SCRAPLESSSCRAPLESS WINDINGWINDING

OF THIN FILMS

By CHUCK BAILEY FAUSTEL, INC

or

TAKING THE TAKING THE

ART OUTART OUT

of WINDING of WINDING

GOOD ROLLS *GOOD ROLLS *

*REFERENCE: PAPER BY R. DUANE SMITH, “THE ART OF WINDING GOOD ROLLS”

ROLL QUALITYROLL QUALITY

•• All of us involved in making, All of us involved in making,

processing or using films know of processing or using films know of

the critical importance of making the critical importance of making

good quality rolls and minimizing good quality rolls and minimizing

or eliminating scrap.or eliminating scrap.

••Building rolls of good to excellent Building rolls of good to excellent

quality without waste is everyonequality without waste is everyone’’s s

goal.goal.

••Scrap is costly Scrap is costly –– and not very prettyand not very pretty

••Environmentally unfriendlyEnvironmentally unfriendly

TYPICALLY, A WEB THAT IS TO BETYPICALLY, A WEB THAT IS TO BE WOUND UP WOUND UP

MUST HAVE CERTAIN CHARACTERISTICS:MUST HAVE CERTAIN CHARACTERISTICS:

••PROPER TENSIONPROPER TENSION

••NO WRINKLESNO WRINKLES

••GOOD PROFILEGOOD PROFILE

OUR DISCUSSIONS TODAY AREOUR DISCUSSIONS TODAY ARE

CONCERNED PRIMARILY WITH WINDINGCONCERNED PRIMARILY WITH WINDING

OF THIN FILMS OF THIN FILMS –– LOOSELY DEFINED ASLOOSELY DEFINED AS

LESS THAN 3 MILS.LESS THAN 3 MILS.

SCRAPLESS WINDINGSCRAPLESS WINDING

THE FIRST STEP IN THE FIRST STEP IN

ACHIEVING SCRAPLESS ACHIEVING SCRAPLESS

WINDING IS TO MAKE WINDING IS TO MAKE

GOOD ROLLS GOOD ROLLS ––

as my friend Duane Smith as my friend Duane Smith

sayssays,

SCRAPLESS WINDINGSCRAPLESS WINDING

TO CONSISTENTLY WIND TO CONSISTENTLY WIND

DYNAMITE ROLLS YOU NEEDDYNAMITE ROLLS YOU NEED::

TNTTNT

TNTTNT

T = TENSIONT = TENSION

N = NIPN = NIP

T = TORQUET = TORQUE

To illustrate TNT, letTo illustrate TNT, let’’s take the s take the

example of two drum winders as example of two drum winders as

used in the paper industry:used in the paper industry:RIDER ROLLRIDER ROLL

NIPNIP

FIRST OR FIRST OR

REAR DRUMREAR DRUM

TENSIONTENSION

SECOND ORSECOND OR

FRONT DRUMFRONT DRUM

TORQUETORQUE

UNWINDUNWIND

TENSIONTENSIONWINDING ROLLWINDING ROLL

DRUMSDRUMS

NIPNIP

••T T -- TENSION TENSION ---- FIRST DRUM PULLING FIRST DRUM PULLING

AGAINST THE UNWIND BRAKEAGAINST THE UNWIND BRAKE

••NN –– NIP FORCE NIP FORCE ---- RIDER ROLL RIDER ROLL

INITIALLY, AND AS THE WINDING ROLL INITIALLY, AND AS THE WINDING ROLL

BUILDS, BY THE WEIGHT OF THE ROLL BUILDS, BY THE WEIGHT OF THE ROLL

ACTING ON THE DRUMS.ACTING ON THE DRUMS.

••TT –– TORQUE TORQUE –– SECOND DRUM SECOND DRUM

OVERSPEEDS, TIGHTENING ROLLOVERSPEEDS, TIGHTENING ROLL

••THEREFORE, ALL THE THEREFORE, ALL THE

PARAMETERS OF PARAMETERS OF TNTTNTARE FULLY UTILIZED ON TWOARE FULLY UTILIZED ON TWO--

DRUM WINDERSDRUM WINDERS

ELEMENTARY WINDINGELEMENTARY WINDING

•• THE SIMPLEST THE SIMPLEST

FORM OF WINDING FORM OF WINDING

IS SURFACE IS SURFACE

WINDING WITH A WINDING WITH A

SINGLE DRUM SINGLE DRUM

•• NIPNIP PRESSURE IS PRESSURE IS

THE DOMINANT THE DOMINANT

PARAMETERPARAMETER

““POPE REELPOPE REEL”” –– SINGLE SINGLE

DRUM SURFACE WINDERDRUM SURFACE WINDER

TENSIONTENSION NIPNIP

DRUMDRUMROLLROLL

COMPARECOMPARE TWO DRUM WINDERS TWO DRUM WINDERS

TO A SIMPLE TO A SIMPLE CENTER WINDERCENTER WINDER

••WINDING TORQUE IS DEVELOPED BY DRIVING WINDING TORQUE IS DEVELOPED BY DRIVING

THE CENTER OF THE ROLL/CORE.THE CENTER OF THE ROLL/CORE.

•• TENSIONTENSION IS DEVELOPED BY CONVERTING IS DEVELOPED BY CONVERTING

TORQUE TO A LINEAR FORCE AT THE OUTER TORQUE TO A LINEAR FORCE AT THE OUTER

WRAP OF THE ROLL AS THE WEB PULLS WRAP OF THE ROLL AS THE WEB PULLS

AGAINST A RETARDING FORCEAGAINST A RETARDING FORCE

TENSIONTENSIONTORQUETORQUE

COMPARECOMPARE TWO DRUM WINDERS TWO DRUM WINDERS

TO A SIMPLE TO A SIMPLE CENTER WINDERCENTER WINDER

••CENTER WINDING APPLIES CENTER WINDING APPLIES TENSIONTENSION ONLYONLY

••A LAYA LAY--ON ROLL IS NOT USED ON ROLL IS NOT USED

••NIPNIP FORCE IS NOT AVAILABLEFORCE IS NOT AVAILABLE

TENSIONTENSION

TORQUETORQUE

NIPNIP

••CENTER WINDING WORKS OKAYCENTER WINDING WORKS OKAY

�� WHEN WINDING SMALL ROLLS AT WHEN WINDING SMALL ROLLS AT

RELATIVELY SLOW SPEEDS.RELATIVELY SLOW SPEEDS.

��IF THE WEB INTERLAYER FRICTION IS IF THE WEB INTERLAYER FRICTION IS

RELATIVELY HIGHRELATIVELY HIGH

��BUILDBUILD--UPS ARE SMALL (OD/ID)UPS ARE SMALL (OD/ID)

CENTER WINDERCENTER WINDER

••CENTER WINDING WITH CENTER WINDING WITH NIPNIP, OR A LAYON , OR A LAYON

ROLL, IMPROVES WINDING BY ROLL, IMPROVES WINDING BY ADDING ADDING

NIP FORCE FOR DENSITY CONTROL.NIP FORCE FOR DENSITY CONTROL.

•• AT HIGHER SPEEDS, THE NIP ROLL AT HIGHER SPEEDS, THE NIP ROLL

SQUEEZES SOME AIR OUT OF WINDING SQUEEZES SOME AIR OUT OF WINDING

ROLLROLL

••ONLY TWO PARAMETERS ONLY TWO PARAMETERS

ARE USED: ARE USED:

TENSION TENSION and and NIPNIP..

(AGAIN, TENSION CREATED BY (AGAIN, TENSION CREATED BY CENTERWIND TORQUE)CENTERWIND TORQUE)

CENTER WINDER WITH CENTER WINDER WITH NIPNIP

CENTER WINDINGCENTER WINDING WITH WITH SURFACE SURFACE

ASSISTASSIST or or SURFACE WINDINGSURFACE WINDING WITH WITH

CENTER ASSISTCENTER ASSIST

•• BY ADDING A DRIVEN NIP ROLL, THE WINDING BY ADDING A DRIVEN NIP ROLL, THE WINDING

PROCESS IS FURTHER IMPROVED. PROCESS IS FURTHER IMPROVED.

•• TENSIONTENSION IS PROVIDED BY THE DRIVEN LAYIS PROVIDED BY THE DRIVEN LAY--

ON ON ROLL (PULLING AGAINST AN UPSTREAM ROLL (PULLING AGAINST AN UPSTREAM

NIP OR BRAKE) NIP OR BRAKE)

