JP6878868B2 - Liquid packaging container - Google Patents

Description

The present invention relates to a liquid packaging container. In particular, it relates to a liquid packaging container with a hand pump, which can be applied to liquid contents such as shampoo and conditioner.

So-called pouches, which are a type of packaging container, are widely used as simple substances or laminates based on a plastic film, and various forms are used for a wide range of purposes. It has become an indispensable part of life.

Pouches are also used as packaging containers for liquids, for example, and are widely used in the food field such as beverages and retort pouch foods. In the field of daily necessities and toiletries, various products are available on the shelves of supermarkets, drug stores, and convenience stores. Is crowded. For example, it is also used in refill containers such as shampoos and conditioners.

The advantages of pouches are that they are cheaper than containers such as cans and bottles, that they can be handled with detailed material design depending on the required quality, or that they are lightweight and space-saving before filling the contents and in distribution and storage. Can be mentioned. The pouch can also be said to be environmentally adaptable from the perspective of reducing waste.

In addition, high-definition printing on the layer that can be seen from the surface can improve the image of the product, and it is possible to display the necessary information about the contents. It is also a source of information.

Some pouches that have independence have been commercialized and are generally called standing pouches. By giving it independence, it has been made more convenient in handling and taking out the contents.

Generally, a bottle container with a hand pump is widely used as a packaging container for shampoos and conditioners that have independence, but when this bottle container is made disposable, it is said to be the environment-friendly type mentioned above. I can't say.

Further, the suction pipe of the pump has a problem of so-called liquid residue, which is not sucked up well when the contents are reduced to the bottom part.

On the other hand, the patent document proposes to provide a cross passage at the bottom of the blow bottle, but even in this case, the peripheral edge of the bottom of the blow bottle is low, so that the liquid content is spilled. There was a problem that it remained, and it could not be said that it was a sufficient solution as a countermeasure for liquid residue.

Japanese Unexamined Patent Publication No. 2001-10683

The present invention has been made in view of such a situation, and an object of the present invention is to provide a packaging container for liquid, which is a packaging container with a hand pump, is environmentally friendly, and has a small amount of liquid residue.

As a means for solving the above problems, the invention according to claim 1 is a self-supporting liquid packaging container.
The liquid packaging container is composed of a body, a bottom, and a hand pump.
The body portion forms the outer circumference of the packaging container in a tubular shape, and forms the outer circumference of the packaging container.
Further, the body portion and the bottom portion are composed of a heat-sealable plastic film alone or a laminated body using the plastic film as a base material and provided with a heat-sealable layer on at least one surface.
The bottom is extensiblely folded and heat-sealed and connected to the bottom of the fuselage.
The upper part of the body is bonded to the inside of the body to form a shoulder.
The hand pump has a hand push portion and a nozzle protruding from the central portion of the shoulder portion to the upper part of the packaging container, and also has an adhesive portion with a tubular upper end portion of the body portion, and also has a bottom portion inside the packaging container. A plastic molded product that has a suction pipe that reaches the central part and has a suction port at the tip , and is connected to them.
The suction port reaches a position close to the central part of the bottom, and is
該手press portion and said siphoning pipe, Ri movable der to 5~20mm downwardly relative to the adhesive portion, pushed further down the central portion of the tip of the siphoning pipe bottom when moving to the maximum downward It characterized Rukoto such as that formed form a liquid pool,
It is a packaging container for liquids.

The invention according to claim 2 is characterized in that the movement is due to a screw structure provided in the hand pump.
The liquid packaging container according to claim 1.

Further, according to the third aspect of the present invention, the liquid packaging container has a body width of 80 to 300 mm, a body height of 120 to 400 mm, and a folding width of the bottom portion of 20 to 200 mm. The liquid packaging container according to claim 1 or 2, characterized in that it is 70 mm.

Further, according to the fourth aspect of the present invention, the laminate based on the plastic film includes a gas barrier layer composed of a vapor-deposited layer of an inorganic compound, a coating layer of an inorganic compound, or both. The liquid packaging container according to any one of claims 1 to 3, characterized in that.

According to the present invention, it is possible to provide a packaging container with a hand pump, which is environmentally friendly and has a small amount of liquid residue.

That is, the liquid packaging container according to the present invention has a hand-push pump and has the same function as a generally used plastic bottle, but the body and bottom are made of a plastic film or a plastic film as a base material. It is composed of a laminate and is more environmentally friendly for disposal or incineration.

Further, in particular, according to the invention of claim 2, since the body, bottom, and hand pump parts constituting the liquid packaging container are connected by heat seals, the container can be assembled efficiently. It can have an advantage in the productivity of the liquid packaging container, and therefore also has an advantage in terms of cost.

Further, in particular, according to the invention of claim 3, a packaging container for liquid which is a packaging container with a hand pump, is environmentally friendly, and has a small amount of liquid residue is provided within the range of the dimensions described in claim 3. If there is, it is possible to realize and provide the product in a state in which the independence is not impaired and the operability is excellent.

Further, in particular, according to the invention of claim 4, it is a packaging container with a hand pump, and by including a gas barrier layer in the laminate, deterioration of the contents due to oxygen in the outside air, steam, or the like is prevented. It is effective in realizing a packaging container for liquids, which can be used and has excellent storage stability of the contents.

FIG. 1 is a perspective view and a schematic cross-sectional view for explaining an embodiment of a liquid packaging container according to the present invention. FIG. 2 is a schematic cross-sectional view of an embodiment of the connection between the push portion and the body portion of the liquid packaging container according to the present invention as viewed from the inside of the container. FIG. 3 is a schematic view for explaining the movement of the hand pump of the conventional liquid packaging container, the hand pump portion of the liquid packaging container according to the present invention, and the fixed position of the suction pipe. FIG. 4 is a schematic view for explaining the movement of the fixed position of the hand pump and the relationship between the packaging container and the bottom of the liquid packaging container according to the present invention. FIG. 5 is a perspective view and a schematic cross-sectional view for explaining an example and a comparative example of the liquid packaging container according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings. However, the present invention is not limited to the examples shown here. The present invention is limited by the claims.

FIG. 1 is a perspective view and a schematic cross-sectional view for explaining an embodiment of a liquid packaging container according to the present invention.

The liquid packaging container (100) according to the present invention is a self-supporting liquid packaging container, and is composed of a body (1), a bottom (2), and a hand pump (3). The body portion (1) forms the outer circumference of the packaging container in a tubular shape.

The body portion (1) is made of a heat-sealable plastic film alone or a laminated body using the plastic film as a base material and having a heat-sealable layer provided at least on the inner surface of the packaging container.

The bottom portion (2) is made of a heat-sealable plastic film alone or a laminated body using the plastic film as a base material and having a heat-sealable layer provided at least on the inner surface of the packaging container.

The bottom (2) is extensiblely folded into the lower part of the body (1) and heat-sealed and connected, and by expanding the bottom (2), the liquid packaging container (100) becomes self-supporting. It becomes possible.

The upper portion of the tubular body portion (1) is adhered to each other inside the body portion to form a shoulder portion (14). In the example shown in FIG. 1, the shoulder portion (14) is formed by the shoulder portion heat seal (13).

The hand pump (3) has a hand push portion (6) protruding from the central portion of the shoulder portion (14) to the upper part of the packaging container, and a nozzle (5), and also has a tubular upper end portion of the body portion (1). It has an adhesive portion (10) with the body, which is an adhesive portion of the container, and also has a suction pipe (4) that reaches the central portion (11) of the bottom inside the packaging container, and they are combined and connected. It is a plastic molded product.

The adhesive portion (10) with the body portion has a mechanism by which the hand-push portion (6) and the suction pipe (4) can move the fixed position with respect to the adhesive portion downward by 5 to 20 mm. The mechanism that enables downward movement may be, for example, a screw structure. In the example shown in FIG. 1, a screw structure (15) is provided on the upper portion of the adhesive portion (10) with the body portion.

Further, the hand pump (3) has a built-in pump mechanism that pumps up the content liquid of the liquid packaging container (100) and enables the liquid to be discharged from the nozzle (5). Further, the lower tip of the suction pipe (4) is provided so as to approach from the central portion (11) of the bottom of the container within a distance that can be moved downward by the screw structure (15), more preferably a distance just before contact. Can be done.

The body (1), bottom (2), and hand pump (3) of the liquid packaging container (100) can be connected to each other by a heat seal to form the liquid packaging container (100). it can.

If the body (1) and bottom (2) are heat-sealable plastic films, a heat seal is formed between the inner surface of the body (1) and the inner surface of the bottom (2). The bottom (2) of the liquid packaging container (100) can be sealed.

Similarly, if the body (1) and bottom (2) are laminates based on a plastic film, a heat-sealable sealant layer is provided on the inner surface of each container. A heat seal can be formed between the inner surface of the body (1) and the inner surface of the bottom (2), and the bottom (2) of the liquid packaging container (100) can be sealed. ..

Further, the body portion (1) and the hand pump (3) of the liquid packaging container (100) can be adhered to each other and connected to each other at the upper portion of the body portion. That is, in the example shown in FIG. 1, the body portion (1) and the adhesive portion (10) to the body portion are connected by a heat seal (7) to the body portion.

