JP4020892B2 - Container with spout and spout - Google Patents

Description

  The present invention relates to a spout-equipped housing in which, for example, a spout for inserting / removing an object is attached to an opening of a synthetic resin-made housing, and a spout.

  2. Description of the Related Art Conventionally, there is known a spout-equipped container in which a spout is attached to a container formed of a relatively flexible material such as a synthetic resin sheet in order to take out the contents contained therein. This spout is usually integrally formed with a synthetic resin or the like, and is disposed between the above-described synthetic resin sheets and is sandwiched by heat welding. Such a spout-equipped container is used in various fields, and various configurations of spouts have been developed accordingly.

  For example, as a usage mode of a container with a spout, there is one in which a sucking needle is inserted into a mouth part of a spout to pour out a stored material and supply this to a necessary place. In this case, an elastic body (rubber) into which the needle is inserted is sealed in the mouth portion of the spout so as to seal the contents and to be used a plurality of times.

  By the way, in such a configuration, the elastic body must have a considerably strong pressing force toward the central region where the needle is inserted. That is, if this pressing force is weak, there will be a gap between the inserted needle and the elastic body, or after the needle has been pulled out, the trace of the needle will remain and a passage will be created. This is because things are likely to leak out.

In order to solve such a problem, Patent Document 1 discloses a division in which a housing portion for housing an elastic body is formed in a welding portion to which a synthetic resin sheet is welded, and the welding portion can be opened and closed via a hinge. The spout which provides a pressing force to an elastic body by providing a part and closing a division | segmentation part in the state which accommodated the elastic body in the said accommodating part is disclosed.
JP 2003-104402 A

  According to the above-described known technique, a spout having a simple configuration and imparting a pressing force toward the center to the elastic body, and a spout-equipped container having such a spout attached thereto can be obtained.

  However, in the above-described known technology, the main body to which the synthetic resin sheet is welded is formed with a mouth portion (plug portion) that protrudes upward, so that when viewed as the entire container, It will increase in size. For example, such a container is installed in a predetermined rigid case, this case is attached to a dispensing needle portion provided in an external device, and the dispensing needle is inserted into the mouth portion to contain the container. In such a configuration, it is necessary to form a holding portion for holding the mouth portion in the case, so that a dead space is generated by the amount of protrusion of the mouth portion, and the amount of stored items is reduced. There is a problem that it ends up. Further, since the projecting mouth portion exists, the case-side mounting structure becomes complicated, and accordingly, there is a problem that the mounting position is difficult to be flexibly adapted according to the request of the external device.

  In the spout as described above, it is considered preferable from the viewpoint of productivity that the operation of assembling the elastic body into the main body and the operation of welding the synthetic resin sheet can be performed more easily.

  The present invention has been made based on the above-described problem, and in a spout-equipped container enclosing an elastic body, it is possible to increase the capacity of the accommodated object and to accommodate the spout. It aims at providing the container with a spout which can attain simplification of the attachment structure in the case where is installed. Another object of the present invention is to provide a spout in which the elastic body can be easily assembled and the synthetic resin sheet can be easily welded in the above-described spouted container.

  In order to solve the above-described problem, the container with spout according to claim 1 is formed by forming a container with a plurality of sheet materials, and the spout is welded between the plurality of sheet materials. The main body has a pair of welding surfaces so that the sheet material is welded. The main body has a substantially flat exposed surface, and opens to the welding surface, and is elastic while giving a predetermined pressing force. A housing part for housing a body and a thin-film-like sealing wall formed on the exposed surface and sealing the housing part are integrally formed.

  In the container with a spout configured as described above, the upper surface side (exposed surface side) of the spout is formed to be substantially flat, and a protruding portion such as a mouth is not formed. When the container with spout is installed in the case, dead space is not generated in the case by the amount of protrusion of the mouth. That is, it is possible to configure the container up to the height position of the exposed surface of the spout and prevent the dead space from being generated in the case. There is no need to provide a mounting portion for holding and guiding the protruding mouth portion in the case, and the configuration of the mounting portion in the case is simplified. Therefore, according to the request | requirement of the external apparatus with which the said case is mounted | worn, the position change of the mounting part of the case with a spout can be easily performed, and it becomes possible to respond flexibly. The above-mentioned “substantially flat” of the exposed surface includes those that are formed in a strictly horizontal state, and other than that, for example, there are some unevenness in the portion where the sealing wall is formed, for example. Such a configuration may be adopted.

  In the above-described configuration, the contents in the container are poured by inserting and sucking a dispensing needle into the thin-walled sealing wall formed on the exposed surface side so as to penetrate the elastic body. It comes out.

  Moreover, in the invention which concerns on Claim 2, the inner side exposed surface exposed to the internal space of the said container is formed in the said main body by the same structure as the said exposed surface, A thin film-like sealing wall for sealing the housing portion is integrally formed.

  In such a configuration, since the sealing wall is also formed on the inner exposed surface side, it is possible to prevent the contents from coming into contact with the elastic body.

  Moreover, in order to solve the above-described problem, a spout-equipped container according to claim 3 is a structure in which a container is formed by a plurality of sheet materials, and the spout is welded between the plurality of sheet materials. Has a pair of welding surfaces so that the sheet material is welded, and has a main body integrated by two parts, and the main body integrates the two parts with a substantially flat exposed surface. A housing portion that accommodates an elastic body while applying a predetermined pressing force, and a joining means that is formed on each of the two components and integrates the components, and is formed on the exposed surface, and seals the housing portion. And a thin film-like sealing wall that stops.

  Thus, the main body of the spout may be one in which the two parts to be divided are integrated, and even in such a configuration, as in the invention according to claim 1, the maximum amount of accommodation is ensured. And the configuration of the mounting portion in the case is simplified.

  Even in such a configuration, as in the invention according to claim 4, the main body is formed with an inner exposed surface exposed to the internal space of the container with the same configuration as the exposed surface, and By forming a thin-film-like sealing wall for sealing the housing portion on the inner exposed surface, it is possible to prevent the housing from coming into contact with the elastic body.

  Moreover, in order to solve the above-described problem, the spout according to claim 5 is welded to a container composed of a plurality of sheet materials, and the spout is poured out of the contents in the container. A main body having a pair of welding surfaces so that the sheet material is welded, and the main body has a substantially flat exposed surface and an opening on the welding surface, and an elastic body while applying a predetermined pressing force; A thin film-like sealing wall that seals the housing portion, and a pin that holds the main body when the plurality of sheet materials are welded to the exposed surface. The hole is integrally formed.

  According to the spout having the above-described configuration, when the sheet material is welded, there is no portion protruding upward from the exposed surface, so that it is possible to secure the maximum amount of accommodation without considering the mouth portion. become. In addition, the elastic body is held in a state where a predetermined pressing force is applied simply by being pushed into the housing portion from the opening portion of the welding surface of the main body, and the main body that houses the elastic body in this way By simply inserting the hole formed in the exposed surface into the jig, the state can be stably maintained, and the sheet material can be easily welded to the welding surface.

  The above-mentioned “substantially flat” of the exposed surface includes those formed in a strictly horizontal state. In addition, for example, some unevenness (sheet) on the portion where the sealing wall is formed. It may be configured such that there are irregularities to the extent that the main body cannot be stably chucked when welding the material).

  In addition, the hole formed in the exposed surface of the spout is provided with a pin on the case side when the spouted container is installed in the case, and the hole of the spout is inserted into this pin. Thus, it is possible to use the spout-equipped container for installation in a stable state without being moved.

  In the invention according to claim 6, the main body is formed with an inner exposed surface that is exposed to the internal space of the housing body with the same configuration as the exposed surface, and the housing portion includes the pair of housings. It is characterized by opening to each of the welding surfaces.

  In the spout having such a configuration, the accommodating portion is opened on each of the exposed surfaces formed on both sides of the main body, so that the elastic body can be easily sealed.

  The invention according to claim 7 is characterized in that a thin film-like sealing wall for sealing the housing portion is integrally formed on the inner exposed surface.

  In the spout having such a configuration, when the sheet material is welded to the pair of welding surfaces and the container is accommodated therein, the container contacts the elastic body by the sealing wall formed on the inner exposed surface side. Can be prevented.

  In the invention according to claim 8, the inner exposed surface is integrally formed with a hole portion to which a pin for holding the main body is engaged when the plurality of sheet materials are welded. .

  In the spout having such a configuration, since the main body has a symmetrical shape, the elastic body can be easily sealed and holes are formed on both exposed surfaces of the spout. It is possible to easily perform the loading operation (holding operation) without considering the directionality.

