Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PROCESS FOR PRODUCTION OF POLYAMIDE RESIN PELLET FOR PRODUCTION OF FILM AND POLYAMIDE RESIN FILM USING THE SAME
Document Type and Number:
Japanese Patent JP2007185950
Kind Code:
A
Abstract:

To provide a process for production of polyamide resin pellets for the production of films which give polyamide resin films improved in surface appearance by using a technique other than adding a compound and without impairing the heat resistance, slipperiness, or transparency which are the important properties as a film.

The process for production of polyamide resin pellets for the production of films, characterized by extruding a polyamide resin obtained by melt polycondensation into strands, cooling and solidifying the strands, cutting them with a rotary cutter, and separating fines contained therein and having the fines content of the pellets to 20 ppm by weight or below. The polyamide resin can give polyamide resin films which are suppressed in the occurrence of fishing eyes and thereby improved in surface appearance without adding a compound and without impairing the heat resistance, slipperiness, or transparency and which have higher commercial value. Furthermore, the polyamide resin is expected to bring about higher productivity in producing films by a recent molding process involving a high flow rate, a high extruder rate, and an extruder cylinder temperature exceeding 250°C, thus having great industrial value.


Inventors:
Miyamoto, Masaaki
Hamano, Toshiyuki
Hitomi, Tatsuya
Nishida, Yuichi
Application Number:
JP2006000331403
Publication Date:
July 26, 2007
Filing Date:
December 08, 2006
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI CHEMICALS CORP
International Classes:
B29B9/06; B29B9/16; B29B13/10; C08G69/04; C08G69/46; B29K77/00