US3532572A

US3532572A - Method and apparatus for winding continuous webs and adhesively securing the tail end

Info

Publication number: US3532572A
Application number: US532651A
Authority: US
Inventors: Walter H Herman
Original assignee: Scott Paper Co
Current assignee: Kimberly Clark Tissue Co
Priority date: 1966-03-08
Filing date: 1966-03-08
Publication date: 1970-10-06
Anticipated expiration: 1987-10-06

Description

Oct. 6, 1970 w. H. HERMAN 3,532,572

METHOD"AND APPAR 5 FOR WINDING C INUOUS WEBS AND ADHESI Y SECURING THE L END 2 Sheets-Sheet 1 Filed March 8. 1966 INVENTOR. WALTER HERMAN ATTORNEY Oct. 6, 1970 w. H. HERMAN 3,532,572

METHOD AND APPARATUS FOR WINDING CONTINUQUS WEBS AND ADHESIVELY SECURING THE TAIL END Filed March 8, 1966 2 SheetsSheet 2 INVENTOR. WALTER HERMAN ATTORNEY United States Patent US. Cl. 156187 13 Claims ABSTRACT OF THE DISCLOSURE A method and apparatus for applying adhesive along a transverse bonding line of a continuous web being wound, wherein the adhesive is applied to a lifted and supported transverse segment of the web overlying a support roll, which method and apparatus are useful in web winding apparatus for effecting securement of the tail end of the web to the wound web roll.

This invention relates to the art of winding webs and, more particularly, to a new and improved method and apparatus for securing the tail of a web to a Wound web roll formed by a web winding machine.

The objective of the invention is to provide improvements in the art of forming roll products, such as toilet tissue and roll toweling, which are often placed in transparent wrappers through which sloppy or ineffective securement of the tail of the web to the roll is readily apparent to the customer.

There as been a problem in the past with winding mechines, both of a continuous and intermittent type, of providing means for securing the tail of a web to the product roll formed in the winding machine. The above problem has become increasingly acute with the advent of the modern high speed winders which make even more critical the physical operations performed on the tail of the web and the roll in order to effect tail securing or, as commonly referred to, tail tying.

One of the most rudimentary methods of tail tying involves the application of adhesive to a portion of the tail end of the web in order to secure the tail end to the roll. A variety of systems have been advanced, and methods and means have been previously employed to apply adhesive to the web in a predetermined area near the tail end for this purpose. These generally have been ineffective or grossly inaccurate at high speed, resulting often in the tail being tied but leaving a sur lus of adhesive on a roll or a loosely flapping end extending from the roll from the point where the tail is secured to the roll. This loosely fastened or unsecured end results from inaccurate placement of the adhesive on the web.

In view of the difiiculties and shortcomings of the prior art, it is the principle objective of the invention to provide a new and improved method and apparatus for accurately and reliably securing the tail of a web to a wound product roll.

It is a further object and advantage of the invention to provide a method and apparatus for tying tails in a continuous high speed winding operation.

It is a still further object and advantage of the invention to provide a method and apparatus for applying adhesive in a high speed winding operation to predetermined portions of a web.

It is an additional object and advantage of the invention to provide a new and improved method and apparatus for applying metered amounts of adhesive to successive transverse areas of a moving Web.

p we

The above objects and advantages are accomplished in accordance with the invention by substantially simultaneously lifting and supporting a transverse segment of a substantially continuous advancing flexible web fed in partial wrapping engagement over a rotating support roll to one of a plurality of mandrels above the surface of the support roll while transferring a metered amount of adhesive from an adhesive reservoir to the transverse segment. The adhesive is applied during rotation of the bed roll while the web is lifted and supported and along a bonding line on a portion of the surface of the web extending transversely across the web. Immediately before or during winding of the transverse segment of the web containing the metered amount of adhesive onto the roll, the web is severed along a transverse line of severance to form a tail end.

