JP5168520B2 - Fluid packaging container - Google Patents

Description

  The present invention relates to a fluid packaging container for storing fluids such as liquid detergents such as shampoos and beverages.

The fluid container is a liquid detergent such as shampoo that contains the fluid in a two-ply or self-supporting bag body that seals the peripheral edge by thermocompression bonding, etc. It is often used as a packaging container for refilling various beverages.
This type of fluid packaging container is designed to incline the tip of the tapered dispensing guide path along the cutoff line and pour out the contents with the dispensing port facing downward, so that the contents can be smoothly removed from the dispensing guide path. Therefore, it is required to flow out stably.
However, this type of fluid container consists of a bag made of a soft material such as a synthetic resin film. Normally, the contents stay in the lower part of the bag and the front and back films on the upper part of the bag, including the pouring guide path, come into contact. Therefore, when the bag body is reversed, the fluid is difficult to flow down, and there is a problem that the flow path is likely to be blocked due to irregular creases and creases that occur in the vicinity of the dispensing guide path. There was also the inconvenience that the direction of pouring could not be determined if pressure was applied.

Various attempts have been made to solve this problem. For example, an arrangement in which an opening assisting mechanism or a bend prevention mechanism having a convex embossing is provided on the outside or inside of the pouring guide path (Japanese Patent Laid-Open No. Hei 7-2009). No. 2260, Japanese Patent Laid-Open No. 11-11498), and an auxiliary layer provided on the base material of the pouring guide path (Japanese Patent Laid-Open No. 2004-338753) are known.
Since these materials require additional members and processes for forming the pouring guide path, there is a problem in that costs are increased and resources are wasted.

Further, Japanese Patent Application Laid-Open No. 2003-267404 discloses a structure in which an auxiliary layer portion attached to the extraction guide path is formed in a convex portion that is expanded outward in advance.
This also requires an additional process for forming the bag in order to form the convex surface in advance on the synthetic resin bag sheet, which increases the cost, and such a bulging portion is localized when viewed from the inside of the bag body. Since this is a concave portion, there is also a disadvantage that fluid easily remains in the concave portion.

JP 7-2260 A Japanese Patent Laid-Open No. 11-11498 Japanese Patent Laid-Open No. 2004-338753 JP 2003-267404 A

  Accordingly, an object of the present invention is to generate a resilient dimple that can be restored to a predetermined position on the base of the bag extraction guide path by a specific edge shape of the bag and its own weight when the fluid contents flow down, and this elastic dimple. Accordingly, an object of the present invention is to provide a fluid packaging container in which an extended portion of a flow path is formed so as to be able to be repetitively restored in a dispensing guide path.

In order to achieve the above object, the fluid packaging container of the present invention comprises a single layer of nylon, polyethylene, polyethylene terephthalate or other synthetic resin film, or a laminate sheet of two or more of these, or an aluminum foil layer between these laminate sheets, A fluid container is provided between the front and back synthetic resin flexible sheets, which are laminated with synthetic resin flexible sheets having a thickness of 100 to 250 microns, which are made of a laminated sheet with an aluminum vapor deposition film layer or a silica vapor deposition film layer interposed therebetween. A substantially rectangular bag body that seals the peripheral edge is formed, and one side sealing edge of the bag body is formed as a gently concave arc-curved edge extending from the bottom of the internal fluid storage part to the square corner, and thus formed wherein the one side sealed edges that, to form the tapered dispensing guideway consisting of an upper sealing edge, which is gently inclined toward the square corner, Guideway near the base dispense the serial upper sealing edge, when the step is formed curved portion narrowed down to the bag interior, and the dispensing guide path of the bag body downwards, and the edge shape of the bag body, the bag body Due to the flexibility of the sheet base material and the weight of the fluid flowing downward, an elastic dimple that can be restored from the step curved portion of the upper sealing edge of the bag body toward the inside of the bag sheet base material is formed. It is characterized in that the pouring guide path is expanded so as to be restored to both the front and back sides by elastic deformation.

