JP2019112113A - Container with lid - Google Patents

Abstract

To provide a container with a lid having openability.SOLUTION: The container with a lid comprises: a container which includes a bottom and a side part, and has a shank which defines a storage part, and a flange part which is continuously provided at an upper portion of the side part so as to surround the storage part; a lid which covers the storage part of the container; and a closing seal part which is positioned between a top face of the flange part of the container and an underside of the lid, and joins the lid to the flange part of the container. The side part of the container is provided with a recess which is recessed toward the storage part. The closing seal part includes a major seal portion having one end and the other end, and a projection seal portion which has one end connected to one end of the major seal portion and the other end connected to the other end of the major seal portion, and projects toward the storage part of the container. The projection seal portion is positioned at least partially in the recess of the side part of the container when viewed along a vertical direction. The recess of the side part of the container is so configured as to be deformed when pressing the bottom of the container.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lidded container comprising a container in which a container is formed, and a lid joined to the container by a closing seal so as to cover the container. In particular, the present invention provides a lidded container configured to exert an external force on the bottom and sides of the container to deform the container and thereby raise the pressure inside the container, thereby causing the closure seal to partially separate. About.

  2. Description of the Related Art Conventionally, many containers with lids which contain fluid contents such as liquid and powder in containers made of plastic and sealed with lids made of films and the like are on the market. Among such lidded containers, particularly small ones are also called potions, potted containers, pots and the like. Small lidded containers are used to contain various contents such as gum syrup, coffee fresh, seasonings, concentrated beverages and the like.

  As a form of a lidded container, for example, as disclosed in Patent Document 1, an external force is applied to the bottom or side of the container to deform the container, thereby raising the pressure inside the container, thereby closing the container. A type of seal is known in which the seals are configured to partially separate. According to such a lidded container, for example, the contents can be taken out by separating the closing seal by pressing the side or bottom of the container with one hand. Therefore, it is possible to easily take out the contents as compared with a type of lidded container in which it is necessary to remove the lid with one hand while holding the container with one hand. Moreover, when separating a closing seal part, it can suppress that a content adheres to a hand. In addition, as disclosed in Patent Document 1, by setting a lidded container containing concentrated beverage in an apparatus such as a diluted beverage production apparatus, and pressing the bottom and side portions of the container using the apparatus It is also possible to produce a beverage of the desired concentration.

  In the lidded container disclosed in Patent Document 1, a part of the annular closing seal for joining the lid to the flange of the container is a projecting seal projecting radially inward of the housing of the container. It has become. In this case, when the pressure inside the container rises, the projecting seal separates earlier than the other parts of the closing seal. Therefore, the user can predict from which position in the storage unit the contents are likely to be discharged.

JP, 2015-9051, A

  When the bottom or the side of the container is pressed, the container is deformed inward, the volume of the container is reduced, the pressure inside the container is increased, and the projecting seal part is separated, and the container with lid is opened. In order to be able to open the lidded container with less pressure, it is preferable that deformation of the container occurs so as to efficiently increase the pressure inside the container.

  An object of the present invention is to provide a lidded container which can effectively solve such problems.

  According to the present invention, there is provided a container including a body including a bottom and a side and defining a housing, and a flange continuously provided at an upper portion of the side so as to surround the housing, and the container The container, comprising: a lid covering the housing portion; and a closing seal portion positioned between the upper surface of the flange portion of the container and the lower surface of the lid and joining the lid to the flange portion of the container; The side portion of the housing is provided with a recess recessed toward the housing portion, and the closing seal portion is a main seal portion having one end and the other end, and one end connected to the one end of the main seal portion And a protruding seal portion having the other end connected to the other end of the main seal portion and protruding toward the storage portion of the container, the protruding seal portion being viewed along the vertical direction At least partially within the recess in the side of the container. Is located in the recess of said side of said container, said recess when pushing the bottom portion of the container is configured to be deformed is suppressed, a container with a lid.

  In the lidded container according to the present invention, the recess in the side portion of the container includes a pair of base portions and a deepest portion extending in a direction from the flange portion toward the bottom portion, before the pressing force is applied and deformed. The height of the container is referred to as a pre-deformation height H1, and the pair of base portions when the bottom portion is pressed toward the flange portion until the height of the container becomes 0.9 × H1 among the deepest portions When a portion that deforms outward to a position corresponding to a position is referred to as a boundary portion and a distance in the vertical direction from the flange portion to the boundary portion is referred to as a shape-retaining height K, a shape-retaining height K The front height H1 may be established.

