US-12623429-B2 - Drum lagging material

Abstract

Disclosed are lagging materials for use on a driven cylindrical pulley or drum for an industrial machine. A lagging material can comprise a seaming element along the cross-machine direction (CD) of each of the opposing ends of the lagging material for forming a seam for seaming opposing ends of a lagging material when brought together. A lagging material can also comprise coatings that increase the Coefficient of Friction of a lagging material when the lagging material is installed onto the drum such that no additional adhesive is required to keep the lagging on the drum circumference when in operation. Also described is an apparatus for installing an on machine seamable lagging including at least two opposed elongate members, such that when the elongate members are drawn together, the lagging material is stretched into a seamable position to be installed on the drum.

Inventors

• Donald J. FARRELL
• Charles Pinson
• Kaz P. Raczkowski

Assignees

• ALBANY INTERNATIONAL CORP

Dates

Publication Date

20260512

Application Date

20250107

Claims (20)

1. 1 . An on-machine seamable lagging material for a drum for an industrial machine selected from a papermaking machine, nonwovens manufacturing machine, or a corrugator machine for the manufacture of corrugated packaging board, the lagging material comprising: a woven substrate made from synthetic yarns, the woven substrate having a belt-contact side and a drum-contact side; a first coating on the drum-contact side of the woven substrate, wherein the first coating has a higher coefficient of friction than the woven substrate; and a cross-direction seam, the seam configured to couple a first end of the woven substrate to a second end of the woven substrate.
2. 2 . The lagging material of claim 1 , further comprising: a first batt layer in between the woven substrate and the first coating.
3. 3 . The lagging material of claim 2 , further comprising: a second batt layer on top of the belt-contact side of the woven substrate.
4. 4 . The lagging material of claim 3 , wherein at least one of the first batt layer or the second batt layer is needled to the woven substrate.
5. 5 . The lagging material of claim 1 , further comprising: a batt layer on top of the belt-contact side of the woven substrate.
6. 6 . The lagging material of claim 1 , wherein the seam is a clipper hook seam or a spiral link seam.
7. 7 . The lagging material of claim 1 , further comprising: a second coating applied to the belt-contact side of the woven substrate.
8. 8 . The lagging material of claim 7 , further comprising: a first batt layer in between the woven substrate and the first coating, and a second batt layer in between the woven substrate and the second coating.
9. 9 . The lagging material of claim 7 , further comprising: at least one layer of batt in between the woven substrate and the first coating or the second coating.
10. 10 . The lagging material of claim 7 , wherein the first coating and the second coating are the same.
11. 11 . The lagging material of claim 7 , wherein the first coating and the second coating are different.
12. 12 . The lagging material of claim 1 , wherein the lagging material is elastic in a machine direction (MD) of the industrial machine.
13. 13 . The lagging material of claim 1 , wherein the lagging material has a thickness in a range from 0.221 to 0.368 inches.
14. 14 . The lagging material of claim 1 , wherein the lagging material has a thickness in a range from 0.192 inches to 0.320 inches.
15. 15 . The lagging material of claim 1 , wherein the first coating includes an elastomer and is thermoset or thermoplastic.
16. 16 . The lagging material of claim 1 , further comprising a plurality of openings adjacent the cross-direction seam, the plurality of openings configured to receive an installation apparatus when the lagging material is placed around a roll or drum.
17. 17 . The lagging material of claim 16 , wherein the first and second ends of the woven substrate comprise a plurality of openings adjacent the cross-direction seam.
18. 18 . The lagging material of claim 1 , wherein an average static coefficient of friction of the lagging material is Ks=2.81 and an average dynamic coefficient of friction of the lagging material is Kd=2.44.
19. 19 . The lagging material of claim 1 , wherein an average static coefficient of friction of the lagging material is Ks=1.58 and an average dynamic coefficient of friction of the lagging material is Kd=2.41.
