SYNTHETIC CROSSTIE AND PROCESS FOR PRODUCING THE SAME

WIPO Patent Application WO/2007/113896

A1

A synthetic crosstie that not only realizes substantially the same degree of uniform glass fiber distribution as in the production by means of a pultruder but also suppresses an increase of production cost and enables easy production near demand sites; and a process for producing the synthetic crosstie. In base material (18) of synthetic crosstie body (17) constituted of a urethane resin material as a synthetic resin material, there are disposed fiber bundles (20) composed of multiple glass fibers (21 ) rodlike retained in advance by means of retention material (19) constituted of substantially the same urethane resin material as that constituting the base material (18). The urethane resin material of the base material (18) and the urethane resin material of the retention material (19) are foamed. The foaming ratio of the urethane resin material of the retention material (19) is set so as to be higher than that of the urethane resin material of the base material (18) so that after foaming and curing, the glass fibers (21 ) protrude from the region of the retention material (19).

MOTOI KOJI (JP)
ISHIJIMA YUUJI (JP)

PCT/JP2006/307034

October 11, 2007

April 03, 2006

Click for automatic bibliography generation  

SEKISUI CHEMICAL CO LTD (JP)
MOTOI KOJI (JP)
ISHIJIMA YUUJI (JP)

E01B3/44; B29C39/10; B29C69/02; B29C70/52; C08J5/08

JP2002294603A	2002-10-09
JP2005271209A	2005-10-06
JPS4836420B1	1973-11-05
JPH11216737A	1999-08-10

NISHIWAKI, Tamio (6-7, Ginza 6-chome, Chuo-ku Tokyo 61, JP)

View/Download PDF      PDF Help

Previous Patent: OPTICAL MEASUREMENT INSTRUMENT FOR TRACE LIQUID SAMPLE

Next Patent: ESCALATOR STEP AND ESCALATOR WITH THE SAME