KR100555030B1 - Tranport Packaging Materials with Excellent Airtightness and Chemical Resistance - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging container for transportation suitable for transporting, storing and transporting chemicals having excellent hygroscopicity and chemical resistance and having high hygroscopicity and corrosion resistance such as inorganic chlorine compounds and anhydrides thereof. It is done.

The packaging container according to the present invention is a combination of a bottle-shaped inner bag formed of a multilayer resin film having excellent moisture resistance, acid resistance and air resistance, and a flexible container outer bag for storing the bottle-shaped inner bag and having excellent strength. It is a packaging container for transportation excellent in the airtightness and chemical-resistance comprised.

Description

Transport packaging materials with excellent airtightness and chemical resistance

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container for transport excellent in airtightness and chemical resistance, which is used for transporting, storing and transporting chemicals having a strong hygroscopic or corrosive property such as inorganic chlorine compounds and anhydrides thereof.

In general, in transporting a drug in the form of powdered granules, such as industrial raw materials and products, a container or a transportation means is selected after considering the physical and chemical properties of the drug and adapting to the situation of using the drug.

However, such powder granules exhibit strong hygroscopicity and corrosiveness. Such chemicals generally absorb or dissolve in air when they are left open in the atmosphere (deliquescent; As a result, the main component may be decomposed to generate corrosive gas such as hydrogen chloride, or the purity thereof may be lowered. In addition, the acid may exhibit strong acidity, which may cause corrosion of the container or transportation means, thereby reducing its life.

Therefore, chemicals in the form of powder particles having high hygroscopicity and high corrosiveness are generally filled and transported in a container having excellent airtightness and corrosion resistance which can prevent invasion of air or molecular moisture.

For example, anhydrous chlorine compounds such as anhydrous aluminum chloride, anhydrous iron chloride, and the like are materials having such properties, and thus, many studies have been conducted for their filling, storage, and transportation. For example, moisture in a molecular state is invaded. In order to prevent this from happening, measures have been taken to use plastics having excellent corrosion resistance against hydrogen chloride gas.

For example, as a container for transporting such a substance, a ton of iron container (iron container) made of a thick steel sheet is known. The iron container is provided with a filling port and an exhaust port, although specifications vary from user to user. It is made of durable, excellent in the airtightness of the lid provided in the filling port, the discharge port, does not break well in case of accidents during transportation, there is a risk that the contents are less discharged, there is an advantage such as safety advantages or repeated use.

However, in recent years, in addition to deterioration of product quality, corrosion prevention of containers and safety of transportation, it is required to distribute goods in large quantities efficiently, and also to export abroad in large quantities. Intense courage is required. Therefore, in the conventional iron container, there is a problem in that the efficiency is poor because the weight of the container itself in the transport weight is large, and the volume is large for recovering empty containers. In addition, many kinds of containers are used to transport ordinary products in Korea, so it is difficult to share them.In addition, when reusing steel containers, the internal cleaning, drying and Annoying cleaning operations, such as changing air with high humidity, are needed.

In addition, it is not very desirable to use iron containers as containers for export. The reason for this is that the problem described above becomes more prominent. For example, since it takes time to recover empty containers, an increase in the number of containers is required, and it is complicated to manage many of these containers. It is expected to increase, and the cost may rise due to it.

Moreover, as another container for transporting such a substance, the drum container which gave resin lining is known. This drum has a relatively light weight of the container, the outside is formed of a metal strength protection material, and in addition, the inside is resin-lined, which is corrosion resistant and solves the problems of the iron container.

In addition, since such a drum is relatively lightweight, has excellent corrosion resistance and moisture resistance, and is used as a common container at home and abroad, and is generally distributed, it is used in a so-called one-way manner, and thus it does not need to be collected, so that the surface of the product is distributed. In addition, it is particularly suitable for export.

