Process for manufacturing a flat, fibrous, supple substrate, difficult to tear and substrate obtained
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 7, 1995
Issued Date -
N/A
app pub date -
Mar 16, 1993
filing date -
May 18, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This invention relates to a process for manufacturing a flat, fibrous, supple substrate, difficult to tear, said process consisting in: preparing by fibrillation natural cellulosic fibers until their drainability is greater than 60.degree. Schopper-Riegler, mixing in water a batch of cellulosic fibers thus refined and at least 30% by weight on dry matter of artificial fibers, with respect to the whole quantity of said artificial and cellulosic fibers, diluting the mixture obtained, and producing a substrate sheet from a machine supplied with the mixture. The invention is more particularly applicable to the manufacture of envelopes and sachets.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully