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US 2004/0103979 A1Published application
Method of making a composite web
AssigneeReifenhauser GmbH & Co. Maschinenfabrik
InventorWalter Kramer
Life of this patent
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Abstract
A composite is first formed by depositing on a breathable but water-impermeable synthetic resin film, a multiplicity of molten binding polymer threads from a multiplicity of orifices so that there is substantial space between the threads. A second web, e.g. an open-pore structure is then bonded to the first web by the molten thread so that the composite retains the flexibility and softness of the open-pore structure and the breathability of the film.
Claims20
A method of making a composite web comprising the steps of:
- (a) applying to a first web from a multiplicity of nozzle orifices a multiplicity of thread-shaped strands of a molten bonding polymer and bonding said strands to said first web in a pattern leaving bonding-polymer-free regions on said first web;
- and
- (b) applying a second web to the strands of molten bonding polymer and bonding said second web to said strands, one of said first and second webs being a foil and the other of said first and second webs having an open-pore structure.
Dependencies are inferred from the claim text.