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1.发明授权
公开(公告)号：US3617200A
公开(公告)日：1971-11-02
申请号：US3617200D
申请日：1968-09-19
Applicant: WIGGINS TEAPE RES DEV
Inventor： GILDER PETER JOHN
CPC classification number: D06B1/02
Abstract: A fibrous web is parchmentized by drawing the web from a parchmentizing bath and passing it through successive washing positions and the feature of the invention resides in maintaining at a substantially constant level the temperature of the washing liquid at the first washing position.
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