Sealing strip can be seen everywhere, what is a sealing strip?

December 15,2021

Sealant strips are products that are designed to seal something, have the functions of waterproofing, heat insulation, dustproof..., etc. Generally, they are designed with various materials such as rubber, metal, plastic or metal rubber composite. Sealing strips are often used in automobiles. According to the requirements of different industries, various industries such as, doors and windows, machinery and equipment are generally divided into three categories: automotive sealing strips, mechanical equipment sealing strips, door and window sealing strips and other products.

What materials are available for the sealing tape?

PVC: English is Polyvinyl Chloride, Chinese is Polyvinyl Chloride.

The third most widely used synthetic plastic polymer is the five general-purpose plastics [PE, PVC, PP, PS- (English: Polystyrene, PS for short), ABS- (acrylonitrile-butadiene-styrene copolymer ( Acrylonitrile Butadiene Styrene (abbreviated as ABS)] is the only chlorine-containing plastic. There are hard and soft forms, and plasticizers are added to form soft PVC. Heat resistance is 60-80 degrees and above 145 degrees, it will release toxic hydrogen chloride and chlorine gas. And other toxic gases, it is considered stable in physical and chemical properties and not easy to be corroded by acids and alkalis. It is recommended to be used in non-heat-resistant products, mostly in waterproof and dust-proof applications; but it is heat-resistant than PE (polyethylene) but not as good as PP (polypropylene). We have six standard specifications of PVC sealant strips, which are designed for composite metal structure with iron frame inside.

SUNPRENE: High-performance soft PVC composite material, which can be called polyvinyl chloride plastic elastomer.

SUNPRENE sealant strips have excellent wear resistance, low compression and permanent deformation, have excellent smooth appearance and easy coloring. They are generally used in building door and window seals and automotive glass sealing materials or internal and external parts. We have three standard specifications. , Designed for composite metal structure, with iron frame inside.

EP SPONGE: English is Ethylene Propylene, Chinese is ethylene propylene rubber, foam material, also known as epoxy foam.

EP SPONGE sealant strips can be used as buffering, insulation, airtight... and other applications. They are often used in the automotive and electronic components industries. In the electronics industry, for example, they are used in packaging circuits, coatings, adhesives, or laminates. …Etc. Generally, the heat resistance is about 150~200 degrees. We have nine standard specifications, which belong to the design of composite metal iron frame.

ECO Plastic: Exclusive Japanese material, made of polypropylene (PP), thermoplastic polyolefin (TPO) and patented special slippery resin (Sube-up).

The development of human civilization has caused serious environmental pollution. It is produced in cooperation with Japanese technology. It is the world’s first technology with a rigid resin plastic frame. It is not only environmentally friendly but also recyclable. The ECO Plastic sealant strip is different from ordinary rubber strips. It will not rust, and can be processed and welded endlessly. We have five standard products, which are integrated products.

Silicone: Silicone resin, the main ingredient is silicon dioxide, which is "silicon" extracted from minerals, which is a material between an organic and an inorganic material.

Silicone products have been very popular in recent years; it is thermosetting, which is different from the thermoplasticity of general plastics, can withstand high temperatures to 200~280 degrees, is not easy to deform and soften, is non-toxic and tasteless, and the key is that it does not contain plasticizers and can return after burning. Natural, very environmentally friendly concept; mainly used in industry, medicine...and other fields. It has the functions of dustproof, waterproof, soundproof, and sealing. We have five standard products of silicone rubber sealing strips, which are composite metal designs with embedded iron wires. Optional with stainless steel, our silicone rubber has the burning behavior requirements of rail vehicle materials that have passed the European railway vehicle standards.

What uses can the adhesive strips be used for?

Car sealant strip

Car sealing strips have important functions such as waterproofing, sealing, sound insulation, shockproof, dustproof... etc. They are widely used in doors, windows, bodies, seats, trunks and electric boxes... etc. Generally, it is recommended to use PVC or EPDM Material.

Railway sealing strip

In recent years, railway accidents are frequent and it is a confined space. When a fire occurs, rescue is very difficult. Therefore, various countries have put forward higher prevention standards for the fire safety of rail transit vehicles. The EU standard EN45545-2 R22/R23 is more stringent. In the fire protection test of the sealant strip, it needs to pass the oxygen index, smoke density, CIT toxicity and other three indicators, and set the three hazard level indexes HL1, HL2, HL3, of which HL3 is the most stringent. It is recommended to use silicone sealant strips. , Our silicone material has passed HL3 grade.

The order of risk levels in the EN45545-2 standard

Evacuation status Vehicle design
General car Autonomous driving Double layer sleeper
Easy to evacuate HL-1 HL-1 HL-1 HL-2
There are evacuation routes
(Safe point is near)
HL-2 HL-2 HL-2 HL-2
There are evacuation routes
(Safe point far away)
HL-2 HL-2 HL-2 HL-3
No evacuation route
(E.g. London Underground)
HL-3 HL-3 HL-3 HL-3

Cabinet equipment sealing tape

Cabinet equipment sealing tape generally needs to be waterproof, fireproof, and anti-collision, and the service life is considered. It is also commonly used in laboratory equipment in the semiconductor, electronics and technology industries or used in production equipment for continuous heat resistance below 180 degrees for more than 24 hours ( The service life is about 2 years), it is recommended to use Silicone sealant strips.

Airtight rubber strips for building doors and windows

Airtight rubber strips for building doors and windows need to have the functions of corrosion resistance, weather resistance, sound insulation, and heat insulation. They are generally used for aluminum alloy doors and windows, plastic steel doors and windows, wooden doors and windows, glass doors and windows... etc. Generally, it is recommended to use Silicone silicone rubber sealing strips .

In conclusion

The demand for sealing tape is increasing day by day. In every corner of life, airtight tapes for building doors and windows, kitchen and cabinet furniture sealing tapes that come in from the door, vehicles and railway sealing tapes that go out are all We are common, believe that all walks of life will use trimming strips, but we have not yet touched it. Just like the semi-conductive sub-technology industry cabinet equipment sealing strips mentioned above, focus on what function you need to find a suitable one. Adhesive strips.
However, the silicone rubber sealing strip (trimming strip) is the most widely used. It is mostly used in the sealing function of cabinet equipment and railway fire doors and windows. It has good heat resistance, chemical resistance, beautiful appearance and flatness, and it is also friendly and environmentally friendly. The standard SRH stainless steel series has passed the highest level of EN45545-2 R22/R23 HL3 standard. Welcome to contact us.
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