•• NIPNIP IS PROVIDED BY THE LAYIS PROVIDED BY THE LAY--ON ROLLON ROLL

•• TORQUETORQUE IS PROVIDED BY CENTER WINDINGIS PROVIDED BY CENTER WINDING

ACHIEVING ACHIEVING TNT TNT IN WINDING IN WINDING OF THIN FILMSOF THIN FILMS

•• CENTER WINDING CENTER WINDING ––

TORQUETORQUE

•• SURFACE ASSISTSURFACE ASSIST--

TENSIONTENSION

•• LAYON PRESSURELAYON PRESSURE--

NIPNIP

THROUGH THROUGH TNTTNT WE HAVE THE TOOLS WE HAVE THE TOOLS

TO ENABLE BUILDING ROLLS OF TO ENABLE BUILDING ROLLS OF

EXCELLENT QUALITY BYEXCELLENT QUALITY BY

••ROLL DENSITY CONTROL AND ROLL DENSITY CONTROL AND

THEREFORE, ROLL HARDNESSTHEREFORE, ROLL HARDNESS

••““WOUNDWOUND--ININ”” TENSION CONTROLTENSION CONTROL

((TOO MUCH CENTER TORQUE NEEDED FOR TOO MUCH CENTER TORQUE NEEDED FOR

ADEQUATE TENSION)ADEQUATE TENSION)

••CONTROLLING THE THREE CONTROLLING THE THREE

PARAMETERSPARAMETERS……..

••ALLOWS THE ALLOWS THE

PROCESSOR TO BUILD PROCESSOR TO BUILD

A A ““PERFECTPERFECT”” ROLLROLL

TNTTNT

EXAMPLE OF A TURRET WINDER EXAMPLE OF A TURRET WINDER

WITH A LAYON ROLLERWITH A LAYON ROLLER

Lay-on Roller

Non driven

FOR THIN FILMSFOR THIN FILMS::

•• CENTERCENTER--SURFACE SURFACE -- oror

•• SURFACESURFACE--CENTER WINDINGCENTER WINDING

•• WITH NIP PRESSUREWITH NIP PRESSURE

•• UTILIZING UTILIZING TNTTNT PARAMETERSPARAMETERS

••““PROGRAMMED CONTROLPROGRAMMED CONTROL”” OF OF TNTTNT

TOOLS ENABLES THE BEST IN TOOLS ENABLES THE BEST IN

WINDING.WINDING.

CAN WINDCAN WIND NEARLYNEARLY ““SCRAPLESSSCRAPLESS””..

OTHER FACTORS NEED TO BE OTHER FACTORS NEED TO BE

CONSIDERED TO ACHIEVE CONSIDERED TO ACHIEVE

SCRAPLESS WINDING :SCRAPLESS WINDING :

••NO NO ““FOLDFOLD--BACKBACK”” AT THE COREAT THE CORE

••ELIMINATION OF POORLY WOUND ELIMINATION OF POORLY WOUND

OUTER WRAPSOUTER WRAPS

FOLD BACK AT ROLL CHANGE OR FOLD BACK AT ROLL CHANGE OR

TRANSFERTRANSFER——CAUSES:CAUSES:

1.1. OLDER ROLL CHANGE OR CUTOVER OLDER ROLL CHANGE OR CUTOVER

TECHNIQUES:TECHNIQUES:

•• BUMP AND CUTBUMP AND CUT

•• PLUNGE KNIFEPLUNGE KNIFE

•• CORE ENVELOPERCORE ENVELOPER

HISTORICALLY, THESE METHODS HAD HISTORICALLY, THESE METHODS HAD

FOLD BACK REMNANTS AS A SIDEFOLD BACK REMNANTS AS A SIDE--

EFFECT.EFFECT.

FOLD BACK FOLD BACK

BEGINNINGBEGINNING

AN EXAMPLE OF AN EXAMPLE OF

A PLUNGE A PLUNGE

KNIFE CAUSING KNIFE CAUSING

FOLD BACK ON FOLD BACK ON

A TURRET A TURRET

WINDER ROLL WINDER ROLL

CHANGECHANGE

FOLD BACK CAN CAUSE BAD STARTS ON FOLD BACK CAN CAUSE BAD STARTS ON

A CORE, IN SOME CASES CREATING A CORE, IN SOME CASES CREATING

WASTED MATERIAL YARDS OUT FROM WASTED MATERIAL YARDS OUT FROM

THE CORETHE CORE

A LOT OF DEVELOPMENT EFFORT AND THE CREATION A LOT OF DEVELOPMENT EFFORT AND THE CREATION

OF SOME NOTABLE PATENTS HAVE GONE INTO OF SOME NOTABLE PATENTS HAVE GONE INTO

ELIMINATING OR MINIMIZING FOLD BACKELIMINATING OR MINIMIZING FOLD BACK

THE THE ““STATIONARY KNIFESTATIONARY KNIFE”” DESIGN DESIGN –– PATENT NO. PATENT NO.