20. 20 . The lagging material of claim 1 , further comprising a pin or pintle for coupling the first end of the woven substrate to the second end of the woven substrate.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a division of U.S. patent application Ser. No. 18/939,952 filed Nov. 7, 2024, now U.S. Pat. No. 12,343,956, which is a continuation of U.S. patent application Ser. No. 13/625,533, filed Sep. 24, 2012, now abandoned, which claims priority to U.S. provisional patent application No. 61/538,470, filed Sep. 23, 2011 and to U.S. provisional patent application No. 61/542,657, filed Oct. 3, 2011, each entitled “DRUM LAGGING MATERIAL AND INSTALLATION APPARATUS THEREFOR,” and the entireties of each of which are incorporated herein by reference. BACKGROUND OF THE INVENTION The manufacture of corrugated paper board, or box board, on corrugator machines is well-known in the art. The manufacture of corrugated paper board, or box board, on corrugator machines is well-known in the art. An exemplary description of corrugator machines and their use can be found in U.S. Pat. No. 6,276,420, the entirety of which incorporated by reference hereby. In the manufacture of corrugated paper board, a so-called core paper is heated by steam, which makes it more pliable, and is then fed into a nip formed between a pair of toothed rollers whose teeth mesh, thereby corrugating the core paper in a uniform, undulating pattern. Starch paste is subsequently applied to the crests of the corrugated core paper, which is then mated to a liner paper in a roll nip. There, the corrugated core paper and liner paper are bonded together to form a completed sheet, which can then be further processed as desired. In one machine used for this purpose in the prior art, the nip is formed by one of the toothed or corrugating rolls and a pressure roll. In another machine of a more recent design, the nip is extended in the running direction through the use of a belt instead of a pressure roll. The belt holds the corrugated core paper and liner paper together against the corrugating roll for a significant portion of its circumference. On such machines, corrugator belts pull a continuous sheet of corrugated board first through a heating zone, where an adhesive used to bond layers of the continuous sheet together is dried or cured, and then through a cooling zone. The board is subsequently cut and processed into the desired shape to be used for making boxes. Frictional forces between the corrugator belt, specifically the face, or board, side thereof, and the continuous sheet are primarily responsible for pulling the latter through the machine. Corrugator belts must travel around cylindrical pulleys or drums in operation. Some of these drums are driven, which moves the corrugator belt through the machine as well as the corrugated board formed thereon in a continuous manner. A lagging material covers the drive drum surface in order to, among other things, keep the belt from slipping. Conventional prior art lagging materials are manufactured in endless form and are typically uncoated or coated on one surface. Also, prior art lagging materials are installed on a drum by adhesive bonding, that is, using a very strong rubber contact cement like 3 M 1300 L, which adheres to the lagging material and to the drum surface. This lagging material is used to provide friction between the belt and driver roll in order to pull the belt and board through the machine section. There are many variations of lagging material, for example, woven lagging material, some rubber lagging material, lagging materials having different shaped surfaces, and so on. None of the prior art lagging structures have a seam or are on-machine seamable as the gluing process does not require it. Prior art glued lagging materials must be replaced from time to time, either periodically (e.g., annually) or for other reasons. To replace it, a crew of people has to grind, scrape, and remove all the lagging material and glue off the drum to allow the new glue and lagging to be installed. In most cases, this requires several days of work and machine downtime. SUMMARY OF THE INVENTION In one embodiment, a seaming apparatus to install lagging material designed to be on machine seamable comprises at least two opposed elongate members, each elongate member being structured to be placed longitudinally along the cross-machine direction (CD) of a drum over opposing sides of a seaming area of a lagging material for installation of the lagging material on the drum. A plurality of lagging material engagement members are attached to each opposed elongate member; and a tensioning member is operably engaged with the opposed elongate members for drawing the opposed elongate members together in the machine direction (MD). Each lagging material engagement member is structured to engage a seaming area of the lagging material such that when the elongate members are drawn together, the lagging material is stretched into a seamable position to be installed on the drum surface. In another embodiment, also disclosed is lagging material for use on a cylindrical pulley or drum or