EP1284163A1

EP1284163A1 - Container

Info

Publication number: EP1284163A1
Application number: EP01119607A
Authority: EP
Inventors: Yoichiro Kadoishi; Taneo Miyata
Original assignee: Sharp Chemical Ind Co Ltd
Current assignee: Sharp Chemical Ind Co Ltd
Priority date: 2001-08-17
Filing date: 2001-08-17
Publication date: 2003-02-19
Anticipated expiration: 2021-08-17
Also published as: DE60133103T2; DE60133103D1; EP1284163B1

Abstract

The present invention provides a container for accommodating sealants and the like. As compared with a conventional cartridge, the container after its content is run out can be more easily treated, resulting in largely cutting off the cost required for treating the empty container, and also the cost for producing the container can be lowered. When used, the container is capable of extruding the content at the same workability as a conventional extruding gun by use of the conventional extruding gun and the like.

At one end portion of a pouch 1 which accommodates a fluid with high viscosity such as a sealant in a hermetic state, an extruding outlet 2 including an extruding nozzle 22 is attached. The pouch 1 is perforated at the position where the extruding outlet 2 is attached to the pouch 1. In this state, taking advantage of flexibility of the pouch, the content can be extruded at the same workability as a conventional rigid cartridge by use of a conventional extruding gun. The volume of the container after the content is run out can be reduced to the size of about a several tens of a conventional cartridge.

Description

The present invention relates to a container for accommodating a fluid with high viscosity such as adhesives including various sealants. More specifically, the present invention relates to a container suitable for extruding its content therefrom in a predetermined amount by use of a known extruder such as an extruding gun.
An adhesive such as a sealant including a silicone sealant is generally distributed in a market in a state where it is accommodated in a cartridge 81 constituted by an injection molded body made of resin having a cross-section such as shown in Fig. 8. In an actual use, the adhesive is extruded in a predetermined amount by use of an extruding gun 82 commercially available under a name of a caulking gun having an external view such as shown in Fig. 9(A), and a cross-section of the main portion such as shown in Fig. 9(B).
The cartridge 81 has a structure in which a cylindrical outlet 812 is formed at one end portion of a cylindrical body 811, and a movable bottom 813 which is slidable along an inner surface of the cylindrical body 811 is provided at the other end portion. An opening at an inside of the outlet 812 is sealed with an aluminum foil 814. The aluminum foil 814 is torn away and removed before use. At an outer peripheral surface of the outlet 812, a male thread 812a is formed. A nozzle (not shown) which is a cylindrical body in the shape of cone is screwed into the male thread 812a. Then, the nozzle is cut at a position where a desired opening diameter is obtained, and the cartridge 81 is mounted to the extruding gun.
The extruding gun 82, shown as an example in Fig. 9, is of a hermetically closed type, and is mainly constituted by: a cylinder 821 both ends of which are opened; a cover 822 removably mounted at one end of the cylinder 821 and formed with a small opening 822a; a piston 823 movably provided within the cylinder 821; a trigger system 824 for moving the piston 823; a support member 825 for supporting a rod of the piston 823 and the trigger system 824 and for blocking the other end side of the cylinder 821. The reference numeral 826 denotes a guide fitted so as to be relatively movable with respect to the rod of the piston 823. In practical use, the cover 822 is removed and the cartridge 81 is inserted into the cylinder 821 in such a manner that the outlet 812 thereof is directed to the side of the cover 822. After that, the cover is mounted and the outlet 812 is projected to the outside through the small opening 822a of the cover 822. In this state, the trigger 824 is operated to move the piston 823 toward the cover 822. Thereby, the piston 823 pushes the movable bottom 813, so as to extrude the content such as a sealant from the cartridge 81 through the outlet 812.
As to the extruding gun of a hermetically closed type having a cylindrical cylinder 821 such as shown in Fig. 9, also commercially available is an extruding gun of an open type having a semi-cylindrical extruding cylinder upper half section of which is opened.
The conventional cartridge 81 such as described above has a problem as follows. The volume of the cartridge remains unchanged even after its content is run out, and therefore, high cost is required for treating the empty cartridge based on the container recycling law. In addition, in the conventional cartridge 81, it is required to hermetically attach the movable bottom 813 to the inside of the cylindrical body 811 with the outlet 812 integrally formed. This causes a problem of high production cost is required.
An object of the present invention is to provide a container which, as compared with a conventional cartridge, can be more easily treated when its content is run out, resulting in largely cutting off the cost required for treating the empty container, and which can be produced at remarkably lower cost, and also which is capable of extruding the content such as a sealant at the same workability as a conventional cartridge, when used by use of a conventional extruding gun.
At one end portion of a pouch 1 which accommodates a fluid with high viscosity such as a sealant in a hermetic state, an extruding outlet (may be called spout) 2 including an extruding nozzle 22 is attached. The pouch 1 is perforated at the position where the extruding outlet 2 is attached to the pouch 1. In this state, taking advantage of flexibility of the pouch, the content can be extruded at the same workability as a conventional rigid cartridge by use of a conventional extruding gun. The volume of the container after the content is run out can be reduced to the size of about a several tens of a conventional cartridge.
Fig. 1 is a perspective view of a container of the present invention before mounted to an extruding gun;
Fig. 2 is a cross-sectional view showing the vicinity of an extruding outlet unit 2 according to an embodiment shown in Fig. 1;
Fig 3 is a explanatory structural diagram showing a pouch 1 used in an embodiment of the present invention, where Fig. 3(A) is a front view showing a state where no content is accommodated, and Fig. 3(B) is a cross-sectional view along the line B-B of Fig. 3(A);
Fig. 4 is a cross-sectional view of the main portion showing the state where the container is mounted in an extruding gun according to an embodiment of the present invention;
Fig. 5 is a perspective view showing another exemplary structure of extruding device for extruding the content from the container according to an embodiment of the present invention;
Fig. 6 is a cross-sectional view showing an exemplary structure of a cover 23 which has a function of perforating a pouch and is effective when accompanied with the container according to an embodiment of the present invention;
Fig. 7 is a diagram for illustrating another explanatory structure of an extruding outlet according to the present invention, and is a cross-sectional view of an extruding outlet in which a flange section to be attached to a pouch and an extruding nozzle are integrally formed;
Fig. 8 is a cross-sectional view showing an exemplary structure of a cartridge for accommodating an adhesive such as a sealant in a freely extrudable manner; and
Fig. 9 is a diagram for illustrating a structure of a commercially available extruding gun for extruding a content from the cartridge shown in Fig. 8, where Fig. 8(A) is an external view thereof, and Fig. 8(B) is a cross-sectional view of a main portion thereof.
The present invention provides a container for accommodating a fluid with high viscosity such as an adhesive, and for extruding the fluid in a predetermined amount in each time by use of an extruder, comprising:
a pouch constituted by forming a film-shaped material into bag; and
an extruding outlet attached to an end portion of the pouch;
the extruding outlet including
an extruding outlet base body constituted by a cylindrical section having a male thread at its outer peripheral surface, and
a flange section which is to be attached to the pouch and is formed at one end portion of the cylindrical section; and
an extruding nozzle constituted by a cone-shaped cylindrical body having a female thread for engaging the male thread on an inner peripheral surface of the cylindrical body end section.
The pouch accommodates a content in a hermetically encapsulated state, and when used, the pouch is perforated at a position inside the cylindrical section of the extruding outlet base body after its base body is attached to the pouch.
In the present invention, the container may accompany a cup-shaped cover having a female thread for engaging the male thread of the cylindrical section of the extruding outlet base body. The cover includes a piercing stick which is integrally formed on an inner bottom surface of the cover and is forced into the base body to perforate the pouch after the extruding outlet base body is attached to the pouch.
The container of the present invention may include, instead of the extruding outlet constituted by the outlet extruding base body having the flange section to be attached to the pouch, and the extruding nozzle, an extruding nozzle integrally formed with a flange section which is to be attached to the pouch and is formed at the end section of a cone-shaped cylindrical body.
When the content to fill the container requires gas barrier characteristics, the film-shaped material for constituting the pouch preferably is a laminated film including a gas barrier layer or a water vapor barrier layer constituted by at least one of the layers including an aluminum foil layer, a transparent deposited polyethylene telephthalate resin layer, a transparent deposited polyamide resin layer, a composite prestretched polyamide resin layer, a composite prestretched polypropylene resin layer, and an ethylene-vinyl alcohol copolymer resin layer.
The shape of the pouch used in the present invention is not specifically limited. However, a pouch in the shape of a bottom of a ship formed by attaching two rectangular films to each other at their end portions via the film having the shape of the bottom of ship (see Fig. 3), or a known standing pouch can be used under good handling characteristics and workability.
The present invention attains its objective by accommodating a sealant into, instead of a conventional cartridge in which a movable bottom surface is provided within a rigid cylindrical body, a pouch having flexibility as a whole, and by attaching an extruding outlet to one end portion of the pouch.
A fluid with high viscosity in this invention may be a sealant or an adhesive having a viscosity in the range of about 4000 centipoise (cP) to 1,000,000 cP. For example, a modified silicone base adhesive is known to have a viscosity of 5000 cP. A modified silicone sealant is known to have a viscosity of 300000 cP. In the present invention, other selants or adhesives avairable in the market may be applied to the container of the present invention. Such a fluid with high viscosity is accommodated into a soft container such as a pouch constituted by forming a film-shaped material into the shape of a bag. In more detail, the pouch is filled with the fluid and sealed by heat sealing. An extruding outlet including an extruding nozzle of the same type as that used in a conventional cartridge is attached to an end portion of the pouch, and the pouch is perforated at the position where the extruding outlet is attached. Then, the pouch is deformed by a piston by use of a conventional extruding gun of hermetically closed type. In this manner, the fluid with high viscosity such as a sealant, which is a content filling the container, can be extruded in a predetermined amount in each time at the same workability as a conventional extruding gun. In addition, substantially all the amount of the content can be extruded with no content remaining in the container. The experiment affirmed the above. Since the container of the present invention has a main body which is a soft or flexible pouch, the volume of the empty container after all the amount of the content has been extruded is remarkably small, as compared with the a conventional rigid cartridge. As a result, a cost required for treating the empty container can be largely cut off, and the cost for producing the container also can be largely lowered.
In the present invention, the pouch for accommodating a content such as a sealant is hermetically closed in an unused state. When used, the pouch is perforated at an inside of the extruding outlet to allow the content to be extruded therefrom. The pouch can be perforated by use of any instrument. For example, onto an inner bottom surface of the cover which is engaged with the extruding outlet base body attached to the pouch so as to mount the extruding nozzle thereon, a piercing stick for perforating the pouch when the cover is engaged with the extruding outlet base body is integrally formed. By providing this cover to the extruding outlet base body, in addition to the easiness of the perforation operation, the deterioration of the quality of the content can be prevented when the content is left in the container after use and is kept in the container.
In the present invention, the extruding outlet base body and the extruding nozzle to be forced thereinto such as described above are used. Alternatively, they may be integrally formed into one piece unit, that is, an extruding outlet in which a flange section to be attached to the pouch is integrally formed with the end section of the extruding nozzle made of a cone-shaped cylindrical body. In this case, the pouch may be perforated by use of a long instrument such as a driver.
The film-shaped material for constituting the pouch is preferably has gas barrier characteristics or water vapor barrier characteristics, in the case where the content in the pouch is an adhesive such as one part modified silicone sealant, one part urethane adhesive and one part silicone sealant In this case, the pouch preferably is a laminated film including a gas barrier layer or a water vapor barrier layer constituted by any one of an aluminum foil layer, a transparent deposited polyethylene telephthalate resin layer, a transparent deposited polyamide resin layer, a composite extended polyamide resin layer, a composite prestretched polypropylene resin layer, and an ethylene-vinyl alcohol copolymer resin layer.
In the present invention, the pouch may have any shapes as far as all the amount of the content can be extruded by use of an extruding gun and the like. Especially preferable are a pouch in the shape of the bottom of a ship and a standing pouch, in view of easiness of handling of the container and workability.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is a perspective view showing the state immediately before the container is mounted to an extruding gun according to an embodiment of the present invention. Fig. 2 is a cross-sectional view showing the vicinity of the extruding outlet unit 2 thereof. Fig. 3 is a diagram for illustrating a structure of a pouch 1, where Fig. 3 (A) is a front view showing a state where no content is accommodated, and Fig. 3(B) is a cross-sectional view along the line B-B of Fig. 3(A).
The pouch 1 is a pouch in the shape of the bottom of a ship. As shown in Fig. 3, the pouch 1 has a structure in which an irregular hexagonal-shaped film 11c is provided to one end portions of two substantially rectangular-shaped films 11a, 11b, and the entire circumference of the film 11c is fused to the film 11a or 11b, and the films 11a and 11b are fused to each other at their both side edges. The fused portion is denoted by M in Fig. 3.
Into the pouch 1 having the structure described above, a fluid with high viscosity such as a sealant is accommodated and hermetically encapsulated therein. In this state, the film 11c is substantially flat, and an extruding outlet base body 21, which will be described later, can be easily attached thereto.
When the container is intended to accommodate a content such as a sealant which requires a barrier characteristics against gases, soft films with gas barrier characteristics or water vapor barrier characteristics may be preferably employed as materials for constituting the films 11a, 11b, and 11c. Specific examples thereof include: a laminated film in which an aluminum foil is used as a gas barrier layer and a water vapor barrier layer, and a stretched polyamide resin layer is laminated on one surface, while a polyethylene resin layer with low density or a unstretched polypropylene resin layer is laminated on the other surface thereof; a laminated film in which a transparent deposited polyethylene telephthalate resin layer or a transparent deposited polyamide resin layer formed by depositing ceramics and the like is used as a gas barrier layer, and a stretched polyamide resin is laminated to one surface, while a polyethylene resin layer with low density or an unstretched polypropylene resin layer is laminated to the other surface thereof; a laminated film in which a composite polyamide resin layer is used as a gas barrier layer, and a polyethylene resin layer with low density or an unstretched polypropylene resin layer is accumulated to one surface thereof; a laminated film in which a composite stretched polypropylene resin layer is used as a gas barrier layer and a water vapor barrier layer, and a polyethylene resin layer with low density or an unstretched polypropylene resin layer is laminated to one surface thereof; and a laminated film in which an ethylene-vinyl alcohol copolymer resin layer is used as a gas barrier layer, and a stretched polyamide resin layer is laminated to one surface, while a polyethylene resin layer with low density or an unstretched polypropylene resin layer is laminated to the other surface thereof.
When the container is intended to accommodate a content which does not specifically require barrier characteristics against gases, the following films may be employed for the films 11a, 11b, and 11c: a laminated film in which a polyethylene resin layer with low density or an unstretched polypropylene resin layer is laminated on one surface of a stretched polyamide resin layer; a laminated film in which a polyethylene resin layer with low density or an unstretched polypropylene resin layer is laminated on one surface of a polyethylene telephthalate resin layer; or an laminated film in which a polyethylene resin layer with low density or an unstretched polypropylene resin layer is laminated on one surface of a stretched polypropylene resin layer.
A content such as a sealant is kept in a hermetically encapsulated state within the pouch 1 having a structure such as described above. In this embodiment, an extruding outlet unit 2 constituted by an extruding outlet base body 21 and an extruding nozzle 22 shown in Figs. 1 and 2 is provided for the pouch 1 in which the content is accommodated in a hermetically encapsulated state. The pouch 1 is distributed with the extruding outlet unit 2 into a market. Alternatively, the extruding outlet unit 2 is sold independently from the pouch 1.
The extruding outlet base body 21 and the extruding nozzle 22 are respectively injection molded bodies made of resin. The extruding outlet base body 21 has a shape in which a flange section 21b is formed at one end portion of a cylindrical section 21a. On the surface of the flange section 21b, an adhesive layer 21c for attaching the flange section 21b to the pouch 1 is accumulated. On the outer periphery of the cylindrical section 21a, a male thread 21d is formed.
The extruding nozzle 22 is of the same type as that attached to the cartridge which is conventionally used for accommodating a content of this kind. The extruding nozzle 22 as a whole has a cylindrical body in the shape of cone having an opening with large diameter at its end section. The other top end portion of the cylindrical body is closed in an unused state, and is opened when it is cut at a position which gives a diameter for allowing the content in a predetermined amount to be extruded therefrom. On an inner peripheral surface of the end section of the extruding nozzle 22, a female thread 22a for engaging the male thread 21a is formed.
In use, the extruding outlet base body 21 is attached to a substantially middle position of the film 11c at one end portion of the pouch 1 by attaching the flange section 21b to the pouch 1 via the adhesive layer 21c. After that, the inside of the extruding outlet base body 21 torn and perforated by an appropriate piercing stick and the like. In this state, the female thread 22a of the extruding nozzle 22 is screwed and fixed to the male thread 21d. At the same time, the top end portion of the extruding nozzle 22 is cut at an appropriate position to open it.