4,422,586, by Tetro, WAS A MAJOR IMPROVEMENT 4,422,586, by Tetro, WAS A MAJOR IMPROVEMENT

OVER THE PREVIOUSLY CITED ROLL CHANGE OVER THE PREVIOUSLY CITED ROLL CHANGE

METHODS. METHODS.

STATIONARY KNIFE ROLL STATIONARY KNIFE ROLL

CHANGE PATENTCHANGE PATENT

•• FOLD BACK AT ANY SPEED FOLD BACK AT ANY SPEED

IS NEARLY ELIMINATEDIS NEARLY ELIMINATED

•• ORIGINAL DESIGN HAS BEEN ORIGINAL DESIGN HAS BEEN

IMPROVED UPONIMPROVED UPON

••CUTTING CUTTING

BLADEBLADE

PATENT NO. 5,791,587, by Pasquale, PRESENTS PATENT NO. 5,791,587, by Pasquale, PRESENTS

ANOTHER METHOD OF CUTTING THE WEB AND ANOTHER METHOD OF CUTTING THE WEB AND

TRANSFERRING THE LEADING EDGE TO A NEW TRANSFERRING THE LEADING EDGE TO A NEW

CORE ON A TURRET WINDING APPARATUS.CORE ON A TURRET WINDING APPARATUS.

Cut the web prior to core contact Cut the web prior to core contact

using a traversing knife mounted on using a traversing knife mounted on

a rotary web transport devicea rotary web transport device

ANOTHER PATENT OFFERED A ANOTHER PATENT OFFERED A

DIFFERENT APPROACH TO DIFFERENT APPROACH TO

ELIMINATING FOLD BACKELIMINATING FOLD BACK

•• CUT THE WEB PRIOR TO THE CORE CONTACTCUT THE WEB PRIOR TO THE CORE CONTACT

•• GAPPED KNIFE GAPPED KNIFE –– ““TABTAB--CUTCUT”” TRANSFERS THE WEB TRANSFERS THE WEB

TO THE CORETO THE CORE

CORECORE

KNIFEKNIFE

US Patent #5,368,253 Nov. 29, 1994, Hartley

Gapped Knife; Tab-Cut

A SUBSEQUENT DESIGN UTILIZED A A SUBSEQUENT DESIGN UTILIZED A

STATIC CHARGE TO PIN THE WEB TO STATIC CHARGE TO PIN THE WEB TO

THE LAYON ROLL TO TRANSFER THE LAYON ROLL TO TRANSFER

WITH A CLEAN STRAIGHT CD CUTWITH A CLEAN STRAIGHT CD CUT

STATIC CHARGERSTATIC CHARGER

US Patent #5,823,461 Oct 20,

1998, Hartley, et. al.

Static Tacking (complete cut)

THESE DESIGNS ARE A SIGNIFICANT THESE DESIGNS ARE A SIGNIFICANT

DEPARTURE FROM PRIOR DEPARTURE FROM PRIOR

TECHNOLOGY TECHNOLOGY -- IN SUMMARYIN SUMMARY

•• OLDOLD

•• THE WEB IS SEVERED AT A POINT BETWEEN THE WEB IS SEVERED AT A POINT BETWEEN

THE CORE AND THE WINDING ROLLTHE CORE AND THE WINDING ROLL

•• THE CUT TAKES PLACE AFTER THE WEB HAS THE CUT TAKES PLACE AFTER THE WEB HAS

CONTACTED THE INCOMING CORE. CONTACTED THE INCOMING CORE.

•• NEWNEW

•• WEB IS CUT BEFORE IT ARRIVES AT COREWEB IS CUT BEFORE IT ARRIVES AT CORE

•• NEW IN THE LATTER DESIGNS:NEW IN THE LATTER DESIGNS:

TWO METHODS ARE EMPLOYED TO CONTROL AND TWO METHODS ARE EMPLOYED TO CONTROL AND

DIRECT THE LEADING YET SEVERED EDGE OF DIRECT THE LEADING YET SEVERED EDGE OF

THE WEB TO THE DOWNSTREAM CORE. THE WEB TO THE DOWNSTREAM CORE.

1.1. THE FIRST IS TO LEAVE SMALL, UNCUT THE FIRST IS TO LEAVE SMALL, UNCUT

““TABSTABS”” IN THE WEB, WHICH IN THE WEB, WHICH

SUBSEQUENTLY BREAK AS THE WEB SUBSEQUENTLY BREAK AS THE WEB

ARRIVES AT THE PREARRIVES AT THE PRE--TAPED CORE. TAPED CORE.

