WO2020045309A1

WO2020045309A1 - Container with cover

Info

Publication number: WO2020045309A1
Application number: PCT/JP2019/033163
Authority: WO
Inventors: 雅子土田; 加戸　卓; 李子高垣; 亀田　克巳
Original assignee: 大日本印刷株式会社
Priority date: 2018-08-28
Filing date: 2019-08-23
Publication date: 2020-03-05
Also published as: CN112601704B; CN112601704A

Abstract

[Problem] To provide a container that is provided with a cover and that minimizes leakage of content therefrom. [Solution] This container provided with a cover has: a container that has a body part which includes a bottom section and a lateral section and which defines a storage part, and a flange part which is provided contiguously to the upper portion of the lateral section so as to encircle the storage part and which includes a flat section and a grooved section located closer to the bottom side than the flat section and extending from an inner edge which is the edge of the flange part on the side of the storage part, toward an outer edge which is the edge disposed on the side opposite to the inner edge of the flange part; a cover that covers the grooved section and the storage part of the container; and a closure sealing part that is for joining the cover with the top surface of the flat section of the flange part of the container and that includes a projecting seal section, wherein the closure sealing part has a grooved section-side edge that at least surrounds the grooved section, the grooved section-side edge has an inner edge-side end and an outer edge-side end that are disposed on the inner edge side and the outer edge side, respectively, as viewed in the extension direction of the grooved section.

Description

Container with lid

The present invention relates to a container with a lid.

Conventionally, many containers with lids, which contain fluid contents such as liquids and powders in plastic containers and are sealed with a lid made of a film or the like, have been on the market. Among such containers with lids, particularly small ones are also called potions, potion containers or potion cups. Small lidded containers are used to store various contents such as gum syrup, coffee fresh, seasonings, and concentrated beverages.

As one form of a lidded container, for example, as disclosed in Patent Document 1, an external force is applied to the bottom and sides of the container to deform the container, thereby increasing the pressure inside the container and thereby closing the container. There is known a type in which a seal portion is configured to be partially separated. According to such a container with a lid, the contents can be taken out, for example, by pressing the side and the bottom of the container with one hand to separate the closing seal portion. For this reason, the contents can be easily taken out as compared with a type of container with a lid that requires the lid to be removed with the other hand while holding the container with one hand. Further, it is possible to prevent the contents from being attached to the hand when separating the closing seal portion. Further, as disclosed in Patent Document 1, by setting a container with a lid containing a concentrated beverage in a device such as a diluted beverage producing device, and pressing the bottom and side portions of the container using the device. It is also possible to produce a beverage of a desired concentration.

In the container with a lid disclosed in Patent Literature 1, a part of an annular closing seal portion for joining the lid to a flange portion of the container has a protruding seal portion protruding radially inward of a container housing portion. It has become. In this case, when the pressure inside the container rises, the projecting seal will separate before the rest of the closure seal. For this reason, the user can predict from which position of the storage unit the contents are easily discharged.

JP-A-2005-9051

If the bottom or side of the container is pressed unintentionally, the protruding seal may separate from the flange at an unintended timing and the contents may leak.

An object of the present invention is to provide a container with a lid that can effectively solve such a problem.

The present invention includes a trunk portion including a bottom portion and a side portion and defining a housing portion, and a flange portion continuously provided at an upper portion of the side portion so as to surround the housing portion, wherein the flat portion, the flat portion, Part is located on the bottom side than the portion, from the inner edge that is the edge of the flange portion on the housing portion side, toward the outer edge that is the edge on the opposite side to the inner edge of the flange portion, the inner edge and the outer edge A container having a groove portion extending so as not to reach the container, a lid that covers the housing portion and the groove portion of the container, and the lid so as to seal the housing portion and the groove portion from the outside. A closing seal portion joined to an upper surface of the flat portion of the flange portion of the container, wherein the projecting seal portion is located between the groove portion and the housing portion and projects toward the housing portion of the container. A closure seal portion comprising: Has at least a groove side edge surrounding the groove, and the groove side edge is, when viewed in the direction in which the groove extends, an inner edge side end located on the inner edge side and an outer edge side located on the outer edge side. And a container having an end.

In the lidded container according to the present invention, the flange portion, between a portion overlapping the inner edge portion and a portion overlapping the outer edge portion, includes the flange portion in a direction intersecting a direction in which the groove extends. A fragile portion for breaking may be provided.

In the container with a lid according to the present invention, the fragile portion may be provided in at least the groove portion of the flange portion, and may break the groove portion in a direction intersecting a direction in which the groove portion extends.

In the lidded container according to the present invention, the fragile portion may be provided on the flange portion so as to straddle the groove portion and the flat portion.

In the container with a lid according to the present invention, the fragile portion may include a half cut provided on a lower surface side of the flange portion.

In the container with a lid according to the present invention, the lid may have easy tearability in a direction in which the fragile portion extends at least in a portion overlapping the fragile portion.

In the lidded container according to the present invention, the tensile strength of the lid in the direction in which the fragile portion extends may be greater than the tensile strength of the lid in a direction perpendicular to the direction in which the fragile portion extends.

In the lidded container according to the present invention, the fragile portion extends to reach the outer edge of the flange portion while straddling the groove portion and the flat portion, and extends to a portion of the outer edge of the flange portion where the fragile portion reaches. May be provided with a notch.

In the container with a lid according to the present invention, the volume of the groove may be 1% or more of the volume of the housing.

In the container with a lid according to the present invention, the side portion of the container is provided with a concave portion that is recessed toward the accommodation portion, and the protruding seal portion is configured such that when viewed along the up-down direction, It may be located at least partially within said recess on the side.

According to the present invention, when the projecting seal portion separates from the flange portion at an unintended timing, leakage of the contents from the container can be suppressed.

It is a top view showing a container with a lid in a 1st embodiment of the present invention. It is a bottom view showing the container with a lid in a 1st embodiment of the present invention. FIG. 3 is a front view showing a case where the container with a cover in FIG. 1 is viewed along an arrow III. FIG. 4 is a side view showing a case where the container with a lid in FIG. 1 is viewed along an arrow IV. FIG. 5 is a longitudinal sectional view showing a case where the container with a lid of FIG. 3 is cut along a line VV. FIG. 6 is a cross-sectional view showing a case where the lidded container of FIG. 3 is cut along a line VI-VI. It is a top view which expands and shows the protrusion seal part of the closure seal part of the container with a cover of FIG. It is a perspective view which shows a mode that a pressing force is applied to the bottom part of a container. It is a perspective view which shows the container deformed based on the pressing force. It is a figure showing signs that an opening was formed in a slot. It is a top view showing the 1st modification of a 1st embodiment of a container. It is a bottom view showing the 1st modification of a 1st embodiment of a container. It is a top view showing the 2nd modification of a 1st embodiment of a container. It is a bottom view showing the 2nd modification of a 1st embodiment of a container. It is a longitudinal section showing the 2nd modification of a 1st embodiment of a container. It is a figure showing the use method of the container concerning the 2nd modification of a 1st embodiment. It is a figure showing the use method of the container concerning the 2nd modification of a 1st embodiment. It is a top view showing the 3rd modification of a 1st embodiment of a container. It is a bottom view showing the 3rd modification of a 1st embodiment of a container. It is a longitudinal section showing the 3rd modification of a 1st embodiment of a container. It is a top view showing the 4th modification of a 1st embodiment of a container. It is a top view showing the 4th modification of a 1st embodiment of a container. It is a top view showing the sheet fabrication container by a 2nd embodiment. FIG. 24 is a vertical cross-sectional view (a cross-sectional view taken along line XXIV-XXIV of FIG. 23) illustrating the sheet-formed container according to the second embodiment. It is a top view showing a container with a lid manufactured using a sheet fabrication container by a 2nd embodiment. FIG. 26 is a vertical sectional view (a sectional view taken along line XXVI-XXVI of FIG. 25) showing a container with a lid manufactured using the sheet molded container according to the second embodiment. It is an outline sectional view showing the manufacturing method of the sheet fabrication container by a 2nd embodiment. It is a figure showing a half cut device. It is a figure which shows the process of forming a half cut line in a sheet molding container by a half cut device. It is a schematic plan view which shows the effect | action when adjusting the position of the accommodation part of a sheet molding container. It is an outline sectional view showing a manufacturing method of a container with a lid. It is a vertical sectional view showing a modification of a bent part of a 2nd embodiment. It is a vertical sectional view showing a modification of a bent part of a 2nd embodiment. It is a vertical sectional view showing a modification of a bent part of a 2nd embodiment. It is a top view showing the modification of the sheet molding container of a 2nd embodiment.

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, the entire container 10 with a lid according to the first embodiment will be described with reference to FIGS. FIG. 1 is a plan view showing the case where the lidded container 10 is viewed from the lid 50 side, and FIG. 2 is a bottom view showing the case where the lidded container 10 is viewed from the bottom 22 side of the container 20. FIG. 3 is a front view showing a case where the lidded container 10 of FIG. 1 is viewed along an arrow III. FIG. 4 is a front view showing a case where the lidded container 10 of FIG. 1 is viewed along an arrow IV. FIG. FIG. 5 is a longitudinal sectional view showing a case where the lidded container 10 of FIG. 3 is cut along the line VV.

(Container with lid)
The container 10 with a lid includes the container 20 in which the storage portion 16 is formed, a lid 50 that covers the storage portion 16 of the container 20, and a closing seal portion 30 that joins the lid 50 to the container 20. In FIG. 1, the container 20 covered by the lid 50 and its components are indicated by dotted lines. Reference symbol C represents a center point of the storage unit 16. The center point C is the center of gravity of the housing 16 and is defined in the first embodiment as the center of a circle that is virtually drawn so as to circumscribe the outer edge of the housing 16 in plan view.

