Storage container and manufacturing method for storage container

Abstract

To provide a storage container and a manufacturing method thereof capable of sufficiently welding a lid member even when the storage container is reused, which can contribute to the realization of a sustainable society such as a carbon-free / recycling society.SOLUTION: A storage container 1 has a storage part 2 for storing an article, an opening 10 for storing the article in the storage part, and an opening 5 forming the opening. A first welded part welded to a first lid part 3 covering the opening, and a second welded part that is welded to a second cover part 33 that covers the opening and is different from the first welded part are formed in the opening. The first welded part and the second welded part are continuously formed along a circumferential direction of the opening.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a storage container and a method for manufacturing the storage container. [Background technology]

[0002] When products are distributed in the market, they are sometimes distributed in a state where they are housed in a storage container. For example, ink cartridges that store ink are distributed in a state where they are housed in a storage container when they are distributed in the market. Storage containers for housing such ink cartridges are required to have durability to protect the stored products from vibrations during transportation and impacts from dropping during handling. Furthermore, they are also required to suppress evaporation of ink from inkjet cartridges when they are distributed in the market.

[0003] As an ink cartridge storage container that meets such requirements, Patent Document 1 discloses a storage container in which a film-like lid is welded to a welding part provided at the opening of the storage container to seal the opening. When using a product stored in the storage container, the user can remove the stored product by peeling off the lid welded to the storage container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-55896 A Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, there has been a demand for the reuse of resources in order to realize a sustainable society such as a decarbonized / recycling society. However, in the case of the storage container described in Patent Document 1, when attempting to reuse a storage container to which a lid has been welded once, a new lid must be welded again to the welded part that has been used once, since only one welded part is formed on the storage container. Since the welded part once welded is crushed to some extent, there is a risk that the lid cannot be welded to the storage container in the same manner as when it was used for the first time when it is reused. If the lid is not sufficiently welded to the opening of the storage container, there is a risk that the lid may peel off due to the impact when the storage container is dropped or deformation of the storage container due to temperature or pressure fluctuations. In other words, there is a concern that the product stored inside the container cannot be protected.

[0006] In view of the above problems, the present invention has an object to provide a storage container that allows a lid to be sufficiently welded even when the storage container is reused, and a manufacturing method thereof. [Means for solving the problem]

[0007] In order to solve the above problems, the storage container of the present invention has a storage section for storing an item, an opening for storing the item in the storage section, and an opening for forming the opening, and is characterized in that a first welded portion welded to a first lid portion covering the opening and a second welded portion welded to a second lid portion covering the opening and different from the first welded portion are formed at the opening, and the first welded portion and the second welded portion are formed continuously along the circumferential direction of the opening. Effect of the Invention

[0008] According to the present invention, it is possible to provide a storage container and a manufacturing method thereof that allow the lid to be sufficiently welded even when the storage container is reused. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view of a storage container according to the first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view of a storage container according to the first embodiment. [Diagram 3] 3A to 3C are schematic views showing a manufacturing method of the storage container according to the first embodiment. [Figure 4] 5A to 5C are enlarged views of an opening in a manufacturing process of the storage container according to the first embodiment. [Diagram 5] 5A to 5C are schematic diagrams showing a method for remanufacturing a storage container according to the first embodiment. [Figure 6] 5A to 5C are enlarged views of an opening in a remanufacturing process of the storage container according to the first embodiment. [Figure 7] 11 shows an enlarged portion of the opening in the second embodiment. [Figure 8] 8A to 8C are schematic diagrams showing a method for remanufacturing a storage container according to a second embodiment. [Figure 9] 13 is an enlarged view of an opening in a remanufacturing process of a storage container according to a second embodiment. FIG. [Figure 10] FIG. 13 is an enlarged view of an opening in which a separable portion is formed from the rear surface to the front surface of the opening. [Figure 11] FIG. 13 is an enlarged view of an opening in the third embodiment. [Figure 12] 8A to 8C are schematic views showing a method for manufacturing a storage container according to a third embodiment. [Figure 13] 13A to 13C are enlarged views of an opening in a manufacturing process of a storage container according to a third embodiment. [Figure 14] FIG. 13 is an enlarged view of an opening in the fourth embodiment. [Figure 15] 13A to 13C are enlarged views of an opening in a manufacturing process of a storage container according to a fourth embodiment. [Figure 16] FIG. 13 is an enlarged view of an opening in the fourth embodiment. [Figure 17] An enlarged view of an opening in the fourth embodiment. [Figure 18] FIG. 13 is a cross-sectional view of a storage container according to a fifth embodiment. [Figure 19] FIG. 13 is an enlarged view of an opening in the fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the following embodiment does not limit the subject matter of the present invention, and not all combinations of features described in the embodiment are necessarily essential to the solution of the present invention. Note that the same reference numbers are used for the same components.

[0011] (First embodiment) The storage container in this embodiment will be described. The storage container in this embodiment is an ink cartridge storage container in which an ink cartridge that stores ink is stored when the ink cartridge is distributed in the market. Note that, although the ink cartridge storage container is described in this embodiment, the item stored in the storage container is not limited to an ink cartridge.

[0012] FIG. 1 is a perspective view of a storage container 1 in the first embodiment. FIG. 1(a) shows a perspective view of the storage container 1 before a first lid portion 3 (FIG. 1(b)) that covers an opening 10 is welded to an opening 5. The storage container 1 has a storage section 2 for storing an article inside, an opening 10 for storing an article in the storage section 2, and an opening 5 for forming the opening 10. The opening 5 has a first welded portion 16 that is welded to the first lid portion 3 that covers the opening 10, and a second welded portion 26 that is welded to a second lid portion 33 that covers the opening 10 and is different from the first welded portion 16. The opening 5 is preferably flange-shaped in order to have the first welded portion 16 and the second welded portion 26. An ink cartridge 4 can be stored in the storage section 2 through the opening 10. The storage section 2 does not have to be rectangular, and the opening 10 does not have to be rectangular.

[0013] In an ink cartridge (inkjet head) equipped with a recording element substrate that ejects ink, liquid is likely to evaporate from the ejection ports of the recording element substrate. As described below, in the present invention, the second lid portion 33 (FIG. 5) and the opening 5 are sufficiently welded together even during reuse, so that evaporation of liquid can be suppressed. In other words, the storage container 1 of the present invention is suitable for a form in which the ink cartridge 4 is an inkjet head equipped with a recording element substrate that ejects ink.

[0014] 1(b) shows a perspective view of storage container 1 with first lid portion 3 welded to opening 5. First lid portion 3 functions as a lid for storage container 1 by being welded to first weld portion 16, and second lid portion 33 (FIG. 5) described below functions as a lid for storage container 1 by being welded to second weld portion 26. In order to improve the sealing performance between first lid portion 3 or second lid portion 33 and opening 5, first weld portion 16 and second weld portion 26 are formed continuously along the circumferential direction of opening 10.

[0015] FIG. 2 shows a cross-sectional view of the storage container 1. FIG. 2(a) shows a BB′ cross-sectional view of FIG. 1(b). The arrow indicates the peeling direction when peeling the first lid portion 3 from the storage container 1. Here, the ink cartridge 4 is omitted from the illustration. After the ink cartridge 4 stored in the storage section 2 is distributed on the market, the user peels the first lid portion 3 from the storage container 1. Then, the ink cartridge 4 is taken out of the storage section 2 through the opening 10, and the ink cartridge 4 is used. The first lid portion 3 preferably has a knob portion 23 that is not welded to the opening 5 so that the user can easily peel it off. Similarly, the second lid portion 33 (FIG. 5) also preferably has a knob portion 23. Since the knob portion 23 is provided, the first lid portion 3 and the second lid portion 33 can be easily peeled off, and damage to the storage container 1 caused by forcibly peeling off the first lid portion 3 and the second lid portion 3 can be suppressed. The width of the grip portion 23 is not limited as long as it is wide enough for the user to grip it, but it is preferable that it is, for example, 1 cm or more.

[0016] Fig. 2(b) shows a cross-sectional view taken along line AA' in Fig. 1(a). In this embodiment, a first welded portion 16 and a second welded portion 26 are formed in the opening 5 as welded portions, but the number of welded portions is not limited to two, and may be two or more. In other words, a third welded portion, a fourth welded portion, etc. may be provided. As will be described later, it becomes possible to reuse the storage container 1 for the number of welded portions.

