Bra pad prepared from PU (polyurethane) flexible adhesive

Abstract

The invention discloses a bra pad prepared from a PU (polyurethane) flexible adhesive. The bra pad is prepared from 93.5-99.2% of polyether-type polyurethane resin (main body material). The main body material comprises 15.8-21.5% of diphenylmethane diisocyanate (MDI) (black material), 75.5-79.8% of polyether glycol (white material), 1.85-2.8% of butanediol (white material), 0.05-0.3% of catalyst (white material) and 0.2-0.45% of cyclopentane physical foaming agent (white material). The polyether-type polyurethane resin, black materials and white materials are proportionally mixed thoroughly to obtain the required PU flexible adhesive. The prepared PU flexible adhesive is injected into a mold with the temperature of 50-55 DEG C and subjected to primary foam forming. The PU flexible adhesive has the skin-like sensation, and the bra pad is subjected to integral forming through the mold, thereby saving abundant human and material resources and enhancing the efficiency.

Description

technical field [0001] The invention relates to the technical field of bra pad production, in particular to a bra pad made of PU soft glue. Background technique [0002] At present, more than 90% of the material of bra pads on the market is sponge. The big problem with pads made of sponge is that they are easily deformed and not durable after washing, and the shape will disappear soon after washing many times. The sponge processing process is complicated, such as cutting, cotton digging, high-temperature shaping, trimming, etc. The labor cost is high, and there are many waste materials, which will also cause environmental pollution around the processing. Since the sponge is molded by high-stability hot ironing, the softness and hardness of the side of the pad and the middle position are very different. It is relatively hard and soft, which affects the comfort and breathability of wearing, and it cannot be complemented at any time according to the characteristics of the human...

AI Technical Summary

Problems solved by technology

[0002] At present, more than 90% of the material of bra pads on the market is sponge. The big problem with pads made of sponge is that they are easily deformed and not durable after washing, and the shape will disappear soon after washing many times.

The sponge processing process is complicated, such as cutting, cotton digging, high-temperature shaping, trimming, etc. The labor cost is high, and there is a lot of waste, which will also cause environmental pollution around the processing

Since the sponge is molded by high-stability hot ironing, the softness and hardness of the side of the pad and the middle position are very different. It is relatively hard and soft, which affects the comfort and breathability of wearing, and it cannot be complemented at any time according to the characteristics of the human body.