Apparatus for manufacturing a product in membrane or film form f

Details Apparatus for manufacturing a product in membrane or film form f Apparatus for manufacturing a product in membrane or film form f

1998-04-15

1999-12-28

Vo, Peter

Manufacturing container or tube from paper; or other manufacturi

With cutting, breaking, tearing, or abrading

Including application of heat

493365, 493369, 493371, 83171, 83347, 83506, 83660, B31B 114

Patent

active

06007468&

ABSTRACT:
An apparatus is described for forming a web (N) that is permeable to liquids and designed to separate two environments and to allow the liquid to flow in one direction from one of said environments to the other, in which said web is caused to pass between two contra-rotating cylinders (5, 7) that are pressed against each other, one of said cylinders (7) having a surface provided with projections which cause perforations in said web (N). The cylinder (7) with the projections is turned at a peripheral speed greater than the peripheral speed of the other cylinder (5), with a consequent relative slipping action between the surfaces of the two cylinders (5, 7).

REFERENCES:
patent: 2748863 (1956-06-01), Benton
patent: 3683559 (1972-08-01), Kalwaites
patent: 3718059 (1973-02-01), Clayton
patent: 4859519 (1989-08-01), Cabe, Jr. et al.

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