Rubber sealing strips can be classified according to several methods such as cross-sectional shape, vulcanization method, usage location and purpose, and materials used.

Divided by vulcanization method

(1) Non continuous vulcanization method (cutting the extruded rubber strip to a certain length, placing it in a vulcanization tank for vulcanization, and extruding the semi-finished rubber strip into shape)

Put it into the model for vulcanization);

(2) Continuous vulcanization method (microwave continuous vulcanization method, salt bath continuous vulcanization method, hot air continuous vulcanization method)

Various methods such as chemical methods. A. Microwave continuous vulcanization composite sealing strip: Microwave vulcanization technology was a major challenge in the energy crisis abroad in the 1970s

The production technology that has been widely applied and promoted. The use of microwave continuous vulcanization technology can not only produce metal cores, solid core adhesives, and sponges

Composite rubber strips made of various materials are superior to other continuous vulcanization devices in terms of energy saving and improving work efficiency. This technology is

It is widely recognized as the best process for producing extruded products worldwide. The characteristic of microwave heating is that heat is directly generated inside the object being heated, rather than

By inputting from the outside as usual, not only does it generate heat quickly, but it also distributes evenly, which is beneficial for improving product quality and greatly shortening the heating process

Used time. B. Salt bath continuous vulcanization sealing strip: Salt bath vulcanization uses a salt bath system containing nitrite, which causes significant environmental pollution. It has been gradually improved

Gradually being eliminated.

Sulfurization (Tmax: 450 ° C and Vmax: 60m/s) can also achieve flame pretreatment, greatly improving safety.

2、 Classified by rubber sealing strip material

There are three types of rubber materials for car seals: compact rubber, sponge rubber, and hard rubber.

The hardness of hard rubber can reach Shore A 95. The rubber material used for sealing strips is more resistant to aging, low temperature, water vapor, and chemical corrosion, especially

It is EPDM rubber that is resistant to ozone aging. EPDM can be used with steel strips, steel wire braided strips TPE、 Velvet, flocking, PU coating

Organic silicon coating and other composite materials ensure the waterproof, dustproof, soundproof, heat-insulating, shock-absorbing, wear-resistant, and decorative functions of the car interior and exterior, as well as its own.

In general, EPDM sealing strips can be used stably for more than ten years. Alternatively, chloroprene rubber (CR) with good ozone resistance and aging resistance can be chosen.

Considering the process performance of commonly used rubber materials, it is sometimes necessary to choose and use rubber in combination, such as natural rubber (NR), CR, and styrene butadiene rubber (SBR)

Rubber blends or polyethylene (PE), EPDM, and NR rubber blends are used to improve ozone resistance.