JP2014028663A - Liquid container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid container which keeps discharging efficiency of contents improved even if a high-viscosity content is sucked and discharged, and costs of transportation and storage lowered, and facilitates disposal.SOLUTION: A liquid container has a substantially rectangular parallelepiped box shape in a state of being filled with a content, and has a spout which is fusion-bonded to a side face thereof to discharge the content. The liquid container includes: a film A extending over four side faces 1, 2, 3, 4 and having the fusion-bonded spout 5; and films B of two faces forming horizontal faces 6, 7 above and below the four side faces. The films B of the two faces are bent so that each of the faces to be fusion-bonded may face outside, and are fusion-bonded to the film A of the four side faces by a periphery in a state of being inserted to an inner side of the film A of the four side faces.

Description

  The present invention relates to a liquid container for containing a high-viscosity liquid such as ink, mayonnaise, ketchup, sauce, etc., and applying it to a self-priming machine.

  Conventionally, as a liquid container for storing a highly viscous liquid and applying it to a self-priming machine, there is, for example, a bag-in-box (Patent Document 1). This liquid container accommodates a film body in which a thick spout is fused on one side to allow the contents to be discharged or to be filled and discharged in a substantially rectangular or cylindrical outer box made of cardboard or cardboard. Was. In addition, there exist a thing which makes the spout protrude from the outer box beforehand, and a thing which opens the spout part of the outer box and pulls out the spout during use. This liquid container has been mainly used as a business container for storing liquids such as sauce, soy sauce, sake, and developer.

  By the way, if the contents are high viscosity contents such as sauce for pork cutlet, ink for screen printing or silkscreen printing, mayonnaise, etc., the contents cannot be discharged from the spout of the container simply by gravity. Was sucked and discharged from the spout.

  However, in the above-described conventional liquid container such as a bag-in-box, as shown in FIG. 6, when the contents are sucked and discharged from the spout, the contents near the spout are first discharged, but the viscosity of the contents Therefore, the volume of the discharged contents is filled by the film body of the container being deformed, and the suction force may not reach the contents away from the spout. Therefore, as shown in FIG. 6, the film body 36 accommodated in the outer box 35 of the container is deformed in the order of a, b, c, d, and a part of the film body near the spout 5 is sucked. There was a problem that the mouth of the spout was blocked, and the content discharge efficiency varied greatly. For this reason, although the method of sticking on the inner surface of the outer box about the half of the outer surface of a film body and making a film body fold completely at the time of discharge | emission was devised, sufficient effect was not acquired.

JP-A-8-207939

  Therefore, even when the container is filled with high-viscosity contents, the contents are reliably discharged without blocking the mouth of the spout when the contents are sucked and discharged, and the contents remain. We developed a liquid container with a very small volume.

  In recent years, it has become necessary to consider not only production but also disposal of products to be mass-produced. In particular, plastic containers have been widely used because they are excellent in the protection and convenience of their contents, but there is a problem that empty containers after the contents are discharged are difficult to dispose of. It is (1) large in capacity, bulky, and high in transportation and storage costs. (2) Even if it is buried and discarded, it remains indefinitely in the same shape and size without being decomposed into microorganisms. (3) Incineration tends to damage the furnace because of the large amount of calories burned. There were social problems such as. The liquid container was developed in consideration of the solution of these problems.

  The present invention provides a liquid container that is excellent in the efficiency of discharging the contents even if the high-viscosity contents are sucked and discharged, has low transportation and storage costs, and is easy to dispose of.

  That is, the first invention of the present invention is a liquid container having a substantially rectangular parallelepiped box shape filled with the contents, and having a spout fused to one side surface to allow the contents to be discharged. The liquid container is composed of a four-sided film A in which spouts are fused and connected, and a two-sided film B that forms a horizontal plane above and below the four-sided, and the two-sided film B The liquid is characterized in that each of the surfaces to be fused is bent so as to be on the outer side, and is inserted into the inner surface of the film A on the four side surfaces and the periphery of the film A on the four side surfaces is fused. It is a container.

  Next, according to a second aspect of the present invention, the four side surfaces formed of the film A are higher in rigidity than the other two surfaces formed of the film B. The liquid container described.

