CN214449187U - Reinforced composite high-barrier nylon composite film - Google Patents
Reinforced composite high-barrier nylon composite film Download PDFInfo
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- CN214449187U CN214449187U CN202022663417.XU CN202022663417U CN214449187U CN 214449187 U CN214449187 U CN 214449187U CN 202022663417 U CN202022663417 U CN 202022663417U CN 214449187 U CN214449187 U CN 214449187U
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Abstract
The utility model discloses a reinforced composite high-barrier nylon composite film, which consists of a heat sealing layer, an adhesive layer and a substrate layer from outside to inside in sequence; the heat sealing layer is an antibacterial cast polypropylene film; the substrate layer is five layers of crowded biaxial stretching nylon films altogether, and the substrate layer sets gradually into nylon reinforcement composite bed, first nylon layer, EVOH barrier layer, second nylon layer and anti-adhesion smooth nylon top layer from outer to interior, the nylon reinforcement composite bed passes through the adhesive layer and is connected with the heat-seal layer. The reinforced composite high-barrier nylon composite film has high composite strength, good barrier property and excellent antibacterial property, can be widely applied to food packaging, particularly packaging fields requiring water boiling, steaming and the like, and has wide market application prospect.
Description
Technical Field
The utility model belongs to the technical field of the film packing, concretely relates to compound high resistant nylon complex film that separates of reinforcing.
Background
Biaxially oriented nylon films (BOPA) are widely used in the fields of food packaging and the like because of their excellent barrier properties and puncture resistance. In practical application, the biaxially oriented nylon film is generally compounded with other films to form a composite film, and finally prepared into a bag. If the composite strength is too low, delamination or the like is likely to occur when special conditions such as boiling and steaming are required.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a compound high resistant of reinforcing separates nylon composite film, solved the problem among the above-mentioned background art.
The utility model provides a technical scheme that its technical problem adopted is: the reinforced composite high-barrier nylon composite film is provided and sequentially comprises a heat sealing layer, an adhesive layer and a base material layer from outside to inside;
the heat sealing layer is an antibacterial cast polypropylene film; the substrate layer is five layers of crowded biaxial stretching nylon films altogether, and the substrate layer sets gradually into nylon reinforcement composite bed, first nylon layer, EVOH barrier layer, second nylon layer and anti-adhesion smooth nylon top layer from outer to interior, the nylon reinforcement composite bed passes through the adhesive layer and is connected with the heat-seal layer.
In a preferred embodiment of the present invention, the thickness of the heat-sealing layer is 40 to 100 μm, and more preferably 45 to 80 μm, and the heat-sealing layer has excellent heat-sealing performance and antibacterial performance.
In a preferred embodiment of the present invention, the adhesive layer is a high temperature resistant polyurethane adhesive, and has a thickness of 1 to 3 μm, and more preferably 1.5 to 2.5 μm, and is mainly used for enhancing the adhesive force between the nylon reinforced composite layer and the heat sealing layer.
In a preferred embodiment of the present invention, the thickness of the substrate layer is 15 to 30 μm, and the upper surface and/or the lower surface of the substrate layer is provided with a corona surface.
In a preferred embodiment of the present invention, the thickness of the nylon reinforced composite layer is 1.5 to 3.5 μm, and more preferably 2 to 3 μm; the thickness of the EVOH barrier layer is 2-5 mu m, and more preferably 2-3 mu m; the thicknesses of the first nylon layer and the second nylon layer are 4-9 mu m, and the preferable thickness is 4.5-8 mu m; the anti-adhesion smooth nylon layer is of a three-layer structure, the thickness of the nylon layer is 1.5-3.5 mu m, and the preferable thickness is 1.7-2.5 mu m.
In a preferred embodiment of the present invention, the anti-adhesion and slipping nylon layer is PA6 resin containing anti-adhesion agent and slipping agent, wherein the anti-adhesion agent can be selected from one or a combination of calcium carbonate, silica, talc, diatomaceous earth, alumina, and calcium phosphate, and the slipping agent can be selected from one or a combination of oleic acid amide, ethylene bis stearamide, silicone powder, silicone oil, oxidized polyethylene wax, and ethylene-acrylic acid copolymer.
Compared with the background technology, the technical scheme has the following advantages:
1. the scheme adopts the cast polypropylene film added with the antibacterial agent as the heat sealing layer, so that the heat sealing layer can be widely applied to food packaging;
2. according to the scheme, the heat-sealing layer and the base material layer are compounded by adopting the high-temperature-resistant polyurethane glue, so that the compounding strength is high, and the glue is prevented from losing efficacy in the heat-sealing process;
3. the substrate layer adopts a five-layer composite structure, wherein a surface tension improver is added in the nylon reinforced composite layer, the composite strength can be improved, the range of the ethylene molar content in the EVOH barrier layer is 27-32%, good barrier property is realized, and the barrier and composite properties are enhanced by combining the first nylon layer and the second nylon layer, so that the composite strength of the substrate layer is integrally improved;
4. the film has high composite strength, good barrier property and excellent antibacterial property, can be widely applied to food packaging, particularly packaging fields needing water boiling, steaming and the like, and has wide market application prospect.
