Browse Prior Art Database

Flash Free Hot Melt Application Process

IP.com Disclosure Number: IPCOM000075004D
Original Publication Date: 1971-Jul-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Cameron, JM: AUTHOR [+2]

Abstract

This is a process for applying a hot melt coating to flat cables to protect them from hostile environments. This process features the use of a thin, multiapertured mask overlying the areas of the cable which are to be protectively coated. The mask resides between the hot melt dispensing nozzle tip and the area of the cable assembly which is to be protectively coated. The thickness of the mask controls the thickness of the hot melt coating material.

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Flash Free Hot Melt Application Process

This is a process for applying a hot melt coating to flat cables to protect them from hostile environments. This process features the use of a thin, multiapertured mask overlying the areas of the cable which are to be protectively coated. The mask resides between the hot melt dispensing nozzle tip and the area of the cable assembly which is to be protectively coated. The thickness of the mask controls the thickness of the hot melt coating material.

The mask can be rendered immune to adhesion by the hot melt material by a proper choice of mask material or by application of a TEFLON* coating to all sides and edges of the mask. Alternatively, the masks can be made from stainless steel, cold rolled steel, spring steel, alumina ceramic, and tempered glass, or the like.

In this application process a contact type of nozzle 1 is preferably used to apply the hot melt material. The nozzle assembly is controllably positioned relative to the mask 2 and material 3 to be coated so as to assure a constant and positive pressure between the nozzle tip 1 and the mask 2. This assures a uniform distribution of the coating material and an attendant wiping action which provides a no-flash condition on the mask. * Trademark of E. I. du Pont de Nemours & Company

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