Papermaking

Pressboard is a cellulose product which is based on the traditional craftsmanship of "Papermaking". KREMPEL pressboard sheets are manufactured at the Zwönitz Plant, and KREMPEL presspaper reels at the Thalheim Plant and at the Kuppenheim Plant. For special applications, we coat the presspaper reels with synthetic resins or process this to corrugated board.

KREMPEL pressboard sheet is manufactured using our special cardboard machinery. A mixture processed from cellulose fibres and water is dehydrated to a fibrous non-woven and rolled up on drums. The wound non-woven is then cut once the desired thickness has been built. The resulting pressboard intermediate is pressed, dried and calendered to pressboard sheets in accordance with specifications.

KREMPEL pressboard sheets are used mainly in oil-filled transformers and as stamped parts with great success.

KREMPEL presspaper reels are manufactured in a continuously running process on our specially developed papermaking machines.

The purified fibre-water mixture is applied to the circular sieve and couched by filtration to give the wet multiple-layer fibrous non-woven. Water is then mechanically removed and the fibrous structure dried by hot air. The bonding of the fibrous non-woven is realised not by adding chemicals, but rather by natural hydrogen bonding only. KREMPEL presspaper products are thus a purely natural product. Following the drying process, the raw presspaper is smoothed and compacted between the rollers of our super calenders to produce presspaper reels in accordance with specifications.

KREMPEL presspaper reels are used mainly in oil-filled transformers and capacitors, as well as in electric motors, with great success.