KR101475463B1 - inner liner for flexible intermediate bulk container - Google Patents

Abstract

In order to improve the durability by rapidly reducing the frictional force when the contents are accommodated and to improve the storage efficiency by quickly discharging the air contained in the minute residues, the present invention provides an internal space for storing the minute residues, Wherein the inlet portion, the outlet portion, and the inclined portion are formed by joining edges of a cut portion connected to the center portion, wherein the inlet portion, the outlet portion, and the inclined portion are formed by joining edges of cut portions connected to the center portion Wherein each of the rims is joined to a first joint line and a second joint line spaced apart from each other by a predetermined flow passage interval, a first air communicating portion is formed on the first joint line located at the inclined portion, And a second air communication part formed to be offset from the first air communication part at predetermined intervals, Provide an inner liner.

Description

Inner liner for flexible intermediate bulk container "

The present invention relates to an inner liner, and more particularly, to an inner liner for a container bag, which has improved durability by reducing frictional force when contents are contained, .

Generally, a container bag is also called a FIBC (flexible intermediate bulk container), a big bag, a bulk bag, and a container bag for storing and transporting fractions such as grain or synthetic resin materials As an industrial bag, a flexible material is used to facilitate the storage and withdrawal of the minute batch.

At this time, the container bag contains contents of about 500 to 2000 kg of chemical, mineral, grain, synthetic resin powder material, cement, and the like, and is stored in a crane, a hoist, Transported and stored in a warehouse or carried on a truck.

Particularly, it is important to maintain the quality of the raw material and to prevent loss and leakage when storing and storing the contents such as chemicals in a small particle state or raw materials for powder medicine. To this end, the inner liner is provided inside the container bag so that the contents do not directly come into contact with the container bag, thereby preventing foreign matter from entering from the outside, and also preventing loss and leakage of contents.

On the other hand, the conventional inner liner includes a charging portion for charging the contents, a receiving portion connected to the charging portion for receiving the charged contents, and a discharging portion for discharging the received contents if necessary. At this time, the inner liner is formed of a fabric or a flexible synthetic resin, is normally folded compactly and stored. When the contents are received, the inner liner is joined to the inside of the container bag to expand the accommodating portion to have a volume.

However, in the conventional inner liner, the connecting portion connecting the input portion and the accommodating portion is damaged by the friction due to the flow generated when the contents are inserted, thereby decreasing the durability, and a hole is formed in the connecting portion, . Accordingly, there is a problem that the contents are lost or contaminated by the container bag.

Moreover, the contents formed by the minute retentive contain a large amount of air between the particles when filled. If such air can not be smoothly discharged from the inner space of the inner liner to the outside, the inner liner may swell due to the air do.

At this time, when the container bag is stacked in multiple stages, the load applied from the upper portion is directly applied to the inner liner, so that the inner liner in a swollen state may blow out and the contents may be lost. As shown in FIG.

In addition, the container bag in which the inner liner in a swollen state is accommodated can not be fixed firmly due to the fluid air portion, so that a stable supporting force can not be formed. Accordingly, inconvenience to storage and transportation is increased, .

Accordingly, it is necessary to discharge the air contained in the inner liner in the packaging step. However, the time required for discharging the air is excessively consumed according to the particle size and weight of the pulp stream, There was a problem.

Korean Patent Publication No. 10-2004-0027809

In order to solve the above problems, there is a need to provide an inner liner for a container bag, which is improved in durability by reducing frictional force when contents of minute fractions are accommodated, The problem is solved.

According to an aspect of the present invention, there is provided an inner liner for a container bag, the inner liner including a central portion formed to accommodate therein minute particles, and a sloped portion formed at a portion where an inlet portion and an outlet portion, Wherein the outlet and the slope are joined to each other by a rim of a cut portion connected to the center portion, wherein the rims are joined by a first bonding line and a second bonding line spaced by a predetermined flow channel spacing, Wherein a first air communication part is formed in the first joint line located at an inclined part and a second air communication part formed in a staggered interval with the first air communication part is formed in the second joint line. Provides an inner liner for back.

In addition, the first air communicating portion and the second air communicating portion are formed as non-joining portions, and the air introduced into the internal space passes through the second air communicating portion and passes between the first joining line and the second joining line And is discharged to the first air communication portion.

