Room temperature latex printing
AssigneeKimberly-Clark Worldwide, Inc.
InventorsRuth Lisa Levy, Robert Emil Weber
Life of this patent
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Abstract
A fabric substrate comprising thermoplastic polyolefin fibers is printed with a printing composition comprising a room temperature curable latex polymer, a pigment and a cure promoter, which retains a colorfastness above 3 when exposed to liquids with a pH between about 2 and about 13. The mixture may be applied to the fabric as an aqueous mixture with a pre-cure pH adjusted to above 8 using a fugitive alkali and then cured at room temperature.
Claims24
A printed substrate formed by the process comprising:
- forming a printing composition comprising an aqueous mixture having a pre-cure pH adjusted to above 8 using a fugitive alkali, a room temperature crosslinkable latex polymer, a pigment, and a cure promoter;
- applying said printing composition to a substrate wherein said substrate comprises a nonwoven web of thermoplastic polyolefin polymer fibers;
- and
- lowering the pH of said printing composition wherein crosslinking occurs forming said printing and wherein said printing adheres to said nonwoven web substrate and retains a colorfastness above 3 when measured by AATCC test method 8 using 30 strokes when exposed to liquids with a pH between about 2 and about 13.
A printed substrate comprising a nonwoven web substrate selected from the group consisting of composite fabrics of hydroentangled pulp and spunbond fibers, spunbond fabrics, meltblown fabrics and laminates of spunbond and meltblown fabrics and wherein at least a portion of said nonwoven web substrate comprises thermoplastic polyolefin fibers and having adhered thereon the dried residue of an aqueous mixture comprising a room temperature crosslinkable latex polymer selected from the group consisting of ethylene, vinyl acetates, ethylene vinyl chlorides, styrene-butadiene, acrylates, and styrene-acrylate copolymers, a pigment, and a cure promoter, and which retains a colorfastness above 3 when measured by AATCC test method 8 using 30 strokes when exposed to liquids with a pH between about 2 and about 13.
A printed composite fabric of hydroentangled pulp and thermoplastic polyolefin polymer spunbond fibers having a pre-printing bone-dry basis weight of about 64 gsm and having adhered thereon the dried residue of an aqueous mixture comprising about 100 dry parts by weight of a room temperature curable crosslinkable latex selected from the group consisting of ethylene, vinyl acetates, ethylene vinyl chlorides, styrene-butadiene, acrylates, and styrene-acrylate copolymers, between about 1 and 5 dry parts by weight of a pigment, and between about 4 and 6 dry parts by weight of a cure promoter which is an aziridine oligimer with at least two aziridine functional groups, and which retains a colorfastness above 3 when measured by AATCC test method 8 using 30 strokes when exposed to liquids with a pH between about 2 and about 13.
Dependencies are inferred from the claim text.