CA2039631C - Splice and process for making a splice on the leader of a paper roll - Google Patents
Splice and process for making a splice on the leader of a paper roll Download PDFInfo
- Publication number
- CA2039631C CA2039631C CA 2039631 CA2039631A CA2039631C CA 2039631 C CA2039631 C CA 2039631C CA 2039631 CA2039631 CA 2039631 CA 2039631 A CA2039631 A CA 2039631A CA 2039631 C CA2039631 C CA 2039631C
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- Canada
- Prior art keywords
- adhesive
- tape
- paper roll
- strip
- adhesive layer
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- 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.)
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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
- B65H19/102—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
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- 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
Landscapes
- Replacement Of Web Rolls (AREA)
Abstract
For making a web connection, an adhesive tape is used which essentially features on only one side an adhesive layer. The cover foil of this adhesive layer is comprised of two parts that are separated by a longitudinal seam. Applied on the other side of the substrate of the adhesive layer is at least one narrow adhesive strip, also having a cover foil, which preferably is contained on an edge of the adhesive tape. Also provided is a double-stick adhesive tape wherein the longitudinal seam is created by a plurality of perforations. The tapes of the invention can be used as a splice for a paper roll. Processes and devices for making such splice are also disclosed.
Description
r., 2038631 SPLICE AND PROCESS FOR MAKING
A SPLICE ON THE LEADER OF A PAPER ROLL
BACKGROUND OF THE INVENTION
The invention concerns a splice on the leader of a paper roll, and a process for making such a splice.
Adhesive tapes have been utilized which on one side feature the adhesive layer, or adhesive layers, for taping the end of the old web and the leader of the new roll. Part of this adhesive layer is glued underneath the start of the new paper roll.
There is a prior process for making seam splices on running webs, on unwinding devices, for instance for coaters, where a double-sided adhesive tape is applied on the end of the web wound into a paper roll. Once the web end has then been fixed on the paper roll, the second cover foil of the adhesive tape is removed so that when pushing down on the old web passing the paper roll the ends of the webs are being spliced. The disadvantage encountered is that in the following coater, for instance on a blade serving as a doctor element for the coating mixture, the front end of the joined paper web causes a heavy jolt on the blade. Furthermore, a certain, although small, sump of coating mixture also is created at this point, tending to contaminate subsequent rolls, reversing rollers etc.
The problem underlying the invention is to propose a splice and an adhesive tape which makes it possible to make a web splice without the aforementioned disadvantages, where specifically only a slight jolt and ,v ,o . 20 39 631 a low joint edge of the web are supposed to be given at a future slicing of the running web(s).
It is therefore an object of the present invention to obviate or mitigate the above disadvantages.
According to one aspect of the present invention there is provided a splicing tape to overlap adjacent ends of a pair of webs, said tape having oppositely directed surfaces with an adhesive on one of said surfaces for adhering to said adjacent ends, an adhesive strip located on the other of said surfaces to provide a pair of oppositely directed adhesive faces, one of said faces being adhered to said other surface and the other of said faces being directed away from said other surface for engagement with a subsequent portion of one of said webs. Preferably said other face has a significantly greater adhesion than said one face whereby, after engagement with said subsequent portion, said strip will remain adhered to said subsequent portion and separated from said other surface.
2o According to another aspect of the present invention there is provided an adhesive tape for making a web connection to a paper roll, comprising:
a tape member having a front side and a back side, and having respective longitudinal edges, said front side of said tape member including either an adhesive layer or two mutually parallel adhesive layers separated from each other by a narrow space, said adhesive layer or layers ~ 2039631 supporting a cover foil comprising cover foil members, said cover foil members being separated by a longitudinal seam or by said space; and at least one adhesive strip having two sides and having an adhesive layer on each of said sides, said adhesive strip being adhered to said back side of said tape member by the adhesive layer of one said sides of said strip, wherein the adhesion of the side of said adhesive strip adhered to the back side of the tape member is weaker than the adhesion of the other side of said adhesive strip, said adhesive strip extending parallel to said longitudinal edges of said tape member.
According to a further aspect of the present invention there is a leader for a rolled web of material having a splicing tape secured thereto for connection to another web of material, said tape having a pair of opposite surfaces with an adhesive on one of said surfaces, a portion of said one surface being adhered to a terminal zone of said web with another portion thereto carrying a removable cover to inhibit adhesion to said web, another of said surfaces carrying an adhesive strip having one adhesive face adhered to said other surface and another of said adhesive faces adhered to a radially outwardly directed surface of said web spaced along said web from said terminal zone.
A favourable process for making a splice at the leader of a paper roll using adhesive tapes of the present invention is characterized by the following _ ~ ZO 39 631 features: (a) the web leader is kept distant from the paper roll, for instance by forming a loop which is temporarily fixed on the paper roll at the edge of the leader; (b) the adhesive tape is applied either on the loop, after removal of a cover foil, with the adhesive layer corresponding to the cover foil, or the adhesive tape is applied on a spot of the paper roll exposed through the removal of the web leader, with the adhesive layer of the adhesive strips or corresponding adhesive films, as well parallel to the axis of the paper roll;
(c) facultatively upon elimination of the loop or removal of the cover foil closer to the exposure spot of the web leader from the paper roll, the paper roll and web leader are taped together while the web is wound taut; and (d) the overhang tail of the web leader, at the joint of the removed cover foil toward the remaining cover foil of the one web side, is detached, preferably by tearing it off by hand.
A favourable device for making a splice is also described. A device, specifically a paper roll carriage provided with it, is provided for application of an adhesive tape on the web leader of a paper roll or on the paper roll parallel to its center. A guide rail extending parallel to the paper roll is provided, having a guideway for a cassette or unwinding device containing the adhesive tape roll.
4A t, 2 0 3 9 6 3 1 In another embodiment, the invention provides a process for making a splice for a web leader and a paper roll using a double-stick adhesive tape, 15 wherein said adhesive tape comprises a tape member having a linear set of first perforations extending genefally therethrough in a center area thereof whereby said first perforations comprise a first longitudinal seam, said tape member having a front side and a back side and having 20 respective longitudinal edges, each of said sides of said tape member having an adhesive layer thereon, wherein said adhesive layers are covered by respective cover foils, wherein on at least one side of said first perforations on the front side of said tape member the 25 adhesive layer is subdivided into two parts by second perforations parallel to said longitudinal edge, and wherein said second perforations comprise a second longitudinal seam, said second longitudinal seam being perforated to a lesser degree when compared to said first longitudinal seam and wherein the adhesive layer on said back side comprises a plurality of adhesive strips disposed generally parallel to said 2ongitudinal edges, one of said adhesive strips on saic'_ back side being situated generally adjacent a longitudinal edge, and another of said adhesive strips on said back side being situated generally adjacent said first perforations , said process comprising:
maintaining initially a fixed distance between said web leader and said paper roll by forming a loop whereby said loop is temporarily fixed on said paper roll -- ~ 2039631 at an edge of the web leader;
removing the cover foil from the adhesive layer 15 on one side of said first perforations on the front side of the tape member so that an adhesive layer is exposed with an adhesive strip being located on the back of the same side of the adhesive tape along a longitudinal edge thereof whereby said adhesive tape is affixed by adhesion 20 to an exposed portion of said paper roll at the uncovered portion of said adhesive surface;
removing said adhesive tape with its part not glued in place and, by means of said adhesive strips on said back side, affixing by adhesion one on top of 25 another with its two parts back to back;
removing the cover foil contained on the front side of said tape member and which to the separation point of the web leader is kept distant from said paper roll is closer than the other cover foil on said front side;
affixing by adhesion the last winding of said roll on the adhesive surface that has been exposed last;
and separating an overhang tail portion of said web leader on the edge of the last exposed adhesion spot or at the joint toward the remaining cover foil.
x.2039631 Brief Description of the Drawing's The above mentioned and other features and objects of this invention, and the manner of attaining them, will become more apparent and the invention itself will be 5 better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, wherein;
Figure 1 shows an elevation of a splicing tape;
Figure 2 shows a side elevation of a paper roll with the tape of Figure 1 attached at one end;
Figure 3 shows the tape of Figure 1 connecting adjacent webs in the vicinity of a subsequent coating blade of a coater;
Figure 4-7 show alternative embodiments of splicing tape formations, such as in Figure 1, each in a view transverse to the longitudinal expanse of the tapes;
Figure 8 shows a view transverse to the axis of the paper roll, of the area of the web leader;
Figure 9 shows a splicing operation on a rewinding device;
Figure 10 shows a paper roll carriage with a guide for a cassette containing an adhesive tape;
Figure 11 shows a detail concerning the mounting, in plan view;
Figure 12 shows essentially an elevation of the former, partly in section according to the dashed, heavy line in Figure 11;
B' ._ ~ 2039631 Figure 13 shows a holder and sliding device for guiding the end of the paper web and its application on the paper roll;
Figure 14 shows another detail of this device;
Figure 15, another holder device of this type, in plan view;
Figure 16 shows a detail of the glued joint on the end of the paper web relative to Figure 13; and Figures 17 and 18 each show automatic gluing devices in other embodiments, similar to Figure 13.
Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate preferred embodiments of the invention, and such exemplifications are not to be construed as limiting the scope of the invention in any manner.
Description of the Preferred Embodiment In Figures 1 and 4 through 6, the adhesive layer is indicated by dashed line. Corresponding or similar components, for instance cover foils, are signified in the various drawings using the same reference symbols, but with a varying number of prime signs.
Referring therefore to Figure 1 a splicing tape 1 consists of a backing 2 having an adhesive layer 3 on one of the oppositely directed faces 2a, 2b of the backing 2.
Cover foils 4 and 5 separated from each other by a longitudinal seam 9 cover and adhere to the adhesive layer 3. A further, narrow, double-stick adhesive strip E 2039fi31 (also adhesive tape) 7 is located adjacent the edge of layer 2 and has a pair of oppositely directed adhesive coatings 7a,7b. The coating 7a secures the strip 7 to the layer 2 and the coating 7b is covered with another cover foil 8 as shown. The adhesive strip 7 may alternatively be formed by a number of adhesive dots or adhesive areas.
The adhesive force of the adhesive coating 7b of the adhesive strip 7 contained underneath the cover foil 8 is considerably greater than the adhesive force of the adhesive coating 7a on the other side of this adhesive strip 7.
As illustrated in Figure 2, the splicing tape 1 is attached initially to the "end" C of the paper web that forms the "leader" of the paper roll A.
The splicing tape 1, is tacked onto the paper web end C of the paper roll A, on the side of the web facing toward the interior of the paper roll A and also engages the web onthe outward-facing side B of the same lap of the paper web. This may be accomplished by, e.g., manually flapping the end of the paper web C back into the dashed position shown in Figure 2 (loop G), in which this end is temporarily fastened on the paper roll with adhesive pieces (P). With the arrangement according to Figure 2, therefore, the cover foil 5 is initially pealed off on the one side of the adhesive tape 1 and the layer 2a applied to the web C. The foil 8 is then removed and C
._ ,,~ 2 0 3 9 6 31 the loop G released to bring the layer 7b into contact with the outer surface B of the web C.
With the adhesive strip 7 web end C of the paper roll being fastened, as shown in Figure 2, the adhesive strip 7 adheres more so to the paper roll B than to the adhesive tape 1. Thus as the web end C is torn off due to the traction of the old web when splicing the two webs, the strip 7 remains adhered to the surface B rather than to make the joint between adjacent ends of webs, as shown in Figure 3, the cover foil 4 is pulled off the adhesive tape 1. This enables at this point the connection of the web end C with the old web D. The arrows in Figure 3 indicate the running direction of the web. It is also evident from Figure 3 that the narrow adhesive strip 7 still clings to the paper roll at the .
location spaced from the adhesive tape 1. Conveniently, at that point, a reinforcement tape 70 is additionally taped on the paper roll although, however, it may often also be omitted.
The adhesive strip 7 (also 6, 10, in Figure 4; 11, in Figure 5) follows the splice at the distance of a paper roll circumference and thus, as the case may be, can remove paper web remnants that may have remained back on the doctor element and are created as the old paper web is pulled off its core, which is very important for the quality of the applied coating.
The splice between the webs C, D is thus made with a single sided tape overlapping the two ends. This keeps .. 9 ~, 2039631 the thickness of the joint at the doctor element (coating blade S) of Figure 3 low. Hence, also only a very slight amount of coating mixture can accumulate at the joint.
The adhesion provided on the strips 7, each of which may also be a sole adhesive layer, will preferably be made less on the side facing the adhesive tape 2, etc., than on the other side. To that end, the adhesive surfaces on both sides may be varied in size, with adhesive having equal adhesion per unit area on both sides.
In some cases, a splicing tape 1 as described above may not be available, but it is possible to fabricate such a tape for making a splice as proposed and described hereafter in detail using various tape formations. In this case, the adhesive strip 7 may also be an appropriately wide adhesive film.
As stated above, the leader of the new paper roll A
is folded over to a loop G and taped in place on the paper roll using small adhesive tape pieces P. The cover foil 5 of splicing tape 2 is then removed and the backing layer 2 is taped with its adhesive surface 2a down on the leader C, parallel to the axial web edge (leader = front web end). Next, a narrow double-stick adhesive strip 7 with cover foil 8 according to Figure 1 is affixed on the surface 2b of the adhesive tape 2 here, for instance on the unaffixed end (since the cover foil 4 is still contained there) in the area of the longitudinal web edge. All this may be performed manually or also by r, 2039631 to means of an unwinding device for tape which is installed on a rail that is parallel to the paper roll as will be explained more fully below. The expression "narrow adhesive strip" (or adhesive film) means here that it does not have the full width but, e.g., only a width of maximally 80% of the width of the backing layer 2, etc.
In the context of the invention, "narrow" adhesive tapes are recommended for splicing.
The embodiment of Figure 1 shows a single adhesive l0 tape 7. However, other configurations of splicing tape are feasible. According to Figure 4, the adhesive tape 2 may also be provided with several smaller adhesive strips 6,7 at opposite edges and, if preferred, intermediate the edges as indicated at 10. Each of the strips 6,7,10 have respective cover foils 8, 8' and 8" on their nonstick side.
Another tape formation is depicted in Figure 5, where another adhesive tape 11 of the same width as the adhesive tape 2' with cover foil 12 is applied on the two marginal adhesive strips 6' and 7'. The cover foil 12 may additionally feature a separating point E, analogous to the separating point 9 of the cover foils 4, 5, or 4',5'. The sections of the cover foil 12 can then be pulled off successively and the adhesive tape 11, and thus also the adhesive tape 2', and thus also the leader C can be fastened firmly on the paper roll.
Figure 6 illustrates an adhesive tape with a double-sided adhesive coating. It possesses on the one side, as 20 39 fi3~
described so far, the divided cover foils 4" and 5" and on the other side a strip-shaped adhesive layer, such as indicated by the dashed lines, with the individual film strips covered each by a cover foil 71 through 74. When firmly attaching the web leader C to the paper roll, these cover foils can be removed successively and the adhesive tape 2" fastened firmly on the paper roll.
This takes place, at a point where an additional adhesive tape 70 as shown in Figure 8 is applied on the next to the last lap of the paper roll. This is preferably a single-sided adhesive tape 70' used when the paper roll has in axial direction undergone a wavy deformation and formed grooves, due to the effect of moisture. In this case, the adhesive tape 70' adheres strongly to the bumps in the paper roll A, and the narrow adhesive strips 6,7 or 10 or the adhesive strips 11 (Fig.
5) or 2" (Fig. 6) adhere then very well to the outer surface of this additional adhesive 70'.
Taped directly on the wavy paper roll, the additional tape 70' is relatively wide, as is evident from Fig. 8, allowing all of the narrow adhesive strips 6,7 to adhere to it. This additional adhesive tape 70', like the tape 70 shown in Figure 3, has an adhesive layer of a very high adhesive strength so that in the splicing process, in which the leader of the new web, that is the paper roll A, is connected with the old web D at a high speed, this additional adhesive tape including the narrow __ x.2439631 adhesive strips 6,7 will continue to stick to the paper roll, and thus separate from the backing layer 2".
Indicated in Figure 7 is additional a variant of the adhesive tape formation shown in Figure 5, where an adhesive tape twice as wide is used. In the center there is provided a heavy perforation H, so that the tape formation according to Figure 5 can be obtained by folding over in the direction of arrow F. To that end, the small adhesive strips 6' and 7' are suitably provided here also, as indicated in Figure 7. This backing layer 2" is provided on the adhesive surface 2a " ' with cover foils 4',5'; 4 " ',5 " ' that are subdivided in longitudinal direction, as indicated. Thus, also the design of the cover foils corresponds in this case to that according to Figure 5 with the foils 4 " ', 5 " ' providing the layer 12.
It will be noted that relatively large adhesive areas are located under the cover foils 4, 5, 4', 5' or 4", 5" in order to later, in the splice device (for so-called "flying splices"), splice the running webs flawlessly.
Any protruding tail 90 (Figure 2) of the paper leader C that is created when the splicing tape 1 is not affixed exactly aligned on the otherwise absolutely straight axial web edge can be retroactively detached, for instance simply torn off by hand, along the bordering axial edge of the remaining foil 4, 4'.
~1 It is conceivable that the tape configurations according to Figure 1 and 4 through 7 can be manufactured and thus be commercially available. In this case, the process described so far is simplified, as will be described hereafter.
