JP3966965B2 - Refillable packaging container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refillable packaging container whose contents are viscous.
[0002]
[Prior art]
Conventionally, packaging that does not require refilling, that is, packaged once, has been used as stand-out pouches, three-sided seal pouches, pillow bags, etc. It is used for.
In addition, as refill packaging forms that are currently used, bags such as stand pouches and pillow bags are mainly used in the toiletry field (shampoos, detergents, etc.).
On the other hand, it is desirable that the packaging container in the case where the contents are viscous and is used so as to be taken out many times is rigid and has a large takeout opening (opening).
Specifically, a wide-mouth glass bottle, a metal can equipped with a full open top, or a plastic cup-shaped or tray-shaped molded container is known.
[0003]
[Problems to be solved by the invention]
In the above, the glass bottle has features such as good preservation of contents, glossy surface and texture, and can be made into a transparent container, but it is heavy, cracked, difficult to incinerate and is not disposed of. It is a material with problems such as difficulty. In addition, metal cans are excellent in the preservability of the contents, but are still difficult to incinerate and are difficult to dispose of. For these materials, plastics are often used because of their freedom of molding, light weight as containers, and low cost manufacturing. The shape can be provided with, for example, a butter knife storage function or a feature of the lid structure, and is widely used as the most easy-to-use material.
However, when the plastic molded container is a viscous material mainly for food and is used as a container for edible or used contents several times or several tens of times, it is a preferable container for use. In general, since appropriate robustness and recloseability are required, a plastic thick-walled container and a rigid lid are also used. However, such a rigid container is discarded every time its contents are used up.
However, due to the processing problems due to the recent increase in the amount of garbage, there are many requests for reducing the volume and volume of packaging waste, and the plastic molded container has also been required to improve the above problems.
Therefore, the present invention exhibits the necessary physical properties until the use of the contents as a packaging material, and the packaging container after use saves resources and reduces the volume of garbage by reducing waste. It is providing the packaging container which can contribute to.
[0004]
[Means for Solving the Problems]
The above problems can be solved by the present invention described below.
That is, the invention described in claim 1, a container refillable comprising a lid which can be removably fitted in the opening edge of the container body and the container body for containing the contents of the gum or the like, the container body, by co-extrusion method or lamination method, peelably a container that is vacuum or pressure forming using a sheet which is formed into a film at least two or more layers, the sheet used for the molding, molding into a container from the inside when the polypropylene layer, an adhesive layer, an ethylene - vinyl alcohol copolymer layer, adhesive layer, a polystyrene layer (release surface), the polypropylene layer is being laminated in this order, the contents of such a viscous substance when finished out of the inner container which the container body is in contact with the contents, is peeled separated outer container, the inner container is discarded after peeling separation of refill another the contents is housed Vessel can insert set into the outer container and inner container for the refill is formed into a shape that matches the inner shape of the outer container, was filled with viscous material such as an upper opening is sealed easy-open It comprises a refillable packaging container characterized by
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The refillable packaging container of the present invention comprises a container main body that stores viscous materials and the like and a lid that can be detachably fitted to the outer edge of the opening of the container main body.
In particular, after the container body is formed by sheet molding from a multilayer sheet exhibiting easy peelability between layers, and the contents are used, the inner container that is in contact with the contents is peeled between the layers, and only the inner container is removed. The inner container for refilling which is discarded and formed into the same shape as the inner container and filled with the contents is fitted into the outer container.
FIG. 1 shows an embodiment of a refillable packaging container according to the present invention, (a) perspective view, (b) X ₁ -X ₁ part sectional view, (c) Y part enlarged view, (d) refilling. It is sectional drawing of the inner container for use. FIG. 2 explains refilling in a refillable packaging container according to the present invention, (a) a perspective view showing an outer container in a state where the inner container is peeled and removed from the container body, and (b) a lid of the inner container for refilling. perspective view showing the removed state, to insert the (c) X ₂ -X ₂ parts cross-sectional view, (d) X ₃ -X ₃ parts cross section, the inner container of the refill in the outer vessel (e) the container body, It is sectional drawing which shows the set state. FIG. 3 is a cross-sectional view showing a configuration example of a multilayer sheet used for forming the container body of the refillable packaging container of the present invention. FIG. 4 is a cross-sectional view showing an example of the material configuration of the bottom container of the refill container of the present invention.
