JP6012966B2 - Container with spout - Google Patents

Description

  The present invention relates to a container in which sheets of flexible synthetic resin are stacked, and in detail, a spout (called a spout) integrally formed with resin or the like is welded to pour out the container. It relates to a container with a spout that has been made possible.

  2. Description of the Related Art Conventionally, a container in which synthetic resin sheet-like members (plastic film) are stacked and the peripheral portions thereof are welded (thermally welded) is known. Such a container is inexpensive, lightweight, and easy to handle. Therefore, the container is used in various fields such as medical fields, daily necessities such as cosmetics and sanitary goods, office supplies, and foods. By the way, in such a container, an anaerobic liquid may be stored, and such a container may be left as it is after being opened and poured out. It is preferable to have a reseal structure so that inflow of outside air can be prevented.

  For example, Patent Document 1 discloses a container having an adhesive nozzle formed as having such a reseal structure. This nozzle is constructed so that two sheets of flexible sheets are stacked and the inner surface thereof is in close contact after filling the container, and after the internal pressure of the container is raised and the container is poured out, The at least one flexible sheet is bent so that the degree of adhesion can be increased and resealed.

JP 2001-192045 A

  The container described above has a nozzle so that the nozzle part is always in close contact with the container in a normal state after filling the container, and at least one side is bent to obtain a sealing property after the container is poured out. Since it is a structure which provides the boundary line used as a crease to the flexible sheet | seat which comprises, it is not easy to manufacture and will also raise manufacturing cost. In addition, after the actual dispensing operation, the functions as described above may not be sufficiently exhibited, and the sealing performance may not be sufficient.

  The present invention has been made paying attention to the above-described problems, and has a spout that can be reliably prevented from flowing out of the outside air into the housing portion when the structure is simple and the contained material is poured out. The purpose is to provide a body.

In order to achieve the above-described object, the present invention is provided with an accommodation portion in which an accommodation object is accommodated by stacking sheet-like members and welding the periphery, and an ejection channel through which the accommodation object is dispensed. And a spout that is interposed at an edge of the sheet-like member and causes the contents in the storage part to flow out into the extraction flow path of the nozzle part. The spout is formed in a flow path for pouring the contents to the outside, a welded portion having a substantially boat-shaped cross section in which an edge of the sheet-like member is welded, and the welded portion. An outflow port for allowing the contained material to flow out into the extraction flow path of the nozzle portion, and the outflow port is in a closed state by the pressure contact of the sheet-like member to the distal end surface of the convex portion , cavity and the sheet-shaped member in Note Izuru path of the nozzle portion Adhesion portion for adhesion by pulling the inner surfaces force has been formed, when pressed to the receiving portion in a state of breaking the nozzle portion, the housing comprises, spread the sheet-like member for closing the outlet It is possible to pour out from the nozzle part by moving so as to widen the close contact part from the cavity part, and when the pressing of the container is released, the contents are stored in the cavity part, The contact portion is again brought into close contact by the tensile force between the inner surfaces of the sheet-like members .

  In the container with spout having the structure described above, when a pressing force is applied to the container, the container flows from the spout channel into the discharge channel of the nozzle unit through the outlet formed in the welded part. It becomes possible to pour out from the tip of the nozzle part. In the spout, a sheet-like member is welded to the welded portion, so that a hollow portion (a non-contact portion where the inner surface of the sheet-like member is not in close contact) and a close-contact portion (sheet-like member) Part where the inner surfaces of each other are in close contact with each other by a tensile force. For this reason, by cutting the tip of the nozzle part and pressing the container part to increase the internal pressure, the container is moved out from the cavity part so as to expand the contact part and is poured out from the cut part. Then, when the pressing of the container portion is released, the stored material is stored in the cavity of the extraction flow path, and the close contact portion before that comes back in close contact with the tensile force. In this case, the close contact portion is in a state in which a sealing film of the accommodation is formed by capillary force, and together with the accommodation stored in the cavity, the outside air flows from the outflow port formed in the welded portion to the housing. Prevents entry and exerts a sealing function.

