Process for strip lamination of polymer films and nonwoven fibrous webs
AssigneeClopay Plastic Products Company, Inc.
InventorsRobert M. Mortellite, Kevin W. Preston, Thomas G. Mushaben
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Abstract
A process for in-line lamination of a non-oven fibrous sheet to an extruded polymer film. A non-oven fibrous sheet is slit into a plurality of narrow non-oven fibrous webs. The narrow non-oven fibrous webs are spaced by turning the webs around a plurality of spaced webs. An extruded polymer film is laminated onto a surface of the spaced webs to provide a laminate of the extruded polymer film and the spaced narrow webs having a portion of the extruded polymer film between the spaced non-woven fibrous webs.
Claims52
A process for in-line lamination of a nonwoven fibrous sheet to an extruded polymer film by the steps of:
- slitting a nonwoven fibrous sheet to form a plurality of narrow nonwoven fibrous webs;
- spacing the narrow nonwoven fibrous webs by turning said webs around a plurality of spaced web turning bars positioned at an oblique angle to the incoming narrow webs;
- folding each narrow web;
- and
- laminating an extruded polymer film onto a surface of the spaced webs to provide a laminate of the extruded polymer film and the spaced narrow webs having a portion of said extruded polymer film between the spaced nonwoven fibrous webs.
A process for in-line lamination of a nonwoven fibrous sheet to an extruded polymer film by the steps of:
- slitting a nonwoven fibrous sheet having a weight from about 5 to about 70 grams/yd2 to form a plurality of narrow nonwoven fibrous webs;
- spacing the narrow nonwoven fibrous webs by turning said webs around a plurality of spaced web turning bars positioned at an oblique angle to the incoming narrow webs;
- and
- laminating an extruded polymer film onto a surface of the spaced webs to provide a laminate of the extruded polymer film and the spaced narrow webs having a portion of said extruded polymer film between the spaced nonwoven fibrous webs.
A process for in-line lamination of a nonwoven fibrous sheet to an extruded polymer film by the steps of:
- slitting a nonwoven fibrous sheet to form a plurality of narrow nonwoven fibrous webs;
- spacing the narrow nonwoven fibrous webs by turning said webs around a plurality of spaced web turning bars positioned at an oblique angle to the incoming narrow webs;
- and
- laminating an extruded polymer film having a film thickness of about 0.25 to about 10 mils onto a surface of the spaced webs to provide a laminate of the extruded polymer film and the spaced narrow webs having a portion of said extruded polymer film between the spaced nonwoven fibrous webs.
Dependencies are inferred from the claim text.