Two-color plastic injection molding process

Two-color or process color plastic injection molding products is the same raw materials were mixed into two different colors prepared by the two same structure, same size, plastics injection molding machine were two colors melt, and then injected through a nozzle molding die within. Molded plastic products with color separation, and blending, or is irregular pattern, and its effect is the appearance of ordinary injection molding and surface modification are not received. Two different specifications melt plastics injection molding machine nozzle injection completed by alternating from the plasticizing cylinder and the nozzle control valve is between the process control. This two-color injection molding machine structure, plastics injection, two plastics injection unit to the same time, with the feeding quantity, the same pressure, with the injection rate to two different colors, melt through the nozzle with a rotating mandrel injected into the molding mold , the way, can be obtained by injection of different patterns on products . The same two sets of specifications, the structure forms the same equipment and plastics injection mold device is composed. This structure follows the working methods of injection molding machine. Plastics injection unit also completed two after the first injection, two sets of the same structure forming mold around the center axis 180 ℃ for, and then the second injection unit by two different colors melt into the molding die within. With this completed in two different colors melt into the same molding die within the movement, get two-color injection molding products . 

Two-color injection molding products, process characteristics are as follows. 

① two-color injection molding machine by the two structures, exactly the same specifications as plastics injection device group. Nozzle according to production needs should have a special structure, or with transposition of the structure can rotate two sets of identical shape mold . Plastics injection, require two sets of plastics injection device in the melt temperature, injection pressure, injection melt feeding quantity and other parameters the same two sets of devices to minimize fluctuations in the difference between the process parameters. 

② two-color injection molding plastic products, plastic injection molding with the ordinary product comparisons, when the melt injection temperature and injection pressure have a higher value of the parameter. Main reason is two-color injection molding mold flow longer, more complex structure, a larger injection melt flow resistance. 

③ two-color injection molding plastic products to choose good thermal stability, low melt viscosity of the raw materials, in order to avoid the high melt temperature, residence time in a long flow path and decomposition. Application more plastic is polyolefin resin material such as polystyrene and ABS. 

④ color plastic products, injection molding, in order to melt two different colors can be good in the molding in the mold of welding, to ensure injection products, molding quality, should be a higher melt temperature, higher mold temperature, the higher the injection pressure and injection rate.

This Information from Wishsino Plastic Mold Making Company.

custom plastic injection molding

Wishsino is an extensive experienced plastic mold maker and custom plastic injection molding inc. They are major in injection molding manufacturing, Plastic Injection Molding, double Plastic Injection Molding, die casting mold and gas assistant plastic mould research for better quality and accommodation of environmental protection. 

Wishsino's high-precision plastic injection mold product and plastic mold making design could be use for numerous manufacturing field including automobile accessories, household accessories, computer accessories and many other high-precision products. Wishsino is committed to quality and leadership. Supplying mold making solutions and universal options for their customer's final satisfaction.

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Injection Mold & molding in China

Wishsino Plastic Mold Maker Company  is a group of teams to serve plastic mold maker and injection molding by OEM\ODM\New Concept Eruption, strong R&D proficiently performs project design and development, engineering and troubleshooting, plastic and metal.
WISHSINO, founded in 2001, located in Shenzhen, southern part of China, neighboring HongKong, very convenient with transportation and shipping.
Wishsino Plastic Mold Maker Company, shown itself to all over the world as professional manufacturer of injection mold and plastic parts :
1. Tooling workshop, equipped with CNC, EDM, lathe, wire-cutting machine, grinding machine, drilling & boring machines, etc, professionally tool and manufacture molds according to customer’s drawing , samples, tooling drawing can be shown to customers before actual tooling which profiles tooling structure, such as, slides, injection gate, cooling system, insert, cavity status.
2. Injection workshop, 24 injection machines in-house, 20 injection machines with partners’power , running from 80T~ 1600T, injection weight running from 60g~13000g, can serve all kinds of plastic material, ABS, PC, PP, PMMA, PVC,EVA, etc, overmolding is also done in-house, quality control and punctual production schedule guarantee the leadtime of transportation and shipping without compromising customer’s expectation!
3. R&D , strongly staffed with veteran engineers who can proficiently perform product design and develop by OEM\ODM\New Concept Eruption, product ranges from auto field, lab accessories, LCD/LED plastic & electronic, and any other fields ,etc, materialize the concept to actual product with lowest cost is the biggest strong-point of R&D’s capacity, quick design and feedback in English help move project to success at proudly quick speed.
4. After-market service, our company owns the principle for customer that quality first, customer first ,we are responsible for all defects or loss resulted from the goods we manufacture and ship, and correct the method to improve all quality up to or beyond customer’s expectation.
5. Stamping partner, can supply all kinds of stamping parts but with competitive price, professional team with strong capacity of sheeting design and manufacture can produce products up to the spec exactly.
Our engineering and mold-making technology including: (click on names for more information).
1. Mold design services,
2. Injection Mold Making services,
3. Casting Mold Making services,
4. Rubber Mold Making services,
5. Plastic Injection Moulding services,
6. Plastic Blow Molding services,

as well as a number of other factors (see Contact Us / Quote for more information).