US2389291A - Carton with removable liner - Google Patents

Description

NOV. 20, 1945. R BERGSTElN 2,389,291

CARTON WITH REMOVABLE LINER Filed June 12, 1944 Z SheetS- Sheei 1 g i: 6 i 7 3'3 "1 I? I t .35 J, I a "H i 4 '1 :2" I, 2 ii; 1

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ROBERT igglgg t I 9 z BY 9" 1945. R. M. BERGSTEIN CARTON WITH REMOVABLE LINER Filed June 12, 1944 2 Sheets-Sheet 2 v 315. I- 7 T 2 7 Z 2 L 2 r .uh.

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INVENTOR.

Patented Nov. 20, 1945' CARTON REMOVABLE LINER Robert Morris Bergstein, Cincinnati, Ohio, as-

signor to Robert Morris Bergstcin and Frank David Bergstein, trustees Application June 12, 1944, Serial No. 539,901

13 Claims.

My invention relates to lined cartons, such as packages which in the filled and closed condition comprise assealed bag containing the contents and an outer carton or box containing the bag. In my patents. No. 2,099,256, issued November 16, 1937, No, 2,250,249, issued July 22, 1941,

and Re. 20,789, dated July 12, 1938, -I have shown -methods of producing various kinds of lined containers, while in my Patent No. 2,166,388, issued July 18, 1939, I have describedv a machine for making them.

My present invention is directed to the solution I of certain problems connected primarily with the use of such packages after they have come into the possession ofthe retail merchan. iser or the ultimate consumer. Although in the methods of forming lined cartons, it is necessary that the liner be attached to the carton, and although in the use and filling of such cartons it is desirable to have the liner attached so that the act of erecting or squaring up the container will at the same time square up the liner and open it for filling, in the packaging of certain products, it is at times desirable to be able to remove the liner from the carton. Some commodities may be more easily handled and dispensed in the home from a bag than from a carton. Where the bags are of transparent material, the removal of a certain number of the filled and sealed bags from the cartons in which they are shipped may be desirable for display purposes in retail merchandising establishments. Where products are carried by the consumer, as in the case of tobacco, and are used at intervals, when the quantity of the product remaining in the bag becomes small, it is frequently more convenient to carry it in a rolled bag or pouch than in the complete package including the outer container.

Another aspect of'the problem relates to the separation of the carton or box from the bag. Sometimes it is desired to use the carton or a portion thereof for some other purpose in the household, which use is impeded by the presence of an inner liner. Again, in the case of seal-end cartons containing sealed bags, it is difficult and frequently impossible to cut open the carton without at the same time cutting the bag in one or more places. This not only makes it impossible to reclose the bag by folding, where only a portion of its contents is used, but also makes it impossible to dispense the contents accurately and conveniently by pouring them from a hole in the bag formed by cutting oil a corner of the seal.

' Thus, a problem presented by seal-end lined containers hitherto known in the art is that of opening the container without opening the bag.

The principal objects of my invention are the solution of these and similar problems in lined cartons by simple changes in the construction thereof which neither add significantly to the cost of the containers nor interfere with their manufacture, their filling and sealing, or their use as shipment packages.

These and other objects of my invention, which will be set forthhereinafter or will be apparent to one skilled in the art upon reading these specifications; I accomplish by that construction and arrangement of parts, of which I shall now describe certain exemplary embodiments. Reference is made to the accompanying drawings wherein:

Figure 1 is a plan view of a blank for a so-called six-sided carton arranged for the reception of a liner and with the liner indicated in dotted lines.

Figure 2 is a plan view of the blank of Figure 1 tubed about the liner.

Figure 3 is a perspective view of the completed package.

Figure 4 is a perspective view showing the liner and contents removed from the carton.

Figure 5 is a plan view of a blank for a so-called I four-sided carton adapted to receive a liner,

Figure 6 is a plan view of the blank of Figure 5 tubed about a liner.

Figure 7 is a perspective view of the completed package. a Figure 8 is a perspective view showing a portion of the container removed to permit the sealed end of the bag tobe straightened out. s

Figure 9 is a perspective view of the bag entirely removed from the container of Figure '7.

By the term liner herein, I intend to include preformed bags deposited upon the carton blanks, preformed tubes, open at both ends and deposited upon the carton blanks, or structures produced by associating liner sheets with the carton blanks, then tubing the sheets as a part of the tubing operation for the cartons. It is immaterial in my invention whether the knocked-down tubed carton in the form in which it is shipped to the packager contains a bag closed at one end or a tube closed at neither end.

