US3544419A

US3544419A - Paper lamination system

Info

Publication number: US3544419A
Authority: US
Inventors: George Gerard
Original assignee: Jiffy Manufacturing Co
Current assignee: JIFFY PACKAGING CORP
Priority date: 1968-01-26
Filing date: 1968-01-26
Publication date: 1970-12-01
Anticipated expiration: 1987-12-01

Description

Dec. 1, 1970 G. GERARD 3,544,419

. PAPER LAMINATION SYSTEM Filed Jan. 26, 1968 2 Sheets-Sheet 1 INVENTOR. oeonoe GERARD ATTORNEY Dec. 1; 1970 cs. GERARD PAPER LAMINATION SYSTEM 2 Sheets-Sheet 2 Filed Jan. 26, 1968 5 G I F FIG. 7

INVENTOR. GEORGE GERARD Bywfiw ATTORNEY United States Patent US. Cl. 161111 8 Claims ABSTRACT OF THE DISCLOSURE The present invention relates to obtaining a multilayer of laminated paper packaging material in which a plurality of sheets of a relatively coarse, slightly calendered or uncalendered thin embossed kraft paper are attached together by means of piercing and disturbing the fibers of the paper, which causes the fibers of adjacent sheets to interlock under high pressure. This is quite different from embossing, which does not cause an interlocking of fibers of adjacent sheets of paper.

With this pinning or piercing, which causes this interlocking, the sheets may be simultaneously embossed with varying directed patterns extending longitudinally and transversely and also obliquely or diagonally in respect to the longitudinal axis of the sheet of paper. These sheets are desirably arranged in a series of continuous areas, either triangular, hexagonal or octagonal or preferably square rectangular, positioned side by side over the entire area of the paper sheets. The piercing or interlocking of the fibers may be accomplished along the edges of the sheets or at various spaced intervals across the surface of the sheets and even within the various embossed areas. The areas are desirably so embossed that in one area will be rows of mounds and recesses parallel with the longitudinal axis of the paper and in adjacent squares or areas will be diagonally arranged rows of mounds and recesses.

SUMMARY OF THE INVENTION It is among the objects of the present invention to provide a novel paper processing system in which a plurality of superimposed sheets of paper may be processed so as to enhance their bulk in volume and then be fixed in a laminated structure to permit ready use thereof for packaging or protective purposes.

Another object is to provide a system of laminating and achieving paper packaging and protective material through which a plurality of sheets of paper or similar matted fibrous materials may be processed at a relatively low cost with minimum manual labor to produce a voluminous lightweight packaging material which can be used widely for wrapping, enclosing or protecting furniture, books, crockery or other objects which may be injured or damaged.

A further object is to provide a novel packaging material consisting of a plurality of superimposed sheets of paper or similar matted fibrous material of light weight yet of great bulk, which will not be subject to lateral displacement or of nesting or lodgment with one another and which will adequately protect material subject to scuffing and scoring and particularly furniture, books, crockery and the like.

Still further objects and advantages will appear in the more detailed description set forth below, it being understood, however, that this more detailed description is given by way of illustration and explanation only and not by way of limitation, since various changes therein may be made by those skilled in the art without departing from the scope and spirit of the present invention.

In accomplishing the above objects according to one preferred embodiment of the present invention a plurality Patented Dec. 1, 1970 of sheets of lightweight, porous, slightly calendered or uncalendered paper or similar matted materials are fed between matching embossing rolls to give a continuous series of embossments or enlargements and adjacent recesses which will extend in different directions over the surface of the paper so as to prevent nesting thereof.

Desirably the areas of the various directed rows of embossments and recesses will extend partly in parallelism and transverse to the direction of movement of the paper and partly obliquely to the direction of movement of the paper, said obliquity being 30 or 60 but preferably The embossments generally are provided by impressing the sheets of material so as to form frusto-conical portions which project both upwardly and downwardly with rounded ends and with the sides being at an angle to the plane of the paper of between 30 and 60 and desirably at 45. The paper sheets after being embossed are then caused to be displaced in respect to one another. There may be between two or three up to fourteen or fifteen paper sheets embossed simultaneously following which the sheets are caused to be offset from one another and then again assembled with a light pressure and then they are pinned or subjected to a pinning operation.

In the pinning operation matching rolls or pins are provided which will cause indentations of the order of less than and desirably of the order of to with the sharp point of the indentation causing interengagement of the superimposed paper sheets.

