US3327844A

US3327844A - Cloth board and method for making same

Info

Publication number: US3327844A
Application number: US372223A
Authority: US
Inventors: Karp Norman
Original assignee: Individual
Current assignee: Individual
Priority date: 1964-06-03
Filing date: 1964-06-03
Publication date: 1967-06-27
Anticipated expiration: 1984-06-27

Description

June 27, N KARP CLOTH BOARD AND METHOD FOR MAKING SAME Filed June FIG.

FIG 5 INVENTOR.

NORMAN KARP Pea/gm, +7

FIG.6

ATTORNEYS United States Patent 3,327,844 CLOTH BOARD AND METHOD FOR MAKING SAME Norman Kai-p, 106 Lincoln Parkway, Lowell, Mass. 01851 Filed June 3, 1964, Ser. No. 372,223 7 Claims. (Cl. 206-50) This invention relates to an improved cloth board of the doubled roll reel type and an improved method for making the same.

It has heretofore been proposed to make such cloth boards of a single thickness of material, but to build up the thickness of each end by various expedients such as separate, individual end strips or by attaching a hollow end piece. For example, in U.S, Patent 1,899,195 to Heath of Feb. 28, 1933 a single ply body of solid paperboard is provided with a superposed, narrow strip at each end, secured in place to form a substantial thickness and a label is secured on the upper and lower faces of the builtup end portions.

Devices of this type are disposable and reduction of cost of manufacture together with reduction of cost of materials are of extreme importance in the art. The various devices shown in prior patents or presently in use for the purpose have certain disadvantages especially in the wastage of material in forming the parts and in the rela tively high cost of the parts. As far as I am aware, the trade presently makes much use of two superposed plies of corrugated paperboard, connected at each end by a glued, folded label, as a disposable doubled roll reel and does not make much use of other types of reel.

In this invention the principal object is to provide a reel made from a single ply of corrugated paperboard having single ply exposed side edges but having thickened ends by reason of integral, hingedly-connected, end flaps slit, but not severed, from the single plies folded back over the ends of the single ply and held in place by a layer of adhesive and preferably by other securing means. The structure of the invention thus not only eliminates the cost of a second ply of material, thereby reducing the requisite amount of board needed for each reel by at least twenty-five percent, but the end flaps are slit from the single ply itself and cannot be misjoined, disoriented or likely to slip with relation to the main body.

Another object of the invention is to provide a unitary, low cost cloth board formed from a rectangular, over length blank of corrugated paperboard having longitudinal side edge free of doubling or folds, wherein the flutes run longitudinally of a single thickness of the board and each end is thickened by at least one integral, folded end flap slit from, and overfolded onto the board and securely aflixed thereto.

A further object of the invention is to provide a method for making low cost doubled roll reels wherein a single ply, rectangular blank of corrugated paperboard 3,327,844 Patented June 27, 1967 FIG. 4 is a view similar to FIG. 3 showing the end flaps overfolded, adhered and entirely covered by the end labels.

FIG. 5 is a view similar to FIG. 2 showing an embodiment in which two end flaps are oppositely slit at each end of the board, and

FIG. 6 is .a view similar to FIG. 3 showing the board of FIG. 4, folded, adhered and covered at each end to form three plies.

A preferred embodiment of the invention is shown in FIG. 1 wherein the doubled roll reel 20 is formed of low cost corrugated paperboard material 21, in a single ply. The material 21 includes an upper liner 22, a lower liner 23 and the flutes 24, which preferably extend longitudinally of the main body 25 of the reel. In the device illustrated the corrugated material includes two sets of flutes, separated by a liner but it will be apparent that any of the conventional corrugated boards may be used, which have both upper and lower liners. As shown in the drawing the blank 27 is flat and rectangular with two opposite, longer sides and two opposite, shorter sides, or ends, the side and end edges being single ply and exposing the flutes in the usual manner of sheets cut from corrugated paperboard.

The blank 27 is several inches longer than the final product, and formed of a single ply of material 21. As shown in FIGURE 2, the first and critical step is the slitting of the blank, along lines parallel to and spaced inwardly from the

ends

28 and 29, from the outside face 31 of one liner 23 to the inside face 32 of the other liner 22. The

knives

33 and 34, or other suitable cutting or scoring device, thus form the

slit lines

35 and 36 which in turn define

fold lines

37 and 38 for the resulting

foldable end flaps

40 and 41, connected by webs of the upper liner 22 while still integral with the main body 25. In subsequent glueing, folding and covering steps control of the end flaps is not lost and the overfolded flaps are exactly positioned because of the hinge connection at the web along the

fold lines

37 and 38.

