JP4458520B2 - Composite container - Google Patents

Description

  The present invention relates to a composite container including an exterior such as cardboard and an interior container equipped inside the exterior.

  Many bag-in-box type containers have been proposed in which a flexible plastic bag or the like is housed in a rigid housing made of cardboard or the like (see, for example, Patent Document 1).

  In such a container, it is good to contain a low-viscosity substance, but when a high-viscosity substance such as an adhesive is contained, the bag itself may come off together with the contents, or the inside of the bag body. The economic loss was considerable because it was difficult to collect all the viscous material adhering to the peripheral wall.

  On the other hand, plastic containers and metal containers can flatten the bottom and collect viscous substances cleanly, so there is little economic loss, but strength, water resistance, waterproofness and moisture resistance are improved as well as strength. It is a thing. For example, an injection molding method is generally used for manufacturing a plastic container, but an expensive manufacturing die is required in the manufacturing process, and the manufacturing cost is remarkably increased.

  On the other hand, vacuum molding has recently attracted attention as a molding method with low mold costs. In the vacuum forming method, a plastic sheet material is heated with a heater to give flexibility, and then the mold hits the sheet material while it swells, covers the mold, and the air between the mold and the sheet is removed by a vacuum pump. It is extracted and cooled to create a molded product.

  However, the vacuum molding method has a drawback that it is difficult to remove the mold at fine corners or the like when the molded product is removed from the mold after cooling. For this reason, there have been contrivances such as providing an angle of inclination opening in the direction of pulling out or rounding the corners. FIG. 8 is a side sectional view showing the structure of a conventional composite container, and FIG. 9 is a plan view of the container of FIG. 8 with the lid portion removed. FIG. 10 is an explanatory diagram showing a detailed configuration surrounded by a circle in FIG. 9, and FIG. 11 is a front view in the direction of the arrow in FIG.

  As shown in FIGS. 8 and 9, the composite container 50 includes a corrugated cardboard casing 51 having a rectangular bottom surface, and an interior container body 52 in which a thermoplastic resin sheet housed inside the casing is vacuum-molded. A highly viscous liquid 53 such as glue is held and sealed with a sealing film 54.

  The inner body 52 has ribs 56 protruding so that the opening edge engages with the upper part of the opening edge 55 of the housing 51, and the outer peripheral edge of the rib 56 except for the four corners is the opening edge of the housing 51. A hanging piece 57 is formed so as to straddle the edge 55 part. In the distribution stage, the composite container 50 is covered with a cardboard lid 58, and the container body and the lid are packed together with one or two bands or the like.

  As described above, in order to remove the inner packaging body 52 formed by the vacuum molding method from the mold, there has been a device for providing an inclination in the direction of extraction or providing a corner at the corner. Therefore, as shown in FIG. 9 and FIG. 10, it has been necessary to incline the side walls and round the four corners formed by the side walls reaching the opening of the interior body 52 with rounding. The size of the radius is considered to be at least 2 cm if the length of one side of the opening is about 28 cm, and the inclination angle of the side portion with respect to the bottom surface is 6 degrees or more. It was thought that it had to lean.

  However, because of the rounded corners of the four corners, the hanging piece 57 of the rib 56 must be cut off at the four corners as shown in FIGS. 9, 10, and 11. An external housing must be formed to do so. In order to form rounds at the four corners of a cardboard box, a dedicated processing device is required, and as a result, it becomes expensive. Also, the corrugated cardboard box that is formed has four corners that are fragile and cannot be made into an overlap type in which the lower surface is double-folded. there were.

  As shown in FIG. 8, the internal vessel 52 is fragile because it is formed by vacuum forming. The external casing 51 bears most of the weight applied to the composite container 50, particularly the weight in the vertical direction.

