US1997718A - Folding box and method of making the same - Google Patents

Description

April 16, 1935. CLAFF 1 1,997,718

FOLDING BOX AND METHOD OF MAKING THE SAME Filed Aug. 3, 1934 2 Sheets-Sheet 1 April 16, 1935. c, CLAFF FOLDING BOX AND METHOD OF MAKING THE SAME Filed Aug. 3, 1934 2 Sheets-Sheet 2 G. :1 a q\ Patented Apr. 16, 1935 UNITED STATES FOLDING BOX AND METHOD OF MAKING THE SAME Clarence Lloyd Clafi, Randolph, Mass.

Application August 3, 1934, Serial No. 738,360

9 Claims.

This invention relates to folding boxes of that type having end flaps adapted to be used as closures. It also relates to a method whereby boxes of this type can be formed by a continuous process from constantly moving webs of material with minimum waste.

A further object is to provide a folding box the sides of which are reinforced by use of double thicknesses of material.

A still further object is to construct boxes by a method which permits the production of two or more complete boxes simultaneously, the number produced being dependent upon their sizes and the width of the webs from which they are formed.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts and in certain steps of the method hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and. arrangement of parts and in the disclosed method without departing from the spirit of the invention as claimed.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings Figure 1 is a side elevation showing, in diagram, the several steps followed in the method of printing, forming and assembling the components of the boxes.

Figure 2 is a plan view of a portion of a web showing the several stages in the production of several components simultaneously.

Figure 3 is a similar view of a second web showing the several stages through which it passes in the simultaneous production of several of the other components.

Figure 4 is a perspective view of one of the components after it has been printed and shaped.

Figure 5 is a similar view of the other component.

Figure 6 is a perspective View of the completed box.

Figure 7 is a transverse section therethrough.

Figure 8 is a plan view of the two blanks constituting the respective components of the box and illustrating a different arrangement of the adhesive.

In carrying out the method it is intended to use two webs of material indicated at A and B,

these webs being fed into a suitable machine from 55 large rolls from which they will be drawn continuously. The webs can be mounted between guide rolls C.

One of the webs, A, is provided for the formation of the components forming one side of the completed box while the components from which 5 the other sides of the boxes are to be made are adapted to be produced from the web B. These webs are adapted to be extended past printing rolls D and subsequently past scoring or creasing rolls E which also act to cut the webs at predetermined points. Thereafter the webs are moved across opposed faces of a form F and deecting or turning blades G are positioned where they will fold the edges of the web B upwardly onto the form and the edges of the web A downwardly onto the form. An adhesive is adapted to be placed upon selected portions, of the web by an applicator H of suitable construction and after the lapping folded portions have been pressed together by shoes I or the like provided for that purpose the webs are severed by suitable cutting means, as J, so as to be divided into completed boxes.

In Figure 2 several of the stages in the formation of one group of components have been illustrated. At station X the components are printed while at station Y the components are cut and scored. At station Z an adhesive can be applied if it is desired to employ one or more adhesive surfaces on these components.

Each of the components produced from web A is shaped as shown in Figure 4 and includes a main panel I, side panels 2 and an end panel 3. From the end panel 3 is extended an end flap 4 of the same length as panel 3 and constituting a part of one end closure of the box. Wings 5 and 6 are provided at the respective ends of each panel 2, each wing 5 terminating in line with the crease 1 formed between panel 3 and flap 4.

At station X printed matter is impressed upon the Web so that it will appear upon one or more of the panels I, 2 and 3. At station Y the web is slit longitudinally to form strips each of which is of the same over-all width of one of the components shown in Figure 4. These longitudinal 45 slits, which divide the panels 2 of one series of components from the panels 2 of the next adjoining series of components, have been indicated at 8. In addition to slitting the web longitudinally, it is also creased transversely as at l, 9 and I0. The creases 9 are provided where the panels 3 and the wings 5 of the components join the panels I and 2 respectively. The creases l, as before stated, are located where the flaps 4 are joined to the panels 3.

The creases 10 are provided where the wings 6 are joined to the panels 2.

