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Improved Zoned Vacuum Roll Design

IP.com Disclosure Number: IPCOM000028558D
Publication Date: 2004-May-20
Document File: 2 page(s) / 65K

Publishing Venue

The IP.com Prior Art Database

Related People

Michael Haasl: AUTHOR [+2]

Related Documents

6113059: PATENT [+2]

Abstract

Extruded aluminum rolls can be used to make improved vacuum rolls for web handling. In particular, WINERTIA® extruded aluminum cores from Engineered Metals (Edgerton, Wisconsin) have been successfully modified to make lower-cost zoned vacuum rolls useful in various web handling operations.

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Improved Zoned Vacuum Roll Design

Michael Haasl and Chris Hadley Kimberly-Clark Corporation

Ogden, Utah

Abstract

Extruded aluminum rolls can be used to make improved vacuum rolls for web handling. In particular, WINERTIA® extruded aluminum cores from Engineered Metals (Edgerton, Wisconsin) have been successfully modified to make lower-cost zoned vacuum rolls useful in various web handling operations.

Background Zoned vacuum rolls, which apply vacuum over a selected portion of a vacuum roll, are used for web handling and other application in numerous industries. For example, in the manufacture of disposable absorbent articles such as those manufactured by Kimberly-Clark Corporation (Dallas, Texas), zoned vacuum rolls may be used to assist in the automated assembly of com- ponents. Absorbent article manufacture involving zoned vacuum rolls is described in US Pat. No. 6,022,443, "Method and Apparatus for Placing Discrete Parts onto a Moving Web," issued Feb. 8, 2000 to Rajala and Makovec, and in US Pat. No. 5,827,387, "Method of Making an Absorbent Article Having Leg Cuffs Combined with Containment Flaps," issued Oct. 27, 1998 to Reynolds and Vogt, and in various other sources.

In some instances previous zoned vacuum roll designs have required significant machining during the manufacturing process, which can result in high costs and longer lead times. There is a need for more efficient methods of manufacturing such rolls.

Improved Vacuum Rolls from Extruded Aluminum Cores Improvements in zoned vacuum roll design have been achieved by modifying extruded aluminum cores produced by Engineered Metals (Edgerton, Wisconsin) under the WINERTIA® brand name. Through the use of such extruded aluminum rolls, the need for extensive machining has been reduced, resulting in significantly decreased cost.

WINERTIA® extruded aluminum cores are described at http://www.winertia.net/winertia.html 1, from which Figure 1 below is taken, and in more detail in US Pat. No. 6,113,059, "Dead Shaft Idler," issued to Couillard Sept. 5, 2000. Figure 1 below is taken from the Couillard patent, illustrating a typical extruded core geometry.

The aluminum extruded roll consists of inner and outer shells that are connected by a series of fins (support ribs). This creates isolated axial chambers between the two shells. In this improved vacuum roll, holes were drilled in the radial direction through the outer shell to access the indi...