JP2002200712A - Container for adhesive and sealing material and method for packaging adhesive and sealing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container for an adhesive and a sealing material by which residue of the content can be remarkably reduced and expenditure to be needed for treating a used container can be remarkably decreased in comparison with packaging using a conventional can as the container for packaging the adhesive and the sealing material. SOLUTION: By forming a liquid-like plasticizer layer 3 on the inner face of a pouch 1 prepared by forming a film-like material 2 into a bag, the adhesive or the sealing material stored in the pouch 1 is prevented from sticking on the pouch 1 to easily take out the whole amount of the adhesive or the sealing material in the pouch 1. Ability for preventing the adhesive and the sealing material from sticking on the inner face of the pouch can be kept for a long time caused by non-volatility of the plasticizer and therefore, under a condition where the plasticizer layer 3 is formed on the inner face of pouch 1 one side of which is opened, it is possible to store it for a long time or to be used for circulation as a container under the condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a container for an adhesive and a sealing material, and a method for packaging the adhesive and the sealing material.

2. Description of the Related Art For example, adhesives for building sealants are usually distributed in a relatively large can containing 20 liters or the like. In addition, commercial adhesives are also distributed while being housed in tubes.

In recent years, with the enforcement of the Container Recycling Law, the collection of containers has become obligatory under the burden of the manufacturer, but the used cans are bulky, In addition, since the contents of the sealing material and the adhesive remain on and adhere to the inner surface of the can containing the sealing material and the adhesive, it is necessary to remove the adhered material after the collection. However, in particular, the adhesive generally has a high viscosity of about 300,000 to 500,000 centipoise,
There is a problem that it cannot be easily removed, so that the cost required for the collection process of the can also increases. For this reason, there has been a strong demand for a container or a packaging method which requires less processing cost in place of a can for this kind of adhesive or sealing material. Therefore, if a pouch is adopted as a container for the adhesive or the sealing material, the bulk after use can be greatly reduced as compared with the can, and the cost required for the collection process can be reduced. Is filled with adhesive, etc.,
Most of the adhesive and the like in the pouch can be easily taken out, but there is a problem that the adhesive and the like remaining in the pouch stick to the inner surface of the pouch and are difficult to take out. The present invention has been made in view of such circumstances, and the cost required for collecting a container using a pouch as a container for an adhesive and a sealing material can be significantly reduced as compared with a can. It is an object of the present invention to provide a container for an adhesive and a sealing material capable of almost completely taking out the adhesive or the like to the outside by a simple operation, and a method of packaging the adhesive and the sealing material.

