High grade polyethylene paper

Details High grade polyethylene paper High grade polyethylene paper

1992-11-09

1993-09-07

Bell, James J.

Paper making and fiber liberation

Processes and products

Plural fiber containing

162149, 162158, 1621641, 162206, D21H 1310

Patent

active

052425460

ABSTRACT:
A process for producing high grade polyethylene paper on conventional continuous wet-lay papermaking equipment. In particular, the process comprises preparing a furnish of 75-99 wt. % oriented polyethylene pulp, 0.5-15 wt. % fibrous stabilizing agent and 0.5-10 wt. % strengthening agent and depositing the furnish on the forming screen of a conventional wet-lay papermaking machine. The resulting waterleaf sheet is dried on heated drying cans and then thermally bonded to provide a high grade polyethylene paper having high dry strength and toughness, exceptional dimensional stability and superior uniformity (i.e., no holes). The high grade polyethylene paper made by the inventive process is particularly useful in microfiltration end-uses such as vacuum cleaner bags.

REFERENCES:
patent: 3169899 (1965-02-01), Steuber
patent: 3920508 (1975-11-01), Yonemori
patent: 4608089 (1986-08-01), Gale et al.
patent: 4783507 (1988-11-01), Tokunga et al.
patent: 5000824 (1991-03-01), Gale et al.
patent: 5013599 (1991-05-01), Guckert et al.
patent: 5047121 (1991-09-01), Kochar
patent: 5133835 (1992-07-01), Goettmann et al.
Kirk-Othmer: Encyclopedia of Chemical Technology, vol. 19, 3rd edition, John Wiley & Sons, pp. 420-435 (1982).

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