The producers of sewing threads used for interior car furnishings have to comply with stringent car industry regulations. In regard to thread color the specific requirements are good color fastness to light at high temperatures and nonmetameric recipe match prediction. The use of selected 1:2 metal complex dyes is recommended for the dying of PA sewing threads. Eight dyes were tested and their dyeing properties and light fastness were evaluated in an attempt to find appropriate dyes marked by high light fastness. The light fastness of dyed samples was tested according to the standard ISO 105-B06 which specifies severe testing conditions as they appear in car interiors duing summertime and cause photo-degradation of non-fast dyes. Suitable 1:2 metallic complex dyes were selected and used for computer recipe prediction for the dying of PA 6.6 sewing threads for the car industry based on the results of experimental work.

Date Published: 6 June 2002
PDF: 4 pages
Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); doi: 10.1117/12.464733

Published in SPIE Proceedings Vol. 4421:
9th Congress of the International Colour Association
Robert Chung; Allan Rodrigues, Editor(s)