In order to achieve the above-mentioned object, a container for an adhesive and a sealing material according to the present invention comprises a liquid plasticizer layer on the inner surface of a pouch formed by forming a film-like material into a bag. Are formed (claim 1). Here, in the present invention, in the distribution form of the container itself before accommodating the adhesive and the sealing material, one side of the pouch was opened, and the opened side contained the adhesive inside. It is possible to suitably adopt a configuration that is sealed by fusion later (claim 2). Further, in the adhesive and sealing material container of the present invention, the film-like material forming the pouch can be a laminated film including a gas barrier layer or a water vapor barrier layer (claim 3). on the other hand,
The method for packaging the adhesive and the sealing material of the present invention is as follows.A pouch formed by forming a film-like material into a bag shape with one side open, a suitable amount of a liquid plasticizer is injected, and a roll is pressed or applied from the outside with a roll. By pressing, the plasticizer in the pouch is spread over the entire inner surface of the pouch, and then an adhesive or a sealing material is injected into the pouch through one side of the opening, and then one side is sealed by fusion. (Claim 4). The present invention uses an adhesive or a pouch as a container for accommodating a sealing material, the bulk of the container is greatly reduced after use and the pouch is easy to handle, and by providing a layer of a liquid plasticizer on the inner surface thereof, The purpose of the present invention is to prevent an adhesive or a sealing material from sticking to the inner surface of the pouch, thereby achieving an intended purpose. That is, the present inventors have conducted intensive studies to adopt a pouch as a container body of the adhesive and the sealing material, and as a result, the adhesive or the sealing material sticks to various resins forming the pouch. However, by applying a liquid plasticizer to the inner surface of the pouch, the adhesive or sealing material does not adhere to the inner surface of the pouch at all, and the plasticizer is generally non-volatile or Because it has the property of being extremely poor, even if a long time has elapsed after application to the inner surface of the pouch, the above-mentioned ability to inhibit adhesion to the resin is maintained, and further, various adhesives and sealing materials are usually used. In many cases, the plasticizer itself contains a plasticizer. By selecting an appropriate type of plasticizer and applying it to the inner surface of the pouch, the adhesive and the contents are removed. It does not deteriorate like its performance for sealing material, in which like are known, leading to the present invention. By the way, when silicone oil or the like is used as a layer formed on the inner surface of the pouch, the same effect as when a plasticizer is applied can be achieved at the beginning of application, but the effect ends in a short time due to volatilization. It has been found that it cannot be put to practical use. Here, the plasticizer that can be used in the present invention is not particularly limited as long as it is a liquid at ordinary environmental temperature including room temperature, and does not affect the adhesive as a content. For example, DOP (dioctyl phthalate), DBP (dibutyl phthalate), DHP (dihebutyl phthalate), DIDP
Phthalates such as (disiisodecyl phthalate), TCP
(Tricresyl phosphate), phosphates such as TOP (trioctyl phosphate), fatty acids such as DOA (dioctyl adipate) and MAR (methyl acetyl ricinoleate), and polyols such as PPG (polypropylene glycol). Can be. The invention according to claim 2 shows a preferred form in the distribution or storage state of the container itself by utilizing the non-volatility of the plasticizer layer formed on the inner surface of the adhesive and sealing material container according to the present invention. That is, even if it is distributed or stored in a state where one side of the pouch having a plasticizer layer formed on the inner surface is opened, the above-described effect of the plasticizer layer on the inner surface of the pouch may be deteriorated due to the non-volatility of the plasticizer. Absent. Therefore, according to the second aspect of the present invention, the adhesive can be immediately injected into the inside of the pouch through one of the opened sides, and the opening is simply sealed by fusion after the injection, so that the packaging of the adhesive is performed. Can be completed. In the present invention, for the film-like material constituting the pouch, the material, structure, etc. are not limited, for example, a stretchable polyamide resin layer and a fusible layer such as a low-density polyethylene resin layer or an unstretched polypropylene layer. In addition, as for the material whose contents dislike air and water, a gas barrier layer or water vapor is added to the film-like material forming the pouch as in the invention according to claim 3. By forming the laminate including the barrier layer, the package can be packaged with the contents securely protected. Here, as the gas barrier layer or the water vapor barrier layer, an aluminum foil layer, a transparent vapor-deposited polyethylene terephthalate resin layer, a transparent vapor-deposited polyamide resin layer, a composite stretched polyamide resin layer, a composite stretched polypropylene layer, and an ethylene-vinyl alcohol copolymer resin A layer, an aluminum vapor-deposited polyethylene terephthalate resin layer or the like can be suitably used. The method for packaging an adhesive according to the fourth aspect of the present invention uses the adhesive and the sealing material container according to the present invention, and is used for automatically packaging the adhesive or the sealing material using an automatic packaging line. First, an appropriate amount of liquid plasticizer is injected into a pouch with one side open, and then pressed by a roll from the outside of the pouch, or by pressing in a planar manner, so that the plasticizer in the pouch is Is spread over the entire inner surface of the pouch, and in this state, an adhesive or the like is introduced into the inside of the pouch through an opening, and the opening is fused and sealed. According to this method, there is an advantage that the handling of the pouch on the automation line becomes easy without preparing a pouch having a plasticizer layer provided on the inner surface in advance.

Embodiments of the present invention will be described below. FIG. 1 is an external view of an embodiment of the present invention in a state before accommodating an adhesive or a sealing material, and FIG. 2 is a schematic cross-sectional view of the pouch 1 at an arbitrary position other than a fused portion M. The pouch 1 in this example is
In a state in which two film-like materials 2 are superimposed, three sides are fused to each other at a fusion part indicated by M in FIG. 1 and the other side is opened. The film-like material 2 forming the pouch 1 is composed of a laminate in which a polyethylene terephthalate resin layer 21, an aluminum foil layer 22, a stretched polyamide resin layer 23, and a low-density polyethylene resin layer 24 are laminated in this order from the outer surface side. And this pouch 1
Is formed with a liquid plasticizer layer 3 of, for example, DOP. In order to package an adhesive or a sealing material using the embodiment of the present invention having the above-described configuration, a required amount of the adhesive or the sealing material is injected into the inside of the pouch 1 through an open side thereof, The opening side is sealed by fusion, and the fusion parts M are attached to all four sides of the pouch 1.
Is formed into a packaged state as shown in the external view in FIG. In order to take out the adhesive or the sealing material as the contents from the packaged state as shown in FIG. 3, an arbitrary portion of the pouch 1 is broken and the broken portion is directed downward. The entire amount can be easily taken out without sticking at all. Moreover, according to the embodiment of the present invention, even if the plasticizer layer 3 is stored for a long time in the unused state shown in FIG. No. 3 can be used for packaging an adhesive or a sealing material at any time as it is without impairing the adhesion inhibiting ability of the adhesive at the beginning. The above is an example in which the adhesive or the sealing material is packaged using the pouch 1 in which the plasticizer layer 3 is formed on the inner surface in advance. However, in the case where an automated packaging line is used, the plasticizer layer 3 is packaged. In the process, it can be formed on the inner surface of the pouch 1. An example will be described below. The automated packaging line used in this example includes a pouch transport mechanism having one side opened, an expanding mechanism for expanding the open side of the pouch, and an adhesive or sealing material contained in the pouch having the opened side. A regular automated bagging line equipped with a fixed-rate feeding mechanism for feeding a certain amount of material and a heat fusing mechanism for fusing and sealing the opening side of the pouch filled with adhesive or sealing material is opened. This can be realized by adding a plasticizer injecting mechanism for injecting a small amount of liquid plasticizer into the inside from the side, and a roll pressing mechanism in which the pouch into which the plasticizer has been injected is squeezed with a pair of rolls from the outside. FIG. 4 is a flowchart showing an operation procedure of the packaging line having the above-described mechanisms. First, a pouch having one side opened is conveyed to a plasticizer injection mechanism, the opening side is expanded by an expansion mechanism, and a predetermined minute amount of a liquid plasticizer is supplied into the inside. Next, the plasticizer is pushed and spread on the inner surface of the pouch by squeezing the pouch from the outside with a roll pressing mechanism. This allows
A container equivalent to that illustrated in FIGS. 1 and 2 in which a liquid plasticizer layer is formed on the entire inner surface of the pouch is obtained. After that, the pouch is transported to the adhesive or sealing material supply mechanism, the opening side is widened, the adhesive is injected into the inside, and finally, the opening side of the pouch is fused by the heat fusing mechanism. And seal. Thereby, a packaging state equivalent to that shown in FIG. 3 is obtained. Note that the roll pressing mechanism in the above-described packaging line can achieve the same operation and effect even if a pouch in which the plasticizer is injected is replaced with a flat plate pressing mechanism that presses the pouch from both outer sides using a flat plate.

