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injection model
injection model
Product Details

Rubber non-standard parts injection molding refers to the injection molding machine produced by a variety of injection molding products collectively referred to as injection parts, including a variety of packaging, parts, etc. Mainly by the polyethylene or polypropylene and other materials and add a variety of organic solvents made after Rubber non-standard parts.
brief introduction
The choice of plastic parts depends on the type of plastic (thermoplastic or thermosetting), the initial form and the shape and size of the product. The injection molding is generally molded, conveyed, and injection molded. Lamination, molding and thermoforming are So that the plastic molding in the plane of the above methods can be used for rubber processing.In addition, there are liquid monomer or polymer as raw materials, etc. In these methods, to extrusion and injection molding with the most and most The basic molding method.
Process parameters The main process parameters of injection molded parts include:
1. Cylinder temperature: The melt temperature is important and the temperature of the feed cylinder used is only indicative. The melt temperature can be measured at the nozzle or measured using the air jet method. The temperature of the feed cylinder depends on The temperature of the melt, the speed of the screw, the back pressure, the amount of charge, and the injection molding cycle. If you do not have the experience of processing a particular level of plastic, start with the lowest setting. For easy control, Not all are set to the same temperature. If the operation is long or at high temperatures, set the temperature in the first zone to a lower value, which will prevent the plastic from melting and shunting prematurely. Hydraulic oil, hopper closers, molds and shot tanks are at the correct temperature.
2. Melt temperature: the melt temperature on the melt flow performance plays a major role, because the plastic does not have a specific melting point, the so-called melting point is a molten state of the temperature, plastic molecular chain structure and composition of different, and its flow Sexual effects are also different, rigid molecular chain by the temperature more obvious, such as PC, PPS, etc., and flexible molecular chains such as: PA, PP, PE and other liquidity by changing the temperature is not obvious, it should be based on different materials Reasonable injection molding temperature.
3. Mold temperature: Some plastic materials due to high crystallization temperature, slow crystallization, the need for higher mold temperature, and some due to control the size and deformation, or the need for stripping, to a higher temperature or lower temperature, such as PC Requirements for more than 60 degrees, and PPS in order to achieve a better appearance and improve the mobility, mold temperature sometimes need more than 160 degrees, so the mold temperature to improve the appearance of the product, deformation, size, plastic mold has an immeasurable role.
4. Injection pressure: melt to overcome the resistance required to advance, directly affect the product size, weight and deformation, different plastic products need different injection pressure, for PA, PP and other materials, increase the pressure will make its mobility Significant improvement in the size of the injection pressure determines the density of the product, that is, the appearance of gloss. It does not have a fixed value, and the more difficult to fill the mold, the pressure of injection molded parts also increased.

热门标签:Injection, the wholesale, manufacturers, build, processing, large ultra-thick wide, which is good, Shanghai, Hangzhou, Suzhou, Ningbo, Changzhou, Wuxi

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