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The angle of inclination between the inlet and the edge of the inclined portion may be in a range of 110 to 150 degrees.

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Through the above-described solution, the container bag according to the present invention provides the following effects.

First, the folded portion is firmly coupled to each of the base portions, the first bonding line and the second bonding line, so that the structure can be firmly maintained without being damaged due to the load of the contents, The internal air is smoothly discharged through the first air communication unit and the second air communication unit, and the air discharge time is reduced in the packaging step, so that the working efficiency can be improved.

Second, since the first air communicating part is spaced apart from the second air communicating part at a predetermined spacing interval, it is possible to limit the discharged contents to the outside, and the first air communicating part is formed below the second air communicating part So that the foreign matter can be prevented from being introduced into the second air communication unit.

Thirdly, since the air contained in the inside is discharged to the plurality of air flow paths leading from the second air communication portion formed at the inlet portion and the respective corners to the first air communication portion, the volume occupied by the air can be rapidly reduced, The storage efficiency of the bag can be improved.

Fourthly, the inner liner is formed to match with the inner shape of the container bag to be coupled to the outside, so that unnecessary cost of raw materials can be reduced. In addition, the inner liner can be formed gently in a range of 110 to 150 degrees between the edges of the inlet portion and the inclined portion. So that frictional force or impact when the particles come into contact with the particles are dispersed and canceled, so that the damage due to the input of the contents is reduced, so that the durability of the product can be improved.

1 is a perspective view illustrating an inner liner for a container bag according to an embodiment of the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an inner liner for a container bag.
3 is a cross-sectional view showing an AB section of Fig.
4 is a partial view showing a flow path structure formed in an inclined portion of an inner liner for a container bag according to an embodiment of the present invention;
5 is a partial view showing an inclined portion of an inner liner for a container bag according to another embodiment of the present invention.

Hereinafter, an inner liner for a container bag according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a state in which an inner liner for a container bag is unfolded according to an embodiment of the present invention, FIG. 2 is a front view showing a folded inner liner for a container bag according to an embodiment of the present invention, FIG. 4 is a partial view showing a flow path structure formed in an inclined portion of the inner liner for a container bag according to an embodiment of the present invention. FIG.

1 to 4, the inner liner 100 for a container bag according to an embodiment of the present invention includes an inner space for accommodating minute particles therein, and includes a wide central portion 17 and an inlet portion 14 And an inclined portion 18 formed at a portion where the central portion 17 is connected to the inlet portion 14 and the outlet portion 13.

The inlet part 14, the outlet part 13 and the inclined part 18 are formed by joining the edges of the incised part connected to the center part 17, To the first bonding line (40) and the second bonding line (30).

Here, the container bag is made of a flexible material so that the volume is kept to a minimum while the contents are not stored, and when the contents are stored, a large amount of cargo is accommodated in a predetermined space Is easily formed. Such a container bag is formed to maintain strength of the container bag while maintaining the outer shape of the container bag by woven with natural fiber material, PVC (polyvinyl chloride) or synthetic resin material (polypropylene, polyethylene).

The inner liner 100 is provided inside the container bag to keep the quality of the raw material when the contents are received, stored, and transported, and prevent the contents from being directly in contact with the container bag Not only prevents the inflow of foreign matter from the outside, but also serves to prevent the loss of contents and leakage.

At this time, the inner liner 100 is preferably formed of a flexible material, and is formed of a fiber material, a polyethylene terephthalate film, a multilayer film, an aluminum film, or the like which is chemically stable and less reactive with the content.

In detail, the inner liner 100 is formed as an integral film. The inner liner 100 is formed by joining both end portions, cutting the upper and lower portions thereof, and joining the cut portions to form the inlet portion 14 and the outlet portion 13 ) Can be formed.

Further, when the inner liner 100 is formed of an aluminum film or the like, due to the characteristics of the material, a narrow entrance portion and an exit portion, a wide central portion, and a plurality of inclined portions connecting the entrance portion and the exit portion with the center portion It is preferable that the film is formed by connecting a film of a sheet.

First, a case where the inner liner 100 is formed by connecting a plurality of films is described as follows.