2.2. THE SECOND IS TO SEVER THE WEB THE SECOND IS TO SEVER THE WEB

COMPLETELY BUT TO TRANSPORT THE COMPLETELY BUT TO TRANSPORT THE

WEB FROM THE CUT POINT TO THE NEW WEB FROM THE CUT POINT TO THE NEW

CORE BY ATTACHING IT TO A RUBBER CORE BY ATTACHING IT TO A RUBBER

TRANSPORTING ROLL UTILIZING A TRANSPORTING ROLL UTILIZING A

MOMENTARY CHARGE OF STATIC MOMENTARY CHARGE OF STATIC

ELECTRICITY.ELECTRICITY.

MOST OF THE PREVIOUS DESIGNS MOST OF THE PREVIOUS DESIGNS

DEPEND ON A DEPEND ON A TURRETTURRET TO MOVE THE TO MOVE THE

NEW CORE INTO POSITION FOR THE NEW CORE INTO POSITION FOR THE

TRANSFER:TRANSFER:

••TURRET ROTATIONTURRET ROTATION CAUSES THE WINDING ROLL TO CAUSES THE WINDING ROLL TO

LEAVE THE HOME POSITION AND LOSE CONTACT LEAVE THE HOME POSITION AND LOSE CONTACT

WITH THE LAYON ROLL WITH THE LAYON ROLL

••LOSS OF LOSS OF NIP NIP occursoccurs

�� WINDING WEB MAY EXPERIENCE CHANGESWINDING WEB MAY EXPERIENCE CHANGES

��TENSION UPSETTENSION UPSET

��WEB MISALIGNMENTWEB MISALIGNMENT

��BOUNDARY LAYER AIR ENTERS BETWEEN BOUNDARY LAYER AIR ENTERS BETWEEN

WRAPS WRAPS

(ALL OF WHICH ARE BAD!!)(ALL OF WHICH ARE BAD!!)

CUTTING THE WEB COMPLETELY PRIOR TO CUTTING THE WEB COMPLETELY PRIOR TO

ITS ARRIVAL AT THE CORE AND ITS ARRIVAL AT THE CORE AND

TRANSPORTING THE CUT WEB TO THE TRANSPORTING THE CUT WEB TO THE

CORE HAS ALLOWED SOME NEW CORE HAS ALLOWED SOME NEW

CONCEPTS IN WINDINGCONCEPTS IN WINDING

••ELIMINATE THE NEED FOR A TURRETELIMINATE THE NEED FOR A TURRET

••ALLOW APPLICATION OF CONTINUOUS LAYON ALLOW APPLICATION OF CONTINUOUS LAYON

ROLL FOR CONSTANT ROLL FOR CONSTANT NIPNIP

LEADING TO PATENT No. LEADING TO PATENT No.

6,264,1306,264,130

United States Patent United States Patent 6,264,1306,264,130 Hartley, Jr. Hartley, Jr.

July 24, 2001 July 24, 2001 Duplex web roll winding and Duplex web roll winding and

splicing apparatus splicing apparatus

AbstractAbstract

An apparatus and method of winding a continuously An apparatus and method of winding a continuously

moving web, and for splicing and transferring the web moving web, and for splicing and transferring the web

from a first core to a second core with nofrom a first core to a second core with no--foldfold--back or back or

wrinkling of the web material during the splice. The web wrinkling of the web material during the splice. The web

is fed through a first nip point and thereby applied to a is fed through a first nip point and thereby applied to a

laylay--on roll, the layon roll, the lay--on roll further applying the web on roll further applying the web

material onto first and second cores alternatively. An material onto first and second cores alternatively. An

electrostatic charging bar positioned downstream from electrostatic charging bar positioned downstream from

the nip point emits an electrostatic charge onto the web the nip point emits an electrostatic charge onto the web

to temporarily adhere the web to the layto temporarily adhere the web to the lay--on roll. A on roll. A

rotatable cutting knife cooperatively engageable with rotatable cutting knife cooperatively engageable with

the laythe lay--on roll cuts the web at a point downstream from on roll cuts the web at a point downstream from

the electrostatic charging bar but upstream from the the electrostatic charging bar but upstream from the

first and second cores to produce a tail and new leading first and second cores to produce a tail and new leading

edge. The tail continues to be wound about the first roll, edge. The tail continues to be wound about the first roll,

and the new leading edge is affixed to the second roll and the new leading edge is affixed to the second roll

and the web is thereafter wound about the second core. and the web is thereafter wound about the second core.