[0006]
As described above, the present invention relates to a refill container P which is a container for storing a viscous material as a content, and includes a container body 1 and a lid 4 as shown in FIG. The said container main body 1 is shape | molded by methods, such as vacuum forming and pressure forming, using the sheet | seat comprised from at least 2 layers or more. When the contents C are used up, the container body 1 can be peeled between the sheets, and the outer side of the container body 1 is in contact with the rigid outer container 3 and the contents. And can be separated.
Only the inner container 2 is discarded at the stage where the contents C have been taken out, and the outer container 3 is used again. As described above, since the outer container 3 is used repeatedly, it is desirable that the outer container 3 has appropriate rigidity and robustness. After the inner container 2 is separated from the outer container 3 and discarded, as shown in FIG. 2, the refill inner container 5 filled with the contents C described later is inserted and set inside the outer container 3. To use again. Therefore, it is desirable that the refill inner container 5 is similar to the inner container 2 used above in terms of shape and softness.
[0007]
The molded sheet used for molding the container body 1 is composed of at least two or more multilayer sheets, and is molded into a cup shape or a tray shape having an opening in the upper portion by a normal sheet molding method such as vacuum or compressed air. Thus, when the contents C are used up, the inner container 2 and the outer container 3 can be separated.
As described above, various experiments were conducted on the configuration of the sheet that can be formed into the cup shape or the tray shape and can be separated between the layers of the container constituent material after use.
As described above, the layer structure of the sheet used for forming the container body 1 is designed so that the formed container body 1 is made of a material that allows the outer container 3 and the inner container 2 to be peeled off. As an example of a specific method, it is possible to utilize the property of exhibiting releasability (hereinafter, this surface is referred to as a separation surface SS) by joining different types of materials by co-extrusion and sheeting the surfaces of the different types of materials. it can. As an example of the combination of the different materials, for example, as shown in FIG. 3, when a coextruded sheet having a combination of polystyrene 11 and polypropylene 10 is formed into a film by an ordinary multilayer extruder, the interface between the polystyrene 11 and polypropylene 10 is formed. Becomes weakly adhesive, and a container formed by using this sheet can easily separate the inner container 2 and the outer container 3 required by the present invention. In the above example, the interface between polystyrene and polypropylene peels off, but the presence of this peeling surface SS makes it possible to minimize the amount of packaging container waste after use.
The peeling surface SS may be a different method from the method of sheeting different types of materials by coextrusion as described above. For example, a method of dry laminating as a composition in which the adhesive strength of an adhesive used is reduced when laminating sheets or films formed separately by thermocompression, or laminating various single or multilayer sheets in combination. It may be.
[0008]
The layers constituting the inner container 2 and the outer container 3 of the container body 1 or the container body 6 of the inner container 5 for refilling contribute to the quality retention of the contents C as shown in FIGS. Properties, for example, multiple layers including a gas barrier layer may be used. EVOH layers 13 and 23 were used as gas barrier layers, and the surfaces in contact with the contents were polypropylene layers 15 and 25. For adhesion between both surfaces of the exemplified EVOH layers 13 and 23 and the other resin layers, an adhesive layer 11, an adhesive layer 14, an adhesive layer 22, and an adhesive layer 24 are provided. The resin constituting the adhesive layer can be sufficiently adhered by using a normal adhesive resin.
[0009]
The refillable packaging container P of the present invention is designed in its shape by the type, capacity, or device for taking out the contents C, but particularly when the contents C are viscous. In order to make it easy to take out the contents C, the container main body 1 has a cup shape or a tray shape opened at the top. Specific examples of shapes include a rectangular shape and an oval shape in a plan view for containers such as butter and margarine, and a round shape or the like for a container such as jam or peanut. Can be applied without being limited to the shape.
