KR100199891B1 - Method for packing bulk-type goods in unit-loading packing container and unit-loading packing container for packing volumetric goods - Google Patents

Abstract

The present invention relates to a method for packaging a volumetric article in a unitary container and to a unitary container for volumetric articles. The unit stackable container is composed of an inner container 11 and an outer container 16. The inner container 11 is an inner stem made of a flexible material provided with a stiffener structure, which is placed on the base 13 during the filling period of the volumetric article, whereby the inner container ( 11) is shaped like a parallelepiped. The outer container 16 is made of plastic material and firmly receives the inner container 11 to provide sufficient stability to the inner container.

Description

Method for packing bulk goods in unit stacking container and unit rewrap for packing bulk goods

1 is a schematic side view of a preferred embodiment of a unit stack packaging container produced according to the method of the present invention.

2 is a schematic side view of a second preferred embodiment of a unit stack packaging produced according to the method of the present invention.

3 is a schematic side view of a third preferred embodiment of a unit stack packaging container produced according to the method of the present invention.

4 is a schematic side view of a fourth preferred embodiment of a unit stack packaging container produced according to the method of the present invention.

5 is a schematic side view of a fifth preferred embodiment of a unit stack packaging container produced according to the method of the present invention.

6 is a plan view of a preferred embodiment of the reinforcing structure in the inner packaging of the unit stack packaging according to the present invention.

7 is a plan view of a second preferred embodiment of a reinforcing structure in an inner packaging container of a unit stack packaging container according to the present invention.

8 is a plan view of a third preferred embodiment of a reinforcing structure in an inner packaging container of a unit stack packaging container according to the present invention.

9 is a plan view of a fourth preferred embodiment of a reinforcing structure in an inner packaging container of a unit stack packaging container according to the present invention.

10 is a plan view of a fifth preferred embodiment of a reinforcing structure in an inner packaging container of a unit stack packaging container according to the present invention.

11 is a plan view of a sixth preferred embodiment of the reinforcing structure in the inner packaging of the unit stacking packaging according to the present invention.

12 is a plan view of a seventh preferred embodiment of a reinforcing structure in an inner packaging container of a unit stack packaging container according to the present invention.

13 is a plan view of an eighth preferred embodiment of the reinforcing structure in the inner packaging of the unit stacking packaging according to the present invention.

14a-14g are perspective views schematically illustrating various steps in one embodiment of the method according to the invention.

FIG. 15 is a schematic plan view of a second preferred embodiment of a formwork structure provided in the method shown in FIGS. 14A-14G.

* Explanation of symbols for main parts of the drawings

11: inner packaging container 12: formwork

12a, 12b: half formwork structure 13: base (pellet)

15: Fastening foil band 16: Outer packaging container

17: seam 19a 19h: reinforcement structure

20, 21: pneumatic cylinder 112: formwork

112a, 112b: half formwork

The present invention relates to a method of packaging bulk goods in unit stack packaging. The invention also relates to a unit load package which is used for the packaging of volumetric articles and which consists of an inner packaging container and an outer packaging container. Here, the volumetric article means any article having a predetermined volume including, for example, grains and the like suitable for being packed into a unit-loading packaging container.

Boxed containers or rigid containers are used to package, store and transport volumetric articles, which are placed on a base (usually pellets). Box-shaped packaging consists of boxes of corrugated plates. Boxes made of corrugated plates are usually equipped with an inner sack. When the packaging container is filled with an article, it takes the shape of a quadrilateral, so that the transport base can be optimally used, but the cost of the packaging container is expensive.

Unit stacks are also used for the packaging, storage and transportation of volumetric articles. Unit stacks are cheaper than boxed spores, but have the drawback that they do not use the transport base more effectively than boxed containers because they take a circular shape when filled with goods.

