Seam tape and methods of manufacture and use thereof
AssigneeCelgard, LLC
InventorsKarl F. Humiston, Kristoffer K. Stokes, Perry K. Hancock
Life of this patent
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Abstract
Provided herein are seam tapes and related methods. The seam tapes can be compatible with polyolefin-based waterproof/breathable (w/b) membranes, including polypropylene (PP) w/b membranes and/or polyethylene (PE) w/b membranes. Also provided are seams sealed by means of these seam tapes, as well as materials, fabrics, and garments including one or more of these sealed seams.
Claims39
A seam tape adapted to prevent water leakage through holes made by a needle in a seam during stitching, comprising:
- a microporous, dry-stretched, polyolefin film including a plurality of pores, wherein
- the microporous, dry-stretched, polyolefin film comprises a polymer selected from the group consisting of impact copolymer polypropylenes, metallocene polyethylenes, and polypropylene polyethylene block copolymers;
- an adhesive disposed on one side of the microporous, dry-stretched, polyolefin film;
- and wherein the microporous, dry-stretched, polyolefin film has a porosity of from 20% to 80%.
A seam tape comprising:
- a microporous, dry-stretched, polyolefin film including a plurality of pores, wherein the microporous, dry-stretched, polyolefin film has a JIS Gurley of 100 seconds or less;
- and
- an adhesive disposed on one side of the microporous, dry-stretched, polyolefin film, and wherein the microporous, dry-stretched, polyolefin film has a porosity of from 40% to 90%, a JIS Gurley of less than 100, a mean flow pore diameter of at least 0.04 microns, and an Aquapore size of at least 0.06 microns.
A seam tape adapted to prevent water leakage through holes made by a needle in a seam during stitching, comprising:
- a microporous, dry-stretched, polyolefin film including a plurality of pores having a substantially round shape, wherein the microporous, dry-stretched, polyolefin film has a melt temperature from 80° C. to 175° C.;
- and
- an adhesive disposed on one side of the microporous, dry-stretched, polyolefin film, wherein the adhesive comprises one or more polyolefins;
- and
- wherein the plurality of pores have an average pore size of from 0.03 microns to 0.50 microns;
- and wherein the microporous, dry-stretched, polyolefin film has a porosity of from 20% to 80% and a TD tensile strength of at least 175 kg/cm2.
Dependencies are inferred from the claim text.