The line of severance is substantially parallel to the bonding line and, in one instance, is shaped toward the tail end of the web from the bonding line by a varying distance depending upon the particular arrangement of winding equipment. Thus, where the surface of the web to which adhesive is applied will be directed toward the exterior of the wound roll, when that portion of the web is wound, severance is performed along a transverse line spaced toward the tail end of the web by a distance up to about 2 inches. However, where the surface of the web to which adhesive is applied will be directed toward the interior of the wound roll, when that portion of the web is wound, severance is performed along a transverse line spaced toward the tail end of the web from the bonding line by a distance slightly greater than one circumference of the wound roll.

Upon further winding of the tail end upon the roll, the tail end is pressed into contact with the exterior of the wound roll and with the adhesive containing portion previously wrapped thereon to effect securement of the tail end to the wound roll. In one embodiment, the adhesive may be transferred directly to the raised elongate portion on the surface of the support roll while, in another embodiment, the metered amount of adhesive may be transferred from the glue metering means to the raised elongate portion on the support roll surface by means of an independent transfer means.

An important feature of the invention is the method and apparatus employed to accurately transfer the adhesive to the web at a predetermined area and at a predetermined time which has heretofore been difficult or impossible to attain. By employing a raised portion extending transversely across the rotating support roll, which raised portion is arranged to lift and support a transverse segment of the web fed over the support roll which transverse segment includes a predetermined area of the web, reliable application of adhesive to the desired area of the web is accomplished. Thus, means are provided to apply a predetermined amount of adhesive to the desired areas on the lifted and supported segment of the Web and the raised portion serves to move the predetermined portion of the web, i.e., the transverse segment, into a position at the desired time to receive adhesive in the intended areas.

After lifting the transverse segment of the web above the surface of the bed roll, the raised elongate portion serves as a ready means to press the desired portion of the web into contact with adhesive from an adjacent dispenser or means such as from a similar raised elongate portion or protuberance having a metered amount of adhesive on its outermost extremities extending toward and disposed in interference with the elevated transverse segment of the web on the support roll during a part of its movement path. In accordance with the invention, this latter protuberance can be arranged through various means as described subsequently to advance toward and away from the position of interference with the lifted and supported transverse segment of the Web on the support roll so as to transfer adhesive to the Web only at the de sired times. When no adhesive has been transferred to the raised segment of the Web, the raised elongate portion on the support roll merely rides beneath the web, cyclically lifting and supporting segments of the web Without having adhesive transferred and otherwise having no adverse effects on the normal winding process.

Advantageously, the raised portion on the support roll provides a means to effect adhesive application to one surface of a moving web prior to cut-off of the web. This is an area. in the web winding process which is difficult to work in under normal arrangements due to the rapid movement of the web and the limited area of support afforded by the support roll. Application of adhesive after cutoff is obviously difficult and, in most cases, impractical. The raised portion on the bed roll effects adhesive application at a position where the web is relatively taut, and, by itself, tends to slightly increase the web tension momentarily since it momentarily lifts and supports a transverse segment of the web, at least to portions of which adhesive is to be applied, above the level of the support roll surface. By the above arrangement, the invention provides a new and improved means for accurately effecting application of adhesive or other liquids to precisely defined areas of a moving web surface, which areas are arranged at predetermined intervals.

Additional objects and advantages of the invention will become apparent from the following detailed description of a preferred embodiment thereof, when read with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of a typical product roll formed in accordance with the invention;

FIG. 2 is an elevation view of one type of glue metering and dispensing device employed in the invention,

FIG. 3 is a sectional view taken along line 33 of FIG. 2,

FIG. 4 is a sectional view taken along line 33 of FIG. 2 illustrating another type of doctor blade used with the device of FIG. 2,

FIG. 5 is a diagrammatic side elevation view of apparatus arranged to secure the tail of a web to a wound roll,

FIG. 6 is an elevation view of a portion of the apparatus shown in FIG. 5 illustrating the position of various elements at a later stage of the method of applying adhesive to the web and securing a tail end to a wound roll, and

FIG. 7 is a diagrammatic elevation view of apparatus for tying tails on a continuous winding machine in which the mandrels rotate in a direction opposite to those of FIG. 5.