SUMMARY OF THE INVENTION An object of the present invention is a method of packaging a volumetric article in an elastic packaging container and a volume that, when filled with the article, takes a generally quadrilateral shape so that standard pellets (ie EUR, FIN pallets) can be used as the base. An elastic packaging container for a mold article is provided. In doing so, it is possible to combine the characteristics of the maximum space utilization by the box-type packaging container and the appropriate price of the elastic packaging container. In addition, the regeneration of the used packaging container is better because the regeneration is required without sorting the used packaging container, and the standard pellets are returned to the circulation system. In the case of boxed packaging, it is necessary to separate the box, the inner spigot and the base, and three separate systems should be arranged for recycling.

It is another object of the present invention to provide a method of packing a volumetric article in an elastic packaging container having a very low internal friction.

According to the present invention, a method of packing a bulk article in a unit stackable packaging has the following characteristics.

(a) An inner packaging container made of elastic material and provided with a reinforcing structure is disposed on the base.

(b) By filling a volumetric article into an inner packaging container, the inner packaging container generally takes the shape of a parallelepiped while filling the volumetric article.

(c) The inner wrapper and base are wrapped in an outer wrapper of plastic material so that a stable transport wrapper is formed.

In the unit-loading packaging container for packaging the volume-type article according to the present invention, the inner packaging container is an inner spigot made of a flexible material and includes a reinforcing structure, and the spigot preferably supports or suspended above the base ( and is placed on the base while being filled with a volumetric article, the outer packaging being made of plastic material and firmly enclosing the inner packaging to provide sufficient stability to the packaging.

In the method according to the present invention, by implementing to use a unit stack packaging container consisting of an inner packaging container made of a low-cost flexible material and the outer packaging container surrounding it provides a rigidity that meets the unit stack packaging container . As a flexible material of the inner packaging container, a relatively less rigid material such as plastic film, paper, or fiber is used. The elastic packaging container is supported or suspended on top of a suitable base, such as pellets, during filling of the volumetric article. After the inner packaging container, in which the reinforcing structure may be installed, is filled with a volumetric article, it is constrained to the base by the fastening foil and thereby forms a rigid unit, i.e. a unit load package. The width of the fastening foil is not an essential limiting factor. The width of the tightening foil is typically about 500 However, the overall width may be equal to the overall height of the inner packaging. Of course, a tightening hood or a shrinking hood may be used instead of the fastening foil.

The reinforcing structure may be a separate and separate reinforcing structure, but a portion of the inner packaging container may simultaneously act as the reinforcing structure.

The feature of the unit-loading packaging container (or the unit-loading packaging container) according to the present invention is that the inner packaging container of the unit-loading packaging container well withstands the deformation imposed thereon in the step of filling the article, and the volume during the step The circumferential size of the inner packaging container filled with the shaped article is generally not increased. The inner packaging can be widened to some extent during the filling of the article, that is, its shape can be changed to quadrilateral and then easily wound into the fastening foil to yield the final unit-loaded packaging. .

The unit stack packaging container according to the present invention enables the regeneration of the used elastic packaging material. In addition, the pellets used for the unit-loading packaging after the unit-loading packaging is empty can be stored and reused.

The unit stack packaging container according to the present invention, filled with volumetric articles, is a sufficiently robust and operable unit, and is also very suitable for storage and transportation. The unit stack packaging container according to the present invention can be easily lifted, for example, by means of a fork of a forklift truck in connection with its storage it is possible to lift the unit stack packaging container using the holes in the pellets.

The inner wrapper, outer wrapper and loading base form one unit, which can be easily stacked and hardly deformed during lamination and storage.

Although the inner packaging container itself is in the shape of a parallelepiped due to the reinforcing structure provided in the inner packaging container, even if the package is being packed with a very low internal friction, the outer packaging container is made of plastic material due to the stability of the inner packaging container. Inadequately maintained in light of the next step surrounding the inner packaging, handling factors such as lamination and stability of the final packaging are not always optimal.

In a preferred embodiment of the present invention, after filling the inner packaging container with an article, a negative pressure is applied before closing. In this case, the inner packaging is firmly squeezed around the volumetric article so that the stability of the inner packaging is increased and the next step can be easily executed.