Also, modes of associatingbags, tubes or liner sheets with carton blanks and machines therefor, are not limitations upon my presentinven- 'tion; reference to my patents has been made above to indicate disclosures of suitable machines and methods.

Briefly, in the practice of my invention, I have found it possible to associate the liner structures with portions of the carton body in such a way as to fulfill all of the exigencies of lined carton manufacture and use and, by making these portions of the cartons removable from the remainder, to permit the removal of the bag from the carton or the carton from the bag in exemplary embodiments hereinafter set forth.

In Figure 1, I have shown a carton comprising enclosing body walls I, 2, 3 and 4 and a glue flap I articulated together by transverse score lines. The carton in this instance is a so-called tuckend carton, walls I and 3 being provided with short flaps 6 and 1. Wall 2 carries at one end a closure flap 8 bearing an articulated tuck member I, while a similar flap it and-tuck member ii is carried by the wall 4. Transverse score lines i2 and I! pass respectively and centrally through the walls i and 3 and their associated flaps, and it is along these score lines that the carton blank will be bent in tubing it.

In my Patent No. 2,114,621, a preformed liner, indicated at I I, is associated with the blank before the blank is tubed. This liner will usually be in the form of a bag closed and sealed at one end; and the purpose of tubing the blank upon the score lines I! and i 3 is to provide a more natural disposition of the bottom seam when the carton is opened up. The tubing is accomplished in the ordinary way and with the ordinary tubing mechanism, and involves the bending of the blank upon the score lines aforesaid and the adhesive union of the glue flap to the wall I. The tubed structure is illustrated in Figure 2.

The liner ll must be adhered to the carton blank in order to maintain its position thereon during the tubing operation and in order to be properly retained by the blank after the tubing operation. Moreover, the liner should be so adhered to the carton blank that when the tubed structure is erected or squared up, the liner will also be squared .up so as to present a completely open mouth for ready filling.

Hitherto it has been the practice to adhere the liner generally to a pair of opposite walls of the carton, such as the walls 2 and 4, either all over their meeting surfaces or at intervals throughout their meeting surfaces. I depart from this practice and instead. I adhere th liner to the walls 2 and I in certain restricted areas, and I surround these areas with lines of weakening or cut lines in the boxboard, as indicated, for example, at 15 and [6 in Figure l. The shape of these areas is not a limitation on my invention. They will, however, be preferably restricted in size. They may be round or square, or of any other suitable shape: but since it is desirable to have the liner adhered to walls 2 and l substantially across the faces of those walls (so that the liner will be positively opened when the carton is erected), I prefer to make the areas of adhesive application, indicated at IT and I8, of elongated form. I am not restricted, however. to the use of one such area for each wall. A pair of spaced areas may be employed in each wall located close to the side edges thereof.

The manner in which the walls are weakened, as at II and I6, is, likewise, not a limitation on my invention. The board may be perforated with holes or'slits so as to weaken it. Cutting rules may be employed so as partially to cut through the board or so as entirely to cut through the board. In the first instance, the weakened areas may. be indicated to the eye only by faint l nes in a printed carton or may, indeed, be invisible. In the second instance, the cutting rules will be nicked at intervals so that the severed portions of the board will be retained in place.

The complete package is shown in Figure 3. If it be desired to remove the bag from the carton without opening the bag or interfering with its sealed condition, it is necessary only to open one end of the carton and then depress the portions of the board demarked by the weakened lines Hi and I6, whereupon the bag may b lifted bodily from the carton. The small areas of the board so removed from the carton will remain in adhesive union with the bag, as shown in Figure 4 at IS. The carton itself will usually be printed with instructions indicating how the bag may be removed; and if it is necessary, the removable portions of the board may be outlined on the printed fac of the carton. The removable portions of the board may also be shaped to conform to any important symbol or lettering onthe face of the carton, so that when the bag is removed therefrom, the portions of board adhered to it will identify it or its contents in an eflicient and attractive manner.

Figure 5 is a plan view of a four-sided carton comprising body walls 20, 2|, 22 and 23 and a glue flap 26 articulated together, as is usual in such cartons. This carton is a so-called seal-end carton, so that the body walls have sealing flaps 25. 26, 21 and 28 articulated to their respective ends along main longitudinal score lines 29 and 30. A liner, indicated in dotted lines at St, is to be associated with this blank, as set forth in my Patent No. Re. 20,789.

