JPH09255046A - Container for two-liquid mixing adhesive and packages therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a packaging container which is space-saving in an empty state prior to having contents in, has good preservation effect on a two- component adhesive, is light in weight and easy to handle in use, and is not bulky after use, and lends itself to ease of disposal when discarded. SOLUTION: Flexible pouches 2, which are easy to unseal, are filled respectively with the two liquids for a two-component adhesive HP and sealed and packaged in a tapering composite container 1 consisting of a molded container exclusively of plastic or a product of paper and plastic sheet. A squeezing member by which the contents of the flexible pouches 2 can be squeezed out into the container 1, where necessary, may be integrally included in the package.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging material and a packaging form for a container for an adhesive, which comprises mixing two liquids immediately before use.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional packaging form. The two-liquid mixed type adhesive includes an epoxy resin adhesive, a polyurethane resin adhesive and the like, and two liquids (A liquid and B liquid) are respectively contained in the metal container M, and they are mixed and used immediately before use. It is a thing. In the case of packaging with the metal container M, it was difficult to treat the packaging container after use. That is, since the conventional metal container M has no taper, it remains bulky and cannot be reduced in volume after use as it is. To reduce the volume of an empty container,
There is a method of crushing with a dedicated crusher, but in the case where many adhesives are continuously used, it is possible to reduce the volume by preparing a crusher. However, it is not possible to have a crusher at every use site.

Further, the adhesive EP is A
The liquid and the liquid B are mixed and used. For this mixing, either one of the liquid A and the liquid B is designed to have a large capacity, and the other liquid is put in the space of this container. There was a method of using it as a mixing container. In this case, there is a waste of always maintaining a space during distribution or storage.
When a container having a volume corresponding to the internal volume is used, it is necessary to separately prepare a container or a container for mixing. The container or container for this mixing is a metal or plastic molded product, etc., and in many cases, it is washed and reused after use, which is a troublesome problem. In this way, the problem of disposal of metal containers has been pointed out at construction sites and the like, and containers that can be incinerated have been required. Two
As a container for liquid-mixing type adhesives, the appearance of a packaging container that is easy to use and easy to process after use has been awaited.

[0004]

The empty container before filling the contents is not bulky and has good storability of the contents of the two-component adhesive, is light in weight and easy to handle during use, and even after use. An empty container is not bulky and provides a technique regarding the material and form of the container that is easy to dispose of waste.

[0005]

Means for Solving the Problems A liquid and B of a two-liquid mixed type adhesive.
A two-liquid mixture characterized in that each of two liquids is filled in an easily-open flexible pouch and sealed, and then stored as an outer container in a single molded product made of plastic or a tapered composite container made of paper and a plastic sheet molded product. A container for mold adhesive, including integrally encapsulating a member having a squeeze function, which is used when the contents are taken out from the flexible pouch into the container, if necessary.

[0006]

1 is a perspective view and a plan view showing an embodiment of the present invention. FIG. 2 shows a container for two-component adhesive of the present invention. FIG. 3 shows an example of the shape of the pouch for a two-component mixed adhesive used in the present invention. FIG. 4 shows an example in which a squeeze function is provided on the lid of the outer container and an example of an accessory dedicated to squeeze in the package for a two-component mixed adhesive of the present invention. Two-component mixed adhesives are A and B
It is composed of liquid and is sealed separately until use. Immediately before use, the solution A and the solution B are mixed and applied to an object within a certain period of time, and the adhesive is cured while the adherends are overlaid and kept in a pressurized state. It adheres to the body. According to the present invention, the pouch in which the liquid A and the liquid B are hermetically packaged is housed in a plastic molding container or an outer container having a side wall made of plastic and paper and provided on a lid or a separate body having a function of squeezing. A container for a two-liquid mixed adhesive and a package for a two-liquid mixed adhesive obtained as described above.

In the present invention, a flexible pouch is used as a sealed packaging container for the adhesive. Before filling the contents, the flexible pouch is not bulky and can be said to be an extremely space-saving packaging container as compared with the conventional metal container M.
As the material constituting the pouch, it does not change the contents for a long period of time, and does not satisfy the conditions such as bag breakage and no pinhole generation until it is used during transportation, storage, etc. Don't Further, a shape or a characteristic adapted to the above-mentioned usage is required. The material of the pouch used in the present invention is a laminated film composed of a substrate having a barrier property and a sealant layer having a thermal adhesive property. The base material having a barrier property may be any as long as it has a function of blocking permeation of water vapor, air or other gas in the hermetically sealed contents, and satisfies the strength required for transportation, storage and the like. As the base material, simple substance,
It may be a laminate film having two or more layers. As a sealant with thermal adhesiveness, sealing and transportation of pouches,
Use a material that satisfies the seal strength required for storage, etc. and that does not react with the contents (does not alter the contents).
PET ₁₂ / ON ₁₅ / LLDPE ₆₀ (1) {abbreviation PET: polyester film, ON: biaxially stretched nylon film, LLDPE: linear low-density polyethylene film, numbers are each film Shows the thickness μm, and / between each layer shows the laminating surface} In the configuration example of (1) above, the base material is PET ₁₂ / ON ₁₅ , and the sealant is LLDPE ₆₀ .