(container)
Next, the container 20 will be described. As shown in FIGS. 1 to 5, the container 20 includes a bottom portion 22 and a side portion 23, and is connected to a body portion 21 that defines the storage portion 16 and is connected to an upper portion of the side portion 23 so as to surround the storage portion 16. And a flange portion 27 formed. The side portion 23 is a portion erected from the bottom portion 22 so as to extend over the entire circumference along the outer edge of the bottom portion 22. The thickness T3 of the bottom 22 is, for example, not less than 30 μm and not more than 400 μm. The thickness T4 of the side portion 23 is, for example, not less than 20 μm and not more than 300 μm. The flange portion 27 is connected to the upper portion of the side portion 23 so as to surround the housing portion 16 and extends outward in the horizontal direction. The above-described lid 50 is joined to the flange 27 of the container 20. In this specification, terms such as “side”, “upper”, “upper surface”, “lower surface”, “vertical direction”, and “horizontal direction” refer to lids such that the bottom 22 of the container 20 is located below. The position and direction of the lidded container 10, the container 20, the lid 50, and the components thereof are shown based on the state where the container 10 and the container 20 are placed.

FIGS. 1 to 5 show an example in which the bottom portion 22 and the side portions 23 of the container 20 are configured such that the storage portion 16 has a substantially circular contour in plan view. However, the shape of the container 20 is not particularly limited as long as desired contents can be stored in the container 20. For example, the contour of the bottom portion 22 and the contours of the flange portion 27 and the lid 50 may or may not be similar.

(4) The contents contained in the container 20 are not particularly limited as long as they have fluidity such as a liquid, a viscous body, and a powder. Note that the container 10 with a lid shown in FIGS. 1 to 5 is capable of partially peeling off the lid 50 from the flange portion 27 of the container 20 by pressing the side portion 23 and the bottom portion 22 of the container 20 with one hand. It has one feature. For this reason, in the case of the container 10 with a lid shown in FIGS. 1 to 5, it is preferable that the contents are contained and used in a container 20 having a small capacity that can be pressed with one hand. For example, foods such as gum syrup, coffee fresh, seasonings and concentrated beverages, or contents such as cosmetics such as shampoos, treatments and emulsions are preferably contained in the container 20. The contents may be a kinematic viscous body. The filling rate of the content contained in the container 20 is, for example, 60% or more. The small-capacity container 20 means that the size of the storage section 16 in plan view is 60 mm or less, and more preferably 40 mm or less.

(Flange part)
The flange 27 of the container 20 will be described. As shown in FIGS. 1 and 2, the flange portion 27 has an inner edge 272 which is an edge of the flange portion 27 on the housing portion 16 side, and an outer edge 271 which is an edge on the opposite side to the inner edge 272 of the flange portion 27. . In the example shown in FIGS. 1 and 2, the inner edge 272 has an arc portion 272a extending in an arc shape and an inner protruding portion 272x protruding inward from the arc portion. The central angle of the arc portion 272a is, for example, not less than 240 ° and not more than 340 °, and is approximately 320 ° in the example shown in FIGS. The outer edge 271 has a parallel portion 271a extending substantially parallel to the inner edge 272, and an outer protruding portion 271y protruding outward from the parallel portion 271a.

The “inside” is the side facing the center point C when the container 10 with the lid is viewed along the normal direction of the upper surface of the flange portion 27. The “outside” is a side from the center point C toward the flange portion 27 when the container 10 with the lid is viewed along the normal direction of the upper surface of the flange portion 27. In the following description, the direction of the normal to the upper surface 274 of the flange 27 is also referred to as the “vertical direction”. Viewing along the vertical direction is also referred to as plan view.

フランジ As shown in FIGS. 1 and 5, the flange portion 27 has a flat portion 273 and a groove portion 29 located closer to the bottom portion 22 than the flat portion 273. The above-described lid 50 is joined to the flat portion 273. Note that the flat portion 273 may include a portion that is not joined to the lid 50. The portion of the flat portion 273 joined to the lid 50 and the portion not joined to the lid 50 are located on the same plane. The thickness T5 of the flat portion 273 of the flange portion 27 is, for example, not less than 150 μm and not more than 700 μm.

(Groove)
The groove 29 will be described in detail. The groove 29 extends from the inner edge 272 of the flange 27 to the outer edge 271 so as not to reach the inner edge 272 and the outer edge 271. In the example shown in FIGS. 1 and 2, the groove portion 29 is located between the inner protruding portion 272 x of the inner edge 272 of the flange portion 27 and the outer protruding portion 271 y of the outer edge 271. Preferably, the groove 29 overlaps a virtual straight line Lc connecting the center point C and the tip of the inner protruding portion 272x in a plan view. Preferably, the groove 29 extends along a virtual straight line connecting the center point C and the tip of the outer protruding portion 271y in plan view.

The groove 29 can function as a buffer for receiving the contents when the contents leak from the storage section 16 due to the unintended separation of the closing seal section 30. The volume of the groove 29 is preferably at least 1% of the volume of the housing 16.

As described later, a part of the groove 29 is broken at a fragile portion described later when the user opens the lidded container 10. In order to appropriately cause breakage, the thickness T6 of the groove 29 shown in FIG. 5 is preferably 100 μm or more. The thickness T6 of the groove portion 29 may be larger than the thickness T3 of the bottom portion 22 and the thickness T4 of the side portion 23. The thickness T6 of the groove 29 is, for example, 700 μm or less.

As shown in FIGS. 1, 2, 4, and 5, at least the groove portion 29 of the flange portion 27 is provided with a fragile portion 40 for breaking the groove portion 29 in a direction intersecting the direction in which the groove portion 29 extends. Have been. The fragile portion 40 is a portion configured to be easily broken compared to other portions of the flange portion 27. The form of the break generated in the fragile portion 40 is arbitrary. For example, the fracture may be caused by tearing the flange portion 27 at the fragile portion 40, or the fracture may be caused by bending the flange portion 27 at the fragile portion 40.

In the example shown in FIGS. 1 and 2, the fragile portion 40 extends so as to straddle the groove 29 and the flat portion 273 in a direction intersecting the direction in which the groove 29 extends. The fragile portion 40 may or may not reach the outer edge 271 of the flange portion 27.

構造 The structure of the fragile portion 40 is not particularly limited as long as the flange portion 27 can be broken in a direction intersecting the direction in which the groove 29 extends. The weak portion 40 in the first embodiment includes a half cut provided on the lower surface side of the flange portion 27, as shown in FIG. The depth of the half cut of the fragile portion 40 is, for example, 50% or more of the thickness T6 of the groove portion 29. When the thickness T6 of the groove 29 is 0.6 mm, the half cut depth is, for example, 0.3 mm.

(side)
The side 23 of the container 20 will be described. As shown in FIGS. 1 and 2, the side portion 23 of the container 20 may be provided with a concave portion 24 that is recessed toward the accommodation portion 16. The concave portion 24 has a shape corresponding to the inner protruding portion 272x of the inner edge 272 of the above-described flange portion 27 in plan view.

The recess 24 will be described in detail. As shown in FIG. 3, the concave portion 24 includes a pair of base portions 25 and a deepest portion 26 extending from the flange portion 27 toward the bottom portion 22. The recess 24 extends from the flange 27 to the bottom 22 as shown in FIGS. The deepest portion 26 is a portion of the concave portion 24 that protrudes most toward the housing portion 16 (center point C side). In the example shown in FIGS. 1 and 2, the concave portion 24 includes an arc-shaped portion in plan view. The radius of curvature of the arc-shaped portion is, for example, 3 mm or more and 20 mm or less.

(Closed seal part)
Next, the closing seal portion 30 will be described. As shown in FIG. 1, the closing seal portion 30 is an annular seal portion extending continuously over one circumference so as to surround the accommodation portion 16 of the container 20 in plan view. The closing seal portion 30 is located between the upper surface 274 of the flat portion 273 of the flange portion 27 of the container 20 and the lower surface of the lid 50. The lower surface of the lid 50 is joined to the upper surface 274 of the flat portion 273 of the flange portion 27 of the container 20 by the closing seal portion 30. In this specification, “joining” is a concept including both welding and adhesion. “Welding” means that the closure seal portion 30 is configured by at least partially melting at least one of the container 20 and the lid 50. The term “adhesion” means that the closing seal portion 30 is formed by a component such as an adhesive that is separate from the container 20 and the lid 50. In the plan views or bottom views of FIGS. 1 and 2 and FIG. 7 described below, the closing seal portion 30 is hatched.

溝 As described above, the groove 29 of the flange 27 is located closer to the bottom 22 than the flat part 273. For this reason, the lower surface of the lid 50 is not joined to the groove 29. That is, between the lid 50 and the groove 29 is a non-seal portion where the closed seal portion 30 is not formed.

As shown in FIG. 1, the closed seal portion 30 extending annularly so as to surround the housing portion 16 and the groove portion 29 includes a main seal portion 31 and a projecting seal portion 34. The protruding seal portion 34 is a seal portion of the closing seal portion 30 that is located between the groove portion 29 of the flange portion 27 and the housing portion 16 in a plan view and protrudes toward the housing portion 16. In the first embodiment, the projecting seal portion 34 is at least partially located in the concave portion 24 of the side portion 23 of the container 20 when viewed along the vertical direction D1. For example, the protruding seal portion 34 includes a tip portion located in the concave portion 24 when viewed along the up-down direction D1. The main seal portion 31 is a seal portion other than the protruding seal portion 34 in the closed seal portion 30, and is provided along the inner edge 272 of the flange portion 27 in the first embodiment.

内 The inner edge of the main seal portion 31 and the inner edge of the protruding seal portion 34 have one end and the other end, respectively. One end of the inner edge of the main seal portion 31 and one end of the inner edge of the protruding seal portion 34 are connected at a first point described later. Further, the other end of the inner edge of the main seal portion 31 and the other end of the inner edge of the protruding seal portion 34 are connected at a second point described later. In other words, the inner edge of the main seal portion 31 and the inner edge of the protruding seal portion 34 are distinguished by using the first point and the second point as boundaries. The definition of the first point and the second point will be described later. In the closing seal portion 30, the main sealing portion 31, and the protruding sealing portion 34, the inner edge means an edge of the closing sealing portion 30, the main sealing portion 31, and the protruding sealing portion 34 that is located on the housing portion 16 side. I do.

突出 With reference to FIG. 7, the protruding seal portion 34 will be described in detail. FIG. 7 is an enlarged plan view showing the protruding seal portion 34 of the closing seal portion 30 of the lidded container 10 of FIG.

First, the definition of the protruding seal portion 34 will be described. In the first embodiment, when the distance from the inner edge of the closing seal portion 30 to the center point C of the housing portion 16 is measured clockwise at each position of the closing seal portion 30, the projecting seal portion 34 This is a portion showing a change that starts decreasing from the first constant value, then reaches a local minimum value, then starts increasing the distance, and then returns to the second constant value. In FIG. 7, among the points on the inner edge of the closing seal portion 30, the first point at which the distance starts to increase from the first constant value, the minimum point at which the distance shows the minimum value, and the distance return to the second constant value. The second points are represented by

reference numerals

351, 371 and 361, respectively. Note that the outer edge of the closing seal portion 30 is an edge of the edge of the closing seal portion 30 that is located on the opposite side of the inner edge.

The protruding seal portion 34 includes a distal end portion 37, and a first protruding seal portion 35 and a second protruding seal portion 36 arranged so as to sandwich the distal end portion 37. The distal end portion 37 is a portion of the protruding seal portion 34 which is closest to the center point C of the housing portion 16 of the container 20 in plan view, and is a portion including the above-described minimum point 371. The first protruding seal portion 35 is a portion of the closed seal portion 30 extending from the first point 351 to the distal end portion 37. The second protruding seal portion 36 is a portion of the closed seal portion 30 extending from the second point 361 to the tip portion 37.

差 The difference between the distance d1 from the first point 351 to the center point C of the housing section 16 and the distance d3 from the minimum point 371 to the center point C of the housing section 16 is, for example, 5 mm or more. The difference between the distance d2 from the second point 361 to the center point C of the housing 16 and the distance d3 is, for example, 5 mm or more.

において In FIG. 7, reference numeral W1 represents the width of the main seal portion 31, and reference numeral W2 represents the width of the distal end portion 37 of the protruding seal portion. The width W2 of the distal end portion 37 of the protruding seal portion 34 is smaller than the width W1 of the main seal portion 31. For example, the difference between the width W2 of the tip portion 37 and the width W1 of the main seal portion 31 is 2 mm or more. The ratio (= W2 / W1) of the width W2 of the distal end portion 37 of the protruding seal portion 34 to the width W1 of the main seal portion 31 is, for example, 0.02 or more and 0.75 or less. The width W2 of the tip portion 37 is, for example, 0.5 mm or more and 3 mm or less.

When the pressure of the housing portion 16 increases, the tip portion 37 of the projecting seal portion 34, in particular, separates before the main seal portion 31, and the lid 50 is peeled off from the flange portion 27 at the position of the tip portion 37. .

In the first embodiment, the portion of the main seal portion 31 connected to the first protruding seal portion 35 extends along the outer edge 271 of the flange portion 27 beyond the first point 351 as shown by a dotted line in FIG. And extends to the groove 29. Similarly, a portion of the main seal portion 31 connected to the second protruding seal portion 36 extends beyond the second point 361 along the outer edge 271 of the flange portion 27 to the groove portion 29. The portion of the main seal portion 31 connected to the first protruding seal portion 35 and the portion connected to the second protruding seal portion 36 are located on the opposite side of the groove 29 from the side where the protruding seal portion 34 is located. ,It is connected. Thus, the groove 29 is surrounded by the main seal portion 31 and the projecting seal portion 34 in a plan view.

In FIG. 7, reference numeral 38 denotes an edge of the portion surrounding the groove 29 of the closed seal portion 30 including the main seal portion 31 and the projecting seal portion 34 on the groove 29 side. In the following description, the edge indicated by reference numeral 38 is also referred to as a groove side edge. The groove side edge portion 38 includes an inner edge end portion 38a located on the inner edge 272 side in the direction D2 in which the groove portion 29 extends, an outer edge side end portion 38b located on the outer edge 271 side in the direction D2 in which the groove portion 29 extends, and And a pair of longitudinal edges 38c extending along the extending direction D2. In the example shown in FIG. 7, the inner edge 38 a constitutes a part of the edge of the protruding seal portion 34. The outer edge 38b forms a part of the edge of the main seal 31 at a position opposite to the inner edge 38a in the direction D2 in which the groove 29 extends.

In FIG. 7, reference numeral 39 denotes a portion of the closed seal portion 30 located between the outer edge 38 b and the outer edge 271 of the flange 27 in the direction D <b> 2 in which the groove 29 extends. In the following description, the seal indicated by reference numeral 39 is also referred to as a groove outer edge side seal. The groove outer edge side seal portion 39 forms a part of the main seal portion 31. In FIG. 7, reference symbol W3 represents the width of the groove outer edge side seal portion 39 in the direction D2 in which the groove portion 29 extends. The width W3 is, for example, not less than 2 mm and not more than 15 mm.

7, in the example shown in FIG. 7, the width W3 of the groove outer edge side seal portion 39 in the direction D2 in which the groove portion 29 extends is smaller than the width W2 of the distal end portion 37 of the projecting seal portion 34 in the direction D2 in which the groove portion 29 extends. However, the present invention is not limited to this, and as shown in FIGS. 11, 13, 18, 21, and 22 described later, the width W3 of the groove outer edge side seal portion 39 is equal to the width W2 of the distal end portion 37 of the projecting seal portion 34. It may be larger than.

(Details of the concave part of the container)
Subsequently, the concave portion 24 of the container 20 according to the first embodiment will be described in more detail with reference to FIG.

凹部 As described above, the concave portion 24 includes the pair of base portions 25 and the deepest portion 26. As shown in FIG. 6, the deepest portion 26 is defined as a portion of the recess 24 that is farthest from the tangent L1 or the tangent plane when the tangent L1 or the tangent plane circumscribing the pair of bases 25 is virtually drawn. You. Since the concave portion 24 including the pair of base portions 25 and the deepest portion 26 functions as a rib, it is less likely to be deformed than other portions of the side portion 23. That is, the concave portion 24 has shape retention. For this reason, as described later, when a pressing force is applied to the body 21 of the container 20, the deepest portion 26 of the recess 24 is unlikely to be deformed outward.

In FIG. 6, reference symbol T1 indicates the thickness of the side portion 23 at the base portion 25, and reference symbol T2 indicates the thickness of the side portion 23 at the deepest portion 26. The thickness T2 of the side portion 23 at the deepest portion 26 is, for example, 0.05 mm or more and 0.4 mm or less. The thickness T2 of the side portion 23 at the deepest portion 26 may be smaller than the thickness T1 of the side portion 23 at the base 25. For example, the thickness T2 may be equal to or less than one time the thickness T1. It is preferable that the difference between the thickness T2 and the thickness T1 is small in order for the concave portion 24 to stably have high shape retention compared to the other portions of the side portion 23.

Also, as shown in FIGS. 4 and 5 described above, both the base 25 and the deepest portion 26 of the concave portion 24 are displaced toward the center of the container 20 from the flange portion 27 toward the bottom portion 22 in the vertical direction D1. It is inclined to. The inclination angle θ2 of the deepest part 26 is an angle formed by a straight line L2 connecting the upper end 261 of the deepest part 26 and the lower end 262 of the deepest part 26 with respect to the vertical direction D1, as shown in FIG. Although not shown, the inclination angle of the base 25 is also an angle formed by a straight line connecting the upper end 251 of the base 25 and the lower end 252 of the base 25 with respect to the vertical direction D1.

When the container 20 is manufactured by the sheet forming method, the thickness T1 of the side portion 23 of the base 25 decreases as the inclination angle of the base 25 decreases. This is because the smaller the inclination angle of the base 25, the smaller the area of the sheet used for forming the sheet to form the side portions 23 in the base 25. Similarly, as for the deepest portion 26, the smaller the inclination angle of the deepest portion 26, the smaller the thickness T2 of the side portion 23 in the deepest portion 26. Therefore, in order to increase the thickness T2 and enhance the shape retention of the concave portion 24 in the deepest portion 26, the inclination angle of the deepest portion 26 is preferably large, for example, preferably 3 ° or more. If the inclination angle of the deepest portion 26 is too large, the volume of the storage portion 16 becomes small, which is not preferable. Therefore, the inclination angle of the deepest part 26 is preferably, for example, 10 ° or less.

In addition, in order to enhance the shape retention of the concave portion 24 in the deepest portion 26, it is preferable that the difference between the inclination angle of the base 25 and the inclination angle of the deepest portion 26 is small, for example, it is preferably 7 ° or less. Thereby, the shape retention of the concave portion 24 can be stably increased as compared with other portions of the side portion 23.

Next, the deformation that occurs in the recess 24 when a pressing force is applied to the body 21 of the container 20 will be described with reference to FIGS. 8 and 9. FIG. 8 is a perspective view showing a state in which a pressing force F is applied to the bottom 22 of the empty container 20 to which the lid 50 is not joined. FIG. 9 is a perspective view showing the empty container 20 deformed based on the pressing force. The empty container 20 is obtained by, for example, peeling off the lid 50 of the lidded container 10 from the container 20 without deforming the container 20, and taking out the contents from the container 20.

符号 In FIG. 8, reference numeral H1 represents the height of the container 20 before being deformed by the application of the pressing force F (also referred to as the height before deformation). The pre-deformation height H1 is the vertical distance from the lowest part of the bottom 22 to the upper part of the side 23 (the part where the side 23 and the flange 27 are connected). In FIG. 9, reference symbol H2 represents the height of the container 20 after being deformed based on the pressing force (also referred to as a height after deformation). Here, the pressing force F is adjusted so that the height H2 after deformation becomes 0.9 × H1.

(4) When a pressing force is applied to the bottom portion 22 of the container 20, the container 20 is deformed so that the bottom portion 22 is displaced toward the flange portion 27 side. In addition, the deformation that the side portion 23 is displaced outward also occurs at least partially. For example, an arrow T shown in FIG. 9 indicates that the deepest portion 26 of the concave portion 24 is displaced outward.

