US1265132A - Moldable paper-board for closures, containers, and the like. - Google Patents

Description

H. w. soKes. MOLDABLE PAPER BOARD FOR CLOSURES, CONTA|NERS,'AND THE LlKE. APPLICATION FILED NOV. I4; |917.

1,265,132. Patented May 7,1918.

UNITED sTATEs PATENT OFFICE.

HENRY w. sToEEs, or rHrLAnELrHIA, PENNSYLVANIA.

To all 'whom t may concern Be it known that I, HENRY W. STORES, a .citizen of` the United States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Moldable Paper-Board for Closures, Containers, and ithe like, of which the following is a specilication.

In the manufacture of closures, containers and the like, from ordinary smooth calendered sheets' vof paperV associated with a molding agent or compound, it is necessary or desirable to shape or bend the paperboard, consisting of the sheets and agent into the form of the'article desired, but in oing this. unintentional creases and folds are formed, ne or obvious cracks are developed and there is a tendency to return to the orlg'inal at form with consequent breaking of closure or distortion of a container or other article. are due to lack of plasticity and moldability of the paper-board, resulting from the arrangement, disposition'and condition of the bers in ordinary sheets of paper, and are present even though the ordinary sheets of paper are preliminarilynely folded, for mere folding of `not improve the arrangement, disposition or condition of thebers. Y

have discovered that Ythese serious Vdefects and disadvantages can be avoided and a paper-board of the requisite plasticity and moldability provided by using paper ber or pulp fabricated into crapepaper in which the bers are heaped, crisped or wrinkled into irregular heaps or ridges, so that the bers in these mounds, heaps or ridges are .rio

` ofcourse, takes pl 50 so free from strainy or pass with ease into any oth of them, by reason of sure, stretchink to,remain in t readily by lreason of the absence of any previous -strain or stressy on they constituent bers in the form in which they are rst enmeshed The molding actionv of the bers,

er arrangement or other molding forc, and

moldable compound or presence of some substantially lling the agent which, while interstices of the craped, heaped or rlbbed bers, thus sup orting them, ing or breakmg into other new offers no strain' reslstance to their passage positions and reassociations `Specification of Letters Patent.

These defects and disadvantages' 4 artlcles chosen from the sheets of paper does stress as to be able to'` the action of anyprest eir new association the morev ace' more readily in thev Patented May 7, l1918.

Application led November 14, 1917. Serial No. 202,066.

when the moldable compound is suitably vheated or pressed, or otherwise partially or The invention, generally stated, is embodied in a paper board for caps, closures, containers and the like, comprising the combination of a moldable` agent or compound and paper in crape form which presents the bers in heaps, mounds or ridges and imparts plasticity and moldability to the paper-board.

In the accompanying drawings, Figure 1, is an -exaggerated diagrammatic and sketchy sectional view illustrative of features of the invention.

Fig. 2, is a similar top or plan view.

Figs. 3, and 4, are views of examples of other articles which can bedmade Y.from the composition of matter, an

Figs. 5 and 6, are extremely diagrammatic views explanatory or suggestive of a rearrangement of bers during vthe molding operation of, for example, some of the parts ofthe articles shown in Figs. 3 and 4.

In the drawings 1, are thm-bers and they are arranged in the crape paper or craped sheet ber 2, in irregular mounds or ridges 3, which are not corrugations but are heaps, either `round or linear in character, of bers and not merely folds, alhoughv a heap on one side tends to make alley or depression on the other, thus irp gularly changin the distribution of bers, orv in other wor s, varyin the thickness of the sheet. In the mounds or heaps the bers ma range in various directions. 4, is a mol able compound or impregnation or sti'ening agent, varieties of which are well known, and lof which some are moldable or plastic by heat and pressure, and some by pressure alone and of which some are water-proof and others are not. By way of further explanation examples of known moldable agents or compounds are tween the various sheets.

resinous admixtures of mineral fillers, resinous and waxy compounds alone and these combinedwith mineral fillers separately.`

More than one sheet of crape paper may be and usually is employed and when this is done the sheets are superposed, as shown. In what I believe to be the best embodiment of the invention, all the sheets are of crape paper, but in some cases some of them may e crape paper and others of smooth paper. It is unnecessary to illustrate or particularly describe coatings which are frequently applied to the faces of the articles or sheets, because they may or may not be employed in articles embodying crape pa er.

Then the craped sheet fi r or paperboard is molded, for example, into the forms shown in Figs. 3 or 4, or any other forms, the moldable compound separates the fibers and when in a fluid state acts as a lubricant for theV passage or movement and redistribution of the fibers themselves. The mounds or ridges may be described as reserve supplies of fibers for utilization in any stretc ing or pulling operations applied to the paper-board in the production of the final products.

. I have endeavored to illustrate this idea in Figs. 5 and 6, in which, Fig. 5 shows (most reserve supply of bers in the form of a heap or mound, which fibers in the molding operation may adjust themselves, as shown in Fig. 6, and in the new position of Fig. 6 there is absent from the material any tendency to return to its original sheet form. In the molding operation the fibers may be straightened or they may even be heaped to a eater extentl than before. The fibers may ave been straightened diagrammatically) a to begin with and merely readjusted through the lubricating 4action of the uiditied compound. The fibers are readjusted or readapted either individually or en masse. The ridged, mounted or craped surface of the sheets provides for good adhesion with the moldable compound or agent and be- The extent to which the paper is craped depends upon the extent of the pulling or pushing to which the paper board is subjected in shaping it into the finished articles, so that if cracks or creases or a tendency to return to original form appear, as a result of any particular molding operation the heaped or ridged property should be increased, and it iswell understood that the amount of molding compound or agent employed is variable and is well understood. The change in form lfrom smooth to craped of the paper employed is no mere change of form or mere substitution of material but constitutes the essence of'the present invention, because of the unexpected or surprisin character of the results, the new mode o operation and the advance in the art. Crape paper performs the function or oiice of presenting the fibers in a manner already described in detail, and which may be summarized by saying that the fibers are distributed b v the operation involved in making crape paper not uniformly but in heaps or mounds, irregular in size, shape and disposition and operative, in connection with a fiuidity producing compound or agent, to readily assume and remain in new positions without ru ture or cracking ofy the sheet or web o paperboard, whereby practically perfect finished articles can be produced.

In attempting to descri of fibers in crape paper I do not desire to limit the invention because the latter broadly l covers the use of crape paper along with a moldable agent or compound, but my intention is to point out that thereisin, crape paper an arrangement of fibers which in connection with a moldable or stiifening agent or compound imparts to the paperboard an unexpected property of moldability and plasticity by which it can be formed into containers, caps and various articles free from cracks and capable of retaining the molded form.

What I claim is:

1. As a new article of manufacture paperboard for caps, closures. containers and the like, comprising the combination of paper in crape form and a stilening agent plastic under heat and pressure, substantially as described.

2. As a new article of manufacture paperboard for caps, closures, containers and the like, comprising the combination of paper in crape form and a stiiening agent plastic under pressure, substantially as described.

3. As a new article of manufacture paperboard for caps, closures, containers and the like, comprisin the combination of paper in crape form an a stifening agent conslsting of a resinous admixture of mineral filler plastic under heat andpressure, substantially as described.

HENRY W. STOKES.

be the arrangement

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