Accession Number : AD0864995

Title :   Evaluation of Methods Used in Heat Sealing Thermoplastic Coated Fabrics.

Descriptive Note : Technical rept.,

Corporate Author : ARMY WEAPONS COMMAND ROCK ISLAND IL SCIENCE AND TECHNOLOGY LAB

Personal Author(s) : Koehler, Thomas J.

Report Date : FEB 1969

Pagination or Media Count : 66

Abstract : This two part report covers an investigation of electronic sealing equipment, methods, and techniques for heat sealing selected thermoplastic-coated fabrics. Part one is a comparison of dielectric, thermal, ultrasonic, and thermal impulse methods, for sealing thermoplastic-coated fabrics. Detailed operation manuals for use by shop personnel are provided for each of the methods. Also included is a comparison of the shear and peel strength properties of heat sealed coated fabrics. The dielectric heat sealing process was superior for fabrication of seams on vinyl-coated fabrics whereas, thermal or ultrasonic methods were best for heat sealing polyethylene/vinyl acetate, polethylene/ethyl acrylate, or polyurethane-coated fabrics. Part two is a detailed study of dielectric sealing equipment power settings required to fabricate various width heat seals, including an analysis of the resulting seam strength. (Author)

Descriptors :   (*TEXTILES, PLASTIC COATINGS), (*THERMAL JOINING, TEXTILES), NYLON, VINYL PLASTICS, POLYETHYLENE PLASTICS, DIELECTRIC PROPERTIES, ULTRASONIC WELDING, BONDING, INSTRUCTION MANUALS.

Subject Categories : Textiles
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE