One sort of injection mold technique is known as double shot plastic injection molding, also known as Two Shot Molding, Double Shot Molding, Double-Color Mold, Multi-Material, or Multi-Component Injection Mold. Dual shot injection molding uses two distinct plastic types and hues.
Dual Shot Molding is a specialty of CN Mould & Plastic Limited. Here, we always have a qualified staff available to assist you in conducting evaluations and developing customized two shot injection Molding services project solutions for you. We are able to offer the best pricing Dual Shot Molding services solution with high-quality goods based on your part design. Our competitive advantage for two shot plastic injection molding is our competitive pricing and rapid lead times.
For instance, the Dual Shot Mold machine is used to create the Dual Shot shell from two different materials. Before injecting the red material to cover the hard one, inject the black PC first to create the hard housing. The process of two component injection moulding combines two materials.
HOW DOES Dual Shot Molding Work?
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2 shot plastic injection molding uses two sets of molds, one of which is put on the machine's fixed mold plate and has the injection gate on one side, and the other of which is installed on the moving mold's rotational plate and has the mold ejection on the opposite side.
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The two sets of molds typically have identical back dies but distinct front dies. The fixed and moving molds of the injection molding machine are opened when the first material is injected into the first mold, and the rotating plate of the moving mold then rotates 180 degrees with the back mold of the two molds. At this point, the rear mold's semi-finished products are not pushed out; instead, the mold is closed to allow for the injection molding of the second material (the first material is still being injected into the second mold's semi-finished products during this process).
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Open the fixed and moving dies after machine insulation and cooling, then expel the finished die from the moving die of the first die. This process involves forming cycles, and each forming cycle will result in the development of both a semi-finished product and a final product.
DIFFERENCE BETWEEN Double Shot Molding And Overmolding
First, Overmolding put the product into a mold made from a different set of molds using a regular injection molding machine to make a second injection molding. Two sets of molds are typically used to perform Overmolding. In a particular two-color/material injection molding machine, Double Shot Molding is the one-time injection molding of two different types of plastics. When two types of plastic are used in the same injection molding machine, only one mold product is created. Consequently, Double Shot Molding often involves a set of molds and calls for a unique Double Shot Molding equipment.
The plastic is in a molten state during the whole Double Shot Molding process, preventing cooling and shrinking, giving the substrate and covering materials an opportunity to develop a strong chemical bond that will increase strength and decrease burr risk.
The Double Shot Molding cycle is shorter, more effective, and higher quality than the Overmolding since it does not require the insert procedure.
ADVANTAGES OF
Dual Shot Molding
Dual Shot Molding, which involves injecting items with various plastics on the inner and outer layers, can be converted into one-step molding in place of secondary processing.
Due to the availability of many color combinations and the ability to use low-viscosity raw materials in the core material, Dual Shot Molding can breathe new life into outdated products.
Dual Shot Molding places greater demands on injection molding machines in terms of product correctness, beautiful appearance, better integration of diverse colors, and product molding cycle. Dual Shot Molding is not just a straightforward mixing of two or more colors of plastics.
The Dual Shot Molding injection machine may also be used to create items in monochrome, serving a variety of roles and offering comprehensive services. To cut the costs, the core material might be made from low-cost raw materials or recycled waste. To enhance the functionality of the product, high-quality leather with unique surface qualities or anti-electromagnetic interference can be utilized.
PROCESS FOR
Dual Shot Molding
Process for Dual Shot Molding
Dual Shot Molding processing and injection molding need numerous challenging steps, which are generally divided into two steps:
- Stage Filling. When the mold is sealed and starts to fill in upto 95% in the cavity. The injection rate should be kept within a manageable range during this time. In general, molding efficiency increases with decreasing filling time.
- Pressure Maintenance. While the holding stage is essentially the last step, the filling stage is the initial step to begin manufacturing. At this point, pressure should be applied continually to condense the melt and increase plastic density while preventing shrinkage. The best effect can be obtained by maintaining this stage until the plastic molding process is complete and the gate is solidified and sealed.
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