VMCPP film with high aluminium layer adhesive force

A technology of adhesion and high aluminum layer, which is applied in the direction of layered products, synthetic resin layered products, flexible coverings, etc., to achieve the effect of improving bonding strength, good affinity, and enhancing adhesion

Inactive Publication Date: 2014-10-29
安徽双津实业有限公司
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The corona layer described in the patent of patent application number 200710133787.9 is composed of isotactic homopolypropylene or copolymerized polypropylene, polyolefin elastomer that can be melt-mixed with polypropylene, and anti-stic

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
  • VMCPP film with high aluminium layer adhesive force

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing:

[0014] Such as figure 1 Shown, a kind of VMCPP film of high aluminum layer adhesion, base film adopts three-layer co-extrusion casting method to produce, the three-layer co-extrusion casting film that the present invention has high adhesion to aluminized layer comprises:

[0015] a) Corona layer 2, acrylic polymer and polypropylene blend. Acrylic polymer is preferably ethylene methyl methacrylate copolymer, and polypropylene is preferably binary copolymerized polypropylene.

[0016] b) The middle layer 3, consisting of isotactic homopolypropylene. Isotactic homopolypropylenes containing only antioxidants and chlorine scavengers are particularly preferred.

[0017] c) Heat seal layer 4, composed of polypropylene copolymer. The types of copolymers are: propylene-ethylene copolymer, propylene-butene copolymer, propylene-octene copolymer, pro...

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

No PUM Login to view more

Abstract

The invention relates to a VMCPP film with a high aluminium layer adhesive force. A base film is produced by adopting a three-layer co-extrusion tape-casting method. The three layers are a corona layer, an intermediate layer and a heat-sealing layer respectively. Detection results of the aluminum plating adhesive force are higher than 3.0 N/15 mm that is more than 5 times of the adhesive force of a common aluminum plating film. The thickness ratio of the three layers are that the thickness ratio of the corona layer is 5-30%, the thickness ratio of the intermediate layer is 10-85% and thickness ratio of the heat-sealing layer is 10-30%. By utilization of characteristics of acrylate polymer materials, the adhesion strength of an aluminum layer and polypropylene is enhanced, thus achieving effects of enhancing the adhesive force of aluminum plating layers. The acrylate polymer has good molten miscibility with the polypropylene, and is free of influence on physical properties of the film. In addition, the polarity of the material is in good affinity with aluminum, thus enhancing the adhesive force between the aluminum plating and the corona layer polypropylene.

Description

technical field [0001] The patent of the invention relates to a vacuum aluminized VMCPP film with high aluminum layer adhesion, which is used in the fields of printing, compounding and packaging, and is suitable for packaging of food, medicine and daily chemical products. Background technique [0002] Due to its excellent barrier properties to water vapor and oxygen, the vacuum aluminized film has been widely used in the food packaging industry. However, after ordinary vacuum aluminized cast film is compounded with other films, the aluminum layer will transfer or the peeling force will be too small, resulting in easy delamination of the composite film, which seriously affects the shelf life of the product. Ordinary vacuum aluminized cast film generally adopts a three-layer structure: corona layer, intermediate layer, heat seal layer, the corona layer uses a blend of acrylic polymer and polypropylene, the middle layer uses homopolypropylene, and the heat seal layer Co-polypr...

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
IPC IPC(8): B32B15/08B32B27/08B32B27/32B32B27/36B32B33/00B65D65/40
Inventor 唐健王帮新张治国
Owner 安徽双津实业有限公司
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