JP5415142B2 - Container - Google Patents

Description

  The present invention relates to a container in which sheets of flexible synthetic resin are stacked, and more particularly to a container having a spout.

  Conventionally, for example, as disclosed in Patent Document 1, a container is known in which synthetic resin sheet-like members (plastic film) are stacked and the peripheral portions thereof are welded (thermally welded). Such a container is inexpensive, lightweight and excellent in handleability, and thus is used in various fields such as the medical field, the daily necessities field such as cosmetics and sanitary goods, and the office supplies field. The container disclosed in Patent Document 1 forms a spout protruding from the peripheral edge when the sheet-like members are stacked and welded, and tears a predetermined portion of the spout during actual use. Therefore, it is possible to take out a stored matter such as a liquid or a semi-fluid.

  Further, for example, Patent Document 2 discloses a container in which a spout integrally formed with a synthetic resin or the like is attached separately from a sheet-like member so that the contents can be easily poured out. The spout attached separately to such a sheet-like member is also called a spout, and various forms are known. In general, when a spout is welded by superposing two sheet-like members and welding the peripheral edge, the spout is welded by interposing at either peripheral edge. Therefore, the spout has a communication hole through which the contents can be poured out. A weld portion having an elliptical cross section is integrally formed so as to be easily welded by being interposed between the provided stopper and the sheet-like member.

  The container includes a so-called autostereoscopic type having a bottom portion and a bag shape without a bottom portion depending on how the sheet-like members are overlapped or welded. In addition, some spouts are simply configured, for example, a pipe-like member is interposed and welded to a sheet-like member.

JP 2000-177749 A JP-A-10-175650

  The above-mentioned container can pour out the contained items by opening the spout, but for example, if the container is brought down with the spout opened, the container is accommodated in the container. There is a problem that all the contained items flow out through the spout.

  The present invention has been made paying attention to the above-described problems, and an object of the present invention is to provide a container that reduces the outflow amount of the stored matter through the spout even if the container is tilted.

In order to achieve the above-described object, the present invention is a container having a container that accommodates an object by stacking sheet-like members and welding the periphery thereof, and passes the container accommodated in the container. A spout having a communication hole to be welded and a welded portion that is interposed and welded between the stacked sheet-like members, and welded to the sheet-like member. At this time, a plurality of point welds are applied at intervals to a non-contact region formed on the overlapped sheet-like member, and the plurality of point welds are along a direction orthogonal to the axis of the communication hole. A first point welding row formed at three or more points, and a second point welding row formed at two or more points along a direction orthogonal to the axis of the communication hole, and the first point welding row. The position of the point weld in the row and the second Position of the point welding at point welding sequence is characterized in that are offset from one another with respect to the axial direction of the communicating hole.

  According to the container having the above-described structure, when the spout is interposed between the stacked sheet-like members and the welded portion is welded, the housing portion side partially swells with respect to the welding position, and the sheet-like member is A region that is not in close contact (non-contact region) is formed. When a plurality of point welds are applied to this non-adhering region at intervals, the sheet-like member between the point welds expands when the stored object is stored in the storage part and the internal pressure is high, and the stored object flows out. A pressing force action line that recovers the tensile force due to the lowering of the internal pressure and approaches each other (this pressing force action line is also a passage line because it is a part through which the contents pass) is formed.

  For this reason, when the container falls down with the spout open, the internal pressure is high when the content of the material accommodated in the accommodating part is large, so the flow line formed between the point welds The acting pressing force is increased, and the contents pass through the flow path line and flow out of the spout. And if the internal pressure of a accommodating part falls as the things to flow out, since the tensile force of sheet-like members will recover along a flow path line, it will try to block the flow path. That is, as the internal pressure of the storage portion decreases with the outflow of the stored item, the outflow of the stored item gradually decreases or is prevented, so that the container collapses with the spout open. Even if this inconvenience occurs, it is possible to prevent the entire contents from flowing out from the spout and prevent the contents from being wasted.

  According to the present invention, it is possible to obtain a container that reduces the outflow amount of the stored item through the spout even if the spout is collapsed in an open state.

The front view which showed 1st Embodiment of the container which concerns on this invention. It is a figure which expands and shows the principal part of FIG. 1, and is a figure which shows the state before performing point welding. The figure which expands and shows the principal part of FIG. The figure which shows 2nd Embodiment of the container which concerns on this invention, and expands and shows the principal part. The figure which shows the modification of the container shown in FIG. The figure which shows the modification of the container shown in FIG. The figure which shows 3rd Embodiment of the container which concerns on this invention, and expands and shows the principal part. The figure which shows 4th Embodiment of the container which concerns on this invention, and expands and shows the principal part. The figure which shows the modification of the container shown in FIG.

