Lid for packaging container and packaging container

Abstract

To provide a packaging container lid, which is intended for a stationary container body and is stable in a mounted state even when it is opened and closed multiple times, and designed to facilitate stable mounting.SOLUTION: A lid includes: an openable and closable cover portion 11 located on a container body 2; a lid fitting portion 12 that fits in a circumferential direction of the container body 2; a hinge portion 13 located between the cover portion 11 and the lid fitting portion 12; and a cutting portion 14 connecting both ends of the hinge portion 13 so as to surround the cover portion 11.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lid for closing an opening of a container body containing, for example, food, and to a packaging container provided with the lid and the container body. [Background technology]

[0002] Conventionally, packaging containers for food such as fresh produce and prepared foods sold at supermarkets and convenience stores have been provided with a container body for storing food, a lid for closing the opening of the container body, and a hinge for connecting the container body and the lid and for rotating the lid relative to the container body. The hinge was not only formed integrally with the container body and the lid, but also formed as a part of the lid.

[0003] For example, Patent Document 1 discloses a container with a lid in which a plurality of circular recesses are formed on the upper rear surface of the container body, a plurality of circular protrusions are formed on the lower rear surface of the lid, the circular recesses and the circular protrusions are fitted together to connect the lid to the container body, and hinges are formed at the ends of the lid extending in the width direction, allowing the lid, excluding the ends, to be opened and closed freely relative to the container body. That is, the hinges are formed as part of the lid, and when the lid is opened, the circular protrusions at the rear of the lid are fitted into the circular recesses at the rear of the container body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3093200 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in Patent Document 1, there is a risk that the circular protrusion at the rear of the lid may come out of the circular recess at the rear of the container body when the lid is opened and closed repeatedly. That is, the lid fits with the container body only at a position adjacent to the hinge, and the circular protrusion at the rear of the lid that fits into the circular recess at the rear of the container body is displaced by stress from the hinge, which operates the most during opening and closing, and this fitting state is likely to loosen, so that the lid is likely to become unstable when the opening and closing operations are repeated multiple times.

[0006] It is desirable for a lid attached to a container body to be stable and not easily removed, regardless of whether it is opened or closed. In particular, in the case of a packaging container in which a container body containing food or the like is placed in place and a lid having a hinge formed in part is opened and closed, the inventors have come to the conclusion, through much ingenuity, that it is more desirable for the container body and the lid to be attached in a fitting manner over a wide area, not just in the vicinity of the hinge as in Patent Document 1.

[0007] In order to make it easy for anyone to open and close the lid, it is desirable for the hinge formed in part of the lid to be easily bent, and such a structure also makes it easy to realize a structure in which stress from the hinge is not easily transmitted to parts near the hinge. In other words, a hinge that is easily bent but does not easily transmit stress should be formed, and the lid should be designed in a shape that makes it easy to form such a hinge, and for this, the relationship between the lid and the container body should also be taken into consideration.

[0008] Therefore, an object of the present invention is to provide a lid body for a packaging container that is intended for a stationary container body, has a stable installation state even after multiple opening and closing operations, and is designed to make it easy to achieve a stable installation state, as well as a packaging container that is equipped with the lid body and the container body. [Means for solving the problem]

[0009] That is, the lid of the packaging container in the present invention is Cover the opening of Openable and closable Dome-shaped a cover portion and a lid body fitting portion that fits in the circumferential direction of the container body; a lid flange portion formed continuously between the cover portion and the lid fitting portion; and a lid flange portion formed at a position apart from the cover portion and at a position apart from the cover portion. A hinge portion; the above Surrounding the cover the above and a cutting portion connecting both ends of the hinge portion.

[0010] The lid further includes a lid outer end portion formed on the outside and continuous with the lid fitting portion, and the height of the lid outer end portion is preferably equal to the heights of the hinge portion and the cut portion.

[0011] It is desirable that the horizontal tangent to the top of the cover when closed be inclined at an angle of 60° or more when fully open.