As shown in FIGURE 2 the. next step in making the reel 20 is the application of a layer of

adhesive

42 and 43 along the outer face 44 of the upper liner 22 of body 25, in the area which will be occupied by the

end flaps

40 and 41, when overfolded. Preferably the adhesive 42 and 43 is of the hot melt type, such as Thermogrip, a product of United Shoe Machinery Corp. of Beverly, Massachusetts, and may be applied by any suitable adhesive applying means as the slit blanks 27 are advanced along the paper line of a folding and glueing machine of conventional type.

The

end flaps

40 and 41 are then overfolded through an angle of 180 on the

fold line

37 or 38 into superposed position overlying the adjacent portion of the face 44 and is transversely slit at each end to form foldable end flaps, I

the flaps are overfolded to form multi ply ends on the board and the flaps are secured in place by means such as a hot melt adhesive and then at least partially covered by a foldable end label.

Other objects and advantages of the invention will be apparent from the claims, the description of the drawing and from the drawing in which:

- FIG. l is a perspective view of a doubled roll reel constructed in accordance with the invention.

FIG. 2 is a side elevation showing the step of slitting a single ply of corrugated board to form foldable, hingedly connected end flaps.

'FIG.' 3 is a view similar to FIG. 2 showing the end flaps overfolded, adhered and partially covered by the end labels.

overlying the

adhesive strips

42 or 43, so that ends=of double thickness are formed. When the

end flaps

40 and 41 are overfolded, the cut flutes and liners along the

slit liner

35 and 36 are exposed. The

adhesive

42 and 43 secures the flaps in folded position while the blanks 27 are advanced along the paper line of a folding machine and until the final step of applying the

end covering labels

46 and 47 is completed.

As shown in FIGURE 3, each end label such as 46 is formed of foldable paper, sheet material such as cardboard 48, precreased along

lines

50 and 51 to fit over the ends of the reels. Staples 49, rivets or'similar means, may be used to hold the end labels 46 in place.

As shown in FIGURE 4 end labels47 are formed of thin, low cost, foldable sheet material such as cardboard 48, pre-creased along

lines

50, 51, 52, and 53 to snugly fit over, and cover the exposed, slit, flutes and double ply ends of the reel. The entire inner face 54 of each

label

46 or 47 may be covered with a layer of adhesive so that the panels of the labels, defined by the crease lines will adhere to the :corresponding faces of the corrugated board.

However the terminal ends 55 and 56 of the label 47 extend inwardly along the main body 25 and are adhered by a layer of adhesive at 57 and 58 to the

faces

44 and 31 .to not only cover the ends but also to keep the flaps overopposite end, by

knives

63 and 64 from opposite directions, to form

end flaps

65 and 66, corresponding to the

flaps

40 and 41, and an

additional end flap

67 or 68 at each end of the reel.

Two layers of

hot melt adhesive

69 and 70 are applied as shown, and the two end flaps such as 65 and 68 at each end are folded as shown on their

integral webs

72 and 73 to form multi ply ends of triple thickness. Each precreased end label, such as 74, has its

terminal ends

76 and 77 adhered to the main body 78 of the resulting reel 80 in the same manner as described above.

I claim:

1. A cloth winding board of the doubled roll reel type, said board comprising:

an elongated, single ply rectangular strip of corrugated paperboard having a pair of opposite, longer, single ply, sides, free of doubling and folds, a pair of opposite, shorter ends, said paperboard including an upper liner and a lower liner, and flutes extending longitudinally from end to end thereof, in parallelism with said longer sides;

said strip being slit along lines parallel to, and equally spaced inwardly from said ends, and said slits extending from the outer face of one said liner to the inner face of the other said liner to define a pair of integral, hingedly-connected, slit; end flaps;

said endflaps being overfolded along the line of said slits to overlie said strip and form relatively thick ends thereon, with the slit lines of said strip exposed;

a layer of adhesive bonding each said flap to the adjaoent face of said strip;

a pair of pre-creased, paper labels, each folded around one of said relatively thick ends and at least partially covering the same while entirely covering said exposed slit lines;

and means aflixing said labels in said position on said ends.

2. A cloth winding board as specified in claim 1 wherein:

each said label includes oppositely disposed, terminal portions each overlying andengaging one of said liners inwardly from the adjacent relatively thick ends;

adhesive means adhesively securing said terminal portions to said liners.

