METHODS AND APPARATUS FOR APPLYING PROTECTIVE FILMS

摘要

An applicator die for creating undivided ribbons of polymeric film and a method of using the die to apply an emulsified polymeric material in ribbons to a fully or partially finished surface of an automobile body. In one application, the ribbon is applied as a peelable film to an automobile body and in another application, a ribbon is applied to a rocker panel as an anti-chip coating. For both applications, the applicator die has an internal gallery and an outlet slot with flared edge surfaces to emit a laminarized ribbon of polymer-based material at a distance from the target surface where the opposite edges of the ribbon have become essentially parallel.

主权项

1. A method for applying a protective film of polymeric material to a surface on an object such as the body of an automobile comprising the steps of:
(a) positioning an extrusion die having an elongate linear outlet slot with flared side surfaces a predetermined distance from the surface; (b) supplying an emulsified polymer based material to the die to cause a thin, flared, undivided, unatomized ribbon of said material to issue from the die; (c) moving the die relative to the surface to cause the issuing ribbon to adheringly contact the body to coat the body while maintaining said predetermined distance; said predetermined distance being such that the edges of the ribbon at said distance are have become essentially parallel.