Referring now to FIGS. 2 and 3 of the drawings, there is shown a housing means 10 having walls which define an elongated channel or chamber 11 and having an elongated opening within which is longitudinally disposed a metering mandrel 12. Metering mandrel 12 is substantially cylindrical in form and is rotatably mounted and carried by hearing means 13 supporting each end and afiixed in end walls 14 of housing means 10. The bearing means 13 also are adapted to seal the interior of the chamber 11 from the atmosphere. Metering mandrel 12 has a plurality of surface depressions 16 spaced apart along its length in aligned relationship along one point on its periphery.

The surface depressions Shown in FIGS. 2 and 3 are rectangular areas formed by fiat planes cut into the metering surface of metering mandrel 12 at spaced intervals and parallel to the axis of mandrel 12. The resulting mandrel 12 is a cylinder having a plurality of geometric segments removed at spaced intervals along its depth. Obviously, a large variety of surface depressions 16 could be formed in metering mandrel 12. Such surface depressions may be of a substantially different shape, size, and nature other than the flats shown. The surface depressions may, in certain instances, be interconnected to form one continuous surface depression along the length of metering mandrel 12 and might be located at one or more angular positions upon the periphery of metering mandrel 12 in order to sequentially transfer an adhesive or other viscous liquid to different areas.

Two doctor blades, 17 and 18, are longitudinally disposed in spaced apart relation to each other on either side of the elongate opening in housing means 10 and sealingly contact the surface of metering mandrel 12.

Doctor blades

17 and 18 may be secured to housing means 10 by a series of bolts 19 thereby forming a tight seal with the walls of housing means 10 flanking the exposed portion of metering mandrel 12. Metering mandrel 12 is positioned within the chamber 11 so that the major portion of it rotates within the interior of the housing means in chamber 11 but a minor elongate portion of its cylindrical metering surface is exposed to the exterior between the free extending and contacting edges of

doctor blades

17 and 18 which are spaced apar from each other along either side of the elongate opening to the chamber 11 as de scribed above.

The chamber 11 is filled with a viscous liquid such as glue or adhesive and upon rotation of metering mandrel 12, either by hand or by a suitable mechanical rotational indexing device, the surface depressions 16 in the cylindrical surface of metering mandrel 12 are contacted by the glue or adhesive. During one revolution of mandrel 12, the entire cylindrical surface of metering mandrel 12 is moved past one of

doctor blades

17 or 18 to remove substantialy all of the adhesive from the cylindrical surface of the metering mandrel 12 but leaving a fixed predetermined amount on the surface depressions 16. The opposite doctor blade serves to clean the surface of the metering mandrel prior to its passage into the supply chamber again to prevent contamination of the adhesive therein and also serves to provide a moving seal against the metering surface of the rotating mandrel to prevent leakage of the adhesive from housing means 10. In accordance with the invention, the fixed amount of adhesive may be removed from surface depressions 16 by application directly to a surface or by an associated transfer means to be subsequently described.

The

doctor blades

17 and 18 shown in FIG. 3 are of a fixed shape and constructed in a stiff manner so as to ride in sealing contact upon that portion of the metering surface of the metering mandrel 12 which has a curvilinear configuration which, in some instances, as in the embodiment shown, is cylindrical. The mandrel-contacting edges of the doctor blades of this type do not necessarily exert a great amount of pressure against the mandrel to form a seal and therefore have little tendency or ability to move inwardly against the bottom of the surface depressions during rotation if curvilinear supporting areas are not left between surface depressions, as where the mandrel 12 has one continuous surface depression along its length.

