DE8319841U1 - Fiber drum - Google Patents

Description

Fiber drums

The innovation concerns a fiber drum with one out Kraft paper wrapped cylindrical jacket sleeve whose open ends are firmly closed on the one hand by a glued-in cardboard blank, while on the other, as a filling opening Serving end a detachable cover is placed, the edge of which is glued onto a cardboard blank overlaps the jacket sleeve.

Such fiber drums or all-fiber drums are included Water glass wrapped and then cut to size, so that a moisture-resistant container for shipping granular or pasty products. All drums have overlapping lids with different lid heights.

The bottom of the jacket sleeve, on the other hand, is formed directly from the sleeve by inserting the lower sleeve area over a stable inner plate is turned inwards. So much sleeve protrudes over the plate before the deformation, that after inserting a glued cardboard blank, an envelope of sufficient length can be formed. To deformation the use of a three-station machine is required, in which the jacket sleeve is initially adjustable in height Lower plate stands up, which works together with an outer and an inner pressure stamp. Between the two concentric Punches are radially embedded pressure lamellae in joints that form a cone when the tool is moved and when the tool moves place another tool lock in di3 horizontal setting and at right angles to the protruding Hülsenrar.d fold in towards the center of the sleeve. Before that, a glued piece of cardboard had been placed on the inner plate when flanging the jacket sleeve with the latter firmly connects. From the outside is then again in a further device Place a cardboard plaque on the outer surface of the inserted rontie and glued on the folded edge of the sleeve.

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The drum cover must be used in special devices and others Operations are produced.

A disadvantage of the drum produced in this time and cost is the involvement of the jacket sleeve in the production of the base. The transition of the jacket into the envelope, which is folded in at right angles to this, creates stability problems when several filled drums are stacked on top of one another. By the
Stacking weight, the jacket sleeve rolls up over the folded sheet of the envelope _; so that an inclined position is set through which the stacking association tips over. By redirecting the vertical stacking forces into the horizontal leg of the envelope, the jacket sleeve becomes unstable and can buckle.

In the drum manufacture, as described above, various devices for forming the bottom and the removable closure cover are used, so that an increase in the price must be accepted. In addition, the
individual pressure lamellae when the jacket envelope is folded in, pressure folds tapering radially inward, in the bottom of which the adhesive pressure is not absorbed when the cardboard blank is glued, so that a kind of capillary effect arises through which
Outside moisture can be sucked in.

The task at hand is ... to design fiber drums in such a way that stack loads are better absorbed and not at all
Curls or wrinkles occur in the jacket sleeve, and that as few devices and operations as possible are required in the drum manufacture.

These objects are achieved according to the invention in that both sleeve openings are closed by lids of the same dimensions, the ends of the jacket sleeve butt against the inner surfaces of the circular blanks of the non-detachable fastened on the sleeve
The bottom cover and the removable sealing cover.

By manufacturing two lids of the same size in
A single device for closing the two sleeve openings eliminates the folding process and thus the deflection curve in the fold. By the dull standing up

Sleeve jacket, the vertical stacking forces are directly in
diverted the plate so that no more curls occur
can. In the same way, buckling of the jacket sleeve under the stacking load is largely avoided.

In the drawing, an embodiment of the innovation is for example shown.

Show it: ,

1 shows the fiber drum in side view, partially in section;

with the closed cover and %

2 shows an enlarged section from the lower right 5

Edge of Fig. 1. ;;

The fiber drum consists of the jacket sleeve 1, which is made of \ j

Kraft paper is wrapped. The wrapping layers are with each other .i

glued and soaked with water glass. The lower end of the coat;.;

sleeve 1 is closed by the bottom cover 5, which is through.]

the edge of the plate 2 is formed, on its horizontal 4

Leg the cardboard blank 3 is glued. The outer surfaces | of round blank 3 and and the horizontal leg of the rim of the plate 2

are also covered by a glued-on round blank 4. i In the same way, the upper closure cover 6 is formed.

While the bottom cover 5 is firmly glued to the jacket sleeve 1, the closure cover 6 is releasable on the jacket sleeve 1 turned up. The lower end of the jacket sleeve 1 is; ■ butt against the cardboard blank 3. If the drum is loaded, |

the upper edge of the sleeve touches the blank 3 of the closure - yes

cover.

After the drum has been filled, the cap 6

for example with a circumferential adhesive tape on the I.

Jacket sleeve 1 are attached. ri

Claims (1)

Claim to protection Fiber drum with one wound from Kraft paper
cylindrical jacket sleeve, the open ends of which are firmly closed on the one hand by a glued-in cardboard blank, while on the other, it serves as a filling opening
At the end a detachable cover is placed, the edge of which is glued onto a cardboard tube and overlaps the jacket sleeve, characterized in that both sleeves are closed by covers (5, 6) of the same size,
the ends of the jacket sleeve (1) butt against the inner surfaces of the circular blanks (3) of the base cover (5), which is permanently attached to the sleeve (1), and of the removable closure cover (6).