Japanese Patent Publication No. 45-9638

  Therefore, the applicant of the present invention aims to obtain a composite container which is inexpensive and does not weaken the strength against the vertical load, and further, for the purpose of obtaining a composite container which can be stacked in five or six stages, The entire circumference of the edge is provided with ribs that come into contact with the opening edge of the exterior casing, and the radius of the corners formed by the side walls outside the opening edge of the interior container is 3 to 6 mm. The composite container which is in the range and whose outer peripheral edge of the rib is suspended on the outer wall surface side of the outer casing is proposed. FIG. 12 is a side sectional view showing the structure of this composite container, and FIG. 13 is a plan view of the container of FIG. 12 with the lid portion removed. FIG. 14 is an explanatory diagram showing a detailed configuration surrounded by a circle in FIG. 12, and FIG. 15 is a front view in the direction of the arrow in FIG.

  As shown in FIGS. 12 and 13, the composite container 90 includes a corrugated cardboard casing 91 having a rectangular bottom surface, and an interior container 92 formed by vacuum-forming a thermoplastic resin sheet housed inside the container 91. A highly viscous liquid 93 is held and sealed with a sealing film 94.

  In the interior container 92, the rib 96 extends so that the opening edge engages with the upper part of the opening edge 95 of the housing 91, and the outer peripheral edge of the rib 96 straddles the opening edge 95 of the housing 91. A hanging piece 97 is formed as described above. In the distribution stage, the composite container 90 is covered with a cardboard lid 98, and the container main body and the lid are integrally packed with one or two bands or the like.

  As shown in FIG. 14, the side wall of the inner packaging body 92 of the present invention has an inclination opening angle of 2 degrees or more with respect to the bottom surface, and it was confirmed that there is no support when the side wall is removed from the mold. Further, in the inner packaging body 92, it is necessary to round the four corners formed by the side walls reaching the opening of the inner packaging body 92 with rounded corners. In the present embodiment, the size of the round is 3 to 6 cm, similar to the thickness of the cardboard forming the housing 91.

  As a result, as shown in FIG. 14, the drooping piece 97 can be formed so as to straddle the open end edge 95 of the housing 91 at the entire outer peripheral edge of the rib 96. For this reason, it is inexpensive and the strength against the load in the vertical direction is not weak, and it can be stacked in five or six stages.

  However, although it is good in a state where the cover portion 98 is covered and integrated with a band or the like, in a state where the band portion is removed and the cover portion 98 is removed as shown in FIG. There is a demand for easily opposing the lateral force when the highly viscous liquid 93 such as the glue inside is held without being used up.

  The present invention is not only to obtain a composite container that is inexpensive and does not weaken the strength against the vertical load, and further to the lateral force even when the contained item is not used up. It is an object to obtain a composite container having sufficient strength.

The composite container according to the invention described in claim 1 has an outer casing having a substantially rectangular cross section parallel to a rigid bottom surface, and a bottom surface obtained by vacuum molding a thermoplastic resin sheet accommodated in the casing. In a composite container comprising a substantially rectangular interior container, and a lid that covers the interior container and an exterior housing together with an opening,
The entire circumference of the opening edge of the interior container is provided with a rib that hangs down from the exterior housing opening end to the side wall outer surface so as to cover the opening edge of the exterior housing,
A rib end piece is provided at the edge of the rib so as to hang on the outer surface of the side wall over the entire circumference.
The lid portion is formed with an edge portion that is suspended over the entire circumference of the lid portion so as to face the suspended rib, and a locking piece for hooking the rib end piece is formed on the edge portion. It is characterized in that it is projected.

  The composite container according to the invention described in claim 2 is characterized in that the exterior casing described in claim 1 is made of cardboard.

The composite container according to the invention described in claim 3 is provided with a lid opening mechanism that exposes a part of the opening of the interior container in the lid part of claim 1 or 2,
As the opening mechanism, in order to open an opening piece composed of one side of the substantially rectangular shape of the opening and a part of the both sides, each of the opposing positions of the edge of the lid that covers the sides of the both ends And a groove serving as a bending guide formed on a straight line connecting the respective cuts.

