EP0572384A1 - Method for splicing a running web - Google Patents

Method for splicing a running web

Info

Publication number
EP0572384A1
EP0572384A1 EP19910900975 EP91900975A EP0572384A1 EP 0572384 A1 EP0572384 A1 EP 0572384A1 EP 19910900975 EP19910900975 EP 19910900975 EP 91900975 A EP91900975 A EP 91900975A EP 0572384 A1 EP0572384 A1 EP 0572384A1
Authority
EP
European Patent Office
Prior art keywords
splicing
running web
roll
layers
adhesive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19910900975
Other languages
German (de)
French (fr)
Inventor
Jan-Olof Norrman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0572384A1 publication Critical patent/EP0572384A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
    • B65H19/181—Flying splicing, i.e. the expiring web moving during splicing contact taking place on the replacement roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/102—Preparing the leading end of the replacement web before splicing operation; Adhesive arrangements on leading end of replacement web; Tabs and adhesive tapes for splicing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/4176—Preparing leading edge of replacement roll
    • B65H2301/41766—Preparing leading edge of replacement roll by adhesive tab or tape with cleavable or delaminating layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/4606—Preparing leading edge for splicing
    • B65H2301/4607—Preparing leading edge for splicing by adhesive tape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/4606—Preparing leading edge for splicing
    • B65H2301/46075—Preparing leading edge for splicing by adhesive tab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/4606—Preparing leading edge for splicing
    • B65H2301/46078—Preparing leading edge for splicing the adhesive tab or tab having a cleavable or delaminating layer

