What is bicolor injection?

The so-called two-color injection molding refers to the molding method of injecting two different colors of plastic into the same mold. It can make the plastic parts have two different colors, and make the plastic parts present a regular pattern or irregular cloud pattern color to improve the practicality and aesthetics of the plastic parts.

1. Necessary conditions.

Two-color injection molding mating materials must meet two basic compatibility conditions, adhesive compatibility and injection molding process compatibility. In addition, the following requirements must be met:

Injection unit, parallel to the same direction, parallel to the opposite, horizontal and vertical L-shaped, Y-shaped single-cylinder injection structure;

Mixed nozzles, patterns, waves, flow marks, gradients, interlayers and other special nozzles;

Clamp, standard type, vertical turntable type, horizontal turntable type, shaft type, manipulator rotation type and other mechanisms;

In addition to the standard hydraulic motor drive, there is also an ESD (ElectricScrewdrive) electric feeding structure;

The oil circuit is designed with ACC accumulating high-speed injection and closed circuit.

2. Advantages

Compared with traditional injection molding, the two-component co-injection molding process has the following advantages:

Low viscosity material can be used to reduce injection pressure;

Considering environmental protection, recycled secondary materials can be used as core materials;

According to different usage characteristics, such as thick finished leather material use soft material, core material use hard material or core material can use foam plastic to reduce weight;

Low-quality core materials can be used to reduce costs;

Leather material or core material can use expensive and special surface properties, such as anti-electromagnetic wave interference, high conductivity and other materials to improve product performance;

Appropriate skin material and core material can reduce the residual stress of the molded product and increase the mechanical strength or surface properties of the product;

Products such as marble texture.