  A composite container according to the invention described in claim 4 is characterized in that the cut according to claim 3 is formed between 1/2 and 1/5 of the total length of each opposing side. It is.

According to a fifth aspect of the present invention, there is provided the composite container according to the third aspect, wherein the lid portion according to the third or fourth aspect is an opening that holds the open state of the open piece that is folded along the groove serving as the folding guide. With lid holding function
As this lid-holding function, a projecting piece formed on the upper surface of the lid piece is an engagement end into which the projecting piece formed on the upper surface of the lid portion is inserted when the lid piece is bent. It is characterized by having.

The composite container according to the invention described in claim 6 is provided with a lid opening mechanism for exposing a part of the opening of the interior container in the lid part of claim 1 or 2,
The opening mechanism is formed on each of the edge portions of the lid portion covering the two sides orthogonal to each other in order to open the opening piece consisting of a part of the two sides substantially orthogonal to each other in a substantially rectangular shape. It is characterized by comprising a cut and a groove serving as a bending guide formed on a straight line connecting the cuts.

  The composite container according to the invention described in claim 7 is characterized in that a slip prevention piece for preventing the hook string from slipping is formed on the lid portion according to any one of claims 1 to 6. Is.

  As described above, the present invention provides a composite container that is inexpensive and does not weaken the strength against the load in the vertical direction. Further, even in a state where the contents accommodated therein are not used up, the lateral direction There is an effect that it is possible to obtain a composite container having a sufficient strength with respect to the force.

  In the present invention, the outer casing having a substantially rectangular cross-section parallel to the rigid bottom surface, the inner container having a substantially rectangular bottom surface obtained by vacuum molding a thermoplastic resin sheet housed in the casing, In a composite container including an inner container and a lid that covers the opening together with the outer casing, the outer casing opening is provided so as to cover the opening edge of the outer casing around the entire opening edge of the inner container. A rib that hangs down from the end to the outer side surface of the side wall, and an end edge of the rib includes a rib end piece that hangs down from the outer side surface of the side wall over the entire circumference. An edge that hangs down around the entire circumference is formed, and a locking piece for hooking the rib end piece is provided on the edge so that it does not require special processing as an exterior housing. In addition to being inexpensive and strong against load in the vertical direction, it is housed inside as well. Even when no use up accommodating was, it is possible to obtain a composite container having sufficient strength against lateral forces.

  Since the interior container and the lid of the present invention are molded by vacuum molding, the manufacturing process is simple and the manufacturing cost can be greatly reduced. Furthermore, an expensive manufacturing die is not required as compared with injection molded plastic containers and metal containers, the manufacturing cost can be reduced, and the manufacturing process can be simplified. Moreover, since the thickness is thin, it also has an advantage that disposal after use is extremely easy.

  The outer casing of the present invention only needs to have a rectangular cross section parallel to the rigid bottom surface. For example, when stacked and stacked, the outer casing is rigid without applying a load from the top to the internal container. As long as the housing is borne, it is sufficient. For example, a rigid housing made of wood, plastic, or the like may be used, but preferably, the exterior housing is made of cardboard. Thereby, it becomes possible to print or attach a handle to the exterior made of cardboard, and it is easy to handle without misidentification. Further, the entire circumference of the opening edge of the interior container mounted in the exterior housing is provided with a rib that contacts the opening edge of the exterior housing, and the side wall outer surfaces at the opening edge of the interior container are formed. The radius of the four corners is within the range of 3 to 6 mm, and the outer peripheral edge of the rib hangs down to the outer wall surface of the outer casing, so the lower surface is folded twice. A general overlapping cardboard box can be used. For this reason, it is possible to obtain a composite container that can be stacked in five or six stages at low cost.