The body portion (1) is also heat-sealed between the front side body portion and the back side body portion at the end portion of the tubular upper portion, and the upper portion is sealed by the shoulder portion heat seal (13). Further, the front side body portion and the back side body portion can form a tubular shape by heat sealing on the side surface of the body portion.

The shoulder heat seal (13) forms the shoulder portion (14), and the portion of the upper center portion inside the container, which is continuous with the shoulder heat seal (13), is the body of the hand pump (3). The hand pump (3) is fixed by heat-sealing to the adhesive portion (10) to the portion, and the upper part of the liquid packaging container (100) is sealed.

Further, the nozzle (5) is connected to the hand-pushed portion (6) protruding from the central portion of the shoulder portion (14) to the outside of the upper part of the packaging container, and the hand-pushed portion (6) is pressed downward with a finger to push it down. The pump mechanism built into the hand pump (3) allows the liquid content from the nozzle (5) to be removed.
Liquid packaging container (100) Can be taken out to the outside.

Initially, the hand pump (3) has the hand push portion (6) and the suction pipe (4) fixed at the highest positions, but the screw structure is provided above the adhesive portion (10) with the body. (15) makes it possible to move the hand-pushed portion (6) and the suction pipe (4) by pushing them down 5 to 20 mm with respect to the bonded portion.

Therefore, even when the liquid of the contents is taken out and the liquid level (9) gradually lowers to the liquid level (9') or further lower and approaches the central portion (11) of the bottom. By moving the fixed position of the hand-pushed portion (6) and the suction pipe (4) downward by, for example, a screw mechanism (15), the suction port (12) of the suction pipe is moved to the liquid level (9'). It is possible to bring it further down, and it is possible to continue stable suction and suction even if the liquid level drops.

Further, when the fixed positions of the hand-pushed portion (6) and the suction pipe (4) move downward as much as possible, the suction port (12) reaches the bottom surface and further pushes down the central portion (11) of the bottom portion. In addition, the liquid at the bottom gathers at the central portion (11) of the bottom to form a liquid pool, and the liquid can be sucked up from the suction port (12). As a result, it is possible to further reduce the amount of liquid remaining.

Further, the liquid packaging container (100) in the present invention is compared with a plastic bottle or the like because the body portion (1) is a heat-sealable plastic film alone or a laminated body based on the plastic film. It is not bulky and lightweight, and is more environmentally friendly in situations such as disposal and incineration.

FIG. 2 is a schematic cross-sectional view of an embodiment of the connection between the push portion and the body portion of the liquid packaging container according to the present invention as viewed from the inside of the container.

This cross-sectional view shows a view of a part of the hand pump (3) and the body (1) from the inside of the liquid packaging container (100) from the bottom to the top. From the back side of 2, the hand push portion (6) and the nozzle (5), the adhesive portion with the body portion (10), the shoulder heat seal (13), and the suction pipe (4).

Further, in the example of FIG. 2 shown here, the adhesive portion (10) with the body portion is connected to the body portion (1) by a heat seal (7) with the body portion, for example, the body portion. The portion (10) bonded to the portion can have a boat shape as shown here. Due to this boat shape, the liquid packaging container (100) can be sealed by heat sealing more stably and firmly than a simple circular shape.

FIG. 3 is a schematic view for explaining the movement of the hand pump of the conventional liquid packaging container, the hand pump portion of the liquid packaging container according to the present invention, and the fixed position of the suction pipe.

In the figure shown in FIG. 3, (A) is an example of a hand pump used in an existing product, that is, a bottle-type liquid packaging container. Here, since the position of the parts of the hand pump is fixed, the position of the suction pipe is also fixed, and the position of the suction port is always constant.

In the example shown in FIG. 3, (B) is an example of a hand pump (3) used in the liquid packaging container (100) according to the present invention. This example is the initial state in which the contents are filled in the actual liquid packaging container (100).

That is, the screw structure (15) is provided on the adhesive portion (10) with the body portion, and the hand-push portion (6) is at a position 5 to 20 mm higher due to the screw structure (15). However, in this state, the usability of taking out the content liquid by pressing the hand-pushed portion (6) is the same as that of the existing product, that is, (A).

In the example shown in FIG. 3, (C) is an example of the hand pump (3) used in the liquid packaging container (100) according to the present invention. In this example, it is mounted on an actual liquid packaging container (100), and the positions of the hand-push portion (6) and the suction pipe (4) are slightly moved downward by the screw structure (15). There is.

In the example shown here, the position of the adhesive portion (10) with the body portion is unchanged in the vertical direction, and the screw structure (15) is moved downward so as to enter the adhesive portion (10) with the body portion. , The positions of the push portion (6) and the suction pipe (4) can be moved downward.