However, since the drum can be used and discarded once in a one-way method, the packaging cost is very high, and the filling operation is about 200 kg per barrel, and the number of operations per unit weight is four to five times that of an iron container. The need for a reversal device is also less workable and affects rising product costs.

In addition, various multilayer resin films are known as high-moisture-proof packaging materials, and have been used for packaging small quantities of several hundred gram units, such as food and portable heating appliances (disposable hand heaters). However, packaging with these multilayered resin films has various problems in practical use, such as film thickness, strength, flexibility, whether or not it can be manufactured with a bag, and it is difficult to obtain a sheet having a size required as a packaging material. Therefore, the packaging by the multilayer resin film is only for a small amount and excellent in moisture proof performance, but it is difficult to apply to large-scale packaging and transportation in tons, and thus it is not enough to satisfy all of the performance and functions equivalent to those of the conventional transport container. .

In addition, as a medium-sized packaging material having excellent moisture resistance for packing tens of kilograms of granular powder having high hygroscopicity, a multilayer film having polyvinylidene chloride or aluminum foil and paper having a gas barrier function on a resin film such as polyethylene or polyvinyl chloride Paper bags are known (Japanese Patent Laid-Open No. 55-19522, Japanese Patent Laid-Open No. 62-78059 and Japanese Patent Laid-Open No. 63-178949, etc.). However, this kind of paper bag using aluminum foil can be used as a packaging material of the material because the aluminum foil is corroded because resin films such as polyethylene and polyvinyl chloride penetrate hydrogen chloride and the like. Moreover, since this type of paper bag using polyvinylidene chloride has high moisture resistance but low strength of the bag itself, even if it can be used to pack 20 to 30 kg, it can be used to pack more weight, for example, 1 to 2 tons. Not only can it be used as a container, but the operation of opening and closing the bag at the time of dispensing is done by human hands, which is not suitable for a kind of material that absorbs moisture and generates gas.

Therefore, the present inventors have excellent airtightness and chemical resistance, and are convenient for handling such as filling and discharging, and transporting, storing and conveying chemicals in the form of powder particles having high hygroscopicity and corrosiveness such as inorganic chlorine compounds and their anhydrides suitable for mass transportation. As a result of a thorough investigation to develop a packaging container for use in transportation, the packaging container is formed into a double structure consisting of a bottle inner bag and a flexible container outer bag, and the airtightness and chemical resistance of the bottle inner bag The present invention was found to provide a strength that can withstand handling such as transportation, storage and conveyance to the outer bag of the flexible container.

Accordingly, an object of the present invention is to provide a packaging container for transport suitable for transporting, storing and transporting a chemical product having excellent hygroscopicity and chemical resistance and having high hygroscopicity and corrosion resistance such as inorganic chlorine compounds and anhydrides thereof.

It is also an object of the present invention to provide a packaging container for transportation, which has a large filling amount per unit of packaging, is easy to recover and reuse the container, and a small weight of the container with respect to the weight of the product, and is also suitable for mass transportation.

That is, the present invention is configured by combining a bottle-shaped inner bag formed of a multilayer resin film having excellent moisture resistance, acid resistance and air resistance, and a flexible container outer bag having excellent strength while storing the bottle-shaped inner bag. Provided is a packaging container for transport excellent in airtightness and chemical resistance.

In the present invention, the bottle-shaped inner bag has a shape that gradually narrows so that the entire amount of the content is smoothly discharged from the center of the bag to the lower outlet, and the content is degraded by the moisture in the molecular state in the air, or the generated hydrogen chloride gas In order to prevent spreading to the outside, it is necessary to have the resin film layer (A) excellent in at least moisture proof, acid resistance, and air resistance at least for the multilayer resin film which forms this bottle-shaped inner bag. Examples of the resin film layer (A) include polyvinylidene chloride, high density polyethylene, polyethylene vinyl alcohol, polypropylene, and the like, and in terms of moisture resistance to prevent invasion of moisture in the molecular state in the air, Among them, polyvinylidene chloride, high density polyethylene and polyethylene vinyl alcohol are particularly preferable.

