Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1996-12-04
1998-04-21
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156429, 156 735, 1563042, 228 23, 2281121, 2281145, B23K 2012, B29C 6506
Patent
active
057413959
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.
REFERENCES:
patent: 4112159 (1978-09-01), Pall
patent: 4116738 (1978-09-01), Pall
patent: 4741788 (1988-05-01), Clark et al.
patent: 5152855 (1992-10-01), Jansman et al.
Connor Robert D.
Mozelack Brian
Schmitt Robert J.
Ball Michael W.
Memtec America Corporation
Yao Sam Chuan
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