At station Y the web is also slit transversely in line with the scores I as shown at H for the purpose of forming the ends of wings 5 and 6 and additional longitudinal cuts l2 are also made in the web between the scores 9 and I0 and extend longitudinally of the web for short distances so as to separate wings 5 from panels 3 and to separate wings 5 from the wings 5 and the flaps 4 of the next following component. Thus when the web components leave station Y they will be separated at all points except where the panels 5 are joii d to the flaps l.

Leaving station Y ith the components properly printed, scored -id partially cut, the components reach the deflecting blades G which act to turn the panels 2 with their wings 5 and 6 downwardly about the form F.

While web A is being made into components as before explained the web B is being similarly formed into a ond group of components. At station X the printed so that a suitable number of im ns will appear on each component. At c i Y the web is cut and creased, while at sta on Z a suitable adhesive can be applied to proper portions of the web. Components made from the web B can be such as shown in Figure 5, each component including a main panel I3, side panels M, an end panel l5 and a flap l6 coextensive in length with the end panel.

When the web is cut and creased at station Y it is also split longitudinally as at I! to divide the web into separate strips the width of each of which is equal to the over-all width of one of the components. In addition to slitting the web at station Y the mechanism also creases the web longitudinally at I8 to define the side panels l4 and the main panels 53. Ihe web is also creased transversely as at is and 29, the creases I9 being located between panels i5 and their flaps I 5 while the creases 25 are located between the panels l3 and E5. Material is cut out of the web at the ends of the panels l4 between the components of the adjacent series at the ends of their panels [5 and flaps ES. The spaces from which this material has been removed have been indicated at 2|.

When the web leaves station Y the components are connected solely between flaps l6 and the main panels [3 and while thus joined are fed to stationary folding blades G which act to bend the panels l4 upwardly onto the sides of form F so that they can pass between or into lapped relation with the downwardly folded panels 2 of the components formed from web A. Before the flaps are brought into lapped relation, however, a quick drying adhesive 22 is applied to selected surfaces of one or both panels H or to selected surfaces of one or both panels 2. Consequently as the two webs A and B continue to move forwardly their lapping panels will be pressed together by the pressing elements I. As the two webs thus joined leave the pressing elements I they are severed transversely by the cutting elements J one of which cuts across the web A in line with the creases H! but solely between wings 6 while the other cutting element severes web B where the flaps l6 are joined to the panels I3. The places where these transverse cuts are made have been indicated by broken lines at 23 on web A and at 24 on web B. Obviously after this severing action has taken place the formation of the boxes will be completed, each box, as shown in Figures 6 and 7, being made up of the two components forming double side walls, each side wall comprising a panel 2, a panel l4, and an interposed thickness of adhesive 22.

By having the two webs properly positioned relative to each other and properly timed as to speed, they can be accurately printed, cut, shaped and assembled while the two webs are in motion with the result that from these continuously moving webs boxes may be produced at high speed. Furthermore by splitting each web into separate strips, two or more completed boxes can be produced simultaneously. It is to be un derstood, however, that instead of splitting each web longitudinally as has been shown and described, boxes can be made one at a time from webs of such width that each will produce one box only at each finishing operation.

While the adhesive has been shown applied to the outer faces of the panels l4 and none of it has been applied to the panels 2 it is to be understood that other locations of the adhesive can be utilized. For example, and as shown in Figure 8, the component K formed from the upper web A can be provided with adhesive 24 on one surface of one panel 2 while the component L formed from web B can be provided with an adhesive 25 on one surface of one of its panels M. The adhesive can be so located that when the components are assembled the adhesive 24 on panel 2 will become ailixed to one panel l4 while the adhesive 25 on the other panel M will become affixed to the other panel 2. Furthemore, if preferred, the adhesive could be applied entirely to the panels 2 instead of to the panels I4, this being the reverse of the arrangement illustrated in Figures 4 and 5.

It will be noted that none of the material of web A is wasted and that the only material of web B which is wasted is that produced by the formation of the openings 2|. Each of these openings is of an area equal to two pairs of wings 5 and 6.