  In the lidded container according to the present invention, the recess of the side portion of the container includes a pair of base portions and a deepest portion extending in a direction from the flange portion toward the bottom portion, and the thickness T2 of the side portion at the deepest portion is The thickness may be one time or less of the thickness T1 of the side portion of the base.

  In the lidded container according to the present invention, both the base and the deepest portion of the recess are inclined with respect to the vertical direction so as to be displaced toward the center of the container from the flange toward the bottom. The difference between the inclination angle of the base and the inclination angle of the deepest portion may be 7 ° or less.

  In the lidded container according to the present invention, both the base and the deepest portion of the recess may extend from the flange or the vicinity of the flange to the bottom or the vicinity of the bottom.

  According to the present invention, deformation of the container can be generated at a place where the pressure inside the container can be efficiently increased. Therefore, the lidded container can be opened with a smaller pressing force.

It is a top view showing a container with a lid in an embodiment of the present invention. It is a bottom view showing a container with a lid in an embodiment of the present invention. It is a front view which shows the case where the container with a lid | cover of FIG. 1 is seen along arrow III. It is a side view which shows the case where the container with a lid | cover of FIG. 1 is seen along arrow IV. It is a top view which expands and shows the protrusion seal part of the closing seal part of the lidded container of FIG. It is a cross-sectional view which shows the case where the container with a lid | cover of FIG. 3 is cut | disconnected along line VI-VI. It is a longitudinal cross-sectional view which shows the case where the container with a lid | cover of FIG. 3 is cut | disconnected along line VII-VII. It is a perspective view which shows a mode that pressing force is applied to the bottom part of a container. It is a perspective view showing the container changed based on pressure.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9. First, with reference to FIGS. 1 to 4, the entire lidded container 10 in the present embodiment will be described. FIG. 1 is a plan view showing the lidded container 10 viewed from the lid 50 side, and FIG. 2 is a bottom view showing the lidded container 10 viewed from the bottom 22 side of the container 20. 3 is a front view showing the lidded container 10 of FIG. 1 seen along the arrow III, and FIG. 4 shows the lidded container 10 of FIG. 1 seen along the arrow IV. FIG.

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

(container)
Next, the container 20 will be described. As shown in FIGS. 1 to 4, the container 20 includes a bottom portion 22 and a side portion 23, and is continuously provided at an upper portion of the side portion 23 so as to surround the receiving portion 16 and a body portion 21 defining the receiving portion 16. And the flange portion 27. The side portion 23 is a portion erected from the bottom portion 22 so as to extend around the circumference of the bottom portion 22 over the entire circumference. The flange portion 27 is continuous with the upper portion of the side portion 23 so as to surround the housing portion 16 and extends horizontally outward. The lid 50 described above is joined to the upper surface 273 of the flange portion 27 of the container 20. In the present specification, terms such as "side", "top", "upper surface", "lower surface", "vertical direction", "horizontal direction", and the like mean that the bottom 22 of the container 20 is positioned downward. The positions and directions of the lidded container 10, the container 20, the lid 50 and their constituent elements are indicated on the basis of the state where the attached container 10 and the container 20 are placed.

  1 to 4 show an example in which the bottom 22 and the side 23 of the container 20 are configured such that the housing 16 has a substantially circular outline in a plan view. However, the shape of the container 20 is not particularly limited as long as the desired contents can be accommodated in the container 20. For example, the storage unit 16 may have a rectangular or polygonal contour in a plan view. Further, the contour of the bottom 22 and the contour of the flange 27 and the lid 50 may or may not be similar.

  The contents to be contained in the container 20 are not particularly limited as long as they have fluidity such as liquid, viscous material and powder. One feature of the lidded container 10 according to the present embodiment is that the lid 50 can be partially peeled off 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. And For this reason, what is accommodated and used for the container 20 of the small capacity | capacitance of the extent which can press with one hand as a content is preferable. For example, contents such as gum syrup, coffee fresh, seasoning, concentrated beverage and the like are preferably accommodated in the container 20. The contents may be a kinematic mass. The filling rate of the contents contained in the container 20 is, for example, 60% or more. The small-capacity container 20 means that the size of the storage portion 16 in a plan view is 60 mm or less, more preferably 40 mm or less.

  As shown in FIGS. 1 and 2, the flange portion 27 of the container 20 has a substantially circular outer edge 271 and an inner edge 272. The thickness of the flange portion 27 is, for example, 150 μm or more and 700 μm or less.

  As shown in FIGS. 2 and 3, the flange portion 27 may be provided with a step portion 29 extending toward the outer edge 271 from a position between the outer edge 271 and the inner edge 272. The stepped portion 29 is a portion of the flange portion 27 which is shifted to the bottom 22 side more than the peripheral portion. The stepped portion 29 can contribute to forming a non-sealed portion between the flange portion 27 and the lid 50. In addition, the stepped portion 29 can also function as a flow path when the contents 15 contained in the container 20 are discharged to the outside.

  As shown in FIGS. 1 and 2, the inner edge 272 of the flange portion 27 may include a convex portion 28 projecting toward the housing portion 16. A protruding seal portion 34 of the closing seal portion 30 described later is formed on the convex portion 28 of the flange portion 27.

  As shown in FIGS. 1 and 2, the side portion 23 of the container 20 is provided with a recess 24 recessed toward the housing portion 16. The recess 24 includes a pair of base portions 25 and a deepest portion 26 extending in the direction from the flange portion 27 toward the bottom portion 22 as shown in FIG. 3. The deepest portion 26 is a portion of the recess 24 that protrudes most toward the accommodation portion 16 (the center point C side). In the example shown in FIGS. 1 and 2, the recess 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. The recess 24 may include an arc-shaped portion having a similar radius of curvature also in a cross-sectional view shown in FIG. 6 described later.

  In the present embodiment, the recess 24 extends from the flange 27 to the bottom 22 as shown in FIGS. 3 and 4. In this case, as shown in FIG. 1 and FIG. 2, the inner edge 272 of the flange portion 27 includes the above-described convex portion 28 that protrudes toward the accommodation portion 16. The “inside” is the side facing the center point C when the lidded container 10 is viewed along the normal direction of the upper surface 273 of the flange portion 27. The “outside” is the side from the center point C toward the flange portion 27 when the lidded container 10 is viewed along the normal direction of the upper surface 273 of the flange portion 27. In the following description, the normal direction of the upper surface 273 of the flange portion 27 is also referred to as “vertical direction”. In addition, viewing along the vertical direction is also referred to as plan view.

(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 the entire circumference so as to surround the receiving portion 16 of the container 20 in a plan view. The closing seal 30 is located between the upper surface 273 of the flange 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 273 of the flange portion 27 of the container 20 by the closing seal portion 30. In the present specification, "joining" is a concept including both welding and adhesion. By "welding" is meant that the closure seal 30 is configured by at least partially melting at least one of the container 20 or the lid 50. Also, “adhesion” means that the closure seal 30 is constituted by components separate from the container 20 and the lid 50, such as an adhesive. The closing seal portion 30 is hatched in the plan view or the bottom view of FIGS. 1 and 2 and FIG. 9 described later.

  As shown in FIG. 1, the closing seal 30 extending annularly to enclose the housing 16 includes a main seal 31 and a projecting seal 34. The protruding seal portion 34 is a seal portion of the closing seal portion 30 which protrudes toward the housing portion 16. In the present embodiment, the protruding seal portion 34 is at least partially located in the recess 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 recess 24 when viewed along the vertical direction D1. The main seal portion 31 is a seal portion of the closing seal portion 30 other than the protruding seal portion 34, and is provided along the inner edge 272 of the flange portion 27 in the present embodiment.

  The main seal portion 31 and the projecting seal portion 34 each have one end and the other end. One end of the main seal portion 31 and one end of the protruding seal portion 34 are connected at a first point described later. Further, the other end of the main seal portion 31 and the other end of the protruding seal portion 34 are connected at a second point described later. In other words, the main seal portion 31 and the protruding seal portion 34 are distinguished with the first point and the second point as boundaries. The definition of the first point and the second point will be described later.

  The protruding seal portion 34 will be described in detail with reference to FIG. FIG. 5 is an enlarged plan view of 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 present embodiment, when the distance from the inner edge of the closing seal portion 30 to the center point C of the accommodation portion 16 is measured clockwise at each position of the closing seal portion 30, the protruding seal portion 34 It is a part that shows a change that starts to decrease from the first constant value and then becomes the minimum value, then the distance starts to increase and then return to the second constant value. In FIG. 5, 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 exhibits the minimum value, and the distance returns to the second constant value. The second point is represented by reference numerals 351, 371 and 361, respectively. The inner edge of the closing seal portion 30 means an edge of the edge of the closing seal portion 30 located on the side of the housing portion 16. Further, the outer edge of the closing seal portion 30 is an edge of the edge of the closing seal portion 30 located on the opposite side of the inner edge.