  Moreover, in order to solve the above-described problem, the spout according to claim 9 is welded to a container composed of a plurality of sheet materials, and the spout is poured out of the contents in the container. The sheet material has a pair of welding surfaces so that the sheet material is welded, and has a main body integrated by two parts, and the main body has a substantially flat exposed surface and the two parts when integrated. A holding portion capable of holding an elastic body while applying a predetermined pressing force to the two parts, and a joining means formed on each of the two parts, for integrating the parts, and sealing the holding part on the exposed surface. A thin film-shaped sealing wall to be stopped and a hole portion to which a pin for holding the main body is engaged when the plurality of sheet materials are welded are formed.

  Thus, the main body of the spout may be an integral part of the two parts to be divided, and in such a configuration as well, as in the invention according to claim 5, the maximum amount of accommodation is ensured. However, by simply inserting the hole into the jig, the state is stably maintained, and the sheet material can be easily welded to the welding surface. Further, the elastic body is held in a state where a predetermined pressing force is applied when the two parts are integrated by the joining means.

  Also in such a configuration, the hole formed in the exposed surface of the spout described above is provided with a pin on the case side when the spouted container is installed in the case, By inserting the spout hole, the spout-equipped container can be used in a stable state without being moved.

  Moreover, in the invention which concerns on Claim 10, the said main body is provided with the inner side exposed surface exposed to the internal space of the said container with the same structure as the said exposed surface, and the said accommodating part is provided in the said inner side exposed surface. A thin-film-like sealing wall for sealing is formed.

  In the spout having such a configuration, when the sheet material is welded to the pair of welding surfaces and the container is accommodated therein, the container contacts the elastic body by the sealing wall formed on the inner exposed surface side. Can be prevented.

  According to an eleventh aspect of the present invention, the inner exposed surface is integrally formed with a hole portion to which a pin for holding the main body is engaged when the plurality of sheet materials are welded. .

  In the spout having such a configuration, since the main body is symmetrical and holes are formed on both exposed surfaces, insertion work (holding work) with respect to the jig is also performed without considering the directionality. It can be easily performed.

  According to the container with a spout of the present invention, it is possible to increase the amount of accommodation of the container and to simplify the configuration of the mounting portion of the case to which such a container with the spout is attached. It becomes.

  In addition, according to the spout of the present invention, the work of assembling the elastic body can be easily performed, and the work of welding the synthetic resin sheet can be easily performed.

Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.
FIGS. 1 to 4 are views showing a spout-equipped container and a first embodiment of the spout according to the present invention, and FIG. 1A is a top view showing the configuration of the spout-equipped container, FIG. b) is a side view, FIG. 2 is a perspective view of the spout, FIG. 3 is a central sectional view of the spout, and FIG. 4 is a diagram showing an outline of the welding process of the sheet material to the spout.

  The spout-equipped container 1 according to the present embodiment prepares a plurality of sheet materials 2a, for example, a plurality of flexible synthetic resin sheets that are relatively inexpensive materials, and arranges them facing each other to indicate a region indicated by grid-like diagonal lines. The container 2 is configured by heat welding and a spout 10 sandwiched (heat-welded) between sheet materials at the upper end portion.

  The spout 10 includes a main body 12 having a pair of welding surfaces 11 to which the opposing sheet material 2 a is welded. The main body 12 has a substantially boat-shaped cross section so that the sheet material can be easily welded to the welding surfaces 11. It is formed to have a shape. Each welding surface 11 shown in the figure is constituted by two flat surfaces, but may be constituted by a single curved surface as shown in FIG. 5 of the second embodiment described later.

  As shown in FIG. 2, a housing portion 15 for housing a spherical elastic body 50 (rubber) is formed in the central portion of the main body 12. In this case, the accommodating part 15 is formed by opening (welding the elastic body 50 through the opening part 15a) with respect to the welding surfaces 11 on both sides, and the size thereof is the elasticity to be enclosed. As shown in FIG. 3, the body 50 is formed so as to exert a pressing force toward the central region. Specifically, it is possible to apply a pressing force by forming the width of the opening 15a slightly smaller than the diameter of the enclosed spherical elastic body 50 (about 0.5 to 1 mm). Become. Further, it is preferable that recesses 15b and 15c are formed in the upper and lower opposing positions so that the encapsulated spherical elastic body 50 is stably held in the housing portion 15. A sealing wall which will be described later is formed in the portion.

  In addition, although the above-mentioned opening part 15a should just be opened to any one welding surface 11, it does not have directionality by forming in the welding surface 11 of both sides, and the sealing operation | work of the elastic body 50 is easy to perform. Become.

  A substantially flat exposed surface 17 is formed on the upper surface side of the main body 12. The exposed surface 17 is an area exposed to the outside when the container with spout is finally created, and has the same height as the edge 2b of the sheet material to be welded and protrudes upward. No mouth or the like is formed. A circular thin film sealing wall 18 is integrally formed on the exposed surface 17 so as to seal the accommodating portion 15.

  Further, in the present embodiment, the main body 12 is formed with an inner exposed surface 20 that is exposed to the inner space side of the container 2 with the same configuration as the exposed surface 17 on the side facing the exposed surface 17. The inner exposed surface 20 is also integrally formed with a circular thin film-like sealing wall 21 so as to seal the accommodating portion 15.

  Further, in the above-described exposed surface 17, when the sheet material 2a is welded to the welding surface 11, a hole portion into which a jig 60 configured in a pin shape is inserted so that the welding operation can be performed easily and stably. 24 is formed. The holes 24 of the present embodiment are formed on both sides of the sealing wall 18 and are configured to be stably held when inserted into a pair of jigs 60 as shown in FIG. Has been. That is, the jig 60 is manually inserted into the spout 10 or guided to a welding portion of a welding apparatus (not shown) after the mechanical insertion process, and the point shown in FIG. As indicated by a chain line, a spout-equipped container is created by thermally welding the sheet material 2 a to each welding surface 11.

  Note that the hole 24 described above is preferably formed on the inner exposed surface 20 with the same configuration. That is, according to the main body 12 having such a configuration, the exposed surface 17 side and the inner exposed surface 20 side have the same configuration, so it is not necessary to consider the directionality, and the welding operation can be easily performed. become. That is, in such a configuration, since the main body 12 has a symmetrical shape, the above-described exposed surface 17 may be inside the container when an actual container with a spout is created.

  The spout 10 configured as described above can be integrally formed as a one-piece by molding a synthetic resin. In this case, the sealing walls 18 and 21 described above may be integrally formed, or the recesses 15b and 15c may be opened in advance and an aluminum sheet or the like may be attached afterwards.

  According to the spout 10 having the above-described configuration, the elastic body 50 is pushed into the accommodating portion 15 through the opening 15a of the welding surface 11 of the main body 12, and the position is stabilized by the recesses 15b and 15c. In this state, a predetermined pressing force toward the center is applied. When the sheet material 2a is welded to the spout 10 containing the elastic body 50, the spout 10 can be stably held by a simple operation of simply inserting the hole 24 into the jig 60. It becomes possible to heat-weld the material 2a to the welding surface 11 easily. That is, since it is not necessary to chuck the spout 10 or the like, the sheet material 2a can be thermally welded to the welding surface 11 easily and stably.

  As shown in FIG. 1, the spouted container to which the sheet material is welded does not have a portion (mouth portion or plug portion) protruding upward from the edge portion 2b of the welded sheet material 2a. When it is attached to a case that does not have any dead space, it is possible to secure the maximum amount of accommodation. Accordingly, the configuration of the portion of the case portion that holds the spout-equipped container is also simplified, so that the position can be easily changed according to the requirements of the external device. For example, in the configuration shown in FIG. 1, the spout 10 can be variously changed according to the request of the external device, such as welding to the side part of the sheet member or welding to the corner part. For the hole 24 described above, a corresponding pin is provided in the case portion in advance, and the hole 24 is inserted into the pin at the time of installation on the case, and is used as means for stabilizing the installation on the case. It becomes possible.

  It should be noted that the container to be accommodated in the container 2 is filled with the end portion of the overlapped sheet material 2a without being welded, and then the unwelded portion is welded to the final product. A spouted container is completed. Alternatively, a spout-equipped container that is the final product is completed by inserting a filling needle into the elastic body 50 and filling the accommodated object with the spout-equipped container that does not contain the contents. In the latter case, the elastic body 50 is applied with a pressing force toward the central region where the needle is inserted depending on the shape of the accommodating portion 15, so that there is a gap between the inserted needle and the elastic body 50. It does not occur, and even after the needle is pulled out, a pressing force acts to block the passage, so that leakage of the contents is prevented.

  Then, when actually taking out the contents from the spouted container, a needle is inserted into the thin film-shaped sealing wall 18 formed on the exposed surface 17 side, and the elastic body 50 and the lower sealing wall 21 are inserted. By penetrating the container, it becomes possible to pour out the contents in the container. In this case, in the above-described configuration, since the sealing wall 21 is also formed on the inner exposed surface 20 side, it is possible to prevent the contents from coming into contact with the elastic body 50.

  In the above-described configuration, the inner exposed surface 20 may not be configured as the same configuration as the exposed surface 17, that is, a flat surface. Moreover, the structure which does not form the sealing wall 21 inside the main body 12 may be sufficient.