  ADVANTAGE OF THE INVENTION According to this invention, when a structure is simple and it pours out a stored object, the container with a spout which can prevent reliably that external air flows in into an accommodating part is obtained.

The whole block diagram which shows one Embodiment of the container with a spout which concerns on this invention. (A) is a perspective view which shows a spout in FIG. 1, (b) is an expanded sectional view of the outflow port part formed in a welding part. The figure which expands and shows the spout part welded to a container. (A) is sectional drawing along the AA line of FIG. 3, (b) is an expanded sectional view which shows a sealing state, (c) is an expanded sectional view which shows the extraction | pouring state. The figure which shows the cut position of the front-end | tip of a nozzle part when pouring out a contained thing. The figure which shows the state which cut | disconnects the front-end | tip of a nozzle part and pours out what is contained. (A) is a perspective view which shows the modification of a spout, (b) is an expanded sectional view of the outflow port part formed in a welding part. (A) is sectional drawing (figure which shows a sealing state) of the spout shown in FIG. 7, (b) is the expanded sectional view, (c) is an expanded sectional view which shows the extraction | pouring state. The figure explaining the manufacturing method of the container with a spout which concerns on this invention.

Hereinafter, embodiments of a container with a spout according to the present invention will be described with reference to the drawings.
FIGS. 1 to 4 are views showing an embodiment of a container with a spout according to the present invention, FIG. 1 is a diagram showing an overall configuration, FIG. 2 (a) is a perspective view showing the spout shown in FIG. (B) is an enlarged sectional view of the outlet portion formed in the welded portion, FIG. 3 is an enlarged view showing the spout portion welded to the container, and FIG. 4 (a) is taken along the line AA in FIG. 3. FIG. 4B is an enlarged sectional view showing a sealed state, and FIG. 4C is an enlarged sectional view showing a dispensing state.

  The spout-equipped container 1 according to the present embodiment is configured, for example, in a form as shown in FIG. 1, and the container 2 formed by superposing sheet-shaped members 2 a and 2 b having a predetermined shape, It has a spout (spout port) 20 that is interposed between the sheet-like members 2a and 2b and that pours out the contents accommodated in the accommodating portion S of the accommodating body.

  The sheet-like members 2a and 2b include an upper edge portion 5, side edge portions 6 and 7, a lower edge portion 8, and an inclined edge portion 9 that is inclined from the upper edge portion 5 to the side edge portion 6. The container 2 is formed by heat-welding the edge with a heat bar (not shown) (the welded portion is indicated by a hatched area). Further, of these edges, welding is performed at a substantially central position of the inclined edge 9 so as to project outward and become the nozzle 10, and the nozzle 10 has both side edges 10 a and 10 b and a top 10 c. Is heat-welded, and thus has a structure having an extraction flow path 10A. In the present embodiment, when the lower edge portion 8 is welded, the bottom portion 8a is welded and is configured as a self-solid body. However, a non-self-solid body that is simply welded to the peripheral portions of the sheet-like members 2a and 2b ( It may be configured as a bilateral, a trigonal, etc. That is, with respect to the container 2, the parts to be welded, the arrangement of the sheet-like members constituting the bag, the shape of the container S, and the like can be modified as appropriate according to the intended use, etc. It is not limited to.

  The sheet-like members 2a and 2b are made of a flexible synthetic resin sheet (plastic film), for example, polyethylene or polypropylene so as to be easily welded. It is composed of a so-called composite layer in which nylon, aluminum foil, etc. are laminated so as to enhance the properties.

  In addition, a part of the edge portion, in this embodiment, the upper edge portion 5 is not welded to form an opening 5a, and the accommodation portion S of the container 2 is filled with the accommodation through the opening 5a. It is supposed to be.

A spout 20 is welded to the base portion of the nozzle portion 10 to allow the contents filled in the storage portion S to flow out into the extraction flow path 10A of the nozzle portion 10. That is, the spout 20 is interposed and welded to the inclined edge portion 9 of the sheet-like member 2a, 2b corresponding to the position where the nozzle portion 10 is formed.
Here, with reference to FIG. 2, the structure of the spout 20 interposed in the inclined edge part 9 of the said sheet-like members 2a and 2b is demonstrated.

