High grade polyethylene paper

Paper making and fiber liberation – Processes and products – Plural fiber containing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

1621575, 162206, D21H 1314

Patent

active

050471210

ABSTRACT:
A process is disclosed for producing high grade synthetic paper containing at least 97 wt. % polyethylene on conventional continuous wet-lay paper-making equipment. In particular, the process comprises preparing a pulp furnish of 97-99.5 wt. % oriented polyethylene fibers and 0.5-3.0 wt. % polyvinyl alcohol fibers and depositing the fibers on the forming screen of a conventional wet-lay paper machine. The resulting waterleaf sheet is then dried on heated PTFE-coated drying cans, using a particular drying profile to reduce sticking and elongation, and then thermally bonded to provide a polyethylene paper having high strength, low defects and excellent uniformity. A process for producing the pulp fibers used in the paper-making process is also disclosed.

REFERENCES:
patent: 2999788 (1961-09-01), Morgan
patent: 3169899 (1965-02-01), Steuber
patent: 3808091 (1974-04-01), Aoki et al.
patent: 3878183 (1975-04-01), Koga et al.
patent: 3891499 (1975-06-01), Kato et al.
patent: 3902957 (1975-09-01), Kozlowski
patent: 3920507 (1975-11-01), Yonemori
patent: 3920508 (1975-11-01), Yonemori
patent: 3920509 (1975-11-01), Yonemori
patent: 3957573 (1976-05-01), Miyamoto et al.
patent: 4107243 (1978-08-01), Stearns et al.
patent: 4110385 (1978-08-01), Sander et al.
patent: 4310591 (1982-01-01), Lee et al.
patent: 4404314 (1983-09-01), Jabloner
patent: 4554207 (1985-11-01), Lee
patent: 4608089 (1986-08-01), Gale et al.
patent: 4647497 (1987-03-01), Weeks
patent: 4783507 (1988-11-01), Tokunaga et al.
Chemical Abstracts, 65338x, vol. 105, No. 8, p. 303 (8/86) discussing Jap. Patent Application 60 141659-A (Mitsui Petrochem. Ind.).
W. A. Kindler: "The Influence of Synthetic Pulp Fibers on Web Behavior", TAPPI, vol. 59, No. 5, pp. 113-116 (May 1976).
Kirk-Othmer: Encyclopedia of Chemical Technology, vol. 19, 3rd edition, John Wiley & Sons, pp. 420-435 (1982).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

High grade polyethylene paper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High grade polyethylene paper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High grade polyethylene paper will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-538055

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.