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Composite thin film having stable friction coefficient

A friction coefficient, composite technology, used in synthetic resin layered products, flexible coverings, packaging, etc., can solve the problems of film sticking, solvent residue, easy deviation, etc., and achieve improved production efficiency and stable friction coefficient. , the effect of ensuring safety

Active Publication Date: 2016-08-10
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In my country, food packaging bags are basically produced by solvent-based dry compounding process, which has certain impacts on energy consumption, environmental protection and sanitation, especially the problem of solvent residues, which has caused environmental and food safety problems. certain hazard
[0004] In addition, different packaging equipment has different requirements for packaging film materials. With the automation of product packaging, some manufacturers need packaging film materials to drive the packaged products when producing products. Ordinary packaging films cannot meet the requirements of equipment, such as ordinary CPP / The friction coefficient of BOPP packaging film produced by solvent-based dry compounding process is unstable, the friction coefficient is high, the roll film sticks, the film is not smooth, the friction coefficient is low, the product slips during transportation, and it is easy to deviate during the packaging process. Not conducive to the automatic packaging requirements of high-speed packaging equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The CPP / BOPP composite film includes polypropylene film and biaxially oriented polypropylene film. The polypropylene film is composed of a heat seal layer, a filling layer, and a corona layer; the heat seal layer includes a ternary copolymer polypropylene and an opening The mass ratio of the ternary copolymer polypropylene, the opening agent, and the slip agent is 99:0.9:0.5; the filling layer and the corona layer are both made of homopolypropylene, and the filling layer , The mass ratio of the homopolypropylene in the corona layer to the ternary copolymer polypropylene is 99:101; the thickness ratio of the heat-sealing layer, filling layer, and corona layer is 23:59:16; The composite film is obtained by compounding and curing the polypropylene film and the biaxially oriented polypropylene film through a solvent-free adhesive; the biaxially oriented polypropylene film is a biaxially oriented polypropylene printed film obtained by printing; The solvent-free adhesive is ma...

Embodiment 2

[0026] The CPP / BOPP composite film includes polypropylene film and biaxially oriented polypropylene film. The polypropylene film is composed of a heat seal layer, a filling layer, and a corona layer; the heat seal layer includes a ternary copolymer polypropylene and an opening The mass ratio of the ternary copolymer polypropylene, the blocking agent, and the slip agent is 101:0.7:0.7; the filling layer and the corona layer are all made of homopolypropylene, and the filling layer , The mass ratio of the homopolymer polypropylene in the corona layer to the ternary copolymer polypropylene is 101:99; the thickness ratio of the heat seal layer, the filling layer, and the corona layer is 24:61:17; The composite film is obtained by compounding and curing the polypropylene film and the biaxially oriented polypropylene film through a solvent-free adhesive; the biaxially oriented polypropylene film is a biaxially oriented polypropylene printed film obtained by printing; The solvent-free ...

Embodiment 3

[0032] The CPP / BOPP composite film includes polypropylene film and biaxially oriented polypropylene film. The polypropylene film is composed of a heat seal layer, a filling layer, and a corona layer; the heat seal layer includes a ternary copolymer polypropylene and an opening The mass ratio of the ternary copolymer polypropylene, the opening agent, and the slip agent is 100:0.8:0.6; the filling layer and the corona layer are both made of homopolypropylene, and the filling layer , The mass ratio of the homopolypropylene in the corona layer to the ternary copolymer polypropylene is 100:100; the thickness ratio of the heat-sealing layer, the filling layer, and the corona layer is 23.3:60:16.7; The composite film is obtained by compounding and curing the polypropylene film and the biaxially oriented polypropylene film through a solvent-free adhesive; the biaxially oriented polypropylene film is a biaxially oriented polypropylene printed film obtained by printing; The solvent-free ...

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Abstract

The invention relates to a composite thin film having stable friction coefficient. The composite thin film includes polypropylene thin film and biaxially oriented polypropylene thin film. Through regulation of formula of the polypropylene thin film, the composite thin film is prepared from the polypropylene thin film and the biaxially oriented polypropylene thin film through a solvent-free composition process. The composite thin film has good performance, stable friction coefficient and can satisfy high-speed automatic package of some product. The preparation of the composite thin film is free of solvent and is more environment-friendly, so that the composite thin film can ensure safety of food package. Compared with thin films prepared through a solvent composition process in the prior art, the composite thin film is increased by more than one times in production speed and is greatly increased in production efficiency.

Description

Technical field [0001] The invention belongs to the technical field of packaging film production, and specifically relates to a composite film with a stable friction coefficient. Background technique [0002] With the development of economy and society, people are paying more and more attention to food safety, and the requirements for food packaging bags are getting higher and higher. Food packaging bags have become a very important control factor for food safety. How to produce a high Good barrier, sealing strength, high composite strength, safe and aseptic food packaging bags seem to be urgent; not only that, people’s awareness of environmental protection is getting stronger and stronger, how to ensure that the production process of food packaging bags is more environmentally friendly, and at the same time can continuously improve the quality of food packaging bags Safety and high barrier properties have become the development trend of flexible packaging. [0003] The existing s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/06B32B7/12B32B33/00B65D65/40
CPCB32B7/12B32B27/08B32B27/18B32B27/32B32B33/00B32B2307/554B65D65/40
Inventor 汪学文汪云辉汪云峰徐新建方建华张春生王卫民
Owner HUANGSHAN NOVEL
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