JP3151911U - Fiber drum - Google Patents

Abstract

Provided is a fiber drum in which the bottom surface of the drum is not destroyed during handling of the fiber drum, and the drum material can be easily separated into a metal member and a paper member at the time of disposal after use of the drum. A bottom portion of a paper tubular body is bent inward to form a bent portion, and a bottom plate made of a paper surface material is integrally bonded to the bent portion by adhesive bonding. In the fiber drum formed by sealing the lower surface of the main body, the bottom reinforcing plate 8 having a slightly larger diameter than the bottom plate 2 of the drum is tightened and held in a coupled state by a detachable lock band 7 with respect to the bottom plate 2. Reinforce the drum bottom. [Selection] Figure 5

Description

  The present invention relates to a fiber drum that can be used as, for example, a paper container for transporting liquid food or the like, and more particularly to a separation type fiber drum that reinforces the bottom of the drum and is easy to recycle.

The fiber drum is a paper cylindrical container formed by laminating a plurality of kraft papers. In this container, a disk-shaped bottom plate is integrally joined to the lower surface of a paper cylindrical body part constituting the container body, and a lid for closing the upper end opening of the body part is attached. Widely used as a container for transporting various resin powders, liquids and the like (see, for example, Patent Documents 1 and 2 below).
These fiber drums are broadly divided into “all fiber drums” that do not use metal at all and “fiber drums” that use metal for the lid, clasp, and part of the trunk.
“Fiber drum” has no standardized standard like JIS. However, according to the standards of Honshu Reem Co., which is influential in the industry, the former is named F-type, L-type, R-type, etc. according to type and application, and the latter is named X-type.

As shown in Patent Document 2, the all-fiber drum is made of paper because the body and bottom are all made of paper, so it is easy to post-process such as incineration and disposal. It can be recycled (recycled) as waste paper.
On the other hand, as shown in FIGS. 3 and 4 of Patent Document 3, a paper body and a metal lid that closes the end of the body, and upper and lower ends of the body are caulked with metal reinforcing rings. For molded products, dismantling and disposal after use are very troublesome. That is, when discarding the fiber drum, the drum body must be cut off and disassembled to separate paper and metal to recycle the end retainer ring, lid lock ring and metal lid. Their decomposition is very difficult.

An example of a fiber drum that can be easily separated and easily recycled is disclosed in Patent Document 4. This fiber drum is fitted with a steel or resin top cover and bottom cover that are pressed into a paper body, fitted with a ring-shaped band on the outside, and the peripheral edge of the cover and the drum body are attached to it. Each lid is fixed to the drum body by tightening with a band.
Since this drum can release the clamp of the band, the upper lid and lower lid can be separated from the trunk, so the trunk body made only of paper and the lid and band formed of steel or resin can be easily separated. It has the advantage that it is easy to separate and collect paper and metal.

JP 2007-22564 A JP 2003-246313 A JP 2004-182268 A (FIGS. 3 and 4) Japanese Patent Laid-Open No. 7-61438

  As described above, the fiber drum shown in Patent Document 4 has an upper lid and a lower lid fitted into a paper body and is fixed from the outside using a fastening band. Therefore, separation of each material is easy at the time of recycling. However, when used as a container for heavy objects such as liquids and powders, the lower lid is not integrally joined to the trunk body, so if a large weight is applied, the lower lid is easily removed, and the bottom strength during handling is sufficient. I can't say that. Further, since the lower lid is made of metal and not made of paper, it cannot be said that it is satisfactory in terms of weight reduction of the drum.

  Further, for example, a fiber drum formed by bending the lower edge portion of a paper body as shown in FIG. 3 of the present specification at a right angle inward and integrally joining a disk-shaped bottom plate made of paper with an adhesive. In this case, it has been reported that when a heavy object is put in the drum and handled, the bottom part is easily broken and deformed. That is, when a fiber drum containing a liquid or powder in a synthetic resin bag inside is placed on a pallet and transported to a factory or the like as shown in FIG. When the drum is dropped from the pallet or moved while rotating the drum as shown in FIG. 8, there is a problem that an excessive load is applied to the bottom and the drum bottom is broken.