  In the composite container of this invention, it does not prevent forming the opening used as a handle in the side wall of an exterior housing | casing. This is because the opposition to the weight in the vertical direction has no effect if the opening serving as the handle is opened. In addition, as an alternative to the handle, the exterior casing, the interior container, and the lid may be tightened with one or two resin bands (so-called plastic bands). When it is defined by two bands, it is tightened so as to cross at the top surface of the lid and the bottom surface of the outer casing. In use, it is possible to counter an excessive lateral force and to carry it more easily by using at least one of the tightened bands while tightening.

  Since the thermoplastic resin sheet is vacuum-molded, the thickness of the container to be installed is thinner than the thickness of the resin sheet. In general, containers formed by vacuum molding have a wall thickness of 1 mm or less and a depth of 100 mm or less. However, in the present invention, in order to maintain sufficient robustness, the wall thickness of the container is preferably 1.5 mm or less. . In this case, even if the height from the bottom of the container to the edge of the opening is 100 mm or more and 350 mm or less, it can be sufficiently molded. In addition, when the depth of the container is 350 mm or more, the strength is reduced and the practicality is lost, and when the thickness of the sheet used for vacuum forming is 1.5 mm or more, the vacuum forming itself cannot be performed. . The lid can be formed by vacuum molding a thermoplastic resin sheet as in the case of the container, but may be formed by other molding methods. For the lid, use a hard resin or a sufficient thickness so that it can resist lateral force. For example, a thermoplastic resin sheet formed by vacuum molding is set to 1.5 mm or more.

  As a material of the interior container, a thermoplastic resin sheet can be molded, but a flexible material such as polypropylene resin is preferably used. Thereby, by drying the high-viscosity liquid such as adhesive remaining inside the container after use, it can be easily removed and the container itself can be regenerated.

  In the case of vacuum molding, in order to take out the molding container from the mold, it is necessary to give the container a certain inclination angle. Therefore, by setting the inclination angle to 2 degrees or more, the accommodation volume of the container itself is improved, and it does not shift even if it is arranged in the exterior.

  Furthermore, about an interior container, you may devise the resin sealing film to loosen the film center part and to stick on the opening edge part of the said container. Thereby, the residual air in the container can be reduced as much as possible, and the expansion of the residual air can be absorbed, so that the resin film is not damaged even by a temperature change during storage.

  The lid portion of the present invention includes an opening mechanism that exposes a part of the opening of the interior container. As a specific lid opening mechanism, in order to open the lid piece composed of one side of the substantially rectangular shape of the opening and a part of the both sides, the opposing edge of the lid that covers the sides of the both ends It includes a cut formed at each position and a groove serving as a bending guide formed on a straight line connecting each cut. As a result, even if one band is tightened as described above, the internal contents can be taken out by using the lid opening mechanism of the lid. In addition, the groove | channel used as a bending guide may be formed continuously, or may be intermittently formed in the shape of a broken line. Further, when formed in a broken line shape, the groove may or may not penetrate the lower surface side.

  Opening and closing can be performed smoothly by forming the slits constituting the lid pieces between 1/2 to 1/5 of the total length of the opposing sides. It does not become an obstacle.

  The lid portion of the present invention is preferably provided with a lid-opening holding function for holding the lid-opening state of the lid-opening piece folded along a groove serving as a folding guide. As a specific lid holding function, the protrusion formed on the upper surface of the opening piece is engaged with the protrusion formed on the upper surface of the lid when the opening piece is bent. And an end. Thereby, an open cover piece can be hold | maintained and a storage thing can be taken in and out smoothly.

  Further, the lid portion of the present invention is preferably formed with a slip prevention piece for preventing the hook string from slipping. As described above, when the exterior casing, the interior container, and the lid are fastened with one or two resin bands (so-called plastic bands), the bands slide in the lateral direction and come off. Disappears. Specifically, a set of protrusions slightly larger than the width of the band is formed at the corner of the lid.

  As another specific lid opening mechanism, in order to open the lid piece consisting of a part of two sides that are orthogonal to each other in a substantially rectangular shape, the edge of the lid that covers the two sides that are orthogonal to each other is opened. It comprises a cut formed in each, and a groove serving as a bending guide formed on a straight line connecting the cuts. As a result, an opening piece having a right-angled triangular shape can be formed, so that the contained item can be taken out even with the two bands tightened as described above.

  In particular, even when the outer casing, the inner container, and the lid are tightened by crossing the flat surface and the bottom with two resin bands (so-called plastic bands), By preventing the groove serving as the bending guide from being engaged with the two bands, it is possible to take out the stored items even while the two bands are tightened.

  FIG. 1 is a side view showing the configuration of an embodiment of the composite container of the present invention. FIG. 2 is a cross-sectional view of the main part of FIG. FIG. 3 is a plan view. FIG. 4 is a side view showing the configuration of the composite container of FIG.

  As shown in FIGS. 1 and 2, the composite container 10 includes a cardboard case 11 having a rectangular bottom surface, and an interior container 12 formed by vacuum molding a thermoplastic resin sheet housed inside thereof, and has a glue inside. A highly viscous liquid 13 such as this is held and sealed with a sealing film 14.

  In the interior container 12, the rib 16 projects so that the opening edge part engages with the upper part of the opening edge 15 of the housing 11, and the outer peripheral edge of the rib 16 straddles the opening edge 15 part of the housing 11. A hanging piece 17 is formed as described above. Similarly, the composite container 10 is covered with a lid 18 formed by vacuum-molding a thermoplastic resin sheet, and the casing 11, the interior container 12, and the lid 18 are integrally packed with one or two resin bands 19. To do.

  As shown in FIG. 2, the side wall of the interior container 12 of the present invention has an inclination opening angle of 2 degrees or more with respect to the bottom surface. In the interior container 12, the four corners formed by the side walls reaching the opening of the interior container 12 are formed. The size of the radius is set to 3 to 6 cm like the thickness of the corrugated cardboard forming the housing 11, and the hanging piece 17 is formed so as to straddle the opening edge 15 of the housing 11 at all the outer peripheral edges of the rib 16. A rib end piece 20 is formed on the end edge of the hanging piece 17 so as to protrude from the side wall outer surface over the entire circumference.

  As shown in FIGS. 2 and 3, the lid portion 18 is formed with an edge portion 21 that hangs around the entire circumference of the lid portion 18 so as to oppose the drooping piece 17 of the rib, and the rib end piece 20 is formed on the edge portion 21. A locking piece 22 is provided on the inside so as to be hooked. Thereby, the cover part 18 can cover and latch the interior container 12.

  As shown in FIGS. 2, 3, and 4, the lid portion 18 includes a lid opening mechanism that exposes a part of the opening of the interior container. Specifically, the lid portion 18 is provided with a broken-line-shaped groove 24 that is formed with a slit 23 at each of the opposed positions of the edge portion 21 and serves as a bending guide formed on a straight line connecting the respective slits 23. By bending a part of the lid portion 18 with the groove 24, the lid opening piece 25 is opened. As a result, the lid lid piece 25 is opened even when one band 19 is tightened as described above, and the internal storage 13 can be taken out.

  The lid portion 18 is provided with a lid-opening holding function for holding the lid-opening state of the lid-opening piece 25. Specifically, a U-shaped cut 26 having a tip protruding from the upper surface of the opening piece 25 and a U-shaped cut 27 at a position opposite to the lid 18 across the groove 24 are provided. The lid piece 25 can be held in an open state by lifting the U-shaped cut 26 projecting from the tip when the lid piece 25 is bent and inserting the tip into the other cut 27.