[0017] The first welded portion 16 and the second welded portion 26 are in a convex shape. If the first welded portion 16 and the second welded portion 26 were not in a convex shape, the entire opening 5 would be welded. In that case, the welded area would be too large, and the user may not be able to easily peel the first lid portion 3 and the second lid portion 33 from the opening 5. In other words, since the first welded portion 16 and the second welded portion 26 are in a convex shape, the first lid portion 3 and the second lid portion 33 are welded to the first welded portion 16 or the second welded portion 26, and the welded area becomes an appropriate size, and both airtightness and ease of peeling of the lid portion can be achieved.

[0018] In addition, in Figure 2 (b), it is preferable that, of the welds formed at the opening 5, the welded portion on the side farther from the opening 10 is the first welded portion 16, and the welded portion on the side closer to the opening 10 is the second welded portion 26.

[0019] FIG. 3 shows a step (first welding step) of welding the first lid portion 3 covering the opening 10 of the storage container 1. In other words, it shows a manufacturing method of the storage container 1. Note that the illustration of the contents stored in the storage container 1 is omitted. First, as shown in FIG. 3(a), the first lid portion 3 and the first welding horn 101 are arranged at a position facing the opening 5 of the storage container 1. Next, as shown in FIG. 3(b), the welding horn 101 is lowered so that the first lid portion 3 abuts against the first welding portion 16. In this state, the first welding portion 16 is melted to weld the first lid portion 3 and the first welding portion 16. Note that the first welding horn 101 is a welding horn that does not abut against the second welding portion 26 but only abuts against the first welding portion 16. Finally, as shown in FIG. 3(c), the first welding horn 101 is raised. Through these steps, the first lid portion 3 covering the opening 10 is welded to the first weld portion 16, whereby a sealed storage container 1 can be manufactured.

[0020] The method used for welding the lid portion 3 may be any method capable of melting the welded portion, such as ultrasonic welding, vibration welding, heat welding, etc. Among these, the heat welding method is preferable because it allows relatively easy temperature control and load control.

[0021] FIG. 4 shows an enlarged view of the B portion in FIG. 3(c). FIG. 4(a) shows an enlarged view of the opening 5 in a state where the first lid portion 3 is in contact with the first welding portion 16. The first lid portion 3 has a welding layer 13 to be welded to the welding portion and a base material layer 12 supporting the welding layer 13. The configuration of the second lid portion 33 is the same as that of the first lid portion 3. First, the welding layer 13 comes into contact with the tip of the first welding portion 16, and the first welding portion 16 melts together with the welding layer 13. Then, as shown in FIG. 4(b), welding is performed at the position where the base material layer 12 and the first welding portion 16 come into contact with each other via the welding layer 13. In other words, in the welding process between the first lid portion 3 and the storage container 1, the base material layer 12 and the first welding portion 16 are welded by pressing them together via the welding layer 13. At this time, the first welded portion 16 is thermally deformed and crushed due to the load from the first welding horn 101, etc. As the first welded portion 16 is crushed, the area where the first welded portion 16 and the welding layer 13 are welded increases, and the first lid portion 3 and the storage container 1 are well welded. On the other hand, if the area where the first welded portion 16 and the welding layer 13 are welded becomes too large, the first lid portion 3 and the storage container 1 are firmly welded, and it may become difficult to remove (peel off) the first lid portion 3 from the opening 5.

[0022] As described above, the first lid portion 3 of the storage container 1 distributed on the market is peeled off by the user, and the item (ink cartridge) stored therein is taken out. Then, the storage container 1 may be collected by a collection company or the like and reused.

[0023] When attempting to reuse a conventional storage container to which a lid member has been welded once, since only one welded portion is formed, a new lid member must be welded to the welded portion that has already been used once. Since the welded portion that has already been welded is somewhat crushed, there is a risk that the lid member will not be welded to the storage container as well as when it was first used when it is reused.