To achieve the arrangement shown in Figure 2, the splicing tape 1 is not affixed to the loop G, but directly to the paper roll A on the surface B by means of the narrow adhesive strip 7 or in case several are available with the adhesive strips 7, 8 or 10 or with appropriate adhesive films applied on the backside of the adhesive tape 2. Cover foils 8, 8' or 8 " that are present, naturally, are removed previously. The loop G
that is formed to access the surface B is sufficiently large so that the.web leader c, upon elimination of the loop, can still be brought into contact with distant adhesive surface under the cover foil 5, according to Figure 2. Any excess will protrude as a "tail" 90 which then is preferably removed by hand along the edge of the adhesive layer or the still present cover foil 4. This makes for a very simple process of making the splice, without requiring expensive mechanisms.
Naturally, it is possible to provide a simple device with a linear guide for affixing the adhesive tapes to the paper roll. Also, making a loop G may be omitted, permitting the loose web end simply to hang down vertically according to Figure 2.
However, Figure 2 indicates by broken line that the tape 1 may also be attached to the loop G from outside.
Figure 9 shows basically how the process just described can also be applied very well in a rewinding device for a paper roll, by stopping the new paper roll (i.e., naturally, at the same time also the old one) in the rewinding process. The splicing tape 1 or one of the other configurations according to Figures 4-7 is then glued in the last described way, so to speak with the "backside" on the paper roll, as indicated by arrow 1.
The front side is then that which preferably contains the continuous adhesive layer with the cover foils 4 and 5 or 4' and 5' or 4" and 5" . The one cover foil . in t-ha examples always 5 or 5' or 5 " , is first separated.
Next, the paper roll is rotated in the direction of rotation as indicated by the arcuate arrow until the web 1 has passed the squeeze point in the press gap between the press roll 71 and the paper roll. During this passage, the future web leader C is attached to the paper roll A by means of the adhesive tape 1. The new paper roll can then be separated from the old paper roll 73 with the cutter, as indicated at 72, previously or only subsequently. The overhang "tail" of the new paper roll A is then, as described above, separated along the joint of the cover foils 4 and 5, preferably by hand. As said before, the cover foil 4 remains generally still on the adhesive tape, since that foil is separated only when making the final splice in processing the paper roll.
203963'~~
This process, as the case may be, may also be modified in that the adhesive tape is applied with the front side, i.e., after removal of the one cover foil part 4 or 5, 4' or 5', 4 " or 5 " , on the web end in the 5 area of the contact roll 71, in that then, as the case may be, the cover foils 8, 8', 8 " of the smaller adhesive strips 6 or 7 or 10 are pealed off and the tape, and thus the web end, i.e., actually the new web leader C, is taped to the new paper roll A by means of these 10 adhesive strips, which may be accomplished in that the new paper roll A is rotated somewhat in the direction of winding, so that the adhesive tape will pass the squeeze point between the contact roll 71 and the new paper roll A.
15 To facilitate attachment of the splicing tape 1, conventional equipment may be modified as described below.
Figure 10 is a basic sketch of a paper roll carriage 80 where on a frame 81 a support plate 82 is provided for the shaft 83 of the core 84 of the paper roll A. Mounted on the frame 81, on both sides of the paper roll A, is a console 85 which is perpendicular to the paper roll axis or peripheral surface of the paper roll A and essentially horizontal. The console is shown supported by a holder strip 87 featuring a guide in which the console 85 can be moved vertically. The console 85 supports a guide rail 86, which is, movable in horizontal direction in guides 88. A cassette or other unwinding device for adhesive C
._ 2039fi31 tapes or adhesive strips can be mounted for movement along the axis of the paper roll A, on the guide rail 86.
For the guide rail 86', as indicated by broken line, there may also be provided an essentially radial console 85' arranged relative to the paper roll axis, on both sides of the paper roll on the paper roll carriage. Not illustrated here is that the cassette or the unwinding device for adhesive tapes may be mounted on the guide rail 86 by means of a springed holder, i.e., that the cassette, for instance, might be connected by way of a spring arrangement with a slider block running in the guideway 89 of the guide rail 86.
As illustrated in Figure 11 and Figure 12, the cassette K can be retained in the guide rail 86 by means of a slider 91 and a holder rail 92 and run along the guide rail 86. The holder rail 92 is fastened on the slider through springs 93 and bolts 94. The bolts 94 are threaded bolts, thus making it possible to exchange the holder rail 92 including the cassette for a specific cassette width. Serving that purpose is a holder plate 95 which can be fastened on the holder rail 92 by means of wing nuts 97. Also illustrated is that during the unwinding of the adhesive tape the cover foil 5 can be separated from the adhesive tape roll R by means of a narrow, thin strip 96.
Figure 13 illustrates a device for facilitating the attachment of the adhesive tape 1 to the end C of the web. There is a pivoting frame 22 provided which on its c ~~ 203963' upper end supports a guide and retaining roll 13 that is mounted in bearings 33. This retaining roll is a hollow cylinder with shell bores which connect to a vacuum, relative to the atmosphere, which is to be generated inside the retaining roll 13. The web C is held thereby on the retaining roll. Below the retaining roll 13, a worktable 14 is mounted on a lever 15 that pivots about a pivot 20 and supports a tabletop 16. The pivotal lever can be swivelled by a hydraulic jack element 29, through l0 the intermediary of its ram 30, in the position illustrated by broken lines, in which the tabletop 16 bears on the shell surface of the retaining roll 13. The hydraulic jack element 29 is mounted on a bearing device 32 in the swivel frame 22. The latter, in turn, is swivelable by means of a hydraulic jack element 21 which, for one, is mounted on a base 19 by means of bearing element 24 and, for another, by means of a bearing element 23 on the swivel frame. The latter, in turn, pivots about the bearing point 27 on the base 19.
Figure 14, enlarged, illustrates the worktable 14 with the tabletop 16. The latter features a number of holder elements (holder pins) 25 with the aid of which it is possible to align the adhesive strip pieces on the tabletop 16. Additionally, the tabletop features bores 26. The worktable 14 being fashioned as 60 a hollow box which by means of connection 41 can be subjected to a vacuum relative to the atmosphere, this vacuum becomes effective through the bores 26, retaining the adhesive C
~.2~39631 strip pieces on the tabletop 16, so that, as the latter pivots toward the retaining roll 13, these pieces do not drop of f .
The adhesive tape, i.e., the pieces of adhesive tape, that are placed on the worktable accord to the form of Figure 1 and thus are applied on the end of the web C
as the worktable 14 swivels up. As the guide and retaining roll 13 and the paper roll A, respectively, rotate, the end of the paper web C is guided in the attachment position relative to the paper roll A. In the process, the cover foil 8 of the narrow adhesive strip 7 is previously removed.
It will be noted in Figure 14 that the tabletop features a tearing edge 18 that corresponds to the splice edge of the web end C. In the dash-dotted position of the worktable 14 according to Figure 14, this edge can be produced by tearing the excess paper of the web end off.
The pins 25 and bores 26 maintain the adhesive strips aligned with the serrated edge.
Naturally, also other accessory devices are may be utilized which enable the separation of the web in the illustrated form.
Figure 16 shows the position of the adhesive tape 1 where it has been taped by the worktable 14 to the web end of Figure 4. Figure 15 depicts a device of the guide roll 13 which does not feature the worktable 14 according to Figure 13. Instead, a fixed worktable 17 is provided that is fastened on the swivel frame 22'. The adhesive r7 19 x.2039631 tape 1 or pieces thereof are applied here directly on the end of the web C by hand.
In Figure 17, the worktable 15 is fashioned as a box with an approximately quadratic cross section. The tabletop on which the adhesive strips are placed is marked 16'. The interior of the box is hollow and preferably kept at a vacuum relative to the atmosphere, or at least partly, at any rate in the area where the table top 16' is located. To that end, a connection 41 similar to the design of the embodiment relative to Figure 14 is to be provided (here marked 41'). Bores 26 as in the embodiment according to Figure 14 are provided as well in the work surface. For an indented splice according to Figure 14, the fixing pins 25 need to be provided as well, which, naturally, must be retractable in design, for instance through spring-loading.
The paper web hangs with its end, according to the broken line, over the retaining roll 13. To begin with, the worktable 50 is swivelled in a position in which the cutting edge 54 clips the paper web along an intended splicing edge. For that purpose, the shell surface of the retaining roll 13 is preferably rubber-coated. The adhesive strips which have been placed on the worktable 16' are retained by the vacuum and, upon retraction of the worktable 50 by means of swivel arm 15', rotated in a position in which the work surface 16', as illustrated in the figure, is exactly opposite the retaining roll 13.
The adhesive strip can then be attached, through a f 20 39 63?
controlled swivel movement of the worktable 50, also in zig-zag shape to the end of the paper web. This swivel movement can be accomplished either through a stepping motor or by means of hydraulic elements in keeping with 5 the elements 21 and 29 according to Figure 13, with the aid of limit switches. The swivel frame corresponds essential to that of figure 13 and is marked 22 " here.
In Figure 18, the worktable is fashioned as roll 52 formed by a hollow cylinder. It also features a cutting 10 edge 54. The work surface should be conceived in a position comparable to the worktable in Figure 13. Here, too, the roll 52 forming the worktable must feature a swivel or rotary drive for a specific swivel or rotary motion.
