US1821246A - Multiplex bag - Google Patents

Description

Sept. 1, 1931. w. TAYLOR MULTI FLEX BAG Filed June 17, 1927 I 2 Sheets-Sheet l 11W 'ENTOR. w llham 14. Taylor A TTORN E Y. I

Sept/1', 1931.

w. 1.. TAYLOR MULT IPLEX BAG Filed June 17, 1927 2 Sheets-Sheet 2 I XI 'EXTOR.

.1 TTORXE) Patented Sept. 1 1931 UNITED STATES WILLIAM L. TAYLOR, OF CINCINNATI, OHIO" MULTIPLEX BAG Application filed June 17, 1927. Serial No. 199,540.

My invention relates to an improved means of making bags and more particularly to 'duplex bags in which a novel construction of theinner ply or liner blank and outer ply 5 or cover blankform important parts of the finished bag. c

My invention is especially adapted for use in the manufacture of duplex or lined bags,

usually employed for packing and shipping m merchandise, such, for instance, as smoking and chewing tobacco, it being necessary that packages containing this class of goods be made, not only from air and moisture-proof material, but also after the bag has been 5 filled with tobacco and closed, it has recently been desired toentirely surround or cover said filled'bag withan additional cover of thin wax paper, or a paper of similar moisture-proofconstruction. In order to eflicient- 1y apply and seal said additionalcover of thin moisture-proof paper upon the filled and closed bag by the tobacco manufacturers packing equipment, it is essential that the bag be of perfect form and that the ears at the bottom of the bag be of limber or flexible construction, whereas'heretofore the flexibility of said ears was not an important factor, nor was the trueness in sha e of the bag so particular. However, the exibility so of said ears and the correctness ofshape of said bag. are very essential features when I itis desired to put said additional moisturel proof COVG-I HPOIISaid filled and closed bag y the manufactufers present packing equip- 36 ment.

The prlmary'object of the present inveng in Fig 2 previous to having the top closed tion is to provide an improved inner ply or liner blank, an improved outer ply or cover blank, and improved means of ma 'ng same,

40 which entirely eliminates the objections and difficulties above referred to, and the practice of which improved means results in a better made or squarer shaped bag with aminimum number of cast-olfs,-due to the'required exactness of the bags for applying said additionalcover of thin moisture-proof paper by the tobacco manufacturers packing equipment.

Further objects of my invention are to provide a multiplex bag, as abovedescribcd and for the purposes intended, which is simple, efficient, inexpensive to manufacture, and theconstruction of which is highly desirable for use upon packing equipment where an additional cover of thin moisture- 5F proof paper is applied to the bag after the latter has been filled, closed and sealed by said packing equipment.

Briefly and generally stated, theinvention onsists in cutting" away a portion of the inner ply or liner blank and outer ply or cover blank at an angle to the center transverse fold, so that the excess quantity of paper heretofore-folded within the ears (thereby making them stiff and non-flexible) is eliminated, thus making them limber or flexible and easily handled by the'manufacturers packing equipment.

My invention further consists in the modified construction, combination, location and arrangement of parts and in the bag as an article of manufacture, as herein set forth and claimed. 4 2

In the drawings:

- Fig. 1 is a plan view of the bag blank for a single bag, showing a portion of the liner folded back at one corner;

Fig. 2 is a perspective view of a bag made in accordance with my invention shownin closed and sealed position;

Fig. 8 is a bottom view thereof, clearly showing the ears f inturned;

Fig. 4 is a sectional view taken on a plane corresponding to line 4-4 of Fig. 2 and, showing one of the ears of. the bag;

Fig. -,5 is a front elevation of the bag shown and the seal applied;

Fig. 6 is a front elevational View of Fig. 2, except that the ears are shown turned under in close proximity to the body of said 'Fig. 7 is a similar view to Fig. 1, partly broken away for lack of space, and showing a modified form of the invention; Fig. 8 r epresent s two long superposed strips or webs of paper of differentwidths pasted together at intervals a shorter distance from their longitudinal edges and at certainpoints or spots in the center thereof;

9 flaps 11. A coat or layer of glue paste 11 in detail, reference being made for this purpose to the accompanying drawings wherein I have illustrated a preferred formof blank from which the bag may be made, but I do not wish to be understood as limiting myself to the particular form of blank shown, as other forms or shapes may be employed without departing from the scope or spirit ofthe invention.

In the preferred-form shown, however, the duplex bag comprises an inner ply or liner 1 consisting of a thin sheet of waxed, or similar moisture-proof, paper, and an outer-ply or cover 2 consisting preferably of a heavier grade of paper having great tensile strength.

