US 3547739 A
Description (OCR text may contain errors)
Dec. 15, 1970 ||.N.BE;UTE
PERFORATED TAPE Filed May 15, 1969 IlllllI .IIIII'III' l MWIIIIIIIIIIIII. Il'. 1| allnlllllllllllqlmnaldvllllnulllllll.Il. IIII'III" llllllllllillIIIIIIIIIIIIII'ILH'HLI( United States Patent O 3,547,739 PERFORATED TAPE Harvey N. Beute, 1311 Stockbridge Ave., Kalamazoo, Mich. 49001 Filed May 15, 1969, Ser. No. 825,022 Int. Cl. 1331i' 5/00; Bosh 19/00, 19/08 U.S. Cl. 156-504 5 Claims ABSTRACT F THE DISCLOSURE An elongated strip of perforated sheet material having an adhesive on one side thereof for attaching the peripheral end or leading edge of a web of rolled sheet material to the remainder of the roll.
BACKGROUND OF THE INVENTION FIELD OF THE INVENTION It is common knowledge to use machines, sometimes referred to as flying pasters, to attach the web of a iirst roll of sheet material to the web of a second roll of sheet material while the web of the second roll is moving at a relatively high rate of speed away from the second roll. This is normally performed by rotating the first roll so that its peripheral speed is approximately equal to the peripheral speed of the second roll and then bringing the first roll into engagement with the web of the second roll. An adhesive material is placed on the outer surface of the first roll adjacent its outer leading whereby the web of the first roll is attached to the web of the second roll. The web of the second roll then threads the web of the first roll through the machinery receiving the second web. This type of webattaching arrangement is used especially in the papermaking or paper-printing or paper-treating industries wherein the paper web being removed from a roll is run through an intricate machine having, as a rule, a number of stages through which the web must pass. It has long since been found highly uneconomical to stop the machine each time a new roll is required and, in the modern highspeed machinery, it is frequently necessary to change rolls every or 2:0 minutes. Each time the machine is stopped for a roll change or a roll repair, it can absorb as much as 15 minutes of downtime, which can be extremely costly to the manufacturer.
In recent years, manufacturers of machines for treating, printing or otherwise performing operations upon a web of paper coming from a roll have been able to increase the speed of such machines which, of course, means that a given size roll of paper is used in a shorter period of time. However, present methods of preparing the roll for the high-speed connection or pasting operation have not been adequate. In particular, it has been diicult to secure the leading or outer end of the new roll so that it could be quickly and easily removed when attached ot the previous web and, at the same time, would remain in a position closely adjacent the roll when rotating at a high rate of speed.
Previously it has been commonplace to apply a number of strips of adhesive or gummed tape to the leading end of the new roll at spaced intervals along the end to minimize resistance to detachment of the leading end from the roll. However, at high speeds the air tends to move 3,547,739 Patented Dec. 15, 1970 under the leading edge, which is rotating into the wind, and thereby rip the leading end loose. In order to overcome this problem, attempts have been made to cover the entire leading end with a solid strip of paper. However, if such paper is strong enough to resist the rather substantial centrifugal force which is generated in the end of the paper at high speeds, then it is too strong to break when the pasting or attaching operation is performed.
Thus, while using individual strips has proven to be the best method to date, such procedure has raised a further problem with respect to the newer high-speed machines. That is, substantial time is required by the machine operator to attach the individual strips to the roll which in many instances may be as much as siX or eight feet in axial dimension. Thus, it has often become necessary to have some of the rolls taped down in advance of their use by someone other than the machine operator, and most machine operators prefer to do their own taping. Accordingly, it has become important to find a way of applying the hold-down strip or tape or individual tapes whereby the application can be accomplished in substantially less time than previously available.
Accordingly, a primary object of this invention is the provision of a device for holding or attaching the leading end of a relatively large roll of sheet material rotating at a relatively high speed so that the leading end can be removed from the rest of the roll when attached to another strip of sheet material moving at the same rate of speed, but which prevents the leading end of the roll from being torn loose by movement through the air at the high rate of speed.
A further object of this invention is the provision of a device, as aforesaid, which can be quickly applied by any person capable of operating a machine for performing a function upon a roll of sheet material.
A further object of the invention is the provision of a device, as aforesaid, which is applicable to sheet materials in a wide range of thicknesses, weights and strengths.
Other objects and purposes of this invention will become apparent to persons familiar with devices of this general type upon reading the following descriptive material and examining the accompanying drawings, in which:
FIG. l is a broken, schematic, side elevational view of a high-speed pasting machine.
FIG. 2 is a perspective view of a roll of sheet material embodying the invention.
FIG. 3 is a sectional view taken along the line III- III in FIG. 2.