15 The bending resistance moment of the retaining roll 13 is preferably considerably greater than that of the worktable 16, 50 or 52.
While this invention has been described as having a preferred design, the present invention can be further 20 modified within the spirit and scope of this disclosure.
This application is therefore intended to cover any variations, uses, or adaptions of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.
A SPLICE ON THE LEADER OF A PAPER ROLL
BACKGROUND OF THE INVENTION
The invention concerns a splice on the leader of a paper roll, and a process for making such a splice.
Adhesive tapes have been utilized which on one side feature the adhesive layer, or adhesive layers, for taping the end of the old web and the leader of the new roll. Part of this adhesive layer is glued underneath the start of the new paper roll.
There is a prior process for making seam splices on running webs, on unwinding devices, for instance for coaters, where a double-sided adhesive tape is applied on the end of the web wound into a paper roll. Once the web end has then been fixed on the paper roll, the second cover foil of the adhesive tape is removed so that when pushing down on the old web passing the paper roll the ends of the webs are being spliced. The disadvantage encountered is that in the following coater, for instance on a blade serving as a doctor element for the coating mixture, the front end of the joined paper web causes a heavy jolt on the blade. Furthermore, a certain, although small, sump of coating mixture also is created at this point, tending to contaminate subsequent rolls, reversing rollers etc.
The problem underlying the invention is to propose a splice and an adhesive tape which makes it possible to make a web splice without the aforementioned disadvantages, where specifically only a slight jolt and ,v ,o . 20 39 631 a low joint edge of the web are supposed to be given at a future slicing of the running web(s).
It is therefore an object of the present invention to obviate or mitigate the above disadvantages.
According to one aspect of the present invention there is provided a splicing tape to overlap adjacent ends of a pair of webs, said tape having oppositely directed surfaces with an adhesive on one of said surfaces for adhering to said adjacent ends, an adhesive strip located on the other of said surfaces to provide a pair of oppositely directed adhesive faces, one of said faces being adhered to said other surface and the other of said faces being directed away from said other surface for engagement with a subsequent portion of one of said webs. Preferably said other face has a significantly greater adhesion than said one face whereby, after engagement with said subsequent portion, said strip will remain adhered to said subsequent portion and separated from said other surface.
2o According to another aspect of the present invention there is provided an adhesive tape for making a web connection to a paper roll, comprising:
a tape member having a front side and a back side, and having respective longitudinal edges, said front side of said tape member including either an adhesive layer or two mutually parallel adhesive layers separated from each other by a narrow space, said adhesive layer or layers ~ 2039631 supporting a cover foil comprising cover foil members, said cover foil members being separated by a longitudinal seam or by said space; and at least one adhesive strip having two sides and having an adhesive layer on each of said sides, said adhesive strip being adhered to said back side of said tape member by the adhesive layer of one said sides of said strip, wherein the adhesion of the side of said adhesive strip adhered to the back side of the tape member is weaker than the adhesion of the other side of said adhesive strip, said adhesive strip extending parallel to said longitudinal edges of said tape member.
According to a further aspect of the present invention there is a leader for a rolled web of material having a splicing tape secured thereto for connection to another web of material, said tape having a pair of opposite surfaces with an adhesive on one of said surfaces, a portion of said one surface being adhered to a terminal zone of said web with another portion thereto carrying a removable cover to inhibit adhesion to said web, another of said surfaces carrying an adhesive strip having one adhesive face adhered to said other surface and another of said adhesive faces adhered to a radially outwardly directed surface of said web spaced along said web from said terminal zone.
A favourable process for making a splice at the leader of a paper roll using adhesive tapes of the present invention is characterized by the following _ ~ ZO 39 631 features: (a) the web leader is kept distant from the paper roll, for instance by forming a loop which is temporarily fixed on the paper roll at the edge of the leader; (b) the adhesive tape is applied either on the loop, after removal of a cover foil, with the adhesive layer corresponding to the cover foil, or the adhesive tape is applied on a spot of the paper roll exposed through the removal of the web leader, with the adhesive layer of the adhesive strips or corresponding adhesive films, as well parallel to the axis of the paper roll;
(c) facultatively upon elimination of the loop or removal of the cover foil closer to the exposure spot of the web leader from the paper roll, the paper roll and web leader are taped together while the web is wound taut; and (d) the overhang tail of the web leader, at the joint of the removed cover foil toward the remaining cover foil of the one web side, is detached, preferably by tearing it off by hand.
A favourable device for making a splice is also described. A device, specifically a paper roll carriage provided with it, is provided for application of an adhesive tape on the web leader of a paper roll or on the paper roll parallel to its center. A guide rail extending parallel to the paper roll is provided, having a guideway for a cassette or unwinding device containing the adhesive tape roll.
4A t, 2 0 3 9 6 3 1 In another embodiment, the invention provides a process for making a splice for a web leader and a paper roll using a double-stick adhesive tape, 15 wherein said adhesive tape comprises a tape member having a linear set of first perforations extending genefally therethrough in a center area thereof whereby said first perforations comprise a first longitudinal seam, said tape member having a front side and a back side and having 20 respective longitudinal edges, each of said sides of said tape member having an adhesive layer thereon, wherein said adhesive layers are covered by respective cover foils, wherein on at least one side of said first perforations on the front side of said tape member the 25 adhesive layer is subdivided into two parts by second perforations parallel to said longitudinal edge, and wherein said second perforations comprise a second longitudinal seam, said second longitudinal seam being perforated to a lesser degree when compared to said first longitudinal seam and wherein the adhesive layer on said back side comprises a plurality of adhesive strips disposed generally parallel to said 2ongitudinal edges, one of said adhesive strips on saic'_ back side being situated generally adjacent a longitudinal edge, and another of said adhesive strips on said back side being situated generally adjacent said first perforations , said process comprising:
maintaining initially a fixed distance between said web leader and said paper roll by forming a loop whereby said loop is temporarily fixed on said paper roll -- ~ 2039631 at an edge of the web leader;
removing the cover foil from the adhesive layer 15 on one side of said first perforations on the front side of the tape member so that an adhesive layer is exposed with an adhesive strip being located on the back of the same side of the adhesive tape along a longitudinal edge thereof whereby said adhesive tape is affixed by adhesion 20 to an exposed portion of said paper roll at the uncovered portion of said adhesive surface;
removing said adhesive tape with its part not glued in place and, by means of said adhesive strips on said back side, affixing by adhesion one on top of 25 another with its two parts back to back;
removing the cover foil contained on the front side of said tape member and which to the separation point of the web leader is kept distant from said paper roll is closer than the other cover foil on said front side;
affixing by adhesion the last winding of said roll on the adhesive surface that has been exposed last;
and separating an overhang tail portion of said web leader on the edge of the last exposed adhesion spot or at the joint toward the remaining cover foil.
x.2039631 Brief Description of the Drawing's The above mentioned and other features and objects of this invention, and the manner of attaining them, will become more apparent and the invention itself will be 5 better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, wherein;
Figure 1 shows an elevation of a splicing tape;
Figure 2 shows a side elevation of a paper roll with the tape of Figure 1 attached at one end;
Figure 3 shows the tape of Figure 1 connecting adjacent webs in the vicinity of a subsequent coating blade of a coater;
Figure 4-7 show alternative embodiments of splicing tape formations, such as in Figure 1, each in a view transverse to the longitudinal expanse of the tapes;
Figure 8 shows a view transverse to the axis of the paper roll, of the area of the web leader;
Figure 9 shows a splicing operation on a rewinding device;
Figure 10 shows a paper roll carriage with a guide for a cassette containing an adhesive tape;
Figure 11 shows a detail concerning the mounting, in plan view;
Figure 12 shows essentially an elevation of the former, partly in section according to the dashed, heavy line in Figure 11;
B' ._ ~ 2039631 Figure 13 shows a holder and sliding device for guiding the end of the paper web and its application on the paper roll;
Figure 14 shows another detail of this device;
Figure 15, another holder device of this type, in plan view;
Figure 16 shows a detail of the glued joint on the end of the paper web relative to Figure 13; and Figures 17 and 18 each show automatic gluing devices in other embodiments, similar to Figure 13.
Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate preferred embodiments of the invention, and such exemplifications are not to be construed as limiting the scope of the invention in any manner.
Description of the Preferred Embodiment In Figures 1 and 4 through 6, the adhesive layer is indicated by dashed line. Corresponding or similar components, for instance cover foils, are signified in the various drawings using the same reference symbols, but with a varying number of prime signs.
Referring therefore to Figure 1 a splicing tape 1 consists of a backing 2 having an adhesive layer 3 on one of the oppositely directed faces 2a, 2b of the backing 2.
Cover foils 4 and 5 separated from each other by a longitudinal seam 9 cover and adhere to the adhesive layer 3. A further, narrow, double-stick adhesive strip E 2039fi31 (also adhesive tape) 7 is located adjacent the edge of layer 2 and has a pair of oppositely directed adhesive coatings 7a,7b. The coating 7a secures the strip 7 to the layer 2 and the coating 7b is covered with another cover foil 8 as shown. The adhesive strip 7 may alternatively be formed by a number of adhesive dots or adhesive areas.