  Next, according to a third aspect of the present invention, when the contents are discharged and folded, the reinforcing material is overlapped on the portion of the film B that is folded in the vicinity of the spout and contacts the spout from the inside. The liquid container according to the first invention or the second invention, characterized in that the rigidity is increased.

  And the 4th invention of this invention is 45 degree | times from the boundary part of the melt | fusion part of the films A of right and left side surfaces, and the melt | fusion part of the film A and the film B to an upper melt | fusion part and a lower melt | fusion part. The liquid container according to any one of the first to third inventions, wherein a fusion part continuous at an angle of is provided.

  The liquid container of the present invention is used for high-viscosity contents, and can be used for an automatic filling machine or automatic suction machine for contents. When the contents are sucked and discharged, a film in which a spout forms a container It is not blocked by the body, the contents are well discharged, and the remaining amount of discharge is small.

  In addition, the empty container of the liquid container of the present invention can be flattened and saves space for storage and transportation because it does not take up space for storage and transportation of the container before filling the contents and after discharging the contents. It is.

It is explanatory drawing which shows an external appearance when the content of the liquid container of one Embodiment of this invention is filled. It is explanatory drawing which shows the melt | fusion part of the liquid container of one Embodiment of this invention, (a) is the surface when fuse | melting, (b) is the back surface. It is explanatory drawing which shows the lamination | stacking state of the film at the time of melt | fusion in preparation of the liquid container of this invention. It is explanatory drawing which shows the melt | fusion part of the liquid container of other one Embodiment of this invention, (a) is the surface when fuse | melting, (b) is the back surface. It is a top view which shows the change of the shape accompanying discharge | emission of the contents of the liquid container of this invention, (a) is a container before discharging | emitting a content, (b) is a container after discharging | emitting a content. is there. It is explanatory drawing which shows the change of the shape accompanying the discharge of the contents of the film body accommodated in the outer case in the conventional bag-in-box.

Next, the liquid container according to the embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, a liquid container according to an embodiment of the present invention is a film A that is a laminated film of four side surfaces 1, 2, 3, 4 such as a polyamide / ethylene / vinyl alcohol copolymer / polyethylene structure. A separate spout 5 for injecting or discharging the contents is made by opening a hole at a predetermined position and fused.

  Film A is produced by a laminating method such as dry lamination, wet lamination, and extrusion lamination. In addition to the above-described structure, the film A is a polyamide / modified polyethylene / polyethylene structure, an ethylene / vinyl acetate copolymer saponification. Product / modified polyethylene / polyethylene composition, polyamide / ethylene / vinyl acetate copolymer saponified product / modified polyethylene / polyethylene composition, biaxially oriented polyethylene terephthalate / polyamide / modified polyethylene / polyethylene composition, biaxially oriented polyethylene terephthalate / ethylene / vinyl acetate Copolymer saponified product / modified polyethylene / polyethylene composition, biaxially stretched polyethylene terephthalate / polyamide / ethylene / vinyl acetate copolymer saponified product / modified polyethylene composition, biaxial elongation Laminated films such as polypropylene / polyamide / modified polyethylene / polyethylene structure can be used. The modified polyethylene is maleic anhydride-modified polyethylene.

  The separate spout is usually made of an injection-molded product made of polyethylene or the like, but a sandwich-molded multilayer injection-molded product may be used particularly when barrier properties are required. The spout is provided with a heel at a predetermined position on the neck to support the container when filling or aspirating the contents. The shape of this heel can be any required shape such as a circle, hexagon, pentagon, or rectangle. Can take shape.

  The two surfaces forming the horizontal planes 6 and 7 shown in FIG. 1 above and below the four side surfaces described above are laminated layers such as a biaxially oriented polyethylene terephthalate / polyamide / ethylene / vinyl acetate copolymer saponified modified polyethylene / polyethylene structure, for example. The film B is made of a material that has barrier properties against oils and fats, moisture, and the like, and the outer surface of the container is made of a material that is difficult to fuse.

