1
Butin Robert R, Keller James P, Harding John W: Non-woven mats by melt blowing. Exxon Research and Engineering Company, Burgess Timothy L, Roth David A, November 19, 1974: US3849241 (1136 worldwide citation)

Melt blown non-woven mats prepared from thermoplastic polymer fibers and substantially completely free of polymer shot are produced at high polymer throughput rates in an improved melt blowing process in which thermoplastic polymer resins, preferably polypropylene, having initial intrinsic viscositi ...


2
Non-woven mats by melt blowing. Exxon Research Engineering Co, February 11, 1976: GB1424717-A

1424717 Polymer mats EXXON RESEARCH & ENG CO 22 Feb 1973 [22 Feb 1972 3 March 1972] 8742/73 Addition to 1295267 Headings B5A and B5B [Also in Division D1] A melt-blown non-woven mat is made by subjecting a fibre-forming thermoplastic polymer resin of initial intrinsic viscosity at least 1À4 (as dete ...