  The protruding seal portion 34 includes a leading end portion 37 and a first protruding seal portion 35 and a second protruding seal portion 36 arranged to sandwich the leading end portion 37. The tip end portion 37 is a portion of the projecting seal portion 34 closest to the central point C in a plan view of the housing portion 16 of the container 20, and is a portion including the above-mentioned minimum point 371. In addition, the first projecting seal portion 35 is a portion of the closing seal portion 30 which extends from the first point 351 to the tip end portion 37. The second projecting seal portion 36 is a portion of the closing seal portion 30 which extends from the second point 361 to the tip end portion 37.

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

  In FIG. 5, the symbol W 1 represents the width of the main seal portion 31, and the symbol W 2 represents the width of the leading end portion 37 of the protruding seal portion 34. The width W 2 of the tip end portion 37 of the protruding seal portion 34 is smaller than the width W 1 of the main seal portion 31. For example, the difference between the width W2 of the leading end portion 37 and the width W1 of the main seal portion 31 is 2 mm or more. Further, the ratio (= W2 / W1) of the width W2 of the 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 in the housing portion 16 rises, particularly the tip end portion 37 of the protruding seal portion 34 separates earlier than the main seal portion 31 and the lid 50 is peeled off from the flange portion 27 at the position of the tip end portion 37 . Preferably, as shown in FIG. 5, a non-sealed portion in which the lower surface of the lid 50 and the upper surface of the flange portion 27 are not joined to a portion from the tip portion 37 of the protruding seal portion 34 to the outer edge 271 of the flange portion 27 32 exist. In the present embodiment, the non-sealed portion 32 linearly extends from the tip end portion 37 toward the outer edge 271 of the flange portion 27. Such a non-sealed portion 32 is realized by providing the flange portion 27 with the step portion 29 reaching the outer edge 271 as described above. The step 29 is provided at a position outside the projecting seal 34 in the flange 27. Although not shown, a notch may be provided in the flange portion 27 instead of the step portion 29.

  As shown by a dotted line in FIG. 5, the portion of the main seal portion 31 connected to the first projecting seal portion 35 extends along the outer edge 271 of the flange portion 27 beyond the first point 351 to the non-sealed portion 32. It may be Similarly, the portion of the main seal portion 31 connected to the second projecting seal portion 36 may extend beyond the second point 361 along the outer edge 271 of the flange portion 27 to the non-sealed portion 32.

(Details of container recess)
Subsequently, the recess 24 of the container 20 will be described in more detail. 6 is a cross-sectional view showing the lidded container 10 of FIG. 3 cut along the line VI-VI.

  As described above, the recess 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 most distant from the tangent L1 or tangent plane when the tangent L1 or tangent plane circumscribed to the pair of bases 25 is virtually drawn. Ru. The concave portion 24 including the pair of base portions 25 and the deepest portion 26 functions as a rib, and thus is less likely to be deformed as compared with the other portions of the side portion 23. That is, the recess 24 has shape retention. Therefore, as described later, when a pressing force is applied to the body portion 21 of the container 20, the deepest portion 26 of the recess 24 is not easily deformed outward.

  In FIG. 6, reference numeral T 1 represents the thickness of the side portion 23 in the base 25, and reference numeral T 2 represents the thickness of the side portion 23 in 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, thickness T2 may be 1 time or less of thickness T1. In order to stably have high shape retention as compared to the other portions of the side portion 23, the difference between the thickness T2 and the thickness T1 is preferably small.

  FIG. 7 is a longitudinal sectional view showing a case where the lidded container 10 of FIG. 3 is cut along line VII-VII. As shown in FIG. 7 and FIG. 4 described above, both the base 25 and the deepest portion 26 of the recess 24 are displaced relative to the vertical direction D1 so as to be displaced toward the center of the container 20 from the flange 27 toward the bottom 22. It is inclined. As shown in FIG. 7, the inclination angle θ2 of the deepest portion 26 is an angle formed by a straight line L2 connecting the upper end 261 of the deepest portion 26 and the lower end 262 of the deepest portion 26 with respect to the vertical direction D1. 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.