Next, the shape of the pouch 2 will be described. Since the content EP of the present invention is a substance having a strong adhesiveness, it takes time to take out by spontaneous fall when taking it out from the pouch 2, and the whole amount cannot be taken out because it sticks to the inner surface of the pouch. Therefore, since the pouch 2 is flexible, when the pouch 2 is taken out, the pouch 2 is handled and squeezed out so that the pouch 2 can be taken out quickly and the remaining amount in the bag can be reduced as much as possible. Although the squeezing of the adhesive from the pouch may be performed by hand, the squeezing function according to the present invention can be used. The function of squeezing out according to the present invention may be added to the lid 3 of the outer container 1 as shown in FIG. 4, or a dedicated accessory 4 for squeeze may be attached.
The shape of the pouch 2 may be any shape as long as it has a good hermeticity and can be easily stored in the outer container 1. However, in consideration of the squeezing out, the handle hole P is provided at the tip of the pouch, and the contents are discharged. A pouch such as a pouch (FIG. 3A) having an outlet provided by a deformable seal and further provided with a notch N for opening the pouch and the like is preferable.

The outer container 1 used in the present invention is a plastic single molded product or a composite container of paper and plastic. When the plastic single container is used, it can be formed by injection molding, or by sheet forming by vacuum or pressure forming. As the sheet used for sheet molding, polystyrene, acrylonitrile-styrene resin,
Examples thereof include acrylonitrile-butadiene-styrene resin, polycarbonate resin, polypropylene resin and the like.
Resins used for injection molding include low density, medium density,
Examples include high-density polyethylene, polypropylene, polystyrene, polyester, acrylonitrile-styrene, acrylonitrile-butadiene-styrene copolymer, and polycarbonate.

The outer container 1 in the present invention is more preferably a composite container made of a combination of paper and plastic. FIG. 2A shows an example of the shape of the two-liquid mixed adhesive container, and FIGS. 2B to 2D show examples of the shapes and structures of other two-liquid mixed adhesive containers. Note that FIG. 2D is an enlarged view of the Z portion in FIG. Single plastic molded products have good productivity and can be incinerated after use.
The strength is weak and it is difficult to print on the side of the container, resulting in poor design. Although it may be considered to be an injection-molded product, the cost of the container increases and the amount of plastic increases, so incineration is somewhat difficult. The composite container 1 can combine the respective characteristics of the rigidity of paper and the water resistance (liquid retention) of plastic, as compared with the plastic single container. There are various methods for manufacturing the composite container, and any method may be used. For example, after performing a predetermined printing on the front surface of a sheet of paper or a rolled-up paperboard and applying the heat-melting adhesive HM to the back surface thereof, the side wall portion (c-1), the bottom portion (c-2), etc. Punch and insert into the mold of vacuum forming machine. At this time, the body paper may be previously attached to the mold by being tube-shaped in a bottomless cup shape. Then, when the heated plastic sheet is vacuum-formed in the mold, the heat-melting adhesive HM applied to the back surface of the paperboard is melted by the residual heat at the time of forming the sheet to exhibit adhesiveness, and the plastic sheet 11 and Sticky and generally stick after a few hours. As the hot-melt adhesive HM having such characteristics, a low-temperature adhesive hot-melt coating that can be bonded by the heat of a plastic sheet heated during integral molding in a mold is suitable. The hot-melt adhesive HM may be applied to the entire surface of the paperboard or may be applied partially. Alternatively, the plastic sheet alone may be molded in advance into a container, and then the paperboard punched into a predetermined shape may be attached to the side surface and the bottom surface of the molded container with an emulsion adhesive or the like. There are various plastic sheets that can be used in the vacuum forming method, and the following sheets can be mentioned. For example, polyethylene terephthalate (PE
T), polyvinyl chloride (PVC), polypropylene (PP), polyacrylonitrile (PAN), polycarbonate (PC) and other single sheets, or the improvement of the barrier properties of sheet-like articles can be easily obtained by laminating them. A laminated sheet formed by suitably stacking the single sheets of (1) or a sheet having high barrier properties may be laminated on these single sheets to obtain a sheet having barrier properties. Further, the plastic sheet may be colored. Examples of the sheet having a barrier property include PP / EVOH / PP PET / EVOH / PET PC / PVDC / PP. (EVOH: saponified product of ethylene and vinyl acetate copolymer, PVDC: vinylidene chloride resin) The number of laminated layers is not limited to three layers as shown in the examples, but two layers obtained by combining the above single materials, or A laminated sheet having four or more layers may be used. Examples of the paperboard used in the composite container include coated cardboard and the like, and the thickness of the paperboard is selected in consideration of the weight when stacked and the like. Examples of the heat-meltable adhesive HM that can be used in the present invention include ethylene / vinyl acetate copolymer,
Block polymers such as styrene / isoprene / styrene and styrene / butadiene / styrene are used, but ethylene / vinyl acetate copolymers and the like are preferable in terms of handling. As a method of forming the composite container, there is thermoforming such as vacuum forming or pressure forming (hereinafter referred to as a vacuum forming method). Alternatively, the container may be manufactured by an injection forming method. The blank of the paperboard to be laminated on the side wall and / or the bottom of the container is printed on the front surface, the heat-melting adhesive HM is applied on the back surface, and the blank is inserted into the mold of the vacuum molding machine or the injection molding machine and clamped. Then, the injection resin may be press-fitted to bond the blank and the resin to form a composite.