That is, the push portion (6) and the suction pipe (4) move downward as shown by the arrow (16), and the suction port (12) also reaches downward, so that the liquid content is further below. It is possible to suck in the liquid residue and suck it up.

In the example shown in FIG. 3, (D) is an example of the hand pump (3) used in the liquid packaging container (100) according to the present invention, and the hand-push portion (6) is provided by the screw structure (15). The position of the suction pipe (4) with respect to the adhesive portion has been moved downward by 5 to 20 mm.

In the example shown here, the position of the adhesive portion (10) with the body portion is unchanged in the vertical direction, and the screw structure (15) is inserted into the adhesive portion (10) with the body portion by 5 to 20 mm. , The push portion (6) and the suction pipe (4) are moved downward.

As a result of the downward movement by the screw structure (15), the hand-push portion (6) and the suction pipe (4) move 5 to 20 mm downward as shown by the arrow (17), and the suction port (12) also moves. In order to reach 5 to 20 mm below, it is possible to suck in and suck up the liquid residue below the liquid content.

By setting the downward movable range of the push portion (6) and the suction pipe (4) to 5 to 20 mm, the suction port (12) reaches the bottom (2) of the liquid packaging container (100). Later, the bottom (2) is further pushed down to facilitate the formation of a liquid pool of the contents, ensuring stable suction and suction.

In addition, as a result of diligent studies, if the movement is downward in this range, there is no risk of damaging the liquid packaging container (100), especially the bottom (2), which hinders stable suction and suction. It was found that there is no such thing and that the independence of the liquid packaging container (100) is not significantly impaired.
FIG. 4 is a schematic view for explaining the movement of the fixed position of the hand pump and the relationship between the packaging container and the bottom of the liquid packaging container according to the present invention.

In the figure shown in FIG. 4, (E) is an example of an initial state in which the hand pump (3) is attached to the liquid packaging container (100) according to the present invention and the contents are filled. In this example, the hand pump (3) is provided with a screw structure (15), and the hand push portion (6) is in a high position due to the screw structure (15).

Further, the suction port (12) reaches a position close to the central portion (11) of the bottom portion. Regarding the removal of the content liquid by pressing the hand-pushed portion (6), the usability is the same as that of the existing bottle type product.

Further, in the example of (E) shown in FIG. 4, at this stage, the liquid level (9) reaches near the central portion (11) of the bottom, which hinders the suction and suction of the content liquid. There is no fear, and the screw structure (15) eliminates the need to move the push portion and the suction pipe downward from the fixed position shown in the figure.

In the example shown in FIG. 4, (G) is an example in which the hand pump (3) is attached to the liquid packaging container (100) according to the present invention, and the hand pump portion (6) and the suction portion (6) are sucked up by the screw structure (15). This is an example in which the pipe (4) is moved 5 to 20 mm downward from the initial state.

As a result, the screw structure (15) is in a state of being inserted into the adhesive portion (10) with the body portion, and the hand-push portion (6) and the suction pipe (4) are pushed down. Further, the suction port (12) can reach the bottom portion (2) and further push down the central portion (11) of the bottom portion, thereby making it easy to form a liquid pool of the content liquid.

In the example shown in FIG. 4, in (G), the liquid level (9) is close to the central portion (11) of the bottom and is the surface of the liquid pool, but the suction port (12) is the liquid level (9). ), So it is possible to keep the contents liquid sucked in smoothly and sucked up. As a result, the liquid residue can be reduced.

That is, in the present invention, as a result of diligent studies, the variable height of the lowering of the hand-pushing portion (6) and the suction pipe (4) of the hand-pushing pump (3) due to the screw structure is in the range of 5 mm to 20 mm. We found that it was optimal.

That is, if the movement is downward in this range, there is no risk of damaging the liquid packaging container (100), particularly the bottom (2), and stable suction and suction are not hindered. Moreover, the independence is not significantly impaired.

In addition, while proposing the liquid packaging container (100) according to the present invention, we have also studied its usability. The items evaluated were the independence and operability of the liquid packaging container (100).

For example, if it is to be applied to liquid contents such as shampoo and conditioner, the independence of the container itself is important, and the usability as daily necessities such as one-handed operation and carrying is also important.

As a result of repeated studies, the liquid packaging container (100) according to the present invention has a body width of 80 to 300 mm and a body height of 120 to 400 mm in terms of usability such as independence and operability. It has been found that the optimum folding width of the bottom is 20 to 70 mm.

As described above, according to the present invention, it is possible to provide a packaging container with a hand pump, which is environmentally friendly and has a small amount of liquid residue.

