AU605923B2 - Sheet material for masking apparatus - Google Patents

Description

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S F Ref: 75883 FORM COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION 5923 Tihis doIumment contains the amendmnents made under Sctiuo 49 and is correct for printing Class Int Class

(ORIGINAL)

FOR OFFICE USE: Complete Specification Lodged: Accepted: Published: Priority: Related Art: 040 0 0 09 0 o 0 0 0 o o o '4o 0 0 9 0900 4 0 S0 0 00 0 9 UO O Name and Address of Applicant: Address for Service: Minnesota Mining and Manufacturing Company 3M Center, Saint Paul Minnesota UNITED STATES OF AMERICA Spruson Ferguson, Patent Attorneys Level 33 St Martins Tower, 31 Market Street Sydney, New South Males, 2000, Australia Complete Specification for the invent,., entltled: 0 ii Sheet Ma t erial for Mask,;g Apparatus The following statement is a full description of this invention, including the best method of performing it known to me/us 5845/4

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ABSTRACT OF THE DISCLOSURE An elongate sheet of flexible, fluid impervious material is folded into longitudinally extending pleats and coiled into a roll for use with masking apparatus of either the stationary or the hand held type. The sheet is coiled in a direction for continuous application of tape to overlap an edge of the outer surface of the roll as the folded sheet and the tape are dispensed. The first pleat is provided with a laterally projectina terminal portion to receive the tape and prevent contact between the underlying sheet material and the tape.

After a length of the material is dispensed, severed from the roll and adhesively affixed to the surface to be masked, the sheet is extended laterally to unfold the pleats.

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;t- SHEET MATERIAL FOR MASKING APPARATUS 3 BACKGROUND OF THE INVENTION 4 Field of the Invention 6 a 15 16 0 0 16 004t: 02 9 21 0 44 19 21 9 S2 22 '9(923 941 a 124 125 (t 626 27 28 This invention relates to material for masking surfaces preparatory to painting or application of other coatings.

More particularly, the present invention relates to improvements in coiled sheet material especially adapted for use in connection with masking apparatus of the type for dispensing tape and sheet material.

In a further and more specific aspect, the instant invention concerns sheet material capable of masking a surface of greater width than the width of the roll of coiled material.

The Prior Art Apparatus for dispensing tape and paper for the purpose of masking a surface preparatory the application of paint or other treatments are well known. In general, the devices are commercially available in two basic conifigurations. One form, frequently termed an apron taper, tends to be relatively bulky and is considered a stationary device. The other, being sufficiently compact for portable manipulation, is usually referred to as a hand held masking machine.

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c4cc~-( i i 1 3Commonly, both varieties include a frame having means for 3 rotatably supporting a roll of coiled sheet material and for 4 rotatably supporting a roll of pressure sensitive tape. The roll of tape is positioned for continuous application along an 6 edge of the sheet material as the tape and sheet material are 7 uncoiled during dispensing. Usually, the devices also include a 8 blade for severing the dispensed masking material.

9 The frame of the apron taper is provided with feet. During 11 use, a taped edged sheet or apron of appropriate length is shown 12 from the stationary apparatus and then applied to the surface to 13 be masked. A handle is integral with the portable device. The 14 tape is applied as the machine is drawn along the surface during S0a .15 the masking procedure.

i '16 17 Conventionally, the width of the surface which can be 18 masked is dictated by the width of the roll of sheet material.

"19 While sheet material of various widths are usually interchangeably dispensable from a single masking apparatus, the A;21 ultimate width is finite as determined by? the capacity of the 0 t 22 device. For example, the stationary dispensing apparatus 23 usually includes a pair of spaced apart frame members between 24 which the roll of sheet material must fit. A portable device is usually limited by the physical capability of the usee. For 26 purposes of reference, forty-eight inches is considered the 27 practical limit for apron tapers while portable machines re iillimited, to twenty-four inches. Even so, operation becomes increasingly cumbersome as sheet width increases.

In an attempt to provide a remedy and mask surfaces of greater width than the width of the sheet material, the prior art has provided rolls of folded sheet material. After the tape has been secured, the material is unfolded to drape over an extended surface. However, such sheet material which has been folded prior to being coiled is not usable in connection with conventional tape and paper dispensing apparatus of the type under immediate consideration.

13 14 0 0 15 o 15 a 0 004, 16 18 S"19 *i e 0 1 21 4 i 22 23 25 4, 26 27 28 The application of the tape to the sheet material requires great precision. Otherwise, the tape will adhere to more than one pleat of the folded sheet material rendering unfolding impossible. Therefore, the application of the tape to the sheet material has been limited to the manufacturing process where exacting tolerances can be exercised. Accordingly, the masking material has been available only as pre-taped rolls.

In addition to not being suitable for use in connection with tape and sheet material dispensing apparatus, other deficiencies are readily apparent. Exemplary is the fact that the relatively thik masking tape is responsible for an enlargement at one end of the roll which presents difficulty in packaging and limits the length of material which can be practically coiled. Since tape tends to deteriorate with time, shelf or storage life is limited. Further, utilizing a roll not a.i.--.iiiiiuiiii...n 3 i__iii/ i 11 12 13 14 o a1 0 "16 22 2 3 417 S18 0 0 o 2 6 20 o 0 21 o 22 ,23 25 27 supported by a dispensing apparatus is cumbersome and unwieldy to manipulate.

It would be highly advantageous, therefore, to remedy the foregoing and other deficiencies in the prior art.

Accordingly, it is an object of the present invention to provide improvements in sheet material especially adapted for use in connection with masking apparatus of the type for dispensing tape and sheet material.

Another object of the invention is the provision of masking sheet material which will extend the normal capacity of the maskincg apparatus.

And another object of this invention is to provide a roll of coiled sheet material for masking a surface of greater width than the width of the roll.

Still another object of the invention is the provision of a roll of folded, coiled sheet iaterial especia.lly devised to have masking tape applied thereto at the time of dispensing.

Yet another object of the instant invention is to provide convenient, easily usable means for masking surfaces of extended area.

4 131--~ i t~ 11 12 13 14 0 o 915 0 0 17 00 4 1 o "19 4 21 44 t I ii *4 f4 Yet still another object of the invention is the prqvision of folded masking sheet material which is readily unfolded and draped after being adhesively affixed to the surface to be masked.

And a further object of the immediate invention is to provide a roll of coiled sheet material which is uniquely folded to insure that the tape adheres only to a selected portion of the material.

Still a further object of the invention is the provision of a roll of coiled sheet material in which the number of folds are variously selectable.

Yet a further object of this invention is to provide folded coiled masking sheet which is readily fabricated of various materials.

And yet a further object of the invention is the provision of a roll of masking material according to the above which is unencumbered to facilitate packaging, storing and handling.

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1 SUMMARY OF THE INVENTION 3 Briefly, to achieve the desired objects of the instant 4 invention in accordance with a preferred embodiment thereof, provided is an elongate sheet of flexible, fluid impervious 6 material having first and second longitudinal edges and first 7 aad second sides. A fold extending longitudinally intermediate 8 the edges defines a doubled sheet including first and second 9 pleats. The first pleat resides intennediate the first edge and the fold. The second pleat resides intermediate the fold and 11 the second edge. The fold is in a direction such that the 12 second side of the second pleat lies in substantial 13 juxtaposition with the second side of the first pleat. The i4 doubled sheet is coiled in a direction of rotation to expose the 15 first side of the first pleat for receiving tape along the first 16 edge thereof.

1'7 18 In accordance with a further embodiment of the invention, 19 the first pleat has a width which is greater than the width of the second pleat whereby the second edge is placed inboard of 21 the first edge. Thus there is defined a longitudinally i S 22 extending terminal portion adjacent the first edge for receiving 23 the tape thereon.

In accordance with a further embodiment of the invention,

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26 the elongate sheet includes a plurality of spaced apart folds 27 including a first fold nearest the first edge and a last fold 28 nearest the second edge. The plurality of folds define a 6 L I 1 redoubled sheet including a pleat intermediate adjacent ones of 2 the plurality of folds, an initial pleat intermediate the first 3 edge of the first fold and a terminal pleat intermediate the 4 last fold and second edge. The folds are in alternating directions whereby respective sides of adjacent pleats lie in 6 substantial juxtaposition. Further, the plurality of folds are 7 periodically spaced whereby alternate ones are substantially II 8 aligned in respective planes generally perpe. :ular to the axis 9 about which the redoubled sheet is coiled.

