Water Bottle

Water Bottle Pet Bottle Manufacturers, Custom Pet Bottles, Pet Bottles suppliers.
Made by: http://www.petbottlemanufacturers.com

The temperature will lead to a small increase in the intrinsic viscosity of the polyester greatly reduced, so the drying time should be as short as possible in order to broaden the operating range. During the drying process, due to the high temperature polyester drying hopper equipment should have good thermal insulation properties and the use of glass fiber insulation, should avoid contact with the dry polyester raw materials and outside air, because polyester raw material will rapidly absorb moisture from the air. For example, the polyester raw material is completely dried and a relative humidity of 35% to 40% after 12min of exposure to air, i.e., a moisture content of 0.005%. Medicinal PET bottle molding method
PET bottle molding methods are extrusion blow molding and injection blow molding two processes. Stretch blow another one-step and two-step process of the points. In the one-step molding, parison molding, cooling, heating, stretching were taken in order to complete the blow and bottle on a machine. Rule two steps by extrusion or injection molding the parison, and the parison was cooled to room temperature, becoming semi-finished products, and then the parison is reheated and stretch blow molding machine become bottle. That parison molding, stretch blow molding is done on the two machines, respectively. One-step injection blow molding PET bottles, injection blow molding equipment requires two molds that parison injection mold and blow mold. The injection molded preform is mainly composed of the parison mold cavity and the mandrel, its parameters are chosen size of each part is correct or not is the key to whether the shape of the bottle. Therefore, the size of the mold preform molding process parameters combined with a reasonable selection. 1, the ratio of the height of its neck PET bottle thread diameter of the mandrel can be determined parison aspect ratio (L / D)
Mandrel aspect ratio generally ranging principle is no more than 10: 1. This is because the parison mold mandrel as a cantilever, and by the effect of high injection pressure during filling.