|Publication number||US2589202 A|
|Publication date||Mar 11, 1952|
|Filing date||Aug 28, 1948|
|Priority date||Aug 28, 1948|
|Publication number||US 2589202 A, US 2589202A, US-A-2589202, US2589202 A, US2589202A|
|Inventors||Douglas A Newman|
|Original Assignee||Columbia Ribbon & Carbon|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (14), Classifications (10)|
|External Links: USPTO, USPTO Assignment, Espacenet|
H, 1952 D. A. NEWMAN 2985mm MANIFOLDING Filed Aug. 28, 1948 IIIIIIIIIIII INVENTOR. Dough; A. New mam BY mm gwxaaqaaqm MWM wi/ ATTORNEMS' Patented Mar. 11, 1952 MANIFOLDING Douglas A. Newman, Sea Cliff, N. Y., assignor to Columbia Ribbon and Carbon Manufacturing Company. Inc., Glen Cove, N. Y., a corporation of New York Application August 28, 1948, Serial No. 46,570
This invention relates to manifolding and particularly to an improved transfer or carbon strip for use in the manufacture of manifolding sets formed of record sheets or strips collated with one or more such carbon sheets or strips.
More particularly this invention relates to improvements in carbon sheets or strips of the general type in which the sheet or strip has a marginal portion which carries a normally inert or inactive adhesive, thus providin for attachment of itself to adiacent record sheets or strips by activating the adhesive.
When a carbon strip is prepared in this manner, and particularly when th re are t o opposite adhesive applications, a substantial diiierence in thickness exists between the carboniz d portion and the adhesive-carrying portion thereof and winding of the strip on a core to form a roll, as it leaves the coating machine for instance, is impractical because the hills and valleys form d on the roll by the uneven thickness cause the web to crinkle or break, or both.
It is an object of the invention, therefore, to produce a strip or web of transfer or carbon material having one or more adhesive applications, which strip or web is so constr cted that it can be readily wound to form a roll without damage to itself.
The type of adhesive to be used may generally be determined by practical considerations since the present invention may be carried out using a widevariety of materials. The only r striction is that the adhesive coating m st be rendered dry or inactive in the relatively short period of time reouired in a practical production process for the web to travel from the coating device to the collecting or winding station. This drying may be accomplished through proper choice of the adhesive and vehicle, by after-treatment of the adhesive coating, or by a combination thereof.
The present invention is based in part on the invention of my copending application. Serial Number 660,011, filed April 5, 1946, now United States Patent No. 2,503,680, issued April 11, 1950, and constitutes an improvement thereover. In my prior application, the problems raised by the thickness of adhesive applications on carbon paper are explored at length and the solution therein proposed consists primarily in the application of lines or spots of adhesive to nonoverlapping areas of the strip or web. These applications are disclosed as taking the form of pairs of parallel longitudinal bands of adhesive, one band of each pair being on the face opposite to the other pair and offset therefrom transversely of the strip or web, or the form of a series of staggered adhesive spots ofiset from each other both longitudinally and transversely.
I have found, however, that the complete 01T- setting of the adhesive applications, as disclosed in my said prior application is not in all cases essential and that a practical and windable structure may be achieved in many instances by a partial offsetting of the same with certain marked improvements in the manufacture and the eflicacy of the product resulting.
A carbon strip in accordance with my invention is provided with a coating of transfer material in the usual m nner, a portion of the stri usually marginal, ordinarily being free of said coating for the reception of adhesive. This marginal portion has thereon bands of dry, normally inactive adhesive material arranged in an undulating, zigzag, saw-tooth, or any other similar fashion. There are, of course, various tortuous or wavy forms which the adhesive bands may assume consist nt with the invention herein, and any one is believed to be the equivalent of the others. For the sake of simplicity the preferred or substantially sinusoidal form only is shown, but all similar forms are included and are comprehended in the term "sinuous which is used in this sense hereinafter. When both surfaces are provided with adhesive in this manner, the waves or undulations are so arranged as to be generally opposite to each other in the areas defined by their envelope lines, but out of phase with each other, with the result that a double thickness of adhesive occurs only in very small areas where the sinuous ba'nds cross.
