Winding – tensioning – or guiding – Bobbin or spool – Cop-tube type
427407R, 427408, 428425, 428541, B65H 7512, B32B 2740
An improved wood textile bobbin which is provided with two layers of protective coatings, the first layer being made up of ricinoleate diphenyl methane diisocyanate prepolymer (MDI) trifunctional polyether polyol (TPP), and the second layer being composed of MDI, TPP, acrylic copolymer, and to a process for producing such a bobbin.
patent: 2993807 (1961-07-01), Abbott et al.
patent: 3546148 (1970-12-01), Diamond et al.
patent: 3664861 (1972-05-01), Okamura et al.
patent: 3681289 (1972-08-01), Kruse et al.
Allen, Jr. Frank L.
Webster, III Walter C.
Lesmes George F.
Roche R. J.
Rockwell International Corporation
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