High-temperature cooking-resistant easy-peeling high-barrier nylon composite film and preparation method thereof

A high-barrier, high-temperature-resistant technology, applied in the field of high-barrier nylon composite film and its preparation, can solve the problems of inconvenient operation, the need to improve the oxygen barrier performance, and the high cost of the composite process, and achieve the effect of zero emission reduction

Active Publication Date: 2019-12-20
厦门长塑实业有限公司
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN207156619U, published on March 30, 2018, discloses an easy-to-remove cover film resistant to high-temperature cooking, which adopts the following structure: BOPA / glue layer / polypropylene layer / easy-to-remove layer, but there are also the following problems: ① Barrier Oxygen performance needs to be improved
②The production process of glue compounding is adopted, the cost of the compounding process is relatively high, the operation is inconvenient, and there are problems such as VOCs emission and environmental pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature cooking-resistant easy-peeling high-barrier nylon composite film and preparation method thereof
  • High-temperature cooking-resistant easy-peeling high-barrier nylon composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The composite film sequentially includes a modified polypropylene layer 10, an adhesive layer 20, a first barrier layer 30, a second barrier layer 40 and a nylon layer 50 from top to bottom; the total thickness is 45 μm.

[0041] The composition of the modified polypropylene layer is 78% high temperature resistant homopolypropylene, 1% ethylene acrylic acid copolymer, 20% styrene block copolymer, 0.5% poly-4-methyl-1-pentene, 0.5% anti-blocking agent; the thickness is 10μm.

[0042] The adhesive layer is made of maleic anhydride-modified random polypropylene; the thickness is 5 μm.

[0043] The first barrier layer consists of 95% copolymerized nylon 6 / 66 and 5% modified polyvinyl alcohol resin composition; the thickness is 10 μm; wherein, the modified polyvinyl alcohol resin composition is: using vinyl modified polyethylene Alcohol and nano magnesium oxide for modification.

[0044] The composition of the second barrier layer is 95% EVOH and 5% PA6I / 6T; the thickness ...

Embodiment 2

[0048] The composite film sequentially includes a modified polypropylene layer 10, an adhesive layer 20, a first barrier layer 30, a second barrier layer 40 and a nylon layer 50 from top to bottom; the total thickness is 35 μm.

[0049] The composition of the modified polypropylene layer is 73% high temperature resistant homopolypropylene, 10% ethylene acrylic acid copolymer, 15% styrene block copolymer, 1% 4-methyl-1-pentene random Copolymer, 1% slip agent; thickness 6 μm.

[0050] The adhesive layer is made of maleic anhydride-modified ethylene-acrylate; the thickness is 5 μm.

[0051] The composition of the first barrier layer is 90% copolymerized nylon 66 / 6 and 10% modified polyvinyl alcohol resin composition; the thickness is 10 μm; wherein, the modified polyvinyl alcohol resin composition is: using carboxy-modified polyvinyl alcohol and Nano-magnesium oxide was modified.

[0052] The composition of the second barrier layer is 90% EVOH and 10% PA6I / 6T; the thickness is ...

Embodiment 3

[0056] The composite film sequentially includes a modified polypropylene layer 10, an adhesive layer 20, a first barrier layer 30, a second barrier layer 40 and a nylon layer 50 from top to bottom; the total thickness is 20 μm.

[0057] The composition of the modified polypropylene layer is 70.5% high temperature resistant homopolypropylene, 25% ethylene acrylic acid copolymer, 1% styrene block copolymer, 2% 4-methyl-1-pentene and α- Olefin copolymer, 1% slip agent, 0.5% antistatic agent; thickness 4μm.

[0058] The adhesive layer is made of maleic anhydride-modified ethylene vinyl acetate; the thickness is 2 μm.

[0059] The composition of the first barrier layer is a modified polyvinyl alcohol resin composition of 75% nylon 66 / 610 and 25%; the thickness is 5 μm; wherein, the modified polyvinyl alcohol resin composition is: glycidyl methacrylate Modified polyvinyl alcohol and nano magnesium oxide are used for modification.

[0060] The composition of the second barrier laye...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to the field of flexible packaging materials, in particular to a high-temperature cooking-resistant easy-peeling high-barrier nylon composite film and a preparation method thereof. The composite film includes a modified polypropylene layer, an adhesive layer, a first barrier layer, a second barrier layer and a nylon layer from top to bottom, wherein the modified polypropylenelayer comprises homo-polypropylene, an ethylene-acrylic copolymer, a styrene block copolymer, a poly(4-methyl-1-pentene) structure unit-containing copolymer and other additives, high-temperature-resistant homo-polypropylene is adopted by the homo-polypropylene, the first barrier layer comprises copolymerized nylon and modified polyvinyl alcohol resin, and the second barrier layer is composed of EVOH and amorphous nylon resin. The nylon composite film has high oxygen barrier performance, and can withstand high-temperature cooking at 121 DEG C, and no delamination, no fiber drawing and uncovered smooth marks are generated after high-temperature cooking is performed; and the heat-sealing strength is appropriate when the nylon composite film is combined with a polypropylene sheet, easy uncovering is achieved, zero emission of VOCs is achieved, and the nylon composite film can be widely applied to food packaging and other fields.

Description

technical field [0001] The invention relates to the field of flexible packaging materials, in particular to a high-barrier nylon composite film resistant to high-temperature cooking and easy to peel off and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the packaging industry, various shapes of packaging containers such as bowls, cups, barrels and boxes have developed rapidly, and more and more foods such as canned fruits, canned meat, porridge, jelly And so on began to use this kind of packaging to replace the packaging of glass bottles and tinplate cans. The common feature of this kind of packaging is that they all need cover film materials, and most of them need to be sterilized at high temperature during the production process. Therefore, the cover film material is required to have the characteristics of high barrier performance, moderate heat-sealing strength, easy to peel off, and can withstand high-temperatu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/34B32B27/32B32B7/12B32B27/02B32B27/30B32B27/18B32B27/08B32B27/12B29D7/01
CPCB29D7/01B32B5/02B32B7/12B32B27/08B32B27/12B32B27/18B32B27/306B32B27/32B32B2250/05B32B2262/0261B32B2307/306B32B2439/70
Inventor 林新土牟青英陈曦贾露李智尧郑伟刘运锦
Owner 厦门长塑实业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap