JP2019014511A - Packaging container and lid member - Google Patents

Abstract

To provide a packaging container which is easy to take out contents and is difficult to spill.SOLUTION: A packaging container 1 comprises: a container part 10 having a flange 12 to surroundings of an opening portion 11 that opens in an upper face; and a lid member 20 formed by a peelable laminate between a lower layer part 40 including at least a heat adhesive resin layer 34 and an upper layer part 30 layered on the lower layer part 40, and covers the opening portion 11 by thermally adhering the heat adhesive resin layer 34 to the flange 12. The lid member 20 is arranged on the opening portion 11 and has a notch 41 which is cut in half as making the lower layer part 40 penetrate, and the lower layer part 40 remains on the flange 12 by peeling from the upper layer part 30 at the time of opening, and a plurality of covering pieces 42 which can downwardly displace the inner side by pushing are formed by the notch 41 in the lower layer part 40.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a packaging container in which a lid is thermally bonded to the upper surface of a container part. The present invention also relates to a lid member that is thermally bonded to the upper surface of the container portion.

  A conventional packaging container is disclosed in Patent Document 1. This packaging container includes a container part and a lid. A container part has a flange in the outer peripheral side of an opening part, and accommodates the content. The lid member is formed by laminating a base material layer and a heat-adhesive resin layer, and is sealed by heating on the flange.

  The lid member is provided with a gripping portion that protrudes to the outside. The gripping portion is gripped with fingers, and the lid material is peeled off from the container portion to open the packaging container.

JP 2013-249121 A (FIG. 1)

  However, according to the conventional packaging container described above, the contents spill out from the opening when the container part from which the lid member has been peeled off by opening is overturned when the contents are taken out. For this reason, there was a problem that the convenience of the packaging container was bad.

  An object of this invention is to provide the packaging container which can improve the convenience, and the cover material used for it.

  In order to achieve the above object, the present invention provides a container portion having a flange around an opening portion opened on the upper surface, a lower layer portion including at least a thermoadhesive resin layer, and an upper layer portion laminated on the lower layer portion. And a lid that covers the opening by thermally bonding the thermoadhesive resin layer to the flange, and the lid is disposed on the opening. And having a cut that is half-cut through the lower layer portion, and when opened, the lower layer portion peels off from the upper layer portion and remains on the flange, and the lower layer portion is pushed on the inner peripheral side by pushing. A plurality of covering pieces that can be displaced downward are formed by the cutting.

  In the packaging container having the above-described configuration, it is preferable that an outer peripheral end of the notch is arranged away from a peripheral edge of the opening.

  In the packaging container having the above-described configuration, it is preferable that the covering piece protrudes into a window portion that connects the outer peripheral ends of the cuts.

  Further, the present invention is the packaging container having the above-described configuration, wherein the lid member has a gripping portion protruding from the flange to the outer peripheral side, and the upper layer portion is in a peeling direction from the gripping portion toward the center of the opening. Peeling and at least one of two sides forming the top of the inner peripheral end of the covering piece is a straight line perpendicular to the peeling direction, or is inclined with respect to the peeling direction, and the inner peripheral side is peeled from the gripping part. Preferably, it consists of straight lines that are separated in the direction.

  Further, the present invention provides the packaging container having the above-described configuration, wherein the cut is formed in a cross shape or a Y shape, one side of the covering piece is parallel to the peeling direction, and an outer peripheral side is separated from the gripping portion in the peeling direction. Preferably it consists of.

  Further, the present invention provides the packaging container having the above-described configuration, wherein the cut has an annular annular portion, and when opened, the inside of the annular portion is detached together with the upper layer portion with respect to the outside to form a hole in the window portion. It is preferred if

  In the packaging container having the above-described configuration, it is preferable that at least a part of the cuts are formed in a perforated shape.

  In the packaging container having the above-described configuration, it is preferable that the upper layer portion has a barrier layer having a barrier property.

  Further, the lid material of the present invention is a lid material formed by a laminate that can be peeled between a lower layer part including at least a thermal adhesive resin layer and an upper layer part laminated on the lower layer part. A plurality of covering pieces that have a cut that penetrates and is half-cut and that can displace the inner peripheral side in the thickness direction by pressing are formed by the cut in the lower layer portion from which the upper layer portion has been peeled off. Yes.