Hereinafter, embodiments of a container according to the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing a first embodiment of a container according to the present invention, FIG. 2 is an enlarged view showing a main part of FIG. 1, and shows a state before applying point welding, FIG. 3 is an enlarged view of the main part of FIG.

  The container 1 which concerns on this embodiment is comprised by the form as shown in FIG. 1, for example. In the container 1, the sheet-like members 3a and 3b are overlapped, and the periphery shown by the oblique lines is thermally welded by a heat bar or the like, and the spout 10 is interposed at a predetermined position of the overlapped sheet-like members 3a and 3b. The In this case, the spout 10 is integrally formed of plastic or the like, and is thermally welded to the stacked sheet-like members 3a and 3b.

  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 container 1 having a container 4 in which a container such as a liquid or a semi-fluid is stored. . In this case, the container 1 may be configured as a 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. Also good. 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 according to the present embodiment is integrally formed of, for example, a synthetic resin such as polyethylene or polypropylene, and includes a communication hole 11a through which the contents can be poured out. 11 and a welded portion 12 that is welded by being interposed between the sheet-like members 3a and 3b. In this case, the welded portion 12 has an elliptical cross section (including a cross-section boat shape, including a circular shape) so as to be easily welded to the inner surfaces of the stacked sheet-like members 3a and 3b. The communication hole 11 a is formed so as to penetrate the inside of the welded portion 12 from the plug 11 and open to the accommodating portion 4. Thereby, the things accommodated in the accommodating part 4 are poured out from the spigot 11 via the communicating hole 11a.

  A plug body 15 that closes the housing portion 4 is attached to the plug 11. In this case, as shown in the drawing, the plug body 15 is configured in a cap shape, and is screwed into a male screw portion (not shown) formed on the outer periphery of the plug 11 so that the housing portion 4 is It is supposed to block. For this reason, at the time of first use, after the plug body 15 is separated from the plug 11 and the contents are poured out with the opening exposed, the plug body 15 is screwed into the plug 11 to accommodate the plug. It is possible to close the object again.

  When the spout 10 as described above is interposed and welded to the sheet-like members 3a and 3b, a non-contact region R is formed below (the accommodating portion 4) as shown in FIG. This non-adhesion region R is caused by the thickness of the welded portion 12 of the spout (thickness in the direction orthogonal to the stacked sheet-like member), and before the accommodation is filled in the accommodation portion 4. In the stage, the sheet-like members 3a and 3b other than the non-contact region R are in a close contact state (contact state). In the drawing, the non-contact region R is shown in a substantially elliptical shape for easy understanding, but strictly speaking, the boundary portion (boundary line) between the non-contact region and the contact region has an indefinite shape. The boundary line between the non-contact region and the contact region is a complex line formed by combining straight lines and curves.

  A plurality of point welds 20 are applied to the non-contact region R described above at intervals. In the present embodiment, three point welds 20 are formed on the lower side of the welded portion 12 in the non-contact region R. Specifically, as shown in FIG. 3, the point welding 20 is formed at three points along a direction (indicated by Y) perpendicular to the axis (indicated by X) of the communication hole 11a. Thus, the point welding row 20A is formed along the Y direction. In addition, it is preferable to form the point welding 20 which comprises such a point welding row | line | column 20A at least on the axis | shaft X of the communicating hole 11a, and to form at equal intervals on the both sides. For example, in the configuration shown in the figure, each point weld 20 is configured in a circle, the diameter (width) is set to 2 mm, and the distance between the point welds is set to about 40 mm. Further, the point welding row 20A may not be orthogonal to the X axis, and may have a slight angle or be along a curved line.

  By applying such a plurality of point welds 20, the overlapped sheet-like members 3a and 3b are spot-welded to each other at that position, so that the surrounding regions are in a direction in which they are in close contact with each other. As a result, the non-contact region R shown in FIG. 2 changes as shown in a region R1 as shown in FIG.

  In this case, the edge defining the changed non-contact region R1 is expanded by the internal pressure of the accommodating portion between the respective point welds 20, and the tensile force recovers and approaches as the internal pressure decreases. A pressing force action line (referred to as a flow path line) P is formed. In other words, the contents accommodated in the accommodating portion 4 can pass through the flow path line P and flow into the communication hole 11a.