As described above, the pressing force applied to the bottom portion 22 of the container 20 causes the deformation of the bottom portion 22 toward the flange portion 27 and the deformation of the side portion 23 toward the outside. The deformation of the bottom portion 22 toward the flange portion 27 contributes to increasing the pressure of the container 20. On the other hand, the outward deformation of the side portion 23 acts to inhibit an increase in the pressure of the container 20. For this reason, in order to efficiently increase the pressure inside the container 20, the side portions 23 are suppressed from being deformed outward when the bottom portion 22 of the container 20 is pressed toward the flange portion 27. 23 is preferred. Here, in the first embodiment, a concave portion 24 is provided in the side portion 23. The outward deformation of the deepest portion 26 of the concave portion 24 acts to further inhibit an increase in the pressure of the container 20 as compared with the other portion of the side portion 23 deforming outward.

In consideration of such a problem, it is preferable to configure the concave portion 24 so that the concave portion 24 is prevented from being deformed when the bottom portion 22 of the container 20 is pressed. Specifically, when the bottom portion 22 of the container 20 is pressed until the height H2 after deformation becomes 0.9 × H1, the shape-retaining height K indicated by the symbol K in FIG. It is preferable to configure the concave portion 24 so as to have a height H1 or more. Here, the shape-retaining height K is a distance in the vertical direction D1 from the flange portion 27 to the boundary portion 263 of the deepest portion 26. The boundary portion 263 is a position corresponding to the pair of base portions 25 when the bottom portion 22 of the container 20 is pressed toward the flange portion 27 until the height H2 after deformation becomes 0.9 × H1 in the deepest portion 26. This is a portion that is deformed outward up to (the position of a tangent or a tangent plane circumscribing the pair of bases 25). By configuring the concave portion 24 in this manner, it is possible to suppress the pressing force applied to the bottom portion 22 of the container 20 from being used to deform the deepest portion 26 of the concave portion 24. Thereby, the pressure inside the container 20 can be efficiently increased, and the container 10 with the lid can be opened with a smaller pressing force.

Various methods are conceivable as specific methods for configuring the concave portion 24 so that the shape-retaining height K ≧ 0.5 × the height H1 before deformation is satisfied. For example, it is conceivable to adjust the absolute value of the thickness T2 of the side portion 23 in the deepest portion 26, or to adjust the ratio of the thickness T2 to the thickness T1 of the side portion 23 in the base portion 25. It is also conceivable to adjust the inclination angle θ2 of the deepest portion 26 with respect to the vertical direction D1.

(Material of container and lid)
Hereinafter, an example of a material forming the container 20 and the lid 50 will be described.

プラスチック As a material for forming the container 20, a plastic such as polypropylene, polystyrene, or polyethylene terephthalate can be used. For example, when the container 20 is manufactured by a sheet forming method, an unstretched plastic film such as unstretched polypropylene and unstretched nylon can be used as the sheet material. The sheet material may be composed of a single layer or may include a plurality of layers. Note that the container 20 may be manufactured by injection molding.

材料 The material constituting the lid 50 is selected so that the lower surface of the lid 50 can be joined to the upper surface 274 of the flat portion 273 of the flange portion 27 of the container 20. For example, the lid 50 includes a base material layer and a sealant layer forming a lower surface of the lid 50. The thickness of the lid 50 is, for example, 20 μm or more and 100 μm or less. As a material forming the base material layer of the lid 50, a polyester resin such as polyethylene terephthalate, a polyamide resin such as nylon, polypropylene, or the like can be used. In addition, as a material forming the sealant layer, polypropylene, a mixed resin of polypropylene and polyethylene, or the like can be used. A mixed resin of polypropylene and polyethylene is a material having relatively small bonding strength, also called easy peel sealant. When both the base material layer and the sealant layer contain polypropylene, biaxially stretched polypropylene is used for the base material layer, and unstretched polypropylene is used for the sealant layer.

(4) It is preferable that the lid 50 has easy tearability in a direction in which the fragile portion 40 extends at least in a portion overlapping the fragile portion 40. Since the lid 50 has an easy tearing property in the direction in which the fragile portion 40 extends, when the groove 29 of the container 20 is broken by the fragile portion 40, it is easy to break the lid 50 together with the groove 29.

構成 A configuration for realizing easy tearing is optional. For example, a half-cut line extending along the direction in which the fragile portion 40 extends may be provided in a portion of the lid 50 that overlaps the fragile portion 40. The half-cut line may or may not penetrate the base layer of the lid 50. The half-cut line is formed by, for example, laser processing.

易 Furthermore, the easy tearability of the lid 50 may be realized by the characteristics of the film constituting the lid 50 and the laminate itself. For example, the tensile strength of the film constituting the base layer of the lid 50 in the direction in which the fragile portion 40 extends may be higher than the tensile strength in the direction perpendicular to the direction in which the fragile portion 40 extends.

(Method of manufacturing container with lid)
Next, as an example of a method of manufacturing the lidded container 10, a method of manufacturing the lidded container 10 shown in FIGS. 1 to 5 will be described.

First, the container 20 is manufactured by using a sheet forming method. For example, although not shown, a male mold is arranged on the inner surface side of the sheet material, and a female mold is arranged on the outer surface side of the sheet material. Subsequently, with the portion of the sheet material constituting the flange portion 27 fixed, the male mold is relatively moved toward the female mold, and the portion of the sheet material constituting the body portion 21 is formed into the female mold. Push in. Thereby, the container 20 having the body 21 and the flange 27 can be obtained. Next, a blade having a shape corresponding to the shape of the groove 29 and the flat portion 273 of the flange 27 is brought into contact with the groove 29 and the flat portion 273 of the flange 27 of the container 20 from the lower surface side of the container 20. As a result, a half cut as shown in FIG.

Next, after the contents are filled in the storage portion 16 defined by the body portion 21, the lid 50 is placed on the upper surface 274 of the flat portion 273 of the flange portion 27 of the container 20. Thereafter, a portion of the lid 50 where the closed seal portion 30 is to be formed is heated using a hot plate or the like to melt the sealant layer of the lid 50. Thus, the lower surface of the lid 50 can be welded to the upper surface 274 of the flat portion 273 of the flange portion 27 of the container 20 via the closing seal portion 30. Thereafter, the container 20 and the lid 50 are cut into a predetermined shape as needed. Thus, the container 10 with a lid can be obtained.

As a method for producing the container 20, a known method such as an injection molding method can be appropriately used in addition to the above-described sheet molding method.

(Operation of container with lid)
Next, an example of the operation of the lidded container 10 will be described. First, an example of the operation of the lidded container 10 when the projecting seal portion 34 separates from the flange portion 27 at an unintended timing will be described.

The flange portion 27 of the lidded container 10 of the first embodiment has the groove portion 29 located between the projecting seal portion 34 and the outer edge 271 of the flange portion 27 as described above. For this reason, even if the projecting seal portion 34 is separated due to the force applied to the lidded container 10 when the lidded container 10 is transported or the like, the contents leaking from the storage portion 16 are stored in the groove portion 29. can do. Further, the pressure increased in the housing portion 16 can be reduced by the groove portion 29. Further, the closing seal portion 30 is configured to have a groove side edge 38 surrounding the groove 29. For example, a groove outer edge side seal portion 39 of the closing seal portion 30 is provided between the groove portion 29 and the outer edge 271 of the flange portion 27 in the direction D2 in which the groove portion 29 extends. For this reason, it is possible to prevent the contents stored in the groove portion 29 from leaking out of the lidded container 10 after leaking from the storage portion 16.

As described above, in the first embodiment, even when the unintentional impact is applied to the lidded container 10 and the pressure of the housing portion 16 is increased, the projecting seal portion 34 is separated from the flange portion 27, Can relieve pressure. Further, leakage of the contents in the groove 29 to the outside of the lidded container 10 can be suppressed by the groove outer edge side seal portion 39. For this reason, the transport suitability and portability of the lidded container 10 can be improved.

As shown in FIGS. 11, 13, 18, 21, and 22 described later, the width W3 of the groove outer edge side seal portion 39 of the closing seal portion 30 is larger than the width W2 of the distal end portion 37 of the protruding seal portion 34. Is also good. Thereby, when the contents leaked from the housing portion 16 are housed in the groove portion 29, it is possible to prevent the groove outer edge side seal portion 39 from separating from the flange portion 27. Thereby, it is possible to further prevent the contents contained in the groove 29 from leaking out of the lidded container 10.

Next, an example of the operation of the lidded container 10 in a normal state will be described. That is, a method of opening the lidded container 10 in a state where the protruding seal portion 34 is not separated will be described.

時 When opening the lidded container 10, the user first breaks the flange portion 27 along the fragile portion 40. For example, a part of the flange portion 27 is torn along the fragile portion 40 so as to intersect the groove portion 29. As a result, as shown in FIG. 10, an opening 29 a opened to the outside can be formed in the groove 29. Alternatively, the flange 27 including the groove 29 may be broken by bending the flange 27 along the fragile portion 40, and the opening 29 a may be formed in the groove 29.

Next, the user applies a pressing force to the bottom portion 22 of the container 20. For example, with the thumb of one hand attached to the bottom part 22 and the other finger of one hand attached to the lid 50, the lidded container 10 is pressed.

場合 As an example, a case where the bottom 22 of the container 20 is pressed will be described. In this case, when the bottom portion 22 is pressed toward the flange portion 27, the container 20 is deformed so that the bottom portion 22 is displaced toward the flange portion 27 side. Thereby, the pressure inside the container 20 increases. Here, in the first embodiment, the closing seal portion 30 has the projecting seal portion 34 including the tip portion 37. For this reason, by increasing the pressure in the container 20, the distal end portion 37 of the protruding seal portion 34 is separated before the main seal portion 31, and the flange portion 27 of the container 20 and the lid 50 are positioned at the distal end portion 37. A gap can be formed between them. Accordingly, a gap is formed between the flange portion 27 of the container 20 and the lid 50 at the position of the protruding seal portion 34, and the groove 29 and the housing portion 16 can be made to pass through. For this reason, the contents stored in the storage portion 16 can be taken out through the portion where the protruding seal portion 34 is separated, the groove 29, and the opening 29 a of the groove 29. At this time, the groove 29 can function as a flow path when discharging the contents stored in the container 20 to the outside.

