Leaders in Pressure Sensitive
Converting Solutions since 1976
Converting Solutions since 1976
© 2010 CORTAPE INC.
(800) 845-5919
60 Marc Drive
Cuyahoga Falls
Ohio 44223
60 Marc Drive
Cuyahoga Falls
Ohio 44223
Razor Cut Slitting
The key advantage of razor slitting is the low cost and ease of setup. A razor blade is inserted
through the material in one of several ways. The material may pass over two small idler rolls
creating a space where the razor can be inserted; called razor in air. Or the material can wrap
around a special roller with groves cut into it and the razor can pass through the material into
these grooves. Finally the material may pass over a hardened roller and the razor blade may
pass through the material and cut against the roller. The razors are affixed in a variety of ways
and slit width changes are simple. However this slitting method is limited mostly to thin films and
is not as accurate as shear and does not produce as good an edge quality.
The key advantage of razor slitting is the low cost and ease of setup. A razor blade is inserted
through the material in one of several ways. The material may pass over two small idler rolls
creating a space where the razor can be inserted; called razor in air. Or the material can wrap
around a special roller with groves cut into it and the razor can pass through the material into
these grooves. Finally the material may pass over a hardened roller and the razor blade may
pass through the material and cut against the roller. The razors are affixed in a variety of ways
and slit width changes are simple. However this slitting method is limited mostly to thin films and
is not as accurate as shear and does not produce as good an edge quality.
Score Cut Slitting
A slitting method whereby a rotating knife which can be sharpened to various angles is
pressed against a hardened roller. As the web passes through this intersection it is slit.
This method is commonly used for paper slitting and has the advantage of allowing for
quick size changes. In many cases shear slitting is preferred because it can give a better
slit edge and can cause less dusting.
A slitting method whereby a rotating knife which can be sharpened to various angles is
pressed against a hardened roller. As the web passes through this intersection it is slit.
This method is commonly used for paper slitting and has the advantage of allowing for
quick size changes. In many cases shear slitting is preferred because it can give a better
slit edge and can cause less dusting.
Shear Cut Slitting
A slitting method commonly considered preferable both for the quality of the cut edge and the
accuracy of the cut. A round male knife intersects with a round female knife with varying degrees
of depth of intersection and side loading force. Both the depth and the amount of side or shear
force will vary depending of the substrate being slit. In addition key variables to consider are the
diameter of the knife, the type of material it is made from, the angles the cutting edge are ground
to, and the cutting profile of the male knife. The disadvantages of shear slitting are the initial cost
of tooling and the time it takes to perform a set up.
A slitting method commonly considered preferable both for the quality of the cut edge and the
accuracy of the cut. A round male knife intersects with a round female knife with varying degrees
of depth of intersection and side loading force. Both the depth and the amount of side or shear
force will vary depending of the substrate being slit. In addition key variables to consider are the
diameter of the knife, the type of material it is made from, the angles the cutting edge are ground
to, and the cutting profile of the male knife. The disadvantages of shear slitting are the initial cost
of tooling and the time it takes to perform a set up.
Lathe Cut Slitting
Lathe cut slitting is a technique derived from Bologna slitting where a rotating blade cuts
through a rotating log roll of specified length. Over the years Cortape has developed techniques
that do away with the need for a rotating blade, so hence the term Bayonet or Lathe slitting.
Lathe cut slitting is a technique derived from Bologna slitting where a rotating blade cuts
through a rotating log roll of specified length. Over the years Cortape has developed techniques
that do away with the need for a rotating blade, so hence the term Bayonet or Lathe slitting.
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