By this procedure I am able to apply the adhesive material to the transfer strip using a continuous process which largely avoids the un- I certainty concerning the thickness of application which is apt to arise at the terminals of individual spaced applications in cases where the coating must be intermittently applied. The pattern which the adhesive assumes, being continuous and alternately offset in opposite directions, is likewise conducive to the production of a firmer manifolding pack than is the case where the elements of the pack must be held together by spaced adhesive applications, or by parallel continuous applications which are constantly offset in the same relative directions. I
Other objects and advantages will hereinafter appear.
In the drawing:
Figure 1 is a perspective view of a coated web of transfer material prior to slitting into strips and made in accordance with the present invention.
Fig. 2 is a perspective view of a roll of transfer material made in accordance with the present invention.
Fig. 3 is an enlarged section taken on line 33 of Fig. 1.
Fig. 4 is an enlarged fragmentary plan of a portion of a web showing a modified form of the invention.
Fig. 5 is an enlarged section taken on line 5-5 of Fig. 4.
Fig. 6 is an enlarged section similar to Fig. 5, but showing fragments of a pair of superposed convolutions of a web according to my invention.
Fig. '7 is an enlarged section similar to Fig. 6, but taken at a different location in a roll and showing four superposed convolutions; and
Fig. 8 is a perspective view of a manifoldin set employing carbon sheets made in accordance with the present invention.
In the manufacture of carbon paper it is convenient and economical to produce the same by passing a web having a width equal to the width of several carbon strips through a coating process, and to slit the same into separate strips thereafter. Such strips may then be collated with record strips to form continuous manifold sets, or may be chopped into sheets for collating with record sheets to ultimately produce individual sets. it is desired to collect either the web or strip, this step is most conveniently accomplished by winding the same upon a core to form a roll.
One embodiment of the present invention is shown in Fig. 1 in which a wide web II] of carbon paper is wound to form a roll. This web is of such width as to be capable of being split into a number of single strips II, shown here as three for the sake of simplicity. The major portion of the web is coated, usually on one side only, with a transfer or carbonizing composition I 2, while a plurality of stripes I3, one of which is usually marginal, are left without transfer or carbon coating for the reception of adhesive.
According to the preferred form of the present invention, these uncarbonized portions I3 have applied thereto on both faces thereof bands of adhesive material I4, which bands have a sinuous configuration, preferably substantially sinuoidal as shown. These bands of adhesive material may be and preferably are applied to the web simultaneously with the application of carbon coating I2, and their application may be effected by any suitable means. Preferably a pair of opposed rollers havin either raised or intaglio sinuous printing surfaces thereon are arranged to engage opposite faces of the web at portions I3 thereof. Suitable adhesive material is fed to the rollers and transferred by them to the Web in an operation similar to that of printing. The rollers will preferably be provided with interlinking means and their printing surfaces so related that the sinuous bands I 4 of adhesive material are out of phase with each other, and preferably, as shown in Figs. 1 and 2, they will be arranged to be in substantially opposite phase.
Such a double application of adhesive, when not disposed in accordance with my invention would normally make the strip portion I3 of the web with the adhesive thereon excessively thick so that winding thereof for the purpose of collecting the same after coating, or for storage purposes, would normally be rendered impractical due to the crinkling, tearing, or both which At any point in the process where would result from the uneven thickness across the web. My invention contemplates the arrangement of the adhesive bands in a sinuous configuration such as that shown in the drawing as a means for avoiding this difiiculty. With many adhesive materials presently in use it is feasible to apply to the web a layer of substantially the same order of thickness as the carbon coating but which is still of suitable thickness for proper functioning in its adhesive capacity. The difiiculty in winding, therefore, arises primarily from the two opposite layers often required which makes the adhesive carrying portions excessively thick. This situation can be readily visualized by an inspection of the sectional view of Fig. 3. If it were assumed that the bands I4 were coextensive and overlapping, the seriously excessive thickness which would be occasioned in the stripe portion I3 of the web can be readily appreciated. With my invention, however, the only overlapping portions causing a. double thickness of adhesive are in areas I5 where the bands intersect. As the web is wound upon itself to form a roll, the areas I5 will be found in most cases to nest within the open space provided between the bands I4. If there is any tendency whatever for the stripe portion I3 to increase in diameter more rapidly than the carbon coated portions due to the infrequent superpositioning of intersections I5, the same is so slow that its effect is imperceptible during the winding of rolls of any practical size.