[0012] The lid flange portion has a lid first flange portion on the cover portion side and a lid second flange portion on the outer side of the lid first flange portion with the hinge portion and the cut portion as boundaries, and when the cover portion is fully opened, an inclination angle of the lid first flange portion with respect to the lid second flange portion is 60° or more. It is desirable.

[0013] The packaging container of the present invention is characterized by comprising the above-mentioned lid and a container body. Effect of the Invention

[0014] According to the present invention, it is possible to provide a lid body for a packaging container that is intended for a stationary container body, has a stable attached state even after multiple opening and closing operations, and is designed to easily achieve a stable attached state, as well as a packaging container that includes the lid body and the container body. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view of a lid for a packaging container according to one embodiment of the present invention (a) and a perspective view of a container body that fits with the lid (b). [Diagram 2] FIG. [Diagram 3] 3 is an enlarged end view of the lid body fitted to the container body in a closed state at a portion XX shown in FIG. 2. [Figure 4] 3A is an enlarged end view of the YY portion of the lid body fitted to the container body shown in FIG. 2 in a closed state, and FIG. 3B is an enlarged end view of the YY portion of the lid body shown in FIG. 2 in a closed state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, the lid of a packaging container according to one embodiment of the present invention will be described with reference to Figs. 1 to 4. In these figures, when there are a plurality of identical parts, only one part is numbered. For convenience of explanation, certain parts and their leading lines are shown by hidden lines (broken lines) or imaginary lines (two-dot chain lines), and some cross-sectional parts are shown by hatching. In the explanation, terms indicating directions such as upward, downward, lateral, vertical, horizontal, etc. are basically based on the state in which the packaging container equipped with the lid is set in the normal orientation, and when other orientations are used as the basis, they will be explained appropriately.

[0017] <Basic structure of lid 1> 1(a) and 2, a lid 1 for a packaging container (hereinafter also simply referred to as "lid 1") includes a cover portion 11, a lid fitting portion 12, a hinge portion 13, and a cutting portion 14, and further includes a lid outer end portion 15 and a lid flange portion 16. The lid 1 and / or the cover portion 11 has a substantially rectangular shape in a plan view, but may also be a circular or elliptical shape.

[0018] <Container body 2> As shown in FIG. 1(b), the container body 2 is called a tray, for example, and is suitable for use as a stationary type in fresh food sections in retail stores such as supermarkets, or in buffet-style restaurants. The lid 1 is attached to close the opening, and the container body 2 includes a bottom surface 21 on which food is placed, a body side wall 22 provided upward from the peripheral edge of the bottom surface 21, a body flange 23 provided outward from the upper edge of the body side wall 22, and a body fitting portion 24 provided downward from the peripheral edge of the body flange 23. The opening of the container body 2 is formed by the upper edge of the body side wall 22, in other words, the inner peripheral edge of the body flange 23. The shape of the container body 2 in plan view is the same as that of the lid 1, but may be different. The size of the container body 2 may be selected appropriately according to the lid 1.

[0019] In addition, the main body side wall portion 22 has a main body side wall protrusion (not shown) that protrudes inward, and the height of the main body side wall protrusion may be the same as or different from the height of the main body flange portion 23, and the lower end of the cover portion 11 may be in contact with the main body side wall protrusion, and the cover portion 11 may be supported by the main body side wall protrusion. Here, such body side wall protrusions may be formed only at the four corners of the body, or may be formed on some of the sides. This is particularly necessary when the cover fitting portion 12 is formed to fit inside the body fitting portion 24, as described later.

[0020] The specific structure of the lid 1 will be described below with reference to the respective drawings.