  The spout 20 to be welded has a main body 21 integrally formed of a synthetic resin such as polyethylene or polypropylene. The main body 21 is formed with a welded portion 22 that is welded to the sheet-like members 2a and 2b. In addition, the main body 21 is formed with a flow path 23 (see FIG. 4) through which the contents stored in the storage section S flow out to the outside. Is formed in a hollow shape. And this flow path 23 is obstruct | occluded by the upper end wall 24, and is divided | segmented from the extraction flow path 10A of the said nozzle part. The upper end wall 24 may be formed in a flat shape, or may be bulged in a dome shape as shown in the drawing in consideration of sink marks during thermoforming.

  The welded portion 22 only needs to be shaped so as to be easily welded to the inner surfaces of the sheet-like members 2a, 2b. For example, the cross section corresponds to a boat-like shape, an elliptical shape, or a circular shape. The shape is a substantially boat shape). Then, the superposed sheet-like members 2a and 2b are welded to the welding portion 22 of the spout 20 interposed between the sheet-like members 2a and 2b by a heat bar (not shown).

  In this case, the welded portion 22 of the main body portion 21 has a cavity portion R1 (shown in white) and a close contact portion R2 (shown by hatching) in the extraction flow path 10A of the nozzle portion in relation to the nozzle portion 10. It suffices if the shape is such that (part) is formed. That is, such a cavity portion R1 swells at the welded portion 22 of the intervening spout 20 (thickness in a direction perpendicular to the extraction flow channel 10A), so that it is on the proximal end side of the extraction flow channel 10A. This is a region (hollow portion) in which the inner surfaces of the nozzle portion 10 are not in close contact with each other. And the pouring flow path 10A above the cavity R1 has the inner surfaces brought into close contact with each other by the tensile force due to the welding of the side edges 10a, 10b and the top 10c, and the close contact portion R2 (the portion indicated by hatching). Will come to form. Further, a break line C is formed on the tip side of the nozzle portion 10 so as to cross the contact portion R2.

  The size of the hollow portion R1 can be variously changed depending on the shape of the nozzle portion 10, the material of the sheet-like member, the flow channel width, the flow channel length, the degree of swelling of the welded portion 22 of the spout 20, and the like. Is possible. Further, the close contact portion R2 is a portion that exhibits a sealing effect (outside air blocking effect) described later, and the seal effect is determined by the length of the close contact portion R2, and thus the nozzle portion 10 as in the present embodiment. The shape of the nozzle portion may be a straight line, and it is not particularly necessary to provide a deformed portion, a bent portion, or the like (of course, the shape of the nozzle portion may be deformed depending on the intended use).

  Further, an outlet 25 is formed in the welded portion 22 of the spout 20 to allow the contents to flow out from the flow passage 23 to the extraction flow passage 10A of the nozzle portion 10. In this case, in this embodiment, the outflow port 25 is formed in the welding part 22 of the both sides of a spout main body.

  Here, in the welding part 22 in this embodiment, the welding surface 22A where the discharge channel 10A side of the nozzle part is not welded to the sheet-like member, and the welding surface on which the sheet-like member is closely adhered and welded 22B is formed, and the outflow port 25 is formed in the unwelded region 22A. The unwelded region 22A is recessed from the surface of the welded portion 22 (referred to as the welded surface 22B) so that the sheet-like member is not welded when the sheet-like members 2a and 2b are pressed against the welded portion 22 with a heat bar. It is possible to form a stepped surface, and a convex portion 25a protruding from the welding surface 22B is formed on the stepped surface (which constitutes an unwelded region) 22A. And about this convex part 25a, as shown in FIG.2 (b), it is preferable to form the front-end | tip at a flat surface and to make it the shape where the inner surface of a sheet-like member adheres easily, The outlet 25 is formed.