FIG. 4 illustrates a modified form of

doctor blades

17 and 18 which may be advantageously employed in the metering and dispensing device employed with the invention. As shown in FIG. 4, doctoring

blades

17 and 18, which are preferably made of a plastic or a resilient metal such as spring steel, are bolted to the front of the housing means 10 in the manner similar to that described in FIG. 3. Their elongate edges, which extend inwardly of the elongate opening in the housing 10, bear against the metering surface of the mandrel 12 in a somewhat tangential manner. Thus, the edges continuously ride in sealing contact with the curvilinear or cylindrical portion of the metering surface of the mandrel 12 and leave a precise predetermined amount of adhesive upon the metering surface of the mandrel within its surface depressions when they are exposed to the exterior during rotation thereof.

With this latter flexible, resilient type of doctor blade, it is desirable to have a plurality of surface depressions spaced along the length of the mandrel so as to be separated by a plurality of interspersed curvilinear or cylindrical blade supporting portions of the metering surface. This provides a plurality of bearing surfaces which serve to support the doctor blades and prevent undue bending of the blades and contact of the blades with the bottom of the surface depressions.

In some instances, it is desirable to dispense, with a device of this type, glue which is relatively fast drying or which contains volatile ingredients and is susceptible to damage upon prolonged exposure to air. It is also desirable in some instances to continuously circulate adhesive through a heating means in order to maintain it at the desired viscosity for metered use. As shown in FIGS. 2 and 3, adhesive may be circulated through the chamber 11 within housing means by feeding it into chamber 11 through one or more inlets on housing means 10 and withdrawing it from chamber 11 through one or more outlets 21 on housing means 10. In this manner, a heater (not shown) and/or a pump (not shown) may precede inlet 20 and be arranged to circulate adhesive from a remote supply reservoir (not shown) through the housing means 10 in a continuous manner thereby insuring at all times a fresh supply of such adhesive having the desired properties.

Referring now to FIG. 5, a web 24 is fed under a guide roll 25 and over a rotatably mounted support roll 26 and is arranged in partial wrapping engagement thereon. The forward end of the web 24 is then fed toward a core carried on one of a plurality of mandrels 27 which are rotatably carried on the turret 28 of a continuous automatic rewinder (schematically shown). The web 24 is drawn from a parent or mill roll (not shown) and the arrangement of apparatus illustrated is employed for the purpose of successively forming a plurality of smaller product rolls from the single large parent roll. In some embodiments, it would be possible for a web to be fed from a papermaking machine directly into such an arrangement of winding equipment.

The support roll 26 is generally cylindrical and has a raised elongate portion or protuberance 30 extending transversely across and projecting outwardly from the surface of roll 26 and from one end to the other. Portion or protuberance 30 is secured to the surface of roll 26 by an adhesive although recessed fasteners would also be satisfactory for this purpose. It is also contemplated that the raised protuberance 30 could be mounted for movement into and out of the support roll 26 at predetermined times. The particular height and shape of the protuberance are not critical, so long as it is sufficiently wide to lift and support the area of the web to which adhesive is to be applied and it is sufficiently high to raise a web carried thereon above the surface of roll 26 so as to avoid application of adhesive to roll 26 or underside areas of web 24. In this regard, it has been found that a raised portion 30 of resilient material such as rubber extending about inch above the surface of the roll 26 and having a width of about A inch to /2 inch and being slightly rounded on the outermost edges is very satisfactory in achieving transfer of a metered amount of adhesive to the web in a manner to be described for the winding of web rolls, such as rolls of toilet tissue.

A glue metering and dispensing device 32 similar to that shown in FIGS. 2 and 3 is positioned in the vicinity of the surface of support roll 26 and slightly spaced therefrom. It is located in a position facing the area of portion of the surface of the support roll 26 which is contacted or momentarily wrapped by the web. The metering mandrel 33 of device 32 has the exposed portion of its metering surface directed toward the surface of web 24.