The adhesive force of the adhesive coating 7b of the adhesive strip 7 contained underneath the cover foil 8 is considerably greater than the adhesive force of the adhesive coating 7a on the other side of this adhesive strip 7.
As illustrated in Figure 2, the splicing tape 1 is attached initially to the "end" C of the paper web that forms the "leader" of the paper roll A.
The splicing tape 1, is tacked onto the paper web end C of the paper roll A, on the side of the web facing toward the interior of the paper roll A and also engages the web onthe outward-facing side B of the same lap of the paper web. This may be accomplished by, e.g., manually flapping the end of the paper web C back into the dashed position shown in Figure 2 (loop G), in which this end is temporarily fastened on the paper roll with adhesive pieces (P). With the arrangement according to Figure 2, therefore, the cover foil 5 is initially pealed off on the one side of the adhesive tape 1 and the layer 2a applied to the web C. The foil 8 is then removed and C
._ ,,~ 2 0 3 9 6 31 the loop G released to bring the layer 7b into contact with the outer surface B of the web C.
With the adhesive strip 7 web end C of the paper roll being fastened, as shown in Figure 2, the adhesive strip 7 adheres more so to the paper roll B than to the adhesive tape 1. Thus as the web end C is torn off due to the traction of the old web when splicing the two webs, the strip 7 remains adhered to the surface B rather than to make the joint between adjacent ends of webs, as shown in Figure 3, the cover foil 4 is pulled off the adhesive tape 1. This enables at this point the connection of the web end C with the old web D. The arrows in Figure 3 indicate the running direction of the web. It is also evident from Figure 3 that the narrow adhesive strip 7 still clings to the paper roll at the .
location spaced from the adhesive tape 1. Conveniently, at that point, a reinforcement tape 70 is additionally taped on the paper roll although, however, it may often also be omitted.
The adhesive strip 7 (also 6, 10, in Figure 4; 11, in Figure 5) follows the splice at the distance of a paper roll circumference and thus, as the case may be, can remove paper web remnants that may have remained back on the doctor element and are created as the old paper web is pulled off its core, which is very important for the quality of the applied coating.
The splice between the webs C, D is thus made with a single sided tape overlapping the two ends. This keeps .. 9 ~, 2039631 the thickness of the joint at the doctor element (coating blade S) of Figure 3 low. Hence, also only a very slight amount of coating mixture can accumulate at the joint.
The adhesion provided on the strips 7, each of which may also be a sole adhesive layer, will preferably be made less on the side facing the adhesive tape 2, etc., than on the other side. To that end, the adhesive surfaces on both sides may be varied in size, with adhesive having equal adhesion per unit area on both sides.
In some cases, a splicing tape 1 as described above may not be available, but it is possible to fabricate such a tape for making a splice as proposed and described hereafter in detail using various tape formations. In this case, the adhesive strip 7 may also be an appropriately wide adhesive film.
As stated above, the leader of the new paper roll A
is folded over to a loop G and taped in place on the paper roll using small adhesive tape pieces P. The cover foil 5 of splicing tape 2 is then removed and the backing layer 2 is taped with its adhesive surface 2a down on the leader C, parallel to the axial web edge (leader = front web end). Next, a narrow double-stick adhesive strip 7 with cover foil 8 according to Figure 1 is affixed on the surface 2b of the adhesive tape 2 here, for instance on the unaffixed end (since the cover foil 4 is still contained there) in the area of the longitudinal web edge. All this may be performed manually or also by r, 2039631 to means of an unwinding device for tape which is installed on a rail that is parallel to the paper roll as will be explained more fully below. The expression "narrow adhesive strip" (or adhesive film) means here that it does not have the full width but, e.g., only a width of maximally 80% of the width of the backing layer 2, etc.
In the context of the invention, "narrow" adhesive tapes are recommended for splicing.
The embodiment of Figure 1 shows a single adhesive l0 tape 7. However, other configurations of splicing tape are feasible. According to Figure 4, the adhesive tape 2 may also be provided with several smaller adhesive strips 6,7 at opposite edges and, if preferred, intermediate the edges as indicated at 10. Each of the strips 6,7,10 have respective cover foils 8, 8' and 8" on their nonstick side.
Another tape formation is depicted in Figure 5, where another adhesive tape 11 of the same width as the adhesive tape 2' with cover foil 12 is applied on the two marginal adhesive strips 6' and 7'. The cover foil 12 may additionally feature a separating point E, analogous to the separating point 9 of the cover foils 4, 5, or 4',5'. The sections of the cover foil 12 can then be pulled off successively and the adhesive tape 11, and thus also the adhesive tape 2', and thus also the leader C can be fastened firmly on the paper roll.
Figure 6 illustrates an adhesive tape with a double-sided adhesive coating. It possesses on the one side, as 20 39 fi3~
described so far, the divided cover foils 4" and 5" and on the other side a strip-shaped adhesive layer, such as indicated by the dashed lines, with the individual film strips covered each by a cover foil 71 through 74. When firmly attaching the web leader C to the paper roll, these cover foils can be removed successively and the adhesive tape 2" fastened firmly on the paper roll.
This takes place, at a point where an additional adhesive tape 70 as shown in Figure 8 is applied on the next to the last lap of the paper roll. This is preferably a single-sided adhesive tape 70' used when the paper roll has in axial direction undergone a wavy deformation and formed grooves, due to the effect of moisture. In this case, the adhesive tape 70' adheres strongly to the bumps in the paper roll A, and the narrow adhesive strips 6,7 or 10 or the adhesive strips 11 (Fig.
5) or 2" (Fig. 6) adhere then very well to the outer surface of this additional adhesive 70'.
Taped directly on the wavy paper roll, the additional tape 70' is relatively wide, as is evident from Fig. 8, allowing all of the narrow adhesive strips 6,7 to adhere to it. This additional adhesive tape 70', like the tape 70 shown in Figure 3, has an adhesive layer of a very high adhesive strength so that in the splicing process, in which the leader of the new web, that is the paper roll A, is connected with the old web D at a high speed, this additional adhesive tape including the narrow __ x.2439631 adhesive strips 6,7 will continue to stick to the paper roll, and thus separate from the backing layer 2".
Indicated in Figure 7 is additional a variant of the adhesive tape formation shown in Figure 5, where an adhesive tape twice as wide is used. In the center there is provided a heavy perforation H, so that the tape formation according to Figure 5 can be obtained by folding over in the direction of arrow F. To that end, the small adhesive strips 6' and 7' are suitably provided here also, as indicated in Figure 7. This backing layer 2" is provided on the adhesive surface 2a " ' with cover foils 4',5'; 4 " ',5 " ' that are subdivided in longitudinal direction, as indicated. Thus, also the design of the cover foils corresponds in this case to that according to Figure 5 with the foils 4 " ', 5 " ' providing the layer 12.
It will be noted that relatively large adhesive areas are located under the cover foils 4, 5, 4', 5' or 4", 5" in order to later, in the splice device (for so-called "flying splices"), splice the running webs flawlessly.
Any protruding tail 90 (Figure 2) of the paper leader C that is created when the splicing tape 1 is not affixed exactly aligned on the otherwise absolutely straight axial web edge can be retroactively detached, for instance simply torn off by hand, along the bordering axial edge of the remaining foil 4, 4'.
~1 It is conceivable that the tape configurations according to Figure 1 and 4 through 7 can be manufactured and thus be commercially available. In this case, the process described so far is simplified, as will be described hereafter.
To achieve the arrangement shown in Figure 2, the splicing tape 1 is not affixed to the loop G, but directly to the paper roll A on the surface B by means of the narrow adhesive strip 7 or in case several are available with the adhesive strips 7, 8 or 10 or with appropriate adhesive films applied on the backside of the adhesive tape 2. Cover foils 8, 8' or 8 " that are present, naturally, are removed previously. The loop G
that is formed to access the surface B is sufficiently large so that the.web leader c, upon elimination of the loop, can still be brought into contact with distant adhesive surface under the cover foil 5, according to Figure 2. Any excess will protrude as a "tail" 90 which then is preferably removed by hand along the edge of the adhesive layer or the still present cover foil 4. This makes for a very simple process of making the splice, without requiring expensive mechanisms.
Naturally, it is possible to provide a simple device with a linear guide for affixing the adhesive tapes to the paper roll. Also, making a loop G may be omitted, permitting the loose web end simply to hang down vertically according to Figure 2.
However, Figure 2 indicates by broken line that the tape 1 may also be attached to the loop G from outside.
Figure 9 shows basically how the process just described can also be applied very well in a rewinding device for a paper roll, by stopping the new paper roll (i.e., naturally, at the same time also the old one) in the rewinding process. The splicing tape 1 or one of the other configurations according to Figures 4-7 is then glued in the last described way, so to speak with the "backside" on the paper roll, as indicated by arrow 1.