Further, since the laminate based on the plastic film contains a gas barrier layer composed of a vapor-deposited layer of an inorganic compound and / or a coating layer of an inorganic compound, the contents can be well preserved and the outside air can be stored. It is possible to realize a packaging container for liquids that can prevent deterioration of the contents due to oxygen, water vapor, or the like.

This is convenient when the liquid packaging container (100) is required to have a structure in which the component of the gas barrier layer does not include a metal layer such as an aluminum vapor deposition layer or an aluminum foil layer.

Hereinafter, each element constituting the liquid packaging container according to the present invention will be described in more detail individually.

(Plastic molded product)
The plastic molded product is formed by molding a polymer resin composition using a mold, and the molding method can be, for example, an injection molding method or a blow molding method. In the liquid packaging container (100) according to the present invention, the hand pump (3) can be made of a plastic molded product.

Examples of resins that can be used as plastic molded products include polyolefins (polyethylene, polypropylene, etc.), polyesters (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamides (nylon-6, nylon-66, etc.), polyimides, and the like. It can be used and is appropriately selected according to the application. In particular, when polypropylene or polyethylene terephthalate is used as the molding resin, it is more preferable in terms of strength and price, and having heat-sealing suitability is advantageous for heat-sealing with a plastic film or a laminate of the body.

(Plastic film)
The plastic film alone or the plastic film constituting the laminate based on the plastic film is a film made of a polymer resin composition, for example, polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, etc.). Polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), polyimide, etc. can be used, and are appropriately selected according to the application. In particular, when polypropylene or polyethylene terephthalate is used as the base film, it is more preferable in terms of film strength and price.

(Adhesive layer)
When laminating each layer constituting the laminated body, it can be laminated via an adhesive layer. As the material of the adhesive, for example, polyester-isocyanate type resin, urethane resin, polyether resin and the like can be used.

Further, as a laminating method, a method such as dry lamination or non-solvent lamination can be used. Alternatively, when a thermoplastic resin is used, it can be laminated using an extruder. Alternatively, a layer such as a sealant layer can be directly formed by using an extruder.

(Gas barrier layer)
Further, for the purpose of improving the storage stability of the contents, if necessary, an opaque layer such as a colored film that shields ultraviolet rays can be provided in the laminate. Alternatively, a gas barrier layer can be provided in the laminate.

As the gas barrier layer, for example, a metal foil such as an aluminum foil or a film obtained by metal-depositing a plastic film can be used. However, when a metal foil such as an aluminum foil or a metal vapor deposition layer cannot be used, a gas barrier film in which a gas barrier layer of an inorganic compound is provided on a plastic film can be used. In this case, it is also more environmentally friendly in the scene of disposal and incineration.

In the case of a gas barrier film provided with a gas barrier layer of an inorganic compound, the gas barrier layer can be composed of a vapor-deposited layer and a coating layer of the inorganic compound. After providing an anchor coat on the base film, the vapor-deposited layer and the coating layer are sequentially provided. ..

For example, urethane acrylate can be used as the anchor coat layer of the gas barrier film provided with the gas barrier layer of the inorganic compound. For the formation of the anchor coat layer, a coating method in which a coating material in which a resin is dissolved in a solvent is applied by a printing method such as gravure coating can be used, or a coating film can be formed by using a generally known coating method.

As a method for forming an inorganic compound vapor deposition layer, an inorganic compound such as SiO or AlO is coated on a base film provided with an anchor coat layer by a vacuum vapor deposition method to form an inorganic compound layer by the vacuum vapor deposition method. can do. The thickness of the thin-film deposition layer is preferably 15 nm to 30 nm.

As a method for forming the coating layer, an aqueous solution or water / alcohol containing at least one of a water-soluble polymer, (a) one or more alkoxides or hydrolysates thereof, or both, or (b) tin chloride. A coating agent containing a mixed aqueous solution as a main component is applied onto the film and dried by heating to form an inorganic compound layer by a coating method, which can be used as a coating layer. At this time, by adding a silane monomer to the coating agent, it is possible to improve the adhesion with the anchor coat layer.

The inorganic compound layer has a gas barrier property only by the coating film by the vacuum vapor deposition method, but the coating layer which is the inorganic compound layer by the coating method is formed by superimposing the coating layer which is the inorganic compound layer by the vacuum vapor deposition method to form a barrier layer. be able to.

By combining these two layers, a reaction layer of both layers is formed at the interface between the inorganic compound layer by the vacuum vapor deposition method and the inorganic compound layer by the coating method, or the inorganic compound layer by the coating method becomes an inorganic compound layer by the vacuum vapor deposition method. By filling and reinforcing defects such as pinholes, cracks, and grain boundaries or micropores that occur, a dense structure is formed, which realizes high gas barrier properties, moisture resistance, and water resistance, and is flexible enough to withstand deformation. Since it has properties, there is no risk of impairing its suitability as a pouch, which is a flexible packaging container.