  Further, a displacement prevention piece 28 for preventing the displacement of the band 19 is formed on the lid portion 18. That is, when the housing 11, the interior container 12, and the lid portion 18 are fastened with the resin band 19, the resin band 19 passes between a pair of protrusions 28 slightly larger than the width of the band formed at the corner portion of the lid portion 18. As a result of the tightening, the band 19 does not slide in the lateral direction and the band 19 is not detached. The misalignment prevention piece 28 may be formed only at the position opposite to the side where the cut 23 is formed, but is further provided at the position opposite the other facing side for the second band to be removed during use. May be.

  FIG. 5 is a side view showing the configuration of another embodiment of the composite container of the present invention. 6 is a cross-sectional view of the main part of FIG. FIG. 7 is a plan view of FIG. As shown in FIGS. 5, 6, and 7, the composite container 30 is similar to the composite container 10 shown in FIGS. 1 to 4, and the casing 31 made of corrugated cardboard having a rectangular bottom surface and the heat stored inside thereof. An internal container 32 formed by vacuum molding a plastic resin sheet is provided, and a highly viscous liquid 33 such as glue is held inside and sealed with a sealing film 34.

  In the interior container 32, the rib 36 projects so that the opening edge edge engages with the upper part of the opening edge 35 of the housing 31, and the outer peripheral edge of the rib 36 straddles the opening edge 35 portion of the housing 31. A hanging piece 37 is formed in this manner. Similarly, the composite container 30 is covered with a lid portion 38 formed by vacuum molding a thermoplastic resin sheet, and the casing 31, the interior container 32, and the lid portion 38 are packed together by two resin bands 39.

  As shown in FIGS. 5, 6, and 7, the side walls of the interior container 32 of the present invention have an inclination opening angle of 2 degrees or more with respect to the bottom surface. The rounded corners of the four corners are 3 to 6 cm in the same manner as the thickness of the corrugated cardboard forming the casing 31, and the ribs 36 are suspended so as to straddle the opening edge 35 of the casing 31 at all outer peripheral edges of the ribs 36. A piece 37 is formed, and a rib end piece 40 is formed on the end edge of the hanging piece 37 so as to protrude from the side wall outer surface over the entire circumference.

  As shown in FIGS. 5, 6, and 7, the lid portion 38 is formed with an edge 41 that hangs around the entire circumference of the lid portion 38 so as to face the hanging piece 37 of the rib. A locking piece 42 that hooks the end piece 40 protrudes inward. Thereby, the cover part 38 can be covered and covered with the interior container 32. In addition, a recess 49 is formed in the central portion of the lid portion 38 so that the applicator can be stored and can be easily carried by a band 39 crossed in a cross shape. Further, by tightening the lid portion 38 with a band that crosses the cross, the distortion of the casing is reduced, and the groove length of the bending guide is shortened, so that the opening piece 45 is kept open. Even if it does not have a lid holding function, there is also an advantage that the opened state can be held.

  As shown in FIGS. 5, 6, and 7, the lid portion 38 includes a lid opening mechanism that exposes a part of the opening of the interior container. Specifically, the lid portion 38 is provided with a groove 44 that is formed on each of two orthogonal sides of the edge portion 41 and that serves as a bending guide formed on a straight line connecting the respective cut portions 43. By bending a part of the lid portion 38 with the groove 44, the opening piece 45 is opened. As a result, as described above, even when the two bands 39 are tightened, the opening cover piece 45 is opened, and the contained item 33 can be taken out.

  Further, a displacement prevention piece 48 for preventing the displacement of the band 39 is formed on the lid portion 38. That is, when the casing 31, the interior container 32, and the lid portion 38 are fastened with the resin band 39, the resin band 39 passes between a pair of protrusions 48 that are slightly larger than the width of the band formed at the corner of the lid portion 38. As a result of the tightening, the band 39 does not slide and the band 39 is not removed.

