(1) Overview:

Sealing strip includes window, door, ceiling, decoration, Mosaic, flocking, coating and other varieties. The main use of polyolefin, thermoplastic elastomer. Such as epDM rubber and rubber and TPE thermoplastic elastomer. Its advantages are abrasion resistance, good weather resistance, small friction coefficient, relatively simple manufacturing process. There are many kinds of sealing strips with skeleton, such as steel tape, steel wire braid tape, aluminum tape. The steel belt includes tensile steel belt, punching and cutting steel belt, light plate belt. And the tensile strip is divided into symmetrical tensile strip and asymmetrical tensile strip. Punching steel belt is divided into single bridge punching steel belt and double bridge punching steel belt.

 

(Single bridge punching cutting steel belt rubber sealing strip in use, can not be broken, only along the radial bending; Double bridge punching cut steel tape rubber sealing strip, can be broken in use, can bend in multiple directions.

 

 

 

(2) type, structure and main material of automobile rubber sealing strip

1. Type of sealing strip:

Door sealing strip, glass guide groove sealing strip, door outside sealing strip, radiator sealing strip, engine cover sealing strip, trunk cover sealing strip, drain tank sealing strip, interior decoration sealing strip.

 

2, sealing strip structure:

1, pure rubber sealing strip (including sponge foam sealing strip)

2, compound rubber sealing strip (including sponge foam and dense rubber composite);

3, plastic and metal composite sealing strip;

4, flocking or installation surface treatment sealing strip;

5, plastic and sponge foam, metal multiple repeat sealing strip.

3. Main material of sealing strip:

1, the general use of long chain epDM;

2, thermoplastic epDM elastomer;

3, low friction layer material (low friction thermoplastic material and thermoplastic epDM co-extrusion composite in the surface of the sealing strip).

 

 

 

(3) Performance requirements of automobile sealing strip:

1, conventional properties: such as hardness, tensile strength, tensile elongation, compression permanent deformation, ozone aging resistance, atmospheric aging resistance

Chemical, paint contact interpermeability resistance.

2, finished product performance: including the extrusion force before and after the door frame is closed, insertion and pulling force, the wear resistance of flocking surface, the wear resistance of sealing strip coating.