A stable transport packaging container is obtained to surround the inner packaging container with a plastic material rigidly disposed relative to the inner packaging container. At this time, even if the negative pressure generated in the inner packaging container is extinguished with time, the stability of the unit stacking packaging container is maintained well. In this case, the following types of advantages are obtained compared to the conventional vacuum packaging container.

Conventional polyolefin plastics, such as polyethylene, can be used for the inner packaging, further eliminating the need for expensive barrier plastics that are difficult to recycle.

-Even if small holes are formed in the inner packaging during transportation and handling, the stability of the unit stack packaging is provided because it provides the necessary stability by the plastic material surrounding the inner packaging, preferably the foil under initial stress. It does not deteriorate.

In an embodiment of the method according to the invention, it is possible to use a separate outer formwork structure. In this case, the separate formwork structure is advantageously of the same size as the transport base because the inner packaging container follows the size of the transport base.

One of the most significant advantages of the present invention is that the unit stack packaging according to the present invention can be drafted with a smaller amount of material than conventional unit stacks, because no lift capacity is required. .

The invention will be better understood on the basis of the following description with reference to several preferred embodiments shown in the accompanying drawings.

In the embodiment shown in FIG. 1, the inner packaging container 1 is arranged on a stable base such as pellet 13. Reference numeral 14 denotes an opening for lift provided in the pellet 13. After the inner packaging container 11 is filled with bulk goods, the circumference of the filled inner packaging container 11 is wrapped around the tightening foil band 15. In this manner, the inner packaging container ( 11, an outer packaging 16 is formed which surrounds and provides sufficient stability to the unit stacking packaging.

The embodiment shown in FIG. 2 differs from the embodiment of FIG. 1 in that the inner packaging container 11 is surrounded by the full width tightening foil 16a.

The embodiment shown in FIG. 3 is the same as the embodiment of FIG. 2 except that the joining line 17 is provided with a fastening foil 16a.

In the embodiment of Fig. 4, the inner packaging container 11 filled with the volumetric article is surrounded by a tightening hood or shrinking hood 16b constituting the outer packaging container of the unit stacking packaging.

In the embodiment of Fig. 5, the inner packaging container 11 filled with the volumetric article is surrounded by a tightening sock or a shrinking sock 16c constituting the outer packaging of the unit stackable packaging.

In the unit stack packaging container according to the invention, a separate reinforcement structure is used. The reinforcing structure is installed in the inner packaging container 11 in the manner shown in FIGS. 6 to 13. In the embodiment shown in Figure 6 the inner packaging container 11 is provided with a reinforcing structure (19a) of the cross shape. In the embodiment of FIG. 7, the tubular reinforcing structure 19b is provided at the edge of the inner packaging container 11. In the embodiment of Figure 8, the inner packaging container 11 is provided with a reinforcing structure (19c) of the net shape. In the embodiment of FIG. 9, the inner wrapper 11 is provided with a tubular reinforcement structure 19d, which is arranged approximately in the central zone and supported by the wall of the inner wrapper 11. In the embodiment of FIG. 10, the inner packaging container 11 is provided with a rectangular reinforcing structure 19e, which is supported by the inner packaging container 11 from two of the opposing surfaces of the inner packaging container. In the embodiment of FIG. 11, the inner packaging container 11 is provided with a substantially circular reinforcing structure 19f. In the embodiment of FIG. 12, the inner packaging container 11 is provided with a substantially circular reinforcing structure 19g close to two ellipses. In the embodiment of Figure 13, the inner packaging container 11 is provided with a reinforcing structure (19h) of the rhombus shape. The shape of the reinforcing structure is not critical. Most importantly, the reinforcing structure must support the inner packaging container such that the inner packaging container 11 maintains a shape substantially parallel to the parallelepiped.

In the process according to the invention for packaging volumetric articles in unit stacking packaging, it is made of an elastic material and is made of reinforcing structures 19a, 19b, 19c, 19d, 19e, 19f. ), (19g), (19h) is formed on the base 13, the inner packaging container (11). By filling the volumetric article in this inner packaging container 11, the inner packaging container 11 takes the shape of a substantially parallelepiped while being filled. According to the basic idea of the present invention, the inner packaging container 11 is firmly pressed around the volumetric article by applying a negative pressure to the inner packaging container 11 filled with the volumetric article. The inner packaging container 11 filled with the volumetric article and subjected to negative pressure is then surrounded by the outer packaging container 16 made of plastic material.

In the embodiment shown in FIGS. 14A-14G, reference numerals 12 generally denote formwork (frame) structures used in the method of the present invention. Positioning of the inner packaging container 11 relative to the base 13 is made using the formwork structure 12. In this embodiment, the formwork structure 12 is composed of two half formwork 12a and 12b. In the state as shown in Fig. 14A, the half dies 12a and 12b having a generally U-shaped cross section are separated from each other. In the next step, the half formwork 12a and 12b are moved towards each other to form a generally parallelepiped formwork 12. In the step shown in FIG. 14C, the inner stem 11 is placed into the formwork structure 12 (the reinforcing structure in the pile is not shown). Figure 14d shows a step in the process of filling the inner spigot 11 with a volumetric article, in which the inner spigot 11 takes a generally quadrilateral shape inside the formwork structure 12. In the step shown in FIG. 14E, a negative pressure is applied to the inner stem 11 filled with the volumetric article.

In this embodiment of the method, the inner arm 11 is in communication with a negative pressure source (not shown) via a tubular conduit 18. In the step shown in FIG. 14F, the half-forms 12a, 12b of the formwork structure 12 are moved away from each other, so that the inner spigot 11 filled with the volumetric article and subjected to negative pressure generally has a quadrilateral shape. Keep it. In the step shown in FIG. 14g, the formwork structure 12 is completely removed and the inner wrap 11 filled with volumetric articles and subjected to negative pressure is surrounded by an outer packaging 16 made of plastic material. As a result, a stable shipping container is formed.

In a general embodiment of the method of the invention, a separate formwork structure is not necessary because the inner packaging container 11 can be arranged on the base 13, for example by suspension. If desired, separate outer formwork structures 12 may be used in the method of the present invention, as shown in the embodiment shown in FIGS. 14A-14G. In such a case, it is preferable to make the detachable outer formwork structure 12 the same size as the transport base 13 because the inner packaging container 11 exactly follows the size of the transport base 13.

In the embodiment shown in FIG. 15 the formwork structure is indicated generally by the reference numeral 112. The formwork structure 112 is composed of half formwork 112a, 112b having a generally L-shaped cross section. The pneumatic cylinder 20 is installed to move the half formwork 112a, and the pneumatic cylinder 21 is installed to move the half formwork 112b.

While the invention has been described with only a few preferred embodiments, it will be apparent to those skilled in the art that numerous modifications may be made to the above embodiments without departing from the spirit of the invention as defined in the appended claims. something to do.

Claims (21)