The front side is then that which preferably contains the continuous adhesive layer with the cover foils 4 and 5 or 4' and 5' or 4" and 5" . The one cover foil . in t-ha examples always 5 or 5' or 5 " , is first separated.
Next, the paper roll is rotated in the direction of rotation as indicated by the arcuate arrow until the web 1 has passed the squeeze point in the press gap between the press roll 71 and the paper roll. During this passage, the future web leader C is attached to the paper roll A by means of the adhesive tape 1. The new paper roll can then be separated from the old paper roll 73 with the cutter, as indicated at 72, previously or only subsequently. The overhang "tail" of the new paper roll A is then, as described above, separated along the joint of the cover foils 4 and 5, preferably by hand. As said before, the cover foil 4 remains generally still on the adhesive tape, since that foil is separated only when making the final splice in processing the paper roll.
203963'~~
This process, as the case may be, may also be modified in that the adhesive tape is applied with the front side, i.e., after removal of the one cover foil part 4 or 5, 4' or 5', 4 " or 5 " , on the web end in the 5 area of the contact roll 71, in that then, as the case may be, the cover foils 8, 8', 8 " of the smaller adhesive strips 6 or 7 or 10 are pealed off and the tape, and thus the web end, i.e., actually the new web leader C, is taped to the new paper roll A by means of these 10 adhesive strips, which may be accomplished in that the new paper roll A is rotated somewhat in the direction of winding, so that the adhesive tape will pass the squeeze point between the contact roll 71 and the new paper roll A.
15 To facilitate attachment of the splicing tape 1, conventional equipment may be modified as described below.
Figure 10 is a basic sketch of a paper roll carriage 80 where on a frame 81 a support plate 82 is provided for the shaft 83 of the core 84 of the paper roll A. Mounted on the frame 81, on both sides of the paper roll A, is a console 85 which is perpendicular to the paper roll axis or peripheral surface of the paper roll A and essentially horizontal. The console is shown supported by a holder strip 87 featuring a guide in which the console 85 can be moved vertically. The console 85 supports a guide rail 86, which is, movable in horizontal direction in guides 88. A cassette or other unwinding device for adhesive C
._ 2039fi31 tapes or adhesive strips can be mounted for movement along the axis of the paper roll A, on the guide rail 86.
For the guide rail 86', as indicated by broken line, there may also be provided an essentially radial console 85' arranged relative to the paper roll axis, on both sides of the paper roll on the paper roll carriage. Not illustrated here is that the cassette or the unwinding device for adhesive tapes may be mounted on the guide rail 86 by means of a springed holder, i.e., that the cassette, for instance, might be connected by way of a spring arrangement with a slider block running in the guideway 89 of the guide rail 86.
As illustrated in Figure 11 and Figure 12, the cassette K can be retained in the guide rail 86 by means of a slider 91 and a holder rail 92 and run along the guide rail 86. The holder rail 92 is fastened on the slider through springs 93 and bolts 94. The bolts 94 are threaded bolts, thus making it possible to exchange the holder rail 92 including the cassette for a specific cassette width. Serving that purpose is a holder plate 95 which can be fastened on the holder rail 92 by means of wing nuts 97. Also illustrated is that during the unwinding of the adhesive tape the cover foil 5 can be separated from the adhesive tape roll R by means of a narrow, thin strip 96.
Figure 13 illustrates a device for facilitating the attachment of the adhesive tape 1 to the end C of the web. There is a pivoting frame 22 provided which on its c ~~ 203963' upper end supports a guide and retaining roll 13 that is mounted in bearings 33. This retaining roll is a hollow cylinder with shell bores which connect to a vacuum, relative to the atmosphere, which is to be generated inside the retaining roll 13. The web C is held thereby on the retaining roll. Below the retaining roll 13, a worktable 14 is mounted on a lever 15 that pivots about a pivot 20 and supports a tabletop 16. The pivotal lever can be swivelled by a hydraulic jack element 29, through l0 the intermediary of its ram 30, in the position illustrated by broken lines, in which the tabletop 16 bears on the shell surface of the retaining roll 13. The hydraulic jack element 29 is mounted on a bearing device 32 in the swivel frame 22. The latter, in turn, is swivelable by means of a hydraulic jack element 21 which, for one, is mounted on a base 19 by means of bearing element 24 and, for another, by means of a bearing element 23 on the swivel frame. The latter, in turn, pivots about the bearing point 27 on the base 19.
Figure 14, enlarged, illustrates the worktable 14 with the tabletop 16. The latter features a number of holder elements (holder pins) 25 with the aid of which it is possible to align the adhesive strip pieces on the tabletop 16. Additionally, the tabletop features bores 26. The worktable 14 being fashioned as 60 a hollow box which by means of connection 41 can be subjected to a vacuum relative to the atmosphere, this vacuum becomes effective through the bores 26, retaining the adhesive C
~.2~39631 strip pieces on the tabletop 16, so that, as the latter pivots toward the retaining roll 13, these pieces do not drop of f .
The adhesive tape, i.e., the pieces of adhesive tape, that are placed on the worktable accord to the form of Figure 1 and thus are applied on the end of the web C
as the worktable 14 swivels up. As the guide and retaining roll 13 and the paper roll A, respectively, rotate, the end of the paper web C is guided in the attachment position relative to the paper roll A. In the process, the cover foil 8 of the narrow adhesive strip 7 is previously removed.
It will be noted in Figure 14 that the tabletop features a tearing edge 18 that corresponds to the splice edge of the web end C. In the dash-dotted position of the worktable 14 according to Figure 14, this edge can be produced by tearing the excess paper of the web end off.
The pins 25 and bores 26 maintain the adhesive strips aligned with the serrated edge.
Naturally, also other accessory devices are may be utilized which enable the separation of the web in the illustrated form.
Figure 16 shows the position of the adhesive tape 1 where it has been taped by the worktable 14 to the web end of Figure 4. Figure 15 depicts a device of the guide roll 13 which does not feature the worktable 14 according to Figure 13. Instead, a fixed worktable 17 is provided that is fastened on the swivel frame 22'. The adhesive r7 19 x.2039631 tape 1 or pieces thereof are applied here directly on the end of the web C by hand.
In Figure 17, the worktable 15 is fashioned as a box with an approximately quadratic cross section. The tabletop on which the adhesive strips are placed is marked 16'. The interior of the box is hollow and preferably kept at a vacuum relative to the atmosphere, or at least partly, at any rate in the area where the table top 16' is located. To that end, a connection 41 similar to the design of the embodiment relative to Figure 14 is to be provided (here marked 41'). Bores 26 as in the embodiment according to Figure 14 are provided as well in the work surface. For an indented splice according to Figure 14, the fixing pins 25 need to be provided as well, which, naturally, must be retractable in design, for instance through spring-loading.
The paper web hangs with its end, according to the broken line, over the retaining roll 13. To begin with, the worktable 50 is swivelled in a position in which the cutting edge 54 clips the paper web along an intended splicing edge. For that purpose, the shell surface of the retaining roll 13 is preferably rubber-coated. The adhesive strips which have been placed on the worktable 16' are retained by the vacuum and, upon retraction of the worktable 50 by means of swivel arm 15', rotated in a position in which the work surface 16', as illustrated in the figure, is exactly opposite the retaining roll 13.
The adhesive strip can then be attached, through a f 20 39 63?
controlled swivel movement of the worktable 50, also in zig-zag shape to the end of the paper web. This swivel movement can be accomplished either through a stepping motor or by means of hydraulic elements in keeping with 5 the elements 21 and 29 according to Figure 13, with the aid of limit switches. The swivel frame corresponds essential to that of figure 13 and is marked 22 " here.
In Figure 18, the worktable is fashioned as roll 52 formed by a hollow cylinder. It also features a cutting 10 edge 54. The work surface should be conceived in a position comparable to the worktable in Figure 13. Here, too, the roll 52 forming the worktable must feature a swivel or rotary drive for a specific swivel or rotary motion.
15 The bending resistance moment of the retaining roll 13 is preferably considerably greater than that of the worktable 16, 50 or 52.
While this invention has been described as having a preferred design, the present invention can be further 20 modified within the spirit and scope of this disclosure.
This application is therefore intended to cover any variations, uses, or adaptions of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.