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i S -i i, 1 BRIEF DESCRIPTION OF THE DRAWINGS 2 3 The 4 oregoing and further and more specific objects and 4 advantages of the instant invention will become readily apparent to those skilled in the art from the following detailed 6 description of preferred embodiments thereof taken in 7 conjunction with the drawings in which: 8 9 Fig. 1 is a perspective view of a roll of coiled sheet material constructed in accordance with the teachings of the 11 instant invention as it would appear when being used in 12 connection with a conventional masking apparatus; 13 14 Fig. 2 is a vertical sectional view, on an enlarged scale, S",15 taken along the line 2-2 of Fig. 1 and illustrating the 4 0 *16 inventive sheet material in greater detail; 17 .o 18 Fig. 3A is' a view generally corresponding to the view of S"19 Fig. 3 and showing the sheet material as it would initially appear after being applied to a surface to be masked.

'21 4 22 Fig. 3B is a view generally corresponding to the view of 23 Fig. 3A and showing the initial step of unfolding the material; 4 Fig. 3C is a view generally corresponding to the view of 6 Fig. 3A and showing the material as it would appear during an 27 intermediate stage of being unfolded; 28 8 i L -i 1 li-. i C. 9 11 12 13 14 16 o{"t 17 o 18 04 4 0 t4 a4 119 2" 1 22 23 24 Fig. 3D is a view generally corresponding to the view of Fig. 3A showing the material as it would appear when completely unfolded and draped over the masked surface; Fig. 4A is a view generally corresponding to the illustration of Fig. 3A and showing an alternate embodiment thereof; Fig. 4B is a view generally corresponding to the view of Fig. 4A and showing the initial step of unfolding the material; Fig. 4C is a view generally corresponding to the view of Fig. 4A and showing the material as it would appear during an intermediate stage of being unfolded; Fig. 4D is a view generally corresponding to the view of Fig. 4A showing the material as it would appear when completely unfolded and draped over the masked surface; Fig. 5A is a view generally corresponding to the view of Fig. 3A and showing yet another embodiment of the invention; Fig. 5B is a view generally corresponding to the view of 5A and showing the initial step of unfolding the material; Fig.

and S(.i; 1 Fig. 6 is a respective view of a coiled roll of sheet 2 material illustrating yet ',ler embodiment incorporating the 3 principals of the instant invention.

Ii 2 t i i ii i "r ~a DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 3 4 6 7 8 9 11 12 13 14 "15 S 16 17 o oo20 0 0 0 22 o 0 24 26 27 28 Turning now to the drawings, in which like reference characters indicate corresponding elements throughout the several views, attention is first directed to Fig. 1 which illustrates a masking apparatus, generally designated by the reference character 10 for dispensing sheet material and pressure sensitive adhesive. Herein chosen for purposes of illustration as being of the portable or manually manipulatable type, masking apparatus 10 includes frame 12 having first holder 13, second holder 14 and handle 15. Holders 13 and 14, more specifically, are in the form of rotatably mounted spindles for supporting a roll of coiled sheet and a roll of pressure sensitive, respectively. Cutting blade 17 is also carried by frame 12. A roll of conventional masking tape is shown as being mouuted upon second holder 14.

A roll of coiled sheet material, generally designated by the reference character 20, having first end 22 and second end 23 and incorporating the principals of the instant invention is carried by first holder It is noted that the width of roll 20, the distance between ends 22 and 23, generally corresponds with the length of cutter blade 17. Further details of roll will je discussed presently.

As will be immediately understood and appreciated by those skilled in the art, a ribbon of tape 24 from roll 18 extends over ani is secured to roll 20. The ribbon of tape 24 overlaps i 7 24 162/88 1 2 3 4 6 7 8 9 12 13 14 0 0 9 'o 15 o16 0 a .o0. 17 18 19 o 20 o 21 22 S23 24 '26 27 28 end 22 of roll 2P. That is, that portion of the ribbon adjacent the inner edge is secured to the outer surface of roll 20 while that portion of the tape adjacent the outboard edge remains free to be affixed to the surface to be masked. As the apparatus is moved in the direction indicated by the arrowed line A, the masking material 20 and the tape 18 are progressively uncoiled for continuous dispensing. The direction of uncoiling of roll of tape 18 and of roll 20 are designated by the arrowed lines B and C, respectively. The exposed edge of ribbon 24 is continuously affixed to the surface 25 either by manual pressure or by applicator 27 integral with frame 12. When the desired length of material has been dispensed, blade 17 is employed to sever both the tape and the tasking sheet.

The foregoing brief description is specifically directed to a masking apparatus of the type usually referred to as a hand held masking machine. The structure and principals of operation are equally analogous to the stationary device commonly referred to as an apron taper. The foregoing is set forth for purposes of orientation and reference in connection with the ensuing description. Details not specifically illustrated nor described will be readily apparent to those skilled in the art.