And in containers, such as a butter and a margarine, a notch part may be provided in the container main body 1 and / or a lid | cover so that a lid may be made with a butter knife put in the container.
Suitable as a container for contents to be dispensed over and over, including non-food products such as butter, margarine, jam, peanut butter, and other non-food products such as car wax, shoe ink, and cosmetic cream It can be done.
And it can be implemented with an appropriate internal volume of these contents and a shape that is easy to use. For example, in the case of soft margarine, there is an oval container generally marketed as a butter container or a margarine container. Other jams are sold in round cups. The present invention can be applied to any shape as long as it is a container having these shapes, that is, a forward taper and can insert and set an inner container for refilling.
[0010]
The lid 4 of the refillable packaging container P of the present invention is to be repeatedly used together with the outer container 3 of the container body 1, and is therefore preferably rigid and robust. Or, in order to display other necessary items, etc., those having printability or decoration suitability are selected.
The lid 4 may be molded by sheet molding as in the case of the container body 1, but can also be molded by injection molding or the like in order to obtain a rigid lid.
As the lid 4, it is only necessary to prevent the opening from being contaminated by dust and have recloseability during use.
In addition, an undercut portion 8 is provided on the skirt portion suspended from the peripheral portion of the lid so as to engage with the flange portion provided on the peripheral portion of the container body 1, and reliably engages with the front flange portion when not in use. I can leave it to you.
[0011]
The outer container 3 from which the inner container 2 has been peeled and removed functions as a container again by inserting and setting the inner container 5 for refilling.
The inner container 5 for refilling in the refillable packaging container P of the present invention is required to maintain the quality of the contents C from the time of packaging until the outer container 3 is fitted and set. Therefore, the container body 6 and the lid 7 are also required for the inner container 5 for refilling.
The container body 6 of the inner container 5 for refilling needs to have a barrier property necessary for the contents C and can be formed into a shape that can be fitted and set to the outer container 3 of the container body 1. Further, the lid 7 of the refill container 5 can be sealed by heat sealing or the like at the flange portion of the container body 6 of the refill inner container 5 and from the flange portion of the refill inner container 6 at the time of refill. It is preferable that it is easy to open.
The material of the film or sheet used as the container body 6 and the lid 7 of the refill inner container 5 can be laminated with a film or sheet having suitable physical properties in order to impart physical properties necessary for the storage stability of the contents. .
If the material of the inner container 5 for refilling is too flexible, it is difficult to use because it is displaced from the outer container 3 when the content C is taken out. Therefore, it is preferable that the container body 6 of the inner container 5 for refilling is made of a material having moderate rigidity. Further, the outer container 3 and the container body 6 of the inner container 5 for refilling are fixed with a double-sided tape W or the like as shown in FIGS. 2 (a), (c) and (e). Makes it easier to use.
[0012]
As described above, the container body 1 is molded using a vacuum or pressure forming method. In addition, the lid 4 only needs to have a reclose function, a content drying prevention function, and an adhesion prevention function for dust in the outside air, and the material is not particularly selected.
The inner container 5 for refilling may be a soft material that functions to maintain the quality of the contents C, as long as it can be molded into the same shape as the inner container 2, The roll film can be set in an automatic wrapping machine, and the processes from forming, filling and sealing the lid film can be performed in-line.
[0013]
As the inner container 5 for refilling, in order to be inserted and set in the outer container 3, it must be formed to match the inner surface shape of the outer container 3. Further, double-sided tape W or the like is attached to the bottom surface of the refill inner container 5 or the inner surface of the outer container 3 so that the inner container 5 for refill and the outer container 3 do not deviate in use after the inner container 5 for refill is inserted. It is desirable to attach and fix by crimping at the time of setting.
In order to keep the quality of the contents C stored in the inner container 5 for refilling until the time of use, and to store and circulate without deformation so that the shape can be fitted to the container body when refilling. Although not provided, the refill container 5 is preferably stored in a carton or the like.
[0014]
The refill container 5 of the present invention removes the inner container 2 (soft container part) from the outer container 3 by peeling off the separation surface SS every time the contents C are used up, and the refill contents prepared separately. The container 5 is inserted and set in the outer container 3. The lid 4 is also reusable.
