Classification and material knowledge of EPDM sealing strips
Dec 10,2024
EPDM rubber strips can be divided into two categories according to the data of ethylene propylene diene monomer (EPDM) sealing strips: solid rubber strips and foam rubber strips. The hardness of solid rubber strips is generally between 65 degrees and 90 degrees; the hardness of foam rubber strips is between 15 degrees and 35 degrees, making the products soft with good resilience, suitable for various sealing blocks, gaskets, etc.
Ethylene propylene diene monomer sealing strips can also be divided according to the vulcanization method:
(1) Non-continuous vulcanization method (cutting the extruded rubber strips to a certain length, placing them in a vulcanization tank for vulcanization, and placing the semi-finished extruded rubber strips into a mold for vulcanization);
(2) Continuous vulcanization method (including microwave continuous vulcanization method, salt bath continuous vulcanization method, hot air continuous vulcanization method, etc.). A. Microwave continuous vulcanization composite sealing strips: Microwave vulcanization technology was widely promoted after the energy crisis abroad in the 1970s. This technology not only allows the production of co-extruded products made from various materials such as metal cores, solid rubber, and foam rubber, but also excels in energy saving and improving work efficiency compared to other continuous vulcanization methods. This technology is recognized worldwide as a good process for producing extruded products. The characteristic of microwave heating is that heat is generated directly within the heated object, rather than being input from the outside as in conventional methods, which not only generates heat quickly but also distributes it evenly, helping to improve product quality and significantly shorten the heating time. B. Salt bath continuous vulcanization rubber strips: Salt bath vulcanization uses a salt bath system containing nitrites, which has a significant environmental pollution impact and has gradually been phased out.
Knowledge about sealing rubber strips
Selection of sealing rubber strips for building doors and windows
The installation and use of building doors and windows require sealing rubber strips to achieve a closed seal between the profiles and the glass, as well as between the sash and the frame. Sealing rubber strips play a role in fixing the glass, buffering vibrations, and blocking water and air flow in door and window applications. The thermal insulation and air-tightness of doors and windows have a significant impact on energy conservation and consumption reduction in buildings. Poorly sealed doors and windows can result in heat loss that is 5-6 times greater than that of wall heat loss. The energy efficiency of doors, windows, and curtain walls accounts for about 37-40% of building energy savings. Therefore, rubber strips are an essential functional accessory in the energy efficiency of doors and windows, and their performance and service life should be given attention.
The company specializes in producing EPDM rubber sealing strips, EPDM sponge foam rubber strips, rubber and plastic sealing strips, PVC sealing strips, high temperature resistant silica gel strips, flame retardant sealing strips, dense-sponge-steel core three-composite, four-composite sealing strips, soft plastic-hard plastic composite strips, PVC/CPVC/ABS/TPE material extrusion composite strips and other products.
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