These indentations may take place at local areas in the middle or at the periphery of the rows of embossments or mounds and recesses and cause the sheets to be pressed together and firmly engage with one another so that there will be a direct connection and uniting or integration of the matted fibers of the paper stock. The same effect may be achieved by running a pinning roller along the assembled edges of the paper sheets so as to cause engagement and locking together of the fibers of the superimposed paper sheets to achieve a locking elfect.

Desirably the rows of embossments and recesses are arranged in 1" to 3" areas in Width or length which are either square or rectangular and which extend over the entire surface of the area of the paper sheets. Each area of longitudinal and transverse embossments is bordered by an area of diagonal or oblique rows of mounds or embossments.

In the offsetting operation the sheets are desirably olfset by causing them to press over idler rollers at greater or lesser distances from the direction paths of travel with the result that the embossments and mounds will be so offset that the mounds of one sheet Will contact the top of the mounds of the next adjacent sheet without any likelihood of nesting or coincidence of the various recesses and mounds and with maximum bulk being achieved.

Desirably the inside faces of these laminated or superimposed sheets may be provided with sheets of smooth highly calendered kraft paper or with tissue sheets ranging from two to six or more so as to prevent the coarse, rough basic sheets from abrading or scoring the finish of the furniture or the cover of the book or causing other damage.

Although varying sizes and shapes and patterns may be employed it has been found most satisfactory to form the areas so that they will each occupy 1 to 3" in width and/ or length with the mounds and recesses each having a diameter of about up to the maximum of and desirably between A and with the spacing of the rows varying in the same amount.

Although the rows in the oblique portions may be at varying angles of 30, 45 or they are desirably at 45 and at the junction between the areas the embossments or recesses will smoothly flow into one another.

At points in or adjacent to the peripheries of the areas 3 or along the edges of the areas there are provided pinnings in which the paper is subjected to pinning tools which will cause engagement of the laminations with one another and prevent ofisetting thereof once the laminations have been gathered together.

The mounds and recesses are generally ofiset so that they will not match or nest and so that the mounds will rest on one another and give substantially increased height and thickness to the superimposed sheets. These sheets are used for packing or protecting furniture, books, crockery and the like in shipment, merchandising, handling, storage, etc.

DESCRIPTION OF THE DRAWINGS With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described, and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be restortedto which fall within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views:

FIG. 1 is a side, diagrammatic elevational view illustrating the embossment, offsetting and pinning of the paper sheets.

FIG. 2 is a fragmentary, perspective view of a pinning element.

FIG. 3 is a fragmentary, top plan view partly broken away, of the embossed, pinned paper sheets showing the offsetting thereof.

FIG. 4 is a transverse sectional view upon the line 4-4 of FIG. 3 upon an enlarged scale as compared to FIG. 3.

FIG. 5 is a side perspective view of a pinning roller which may be used for achieving continuous pinning efiect along the periphery of the superimposed sheets.

FIG. 6 is a fragmentary top plan view of the superimposed sheets partly broken away to show the under sheets indicating the offsetting thereof.

FIG. 7 is a transverse sectional view upon the line 7-7 of FIG. 6.

FIG. 8 is an enlarged transverse sectional view, showing the effect of the interlocking achieved by the piercing or pinning.

DESCRIPTION OF PREFERRED EMBODIMENT Referring to FIG. 1 there is shown a series of rolls A of paper stock B which may consist of a coarse, rough surfaced slightly calendered or uncalendered kraft paper or other matted materials. These sheets are then brought together between embossing rolls C which have matching male and female faces and these embossing rolls carry patterns of rows of mounds and recesses arranged at angles to one another and desirably in areas which may be square or rectangular over the entire surface of the paper.

The embossed sheets D are then passed over the offsetting idler rollers E which will cause the embossments to become offset from one another so that there will be no likelihood of their nesting or engagement with one another and so that maximum bulk may be achieved.

The sheets are then assembled and pressed together between the assembly rolls F with a pressure of the order of 500 to 3000 pounds per square inch. This pressure is for the purpose of securing engagement between the rough fiber surface of the engaging or contacting paper sheets. These paper sheets may desirably be of a varying thickness from .01" to .0 with the tissue paper facing sheets or smooth facing sheets having about onehalf this thickness. These sheets willthen pass between the pinning rolls G and H and then, if desired, between the marginal pinning elements or structures J and K.