In the present invention, the flange F is provided on the container body.
P is provided, and the lid 3 is joined to the flange FP. The lid 3 joined to the container flange FP is a general term for joining by heat sealing, joining by physical fitting, etc., but in the present invention, fitting by cost is preferable. The fitting-type lid 3 is obtained by molding using the same manufacturing method and material as the above-mentioned plastic sheet molded product. For example, the lid 3 in the present invention is a drop lid in which an undercut portion FL that can be fitted to the tip portion of the flange FP provided in the container body 1 is provided in the skirt portion that is the peripheral edge of the lid. The lid 3 may be made by a vacuum molding method or an injection molding method. Further, by adopting the drop lid structure, the resistance to the pressure from the side increases due to the rib effect. It should be noted that the lid 3 can be provided with irregularities R at any location. The unevenness R is preferable because it prevents curling due to distortion of the lid 3 at the time of molding and further increases resistance to the lateral pressure.

The two-liquid mixed type adhesive adhered to the inner surface of the flexible pouch sticks to the inner surface and it takes time to squeeze out by hand. Therefore, a lid having a function of easily squeezing out the adhesive adhered to the inner surface of the pouch without leaving a residual liquid, or a separate body having a squeeze function is set.

In order to add a squeeze function to the lid, a gap T is provided in the lid, and the opened pouch 2 is pulled up from the gap T, whereby the adhesive EP of the contents is squeezed out. An example of a separate squeeze is shown in FIG.
As shown in (b), the squeeze arms L1 and L2 are integrally formed via a hinge, and an engaging portion that can engage with the tip ends of the respective arms is formed. When the squeeze arms L1 and L2 are fitted to each other at the fitting portion, a minute gap T is formed between L1 and L2, and a label seal provided with a handle hole P of the pouch 2 in this gap. The pouch 2 is handled and the adhesive EP of the contents is squeezed out by putting a finger in the hole P for gripping the part and pulling up the pouch 2. After taking out the liquids A and B into the outer container 1 and thoroughly mixing them with a spatula for stirring,
use.

As a method for accommodating the pouch or the like of the container for a two-liquid type adhesive according to the present invention, the outer container is partitioned as necessary, and two bags of the pouch are put in (the spatula for stirring is used). (It may be set), if there is an accessory squeeze tool, it may be stored at a predetermined position, a lid may be fitted, a seal label may be attached, or a shrink film may be used to entirely overlap.

[0015]