FIG. 4 is a sectional view substantially as taken along the line IV-IV in FIG. 2 but showing the web after attachment to another web.
FIG. 5 is a side elevational view of a fragment of a strip embodying the invention.
FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5.
FIG. 7 is a side elevational View of a modified strip as applied to a roll of sheet material.
For convenience in description, the terms inner, outer and derivatives thereof will have reference to the geometric center of the roll appearing in FIG. 2 or the strip appearing in FIG. 5 and associated parts. The terms leading edge, peripheral end or the like will have reference to the edge of the sheet material on the outside of the roll and extending substantially axially thereof.
SUMMARY OF THE INVENTION The objects and purposes of the invention, including those set forth above, have been met by providing an elongated, perforated and rupturable strip having an adhesive material on one side thereof whereby the strip can be applied to and along the leading edge of a roll of sheet material for securing said edge to the remainder of the roll. The strip is attached so that the leading edge of the web on the roll vextends approximately along the center line of the openings in the `strip.
DETAILED DESCRIPTION The machine illustrated in FIG. 1 is one of several types frequently referred to as pasters, by means of which the web of paper or other sheet material on the roll 11 (FIG. 2) is attached to the web of another roll, such as the roll 12 on the machine 10 of FIG. 1. More specifically, the machine includes a pedestal 13 supporting a-substantially horizontal shaft 1-4 upon which a pair of spaced spiders 16 and 17 are mounted. The spiders 16 and 17 have three uniformly radial arms 1f8 and 19, respectively, which support shafts 21, 22, 23 extending therebetween parallel with the shaft 14.
In this embodiment, motors 24 are mounted on the arms 1-8 of the spiderv16 and directly connected to the shafts 21, 22 and 23 for rotating same. The spiders 16 and 17 can be rotated by means (not shown) to move the roll 11 into the position of roll 12 and, subsequently, move the roll 11A into the position of roll 11.
The machine 10 has an upright column 26 secured to the pedestal 13 and pivotally supporting an arm 27 on the upper end thereof. A cylinder 28, which serves as an idler, is rotatably supported upon the arm 27 for rotation around an axis parallel with the shaft 14. The cylinder 28 is urged against the peripheral surface of the roll 11 by a spring 29 connected to an dextending between the column 26 and the arm 27. Thus, the web 32 of the sheet material from the roll 12 passes under the cylinder 28 and thence to some other machine, such as a printing machine, coating machine or the like. The cylinder 28 is arranged so that it will hold the web 32 against the peripheral surface of the roll 11 when said roll is moved by the machine 10 into the position thereof appearing in FIG. 1, such movement effecting the connection between the web 33 of the roll 11 and the web 32 of the roll 12.
The foregoing description concerns a machine, the substance of which is part of the prior art. Also, the rolls 11, 11A and 12 may be substantially conventional rolls of paper, for example, manufactured in a well-known manner by well-known procedures.
The web 33 of roll 11 (FIG. 2) has an outer edge 34 which is secured to the next adjacent layer of the web 33 by a strip 36 having a plurality of spaced openings or perforations 37 aligned lengthwise of the strip 36. The perforations 37 preferably are uniformly spaced, of uniform length and aligned along the lengthwise center line of the strip '36'.
In one preferred embodiment of the invention, the strip 36 is fabricated from SO-pound paper of average strength, and each opening 37 is elongated lengthwise of the strip. Moreover, the length of each opening 37 is at least four times the distance between the two adjacent openings, hence, at least four times the width of the element 318 between two adjacent openings.
In FIG. 5, the ends of the openings 37 are shown as semicircular, but the openings may be substantially rectangular as shown at 37A in FIG. 6. Accordingly, at least the central portions of elements 38A between the openings 37A are of substantially uniform width lengthwise thereof (transversely of the strip 36), lwhich facilitates attachment of the strip.
The strip 36 is coated on one side with an adhesive 39 (FIG. 7) whereby the strip is attached to the roll 11 so that it extends lengthwise along the outer edge 34 of the web 33, half 4of the strip being connected to the portion of the web against the edge 34 and the other half being attached to the next layer of the web 32.
The side of the strip 36, opposite that containing the adhesive, is provided with a plurality of aligned lines 42 which are preferably coincident with the lengthwise axis 4 of the openings 37, thereby bisecting each of the elements 38. The lines assist the operator to align the openings 37 along the edge 34 -of the web 33 when the strip 36 is being applied to the roll 11. It is important that the elements 38 constitute the only portions of the strip 36 which bridge the edge 34 of the web 33.
The portion of the web 33 near the edge 34 thereof is coated on the exterior surface with a contact adhesive 43 which permits attachment 1of the web 33 to the web 32 when the roll 11 is moved by the machine 10 into the position thereof appearing in FIG. 1.
