JPH1149194A - Extrudable liquid container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container for liquid with which liquid in the container can be extruded in several times, and the liquid inside does not leak even when the container falls down when not in use. SOLUTION: This extrudable container for liquid is made of a front and a back two sheet synthetic resin films whose periphery 1 is sealed, and a protruding spout part 2 is provided in the periphery. The spout part 2 of the container for liquid is provided with a pipe 3 buried between the front and the back two synthetic resin sheets and the tip end of the pipe 3 is closed with a sealing member 4 provided with a small hole or a notch. It is preferable that the pipe is provided with a fin on its side, and that the bag is shaped with a bottom.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid container which can extrude and discharge a liquid in a bag in a number of steps, and which does not leak contents when it is not used.

[0002]

2. Description of the Related Art Conventionally, a flexible synthetic resin made of a flexible resin having a spout with a small hole is provided so that a liquid in a container can be extruded and discharged in a number of times. Bottles are known. This flexible synthetic resin bottle is often used as a container for liquids such as shampoo, body soap, dishwashing detergent and the like. The user presses the side of the bottle to discharge a desired amount of the contents for use. However, in recent years, this flexible synthetic resin bottle has been viewed as a problem from the viewpoint of saving resources and from the viewpoint of bulky disposal. An object of the present invention is to provide a liquid container which can extrude and discharge a liquid in a bag in a number of times, and which does not leak out even if it collapses when not in use, and which is small when used. I do.

[0003]

That is, according to the present invention, the periphery of two front and back synthetic resin films is sealed, and a protruding pouring portion is provided around the periphery, and the pouring portion is composed of two front and back synthetic resin films. A liquid container in which a pipe is embedded between resin films, the pipe having a tip end closed by a closing member provided with a small hole or cut. The pipe is preferably provided with fins on the side. The bag preferably has a shape with a bottom.

[0004]

FIG. 1 shows an example of an extrudable liquid container, and is a front view showing a state in which a liquid is filled and sealed. FIG. 2 is a sectional view taken along line AA in FIG. Reference numeral 1 denotes a sealing portion that seals the periphery of the liquid container, which is indicated by hatching. Numeral 2 denotes a protrusion forming a pouring portion. The projecting pouring portion 2 has a pipe 3 inserted between the front film 6 and the back film 7 to seal the projecting pouring portion 2 and bury the pipe 3. It has a structured structure. In order to embed the pipe 3 in the above-mentioned protruding spout 2,
The pipe 3 is inserted into a predetermined position between the substrate 3 and the back film 7, and then a mold is applied from both sides to perform heating and pressing. By heating and pressing with a mold from both sides, the surface film 6
Since a sealant layer of a heat-adhesive resin is provided on the inner surface of the back film 7 and the back film 7, heat sealing is performed and the pipe is buried in a fixed state. Seal portions 8 and 9 are present on both sides of the pipe 3 in a fin shape, and a seal portion 10 is present at a tip portion.

The tip of the pipe 3 is closed by a closing member 4, and the closing member 4 may project outward in a dome shape or may be flat. This closing member 4 is preferably formed integrally with the pipe. A small hole or notch 5 is provided at substantially the center of the closing member. This small hole or cut 5 serves as a spout for the liquid in the bag. The shape of the small hole may be circular, elliptical, or star-shaped, and in the case of a circular shape, the diameter is about 0.5 to 5 mm. Although the shape of the cut is arbitrary, examples thereof are shown in FIGS. 1
3 is a score line. Preferably, the pipe and the closing member are made of a soft synthetic resin. The above-mentioned pipe is formed of a medium density or high density polyethylene, polypropylene, a resin composition obtained by blending an elastomer with these polyolefin resins, or polyvinyl chloride. The length of the pipe is 10-30 mm.
The outer diameter and the inner diameter of this pipe are preferably an outer diameter of 5 to 17 mm and an inner diameter of 4 to 16 mm. The thickness of the pipe is 0.
3 to 2.0 mm is preferred.

In order to discharge the contents of the liquid from the liquid container shown in FIG. 1, the point AA of the protruding pouring portion 2 of the liquid container is cut with scissors or the like to separate the tip portion 10 of the seal portion, and the pipe is cut off. The small hole or cut 5 at the tip is exposed, and then the bag body is pressed by hand. Small holes or cuts 5
Discharged from When the pressing is stopped, the discharging stops. Therefore, the desired amount can be discharged little by little. This function is more effectively exhibited when a soft synthetic resin is used for the pipe and the closing member. That is, when the bag body is pressed by hand to discharge the contents liquid, the pressing deforms the hole or the cut portion of the closing member, particularly the cut portion, so that the liquid is easily opened and the liquid is easily discharged. This is because the cut returns to the normal state and the liquid does not leak. When the amount of liquid in the bag decreases, the liquid can be discharged smoothly by tilting and collecting the liquid at the pipe outlet and pressing.

