Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Longitudinally progressive helical winding means
Patent
1996-12-04
1997-11-25
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Longitudinally progressive helical winding means
156458, 156 735, 156167, 156172, B01D 2702
Patent
active
056907826
ABSTRACT:
Apparatus and methods are disclosed whereby elongate preformed thermoplastic elements are friction-welded coaxially in an end-to-end manner so that the core elements are joined integrally to one another. Most preferably, the elongate elements are perforated tubular elements formed of a thermoplastic material which are employed as core elements in the production of cylindrical melt-blown filter cartridges. As such, the integrally joined core elements can be rotated and traversed as a unit relative to a melt-blowing die during the continuous production of indefinite length cylindrical melt-blown filter cartridges.
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patent: 4333671 (1982-06-01), Holko
patent: 5152855 (1992-10-01), Jansman et al.
Connor Robert D.
Mozelack Brian
Schmitt Robert J.
Ball Michael W.
Memtec Ltd.
Yao Sam Chuan
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