Product and process for strip lamination of a polymer film and nonwoven webs
AssigneeClopay Plastic Products Company, Inc.
InventorsRobert M. Mortellite, Thomas Mushaben, Kevin Preston
Life of this patent
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Abstract
A product, apparatus and process for lamination of a sheet of polymer film onto a sheet of light weight web material. An incoming sheet of material is slit into narrow webs, which may be folded by a folding guide, and separated by use of turning bars and guides. The narrow webs then enter an embossing or laminating station. The lamination process joins the two sheets which are of different widths to allow the process to produce stock for different final products. The laminate of folded webs and polymer may be slit and/or unfolded prior to being stored on a take-up reel.
Claims49
A process for in-line lamination of a first nonwoven fibrous sheet to an extruded polymer film, comprising:
- slitting a nonwoven fibrous sheet to form a plurality of nonwoven fibrous webs;
- spacing the webs by turning said webs around a plurality of spaced web turning bars positioned at an oblique angle to incoming webs;
- folding each 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 webs, wherein a portion of said extruded polymer film extends between the spaced webs.
A process for in-line lamination of a nonwoven fibrous sheet to an extruded polymer film, comprising:
- slitting a nonwoven fibrous sheet having a weight from about 5 to about 70 grams/yd2 to form a plurality of nonwoven fibrous webs;
- spacing the webs by turning said webs around a plurality of spaced web turning bars positioned at an oblique angle to incoming 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 webs, wherein a portion of said extruded polymer film extends between the spaced webs.
A process for in-line lamination of a nonwoven fibrous sheet to an extruded polymer film, comprising:
- slitting a nonwoven fibrous sheet to form a plurality of nonwoven fibrous webs;
- spacing the nonwoven fibrous webs by turning said webs around a plurality of spaced web turning bars positioned at an oblique angle to incoming webs;
- and
- laminating an extruded polymer film having a film thickness of from 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 webs, wherein a portion of said extruded polymer film extends between the webs.
Dependencies are inferred from the claim text.