The spacing of the intersections I5, or, in other words, the peak spacing 0r wave length of the sinuously configured bands I4, together with the width of said bands will depend upon the thickness of the adhesive coatings, the thickness of the base material of web Ill and the thickness of the coating I2 of carbon material carried by the web. Since these thicknesses vary over wide ranges in the manufacture of carbon paper, no
' practical formulae can be prescribed. Suffice it to say that the band width is sufficiently restricted and the peak spacing sufficiently great that the stripe portions I3 will pile up at substantially the same rate, when the web is wound onto a roll as the carbon coated portions of the web.
Fig. 2 illustrates an alternate form of my invention wherein a single width strip I I of carbon paper including a single stripe portion I3 is shown. This structure is the product resulting from the slitting of the web II] of Fig. 1. Such an article may, however, be produced in this form without passing through the initial multiple strip or wide web stage if desired.
A modified form of my invention is illustrated in Figs. 4 to 7, wherein is shown the arrangement of an adhesive band for a carbon web I0a having a single-face adhesive application in the form of band Ma. Under certain circumstances such an adhesive application may serve the purpose of the user or forms manufacturer better than the double application of Figs. 1 to 3. The nature of some adhesives, however, is such that the minimum operative thickness of the band I4a applied to stripe portion I3a is substantially in excess of the normal thickness of the carbon coating I2, and where this is the case, the application of the band Ma in a sinuous form will provide a structure which can be wound.
Fig. 5 is a cross section of such a web and illustrates roughly the relative thicknesses of the web and coatings which may, in certain instances, be encountered. Fig. 6 is a view similar to Fig. 5
but showing only a part of two superposed layers or convolutions. The purpose is to illustrate the manner in which sections of the adhesive bands I la nest so as to come within the radial thickness provided for them by the carbon coated portions of the web. Fig. '7 is a view similar to Fig. 6 but showing four superposed layers or convolutions and illustrating the arrangement and nesting of the layers which will occur at a location where the bands 14a of one pair of convolutions cross at Her, and where the bands Ma of a second pair of convolutions also cross in a position substantially axially aligned with and offset from the first crossing, as at lb.
From the foregoing description it can be seen that in a large percentage of the relative positions which the adhesive bands Ila of the various convolutions will assume, the nesting arrangement of the layers will prevent an increase in diameter of the stripe portion 13 of the roll as compared with the carbon coated portion thereof. Consequently, should any overlaps occur which lack compensation, these will be so infrequent that any tendency of the stripe portion |3a to increase in diameter over the carbon coated portion of the roll will proceed extremely slowly, and its effect in any roll having a useful and practical diameter would be imperceptible.
A manifolding set 2|], shown in Fig. 8 illustrates one use to which the carbon sheets and strips of the invention will normally be put. The set consists of alternate record sheets 2| and carbon sheets 22 bound together along the marginal portion 23, preferably by activation of a double adhesive application on the carbon sheets, such adhesive having been activated by heat, pressure, a solvent or softening agent, or by other suitable treatment'depending upon the type of adhesive used. The dimensions of the set of Fig. 8 indicates that it is intended for single manifolding use. A continuous manifolding set results when the dimension parallel to marginal portion 23 is extended in which case elements 2| would be considered record strips, usually provided with repeating forms therealong, and elements 22 would be considered carbon strips similar to the strips l I described above.
In the interests of clarity the expressions regular peak spacing" and equal peak spacing, used hereinafter are defined in the following manner:
Regular peak spacing-The undulating line, while it may have varying wave shapes or lengths, involves a substantially repeating pattern of constant length at least to the extent that the distance between any peak and its corresponding peak in the next group are always substantially equal to the spacing between the peaks of any other such corresponding pair and equal to the pattern or group length.
Equal peak spacing--The undulating line has a constantly repeating wave shape or length at least to the extent that the distance between adjacent peaks is always substantially the same.