Definitions

  • the present invention relates to a method for splic ⁇ ing a running web, where a replacement roll is accelerat- ed to a speed corresponding to that of the running web and where a portion of the outermost roll layer of said replacement roll is pasted to the running web, the end tab of the replacement roll being maintained during the- acceleration on the replacement roll by means of an adhe- sive element.
  • the replacement roll In the industrial manufacture of packaging materials, the replacement roll must be manually prepared prior to splicing. This is generally done by cutting the terminal edge portion of the roll into a tab which is fixed to the roll with a number of pieces of single-adhesive tape. These tape pieces are then cut throughout a portion of their width so as to intentionally reduce the tape strength. Such cutting however requires highly experienced personnel. On the one hand, the cuts must be of such a restricted length that the terminal edge of the outermost roll layer of the replacement ro.ll will be retained by means of the tape pieces against the roll when it is acce ⁇ lerated up to a peripheral speed of rotation of about 300-500 m/min.
  • the cuts should be of such an extended length that when the- automatic splicing operation commences, the terminal edge of the outermost roll layer of the replacement roll is torn loose therefrom and is entrained when pasted onto the running web.
  • US-A-2,920,835 and US-A-3,006,568 disclose the use of a double-adhesive tape for splicing two paper rolls and for fixing the terminal edge of the replacement roll on the running roll.
  • the pieces of single-adhesive tape making up the double-adhesive tape are spot-gummed together and can be pulled apart during the splicing ope ⁇ ration.
  • the gum spots must be applied with the utmost care to ensure a correct and reproducible retaining and detaching function. Further, the gum spots entail undesired pollu ⁇ tion problems in the manufacturing process and by adher ⁇ ing to rollers downstream of the splicing site may cause web rupture.
  • An object of the present invention is to provide, e.g. in the packaging industry, a simpler, safer and less costly method for manual or automatic splicing as compar ⁇ ed with conventional techniques.
  • this and other objects have been achieved by a method for splicing a running web of the type described in the introduction to this speci ⁇ fication, which is characterised in that use is made of an adhesive element consisting of two adhesive surface layers facing away from each other and enclosing a cleavable intermediate layer which consists of a fibrous material and is so fixedly attached to said adhesive layers that these layers will be completely covered by the fibrous material upon cleavage.
  • Fig. 1 schematically shows how the outermost roll layer of the replacement roll is attached to the roll.
  • Fig. 2 illustrates a roll of packaging material pre- pared for automatic splicing.
  • Fig. 3 schematically illustrates the automatic splic ⁇ ing of packaging material onto a running web.
  • Fig. 4 shows the roll of Fig. 1 at the moment of splicing.
  • Fig. 1 shows a replacement roll 2 where the end tab 1 of the outermost roll layer is prepared for splicing by being attached to the replacement roll 2 by means of a delaminable adhesive element 3.
  • the adhesive element 3 is a laminate consisting of two self-adhesive surface layers 4 held together by a cleavable intermediate layer 5.
  • the layer 5 may also be enclosed on both sides by homogeneous layers carrying the adhesive surface layers 4.
  • the intermediate layer 5 is fibrous, consisting of paper.
  • the homogeneous layers may be a plastic coating, or consist of e.g. foamed plastic, fabric or other material which is easily cleav ⁇ able when a tractive force is applied at the edge of the adhesive element 3.
  • the intermediate layer 5 has a Z-strength, i.e.
  • the intermediate layer 5 is capable of holding the two adhesive surface layers 4 together when the force directed towards or away from the layers 4 is relatively evenly distributed throughout the entire pasted surface.
  • the Z-strength should be such as to permit a major force which is applied at the edge of the pasted surface to pull the adhesive layers 4 apart, whereby to cleave the intermediate layer 5 between the two adhesive surface layers 4.
  • the adhesive layers 4 should be so fixedly attached to the intermediate layer 5 that when a cleavage force is applied to the intermediate layer 5, cleavage occurs approximately at the centre of the thickness of the inter ⁇ mediate layer 5, such that the two adhesive surface layers 4 will be completely covered by the fibre material of the cleaved intermediate layer 5.
  • the reason for this is that the adhesive surface layers should not be exposed, which might cause problems of undesired adhesion in subsequent manufacturing steps.
  • the paper fibres of the intermediate layer 5 are preferably oriented substantially parallel to the adhesive surface layers 4.
  • Fig. 2 shows a roll of packaging material 2 manually prepared for automatic splicing to a running web 7.
  • the terminal edge portion of the outermost roll layer has been cut into a tab 1 retained on the roll 2 by means of an adhesive element 3 disposed under the end tab 1.
  • the roll is provided on its outside with a conven ⁇ tional double-adhesive tape 6. At the moment of splicing, the tape 6 should adhere to the surface of the running web 7.
  • Fig. 3 shows how the replacement roll 2 described above is accelerated to a speed equal to that of the run ⁇ ning web 7.
  • a transducer emits a signal to initiate splic ⁇ ing when only a small amount of web remains on the old roll 8.
  • the running web 7 is passed up against the rotat- ing replacement roll 2 where it is pasted to the outer face of the replacement roll 2 by means of the conven ⁇ tional double-adhesive tape 6 (not shown in Fig. 3).
  • the old roll 8 is thereafter cut off from the running web 7.
  • the end tab 1 of the replacement roll 2 and hence the adhesive element 3 are then subjected to the tractive force exerted by the running web 7 at the edge of the adhesive element 3, which is then cleaved or delaminated, starting at said edge, closest to the edge of the end tab, Fig. 4, and the material of the replacement roll 2 will be entrained by the web 7 of the old roll without any risk of operational disturbance and production stoppage.
  • the present invention provides a method for splicing a running web which obviates the risks inherent in conventional techniques and which yields a dependable, simple and inex ⁇ pensive splicing method.

Landscapes

  • Replacement Of Web Rolls (AREA)

Abstract

La présente invention décrit une méthode pour raccorder une bande (7) lors de son passage, lorsqu'on accélère la vitesse du rouleau de rechange (2) pour qu'elle égale celle de ladite bande (7). Pendant cette accélération, l'onglet terminal (1) du rouleau de rechange (2) est maintenu contre celui-ci par un élément adhésif décollable (3) placé sous ledit onglet (1). Au moment du raccordement, le rouleau de rechange (2) est ainsi collé à la bande (7) et l'onglet (1) est arraché du rouleau (2) par le décollage de l'élément adhésif (3). Ce dernier se compose de deux couches de surface auto-adhésives (4) et d'une couche intermédiaire fibreuse (3).The present invention describes a method for connecting a strip (7) during its passage, when accelerating the speed of the spare roller (2) so that it equals that of said strip (7). During this acceleration, the terminal tab (1) of the replacement roller (2) is held against the latter by a peelable adhesive element (3) placed under said tab (1). At the time of connection, the replacement roller (2) is thus glued to the strip (7) and the tab (1) is torn off from the roller (2) by the release of the adhesive element (3). The latter consists of two self-adhesive surface layers (4) and a fibrous intermediate layer (3).