  In order to form an elastic dimple that can be restored from the step curved portion of the bag body toward the inside of the bag sheet base material, and to elastically deform the extraction guide path to both the front and back sides by the elastic dimple. Further, the front and back base materials of the bag used in the fluid packaging container of the present invention are a single layer sheet of nylon, polyethylene, polyethylene terephthalate or other synthetic resin film, or a laminate sheet of two or more of these, or a laminate of these A synthetic resin flexible sheet having a thickness of 100 to 250 microns comprising a laminated sheet in which an aluminum foil layer, an aluminum vapor deposited film layer, or a silica vapor deposited film layer is interposed between the sheets is preferable.

  In the present invention, since the expansion channel can be restored in the extraction guide path by the interaction between the shape and material of the bag body and the weight of the fluid, there is no need for a special reinforcing layer or processing on the sheet material. High processing costs can be suppressed. Further, since the bulging elastic dimples of the expansion channel and the bulging ridge line due to the dimples are formed in a predetermined shape at a predetermined position of the pouring guide path, stable pouring is always guaranteed.

  In addition, the dimples and the bulging ridgeline are elastically restored, so there is no risk of fatigue damage even after repeated pouring, and even if the bag body from which the spout is cut out collapses, Since the opening area is narrow, the risk of the internal fluid flowing out rapidly is suppressed.

The top view of the bag body of the fluid packaging container by one Example of this invention Side view of a self-standing state of the fluid packaging container of FIG. 1 embodiment filled with fluid contents Deformation explanatory drawing when the dispensing guide path of the fluid packaging container according to the present invention is directed downward AA line sectional view of FIG. Another modified explanatory view when the dispensing guide path of the fluid packaging container according to the present invention is directed downward AA line sectional view of FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows a fluid packaging container for refilling according to an embodiment of the present invention, and shows a flat bag body before storing fluid contents.
The bag body 1 is formed by stacking front and back flexible synthetic resin sheets 1a and 1b having a predetermined thickness, and sealing a peripheral edge (around the edge) other than the fluid introduction part 2 'by thermocompression bonding or the like. A structure in which a fluid storage portion 3 is provided inside, and after a predetermined amount of fluid is filled in the fluid storage portion 3 in the interior, the fluid introduction portion 2 ′ is sealed to form the entire periphery on the sealed edge 2. It is.

  Incidentally, as shown in FIG. 2, the bag body 1 of this embodiment has an inner bottom surface 4 having a predetermined area in the lower part, and the contents 5 are retained in the lower part when the bag body 1 is erected. The body is illustrated. However, the present invention is not limited to this, and can be applied to a non-self-supporting bag container.

A pouring guide path 7 directed from the fluid storage portion 3 to the square corner portion 6 is provided inside the bag body 1.
This extraction guide path 7 constitutes a tapered fluid extraction path that is gently inclined toward the rectangular corner 6 along one side sealing edge 2a and the upper sealing edge 2b of the bag body 1 . Specifically, as shown in FIGS. 1, 2, and 3, the one side sealing edge 2 a and the upper sealing edge 2 b are gently inclined toward the square corner at the tip of the extraction guide path 7. A cutting guide 8 is formed in the vicinity of the distal end of the extraction guide path 7 so as to be opened by cutting.

  Further, the bag body 1 is formed with a stepped curved portion 9 squeezed to the inside of the bag body 1 in the vicinity of the base portion of the upper sealing edge 2b constituting the pouring guide path 7, and further, the bag body. As shown in FIGS. 3 and 5, the front and back side synthetic resin sheets 1 a and 1 b, which are base materials of 1, flow downward when the pouring guide path 7 of the bag body 1 is directed downward. Thus, a flexible dimple 10 having a predetermined length is formed from the sealed edge of the stepped curved portion 9 of the bag body 1 toward the inner side of the bag body. The elastic deformation at the time of formation of the dimple 10 causes the front and back synthetic resin sheets 1a and 1b of the extraction guide path 7 to bulge outward, so that the extraction guide path 7 is expanded so that it can be restored. It is configured.

  That is, in the bag body 1 of the fluid container of the present invention, the fluid content 5 flows toward the extraction guide path 7 of the bag body 1 when the extraction guide path 7 is directed downward as shown in FIGS. 3 and 5. In the process, the dimple 10 is elastically formed from the step curved portion 9 of the base of the pouring guide path 7 toward the inside of the bag body due to the weight of the fluid contents and the flexibility of the bag sheet, and the tip protrusion of the dimple 10 From this, a rounded bulging ridge line 11 is formed, and as shown in FIGS. 4 and 6, the extraction guide path 7 is expanded.

