Extrusion of bubble-free adhesive cartridges from polyester resin - by extruding against an adjustable resistance using an elastic plug in the mould channel

摘要

The adhesive, opt contg. granular components which is filled against a movable resistance. Advantageously the mixed material is treated before injection and cooled during the introduction in the mould channel. Bubble-free rods of length equal to a multiple of the dia meter are cooled in the mold for a pre-determined time and then removed and subdivided into cartridge type length for use in an adhesive gun. Methods avoids the difficulties and riks of accident, which arise in directly extruded cartridge contg. occluded gas bubbles.