[0021] <Cover part 11> As shown in FIG. 1 and FIG. 2, the cover part 11 is located on the container body 2 and can be opened and closed with respect to the opening of the container body 2. The cover part 11 has a cover top surface part 11a and a cover side wall part 11b. The cover part 11 is a rectangular parallelepiped dome shape that bulges upward, and the cover side wall part 11b is formed by expanding obliquely downward from the peripheral edge of the cover top surface part 11a. The cover side wall lower end part 11bu corresponding to the lower end of the cover side wall part 11b has a shape in plan view that is the same as the shape in plan view of the cover part 11, and each side is linear. The cover part 11 has a cover grip part 11c that is hooked or pinched by fingers when opening and closing, and the cover grip part 11c is formed in a concave shape on the cover top surface part 11a and / or the cover side wall part 11b. The cover part 11 is surrounded on the entire circumference by the hinge part 13 and the cutting part 14.

[0022] The cover part 11 may be in contact with or bear a load on the container body 2, in other words, may be supported by the container body 2. The cover part 11 may be a hemispherical dome shape, or may be a dome shape that bulges downward. In this case, the cover side wall part 11b may have a lid body first side wall part not numbered and provided extending upward from the peripheral edge of the cover top surface part 11a, and a lid body second side wall part provided extending downward from the upper edge of the lid body first side wall part. The cover side wall part 11b may be formed as a lid body fitting part 12.

[0023] <Lid fitting portion 12> 2 and 3, the lid fitting parts 12 are formed to fit in the circumferential direction of the container body 1, and are formed to fit externally to the body fitting part 24. The lid fitting parts 12 are positioned lower than the cover part 11, and are formed integrally and continuously with the cover part 11 via the lid flange part 16. The lid fitting parts 12 are formed in a convex shape that protrudes inward, and are formed in the circumferential direction at predetermined intervals. Here, the lid fitting portion 12 may be formed only at the four corners, or may be formed around the entire circumference, or may be formed over, for example, 50% or more of the entire circumference, or over 80% or more.

[0024] The lid fitting portion 12 may be formed so as to fit into the main body fitting portion 24, and may be formed in the circumferential direction and over the entire circumference. The lid fitting portion 12 may be formed as a part of the cover side wall portion 11b. Here, when the hinge portion 13 and the cutting portion 14 are formed between the lid first flange portion 16a and the lid second flange portion 16b as described below, outer fitting is preferable to inner fitting from a design standpoint.

[0025] <Hinge part 13> 1, 2, and 4, the hinge portion 13 is an opening / closing axis of the cover portion 11, and is located between the cover portion 11 and the lid fitting portion 12, and is located outside the cover portion 11 and inside the lid fitting portion 12, adjacent to the cover portion 11 and the lid fitting portion 12, and is closest to the cover side wall lower end portion 11bu. The hinge portion 13 is linear, parallel to one of the short sides of the cover side wall lower end portion 11bu and has approximately the same length. The hinge portion 13 is formed in the lid flange portion 16, and is composed of one or more cut portions (slits) of a predetermined width machined at predetermined intervals in the lid flange portion 16. The hinge portion 13 is a predetermined distance away from the short side of the cover side wall lower end portion 11bu, and the ratio of the distance from the cover side wall lower end portion 11bu to the hinge portion 13 and the distance from the cover side wall lower end portion 11bu to the outer edge of the lid flange portion 16 is 1:5 to 5:1. Here, the distance between the cover side wall lower end 11bu and the hinge portion 13 is not particularly limited, but may be 5 to 15 mm, 6 to 10 mm, or 6.5 to 9 mm.

[0026] The hinge portion 13 may be a perforation in which cut and uncut portions of approximately the same width are continuous, may be formed on the cover side wall lower end portion 11bu, or may be formed by simply bending the lid flange portion 16. The hinge portion 13 may be shorter or longer than the length of the short side of the cover side wall lower end portion 11bu, and may be formed parallel to one of the long sides of the cover side wall lower end portion 11bu. The hinge portion 13 is not limited to the lid flange portion 16, and may be formed on the cover top surface portion 11a, for example, as long as it is formed on the inside of the lid fitting portion 12. Such perforations may be formed by alternating cut portions and non-cut portions, and for example, the non-cut portions may be 1 to 5 mm in size and the cut portions may be 10 to 50 mm in size.