[0024] FIG. 5 is a schematic diagram showing a reuse process (remanufacturing process) of the collected storage container 1. That is, the process (second welding process) of welding the second lid part 33 to the second welding part 26 of the storage container 1 in which the first lid part 3 has been welded to the first welding part 16 at least once is shown. First, as shown in FIG. 5(a), the second lid part 33 and the second welding horn 102 are arranged at a position facing the opening part 5 of the storage container 1. Next, as shown in FIG. 3(b), the second welding horn 102 is lowered to bring the second lid part 33 into contact with the second welding part 26. In this state, the second welding part 26 is melted to weld the second lid part 33 and the second welding part 26 together. It should be noted that the first welded horn 101 is a welded horn that does not come into contact with the second welded portion 26, but only comes into contact with the first welded portion 16. Finally, as shown in FIG. 3(c), the welded horn 101 is raised. Through these steps, the second lid portion 3 covering the opening 10 is welded to the second welded portion 26, and the sealed storage container 1 can be remanufactured. In other words, the storage container 1 in which the first lid portion 3 is welded to the first welded portion 16 can be reused at least once.

[0025] The method used for welding the second lid portion 33 is the same as the method used for welding the first lid portion 3.

[0026] Fig. 6 shows an enlarged view of part C in Fig. 5(c). Fig. 6(a) shows an enlarged view of the opening 5 in a state where the second lid part 33 is in contact with the first welded part 16. In this state, the first welded part 16 is crushed, so the height of the first welded part 16 is lower than the height of the second welded part 26. Fig. 6(b) shows a state where the second lid part 33 and the second welded part 26 are welded. The second welded part 26 is crushed by melting, so it has about the same height as the first welded part 16.

[0027] In this way, the storage container 1 of this embodiment has the second welded portion 26 in addition to the first welded portion 16 at the opening 5. Therefore, in the first welding process, the first lid portion 3 and the first welded portion 16 can be welded, and in the second welding process, the second lid portion 33 and the second welded portion 26 can be welded. That is, since the first welded portion 16 welded in the first welding process and the second welded portion 26 welded in the second welding process are different, in the second welding process, the second welded portion is in a state where it has never been welded. Therefore, even when the storage container 1 of this embodiment is reused (remanufactured), it is possible to sufficiently weld the lid portion. That is, the present invention promotes the reuse of storage containers. In other words, the technology described in this specification can contribute to the realization of a sustainable society such as a decarbonized / circulation-based society.

[0028] Second embodiment The configuration of a storage container in a second embodiment of the present invention will be described. In the following description, only the parts different from the first embodiment will be mainly described, and the description of the parts similar to the first embodiment will be omitted.

[0029] The second embodiment differs from the first embodiment in that a separable portion 20 is formed in the region of the opening 5 between the first welded portion 16 and the second welded portion .

[0030] FIG. 7 is an enlarged view of the opening 5 in the second embodiment. The detachable portion 20 is a portion for separating the first welded portion 16 and the second welded portion 26. The detachable portion 20 is composed of a plurality of minute holes such as perforations. By having the detachable portion 20, the first welded portion 16, which is an obstacle to the second welded step, can be separated from the storage container 1 together with a part of the opening 5, starting from the detachable portion 20, when remanufacturing the storage container 1 after the first welding step. As a result, even if a part of the peeled off first lid portion 3 remains welded to the first welded portion 16, the first lid portion 3 can be removed together with the first welded portion 16.

[0031] FIG. 8 shows a process of welding the second lid part 33 to the container 1 from which the first weld part 16 has been separated. In the second embodiment, the process of removing the first weld part 16 from the second weld part 26 and then welding the second lid part 33 to the second weld part 26 (second welding process) is the same as that in the first embodiment. First, as shown in FIG. 8(a), the second lid part 33 and the second welding horn 102 are placed at a position facing the opening 5 of the container 1. Next, as shown in FIG. 8(b), the second welding horn 102 is lowered to bring the second lid part 33 into contact with the second weld part 26. In this state, the second weld part 26 is melted to weld the second lid part 33 and the second weld part 26 together. At this time, since the first welded portion 16 is separated from the second welded portion 26, it is possible to prevent the second welded horn 102 from coming into contact with the first welded portion 16. That is, the degree of freedom of the shape that can be adopted as the second welded horn 102 is improved. Finally, as shown in FIG. 8(c), the second welded horn 102 is raised. Through these steps, the second lid portion 33 covering the opening 10 is welded to the second welded portion 26, and the sealed storage container 1 can be remanufactured. That is, the storage container in which the first lid portion 3 is welded to the first welded portion 16 can be reused at least once.

[0032] Fig. 9 shows an enlarged view of part D in Fig. 8(c). Fig. 9(a) shows an enlarged view of the opening 5 in a state where the second lid part 33 is in contact with the second welded part 26. Fig. 9(b) shows a state where the second lid part 33 and the second welded part 26 are welded together.

[0033] 10, the separable part 20 is preferably formed from the rear surface to the front surface of the opening 5. This can improve the ease of the separation step for separating the first welded part 16 from the storage container 1.

[0034] As described above, the storage container 1 according to this embodiment can sufficiently weld the second lid portion 33 even when reusing the storage container 1. Furthermore, since the separable portion 20 is formed in the region of the opening 5 between the first welded portion 16 and the second welded portion 26, it is possible to prevent the first welded portion 16 from becoming an obstacle in the second welding step.

[0035] (Third embodiment) The configuration of a storage container in a third embodiment of the present invention will be described. In the following description, only the parts different from the above-mentioned embodiment will be mainly described, and the description of the parts similar to the above-mentioned embodiment will be omitted.

[0036] The third embodiment differs from the second embodiment in that the height h1 of the first welded portion 16 is greater than the height h2 of the second welded portion 26, as shown in FIG.

[0037] FIG. 12 shows a process (first welding process) of welding the first lid part 3 covering the opening 10 to the opening 5 of the storage container 1 in the third embodiment. First, as shown in FIG. 12(a), the first lid part 3 and the welding horn 103 are arranged at a position facing the opening 5 of the storage container 1. Next, as shown in FIG. 12(b), the welding horn 103 is lowered and the first lid part 3 is brought into contact with the first welding part 16. In this state, the first welding part 16 is melted to weld the lid part 3 and the first welding part 16. Finally, as shown in FIG. 12(c), the welding horn 103 is raised. Through these processes, the first lid part 3 covering the opening 10 is welded to the first welding part 16, and a sealed storage container 1 can be manufactured.

[0038] FIG. 13 shows an enlarged view of the E portion in FIG. 12(c). FIG. 13(a) shows an enlarged view of the opening 5 in a state where the first lid portion 3 is in contact with the first welded portion 16. Then, as shown in FIG. 13(b), the base layer 12 and the first welded portion 16 are welded at a position where they come into contact with each other via the welded layer 13. In the third embodiment, the height h1 of the first welded portion 16 is higher than the height h2 of the second welded portion 26. Therefore, when the height H1 of the first welded portion 16 after the first welding step is H1, if the relationship H1>h2 holds, it is possible to weld only the first lid portion 3 and the first welded portion 16 without welding the first lid portion 3 and the second welded portion 26. That is, the degree of freedom of the shape that can be adopted as the welded horn 103 is improved.

[0039] In order to reuse the storage container 1, storage containers 1 that have been distributed on the market and from which the first lid portion 3 has been peeled off by a user are collected. Then, the first welded portion 16 is separated from the storage container 1 starting from the separable portion 20. Thereafter, the second welding process is performed on the storage container 1 in the same manner as in the second embodiment, whereby the storage container 1 can be reused.

[0040] From the above, even when the storage container 1 is reused, the second lid portion 33 can be sufficiently welded to the storage container 1. Furthermore, when the height of the second welded portion 26 is h2 and the height of the first welded portion after the first welding step is H1, the degree of freedom in the shape that can be adopted for the welded horn 103 is improved by satisfying the relationship H1>h2.

[0041] (Fourth embodiment) The configuration of a storage container in the fourth embodiment of the present invention will be described. In the following description, only the parts different from the above-mentioned embodiment will be mainly described, and the description of the parts similar to the above-mentioned embodiment will be omitted.

[0042] The fourth embodiment differs from the above-described embodiments in that a groove portion is formed in the area of ​​the opening 5 near the first weld 16 and the second weld 26 into which a portion of the first weld 16 or a portion of the second weld 26 can penetrate.

[0043] FIG. 14 shows an enlarged view of an opening in the fourth embodiment. The area near the first welded portion 16 has a first groove 31 into which a part of the first welded portion 16 penetrates in the first welding step. Furthermore, the area near the second welded portion 26 has a second groove 32 into which a part of the second welded portion 26 penetrates in the second welding step. Here, the area near the first welded portion 16 refers to an area of ​​the opening 5 into which the first welded portion 16 may penetrate when the first welded portion 16 is crushed. Similarly, the area near the second welded portion 26 refers to an area of ​​the opening 5 into which the second welded portion 26 may penetrate when the second welded portion 26 is crushed.

[0044] FIG. 15 shows an enlarged view of the opening during the first welding step in the fourth embodiment. FIG. 15(a) shows an enlarged view of the opening 5 in a state where the first lid portion 3 is in contact with the first welding portion 16. Then, as shown in FIG. 13(b), welding is performed at the position where the base layer 12 and the first welding portion 16 are in contact with each other via the welding layer 13. At this time, a part of the first welding portion 16 enters the first groove portion 31. Therefore, it is possible to prevent the first welding portion 16 from spreading excessively. That is, it is possible to improve the ease with which the user peels off the first lid portion 3 from the opening 5. Similarly, in the second welding step, a part of the second welding portion 26 enters the second groove portion 32. That is, it is possible to improve the ease with which the user peels off the second lid portion 33 from the opening 5 in the storage container 1 after reuse.

[0045] Moreover, it is preferable that the first groove 31 is formed continuously along the first welded portion 16, and the second groove 32 is formed continuously along the second welded portion 26. This allows the first lid portion 3 and the second lid portion 33 to be welded to the opening 5 uniformly.

[0046] Moreover, it is preferable that the first groove 31 is formed on the inside and outside of the first welded portion 16, and the second groove 32 is formed on the inside and outside of the second welded portion 26. This can further reduce the risk of the first lid portion 3 or the second lid portion 33 being excessively welded to the opening 5.

[0047] 16(a), it is preferable that a separable portion 20 is formed at the opening 5 in which the groove is formed. With this configuration, it is possible to separate the first welded portion 16 from the storage container 1 before the second welding step while suppressing excessive welding between the first lid portion 3 and the first welded portion 16. It is also preferable that the height of the first welded portion 16 is higher than the height of the second welded portion 26 in the state before the first welding step, as shown in FIG. 16(b).

[0048] Furthermore, as shown in Fig. 17(a), it is preferable that the separable part 20 is formed in the lower part of the groove. This makes it easier to separate the first welded part 16 from the storage container 1 starting from the separable part 20. Note that, although the separable part 20 is formed in the lower part of the first groove part 31 in Fig. 17(a), the separable part 20 may be formed in the lower part of the second groove part 32.

[0049] From the above, even when the storage container 1 is reused, the second lid portion 33 can be sufficiently welded to the storage container 1. Furthermore, by providing a groove portion in the area near the welded portion, it is possible to improve the ease of peeling off the lid portion.

[0050] Fifth embodiment The configuration of a storage container in the fifth embodiment of the present invention will be described. In the following description, only the parts different from the above-mentioned embodiment will be mainly described, and the description of the parts similar to the above-mentioned embodiment will be omitted.

[0051] The fifth embodiment differs from the above-described embodiments in that the opening 5 has a T-shape.

[0052] 18 is a cross-sectional view of a storage container 1 according to the fifth embodiment, in which the arrow indicates the peeling direction of the lid portion.

[0053] Fig. 19 shows an enlarged view of part F in Fig. 18. Fig. 19(a) shows a configuration in which the first welded part 16 is formed at a position farther from the opening 10 than the second welded part 26, and Fig. 19(b) shows a configuration in which the first welded part 16 is formed at a position closer to the opening 10 than the second welded part 26. As shown in Figs. 19(a) and 19(b), when the opening 5 is T-shaped, it is preferable to form the first welded part 16 at a position closer to the first welded part 16 than the second welded part 26.

[0054] Even if the opening 5 is T-shaped, since multiple welded portions are formed at the opening 5, the lid portion can be sufficiently welded to the storage container 1 when the storage container 1 is reused.

