BUTYLEN-Tapes
BUTYLEN tapes are polyethylene-butyl rubber composite tapes and are primarily distinguished by the following characteristics:
- Can be cold applied
Self-amalgamating
Sleeve-like coating
Very good mechanical stability
Diffusion-proof
Resistant to chemicals (exceptions: oil/petroleum spirit)
Resistant to aging
High electrical insulation
Corrosion protection tapes
- Asymmetrical three-ply tape
The corrosion protection tapes comprise symmetrical and asymmetrical three-ply tapes and butyl rubber tapes.
The bottom butyl adhesive layer makes these tapes adhere to the metallic surface and the upper adhesive butyl layer makes them amalgamate with the subsequent layer. This results in a sleeve-like coating, which is almost impermeable to water and oxygen.
- Symmetrical three-ply tape
In symmetrical three-ply tapes, the adhesive butyl layers on both sides are of equal thickness.
Asymmetrical three-ply tapes are distinguished by a much thicker adhesive butyl rubber layer on the side facing the metallic material. The outer butyl adhesive layer serves only to amalgamate with the subsequent layer of tape. The thick butyl layer evens out irregularities in the metallic surface.
Co-extruded layer between film and adhesive layers prevents peeling off in adjoining surfaces under peel stress.
- Butyl rubber tape
Pure butyl rubber tapes have only a very thin (25-70µm) polyethylene film as an intermediate layer. This intermediate layer stops the tape from overstretching when spirally wrapped.
These tapes are primarily distinguished by a very plastic and supple behavior and are particularly suited to the wrapping of complex geometrical shapes.
Mechanical protection tapes
To increase mechanical resistance, corrosion protection tapes can be combined with mechanical protection tapes.
Particularly with butyl rubber tapes, this increases resistance to impact and indentation stress.
- Mechanical protection tape
A distinction is made between 2-ply tapes and purely adhesive tapes.
2-ply tapes consist of a polyethylene film and a butyl adhesive layer, both linked by a co-extrusion layer. The butyl adhesive layer amalgamates with the corrosion protection layer to make an impermeable butyl rubber layer. Adhesive tapes display adhesion here only because of the hot adhesive coating.