3. An improved doubled roll reel comprising:

, an elongated, rectangular, single ply body of fluted corrugated paperboard, said body having two opposite longer sides with single ply edges free of folds and two opposite shorter ends, said body being partially slit along lines parallel to, and spaced inwardly from, each said opposite end thereof to define a pair of oppositely disposed, hingedly-connected end flaps;

said end flaps being overfolded on said lines to form a double ply at each end of said single ply body;

a pre-creased paper end label at least partially cove-ring each said double ply end; and

means securing said labels and flaps to said single ply body,

' 4. An improved doubled roll reel comprising:

a single ply rectangular blank of corrugated paperboard having opposite longitudinal edges, free of folds, flutes extending in parallelism with said longitudinal edges and opposite lateral edges;

said rectangularblank being slit laterally proximate each opposite lateral edge thereof to divide said blank into a single ply main body and at least one hingedly connected, integral end flap folded back into superposed position on said body at each opposite end thereof to form multi ply ends thereon;

a layer of adhesive bonding the said multi plies to each other and to said body;and

a pre-creased paper label folded over each said multi ply end and covering the same, the terminal portions of said label being adhered to the opposite faces of said single ply main body.

5. The method of making a doubled roll reel frorn a single ply of corrugated paperboard which comprises the steps of:

forming a flat rectangular blank from said corrugated paperboard with a pair of opposite shorter ends and a pair of opposite longer sides of greater length than desired, the side and end edges of said blank being free of folds and exposing the flutes of said paperboard;

slitting said black along transverse lines proximate, and parallel to, each opposite end from the outside face of one liner to the inside face of the other liner to form a single ply main body of the desired length with a pair of integral, opposite hingedly connected, foldable end flaps;

then applying a layer of adhesive to said board in position to adhere said flaps in overfolded position; and

then overfolding said end flaps through an angle of into adhered position overlying said main body to form multi ply, integral ends thereon.

6. A method as specified in claim 5, plus the step of:

pre-creasing a pair of end labels to each define a plurality of panels adapted to overlie one of the said multi ply integral ends of said reel; and

securing one said end label over each opposite multi ply end of said board to at least partially cover the same.

7.. A cloth winding board of the doubled roll reel type comprising:

an elongated, single strip of corrugated paperboard including an upper liner and a lower liner, and flutes extending longitudinally from end to end thereof;

said strip being slit along two parallel lines at each said end,- said two slits being each from an opposite direction and each slit extending from the outer face of one said liner to the inner face of the other said liner, to define a pair of integral, hingedly-connected, end flaps .at each end of said strip;

the inner end flap at each end being overfolded along the line of the inner slit to overlie said strip and the outer end flap at each end being overfolded along the line of the outer slit to overlie said inner flap to thereby form relatively thick ends of triple thickness on said strip;

a layer of adhesive bonding each said overfolded outer flap to the adjacent inner flap and a layer of adhesive bonding each said inner flap to the adjacent face of said strip;

a pair of labels each folded around one of said ends of triple thickness and at least partially covering the same; and

means aflixing said labels in said position on said ends.

References Cited UNITED STATES PATENTS LOUIS G, MANCENE, Primary Examiner.

Claims

1. A CLOTH WINDING BOARD OF THE DOUBLED ROLL REEL TYPE, SAID BOARD COMPRISING: AN ELONGATED, SINGLE PLY RECTANGULAR STRIP OF CORRUGATED PAPERBOARD HAVING A PAIR OF OPPOSITE, LONGER, SINGLE PLY, SIDES, FREE OF DOUBLING AND FOLDS, A PAIR OF OPPOSITE, SHORTER ENDS, SAID PAPERBOARD INCLUDING AN UPPER LINER AND A LOWER LINER, AND FLUTES EXTENDING LONGITUDINALLY FROM END TO END THEREOF, IN PARALLELISM WITH SAID LONGER SIDES; SAID STRIP BEING SLIT ALONG LINES PARALLEL TO, AND EQUALLY SPACED INWARDLY FROM SAID ENDS, AND SAID SLITS EXTENDING FROM THE OUTER FACE OF ONE SAID LINER TO THE INNER FACE OF THE OTHER SAID LINER TO DEFINE A PAIR OF INTEGRAL, HINGEDLY-CONNECTED, SLIT; END FLAPS; SAID END FLAPS BEING OVERFOLDED ALONG THE LINE OF SAID SLITS TO OVERLIE SAID STRIP AND FORM RELATIVELY THICK ENDS THEREON, WITH THE SLIT LINES OF SAID STRIP EXPOSED; A LAYER OF ADHESIVE BONDING EACH SAID FLAP TO THE ADJACENT FACE OF SAID STRIP; A PAIR OF PRE-CREASED, PAPER LABELS, EACH FOLDED AROUND ONE OF SAID RELATIVELY THICK ENDS AND AT LEAST PARTIALLY COVERING THE SAME WHILE ENTIRELY COVERING SAID EXPOSED SLIT LINES; AND MEANS AFFIXING SAID LABELS IN SAID POSITION ON SAID ENDS.