A breathable film suitable for absorbent articles with electromagnetic shielding function and its preparation method

Abstract

The invention discloses a gas-permeable film with electromagnetic shielding function suitable for absorbent articles and a preparation method thereof. The breathable membrane is made of the following raw materials in parts by weight: 28-72 parts of polyolefin, 36-52 parts of modified calcium carbonate powder after surface treatment, 2-2 parts of conductive metal powder and / or non-metallic powder 10 parts; Among them, the modified calcium carbonate powder refers to the calcium carbonate powder and the surface treatment agent stirred at 60-130°C for 5-20 minutes. The breathable membrane has electromagnetic shielding performance, exhibits good mechanical properties and physical and mechanical properties, has good air permeability and water resistance, has good flexibility of membrane materials, and has excellent softness to the touch. It meets the requirements of environmental protection and hygiene, and fills the domestic waterproof and breathable membrane The gap in the production of non-magnetic shielding diaper bottom film solves the problems of urine leakage, red and swollen buttocks and electromagnetic wave radiation when babies wear diapers, and the preparation method is simple and easy for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of sanitary absorbent articles. More specifically, it relates to a breathable film with electromagnetic shielding function suitable for absorbent articles and a preparation method thereof. Background technique [0002] Today, with the high development of electrification, household appliances such as mobile phones, walkie-talkies, TVs, computers, electric blankets, and microwave ovens, which are closely related to people's daily life, have entered thousands of households one after another, bringing great convenience to people's study and life. However, during the use of household appliances and electronic equipment, electromagnetic waves of different wavelengths and frequencies will be generated to varying degrees. These electromagnetic waves are colorless, odorless, invisible, intangible, strong penetrating power, and fill the entire space. Electromagnetic radiation has become one of the pathogenic sources ...

AI Technical Summary

Problems solved by technology

[0004] At present, many electromagnetic shielding materials on the market are made by metal plating, coating, pasting or blending conductive fibers on the surface of the material. Many problems are prone to occur in the process of preparation and use, such as poor bonding ability between metal and material, and easy to fall off. , the coating is easily scratched, the shielding performance is lost, the preparation process is seriously polluted, etc., and the material is relatively rough, poor in flexibility, airtight, poor in touch, not wearable, and it is difficult to meet the requirements of modern hygienic absorbent materials. Therefore, there is an urgent need to develop a bottom film material for absorbent articles that has electromagnetic shielding performance, good flexibility, light weight, good air permeability and waterproof

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