JP2010228764A - Spouted container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spouted container that excels in barrier property, is easy to manufacture at a low cost, and makes it easy to discharge an object to be accommodated. <P>SOLUTION: The spouted container has an accommodating portion 4 for accommodating object to be accommodated, which is formed by superposing sheet-like members 3a and 3b and welding the periphery of the same. The container includes a spout 10 inserted between the superposed sheet-like members and having a communication hole 12 for the communication of the object to be accommodated in the accommodating portion 4, and a cap 16 for closing the communication hole 12. In addition, the container includes a first welded portion 20, in which the sheet-like members are welded in a pair so that a small hole 20a smaller than the communication hole is formed on the same axis of the communication hole 12; and a second welded portion 25, in which the sheet-like members are welded in a pair so that a passage 27 that gradually reduced in diameter toward the small hole from the communication hole 12 is formed in a space 22 defined by the first welded portion 20. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a container in which sheets of flexible synthetic resin are stacked, and in particular, to a container with a spout on which a spout (called a spout) for pouring out the contents is welded.

  2. Description of the Related Art Conventionally, a spout-equipped container is known in which a synthetic resin sheet (plastic film) is stacked and welded (heat-welded), and spout is welded (heat-welded). Such a spout-equipped container is filled with a container such as a liquid or a semi-fluid inside, and the contents are poured out through the spout, which is inexpensive, lightweight and easy to handle. Because of its superiority, it is used in various fields such as the medical field, daily necessities such as cosmetics and sanitary goods, and office supplies.

  In general, the spouted container as described above makes it easy to thermally weld the spout between synthetic resin sheets and enhances the gas barrier property and light shielding property (hereinafter referred to as barrier property) of the stored material. Further, it is known that a composite resin sheet is used for the synthetic resin sheet constituting the container. For example, using a thermoplastic resin (polyethylene) polymerized with ethylene as the base material and a material excellent in gas barrier properties on its outer layer side, for example, a sheet-like composite material in which nylon, polyethylene terephthalate, aluminum foil, etc. are laminated Is forming.

  By the way, in the general container with a spout, even if it is before opening a spout, it has the structure where a stored item contacts with the spout which was welded. For this reason, also about spout itself, the device which raises barrier property is given, for example, as indicated by patent documents 1.

JP 2001-213455 A

  The above-described known technology has a structure in which a blocking body excellent in barrier properties is integrally inserted into the inner wall of the cylindrical portion (mouth) through which the stored article passes when the spout is injection molded. There is a possibility that the resin flows into the surface of the blocking body at the time of molding, and there are problems that the manufacturing is difficult and a complete blocking effect cannot be obtained. In addition, the above-mentioned publicly known literature also introduces the formation of the spout itself with a multilayer structure having a layer having an excellent barrier property, but there is a problem that the cost increases.

  It should be noted that it is possible to configure the container so as not to move (contact) the spout side by welding a predetermined region of the container and providing a self-sealing check valve. If a self-sealing check valve is provided, it is difficult to pour out the contents. In particular, when a liquid item is accommodated as a container, it is necessary to open the self-sealing check valve using a jig or the like, but depending on the type of the container, such a jig may not be used. Yes, it may be undesirable in the dispensing operation.

  The present invention has been made by paying attention to the above-described problems, and has an object to provide a spout-equipped container that is excellent in barrier properties, can be manufactured at low cost, and can easily be poured out. .

  In order to achieve the above-described object, the present invention includes a storage portion that stores sheets by stacking sheet-shaped members and welding the periphery, and is interposed between the stacked sheet-shaped members. And a spout-equipped housing having a spout having a communication hole through which the material accommodated in the housing portion passes and a plug that closes the communication hole, and coaxially with the communication hole, from the communication hole. In order to form a small hole having a small diameter, a small hole is formed from the communication hole into the first welded portion in which the sheet-like members are welded in pairs and the space formed by the first welded portion. And a second welded portion in which the sheet-like members are welded in pairs so that a flow path gradually decreasing in diameter is formed.

  According to the spouted container having the above-described structure, it is possible to project the gradually narrowed flow path formed by the second welded portion through the small hole formed by the first welded portion. . The flow path protruding through the small hole is in a state in which the tip thereof is closed, and when the communication hole is closed by the plug, the first welding is performed when the stored object is stored in the storage portion and the internal pressure is increased. In addition to the region of the part, the surrounding region of the protruding flow path is brought into close contact with each other to constitute a self-sealing check valve. As a result, since the contents stored in the storage portion are prevented from moving to the communication hole of the spout, it becomes possible to maintain the barrier property of the spout part, and the spout itself is made of a material having a high barrier property. There is no need to form the film, and the cost can be reduced.

