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US 6,701,992 B1Granted
Automatic butt splicer for converting machine
AssigneeNew Era Converting Machinery, Inc.
InventorsRobert A. Pasquale, Frank Lembo
Life of this patent
Estimating the term…
Abstract
A butt splicer lengthens a travel distance of a lap-spliced web by a predetermined distance. A pair of knives, spaced apart by the predetermined distance are fired when the lap splice is between them. The severed ends of the web are brought together on a vacuum roll for the application of a tape bridging the upstream and downstream ends. In one embodiment, a second tape is applied to the second side of the web to form a double butt splice.
Claims6
A butt splicer for butt splicing a web which contains a previously performed lap splice, comprising:
- first and second knives;
- said first and second knives being spaced apart a predetermined distance in a web-motion direction;
- means for lengthening a travel distance of said web between working positions of said first and second knives from an original travel distance by an amount equal to said predetermined distance;
- means for energizing said first and second knives when said lap splice passes therebetween to remove a waste portion of said web containing said lap splice;
- means for restoring said original travel distance of said web, whereby severed ends of said web are placed in abutment with each other;
- and
- means for applying a tape bridging said severed ends, whereby a butt splice is produced.
4 more elements
Dependencies are inferred from the claim text.