  In addition to the above-described configuration, the film B has a biaxially stretched polyethylene terephthalate / polyamide / modified polyethylene / polyethylene configuration, a biaxially stretched polyethylene terephthalate / ethylene-vinyl acetate copolymer saponified product, a modified polyethylene / polyethylene configuration, and a biaxial stretch. A laminated film of polyethylene terephthalate / polyamide / ethylene / vinyl acetate copolymer saponified product / modified polyethylene configuration, biaxially oriented polypropylene / polyamide / modified polyethylene / polyethylene configuration, or the like can be used. The film B should have a lower rigidity than the film A. The reason for this is to make it easy to fold by making it softer and entering the inside before the film A when the contents are poured out. In order to lower the rigidity, the barrier layer having rigidity, that is, the saponified ethylene / vinyl acetate copolymer or polyamide layer is thinned, and the biaxially stretched polyethylene terephthalate layer is thinned. Further, the rigidity may be lowered by reducing the total thickness of the film.

  The film B that forms the upper and lower surfaces is inserted into the inner surface of the film A that forms the four side surfaces while being folded so that the surfaces to be fused are on the outer side. Is usually heat-sealed at about 220 ° C. by a heat seal method. In this fusion, as shown in FIGS. 2A and 2B, the fusion parts 8 and 9 are fused to each other, but the other fusion parts 10, 11, 12, 13, In 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, and 25, film A and film B are fused. As shown in FIG. 3, these portions are heat-sealed in a state of being overlapped with film A / film B / film A / film B, but the outer surfaces of the film B are not fused with each other. Film B and film A / film B are fused. It is preferable from the viewpoint of work that the spout is placed in a predetermined position on the film A by heat-sealing in advance. Heretofore, a method of manufacturing a rectangular parallelepiped container as it is by laminating plastic films and heat-sealing them is not conventionally known.

  Also, as shown in FIGS. 4A and 4B, the fused portions 8 and 9 between the films A and the fused portions 14, 15, 16, 17, 18, 19, between the films A and B, By providing further fused portions 26, 27, 28, 29, 30, 31, 32, 33 at an angle of 45 degrees from the boundary with 20, 21, 22, 23, 24, 25, the shape is further improved. When it is cut and inflated, it tends to be in the shape of a rectangular parallelepiped, and it is difficult to enter the portion where the contents are difficult to be discharged.

  To suck and discharge the contents from the liquid container of the present invention filled with the contents, put the positioning plate of the contents suction machine on the neck on the container side of the bag provided at the spout and insert the suction nozzle. , The rubber O-ring provided on the side of the suction nozzle presses the spout against the inner wall to ensure confidentiality, or the nozzle is pressed against the perforated wall to prevent the outside air from being sucked Aspirate and discharge.

  And when the contents of the container are discharged by the suction nozzle, the side surface 1 where the spout is fused to the mouth by the positioning plate of the contents suction machine and the surrounding wall does not move. As shown in FIGS. 5 (a) and 5 (b), the upper and lower two horizontal planes 6 and 7 (7 is not shown because it is a lower surface) of the thin and low rigidity film B are sucked to the spout 5 side, Accordingly, the side surface 1 and the side surface 3 at the target position gradually move toward the side surface 1. The spout is usually made of polyethylene having a wall thickness of 0.6 to 2.0 mm, preferably 0.8 to 3.0 mm, and is fixed at a predetermined position on the side surface 1. When the container is folded, When a film having a fusion layer on one side is fused and placed on the inner surface of the film B at the portion in contact with the spout, the spout has rigidity even if it comes into contact with the film B. By making the shape of the surface uneven with ribs or the like, the contents can be reliably sucked and discharged to the end without completely closing the spout. Further, a rigid film or paper having an adhesive layer may be attached to the outside of the container.

  The liquid container of the present invention is a container mainly used for high-viscosity liquids such as ink, chocolate, mayonnaise, ketchup, liquid detergent, clothing softener, paint, adhesive, honey, etc. It is intended for those that mechanically aspirate and discharge the contents.

  Moreover, the liquid container of this invention can make parts other than a spout flat, and can make a volume small. Before the contents are filled, the container can be stored and transported in a flat shape, so that the storage cost and the transport cost are low. Therefore, it is not necessary to install a dedicated container manufacturing factory in the filling factory, and the initial cost can be reduced.

  Further, the liquid container of the present invention is partially rigid when the reinforcing material 34 shown in FIG. 1 is placed on the portion of the film B where the spout hits when the contents are sucked out and folded. As a result, the film B does not block the spout and the discharge of the contents is stabilized. The reinforcing material to be superimposed on the film B may be a film, cardboard, etc., and the reinforcing material may be attached to the inside or outside of the film B by means such as fusion or adhesion.

