US2321681A - Package - Google Patents

Description

June 15,' 1943. o. H. HULTIN 2,321,681

PACKAGE Filed Aug; 16, 1941 2 Sheets-Sheet i INVENTOR 694. can.

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ATTORN Y vJun 15, 9 3 o. H. HULTIN 2,321,681

PACKAGE Filed Aug. 16, 1941 2 Sheets-Sheet 2 INVENTOR can H. W BY QMQAQ ATTORNEY Patented June 15, 1943 UNITED STATES PATENT I OFFICE menace Oscar H. Hultin, Quincy, Mass., assignor to Pneumatic Scale Corporation, Limited, Quincy, Masa, a corporation of Massachusetts Application August 16, 1941, Serial No. 407,165

2 Claims.

This invention relates to a package.

" One object of the invention is to provide a novel and improved construction of package adapted to be closed and sealed in a novel manner to effectively seal the contents of the package.

A further object of the invention is to provide a novel and improved lined package in which provision is made for closing and sealing the mouth of the. liner in a novel and improved manner.

With these general objects in view and such others as may hereinafter appear, the invention consists in the package hereinafter described and particularly defined in the claims at.the end of this specification.

In the drawings illustrating the preferred embodiments of the invention, Fig. 1 is a perspective view of a lined package showing one form of top closure for the lining embodied in the present package; Fig. 2 is a similar view showing one of the closing flaps 0f the carton closed upon the top of the lining bag; Fig. 3 is a perspective view of a completely closed and sealed package embodying the present invention; Fig. 4 is a perspective view illustrating one step in the formation of the lining top closure illustrated in Fig. 1; Figs. 5 and 6 are cross-sectional views showing the steps followed in folding and overfolding the lining closure shown in Fig. 4; Fig. 7 is a perspective view of the lining top closure just prior to being folded as illustrated in Fig. 1; Fig. 8 is a perspective view of a lined package embodying the present invention showing another form of top closure for the mouth of the lining; Fig. 9 is a similar view showing the folded closure laid against the top of the package; Fig. 10 is a perspective view illustrating the manner in which the mouth of the lining is spread and provided with adhesive together with one of the carton closing flaps to form a sealed closure for the lining; Fig. 11 is a cross-sectional view through the package illustrated in Fig. 10 showing the construction after it has been closed and sealed; Fig. 12 is a perspective view similar to Fig. '10 illustrating another form of seal for the mouth of the lining; and Fig. 13 is a cross-sectional view similar to Fig. 11 showing the construction of the package shown in Fig. 12 after it has been completely closed and sealed.

In general, the present invention contemplates the provision of a lined package comprising a lined carton having a novel and improved top closure which is characterized by the provision of but two opposed closing flaps for the top of the carton and in which the mouth of the lining is provided with a closure such as to reduce to a minimum the liability of leakage of the material therethrough. One of the preferred forms of closure for the mouth of the inner bag or lining comprises an elongated fold formed by folding outwardly the opposite end portions. of the extended top of the lining to provide a continuous closure from one side of the bag to the other. Thereafter, the upstanding closure thus formed may be folded down into engagement with the top of the lining bag to effectively seal the contents therein. Another preferred form of top closure for the mouth of the lining bag may be formed by folding inwardly two opposed end portions of the extended top of the lining bag to form a pleated closure, the mouth portion of which may be sealed'in a novel manner to effectively enclose the contents of the lining bag.

In practice, such top closures for the mouth of the lining bag are preferably performed by suitable mechanism in a packaging machine while the bag is supported in the outer container or carton. When, as heretofore, the lining closure is performed while the bag is supported in the conventional carton provided with the usual four top closing flaps comprising two opposed endflaps and two opposed side flaps, several difficulties are encountered and disadvantages result from the presence of the two opposed narrow end flaps of the carton. In practice, the mechanism for performing the top folding operations of the mouth of the lining must of necessity be disposed so as to sweep through the path of the top closing flaps of the carton so that means for bending the flaps outwardly and for retaining them in this position during the folding operation had to be provided.

In accordance with the present invention, the

carton is provided with but two opposed top closing flaps, the narrower opposed flaps being eliminated, whereby to enable such top closures to be more readily and conveniently performed upon existing machines in which the mechanism for bending the end flaps outwardly may be climinated. In addition, the elimination of the two opposed narrow end closing flaps serves to reduce the bulk or thickness of the completed top closure thus enabling a neater appearing package to be produced.

In order to effectively seal the carton at the ends where the closing flaps are omitted, the

present carton is provided with sealing wings upon one of the remaining side flaps which are arranged to close over the adjacent edges of the carton to form a relatively tight and efliin Fig. 8. In accordance with the present invention one form of top closure for the lining bag, as illustrated in Fig. 1, may be formed by folding outwardly two opposed sides ofthe extended mouth portion of the lining and pressing inwardly the remaining two opposed sides as shown in Fig. 4, to provide an elongated upstanding tab 22' extending across the entire mouth of the bag. Thereafter, the upstanding tab 22 is folded and overfoldedas shown in Figs. 5 and 6 to present the closure in the condition illustrated in Fig. 7, in which two triangular fiaps 24, 26 extend over the edge of the carton. The triangular fiaps 24, 26 are then folded inwardly to complete the top closure of the lining bag as shown in Fig. 1.

