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REPULPABLE TAPES. Types of splices. butt (by a single coated tape) overlap (by a double coated tape) flying (by a double coated tape). Butt splices. Overlap splices. Flying splice. Types of splices. Butt splices. Butt splices. - PowerPoint PPT Presentation
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REPULPABLE TAPESREPULPABLE TAPES
Types of splicesTypes of splices
butt (by a single coated tape)butt (by a single coated tape)
overlap (by a double coated tape)overlap (by a double coated tape)
flying (by a double coated tape)flying (by a double coated tape)
Types of splicesTypes of splices
Overlap splices
Butt splices
Flying splice
Butt splicesButt splices
Butt splicesButt splices
the splice applied only on one side allows the splice applied only on one side allows thinner splices but the adhesive could get thinner splices but the adhesive could get through the two edges of paper and sticks to through the two edges of paper and sticks to the layer below the layer below
Butt splicesButt splices
applying two tapes (one per side) you avoid applying two tapes (one per side) you avoid this issue and for reducing the thickness you this issue and for reducing the thickness you could use tapes of different widths and/or shift could use tapes of different widths and/or shift them to each otherthem to each other
Butt splicesButt splices
compared to overlap splices, butt splices compared to overlap splices, butt splices usually allow the splice to be thinnerusually allow the splice to be thinner
a thin splice is important because it has to a thin splice is important because it has to pass through narrow gaps of the producing or pass through narrow gaps of the producing or converting machines (for example the gap converting machines (for example the gap between calender rolls)between calender rolls)
Butt splicesButt splices
They are mainly used atThey are mainly used at rereelers and rewindersrereelers and rewinders especially when the splice has to go to especially when the splice has to go to
papermill final Customerpapermill final Customer
Rereeler - An intermediate winding machine for large Rereeler - An intermediate winding machine for large rollsrolls
Rewinder - A winding machine typically composed Rewinder - A winding machine typically composed of an unwind, slitters, and windupof an unwind, slitters, and windup
Butt splicesButt splices
The contact between the 2 reels to be spliced The contact between the 2 reels to be spliced happens while the machine is not running happens while the machine is not running (“STATIC” splice)(“STATIC” splice)
both the application of the tape and the both the application of the tape and the splicing contact are obtained manually splicing contact are obtained manually (“MANUAL” splice)(“MANUAL” splice)
they may stay inside also for a long time they may stay inside also for a long time before the reel is reprocessed before the reel is reprocessed (“PERMANENT” splice)(“PERMANENT” splice)
Butt splicesButt splices
STATIC AND MANUAL: there is no need STATIC AND MANUAL: there is no need for a product with a very high tack; usually for a product with a very high tack; usually also a medium tack is sufficientalso a medium tack is sufficient
PERMANENT: none of the components of PERMANENT: none of the components of the adhesive has to migrate into the the adhesive has to migrate into the spliced paper (by heat and/or pressure); spliced paper (by heat and/or pressure); otherwise we could have a “bleeding” otherwise we could have a “bleeding” effecteffect
Butt splicesButt splices
The following products DO HAVE these The following products DO HAVE these characteristics:characteristics: repulpability according to TAPPI UM 213Arepulpability according to TAPPI UM 213A adhesives without any migrating components adhesives without any migrating components
(no bleeding)(no bleeding) good adhesion/tack balancegood adhesion/tack balance excellent shear resistanceexcellent shear resistance 200°C temperature resistance (for short 200°C temperature resistance (for short
periods)periods)
Butt splices. How to match the right Butt splices. How to match the right productproduct
BN 6368BN 6368 single coated, with a single coated, with a
release liner, standard release liner, standard choicechoice
slit liner, red printed slit liner, red printed
and rally stripe versions and rally stripe versions