  The fused portions 26, 27, 28, 29, 30, 31, 32, and 33 shown in FIG. 4 are fused at an angle of 45 degrees with respect to the other fused portions. Unlike the other fused parts, this fused part is not a part that must be fused at first glance. However, if this fused part is not present, the contents enter the outside of the fused part. The shape may be distorted and the discharge of the contents may be impaired. When there is a fusion part inclined 45 degrees, the container rises smoothly into a rectangular parallelepiped box shape when the contents are filled, and the film B is easily folded before the film A when the contents are discharged. Of course, it is possible to cut the portion that is not filled with the contents by the fusion part inclined 45 degrees.

  Further, the fused portions 14, 15, 16, and 17 are formed on the spout side and on the opposite surface side by cutting out a part of the film B in this portion to make a hole or reducing the width. When the films A are fused, the shape of the container is easily maintained.

  First, a laminated film having a thickness of 200 μm with a polyamide / ethylene / vinyl alcohol copolymer / polyethylene structure was prepared as a film A by dry lamination, and a biaxially stretched polyethylene terephthalate / polyamide / ethylene / vinyl acetate copolymer was formed as a film B. Laminated films having a thickness of 200 μm were prepared by dry lamination with a saponified modified polyethylene / polyethylene structure, and these laminated films were each cut into a predetermined square shape. Next, using these films A and B, the film B is folded so that the surfaces to be fused are on the outside, and the spout is provided at a predetermined position so that the upper and lower portions between the two stacked films A are above and below. In this state, as shown in FIGS. 2 (a) and 2 (b), the surrounding fused portions 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 , 20, 21, 22, 23, 24, and 25 were heat-sealed by a heat seal sealing method at a temperature of 220 ° C. to produce a liquid container having a capacity of 600 ml of Example 1. The external dimensions of the container excluding the spout were 80 mm long, 100 mm wide, and 80 mm high.

  As shown in FIGS. 4A and 4B, the thickness of the film B is 130 μm, and the fused portions are fused portions 26, 27, 28, 29, 30, 31, 32, 33 of 45 degrees as shown in FIGS. The liquid container of Example 2 was produced in the same manner as in Example 1 except that was further provided.

As shown in FIG. 1, a film B having a predetermined shape is fused as a reinforcing material 34 to the inner surface of the film B opposite to the spout of the liquid container of Example 2 to produce the liquid container of Example 3. did.
<Evaluation>

  The liquid containers of Example 1, Example 2 and Example 3 were filled with high-viscosity silk screen ink, and the contents were sucked and discharged by an automatic suction machine. The remaining contents in the three measurements at that time are 100 ml (16%), 50 ml (8%), and 70 ml (12%) in the container of Example 1, and 50 ml ( 8 ml), 7 ml (1.2%), 60 ml (10%), and in the container of Example 3, 10 ml (1.7%), 12 ml (2%), 8 ml (1.3%) Met.

  The above-described liquid container of the third embodiment of the present invention has a low content remaining rate as compared with the conventional liquid container, and the discharge state of the liquid container of the third embodiment is particularly stable with good reproducibility.

  INDUSTRIAL APPLICABILITY The present invention can be used for a liquid container for containing a high viscosity liquid such as ink, mayonnaise, ketchup, sauce, etc. and applying it to a self-priming machine.

1, 2, 3, 4 ... side surface 5 ... spout 6, 7 ... horizontal plane 8, 9 ... fused portion 10, 11, 12, 13, 14, 15, 16, 17, 18.19 ... fused portion 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 ... fused parts 30, 31, 32, 33 ... fused parts 34 ... reinforcing material 35 ... outer box
36 ... Film body

Claims (1)

  In a liquid container that is used in a content suction machine, the spout is fused to one side so that the contents can be discharged, and the liquid container is connected to the film A on the side where the spout is fused And a film B that forms a horizontal plane above or below the side surface, and the film B is bent so that the surface to be fused is on the outside, and is inserted into the inner surface of the film A on the side surface. A liquid container, wherein the side film A and the periphery are fused.

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