Drawings
Fig. 1 is a structural diagram of a reinforced composite high-barrier nylon composite film layer of example 1.
Wherein, the composite material comprises a 1-nylon reinforced composite substrate layer, a 11-nylon reinforced composite layer, a 12-first nylon layer, a 13-EVOH barrier layer, a 14-second nylon layer, a 15-anti-adhesion smooth nylon layer, a 2-anti-adhesion layer and a 3-heat sealing layer.
Detailed Description
The terms "inner" and "outer" are based on the film as a packaged state, the "inner" means a side close to the content, and the "outer" means a side far from the content.
Example 1
Referring to fig. 1, the reinforced composite high-barrier nylon composite film sequentially comprises a heat sealing layer 3, an adhesive layer 2 and a nylon reinforced composite substrate layer 1 from outside to inside. The nylon reinforced composite substrate layer 1 is a five-layer co-extrusion biaxially oriented nylon film and consists of a nylon reinforced composite layer 11, a first nylon layer 12, an EVOH barrier layer 13, a second nylon layer 14 and an anti-adhesion smooth nylon layer 15 from outside to inside in sequence.
The heat sealing layer 3 is an antibacterial cast polypropylene film with the thickness of 45 mu m;
the adhesive layer 2 is made of high-temperature-resistant polyurethane glue with the thickness of 2 mu m;
in the nylon reinforced composite substrate layer 1, a nylon reinforced composite layer 11(2 μm), a first nylon layer 12(4.5 μm), an EVOH barrier layer 13(2 μm), a second nylon layer 14(4.5 μm) and an anti-adhesion smooth nylon layer 15(2 μm) are prepared by five-layer co-extrusion biaxial stretching, and the total thickness is 15 μm.
The nylon reinforced composite layer 11 is made of nylon 6 added with a surface tension enhancer, and the nylon reinforced composite layer prepared by the method of CN111284096A polyamide film with improved printing composite effect and preparation method thereof has high surface tension and can improve the composite strength of the composite film;
the first nylon layer 12 is made of PA6 resin; the second nylon layer 14 is made of PA6 resin;
the EVOH barrier layer is made of EVOH resin with the ethylene molar content ranging from 27% to 32%;
the anti-adhesion smooth nylon layer is prepared from a three-layer-structure puncture-resistant biaxially oriented nylon film and a preparation method thereof which are published under the number CN108515762A, and has good anti-adhesion performance and smooth performance.
The reinforced composite high-barrier nylon composite film has high composite strength, good barrier property and excellent antibacterial property, can be widely applied to food packaging, particularly packaging fields requiring water boiling, steaming and the like, and has wide market application prospect.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a compound high resistant of reinforcing separates nylon composite film which characterized in that: the adhesive layer consists of a heat sealing layer, an adhesive layer and a base material layer from outside to inside in sequence;
the heat sealing layer is an antibacterial cast polypropylene film; the adhesive layer is high-temperature-resistant polyurethane glue; the substrate layer is five layers of crowded biaxial stretching nylon films altogether, and the substrate layer sets gradually into nylon reinforcement composite bed, first nylon layer, EVOH barrier layer, second nylon layer and anti-adhesion smooth nylon top layer from outer to interior, the nylon reinforcement composite bed passes through the adhesive layer and is connected with the heat-seal layer.
2. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the thickness of the heat sealing layer is 40-100 mu m.
3. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the thickness of the substrate layer is 15-30 mu m.
4. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the upper surface and/or the lower surface of substrate layer are provided with the corona face.
5. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the thickness of the nylon reinforced composite layer is 1.5-3.5 mu m.
6. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the thickness of the EVOH barrier layer is 2-5 mu m.
7. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the thickness of the first nylon layer is 4-9 mu m.
8. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the thickness of the second nylon layer is 4-9 mu m.
9. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the anti-adhesion smooth nylon surface layer is PA6 resin containing an anti-adhesion agent and a smooth agent.
10. The reinforced composite high-barrier nylon composite film according to claim 1, wherein: the thickness of the anti-adhesion smooth nylon surface layer is 1.5-3.5 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022663417.XU CN214449187U (en) | 2020-11-17 | 2020-11-17 | Reinforced composite high-barrier nylon composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022663417.XU CN214449187U (en) | 2020-11-17 | 2020-11-17 | Reinforced composite high-barrier nylon composite film |
Publications (1)
| Publication Number | Publication Date |
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| CN214449187U true CN214449187U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022663417.XU Active CN214449187U (en) | 2020-11-17 | 2020-11-17 | Reinforced composite high-barrier nylon composite film |
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| CN (1) | CN214449187U (en) |
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- 2020-11-17 CN CN202022663417.XU patent/CN214449187U/en active Active
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