Biodegradable disposable diaper
AssigneeShowa Highpolymer Co., Ltd.
InventorsTakeshi Takahashi, Shigenori Terazono, Takashi Fujimaki, Eiichiro Takiyama
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Abstract
A biodegradable disposable diaper comprising a combination of a liquid absorbing material, a liquid permeable surface material and an leakproof backing material, said liquid permeable material being formed of an aliphatic polyester resin obtained by reacting an aliphatic saturated polyester prepolymer having an end group which is materially a hydroxyl group with a coupling agent or formed of said aliphatic polyester resin and an aliphatic saturated polyester resin which has not been treated by said coupling agent. The disposable diaper has excellent mechanical strength, softness, feel of touch, productivity as well as biodegradability, air permeability and waterproofness.
Claims4
A biodegradable disposable diaper comprising, in order, a liquid permeable surface material, a liquid absorbing material, and a leakproof backing material,
- wherein said liquid permeable surface material is attached to said liquid absorbing material, and said liquid absorbing material is attached to said leakproof backing material,
- wherein said liquid permeable surface material and said leakproof backing material are
- (1) formed of an aliphatic polyester resin obtained by reacting an aliphatic saturated polyester prepolymer having an end group which is a hydroxyl group with a coupling agent or
- (2) formed of
- (A) an aliphatic polyester resin obtained by reacting an aliphatic saturated polyester prepolymer having an end group which is a hydroxyl group with a coupling agent and
- (B) an aliphatic saturated polyester resin which has not been treated by said coupling agent,
- wherein the leakproof backing material is made from less coupling agent than the liquid permeable surface material.
Dependencies are inferred from the claim text.