Breathable film having electromagnetic shielding function and applicable to absorption articles and preparation method of breathable film

Abstract

The invention discloses a breathable film having an electromagnetic shielding function and applicable to absorption articles and a preparation method of the breathable film. The breathable film is prepared from raw materials in parts by weight as follows: 28-72 parts of polyolefin, 36-52 parts of surface treated modified calcium carbonate powder and 2-10 parts of conductive metal powder and/or non-metal powder, wherein the modified calcium carbonate powder is obtained by stirring calcium carbonate powder and a surfactant at the temperature of 60-130 DEG C for 5-20 min. The breathable film hasthe electromagnetic shielding function, has better mechanical property and physical and mechanical properties, good breathability and water resistance, good softness and excellent hand feeling and softness, meets all requirements for environmental protection sanitation and fills up the blank of production of waterproof and breathable electromagnetic shielding diaper basement films in china, and the problems of urine leakage, red and swelling buttocks and electromagnetic radiation when a baby wears diaper are solved; the preparation method is simple and large-scale production is easy to realize.

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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