Then, a commercially available extruding gun 82 exemplarily shown in Fig. 9 is prepared. The cover 822 of the extruding gun 82 is removed, and then, the container of the present invention which has been prepared as described above is inserted into the cylinder 821. The cover 822 is mounted, and the extruding outlet 2 is projected to the outside through the small opening section 822a. This state is shown in Fig. 4 as a cross-sectional view of a main section. In this state, the trigger 824 is operated to move the piston 823 toward the cover 822, so that the pouch 1 is pressed within the hermetically closed cylinder 821. The fluid with high viscosity such as a sealant within the pouch 1 is extruded through a hole formed at the inner side of the extruding outlet 2, and then is flowed out through the top end opening section of the extruding nozzle 22. Since the pouch 1 is soft and flexible, it is deformed while forming wrinkles as the piston 823 is advanced to extrude the content. Finally, substantially all the amount of the content can be extruded.
After all the amount of the content is run out, the pouch 1 is in a thickness of about several millimeters in its original axial direction. The volume of the empty container is a several tens of a conventional cartridge, thereby largely cutting off the cost required for its treatment.
In the above embodiment, a pouch having a shape of the bottom of a ship is used as the pouch 1. However, the present invention is not limited thereto, and pouches of any shapes may be employed as far as they are soft and flexible and an extruding outlet can be attached to one end portion thereof. For example, pouches in known shapes such as standing pouches, tube-shaped pouches, envelope-shaped pouches, back-attached type pouches, GZ type pouches, irregular triangle-shaped pouches, and the like may be employed.
In the above description, the hermetically closed type extruding gun is used as an instrument for extruding the content from the container of the present invention. Same effect may be obtained when an extruding gun having the following structure perspective view of which is shown in Fig. 5 is used. A known extruding gun including a semi-cylindrical extruding cylinder 41, a piston 42 moving inside the extruding cylinder 41, and a trigger system 43 for moving the piston 42, is provided with an open/close type cover 44 for closing the opened section of the upper half section of the semi-cylindrical extruding cylinder 41. Also, the piston of each of the extruding guns described above may be moved by a screw.
Furthermore, the container of the present invention has a main body which is a pouch with flexibility. The extruding instruments and extruding methods for extruding the content therefrom are not specifically limited, and any instruments and methods other than the extruding gun such as described above may be employed. For example, an instrument having two rolls between which the container is sandwiched to extrude the content therefrom may be employed. Alternatively, the content may be extruded by manually pressing the pouch.
When the extruding outlet unit 2 of the embodiment described above is accompanied by a cover 23 such as shown in Fig. 6, further effect is obtained. The cover 23 has a structure in which, in its cup-shaped inside surface opened at one end, a female thread 23a which engages the male thread 21d of the extruding outlet base body 21 is formed, and a piercing stick 23b with a sharp top end is formed in such a manner as to project from the inner bottom surface beyond the open end. After the extruding outlet base body 21 is attached to the pouch 1, the cover 23 is screwed to the male thread 21d to cover the base body 21. In this manner, the piercing stick 23b tears the pouch 1 to perforate the pouch 1 at the inside of the extruding outlet base body 21. In addition, when the content is left after use and is kept in the container, the cover 23 is mounted to the extruding outlet base body 21 after the extruding nozzle 22 is removed. In this manner, the cover 23 serves as a cover for preventing the quality of the content from deterioration.
In the above embodiment, as the extruding outlet for extruding the content from the pouch, the extruding outlet base body 21 to be attached to the pouch 1, and the extruding nozzle 22 screwed and fixed to the extruding outlet base body 21 are used. Alternatively, it is also possible to use an integral type extruding nozzle 5 such as shown in the cross-sectional view of Fig. 7. In the integral type extruding nozzle 5, a flange section 52 for attachment to the pouch 1 is integrally formed to the end section of a cone-shaped nozzle 51, and an adhesive layer 53 is accumulated to the flange section 52. In this case, in order to perforate the pouch 1 at the inside of the extruding nozzle 5 after the extruding nozzle 5 is attached to the pouch 1, an instrument with long length such as a driver may be used.
As has been described above, according to the present invention, the main body of the container for accommodating the fluid with high viscosity such as a sealant is a pouch constituted by forming a soft and flexible film into the shape of a bag, and the content is accommodated in the container in a hermetically encapsulated state. In practical use, the extruding outlet is attached to one end portion of the pouch to perforate the pouch at the inside of the extruding outlet. Taking advantage of flexibility of the pouch, the content is extruded in a predetermined amount in each time through the nozzle provided to the extruding outlet by use of a conventional extruding instrument such as an extruding gun. As compared with a conventional rigid cartridge for accommodating a content such as a sealant and the like, the container of the present invention can be produced at remarkably lower cost. At the same time, the volume of the container after the content is run out can be remarkably reduced to small, resulting in largely cutting off the cost required for treating the empty container.
Since the pouch is constituted by a film-shaped material which is a laminated film including a gas barrier layer or a water vapor barrier layer, the container may be employed with no problem for accommodating the fluids such as various sealants which require the container to have gas barrier characteristics and water vapor barrier characteristics.

