The two-stage PP secondary heating stretch blow molding machine of the invention comprises components: a conveying device, a blanking mechanism, heaters, a reflection box, a blowing box, a blowing machine, an infrared temperature sensor, a thermostat and a molding mechanism. It uses low-cost PP homopolymer as raw material to produce ultra-transparent hollow containers. Its unique heating system ensures uniform temperature distribution of preform wall thickness and high transparency, enabling high-quality and stable production. It can mold bottles with circular, square, oval and other cross-sections, meeting the overall production of hot-filling bottles. Dual-cavity simultaneous stretch blowing greatly increases production speed. Crystalline PP has a very narrow processing temperature range, with preform position temperature controlled at ±1℃. Only within this range can molecular chains move freely without internal stress affecting bottle transparency. Its unique automatic feedback temperature control adjusts the temperature of each heater in real time according to preform temperature measured by infrared rays, keeping the temperature of each preform constant, representing a highly innovative invention.
Country Code: CN
Application Number: TW089125727