  The present invention pays attention to the above-mentioned problems of the conventional one, and in the fiber drum in which the paper bottom is integrally joined to the paper body by bonding, the bottom of the drum is made of paper or plywood to strengthen the bottom. By holding the plate with a detachable lock band, the bottom surface of the drum is not destroyed, and the drum material can be easily separated into a metal member and a paper member when discarded after using the fiber drum. An object is to provide a fiber drum that can be used.

In order to achieve the above object, the solution proposed by the present invention is as follows.
(1) The device according to claim 1 is formed by bending the periphery of the lower end portion of the paper tubular body inward to form a bent portion, and a bottom plate made of a paper surface material is glued on the bent portion. In the fiber drum formed by integrally joining and sealing the lower surface of the main body,
The drum bottom portion is reinforced by tightening and holding a bottom reinforcing plate having a diameter slightly larger than the bottom plate of the drum in a coupled state by a reinforcing lock band that can be attached to and detached from the bottom plate.
(2) The invention according to claim 2 is characterized in that the bottom reinforcing plate of the fiber drum is made of reinforced corrugated cardboard composed of two or more layers of corrugated cardboard.
(3) The invention according to claim 3 is characterized in that the bottom reinforcing plate of the fiber drum is made of wood or fiber material such as plywood or fiberboard other than metal.
(4) In the invention according to claim 4, the reinforcing lock band for attaching the bottom reinforcing plate to the bottom plate is formed in an annular shape having a circumferential length that can be wound from the outside of the paper tubular main body. And a lever-type tightening means that can be unlocked at the end of the band.

  The fiber drum of the present invention has a body and a bottom plate made of paper, and the bottom plate is only reinforced with corrugated cardboard, plywood or fiber board other than metal, so it is lightweight and has heavy weight such as liquid or powder inside. The drum does not bottom out when it is used, and when discarding after using the fiber drum, all of the fiber drum body and upper and lower lid parts are easily separated into metal members and paper members. There are advantages that can be made.

It is a perspective view showing the fiber drum main body concerning this invention. It is a disassembled perspective view which shows the structure of the lower part of the trunk | drum main body 1 of a fiber drum. It is explanatory drawing similarly. It is explanatory drawing which simplified and showed the bottom part structure of the improved fiber drum of this invention. (A) is explanatory drawing attached so that it might not slip down from the bottom part of the drum main body 1 by reducing the diameter of a band. (B) is sectional drawing of a band main body. (A) is a perspective view of a band body showing a state in which a lever is opened. (B) is a partially enlarged view thereof. It is a perspective view which shows the state which mounted the drum on the pallet. It is explanatory drawing when moving a drum.

FIG. 1 shows a fiber drum body according to the present invention. The fiber drum of this embodiment is composed of a cylindrical trunk body 1 made of kraft paper and a paper bottom plate 2 provided at the lower end of the trunk body 1 in the same manner as a conventional fiber drum.
The lower end portion of the body 1 of the fiber drum is bent inward as shown in FIG. 2 to form a bent portion 3, and a bottom plate 2 made of paperboard is integrally joined on the bent portion. Seal the bottom of the main body. Reference numeral 4 denotes a decorative paper or a lower bottom plate, which is joined to the bent portion 2 and the outside of the bottom plate 2 by adhesive bonding (FIG. 3).
The upper end portion of the trunk body 1 is curled outward to form a curling portion 5. The curling portion 5 of the main body 1 is covered with an upper cover 6 and fitted with a lock ring (not shown) or the like, and the upper opening is closed, as in the conventional case.

