Porous material for ink stamps, production method therefor, and self-inking stamp
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Jan 31, 2013
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Jul 10, 2012
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Abstract
A porous stamp material allows only resin in a region thereof irradiated with a laser beam during laser engraving in a production process of an ink stamp to be burnt and vaporized while preventing melting in any other unwanted region. The porous material for ink stamps comprises: at least one thermoplastic resin selected from the group consisting of low-density polyethylene, linear low-density polyethylene, high-density polyethylene, ethylene-alpha-olefin copolymer, ethylene-vinyl acetate copolymer, and ethylene-acrylic copolymer; at least one thermoplastic elastomer selected from a plurality of different hydrogenated styrene based thermoplastic elastomers; and at least one filler selected from a plurality of different inorganic compounds, wherein the thermoplastic resin and/or the thermoplastic elastomer are cross-linked, and formed in a continuous pore structure.
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