[Examples] The contents were used as an epoxy adhesive, and 1 kg of a main agent and 1 kg of a curing agent were filled in a pouch. The material composition of the pouch used in this example is ON ¹⁵ / SiO _x PET ¹² /
LLDPE ⁷⁰ was used. {Abbreviation ON: Biaxially stretched nylon film, SiO _x PET: Silica evaporated polyester film, LLDP
E: Each layer of the linear low-density polyethylene film (density 0.910) was laminated by a dry lamination method using an isocyanate adhesive. The shape of the pouch is shown in FIG.
A pillow type pouch with the same shape as 1), with a label seal provided with a handle hole on the upper part of the bag, and a deformable seal part on the lower part of the bag to ensure that the contents can be easily poured into the outer container. An opening V notch N was provided in S5 and the deformed seal portion. For filling the contents, a pillow type bag making and packaging machine is used, and after the heat-bonding bar at the seal cut portion is the deformed seal type as described above, the back seal S4 and the deformed seal S5 are formed, and then the contents EP are filled. Then, the label seal S3 was applied. The handle hole P was provided in a separate process. Due to the deformed seal portion provided at the lower portion of the pouch 2, the spout portion is formed to have a narrow spout, and a V notch N for opening is formed in the opening planned portion of the narrowed portion. When taking out the contents, by opening the pouch from the V notch N, the contents can be taken out without diffusion. The contents mix the main ingredient and hardener in the outer container,
In this example, the outer container was prepared as a composite container of paper and plastic sheet molding. The outer container will be described below. The outer container body 1 has the same shape as that of FIG. 1A, which is a circular cup shape, and has a tapered side wall. The manufacturing method of the container is that the coated ball 350 g / m ² is surface-printed in advance, and the back surface is
A heat-adhesive resin was applied and punched into a shape as shown in FIG. 2C as a side wall portion and a bottom portion of the outer container of this example. Next, the side wall and bottom blanks were inserted into a molding die of a vacuum forming machine to form a PP sheet of 1.0 mm and adhered to the blank. The lid was made by sheet molding. The squeeze 4 shown in FIG. 4 (b) is fitted to the inside of the outer container flange, removed when the adhesive is used, the opened pouch of the pouch is sandwiched, and a finger is put in the handle hole of the pouch to remove the contents. I squeezed it into an outer container. The adhesive was thoroughly stirred using a stirring spatula and used for the intended purpose. The empty outer container, which has been used up with the adhesive, can be stacked and treated by incineration. Note that the pouch also became flat after squeezing the contents and was disposed of by incineration. By injection molding with polypropylene resin, it is molded into the shape of FIG. 4 (b), and the gap T for sandwiching the pouch and squeezing is set to 0.
It was 2 mm. In this embodiment, the outer container is a pouch,
After storing the stirring spatula and partition plate, insert the squeeze inside the outer container, and fit the lid, then 20μ
A polypropylene film (OPP film) having a thickness of m was shrink-wrapped.

[0016]

In addition to the flat pouch 2 before filling according to the present invention, the outer container before accommodating the adhesive-filled pouch has a taper on the side wall of the container. The container body according to can be stacked before or after use, whereas the conventional metal can requires the same space as the filled product even when it is empty, whereas the packaging material before filling occupies it. Space is scarce. The two-component mixed adhesive container and package according to the present invention can be used as a mixing container as well as a composite container made of paper and plastic as the outer container 1, and can be incinerated after use. Since it is possible, there is no need to transport it to a waste disposal site like metal cans. At the time of use, since the flexible pouch is filled with the adhesive, it can be squeezed out by squeeze, and as a result, the residual liquid in the pouch is almost eliminated, and the packaging container has no waste. Since it was a metal can packaging conventionally, it was bulky in an empty container after use, but the pouch after use returned to a flat shape, and the main body of the outer container 1 could also be stacked. The container and the packaging body have the same merit of saving space after use and before filling. In addition, the outer container, pouch, lid, and squeeze can be incinerated and are easily processed.

[Brief description of drawings]

FIG. 1 is a container for a two-component mixed adhesive according to the present invention and 2
The figure which shows the Example of the package body for liquid mixing type adhesives.

FIG. 2 is a diagram showing an example of the shape and configuration of an outer container for a two-liquid mixed adhesive according to the present invention.

FIG. 3 is a view showing an example of the shape of an adhesive pouch that can be used in the present invention.

FIG. 4 is an example of squeezing used in the present invention.

FIG. 5 is a conventional container for a two-component mixed adhesive.

[Explanation of symbols]

 1 outer container 2 pouch 3 lid 4 squeeze 5 stirring spatula 6 partition plate 11 plastic sheet molded into a composite container 21 paperboard laminated as a composite container EP adhesive P handle hole S seal part N pouch opening notch C pouch opening Line L Squeeze arm H Squeeze hinge K Squeeze engaging part T Gap M Metal container G Spout HM Hot melt adhesive

Claims (2)

[Claims] 1. An easy-open flexible pouch in which two liquids of a two-liquid mixed type adhesive are respectively filled and sealed, and stored as an outer container in a plastic single molded product or a tapered composite container made of paper and a plastic sheet molded product. A container for a two-component mixed adhesive characterized in that 2. A two-liquid mixing type adhesive, which integrally includes a member having a squeeze function used when taking out viscous contents from the flexible pouch into a two-liquid mixing type adhesive container. A package for adhesives.