Title:
NONWOVEN FABRIC BEING WATER SOLUBLE AT LOW TEMPERATURE AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JP3426703
Kind Code:
B2
Abstract:
PURPOSE: To obtain a nonwoven fabric being water soluble at a low temperature, having thermally bonding property and heat sealing property and suitable as a hygienic material, a medical material, etc., by using a polyvinyl alcohol- based fiber being water-soluble at a low temperature, having a specific melting point.
CONSTITUTION: A polyvinyl alcohol-based fiber which is water-soluble at a low temperature, having 170-220°C melting point is carded to form a web and subjected to thermal pressing treatment at a temperature which is 20-150°C lower than the melting point under 3-100 kg/cm linear pressure to provide the objective nonwoven fabric being water-soluble at a low temperature, in which the water-soluble polyvinyl alcohol-based fiber existing in 3-50% area part of the surface is formed so as to have flat cross sections having 3-30 flat ratio and the tear length is 0.5-5km and a temperature at which it is dissolved in water is 0-40°C.
Inventors:
Akio Ohmori
Masahiro Sato
Satoru Kobayashi
Shunpei Naramura
Tomoyuki Sano
Masahiro Sato
Satoru Kobayashi
Shunpei Naramura
Tomoyuki Sano
Application Number:
JP13039194A
Publication Date:
July 14, 2003
Filing Date:
June 13, 1994
Export Citation:
Assignee:
KURARAY CO.,LTD.
International Classes:
A61F13/15; A61F13/49; A61F13/551; D01F6/14; D04H1/4309; D04H1/545; (IPC1-7): D04H1/42; D04H1/54
Domestic Patent References:
| JP2191799A | ||||
| JP49117224A | ||||
| JP566088U | ||||
| JP540055B2 |