  In this way, the bulging ridge line 11 is formed by the elastic dimple 10 and is supported by the overhanging inclined surface 12 of the dimple 10, so that it is generated at the same position every time the fluid flows down. When the body 1 is returned to its original position, it is restored to the lower flat sheet surface by the elasticity of the flexible synthetic resin sheets 1a and 1b.

  As described above, the expansion function of the extraction guide path 7 according to the present invention is such that the shape of the bag body 1, that is, the step curved portion 9 formed on the upper sealing edge 2b and the extraction guide path 7 of the bag body 1 are directed downward. When the flexible sheet 1a, 1b is elastically deformed by its own weight, that is, it is brought about by the formation of the dimple 10, the table constituting the bag body 1 together with the shape of the bag body 1 The material and physical properties of the back flexible sheets 1a and 1b are important.

A resilient dimple 10 is formed inside the step curved portion 9 formed in the vicinity of the base portion of the pouring guide path 7, thereby forming a bulging ridge line 11 in the pouring guide path 7 and expanding the flow path. As a result of various studies, the inventor of the present invention has made various studies on the flexible synthetic resin sheets 1a and 1b to be made. Thickness of 100 to 250 microns, preferably 130 to 150 microns composed of a layered sheet or a composite film in which an aluminum foil layer, an aluminum vapor deposited film layer, or a silica vapor deposited film layer is interposed between these synthetic resin multilayer sheets. It has been found that a flexible synthetic resin sheet is suitable.
If the thickness of the flexible synthetic resin sheets 1a and 1b to be used is less than 100 microns, the wrinkles and creases that are not restored are easily formed, and the formation of the stepped curved portion is disadvantageously performed. In addition, when the thickness exceeds 250 microns, not only is the material wasted, but it is difficult to obtain a flexible sheet exhibiting moderate elasticity that exhibits the above-described effects due to its rigidity being too strong.

  The fluid packaging container of the present invention can be widely used as a disposable packaging container for refilling in the field of packaging liquid detergents, beverages and other fluids or semi-fluids.

DESCRIPTION OF SYMBOLS 1 ... Bag body 1a, 1b ... Flexible synthetic resin sheet 2 ... Sealing edge 2 '... Fluid introduction part 2a ... Side part sealing edge 2b ... Upper sealing edge 3 ... Fluid accommodating part 4 ... Inner bottom face 5 ... Fluid content 6 ... Square corner 7 ... Pouring guideway 8 ... Cut-off line 9 ... Step curve part 10 ... Embo 11 ... Swelling ridgeline 12 ... Swelling slope

Claims (1)

From a single layer of nylon, polyethylene, polyethylene terephthalate or other synthetic resin film or a laminate sheet of two or more of these, or a laminate sheet in which an aluminum foil layer, an aluminum vapor deposited film layer or a silica vapor deposited film layer is interposed between the laminated sheets A substantially rectangular bag body (1) that seals the peripheral edge by providing a fluid accommodating portion between the front and back synthetic resin flexible sheets on which synthetic resin flexible sheets having a thickness of 100 to 250 microns are stacked. The one side sealing edge (2a) of the bag (1) is formed into a gently concave arc-curved edge extending from the bottom of the internal fluid storage part to the square corner (6), and the one of the ones thus formed is formed. and side shielding edge (2a), to form the tapered spout guideway consists and was gently inclined upper sealing edge (2b) towards the square corner (6) (7) together The pouring guideway of the upper sealing edge (2b) (7) near the base, to form the bag (1) stepped bending portion narrowed inward (9), pouring guideway bag (1) ( When the 7) is faced down, the upper side edge (2b) of the bag body (1) is formed by the edge shape of the bag body (1), the flexibility of the bag sheet base material, and the weight of the fluid flowing downward. recoverable elastic dimple that stepped curved portion (9) toward the inside of the bag sheet substrate) (10) is formed, said spout guideway (7) Table resiliently deformed by the elastic dimple (10)・ A fluid packaging container that is configured to be reversibly expanded on both sides.

Images