is not necessary to which binding resin is incorporated into.
Refering to Fig. 2, a kind of embodiment of novel high-barrier stretched film of the utility model, the new novel high-barrier stretched film of this reality
5 include basement membrane 4 and bond asymmetric nylon-polypropylene coextruded film 6 of basement membrane 4, and the asymmetric nylon-polypropylene co-extrusion is thin
Film 6 bonds the basement membrane 4 by adhesive, and the basement membrane 4 is polyester polyethylene terephthalate thin film, certainly, the base
Film 4 can also be bidirectional stretching polypropylene film or nylon film.The adhesive is polyurethane.
Refering to Fig. 3, the first structure 61 of asymmetric nylon-polypropylene coextruded film of the present utility model is PP/TIE/
PA.Refering to Fig. 4, second of structure 62 of asymmetric nylon-polypropylene coextruded film of the present utility model is PP/PP/TIE/PA/
PA, refering to Fig. 5, the third structure 63 of asymmetric nylon-polypropylene coextruded film of the present utility model is PP/PP/PP/TIE/
PA。
Finally it should be noted that above example is only illustrating the technical solution of the utility model, rather than to this reality
With the limitation of novel protected scope, although being explained with reference to preferred embodiment to the utility model, this area it is general
Lead to it will be appreciated by the skilled person that can be modified to the technical solution of the utility model or equivalent substitution, without departing from this
The spirit and scope of utility model technical scheme.
Claims (7)
1. a kind of novel high-barrier stretched film, it is characterised in that the stretched film includes basement membrane and bonds the asymmetric Buddhist nun of basement membrane
Dragon-polypropylene coextruded film.
2. novel high-barrier stretched film as claimed in claim 1, it is characterised in that the asymmetric nylon-polypropylene co-extrusion
Film bonds the basement membrane by adhesive.
3. novel high-barrier stretched film as claimed in claim 2, it is characterised in that the adhesive is polyurethane.
4. novel high-barrier stretched film as claimed in claim 1, it is characterised in that the basement membrane is polyester poly terephthalic acid
The ester film of second two, bidirectional stretching polypropylene film or nylon film.
5. the novel high-barrier stretched film as described in claim any one of 1-4, it is characterised in that the asymmetric nylon-poly-
The structure of propylene coextruded film is PP/TIE/PA.
6. the novel high-barrier stretched film as described in claim any one of 1-4, it is characterised in that the asymmetric nylon-poly-
The structure of propylene coextruded film is PP/PP/TIE/PA/PA.
7. the novel high-barrier stretched film as described in claim any one of 1-4, it is characterised in that the asymmetric nylon-poly-
The structure of propylene coextruded film is PP/PP/PP/TIE/PA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140660.9U CN206551620U (en) | 2017-02-16 | 2017-02-16 | A kind of novel high-barrier stretched film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140660.9U CN206551620U (en) | 2017-02-16 | 2017-02-16 | A kind of novel high-barrier stretched film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206551620U true CN206551620U (en) | 2017-10-13 |
Family
ID=60010745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720140660.9U Active CN206551620U (en) | 2017-02-16 | 2017-02-16 | A kind of novel high-barrier stretched film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206551620U (en) |
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2017
- 2017-02-16 CN CN201720140660.9U patent/CN206551620U/en active Active
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