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A kind of biaxially stretched breathable film

A biaxially stretched, breathable film technology, applied to other household appliances, flat products, household appliances, etc., can solve the problems of large vertical and horizontal mechanical properties difference, large thickness of breathable film, low hydrostatic pressure, etc., to achieve vertical and horizontal mechanical properties balance , Small melt index, good film-forming effect

Active Publication Date: 2020-10-30
福建恒安家庭生活用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a biaxially stretched breathable film and its preparation method, which solves the technical problems of large thickness, large difference in vertical and horizontal mechanical properties, and low hydrostatic pressure in the prior art.

Method used

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  • A kind of biaxially stretched breathable film

Examples

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Effect test

Embodiment 1

[0029] The biaxially stretched gas permeable film of this embodiment is made of the following raw materials in parts by weight: 30 parts of polyethylene, 20 parts of superfine calcium carbonate powder, 10 parts of antibacterial masterbatch, 1 part of simethicone rheological agent, 12 parts 3 parts of alkylamine polyoxyethylene ether dispersant.

[0030] Among them, polyethylene has a melt index of 0.1-2g / 10min at a temperature of 190°C and a load of 2.16kg, and a molecular weight distribution of 2-8; polyethylene is a mixture of low-density polyethylene and linear low-density polyethylene at a weight ratio of 1:3.0 to make. Ultrafine calcium carbonate powder is ultrafine calcium carbonate treated with resin acid. The particle size of the ultrafine calcium carbonate powder is 50 microns. The powder purity of the ultrafine calcium carbonate powder is 98.5%, and the whiteness is 96.5%.

[0031] The antibacterial masterbatch is made of the following components by weight: 22 par...

Embodiment 2

[0041] The biaxially stretched gas permeable film of this embodiment is made of the following raw materials in parts by weight: 60 parts of polyethylene, 35 parts of ultrafine calcium carbonate powder, 18 parts of antibacterial masterbatch, 6 parts of polymer polysiloxane rheological agent, 7 parts of stearic monoanhydride dispersant.

[0042] Among them, polyethylene has a melt index of 0.1-2g / 10min and a molecular weight distribution of 2-8 at a temperature of 190°C and a load of 2.16kg. The polyethylene is obtained by mixing low-density polyethylene and linear low-density polyethylene at a weight ratio of 1:3.5. Ultrafine calcium carbonate powder is ultrafine calcium carbonate treated with resin acid. The particle diameter of the ultrafine calcium carbonate powder is 100 microns; the powder purity of the ultrafine calcium carbonate powder is 99.5%, and the whiteness is 98%. The antibacterial masterbatch is made of the following components by weight: 30 parts of phenolic a...

Embodiment 3

[0052] The biaxially stretched gas permeable film of this embodiment is made of the following raw materials in parts by weight: 45 parts of polyethylene, 28 parts of superfine calcium carbonate powder, 14 parts of antibacterial masterbatch, 3 parts of low molecular polyamide resin rheology agent, 5 parts of bisstearamide dispersant.

[0053] Among them, polyethylene has a melt index of 0.1-2g / 10min at a temperature of 190°C and a load of 2.16kg, and a molecular weight distribution of 2-8; polyethylene is a mixture of low-density polyethylene and linear low-density polyethylene at a weight ratio of 1:3.0 into; the ultrafine calcium carbonate powder is the ultrafine calcium carbonate after resin acid treatment; the particle diameter of the ultrafine calcium carbonate powder is 60 microns; the powder purity of the ultrafine calcium carbonate powder is 99%, The whiteness is 97; the antibacterial masterbatch is made of the following components by weight: 26 parts of imidazole antib...

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Abstract

The invention provides a biaxially-stretched breathable film and a production method thereof, and relates to the technical field of polymeric materials. The biaxially-stretched breathable film is produced from polyethylene, ultrafine calcium carbonate powder, an antibacterial master batch, a rheological agent and a dispersant. The method adopts a biaxial stretching technology characterized by carrying out film blowing and transverse stretching firstly and then carrying out longitudinal stretching, so the method has the advantages of simple molding technology, high film forming rate, low cost,wide processing range of the polyethylene resin, conveniently controlled processing conditions, good film forming ability of the resin, and easiness in processing film-formation, and the breathable film produced through matching the raw materials has high strength and good breathability.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a biaxially stretched breathable film and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's consumption level, the penetration rate of various personal hygiene products has become higher and higher; and the product structure and appearance homogeneity of sanitary products have become more and more serious; in recent years, manufacturers of sanitary products are ensuring hygiene While the basic function of the product (that is, no leakage after absorbing liquid), it is also constantly improving the comfort of the product. In terms of improving product comfort, manufacturers mainly use skin-friendly and soft fabrics to reduce skin irritation; use light and thin core structures to improve wearing comfort; use bottom films that can regulate humidity , such as polyolefin microporous breathable film to improve the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06C08L23/00C08K13/06C08K9/04C08K3/26C08K9/12C08J5/18B29D7/01
CPCB29D7/01C08J5/18C08J2323/08C08J2423/06C08K2003/265C08K2201/003C08L23/0815C08L2203/16C08L2205/035C08L2207/066C08L23/06C08L23/00C08K13/06C08K9/04C08K3/26C08K9/12
Inventor 翁文伟苏文庭祝二斌罗梅芳吴晓彪
Owner 福建恒安家庭生活用品有限公司
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