In the foregoing description, roll 20 was treated as a conventional prior art roll of masking sheet commonly used in connection with machines of the type. The conventional roll consists of a single roll of paper having a sheet width corresponding to the width of the roll. Accordingly, the area

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6 7 8 9 11 12 13 14 15 16 B0 17 Sa go o18 19 P 0 0 20 o, 21 o I 22 2 23 S 24 25 0 1 26 which can be masked also corresponds to the width of the roll.

It is a principal of the instant invention that the inventive sheet material is utilized as a conventional prior art roll during the above described masking procedure.

With reference to Fig. 2, it is seen that the coiled sheet material of roll 20 comprises an elongate sheet, generally designated by the reference character 30, having first longitudinal edge 32, second longitudinal edge 33 and first and second sides 34 and 35, respectively. Sheet 30 is divided by a plurality of folds which, for purposes of reference, may be considered to be first folds 37 and second folds 38, into a plurality of pleats 39 residing intermediate adjacent folds. An initial pleat 40 resides intermediate first edge 32 and the first of the first folds 37. A terminal pleat **sides intermediate the last of the second pleats 38 and edge 33.

Each of the first folds 37 are made in a dirernion which is opposite to the direction of each of the second folds 38.

Accordingly, respective sides of the adjacent pleats lie in juxtaposition. That is, side 35 of initial pleat 34 is adjacent side 35 of the second pleat. similarly, side 34 of the second pleat is adjacent side 34 of t; hird pleat. A terminal portion 43 of initial pleat 40 adjacent first edge 32 projects beyond the second folds 38.

1 2 3 4 6 7 8 9 11 12 13 14 6 0 S 15 S16 17 19 0 B 20 .21 4 09 0 .21 22 2 ,23 e t ^24 25 4 26 2.7 28 The several folds and pleats define a redoubled sheet which is coiled into roll 20 in a direction such that first side 34 of initial pleat 40 is continuously presented as the outer surface.

Accordingly, the ribbon of tape 24 is continuously applied to side 34 of terminal portion 43 during dispensing. Particularly noted in the instant illustration, is the Eact that a portion of the ribbon 24 is secured to the side 34 of sheet 30 while a portion of the ribbon 24 is free to be affixed to the surface to be masked. It is also noted, that in accordance with the immediately preferred embodiment, each of the first folds 37 are aligned in a plane which is generally perpendicular to the axis about which the redoubled sheet is coiled. Similarly, each of the second folds 38 are aligned in a second plane which is also perpendicular to the axis about which the redoubled sheet is coiled.

The thickness of the pleats seen in Fig. 2 is greatly exaggerated for purposes of illustration. Preferably, sheet is fabricated of a relatively thin, plastic film. The thickness of the film is in the range of .0002 inches to .0400 inches, while the generally preferred thickness is .0004 inches.

As clearly illustrated in Fig. 2, terminal portion 43 is cantilevered. That is, the terminal portion of one coil of roll 20 is separated from the terminal portion of the succeeding coil by the thickness of the intervening pleats. For proper receipt of the tape, terminal portion 43 must be provided with at least minimal support. As is obvious, the support of the terminal A '1 1 portion is inversely proportioned to the width. For this 2 reason, the maximum preferred width of terminal portion 43 is 3 .312 inches. The minimum width can be anything greater than 0 4 for reasons which will be explained presently. A range of .063 to .188 has found to have performed most satisfactorily, 6 7 After being applied to surface 25 by tape 24, redoubled 8 sheet 30 will appear as generally illustrated in Fig. 3A. For 9 clarity of illustration, the pleats have been slightly expanded and the length of terminal portion 43 exaggerated. It being 11 understood that in actuality, the surface 25 and the several 12 pleats will lie in close juxtaposition. The number of folds and 13 pleats in sheet 30 are selected such that the ends 32 and 33 14 extend in opposite directions. Further noted is the fact that terminal pleat 42 and second end 33 lie adjacent surface .16 17 The unfolding and draping procedure is begun, as viewed in o o o18 Fig. 3B, by urging terminal pleat 42 in the direction of arrowed o po 19 line D. During actual use, terminal pleat 42 is grasped by the o o20 user proximate edge 33 and pulled in the indicated direction.

21 In response to continued pulling, each successive fold is 22 unfolded as seen in Fig. 3C. The pulling and unfolding s 23 continuous until, as viewed in Fig. 3D, the sheet 30 is 24 completely unfolded and draped over the surface to be masked.

