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Foaming regeneration environment-friendly plastic sheet and preparation method thereof

A technology of environmentally friendly plastics and foaming raw materials, applied in the direction of chemical instruments and methods, lamination, layered products, etc., can solve the problems of specific gravity and other problems, and achieve the effect of reducing specific gravity, weight and cost

Active Publication Date: 2014-06-04
上海浔猎优包新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned deficiencies and provide a foamed recycled environmentally friendly plastic sheet and its preparation method, which reduces the proportion of PE.PS recycled sheets and solves the problem of excessive specific gravity of traditional PS recycled sheets. Greatly reduce the cost and reduce the pollution of plastic to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0020] A method for preparing a foamed regenerated environmentally friendly plastic sheet, comprising the following steps:

[0021] 1) Mix the raw materials of the PS base material layer and the raw materials of the foaming layer in proportion, and stir evenly. The mixing time is 20-100 minutes. Among them, the raw materials of the PS base material layer are calculated by weight percentage: PS75-99%, Strengthening agent 1-25%, the raw materials of the foaming layer are calculated by weight percentage: PS60-90%, foaming agent 0.1-20%, reinforcing agent 1-25%, the foaming agent should be dried before mixing and mixed with The longer the stirring time, the more uniform the mixing and the better the stabilizing effect;

[0022] 2) Then enter the multi-layer co-extrusion equipment through the independent feeding equipment, such as double-layer, three-layer or five-layer co-extrusion equipment, extrude the PS base material layer and the foaming raw material layer, enter the twin-scr...

experiment example 2

[0026] A method for preparing a foamed regenerated environmentally friendly plastic sheet, comprising the following steps:

[0027] 1) Mix the raw materials of the PS base material layer and the raw materials of the foaming layer in proportion, and stir them evenly. The stirring and mixing time is 20-100 minutes. Among them, the raw materials of the PS base material layer are calculated by weight percentage: PS75-90%, PE5-20%, reinforcing agent 1-20%, the raw materials of the foam layer are calculated by weight percentage: PS60-75%, PE5-25%, foaming agent 0.1-20%, reinforcing agent 1-25%, should be mixed before mixing Dry the foaming agent and use it as you prepare it. The longer the stirring time, the more uniform the mixing and the better the stabilizing effect;

[0028] 2) Then enter the multi-layer co-extrusion equipment through the independent feeding equipment, such as double-layer, three-layer or five-layer co-extrusion equipment, extrude the PS base material layer and ...

experiment example 3

[0032] A method for preparing a foamed regenerated environmentally friendly plastic sheet, comprising the following steps:

[0033] 1) Mix the raw materials of the PS base material layer and the raw materials of the foaming layer in proportion, and stir evenly. The mixing time is 20-100 minutes. Among them, the raw materials of the PS base material layer are calculated by weight percentage: PS75-99%, Strengthening agent 1-25%, the raw materials of the foaming layer are calculated by weight percentage: PS60-90%, foaming agent 0.1-20%, reinforcing agent 1-25%, toner 0.1-8%, the foaming layer should be mixed before mixing The agent is dry and ready to use, the longer the stirring time, the more uniform the mixing, and the better the stabilizing effect;

[0034] 2) Then enter the multi-layer co-extrusion equipment through the independent feeding equipment, such as double-layer, three-layer or five-layer co-extrusion equipment, extrude the PS base material layer and the foaming raw...

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PUM

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Abstract

The invention relates to a foaming regeneration environment-friendly plastic sheet. The foaming regeneration environment-friendly plastic sheet comprises a PS base material layer and a foaming layer, wherein the PS base material layer comprises the following raw materials in percentage by weight: 75%-90% of PS, 5%-20% of PE and 1%-20% of a reinforcing agent; the foaming layer comprises the following raw materials in percentage by weight: 60%-70% of PS, 5%-20% of PE, 0.1%-20% of a foaming agent, 1%-10% of a reinforcing agent and 0.1%-8% of toner. A preparation method of the foaming regeneration environment-friendly plastic sheet comprises the following steps: (1) mixing the raw materials of the PS base material layer and the raw materials of the foaming layer in the ratio, and uniformly stirring; (2) feeding the raw materials into co-extrusion equipment through feeding equipment, extruding the PS base material layer and a foaming raw material layer, heating for forming in a double screw extruder, and simultaneously carrying out flow thermal compounding on the foaming layer and the PS base material layer at a joint of extruder screws to discharge sheets with uniform thickness, wherein the foaming raw material layer is foamed to obtain the foaming layer; and (3) drawing the PS base material layer and foaming layer composite sheets to a three-roller cooler for regulating flatness of the sheets, and trimming, forming and rolling through a tractor so as to obtain the finished product. The foaming regeneration environment-friendly plastic sheet provided by the invention has the advantages that the problem that the specific gravity of a traditional PS regeneration sheet is too large is solved, the cost is greatly reduced, and the environment pollution caused by plastics is alleviated.

Description

[technical field] [0001] The invention relates to the technical field of plastic sheets, in particular to a foamed recycled environmentally friendly plastic sheet and a preparation method. [Background technique] [0002] PS sheet is an environmentally friendly packaging material developed in recent years. It has good thermoforming performance, impact resistance, environmental protection performance and hygienic performance. It is widely used in blister packaging products such as medicine, food, toys and electronics. Among them, PS recycled sheet material recycles and reuses plastics to a large extent, reducing the pollution of plastics to the environment. But at present, according to the traditional production process of PS recycled sheet, its proportion is very heavy, resulting in the disadvantage of high cost. [Content of the invention] [0003] The purpose of the present invention is to solve the above-mentioned deficiencies and provide a foamed recycled environmentall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/30B32B27/32B32B37/00B32B5/18C08L25/06C08L23/06C08J9/04C08J9/08
Inventor 罗景明李凤平
Owner 上海浔猎优包新材料科技有限公司
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