  According to the packaging container of the present invention, the lid member that is thermally bonded to the flange of the container part has a cut that is half-cut through the lower layer part, and peels off from the upper layer part when opened and remains on the flange part. A plurality of covering pieces are formed which can be displaced downward by cutting. Thereby, a cover piece can be pushed in with a finger after opening, and the contents can be taken out easily. Moreover, when the container part falls down after opening, the contents can be prevented from being caught by the covering piece and spilling from the opening part. Therefore, the convenience of the packaging container can be improved.

  According to the lid material of the present invention, the contents can be easily taken out after opening the packaging container in which the lid material is thermally bonded to the container part, and the contents can be prevented from spilling from the overturned container part. Therefore, the convenience of the packaging container can be improved.

The perspective view which shows the packaging container which concerns on 1st Embodiment of this invention. Side surface sectional drawing which shows the packaging container which concerns on 1st Embodiment of this invention. The top view which shows the packaging container which concerns on 1st Embodiment of this invention. Sectional drawing which shows the layer structure of the laminated | multilayer film which comprises the packaging bag which concerns on 1st Embodiment of this invention. Side surface sectional drawing which shows the state after opening of the packaging container which concerns on 1st Embodiment of this invention. The top view which shows the packaging container which concerns on 2nd Embodiment of this invention. The top view which shows the packaging container which concerns on 3rd Embodiment of this invention. The top view which shows the packaging container which concerns on 4th Embodiment of this invention.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. 1, 2 and 3 show a perspective view, a side sectional view and a top view of the packaging container 1 of the first embodiment. The packaging container 1 includes a container part 10 and a lid member 20.

  The container part 10 is formed of a resin molded product and has a storage part 13 and a flange 12. The storage unit 13 is formed in a bottomed cylindrical shape having a circular opening 11 on the upper surface, and stores solid contents N such as confectionery. The flange 12 is formed in an annular substantially flat surface extending in the outer peripheral direction from the outer peripheral edge of the opening 11.

  The container part 10 is formed with resin harder than the lid | cover material 20, For example, polyethylene, a polypropylene, a polyethylene terephthalate etc. can be used. In addition, you may form the container part 10 with a hard paper material.

  The lid member 20 is stacked on the flange 12 and heated by the seal head to be heat-heated to the flange 12. Thereby, the opening 11 is sealed by the lid member 20.

  The lid member 20 covers the entire flange 12, and the lid member 20 is provided with a gripping portion 21 that protrudes from the flange 12 toward the outer peripheral side. Further, the lid member 20 is provided with a cross-shaped cut 41 and an arc-shaped cut 45 which will be described in detail later.

  FIG. 4 is a cross-sectional view showing the layer structure of the lid member 20. The lid member 20 is formed of a laminated body in which a base material layer 31, a barrier layer 32, an intermediate layer 33, and a thermoadhesive resin layer 34 are laminated in this order from the outer surface side.

  The base material layer 31 is formed of paper such as clay coated paper. The outer surface of the base material layer 31 is formed by printing and applying an ink material at a predetermined position by gravure printing or offset printing. By printing, for example, a desired pattern such as a character, a figure, and a symbol can be arbitrarily formed on the outer surface of the base material layer 31.

  The base material layer 31 may be formed of a resin film such as polyethylene terephthalate or polybutylene terephthalate.

  The barrier layer 32 is bonded to the base material layer 31 with an interlayer adhesive (not shown), and prevents water vapor and oxygen from entering the inside of the container part 10 from the outside. Thereby, deterioration of the content N accommodated in the accommodating part 13 (refer FIG. 2) can be prevented.

  The barrier layer 32 is formed of a metal foil such as aluminum or nickel, a resin film having a vapor deposition film of a metal such as aluminum, or a resin film having a vapor deposition film of an inorganic oxide such as aluminum oxide or silicon oxide.

  The intermediate layer 33 is a layer disposed between the barrier layer 32 and the thermal adhesive resin layer 34. For example, a mixture of an ethylene-methacrylic acid copolymer and an ionomer resin can be used. In this case, the intermediate layer 33 and the thermoadhesive resin layer when the intermediate layer 33 and the thermoadhesive resin layer 34 are coextruded and laminated by changing the ratio of the ethylene-methacrylic acid copolymer and the ionomer resin. The adhesion strength between layers can be adjusted.