4' S2'6 It is noted that during the procedure described in 27 connection with Figs. 3A 3D, each of the second folds 38 were 28 readily free to move. That is, none were inadvertently secured 27 practical limit for apron tapers while portable machines re 2 1 under the ribbon of pressure sensitive adhesive tape 24. This 2 is attributed to the fact that terminal portion 43 projects 3 beyond any secorld fold 38. It has been determined that the 4 minimal width of terminal portion 43 may be any dimension greater than 0.000 inches. A suggested minimal measurement is 6 0.003 inches.

7 8 The number of folds and pleats in a given sheet of masking 9 material is selectively variable. With reference to Fig. 4A there is seen an alternate embodiment of the invention including 11 sheet 50 having first edge 52, second edge 53, first side 54 and 12 second sid^ 55. Sheet 50 is divided by first folds 57 and 13 second Colds 58 into a plurality cf pleats 59. Initial pleat 14 extends between first edge 52 and the first of the first folds S 57. A terminal pleat 62 extends between the last of the first 16 pleats and the second edge 53. Also included is a terminal 17 portion 63 carried by initial pleat 60 adjacent first edge 52 I 18 and projecting beyond the second folds 58.

19 Sheet 50 is redoubled by a number of folds and pleats i 21 selected such that first end 52 and second end 63 extend in the 22 same direction. In all other aspects not specifically 23 described, sheet 50 is analogous to sheet 24 25 Again, in general similarity to the previously described 26 embodiment, the unfolding of sheet 50 is initiated by drawing 27 the terminal pleat 62 in a direction away from tape 24 as 28 indicated by the arrowed line E. The unfolding procedure -I i 4 6 7 8 9 11 12 13 14 0 0015 *0 0 0 0 1 0000 al 17 *t4 "eg :18 0 .4 continuous until the sheet 50 is substantially straightened to lie over the surface 25 as seen in Fig. 4D.

Referring now to Fig. 5A there is seen yet another embodiment of the invention including an elongate sheet, generally designated by the reference character 70, having first longitudinal edge 72, second longitudinal edge 73, first side 74 and second side 75. In contrast to the pieviously described embodiments, sheet 70 is divided by a single fold 77 into a first pleat 78 and a second pleat 79. Fold 77 is turned in a direction such that first side 75 of first pleat 78 lies in juxtaposition with second side 75 of second pleat 79. Terminal portion 80 carried by first pleat 78 projects beyond second edge 73.

The sheet 70 is unfolded over surface 25 in a manner generally analogous to the previously described embodiments as seen in Fiq. The elongate sheets described in connection with the several embodiments of the invention are fabricated of a flexible, fluid impervious material. Especially preferred is a thermal plastic resin such as polyethylene, polypropylene or polyester. The embodiments may also be fabricated of conventional materials such as paper products. The light transmission of the several materials is readily variable in accordance with the user's desires. The material may be opaque, translucent or transparent. The transparent and opaque 0 20 o 20 4 0r 1 21 22 r 0l 23 *0 24 S 25 26 27 28 C 1 materials provide for light transmission whereby, for example, a 2 large surface having windows or lighting fixtures, may be 3 continuously masked without substantially diminishing 4 illumination within a room or other enclosure. Opaque or translucent material provides a readily visible indication that 6 an area has been masked.

7 8 Referring to Fig. 6 there is seen a roll of coiled sheet, 9 embodying the principals of the instant invention as specifically set forth in the foregoing detailed description, 11 having indicia 92 printed thereon. The indicia may be of any 12 selected wordage and in any predetermined pattern. The i. 'rcia 13 may be selected to convey a particular message such "wet 14 paint", the manufacturer's logo or other designation. When used in combination with transparent sheet material, the indicia 16 serves as a readily visible indicator that an area has been 17 masked.

18 19 Various changes and modifications to the embodiments herein O 20 for purpose of illustration will readily occur to those skilled 21 in the art. To the extent that such modifications and 22 variations do not depart from the spirit from the invention, 23 they are intended to be included within the scope thereof which 24 is limited only by a fair assessment of the following claims.

