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Title:
POROUS POLY(VINYL ACETAL) OBJECT AND NONWOVEN POLY(VINYL ACETAL) FABRIC
Document Type and Number:
WIPO Patent Application WO/2018/016536
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a porous poly(vinyl acetal) object and nonwoven poly(vinyl acetal) fabric which are able to exhibit extremely high impact absorption. The present invention relates to a porous poly(vinyl acetal) object which comprises a poly(vinyl acetal) and a plasticizer and has a large number of cells. The porous object has a porosity regarding open cells of 10% or higher. When a sample of the porous object having a length of 10 cm, a width of 10 cm, and a thickness of 4 mm is placed on an iron plate having a length of 10 cm or larger, a width of 10 cm or larger, and a thickness of 1 cm and a 1/2-inch SUS ball according to JIS B 1501 is dropped from a certain drop height toward the center of the sample of the porous object to measure the rebound height, then the rebound coefficient [(ball rebound height)/drop height]] is 0.1 or less.

Inventors:
TAKAHASHI, Katsunori (1259, Izumi, Minakuchicho, Koka-sh, Shiga 85, 〒5288585, JP)
Application Number:
JP2017/026137
Publication Date:
January 25, 2018
Filing Date:
July 19, 2017
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO., LTD. (4-4 Nishitemma 2-chome, Kita-ku Osaka-sh, Osaka 47, 〒5300047, JP)
International Classes:
C08J9/06; D04H1/4326
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (5-36, Miyahara 3-chome Yodogawa-ku, Osaka-sh, Osaka 03, 〒5320003, JP)
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