  The heat-adhesive resin layer 34 is made of a resin that can be melted by heat and fused to the flange 12 and thermally bonded. As the heat-adhesive resin layer 34, polyethylene, ethylene / α-olefin copolymer, polypropylene, ethylene / vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene -Polyolefin resins such as a methacrylic acid copolymer, an ethylene-propylene copolymer, and a methylpentene polymer can be used. Alternatively, the thermal adhesive resin layer 34 may be multilayered and the polyolefin resin may be disposed in the innermost layer.

  As the polyethylene resin for forming the heat-adhesive resin layer 34, low density polyethylene, medium density polyethylene, and high density polyethylene can be used. In particular, by using low density polyethylene, an interlayer adhesive strength that can be suitably peeled from the intermediate layer 33 is obtained.

  Further, the thermal adhesive resin layer 34 may contain an inorganic filler such as titanium oxide, potassium titanate, barium sulfate or zinc oxide.

  In addition, the material which comprises said base material layer 31, the barrier layer 32, the intermediate | middle layer 33, and the thermoadhesive resin layer 34 is an example, and is not limited to these.

  A heat-adhesive resin layer 34 of the lid member 20 is thermally bonded onto the flange 12 of the container unit 10. At this time, the adhesive strength between the flange 12 and the thermal adhesive resin layer 34 is higher than the interlayer adhesive strength between the intermediate layer 33 and the thermal adhesive resin layer 34. Thereby, between the lower layer part 40 containing the thermoadhesive resin layer 34 at the time of opening of the packaging container 1, and the upper layer part 30 (base material layer 31, barrier layer 32, intermediate | middle layer 33) laminated | stacked on the lower layer part 40. Can be peeled off.

  In addition, a half-cut cut 41 and a cut 45 are formed in the lid member 20 from the lower surface through the lower layer portion 40 (thermoadhesive resin layer 34). One end of each of the cuts 41 and 45 may reach a part of the intermediate layer 33 in the thickness direction.

  In FIG. 3, the cut 45 is formed in a continuous arc shape that crosses the gripping portion 21 along the outer peripheral edge 12 a of the flange 12. Thereby, when the holding part 21 is held and the packaging container 1 is opened, the upper layer part 30 of the lid member 20 is peeled off together with the holding part 21.

  The notch 41 is disposed on the opening 11 and is formed in a cross shape by orthogonal straight lines. The cuts 41 extend in a parallel direction and a vertical direction with respect to the peeling direction X from the gripping portion 21 toward the center P of the opening portion 11. The outer peripheral end of the cut 41 is arranged away from the periphery of the opening 11.

  When the lid member 20 is opened, the upper layer portion 30 is peeled from the lower layer portion 40 in the peeling direction X from the gripping portion 21 toward the center P of the opening portion 11. At this time, a rectangular window portion 46 formed by connecting the outer peripheral ends of the notches 41 is opened in the lower layer portion 40, and an annular protruding portion 43 protruding from the flange 12 is formed on the outer peripheral side of the window portion 46. The In addition, in FIG. 3, the window part 46 is shown with the dashed-dotted line.

  A plurality (four in this embodiment) of triangular covering pieces 42 extending from the protruding portion 43 are formed in the window portion 46. Two sides forming the top of the inner peripheral end of the covering piece 42 are formed by the cuts 41. One side 42a of the covering piece 42 is formed of a straight line parallel to the peeling direction X, and the other side 42b is formed of a straight line orthogonal to the peeling direction X.

  FIG. 5 is a side sectional view showing a state when the packaging container 1 is opened. When the user grips the gripping portion 21 with the thumb and the index finger and pulls the lid member 20 in the peeling direction X, the upper layer portion 30 starts to peel from the lower layer portion 40 through the cut 45. When the lid member 20 is further pulled in the peeling direction X, the lower layer part 40 from which the upper layer part 30 has been peeled remains on the flange 12 and covers the opening part 11. A window portion 46 opens in the lower layer portion 40 covering the opening portion 11, and a covering piece 42 projects from the window portion 46.

  Note that the interlayer adhesive strength between the upper layer portion 30 and the lower layer portion 40 may be adjusted to be higher than that in other regions in a region facing the gripping portion 21 across the center P on the flange 12. Thereby, since peeling of the lid member 20 is stopped on the region, the lid member 20 can be opened so as not to be separated from the container part 10. For this reason, the container part 10 and the lid | cover material 20 can be discarded as garbage integrally. Further, the opening 11 can be closed by covering the opening 11 with the opened lid member 20 and folding the gripping part 21 to the lower surface side of the flange 12 and hooking it.

