| 摘要 |
The invention relates to a method for producing a roller shell or roller lining (1) of a roller made from a PPDI-based polyurethane plastic. The gree n strength shortcomings are to be overcome as quickly as possible to prevent stress cracks by the fact that the hardener added to the polyurethane short ens the working life to 5 to 60 seconds. The invention also relates to a PPD I polyurethane for the production of a roller shell or roller lining (1) of a roller made by mixing a PPDI prepolymer with a hardener, in particular to carry out the method, wherein it is important that the hardener consists of 60 to 99 % 1,4-butanediol, a maximum of 40 % diamine, and at most 1 % cataly st.
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