The inner space may be a combination of the base portion 10 and the folded portion 20. In the base 10, a pair of symmetrical folded portions are folded so that both side surfaces of the front and rear surfaces are symmetrical to form both sides of the inner space. And is joined to the other end along the rim.

The base portion 10 is symmetrically formed so as to form a front surface and a rear surface of the inner space for accommodating the minute fractions. The base portion 10 includes a wide central portion 17, an inlet portion 14 and an outlet portion 13, . An inclined portion 18 is formed at both ends of the base portion 10 at a portion where the central portion 17 and the inlet portion 14 and the central portion 17 and the outlet portion 13 are connected to each other .

At this time, bent portions 18a and 18b are formed on the upper and lower sides of the inclined portion 18 connecting the center portion 17, the inlet portion 14, the central portion 17 and the outlet portion 13, The base 10 may be formed to be symmetrical with respect to the plane center line.

The folded portions 20 are symmetrically formed so as to form both side surfaces of the internal space for storing the minute particles. The center portions of the folded portions 20 are folded so that the opposite side ends 22 are bent at one side end and the other end side And are joined along the rim.

Here, the folded portion 20 is formed of a flexible material so that the center portion of the face is not damaged by repetitive folding and spreading, and is preferably formed of a material having chemical stability.

In detail, the base portion 10 and the folded portion 20 are connected to each other at both ends thereof to form an internal space for accommodating minute particles. At this time, the base portion 10 is formed as a pair facing each other to form a front surface and a rear surface of the internal space, and the folded portions 20 are formed as facing pairs to form both side surfaces of the internal space.

It is preferable that each of the folded portions 20 is connected to both the end portions and the other end portions of the base portions 10 in a state where the base portions 10 are arranged to face each other. At this time, the folded portion 20 is formed in the same shape as the base portion 10, and a folding guide portion 21 for guiding the folded shape of the inner liner 100 is formed at the center of the face.

Here, the folding guide portion 21 may be folded inward when the inner liner 100 is stored, and may be folded into a flat shape by closely contacting the base portions 10 with each other.

When the inner liner 100 has a bulky shape to accommodate the contents, the point 23 at which the bent portion 18a on the upper side of the inclined portion 18 is connected to the folded portion 20 is inwardly And the point 24 to which the bent portion 18b at the lower side of the inclined portion 18 is connected is bent outwardly.

Accordingly, the upper and lower sides of the inner space are narrow and the central side is wide. That is, the inner liner 100 is formed so as to match with the inner shape of the container bag to be coupled to the outer side, so that the inner liner 100 is manufactured in the same manner as the inner liner 100, Can be reduced.

Further, in the case of a cylindrical inner liner, it is necessary to reduce the wide inlet to be forced into the container bag, so that a large number of folded parts overlapping inside are required to be inserted into the container bag and the inner side is required to be opened.

On the other hand, in the case of the inner liner 100 of the present invention, when the contents are filled in the container bag, the content is filled in accordance with the inner shape of the container bag, so that the operation of inserting and replacing the inner liner 100 is smoothly performed, Can be improved.

A plurality of the fixing portions 16 are provided on the base portion 20 and are coupled to the inner surface of the container bag to fix the inner liner 100. The fixing portion 16 may be formed of a rope that can be coupled to a ring formed on the inner surface of the container bag or an adhesive tape selectively attachable to the inner surface of the container bag.

The fixing portion 16 is preferably provided on the upper side of the center portion of the base portion 20 and the lower side of the center portion. Accordingly, since the central portion of the inner liner 100 in which the contents are stored most is firmly fixed, the coupling force between the container bag and the inner liner 100 can be remarkably improved. Accordingly, when the contents are introduced and discharged, the container bag and the inner liner 100 are prevented from being separated from each other, and the contents are smoothly introduced and discharged, thereby providing an effect of improving work efficiency.

Of course, the fixing portion 16 may be provided only on the upper side of the center portion of the base portion 20. At this time, it is preferable that the lower portion of the central portion is closely attached to the container bag by a load of the contents to be filled.

It is preferable that the inner surface of the container bag and the outer surface of the inlet portion (14) to the outlet portion (13) of the inner liner (100) are bonded or stuck using sealing means. As a result, not only foreign substances can be prevented from flowing between the container bag and the inner liner 100, but also sharp foreign matter flows between the container bag and the inner liner 100, It is possible to prevent the contents from being lost due to damage.