[0055] In addition, configurations in the above-described embodiments may be appropriately combined.

[0056] To summarize the present invention as described above, the present invention includes the following configurations.

[0057] (Configuration 1) A storage section for storing an item; an opening for accommodating the article in the storage section; an opening portion forming the opening, A first welded portion is welded to a first lid portion covering the opening, and a second welded portion is welded to a second lid portion covering the opening and is different from the first welded portion, A storage container, wherein the first welded portion and the second welded portion are continuously formed along a circumferential direction of the opening.

[0058] (Configuration 2) 2. The container according to claim 1, wherein the article is an ink cartridge that stores ink.

[0059] (Configuration 3) 3. The container according to claim 2, wherein the ink cartridge includes a recording element substrate that ejects ink.

[0060] (Configuration 4) the first welded portion and the second welded portion have a convex shape, The height of the first welded portion is greater than the height of the second welded portion, 4. The storage container according to any one of configurations 1 to 3, wherein the first welded portion is formed at a position farther from the opening than the second welded portion.

[0061] (Configuration 5) A storage container as described in any one of configurations 1 to 4, wherein a separable portion for separating the first welded portion from the storage container is formed in a region of the opening between the first welded portion and the second welded portion.

[0062] (Configuration 6) 6. The container according to claim 5, wherein the separable portion is formed by a plurality of minute holes.

[0063] (Configuration 7) The storage container according to any one of configurations 1 to 6, wherein a groove portion is formed in a region of the opening near the first welded portion or the second welded portion into which a part of the first welded portion or a part of the second welded portion can enter.

[0064] (Configuration 8) 8. The container according to claim 7, wherein the groove is formed continuously along the first welded portion or the second welded portion.

[0065] (Configuration 9) The container according to configuration 7 or 8, wherein the grooves are formed on the inside and outside of the first welded portion, respectively, or the grooves are formed on the inside and outside of the second welded portion, respectively.

[0066] (Configuration 10) a separable portion for separating the first welded portion from the container is formed in a region of the opening between the first welded portion and the second welded portion, 10. The container according to any one of configurations 7 to 9, wherein the separable portion is formed in a lower portion of the groove portion.

[0067] (Configuration 11) A storage container as described in any one of configurations 1 to 6, wherein a groove portion into which a part of the first welded portion or a part of the second welded portion enters is formed in an area of ​​the opening near the first welded portion and the second welded portion, respectively.

[0068] (Configuration 12) 12. The storage container according to any one of configurations 1 to 11, wherein the first lid portion is welded to the first welded portion, or the second lid portion is welded to the second welded portion.

[0069] (Configuration 13) A method for manufacturing a storage container having a storage section for storing an item, an opening for storing the item in the storage section, and an opening for forming the opening, comprising: the opening has a first welded portion welded to a first lid portion covering the opening, and a second welded portion welded to a second lid portion covering the opening and different from the first welded portion; the first welded portion and the second welded portion are continuously formed along a circumferential direction of the opening, A method for manufacturing a storage container, comprising a first welding step of welding the first lid portion to the first weld portion.

[0070] (Configuration 14) 14. The method for manufacturing a storage container according to claim 13, wherein the article is an ink cartridge having a recording element substrate that ejects ink.

[0071] (Configuration 15) the first welded portion and the second welded portion have a convex shape, The height of the first welded portion is greater than the height of the second welded portion, 15. The method for manufacturing a storage container according to aspect 13 or 14, wherein the first welded portion is formed at a position farther from the opening than the second welded portion.

[0072] (Configuration 16) a recovery step of recovering the storage container from which the first lid portion has been peeled off; 16. The method for manufacturing a storage container according to any one of configurations 13 to 15, further comprising a second welding step of welding the second lid portion to the second weld portion.

[0073] (Configuration 17) a separable portion for separating the first welded portion from the container is formed at the opening between the first welded portion and the second welded portion, A method for manufacturing a storage container according to configuration 16, comprising a step of separating the first welded portion from the storage container starting from the detachable portion after the recovering step and before the second welding step.

