ADD COAT wire is used as stretching inhibitor for various automobile moldings in the automobile field and window sash beads in the construction material field and has earned a good reputation.
Generally, in the process of profile extrusion molding, molten resin is extruded through a die with a required cross-section shape and cured to make molded parts with a certain cross section continuously. Molten resin shrinks when it is cooled and cured, leaving molding distortion in the finished molded products. To remove this molding distortion, annealing is required.
Thus, conventionally, this required extrusion → rough cutting → annealing → precision cutting, necessitating a substantial amount of man-hours.
ADD COAT wire allows precision cutting at the time of extrusion molding thanks to its stretching inhibiting effect, achieving a reduction in total costs.
At the time of extrusion molding, a cross head die is used to insert ADD COAT wire into resin while extruding it. The heat of molten resin melts a bonding layer of ADD COAT wire, allowing it to be fused with resin. As molten resin cools and cured, the bonding layer also cools and cures, enabling its adhesion to molding. In this cooling process, ADD COAT-wire restrains resin stretch and molding distortion.