Various changes can be made to the first embodiment. Hereinafter, a modification of the first embodiment will be described with reference to the drawings as necessary. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the first embodiment will be used for parts that can be configured in the same manner as the first embodiment. , And redundant description will be omitted. Further, when it is clear that the operation and effect obtained in the first embodiment described above can also be obtained in the modification of the first embodiment, the description thereof may be omitted.

(First Modification of Container)
In the above-described first embodiment, an example has been described in which the housing portion 16, that is, the inner edge 272 of the flange portion 27 has a substantially circular contour in plan view. However, the contour of the inner edge 272 of the flange portion 27 in plan view is not particularly limited as long as desired contents can be accommodated in the container 20. Hereinafter, an example in which the inner edge 272 of the flange portion 27 has a substantially rectangular contour will be described with reference to FIGS. 11 and 12. Although not shown, the inner edge 272 of the flange portion 27 may have a polygonal outline other than a rectangular shape in plan view.

FIG. 11 is a plan view showing a case where the container 10 with a lid according to the first modification of the first embodiment of the container is viewed from the lid 50 side, and FIG. It is a bottom view which shows the case seen from 22 side. In the example shown in FIGS. 11 and 12, the inner edge 272 of the flange portion 27 has a rectangular portion 272b extending in a substantially rectangular shape, and an inner protruding portion 272x protruding inward from the rectangular portion 272b. The outer edge 271 has a parallel portion 271a extending substantially parallel to the inner edge 272, and an outer projecting portion 271y projecting outward from the parallel portion 271a.

As shown in FIGS. 11 and 12, a groove 29 is provided between the inner protruding portion 272 x of the inner edge 272 of the flange portion 27 and the outer protruding portion 271 y of the outer edge 271. The groove 29 extends from the inner edge 272 of the flange 27 to the outer edge 271 so as not to reach the inner edge 272 and the outer edge 271. Also in the present modification, preferably, the groove 29 overlaps a virtual straight line Lc connecting the center point C and the tip of the inner protruding portion 272x in a plan view. Preferably, the groove 29 extends along a virtual straight line Lc connecting the center point C and the tip of the outer protruding portion 271y in a plan view.

As shown in FIGS. 11 and 12, also in this modification, at least the groove portion 29 of the flange portion 27 is provided with a fragile portion 40 for breaking the groove portion 29 in a direction intersecting the direction in which the groove portion 29 extends. Have been. For this reason, when opening the container 10 with a lid, the flange part 27 including the groove part 29 can be broken along the fragile part 40, and the opening part 29a can be formed in the groove part 29.

As shown in FIGS. 11 and 12, the fragile portion 40 may extend in a direction intersecting with the direction in which the groove 29 extends, and may include a notch 41 provided on the outer edge 271 of the flange portion 27. In this case, the notch 41 of the fragile portion 40 can function as a starting point for tearing the flange 27 including the groove 29 along a direction intersecting the direction in which the groove 29 extends. Although not shown, the fragile portion 40 may extend in a direction intersecting the direction in which the groove 29 extends, and may include a notch provided in the outer edge 271 of the flange portion 27. In addition, a notch or a notch may be formed in the outer edge of the cover 50 in a portion of the lid 50 that overlaps the notch 41 or the notch of the flange portion 27.

The weak portion 40 of the above-described lidded container 10 shown in FIGS. 1 and 2 may include these cuts or notches.

(Second Modification of Container)
FIG. 13 is a plan view showing a case where the container 10 with a lid according to the second modification of the first embodiment of the container is viewed from the lid 50 side, and FIG. It is a bottom view which shows the case seen from 22 side. The outer edge 271 of the container 20 according to the second modification of the first embodiment of the container has a groove parallel portion 271b extending parallel to the groove 29, as shown in FIGS. In the example shown in FIGS. 13 and 14, the outer edge 271 has a pair of groove parallel portions 271 b sandwiching the groove 29 when viewed in a direction orthogonal to the direction in which the groove 29 extends. The fragile portion 40 extends from one of the pair of groove parallel portions 271b to the other.

FIG. 15 is a longitudinal sectional view showing a case where the lidded container 10 of FIG. 13 is cut along the line XV-XV. As shown in FIG. 15, the bottom 22 of the container 20 according to the second modification of the first embodiment of the container has a recess 221 protruding toward the lid 50 side. As shown in FIG. 14, the recess 221 has a circular shape in plan view.

方法 A method for opening the container 10 with a lid according to a second modification of the first embodiment of the container will be described. The description on the method for opening the container 10 with a lid according to the second modification of the first embodiment of the container will be provided with the lid according to the above-described first embodiment and another modification of the first embodiment unless there is a contradiction. The same applies to the container 10. When opening the container 10 with a lid, the user first breaks the flange 27 along the fragile portion 40. As a result, an opening 29a opened to the outside is formed in the groove 29.

Next, as shown in FIG. 16, the user holds the container 10 with the lid such that the lid 50 is located below and the bottom 22 of the container 20 is located above. In the example shown in FIG. 16, the user touches the bottom 22 of the container 20 with his thumb and touches the lid 50 with another finger, and holds the lidded container 10 with one hand. In the example shown in FIG. 16, the user holds the lidded container 10 so that the user touches the concave portion 221 of the bottom portion 22 with his thumb.

Next, the user applies a pressing force to the bottom portion 22 of the container 20. In the example illustrated in FIG. 17, the user presses the bottom portion 22 with the thumb while supporting the lid 50 with the finger other than the thumb. In the example shown in FIG. 17, the user presses the depression 221 of the bottom 22 with the thumb, in particular. Due to the pressing of the bottom portion 22, the container 20 is deformed so that the bottom portion 22 is displaced toward the flange portion 27 side, and the pressure inside the container 20 increases. As a result, the distal end portion 37 of the protruding seal portion 34 is separated, a gap is formed between the flange portion 27 of the container 20 and the lid 50 at the position of the distal end portion 37, and the groove portion 29 and the housing portion 16 are passed through. Can be. For this reason, the contents stored in the storage portion 16 can be taken out through the portion where the protruding seal portion 34 is separated, the groove 29, and the opening 29 a of the groove 29.

(Third Modification of Container)
In the above-described first embodiment and each of the modifications of the first embodiment, the example in which the fragile portion 40 is provided at least in the groove portion 29 has been described. However, the position where the fragile portion 40 is provided is not limited to this. Hereinafter, a third modification of the first embodiment of the container will be described with reference to FIGS. 18, 19, and 20. Drawing 18 is a top view showing the case where container 10 with a lid concerning a 3rd modification of a 1st embodiment of a container is seen from lid 50 side. FIG. 19 is a bottom view showing the case where the container 10 with the lid is viewed from the bottom 22 side of the container 20. FIG. 20 is a longitudinal sectional view showing a case where the lidded container 10 of FIG. 18 is cut along the line XX-XX.

As shown in FIGS. 18 and 19, the closing seal portion 30 has a groove side edge 38 surrounding at least the groove 29. In the above-described first embodiment and each of the modifications of the first embodiment, the groove side edge portion 38 of the closing seal portion 30 matches the contour of the groove portion 29 of the flange portion 27. On the other hand, in the present modification, the flat portion 273 of the flange portion 27 is partially located between the groove side edge portion 38 of the closing seal portion 30 and the contour of the groove portion 29 of the flange portion 27. In the present modification, such a flat portion 273 is located closer to the outer edge 271 than the groove 29 in the direction in which the groove 29 extends. In other words, the groove side edge 38 surrounds the groove 29 and a part of the flat portion 273 that is located closer to the outer edge 271 than the groove 29 in the direction in which the groove 29 extends.

As shown in FIG. 20, of the portion surrounded by the groove side edge portion 38, the portion where the flat portion 273 is located is the unsealed portion 60 where the flat portion 273 and the lid 50 are not joined. I have. As shown in FIGS. 18, 19, and 20, the groove side edge portion 38 has an inner edge side end portion 38 a located on the inner edge 272 side and an outer edge side edge located on the outer edge 271 side as viewed in the direction in which the groove portion 29 extends. A portion 38b. A fragile portion 40 for breaking the flange portion 27 in a direction intersecting the direction in which the groove portion 29 extends between a portion overlapping the inner edge side end portion 38a and a portion overlapping the outer edge side end portion 38b of the flange portion 27. Is provided. In the examples shown in FIGS. 18, 19, and 20, the fragile portion 40 is provided in a portion of the flat portion 273 where the unsealed portion 60 is located. In the lidded container 10 shown in FIGS. 18, 19, and 20, an opening communicating with the groove 29 is formed by breaking the flat portion 273 in the portion where the unsealed portion 60 is located by using the fragile portion 40. can do. In this case, the contents accommodated in the accommodating portion 16 are divided into the portion where the protruding seal portion 34 is separated, the groove 29, the portion where the unsealed portion 60 is located, between the flat portion 273 and the lid 50, and the flat portion 273. Can be taken out to the outside through the opening.

In addition, in the form of the container 10 with the lid according to the above-described first embodiment and the first and second modified examples of the container, among the forms in which the groove side edge 38 at least surrounds the groove 29, the groove side edge 38 It can be understood that this corresponds to a form in which only the groove 29 is surrounded without surrounding a part of the flat portion 273.

