Accession Number : ADA190372

Title :   Method of Manufacturing Polyamide, Polyurethane and Similar Threads, Fibers, Tapes and other Articles and Device for Carrying out This Method,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Kuentscher, Wolfgang ; Kilver, Hans ; Davydov, Vladimir

PDF Url : ADA190372

Report Date : 10 Feb 1988

Pagination or Media Count : 8

Abstract : This invention is a method of manufacturing polyamide, polyurethane, and similar threads, fibers, tapes, and other articles by molding them from a polymer melt. THe advantage of the proposed method over the known one is that the threads, fibers, tapes and similar articles obtained from polyamides, polyurethanes and similar substances are of higher quality, specifically, with regard to their strength and elongation. This is accomplished by using an electromagnetic field during the processes of molding the article, feeding the molten polymer to the nozzle, cooling and hardening the article, or extending and applying other treatments to threads, fibers, tapes, etc. In order to do this, a device constructed in the form of a series of electrical coils through which the article to be molded is passed in the direction of the coils' longitudinal axis is used. The electromagnetic field can be excited by direct or alternating current.

Descriptors :   *MANUFACTURING, *POLYAMIDE PLASTICS, ALTERNATING CURRENT, COILS, ELECTRICAL PROPERTIES, ELECTROMAGNETIC FIELDS, ELONGATION, MELTS, MOLDINGS, POLYMERS, POLYURETHANE RESINS, RUSSIAN LANGUAGE, TRANSLATIONS, USSR, STRENGTH(MECHANICS), RUPTURE, QUALITY CONTROL, INVENTIONS

Subject Categories : Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE