Method for forming a composite elastic material
AssigneeThe Procter & Gamble Company
InventorsGeorge C. Dobrin, Karen M. Davis
Life of this patent
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Abstract
A method for forming a composite elastic material. An elastic member having at least one elastic strand is fed onto a rotating forming structure exhibiting a multiplicity of apertures therein. The elastic member has a surface facing the forming structure and another surface facing away from the forming structure. A thermoplastic film is extruded onto the surface of the elastic member facing away from the forming structure. A pneumatic vacuum is applied to the thermoplastic film and the elastic member so that the thermoplastic film is simultaneously apertured and bonded to the elastic member thereby forming a breathable composite elastic material.
Claims20
A method for forming a composite elastic material, said method comprising the steps of:
- a) feeding an elastic member comprising at least one elastic strand onto a rotating forming structure exhibiting a multiplicity of apertures therein, said elastic member having a surface facing said forming structure and a surface facing away from said forming structure;
- b) extruding a thermoplastic film onto the surface of the elastic member facing away from the forming structure;
- and
- c) applying a pneumatic vacuum to the thermoplastic film and the elastic member so that the thermoplastic film is simultaneously apertured and bonded to the elastic member while still on said forming structure.
A method for forming a composite elastic material, said method comprising the steps of:
- a) feeding an elastic member comprising at least one elastic strand onto a rotating forming structure exhibiting a multiplicity of apertures therein, said elastic member having a surface facing said forming structure and a surface facing away from said forming structure;
- b) extruding a thermoplastic film onto the surface of the elastic member facing away from the forming structure;
- and
- c) simultaneously aperturing the thermoplastic film and bonding the thermoplastic film to the elastic member while still on said forming structure.
Dependencies are inferred from the claim text.