Breathable, leakage-proof and biodegradable polylactic acid-containing sanitary napkin substrate membrane capable of removing odor, and preparation method of sanitary napkin substrate membrane

Abstract

The invention discloses a breathable, leakage-proof and biodegradable polylactic acid-containing sanitary napkin substrate membrane capable of removing odor, being prepared from the following raw materials in parts by weight: 85-100 parts of polylactic acid, 45-65 parts of starch, 2-5 parts of bamboo leaf extract, 3-6 parts of shaddock peel extract, 5-10 parts of aloe extract, 2-6 parts of ADRE-4860 chain extender, 2-8 parts of citrate and 1-5 parts of polyethylene glycol. The invention also discloses a method for preparing the sanitary napkin substrate membrane. The breathable, leakage-proof and biodegradable polylactic acid-containing sanitary napkin substrate membrane capable of removing odor and the preparation method of the sanitary napkin substrate membrane are not only capable of realizing full biodegradation of materials, but also can reduce the cost, so that the dependence on non-renewable petrochemical resources is reduced, waste is avoided and the sanitary napkin substrate membrane has a great significance.

Description

technical field [0001] The invention relates to the field of disposable sanitary products, in particular to a deodorizing breathable anti-seepage degradable polylactic acid sanitary napkin base film and a preparation method thereof. Background technique [0002] The surface of conventional sanitary napkins is covered with polypropylene non-woven fabric, and the breathable and anti-seepage bottom film is polyethylene film, which is not suitable for degradation. This is a major obstacle to the sustainable development of disposable sanitary materials. Every day, 0.5 tons of sanitary napkins in the world become landfill waste. Once these sanitary napkins are buried in the ground, they can almost never be decomposed. 20% of the ingredients in sanitary napkins are basically plastic. Even if they are exposed to the air and allowed to degrade naturally, the whole process will take about 300 years. [0003] If sanitary napkins want to continue to survive and develop in the low-carbo...

AI Technical Summary

Problems solved by technology

In today's increasingly prominent energy crisis, continuing to use starch-filled polyolefin materials to manufacture disposable sanitary material base films will waste a large amount of limited petroleum resources, which is neither economical nor environmentally friendly; moreover, the use of sanitary napkins It will cause bacteria or odor, and cause human discomfort. Therefore, it has become an urgent need for the current society to find a new renewable material to replace the traditional polyolefin resin to manufacture degradable disposable products.