S26 Having fully described and disclosed the present invention 27 and alternately preferred embodiments thereof in such clear and 18

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1 concise terrr~s as to enable those skilled in the art to practice 2 and understand the same, the invention claimed is: 0 00 o 0 o 0 0 4*0044 4 0 4000 4000 40004 0 00 0 00 4 00 0 0 19

Claims (14)

1. An Improved roll of coiled sheet material especially adapted for use In combination with a sheet and tape dispensing apparatus, which apparatus includes a first holder for rotatably supporting a roll of said coiled sheet material, and a second holder for rotatably supporting a roll of tape said tape being continuously applied along an edge of said sheet as said sheet and said tape are uncoiled and dispensed from said apparatus, and for covering a surface to be masked of greater width than the width of the roll of coiled sheet material, said improved roll of coiled sheet material comprising: oo 0 a) an elongate sheet )f flexible, fluid-impervious material having .first and second longitudinal edges, and first and second sides; and o" c, b) at least a fold extending longitudinally intermediate said edges to define a doubled sheet including a first pleat intermediate said first edge and said fold, and at least a second pleat Intermediate said fold and said second edge and having the second side thereof lying in substantial juxtaposition with the second side of said first pleat, said first pleat having a width greater than the width of said second oDO 0 pleat to define a terminal portion of said first pleat intermediate said first and said second edges, said doubled sheet being coiled in a direction of rotation fori v receiving said tape along said terminal portion on the first side of sx\cl\ pleat as said sheet material is uncoiled and dispensed from said apparatus.

2. The Improved roll of coiled sheet material of claim 1, wharein said elongate sheet is in the form of thermoplastic resin.

3. The improved roll of coiled sheet material of claim 1, wherein said elongate sheet Is in the form of a paper product.

4, The improved roll of coiled sheet material of claim 1, wherein said elongate sheet has a thickness in the range of 0,0002 inches to 0.0400 inches, The Improved roll of coiled sheet material of claim 1, wherpin said elongate sheet is transparent.

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6. The improved roll of coiled sheet material of claim 1, wherein said elongate sheet is translucent.

7. The improved roll of coiled sheet material of claim 1, wherein said elongate sheet is opaque.

8. The improved i'oll of coiled sheet material of claim 1, further including periodically spaced indicia carried on said elongate sheet.

9. The improved roll of coiled sheet material of claim 1, wherein said elongate sheet further includes at least a second fold. An improved roll of coiled sheet material especially adapted for use in combination with a sheet and tape dispensing apparatus, which apparatus includes a first holder for rotatably supporting a roll of said coiled sheet 1 material, and o a second holder for rotatably supporting a roll of tape 'o0 said tape being continuously applied along an edge of said sheet as 0 said sheet and said tape are uncoiled and dispensed from said apparatus, Sand for covering a surface to be masked of greater width than the width of roll of coiled sheet, said improved roll of coiled sheet material comprising: a) an elongate sheet of flexible fluid Impervious material having 1) first and second longitudinal edges, and 11) first and second sides; and b) a plurality of spaced apart folds, Including a first fold nearest said first edge and a last fold nearest said second edge, extending oU' longitudinally intermediate said edges to define a redoubled sheet including I) a pleat intermediate adjacent ones of said plurality of folds 11) an initial pleat intermediate said first edge and said first fold, and ii) a terminal pleat intermediate said last fold and said second edge, said plurality of folds being in alternating directions whereby respective sides of adjacent pleats lie in substantial juxtaposition, said initial pleat including a longitudinally extending ter;ninal portion projecting laterally outward from said redoubled sheet, said doubled sheet being coiled in a direction of rotation for receiving said tape along said terminal portion on the first side of said Initial pleat as said sheet material is uncoiled and dispensed from said apparatus.

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11. The improved said plurality of folds pleat and said terminal respective folds.

12. The improved said plurality of folds pleat and said terminal folds, roll of coiled sheet material of claim 10, wherein are selected from a quantity such that said initial pleat extend in opposite directions from the roll of coiled sheet material of claim 10, wherein are selected from a quantity such that said initial pleat extend in like directions from the respective

13. The improved roll of coiled sheet material of claim 10, wherein said plurality of folds are periodically spaced whereby alternate ones are substantially aligned in respective planes generally perpendicular to the axis about which said redoubled sheet is coiled,

14. The Improved roll of coiled sheet material of claim 10, wherein a u o said first pleat has a width greater than the width of said second pleat S whereby said second edge is spaced inboard of said first edge. A roll of coiled sheet material substantially as described herein with reference to and as illustrated by Figs 1 to 3D or Figs 4A to of Figs 5A and 5B of Fig 6 of the accompanying drawings, DATED this FIFTEENTH day of AUGUST 1990 Minnesota Mining and Manufacturing Company Patent Attorneys for the Applicant SPRUSON FERGUSON L/152h 22 L