In the practice Of this invention, I provide the carton with one or more longitudinal lines of weakening. In Figure 5, I have shown two such" lines at 32 and 33, located fairly close to each other and fairly close to one end of the carton body. The liner Si is adhered to a pair of opposite walls of the blank of Figure 5 or to all four walls, if desired; but the adhesive union is limited to the space between the lines of weakening, as indicated at 34.

The carton of Figure 5 is shown in tubed condition in Figure 6 and may thus be shipped to the packager. He will erect it, close the bottom of the liner if this has not already been done, fill it, seal the bag, and close and seal the carton, as is known in the art, forming the completed package of Figure '7.

When such a package is opened by cutting one of the closures, it is difiicult, if not impossible, to avoid cutting the liner at the same time. But with thepackage of my invention, it is quite easy to sever the board of the carton along the weakened line 32, which enables the entire carton closure to be lifted off without affecting the seal of the bag. The sealed bag end may then be drawn upwardly, as shown in Figure 8; and the bag maybe opened by cutting off a corner of the seal, as along the dotted line 35. This forms a convenient spout for the dispensing of the contents of the bag, and the bag may bereclosed more or less tightly by folding, as will be readily. understood.

Where the primary problem is that of opening a seal-end carton without disturbing the contained bag, the second line of weakening 33 may be omitted. Where it is provided, however, it is possible to remove the entire bag from the carton, as shown in Figure 9, by breaking the board along this second line of weakening. The bag. as so removed, has adhered to it a continuous, rec- Where only the line of weakening 32 is pro vided, it is not necessary that this line pass around all four sides of the. carton, it being sufilcient if it pass around three of them. This provides for the effective opening of the carton, but the closure part remainshinged to it, which is sometimes advantageons in protecting a reclosed bag.

While the carton of Figures 1 to 4 has been illustrated as a tuck-end carton and that of Fi ures 5 to 9 as a seal-end carton, it will be understood that the embodiment of my invention, illustrated in the first group of figures, may be applied to the seal-end carton as well, and that the sealend carton may be treated as indicated in Figures 1 to 4. The advantage in a seal-end carton usually lies in the removability or the closure as such. Nevertheless, a seal-end carton may be provided with a line of weakening, such as at 32, to permit the removal of the closure, and also with removable areas of board, as indicated in Figures 1 to 4. It may be pointed out that the removal of the bag as such (tom the carton leaves the carton or a portion thereof usable as a box or tray to contain other articles.

Modifications may be made in my invention without departing from the spirit of it. Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A package comprising an outer paperboard carton and an inner tubular flexible liner, said carton having main body walls and closure means at both ends whereby it is capable of wholly containing said liner and contents packed therein,

said liner being in adhesive union with walls of said carton so that the act of erecting the carton results in similarly erecting a portion of the liner,'

the areas within which said liner is adhered to walls of said carton being less in extent in said walls than the areas of the walls themselves, and the said areas of adhesive union being demarked in said walls by lines for severance, whereby by severing said areas, said liner may be removed from said carton with said areas of paperboard still in adhesive union with said liner.

2. A package comprising an outer paperboard carton and an inner tubularflexible liner, said carton having main body walls and closure means at'both ends whereby it is capable of wholly containing said liner and contentspacked therein. said liner being in adhesive union with walls of said carton so that the act of erecting the carton results in similarly erecting a portion of the liner, the areas within which said liner is adhered to walls of said carton being less in extent in said walls than the areas of the walls themselves, and the said areas of adhesive union being demarked in said walls by lines for severance, whereby by severing said areas, said liner may be removed from said carton with said areas of paperboard still in adhesive union with said liner, said tubular liner being sealable at both ends and removable in filled condition from said carton in the manner set forth.

3. 'A package comprising an outer paperboard carton and an inner tubular flexible liner, said carton having main body walls and closure means at both ends whereby it is capable of wholly containing said liner and contents packed therein, said liner being in adhesive union with walls of said carton so that the act of erecting the carton results in similarly erecting a portion of the liner, the areas within which said liner is adhered to walls of said carton being less in extent in said walls than the areas of the walls themselves, and the said areas of adhesive union being demarked in said walls by lines for severance, whereby by severing said areas, said liner may be removed from said carton with said areas of paperboard still in adhesive union with said liner, said tubular' liner being sealable at both ends and removable in filled condition from said carton in the manner setforth, the said areas of paperboard adhered to said liner when so removed bearing identifying indicia for the liner and its contents.