Therefore, in the refillable packaging container P of the present invention, the portion of the packaging container that is disposed of after the use of the contents C is only the inner container 2 portion, and therefore, the amount of waste disposal is reduced. Can contribute. Furthermore, since the inner container 2 can be easily crushed by hand, it also shows the effect of reducing the volume of dust.
[0015]
The refillable packaging container P of the present invention is a food that can be eaten several times, such as butter, margarine, jam, butter peanuts, chocolate paste, boiled seaweed, etc., cosmetic creams, and pasty hair styling It can also be used for the packaging of non-food products such as shoe cream or car wax.
[0016]
【The invention's effect】
The refillable packaging container of the present invention makes it possible to repeatedly use the lid of the container body, which is required at the time of use, and can be used repeatedly, and has the packaging properties necessary for the production, storage, and distribution stages of the contents. It was possible to provide an inner container for refilling. As a result, the outer container and the lid can be used repeatedly. As waste after use, if the carton is used for the inner container, the lid for the refill inner container, and the inner container for refill, the carton Since it is not necessary to discard the portion corresponding to the outer container of the container body and the lid, there is an effect of reducing the amount of discharged waste, and the inner container can be easily crushed by hand due to its softness. It is also possible to reduce the volume as garbage. Moreover, the refillable packaging container of the present invention including the inner container for refilling has been used many times, so that the raw materials used for the packaging material are reduced, resulting in resource-saving packaging.
By reusing the outer container and lid of the main body container repeatedly (reuse) and purchasing only the inner container for refilling, the consumer can purchase only the necessary packaging materials, saving purchase costs. can do.
[Brief description of the drawings]
FIG. 1 shows an embodiment of a refillable packaging container according to the present invention, (a) perspective view, (b) sectional view of X ₁ -X ₁ part, (c) enlarged view of Y part, (d) refilling. FIG. 2 is a cross-sectional view of an inner container for use in the present invention. FIG. 2 explains refilling in a refillable packaging container according to the present invention. (A) Perspective view showing an outer container with the inner container peeled and removed from the container body. perspective view showing a state in which the removal of the lid of the inner container of use, (c) X ₂ -X ₂ parts cross-sectional view, (d) X ₃ -X ₃ parts cross-sectional view, refill the outer container (e) the container body FIG. 3 is a cross-sectional view showing a state in which the inner container is inserted and set. FIG. 3 is a cross-sectional view showing a configuration example of a multilayer sheet used for forming the container body of the refillable packaging container of the present invention. Sectional view showing an example of the material composition of the container body of the inner container
P Refillable packaging container C Contents SS Release surface W Double-sided tape 1 Container body 2 Inner container 3 Outer container 4 Lid 5 Inner container for refill 6 Container body of inner container for refill 7 Lid of inner container for refill 8 Undercut 10 Polypropylene layer 11 Polystyrene layer 12 Adhesive layer 13 EVOH layer 14 Adhesive layer 15 Polypropylene layer 21 Polystyrene layer 22 Adhesive layer 23 EVOH layer 24 Adhesive layer 25 Polypropylene layer

Claims (1)

A container refillable comprising a lid which can be removably fitted to the container body for accommodating the opening edge of the container body and the contents of the viscous product such as container body, by co-extrusion method or lamination method A container formed by vacuum or pressure forming using a sheet formed into a multilayer of at least two layers so as to be peelable, and the sheet used for the molding is formed from a polypropylene layer, an adhesive layer from the inside when formed into the container , An ethylene-vinyl alcohol copolymer layer, an adhesive layer, a polystyrene layer (peeling surface), and a polypropylene layer are laminated in this order, and when the contents such as the viscous material have been dispensed, the container body has the contents described above. and inner container in contact with the object, is peeled separated outer container, the inner container is discarded after peeling separation, the inner container of the refill in another the contents is housed in insertion set in the outer container And, the inner container for the refill is formed into a shape that matches the inner shape of the outer container, it was filled with viscous material such as, refillable, characterized in that the upper opening is sealed easy-open Packaging container.

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