420 stainless steel optimized for PET’s chemical compatibility requirements.S136 and H13 pre-hardened steel offering good wear resistance.Tolerances maintained at +/- 0.005” or better for precision molding.Surface finish of SPI A-2 or better for good PET material cosmetics.Venting included to prevent defects like blistering, burning, and warpage.Ejection system with integrated cam-operated mechanisms for reliable demolding.Cooling system engineered for even cooling using bubblers and conformal channels.Gate design specialized for smooth PET flow with options like direct, pinpoint, hot tip.Mold configuration (cavities, layout) optimized based on production requirements and efficiency.Unleash your PET production potential with our molds. We will deliver a mold solution tailored for your needs and budget. Our combination of precision engineering, robust construction, and streamlined manufacturing translates to premium preforms, higher throughput, and better value.Ĭontact our application engineers today to discuss your project. Trust us to deliver the expertly-crafted PET preform molds you need to drive profits. Quick turnarounds get your molds delivered fast so you start production sooner. Our rigorous quality inspections and advanced production technologies guarantee molds are made right the first time. With tolerance control under 0.005”, our molds deliver exceptional precision. Our patented surface polishing process creates a polished finish for flawless preform surfaces. We use only the finest tool steel alloys to craft sturdy molds that retain accuracy across millions of cycles. Intelligently designed gates and ejection systems ensure smooth demolding and production efficiency. Strategic cooling technologies like bubblers and conformal channels enable optimal cooling for defect-free preforms. Our PET preform molds are engineered for efficiency, consistency and reliability. With decades of specialized expertise crafting molds for major beverage and packaging brands worldwide, we deliver the precision and performance you need. Experiments have shown that the preforms molded from PET materials with the same viscosity are easier to blow molded from imported raw materials than domestic materials while the same batch of preforms have different production dates, and the blow molding process may also be quite different.Upgrade your PET bottle production with high-quality preform molds from China’s leading mold maker. Materials that are easy to inflate and shape should be selected, and a reasonable preform molding process should be formulated. The pros and cons of preforms largely depend on the pros and cons of PET materials. The storage time of preforms cannot exceed six months. The preforms that are not used up after heating must be stored for more than 48 hours to be reheated for use. The injection-molded preform must be stored for more than 24 hours before it can be used. According to the National Food Safety Law, secondary recycled materials shall not be used for food and medical packaging. It requires that the proportion of secondary recycled materials should not be too high (below 5%), the number of recycling should not exceed two, and the molecular weight and viscosity should not be too low ( The molecular weight is 3100-50000, and the intrinsic viscosity is 0.78-0.85cm3/g). When preparing a blow-molded bottle from the preform mold, firstly inject the PET chip into a preform. At this stage, the main process parameters that affect the wall thickness distribution are: pre-blowing pressure and pre-blowing time. In the pre-blowing stage of the parison, blow air from below the parison into the parison to protect the parison and reduce its sag. In the pre-blowing stage of the parison, in order to avoid the contact and adhesion of the inner surface of the parison and improve the uniformity of the wall thickness of the product, the parison should be pre-bloated. The control system includes the axial wall thickness control system and the circumferential wall thickness control system to adjust the gap between the die lip and the core. The main process parameters that affect the wall thickness distribution are the die diameter and wall thickness control system of the blow molding machine. At this time, the two phenomena of parison ejection expansion and parison drooping affect the parison forming. PET preform mold manufacturers, the blanking stage of the blow molding mold blank is extruded from the gap between the die lip and the mold core as the blanking stage.
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