Cylindrical covering fabric for a damping form roller of an offset printing machine
AssigneeMmt SA
InventorsHirofumi Takeda, Hirobumi Suzuki
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Abstract
A cylindrical covering fabric for a damping form roller of an offset printing machine is manufactured by weaving, as ground yarn, yarns composed of polyurethane fibers drafted to at least twice of free length, water-soluble fibers and water-insoluble fibers coiling around the above-mentioned polyurethane fiber and water-soluble fiber and, as pile yarn, hydrophilic fibers. The covering fabric is firmly mounted on a damping form roller by immersing the roller covered by the fabric in water to remove the water-soluble fibers from the ground yarns, followed by shrinking of the polyurethane fibers.
Claims4
A cylindrical covering fabric for a damping form roller of an offset printing machine, which comprises ground yarns and hydrophilic pile yarns woven together, said ground yarn being composed of polyurethane fibers drawn to at least twice their free length, water-soluble fibers and water-insoluble fibers coiling around said polyurethane fibers and water-soluble fibers.
Dependencies are inferred from the claim text.