  As a result, when the inner surface of the sheet-like member is welded to the welded portion 22 (welded surface 22B) of the spout 20, as shown in FIG. 3, the welded surface 22B indicated by the diagonal lines of the grid is welded and the stepped surface 22A. The spouted container 1 which is not welded is manufactured. In addition, after a thing is filled from the said opening 5a part, the opening is welded, and it becomes a container with a spout in which the thing was accommodated.

  As shown in FIGS. 4 (a) and 4 (b), the spout 20 welded as described above has the sheet-like members 2a and 2b on the tip surface of the convex portion 25a by the tensile force in the unwelded region 22A. The outlet 25 is closed by pressure contact. Then, in this closed state, when a pressing force is applied to the storage portion S to increase the internal pressure on the storage portion S, as shown in FIG. It is possible to let the contents flow out and guide them to the nozzle unit 10.

  According to the container 1 with a spout configured as described above, after cutting the fracture line C in FIG. 5, by pressing the storage part S of the container 2 to increase the internal pressure, the container is the spout 20. From the flow path 23, as shown by the arrow in FIG. 4C, the sheet-like member in a close contact state is spread and flows out into the extraction flow path 10A of the nozzle portion 10 along the surface of the step surface 22A. In this case, the nozzle portion 10 is formed with a hollow portion (non-contact portion where the inner surfaces of the sheet-like members are not in close contact) R1 and a close contact portion (portion where the inner surfaces are in close contact with each other by a tensile force) R2. Then, by pressing the storage portion to increase the internal pressure, the stored item is moved from the cavity portion R1 so as to expand the close contact portion R2 and is poured out from the cut portion as shown in FIG. Further, by changing the pressing force, the discharge width at the contact portion R2 can be automatically changed according to the pressing force.

  In addition, since the nozzle part 10 can be easily inserted in the opening part of another storage container at the time of the above-mentioned extraction | pouring operation, it becomes possible to perform the refilling operation | work of a stored material easily.

  Then, when the pressing force of the storage portion S is released after the operation of pouring the storage material, the storage material is stored as it is in the cavity R1 of the nozzle portion 10, and the contact portion R2 ahead of it has a tensile force. Recovers and comes into close contact again. In this case, the close contact portion R2 is in a state where a sealing film of the accommodation is formed by capillary force, and together with the accommodation stored in the cavity R1, the outside air is prevented from entering the accommodation portion and the sealing effect ( Demonstrate outside air blocking effect). Further, by releasing the pressing force of the accommodating portion S, the sheet-like member that has been spread as shown in FIG. 4C is pulled by the tensile force of the convex portion 25a as shown in FIG. 4B. Since it is in close contact with the surface, the sealing effect on the housing portion side is reliably maintained.

  Moreover, since the accommodating body 1 with a spout mentioned above can form the accommodating part S and a nozzle part with the same raw material, a structure is simple and it becomes possible to reduce processing cost.

  In the spout 20 having the above-described configuration, the welded portion 22 is formed by the welded surface 22B to which the sheet-like member is welded and the stepped surface 22A, and the convex portion having the outlet 25 on the stepped surface 22A. 25a is formed so as to protrude from the welding surface 22B, so that it is possible to stabilize the dispensing of the contained items when the accommodating portion S is pressed, and the seal when the pressing force of the accommodating portion S is released. The effect can be further enhanced.

  In addition, although the convex part 25a formed in the welding part 22 of the spout 20 protruded perpendicularly | vertically from the surface of the level | step difference surface 22A in the structure shown in FIG.2 and FIG.3, it shows in FIG.7 and FIG.8, for example You may comprise as follows. That is, by gradually increasing the thickness of the region where the outlet 25 of the welded portion 22 (step surface 22A) is formed, the region where the sheet-like member is in close contact at the time of sealing is expanded, and the sealing effect is enhanced. Is possible.