The outer circumference of the container bag on the side of the inlet (14) to the outlet (13) may be provided with a string or cable tie for sealing the minute sieve contained therein.

Referring to FIG. 2, the angle of repose (.theta.1) between the edges of the inlet portion 14 and the inclined portion 18 is in a range of 110 to 150 degrees. In detail, the contents inputted through the inlet portion 14 form a frictional force on the inner surface of the inlet portion 14 and the inclined portion 18.

At this time, the contents are introduced from the upper side of the inlet portion 14 and are accommodated in the central portion 17 through the inner side surface of the inclined portion 18. The particles of the contents collide with the contents already accumulated and rub against the inner surface of the inclined portion 18 by the repulsive force between the particles of the content which sprang up or fall down.

In this case, a gap between the edge of the inlet part 14 and the inclined part 18 is gently formed in a range of 110 to 150 degrees, so that frictional force or impact when the particles come into contact with the particles can be dispersed and offset. Accordingly, the inner surface between the inlet 14 and the rim of the inclined portion 18 is less likely to be damaged due to friction or impact with the particles of the contents, so that durability can be improved.

In addition, since the upper surface of the inner space formed by the inlet portion 14 and the inclined portion 18 has a pyramid shape, the contents can be filled higher and the storage efficiency is improved as compared with the inner liner of the same size In addition, when the container bag is stacked, even if the inside air escapes and the top surface is turned downward, the top of the contents becomes flat, so that the lamination stability can be improved.

3, the folded portion 20 includes a first bonding line 40 and a second bonding line 30 spaced from each other at one end and the other end of the base 10, ).

The first bonding line 40 is formed at a position that is inwardly inward by a predetermined bonding distance at both side ends of the folded portion 20 and both side ends of the base portion 10. [ The second bonding line 30 is formed parallel to the first bonding line 40 at a position spaced apart from the first bonding line 40 by a predetermined flow channel spacing.

Therefore, the base portion 10 and the folded portion 20 are joined by the double bonding lines 30 and 40, so that even when the contents are filled, the pressure and the load due to the expansion of the contents are firmly supported, The structure of the inner liner 100 can be maintained.

At this time, it is preferable that the predetermined bonding interval is set so that the first bonding line 40 and the second bonding line 30 can be fixed with a jig or the like when they are bonded by thermocompression bonding or ultrasonic bonding.

The predetermined flow path spacing may be set at a minute interval at which air flows between the first bonding line 40 and the second bonding line 30 and the contents such as foreign matter and minute particles do not flow.

Of course, the inner liner 100 may be formed of an integrally formed film as described above. At this time, both side ends of the film are connected to each other to form an inner space. The inlet portion 14 and the outlet portion 13 may be formed by cutting and removing a portion of a side surface of the upper end portion and the lower end portion and joining edges of the incised portion.

In detail, when cutting the side portions of the upper end portion and the lower end portion, two opposite portions of the upper end portion and the lower end portion are cut, and the rim of the cut portion is joined to the inlet portion 14 and the outlet portion 13, Can be formed. Of course, it is also possible to form the incised portion at every 90 degrees of the upper end and the lower end side to join the edges of two adjacent incised portions to form the inlet portion 14 and the outlet portion 13.

The rim of the incised portion is joined to the first bonding line and the second bonding line spaced by a predetermined flow channel spacing.

Of course, even at this time, the first junction line and the second junction line are provided with the first air communication section and the second air communication section, and a rest angle between the edges of the inlet section 14 and the slope section 18 is The present invention is basically applied to the case where the inner space is formed integrally with the inner space and the outer space is formed by a plurality of couplings.

4, a first air communication part 41 is formed in the first joint line 40 located at the slope part 12, and a second air communication part 41 is formed in the second joint line 30, The air communicating part 41 and the second air communicating part 31 formed to be staggered at predetermined intervals are formed.

At this time, it is preferable that the predetermined spacing interval is set to be close to the air flow smoothly, and is set to a corresponding interval because the porosity of the air differs depending on the particle size of the particulate matter used therein.

Here, the first air communicating portion 41 and the second air communicating portion 31 are formed as non-joint portions. That is, the first bonding line 40 and the second bonding line 30 are connected to each other along the first bonding line 40 and the second bonding line 30 by thermocompression bonding, ultrasonic bonding, .

