Talking about foam Silica gel We will think of the application of foam silica gel strips in car doors, windows, body, seats, skylights, engine case, boot and other parts of the car, as well as their waterproof, sealing, sound insulation, dust-proof, antifreeze, shock absorption and other functions Sealing strip As a professional enterprise, we not only focus on each process of sealing strip from mold design, structural manufacturing, processing, assembly, mold trial, trial production and mass production, but also pay great attention to the mold design of foam silicone strip. Since the sealing strip is applied to different parts of the car and has different uses and functions, the structure of the mold is relatively complex. Recently, Ding Gong of the tooling and mold department of the company has prepared relevant knowledge about rubber extrusion mold structure and mold design for us. Let's have a general understanding.

Extrusion characteristics of foam silica gel strip:

In order to better understand the knowledge of rubber extrusion die, let's first get familiar with the characteristics of foam silicone strip extrusion.

(1) The rubber is further mixed and plasticized through the rotation of the extruder screw to ensure that the quality of the extruded semi-finished rubber is more compact and uniform;

(2) It has a wide range of applications. By changing the die, it is possible to extrude rubber profiles of various cross section shapes and preformed semi-finished products for pressing dies;

(3) Extrusion molding products have high speed and production efficiency, which is conducive to automatic production;

(4) Extrusion molding is not limited by length, and can produce ultra long products that cannot be made by molding.

Rubber extruder

Foam silica gel strip extrusion die structure:

At present, rubber extrusion dies can be divided into two types, namely monomer rubber extrusion dies and composite rubber extrusion dies. These two types of extrusion dies have both commonness and individuality. The single extrusion die is generally composed of a panel with simple structure; The compound extrusion die is generally composed of a panel, a runner plate, a splitter plate, and a fiber guide, which is relatively complex. The legend is as follows.
The design of foam silica gel strip extrusion die is a systematic design. Every new product needs to start from the design of the mold. The quality of the mold will test the accuracy of the product, so every detail of the design must be sloppy. Finally, thank Ding Gong for bringing us this knowledge about sealing strip extrusion die.
The foam silica gel strip industry has a large number of consumer enterprises with a small scope, which is difficult to form a climate of scope. It is far from the similar foreign enterprises with billions of yuan of turnover. At the same time, with the gradual recovery of the international economy, the export demand of foam silica gel strips will also increase year by year. After experiencing the blowout market in the previous few years, the foam silica gel strip industry will usher in a period of rapid development.