The final superimposed, laminated, embossed and pinned multiple sheet L as shown in FIGS. 3 and 4 will be desirably offset so that the oblique rows M will be over or under diagonal rows N. The pinned portions P may be centrally located in the areas or be at the borders Q between the areas. As shown in FIG. 4 the pinned areas consist of a series of sharp triangular depressions R with the corners S having their fibers penetrating adjacent sheets.

In respect to the use of the rollers E, by causing the sheets to travel difierent distances between the embossing rollers C and the assembling rollers F, the embossments will be olfset as indicated in FIGS. 3 and 4 and a maximum enlargement of the material without increase in weight will be achieved, as indicated at T in FIG. 4. At the same time, the mounds U will contact and rest on one another, leaving the open spaces V which will give a protective action of the superimposed sheets.

In FIGS. 5 to 7 the serrated roller I will form the continuous serrations W along the periphery or margin of the sheets, as shown in FIG. 6 or 7, which will result in permanent engagement and integration of the sheets along the pinning band W on each side of the packing thickness T. At the same time there will be pinned to the main coarse sheets D, smooth facing sheets X or tissue sheets X, or acombination of both, which will prevent scuffing of the furniture or other fragile objects which may be packaged or enclosed in the combined sheets as shown in FIGS. 4 and 7.

Generally the offsetting is caused to result in a series of contacts as indicated at U in FIGS. 4 and 7 in which the mounds contact each other at their peaks or along their conical side edges. It has been found that these superimposed sheets will give maximum protection to the furniture or other surfaces which may be covered thereby.

Referring to FIG. 8 there is shown the effect of the pinning or piercing which is accomplished by means of the pinning rollers G and H and the pinning wheel J. This causes an actual piercing and disturbance of the fibers of the paper, causing the fibers of one layer to extend into and to look into the surface or fibers of the adjacent layer under high pressure. These pins act to pierce and disturb and cause this penetration of fibers into adjacent layers and this is not accomplished by any embossing operation. It will be noted at the apex of the points that the fibers extend into the adjacent layers, causing this interlocking effect.

It is thus apparent that the applicant has provided a novel pinned, embossed packing structure which may be utilized for wrapping fragile objects or the protection of finished faces or in various places where insulation 01' protection is desired from a plurality of sheets of embossed, pinned, coarse paper stock.

While there has been herein described a preferred form of the invention, it should be understood that the same may be altered in details and in relative arrangement of parts within the scope of the appended claims.

Having now particularly described and ascertained the nature of the invention, and in what manner the same is to be performed, what is claimed is:

1. A superimposed laminated embossed multisheet packaging and wrapping material having a longitudinal axis, useful for packaging, wrapping and enclosing furniture, books, crockery and the like, comprising a series of superimposed pierced paper sheets, said pierced paper sheets having fibers extending into one another so that the adjacent sheets will be interlocked together at the places of piercing, said paper sheets also having a plurality of closely spaced rows of closely spaced superimposed non-nesting embossments, said embossments being formed of longitudinally and obliquely arranged rows of mounds and recesses arranged in adjuxtaposed areas offset in respect to each other so that the mounds will be in contact with each other at their peaks and whereas the pierced portions are engaged by reason of the interlodgment of the fibers thereof, so as to form a permanent fibrous connection and integration of said sheets at spaced areas over the width and length within said adjuxtaposed areas and the contacting mounds being adhered together by glue.

2. The wrapping material of claim 1, said pin portions formed by penetration of the triangular points being positioned in the center of the adjuxtaposed areas.

3. The wrapping material of claim 1, in which the paper sheeets are of relatively coarse, thin kraft paper.

4. The wrapping material of claim 1, said rows being arranged in areas having the form of squares or rectangles and each adjacent rectangle having the rows arranged in a different direction, one direction being longitudinal and lateral of the material and the other being diagonal of the material in respect to the longitudinal axis, and said pierced portions being arranged in circular areas at the center of the square or rectangular areas.

5. The wrapping material of claim 1, said adjuxtaposed areas occupying one inch to three inches in width and length and the mounds and recesses each having a diameter of about A; inch maximum and inch minimum.

6. The wrapping material of claim 1, the inside faces of said material having a matted fibrous liner of light References Cited UNITED STATES PATENTS 1,771,983 7/1930 Wandel 161-111 2,106,246 1/1938 Fourness 161-130 2,200,171 5/1940 Hermanson 161-130 2,288,170 6/1942 Moeller 161-130 HAROLD ANSHER, Primary Examiner W.E. HOAG, Assistant Examiner US. Cl. X.R.