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Composite plastic sheet and making method thereof

A technology of composite plastics and production methods, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., and can solve problems such as large molding shrinkage, affecting the field of use, and easy warping of products

Active Publication Date: 2016-10-12
丹东鑫马高科技塑料包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the disadvantages of poor cold resistance of polypropylene materials, low temperature brittleness, large molding shrinkage, and easy warping of products, the application field of this material is affected.

Method used

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  • Composite plastic sheet and making method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In this embodiment, a composite plastic sheet 100, such as figure 1 As shown, it includes a first composite layer 110 , a second composite layer 120 and a third composite layer 130 , and the second composite layer 120 is disposed between the first composite layer 110 and the third composite layer 130 . The first composite layer 110 is made of 82 parts by weight of polypropylene, 5 parts of metallocene polyolefin elastomer, 3 parts of polyethylene and 2 parts of color masterbatch. The second composite layer 120 is made of 78 parts by weight of polypropylene, 3 parts of metallocene polyolefin elastomer, 4 parts of polyethylene, 5 parts of filler and 2 parts of color masterbatch. The third composite layer 130 is made of 84 parts by weight of polypropylene, 6 parts of metallocene polyolefin elastomer, 4 parts of polyethylene and 3 parts of color masterbatch.

[0047] Wherein, the filler is formed by uniformly mixing 73 parts by weight of 2000 calcium carbonate and 21 parts...

Embodiment 2

[0055] In the present embodiment, a kind of composite plastic sheet 100, it is also such as figure 1 As shown, it includes a first composite layer 110 , a second composite layer 120 and a third composite layer 130 , and the second composite layer 120 is disposed between the first composite layer 110 and the third composite layer 130 . Both the first composite layer 110 and the third composite layer 130 are made of 85 parts by weight of polypropylene, 6 parts of metallocene polyolefin elastomer, 5 parts of polyethylene and 4 parts of color masterbatch. The second composite layer 120 is made of 80 parts by weight of polypropylene, 4 parts of metallocene polyolefin elastomer, 6 parts of polyethylene, 7 parts of filler and 3 parts of color masterbatch.

[0056] Wherein, the filler is formed by uniformly mixing 75 parts by weight of 2000 calcium carbonate and 24 parts of 1500 mesh starch.

[0057] The thickness ratio of the first composite layer 110 , the second composite layer 12...

Embodiment 3

[0063] In the present embodiment, a kind of composite plastic sheet 100, it is also such as figure 1 As mentioned above, it includes a first composite layer 110 , a second composite layer 120 and a third composite layer 130 , and the second composite layer 120 is disposed between the first composite layer 110 and the third composite layer 130 . Both the first composite layer 110 and the third composite layer 130 are made of 88 parts by weight of polypropylene, 8 parts of metallocene polyolefin elastomer, 6 parts of polyethylene and 5 parts of color masterbatch. The second composite layer 120 is made of 83 parts of polypropylene, 6 parts of metallocene polyolefin elastomer, 7 parts of polyethylene, 9 parts of filler and 5 parts of color masterbatch in parts by weight.

[0064] Wherein, the filler is formed by uniformly mixing 78 parts by weight of 2000 calcium carbonate and 27 parts of 1500 mesh starch.

[0065] The thickness ratio of the first composite layer 110 , the second...

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Abstract

The invention discloses a composite plastic sheet. The composite plastic sheet comprises a first composite layer, a second composite layer and a third composite layer, and the second composite layer is arranged between the first composite layer and the third composite layer. A making method of the composite plastic sheet comprises the steps that first raw materials are mixed to prepare first composite layer resin and third composite layer resin, wherein the first raw materials comprise, by weight, 82-88 parts of polypropylene, 5-8 parts of metallocene polyolefin elastomer, 3-6 parts of polyethylene and 2-5 parts of color masterbatches; second raw materials are mixed to prepare second composite layer resin, wherein the second raw materials comprise, by weight, 78-83 parts of polypropylene, 3-6 parts of metallocene polyolefin elastomer, 4-7 parts of polyethylene, 5-9 parts of filler and 2-5 parts of color masterbatches; the second composite layer resin is arranged between the first composite layer resin and the third composite layer resin, and multi-layer coextrusion is conducted. The plastic sheet which is good in toughness and impact strength is effectively obtained through a simple technological method.

Description

technical field [0001] The invention relates to the technical field of plastic sheets, in particular to a composite plastic sheet and a manufacturing method thereof. Background technique [0002] Polypropylene (PP) has good comprehensive properties, odorless, non-toxic, light weight, high tensile strength, excellent stress crack resistance, elongation, bending fatigue resistance and molding processing , low price and other advantages, it is widely used in the production of food packaging materials, daily products, industrial components, household appliances, containers and other products. However, due to the poor cold resistance of polypropylene materials, low temperature brittleness, large molding shrinkage, and easy warping of products, etc., the application field of this material has been affected. Contents of the invention [0003] The object of the present invention is to provide a composite plastic sheet, which improves the brittleness of the existing polypropylene ...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/32C08L23/12C08L23/08C08L23/06C08L3/02C08K3/26
CPCB32B27/08B32B27/32C08K2201/003C08L23/12C08L2205/02C08L2205/035C08L23/0815C08L23/06C08L3/02C08K2003/265
Inventor 徐平
Owner 丹东鑫马高科技塑料包装有限公司
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