A method of packaging a volume-type article in a unit stacking packaging, comprising: (a) an inner packaging container 11 made of an elastic material and provided with reinforcing structures 19a, 19b, 19c, 19d, 19e, 19f, 19g, and 19h. ) Is placed on the base 13, and (b) the inner packaging container 11 is filled with a volumetric article to take a generally parallelepiped shape while the inner packaging container 11 is filled with the volumetric article. In the above packaging method, (c) a stable transport package by surrounding the inner packaging container (11) and the base (13) by outer packaging containers (16, 16a, 16b, 16c) made of plastic foil material. A method of packaging a volumetric article in a unit stacking container, characterized in that to form a container. The method of claim 1, wherein (d) the inner packaging container 11 filled with the volumetric article is subjected to underpressure to firmly compress the inner packaging container 11 around the volumetric article, and (e) the volumetric article is filled. The inner packaging container (11), which has been subjected to a negative pressure, is surrounded by an outer packaging container (16, 16a, 16b, 16c) of plastic material. The method of claim 1, wherein (d) when the inner packaging container 11 is disposed inside the formwork structures 12 and 112, and (e) the inner packaging container 11 is surrounded by the formwork structures 12 and 112. Filling the inner packaging container 11 with a volumetric article to allow the inner packaging container to take the shape of a substantially parallelepiped, and (f) applying the inner packaging container 11 filled with the volumetric article to fit the inner packaging container. (11) is firmly squeezed around the volumetric article and (g) formwork structures 12 and 112 are removed from the circumference of the inner packaging container 11 filled with the volumetric article and filled with the volumetric article and subjected to negative pressure. The inner packaging container 11 is maintained in a generally equilateral hexahedral shape, and (h) the outer packaging container 11 filled with a volumetric article and subjected to a negative pressure to an outer packaging container 16, 16a, 16b, To be surrounded by 16c) How to feature. 4. A method according to claim 3, wherein the process of applying negative pressure in step (f) has already begun in step (e). 5. Method according to claim 3 or 4, characterized in that the formwork structure (12,112) consists of movable half formwork (12a; 112a, 12b; 112b). 6. Method according to claim 5, characterized in that the cross section of the half formwork (12a, 12b) of the formwork structure (12) is generally U-shaped. 6. A method according to claim 5, wherein the cross section of the half formwork (112a, 112b) of the formwork structure (112) is generally L-shaped. The method according to any one of claims 1 to 4, 6 and 7, characterized in that the inner packaging container (11) is suspended on top of the base (13). Method according to one of the preceding claims, characterized in that the inner packaging (11) is supported on top of the base (13). According to any one of claims 1 to 4, 6, 7, wherein the outer packaging container 16 is a foil band for tightening around the inner packaging container (11) and the base (13). 15) by winding up. 8. Method according to any one of the preceding claims, characterized in that the outer packaging is formed by a full width tightening foil (16a). The method according to any one of claims 1 to 4, 6 and 7, wherein the outer packaging container is formed by a full width tightening foil (16a) provided with a seam (17). . 8. Method according to any one of the preceding claims, characterized in that the outer packaging is formed by a fastening or shrinking hood (16b). 8. Method according to any one of the preceding claims, characterized in that the outer packaging is formed by a tightening or shrinking soak (16c). A unit stack type packaging container for packaging a volume item, wherein the unit stack packaging container includes an inner packaging container 11 and an outer packaging container 16, 16a, 16b, and 16c, and the inner packaging container 11 is Inner hung made of flexible material and provided with reinforcing structures 19a, 19b, 19c, 19d, 19e, 19f, 19g, 19h, wherein the inner spigot is supported by supporting or suspending it on top of base 13 In the unit stacking packaging for volumetric article packaging, which is disposed on the base 13 while being filled with a shaped article, the outer packaging container is made of plastic foil material, and the inner packaging container 11 and the The base (13) is tightly enclosed by the outer packaging container is a unit-load packaging container for packaging the bulk-size goods, characterized in that to impart proper stability to the packaging container. The unit packaging container according to claim 15, wherein the outer packaging container (16) is an outer packaging container formed by winding a fastening foil band (15) around the inner packaging container (11). 16. The unit stack packaging container according to claim 15, wherein the outer packaging container is a full width tightening foil (16a) surrounding the inner packaging container (11). 16. The unit stack packaging container according to claim 15, wherein the outer packaging container is a full width tightening foil (16a) provided with a seam line (17) and surrounding the inner packaging container (11). 16. The unit stack packaging container according to claim 15, wherein the outer packaging container is a fastening or shrinking hood (16b) surrounding the inner packaging container (11). 16. The unit stack packaging container according to claim 15, wherein the outer packaging container (16c) is a tightening or shrinking sock surrounding the inner packaging container (11). The unit stack packaging container according to any one of claims 15 to 20, wherein the base (13) is a pellet provided with openings (14) for lifts.