  In addition, when producing the container 20 by the sheet forming method, thickness T1 of the side part 23 in the base 25 becomes small, so that the inclination angle of the base 25 becomes small. This is because the smaller the inclination angle of the base 25, the smaller the area of the sheet used in forming the sheet to form the side portion 23 of the base 25. Similarly for the deepest portion 26, the smaller the inclination angle of the deepest portion 26, the smaller the thickness T 2 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, 3 ° or more. In addition, when the inclination angle of the deepest part 26 becomes large too much, the volume of the accommodating part 16 will become small, and it is unpreferable. Therefore, the inclination angle of the deepest portion 26 is preferably 10 ° or less, for example.

  Moreover, in order to improve the shape retention of the concave portion 24 in the deepest portion 26, the difference between the inclination angle of the base 25 and the inclination angle of the deepest portion 26 is preferably small, for example, 7 ° or less. As a result, the shape retention of the recess 24 can be stably increased as compared with the other portions of the side portion 23.

  Next, 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 how 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 can be obtained, for example, by peeling the lid 50 of the lidded container 10 from the container 20 without deforming the container 20 and removing the contents from the container 20.

  In FIG. 8, the code | symbol H1 represents the height (it is also called height before a deformation | transformation) of the container 20 before pressing force F is added and it deform | transforms. The pre-deformation height H1 is the distance in the vertical direction from the lowermost portion of the bottom portion 22 to the upper portion of the side portion 23 (the portion where the side portion 23 and the flange portion 27 are connected). In FIG. 9, the code | symbol H2 represents the height (it is also called height after a deformation | transformation) of the container 20 after deform | transforming based on pushing pressure force. Here, the pressing force F is adjusted so that the height H2 after deformation is 0.9 × H1.

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

  As described above, the pressing force applied to the bottom 22 of the container 20 causes the deformation of the bottom 22 toward the flange 27 and the deformation of the side 23 outward. The deformation of the bottom 22 to the flange 27 side contributes to the increase of the pressure of the container 20. On the other hand, the deformation of the side 23 to the outside acts to inhibit the pressure increase of the container 20. Therefore, in order to efficiently increase the pressure inside the container 20, the side portion 23 is suppressed from being deformed outward when the bottom portion 22 of the container 20 is pressed toward the flange portion 27. It is preferable to constitute 23. Here, in the present embodiment, the side portion 23 is provided with the recess 24. The outward deformation of the deepest portion 26 of the recess 24 acts to further inhibit the increase in pressure of the container 20 as compared with the outward deformation of the other portion of the side portion 23.

  In consideration of such problems, in the present embodiment, in particular, it is proposed to configure the recess 24 so as to suppress deformation of the recess 24 when the bottom 22 of the container 20 is pressed. Specifically, when the bottom 22 of the container 20 is pressed until the post-deformation height H 2 becomes 0.9 × H 1, the shape-retaining height K indicated by a symbol K in FIG. 9 is 0.5 × pre-deformation height It is proposed that the recess 24 be configured to have a height H1 or more. Here, the shape-retaining height K is a distance from the flange portion 27 to the boundary 263 of the deepest portion 26 in the vertical direction D1. 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 H 2 after deformation becomes 0.9 × H 1 in the deepest portion 26 It is a portion that is deformed outward (to a tangent or tangent position circumscribed to the pair of bases 25). By forming the recess 24 in this manner, it is possible to suppress that the pressing force applied to the bottom 22 of the container 20 is used for the deformation of the deepest portion 26 of the recess 24. By this, the pressure inside the container 20 can be efficiently increased, and the lidded container 10 can be opened with a smaller pressing force.

  Various specific methods can be considered as a specific method for forming the recess 24 so that the shape retention height K ≧ 0.5 × pre-deformation height H1 is satisfied. For example, adjusting the absolute value of the thickness T2 of the side portion 23 in the deepest portion 26 or adjusting the ratio of the thickness T2 to the thickness T1 of the side portion 23 in the base 25 can be considered. 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 the material which comprises the container 20 and the lid | cover 50 is demonstrated.

  As a material which comprises the container 20, plastics, such as a polypropylene, a polystyrene, a polyethylene terephthalate, can be used. For example, when producing the container 20 by a sheet forming method, an unstretched plastic film such as unstretched polypropylene or unstretched nylon can be used as a sheet material. The sheet material may be comprised of a single layer or may include multiple layers.

