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US3794256A Expired / Lapsed US ⏱️ 0.0 years remaining

Process of transferring a traveling web from a pull roll to an empty core

Assignee: EIDP Inc
•
Filing: 1971-11-17
•
Granted: 1974-02-26
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Expires: 1991-11-17
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Abstract

Abstract In a process for continuously winding a web onto a core, the steps of transferring the web from a full roll to an empty core while significantly minimizing stub roll waste by advancing an empty positively driven core into the path of the traveling web so that the web partially wraps the empty core; deflecting the web to substantially increase the web wrap around the empty core; removing the driving torque from the empty core permitting the empty core to idle; severing the web near the surface of the empty core establishing a leading edge on the traveling web that follows the surface of the empty core as it idly rotates; and thereafter applying torque to positively drive the empty core forming a new roll.

Inventors

  • 👤 K Schwarz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 14:20
CPC Classifications
B; B65; B65H; B65H19/00; B65H19/22; B65H19/2207; B65H19/2223; B65H2408/00; B65H2408/20; B65H2408/23; B65H2408/231; B65H2408/2315; B65H2408/23155

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 266 words
In a process for continuously winding a web, the steps of transferring the advancing web from a fully wound roll to an empty core wherein the cores are mounted on a turret with each core rotatable about its own axis and also rotatable about the common turret axis, said transferring steps consisting essentially of: a. driving a first core about its axis to wind the web onto the first core and form a roll; b. driving an empty second core about its axis; c. rotating the turret to advance the second core into the path of the web so that the traveling web partially wraps the rotating second core while spanning the distance between and traveling to the roll forming on the first core; d. deflecting a portion of the web between the first and second cores substantially increasing the web wrap around the second core; e. removing the driving torque from the second core permitting the second core to idle while the web continues to travel to the first core; f. severing the web between the first core and the second core, in the deflected portion wrapped around and near the surface of the second core, so as to terminate the web traveling to the first core and to establish a leading edge on the traveling web; g. urging the leading edge on the web to follow the surface of the second core as the second core idly rotates; and thereafter h. applying torque to positively drive the newly started second core initiating the formation of a new roll of web on the second core.
Claim 2
Dependent Claim 266 words
In a process for continuously winding a web, the steps of transferring the advancing web from a fully wound roll to an empty core wherein the cores are mounted on a turret with each core rotatable about its own axis and also rotatable about the common turret axis, said transferring steps consisting essentially of: a. driving a first core about its axis to wind the web onto the first core and form a roll; b. driving an empty second core about its axis; c. rotating the turret to advance the second core into the path of the web so that the traveling web partially wraps the rotating second core while spanning the distance between and traveling to the roll forming on the first core; d. deflecting a portion of the web between the first and second cores substantially increasing the web wrap around the second core; e. removing the driving torque from the second core permitting the second core to idle while the web continues to travel to the first core; f. severing the web between the first core and the second core, in the deflected portion wrapped around and near the surface of the second core, so as to terminate the web traveling to the first core and to establish a leading edge on the traveling web; g. urging the leading edge on the web to follow the surface of the second core as the second core idly rotates; and thereafter h. applying torque to positively drive the newly started second core initiating the formation of a new roll of web on the second core.
Claim 3
Dependent Claim 10 words
The process of claim 1 wherein the web is cellophane.
Claim 4
Dependent Claim 11 words
The process of claim 1 wherein the web is a plastic.
Claim 5
Dependent Claim 10 words
The process of claim 1 wherein the web is paper.

References Cited (Backward Citations)

US2787427A Cited
US3377032A Cited
US3472462A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-25 1977-08-27 1978-02-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-25 1981-08-27 1982-02-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-25 1985-08-27 1986-02-26 $7700.00 Window Closed / Lapsed

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