  FIG. 4 is an explanatory view showing a simplified bottom structure of the improved fiber drum of the present invention. As shown in the figure, the bottom plate 2 and 4 are connected to the bottom plates 2 and 4 by using a fastener capable of removing the bottom reinforcing plate 8 having a diameter slightly larger than the bottom plate and a detachable reinforcing lock band 7 below the bottom plates 2 and 4 of the drum. The strength of the bottom part is strengthened by holding.

  The bottom reinforcing plate 8 of this embodiment has a larger diameter than the bottom plate 2 of the drum and is formed in a disc shape with a peripheral edge protruding about 5 mm outside the bottom plate. Then, it is attached to the bottom of the drum by adhesion, and is further fastened and held in a coupled state to the bottom of the drum body as shown in FIG. 4 by a detachable fastener (or reinforcing lock band) 7.

  The material used as the bottom reinforcing plate 8 is suitable because the reinforced corrugated board is a lightweight and highly rigid structure. Among them, it is preferable to use a reinforced corrugated board that is a multilayer corrugated board of two or more layers. As materials other than paper, materials made of materials other than metal such as wooden plywood or fiberboard can be used.

  The bottom reinforcing plate 8 of this embodiment uses a reinforced corrugated board (thickness 10 mm) in which two A flutes are laminated as a base paper. Such a reinforced corrugated board is commercially available as “Hipple Ace” from Oji Interpack Co., Ltd., for example.

The reinforcing lock band 7 is made of steel as an example, but may be made of resin. As shown in FIGS. 6A and 6B, the band 7 is formed in an annular shape having a circumference that can be wound around the bottom of the drum body 1 from the outside, and a part of the annular band is formed. The main body has a lever-type fastening means that can be cut and reduced in diameter and can be unlocked.
FIG. 5B is a cross-sectional view of the band body 7.
The reinforcing lock band 7 is fixed by fitting a bottom reinforcing plate 8 into a fitting portion 7a having a substantially U-shaped cross section. And since it has the fixing | fixed part 7b which stood | started up perpendicularly from one piece of the fitting part 7a, and the embedding part 7c extended horizontally from one piece of the fitting part 7a, intensity | strength is high, and FIG. It can be tightened as shown in FIG. 5 (a) so that it does not slide down from the bottom of the drum body 1 of the drum.
FIG. 6A is a perspective view of the band showing a state in which the lever 9 is opened. As shown in FIG. 6 (b), the reinforcing lock band 7 is configured to be sealed by inserting a catch (not shown) into a sealing hole 10 formed in the lever 9.

DESCRIPTION OF SYMBOLS 1 Drum trunk body 2 Bottom plate 3 Bending part 4 Decorative paper (lower bottom plate)
5 Curling part 6 Top lid 7 Reinforcement lock band 8 Bottom reinforcement plate (reinforced corrugated cardboard)
9 Lever

Claims (4)

A bent portion 3 is formed by bending the periphery of the lower end of the paper tubular main body 1 inward, and a base plate 2 made of a paper surface material is integrally bonded to the bent portion by glue bonding. In the fiber drum formed by sealing the lower surface,
A separation type fiber drum characterized in that the bottom of the drum is reinforced by tightening and holding the bottom reinforcing plate 8 having a slightly larger diameter than the bottom plate 2 of the drum in a coupled state by a detachable lock band 7 to the bottom plate 2 .   2. The separation type fiber drum according to claim 1, wherein the bottom reinforcing plate 8 of the fiber drum is made of reinforced corrugated cardboard composed of two or more layers of corrugated cardboard.   2. The separation type fiber drum according to claim 1, wherein the bottom reinforcing plate 8 of the fiber drum is made of wood or fiber material such as plywood or fiberboard other than metal.   The lock band 7 for attaching the bottom reinforcing plate 8 to the bottom plate 2 is formed in an annular shape having a circumference that can be wound from the outside around the bottom of the paper tubular main body, and a part of the annular band is cut. The separable fiber drum according to any one of claims 1 to 3, further comprising a lever-type tightening means 9 that is configured to be able to reduce the diameter and that can be unlocked.

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