(Fourth Modification of Container)
In the above-described first embodiment and each modification of the first embodiment, an example in which the fragile portion 40 is provided on the flange portion 27 of the container 20 has been described. However, the container 20 need not be provided with the fragile portion 40. Hereinafter, a fourth modification of the first embodiment of the container will be described with reference to FIGS. 21 and 22. FIG. 21 is a plan view showing an example of the container with a lid 10 according to a fourth modification of the first embodiment of the container when viewed from the lid 50 side. FIG. 22 is a plan view showing another example of the lidded container 10 according to the fourth modified example of the first embodiment of the container when viewed from the lid 50 side. The lidded container 10 shown in FIG. 21 corresponds to the lidded container 10 according to the first modified example of the above-described first embodiment shown in FIG. 11 in which the fragile portion 40 of the container 20 is deleted. The lidded container 10 shown in FIG. 22 corresponds to the lidded container 10 according to the second modified example of the above-described first embodiment shown in FIG. 13 in which the fragile portion 40 of the container 20 is deleted. As shown in FIG. 21, in the container 10 with a lid in which the inner edge 272 of the flange portion 27 has a substantially rectangular contour in plan view, the container 20 may not have the fragile portion 40. Further, as shown in FIG. 22, in the container 10 with the lid in which the inner edge 272 of the flange portion 27 has a substantially circular contour in plan view, the container 20 may not be provided with the fragile portion 40.

Note that, in the form of the lidded container 10 according to the first modification of the above-described first embodiment shown in FIG. 11, the fragile portion 40 is provided on the flange portion 27 of the container 20 of the lidded container 10 shown in FIG. 21. It corresponds to the form. The form of the container 10 with a lid according to the second modification of the first embodiment shown in FIG. 13 is a form in which a fragile portion 40 is provided on the flange portion 27 of the container 20 of the container 10 with a cover shown in FIG. Equivalent to.

Also in the lidded container 10 shown in FIGS. 21 and 22, when the projecting seal portion 34 is separated from the flange portion 27 by an unintended impact applied to the lidded container 10 and the pressure of the housing portion 16 is increased, the groove portion 29 is formed. Can relieve pressure. Also in the container 10 with a lid shown in FIGS. 21 and 22, the closing seal portion 30 is configured to have a groove side edge 38 surrounding the groove 29. Therefore, leakage of the contents in the groove 29 to the outside of the lidded container 10 can be suppressed by the groove outer edge side seal portion 39. Thereby, the transport suitability and portability of the container 10 with a lid can be improved.

In the lidded container 10 shown in FIGS. 21 and 22, the method of breaking the flange portion 27 when the lidded container 10 is opened is arbitrary. For example, the user can form the opening 29a in the groove 29 by breaking the flange 27 including the groove 29 using a cutting tool such as scissors.

Second Embodiment First, a problem to be solved by the second embodiment will be described. BACKGROUND ART Conventionally, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2016-94207, a plastic sheet molded container in which a storage section for storing foods and the like is formed is known.

の後 In such a plastic sheet molded container, post-processing such as sealing and half-cutting may be performed at a specific position of the sheet molded container. In this case, in order to accurately perform the post-processing, it is important to accurately position the sheet forming container with a jig or the like.

Conventionally, a sheet-formed container having a plurality of storage sections is manufactured through a heating step, a forming step, and a cooling step. However, due to the characteristics of the sheet molding, when the sheet molded container is manufactured, the resin sheet shrinks, and the degree of the shrinkage varies, which may cause a shift in the pitch of the housing portion.

(4) When post-processing such as sealing or half-cut processing is performed on a sheet-formed container in which the pitch of the storage section is shifted, the sealing position is shifted or the position of the blade for half-cutting is deviated from a predetermined position. In this case, there is a concern that not only a defective product is generated but also the edge of the blade is chipped due to a shift in the contact position of the blade.

The second embodiment provides a sheet-formed container capable of correcting a shift in the pitch of the storage portion and performing stable post-processing in a post-processing step of the sheet-formed container having multiple storage portions.

The sheet-formed container according to the second embodiment is a sheet-formed container, and includes a sheet flat portion, at least two receiving portions protruding from the sheet flat portion and arranged along a first direction, and the sheet flat portion. And at least two bent portions extending along a second direction orthogonal to the first direction, wherein cut lines are formed on both sides of the sheet flat portion with respect to the accommodation portion in the second direction. The cut lines are formed and cut into the bent portions, respectively.

シート In the sheet-formed container according to the second embodiment, at least one bent portion may be arranged between the two accommodation portions in the first direction.

In the sheet-formed container according to the second embodiment, the bent portion may have a V-shape, a U-shape, or a W-shape in a sectional view.

In the sheet molding container according to the second embodiment, the flat sheet portion has a rectangular shape in plan view, a long side of the rectangle is parallel to the first direction, and a short side of the rectangle is a second direction. May be parallel.

In the sheet molding container according to the second embodiment, the cut line separates the flat portion of the sheet into an outer portion and an inner portion, and the inner portion is relatively movable with respect to the outer portion. Good.

According to the second embodiment, in the post-processing step of the sheet-formed container having the multiple storage sections, the shift in the pitch of the storage sections can be corrected, and stable post-processing can be performed.

Hereinafter, the second embodiment will be described with reference to FIGS. FIG. 23 to FIG. 31 are views showing the second embodiment. In the following drawings, the same portions are denoted by the same reference numerals, and a detailed description thereof may be partially omitted.

In the present specification, the “third direction D3” refers to a direction along one side of the sheet flat portion 71 of the sheet forming container 70, and the “fourth direction D4” refers to a direction in which the sheet flat portion 71 of the sheet forming container 70 It refers to a direction orthogonal to the third direction D3 on the plane on which it is arranged. The “fifth direction D5” is a normal direction of a plane on which the sheet flat portion 71 of the sheet forming container 70 is arranged, and refers to a direction orthogonal to both the third direction D3 and the fourth direction D4.

(Sheet molded container)
As shown in FIGS. 23 and 24, the sheet-formed container 70 according to the second embodiment has a plurality of storage sections 16 made by sheet molding, and is a container 10 with a lid as a final product (see FIGS. 25 and 24). 26) is prepared. Such a sheet-formed container 70 includes a sheet flat portion 71 and a plurality of storage portions 16 protruding from the sheet flat portion 71, respectively. A plurality of bent portions 75 protrude from the sheet flat portion 71, and a pair of cut lines 76 are formed in the sheet flat portion 71.

The sheet flat portion 71 has a substantially rectangular shape in plan view. The first direction side (long side) 71a of this rectangle is parallel to the third direction D3, and the second direction side (short side) 71b is parallel to the fourth direction D4. It is preferable that the thickness of the sheet flat portion 71 be 0.2 mm or more and 1.0 mm or less. Further, the sheet flat portion 71 has an outer portion 72 located outside the pair of cut lines 76 in the fourth direction D4, and an inner portion 73 located inside the pair of cut lines 76 in the fourth direction D4. are doing.

The storage portions 16 are for storing the content liquid L therein, and are arranged in plural (six) in the sheet flat portion 71. Specifically, a plurality (three) of the storage portions 16 are arranged in the sheet flat portion 71 along the third direction D3, and a plurality (two) of the storage portions 16 are arranged along the fourth direction D4. However, the present invention is not limited to this, and at least two housing units 16 may be provided along the third direction D3 and at least one housing unit 16 may be provided along the fourth direction D4. Each of the storage portions 16 protrudes from the sheet flat portion 71 toward the minus side in the fifth direction D5.

シート The sheet-formed container 70 having the accommodation portion 16 has the bottom portion 22 and the side portions 23 extending from the bottom portion 22 toward the sheet flat portion 71. The accommodation section 16 is open toward the plus side in the fifth direction D5. As shown in FIG. 23, the outer edge of the opening of the housing portion 16 is formed of an arc-shaped portion 16a having an arc shape in plan view and a concave portion 16b having a concave shape in plan view. However, the present invention is not limited to this, and the outer edge of the opening of the housing portion 16 may have a planar shape such as a circular shape, an elliptical shape, and a polygonal shape.

流路 Around the accommodating section 16, a flow path section 29b is formed. The flow path portion 29b constitutes a flow path for pouring out the content liquid L in the storage section 16 after the container 10 with the lid is turned on (see FIGS. 25 and 26). The flow path portion 29b protrudes from the sheet flat portion 71 toward the minus side in the fifth direction D5, and has a depth smaller than that of the storage portion 16. Further, the flow path portion 29b has an elongated shape in plan view. Further, the flow path portion 29b is arranged to be separated from the accommodation portion 16, and extends from the concave portion 16b along the fourth direction D4. The flow path 29b in the second embodiment corresponds to the groove 29 in the lidded container 10 of the first embodiment. A half cut line 42 is formed in the sheet flat portion 71 around the flow path portion 29b by a cutting tool 94 (see FIGS. 28 and 29) as described later. Note that “half cut” means that only a part of the target is cut in the thickness direction from one surface side. The half-cut line 42 in the second embodiment corresponds to the fragile portion 40 in the lidded container 10 of the first embodiment. In FIG. 23, a half-cut scheduled line 42a on which the half-cut line 42 is formed is indicated by a virtual line (two-dot chain line). Note that such a flow path portion 29b does not necessarily have to be provided.

{Circle around (1)}, around the accommodating portion 16 and the flow path portion 29b, the individual cut scheduled lines 13 constituting the outer edge of the lidded container 10 (see FIGS. 25 and 26) are indicated by phantom lines (two-dot chain lines).

The bent portion 75 elastically deforms in the third direction D3, thereby enabling each accommodation portion 16 to move in the third direction D3, and enabling position adjustment of each accommodation portion 16. The bent portion 75 has an elongated shape extending along the fourth direction D4 in plan view. In this case, the bent portion 75 is provided between the pair of cut lines 76 over the entire area in the fourth direction D4. The bent portion 75 does not reach the first direction sides 71a of the sheet flat portion 71, but ends inside the first direction sides 71a.

屈曲 As shown in FIG. 24, the bent portions 75 project from the sheet flat portion 71 toward the minus side in the fifth direction D5. The bent portion 75 has a substantially V-shape in cross section. By changing the angle of the V-shape, the inner portion 73 located on the side of the bent portion 75 in the third direction D3 can move along the third direction D3. The bent portion 75 protrudes from the sheet flat portion 71 in the same direction as the storage portion 16 (minus side of the fifth direction D5), but is not limited to this, and is opposite to the storage portion 16 (fifth direction D5). May be protruded to the (plus side).