  When the plug is opened in a state where the storage object is stored in the storage portion, the spout side is in a low pressure state with respect to the storage portion, so that pressure acts on the peripheral region of the flow channel in a state protruding from the small hole. As a result, the closely contacted sheet-like member is expanded. For this reason, the contents can be moved to the surrounding area of the channel in the protruding state, and the contents pass through the channel between the second welding parts through the small holes and move to the communication hole of the spout. It becomes possible to do. That is, the accommodated item accommodated in the accommodating part can be poured out through the flow path formed by the second welded part by opening the plug.

  The first welded portion and the second welded portion described above can be formed, for example, during the spout welding step, and in particular, it is not necessary to perform special processing or the like for ensuring barrier properties on the spout portion. In addition, it is possible to manufacture a spout-equipped container with good barrier properties at the spout part and easy to pour out the contents at low cost.

  ADVANTAGE OF THE INVENTION According to this invention, the container with a spout which is excellent in barrier property, can be manufactured cheaply, and is easy to pour out a stored matter comes to be obtained.

The front view which showed 1st Embodiment of the container with a spout which concerns on this invention. The figure which expands and shows the principal part of FIG. It is a figure which shows the state which accommodated the accommodated material (liquid) in the accommodating part, (a) is a figure which shows the state which sealed the plug, (b) shows the state which removes the plug and flows out the accommodated thing Figure. The front view which showed the 2nd Embodiment of this invention and expanded the spout part. The perspective view which looked at the spout part from the accommodating part side in the structure shown in FIG.

Hereinafter, embodiments of a container with a spout according to the present invention will be described with reference to the drawings.
1 to 3 are views showing a first embodiment of the present invention. FIG. 1 is a front view showing a spout-equipped container, and FIG. 2 is an enlarged view showing a main part of FIG. 3A and 3B are views showing a state in which the storage object (liquid) is stored in the storage portion. FIG. 3A is a view showing a state in which the plug body is sealed. FIG. It is a figure which shows the state which flows out an object.

  The spout-equipped container 1 according to the present embodiment is configured, for example, in the form shown in FIG. The spout-equipped container 1 is formed by superimposing sheet-like members 3a and 3b, and heat-sealing the periphery indicated by oblique lines with a heat bar or the like, and heat-welding a spout 10 molded with plastic or the like at a predetermined location (in the surrounding area Created by intervening).

  The sheet-like members 3a and 3b are made of a flexible synthetic resin sheet (plastic film), for example, polyethylene or polypropylene so as to be easily welded. In addition, it is composed of a so-called composite layer in which nylon, aluminum foil, and the like are laminated so as to enhance the barrier property against the contents.

  The sheet-like members 3a and 3b are heat-welded in the shaded area shown in the figure with a heat bar, thereby forming a spout-equipped container 1 having a container part 4 in which a container such as a liquid or a semi-fluid is stored. Is done. In this case, the spouted container 1 may be configured as a self-solid body by forming a side wall or a bottom wall, or simply configured as a non-self-solid body in which the peripheral portions of the sheet-like members 3a and 3b are welded. May be. In other words, the welded portion, the arrangement of the sheet-like members constituting the bag, and the like can be appropriately modified according to the intended use and are not particularly limited.

  When welding the sheet-like members 3a and 3b, a spout 10 is interposed in the upper edge portion 5 to perform a welding process. The spout 10 of the present embodiment is integrally formed of, for example, a synthetic resin such as polyethylene or polypropylene (it is not particularly necessary to be formed of a material having a barrier property), and a sheet-like member 3a, A welding portion 11 having a boat shape in cross section is formed integrally so that 3b can be easily welded, and the sheet-like members 3a and 3b are welded so as to sandwich the welding portion 11.

  The main body 10 </ b> A is formed with a communication hole (a cross section is formed in a circular shape) 12 through which an object stored in the storage portion 4 passes, and the communication hole 12 is formed in the welded portion 11. And a substantially cylindrical mouth portion 15 that protrudes outside the housing portion 4. That is, an opening for defining the communication hole 12 is formed in the mouth portion 15, and the contents stored in the storage portion 4 are poured out from the opening through the communication hole 12.