Further, when SiO is used as the gas barrier layer, the contents can be visually seen from the outside of the pouch because it is transparent. These may be used properly according to the application and the required quality. In addition, since it does not use metal, it can be used with metal inspection machines during the manufacturing process, and it is also suitable for heating with a microwave oven if necessary, and when the liquid packaging container is pushed from the outside. It also has advantages such as the resilience of the container shape.

(Sealant layer)
Of the thermoplastic resins, polyolefin resins are generally used as the material of the sealant layer. Specifically, low-density polypropylene resin (LDPE), medium-density polypropylene resin (MDPE), and linear low-density polyethylene resin. (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α-olefin copolymer, ethylene-methacrylic acid resin copolymer and other ethylene-based resins, polyethylene-polybutene blend resin, homopolypropylene resin Polypropylene resins such as (PP), propylene-ethylene random copolymer, propylene-ethylene block copolymer, and propylene-α-olefin copolymer can be used.

Further, the sealant layer may be a film formed in advance and laminated as a layer constituting the laminated body, or the molten resin may be directly laminated by using an extruder or the like.

(Print layer)
If necessary, the image of the product can be improved, and necessary information about the contents can be provided by printing on the layer that can be seen from the outside of the container. As the base film for that purpose, a plastic film made of a polymer material can be used.

The plastic film is a film made of a polymer resin composition, for example, polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), polyimide. Etc. can be used and are appropriately selected according to the application. In particular, when polypropylene or polyethylene terephthalate is used as the base film, it is more preferable in terms of film strength and price.

There are no particular restrictions on the printing method and printing ink. Therefore, it may be appropriately selected from known printing methods, and for example, a gravure printing method, an offset printing method, a gravure offset printing method, a flexo printing method, an inkjet printing method, a silk screen printing method, or the like can be used.

Above all, the gravure printing method can be preferably used in terms of productivity and high definition of the pattern. Considering the printability on the film, the design such as color tone, the adhesion, and the safety as a food container if necessary, the printing ink should be appropriately selected from the existing commercialized ones. Can be done.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the examples shown here. The present invention is limited by the claims.

FIG. 5 is a perspective view and a schematic cross-sectional view for explaining an example and a comparative example of the liquid packaging container according to the present invention.

In evaluating the liquid packaging container according to the present invention, the evaluation items were set to the following three items.
(1) Comparison of the remaining amount of liquid contents between the liquid packaging container according to the present invention and the conventional bottle-type liquid container.
(2) In the liquid packaging container according to the present invention, the length (L) of the screw portion and the liquid content that determine the downward movable length of the fixed position with respect to the hand-pushed portion (6) and the adhesive portion of the suction pipe. Comparison of the remaining amount of.
(3) Comparison of usability by evaluating the dimensions, independence, and operability of the liquid packaging container according to the present invention.

(Comparison of remaining amount of liquid contents with conventional bottle-type liquid container)
<Evaluation method>
300 g of shampoo is filled in the liquid packaging container according to the present invention and the conventional bottle-type liquid container (commercially available product), the contents are taken out by a hand pump, and the remaining amount of the liquid contents when the contents are completely removed from the pump. Was weighed. In the case of the liquid packaging container according to the present invention, the remaining amount after the contents are taken out by moving the fixed position of the hand-pushed portion and the suction pipe with respect to the adhesive portion downward by the screw structure.

<Example 1>
The liquid packaging container according to the present invention has the following dimensions. (See Fig. 5)
Body width (W): 120 mm
Body height (H): 200 mm
Bottom fold width (B): 30 mm (one way)
Screw portion length (L): 10 mm.

<Comparative example 1>
It is a conventional bottle-type liquid container (commercially available).

The evaluation results are shown in Table 1.

(Comparison of screw length (L) and remaining amount of liquid contents)
<Evaluation method>
The length (L) of the screw part of the liquid packaging container was changed, 300 g of shampoo was filled, the contents were taken out by a hand pump, and the remaining amount of the liquid contents was measured when the contents did not come out from the pump at all. ..

<Example 2>
The liquid packaging container according to the present invention has the following dimensions. (See Fig. 5)
Body width (W): 120 mm
Body height (H): 200 mm
Bottom fold width (B): 30 mm (one way)
Screw portion length (L): 5 mm.
That is, only the length (L) of the screw portion is different from that of the first embodiment.

