Cylindrical filter

Details Cylindrical filter Cylindrical filter

1988-05-19

1989-08-29

Bell, James J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

57905, 57908, 156167, 264103, 428221, 428222, 428296, 428299, 428373, D04H 104

Patent

active

048616338

ABSTRACT:
A superior cylindrical filter having a long filtration life is provided, which filter is obtained by using interlaced filaments comprising 20% by weight or more of hot-melt-adhesive composite filaments composed of plurality of components having a melting point difference of 20.degree. C. or more and having two or more interlaced portions per meter of which the interlacing strength is 15.times.D mg or more, wound up on a core material in a cylindrical form under a tension of 15.times.D mg or less, the contact points of the interlaced filaments being bonded by melt-adhesion of the low melting component of the composite filaments.

REFERENCES:
patent: 4269888 (1981-05-01), Ejima et al.
patent: 4542060 (1985-09-01), Yoshida et al.
patent: 4551378 (1985-11-01), Carey
patent: 4770925 (1988-09-01), Uchikawa et al.
patent: 4772347 (1988-09-01), Fowler
English abstract of Japanese Appln. 62183818 provided by Derwent.
English abstract of Japanese Appln. 62269721 provided by Derwent.

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