A glue transfer means, indicated generally by reference numeral 35, is disposed between the glue metering device 32 and the surface of web 24. Although many types of transfer means could be employed, the embodiment shown comprises a rotatably mounted cylinder 36 having an elongate raised portion or protuberance 37 secured to the surface thereof by adhesive. Raised portion is similar in design to raised portion 30 and lies generally parallel thereto. The diameter and position of transfer means 35 are such that, upon rotation of cylinder 36, the raised portion 37 carried thereon is moved through a position of interference with the exposed metering surface of the metering mandrel of device 32. In this manner, it is arranged to wipe off or pick up a predetermined amount of adhesive with the raised portion 37 and transfer it to a desired point.

The transfer means 35 is positioned relative to the surface of support'roll 26 and the portion of web 24 carried thereon so that, upon further rotation, the protuberance or raised portion 37 on its surface moves through a position of interference with the transverse segment of the web 24 lifted and supported by the protuberance or raised portion 30 carried on the surface of roll 26 as roll 26 rotates carrying the web 24. Coincidence and contact of the segment of the web 24 supported on raised portion 30 with raised portion 37 effect a transfer of the metered amount of adhesive from transfer means 35 to desired portions of web 24 supported on raised portion 30 on roll 26.

The independent transfer means 35 between the glue metering device 32 and the protuberance 30 on the support roll 26 could be eliminated and, alternatively, means could be operably attached to the glue metering device 32 to advance its exposed metering surface toward and away from a position of interference with the web 24 supported on protuberance 30 on the support roll 26 at a predetermined time. It will also be readily apparent that in certain instances and with certain embodiments of glue metering apparatus, no transfer means of actuation means would need to be employed and the glue metering device itself could advance a predetermined amount of glue into a position of interference with the web 24 supported on protuberance 30 on a support roll 26.

An important feature of the invention is the manner in which adhesive is transferred to the predetermined area of portions of a lifted and supported transverse segment of web 24. As support roll 26 rotates, raised portion 30 cyclically lifts and supports above the surface of roll 26 successive transverse segments of web 24. It is important that all areas of web 24 to which adhesive is to be applied be contained within these segments. In this regard, in some instances it may be desirable to have more than one raised portion 30, offset on the periphery of roll 26 where the distances between desired areas of adhesive application are not integral multiples of the circumference of roll 26. In any event, after the contact of one surface of the web 24 with the raised portion 30, and the lifting and supporting of the desired segment above the surface of the roll, the adhesive is transferred to the raised transverse segment of web 24 by means of transfer means 35. At other times, transfer means 35 is idle and web 24 receives no adhesive even though it is still cyclically lifted and supported during rotation of support roll 26.

The feature of lifting and supporting transverse segments of the web 2.4 during periods of adhesive application is important in that it prevents adhesive from smearing onto undesired areas of the web 24 adjacent the predetermined areas of application. It also effects contact of the adhesive with desired portions of web 24 by moving these portions outwardly to a point where they will contact the glue applicator while insuring that the remaining portions of the web will be untouched. The precise position of web 24 during adhesive application and the manner in which adhesive transfer is accomplished is shown more clearly in FIG. 6.

The position of a line of adhesive application on a web 24 with regard to the problem of securing the tail of a web to a wound product roll is another important feature of this invention. In the embodiment shown in FIG. 5, adhesive is preferably applied to the web 24 at a point which is a distance of up to about 2 inches in fornt of the point where the Web will be severed. More precisely, the adhesive should be located a distance of up to about 2 inches in front of the proposed line of severance forming the tail end of the web. This feature of the invention is achieved by the location of a severing means 29 arranged to operate and sever the web 24 at a point following adhesive transfer to the web at precisely that distance. The slight variation in the above range is inherently necessary since the circumference of each wound roll formed will be slightly different from that of the previous roll. However, this variation will consistently fall within the above limits and, in normal operation, can be programmed within a much narrower range so that a loose tail portion remaining after the adherence of the tail to the roll can be maintained at less than /2 inch in normal operation.