The method of makingthe bag is substantially as follows: A

A plurality'of'webs or plies of .paper 1a and 211. respectively, are drawn in registry with each other from rolls by any suitable means. Narrow layers of glue or paste 3 are applied near the respective longitudinal edges between the adjacent webs or plies of paper 1a and 2a. on side 4 of the bag blank 5. Said layers of glue preferably extend from end 6 to scored-line 7. It has been found in practice, however, that by omitting a small portion of the glue stream at 8 over the scored-line 9, thetop closure portion of the bag is more readily handled by the manufacturers packing equipment. The plies of paper are then pressed together upon said layers of paste whereby they are permanently attached together in accurate registry withk each other, as shown in Fig. 8.

The next step of the operation consists in dieing out or cutting off the longitudinal strips 20 from side 4, which strips are shown in 10. The edges of side 10 are then folded inwardly to form inturned securing.

is then applied to the exposed surface of each outer flap 11, as shown in Fig. 7. The individual bag blank 5 is then severed or cut off from the webs of paper la and 2a. The sides 4 and 10 of said bag blank are then folded transversely on central score-line 12 and the longitudinal edges of side 4 of the bag are then pressed down upon the glued faces 11 of the flaps 11 whereby the bag is completed and issued from the bag machine in a fiat form. To prevent the liner from bulging or separating from the cover at the top of the bag when the bag is opened by the manufacturers packing equipment previous to filling with the tobacco, I provide a spot or drop of glue 13 between said cover and liner, as clearly shown in Figs. 1, 8 and 10, respectively;

The inside ply or liner is permanently fastened to the outer ply or cover by this method of construction, to prevent shifting or withdrawal thereof, which is a decided advantage, particularly on account of the easy and simple manner in which it is mechanically accomplished. The plies 1a and 2a being glued together at the first step of the opera: tion are held in absolute and accurate regi try with each other during the subsequent operations, thereby preventing any shifting of the plies relative to each other, as is the case where the plies are glued together after the dieing out operation.

Two or more complete rolls of paper can a be glued together, as shown in Fig. 8', on a separate machine before making it up into bags' ready for printing and this can be done on a very simple combining and rewinding machine. In other words, the plies of paper can be unwound from separate rolls and glued together at the necessary points and then rewound upon a single roll for manufacture into bags on simple bag making machinery, such as is used for making bags of single ply material. In doing this, all that is required is to mark or cut into the paper an identifyingmark to show the register point for the dieing out knives of the bag making machine.

nomically by the use of simple, instead of complicated, machinery.

The inturned flaps of the inner and outer plys being glued together form a stronger and more substantial construction than other wise.

The chief advantage of this invention is that the dieing out knives of the bag making machine cut the longitudinal strips 20 on an angle or bias 14 from the central fold or s'core-line 12 to the score-line 15, as clearly shown in Figs. 1, 9 and 10, respectively.

A bag blank cut in this manner eliminates any excess paper from being folded within the cars 16 of the bag, when formed ready for receiving, its contents. With this construotion the ears 16 arereadily folded on lines 17 (to the position illustrated in Figs. 3.and 6, respectively) by the manufacturer's packing machines and are flexible, thereby In this way, if desired, the gluing together of the sheets (as shown in Fig. 8) could be done by one organization or rue permittin said additional covering of moisture-proo paper to be easily applied or put on after the bag has been formed, filled and closed by the manufacturers packing machinery.

While I have set forth a particular construction and method, it will be understood that this is merely by way of illustration and that the invention is capable of modification without material departure from its scope or spirit as defined in the claims, as, for instance, as shown in Fig. 7, the inner ply or liner 1 may be provided with cuts or slits 18 and 19 which will further aid in producing a bag of the character described, so that the ears 16 will not be held in open position, as shown in Fig. 2, but will readily assume a position as shown in Figs. 3 and 6, re spectively.

What I claim as new and desire to secure by Letters Patent is:

1. As an article of manufacture, a tobacco bag, the blank of which is folded intermediate its ends, one side of the blank being 7 of the wider side being inturned to form Seeurmg flaps, a score-line provided on the wider side and extending parallel with and spaced apart from said intermediate fold,

. said flaps being cut away on a line extending from said intermediate fold to said score-line and secured to the longitudinal edges of the narrow side of the blank.

3. As an article of manufacture, a tobacco bag, the blank of which is centrally folded intermediate its ends and narrower on one side of the central fold than on the other side, the wider side being provided with a transverse score-line extending parallel with and spaced apart from said central fold, the longitudinal edges of the wider side being inturned to form securing flaps, which flaps are characterized by the fact that a substantial portion thereof is cut away approximately on a line extending from said central fold to said score-line and said flaps being adhesively secured to the longitudinal edges of the narrower side of the blank.

4. As an article of manufacture, a tobacco bag, the blank of which is folded between its ends, the blank on one side of the fold being narrower than the other side, the longitudinal edges of the wider side being inturned to form securing flaps, a score-line provlded on the wider side of the blank and extending parallel with and spaced apart from said intermediate fold, the inner ends of said flaps being substantially cut away on an angle of approximately or a line extending from said intermediate fold to said score-line, said flaps being also secured to the longitudinal edges of the narrow side of the blank.

WILLIAM L. TAYLOR.

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