Description

METHOD FOR SPLICING A RUNNING WEB
The present invention relates to a method for splic¬ ing a running web, where a replacement roll is accelerat- ed to a speed corresponding to that of the running web and where a portion of the outermost roll layer of said replacement roll is pasted to the running web, the end tab of the replacement roll being maintained during the- acceleration on the replacement roll by means of an adhe- sive element.
In the packaging industry and in papermaking, use is made of both manual and automatic splicing of a replace¬ ment roll to a running web. The splicing operation is car¬ ried out by accelerating the replacement roll to the same speed as the running web. The outermost roll layer of the replacement roll is then pasted to the running web.
In the industrial manufacture of packaging materials, the replacement roll must be manually prepared prior to splicing. This is generally done by cutting the terminal edge portion of the roll into a tab which is fixed to the roll with a number of pieces of single-adhesive tape. These tape pieces are then cut throughout a portion of their width so as to intentionally reduce the tape strength. Such cutting however requires highly experienced personnel. On the one hand, the cuts must be of such a restricted length that the terminal edge of the outermost roll layer of the replacement ro.ll will be retained by means of the tape pieces against the roll when it is acce¬ lerated up to a peripheral speed of rotation of about 300-500 m/min. On the other hand, the cuts should be of such an extended length that when the- automatic splicing operation commences, the terminal edge of the outermost roll layer of the replacement roll is torn loose therefrom and is entrained when pasted onto the running web. US-A-2,920,835 and US-A-3,006,568 disclose the use of a double-adhesive tape for splicing two paper rolls and for fixing the terminal edge of the replacement roll on the running roll. The pieces of single-adhesive tape making up the double-adhesive tape are spot-gummed together and can be pulled apart during the splicing ope¬ ration. Like the cuts in the single-adhesive tape above, the gum spots must be applied with the utmost care to ensure a correct and reproducible retaining and detaching function. Further, the gum spots entail undesired pollu¬ tion problems in the manufacturing process and by adher¬ ing to rollers downstream of the splicing site may cause web rupture.
An object of the present invention is to provide, e.g. in the packaging industry, a simpler, safer and less costly method for manual or automatic splicing as compar¬ ed with conventional techniques. According to the invention, this and other objects have been achieved by a method for splicing a running web of the type described in the introduction to this speci¬ fication, which is characterised in that use is made of an adhesive element consisting of two adhesive surface layers facing away from each other and enclosing a cleavable intermediate layer which consists of a fibrous material and is so fixedly attached to said adhesive layers that these layers will be completely covered by the fibrous material upon cleavage. * The invention will now be described in more detail with reference to the accompanying drawings, in which
Fig. 1 schematically shows how the outermost roll layer of the replacement roll is attached to the roll.
Fig. 2 illustrates a roll of packaging material pre- pared for automatic splicing.
Fig. 3 schematically illustrates the automatic splic¬ ing of packaging material onto a running web.
Fig. 4 shows the roll of Fig. 1 at the moment of splicing. Fig. 1 shows a replacement roll 2 where the end tab 1 of the outermost roll layer is prepared for splicing by being attached to the replacement roll 2 by means of a delaminable adhesive element 3.
The adhesive element 3 is a laminate consisting of two self-adhesive surface layers 4 held together by a cleavable intermediate layer 5. The layer 5 may also be enclosed on both sides by homogeneous layers carrying the adhesive surface layers 4. The intermediate layer 5 is fibrous, consisting of paper. The homogeneous layers may be a plastic coating, or consist of e.g. foamed plastic, fabric or other material which is easily cleav¬ able when a tractive force is applied at the edge of the adhesive element 3. Further, the intermediate layer 5 has a Z-strength, i.e. a resistance to forces perpendi¬ cular to the adhesive layers 4, which is so substantial that the intermediate layer 5 is capable of holding the two adhesive surface layers 4 together when the force directed towards or away from the layers 4 is relatively evenly distributed throughout the entire pasted surface. However, the Z-strength should be such as to permit a major force which is applied at the edge of the pasted surface to pull the adhesive layers 4 apart, whereby to cleave the intermediate layer 5 between the two adhesive surface layers 4.
The adhesive layers 4 should be so fixedly attached to the intermediate layer 5 that when a cleavage force is applied to the intermediate layer 5, cleavage occurs approximately at the centre of the thickness of the inter¬ mediate layer 5, such that the two adhesive surface layers 4 will be completely covered by the fibre material of the cleaved intermediate layer 5. The reason for this is that the adhesive surface layers should not be exposed, which might cause problems of undesired adhesion in subsequent manufacturing steps. To this end, the paper fibres of the intermediate layer 5 are preferably oriented substantially parallel to the adhesive surface layers 4. Fig. 2 shows a roll of packaging material 2 manually prepared for automatic splicing to a running web 7. The terminal edge portion of the outermost roll layer has been cut into a tab 1 retained on the roll 2 by means of an adhesive element 3 disposed under the end tab 1. This ensures safe retention of the pre-cut end tab 1 when the roll 2 is caused, during the splicing operation, to rotate and when the forces which during the rotation tend to fling the end tab 1 away from the roll 2 are prefer- ably evenly distributed across the pasted surface. Fur¬ ther, the roll is provided on its outside with a conven¬ tional double-adhesive tape 6. At the moment of splicing, the tape 6 should adhere to the surface of the running web 7. Fig. 3 shows how the replacement roll 2 described above is accelerated to a speed equal to that of the run¬ ning web 7. A transducer emits a signal to initiate splic¬ ing when only a small amount of web remains on the old roll 8. The running web 7 is passed up against the rotat- ing replacement roll 2 where it is pasted to the outer face of the replacement roll 2 by means of the conven¬ tional double-adhesive tape 6 (not shown in Fig. 3). The old roll 8 is thereafter cut off from the running web 7. The end tab 1 of the replacement roll 2 and hence the adhesive element 3 are then subjected to the tractive force exerted by the running web 7 at the edge of the adhesive element 3, which is then cleaved or delaminated, starting at said edge, closest to the edge of the end tab, Fig. 4, and the material of the replacement roll 2 will be entrained by the web 7 of the old roll without any risk of operational disturbance and production stoppage.
As will have been appreciated from the above, the present invention provides a method for splicing a running web which obviates the risks inherent in conventional techniques and which yields a dependable, simple and inex¬ pensive splicing method.

