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【Zhenshun Plastic】Injection technology popular science articles!
【Zhenshun Plastic】Injection technology popular science articles!
- Categories:Industry knowledge
- Author:小程
- Origin:网络
- Time of issue:2021-01-29 15:26
- Views:
(Summary description)Plastic is a material with natural or synthetic resin as the main component and various additives, which can be molded into a certain shape under certain temperature and pressure conditions, and keep the shape unchanged at room temperature. As a polymer compound, plastic has various processing methods. Next, let’s take a look at how plastic is injection molded!
【Zhenshun Plastic】Injection technology popular science articles!
(Summary description)Plastic is a material with natural or synthetic resin as the main component and various additives, which can be molded into a certain shape under certain temperature and pressure conditions, and keep the shape unchanged at room temperature. As a polymer compound, plastic has various processing methods. Next, let’s take a look at how plastic is injection molded!
- Categories:Industry knowledge
- Author:小程
- Origin:网络
- Time of issue:2021-01-29 15:26
- Views:
Plastic is a material with natural or synthetic resin as the main component and various additives, which can be molded into a certain shape under certain temperature and pressure conditions, and keep the shape unchanged at room temperature. As a polymer compound, plastic has various processing methods. Next, let’s take a look at how plastic is injection molded!
InjectionMolding
The main method of processing plastic is injection molding. In this process, the plastic is placed in a hopper, and then the hopper heats and injects the plastic, which is pushed through a long chamber and a reciprocating screw. After that, it is softened into a fluid state. The nozzle is located at the end of the cavity, and the fluid plastic is forced to cool through the nozzle, closing the mold. When the plastic cools and solidifies, the semi-finished product exits the press.
PlasticExtrusion
Plastic extrusion is a mass manufacturing method in which plastic raw materials are melted to form a continuous contour. The extrusion process is usually used to make films, continuous sheets, tubes, profiles, rods, outer filaments, filaments, threads, and cables. Together with the injection molding machine, the dried plastic is placed in a hopper and sent into a long heating chamber. At the end of the cavity, the material is pressed out of a small opening, or mold in the shape of the desired final product. After the plastic leaves the mold, it is placed on a conveyor belt to cool. A blower is sometimes used in this process to help it cool down.
BlowMolding
Blow molding refers to hollow blow molding (also known as blow molding). The hollow blow molding process is to place the semi-molten tube (parison) obtained by extrusion or injection molding in various shapes of molds. Compressed air is blown into it to inflate it to make it close to the wall of the cavity, and then it is cooled and demolded to obtain a molding method for hollow products. The molding process includes the manufacture of plastic parisons and the blow molding of the parisons.
Thermoforming
A special plastic processing method for processing thermoplastic plastic sheets into various products. The sheet material is clamped on the frame and heated to a softened state, and under the action of external force, it is made to close to the molding surface of the mold to obtain a shape similar to the molding surface. After cooling and shaping, the finished product is ready to be finished.
Calendering
Calendering is also called calendering, the last process of heavy leather finishing. The plasticity of the fiber under mixed heat conditions is used to flatten the surface of the fabric or roll out parallel fine diagonal lines to enhance the finishing process of fabric gloss. After the material is fed, it is heated and melted, then formed into a sheet or film, and then cooled and rolled up.
Pultrusion
In extrusion molding, the blank is extruded from the orifice or gap of the die under the action of three-way uneven compressive stress to reduce the cross-sectional area and increase the length. The processing method that becomes the required product is called extrusion. This processing of the blank Called extrusion molding.
VacuumForming
Vacuum forming is often called blister, which is a kind of plastic processing technology. The main principle is to heat and soften a flat plastic hard sheet, then use vacuum to absorb it on the surface of the mold and cool it to form.
RotationalMolding
Rotational molding is also called rotational molding, rotational molding, rotational molding, rotational casting, rotational molding, etc. The molding method is to first add the measured plastic (liquid or powder) into the mold, and after the mold is closed, make it Rotate along two vertical rotation axes while heating the mold. Under the action of gravity and thermal energy, the plastic raw materials in the mold are gradually uniformly coated and melted and adhered to the entire surface of the cavity, forming the same shape as the cavity , And then cooling, shaping and demolding to make products with the desired shape. In the entire molding process of the rotational molding process, the plastic is hardly affected by any external force except for the effect of gravity.
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