3878014 is referenced by 139 patents and cites 9 patents.

An improved process for making a laminar structure of a non-woven mat of melt-blown microfibers and a pre-formed porous web. The process involves laying down upon a pre-formed moving web a layer of melt blown microfibers. The web is then moved over the zone where sub-atmospheric pressures are maintained and then subsequently over a zone where super-atmospheric pressures are maintained. The process enables one to produce a laminant incorporating a layer of melt blown microfibers by using applied pressures to regulate microfiber mat thickness and to bond same to an adjoining web.

Title
Process for matting melt blow microfibers
Application Number
05/355,901
Publication Number
3878014
Application Date
April 30, 1973
Publication Date
April 15, 1975
Inventor
Melead James J
Agent
Hill Gross Simpson Van Santen Steadman Chiara & Simpson
Assignee
Beloit Corporation
IPC
D04h 03/16
D04H 01/56
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