IP Library Granted Patent US 7,389,716
Granted Patent B2
US 7,389,716 · App. 11/524,774 · Granted Jun 24, 2008

Core reduction apparatus

Assignee: Wausau Paper Towel & Tissue, LLC
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Quick Facts
Patent No.
US 7,389,716
App. No.
11/524,774
Granted
Jun 24, 2008
Kind
B2
Abstract

Apparatus and processes for producing paper roll products with spaced core sections. A core substrate is arranged on a mandrel, and then divided into a plurality of core sections. The core sections are then separated from each other on the mandrel to form gaps between the core sections. Paper web material can then be wound onto the separated core sections to form a log of rolls. The log is then cut into final paper roll products.

Claims (9)

1. An apparatus for forming paper roll products, comprising:

a core slitter assembly having a plurality of slitter mechanisms, each slitter mechanism including a cutting disc and a gripper mechanism, and the slitter mechanisms are mounted to be moveable between a non-cutting position wherein the slitter mechanisms are away from a core substrate, a cutting position wherein the slitter mechanisms are positioned to cut the core substrate into a plurality of core sections, and a gripper engagement position wherein the gripper mechanisms engage the core sections, the plurality of slitter mechanisms are mounted to be moveable in a direction parallel to a longitudinal axis of the core substrate to space apart the core sections along the longitudinal axis.

2. The apparatus according to claim 1 , further comprising a mandrel and an adjustment mechanism, the adjustment mechanism configured to move the slitter mechanisms relative to the mandrel in a direction parallel to the longitudinal axis, and the mandrel configured to support the core substrate.

3. The apparatus according to claim 1 , wherein the gripper mechanisms comprise a plate that is fixed to the slitter mechanism adjacent to the cutting disc.

4. The apparatus according to claim 3 , wherein the plate comprises a flexible material.

5. The apparatus according to claim 3 , wherein the plate extends distally beyond a distal end of the cutting disc.

6. The apparatus according to claim 3 , wherein the gripper mechanisms include friction enhancing members on a surface of the gripper mechanisms that engages the core section.

7. The apparatus according to claim 3 , wherein the gripper mechanisms are configured to hold the core sections in the spaced apart orientation.

8. The apparatus according to claim 1 , wherein the slitter mechanisms are configured to cut the core substrate and to space apart the core sections prior to a webbing material being mounted to the core sections.

Assignments (6)
CHANGE OF NAME Recorded May 18, 2018
From: WAUSAU PAPER TOWEL & TISSUE LLC
To: ESSITY OPERATIONS WAUSAU LLC
Reel/Frame 046184/0799 →
RELEASE OF PATENT SECURITY INTEREST Recorded Jan 28, 2016
From: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
To: WAUSAU PAPER TOWEL & TISSUE, LLC
Reel/Frame 037638/0377 →
RELEASE OF PATENT SECURITY INTEREST Recorded Jan 28, 2016
From: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
To: WAUSAU PAPER TOWEL & TISSUE, LLC
Reel/Frame 037639/0245 →
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Jul 31, 2014
From: WAUSAU PAPER TOWEL & TISSUE, LLC
To: BANK OF AMERICA, N.A., AS AGENT
Reel/Frame 033452/0892 →
SECURITY INTEREST Recorded Jul 30, 2014
From: WAUSAU PAPER TOWEL & TISSUE, LLC
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 033449/0751 →
MERGER Recorded Aug 17, 2007
From: BAY WEST PAPER CORPORATION
To: WAUSAU PAPER TOWEL & TISSUE, LLC
Reel/Frame 019714/0348 →
Continuity (3)
Continuation 1096485700 · Oct 13, 2004
Division 1038443600 · Mar 7, 2003
Related Publication 20070012150A1 · Jan 18, 2007