Do you know about the method and process of PP plastic bottles?

Into the winter has come, with outdoor temperature drop, some outdoor more cosmetic stall in a rice cooker, vendors will various heating selling bottled cosmetic into it, is very popular with customers. A few days in a row, on the streets of some journalists to visit shijiazhuang cosmetic booth, found that in the zhongshan road and the place such as construction and north street street intersection, are selling the heating phenomenon of cosmetic bottles, to make the pot cosmetic keep warm, will heat the water in the rice cooker, vendor does not immediately without electricity, but always live in the insulation state. A vendor said, heating and temperature is a price, but customers generally like to select heating. 'Buy heating cosmetic bottles, because their intestines and stomach bad, can warm the stomach, can also warm hands. Just heating chose a bottle of milk tea ', says ms Yang vendors want to very thoughtful, so cold day, walk on the outside, or would like to buy some warm. , experts said, common on the market of mineral water, milk tea, carbonated cosmetic such as plastic bottle at the bottom of the triangle mark the number '1', representing the PET, labeled '1' plastic resistant to high temperature at 65 degrees Celsius, it is safe, is used in low temperature is not suitable for repeated heating, heating or even boil, PET would release a heated DEHP toxic substances, endanger human body health. PP plastic stretch blow molding method and process of PP plastic extrusion stretch blow molding and injection stretch blow molding machine has two, they adopt the extrusion and injection molding parison. After the parison forming, is cooled to high elastic state or cool to room temperature, to be heated to a high elastic state, and temperature control, get the best orientation temperature; Then, using the tensile rod axial tensile parison, later or radial blow compressed air at the same time; Finally, fast cooling bottle. PP plastic bottles can be by two-step extrusion stretch blow molding, injection stretch blow molding step and two step injection stretch blow molding bottles. Two-step extrusion stretch blow molding is made of extrusion forming of tube as the parison, so it is also called cold tube stretch blow molding. Extrusion forming of tube cooled and cut into a predetermined length, storage. Stretch blow molding, the tube billet is holding, in the oven for heating; And then forming the neck thread, closed at the bottom of the pipe end molding for; , along with mandrel tube rounds to stretch/blow molding mold, the core function of tensile bar rod, and injecting compressed air, blowing tube billet in radial direction, finally after heating into the bottle. Biaxially oriented more PP plastic molding by injection stretch blow molding. The injection location, use with typical PP screw injection machine make PP melt, after homogenization. Through the balance of the hot runner system type injection mould, forming for a bottom type tubular billet, and cooling. After the parison with the turntable rotate 90 ° to the thermal control station, with external regulation billet temperature distribution. Parison after transferred to 90 ° to stretch/blow molding station, stretch, blowing into the bottle, and cooling. The bottle is turn 90 ° to take out the station. MORE + recommended product bottle PET health products bottle PET health products bottle PET health products bottle PET care bottle PET health products bottle PET health products bottle PET health products square bottle PET health products plastic PET health products bottle PET health products bottle PET health products bottle PET health products' Bowling bottle 】 PET health products bottles [ New arrival] Pet health products bottles 【 Preview 】 Acrylic health food bottle PS supplement bottle PS health food bottles of special tear cover cover