Claims (19)
- In combination, a paper roll and a splice for said roll, wherein said splice comprises:
an adhesive tape having two sides, said adhesive tape having at least one adhesive layer on one of said sides for taping an end of an old web and a leading end of a new paper roll, said adhesive layer being affixed by adhesion to an underside of said leading end, said adhesive tape additionally having an adhesive layer on its other side whereby said other side is adhered to said web or said paper roll at an end of the outermost roll winding wherein said outermost winding is taut, said adhesive tape further having respective longitudinal edges, wherein said adhesive layer on said other side of the adhesive tape comprises at least one double-stick adhesive strip, said adhesive strip having two sides and having an adhesive layer on each of said sides, said adhesive strip being adhered at one of said sides to said other side of said tape, at least one adhesive strip being situated in closely spaced relationship to one of said longitudinal edges and being aligned generally parallel thereto, wherein the adhesion of the adhesive layer on the side of the adhesive strip adhering to said tape is considerably less than the adhesion on the other side of said adhesion strip. - 2. The splice according to claim 1, wherein said adhesive tape comprises a first adhesive tape, said splice further including a second adhesive tape fastened to said first adhesive tape whereby said adhesive strip is generally interposed between said first and second tapes and adhered to each of said tapes, said second adhesive tape having a first side and a second side, wherein only said second side has an adhesive layer thereon and said first side is adhered to said adhesive strips, said adhesion of said adhesive strips to the first tape being considerably less than the adhesion of said adhesion strips to the second tape.
- 3. The splice according to claim 2, wherein a cover foil divided in longitudinal direction is applied to the second side of said second adhesive strip.
- 4. The splice according to claim 2, wherein a protective adhesive tape is applied to said paper roll, said adhesive tape being disposed in the area of first tape.
- 5. An adhesive tape for making a web connection to a paper roll, comprising:
a tape member having a front side and a back side, and having respective longitudinal edges, said front side of said tape member including either an adhesive layer or two mutually parallel adhesive layers separated from each other by a narrow space, said adhesive layer or layers supporting a cover foil comprising cover foil members, said cover foil members being separated by a longitudinal seam or by said space; and at least one adhesive strip having two sides and having an adhesive layer on each of said sides, said adhesive strip being adhered to said back side of said tape member by the adhesive layer of one of said sides of said strip, wherein the adhesion of the side of said adhesive strip adhered to the back side of the tape member is weaker than the adhesion of the other side of said adhesive strip, said adhesive strip extending parallel to said longitudinal edges of said tape member. - 6. The adhesive tape of claim 5, wherein a cover foil is applied on the other side of said at least one adhesive strip.
- 7. The adhesive tape of claim 5, wherein at least one adhesive strip is situated generally adjacent each of said longitudinal edges of said tape member, said strips being aligned generally parallel to said edges, said adhesive tape further including another tape member, said another tape member having a nonstick backside wherein said nonstick backside is adhered to said other side of each of said adhesive strips.
- 8. An adhesive tape for making a web connection, comprising:
a tape member having a front side and a back side, and having a respective edge at each longitudinal end thereof, said front side of said tape member including an adhesive layer or two mutually parallel adhesive layers separated from each other by a narrow space, said adhesive layer or layers supporting a cover foil comprising cover foil members, said cover foil members being separated by a longitudinal seam; and at least one adhesive strip having two sides and having an adhesive film on each of said sides, said adhesive film being fashioned generally dot-shaped or as a series of adhesive areas, said adhesive strip being adhered to said back side of said tape member by the adhesive film on one of said sides, wherein the adhesion of the side of said adhesive strip adhered to the back side of the tape member is weaker than the adhesion of the other side of said adhesive strip, said adhesive strip extending parallel to said longitudinal edges of said tape member. - 9. The adhesive tape of claim 8, wherein a cover foil is applied on the other side of said at least one adhesive strip.
- 10. The adhesive tape of claim 8, wherein at least one adhesive strip is situated generally adjacent each of said longitudinal edges of said tape member, said strips being aligned generally parallel to said edges, said adhesive tape further including another tape member, said another tape member having a nonstick backside wherein said nonstick backside is adhered to said other side of each of said adhesive strips.
- 11. An adhesive tape comprising:
a tape member having two sides, one of said sides having a first adhesive layer thereon and the other of said sides having a second adhesive layer thereon, said first adhesive layer being covered by a cover foil subdivided by a longitudinal seam into two parts, said second adhesive layer being disposed stripwise across said other side. - 12. The adhesive tape of claim 11, in which said second adhesive layer comprises at least one film adhesive strip disposed stripwise across said other side, wherein each said film strip is covered by a cover foil.
- 13. A double-stick adhesive tape, comprising:
a tape member having a continuous perforation extending generally therethrough as a longitudinal seam in a center area thereof, said tape member having two sides, each side having respective longitudinal edges and having an adhesive layer thereon, wherein the adhesive layer on one of said sides is covered by a cover foil, wherein on at least one side of said perforation the adhesive layer covered by said cover foil is subdivided into two parts by a seamlike separating line, and wherein the adhesive layer on the other of said sides comprises a plurality of adhesive strips disposed generally parallel to said longitudinal edges, one of said adhesive strips being situated in closely spaced relationship to a longitudinal edge, and another of said adhesive strips being situated adjacent said perforation, said strips being situated on a common side of said perforation. - 14. The double-stick adhesive tape according to claim 13, wherein said adhesive strips on said other side are covered by a cover foil.
- 15. In combination, a paper roll and a splice for said roll, wherein said splice comprises:
an adhesive tape having two sides, said adhesive tape having an adhesive layer on one of said sides which adhesive layer covers substantially all of said side, said adhesive tape being pierced by perforations which extend longitudinally at the central portion of said tape, said adhesive tape having double-stick adhesive strips adhered to its other side, one of said adhesive strips being situated in closely spaced relationship to a longitudinal edge of said tape and being aligned generally parallel thereto, and another of said strips being aligned in closely spaced relationship to said perforations and generally parallel thereto, each of said adhesive strips being situated on a common side of said perforations, said adhesive tape being folded over at a line defined by said perforations to form a double-stick tape wherein a folded over portion of said back side of said tape also adheres to said adhesive strips, wherein the adhesive force of said adhesive strips to said folded over back side portion is stronger than the adhesive force of said adhesive strips to said other side. - 16. A process for making a splice for a web leader and a paper roll using adhesive tape, said paper roll being rotatable so as to wind paper thereon, said paper being wound on said roll in a take-up direction, said web leader having an edge and said paper roll having an axis, wherein said adhesive tape comprises a tape member having a front side and a back side and having respective longitudinal edges, said front side of said tape member including an adhesive layer, said adhesive layer being covered by a cover foil comprising a pair of cover foil members, said cover foil members being separated by a longitudinal seam, said adhesive tape further comprising at least one adhesive strip having. two sides and having an adhesive layer on each of said sides, said adhesive strip being adhered to said back side of said tape member by the adhesive layer of one of said sides of said strip, wherein the adhesion of the side of said adhesive strip adhered to the back side of the tape member is weaker than the adhesion of the other side of said adhesive strip, said adhesive strip extending parallel to said longitudinal edges of said tape member, said process comprising:
keeping said web leader initially distant from said paper roll;
removing one of said cover foil members from the adhesive tape so that a portion of said adhesive layer on said front side of said adhesive tape is uncovered;
applying said uncovered portion of said adhesive layer of said adhesive tape on an exposed portion of said paper roll, said portion being exposed as a result of the removal of the web leader, whereby said adhesive layer of said adhesive strip is situated generally parallel to the axis of the paper roll;
affixing a last winding tautly to the paper roll;
taping together said paper roll and web leader upon removal of said cover foil closer to said exposed portion of said web leader from said paper roll; and detaching an overhang tail portion of said web leader at a joint formed at the juncture of said cover foil members. - 17. The process of claim 16, wherein said exposed portion is brought about in that, in a rewinding device on which an existing paper roll is rewound, the paper roll is stopped, the adhesive tape is applied by means of adhesive strips or adhesive films on the paper roll parallel to its axis, in that said portion of said adhesive layer on said front side of said adhesive tape which is uncovered by removal of one of said cover foil members is positioned foremost in the direction of rotation of the paper roll whereby said paper roll thereafter advances in said direction of rotation until said taped portion has passed a press gap formed between said paper roll and a contact roller in said rewinding device, with a last winding being fixed on the paper roll, wherein a remnant of said paper roll is detachable by a cutter blade.
