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US 7,441,312 B2Granted
Sealing slide fastener with teeth welded onto the tapes which they join
AssigneeRIRI Group S.A.
InventorSergio Bernasconi
Life of this patent
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Abstract
A description is given of a sealing slide fastener (10), comprising two tapes (1, 2) of elastic material with their edges (1b, 2b) facing each other, which are pressed against each other by the coupling of two sets of aligned teeth (3, 4) caused by the passage of a closing slider (8), in which at least the outer layers (1e, 2e) of the said two tapes (1, 2) and the said teeth (3, 4) are made from materials which can be welded together chemically.
Claims9
A sealing slide fastener (10), comprising:
- a closing slider (8);
- two tapes (1, 2) of elastic material having respective edges (1b, 2b) facing each other, each of said two tapes carrying a respective set of injection molded teeth (3, 4), said edges being pressed against each other by coupling of said sets of teeth caused by passage of said closing slider;
- each of said two tapes having two outer layers (1e, 2e) of thermoplastic material and an inner reinforcing layer (7) between said two outer layers;
- and
- each of said teeth having two halves (3a, 3b, 4a, 4b) that are each injection molded directly on a respective one of said outer layers without an intervening adhesive layer and that are chemically welded directly to the respective one of said outer layers without an adhesive.
2 more elements
Dependencies are inferred from the claim text.