Firstly, in terms of the simplicity of production and manufacturing, it is recommended to use a horizontal machine to produce two-color silicone tubes or silicone tubes. This type of machine has relatively mature technology and the size is easy to control
If the raw materials of two colors are mixed together, otherwise the extruded product will be an irregular two-color silicone tube.
After the mixing is completed, first remove the die head of the horizontal machine and connect it with another horizontal machine. Connect the discharge port of die head A to the mold storage port of die head B (note that the silicone tube raw material extruded by die head A is of color A, while die head B extrudes the main die head of color B).
At this time, die head A pushes the raw material of color A into the die opening of die B. Meanwhile, the B die head is also pushing the B color, so the two colors are extruded from one die opening. At this time, the two die heads are pushed into the mold at the same speed, and the mold is made according to the customer's design. The two-color silicone tube is divided into an inner mold and an outer mold.
The two die heads extrude two colors without interfering with each other, thus complementing each other to achieve the extrusion of two-color silicone tubes.Of course, with the continuous improvement of technology, there are now silicone rubber two-color integrated extruders available.