[0027] <Cut section 14> 1 to 3, the cut portion 14 is a slit (cut) that separates the cover portion 11 from the lid fitting portion 12 so as to be freely opened and closed, and connects the hinge ends 13a, 13a corresponding to both ends of the hinge portion 13 so as to surround the cover portion 11. The cut portion 14 is located between the cover portion 11 and the lid fitting portion 12, is located outside the cover portion 11 and inside the lid fitting portion 12, is adjacent to the cover portion 11 and the lid fitting portion 12, and is closest to the cover side wall lower end portion 11bu. The cut portion 14 is formed in the lid flange portion 16. The cut portion 14 is a predetermined distance away from the short side of the cover side wall lower end 11bu, and the ratio of the distance from the cover side wall lower end 11bu to the cut portion 14 to the distance from the cover side wall lower end 11bu to the outer edge of the lid flange portion 16 is 1:5 to 5:1, and may be the same as or different from the above ratio in the hinge portion 13.

[0028] The cut portion 14 has non-cut portions 14a, 14a on the short side opposite to the hinge portion 13. That is, the cut portion 14 is cut leaving the non-cut portions 14a, 14a, and the hinge ends 13a, 13a are connected after the non-cut portions 14a, 14a are cut. According to this configuration, the non-cut portions 14a, 14a temporarily fix the cover portion 11, so that it is expected to be effective in avoiding damage to the cover body 1 and the cover portion 11 that is likely to occur when the cover body 1 is stacked or transported. The length of such non-cut portions may be, for example, 0.1 to 1.5 mm, 0.2 to 1.2 mm, or 0.3 to 1 mm.

[0029] The cut portion 14 may be a perforation in which non-cut portions of the same width and formed at a predetermined interval are continuous. The cut portion 14 may be formed at the lower end portion 11bu of the cover side wall. There may be one or three or more non-cut portions 14a formed at a predetermined interval, and they may be formed on the long side perpendicular to the hinge portion 13. The cut portion 14 is not limited to the lid flange portion 16, and may be formed on the cover top surface portion 11a, for example, as long as it is formed on the inside of the lid fitting portion 12.

[0030] In this way, the lid body 1 is equipped with a cover portion 11 located on the container body 2 that can be opened and closed freely, a lid body fitting portion 12 that fits circumferentially around the container body 2, a hinge portion 13 located between the cover portion 11 and the lid body fitting portion 12, and a cutting portion 14 that connects both ends of the hinge portion 13 so as to surround the cover portion 11.Therefore, when the lid body fitting portion 12 is fitted into the container body 2, the cover portion 11 can be opened and closed freely around the hinge portion 13 within the range of the cutting portion 14, so that it is expected that the contents of the container body 2 can be easily removed via the cover portion 11 without removing the lid body 1 from the container body 2. In other words, since the lid body fitting portion 12 is fitted around the entire circumference of the container body 2 and the hinge portion 13 is formed integrally with the cover portion 11 and the lid body fitting portion 12, even if the cover portion 11 is opened and closed frequently or roughly opened and closed with one hand, the lid body fitting portion 12 is unlikely to come off the container body 12, and since the cover portion 11 is connected to the lid body fitting portion 12 via the hinge portion 13, stable opening and closing operations can be expected.

[0031] <Lid outer end 15> 2 to 4, the lid outer end 15 is formed on the outer side and around the entire periphery, continuing from the lid fitting portion 12, and is formed to expand upward from the outer edge of the lid fitting portion 12, and has a flat lid outer end upper end 15a of a predetermined width. The position of the lid outer end upper end 15a, which corresponds to the height of the lid outer end 15, is the same as the height of the hinge portion 13 and the cutting portion 14, in other words, the lid outer end upper end 15a, the hinge portion 13, and the cutting portion 14 are located on the same horizontal plane.

