Polyethylene membrane

A polyethylene film and polyolefin technology, applied in the field of polymer materials, can solve the problems of the specific gravity of the finished film and the decline of key physical properties.

Inactive Publication Date: 2009-07-01
SHANGHAI RUNLONG PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a lightweight polyethylene film to solve the problem that the specific gravity and key physical properties of the finished film decrease as the amount of filler added increases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of polyethylene film composite masterbatch

[0032] Prepare the following ingredients:

[0033] Talc powder 100Kg; HDPE 5Kg; maleic anhydride grafted PE 1Kg; stearic acid 5Kg; palm oil 6Kg; white oil 2Kg; aluminate coupling agent 3Kg; DCP dicumyl peroxide 0.1Kg.

[0034] After the above raw materials are kneaded, mixed and granulated, a polyethylene film composite masterbatch is obtained.

Embodiment 2

[0036] A kind of polyethylene film composite masterbatch

[0037] Prepare the following ingredients:

[0038] Talc powder 80Kg; HDPE 25Kg; maleic anhydride grafted PE 0.8Kg; stearic acid 4Kg; palm oil 5Kg; oil 1Kg; aluminate coupling agent 3Kg; DCP dicumyl peroxide 0.08Kg.

[0039] After the above raw materials are kneaded, mixed and granulated, a polyethylene film composite masterbatch is obtained.

Embodiment 3

[0041] A kind of polyethylene film composite masterbatch

[0042] Prepare the following ingredients:

[0043] Talc powder 90Kg; HDPE 15Kg; maleic anhydride grafted PE 0.9Kg; stearic acid 4.5Kg; palm oil 4.5Kg; white oil 1.25Kg; aluminate coupling agent 3.5Kg; DCP dicumyl peroxide 0.09Kg .

[0044] After the above raw materials are kneaded, mixed and granulated, a polyethylene film composite masterbatch is obtained.

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Abstract

The invention relates to the technical field of high molecular material, in particular to a light weight polyethylene film. In order to solve the technical problem, the invention discloses the light weight polyethylene film which is prepared through the following raw materials by weight portion: 2 to 50 portions of polyethylene film composite parent material, and 50 to 98 portions of polyethylene, wherein the polyethylene film composite parent material is prepared through the following raw materials by weight portion: 80 to 100 portions of filler, 5 to 25 portions of polyolefin, 10 to 15 portions of poly-modifier, 11 to 15 portions of fatty acid, 2 to 8 portions of mineral oil, 2 to 3 portions of coupling agent, and 0.1 to 0.08 portions of crosslinking agent. The specific gravity of the light weight polyethylene film is between 0.8 and 0.95g / cm. The key physical properties of the light weight polyethylene film are not reduced while the cost of the finished product film is reduced simultaneously. The fracture elongation rate is more than or equal to 150 percent; the tensile property is more than or equal to 25MPa; and the thermal sealing strength is more than or equal to 6.0.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a lightweight polyethylene film. Background technique [0002] Polyethylene is divided into high density (HDPE, density is 0.941g / cm 3 , or higher), medium density (MDPE, density is 0.926—0.940g / cm 3 ), low density (LDPE, density is 0.910—0.925g / cm 3 ), and linear low-density polyethylene (LLDPE, density is 0.910-0.925g / cm 3 ). See ASTM D4976-98: Standard Specification for Polyethylene Plastic Molding and Extrusion Materials. [0003] One of the many major uses of polyethylene (HDPE, LLDPE and LDPE) is film applications such as food bags, linings of cans for catering or consumer goods, shopping bags, shipping bags, food packaging films, multi-wall bag liners, product bags, deli wraps, stretch wrap and shrink wrap. Key physical properties of polyethylene films include tear strength, impact strength, tensile properties, stiffness and clarity. [0004] Chinese inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08J5/18C08K3/34
Inventor 汪世杰
Owner SHANGHAI RUNLONG PACKING
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