Butt splices. How to match the right Butt splices. How to match the right productproduct
BN 6368 THINBN 6368 THIN as BN 6368 but with a as BN 6368 but with a
calandered paper calandered paper backing (lower thickness)backing (lower thickness)
to strenghten the overlap to strenghten the overlap manual splice (safety manual splice (safety splice) splice)
slit liner, red printed and slit liner, red printed and
rally stripe versionsrally stripe versions
Butt splices. How to match the right Butt splices. How to match the right productproduct
BN 6369BN 6369 as BN 6368 but with a as BN 6368 but with a
tissue paper backing tissue paper backing
(very low thickness)(very low thickness) to strenghten the overlap to strenghten the overlap
manual splice (safety manual splice (safety splice) splice)
Butt splices. How to match the right Butt splices. How to match the right productproduct
BN 6370/6375/6376/6373/6383BN 6370/6375/6376/6373/6383• single coated, linerless, siliconized backingsingle coated, linerless, siliconized backing• various thicknesses and coloursvarious thicknesses and colours• used for high tensile strength types of paperused for high tensile strength types of paper• the splice cannot be printed or coated because of the splice cannot be printed or coated because of
the siliconized backing the siliconized backing
Typical butt splicesTypical butt splices
BN 6368/6368TH
BN 6368/6368TH
BN 6369/6368TH
Overlap splicesOverlap splices
simple overlap (by double coated tape)simple overlap (by double coated tape) strengthened overlap (by double coated + strengthened overlap (by double coated +
1 or 2 single coated tapes) 1 or 2 single coated tapes)
Overlap splicesOverlap splices
They are mainly used atThey are mainly used at rereelers and rewinders (like butt splices)rereelers and rewinders (like butt splices) supercalenders supercalenders sheeterssheeters
Overlap splicesOverlap splices
Like butt splices, they are made: Like butt splices, they are made:
while the machine is not running (“STATIC” while the machine is not running (“STATIC” splice)splice)
manually (“MANUAL” splice)manually (“MANUAL” splice)
also, they may stay inside also for a long time also, they may stay inside also for a long time before the reel is reprocessed before the reel is reprocessed (“PERMANENT” splice)(“PERMANENT” splice)
Overlap splicesOverlap splices
STATIC AND MANUAL: there is no need STATIC AND MANUAL: there is no need for a product with a very high tack; usually for a product with a very high tack; usually also a medium tack is sufficientalso a medium tack is sufficient
PERMANENT: none of the components of PERMANENT: none of the components of the adhesive has to migrate into the the adhesive has to migrate into the spliced paper (by heat and/or pressure); spliced paper (by heat and/or pressure); otherwise we could have a “bleeding” otherwise we could have a “bleeding” effecteffect
Overlap splices. How to match the Overlap splices. How to match the right product right product
BN 6367BN 6367 double coated, double coated,
standard choicestandard choice
Overlap splices. How to match the Overlap splices. How to match the right product right product
BN 6365BN 6365 double coated double coated faster repulpability and faster repulpability and
greater adhesion greater adhesion compared to BN 6367compared to BN 6367
Overlap splices. How to match the Overlap splices. How to match the right product right product
BN 6367 HTBN 6367 HT double coateddouble coated higher amount of higher amount of
adhesive (High Tack) adhesive (High Tack) compared to BN 6367 compared to BN 6367
for heavy weight papersfor heavy weight papers for core starting for core starting
applicationsapplications
BN 6367/6365/6367HT
BN 6367/6365/6367HT
BN 6368TH/6369
SIMPLE
STRENGTHENED
Typical overlap splicesTypical overlap splices
Paster tabsPaster tabs
used during automatic splice preparation used during automatic splice preparation to fix the last lap of the reel to fix the last lap of the reel
they are needed to avoid the lifting of the they are needed to avoid the lifting of the last lap during the initial reel rotationlast lap during the initial reel rotation
when there is the splicing contact they when there is the splicing contact they must easily breakmust easily break
Paster tabsPaster tabs
single coatedsingle coated different shapesdifferent shapes
trapezoidtrapezoid butterflybutterfly butterfly rectangular butterfly rectangular