US1632521A - Multiplex bag and the method of making it - Google Patents

Description

3 Sheets-Sheet l PAPER COVER Filed Nov. 21, 1925 MULTIPLEX BAG AND was METHOD OF MAKING IT June 14 927- INVENTOR;

' ill iam LTgy ler.

QTTORNEY.

June 14 1927.

.w'. L. TAYLOR MULTIPLEX BAG AND THE METHODOF MAKING IT Filed Nov. 21. 1925 s Sheets-Sheet 2 INVENTOR.

7 William L. Tsi l TTORNEY.

June 14. 1927.

TAYLOR uupnmsx BAG AND THE METHOD or MAKING IT 3 Sheets-Sheet 3 Filed Nov.

INVENTOR.

ATTORNEY.

.Wi11ia m L- Tag/i 21" II J Patented June: 14, 1927.

UNITED STATES PATENT o F ic-s.

WILLIAM L. '1AYLOB,

or cm cr'mm'rr, onIo.

uumrrrsx BAG AND-THE nm'rrxon or MAKING rr.

Application filed November 21, 1925. Serial m. 70,592.

bag whereby heavier plies ofmaterial may be used without undesirable stiffness in'the sides of the bag when shaping it for receiving the contents and also when making the closure at the top after the contents are filled in.' l r Other objects and advantages are obtained as herein set forth.

strips of paper of different widths and gluing them together at intervals a short distance away whereby said plies are held in absolute regeach other during all subsequent operations, then dieing out the individual hag blanks from said longitudinal strips whereby the narrow side of each ply will be of the same dimension and whereby the longitudinal edges of'said narrow side will be glued together. I

My invention also consists in the various steps required to form the completed bag, and in the bag as an article of manufacture.

In the drawings 1 Fig. 1 isa view of the outer ply or cover istry with of a bag blank;

ed bag;

7 is a transverse section on the hue- Fig. 2 is a view of the inner ply or liner of the bag blank;

Fig. 3 is a view of the'inner and outer plies of the bag blank glued together along the longitudinal edges of the narrow side;

Fig. .4 is an isometric view of the bag blank shown in Fig. 3 after the longitudinal fiaps of the wider side have been folded inwardly' and coated with glue on their exposed surfaces with the narrower sidepartly folded into position;

Fi 5 is a top view of the open end of the ag/ showing the sides glued together along their longitudinal edges;

Fig. 6 is an isometric view of the complet- Fig. 7-7 ,of Fig. 4;

Fig. 8 is a transverse section on the line 8-8 of Fig. 4; I

and

My invention consists in taking two long from their longitudinal edges.

Fig. 9 represents two long superposed strips of paper of different widths pasted together at intervals a short distance from their longitudinal edges;

- Fig. 10 isa similar viewshowing by dot dash lines the-parts cutaway in formingthe individual bag blanks; and

Fig. 11 is a view similar to Fig. 10, showing one of the bag blanks detached and the discarded or waste parts cut away.

The preferred ,meth d of making accordance with my invention consists in taking long tance from, their longitudinal that when the individual bag blanksare died out from this multiply (strip of paper. the.

plies of the narrow side'of the bag blank along its longitudinal edges will be securely, I

the bands of glue and the held in registry by outer or cover ply of the wider side fiwill'be narrower than the inner.ply or liner, as

shown in Figs. 3 and 11.

The cover or outer ply 4 is formed of narrow side 5 and wider side 6 with securing bags in strips of paper 1 and 2 in rolls of different widths and by suitable means securing them together at intervals a short. disedges by narrow bands of glue 3, as shown in Fig. 9, so

row side 9 and wider side 10 having secur its longitudinal edges and adapted to be fo ded inwardly to the width of the narrow side, as indicated by the dot ted lines. The liner, as shown in Fig. 2, is of the same shape as the cover shown in Fig. 1, except that the flaps 11 of the liner are wider than the flaps 7 of the cover.