Claims

1. Method for splicing a running web (7), where a replacement roll (2) is accelerated to a speed corre¬ sponding to that of the running web (7) and where a por¬ tion of the outermost roll layer of said replacement roll (2) is pasted to the running web (7), the end tab (1) of the replacement roll (2) being retained during said acce- leration on the replacement roll (2) by means of an adhe¬ sive element (3), c h a r a c t e r i s e d in that use is made of an adhesive element consisting of two adhesive surface layers (4) facing away from each other and enclos¬ ing a cleavable intermediate layer (5) which consists of a fibrous material and is so fixedly attached to said adhe¬ sive layers (4) that these layers will be completely covered by the fibrous material upon cleavage.
2. Method for splicing a running web (7) as claimed in claim 2, c h a r a c t e r i s e d in that the inter- mediate layer (5) is enclosed on both sides by homogeneous layers carrying said adhesive layers.
3. Method for splicing a running web as claimed in claim 1 or 2, c h a r a c t e r i s e d in that the fibres of the fibrous material are oriented substantially parallel to the adhesive surface layers (4).
4. Method for splicing a running web (7) as claimed in any one of claims 1-3, c h a r a c t e r i s e d in that the adhesive element (3) is disposed under the end tab (1) of the replacement roll (2).
5. Method for splicing a running web as claimed in any one of claims 1-4, c h a r a c t e r i s e d in that the fibrous material is paper.
EP19910900975 1989-12-01 1991-06-28 Method for splicing a running web Withdrawn EP0572384A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8904061 1989-12-01
SE8904061A SE466346B (en) 1989-12-01 1989-12-01 SETTING TO SPRAY A CURRENT MATERIALS LABEL WITH AN ADMINISTRATIVE ELEMENT