  The material making up the lid 50 is chosen such that the lower surface of the lid 50 can be joined to the upper surface 273 of the flange 27 of the container 20. For example, the lid 50 includes a base material layer and a sealant layer that constitutes the lower surface of the lid 50. The thickness of the lid 50 is, for example, not less than 20 μm and not more than 100 μm. As a material which comprises the base material layer of the lid | cover 50, polyester-type resin, such as a polyethylene terephthalate, polyamide-type resin, such as nylon, a polypropylene etc. can be used. Moreover, as a material which comprises a sealant layer, polypropylene, mixed resin of polypropylene and polyethylene, etc. can be used. A mixed resin of polypropylene and polyethylene is a material having a relatively small bonding strength, also referred to as an easy peel sealant. When both the substrate layer and the sealant layer contain polypropylene, biaxially oriented polypropylene is used in the substrate layer, and unstretched polypropylene is used in the sealant layer.

(Method of manufacturing a container with a lid)
Next, an example of a method of manufacturing the lidded container 10 will be described.

  First, the container 20 is manufactured using a sheet forming method. For example, although not shown, a male mold is disposed on the inner surface side of the sheet material, and a female mold is disposed on the outer surface side of the sheet material. Subsequently, in a state in which the portion constituting the flange portion 27 in the sheet material is fixed, the male mold is relatively moved toward the female mold, and the portion constituting the trunk portion 21 in the sheet material is converted to the female mold Push in. The container 20 which has the trunk | drum 21 and the flange part 27 can be obtained by this.

  Subsequently, after the content is filled in the storage portion 16 defined by the body portion 21, the lid 50 is placed on the upper surface 273 of the flange portion 27 of the container 20. Thereafter, the 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. Thereby, the lower surface of the lid 50 can be welded to the upper surface 273 of the flange portion 27 of the container 20 through the closing seal portion 30. Thereafter, the container 20 and the lid 50 are cut out into a predetermined shape as required. Thus, the lidded container 10 can be obtained.

  In addition, as a method of producing the container 20, well-known methods, such as the injection molding method, can be used suitably besides the above-mentioned sheet forming method.

(How to open a container with a lid)
Next, an example of a method of opening the lidded container 10 will be described.

  Initially, the user applies pressure to the bottom 22 of the container 20. For example, with the thumb of one hand on the bottom 22 and the other finger on one hand on the lid 50, the lidded container 10 is pressed.

  When the bottom 22 of the container 20 is pressed toward the flange 27, the container 20 is deformed so that the bottom 22 is displaced toward the flange 27. At this time, the side 23 also partially bulges outward. Here, in the present embodiment, as described above, the recess 24 is configured such that displacement of the deepest portion 26 of the recess 24 outward is suppressed. For this reason, it is possible to suppress that the pressing force applied to the bottom portion 22 of the container 20 is used for the deformation of the deepest portion 26 of the recess 24. By this, the pressure inside the container 20 can be efficiently increased, and the lidded container 10 can be opened with a smaller pressing force.

  Further, in the present embodiment, the closing seal portion 30 has the projecting seal portion 34 including the tip portion 37. Therefore, the tip end portion 37 of the protruding seal portion 34 can be separated earlier than the main seal portion 31 to form a gap between the flange portion 27 of the container 20 and the lid 50 at the position of the tip end portion 37. . This allows the contents to be removed from the lidded container at the intended position, i.e. at the position of the projecting seal 34.

  Further, in the present embodiment, the protruding seal portion 34 is provided on the convex portion 28 of the flange portion 27. For this reason, when the pressure inside the container 20 increases, the force to separate the seal portion not only to the tip end portion 37 of the protrusion seal portion 34 but also to the first protrusion seal portion 35 and the second protrusion seal portion 36 It is easy to join. Also in this respect, the lidded container 10 can be opened with a smaller pressing force.

  Further, in the present embodiment, the non-sealed portion 32 is present in a portion from the tip end portion 37 of the protruding seal portion 34 to the outer edge 271 of the flange portion 27. For this reason, the content which flowed in into the non-sealed part 32 from the accommodating part 16 can be guide | induced outside through the part which isolate | separated among the protrusion seal parts 34. As shown in FIG.

  Further, in the present embodiment, the recess 24 is provided in the side portion 23 of the container 20. For this reason, compared with the case where the recessed part 24 is not provided in the side part 23, the volume of the accommodating part 16 can be enlarged. Thereby, more contents 15 can be accommodated in the container 20.