  The opening that defines the communication hole 12 is sealed (closed) by a plug 16. Specifically, the plug body 16 of the present embodiment is detachably connected to the mouth portion 15 and is detachably fitted to the mouth portion 15. For this reason, at the time of the first use, the plug body 16 is detached from the opening 15 by detaching the plug body 16 from the opening, and after the container is poured out with the opening exposed, the plug body 16 is removed. By being inserted into the opening, the contents can be closed again.

  The sheet-like members 3a and 3b are welded portions (hereinafter referred to as first welded portions) 20, which are welded so as to form a pair from both sides of the welded portion 11 of the spout 10 to the lower side of the communication hole 12. 20 is formed. The first welded portions 20 and 20 are formed by welding the sheet-like members 3 a and 3 b so as to extend linearly from both sides of the welded portion 11, and are coaxial with the communication hole 12. Above, it welds so that the small hole 20a used as a diameter smaller than the communicating hole 12 may be formed.

  Further, the sheet-like members 3a and 3b are formed in the space portion 22 formed by the first welded portions 20 and 20 so that a flow path 27 that gradually decreases in diameter from the communication hole 12 toward the small hole 20a is generated. Are welded so as to form a pair. Second welded portions 25, 25 are formed. In this case, in the second welded portions 25, 25, a flow path 27 that gradually decreases in diameter toward the small hole 20a is formed, and the flow path 27 finally protrudes from the small hole 20a and is closed ( As will be described later, it may be configured to be in a closed state like a conical top.

  In the present embodiment, the second welded portions 25, 25 are formed on the lower side of the communication hole 12 with a predetermined distance away from the first welded portions 20, 20, and move downward. The two are welded so as to have a symmetrical shape so as to approach each other. As a result, on the lower side of the communication hole 12, a weight-shaped flow path, specifically, a substantially conical flow path 27 having a circular cross section is formed so as to continue from the communication hole 12. And the top part 27a of the flow path 27 formed in the weight shape in this way protrudes from the small hole 20a to the accommodating part side, and the tip is in a closed state. As will be described later, by opening the plug body 16 in the flow path 27, the close contact area around the flow path 27 is expanded, and the contents can flow into the flow path 27.

  According to the spout-equipped container 1 having the above-described structure, when an object such as a liquid is accommodated in the accommodating part 4 and the plug 16 is fitted into the mouth part 15, FIG. 2 and FIG. As shown in FIG. 3 (a), the region of the first welded portion 20, 20 and the peripheral region (S) of the protruding portion of the flow path 27 formed by the second welded portion 25, 25 through the small hole 20a. The hatched area indicated by) constitutes a self-sealing check valve because the internal pressure is increased by the accommodation of the contents and the sheet-like members 3a and 3b are brought into close contact with each other. For this reason, the accommodated object accommodated in the accommodating part 4 comes to be prevented from moving to the communication hole 12 of the spout 10 (the accommodated object does not flow into the space part 22).

  Thereby, since it becomes possible to maintain the barrier property about a spout part, it becomes unnecessary to form spout itself with a material with high barrier property, and it comes to reduce cost.

  When the plug 16 is opened from the mouth portion 15, the spout side is in a low pressure state with respect to the housing portion 4, and pressure is applied to the surrounding region S of the flow path 27 in a state protruding from the small hole 20 a, so The sheet-shaped member that has been pushed is expanded. For this reason, the contents can be moved to the surrounding area S of the flow path 27 in the protruding state, and the contents are directly passed through the small holes 20a as shown in FIG. It becomes possible to move to the spout communication hole 12 through the flow path 27 between 25 and 25. That is, the accommodated item accommodated in the accommodating part 4 can be poured out through the flow path 27 formed by the second welded part by opening the plug body 16.

  In addition, it is also possible to increase the amount of extraction by externally applying a pressing force to the accommodating portion 4.

  When the first welding parts 20 and 20 and the second welding parts 25 and 25 configured as described above are welded to the spout 10 (the cross-section boat-shaped welding part 11), the sheet-like members 3a and 3b, It can be formed integrally using the same heat bar. That is, at the time of the welding process of the spout 10, it can be formed at the same time by the simultaneous or continuous welding process, or it can be formed by welding at the time of bag making processing. This eliminates the need to previously form a check valve structure.

  As described above, since it is no longer necessary to perform special processing to secure the barrier property of the spout part, a spout-equipped container with good barrier property in the spout part and easy to pour out the contents can be manufactured at low cost. It becomes possible to do.

