Title:
METHOD AND APPARATUS FOR PRODUCING BASE MATERIAL OF FREE EXTENSIBLE FIBROUS TAPE
Document Type and Number:
Japanese Patent JPS63315691
Kind Code:
A
Abstract:
A fibrous tape base web material comprises fibres bonded together by paper making bonds with the web having a first surface with patterned undulations and an opposite second relative smooth surface. The web has an apparent bulk in the range giving a thickness of between 0.025 and 0.005 mm in a sheet having a weight of 1.63 per m² (about 0.10 to about 0.20 caliper points per lb ream), a machine direction tensile strength of at least 2.86 kg/cm (16 lb/in) and a machine direction stretch of at least 8%. Conveniently the tape base web can be manufactured utilizing the steps of forming a wet fibrous web, pressing said web to thereby partially dewater said web to between about 30 and 50% solids, moving said material at a speed about 5% and about 25% less than the surface speed of said roll.
Inventors:
BAANAADO JIYOOJI KUROOKU
Application Number:
JP3734788A
Publication Date:
December 23, 1988
Filing Date:
February 19, 1988
Export Citation:
Assignee:
JAMES RIVER CORP
International Classes:
D21F7/08; C09J7/21; D21F1/00; D21F9/02; D21F11/00; D21F11/02; D21H25/00; D21H27/00; D21H27/40; (IPC1-7): D21F7/08; D21F9/02; D21F11/02; D21H5/00
Attorney, Agent or Firm:
Minoru Nakamura (4 outside)
Previous Patent: FELT FOR PAPERMAKING MACHINE
Next Patent: APPARATUS FOR REMOVING PAPER POWDER OF DOCTOR
Next Patent: APPARATUS FOR REMOVING PAPER POWDER OF DOCTOR