Moreover, about the multilayer resin film which forms a bottle-shaped inner bag, the resin film layer B for sealing is attached to both surfaces of the said resin film layer A for the purpose of sealing, such as a heat seal, Further, the reinforcing resin film layer (C) may be formed on the outer side of the sealing resin film layer (B) located on the outside for the purpose of reinforcing the entire multilayer resin film. In the case of using as a small amount of packaging container which is easily consumed with a relatively low hygroscopic content, the sealing resin film layer (B) does not need to exist, but in order to completely prevent moisture generation and to completely prevent generation of gas due to moisture absorption, It is preferable that the sealing resin film layer (B) exists, and it is preferable to further provide the reinforcing resin film layer (C) in order to prevent damage.

Examples of the resin for forming the sealing resin film layer (B) include low density polyethylene, polyvinyl chloride, polypropylene, and the like, and low density polyethylene is particularly preferable in consideration of multilayering with other films. . Moreover, PET resin etc. are mentioned as an example of resin which comprises the said resin film layer (C) for reinforcement.

In addition, it is preferable that the said resin film layer (A) is 30-100 micrometers thick from a moisture-proof viewpoint, and the sealing resin film layer (B) is 20-100 micrometers thick which can simply heat-seal. The reinforcement resin film layer (C) may be appropriately determined in consideration of the strength of the bag and the ease of opening and closing.

In addition, the flexible container outer bag used in the present invention basically has a shape that can support the weight of the contents by wrapping the bottle-shaped inner bag filled with the contents, and the filling opening portion of the bottle-shaped inner bag on the upper or lower portion thereof. It has a top through hole and a bottom through hole through which the outlet part penetrates, and has a suspending tool used for transportation or feeding. It is formed of a tough material such as polypropylene or rubber, and accommodates and transports the inner bag. In the case of handling, discharging the product, etc., it is sufficient to have a strength that can withstand the operation such as tying up the inner bag of the bottle. Preferably, the top is open so that the bottle inner bag can be easily inserted therein, and the bottom part has an opening for the outlet of the bottle inner bag, and through this opening, the outlet of the bottle inner bag is exposed downward. In this case, it is preferable that the discharge port can be used to take out medicines in the form of powder particles such as inorganic chlorine compounds and their anhydrides filled in the inner bag shape.

In the packaging container for transport of the present invention, when the multilayer resin film constituting the bottle-shaped inner bag has the resin film layer B for sealing, for example, first the heat-exhaust portion of the bottle-shaped inner bag is heat-sealed. The inner bag of the bottle is placed in the outer bag of the flexible container, and the outlet of the inner bag of the bottle is projected outward from the bottom through hole of the outer bag of the flexible container, and in such a state, a thin string or a velvet fastener is provided around the opening of the bottom through hole. A tie tool is used to tie the opening around the bottom through-hole to the outlet of the inner bag and fix it between the inner bag of the bottle and the outer bag of the flexible container, and then fill the contents with the filling opening of the inner bag of the bottle. This filling port part is heat sealed and sealed. Furthermore, like the outlet portion, the filling port portion protrudes outward from the upper through-hole of the outer bag of the flexible container, and is fixed between the inner bag-shaped bag and the outer bag of the flexible container with a binding tool provided at the periphery of the opening. With this arrangement, even when the heat seal portion of the bottle-shaped inner bag discharge port is cut off when the content is taken out, the contents can not be immediately discharged from the discharge port by the tying tool, and the operation can be carried out more safely.

EMBODIMENT OF THE INVENTION Hereinafter, the packaging container for transport of this invention is demonstrated concretely based on the example of embodiment shown to an accompanying drawing.

1-4, the packaging container P for transport which concerns on embodiment of this invention is disclosed. The packaging container P for transport is a bottle-shaped inner bag 1 formed of a multilayer resin film excellent in moisture resistance, acid resistance and air resistance, and a flexible container outer bag 2 containing the bottle-shaped inner bag 1. It consists of).

