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On the two-color injection molding process

Now the ever-changing consumer product models, both good looks, compact design, but also to quickly meet market demand. Designers generally due to consumer products for different purposes, in different parts of different materials to meet the needs of a particular environment, and to extend the product life and increase aesthetic and practical purpose. This practical design requirements will undoubtedly lead to the production technology also will be complicated, double material injection molding process is to be born of this trend. General dual material products can be monochrome injection molding machine manufacturer, is basically an injection molding machine can be competent, but the process is quite time-consuming post-processing complex, directly affect the quality of the product, the total production cost is not economical. Dual material injection molding process in addition to the injection molding machine to make the appropriate changes, mold design skill is the soul of the whole technology. Mold by rotating shifts, the injection of different materials to achieve synchronization effect.

Mold design is broadly divided into two categories: the first category there are two cavities, by the rotation mode of the semi-die member transferred to another cavity 180, its benefits are the first and second step may be carried out simultaneously; the other One is a single cavity mold together with semi-finished products together rotated 180 degrees. The design is relatively simple, but the production efficiency is reduced accordingly. As the mold or semi-finished products need to turn, so they requested that mold design and injection molding machine more sophisticated.

In addition, due to double material injection variability is very high, so to achieve smooth production, in line with expected, all of the mold design considerations must be synchronized with product design, and market popular dual material injection molding machine specifications are not uniform, mold design lead issue to consider more; with less versatility, mold manufacturers must redouble our care. Double material products generally ABS, PC and other hard plastic with TPE soft plastics mainly for manufacturing tableware, tool handles, case, phone housing and buttons and other products. This allows manufacturers in the technology must pay attention to three points: the integration of the two types of calibration materials, complexity of the product and the injection molding machine. For example, because the relationship between costs or applications may not have good adhesion between the materials used, dual material injection molding is usually more debug work in this regard. More color injection molding injection will continue to focus on the problem of the elite.

China is gradually becoming a global consumer products manufacturing base in southern China in recent years, manufacturers of plastic products need to undertake a number of orders for dual material injection molding techniques, so that dual material injection technology application in China is increasingly widespread.
Two-shot molding mainly in two-shot molding machine feed tube with two sets of molds according to the order made by the two two-shot molding products.
Compared to traditional injection molding, double injection molding process cascode has the following advantages:
A core material can be used to reduce low-viscosity material injection pressure.
2 from environmental considerations, the core material can use recycled secondary materials.
3 Depending on the use of properties, such as thick pieces of finished skin material with a soft material, the core material using a hard material or plastic foam core material can be used to reduce weight.
4 may use lower-quality core materials to reduce costs.
5 cortical material or core material can be expensive to use and having special surface properties, such as anti-electromagnetic interference, high conductivity and other material to increase product performance.
6 appropriate skin material and core material combinations can reduce the molded product residual stress, increase the mechanical strength or surface properties of the product.
7 generates such as marble texture products.

From the multi-color injection molding, co-injection molding of double features and applications can be seen in the future to gradually replace the traditional injection molding process trend. Innovative injection molding technology not only improves the precision injection molding process, providing the difficult process technology, but also opened up the field of injection molding process range. Innovative injection equipment and process, only sufficient to meet the increasingly diversified, high-quality, high value-added product demand.

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