The cutting means or knife 29 is carried internally of the support roll 26 and, upon signal from the winding equipment and through a sliding cam mechanism as is well known in the art and disclosed in US. Pat. No. 2,769,600, is advanced radially outward to project a cutting edge suffieiently beyond the surface of the support roll 26 to sever a web carried thereon. Other types of severing means could also be employed such as a chopper roll operating in conjunction with a slot in the surface of a bed roll, as is shown in US. Pat. No. 3,179,348, and as is well known in the art.

Important features illustrated by the above apparatus and method are the use of a protuberance 30 on a support roll 26 to apply adhesive to the web and the use of severing means arranged to operate a distance of up to about 2 inches behind the area where the adhesive is applied to the web. It is these features which primarily enable the reliable and accurate securement of tails of webs to wound web rolls on a continuous winder operating at high speed.

After severance of web 24, the tail end proceeds toward the roll 39 carried on mandrel 27, being pulled toward it by the inertia of rotation of roll 39. In the embodiment shown in FIG. 5, the tail end having the adhesive applied to the inward facing or interior-directed surface will come in contact with a portion of web 24 which was previously wound. It has been found desirable to apply a slight pressure to the outside of roll 39 to press the tail end into contact with the previously wound web to cause the adhesive to fully contact the web and insure smooth contact. One means for doing this is shown in FIG. 5, and comprises a plurality of pivotably mounted wiping fingers 40 biased into pressure contact with the outside surface of roll 39 by means of a compressed spring 41.

One typical product roll 39 of the type formed by the invention and sold to consumers is shown in FIG. 1. The roll comprises generally a core 42 about which is wound a paper web, the end of which is adhered to the exterior of the wound roll by areas 43 of adhesive application arranged in an intermittent line transversely across the web on the roll.

FIG. 7 is a diagrammatic view of apparatus similar to that shown in FIG. 5 but illustrates the location of protuberance means on the bed roll relative to be severance means carried by the bed roll when the direction of rotation of mandrels on the continuous winder supporting turret is in the opposite direction from that shown in FIG. 5. The mandrels in this instance are indexed into position for winding in the same direction by the winding turret but, as shown in FIG. 7, are driven in rotation in a clockwise direction as distinguished by the counterclockwise direction employed in FIG. 5. In this instance, the adhesive must be applied some distance in front of the line of severance and, therefore, is preferably up to 8 about 2 inches greater than one circumference of the nearly completed wound roll in front of the proposed tail end of the web where severance will occur.

What we claim is:

1. In a winding process wherein a plurality of web rolls are successively wound on mandrels from a substantially continuously advancing flexible web and in partial wrapping engagement over a rotating support roll to one of said mandrels, a method of securing the tail end of the web to the wound roll which comprises simultaneously lifting and supporting radially outward of the surface of said support roll a transverse segment of said web overlying said support roll while transferring a metered amount of adhesive from an adhesive reservoir to said transverse segment along a bonding line on a portion of the surface of the web which has not contacted the support roll and is directed toward the interior of the wound roll when that portion of the Web is wound, severing the web along a transverse line of severance to form a tail end, said line of severance being substantially parallel to said bonding line and spaced from said bonding line toward the tail end of said web by a distance of up to about 2 inches, winding said transverse segment on said roll, and pressing said tail end of said web with the adhesive positioned thereon into contact with the exterior of said wound roll to effect securement of said tail end to said wound roll.

2. A method according to claim 1, wherein said adhesive is applied along a bonding line on a portion of the surface of a transverse segment of the web which has not contacted the support roll and is directed toward the exterior of the wound roll when that portion of the Web is wound, and wherein said line of severance is spaced toward the tail end of said web from said bonding line by a distance slightly greater than one circumference of said wound roll.

3. A method according to claim 2, wherein said metered amount of adhesive is applied to intermittent areas along said bonding line.

4. A method according to claim 1, wherein said metered amount of adhesive is applied to intermittent areas along said bonding line.