It is a side view which shows the structure of one Example of the composite container of this invention. It is sectional drawing of the principal part of FIG. It is a top view of FIG. It is a side view which shows the structure of the state which open | released the opening piece of the composite container of FIG. It is a side view which shows the structure of another Example of the composite container of this invention. It is sectional drawing of the principal part of FIG. FIG. 6 is a plan view of FIG. 5. It is side sectional drawing which shows the structure of the conventional composite container. It is a top view of the container of FIG. 8 which removed the cover part. It is explanatory drawing which shows the structure of the detail enclosed with the circle of FIG. It is a front view of the arrow direction of FIG. It is side sectional drawing which shows the structure of one Example of the improved composite container. It is a top view of the container of FIG. 1 which removed the cover part. It is explanatory drawing which shows the structure of the detail enclosed with the circle of FIG. It is a front view of the arrow direction of FIG.

Explanation of symbols

10 ... Composite container,
11 ... Case,
12 ... interior container,
13: Sealing liquid,
14 ... sealing film,
15 ... Open edge,
16 ... ribs,
17 ...
18 ... the lid,
19 ... Band,
20 ... rib end piece,
21 ... Edge 22 ... Locking piece,
23 ...
24 ... groove,
25 ... Open lid piece,
26 ... notches,
27 ... Incision,
28. Anti-slip piece,
30 ... Composite container,
31 ... Case,
32 ... interior container,
33 ... Sealing liquid,
34 ... sealing film,
35 ... Open edge,
36 ... ribs,
37 ... Drooping piece,
38 ... the lid,
39 ... Band,
40 ... rib end piece,
41 ... Edge 42 ... Locking piece,
43 ...
44 ... groove,
45 ... Open lid piece,
48 ... Anti-slip piece,
49 ... depression,

Claims (7)

An exterior casing having a substantially rectangular cross-section parallel to the bottom surface having rigidity, an interior container having a substantially rectangular bottom surface obtained by vacuum-forming a thermoplastic resin sheet accommodated in the casing, and the interior container In a composite container provided with a lid that covers the opening together with the body,
The entire circumference of the opening edge of the interior container is provided with a rib that hangs down from the exterior housing opening end to the side wall outer surface so as to cover the opening edge of the exterior housing,
A rib end piece is provided at the edge of the rib so as to hang on the outer surface of the side wall over the entire circumference.
The lid portion is formed with an edge portion that is suspended over the entire circumference of the lid portion so as to face the suspended rib, and a locking piece for hooking the rib end piece is formed on the edge portion. A composite container, characterized in that it is protruded from.   The composite container according to claim 1, wherein the outer casing is made of cardboard. The lid includes an opening mechanism that exposes a part of the opening of the interior container,
As the opening mechanism, in order to open an opening piece composed of one side of the substantially rectangular shape of the opening and a part of the both sides, each of the opposing positions of the edge of the lid that covers the sides of the both ends 3. The composite container according to claim 1, further comprising: a cut formed in the groove and a groove serving as a bending guide formed on a straight line connecting the cuts.   4. The composite container according to claim 3, wherein the cut is formed between ½ and 全長 with respect to the total length of each opposing side. The lid portion has an open lid holding function for holding the open state of the open lid piece folded along the groove serving as the folding guide,
As this lid-holding function, a projecting piece formed on the upper surface of the lid piece is an engagement end into which the projecting piece formed on the upper surface of the lid portion is inserted when the lid piece is bent. The composite container according to claim 3, wherein the composite container is provided. The lid includes an opening mechanism that exposes a part of the opening of the interior container,
The opening mechanism is formed on each of the edge portions of the lid portion covering the two sides orthogonal to each other in order to open the opening piece consisting of a part of the two sides substantially orthogonal to each other in a substantially rectangular shape. The composite container according to claim 1, further comprising a cut and a groove serving as a bending guide formed on a straight line connecting the cuts. The composite container according to any one of claims 1 to 6, wherein a displacement prevention piece for preventing displacement of the hanging strap is formed on the lid portion.

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