Publications (1)

Publication Number Publication Date
EP0572384A1 true EP0572384A1 (en) 1993-12-08

Family

ID=20377661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910900975 Withdrawn EP0572384A1 (en) 1989-12-01 1991-06-28 Method for splicing a running web

Country Status (4)

Country Link
EP (1) EP0572384A1 (en)
AU (1) AU6964391A (en)
SE (1) SE466346B (en)
WO (1) WO1991008159A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339309A1 (en) * 1993-01-19 1994-07-21 Heidelberger Druckmasch Ag Web connection adhesive tape for a new web roll
DE4424902C2 (en) * 1994-07-14 1997-02-13 Koenig & Bauer Albert Ag Adhesive arrangement
GB9420900D0 (en) * 1994-10-17 1994-11-30 Barrett Gary A Dry peel nose tab
DE19632689A1 (en) * 1996-08-14 1998-02-19 Beiersdorf Ag Adhesive tape and method of using it
US6488228B2 (en) 2000-09-22 2002-12-03 3M Innovative Properties Company Tape for flying splice, method of use, and method of manufacture
US6951676B2 (en) 2000-09-25 2005-10-04 3M Innovative Properties Company Butt splicing tapes and butt splicing methods
ATE321719T1 (en) * 2001-08-29 2006-04-15 Tesa Ag MACHINE DETECTED ADHESIVE TAPE
ES2259676T3 (en) * 2001-08-29 2006-10-16 Tesa Ag ADHESIVE BAND DETECTABLE BY THE MACHINE.
US20040256515A1 (en) * 2001-09-03 2004-12-23 Markus Eikmeier Adhesive strip for continuous adhesion on a calender
DE10210192A1 (en) 2002-03-07 2003-10-09 Tesa Ag Adhesive tape for flying roll changes
DE10258667A1 (en) 2002-12-13 2004-07-08 Tesa Ag Adhesive tape for joining the beginning of a new paper roll to the end of an old paper roll that is running out
DE102005051181A1 (en) 2005-10-24 2007-04-26 Tesa Ag Splitting tape, its use and tool for its production
DE102006053439A1 (en) 2006-02-22 2008-05-15 Tesa Ag Adhesive tape and its use
DE102007053432A1 (en) 2007-11-07 2009-05-14 Tesa Ag Pressure-sensitive adhesive tapes for changing reels of flat web materials
DE102019220424A1 (en) 2019-12-20 2021-06-24 Tesa Se Adhesive suitable for the flying roll change of materials with low-energy surfaces

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2212937A (en) * 1935-02-08 1940-08-27 Hoe & Co R Binder tab for web rolls
US2377971A (en) * 1943-12-15 1945-06-12 Wood Newspaper Mach Corp Means for use in splicing webs
US2920835A (en) * 1954-09-13 1960-01-12 Daily Mirror Newspapers Ltd Securing tabs for printing paper rolls
US3006568A (en) * 1960-03-02 1961-10-31 Crabtree & Sons Ltd R Adhesive tab
CA987645A (en) * 1973-03-07 1976-04-20 Masateru Tokuno Method and apparatus for splicing paper rolls

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9108159A1 *

Also Published As

Publication number Publication date
SE8904061D0 (en) 1989-12-01
SE466346B (en) 1992-02-03
WO1991008159A1 (en) 1991-06-13
AU6964391A (en) 1991-06-26
SE8904061L (en) 1991-06-02

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