5. A method of applying metered amounts of adhesive to successive transverse areas on one surface of a moving web, comprising supporting a moving Web in partial wrapping engagement upon the surface of a rotating support roll, lifting and supporting successive elongate transverse segments of said web radially outward of the surface of said support roll, and applying a metered amount of adhesive to at least portions of the area contained within at least some of said successive elongate transverse segments on a surface thereof directed away from said support roll when they are supported radially outward of the surface of said support roll.

6. In web winding apparatus, a mandrel on which a web is wound, a rotatably mounted support roll over which the web is fed in partial wrapping engagement to said mandrel, said support roll undergoing one revolution during the feeding of a predetermined length of Web which is greater than the circumference of the final wound web roll, means to cyclically lift and support radially outward of the surface of said support roll a transverse segment of said web, means for applying adhesive to at least a portion of said transverse segment of said web overlying said support roll along a transverse bonding line on a portion of the surface of the web which has not contacted the support roll and is directed toward the interior of the wound web roll when that portion of the web is wound, means to sever the web to form a tail end, said means being adapted to sever said web along a line substantially parallel to said bonding line and spaced from said bonding line toward the tail end of said web by a distance of from about inch to about 2 inches, and means to press the tail end of said web with said adhesive positioned thereon into con tact with the exterior of said wound roll to effect securement of said tail end to said wound roll.

7. The combination in web winding apparatus according to claim 5, wherein said means for intermittently applying adhesive to an elongated portion of said transverse segment of the web is arranged so that adhesive is transferred to said web along a transverse bonding line on a portion of the surface of said web which has not contacted the support roll and is directed toward the exterior of the wound web roll when that portion of the web is wound, and said means to sever are adapted to sever said web along a line spaced from said bonding line toward the tail end of said web by a distance slightly greater than one circumference of said wound roll.

8. The combination of web winding apparatus according to claim 6, wherein said means to cyclically lift and support comprise a raised strip across the surface of said bed roll which is substantially parallel to the axis of said support roll and has a plurality of raised portions separated by depressions.

9. The combination in web Winding apparatus according to claim 5, wherein said means to cyclically lift and support comprise a raised strip across the surface of said bed roll which is substantially parallel to the axis of said support roll and has a plurality of raised portions separated by depressions.

10. Apparatus for applying a metered amount of adhesive to one surface of a moving web, comprising a rotatable support roll adapted to receive and support a substantially continuously advancing flexible web in partial wrapping engagement thereon, said roll having at least one raised elongate portion transversely disposed thereon and projecting outwardly from the surface of said rolls, said raised portion being adapted to cyclically lift and support successive elongated transverse segments of said web above the surface of said roll, and adhesive applying means adapted to transfer a metered amount of adhesive to at least portions of the area contained within said elongate transverse segments on a surface thereof directed away from said support roll when they are supported above the surface of said support roll.

11. Apparatus according to claim 10, wherein said roll has one raised elongated portion which is transversely disposed across said roll in a direction substantially parallel to the axis of said roll.

12. Apparatus according to claim 11, wherein said raised elongate portion is a plurality of spaced apart successively-aligned raised portions separated by depressions so that said metered amount of adhesive is applied to the surface of said web in an intermittent line extending transversely across the web.

13. Apparatus according to claim 10, wherein said adhesive applying means comprise an adhesive metering and dispensing device adapted to separate a metered amount of adhesive from an adhesive supply reservoir and transfer means adapted to transfer said metered amount of adhesive from said metering and dispensing device to said web.

References Cited UNITED STATES PATENTS 2,507,144 5/ 1950 Christman 24256.6 2,512,900 6/ 1950 Kwitek 24256.6 3,134,553 5/1964 DeGelleke 24256.6 XR 3,172,612 3/1965 Besserdich 156-184 XR 3,369,766 2/1968 Herman 24256 3,393,105 7/1968 Tellier l56187 3,128,057 4/1964 Barnhart et a1 24256 3,179,348 4/1965 Nystrand et al 242--56 3,342,434 9/1967 Conrad 24256 XR JOHN T. GOOLKASIAN, Primary Examiner G. W. MOXON, Assistant Examiner US. Cl. X.R.