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High-strength plastic thin film and preparation method thereof

A plastic film, high-strength technology, used in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of high melt viscosity of HDPE, unfavorable film blowing, etc., and achieve good thermal stability and breaking strength. And the effect of high tensile strength and stable production

Inactive Publication Date: 2016-09-07
XIAMEN AMESON NEW MATERIAL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high melt viscosity of HDPE, it is not conducive to its film blowing. The ordinary single-screw extruder commonly used in my country can only produce high-pressure polyethylene films, and the thickness of the produced films is generally above 3C.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 82kg of high-density polyethylene; 2kg of opening agent; 1.5kg of slippery agent; 1.5kg of antistatic agent; 13kg of linear low-density polyethylene.

[0043] The above-mentioned components are mixed and divided into three parts according to the weight ratio of 3:3:4, which are successively used as raw materials for the upper layer, middle layer and bottom layer. The raw materials of the three layers are sent to the three-layer spiral mandrel die head through the screw extruder respectively, and are extruded together. The mechanism forms the film into a cylinder.

Embodiment 2

[0045] 80kg of high-density polyethylene; 15kg of linear low-density polyethylene; 2kg of anti-blocking agent; 1kg of smoothing agent; 2kg of antistatic agent.

[0046] The high-density polyethylene is divided into two parts, 40kg each, and the opening agent, slip agent, and antistatic agent are divided into three parts according to the weight ratio of 3:3:4, and added to the first high-density polyethylene and the second high-density polyethylene respectively. In high-density polyethylene and linear low-density polyethylene, it is used as the raw material for the upper layer, middle layer, and bottom layer in turn. The raw materials of the three layers are sent to the three-layer spiral mandrel die head through the screw extruder respectively, and are extruded together. The mechanism forms the film into a cylinder.

Embodiment 3

[0048] 75kg of high-density polyethylene; 18kg of linear low-density polyethylene; 2.5kg of anti-blocking agent; 2kg of smoothing agent; 2.5kg of antistatic agent.

[0049] Anti-blocking agent, slip agent and antistatic agent were added to high-density polyethylene and linear low-density polyethylene in a ratio of 5:5. When extruding, the high-density polyethylene component is first added to the extruder, and then the linear low-density polyethylene component is added to the barrel, extruded through the die, and then the film is blown. This method can also form multilayer films.

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Abstract

The invention discloses a thin film. The thin film is prepared from the following raw materials in parts by mass: 70 to 88 parts of high-density polyethylene, 8 to 25 parts of linear low-density polyethylene, 0.5 to 5 parts of an anti-blocking agent, 0.1 to 3 parts of a slipping agent and 0.5 to 5 parts of an antistatic agent. The invention further discloses a preparation method of the thin film; the thin film is prepared by conveying each layer of the thin film into a die head through an extruder and extruding, and carrying out film blowing, drafting and curling after air ring cooling. The thickness of the thin film prepared by the invention is controllable and can be lowered to be 1c to 2c; meanwhile, the breaking strength and the tensile strength are high and the heat stability is good.

Description

technical field [0001] The invention relates to a plastic product and a preparation method thereof, in particular to a high-strength plastic film and a preparation method thereof. Background technique [0002] The blown film process is a commonly used plastic processing technology, which refers to the process of blowing plastic particles into a film by melting. After entering the extruder, it contacts with the beveled edge of the screw thread, and the rotating bevel produces a thrust perpendicular to the beveled edge on the plastic. During the process of moving the plastic particles forward, due to the friction between the plastic, the screw and the barrel, and the particle collision At the same time, the molten plastic is gradually melted by external heating, filtered through the machine head to remove impurities, extruded from the mouth, cooled by the air ring, blown and stabilized, and the finished film is passed through the herringbone plate, traction roller and take-up ...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/06B32B27/18B32B33/00C08L23/06C08L23/08
CPCB32B27/32B32B27/08B32B27/18B32B33/00B32B2307/54C08L23/06C08L2201/08C08L2201/10C08L2203/16C08L2205/02C08L2207/062
Inventor 涂宗铃陈雪娥
Owner XIAMEN AMESON NEW MATERIAL INC
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