  In such a configuration, when a container such as a liquid is stored in the container 4 and the container 1 falls down with the spout (plug 11) open, the container stored in the container 4 Since the internal pressure is high when the internal volume of the gas is large, the pressing force acting on the flow path line P between the point welds 20 also increases, and the contents pass through the flow path line P and the communication hole 11a (plug) 11). After that, when the internal pressure of the accommodating portion 4 decreases as the contents flow out, the tensile force between the sheet-like members in the flow path line P between the point welds 20 gradually recovers, and both approach and flow Attempt to close line P. When the tensile force that finally acts on the flow path line P and the internal pressure in the housing portion become substantially equal, the stored material becomes difficult to flow through the flow line P, and the outflow of the stored material is reduced or prevented. Become so.

  Therefore, even if inconvenience such as the container 1 falls down with the spout (plug 11) opened, it is possible to prevent the entire contents from flowing out from the spout and to prevent the waste from being wasted. Is done.

  In the above-described configuration, the size of the point weld 20, the distance between the point welds (width of the flow path line P), the magnitude of the tensile force due to the material of the sheet-like members 3 a and 3 b, the type of accommodation, the accommodation The amount of outflow can be adjusted by the capacity of the portion 4 or the like, but the point weld 20 is formed at least at three or more locations on the point weld row 20A so as to minimize the outflow of the contents. It is preferable to keep it.

  Further, as described above, the point weld row 20A may be linear or curved, but the flow path line P finally formed by each point weld 20 However, it is preferable that the arrangement is symmetrical with respect to the axis X of the communication hole 11a.

  Furthermore, when the above-described point welding row is formed, the formation position is preferably formed on the welding portion side of the non-contact region R. Specifically, in FIG. 2, when the distance in the axis X direction of the non-contact region R is LX, the point weld row 20A may be formed within a range of (1/3 LX) from the weld portion 12. preferable.

  FIG. 4 shows a second embodiment of the container according to the present invention, and is an enlarged view of the main part.

  In the present embodiment, the plurality of point welds 20 formed in the non-contact region are formed by three first point weld rows 20A formed along the direction orthogonal to the axis X of the communication hole 11a, and the shaft of the communication hole 11a. And a second point weld row 20B formed at two points along the direction orthogonal to X.

  In addition to the first point weld row 20A having the same configuration as that of the first embodiment described above, the second point weld row 20B is further formed, so that the outflow amount of the stored items can be further reduced. . In this case, the second point weld row 20B is preferably formed in parallel with the first point weld row 20A, and the position of the point weld in the first point weld row 20A and the second point weld row 20B. The point welding positions are preferably formed so as to deviate from each other with respect to the axial direction of the communication hole 11a. That is, when viewed in the X-axis direction, it is preferable that the point welding position of the first point welding row 20A and the point welding position of the second point welding row 20B be shifted. The distance between the first point weld row 20A and the second point weld row 20B (the separation distance in the X-axis direction) is set to about 10 mm.

  By performing the point welding as described above, a predetermined-width channel line P1 having a function similar to that of the first embodiment is provided between the first point welding row 20A and the second point welding row 20B. Is formed. In this case, although the flow path line P1 is in a state of being in close contact over the shaded area shown in the figure, it becomes a portion through which the contents are expanded by the application of internal pressure. As described above, by shifting the position of the point welding of the first point welding row 20A and the second point welding row 20B, the flow path line P1 has a predetermined width and is in a uniform state (equally It can be easily formed in a substantially close contact state.

  Moreover, although the number of the point welding 20 in the above-mentioned 2nd point welding row | line 20B is made into two places, when the capacity | capacitance of the accommodating part 4 is large, as shown in FIG. 5, for example, as shown in FIG. You may form four places so that it may shift | deviate from the point welding position of 20A.

  As described above, the positions where the plurality of point welds 20 are formed can be appropriately changed, and by forming the first point weld row 20A and the second point weld row 20B, between them, Can form a flow path line P1 having a predetermined width.

  In such a configuration, when a container such as a liquid is stored in the container 4 and the container 1 falls down with the spout (plug 11) open, the container stored in the container 4 Even if the internal volume is high and the internal pressure is high, the flow path line P1 has a predetermined width and is in a substantially intimate contact state, so that the contained material is prevented from passing immediately. In this case, when a certain amount of time elapses after falling down, the flow path line P1 is pushed and expanded by the internal pressure of the contained material, so that it gradually passes through the flow path line P1 and flows out from the communication hole 11a (plug 11). become. After that, when the internal pressure of the accommodating portion 4 decreases as the contents flow out, the tensile force between the sheet-like members in the flow path line P1 gradually recovers, and both approach and try to close the flow path line P1. To do. When the tensile force that finally acts on the flow path line P1 and the internal pressure in the housing portion become substantially equal, the stored material becomes difficult to flow through the flow path line P1, and the outflow of the stored material is reduced or prevented. Become so.

