Roll unwind butt splicer
AssigneeMobil Oil Corporation
InventorStephen L. Goulette
Life of this patent
Estimating the term…
Abstract
An apparatus for splicing the trailing end of an unwind depleted web of material to the lead end of a new web of material in a registered and/or abutting mode without the need for any appreciable overlap between the ends of the ceasing or slow-down of the continual forward advance of the web towards a work station, for instance, such as a thermoformer.
Claims7
An apparatus for the joining together of the tail end of an expiring first web being dispensed from a wound roll which is supported on a first reel with the lead end of a new second web of a wound roll which is supported on a second reel;
- comprising:
- means for rotatably supporting said first reel and said second reel;
- means for attaching an adhesive tape to the lead end of said second web and maintaining said lead end and adherent tape in a standby position;
- said apparatus including vertical support columns, said means for attaching said adhesive tape to said second tape including a splicing bar having a vacuum selectively applied thereto for retaining said tape in surface contact therewith, said splicing bar being mounted to be vertically displaceable along said columns;
- a preparation table being pivotably mounted relative to said columns and receiving the lead end of said second web, said splicing bar adhesively contacting said tape with said second web;
- means for sensing the impending expiration of said first web being unwound from said first reel;
- means for causing the tape on said second web to adhesively contact said first web proximate the tail end thereof in response to a signal from said means sensing the impending expiration of said first web and to form a connection between said first and second webs;
- and means for severing the selvage end of said first web immediately upstream of the region of contact of said first web with said adhesive tape so as to produce an abutting joint between said webs;
- said means for attaching said adhesive tape to the lead end of said second tape preparing the lead end of a further web for subsequent joining to the tail end of said second web upon impending expiration of said second web so as to provide a continual feed of abuttingly joined webs.
A method for the joining together of the tail end of an expiring first web being dispensed from a wound roll with the lead end of a new second web of a wound roll;
- comprising:
- continually advancing and dispensing said first web from said wound roll;
- attaching an adhesive tape to the lead end of said second web through the application of a vacuum therebetween and maintaining said lead end and adherent tape in a standby position;
- sensing the impending expiration of said first web being unwound from said roll;
- causing the tape on said second web to be operatively displaced so as to adhesively contact said first web proximate the rail end thereof in response to a signal generated by the sensing of the impending expiration of said first web and forming a connection between said first and second webs;
- severing the selvage end of said first web immediately upstream of the region of contact with said adhesive tape so as to form an abutting joint between said first and second webs;
- and preparing the lead end of a further web and attaching an adhesive tape thereto for subsequent joining to the tail end of said second web upon impending expiration of said second web so as to provide a continual feed of abuttingly joined webs.
Dependencies are inferred from the claim text.