As previously stated, the longstrips of paper are secured together at intervals by bands of glue or other adhesive material, as shown in Fig. 9, so that when each bag blank .is died out from said band it will gomprise the two ply b1ank,'as illustrated in igs. extends along each longitudinal edge of the narrow side only of the bag.

The bands of adhesive material 3which bind the strips of paper together at intervals are preferably formed sufficientlywide so that when the bag blanks are died out the die cuts through and removes a small art of theadhesive material in order to insure complete adhesion of the plies along their longitudinal edges, as clearly shown at X in Figs. 10 and 11.

ing flaps. 11 alon 3 and 11, in which the glue band 3' The next step consists in folding the flaps 7 and 11 inwardly, as shown in Fig. 8, then applying glue 12 thereto, as shown inFig. 4, and then folding the narrow side of the bag blank thereon to form the completed bag, as shown in Figs. 5 and 6.

An important advantage of my invention consists in securing registration of the respective plies of material from side to side by gluing them together in such relationship at-interva-ls before dieing out the individual bag blanks, as shown in Fig. 11. This insures proper registration of the superposed strips or webstduring all subsequent operations, including the gluing of the securing flaps and folding and gluing the bag sides together. It also insures registration of the Strips of paper when being folded in a single set of formers. It has the advantage of re quiring only one set of dieing out and cutting cylinders and one waste exhaust system to receive the waste material cut away. It permits the use of simplified mechanism, making more speedy and eflicient adjustment of the machine; has the advantage of a greater quantity of paper in dieing out moisture-proof and insulated papers, such as are combined with asphalt, that is to say, the greater the thickness of the paper in relation to the quantity of asphalt, the greater cleaning effect it will have upon the knives of the dieing-out mechanism. As too limited a quantity of asphalt does not give moisture-proof quality it is highly desirable to fabricate materials for use in bags in such a manner as will allow a maximum quantity of asphalt with eflicient operation.

Gluing the narrow sides of the blanks together. along their longitudinal edges will not allow displacement of the liner in subsequent packing operations. Gluin the blanks together only on the narrow si e and not gluing the inturned flaps together but merely gluing the narrow side of the blank to the inturned flaps allows the liner to float freer into position when the bag is being packed with material such as tobacco, and

gives greater pliability to the bag by being so glued, so that it is possible to use heavier plies of paper or other material and not have undesirable stiffness in the side of the bag when shaping it for receiving the contents and also whenmaking the closure at the top, after the contents are filled in. Blanks glued together in this manner can be gripped more positively in the delivery mechanism of the bag machine, especially when a paraffin liner is used as one ply thereof, the coating of paraffin havin a tendency to compress under the gripper in and making it more ditficult to hold and de liver. The liner being glued into position will insure greater accuracy in the final fold when pressure must be exerted on the pointwhere the bag is glued together. This will avoid, in a large measure, an undesirable bias fold if the pressure on the delivery mechanism is not accurate or uniform.

While I have set forth a particular construction and method of making the bags, it will be understood that it is capable of modification without departure from the scope or spirit of the invention, as defined in the claims, as for instance. a larger number of plies than two may be employed. if desired.

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

1. The herein described method of forming a multiplex bag which consists inv taking strips of paper of different widths and securing them together with bands of adresive material at intervals in spaced apart relation from their edges, then dieing out the individual bag blanks from said multiply strip, cutting through the adhesive material and discarding part thereof and forming one side of the bag narrower than the other side thereof, then folding the edges of each ply of the wider side inwardly to form securing flaps, then coating theexposed surface of said securing flaps with adhesive material and then compressing the narrower side against said adhesive material whereby the completed bag is formed.-

2. The herein described method of forming a multiplex bag which consists in gluing together superposed strips of paper of different widths at spaced apart intervals near their longitudinal edges to form a multilply strip, then dieing out from said multip y strip individual bag blanks each having one side wider than the other side and one side of the lining wider than the adjacent cover whereby securing flaps are provided, then folding said securing flaps inwardly, then gluing the exposed surface thereof, then folding said blank transversely and pressing the sides of the bag together upon the glued flaps to form the completed hag.

WILLIAM L. TAYLOR.

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