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US 8,465,609 B2Granted
Process for welding of two polyamide parts
AssigneeDsm IP Assets B.V.
InventorsWilhelmus Josephus Maria Sour, Antonius Maria Vet
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Abstract
The invention relates to a plastic body comprising two polyamide parts welded together, wherein the two polyamide parts consist of a polyamide composition at least one which comprises an iron containing additive. The invention also relates to a welding process for making the plastic body by welding two polyamide parts at least one of which consists of a polyamide composition comprising an iron containing additive.
Claims16
A process for welding two polyamide parts comprising:
- forming a welded joint between the two polyamide parts, wherein
- each of the two polyamide parts consists of a polyamide composition comprising a blend of a first polyamide consisting of a semicrystalline polyamide having a melting point of at least 260° C. and a second polyamide consisting of either a polyamide having a melting point of less than 260° C. or an amorphous polyamide having a glass transition temperature of less than 260° C., and optionally additives, and wherein
- at least one of the two polyamide parts consists of a polyamide composition comprising an iron containing additive in an amount sufficient to increase strength of the welded joint and/or improve retention of the welded joint at elevated temperature.
Dependencies are inferred from the claim text.