In this case, four bent portions 75 are provided. That is, in the third direction D3, one bent portion 75 is provided between each of the housing portions 16 and between the outermost housing portion 16 and each of the second direction sides 71b. However, the present invention is not limited thereto, and at least two bent portions 75 may be provided.

A pair of cut lines 76 are provided on the sheet flat portion 71. The pair of cut lines 76 are formed on both sides of the housing 16 in the fourth direction D4. That is, the cut line 76 extends along the first direction side 71a inside the first direction side 71a. Further, the cut line 76 extends in a straight line parallel to the third direction D3. The cut line 76 is formed so as to penetrate the sheet flat portion 71 in the thickness direction.

Each cut line 76 is cut to the bent portion 75. That is, each cut line 76 is cut into all of the plurality (four) of bent portions 75. The cut line 76 separates the sheet flat portion 71 into an outer portion 72 and an inner portion 73, and the inner portion 73 is relatively movable with respect to the outer portion 72.

Such a sheet-formed container 70 includes a thermoplastic resin, for example, a single-layer sheet such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), or polyethylene naphthalate (PEN) or a barrier layer such as EVOH or nylon. It can be produced by molding (sheet molding) a multilayer sheet containing the same.

Specifically, as the single-layer sheet or the multilayer sheet, for example, a laminate having the following layer configuration can be used.
(1) Unstretched polypropylene layer (CPP) 300 μm
(2) Unstretched polypropylene layer (CPP) 200 μm / unstretched polyethylene layer (PE) 100 μm
(3) Unstretched polypropylene layer (CPP) 230 μm / Ethylene vinyl alcohol copolymer layer (EVOH) 40 μm / Unstretched polypropylene layer (PP) 230 μm
(4) Unstretched polypropylene layer (CPP) 180 μm / ethylene vinyl alcohol copolymer layer (EVOH) 40 μm / unstretched polypropylene layer (CPP) 180 μm / unstretched polyethylene layer (PE) 100 μm

The sheet forming container 70 forms the sheet flat portion 71, the accommodating portion 16, the flow path portion 29b, and the bent portion 75 by, for example, sheet forming the above-described single-layer sheet or multilayer sheet, and further forms the cut line 76 with a blade. It is produced by doing.

(Container with lid)
Next, a sealed container 10 as a final product manufactured using the sheet molded container 70 according to the second embodiment will be described with reference to FIGS. In the following description, the sealed container 10 is also referred to as a lidded container 10 as in the case of the first embodiment.

容器 As shown in FIGS. 25 and 26, the container with lid 10 is manufactured using the above-described sheet-formed container 70. The lidded container 10 includes a flange portion 27, a storage portion 16 and a flow path portion 29 b protruding from the flange portion 27, a content liquid L stored in the storage portion 16, and a lid material adhered to the flange portion 27. 51. In the lidded container 10 shown in FIGS. 25 and 26, the lid member 51 corresponds to the lid 50 in the lidded container 10 of the first embodiment.

うち Of these, the flange portion 27 is a part of the sheet flat portion 71 of the above-described sheet forming container 70, and is formed by cutting the sheet flat portion 71 into a predetermined shape (see a two-dot chain line in FIG. 23). The storage section 16 and the flow path section 29b have the same configuration as the storage section 16 and the flow path section 29b of the sheet molding container 70, respectively. A half-cut line 42 is formed in the flange 27 around the flow path 29b from the back side (the side opposite to the lid member 51).

蓋 Furthermore, the lid member 51 is sealed over the entire periphery of the flange portion 27. Such a lid member 51 is formed of a laminate including at least a base material layer and a sealant layer. In this case, for example, the laminate may include a base layer, an intermediate layer, and a sealant layer sequentially arranged from the outside.

Specifically, for example, a laminate having the following layer configuration can be used as the laminate.
(1) Stretched polyethylene terephthalate layer (PET) 12 μm / stretched nylon layer (ONY) 15 μm / unstretched polypropylene layer (CPP) 50 μm
(2) Stretched polyethylene terephthalate layer (PET) 12 μm / stretched nylon layer (ONY) 15 μm / mixed resin layer of polypropylene (PP) and polyethylene (PE) 50 μm
(3) Stretched polyethylene terephthalate layer (PET) 12 μm / aluminum (ALM) 7 μm / unstretched polyethylene layer (PE) 50 μm

The above layers are formed by a dry lamination method, an extrusion lamination method, an extrusion coating method, or another coating method according to a conventional method.

厚み The thickness of the lid member 51 can be, for example, 30 μm or more and 100 μm or less.

(Method of manufacturing sheet-formed container and container with lid)
Next, a method of manufacturing the sheet molded container 70 and the lidded container 10 will be described with reference to FIGS.

First, a sheet 70a composed of a single-layer sheet or a multilayer sheet constituting the sheet molding container 70 is prepared (see FIG. 27A).

Next, the plate-like sheet 70a is heated, and the heated sheet 70a is placed on the female die 81. Next, after the sheet 70a is pushed into the female mold 81 to a certain extent using the plug 82, the inside of the female mold 81 is evacuated to form the sheet 70a into the shape of the female mold 81 (FIG. 27B). )reference).

シート By forming a sheet using the sheet 70a in this way, a sheet forming intermediate 70b having a predetermined shape is obtained (see FIG. 27 (c)). In this case, the sheet forming intermediate 70b includes a sheet flat portion 71, and the accommodation portion 16 and the bent portion 75 protruding from the sheet flat portion 71, respectively. Thereafter, the sheet forming intermediate 70b is cooled.

Next, cut lines 76 are formed by the blades 83 at positions on both sides of the flat portion 71 with respect to the storage portion 16 in the fourth direction D4 (see FIG. 27D). In this case, a part of the sheet flat portion 71 is separated from the inner portion 73 and the outer portion 72 via a cut line 76. The cut line 76 is also cut into the bent portion 75. Thus, the sheet-formed container 70 shown in FIGS. 23 and 24 is obtained.

Thus, the sheet molded container 70 is manufactured through the heating step, the molding step, and the cooling step. For this reason, during the production of the sheet-formed container 70, the sheet-formed intermediate 70b (the sheet-formed container 70) shrinks, and the degree of the shrinkage varies, which may cause a shift in the pitch of the accommodation portion 16.

Next, the half cut line 42 (see FIG. 25) is formed in the sheet forming container 70 by using the half cut device 90 shown in FIG.

This half-cut device 90 has a bottom surface portion 91, a top surface portion 92, and four columns 93 connecting the bottom surface portion 91 and the top surface portion 92. A plurality of blades 94 for forming the half-cut lines 42 are attached to the lower surface of the top surface portion 92. A stage 95 is provided between the bottom surface portion 91 and the top surface portion 92 so as to be vertically movable along the support column 93. On the upper surface of the stage 95, a receiving jig 96 having a shape corresponding to the shape of the sheet forming container 70 is fixed.

When the half-cut line 42 is formed, first, the sheet forming container 70 is attached to the receiving jig 96 of the half-cut device 90 (see FIG. 29A). At this time, each accommodation part 16 of the sheet molding container 70 is fitted into the corresponding convex part 97 of the receiving jig 96. For this reason, if the sheet-formed container 70 contracts and the pitch of the housing portions 16 is shifted, it may be difficult to fit each of the housing portions 16 into the convex portion 97 of the receiving jig 96.

において In the second embodiment, as described above, the sheet molding container 70 has the bent portion 75 extending along the fourth direction D4. Further, the cut lines 76 extend along the third direction D3 and cut into the bent portions 75, respectively. Therefore, the inner portion 73 moves relatively to the outer portion 72 by the elastic deformation of the bent portion 75 in the third direction D3. Along with this, each accommodation section 16 is movable along the third direction D3.

That is, as shown in FIG. 30, each accommodation portion 16 is movable along the inner portion 73 along the third direction D3. For this reason, each accommodation part 16 moves in the third direction D3 from the state immediately after molding (virtual line), and moves to a position (solid line) where it can be fitted into the convex part 97 of the receiving jig 96. Thereby, even if the sheet forming container 70 is contracted and the pitch of the housing portions 16 is shifted, the position of each housing portion 16 is appropriately adjusted, and the convex portions 97 of the jig 96 receive the respective housing portions 16. Can be securely fitted. On the other hand, the outer portion 72 maintains the state immediately after molding without being elastically deformed.

(4) Thereafter, the stage 95 is raised, and the receiving jig 96 and the sheet forming container 70 are also raised accordingly (see FIG. 29B). At this time, the sheet forming container 70 comes into contact with the blade 94, and the half-cut line 42 is accurately formed at a predetermined position of the sheet flat portion 71.

Next, the contents liquid L is filled into each of the storage sections 16 of the sheet forming container 70 (see FIG. 31A).

Next, a lid material 51 wound in a roll is prepared, and the lid material 51 is unwound from the roll. After that, the lid member 51 is sealed to the sheet flat portion 71 (flange portion 27) around each of the storage portions 16 of the sheet forming container 70 (see FIG. 31B).

Thereafter, the sheet flat portion 71 is cut along the individual cut scheduled line 13 (see FIG. 23), and unnecessary portions of the sheet flat portion 71 are removed, thereby obtaining the container 10 with a lid shown in FIGS. 25 and 26. (See FIG. 31 (c)). At this time, each bent portion 75 is also separated from the lidded container 10.

As described above, in the step of sealing the lid member 51 (see FIG. 31B) and the step of cutting the sheet flat portion 71 along the planned individual cut line 13 (see FIG. 31C), the bent portion is also provided. 75 is elastically deformed in the third direction D3, and each housing portion 16 moves along the third direction D3. Therefore, even if the pitch of the storage section 16 is shifted due to shrinkage, the position of the storage section 16 is adjusted in the step of sealing the lid member 51 or the step of cutting the sheet flat section 71. Therefore, the positioning of the housing portion 16 can be performed accurately.