  For this reason, in this embodiment, even if there is a problem such as the container 1 falling down with the spout (plug 11) opened, the container does not immediately flow out at the beginning of the collapse. By returning to the original state, it becomes possible to prevent the outflow of the contents. Moreover, even if the container remains in a collapsed state, it is possible to prevent the entire contents from flowing out from the spout and prevent the contents from being wasted.

  In addition, about the mounting position of the spout 10 of the structure mentioned above, it can change suitably. For example, as shown in FIG. 6, it is possible to obtain the same function and effect even if the capacity of the container 1 is increased and the spout 10 is installed at the corner 5a of the sheet-like members 3a and 3b. It becomes.

  FIG. 7 shows a third embodiment of the container according to the present invention, and is an enlarged view of the main part.

  In the present embodiment, the spout 10 is a simple pipe configured. That is, when the protrusions 7 are formed by expanding the corners of the sheet-like members 3a and 3b, and the pipe-like spouts 10 are welded to these portions, the above-described portions are contained in the storage portion 4. A non-contact region similar to that in the embodiment is formed. And in this non-contact area | region, by forming the 1st point welding row | line 20A and the 2nd point welding row | line | column 20B similar to above-mentioned 2nd Embodiment, the flow path line P1 of a shape as shown in a figure is shown. It becomes possible to form.

  In such a configuration, since the configuration of the spout can be simplified, the container can be manufactured at a low cost.

  FIG. 8 shows a fourth embodiment of the container according to the present invention, and is an enlarged view of the main part.

  For the plurality of point welds described above, the structure of the container and the sheet-like shape can be used as long as the non-contact region is formed in the container 4 when the spout 10 is attached to the sheet-like member. There is no limitation on the position where the member is welded. For this reason, for example, it is possible to apply also to the container which welded the suitable place of the sheet-like member and formed the self-sealing type check valve.

  In the sheet-like members 3a and 3b of the present embodiment, a welded portion (hereinafter referred to as a first welded portion and a welded portion) welded in a pair from both sides of the welded portion 12 of the spout 10 to the lower side of the communication hole 11a. 30) and 30 are formed. The first welded portions 30 and 30 are formed by welding the sheet-like members 3a and 3b so as to extend linearly from both sides of the welded portion 12, and are coaxial with the communication hole 11a. Above, it welds so that the small hole 30a used as a diameter smaller than the communicating hole 11a may be formed.

  Further, the sheet-like members 3a and 3b are formed in the space portion 32 formed by the first welded portions 30 and 30 so that a flow passage 37 gradually decreasing in diameter from the communication hole 11a toward the small hole 30a is generated. Are welded so as to form a pair. In this case, the second welded portions 35, 35 are formed with a flow path 37 that gradually decreases in diameter toward the small hole 30a, and the flow path 37 finally protrudes from the small hole 30a 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 35, 35 are formed in a state of being separated from the first welded portions 30, 30 by a predetermined distance on the lower side of the communication hole 11a, and move downward. The two are welded so as to have a symmetrical shape so as to approach each other. Thus, a weight-shaped flow path, specifically, a substantially conical flow path 37 having a circular cross section is formed below the communication hole 11a so as to continue from the communication hole 11a. And the top part 37a of the flow path 37 formed in the weight shape in this way protrudes from the small hole 30a to the accommodating part side, and the front-end | tip is in the closed state. In addition, by opening the plug body 15, the flow path 37 is expanded in the contact area around the plug body 15, and the contents can flow into the flow path 37.

  And since the non-contact | adherence area | region is formed in the circumference | surroundings of the said top part 37a when performing the above-mentioned welding process, the same several point welding 20 as embodiment mentioned above is given using this part. Is possible. In this case, two point welds 20 are formed on the upper side (first point weld row 20A ′) and two points on the lower side (second point weld row 20B ′), and the flow path line P1 is formed between the two points. ′ Is formed.

  According to the container 1 having the structure described above, the first welded portions 30, 30 are accommodated when a container such as a liquid is accommodated in the accommodating portion 4 and the plug 15 is attached to the spigot 11. And the surrounding area (shaded area indicated by S) of the protruding portion of the flow path 37 formed by the second welded portions 35, 35 through the small holes 30a has an increased internal pressure due to the accommodation of the contents. Since the sheet-like members 3a and 3b are in close contact with each other, a self-sealing check valve is configured. For this reason, the accommodated item accommodated in the accommodating part 4 is prevented from moving to the communication hole 11a of the spout 10 (the accommodated item does not flow into the space 32), and the accommodated item contacts the spout 10. There is nothing.