  When the user inserts a finger into the window portion 46 and pushes the covering piece 42, the inner peripheral side of the covering piece 42 is displaced downward, and the opening of the window portion 46 is expanded. Thereby, the content N can be taken out easily. At this time, since the barrier layer 32 is arranged on the upper layer part 30 side, the user can easily visually recognize the contents N in the container part 10 by configuring the lower layer part 40 with the transparent thermal adhesive resin layer 34. . Thereby, the convenience at the time of taking out the content N improves.

  Further, it is prevented that the content N is caught on the covering piece 42 and the projecting portion 43 when the container portion 10 falls, and the content N is spilled from the window portion 46.

  When the cut 41 is inclined with respect to the peeling direction X, the tapered covering piece 42 may be peeled off without being peeled from the upper layer portion 30 toward the gripping portion 21. Thereby, since the covering piece 42 is not arranged in the region facing the gripping portion 21 across the center P of the window portion 46, the content N spills when the container portion 10 falls.

  For this reason, one side of the covering piece 42 formed by the cuts 41 is formed of a straight line orthogonal to the peeling direction X, so that the formation of the covering piece 42 that is tapered toward the gripping portion 21 can be prevented. Thereby, the covering piece 42 which covers the window part 46 can remain reliably.

  According to the present embodiment, the lid member 20 that is thermally bonded to the flange 12 of the container part 10 has the cuts 41 that are half-cut through the lower layer part 40. A plurality of covering pieces 42 are formed on the lower layer portion 40 that are peeled off from the upper layer portion 30 and remain on the flange 12 when opened. Thereby, the covering piece 42 can be pushed in with a finger after opening, and the content N can be taken out easily. Moreover, when the container part 10 falls down after opening, the content N can be prevented from being caught by the covering piece 42 and spilling from the opening part 11. Therefore, the convenience of the packaging container 1 can be improved.

  Moreover, since the outer peripheral end of the notch 41 is arranged away from the peripheral edge of the opening 11, a protruding portion 43 that protrudes from the flange 12 and remains in an annular shape is formed in the opening 11 when opened. Thereby, when the container part 10 falls down, it can prevent more that the content N is caught in the protrusion part 43 and spills from the opening part 11. FIG.

  Further, the covering piece 42 projects into the window portion 46 that connects the outer peripheral ends of the cuts 41. Thereby, when the container part 10 falls down after opening, it can prevent more that the content N is caught by the protrusion part 43 and spills from the opening part 11. FIG.

  In addition, since one side 42 b forming the top of the inner peripheral end of the covering piece 42 is a straight line orthogonal to the peeling direction X, the formation of the covering piece 42 that is tapered toward the gripping portion 21 is prevented. For this reason, the covering piece 42 which covers the window part 46 can remain reliably.

  In addition, the notch 41 is formed in a cross shape, and the side 42a of the covering piece 42 is formed of a straight line that is parallel to the peeling direction X and the outer peripheral side is separated from the gripping portion 21 in the peeling direction X. Thereby, the side 42b of the covering piece 42 can be arranged orthogonal to the peeling direction X.

  Note that the cuts 41 other than the orthogonal cross may be formed. At this time, at least one side of the covering piece 42 may be composed of a straight line orthogonal to the peeling direction X or a straight line that is inclined with respect to the peeling direction X and leaves the inner circumferential side away from the gripping portion 21 in the peeling direction X. That is, when the two sides of the covering piece 42 are separated from the gripping portion 21 in the peeling direction X on the outer peripheral side and are inclined or parallel to the peeling direction X, the covering piece 42 tapering toward the gripping portion 21 is formed. The

  Moreover, since the upper layer part 30 has the barrier layer 32 of a barrier property, the lower layer part 40 can be comprised with the transparent thermoadhesive resin layer 34, and it can make it easy to visually recognize the content N in the container part 10. FIG. Thereby, the convenience at the time of taking out the content N improves.

Second Embodiment
Next, a second embodiment of the present invention will be described. FIG. 5 shows a top view of the packaging container 1 of the second embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the shape of the cut 41 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

  The cuts 41 are formed in a Y-shape with 120 ° intervals by continuous straight lines. Thereby, the triangular window part 46 which connected the outer peripheral end of the notch 41 is formed. When the packaging container 1 is opened, a plurality (three in this embodiment) of covering pieces 42 are formed in the window portion 46. Therefore, the spillage of the contents N can be prevented as in the first embodiment.

