Plastic article or earthenware shaping or treating: apparatus – Preform severing means – Severing means is perforator
Patent
1991-05-21
1993-11-02
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Preform severing means
Severing means is perforator
83663, 4251744, 425367, B26F 110
Patent
active
052579239
ABSTRACT:
A porous film manufacturing apparatus is disclosed, which can continuously and uniformly form a large number of uniform through pores or blind pores, each having a size arbitrarily selected in the range of sub-.mu.m to several tens .mu.m, in an elongated film made of various types of materials, such as polymeric materials and metals, at a high density (e.g., 5,000 to 200,000 per cm.sup.2), without almost any deterioration in essential characteristics of the film materials. The manufacturing apparatus includes a feeder for feeding an elongated film, a perforating unit including a first rotatable roll having a surface on which a large number of particles, each having acute corner portions and a Mohs hardness value of not less than 5, are deposited, and a second roll which is rotatable in a direction reverse to a rotating direction of the first roll, the first and second rolls being arranged to oppose each other and to cause the elongated film to pass therebetween, one of the rolls being stationary, and the other roll being movable in a direction to oppose the one roll, and a pressure controller, arranged near two end portions of the movable roll of the unit, for controlling a pressure applied from each of the rolls to the film.
REFERENCES:
patent: 3141746 (1964-07-01), De Lai
patent: 3359597 (1967-12-01), Bainton
patent: 3529045 (1970-09-01), Rosenstein
patent: 4057377 (1977-11-01), Sakurazawa
patent: 4351784 (1982-09-01), Thomas et al.
patent: 4859519 (1989-08-01), Cabe, Jr. et al.
patent: 5057167 (1991-10-01), Gersbeck
World Patents Index Latest, Week 9207, Derwent Publications Ltd., London, GB; AN 92-054124 & JP-A-4 002 499 (Saitama Leather KK) 7 Jan. 1992.
Patent Abstracts of Japan, vol. 015, No. 145, Apr. 12, 1991 & JP-A-3 024 172 (Sany9 Kokusaku Pulp Co. Ltd.) Feb. 1, 1991.
Abstract of Japanese Unexamined Application No. 63-96348, Publication No. 1-266150, Oct. 24, 1989 Showa Electric Wire & Cable Co. ltd.
Chiesa Richard L.
Kagawa Seiji
Sudo Norito
LandOfFree
Porous film manufacturing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Porous film manufacturing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Porous film manufacturing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1754453