OPERATION Under normal circumstances, each paper machine operatoi or printing machine operator prefers to prepare his own roll for the pasting or transfer operation whereby the web 33 Iof roll 11, for example, is attached to the web 32 of roll 12. Frequently, the operator prefers to have the edge 34 of the web 33 at a slight angle to the axis of the roll sothat one end of the edge is pulled loose from the roll during the pasting operation before the other end is, thereby peeling the edge away from the roll. The operator then applies this strip either manually or by a tape dispenser starting at one end of the edge 34 andworking along the edge and making such that the lines 42 across the elements 38 are substantially aligned with the edge 34. Ordinarily, attachment of the strip 36 to the roll 11 can be accomplished in less than a minute. Moreover, such attachment can be effected either before or after the roll is mounted upon the machine 10.
The roll to be pasted or transferred will occupy the position of roll 11A in FIG. 1 just prior to the pasting operation. Accordingly, the motor 24 connected to the shaft 21 will be energized and the roll 11A will be r0- tated in a counterclockwise direction, in this instance, and by appropriate synchronizing means (not shown) will be given a peripheral speed equal to the peripheral speed of the roll 12. The roll 11A will then be moved by the machine 10 into the position of roll 11 so that the peripheral surface of said roll engages the web 32. The adhesive 39 on web 33 (FIG. 2) will cause the web 33 to adhere to the web 32 (FIG. 4) and thereby rupture the elements38 of the strip 36. As soon as the operator can see a successful pasting `operation has been performed, and the web 33 is actually moving through the appropriate machinery, he can then break the web 32 and terminate the rotation of roll 12.
In one successful embodiment, the openings 37 were approximately one inch long by three-eighths inch wide and the elements were approximately one-eighth inch wide. r[his arrangement of dimensions has been found satisfactory for use with paper stock ranging from 25 pounds to pounds. That is, lthe elements 38 are of sufficient strength to resist rupture due to the centrifugal force applied to the edge of the web, and the elements 38 are sufficiently close together that the air does not lift the edge 34 away from the roll between a pair of adjacent elements. Moreover, even if the edge does lift slightly, the amount of air entrapment which can occur between a pair of elements 38 is insufficient to rupture them or interfere with the pasting operation. The strip 36 will normally be made of a cellulose fiber material, such as paper, but other materials might conceivably be used because of the special requirements of the material to which the strip is applied.
Although two specic forms or shapes of openings 37 have been disclosed herein for illustrative purposes, it will be recognized that other opening shapes may be used. Also, even though no particular advantage may be achieved by changing the relative sizes and dimensions of the openings in the elements from those suggested above, changes in such relative dimensions and sizes can be made without materially exceeding the scope of this invention. In fact, it will be seen that slight decreases in the weight of the paper being used in the strip could be expected to justify a slight increase in the width of the elements 318 between the openings 37, and the reverse results would be expected from an increase in the weight of the paper stock for the strip.
Although particular preferred embodiments of the invention have been disclosed above for illustrative purposes, it will be recognized that variations or modifications of the disclosed structure, including the rearrangement of parts, lie within the scope of the present invention.
The embodiments of the invention in which an exclusive property or privilege is claimed are dened as follows:
1. A device for attaching the leading edge of one roll of sheet material to the web of another roll of sheet material wherein said rolls are being rotated at substantially equal peripheral speeds, comprising:
an elongated, relatively narrow strip of rupturable sheet material of substantially uniform thickness; adhesive means substantially covering one side of said strip for securing said leading edge of said one roll to the remainder of said roll, said strip extending lengthwise of and laterally beyond said leading edge;
means defining a plurality of uniformly spaced openings through said strip along aline between and parallel with the lateral edges of said strip whereby arl elongated, transverse element is provided between each pair of adjacent openings; and
the dimension of each said opening lengthwise of said strip being substantially greater than the corresponding dimension of each element, said elements being arranged to extend across the leading edge of said one roll.
2. A device according to claim 1, wherein said openings are arranged along the lengthwise center line of said strip means; and
wherein said strip means is fabricated from paper stock in the range of from 25 to 75 pounds.
3. A device according to claim 1, wherein said strip means is fabricated from paper stock; and
wherein said openings are elongated lengthwise of said strip means and said dimension thereof is at least four times the corresponding dimension of said elements.
4. A device according to claim 1, including marks on said elements on the other side of said strip means, said marks being aligned lengthwise of said strip means and substantially bisecting said elements for aligning said strip means with said leading edge of said one roll.
5. A device according to claim 4, wherein said elements have central portions with substantially parallel edges transversely of said strip means, said marks being on said central portions.
References Cited UNITED STATES PATENTS 3/ 1966 Haselow et al. 156-504 9/1969 Chestnut et al. 156--504 'U.S. Cl. XR. 156-502