EP 4400638 A1 20240717 - POLYAMIDE-46 MULTIFILAMENT AND SEWING THREAD FOR AIRBAG
Title (en)
POLYAMIDE-46 MULTIFILAMENT AND SEWING THREAD FOR AIRBAG
Title (de)
POLYAMID-46-MULTIFILAMENT UND NÄHGARN FÜR AIRBAG
Title (fr)
MULTIFILAMENT DE POLYAMIDE 46 ET FIL DE COUTURE POUR COUSSIN DE SÉCURITÉ GONFLABLE
Publication
Application
Priority
- JP 2021147430 A 20210910
- JP 2022033826 W 20220909
Abstract (en)
A purpose of the present invention is to provide a polyamide-46 multifilament that has high strength, high-temperature dimensional stability, and excellent stretchability, which have not been attained with any conventional technique, and that is hence suitable for use as a sewing thread for airbags having mechanical properties which can inhibit the sewed portions from suffering an air leakage of a high-temperature high-power gas. The polyamide-46 multifilament has the following physical properties (1) to (3). (1) A strength of 6.0-9.0 cN/dtex and an elongation of 15-30%. (2) A degree of elongation E10(100°C), as measured after stretching 10 times in a 100°C environment, of less than 1.0%. (3) A difference between the elongation under a load of 2.0 cN/dtex at ordinary temperature and the elongation under a load of 2.0 cN/dtex in a 100°C environment of less than 0.5%.
IPC 8 full level
CPC (source: EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4400638 A1 20240717; CN 117693615 A 20240312; JP WO2023038098 A1 20230316; WO 2023038098 A1 20230316
DOCDB simple family (application)
EP 22867419 A 20220909; CN 202280051323 A 20220909; JP 2022033826 W 20220909; JP 2022562282 A 20220909