[0074] (Configuration 18) a groove is formed in a region of the opening near the first welded portion, 18. The method for manufacturing a storage container according to any one of configurations 13 to 17, wherein in the first welding step, a part of the first welded portion enters the groove portion.

[0075] (Configuration 19) A method for manufacturing a storage container described in any one of configurations 13 to 18, wherein a height of the first welded portion after the first welding process is higher than a height of the second welded portion after the first welding process. [Explanation of symbols]

[0076] 1. Containment Container 2. Storage section 3 Lid part (first lid part) 5 Opening 10 aperture 16 First weld 26 Second weld 33 Lid portion (second lid portion)

Claims

1. A storage section for storing an item; an opening for accommodating the article in the storage section; an opening portion forming the opening, A first welded portion is welded to a first lid portion covering the opening, and a second welded portion is welded to a second lid portion covering the opening and is different from the first welded portion, The container, wherein the first welded portion and the second welded portion are continuously formed along a circumferential direction of the opening.

2. The container according to claim 1 , wherein the article is an ink cartridge that stores ink.

3. The container according to claim 2 , wherein the ink cartridge includes a recording element substrate that ejects ink.

4. the first welded portion and the second welded portion have a convex shape, The height of the first welded portion is greater than the height of the second welded portion, The container according to claim 1 , wherein the first welded portion is formed at a position farther from the opening than the second welded portion.

5. The storage container according to claim 1 , wherein a separable portion for separating the first welded portion from the storage container is formed in a region of the opening between the first welded portion and the second welded portion.

6. The container according to claim 5 , wherein the separable portion is formed by a plurality of minute holes.

7. 2. The storage container according to claim 1, wherein a groove portion is formed in a region of the opening near the first welded portion or the second welded portion into which a portion of the first welded portion or a portion of the second welded portion enters.

8. The container according to claim 7 , wherein the groove is formed continuously along the first welded portion or the second welded portion.

9. The container according to claim 7 , wherein the grooves are formed on the inner and outer sides of the first welded portion, or the grooves are formed on the inner and outer sides of the second welded portion, respectively.

10. a separable portion for separating the first welded portion from the container is formed in a region of the opening between the first welded portion and the second welded portion, The container according to claim 7 , wherein the separable portion is formed in a lower portion of the groove portion.

11. 2. The storage container according to claim 1, wherein a groove portion into which a part of the first welded portion or a part of the second welded portion enters is formed in an area of ​​the opening near the first welded portion and the second welded portion, respectively.

12. The storage container according to claim 1 , wherein the first lid portion is welded to the first welded portion, or the second lid portion is welded to the second welded portion.

13. A method for manufacturing a storage container having a storage section for storing an item, an opening for storing the item in the storage section, and an opening for forming the opening, comprising: the opening has a first welded portion welded to a first lid portion covering the opening, and a second welded portion welded to a second lid portion covering the opening and different from the first welded portion; the first welded portion and the second welded portion are continuously formed along a circumferential direction of the opening, A method for manufacturing a storage container, comprising a first welding step of welding the first lid portion to the first weld portion.

14. The method for manufacturing a storage container according to claim 13, wherein the article is an ink cartridge having a recording element substrate that ejects ink.

15. the first welded portion and the second welded portion have a convex shape, The height of the first welded portion is greater than the height of the second welded portion, The method for manufacturing a storage container according to claim 13 , wherein the first welded portion is formed at a position farther from the opening than the second welded portion is.

16. a recovery step of recovering the storage container from which the first lid portion has been peeled off; The method for manufacturing a storage container according to claim 13 , further comprising a second welding step of welding the second lid portion to the second weld portion.

17. a separable portion for separating the first welded portion from the storage container is formed at the opening between the first welded portion and the second welded portion, The method for manufacturing a storage container according to claim 16 , further comprising a step of separating the first welded portion from the storage container starting from the detachable portion after the recovering step and before the second welding step.

18. a groove is formed in a region of the opening adjacent to the first welded portion, The method for manufacturing a storage container according to claim 13 , wherein in the first welding step, a part of the first welded portion enters the groove portion.

19. The method for manufacturing a storage container according to claim 13 , wherein a height of the first welded portion after the first welding step is higher than a height of the second welded portion after the first welding step.

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