PP thermoforming sheet is currently the most widely used and largest sheet in domestic positive pressure thermoforming, even in the whole family of thermoforming sheet, it has long since taken the lead and is almost equal to PVC and PS. The disposable plastic jelly cups, drinking water cups, soy milk cups, tofu boxes, etc. that can be found everywhere in the market are almost all made of PP sheet thermoforming; in the domestic annual output of disposable plastic yogurt cups, which have reached billions or even tens of billions, PP also accounts for half of the plastic yogurt cups. PP also occu
PET extruded sheet is widely used in the field of vacuum blister molding: food and beverage food packaging, toy boxes, stationery boxes, gift boxes and tools, fruit hardware and other packaging; in the field of antistatic applications: electronic parts packaging, permanent conductive sheet, permanent antistatic sheet, permanent semi-conductive sheet and other packaging; in the field of daily life applications: blister, folding boxes, packaging, printing, card making and other industries. PET sheet has excellent transparency and finish, good display effect; excellent surface decorative properti
To ensure product quality, one or more sets of melt pumps and filters are generally used in the production line of cast film and laminated film. Studying their performance characteristics, analyzing the causes of defects and choosing the right melt pumps and filters can significantly improve the production efficiency and yield of cast film and create greater economic benefits. The production of bi-directional cast film and paper lamination requires high sealing of screen changer and high production temperature, so the common screen changer basically has the problem of material leakage or seepa