US2276997A - Carton making apparatus - Google Patents

Description

March 17, 1942. R. R. RICHARDSON 2,275,997

. CARTON MAKIVNGAPPARATUS I lFilecrsept. 2o, 1939 s sheets-,sheen ADHESIVE LACQUER Mam i?, @42

R; R. RICHARDSON CARTON MAKING APPARATUS Filed sept. 2o, 1959 I 3 Sheets--Sheei'l 2k l March 17,A 1942. R. R.v RICHARDSON 2,276,997

CARTON MAKING APPARATUS I Filed Sept. 20, 1939 3 Sheets-Sheet 3 Patented Mar. 17, 19424 Ralph R. Richardson, Chicago.

'United Biscuit Company or m., here enga, @meagoy This invention has for one of its objects the provision of means for facilitating the produc--YY tion of a carton-forming blank having a face, or predetermined portions thereof, coated with impervious or other nishing material, or adhesive for employment in maintaining the blank permanently folded, either vset up in carton form or in collapsed form from which it may be readily adjusted to set-up form. The invention is furthermore concerned with the provision oi a carton structure and the method and apparatus for making the same and in which a finishing coating, and adhesive material for'the purpose indicated, may be applied to the same face of the carton-forming blank in such a manner that when the blank is folded to carton form the entire inside or outside of the carton will be lined or coated with the impervious or other coating material.

It is also an object of the invention to provide a method and apparatus whereby two or more kinds of coating materials may be applied to a carton blank in successive operations, the succeeding 'coating being applied while the preceding coatings remain wet; to provide such an arrangement in which the depthor thickness and also the area of thecoating may be effectively controlled; to provide means whereby two or more coatings may be successively applied but simultaneously dried; and in general, it is the object of the invention to provide an improved carton and an improved method and apparatus for making the carton.

Other objects and advantages of the invention will be understood by reference to the following specification and accompanying drawings (3 sheets) wherein there is illustrated a carton and the method andv apparatus herein contemplated for producing the carton.

In the drawings:

Figure 1 is a diagrammatic illustration showing the general scheme for applying two wet coatings to a web of carton stock and the arcoating'material, the relationship of Figures 4' and 5 to each other being indicated by the lines designated d-d and 5 5 on Figures 5 and-4, respectively;

Figures 6 and 7 are front and end views, respectively, of another roll set for applying another form or coating material to the web, the relationship of Figures '6 and 7 to each other being respectively indicated by the lines designated 5 8 and i--i, respectively, on Figures 7 and 6; and

Figures d and 9 typify sections, respectively, on lines and -Q ofFigures 5 and 7, respectively.

Referring now to larly to Figure l, a paper web designated I0 of suitable carton stock is directed around guide rollers il and li ,and through roll sets or devices rangement for simultaneously drying such coatings;

Figure 2 is a plan illustrating the form in which the two coating materials are applied to the web of material for the production of a carton blank selected for purpose of illustration in this application;

Figure 3 is a plan of a carton blank which is selected for the purposes of illustration inthis application; a

Figures 4 and 5 are front and end views, respectively, of a roll set for applying one kind of respectively indicated at i3 and lil for successively applying lacquer and adhesive or other prededetermined coatings to predetermined areas of the underside of the web le of the carton stock as it passes through said devices. The web with its wet coating on its under surface is then guided around another guide roll l5 and carried upwardly and over a guide roll id, thence through a suitable drying and conditioning oven Il from which the web travels to apparatus for performing other desired operations on the web. y

The drying and conditioning equipment above referred to should be understood as merely typifying any suitable equipment for the purpose indlcated'. It may consist of only a drying section such as represented by the upper sectioni9 of the oven, or it may comprise'or include a moistening or conditioning section represented by the lower section 20.

It will be understood that it is here contemplated, ior illustrative purposes only, that the coating materials applied by the devices indicated at I3 and it will be applied to one side of the web and that printing or other matter will be applied to the opposite side, which in the iinished carton will be the outside thereof. Obviously, however, the method and apparatus illustrated may be employed with advantage in applying coatings to the carton stock in otherrelation-v ships.

As shown in Figure 3, the blank prepared by the method and apparatus herein disclosed is of generally rectangular form and it is scored or creased to provide panels and flaps adapted to be folded to form a rectangular carton. The blank as shown in Figure 3 is provided with crease or fold lines designated 2l represented by i the drawings 'and particufolded to carton form. There are also formedend panels 21 and 28 which are adapted to be folded upwardly relative to the bottom panel 23 to form end walls for the container. Flaps designated 29 and 30 extend from the end wall panels 21 and 28, respectively, and are adapted to be folded inwardly over the top of the contents of the package or, if preferred, folded to overlap the inside of the respective end walls. The end walls 21 and `28 are respectively connected to the side walls 24 and 25 by means of corner portions each of which is designated 3l and each of which is` suitably slltted and creased to permit folding of such corner portion either inwardly or outwardly ofthe end wall in a manner well known in the art. 'I'he top panel 22 is also provided with end extensions 32 and 33, which are adapted to be folded downwardly to overlap end walls 21 and 28 when the carton is formed.