As shown in Fig. 2, the bottle-shaped inner bag 1 is formed in a substantially cylindrical portion with a relatively large diameter in the center, and a cylindrical portion protruding upward in the upper portion of the storage portion 3. It is provided with the filling port part 4 and the discharge port part 5 formed in the cylindrical shape protruding below the said accommodating part 3, and the whole is formed from the multilayer resin film which has the flexibility of uniform thickness.

In addition, the flexible container outer bag 2 has a size in which the accommodating part 3 of the bottle-shaped inner bag 1 is almost perfectly accommodated therein, as shown in FIGS. 1, 3, and 4 (that is, the accommodating part ( An inner bag receiving portion 6 having an inner diameter approximately equal to the diameter of 3), and an upper surface portion 7 of the inner bag receiving portion 6 has a filling opening portion of the bottle-shaped inner bag 1; An upper surface through-hole 8 through which 4 passes is formed, and a bottom portion 9 of the inner bag receiving portion 6 penetrates the outlet portion 5 of the bottle-shaped inner bag 1. The bottom through hole 10 is formed, and the bottle-shaped inner bag 1 is accommodated in the flexible container outer bag 2, and in the bottle-shaped inner bag 1, the form of powder particles such as inorganic chlorine compounds and anhydrides thereof. When the medicine is filled, the accommodating part 3 of the bottle-shaped inner bag 1 can fit snugly within the inner bag receiving part 6. The lead port 4 and the outlet port 5 of the bottle-shaped inner bag 1 project outwardly through the top through hole 8 and the bottom through hole 10 of the flexible container outer bag 2, respectively. To be exposed.

In this embodiment, a hanging tool composed of a hanging belt 11a and a hanging rope 11b on the outer surface of the flexible container outer bag 2 for hanging, lifting, or the like during transportation, handling, product discharge, or the like ( 11) is provided. In the top through hole 8 and the bottom through hole 10, the filling port portion 4 of the bottle-shaped inner bag 1 penetrating these top through holes 8 and the bottom through hole 10 at the periphery of the opening. ) And a tying tool (12) for tying the outlet port (5) and fixing between the bottle-shaped inner bag (1) and the flexible container outer bag (2).

<Example>

As shown in FIG. 5, the low-density polyethylene layer (a) of 40 micrometers in thickness which has a heat seal property is made inside, and the outer side of the polyvinylidene chloride layer (b) of 102 micrometers which is excellent in air permeability, adhesiveness A low density polyethylene layer (c) having a thickness of 20 μm and a PET resin layer (d) for reinforcement having a thickness of 12 μm having excellent strength were sequentially stacked to prepare a multilayer resin film, and the bottle shown in FIG. 2 using this multilayer resin film. A shaped inner bag 1 was prepared.

The bottle-shaped inner bag 1 is placed in the flexible container outer bag 2 shown in Figs. 3 and 4, and the bottom end of the outlet portion 5 of the bottle-shaped inner bag 1 is sealed to transport the packaging container. (P) was prepared.

In this way, 1000 kg of anhydrous aluminum chloride (99.7%) was filled into the filling opening part 4 of the bottle-shaped inner bag 1 of the transport packaging container P obtained, and the air in this bottle-shaped inner bag 1 was filled. The suction port was removed by suction, and the filling port portion 4 was then sealed by heat sealing.

Thereafter, the hanging tool 11 provided in the outer bag 2 of the flexible container is suspended by a crane, loaded on a pallet, and returned to an indoor warehouse by a fork lift, and stored for three months in a closed indoor enclosure. do. During the storage, the smell of the surrounding hydrogen chloride was periodically examined, and after 3 months, the outlet portion 5 was cut out, and the anhydrous aluminum chloride was taken out into another container, and the dischargeability and purity of the anhydride at that time were measured.

