Extrusion processing method for rubber and silica gel double-layer sheath wire

• Main Authors: LI LEYANG, WEN JILUAN, SHI RONGBING
• Format: Patent
• Language: Chinese; English
• Published: 29.04.2022
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A rubber and silica gel double-layer sheath wire extrusion processing method comprises the following steps that rubber and silica gel are put into a feeding port of an extrusion device, the extrusion device comprises a rubber charging barrel, a silica gel charging barrel and a machine head, a double-layer extrusion die is arranged in the machine head, and one side of the machine head is connected with a steam pipe; a rubber screw rod is arranged in the rubber charging barrel, and a first-section heating area, a second-section heating area and a third-section heating area are arranged on the rubber charging barrel; a silica gel screw rod is arranged in the silica gel charging barrel, and a cooling water path is arranged on the silica gel charging barrel, so that the temperature of the silica gel charging barrel is lower than 40 DEG C; the double-layer extrusion die comprises an outer die, a middle die and an inner die, a rubber extrusion channel is formed between the middle die and the outer die, a silica gel