The carton blank shown in Figure 3 may, for purposes of illustration, be considered as having been designed for containing a food product or the like which deteriorates upon exposure to the air. To impart to the carton the vability vto preserve its content against such deterioration, it is preferably coated with an impervious lining material which in this instance may be a lacquer coating. Lacquer dries quickly and forms a smooth, non-sticky, non-soluble, but flexible coating, which permits folding of the blank without cracking the coating. The entire inside face of the blank, except the corner portions 3l, is preferably coated with such impervious lining forming material, so that when the blank is folded to carton form the carton will have its The crease lines divide the 3| as shown in Figure 3. Thereafter the stock with its wet lacquer and vadhesive coatings is conducted through the dryer and from thence to suitable cutting mechanism which creases and cuts out carton blanks in the form shown in Figure 3. It will be understood, however, that if desired the web may be subjected to printing or lithographing on the opposite side of the web, either before or after, if preferred, the web may be subjected to certain scoring and cutting operatlons before the application of any coatings thereto.

Referring now particularly to Figures 4 and 5,'

the lacquer coating is applied by means of a roll set or device comprising a platen roll 36 and an applicator roll 31. The latter has its 'cylindrical surface engraved with a suitable intaglio design which corresponds to the area to be coated with lacquer as illustrated in Figure 2. As shown, the engraved area is represented by stippling, small end areas designated 38 being left smooth and unengraved. The rolls 36 and 31 are suitably mounted for rotation and the roll 31 has associated with it a pan 39 carrying a supply of lacquer through which the roll rotates. In its rotation, the roll picks up a coating of the lacquer which iills the engraved design on the surface of the roll. A doctor blade 40 is provided entire inside `surface lined. with the impervious coating. The lacquer coating -is indicated in Figure 3 (and also in Figure 2,) by stippling. For the purpose of maintaining the blank in its folded condition, the corner portions 3| are coated with adhesive as indicated by the shading covering such corner portions (both in Figures 2 and 3). In folding the blank, the corner portions are preferably caused to overlap on the outside of the end wall 21, the said portions being folded upon themselves along diagonal fold lines indicated, so that their adhesively coated surfaces contact each other to securely maintain the parts in their folded condition. In

. the construction shown, the corner portions which are located outside of the slit designated in each case 34 will come into direct contact with the outside of the respective end walls of the carton to afford further securement of the carton in its folded condition.

As shown in Figure 2, the web of carton stock I0 may be considered as traveling in the direction of the arrow 35. In the passage of the web through the lacquer-applying device I3, a continuous coating of lacquer is applied to the central portion of the web and sidewise projections are also simultaneously applied to correspond with the lacquer-coated portions of the blank illustrated in Figure 3. The web progresses and in its passage through the adhesiveapplying device I4, adhesive is applied tol areas as indicated which correspond to the corner areas for doctoring from the surface of the rollall of the lacquer not carried by the engraved design, the doctor being provided with a transverse member 4I which causes the lacquer scraped from the roll to be returned to the lacquer pan. By employing an engraved pattern for carrying the supply of lacquer and applying it to the carton stock, the amount of lacquer applied to the carton stock may be effectively regulated by making the pattern of proper depth and of such coarseness or flneness as will retain the desired quantity of the lacquer. It will be understood that the doctor will remove from the surface of the roll, including the unetched areas 38, all of the coating material which is not contained in the recessed portions `forming the intaglio.

The roll set or device designated I4 for applylng the adhesive inthe areas 3| is shown in Figures 6 and 1, and preferably comprises a smoothsurfaced, cylindrical platen 42 and a pair of adhesive-applying discs 43, 43. The two discs 43, 43 are of like form 'andconstruction and each is of a thickness which corresponds to the width of the area to be coated with adhesive material. As indicated best in Figure 7. each disc '43 is provided with cylindrical surface portions 44 and intervening recessed portions 45. 'I'he cylindrical surface portions 44 are provided with intaglios or other suitable engravings as indicated in Figure 6, the said engravings being adapted to be filled with liquid adhesive material as an incident to rotation of the respective discs through a bath of the material in a pan such-as indicated at 46. Suitable doctors such as indicated at 41 are provided for each of the discs 43 to remove therefrom all of the adhesive except that which is received within the engraved areas 44. As an incident to the passage of the carton stock web between the discs 43, 43 and the platen roll 42, the intaglios 44 apply adhesive to the areas of the web which constitute the corner portions 3| of the carton blank.