[0032] According to this configuration, the height of the lid outer end 15 is aligned with the height of the hinge portion 13 and the cut portion 14, which makes it easier to perform the cutting process for forming the cut portion 14, and is expected to improve overall production efficiency. That is, since the lid outer end upper end 15a can be fixed during the cutting process of the cut portion 14, it is easier to determine the positions and orientations of the hinge portion 13 and the cut portion 14, and it is expected to have the effect of avoiding cutting errors and positional deviations.

[0033] One or more reinforcing ribs (not shown or numbered) may be formed on the inside and / or outside of the lid outer end 15. The reinforcing ribs may be vertical and have a predetermined width from the bottom of the lid outer end 15 toward the lid outer upper end 15a, and two or more reinforcing ribs may be formed at predetermined intervals in the horizontal direction parallel to the lid outer upper end 15a, or one or more reinforcing ribs may be horizontal and have a predetermined width parallel to the lid outer upper end 15a from the bottom of the lid outer end 15 toward the lid outer upper end 15a.

[0034] As shown in FIG. 4, when the cover part 11 is closed, the horizontal tangent 11dh of the cover top part 11d corresponding to the top of the cover part 11 is inclined at 60 to 90° when the cover part 11 is fully open. In other words, when the cover part 11 is fully open, the inclination angle D1 between the horizontal tangent 11dh and the horizontal line is 60 to 90°. That is, the hinge part 13 is formed between the cover part 11 and the lid fitting part 12, and is formed at a position away from the cover part 11, so that the inclination angle D1 is 60 to 90°. The fully open state of the cover part 11 corresponds to a state in which the corner parts of the cover side wall part 11b and the cover top surface part 11a are in contact with the lid outer end upper end part 15a. The ratio of the distance from the cover side wall lower end part 11bu to the hinge part 13 and the distance from the hinge part 13 to the outer edge of the lid outer end upper end part 15a is 1:5 to 5:1.

[0035] This configuration is expected to have the effect of making it easier to maintain the cover part 11 in a fully open state so that the contents of the container body can be easily removed. That is, the cover part 11 does not open too much because the outer upper end 15a of the lid body serves as a stopper, the lid body 2 does not tilt too much compared to an inclination angle of less than 60°, and it is more difficult to close due to external forces such as its own weight, elasticity, and vibration compared to an inclination angle of more than 90°. Therefore, not only is the cover part 11 less likely to be an obstacle to removing the contents, but the purchaser can be expected to have the effect of being able to reliably and easily close the cover part 11 at the desired timing.

[0036] <Lid flange part 16> 1 and 2, the lid flange 16 is flat, formed continuously between the cover 11 and the lid fitting portion 12, formed in the circumferential direction and all around the cover 11, formed outward from the cover side wall lower end 11bu, located lower than the cover 11, and facing the main body flange 23 in the closed state. The width of the lid flange 16 is wider on the short side where the hinge 13 is formed than on the long side where the cutting portion 14 is formed, but may be narrower or the both may be equal as long as it does not interfere with opening and closing of the lid 2.

[0037] The lid flange portion 16 has a lid first flange portion 16a on the cover portion 11 side, and a lid second flange portion 16b on the outer side of the lid first flange portion 16a with the hinge portion 13 and the cut portion 14 as boundaries. In other words, the hinge portion 13 and the cut portion 14 are formed between the lid first flange portion 16a and the lid second flange portion 16b, and the lid first flange portion 16a and the lid second flange portion 16b are partially connected via the hinge portion 13 and the non-cut portion 14a. The ratio of the width of the lid first flange portion 16a to the width of the lid second flange portion 16b is most preferably 1:1, may be 1:4 to 4:1, and may vary depending on the above ratio at the hinge portion 13 and the cut portion 14.

