Ink occlusion material for writing utensils

Details Ink occlusion material for writing utensils Ink occlusion material for writing utensils

1990-09-27

1992-12-08

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

57254, 57255, 428369, 428394, 428395, D04H 308

Patent

active

051694670

ABSTRACT:
According to the present invention, the ink occlusion material for writing utensils comprises a fiber bundle of a mixture of (a) and acrylic synthetic fiber and (b) at least one hydrophobic fiber selected from the group consisting of polyester fibers and polypropylene fibers in a weight ration of 20 to 70:80 to 30. The two fibers are drawn so as to show a sea-island form in the cross-section of the fiber bundle, spot-adhered by the partial melt-adhesion of the acrylic synthetic fiber, and the fiber bundle is twisted at a rate of 1 to 30 T/M.

REFERENCES:
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patent: 3558392 (1971-01-01), Goodenow et al.
patent: 4104781 (1978-08-01), Midorikawa
patent: 4118529 (1978-10-01), Nakagawa et al.
patent: 4402178 (1983-09-01), Negishi et al.
patent: 4517715 (1985-05-01), Yoshida et al.
patent: 4523428 (1985-06-01), Negishi et al.
patent: 4729215 (1988-03-01), Sato et al.

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