Forming screen with unperforated longitudinal strips, a machine having the forming screen and method of producing a fibrous web

The forming screen with unperforated separating strips and protective layers addresses the inefficiencies of existing screens by containing the fibrous web within the useful region, simplifying production and enhancing durability, resulting in uniform web formation and reduced maintenance.

US20260168172A1Pending Publication Date: 2026-06-18VOITH PATENT GMBH
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
VOITH PATENT GMBH
Filing Date
2026-02-09
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing forming screens for producing fibrous webs, particularly tissue webs, face challenges in efficient production due to the need for complex woven structures and high maintenance requirements of edge jet nozzles, leading to flawed formations and web breakages.

⚗Method used

A forming screen with unperforated separating strips between the useful region and lateral edges, combined with perforated edge strips and protective layers, ensures containment of the fibrous web within the useful region, eliminating the need for edge jet nozzles and simplifying production.

🎯Benefits of technology

This design allows for quick and easy production with reduced maintenance, achieving uniform web formation and enhanced durability by preventing sheet formation at the edges and minimizing wear, thus improving the overall efficiency and quality of the fibrous web production process.

✦ Generated by Eureka AI based on patent content.

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Abstract

A forming screen has a form of a continuous web extending in a longitudinal direction and has a first lateral edge and a second lateral edge opposite the first lateral edge. The forming screen has a perforated useful region arranged between the first and second lateral edges, on which the fibrous web is formed and which is spaced apart from the first and second lateral edges. The forming screen has a first edge strip arranged between the first lateral edge and the useful region and a second edge strip arranged between the second lateral edge and the useful region. The first and second edge strips are also perforated, and an unperforated first separating strip is arranged between the first edge strip and the useful region and / or an unperforated second separating strip is arranged between the second edge strip and the useful region.
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