Claims

A container for accommodating a fluid with high viscosity such as an adhesive, and for extruding the fluid in a predetermined amount in each time by use of an extruder, comprising:

a pouch constituted by forming a film-shaped material into bag; and

an extruding outlet attached to an end portion of the pouch;

the extruding outlet comprising:

an extruding outlet base body constituted by a cylindrical section having a male thread at its outer peripheral surface, and
a flange section which is to be attached to the pouch and is formed at one end portion of the cylindrical section; and

an extruding nozzle constituted by a cone-shaped cylindrical body having a female thread for engaging the male thread on an inner peripheral surface of the cylindrical body end section,

the pouch accommodating a content in a hermetically encapsulated state, and being perforated at a position inside the cylindrical section of the extruding outlet base body after its base body is attached to the pouch.
The container according to Claim 1, comprising a cup-shaped cover having a female thread for engaging the male thread of the cylindrical section of the extruding outlet base body, and the cup-shaped cover comprising a piercing stick which is integrally formed into an inner bottom surface of the cover and is forced onto the outlet base body to perforate the pouch after the extruding outlet base body is attached to the pouch.
A container comprising, instead of the extruding outlet according to Claim 1, an extruding nozzle integrally formed with a flange section which is to be attached to the pouch and is formed at the end section of the cone-shaped cylindrical body.
The container according to any one of Claims 1, 2, and 3, wherein the film-shaped material for constituting the pouch is a laminated film comprising a gas barrier layer or a water vapor barrier layer constituted by at least one of the layers including an aluminum foil layer, a transparent deposited polyethylene telephthalate resin layer, a transparent deposited polyamide resin layer, a composite stretched polyamide resin layer, a composite stretched polypropylene resin layer, and an ethylene-vinyl alcohol copolymer resin layer.
The container according to any one of Claims 1, 2, 3, and 4, wherein the pouch is a pouch in the shape of a bottom of a ship.
The container according to any one of Claims 1, 2, 3, and 4, wherein the pouch is a standing pouch.
A container for accommodating a fluid with high viscosity and for extruding the fluid in a predetermined amount in each time by use of an extruder, comprising:

a pouch constituted by forming a film-shaped material into bag; and

an extruding outlet attached to an end portion of the pouch;

the extruding outlet comprising:

an extruding outlet base body constituted by a cylindrical section having a male thread at its outer peripheral surface, and
a flange section which is to be attached to the pouch and is formed at one end portion of the cylindrical section; and

an extruding nozzle constituted by a cone-shaped cylindrical body having a female thread for engaging the male thread on an inner peripheral surface of the cylindrical body end section.
The container of Claim 7, with the fluid with high viscosity hermetically encapsulated therein.
The container of Claim 7 or Claim 8, in which the fluid with high viscosity is an adhesive.
A cup-shaped cover for the container of any one of Claims 7 to 9, comprising:

a female thread for engaging the male thread of the cylindrical section of the extruding outlet base body; and

a piercing stick which is integrally formed onto an inner bottom surface of the cover.
Use of the container of any one of Claims 7 to 9, comprising:

being perforated at a position inside the cylindrical section of the extruding outlet base body after its base body is attached to the pouch before practical use.
Use of Claim 11, in which the perforation is made with the cup-shaped cover of Claim 10.
Use of Claim 11 or 12, in which the container is left with the extruding outlet base body capped with the cup-shaped cover of Claim 10 after practical use.