方法和设备

By combining convection cooling and steam treatment, the problems of thickness protection and flatness during fiber web flattening were solved, achieving efficient flattening effect and mechanical stability, while reducing equipment complexity and cost.

CN117355647BActive Publication Date: 2026-07-17VOITH PATENT GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
VOITH PATENT GMBH
Filing Date
2022-04-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to achieve good flatness while preserving the thickness of the fiber web during the flattening process, and existing cooling methods suffer from poor cooling performance or require extremely high calendering loads.

Method used

By combining convection cooling and steam treatment, the fiber web is first cooled to create temperature and humidity gradients, and then leveled in the calendering zone. The temperature gradient is used to maintain the thickness, and the humidity gradient increases the surface softness to achieve smoothness.

Benefits of technology

While maintaining the thickness of the fiber width, it achieves good flatness and mechanical stability, reduces dependence on high-pressure light load, and lowers equipment cost and complexity.

✦ Generated by Eureka AI based on patent content.

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Abstract

用于制造或处理纤维料幅、尤其纸幅或纸板幅的方法和相应设备，所述方法包括以下步骤：a)在干燥部干燥纤维料幅；b)随后通过对流冷却对纤维料幅的至少第一侧进行冷却，其中，在冷却后，纤维料幅在至少第一侧具有65℃及以下、尤其50℃及以下的温度；c)对纤维料幅的至少第一侧施加蒸汽，其中尤其地，在施加蒸汽后，第一侧处的温度为至少70℃、优选超过80℃或90℃；d)在至少一个压光压区中处理纤维料幅。
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