Bitumen carpet tile backingThe carpet tile is produced by coating a thick backing layer of a rubber-modified bitumen coating composition onto a secondary backing sheet material and separately coating a first precoat layer comprising a hot melt petroleum resin or bitumen and a second layer comprising a hot melt bitumen composition containing a flexible vinyl adhesive resin, like ethylene vinyl acetate, onto a fibrous back surface of a carpet material having a primary backing sheet containing a fibrous face wear surface and laminating the surface of the second layer to the surface of the backing layer to provide a carpet tile having dimensional stability, good lay flat characteristics and capable of production by an in-line production method. Advantage of using our bitumen in back side of carpet tile:
- better acoustics, air quality and walking comfort
- easy to install, maintain and replace
- excellent safety, creativity and sustainability
- protect the carpet against moisture
How to make bitumen carpet tileThe hot melt bitumen or bitumen-modified composition is applied to this secondary backing sheet in an amount ranging from about 40 to 125, but more typically, 75 to 100 ounces per square yard of the hot melt coating composition on the secondary backing sheet.In the method of producing the carpet tile, the secondary backing sheet is separately coated with the hot melt bitumen or bitumen-modified composition containing the thermoplastic, rubbery polymeric material which is then allowed to cool. Subsequently then, the exposed surface of the bitumen rubbery-containing material coating layer is laminated to the hot, tacky surface of the second precoat layer of the bitumen, resin-containing composition to provide for a laminated carpet tile construction. After the lamination step, the carpet material is subsequently cut into desired carpet tiles and then packaged.
What grade of bitumen is using in back side coating of carpet tile?The best grade to use in back side of carpet tile is oxidized bitumen 105/15 as below specification.
|Bitumen 105/15||Specification||Test method ASTM/EN13304|
|Specific gravity @ 25/25 cg||1.01/1.06||D-70|
|Penetration @ 25 c||10/20||D-5|
|Softening point c||100/110||D-36|
|Loss on heating(wt) %||0.2 max||D-6|
|Flash point c||250 min||D-92|
|Solubility is cs2(wt) %||99.5 max||D-4|