FIG. 9 is a diagram for explaining an example of a method for producing the spouted container configured as described above.
The spout-equipped container having the above-described configuration is, for example, placed in a state where sheet-like members are stacked, and positioned with a spout 20 at a predetermined position (may be temporarily welded so as not to be removed). Then, it is possible to manufacture by welding the sheet-like member around the overlapped sheet-like member and the welded portion 22 of the positioned spout 20. In this case, when the sheet-like member is welded, an opening is formed at any part of the edge so that the contents can be filled into the accommodating part S (a part of the periphery is not welded). In addition, as indicated by a chain line, welding may be performed so as to form the nozzle portion 10 that protrudes outward from the spout 20 to be welded and includes the pouring flow path 10A for pouring the contents. In forming the nozzle portion 10, welding is performed so that the cavity portion R1 and the close contact portion R2 are formed in the extraction channel 10A.

  According to such a manufacturing method, it becomes possible to manufacture a container with a spout by a simple procedure without incurring costs.

As mentioned above, although embodiment of this invention was described, this invention is not limited to above-described embodiment, It can change variously.
As described above, the attachment position of the spout 20 welded to the edge of the sheet-like member can be appropriately changed according to the shape of the container. Further, the overall configuration of the spout 20, the shape of the welded portion, the position where the outflow port is disposed, and the number of formed portions can be appropriately modified.

  Moreover, since the sealing effect described above can be achieved by the accommodation stored in the cavity R1 and the close contact at the close contact portion R2, the outlet can be appropriately modified. For example, the outflow port may be formed without protruding on the surface portion of the welded portion, or may be formed on the upper end wall 24 portion in addition to the welded portion 22 described above. In this case, with respect to the cavity portion R1 and the close contact portion R2 of the nozzle portion 10, by applying a pressing force (pressing the storage portion S by hand) in a state where the storage object is stored in the storage portion S, the internal pressure is increased. When a flow path through which the stored matter flows out is generated and the internal pressure of the storage portion S is reduced by releasing the pressing force, the tensile force is recovered, and the inner surfaces of the bag-like members are again brought into close contact with each other in the storage portion. What is necessary is just to set so that outside air may flow in.

DESCRIPTION OF SYMBOLS 1 Container 2a with a spout, 2b Sheet-like member 10 Nozzle part 10A Outflow flow path 20 Spout 21 Main body part 22 Welding part 23 Channel 25 Outflow port R1 Cavity part R2 Close contact part

Claims (3)

An accommodation body in which an accommodation portion in which the accommodation is accommodated by stacking the sheet-like members and welding the surroundings, and a nozzle portion that is provided with an extraction flow path through which the accommodation is poured out and is broken, are formed.
A spout that is interposed at an edge of the sheet-like member, and causes the contents in the storage part to flow out into the extraction flow path of the nozzle part;
In a container with a spout having
The spout is formed in a channel for pouring the contents to the outside, a welded portion having a substantially boat-shaped cross section in which an edge of the sheet-like member is welded, and a nozzle portion from the channel. An outflow port for discharging the contents to the pouring channel of
The outlet is formed in a convex portion protruding from the surface of the welded portion,
The outlet is in a closed state when the sheet-like member is pressed against the tip surface of the convex portion by a tensile force,
In the dispensing flow path of the nozzle part, a close contact part is formed in which the cavity and the inner surface of the sheet-like member are in close contact with each other by a tensile force,
When the accommodating portion is pressed in a state where the nozzle portion is broken, the accommodation moves so as to spread out the sheet-like member that closes the outflow port, and expands the contact portion from the cavity portion. And can be poured out from the nozzle part,
When the pressing of the storage portion is released, the stored material is stored in the hollow portion, and the close contact portion comes into close contact again by the tensile force between the inner surfaces of the sheet-like members. The welded portion is formed with an unwelded region where the discharge flow path side of the nozzle portion is not welded to the sheet-like member, and a weld surface on which the sheet-like member is welded,
The spouted container according to claim 1, wherein the outflow port is formed in the non-welded region. The unwelded region is formed as a stepped surface that is recessed from the surface of the welded portion,
3. The spouted container according to claim 2 , wherein a convex portion having the outlet is formed on the step surface so as to protrude from the welding surface.

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