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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