In practice, the carton is then passed through suitable adhesive applying mechanism to provide a coating of adhesive over the entire inner surface of the carton side fiap I2, and upon the inner surfaces of the sealing wings I6, I8 of the side fiap I4. The side fiap- I4 is then folded inwardly over the top of the closed lining bag and the sealing wings I6, l8 are folded down and pressed into sealing engagement with the adjacent panels of the carton as shown in Fig. 2. Finally, the remaining carton fiap I2 is closed over the fiap I4 and pressed into sealing engagement therewith to provide the completely sealed package as shown in Fig. 3. Thus, an efiicient and effective top closure for the lining and the carton is provided without the use of the usual narrow end fiaps of the carton.

Referring now to Figs. 8 to 11 inclusive, as therein shown,- another form of top closure for the mouth of the lining bag may be formed by folding inwardly two opposed portions of the extended mouth of the lining bag and then bringing together the remaining two opposite sides to form an upstanding closure or tab as shown in Fig. 8. The upstanding tab portion 30 of the closure is then folded down into engagement with the top of the package with the upper or mouth portion 32 thereof extending over the edge of the container and resting upon a part of the side flap I2 as shown in Fig. 9. Thereafter, the side fiap I4 is folded over on top of the lining closure and the sealing wings I6, I8 are pressed into engagement with the panels of the carton as before.

In order to provide a sealed closure for the mouth portion 32 of the lining in a simple and eflicient manner, the mouth portion extending beyond the edge of the closed flap I4 may be spread apart, as shown in Fig. I0, one half resting fiat on top of the fiap I4 and the other half resting on the extended flap I2. With the top closing members in this condition, the package may be passed through the standard adhesive applying mechanism to provide adhesive simultaneously over the inner surfaceof the flap I2 and upon the extended half of the mouth portion 32. Thereafter the fiap I2 is folded over on top of the flap I4, thus also folding the adhesivelyv coated half of the mouth portion 32 into contact with the opposing half and forming a sealed closure for the mouth of the lining. As illustrated in Fig. 11, the construction of the completely closed and sealed package provides an interlocking of the mouth of the lining between the upper and lower flaps I2, I4 and enables an adhesive seal to be provided for the mouth portion of the lining simultaneously with the adhesive sealing of the top flap I2 into engagement with the flap I4. In addition, a positive seal is effected along the opposed edges of the carton where the end fiaps are omitted, by the provision of the sealing wings I6, I8, as above described.

As illustrated in Figs. 12 and 13, a modified form of closure for the mouth portion 32 of the lining bag may include a sealing strip 34 which may be secured over the extended mouth portion 32 and in engagement with the inner surface of the closing fiap I2, as clearly shown in Fi 12. Thereafter, the carton closing fiap I4 provided with the sealing wings I6, I8, is folded over the top of the lining as before and the flap I2 together with the sealing strip 34 is provided with a coating of adhesive. The completely closed and sealed carton of the modification shown in Fig. 12 will appear as shown in Fig. 13 with the sealing strip 34 and fiap I2 adhesively secured to the top of'the fiap I4, and with the mouth portion 32 interlocked between the upper and lower carton fiaps in a manner such as to provide a secure and positive seal of the lining bag and the outer carton.

From the above description, it will be seen that the construction of the present package is such as to facilitate the performance of the top closing operation for the mouth of the lining and enables an efiicient carton closure to be made in a manner such as to effectively seal the contents of the container in a novel and improved manner with but two of the usual four carton closing fiaps.

While the preferred embodiments of the invention have been herein illustrated and described, it will be understood that the invention may be embodied in other forms within the scope of the following claims.

Having thus described the invention, what is claimed is:

As a new article of manufacture, a' lined package containing a commodity comprising a carton having but two top closing fiaps formed as extensions of two opposed walls of the carton, a lining bag within the carton having its mouth portion closed to confine the commodity therein, one of said top closing fiaps being provided with laterally'extended sealing wings arranged to be folded down and adhesively secured to the remaining two opposed walls of the carton, the

remaining top closing fiap being adhesively secured to the top of said first top closing flap.

2. As a new article of manufacture, a lined package containing a commodity comprising a carton having but two top closing flaps formed as extensions of two opposed walls of the carton, a lining bag within the carton having the top thereof folded to form an elongated folding tab extending entirely across the mouth of the carton and projecting beyond the opposite ends thereof, said tab being folded and overfolded into contact with the top of the lining bag, the laterally extended end portions then being folded inwardly upon the top of the lining bag,:one of said top closing flaps being provided with laterally extended sealing wings arranged to be folded down and adhesively secured to the remaining two opposed walls of the carton, the remaining OSCAR H. HULTIN.

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