  In addition, when opening the plug body 16 from the mouth part 15 and pouring out the contents accommodated in the accommodating part 4, the size of the small hole 20a, the second welded part 25, It is possible to adjust by changing the width (axial length) of the flow path 27 formed by 25 or the amount of protrusion of the flow path 27 with respect to the small hole 20a. In this case, as shown at least in FIG. 3A, even if the spouted container 1 is tilted with the plug body 16 fitted into the opening of the mouth portion 15, the surrounding area of the flow path 27 protruding from the small hole 20a What is necessary is just to be comprised so that a self-sealing check valve may be formed by S. In other words, even if the container 1 with a spout is tilted, the structure of each part described above can be appropriately modified as long as the stored object is not moved to the spout part (communication hole 12). .

  4 and 5 show a second embodiment of the present invention. FIG. 4 is an enlarged front view of the spout portion, and FIG. 5 is a perspective view of the spout portion as seen from the accommodating portion side.

  In the present embodiment, a cylindrical body 30 having a communication hole 32 that protrudes into the space 22 and has an elliptical cross section is integrally formed with the spout body 10A. The cylindrical body 30 is formed with a pair of leg portions 33, 33 facing the housing portion 4 so that the second welded portions 35, 35 can be easily formed. That is, the cylindrical body 30 has a pair of leg portions 33, 33 such that the flow passage 37 continuing from the communication hole 32 gradually decreases in diameter toward the small hole 20 a formed by the first welded portions 20, 20. Thus, the flow path 37 having the same function as in the first embodiment is easily formed by spot welding the sheet-like members 3a, 3b along the leg portions 33, 33. It is possible.

  In addition, the flow path 37 is comprised by the weight shape which the cross section became substantially elliptical, and the cylindrical body 30 is formed so that the top part 37a of a flow path may protrude from the small hole 20a. Moreover, it is preferable to incline the pair of leg portions 33, 33 so that the thickness gradually decreases as the pair moves to the housing portion side. Such a pair of inclined legs can be easily formed by cutting from the upper end position of the surface of the cylindrical body 30 toward the center while moving downward. Such leg portions may be integrally formed by molding.

  The inclined surfaces formed on the leg portions are formed on both sides of the cylindrical body 30 facing the sheet-like members 3a and 3b. By forming such inclined surfaces, the second welded portion is formed. 35 and 35 can be formed more easily.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made.

  For example, the attachment position of the spout 10 described above and the formation positions of the first welded portion 20 and the second welded portions 25 and 35 associated therewith can be variously modified such as being disposed at the corners of the container. Is possible. The configuration of the spout 10 can be modified as appropriate. For example, the cylindrical body 30 in the second embodiment shown in FIGS. 4 and 5 may be formed into a cylindrical shape, or may be appropriately modified such that the plug body 16 is a screw-type cap.

  Further, the small hole formed by the first welded portion 20 may be disposed coaxially with the spout communication hole, that is, on the flow path defined by the communication hole.

DESCRIPTION OF SYMBOLS 1 Spout containing body 3a, 3b Sheet-like member 4 Storage part 10 Spout 11 Welding part 12, 32 Communication hole 16 Plug body 20 First welding part 20a Small hole 25, 35 Second welding part 27, 37 Flow path

Claims (4)

A sheet-like member is stacked, and a container is provided that accommodates an object by welding the periphery, and is interposed between the stacked sheet-like members and passes through the object accommodated in the container. In a container with a spout having a spout comprising a communicating hole to be made and a plug that closes the communicating hole,
A first welded portion welded to form a pair of the sheet-like members so that a small hole having a smaller diameter than the communication hole is formed coaxially with the communication hole;
A second weld in which the sheet-like members are welded in pairs so that in the space formed by the first weld, there is a flow path that gradually decreases in diameter from the communication hole toward the small hole. And a spouted container.   The second welded portion is formed such that a conical channel is formed between the communication hole and the small hole, and a top portion of the conical channel protrudes from the small hole into the accommodating portion. The spouted container according to claim 1, wherein the container has a spout. The spout is provided with a cylindrical body that is formed with the communication hole and protrudes into the space portion,
The spout according to claim 1 or 2, wherein the cylindrical body is formed with a pair of legs, and the second welded part is formed along the pair of legs. Containment body.   The said pair of leg part is inclined so that thickness may reduce gradually toward an accommodating part, The container with a spout of Claim 3 characterized by the above-mentioned.

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