Since the liquid is discharged from the extrudable liquid container of the present invention by extruding the liquid as described above, stress is applied to the pipe at this time. Therefore, it is preferable that the pipe buried between the front surface film 6 and the back surface film 7 of the protruding pouring portion 2 is firmly adhered so as not to jump out when pressed. In order to adhere the pipe firmly, it is good to bury the pipe with fins on the side. It is preferable to provide a pair of fins on both sides of the pipe. The shape is arbitrary, but an example is shown in the perspective view of FIG. 3 is a pipe, and 11 and 12 are fins. The fins may be gradually thinned from the base of the fin as shown in FIG. 3A, or may be made the same thickness from the base as shown in FIG. Further, the fins may be provided continuously on the pipe side as shown in FIGS. (A) and (B), or may be provided discontinuously as shown in (C). When provided discontinuously, the fins may be provided only at both ends of the pipe, or may be provided at intervals in a comb shape. The width of the fin is preferably 1 to 4 mm. If it is 1 mm or less, the effect of providing the fin is not
On the other hand, when the diameter is 4 mm or more, the fins protrude from the peripheral seal portion, and the peripheral seal portion is undesirably affected.
The thickness is preferably 0.5 to 2 mm at the base of the pipe.

The use of such a finned pipe increases the area of adhesion between the pipe 3, the front film 6, and the back film 7, so that the pipe can be firmly bonded. When the fins are provided discontinuously, the adhesive between the front film 6 and the back film 7 is interposed between the fins. , Can prevent the pipe from shifting. Further, a gap is easily formed along the pipe 3 at a portion where the front film 6, the back film 7 and the pipe 3 are in contact with each other. However, if a fin is provided, the fin closes the gap and prevents liquid leakage from the gap. You can do it. FIG. 4 is a cross-sectional view at the same place as FIG. 2 when a pipe having fins shown in FIG. 3C is embedded.

In the above example, the front film 6 and the back film 7 are adhered over the entire surface of the pipe 3, but the root portion of the pipe 3 is adhered to the front film 6 and the back film 7, and the front end of the pipe 3 The portion may not be adhered to the front film 6 and the back film 7.
By doing so, the front portion of the pipe 3 is not adhered to the front and back films 6 and 7, so that the front and back films 6, 7 can be easily removed in use, and the front and back films 6, 7 can be removed.
When the pipe 7 is removed, the tip of the pipe 3 can be easily exposed. Also, in order to facilitate the work of removing the front and back films 6 and 7, pipe side seal portions 8 and 9 are used.
A tear opening (notch) may be provided on either one or both. Also, a tear line may be made in the front and back films 6 and 7 at the site of the tear-cut to facilitate the tear-cut.

The two front and back synthetic resin films constituting the extrudable liquid container of the present invention may be made of a conventionally used material such as a biaxially oriented polypropylene film, a biaxially oriented polyamide film, a biaxially oriented polyester film, Based on various films such as ethylene-vinyl alcohol copolymer film, these base films,
A composite film in which an olefin-based heat-adhesive resin such as low-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer, or polypropylene is laminated as a sealant layer is used. In this case, a plurality of the above-mentioned various films may be laminated on the substrate in order to enhance the protection of the contents, and a metal thin film layer such as an aluminum foil may be used. In addition, the shape of the container is preferably, but not limited to, a shape having a bottom because it can be placed upright when not in use. If a scale is provided on the surface of the container, the used amount or the remaining amount can be known.

[0011]

According to the present invention, the extrudable liquid container can be easily opened, and the liquid can be discharged by pressing the side surface of the container. Can be taken out in desired amounts little by little. Also, even if the container is turned down when not in use, the liquid content does not leak. And since used containers become smaller, disposal can be performed easily.

[Brief description of the drawings]

FIG. 1 is a plan view of an example of an extrudable liquid container of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing an example of a pipe buried in the extrudable liquid container of the present invention.

FIG. 4 AA of another example of the extrudable liquid container of the present invention.
Cross section of line

FIG. 5 is a view showing an example of the shape of a cut in a closing member of a pipe embedded in an extrudable liquid container according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Seal part, 2 protrusion-like pouring parts, 3 pipes, 4 pipe closing members, 5 small holes, 6 front side film, 7 back side film, 8, 9 pipe side seal part, 10
Seal part tip, 11, 12 Fin, 13 Cut line

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Naohiro Nomura 1-4-16-1 Nihombashi Bakurocho, Chuo-ku, Tokyo Inside Fujimori Kogyo Co., Ltd.

Claims (3)

[Claims] The present invention is characterized in that the periphery of two front and back synthetic resin films is sealed, and a projected pouring portion is provided in the periphery thereof, and the pouring portion has a pipe buried between the two front and back synthetic resin films. An extrudable liquid container, characterized in that the pipe is closed at its tip with a closing member provided with a small hole or cut. 2. The extrudable liquid container according to claim 1, wherein the pipe has fins on its side. 3. The extrudable liquid container according to claim 1, wherein the bag has a bottomed shape.