- 4. A package comprising an outer paperboard carton and an inner tubular flexible liner, said carton having main body walls and closure means at both ends whereby it is capable of wholly containing said liner and contents packed therein, said liner being in adhesive union with walls of said carton so that the act of erecting the carton result in similarly erecting aportion of the liner, the areas within which said liner is adhered to walls of said carton being less in extent in said walls than the areas of the wall themselves, and

the said areas of adhesive union being demarked in said wall by line for severance, whereby by.

severing said areas, said liner may be removed from said carton with said areas of paperboard still in adhesive union with said liner, said tubular liner being sealable at both ends and removable in filled condition from said carton in the manner set forth, the said areas of paperboard adhered to aid liner when so removed bearing identifying indicia for the liner and its contents, said liner being a bag of transparent substance capable of rendering the said contents visible in at least part of the area of said liner.

5. IA package comprising an outer paperboard carton and an inner tubular flexible liner, said carton having main body walls and closure means at both ends whereby it is capable of wholly containing said liner and contentspacked therein. said liner being in adhesive union with walls of said carton so that the act of erecting the carton results in similarly erecting a' portion of the liner, the areas within which said liner is adhered to walls of said carton being less in extent insaid walls than the areas of the wall themselves, and the said areas of adhesive union being demarked in said walls by lines for severance, whereby by severing said areas, said liner may be removed from said carton with said areas of paperboard still in adhesive union wlthsaid liner, said tubular liner being sealable at both ends and removable in filled condition from said-carton in the manner set forth, the said areas of paperboard adhered to said liner when so removed bearing identifying indicia for the liner and its contents,

said liner being a bag of transparent substance the total external area of said liner.

6. A paperboard container comprising a fold-.

' able body having four enclosing walls in articulation, means at the ends of said wall for effecting end closures, score lines upon which the paperboard is bent traversing vertically an opposite pair of said sides, a tubular liner located within said carton, said liner being adhered to minor areas of the other pair of opposite enclosing walls, said minor areas having greater horizontal than ver-' tical extent, but approaching horizontally the side edges of said walls, said areas being demarked in said walls by lines for severance whereby said liner may be removed from said container along with said areas of paperboard.

7. The structure claimed in claim 6 wherein the end closure means of said container are tuckend flaps on one end at least.

8. A package comprising a paperboard carton having enclosing body walls in articulation and seal-end flaps at the ends of. said body walls, said carton containing a tubular liner, said liner being adhered to walls of said carton and adapted to hold contents therein, said carton having in three adjacent sides thereof at least a line for severance, said liner being adhered to said carton walls at one side only of said line for severance, said liner being capable of holding contents within said carton when said liner is closed and sealed at both ends, and said-line for severance permitting at least partial detachment of one sealed end of said carton so as to disclosea sealed end of said bag.

9. The structure claimed in claim 8 wherein said line for severance extends transversely of all walls of said carton so as to permit entire removal of one end thereof.

10. The structure claimed in claim 8 wherein said line for severance extends transversely of all walls of said carton so as to permit entire removal of one end thereof, and in which a second line for severance parallels the first line for severance, the areas of adhesive union of said liner to said carton lying wholly between said two lines for severance so that end portions of said carton may be removed from said liner by breaking said carton on said lines of severance, said liner remaining after said removal with a band of paperboard in adhesive union with it.

11. In a package, a seal-end carton in sealed condition, said carton comprising enclosing body walls and seal-end flaps and a filled and closed bag located within said sealed carton, said carton having its enclosing walls traversed by a spaced pair of line for severance, said bag being adhered to said carton walls between said lines for severance, said package being one in which carton portions at either side of said pair of lines for severance are removable, leaving the filled and closed bag with a band of paperboard passing thereabout.

12. In a package, a seal-end carton in sealed condition, said carton comprising enclosing body walls and seal-end fiapsand a'filled and closed bag located within said sealed carton, said carton having its enclosing walls traversed by a spaced pair of lines for severance, said bag being adhered to said carton walls between said lines for severance, said package being one in which carton portions at either side of said pair of lines for severance are removable, leaving the filled and closed bag with a band of paperboard passing thereabout, said bag of paperboard bearing indicia identifying said bag and its contents.

13. In a package, a seal-end carton in sealed condition, said carton comprising enclosing body walls and seal-end flaps and a filled and closed bag located within said sealed carton, said carton having its enclosing walls traversed by a spaced pair of lines for severance, said bag being adhered to said carton walls between said line for severance, said package being one in which carton portions at either side of said pair of lines for severance are removable, leaving the filled and closed bag with a band of paperboard passing thereabout, said bag of paperboard bearing indicia identifying said bag and its contents, said bag being in part at least of translucent material.

.ROBERT MORRIS ,BERGSTEIN.

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