In view of the new and novel way in which the boxes can be made, it is possible to produce them at much lower cost than heretofore due to the high speed at which they are completed. The resultant box is also advantageous as compared with other similar boxes because of the increased strength due to the double thickness of the side walls of the box.

What is claimed is: v

1. The method of making boxes having sides of double thickness which includes the step of feeding separate webs continuously to blank creasing and shaping means to produce opposed components each having side panels and then, while the components are in motion, affixing the panels of one component to the corresponding panels of the opposed component to form said sides.

2. The method of making folding boxes having sides of double thickness, which includes the step of feeding separate webs to blank creasing and shaping means to produce opposed components each having side panels and then, while the webs are still in motion, applying adhesive to certain of the panels and folding the panels of the two components into lapped relation to join them and produce the sides of the boxes.

3. The method of making'folding boxes having sides of double thickness, which includes the step of feeding separate webs to blank creasing and shaping means to produce opposed components each having side panels and then,while the webs are still in motion, applying adhesive to certain of the panels and folding the panels of the two components into lapped relation to join them and produce the sides of the boxes, and severing the components of each web whereby the joined components will form a completed box.

4. The method of making folded boxes having sides of double thickness which includes the step of continuously feeding separate webs to printing means and to means for creasing and shaping components in each web, each component having side panels, and thereafter folding the panels of the two components into lapped relation and affixing them to join the components and produce the sides of double thickness.

5. The method of making folded boxes having sides of double thickness which includes the step of continuously feeding separate webs to printing means and to means for creasing and shaping components in each web, each component having side panels, thereafter folding the panels of the two components into lapped relation and afiixing them to join the components and pro duce the sides of double thickness, and severing the components of each Web whereby the joined opposed components will form a completed box.

6. The method of making simultaneously a plurality of folding boxes each having sides of double thickness which includes the step of feeding separate webs continuously to cutting and creasing means whereby parallel series of components are shaped and creased in each web, each component being provided with side panels extending to but severed from the side panels of the corresponding components in the next adjoining series, and subsequently folding the panels of each component to lap the corresponding panels of a component of the other web and affixing the lapping panels to join the components, and severing the components from the respective webs thereby to produce a completed box.

'7. The method of producing folding boxes having sides of double thickness which includes the step of feeding separate webs continuously to a cutting and creasing station, cutting and creasing each of the webs at said station to divide each web into a series of joined components, each component having side and end panels, continuing the webs to a folding station for shifting the panels on corresponding components of the opposed webs into lapped relation and joining them, and then severing the components successively from the next adjoining components on the respective webs, thereby to complete the formation of the box.

8. The method of making folding boxes having sides of double thickness which includes the step of feeding separate webs continuously to a cutting and creasing station, cutting and creasing the two webs at said station to divide each web into parallel series of connected components, each component comprising a blank having side and end panels, said blanks of each series being severed from the blanks of the adjoining series between their side panels while the blanks of each series are joined at their end panels, subsequently folding the panels of the continuously moving components so that the panels of the components of one web will lap the panels of the corresponding components of the other web, connecting the lapping panels, and severing the components along their end panels to complete the formation of the boxes.

9. The method of producing folding boxes having sides of double thickness which includes feeding separate webs to a cutting and creasing station, cutting and creasing one of the webs at said station to divide the web into parallel strips, all of the material of each strip being utilized to form a longitudinal series of components, each component being made up of a main panel, side and end panels and a flap upon the end panels joined to but adapted to be severed from the main panel of the next adjoining component of said series, there being wings integral with and constituting continuations of the side panels at each end thereof, the adjoining wings of every four components being disposed in a group; and dividing the other web at said station into longitudinal strips each of which comprises a connected series of components, each component comprising a main panel, side panels and an end panel having a flap, the flap of each end panel being joined to but adapted to be severed from the main panel of the next adjoining flap, there being openings in the sides of the strips between the ends of the side panels coextensive with the areas of a group of wings on the side panels of the first named web; and subsequently joining the side panels of each component of one web to the side panels of a corresponding component of the other web and severing the flaps of the components from the panels of the next adjoining webs.

CLARENCE LLOYD CLAFF.

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