Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1997-04-29
1999-12-21
Dye, Rena L.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 369, 4283044, 428913, 152091, 15230, 152441, 152444, B29D 2200, A47L 1316
Patent
active
060046406
ABSTRACT:
A novel method and a novel article are disclosed for cleaning a metal, glass, or plastic surface without scratching or scoring the surface. The novel method comprises wiping the surface with the novel article, which is made from an open cell, hydrophilic, static-dissipative, polyurethane foam, and which is laundered so that the article in deionized water releases fewer than 36.0.times.10.sup.6 per square meter of apparent surface area of the article for particles of a size greater than about 0.5 .mu.m and fewer than about 2.5 parts per million of chloride, fluoride, sodium, sulfate, sulfite, or silicon ions. The novel article may be a wiper, a sponge, a roller, a swab mounted on a handle, or a plug having a generally cylindrical shape when unstressed and having particular utility where the surface is the interior surface of a metal, glass, or plastic tube. The plug is propelled through the tube, as by means of compressed air. The novel method also may comprise washing the surface with deionized water.
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Pisacane Ferdinand Frederick
Seacord Alan R.
Dye Rena L.
Wilshire Technologies, Inc.
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