Self Adhesive Rubber Gasket Material
Notes: Some rubber materials is not suit to sticky & backing adhesive tape & gum.
|Materials ||Hardness ||Working Temperature ||Abrasion Resistance ||Aging Weathering Ozone ||Oil & Grease Resistance ||Electric Insulation |
|NBR Gasket ||30~90° ||-20℃~105℃ ||Good ||Poor||Perfect||Poor|
|Silicon Gasket ||10~90°||-40℃~230℃||Poor ||Perfect||Good||Perfect|
|CR Gasket ||30~80°||-40℃~120℃||Good||Good||Good||Good|
|NR Gasket ||40~80°||-50℃~90℃||Perfect ||Average ||Average||Good|
|FKM Gasket ||50~90°||-5℃~300℃||Perfect||Perfect||Perfect||Average|
Self-adhesive gaskets are generally used where there is a danger of the gasket slipping, or becoming deformed, in the process of being fitted. Adhesives are also used in environments where, for safety reasons, time is a limiting factor (such as in mining or a sub-sea environment); and so gaskets must be fitted very quickly.
Self-adhesives are, therefore, generally used to help keep the gasket in place until the flange bolts are sufficiently tight – to stop slippage or deformity of the gasket during the sealing process.
Adhesive backed gaskets are also used on removable panels (in, for example, electrical switchgear cabinets), where the cabinet requires a gasket to increase IP rating. This allows the panel to be removed quickly for inspection, whereas it would be time consuming and dangerous for the gasket to come off separately.
Self Adhesive Silicone Sleeves & Covers, as a electronic shell skins or housing protective covers with matte smooth coating, can improve electronics or remote controller level, and also have good touch feels, anti-dust & water proof functions. Like Adhesive Backing Handle Grips, Backed Adhesive Electronic Shell & Housing Cover & Sleeves, Membrane Silicone Keyboard Cover, Self Adhesive Silicone Keyboards, Membrane Switches
Self Adhesive Silicon Gasket Manufacturing Process:
1. Making Silicone Rubber Compression Mold.
2. After finishing mold-making, producing silicone rubber samples for test. If dimensions are OK, sending the whole piece of silicone products to factory for dealing with silicone glue & tapes.
If big silicone rubber products, burring firstly, and then deal with silicone glue.
If small silicone rubber parts, generally dealing with silicone glue firstly, and then choose fixture tooling ( die-cutting) to burring. Or removing the big barbs, and then deal with the silicone glue, finally fixture tooling (die-cutting) to de-burring.
3. Knowledge of Self Adhesive Backed Tape Process
a. Paste double sided silicone 3m tape with the anti-adhesive sides of anti-adhesive paper;
b. Cutting the inner round holes by cutting die;
c. Silicone products are coated with silica gel treatment agent; (Notes: silica gel treatment agent should be even/ well-distributed; and should not coat on the surface of silicone products)
d. Accurate placed stick double sides silicone 3m tape, the surface of 3m tepe should be even.
(Notes: should not be a little off; and should not have bubble.)
e. Next Die Cutting for dis-burring & remove silicone rubber flashing
f. After finishing die cutting, check if have less materials or not clear cutting.
g. Test the finished products by 3D projects and amplification instrument
h. Before packaging, check the silicone glue one by one.
Xiamen Better Silicone Co.,Ltd, which not only can make silicone rubber compression mold, plastic injection mold and LSR injection molding, but also can produce different kinds of silicone rubber & plastic components or sealing gasket with adhesive backing:
Nitrile & Buna n adhesive backed gasket & seal
EPDM self adhesive sealing gasket
Neoprene & CR seal with self adhesive double sides tape
Adhesive Backed silicone rubber keypads & membrane keyboard
Backing Adhesive silicone keypads with metal domes
Adhesive silicone rubber sleeves, covers & skins.