Roll and method for producing a roll

Abstract

The invention relates to a roll (1) for processing nonwoven, textile, plastic or paper material webs, comprising a roll carrier (10) and a roll shell (20), which can rotate around the roller carrier (10), the roll shell (20) having an outer peripheral surface (26) forming the working roll periphery (25) and an inner peripheral surface (27). According to the invention, the roll shell (20) is designed as a homogeneous, self-supporting shell body (21) comprising a thermosetting plastic (22) and having a hardness of 85 to 95 [degree]ShD and a modulus of elasticity in the longitudinal extent of the shell body (21) of at least 2000 and at most 8000 MPa at room temperature and of at least 1000 and at most 6000 MPa at a temperature of 70 DEG C, preferably 120 DEG C.

Description

technical field [0001] The invention relates to a roll for processing nonwoven, textile, plastic or paper product webs, which has a roll housing and a roll sleeve rotatable around the roll housing, the roll sleeve having a forming working The outer peripheral surface of the roller circumference also has an inner peripheral surface. Furthermore, the invention relates to a method for producing such a roller. Background technique [0002] These rollers are mostly used as processing rollers, which form a processing gap with corresponding counter-rollers and run on corresponding equipment for processing non-woven material webs, textile material webs, plastic product webs or paper product webs. In this case, the roller frame used as the roller casing carrier frame typically extends axially through the roller casing, which is generally designed as a tube, wherein the roller casing surrounds a line along the longitudinal direction of the roller casing ( The axis of rotation exten...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this PA sleeve is that the elastic modulus and hardness of the material decrease significantly with the increase of temperature

[0012] The disadvantage of the known lining sleeves is that the lining has to be applied to the sleeve carrier, which means additional manufacturing steps and therefore expensive and costly production

Although the surface quality and dimensional stability of the inner peripheral surface of the roller sleeve play only a secondary role here, this production method, in particular due to the many necessary steps, is expensive and—just as for the additional lining— Does not provide a significant advantage in terms of roll sleeves needing to be replaced

Because in this case the roller sleeve has to be disassembled or removed from the casing in a complex manner, as is the case with the retrofitted lining

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