<Example 3>
The liquid packaging container according to the present invention has the following dimensions. (See Fig. 5)
Body width (W): 120 mm
Body height (H): 200 mm
Bottom fold width (B): 30 mm (one way)
Screw portion length (L): 10 mm.
That is, the dimensions are the same as those of the first embodiment.

<Example 4>
The liquid packaging container according to the present invention has the following dimensions. (See Fig. 5)
Body width (W): 120 mm
Body height (H): 200 mm
Bottom fold width (B): 30 mm (one way)
Screw portion length (L): 20 mm.
That is, only the length (L) of the screw portion is different from that of the first embodiment.

<Comparative example 2>
It is a liquid packaging container with a hand pump, and its dimensions are as follows. (See FIG. 5) Body width (W): 120 mm
Body height (H): 200 mm
Bottom fold width (B): 30 mm (one way)
Screw portion length (L): 2 mm.
That is, only the length (L) of the screw portion is different from that of the first embodiment.

<Comparative example 3>
It is a liquid packaging container with a hand pump, and its dimensions are as follows. (See FIG. 5) Body width (W): 120 mm
Body height (H): 200 mm
Bottom fold width (B): 30 mm (one way)
Screw portion length (L): 4 mm.
That is, only the length (L) of the screw portion is different from that of the first embodiment.

<Comparative example 4>
It is a liquid packaging container with a hand pump, and its dimensions are as follows. (See FIG. 5) Body width (W): 120 mm
Body height (H): 200 mm
Bottom fold width (B): 30 mm (one way)
Screw portion length (L): 25 mm.
That is, only the length (L) of the screw portion is different from that of the first embodiment.

The evaluation results are shown in Table 2.

(Comparison of dimensions, independence, and usability by evaluation of operability)
<Evaluation method>
A liquid packaging container with varying dimensions was produced, filled with 300 g of shampoo, and the contents were taken out with a hand pump to evaluate its usability. Usability was evaluated for independence and operability.

<Example 5>
The liquid packaging container according to the present invention has the following dimensions. (See Fig. 5)
Body width (W): 100 mm
Body height (H): 150 mm
Bottom fold width (B): 25 mm (one way)
Screw portion length (L): 10 mm.
That is, the dimensions of the body and the bottom are different from those of the first embodiment.

<Example 6>
The liquid packaging container according to the present invention has the following dimensions. (See Fig. 5)
Body width (W): 200 mm
Body height (H): 280 mm
Bottom fold width (B): 35 mm (one way)
Screw portion length (L): 10 mm.
That is, the dimensions of the body and the bottom are different from those of the first embodiment.

<Comparative example 5>
It is a liquid packaging container with a hand pump, and its dimensions are as follows. (See FIG. 5) Body width (W): 70 mm
Body height (H): 100 mm
Bottom fold width (B): 15 mm (one way)
Screw portion length (L): 10 mm.
That is, the dimensions of the body and the bottom are different from those of the first embodiment.

<Comparative Example 6>
It is a liquid packaging container with a hand pump, and its dimensions are as follows. (See Fig. 5) Body width (W): 350 mm
Body height (H): 500 mm
Bottom fold width (B): 85 mm (one way)
Screw portion length (L): 10 mm.
That is, the dimensions of the body and the bottom are different from those of the first embodiment.

The evaluation results are shown in Table 3.

From the results shown in Tables 1 to 3, the liquid packaging container according to the present invention is
(1) Comparison of the remaining amount of liquid contents between the liquid packaging container according to the present invention and the conventional bottle-type liquid container.
(2) In the liquid packaging container according to the present invention, the length (L) of the screw portion and the liquid content that determine the downward movable length of the fixed position with respect to the hand-pushed portion (6) and the adhesive portion of the suction pipe. Comparison of the remaining amount of.
(3) Comparison of usability by evaluating the dimensions, independence, and operability of the liquid packaging container according to the present invention.
In any of the evaluation items, it is superior to the comparative example, and in the packaging container with a hand pump, which is the subject of the present invention, it is possible to provide a packaging container for liquids which is environmentally friendly and has a small amount of liquid residue. It became clear that.

For each of the evaluation items (1) to (3), the evaluation results of Examples and Comparative Examples will be considered individually.

A comparison of the remaining amount of liquid contents between the liquid packaging container according to the present invention and the conventional bottle-type liquid container will be considered. (Table 1)
Comparative Example 1 is a conventional type, that is, a commercially available bottle type container, and the remaining amount of the content liquid is 43.7 g, which is 14.6% with respect to the filling amount of 300 g of the content. On the other hand, in the liquid packaging container according to the present invention, the remaining amount of the content liquid was 9.5 g, which was 3.1% with respect to the content filling amount of 300 g. Therefore, according to the present invention, the effect of reducing the remaining amount of the content liquid is clearly seen.