As described above, according to the adhesive or sealing material container of the present invention, since the liquid plasticizer layer is formed on the inner surface of the pouch, the adhesive or the sealing material contained in the pouch is used. The material does not stick to the inner surface of the pouch at all, so that the adhesive or sealing material, which is the contents, can be used more completely than in conventional can packaging, and the used state In this case, the volume can be greatly reduced, and at the same time, since no adhesive or sealing material remains inside, the cost required for treating used containers can be significantly reduced. Moreover, since the plasticizer is non-volatile, even if a long period of time elapses after application to the inner surface of the pouch, the ability to prevent adhesion to the adhesive or the sealing material hardly declines, so that one side is opened, and The pouch having a plasticizer layer formed on its inner surface can be stored for a long period of time, or can be supplied in that state. Further, a plasticizer such as DOP has an advantage that its price is lower than that of silicone oil and the like. Further, by including a gas barrier layer or a water vapor barrier layer in the film-like material constituting the pouch, it is possible to cope with any adhesive or sealing material that dislikes air or water. According to the adhesive and sealing material packaging method of the present invention, an adhesive or sealing material as a content is supplied in a fixed amount into a pouch having one side opened, and then the opening side is fused and sealed. To the automated packaging line, a mechanism for injecting a liquid plasticizer into the pouch and a mechanism for pressing the sheet from the outside by means of a roll, or a sheet-like pressing mechanism, an adhesive capable of exhibiting the above-described effects and The packaging state of the sealing material is obtained.

[Brief description of the drawings]

FIG. 1 is an external view of an embodiment of the present invention in a state before accommodating an adhesive or a sealing material.

FIG. 2 is a schematic cross-sectional view of the pouch 1 according to the embodiment shown in FIG.

FIG. 3 is an external view showing a state in which an adhesive or a sealing material is accommodated in the embodiment of the present invention and the opening side is fused and sealed.

FIG. 4 is a flowchart for explaining an operation procedure when the packaging method of the present invention is implemented using an automated packaging line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pouch 2 Film-like material 21 Polyethylene terephthalate resin layer 22 Aluminum foil layer 23 Stretched polyamide layer 24 Low-density polyethylene resin layer 3 Plasticizer layer M Fused part

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 3E018 AA04 AB07 BA02 BA08 CA06 EA04 3E064 AA05 BA60 BB03 BC08 BC18 EA01 EA30 FA05 HN05 HU10 3E086 AB01 AD01 BA04 BA15 BA40 BB01 BB02 BB51 BB90 CA29 4A100 BB01 AK30A01C BA02 BA03 BA04 BA05 BA07 BA10A BA10B BA13 CA04B DA01 EH112 EJ172 EJ37D GB16 JD02C JD04C JL02

Claims (4)

[Claims] 1. A container for accommodating an adhesive and a sealing material, wherein a liquid plasticizer layer is formed on an inner surface of a pouch formed by forming a film material into a bag shape. For adhesives and sealants. 2. The container for an adhesive and a sealing material according to claim 1, wherein one side of the pouch is opened, and the opened side is sealed by fusion after accommodating an adhesive therein. . 3. The adhesive and sealing material container according to claim 1, wherein the film material forming the pouch is a laminated film including a gas barrier layer or a water vapor barrier layer. 4. A method for packaging an adhesive and a sealing material, wherein a suitable amount of a liquid plasticizer is poured into a pouch formed by forming a film-like material into a bag shape with one side opened, and a roll is rolled from the outside. After the plasticizer in the pouch is spread over the entire inner surface of the pouch by pressing or pressing with a surface, an adhesive or a sealing material is injected into the pouch through one side of the opening, and then one side is sealed by fusion. A method for packaging an adhesive.