Composite film
A composite film and composite material technology, which is applied in the field of composite film for food packaging, can solve the problems of insufficient properties such as acid and alkali resistance, corrosion resistance, and aging resistance, and achieve the effects of low cost, strong elongation, and easy processing and use
Inactive Publication Date: 2013-11-13
KUNSHAN RONGAO WEIJIE TRADE
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Composite membranes are mainly used in separation processes such as reverse osmosis, gas separation, and pervaporation. Two different membrane materials are used to make a surface active layer (dense separation layer) with separation function and a porous layer that acts as a support. Although the traditional composite film used in food packaging materials has good anti-seepage performance and good elongation performance, it is still insufficient in acid and alkali resistance, corrosion resistance, and aging resistance. Strength and tensile properties also have certain requirements
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0014] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0015] A composite film, comprising a support layer 1 and a barrier layer 3, the support layer 1 is composed of OPP and CPP, the barrier layer 3 is a composite material of NY and PVDC, the support layer 1 and the barrier layer There is a tensile layer 2 between the 3, and the support layer 1 is made of OPP and CPP, which has good physical properties of tear resistance and bursting, and has good acid and alkali resistance, corrosion resistance, and aging resistance. NY and PVDC All have strong elongation properties, so the deformation modulus is large, and the tensile layer mainly plays a good tensile role on the food packaging film.
[0016] In one embodiment of the present invention, the tensile layer 2 is made of PA material, and the thickness o...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a composite film relating to the field of packaging materials. The composite film comprises a supporting layer and a barrier layer, wherein the supporting layer is formed by compounding OPP (Oriented Polypropylene) and CPP (Chlorinated Polypropylene); the barrier layer is a composite material of NY (Nylon) and PVDC (Polyvinyl Dichloride); a tensile layer is arranged between the supporting layer and the barrier layer; the supporting layer is formed by compounding the OPP and the CPP so that the supporting layer has good anti-tearing and bursting physical properties, and has good acid-alkali resistance, corrosion resistance and ageing resistance; the NY and the PVDC have strong extending performances so that the modulus of deformation is great and the tensile layer mainly has a good tensile effect on a food packaging film.
Description
technical field [0001] The invention relates to the field of packaging materials, in particular to a composite film for food packaging. Background technique [0002] Composite membranes are mainly used in separation processes such as reverse osmosis, gas separation, and pervaporation. Two different membrane materials are used to make a surface active layer (dense separation layer) with separation function and a porous layer that acts as a support. Although the traditional composite film used in food packaging materials has good anti-seepage performance and good elongation performance, it is still insufficient in acid and alkali resistance, corrosion resistance, and aging resistance. Strength and tensile properties also have certain requirements. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a fruit wrapping paper with strong moisture resistance and good antiseptic performance. [000...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/34B32B27/30B65D65/40
Inventor 徐思伟
Owner KUNSHAN RONGAO WEIJIE TRADE