Browse Prior Art Database

Thin Film Slit/ Rewind Tool

IP.com Disclosure Number: IPCOM000121258D
Original Publication Date: 1991-Aug-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Busacco, RA: AUTHOR [+4]

Abstract

The Slit/Rewind Tool shown in the figure is used to slit wide web thin material in a roll format into strips 35 mm in width and wind the strips onto reels.

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Thin Film Slit/ Rewind Tool

      The Slit/Rewind Tool shown in the figure is used to slit
wide web thin material in a roll format into strips 35 mm in width
and wind the strips onto reels.

      The advantage of this slit tool over commercially available
slitters is the capability of the tool to slit imaged material to
exact size while holding close tolerances between the cut edge and
image.

      The locating system requires that a .040-inch-wide line be
imaged down the center of the product roll.  This line is produced
using the same artwork as the product design.  Both the guide line
and product image are produced simultaneously at the same expose
operation.  This provides optimum locational accuracy between the
line and product image.

      The material to be slit is fed through the tool by a built-in
roll handler system.  The material passes in front of the steering
sensor which detects an imbalance of reflectivity either side of the
center guide line.  The change in reflectivity results in a positive
or negative voltage signal from the sensor to a servo system which
produces the actual steering.  The servo system will move the rollers
and material in the proper direction to compensate for the imbalance.
The steering system tries to maintain a zero output from the sensor.
The zero point is set to position the material to be slit in proper
alignment with the slit station.  The slit station contains
pre-positioned and fixed male and female kniv...