It will be perceived that because of the accurate control of the area to which the respective coatings are applied, it is feasible to apply two or more coatings successively and without drying one coating before the next is applied. 'I'his is an important advantage iiowing from the method and apparatus herein described, since it results in a material saving owing to the fact that but a single drying operation suices for both coatings. The form of the intaglio or engraved design on the roller 3'I and on the discs 43, 43 is here represented by stippling `and shading, respectively, merely forpurposes of clarity and illustration. It Will be understood that these designs may be alike and that they may be in very widely varied forms. The cross-sectional illustrations, Figures 8 and 9, 'merely typify the general character of the intaglio surfaces of the lacquer-applying member 31 and the adhesive-applying discs 43.

The devices I3 and I4 are preferably interconnected by gearing or other-suitable driving means so that they are properly synchronized with each other to cause the adhesive-applying device to apply the adhesive in properfregister with the lacquer applied by the :other device. Such driving means is represented schematically in Figure 1 by dotted line representation of a chain drive connection between the devices I3 and I4. It will be further understood that the devices I3 and I4 are driven at such speed that the lacquer and adhesive-applying portions thereof travel at the same peripheral speed as the paper web so as to avoid relative movement therebetween. Any suitable form of interconnectingdrive for this purpose may be applied between the devices I3 and I4 and one of the paper web guide rolls such as I2 or I5. Since such driving means is well known to those skilled in the art, it is here represented only diagrammaticallyin Figure 1 by a dotted line representation of a chain drive connection between the paper feed roll I2 and the device I3. Also, it will be understood that the rolls and discs of the devices I3 and I4 are journelled in suitable framework and that the platen roll of each device may be geared to its cooperating roll or disc so as to be positively driven at the proper speed. Since such details are not a part of the present invention and are well understood, they are not herein illustrated.

The described structure is such that it may be easily applied to more or less conventional carton-making equipment. 4It involves no dificult or complicated problems of operation and may be employed without disproportionate increase in the cost of cartonproduction.

Changes in the structure set forth may be made Without departing from the spirit of the invention, the scope of which should be determined by reference to the following claims, the same being construed as broadly as possible, consistent with the state of the art.

I claim:

1. In apparatus of the class described, an intaglio printing unit adapted to print on a predetermined area of a sheet, a second printing unit adapted vto print on another predetermined area of such sheet, said printing units being operable in closely coupled relation to each other so that the last applied printing is applied before the first applied printing is dried, said second mentioned unit comprising a platen roll and a pair of rotary disc-like members spaced longitudinally of said platen roll, said rotary members each having cylindrical surface portions provided with intaglio printing designs and having .their pe' ripheral portions beyond said designs recessed relative to said cylindrical portionsso as to be disposed in spaced relation to thesurface of said platen roll, said printing units being so syn- 4chronized that said second printing unit is operment between.the,-rst printed areas and the ro- Y tary members of said second unit.

2. In carton making apparatus, a pair of intaglio printing units, one of said units having an intaglio design adapted to cover the entire area on one side of a carton blankv which will be exposed on one side of the carton formed from such blank, the other of said units having an intaglio design adapted to be applied to a different area Y.

on said side of the blank itermediate portions of said before-mentioned printed area, and which intermediate area, when the carton is formed, will be disposed in contact with an area of the blank on the side of the carton opposite said exposed printed side, said printing units being -operable in'closely coupled relation to each other so that the last applied printing is applied before therst applied printing is dried, the printing unit for the last applied printing being provided with a recess on opposite sides of its intaglio so as to avoid contact with the first printed surfaces ing both printed areas.

3. In apparatus of the class described, a printing unit adapted to print on a predetermined of the blank, and means for'simultaneously dry- `area. of a sheet, a second printing unit adapted to print on another predetermined areaof such sheet, said printing units being operable in closely coupled relation to each other so that the last applied printing is applied before the first applied printing is dried, said second mentioned unitV comprising a' platen roll and a rotary intaglio member cooperating with said platen roll, said rotary Vintaglio member having a cylindrical surface portion provided with an intaglio printing design and having its peripheral portions beyond said design recessed relative to said cylindrical portion so as to be disposed in spaced relation to the surface of said platen roll, said printing units being so synchronized that said second printing unit is operative to print on a continuous sheet in predetermined areas intermediate areas printed by the first unit, said recessed portions of said rotary members permitting portions of said web to pass through said second printing unit free of engagement between the rst printed areas and the rotary members of said second unit.

` v RALPH R. RICHARDSON.

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