Process of using a fixed size rotary cutter to cut products of variable repeat lengths
AssigneeScheffer, Inc.
InventorsBruce Scheffer, Thomas Nadrchal, Eric Lo
Life of this patent
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AssigneeScheffer, Inc.
InventorsBruce Scheffer, Thomas Nadrchal, Eric Lo
Estimating the term…
A process capable of using a fixed repeat rotary cutter for offline finishing of commercial offset web printed products having inconsistencies in repeat length. The process includes transporting a web at a linear speed in a first direction, operating a rotary cutter to singulate the products from the web by forming butt cuts within a waste portion between an adjacent pair of products and transverse to the first direction, causing the products to continue moving in the first direction, causing the products to move in a second direction transverse to the first direction, and then trimming the products to remove the waste portion between adjacent products as the products continue moving in the second direction. Each butt cut is produced with an individual straight knife mounted to a rotating knife cylinder of the rotary cutter, and the rotational speed of the knife cylinder is adjusted so that each butt cut separates pairs of preceding and trailing products as a result of being produced in the waste regions.
An offline finishing process that makes use of a rotary cutter to sever a web into separate products having repeat lengths, the process comprising the steps of:
An offline finishing process that makes use of a fixed repeat rotary cutter to sever a web into separate products having variable repeat lengths, the process comprising the steps of:
Dependencies are inferred from the claim text.