- 18. The process of claim 16, wherein said exposed portion is brought about in that, in a rewinding device on which an existing paper roll is rewound, the paper roll is stopped, the adhesive tape first is affixed by adhesion on said web end to be wound in the vicinity of a press gap formed between said paper roll and a contact roll; and wherein said adhesive strip includes a cover foil on its other side; said process further comprising;
removing said cover foil from said adhesive strip; and affixing by adhesion said web leader on said paper roll by way of said uncovered adhesion layer of said adhesive strip by continued rotation of said paper roll in said take-up direction of said roll as the adhesive strip passes a squeeze point in said press gap. - 19. A process for making a splice for a web leader and a paper roll using a double-stick adhesive tape, wherein said adhesive tape comprises a tape member having a linear set of first perforations extending generally therethrough in a center area thereof whereby said first perforations comprise a first longitudinal seam, said tape member having a front side and a back side and having respective longitudinal edges, each of said sides of said tape member having an adhesive layer thereon, wherein said adhesive layers are covered by respective cover foils, wherein on at least one side of said first perforations on the front side of said tape member the adhesive layer is subdivided into two parts by second perforations parallel to said longitudinal edge, and wherein said second perforations comprise a second longitudinal seam, said second longitudinal seam being perforated to a lesser degree when compared to said first longitudinal seam and wherein the adhesive layer on said back side comprises a plurality of adhesive strips disposed generally parallel to said longitudinal edges, one of said adhesive strips on said back side being situated generally adjacent a longitudinal edge, and another of said adhesive strips on said back side being situated generally adjacent said first perforations, said process comprising:
maintaining initially a fixed distance between said web leader and said paper roll by forming a loop whereby said loop is temporarily fixed on said paper roll at an edge of the web leader;
removing the cover foil from the adhesive layer on one side of said first perforations on the front side of the tape member so that an adhesive layer is exposed with an adhesive strip being located on the back of the same side of the adhesive tape along a longitudinal edge thereof whereby said adhesive tape is affixed by adhesion to an exposed portion of said paper roll at the uncovered portion of said adhesive surface;
removing said adhesive tape with its part not glued in place and, by means of said adhesive strips on said back side, affixing by adhesion one on top of another with its two parts back to back;
removing the cover foil contained on the front side of said tape member and which to the separation point of the web leader is kept distant from said paper roll is closer than the other cover foil on said front side;
affixing by adhesion the last winding of said roll on the adhesive surface that has been exposed last;
and separating an overhang tail portion of said web leader on the edge of the last exposed adhesion spot or at the joint toward the remaining cover foil.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4010704.3 | 1990-04-03 | ||
| DE4010704 | 1990-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2039631A1 CA2039631A1 (en) | 1991-10-04 |
| CA2039631C true CA2039631C (en) | 2000-02-08 |
Family
ID=6403655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2039631 Expired - Fee Related CA2039631C (en) | 1990-04-03 | 1991-04-03 | Splice and process for making a splice on the leader of a paper roll |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP0580188B1 (en) |
| CA (1) | CA2039631C (en) |
| DE (1) | DE4033900C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8597751B2 (en) | 2005-10-24 | 2013-12-03 | Tesa Se | Easily split adhesive tape, its use and tool for its production |
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|---|---|---|---|---|
| DE10235786A1 (en) * | 2002-08-05 | 2004-02-26 | Maschinenfabrik Wifag | Winding reel preparation for flying change of reels in printing machine involves applying double-sided adhesive tape between beginning of paper web and subjacent web layer of winding reel |
| DE4210329A1 (en) * | 1992-03-30 | 1993-10-07 | Koenig & Bauer Ag | Arrangement for connecting successive paper webs wound into rolls |
| DE4219968C2 (en) * | 1992-06-19 | 1994-04-14 | Koenig & Bauer Ag | Adhesive tip for paper rolls |
| NL9300707A (en) * | 1993-04-26 | 1994-11-16 | Knp Papier Bv | Method of welding a paper web and an adhesive strip for use in this method. |
| DE4413663A1 (en) * | 1994-04-20 | 1995-10-26 | Wifag Maschf | Adhesive for connecting material webs wound on driven rollers |
| JP3553960B2 (en) * | 1994-04-26 | 2004-08-11 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | Garnish tape, garnish method and garnish using garnish tape |
| DE4423387C2 (en) * | 1994-07-04 | 1996-06-20 | Koenig & Bauer Albert Ag | Adhesive tape for attaching a paper web start of a stock paper web roll |
| DE4424901C2 (en) * | 1994-07-14 | 2000-05-25 | Koenig & Bauer Ag | Adhesive label arrangement for fastening a paper web start of a supply paper web roll |
| DE29500653U1 (en) * | 1995-01-17 | 1995-03-30 | Alex Breuer GmbH, 50667 Köln | Glued paper webs |
| DE19628317A1 (en) * | 1996-07-13 | 1998-01-15 | Beiersdorf Ag | Adhesive tape and method of using it |
| DE19830674A1 (en) | 1998-07-09 | 2000-01-13 | Beiersdorf Ag | Adhesive tape and its use |
| US6016989A (en) * | 1998-08-24 | 2000-01-25 | Beloit Technologies, Inc. | Paper web autosplicer |
| DE19902179B4 (en) * | 1999-01-21 | 2005-04-28 | Tesa Ag | Adhesive tape and splice process |
| DE19918220C2 (en) * | 1999-04-22 | 2002-10-24 | Tesa Ag | Splice preparation procedure |
| DE19958223A1 (en) | 1999-12-02 | 2001-07-19 | Beiersdorf Ag | duct tape |
| US6951676B2 (en) | 2000-09-25 | 2005-10-04 | 3M Innovative Properties Company | Butt splicing tapes and butt splicing methods |
| DE10058956A1 (en) | 2000-11-28 | 2002-06-06 | Tesa Ag | Adhesive tape for running reel changes, e.g. in paper splicing, has splitting carrier system with self-adhesive on both sides and notches along front edge where cleavage starts during splicing process |
| DE10112636B4 (en) * | 2001-03-14 | 2006-04-13 | Koenig & Bauer Ag | Method and device for splice preparation of a roll of material |
| DE10118362B4 (en) * | 2001-04-12 | 2006-07-27 | Koenig & Bauer Ag | Method for connecting a web beginning of a roll of material |
| DE10139563B4 (en) * | 2001-08-10 | 2006-12-14 | Man Roland Druckmaschinen Ag | Apparatus and method for preparing a stock paper web roll for flying reel change |
| 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 |
| DE102006003200A1 (en) | 2006-01-24 | 2007-08-02 | Bhs Corrugated Maschinen- Und Anlagenbau Gmbh | Method for splicing material webs and splice device |
| DE102008003337A1 (en) | 2007-10-10 | 2009-04-16 | Tesa Ag | Hand device for unwinding from an adhesive tape with a double-sided adhesive carrier, wherein at least one of the two adhesive sides of the carrier is covered with a release material |
| DE102008023020B4 (en) | 2008-05-09 | 2015-05-07 | Tesa Se | Adhesive tape for carrying out a flying roll change |
| EP2258643B1 (en) | 2009-06-01 | 2015-01-14 | Tetra Laval Holdings & Finance S.A. | Method for feeding a supply station of a packaging unit with a new reel of sheet packaging material, sheet packaging material holder and lift truck |
| DE102009047680A1 (en) | 2009-12-08 | 2011-06-09 | Tesa Se | Use of a splicing tape with laminating strips arranged side by side |
| DE102010029181A1 (en) * | 2010-05-20 | 2011-11-24 | Tesa Se | Splicing tape comprising two splittable fasteners |
| CN108439023B (en) * | 2018-04-02 | 2024-06-21 | 丹阳市雷登智能科技有限公司 | Lens mould tears, seals sticky tape mechanism |
| DE102019203742A1 (en) * | 2019-02-07 | 2020-08-13 | Bhs Corrugated Maschinen- Und Anlagenbau Gmbh | Material web feed device |
| CN115968145A (en) * | 2022-12-06 | 2023-04-14 | 宁波市令通电信设备有限公司 | Novel network cabinet |
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| DE1058524B (en) * | 1954-09-13 | 1959-06-04 | Daily Mirror Newspapers Ltd | Adhesive tape for printing paper rolls |
| JPS525607B2 (en) * | 1972-12-16 | 1977-02-15 | ||
| US4238261A (en) * | 1978-10-02 | 1980-12-09 | The Black Clawson Company | Method for forming a zero tail length splice in a moving web |
| DE3328255A1 (en) * | 1983-08-04 | 1985-02-21 | Siemens AG, 1000 Berlin und 8000 München | ADHESIVE STATION FOR A FAST PRINTER |
| JPS61111264A (en) * | 1984-10-31 | 1986-05-29 | Mitsubishi Heavy Ind Ltd | Tape laminating device |
| GB8723597D0 (en) * | 1987-10-08 | 1987-11-11 | Donabie G | Paper splicers |
| DE3834334C2 (en) * | 1988-10-08 | 1995-01-19 | Voith Gmbh J M | Processing device for preparing the end of a web roll |
-
1990
- 1990-10-25 DE DE4033900A patent/DE4033900C2/en not_active Expired - Fee Related
-
1991
- 1991-03-02 EP EP93114712A patent/EP0580188B1/en not_active Expired - Lifetime
- 1991-03-02 EP EP93120703A patent/EP0610590B1/en not_active Expired - Lifetime
- 1991-04-03 CA CA 2039631 patent/CA2039631C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8597751B2 (en) | 2005-10-24 | 2013-12-03 | Tesa Se | Easily split adhesive tape, its use and tool for its production |
| US8993082B2 (en) | 2005-10-24 | 2015-03-31 | Tesa Se | Easily split adhesive tape, its use and tool for its production |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0580188B1 (en) | 1996-09-11 |
| EP0580188A1 (en) | 1994-01-26 |
| EP0610590B1 (en) | 1997-08-06 |
| CA2039631A1 (en) | 1991-10-04 |
| EP0610590A1 (en) | 1994-08-17 |
| DE4033900C2 (en) | 1995-07-27 |
| DE4033900A1 (en) | 1991-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |