Papermaking belt and method for producing papermaking belt
AssigneeIchikawa Co., Ltd.
InventorsYuya Takamori, Taichi Sakai
Life of this patent
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Abstract
A papermaking belt in which changes in surface properties of the resin layer upon use is suppressed, and a method for making the papermaking belt. Provided is a papermaking belt for use in a papermaking machine, including at least one resin layer including a resin, wherein the surface roughness after contacting the surface of the resin layer with a metal plate having a surface roughness equal to or less than 0.10 μm at a pressure of 100±3 kg/cm2 for 20 hours in warm water bathing at 70±5° C. is equal to or higher than 40% relative to the surface roughness of the surface of the resin layer in a wet state before the contact.
Claims10
A papermaking belt for use in a papermaking machine, the papermaking belt comprising:
- at least one resin layer comprising a resin,
- wherein a surface of the resin layer has, in a wet state, equal to or higher than 40% of a roughness holding rate (%),
- wherein the roughness holding rate (%)=(a surface roughness of the surface after a contact process)/(a surface roughness of the surface in a wet state before the contact process)×100, and
- wherein, in the contact process, the surface of the resin layer is contacted with a metal plate having a surface roughness equal to or less than 0.10 μm at a pressure of 100±3 kg/cm2 for 20 hours in warm water bathing at 70±5° C.
A method for making a papermaking belt comprising:
- a step of forming at least one resin layer,
- wherein at least part of the resin close to the surface of the resin layer to be formed is crosslinked with polycarbodiimide having a structure indicated by the following formula (1):
- [R1—N═C═N]n (1)
- where R1 is, independently for each occurrence, a substituted or unsubstituted bivalent hydrocarbon group having 1 or more and 20 or less carbon atoms, and n is a number of 2.0 or more in number average.
Dependencies are inferred from the claim text.