Variations and modifications may be made within the scope of this invention and portions of the improvements may be used without others.
1. As a new article of manufacture a transfer medium for manifolding use comprising a web of fabric having a coating of transfer composition thereon, a longitudinally extending portion of said web being free of transfer material and carrying thereon an application of dry, normally inactive adhesive, said adhesive application having a continuous sinuous configuration of regular peak spacing whereby the web may be wound without damage to itself.
2. As a new article of manufacture a windable strip of transfer material having a transfer coating thereon, a longitudinally extending margin of said strip being free of said transfer coating, and a continuous sinuously disposed application of dry, normally inactive adhesive material extending along said margin, said application having a regular peak spacing.
3. As a new article of manufacture a windable strip of manifolding carbon paper having an uncarbom'zed marginal portion, and a, pair of longitudinally extending applications of dry, normally inactive adhesive material carried, one on each surface of said marginal portion, said adhesive applications having continuous sinuous configurations such that their peak spacings are equal and being so related in their relative longitudinal displacement that their overlapping portions are restricted in area and spaced along the strip.
4. A roll of transfer material comprising a web having the structure set out in claim 1, wherein the web is wound upon itself to form a cylindrical roll having substantially wrinkle-free convolutions throughout.
5. A roll of carbon paper comprising a strip having the structure set out in claim 3, wherein the strip is wound upon itself to form a cylindrical roll having wrinkle-free convolutions throughout.
6. As a new article of manufacture, a transfer medium for manifolding use comprising a web of fabric having a coating of transfer composition thereon, a longitudinally extending portion of said web being free of transfer material and carrying thereon an application of dry, normally inactive adhesive, said adhesive application having a continuous, substantially sinusoidal configuration whereby the web may be wound without damage to itself.
7. As a new article of manufacture, a sheet of transfer material obtainable by cutting from a roll of wound strip, comprising a sheet of flexible fabric having a transfer coating thereon, one margin of said sheet being free of said transfer coating and carrying thereon an application of dry, normally inactive adhesive extending alon said margin, said adhesive application having a continuous sinuous configuration of regular peak spacing.
8. As a new article of manufacture, a sheet of manifolding carbon paper obtainable by cutting from a roll of wound strip, comprising a sheet of flexible fabric having a carbon coating thereon, one margin of said sheet being uncarbonized and having on its opposite surfaces applications of dry normally inactive adhesive extending along said margin, said adhesive applications each having a continuous sinuous configuration of regular peak spacing, said applications being so positioned on the surfaces of said margin as to be out of register and with overlapping portions of restricted area only spaced along the margin.
9. The article of manufacture as set forth in claim '7 wherein the adhesive application has equal peak spacings.
10. The article of manufacture as set forth in claim 7, wherein the adhesive application is substantially sinusoidal.
11. The article of manufacture as set forth in claim 8 wherein the adhesive applications have equal peak spacings.
12. The article of manufacture as set forth in claim 8 wherein the adhesive applications are Number substantially sinusoidal. 2,260,602 DOUGLAS A. NEWMAN. 2,503,680
REFERENCES CITED r Number The following references are of record in the 356 365 file of this patent: 1
UNITED STATES PATENTS Name Date Brenn Oct. 28, 1941 Newman Apr. 11, 1950 FOREIGN PATENTS Country Date Great Britain Sept. 10, 1931 Great Britain Oct. 1, 1931
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|US20040154265 *||Feb 2, 2004||Aug 12, 2004||Carlisle Management Company||Method of winding two overlapped sheets with preapplied seam tape|
|US20040185218 *||Jan 27, 2004||Sep 23, 2004||Carlisle Management Company||Method of winding sheeting with filler strips|
|US20040187432 *||Jan 28, 2004||Sep 30, 2004||Carlisle Management Company||Method of rolling folded membrane sheeting with preapplied seam tape|
|US20040188008 *||Jan 28, 2004||Sep 30, 2004||Carlisle Management Company||Method of applying seam tape to the edge of a membrane|
|U.S. Classification||462/39, 428/343, 206/389, 428/906, 428/194, 156/305|
|Cooperative Classification||Y10S428/906, B41M5/10|