[0038] This configuration makes it easy to determine the positions for forming the hinge portion 13 and the cut portion 14, and is expected to have the effect of easily forming them simply by cutting the lid flange portion 16 from above. Also, since only the cover portion 11 side from the lid first flange portion 16a can be opened and closed freely around the hinge portion 13 as an axis, and the cover portion 11 can be supported on the main body flange portion 23 via the lid first flange portion 16a when the lid is closed, it is easy to stabilize the position of the cover portion 11 both when the lid is fully open and when it is closed, and it is expected to have the effect of preventing gaps due to unexpected opening of the lid or misalignment.

[0039] The lid flange portion 16 may be at the same height as the cover top surface portion 11a or at a higher position. In this case, it may be provided outward from the upper end edge of the cover side wall portion 11b. With respect to the lid flange portion 16, the hinge portion 13 and / or the cut portion 14 may be located outside of the approximate center in the width direction (short direction) of the main body flange portion 23. In other words, the width of the lid first flange portion 16a may be wider than the width of the lid second flange portion 16b. According to this configuration, the contact area with the main body flange portion 23 of the lid first flange portion 16a is wider than that of the lid second flange portion 16b, so that the effect of making it difficult for the cover portion 11 to fall into the container main body 2 can be expected.

[0040] The lid flange portion 16 may have dot-shaped embossments, through holes, or wavy uneven portions (not shown or numbered), and these are preferably formed at least near the end face of the lid first flange portion 16a that appears after the cut portion 14 is cut, in other words, it is preferable that at least the end face of the lid first flange portion 16a appears wavy after the cut portion 14 is cut, and this configuration is expected to prevent cuts on the end face of the lid first flange portion 16a that corresponds to the cut face of the cut portion 14. Here, the height difference between the upper end and the lower end that form the end face is 0.01 to 3 mm, preferably 0.05 to 2.5 mm, and more preferably 0.1 to 1.5 mm.

[0041] As shown in FIG. 4(b), when the lid body 2 is fully open, the inclination angle D2 of the lid body first flange portion 16a relative to the lid body second flange portion 16b may be 60° or more, and may be equal to or different from the inclination angle D1.

[0042] <Specifications of the container body 2 such as the forming method, material, dimensions, etc.> The container body 2 may be formed by thermoforming a synthetic resin sheet, for example, by sheet molding such as vacuum molding, hot plate pressure molding, vacuum pressure molding, double-sided vacuum molding, etc. The synthetic resin sheet may be formed of a single-layer or multi-layer sheet made of, for example, a polyester resin such as polyethylene terephthalate, an olefin resin such as polyethylene or polypropylene, or a polystyrene resin, and may be colored, colorless, transparent, or opaque. Furthermore, the front and / or back surface of the synthetic resin sheet may be covered with a synthetic resin film, and if the front surface is covered, printing may be performed. The synthetic resin sheet may be made of foamed resin or non-foamed resin. There is no particular limit to the thickness of the synthetic resin sheet, but if it is made of a non-foamed resin, it may be 0.2 to 0.45 mm, preferably 0.23 to 0.4 mm, and more preferably 0.23 to 0.3 mm. If it is made of a low-foamed resin with an expansion ratio of 1.5 to 3 times, it may be 0.5 to 3 mm, and preferably 1 to 2 mm. In the case of a highly expanded resin with an expansion ratio of 5 to 15 times, the thickness may be 1.5 to 5 mm, preferably 2 to 4 mm, and more preferably 2.5 to 3.5 mm. The expansion ratio is calculated by measuring the specific volume (unit: cc / g) of the foamed composition before expansion and the foamed sheet after expansion, and dividing the specific volume after expansion by the specific volume before expansion. Here, there is no particular limitation on the size of the container body, but it may be, for example, 200 to 500 mm in width and 350 to 600 mm in depth.

