Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1973-06-11
1976-08-03
Drummond, Douglas J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156181, 156244, 136146, 136148, D04H 316, H01M 216
Patent
active
039727599
ABSTRACT:
A battery separator and the process for preparing it, having excellent abrasion resistance, stiffness, porosity, pore size, and electrical resistance is produced by a process that includes degrading a fiber forming polymer, melt-blowing fibers from the degraded polymers and forming a non-woven mat of the fibers randomly laid and self-bonded. The non-woven mat is then compacted, in a critical manner, preferably at temperatures for polypropylene of from 290.degree. to 310.degree.F., using relatively low pressures, i.e. 10 psi/in.sup.2 or lss, to obtain a battery separator meeting precise and essential specifications.
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"Superfine Thermoplastic Fibers," Wente, Ind. Eng. Chem., vol. 18, No. 8, pp. 1342-1346, Aug. 1956.
Ball Michael W.
Drummond Douglas J.
Exxon Research and Engineering Company
Roth David A.
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