The application of
bottle blast
mould is more extensive, its has high quality, energy saving, high efficiency, long service life and other characteristics, let more and more manufacturers favored, then, affect the
bottle blast
mould forming what are the factors, the following we understand together.
1. Polymer in the extruder conveying, melting, mixing, pumping out molding for the formation stage of the embryo; in this stage, the factors that affect the wall thickness distribution are:
1). The molecular weight distribution of the material and the average molecular weight;
2). The temperature control system of the blow molding machine and screw speed, which temperature control system includes hopper temperature, the temperature of the barrel 1 zone, 2 zone, 3 zone, 4 zone, flange temperature and storage die head 1 zone The temperature control system includes the hopper temperature, the temperature of the barrel zones 1, 2, 3 and 4, the flange temperature and the temperature of the storage head zone 1, zone 2, 3 and 4.
2. The stage in which the blanks are extruded from the gap between the die lip and the core is called the downstream stage. At this point, the common phenomena are die expansion and die draping. These two phenomena are influenced by the diameter of the
blow moulding machine and the wall thickness control system, which includes the axial wall thickness control system and the circumferential wall thickness control system, which is used to adjust the gap between the mould lip and the mould core.
3. Embryo pre-blowing stage in order to avoid contact, adhesion of the inner surface of the embryo, plus improve the uniformity of the product wall thickness, to pre-blowing expansion of the embryo. In the pre-blowing stage, air is sprayed from below the embryo into the embryo to protect the embryo and reduce its draping and stretching. At this stage, the factors that influence the wall thickness distribution are: pre-blowing pressure and pre-blowing time.
4. During the high pressure blowing stage, the embryo is blown at high pressure to make it fit into the mould cavity and to achieve plastic forming of the product. At this stage, the common phenomenon is that the embryo is deformed by high pressure blowing, and the embryo is deformed by contact with the mould cavity. The factors affecting this situation are: the shrinkage rate of the material; the pressure and time of blowing; the material and structure of the mould; the mould exhaust system and the cooling system of the mould, such as the distribution of cooling water channels, the temperature of the cooling water intake, etc.
Latest blog posts
Custom molds injection molding
Custom molds injection molding is a manufacturing process that involves creating custom molds to produce plastic parts. Injection molding is a popular technique used in various industries such as...
Plastic injection molding companies
Plastic injection molding is a manufacturing process that involves injecting molten plastic into a mold to create a wide range of plastic products. From car parts to medical devices and household items, plastic injection molding is used to create a variet
PET Preform Injection Moulding Machine
PET preform injection molding is a manufacturing process that is used to create PET (polyethylene terephthalate) preforms that can be later blown into bottles, jars, and other containers. This process...
You may like
What are the adverse effects of multiple mold trials for automotive plastic molds?
We would like to introduce to you how the adverse effects of multiple mold trials for automotive plastic molds.If the design of the automotive plastic mould is not well reviewed, the injection...
Surface defects of injection molding products shallow analysis, how to solve in the mold, process?
Visible defects on the surface of injection molded products include dark spots, gloss differences or fogged areas, and surface wrinkling or what is called orange peel. Usually...
9 Q&A on injection molding process
1. briefly describe the operating status of the check valve during plasticization, injection, and pressure-holding, Plasticizing: open, Injection: closed, Holding pressure: closed...
Injection Mold Approval Standards
Purpose: To establish the criteria for approving molds from three aspects: mold structure, quality of rubber parts and requirements of injection molding process, according to which...