Rewinder incorporating a tail sealer
AssigneeFabio Perini S.p.A.
InventorGuglielmo Biagiotti
Life of this patent
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Abstract
A method and apparatus for surface winding of a web material to form a roll is described, in which, at the end of the winding of the roll, the web material is severed to form a free tail edge and a free leading edge for the start of a subsequent roll. The completed roll is discharged directly from the winding area onto an adhesive applicator which applies an adhesive to the wound material. The free tail edge is rewound and covers the applied adhesive while the roll is discharged.
Claims28
A method of surface winding a web material to form a roll comprising:
- feeding said web material to a winding cradle;
- winding said web material in said winding cradle to form a wound roll;
- following formation of the wound roll, severing said web material to form a free tail edge on said wound roll and a free leading edge which serves as a start of a winding of a subsequent roll;
- maintaining said free tail edge unwound from said wound roll while discharging said wound roll from said winding cradle onto an adhesive applicator in an absence of a tail edge unwinder or a tail edge positioner;
- applying adhesive from said applicator to an external surface of said web material forming said wound roll;
- winding said free tail edge onto said wound roll to cover said adhesive while discharging said wound roll from said adhesive applicator.
A surface rewinder for winding a continuously fed web material into rolls comprising:
- a winding cradle for forming said rolls;
- severing means constructed and arranged to cause severance of said web material to form a free tail edge and a free leading edge, said severing means being positioned upstream of said winding cradle;
- and
- a discharge surface including an adhesive applicator;
- wherein said discharge surface is positioned immediately downstream of said winding cradle in an absence of a tail edge unwinder or a tail edge positioner;
- and
- said adhesive applicator is positioned to apply adhesive to an exterior surface of said wound roll as said wound roll passes along said discharge surface to adhere said free tail edge to said wound roll.
Dependencies are inferred from the claim text.