The first and second cores are each independently The first and second cores are each independently

movable toward and away from the laymovable toward and away from the lay--on roll so the on roll so the

web may be spliced and transferred from the first core web may be spliced and transferred from the first core

to the second core, and alternatively from the second to the second core, and alternatively from the second

core to the first core. core to the first core.

““SCRAPLESSSCRAPLESS”” WINDINGWINDING

•• TACK THE WEB TO THE DRUM WITH STATICTACK THE WEB TO THE DRUM WITH STATIC

•• CLEANLY SEVER THE WEB WITH ROTARY KNIFECLEANLY SEVER THE WEB WITH ROTARY KNIFE

•• LEADING EDGE TRAVELS ON SURFACE DRUM LEADING EDGE TRAVELS ON SURFACE DRUM

TO NEW CORETO NEW CORE

•• WEB IS PRESSED ONTO TAPE AT NEW COREWEB IS PRESSED ONTO TAPE AT NEW CORE

•• NEW ROLL WINDS CONTINUOUSLY WITH NEW ROLL WINDS CONTINUOUSLY WITH NIP NIP

•• SURFACE DRUM WINDS IN SURFACE DRUM WINDS IN TENSIONTENSION

•• SPINDLE WINDS IN ADJUSTABLE SPINDLE WINDS IN ADJUSTABLE TORQUETORQUE

•• WIND WITH WIND WITH TNTTNT TO THE VERY END OF THE TO THE VERY END OF THE

ROLL!!!ROLL!!!

A SCRAPLESS WINDING SYSTEMA SCRAPLESS WINDING SYSTEM

NIP NIP

ROLLROLLSTATIC CHARGING STATIC CHARGING

BARBAR

SURFACE DRUM/LAYON ROLLSURFACE DRUM/LAYON ROLL

ROTARYROTARY KNIFEKNIFE

SPINDLESSPINDLESSPINDLESSPINDLES

SCRAPLESS WINDINGSCRAPLESS WINDING

AN EXAMPLE OF A WINDER DESIGN WITH:AN EXAMPLE OF A WINDER DESIGN WITH:

••CONTINUOUS LAYON NIPCONTINUOUS LAYON NIP

••CENTER WINDING W/ SURFACE ASSISTCENTER WINDING W/ SURFACE ASSIST

SCRAPLESS WINDINGSCRAPLESS WINDING

PILOT WINDER PILOT WINDER

AN EXAMPLE OF A WINDER DESIGN WITH:AN EXAMPLE OF A WINDER DESIGN WITH:

••CONTINUOUS LAYON NIPCONTINUOUS LAYON NIP

••CENTER WINDING W/ SURFACE ASSISTCENTER WINDING W/ SURFACE ASSIST

ROTARY ROTARY

KNIFEKNIFE

CONTINUOUS CONTINUOUS

LAYONLAYON

SPINDLESPINDLE

SCRAPLESS WINDINGSCRAPLESS WINDING

KEYS TO DESIGNKEYS TO DESIGN

••NO TURRETNO TURRET

••ROTARY KNIFE ROTARY KNIFE

��SERVO DRIVESERVO DRIVE

••CONTINUOUS LAYON ROLLCONTINUOUS LAYON ROLL

��SERVO DRIVESERVO DRIVE

••SURFACE AND CENTER WINDINGSURFACE AND CENTER WINDING

““SCRAPLESSSCRAPLESS”” WINDINGWINDING

New application of the timeNew application of the time--tested tested TNT TNT principle principle

gives the processor:gives the processor:

•• ability to layability to lay--down a wrinkle free core startdown a wrinkle free core start

•• ability to wind to the last wrap in contact with the layability to wind to the last wrap in contact with the lay--on rollon roll

•• success in winding films that have proved troublesome or success in winding films that have proved troublesome or

impossible for conventional turret windersimpossible for conventional turret winders

•• superior roll quality and structure providing a desirable hard superior roll quality and structure providing a desirable hard

start and transitioning to a desirable finish. start and transitioning to a desirable finish.

•• rolls that do not telescope or dish, do not suffer from starringrolls that do not telescope or dish, do not suffer from starring

and and have no wastehave no waste..

•• inin--line slitting to the extent not previously thought possible line slitting to the extent not previously thought possible

on a continuous type winder.on a continuous type winder.

SCRAPLESS WINDINGSCRAPLESS WINDING--

A REALITY!!A REALITY!!

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