US1136479A - Process for making paper boxes. - Google Patents

Description

F. 1. MOTZ.

PROCESS FOR MAKING PAPER BOXES.

APPucATloN man FEB. 29. 1912.

1 136,479, Patented Apr. 20, 1915.

INI/ENTOH THE NoRRlS PETERS C0.. PHaTv-LITHOu WASHINGTON, D, Cj

UNITED STATES PATENT OFFICE.

FREDERICK J. IvIO'lZ, OF CINCINNATI, OHIO.

PROCESS FOR MAKING- IAPER BOXES.

To all whom. it may concern:

Be it known that I, FREDERICK J. Morz, a citizen of the United States of America, and a resident of Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Processes for Making Paper Boxes, of which the following is a specification.

My invention relates to vthe manufacture 0f paper boXes and more particularly the kind known as knock-down boxes which are Vmanufactured in a fiat or folded condition,

Fig. 2 is a crosssectional view ofthe rst ply in folded condition; Fig. 3 is a view similar to Fig. 1 of the second ply of material; Fig. l is a cross-sectional view showing the folded first ply in position on the second ply; Fig. 5 is a cross-sectional view showing second -ply folded about the first ply, and Fig. 6 is an elevation of Fig. 5.

In carrying outviny improved process I take a number of rolls of material correspending to the number of plies to be ineluded in the finished product and of a proper width to form the desired cross-sectional area of bex and mount them in such a manner that the material may be withdrawn from each roll as required. The material which is to form the inner or first ply is first fed along from the rolls in a continuous sheet as indicated at 5 in TEig. l and is scored .by a suitable mechanism at the points where said material is to be bent to form the edges of the box, the scoring lines being designated as 6, `6, 6b andG:l in Fig. l. After being scored as just described, the said sheet of material is folded or bent upon itself along the scoring lines 6a and 6c until it assumes the form shown in Fig. 2 the opposite side edges of the strip being brought into engagement to form a butt joint 7. A tape or strip of material 8 is now pasted or Speccation of Letters Patent.

Patented Api'. 29, i915.

Application Vfiled February 23, 1912. Serial No. 680,745.

otherwise secured so as to cover the joint 7 and extend to either side thereof and thus fasten said side edges in proper co-relation to each other, it being understood that the strip or tape 8 is preferably very thin and light. An adhesive of any suitable kind is now applied in any convenient manner to the outer surfaces of the folded first ply -shown in Fig. 2 and the sheet 9 illustrated in Figs. 3 and i and intended for the second ply of the product is fed along and scored as at 10, 10a, 10b and l0c in the saine manner as was this first ply. If the finished product is to consist of more than two plies the both surfaces of this sheet 9 are now coated with an adhesive otherwise only the inner surface thereof is so coated or, if desired, the adhesive on the outer surfaces of the first ply may be relied on. rlhis second ply of material is now brought into contact with the folded first ply so that at this stage of the process the relative position of the second ply to the first is as illustrated in Fig. 4;, the scoring lines l0 and 10C registering with the opposite folded edges of said first ply 5. The second ply 9 is now bent along the said scoring lines l0a and 10C and folded about the folded first ply as shown in F ig. 5, the opposite side edges of said second ply 9 being also .brought together to form a butt joint ll similar to the joint 7. The scoring lines 10, 10a, 10b and l()c on the ply 9 are preferably so located and the said second ply 9 preferably so positioned relatively to the folded first ply 5 that the joints 7 and 11 in the double ply product will be located at different points or in other words in break joint arrangement. In other words the second ply is fed along somewhat to one side or out of registry with the first ply and the said second ply is scored along lines in substantial registry with the scorings of the first ply. This second joint ll is now also taped with a strip of material l2 of the same kind and in the same manner as was the oint 7. It will be seen that in this condition of the two plies 5 and 9 the scoring lines 6, 6a, 6b and 6 register with the lines 10, 10a, 10b and l0c so that the finished box may readily be unfolded or opened to its .operative condition along these lines in the usual manner this same relative arrangement being followed if more than two plies are combined together. As many more additional plies of material as may be desired may be added in the same manner to the structure so far secured until the desired thickness of product has been attained, it being understood that the butt joints of all the plies are preferably in break joint arrangement relativelyv to each other. After the desired number of plies have been combined as described the continuousfolded body passes between suitable pressing rolls to press the various plies firmly together. After passing from the pressing rolls the continuous body is fed along and cut by suitable cutting mechanism of any well-known description into lengths corresponding to the length of box desired. From thispoint the operations are Vvaried according to the particular style of box being manufactured and may be any of the well-known steps adapted to produce the particular box desired.