  5-7 is a figure which shows 2nd Embodiment of the spout based on this invention, FIG. 5 is a perspective view of a spout, FIG. 6 is a disassembled perspective view of a spout, and FIG. 7 is the center of a spout. It is sectional drawing.

  The spout 110 of the present embodiment is configured such that the main body 112 is composed of two parts 112A and 112B that are divided in the vertical direction, and are integrated by assembling joining means provided on both. . The integrated main body 112 has a welding surface 111 on which the sheet material is welded, as in the above-described embodiment, and has the same height as the edge 2b of the sheet material 2a, as in the configuration shown in FIG. The exposed surface 117 is formed to be substantially flat. In the exposed surface 117, a circular sealing wall 118 is formed as in the above-described embodiment, and holes 124 into which the jig 60 (see FIG. 4) is inserted are formed on both sides thereof. Yes. In addition, the sealing wall 118 of this embodiment forms the recess 118a in the exposed surface 117, is formed in the bottom part, and is comprised so that the position of the sealing wall 118 can be visually recognized easily.

  Both parts 112A and 112B are formed with joint surfaces 113a and 113b so as to be in contact with each other, and the joint surface 113a is formed with a recess 115a hollowed out in a substantially truncated cone shape as shown in FIG. ing. In addition, as shown in FIG. 7, a recess 115b is also formed in the bonding surface 113b at a corresponding position. Then, by integrating both the parts 112A and 112B by a joining means described later, an accommodating portion for accommodating the cylindrical elastic body 150 is formed by the both recesses 115a and 115b. That is, as shown in FIG. 6, the elastic body 150 is disposed in the recess 115b of the lower part 112B, and the upper part 112A is integrated, so that the cylindrical elastic body 150 is sealed inside the main body 112. It becomes a state.

  In this case, the pressing force with respect to the elastic body 150 can be appropriately applied depending on the shape and size of each of the recesses described above and the shape and size of the elastic body 150. In the case of this embodiment, the upper part A pressing force is applied by the inner peripheral wall 116 having a reduced diameter of the recess 115a formed in 112A.

  Further, the joining means described above is integrally formed on the joining surfaces 113a and 113b of both parts 112A and 112B, and as shown in the figure, a pair of leg parts formed on the part 112A side on both sides of the housing part. 160 and a pair of fitting holes 161 which are formed on the part 112B side and into which the both leg portions 160 are fitted. In this case, each leg portion 160 is formed with a flange 160a, and both fitting holes 161 are formed with stepped portions 161a for locking the flange 160a. Both parts are configured to be brought into close contact with each other at the joining surfaces 113a and 113b (the bottom of each fitting hole 161 is opened for molding).

  The configuration of each of the recesses 115a and 115b is specified by the size and shape of the sealed elastic body, and when the two parts 112A and 112B are integrated via the joining means described above, As described above, any structure may be used as long as the elastic body 150 to be accommodated is pressed toward the center.

  In this embodiment, the bottom of the recess 115b may be open, and the sealing wall 121 is formed so that the contents do not contact the elastic body 150, as in the above-described embodiment. May be. Further, as with the part 112B side, the exposed surface 117 having the same configuration and the hole 124 are formed in the same manner as the part 112A side, so that the directionality as the main body is lost, and the sheet material is welded. It becomes possible to carry out easily.

  In the main body 112 configured as described above, the elastic body 150 is disposed in one of the recesses of the two parts 112A and 112B, and the both are integrated by a joining means, whereby a predetermined pressing force is applied to the elastic body 150. After the elastic body 150 is sealed, the spout is stably held by inserting the hole 124 into the jig, and the sheet material is attached to the welding surface 111. A spouted container is created by welding.

  Thus, the main body of the spout may not be a single structure, but may be an integrated two parts to be divided. Even in such a configuration, as in the above-described embodiment, since a mouth portion or the like that protrudes from the exposed surface is not formed, it is possible to secure the maximum amount of accommodation and to attach the case. The configuration of the portion is simplified, the configuration of the portion of the case portion that holds the spouted container is also simplified, and the position can be easily changed according to the requirements of the external device.

  Although the embodiment of the present invention has been described above, the present invention can be variously modified as follows, for example, in addition to the above-described embodiment.

