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Skin-friendly extremely-thin high-permeability zero-leakage bottom film

A highly breathable and extremely thin technology, applied in the field of film, can solve the problems of large leakage, low air flow, and difficulty in achieving high breathability and zero leakage

Pending Publication Date: 2019-08-02
FOSHAN HUAHAN SANITARY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional breathable membranes for diapers are mostly formed by a low-multiple single-stage stretching process, with low air flow and large leakage, making it difficult to meet the requirements of high air permeability and zero leakage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A skin-friendly, extremely thin, highly breathable and zero-leakage bottom film, which is composed of the following raw materials in weight percentages:

[0025] Nanoscale heavy CaCO 3 40%, metallocene polyolefin mLLDPE 12%, and the rest is low density polyethylene.

[0026] The preparation method of the bottom film comprises the following steps:

[0027] (1) Mixing of ingredients: take nano-scale heavy CaCO 3 , metallocene polyolefin mLLDPE and polyethylene are mixed, sent to the mixer, and stirred evenly;

[0028] (2) Dehumidification and drying: the mixture is placed in a dehumidification dryer for drying, and the drying temperature is set to 90°C;

[0029] (3) Melt extrusion: The dried particles are placed in a screw extruder for melt extrusion. During this period, an 800-mesh emery and a large casting rubber roller with excellent cooling effect are used, and appropriate cooling water temperature and pressure are used. , so that the high temperature molten mate...

Embodiment 2

[0035] A skin-friendly, extremely thin, highly breathable and zero-leakage bottom film, which is composed of the following raw materials in weight percentages:

[0036] Nanoscale heavy CaCO 3 50%, metallocene polyolefin mLLDPE 15%, and the rest is low density polyethylene.

[0037] The preparation method of the bottom film comprises the following steps:

[0038] (1) Mixing of ingredients: take nano-scale heavy CaCO 3 , metallocene polyolefin mLLDPE and polyethylene are mixed, sent to the mixer, and stirred evenly;

[0039] (2) Dehumidification and drying: the mixture is placed in a dehumidification dryer for drying, and the drying temperature is set to 85°C;

[0040] (3) Melt extrusion: The dried particles are placed in a screw extruder for melt extrusion. During this period, an 800-mesh emery and a large casting rubber roller with excellent cooling effect are used, and appropriate cooling water temperature and pressure are used. , so that the high temperature molten mate...

Embodiment 3

[0046] A skin-friendly, extremely thin, highly breathable and zero-leakage bottom film, which is composed of the following raw materials in weight percentages:

[0047] Nanoscale heavy CaCO 3 30%, metallocene polyolefin mLLDPE 10%, and the rest is low density polyethylene.

[0048] The preparation method of the bottom film comprises the following steps:

[0049] (1) Mixing of ingredients: take nano-scale heavy CaCO 3 , metallocene polyolefin mLLDPE and polyethylene are mixed, sent to the mixer, and stirred evenly;

[0050] (2) Dehumidification and drying: the mixture is placed in a dehumidification dryer for drying, and the drying temperature is set to 100°C;

[0051] (3) Melt extrusion: The dried particles are placed in a screw extruder for melt extrusion. During the process, an 800-mesh emery and a large casting rubber roller with excellent cooling effect are used, and the appropriate cooling water temperature and pressure are used. , so that the high temperature molten...

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PUM

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Abstract

The invention discloses a skin-friendly extremely-thin high-permeability zero-leakage bottom film. The skin-friendly extremely-thin high-permeability zero-leakage bottom film consists of the followingraw materials in percentages by weight: 30-50% of nano-scale heavy CaCO3, 10-15% of metallocene polyolefin mLLDPE and the balance of low-density polyethylene. A high-multiple multi-stage distributionand stretching technology is adopted, so that the stress of the product in the longitudinal direction is uniform, meanwhile, the air permeability of the film is improved, the formed apertures are uniform and consistent, and the characteristic of zero leakage of the product is guaranteed.

Description

technical field [0001] The invention relates to the field of films, in particular to a skin-friendly, extremely thin, highly breathable and zero-leakage bottom film. Background technique [0002] At present, 50% calcium carbonate filled PE is widely used as the base material of domestic diaper film to make the film have a breathable function. This kind of film has problems such as unbalanced ventilation, low air permeability, and easy leakage; [0003] The breathable film produced by the traditional casting large rubber roller has problems such as hard hand feeling and gram weight; [0004] The traditional breathable film for diapers is mostly formed by low-multiple single-stage stretching process, which has low air permeability and large leakage, and it is difficult to achieve the requirements of high air permeability and zero leakage. SUMMARY OF THE INVENTION [0005] The purpose of the present invention is to provide a skin-friendly, extremely thin, highly breathable a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K3/26C08J5/18
CPCC08J5/18C08J2323/06C08J2423/08C08K2003/265
Inventor 李伟佳冯小芬冯卓滨周展钱罗广文
Owner FOSHAN HUAHAN SANITARY MATERIAL
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