TANNINED LEATHER WASTE FIBER, ITS PRODUCTION, REGENERATED BASE PAPER FOR LEATHER PAPER USING THE SAME FIBER AND REGENERATED LEATHER PAPER

Title:

TANNINED LEATHER WASTE FIBER, ITS PRODUCTION, REGENERATED BASE PAPER FOR LEATHER PAPER USING THE SAME FIBER AND REGENERATED LEATHER PAPER

Document Type and Number:

Japanese Patent JPH10273817

Kind Code:

A

Abstract:

To obtain the subject fiber, good in operating efficiency and yield, uniform in quality and excellent in economical efficiency by dry pulverizing a tannined leather waste.

A tannined leather waste is dry pulverized to afford the objective fiber. The tannined leather waste is regulated to ≤12 wt.% moisture content and the regulated leather waste is then pulverized with a dry pulverizer by setting the peripheral speed at ≥1,000 m/min and the clearance between a rotating blade and a fixed blade at 0.3-0.5 mm and the dry screening can further be performed with a round hole screen having 0.5-1.5 mm diameter to produce the fibers. The regenerated base paper for leather paper containing the fibers can be produced and may further contain natural cellulosic fibers and/or synthetic fibers. Furthermore, the synthetic fibers may be thermally fusible fibers.

Inventors:

HAMU SHIYOUJI
MORIKAWA ISAO
TAKEUCHI TOSHIYUKI
NOMURA TAKUYA
YOSHIDA MINA
KABAYAMA YOSHIAKI

Application Number:

JP5250397A

Publication Date:

October 13, 1998

Filing Date:

February 21, 1997

Export Citation:

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Assignee:

OJI PAPER CO

International Classes:

D06N7/00; B32B5/02; B32B9/02; D01B9/00; D01F4/00; D21H13/10; D21H13/34; (IPC1-7): D01F4/00; B32B5/02; B32B9/02; D01B9/00; D06N7/00; D21H13/34

Attorney, Agent or Firm:

Hiroshi Nakamoto (3 others)

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