As a result, it was excellent in carryingability of hanging up and conveying, and besides, the smell of hydrogen chloride in storage was not sensed at all, and the dischargeability at the time of taking out was discharged in 2-3 minutes, and in the bottle-shaped inner bag 1 after discharge. Was very good so that almost no anhydrous aluminum chloride was attached, the purity was not different from that at the time of filling, and moisture absorption was not recognized.

<Example 2>

As shown in Fig. 6, a low-density polyethylene layer (a) having a thickness of 40 mu m having heat seal properties is laminated on the inside and the outside, respectively, around a high-density polyethylene layer (e) having a thickness of 60 mu m that is excellent in air permeability. A packaging container P for transport was manufactured in the same manner as in Example 1, except that the resin film was prepared to prepare a bottle-shaped inner bag 1.

As a result of testing the packaging container P for transport of Example 2 similarly to the said Example 1, the favorable result similar to Example 1 was obtained.

Input operation into the reactor using this anhydrous aluminum chloride as a catalyst was performed. The time required to lift up 2000 kg was 20 minutes per bag, totaling 40 minutes.

Comparative Example 1

Input operation into the reactor using anhydrous aluminum chloride as a catalyst was performed in a conventional 250 kg drum.

In the case of the drum, the lid was opened, a jig was attached, and the drum was hung up to the inlet of the reactor and turned over. At this time, the required feeding time was 25 minutes per piece, and a total of 3 hours and 20 minutes was required to add 2000 kg.

The transport packaging container of the present invention does not penetrate moisture in transporting, storing and conveying hygroscopic and corrosive chemicals such as inorganic chlorine compounds and anhydrides, and does not penetrate moisture and acidic hydrogen chloride gas. In addition, the weight of the packaging material is light, the external bag can be easily collected and used, it is inexpensive, the transportation efficiency is good, it can be used for export abroad, and the product is filled and discharged efficiently. .

1 is a perspective explanatory view of a packaging container for transport according to an embodiment of the present invention,

FIG. 2 is a perspective explanatory view showing a bottle-shaped inner bag used as the packaging container for transport of FIG. 1, FIG.

3 is a plan explanatory view showing a flexible container outer bag used as the packaging container for transport of FIG.

4 is a bottom explanatory view showing the outer bag of the flexible container of FIG.

5 is an explanatory cross-sectional view of a multilayer resin film for producing a bottle-shaped inner bag of a packaging container for transport according to an embodiment of the present invention;

6 is a cross-sectional explanatory view of a multilayer resin film for producing a bottle-shaped inner bag of a packaging container for transport according to another embodiment.

<Description of Major Symbols in Drawing>

P: packaging container for transport 1: bottle-shaped inner bag

2: flexible container outer bag 3: storage

4: charging port part 5: discharge port

6: inside bag housing 7: upper surface

8: top through hole 9: bottom part

10 bottom through hole 11: hanging tool

11a: hanging belt 11b: hanging rope

12: Tying Tool

a, c: low density polyethylene layer b: polyvinylidene chloride layer

d: PET resin layer e: high density polyethylene layer

Claims (2)

It consists of a combination of a bottle-shaped inner bag formed of a multilayer resin film having excellent moisture resistance, acid resistance, and air resistance, and a flexible container outer bag having high strength and high strength. The flexible container outer bag is open at the top, and the bottom is provided with an airtight and chemical resistance packaging container having an opening for the outlet of the bottle-shaped inner bag. The method of claim 1, Multi-layered resin film forming a bottle-shaped inner bag has a resin film layer (A) excellent in moisture resistance, acid resistance and air resistance, and an outer surface of the sealing resin film layer (B) and the outer resin film layer (B) pasted on both sides thereof. It consists of a resin film layer (C) for reinforcement attached to, The resin film layer (A) is polyvinylidene chloride, high density polyethylene, or polyethylene vinyl alcohol, The resin film layer (B) is low density polyethylene, The resin packaging layer (C) is a packaging container for transporting excellent airtightness and chemical resistance, characterized in that the PET resin.