As described above, according to the second embodiment, the sheet flat portion 71 is provided with the bent portion 75 extending along the fourth direction D4. In the sheet flat portion 71, cut lines 76 are formed on both sides of the accommodation portion 16 in the fourth direction D4, and the cut lines 76 are cut to the bent portions 75, respectively. For this reason, in the post-processing step of the sheet forming container 70 having the multiple accommodation sections 16, the position of the accommodation section 16 can be moved along the third direction D3. Accordingly, even if the pitch of the storage section 16 is shifted due to shrinkage, the shift in the pitch of the storage section 16 can be corrected in the post-processing step, and stable post-processing can be performed. . As a result, it is possible to prevent the seal position from being shifted in the post-processing step, and the position of the blade 94 where the half cut is to be made from deviating from the predetermined position.

According to the second embodiment, at least one bent portion 75 is disposed between the two housing portions 16 in the third direction D3. Thereby, in the post-processing step, the pitch between the housing portions 16 can be corrected, the positioning of the housing portion 16 can be performed accurately, and more stable post-processing can be performed.

According to the second embodiment, the bent portion 75 has a substantially V shape in a sectional view. Thereby, the angle of the V-shape of the bent portion 75 can be changed, and the inner portions 73 located on both sides of the bent portion 75 in the third direction D3 can be moved along the third direction D3.

Further, according to the second embodiment, the sheet flat portion 71 has a rectangular shape in plan view, the long side 71a of the rectangle is parallel to the third direction D3, and the short side 71b of the rectangle is in the fourth direction D4. Parallel. This makes it possible to adjust the position of the storage section 16 along the longitudinal direction (the third direction D3) of the sheet flat section 71, in which the degree of shrinkage tends to vary when the sheet molded container 70 is manufactured.

Further, according to the second embodiment, the sheet flat portion 71 is separated from the outer portion 72 and the inner portion 73 by the cut line 76, and the inner portion 73 is relatively movable with respect to the outer portion 72. . Thereby, the position of the accommodation portion 16 arranged in the inner portion 73 can be adjusted along the third direction D3. On the other hand, since the outer portion 72 is not substantially deformed, the rigidity of the sheet-formed container 70 is prevented from being reduced, and it is possible to prevent the handling and conveyance of the sheet-formed container 70 from being hindered.

(Modification)
Next, a modification of the second embodiment will be described with reference to FIGS. 32 to 35, the same parts as those in the second embodiment shown in FIGS. 23 to 31 are denoted by the same reference numerals, and detailed description is omitted.

(Modified example of bent portion)
FIGS. 32 to 34 are cross-sectional views showing various modified examples of the bent portion 75 of the second embodiment.

底面 As shown in FIG. 32A, the bottom surface 75a of the bent portion 75 may be formed flat. The bottom surface 75 a of the bent portion 75 is located parallel to the bottom 22 of the housing 16. In this case, the bent portion 75 can be easily elastically deformed in the third direction D3, and the movable range of each accommodation portion 16 in the third direction D3 can be increased.

屈曲 As shown in FIG. 32 (b), the bent portion 75 may be formed in a substantially U shape in cross section. In this case, the bent portion 75 can be easily elastically deformed in the third direction D3, and the movable range of each accommodation portion 16 in the third direction D3 can be increased. Further, the formability of the bent portion 75 by sheet forming can be improved.

屈曲 As shown in FIGS. 33A and 33B, the bent portion 75 may be formed in a substantially W-shape in a sectional view. Specifically, the bent portion 75 may include two portions that are substantially V-shaped when viewed in cross section (see FIG. 33A), and may include two portions that are substantially U-shaped when viewed in cross section. Good (see FIG. 33B). In this case, the bent portion 75 can be easily elastically deformed in the third direction D3, and the movable range of each accommodation portion 16 in the third direction D3 can be increased. In addition, the bent portion 75 may include three or more substantially V-shaped portions in cross-section or three or more substantially U-shaped portions in cross-section.

As shown in FIGS. 34A and 34B, the bent portion 75 is formed in a substantially W shape in cross section, and the central portion 75b of the bent portion 75 is lower than the sheet flat portion 71 (minus in the fifth direction D5). Side). Specifically, the bent portion 75 may include two substantially V-shaped portions in cross section (see FIG. 34A), and may include two substantially U-shaped portions in cross section. Good (see FIG. 34B). In this case, the bent portion 75 can be easily elastically deformed in the third direction D3, and the movable range of each accommodation portion 16 in the third direction D3 can be increased. Further, the formability of the bent portion 75 by sheet forming can be improved.

(Modified example of sheet molded container)
FIGS. 35A and 35B are schematic plan views showing various modified examples of the sheet-formed container of the second embodiment.

In FIG. 35A, the bent portion 75 is provided between the outermost housing portion 16 in the third direction D3 and each second direction side 71b, and is provided between the housing portions 16. Not been. In this case, the plurality of housing sections 16 provided in the inner portion 73 can be moved together in the third direction D3, and the positions of the housing sections 16 can be adjusted collectively. In addition, since the interval between the storage sections 16 in the third direction D3 can be reduced, the storage sections 16 can be efficiently arranged in the sheet forming container 70.

In FIG. 35 (b), the long side 71c of the sheet flat portion 71 is parallel to the fourth direction D4, and the short side 71d of the sheet flat portion 71 is parallel to the third direction D3. ing. In this case, the position of the storage section 16 can be moved along the short side direction (third direction D3).

Other configurations are substantially the same as the configuration of the sheet molded container 70 shown in FIGS. 23 and 24.

The present disclosure is not limited to the second embodiment as it is, and can be embodied by modifying constituent elements in an implementation stage without departing from the scope of the invention. Various inventions can be formed by appropriately combining a plurality of components disclosed in the second embodiment. Some components may be deleted from all the components shown in the second embodiment.

The method for manufacturing a container with a lid described in the second embodiment and its modifications may be applied to the method for manufacturing a container with a lid having the features described in the first embodiment described above, and is described in the first embodiment. The present invention may be applied to a method for manufacturing a container with a lid that does not have the feature of (1).

DESCRIPTION OF SYMBOLS 10 Container 16 with a lid 16 Storage part 16a Arc-shaped part 16b Concave part 20 Container 21 Body 22 Bottom part 221 Depression 23 Side 24 Depression 25 Base 26 Deepest part 263 Boundary part 27 Flange part 271 Outer edge 271a Parallel part 271b Groove parallel part 271y Outer projecting part 272 Inner edge 272a Arc part 272b Rectangular part 272x Inner projecting part 273 Flat part 274 Upper surface 28 Convex part 29 Groove part 29a Opening 29b Flow path part 30 Closed seal part 31 Main seal part 34 Projected seal part 35 First projected seal Part 36 second protruding seal part 37 tip part 38 groove side edge 38a inner edge 38b outer edge 39 groove outer seal 40 weak part 41 notch 50 lid 51 lid material 60 unsealed part 70 sheet molding container 71 Sheet flat portion 71a First direction side 71b Second direction side 72 Outside portion 3 inner portion 75 bent portion 76 cut line

Claims

Including a bottom portion and a side portion, a body portion defining a housing portion, and a flange portion connected to an upper portion of the side portion so as to surround the housing portion, wherein the flat portion is more than the flat portion. Positioned on the bottom side, from the inner edge, which is the edge of the flange portion on the housing portion side, toward the outer edge, which is the edge opposite to the inner edge of the flange portion, so as not to reach the inner edge and the outer edge. A container having an extending groove portion and a flange portion including:
A lid that covers the housing section and the groove section of the container,
A closing seal portion that joins the lid to an upper surface of the flat portion of the flange portion of the container so as to seal the housing portion and the groove portion from the outside, and is located between the groove portion and the housing portion. And a closing seal portion including a protruding seal portion protruding toward the storage portion of the container,
The closure seal has a groove side edge surrounding at least the groove,
The container with a lid, wherein the groove side edge has an inner edge side end located on the inner edge side and an outer edge side end located on the outer edge side as viewed in a direction in which the groove extends.
Between the portion of the flange portion overlapping the inner edge and the portion overlapping the outer edge, a fragile portion is provided for breaking the flange in a direction intersecting the direction in which the groove extends. The container with a lid according to claim 1, which is provided.
The container with a lid according to claim 2, wherein the fragile portion is provided in at least the groove portion of the flange portion, and breaks the groove portion in a direction intersecting a direction in which the groove portion extends.
The container with a lid according to claim 3, wherein the fragile portion is provided on the flange portion so as to straddle the groove portion and the flat portion.
The groove side edge portion of the closing seal portion, the groove portion of the flange portion, and a part of the flat portion of the flange portion that is located closer to the outer edge than the groove portion when viewed in the direction in which the groove portion extends. ,
The fragile portion is provided at least on the portion of the flat portion of the flange portion, which is located closer to the outer edge than the groove portion as viewed in a direction in which the groove portion extends, and is provided in a direction intersecting a direction in which the groove portion extends. The container with a lid according to claim 2, wherein the container is partially broken.
The container with a lid according to any one of claims 2 to 5, wherein the fragile portion includes a half cut provided on a lower surface side of the flange portion.
The container with a lid according to any one of claims 2 to 6, wherein the lid has an easy tearing property in a direction in which the fragile portion extends at least in a portion overlapping the fragile portion.
The container with a lid according to claim 7, wherein the tensile strength of the lid in the direction in which the fragile portion extends is greater than the tensile strength of the lid in a direction perpendicular to the direction in which the fragile portion extends.
The fragile portion extends to reach the outer edge of the flange portion,
The container with a lid according to any one of claims 2 to 8, wherein a notch is provided in a portion of the outer edge of the flange portion that the weak portion reaches.
The container with a lid according to any one of claims 1 to 9, wherein the volume of the groove is 1% or more of the volume of the housing.
The side portion of the container is provided with a concave portion that is recessed toward the storage portion,
The container with a lid according to any one of claims 1 to 10, wherein the protruding seal portion is at least partially located within the concave portion on the side portion of the container when viewed along a vertical direction.