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Composite film

A composite membrane and polyurethane polymer technology, applied in the field of composite membranes, can solve the problems of low breaking strength of collagen films, easy to be damaged by mice when placed, low crack propagation strength, etc., and achieves excellent sliding performance and good mechanical properties. and durable performance, the effect of prolonging the service life

Inactive Publication Date: 2015-07-22
ANHUI SONGTAI PACKAGING MATERIALS
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional packaging film used for food is not strong enough, and it is easy to be damaged by mice etc. during the placement process
[0003] In addition, collagen films have very low breaking strength and have lower crack propagation strength; thus micro-damages lead to progressively expanding cracks in the film
Furthermore, collagen films can only be processed under very limited humidity and temperature conditions

Method used

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Examples

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specific Embodiment approach

[0012] Specific embodiments of the present invention: a composite film comprising six layers, the six layers are successively a printing layer, a polypropylene resin layer, a first adhesive layer, a polyurethane polymer layer, a second adhesive layer and an overprint varnish layer The polypropylene resin layer is composed of viscose, silicone and polypropylene, calculated by mass percentage: 10% of viscose, 35% of silicone, 55% of polypropylene, and the polyurethane polymer layer is composed of viscose, silicone Composed of polyurethane and polyurethane, calculated by mass percentage: 10% viscose, 40% silicone, 50% polyurethane, the thickness of the composite film is 0.2-0.5mm, the polypropylene resin layer is also equipped with a silicone moisture-proof agent, and the polyurethane polymer layer is also set The antibacterial agent is zinc oxide or copper oxide, and the overprint varnish layer contains an extender, and the extender is one or more of calcium carbonate, magnesium ...

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Abstract

The invention discloses a composite film. The composite film comprises six layers, namely a printing layer, an polypropylene resin layer, a first bonding layer, a polyurethane polymer layer, a second bonding layer and an overprint varnish layer, wherein the polypropylene resin layer consists of mucilage glue, silicon ketone and polypropylene, and the polyurethane polymer layer consists of mucilage glue, silicon ketone and polyurethane. Based on the prior art, the ultraviolet-proof effect of the packaging film is greatly improved, the packaging film is safe and feasible, and the sliding property of the packaging film is extremely excellent.

Description

technical field [0001] The invention relates to the field of packaging films, in particular to a composite film. Background technique [0002] The packaging film is mainly composed of several different grades of polypropylene resin mixed and extruded. It is puncture-resistant, super-strength and high-performance. It wraps the goods stacked on the pallet to make the package more stable, tidy, and super waterproof. It is widely used in foreign trade export, paper making, hardware, plastic chemical industry, building materials, food and medicine industries. The traditional packaging film used for food is not strong enough, and it is easy to be damaged by mice etc. during the placement process. [0003] In addition, collagen films have very low breaking strength and have lower crack propagation strength; therefore, microscopic damages lead to progressively propagating cracks in the film. Furthermore, collagen films can only be processed under very limited humidity and temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/40B32B27/20B32B33/00B65D65/40
Inventor 焦国平齐继业方兴旺
Owner ANHUI SONGTAI PACKAGING MATERIALS
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