It will be seen that the material necessary to carry out my improved process may be secured in single sheets of any length mounted onv rolls or in any other convenient manner to be easily handled and may be placed in position to be suitably fed along and then combined to form continuous bodies of the required thickness, which bodies after being built up as described may beV cutV into any desired length, the material being continuously fed from the rolls and the various steps of the process being continuously carried on, new rolls of material being sub- A stituted as fast as the old ones are used up.

This is in contradistinction to the usual process in which the sheets are first cut into certain standard or fixed proportions andV then combined to form the required num-A ber of plies, a step usually performed at the paper mill, and after having been thus com-Y bined in this manner are sold to the box manufacturers to be formed into single boxes. It will readily be seen that with this last described'method a great deal of waste of material may result while with the process forming the subject matter of the present case this waste is practically eliminated or at vany rate is reduced to a minimum. In

addition to this all the steps of the present process are performed bythe box manufacturer and can be instantly varied to suit the requirements of any-particular case. In the present processi't is for instance easy to'V ''vary the length of the boxes, thusmaking -cure the desired result. lt is also a simple matter to increaseor diminish the number Y of plies during an operation bysimply feeding additional sheets of material or discontinuing the feeding of one or moreV sheets "i as the case may be.

A box body constructed according to the 'present process when reinforced with Vtape is stronger at the joints or seams than at any other part of the box and requires less' stock on account of the buttrjoints and the avoidance of the usual lap. By forming the joints in break joint relationto each otherV the strength of the body is further increased. The absence of the usual lap also The `finished boxes arepreferably shipped in a flat or folded condition and j are unfolded or set up inthe usual manner.

lt is, of course, to be understood that any sort ofclosure may be applied to the body, that is, either a separate closure, flaps formed integral with the body, or'any other form of cover which may be found convement: may be 11Std.y While I have shown 2;

described only the process of makingjths only the two ply box and have specifically two ply` box,fany numberof plies of material may be combined Vby `simply carrying out my process and I Wish it distinctly understood that I do not limit myself to two ply boxes or to a process Afor making two ply boxes. Y

Various changes may be made withintheY i scope of the; claims without departing from the spirit ofrmy invention. Y Y

I claim:

l. The process of making paper boxesVV whichconsists vin feeding a continuous web of material and .scoring the same lengthwise lalong lines intended to form the edges of the boxes, folding said webfiiatly upon itself along some of said scoring lines as it Y advances, withthe opposite edges of said webv engaging each other to 'form a butt joint, feeding a second web of material along out of registry with said first web,

scoringsaid second web along lines in substantial registry with the scorings of said first web, bringing' said secondV web' into surface engagement with said fiat-folded first web, folding said second web along some of Y its scoring lines into engagement with said folded first web and bringingthe edges'of said second web into abutting engagement at a distance from the butt joint of the first web, uniting said two` webs together to Vform a flat unitary body and thenV cutting said flat unitary body into the desired lengths.

2. The process of making paper boxesV which consists in feeding acontinuous web of material and scoring the samelengthwise Y along lines intended to form the edges of the boxes, folding said web iatly upon itself along some ofsaid scoring lines as it advances withthe opposite edges of said web engaging each other to forma butt joint,

applying an adhesive to the outer surfaces of said folded fiat web, feeding a second web of material along out of registry with said first web, scoring said second web "along lines Webs into a-at unitary body and cutting said flat unitary body into the desired lengths.

In testimony whereof I have hereunto set 15 my hand in the presence of two subscribing Witnesses.

FREDERICK J. MOTZ.

Witnesses:

HERBERT JACKSON, M. M. BRESNAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C.

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