  The storage portion having the above-described configuration may be any configuration as long as it presses the sealed elastic body toward the center direction in which the needle is inserted. Can be appropriately modified. Also, the sealed elastic body can be appropriately modified. In addition, the number of holes used to hold the spout and the formation position can be variously modified when the sheet material is welded. In addition, the exposed surfaces 17 and 117 formed on the spout may have some unevenness as long as the mouth portion protruding upward (the mouth portion to be chucked) is not formed. The shape of the exposed surface can be modified as appropriate.

  Further, when the main body is constituted by two parts that can be divided as in the second embodiment described above, various modifications can be made to the specific dividing direction and the structure of the joining means for integrating the two.

It is a figure which shows 1st Embodiment of the container with a spout, (a) is a top view which shows the structure of a container with a spout, (b) is a side view. The perspective view of the spout in a container with a spout. The center sectional drawing of a spout. The figure which shows the outline of the welding process of the sheet | seat material with respect to a spout. The perspective view which shows 2nd Embodiment of a spout. The disassembled perspective view of a spout. The center sectional drawing of a spout.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container with spout 2a Sheet material 10,110 Spout 11,111 Weld surface 12,112 Main body 17,117 Exposed surface 24,124 Hole 50,150 Elastic body 60 Jig

Claims (11)

In a storage body with a spout, in which a storage body is formed by a plurality of sheet materials, and a spout is welded between the plurality of sheet materials,
The spout has a main body having a pair of welding surfaces so that the sheet material is welded,
The main body has a substantially flat exposed surface, a housing portion that opens to the welding surface and accommodates an elastic body while applying a predetermined pressing force, and a thin film that is formed on the exposed surface and seals the housing portion. A spout-equipped container, in which a cylindrical sealing wall is integrally formed. The main body has the same configuration as the exposed surface, and an inner exposed surface that is exposed to the internal space of the container is formed.
The container with a spout according to claim 1, wherein a thin-film-like sealing wall for sealing the housing portion is integrally formed on the inner exposed surface. In a storage body with a spout, in which a storage body is formed by a plurality of sheet materials, and a spout is welded between the plurality of sheet materials,
The spout includes a pair of welding surfaces so that the sheet material is welded, and has a main body integrated by two parts,
The main body is formed in a substantially flat exposed surface, a housing portion that houses an elastic body while applying a predetermined pressing force when the two parts are integrated, and the two parts are integrated with each other. A spout-equipped container having a joining means and a thin-film-like sealing wall formed on the exposed surface and sealing the housing part. The main body has the same configuration as the exposed surface, and an inner exposed surface that is exposed to the internal space of the container is formed.
The container with a spout according to claim 3, wherein a thin film-like sealing wall for sealing the housing portion is formed on the inner exposed surface. In a spout that is welded to a container composed of a plurality of sheet materials and pours out the contents in the container,
The spout has a main body having a pair of welding surfaces so that the sheet material is welded,
The main body has a substantially flat exposed surface and an accommodating portion that opens to the welding surface and can accommodate an elastic body while applying a predetermined pressing force,
The exposed surface is integrally formed with a thin film-like sealing wall that seals the accommodating portion and a hole portion that engages with a pin that holds the main body when the plurality of sheet materials are welded. Spout characterized by. The main body has the same configuration as the exposed surface, and an inner exposed surface that is exposed to the internal space of the container is formed.
The spout according to claim 5, wherein the housing portion is open to each of the pair of welding surfaces.   The spout according to claim 6, wherein a thin film-like sealing wall for sealing the housing portion is integrally formed on the inner exposed surface.   8. The spout according to claim 7, wherein a hole for engaging with a pin for holding the main body when the plurality of sheet materials are welded is integrally formed on the inner exposed surface. In a spout that is welded to a container composed of a plurality of sheet materials and pours out the contents in the container,
The spout includes a pair of welding surfaces so that the sheet material is welded, and has a main body integrated by two parts,
The main body is formed in a substantially flat exposed surface, a housing part that can accommodate an elastic body while applying a predetermined pressing force when the two parts are integrated, and the two parts, and the parts are integrated. And joining means for
The exposed surface is formed with a thin film-like sealing wall that seals the accommodating portion, and a hole portion that engages with a pin for holding the main body when welding the plurality of sheet materials. Spout characterized by that. The main body has the same configuration as the exposed surface, and includes an inner exposed surface exposed to the internal space of the container.
The spout according to claim 9, wherein a thin film-like sealing wall that seals the housing portion is formed on the inner exposed surface.   The spout according to claim 10, wherein a hole for engaging with a pin for holding the main body is integrally formed on the inner exposed surface when the plurality of sheet materials are welded.

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