At this time, in the case of the thermocompression bonding method, a heat insulating agent is provided at a portion where the first air communicating portion 41 and the second air communicating portion 31 are to be formed to prevent the bonding, and in the case of laser heating, So that the first air communication part 41 and the second air communication part 31 can be formed.

Meanwhile, the contents to be filled in the inner space are formed of minute fractions or the like and contain air between the particles of the contents when they are received. The portion of the air occupied by the load of the contents is occupied by particles of the contents over time, and the air tends to be discharged to the outside of the inner liner.

At this time, air (a) introduced into the internal space passes through the second air communication part (31) and passes between the first bonding line (40) and the second bonding line (30) (41). Since the first air communicating unit 41 is spaced apart from the second air communicating unit 31 at predetermined intervals, it is possible to limit the discharged contents to the outside, thereby minimizing the loss of contents.

Air contained between the minute particles in the inner liner 100 causes a spatial waste when the container bag is loaded and stored. At this time, since the air contained in the inside is discharged to the first air communicating portion 41 and the second air communicating portion 31 formed in the inclined portion 12 as well as the opening of the inlet portion 14, The air can be quickly discharged to the outside, so that the spatial loss can be prevented and the storage efficiency can be improved.

In the case of the inner liner 100, the inlet portion 14 and the second air communication portion (not shown) formed at four corners require a time period of about 7 hours to about 10 hours. 31) to the first air communication part (41) is provided, so that the air discharge time is reduced in the packaging step, so that the working efficiency can be remarkably improved.

Furthermore, even if the inner liner 100 is directly sealed without air discharge operation in the packaging step, the air introduced into the inner space can be discharged to the outside, and the volume occupied by the air in the container bag is reduced, .

Of course, it is preferable that the first air communication part 41 is formed to be lower than the height of the second air communication part 31. Therefore, when foreign matter (b) flows into the first air communication part (41), the foreign matter is moved downward along the first bonding line (40) and the second bonding line (30) It is possible to provide an effect of preventing the inflow to the communication portion 31. [

5 is a partial view showing an inclined portion of an inner liner for a container bag according to another embodiment of the present invention. In this embodiment, the basic configuration except for the bending of the second bonding line on the upper side of the inclined portion is the same as that of the above-described embodiment, so that the description of the same parts will be omitted.

5, the bending of the second joint line 230 formed on the slant portion 212 of the inner liner 200 for a container bag according to another embodiment of the present invention is curved in a curved shape 230a Lt; / RTI >

This is because gaps between the edges of the inlet portion and the inclined portion are gently formed in the range of 110 to 150 DEG to disperse frictional force or impact when the particles come into contact with the particles to thereby cancel out the particles, The effect of canceling frictional force and impact between the second bonding line 230 and the particles of the contents is provided to prevent the second bonding line 230 from being burned, thereby improving durability.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

100, 200: Inner liner for container bag 10, 210:
20: folded portion 30, 230: second joint line
40,240: first bonding line 18,212: inclined part
21: folding guide portion 16:
&thetas; 1, &thetas; 2: an angle of repose 14:
13: outlet portion 31, 231: second air communication portion
41, 241: first air communication part a: air
b: Foreign matter

Claims (5)

The inner liner for a container bag having an inclined portion formed at a central portion formed to be wider and a narrow portion formed at an inlet portion and an outlet portion,
The inlet portion, the outlet portion, and the slope portion are formed by joining edges of a cut portion connected to the center portion. The edges are joined to a first joint line and a second joint line spaced apart from each other by a predetermined flow passage interval ,
Wherein a first air communication part is formed on the first joint line located at the inclined part and a second air communication part formed to be staggered from the first air communication part at predetermined intervals is formed on the second joint line Inner liner for container bag. delete The method according to claim 1,
Wherein the first air communicating portion and the second air communicating portion are formed as non-joint portions,
Wherein the air introduced into the inner space passes through the second air communicating portion, passes between the first joint line and the second joint line, and is discharged to the first air communicating portion. The method according to claim 1,
Wherein the angle of inclination between the inlet portion and the edge of the inclined portion is in the range of 110 to 150 °. delete

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