US 9,809,404 B2
Systems for unwinding a roll of thermoplastic material interleaved with a porous material, and related methods
Krishna V. Nadella, Redmond, WA (US); and Alan Emerson, Mill Creek, WA (US)
Assigned to Dart Container Corporation, Mason, MI (US)
Appl. No. 14/760,357
Filed by Microgreen Polymers, Inc., Arlington, WA (US)
PCT Filed Jan. 14, 2014, PCT No. PCT/US2014/011534
§ 371(c)(1), (2) Date Jul. 10, 2015,
PCT Pub. No. WO2014/110594, PCT Pub. Date Jul. 17, 2014.
Claims priority of provisional application 61/752,220, filed on Jan. 14, 2013.
Prior Publication US 2015/0353313 A1, Dec. 10, 2015
Int. Cl. B65H 16/04 (2006.01); B65H 18/02 (2006.01); B65H 23/182 (2006.01); B65H 23/32 (2006.01); B65H 23/04 (2006.01); B65H 23/02 (2006.01); B65H 23/18 (2006.01); B65H 23/032 (2006.01); B65H 23/195 (2006.01); B65H 23/198 (2006.01)
CPC B65H 16/04 (2013.01) [B65H 18/026 (2013.01); B65H 23/0204 (2013.01); B65H 23/0328 (2013.01); B65H 23/044 (2013.01); B65H 23/048 (2013.01); B65H 23/1806 (2013.01); B65H 23/1825 (2013.01); B65H 23/198 (2013.01); B65H 23/1955 (2013.01); B65H 23/32 (2013.01); B65H 2301/3251 (2013.01); B65H 2301/4127 (2013.01); B65H 2301/4131 (2013.01); B65H 2701/1718 (2013.01); B65H 2701/1752 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus (un-interleaver) for unwinding a roll of material interleaved with another material, and for separating the materials, the apparatus comprising:
a first platform configured to:
hold a roll of first material interleaved with a second material such that a longitudinal axis of the roll is vertical or substantially vertical, and rotate to unwind the first and second materials from the roll;
a second platform configured to:
hold a roll of the second material, and
rotate to wind the second material onto the roll, wherein while the first platform rotates to unwind the first and second materials, the unwound second material winds onto the roll of the second material held by the second platform;
a tension-sensor operable to generate a signal that represents an amount of tension in the second material as the second material travels from the first platform toward the second platform;
an edge-sensor operable to generate a signal that represents the position of an edge of the second material as the second material travels from the first platform toward the second platform; and
a controller operable to monitor the signal generated by the tension-sensor and the signal generated by the edge-sensor, and in response:
cause the speed at which the second platform rotates to change to maintain a predetermined tension in the second material as the second material travels from the first platform toward the second platform, and
cause the second platform to move relative to the first platform to align the edge of the second material traveling toward the roll of second material with the edge of the second material in the roll.