Comparison of the length (L) of the screw portion and the remaining amount of the liquid content, which determines the downward movable length of the hand-pushed portion (6) and the fixed position of the suction pipe in the liquid packaging container according to the present invention. Consider. (Table 2)
In Examples 2, 3, and 4, the length (L) of the screw portion is within the range of 5 to 20 mm, and the fixing position with respect to the adhesive portion, which is a requirement of the present invention, is lowered by 5 to 20 mm. In order to realize that it is movable, the remaining amount of the liquid content is in the range of 9 g to 15 g, as compared with Comparative Example 2 (34 g) and Comparative Example 3 (28 g). , A small amount. Therefore, according to the present invention, the effect of reducing the remaining amount of the content liquid is clearly seen.

Further, in Comparative Example 4, when the length (L) of the screw portion is 25 mm and the fixing position with respect to the adhesive portion is to be moved downward by 20 mm, the screw portion comes into contact with the bottom of the liquid packaging container. The result was that the screw did not tighten.

If you try to tighten the screw forcibly. The tip of the suction pipe further pushes down the central part of the bottom, which may hinder the independence or destroy the bottom of the container, which is inconvenient.

In the liquid packaging container according to the present invention, a comparison of dimensions, independence, and usability by evaluation of operability will be considered. (Table 3)
As mentioned above, as a result of our examination, the width of the body of the liquid packaging container is 80 to 300 mm, the height of the body is 120 to 400 mm, and the folding width of the bottom is in the range of 20 to 70 mm. Examples 5 and 6, which were found to have less liquid residue, not impairing independence, and excellent operability, were evaluated to be excellent in independence and operability because they were within this range. I was able to get it.

On the other hand, in Comparative Example 5, the width of the body portion and the folding width of the bottom portion are smaller than the above range, so that the width of the body portion and the folding width of the bottom portion are smaller than the above ranges, so that it is difficult to open the portion and the stability of independence cannot be ensured. Further, in Comparative Example 6, the width of the body of the liquid packaging container, the height of the body, and the folding width of the bottom all exceeded the above ranges, and the container itself was too large to be used.

As described above, according to the present invention, it was possible to verify that it is possible to provide a packaging container with a hand pump, which is environmentally friendly and has a small amount of liquid residue. ..

1 ... Body 2 ... Bottom 3 ... Hand pump 4 ... Suction pipe 5 ... Nozzle 6 ... Hand push 7 ... Heat seal with body 8 ... Bottom heat Seal 9 ... Liquid level 9'... Liquid level 10 ... Adhesion to the body 11 ... Central part of the bottom 12 ... Suction port 13 ... Shoulder heat seal 14 ... Shoulder 15 ... Screw structure 16 ... Arrow 17 ... Arrow 100 ... Liquid packaging container W ... Body width H ... Body height B ... Bottom fold Width L: Length of screw part

Claims (4)

A self-supporting liquid packaging container
The liquid packaging container is composed of a body, a bottom, and a hand pump.
The body portion forms the outer circumference of the packaging container in a tubular shape, and forms the outer circumference of the packaging container.
Further, the body portion and the bottom portion are composed of a heat-sealable plastic film alone or a laminated body using the plastic film as a base material and provided with a heat-sealable layer on at least one surface.
The bottom is extensiblely folded and heat-sealed and connected to the bottom of the fuselage.
The upper part of the body is bonded to the inside of the body to form a shoulder.
The hand pump has a hand push portion and a nozzle protruding from the central portion of the shoulder portion to the upper part of the packaging container, and also has an adhesive portion with a tubular upper end portion of the body portion, and also has a bottom portion inside the packaging container. A plastic molded product that has a suction pipe that reaches the central part and has a suction port at the tip , and is connected to them.
The suction port reaches a position close to the central part of the bottom, and is
該手press portion and said siphoning pipe, Ri movable der to 5~20mm downwardly relative to the adhesive portion, pushed further down the central portion of the tip of the siphoning pipe bottom when moving to the maximum downward characterized Rukoto such a form that the formation of the liquid pool, the liquid packaging containers. The liquid packaging container according to claim 1, wherein the movement is due to a screw structure provided in the hand pump. The liquid packaging container is characterized in that the width of the body is 80 to 300 mm, the height of the body is 120 to 400 mm, and the folding width of the bottom is 20 to 70 mm. The liquid packaging container according to either 1 or 2. Claims 1 to claim that the laminate using the plastic film as a base material contains a gas barrier layer composed of a vapor-deposited layer of an inorganic compound, a coating layer of an inorganic compound, or both. The liquid packaging container according to any one of Item 3.

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