  As described above, according to the present embodiment, it is possible to suppress the decrease in the openability of the lidded container 10 while expanding the volume of the housing portion 16 by the concave portion 24 of the side portion 23 of the container 20.

(Modification of the recess on the side)
In the above-mentioned embodiment, although the example which a pair of base 25 and deepest part 26 of crevice 24 has extended from flange part 27 to bottom 22 is shown, it is not restricted to this. For example, the pair of base portions 25 and the deepest portion 26 of the recess 24 may not extend to the flange portion 27. In other words, the upper end 251 of the base 25 and the upper end 261 of the deepest portion 26 may be located below the flange portion 27. Further, the pair of base portions 25 and the deepest portion 26 of the recess 24 may not extend to the bottom portion 22. In other words, the lower end 252 of the base 25 and the lower end 262 of the deepest portion 26 may be located above the bottom 22.

  Preferably, both the base 25 and the deepest portion 26 of the recess 24 extend from the vicinity of the flange portion 27 or the flange portion 27 to the vicinity of the bottom portion 22 or the bottom portion 22. “In the vicinity of the flange portion 27” means the distance from the upper end 251 of the base 25 to the flange portion 27 in the vertical direction D1, and the distance from the upper end 261 of the deepest portion 26 to the flange portion 27 in the vertical direction D1. It means that it is 1 mm or less. Further, “in the vicinity of the bottom 22” means that the distance from the lower end 252 of the base 25 to the bottom 22 in the vertical direction D1 and the distance from the bottom 262 to the bottom 22 of the deepest portion 26 in the vertical direction D1 are 1 mm. It means that it is the following.

DESCRIPTION OF SYMBOLS 10 container 15 content 16 accommodation part 20 container 21 body part 22 bottom part 23 side part 231 outer surface 232 inner surface 24 recessed part 25 upper end 252 lower end 26 deepest part 261 upper end 262 lower end 263 boundary part 27 flange part 271 outer edge 272 inner edge 273 Upper surface 28 convex portion 29 step portion 30 closing seal portion 31 main seal portion 32 non-seal portion 34 projecting seal portion 35 first projecting seal portion 36 second projecting seal portion 37 tip portion 50 lid

Claims (5)

A container having a body portion including a bottom portion and a side portion and defining an accommodating portion, and a flange portion continuously provided at an upper portion of the side portion so as to surround the accommodating portion;
A lid covering the container of the container;
A closure seal located between the upper surface of the flange of the container and the lower surface of the lid and joining the lid to the flange of the container;
The side portion of the container is provided with a recess that is recessed toward the housing portion,
The container has a main seal having one end and the other end, one end connected to the one end of the main seal, and the other end connected to the other end of the main seal, the container And a protruding seal projecting toward the housing of the
The projecting seal is at least partially located in the recess in the side of the container when viewed along the vertical direction;
The container with a lid, wherein the recess in the side portion of the container is configured to suppress deformation of the recess when the bottom of the container is pressed. The recess in the side portion of the container includes a pair of bases and a deepest portion extending in a direction from the flange portion toward the bottom portion,
The height of the container before deformation due to application of pressure is referred to as the height H1 before deformation, and the bottom of the deepest portion until the height of the container reaches 0.9 × H1 is the flange portion When a portion that is deformed outward to a position corresponding to the pair of bases when pressed toward is referred to as a boundary portion, and a distance in the vertical direction from the flange portion to the boundary portion is referred to as a shape holding height K, The lidded container according to claim 1, wherein the shape retention height K ≧ 0.5 × the pre-deformation height H1 holds. The recess in the side portion of the container includes a pair of bases and a deepest portion extending in a direction from the flange portion toward the bottom portion,
The lidded container according to claim 1 or 2, wherein the thickness T2 of the side portion at the deepest portion is equal to or less than one time the thickness T1 of the side portion at the base. Both the base and the deepest portion of the recess are inclined with respect to the vertical direction so as to be displaced toward the center of the container from the flange to the bottom.
The lidded container according to claim 2 or 3, wherein a difference between an inclination angle of the base and an inclination angle of the deepest portion is 7 ° or less.   The lid according to any one of claims 2 to 4, wherein both the base and the deepest portion of the recess extend from the flange or the vicinity of the flange to the bottom or the vicinity of the bottom. Attached container.