[0043] <Specifications for the method of forming the lid 1, materials, dimensions, etc.> The cover 1 may be formed by thermoforming a synthetic resin sheet, for example, by sheet molding such as vacuum molding, hot plate pressure molding, vacuum pressure molding, double-sided vacuum molding, etc. The synthetic resin sheet may be formed of a single-layer or multi-layer sheet made of, for example, a polyester resin such as polyethylene terephthalate, an olefin resin such as polyethylene or polypropylene, or a polystyrene resin such as biaxially oriented polystyrene (OPS; Oriented Polystyrene), and is preferably colorless and transparent, but may be colored or opaque. Furthermore, the front and / or back surface of the synthetic resin sheet may be covered with a synthetic resin film, and if the front surface is covered, printing may be performed. The synthetic resin sheet may be made of foamed or non-foamed resin, but in the present invention, the desired effect is more likely to be obtained with a non-foamed resin. There is no particular limit to the thickness of the synthetic resin sheet, but it may be 0.2 to 0.45 mm, preferably 0.23 to 0.4 mm, and more preferably 0.23 to 0.3 mm. In the present invention, the cover 1 is preferably made of polyethylene terephthalate in view of transparency and the design flexibility of the perforations as the hinge portion. Furthermore, there is no particular limit to the size of the lid 1, but it may be, for example, 200 to 500 mm in width and 350 to 600 mm in depth.

[0044] <Examples of how to use packaging containers> As shown in FIG. 1, after food is placed in the container body 2, the lid body fitting portion 12 is externally fitted into the body fitting portion 24 to attach the lid body 1 to the container body 2. Next, the non-cut portions 14a scattered along the cut portion 14 are cut to release the cover portion 11 from the lid body fitting portion 12. Then, the cover knob portion 11c is pinched and the cover portion 11 is opened around the hinge portion 13 until the cover side wall portion 11b contacts the lid body outer end portion 15. After that, after the food is removed from the container body 2, the cover knob portion 11c is pinched to close the cover portion 11, but it is also possible to hook the cover knob portion 11c on a finger or press the cover top surface portion 11a and close the cover portion 11 by its own weight or elasticity.

[0045] The lid and container body shown in this embodiment are not limited to the above, and include the positions, shapes, and dimensions of all parts and relationships between parts as long as the same effects are obtained. [Explanation of symbols]

[0046] 1 Lid 11 cover portion, 11a cover top surface portion, 11b cover side wall portion, 11bu cover side wall lower end portion, 11c cover knob portion, 11d cover top portion, 11dh horizontal tangent line 12 Lid fitting portion 13 hinge portion, 13a hinge end portion 14 Cut section, 14a Uncut section 15 Outer edge of the lid, 15a Top edge of the outer edge of the lid 16: lid flange portion, 16a: lid first flange portion, 16b: lid second flange portion 2 Container body 21 Bottom part 22 Main body side wall 23 Body flange 24 Body fitting part

Claims

1. A dome-shaped cover that can be opened and closed to cover an opening on the container body; A lid fitting portion that fits in the circumferential direction of the container body; a lid flange portion formed continuously between the cover portion and the lid fitting portion; a hinge portion formed on the lid flange portion at a position separated from the cover portion; a cut portion connecting both ends of the hinge portion so as to surround the cover portion, The lid flange portion is A lid first flange portion on the cover portion side; a second lid flange portion that is located outside the first lid flange portion with the hinge portion and the cut portion as boundaries, When the cover is fully open, the inclination angle of the first flange portion of the lid body relative to the second flange portion of the lid body is 60° or more. A lid for a packaging container.

2. A lid outer end portion formed on the outside and continuous with the lid fitting portion, The height of the outer end of the lid is equal to the height of the hinge and the cutout. The lid for a packaging container according to claim 1 .

3. The horizontal tangent to the top of the cover when closed is tilted at an angle of 60° to 90° when fully open.

3. A lid for a packaging container according to claim 1 or 2.

4. A container comprising the lid body according to any one of claims 1 to 3 and a container body. A packaging container characterized by:

Images