  When the plug 15 is opened from the plug 11, pressure acts on the peripheral region S of the flow path 37 in a state protruding from the small hole 30 a, and the closely attached sheet-like member is expanded. For this reason, the contents can be moved to the surrounding area S of the channel 37 in the protruding state, and the contents pass through the channel 37 between the second welded portions 35 and 35 through the small holes 30a as they are. Thus, it is possible to move to the communication hole 11a. That is, the accommodated item accommodated in the accommodating part 4 can be poured out through the flow path 37 formed by the second welded part by opening the stopper 15.

  Further, even if the container 1 is tilted with the plug 15 opened, the flow path line P1 ′ formed by the point welding 20 described above is in a state of being in close contact with a predetermined width. As in the above-described embodiment, it is immediately prevented that the contents pass through.

  Therefore, in the present embodiment, the contained item in the state accommodated in the accommodating part 4 does not come into contact with the spout 10 by the self-sealing check valve. Therefore, the spout 10 is formed of a material having a high barrier property. Even if there is a problem such as the container 1 falling down with the spout 10 opened, the container 1 does not immediately flow out, and the container 1 is returned to its original state. This makes it possible to prevent the outflow of the contents. Moreover, even if the container 1 is in a collapsed state, it is possible to prevent all the stored items from flowing out from the spout 10 and prevent the stored items from being wasted.

  In this configuration, if the amount of accommodation is increased, for example, as shown in FIG. 9, the point weld 20 of the first point weld row 20A ′ and the point weld 20 of the second point weld row 20B ′. These positions may be shifted from each other. Further, as shown in FIGS. 5 and 6, the number of point welds 20 in the second point weld row 20B ′ may be increased in a state shifted from each other.

  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, the number and formation positions of the point welds 20 associated therewith, the mutual distance, and the like can be variously modified. In particular, the plurality of point welds 20 formed may be formed in a non-contact region when the spout 10 is attached, or may be formed in the contact region together. Further, the maximum width of each point welding 20 is preferably set within 2 mm as in the above-described embodiment, but may be about 3 to 5 mm, and the distance between each point welding. If it exists in the range of 10 mm-40 mm, it will become possible to suppress effectively the outflow amount when a container falls down.

  Furthermore, the configuration of the spout 10 can be modified as appropriate. For example, the plug body 15 can be appropriately modified, for example, configured as a pull type.

DESCRIPTION OF SYMBOLS 1 Container 3a, 3b Sheet-like member 4 Container 10 Outlet 11a Communication hole 12 Welding part 15 Plug body 20 Point welding

Claims (3)

In a container provided with a storage part for storing a storage object by stacking sheet-like members and welding the periphery,
A spout having a communication hole through which the contents accommodated in the accommodating part pass, and a welding part interposed and welded between the stacked sheet-like members;
When the welded portion of the spout is welded to the sheet-like member, a plurality of point welds are applied at intervals to the non-contact region formed in the overlapped sheet-like member ,
The plurality of point welds are formed at two or more points along the first point weld row formed at three or more points along a direction perpendicular to the axis of the communication hole and at a direction perpendicular to the axis of the communication hole. A second point weld row,
The container in which the position of point welding in the first point welding row and the position of point welding in the second point welding row are shifted from each other with respect to the axial direction of the communication hole . In a container provided with a storage part for storing a storage object by stacking sheet-like members and welding the periphery,
A spout having a communication hole through which the contents accommodated in the accommodating part pass, and a welding part interposed and welded between the stacked sheet-like members;
The first welded portion is formed by welding the sheet-like members in pairs so that a small hole having a smaller diameter than the communication hole is formed coaxially with the communication hole, and the first welded portion. And a second welded portion in which the sheet-like members are welded in pairs so that a flow path that gradually decreases in diameter from the communication hole toward the small hole is formed in the space portion. ,
When the first welded portion and the second welded portion are formed on the sheet-like member, a plurality of points are spaced from each other in the non-contact region protruding from the small hole of the overlapped sheet-like member toward the accommodating portion. A container characterized by being welded. The spout has a stopper provided with a communication hole through which the contents can be poured out, and the welded portion is interposed between the stacked sheet-like members, and the cross section is formed in an elliptical shape. The container according to claim 1 or 2, characterized by the above-mentioned.

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