  In addition, one side of the two covering pieces 42 formed by the cuts 41 is formed by a straight line that is parallel to the peeling direction X and has an outer peripheral side away from the gripping portion 21 in the peeling direction X. As a result, at least one side of the three covering pieces 42 is formed by a straight line that is inclined with respect to the peeling direction X and the inner peripheral side is separated from the gripping portion 21 in the peeling direction X. Therefore, the covering piece 42 covering the window portion 46 can be reliably left.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 7 shows a top view of the packaging container 1 of the third embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the shape of the cut 41 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

  The notch 41 has an annular portion 41a formed in a circular annular shape and four radial portions 41b extending radially from the annular portion 41a. Thereby, the rectangular window part 46 which connected the outer peripheral end of the radial part 41b is formed.

  When the packaging container 1 is opened, the inside of the annular portion 41 a is detached from the lower layer portion 40 together with the upper layer portion 30 to form a circular hole portion 46 a in the window portion 46. In addition, a plurality (four in this embodiment) of covering pieces 42 are formed on the outer peripheral side of the hole 46a. The user can take out the contents N by inserting his / her finger into the hole 46 a and pushing the covering piece 42.

  Therefore, the same effect as the first embodiment can be obtained. Moreover, since the notch 41 has the cyclic | annular part 41a and the hole 46a is formed in the window part 46 at the time of opening, the content N can be taken out more easily.

<Fourth embodiment>
Next, a third embodiment of the present invention will be described. FIG. 8 shows a top view of the packaging container 1 of the fourth embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the shape of the cut 41 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

  The notch 41 has an annular portion 41a formed in a star-shaped annular shape. Thereby, the pentagonal window part 46 which connected the outer peripheral end of the annular part 41a is formed.

  When the packaging container 1 is opened, the inside of the annular portion 41 a is detached from the lower layer portion 40 together with the upper layer portion 30, and a star-shaped hole portion 46 a is formed in the window portion 46. A plurality (5 in this embodiment) of covering pieces 42 are formed on the outer peripheral side of the hole 46a. The user can take out the contents N by inserting his / her finger into the hole 46 a and pushing the covering piece 42.

  Therefore, the same effect as the first embodiment can be obtained. Moreover, since the notch 41 has the cyclic | annular part 41a and the hole 46a is formed in the window part 46 at the time of opening, the content N can be taken out more easily.

  In the first to fourth embodiments, the cut 41 is formed by a continuous straight line, but may be formed in a discontinuous perforation. In this case, when the window portion 46 is pushed downward with fingers after opening, the lower layer portion 40 is broken along the cuts 41 and the inner peripheral side of the covering piece 42 is displaced downward. Thereby, the content N can be taken out easily.

  In addition, the upper layer portion 30 and the lower layer portion 40 are separated between the intermediate layer 33 and the thermoadhesive resin layer 34, but the upper layer portion 30 and the lower layer portion 40 are separated between the base material layer 31 and the barrier layer 32. It may be separated. Further, in the case where the contents N that are difficult to deteriorate even when water vapor or oxygen permeates is stored in the container portion 10, the base material layer 31 is removed from the upper layer portion 30 and the thermoadhesive resin layer 34 without the barrier layer 32 and the intermediate layer 33. May be the lower layer portion 40.

  Further, a peeling layer may be provided between the upper layer portion 30 and the lower layer portion 40. The release layer can be formed of, for example, a water-soluble resin or an emulsion.

  Next, the action and effect of the present invention will be specifically described using examples and comparative examples.

[Sample preparation of packaging containers]
Example 1 is comprised by the packaging container 1 of 1st Embodiment. A hard resin film (thickness: about 1.0 mm) was used for the container part 10. Moreover, the flange 12 of the container part 10 is circular, The internal diameter of the flange 12 is 120 mm, and an outer diameter is 130 mm. Moreover, the depth of the container part 10 is 150 mm.

  The base material layer 31 of the lid member 20 was formed of clay coated paper, and the barrier layer 32 was formed of aluminum foil. The intermediate layer 33 was formed from a mixture of an ethylene-methacrylic acid copolymer and an ionomer resin. The heat-adhesive resin layer 34 was formed of low-density polyethylene to which natural silica was added. Moreover, the intermediate | middle layer 33 and the thermoadhesive resin layer 34 were laminated | stacked so that peeling was possible by coextrusion.

  Further, a cross-shaped cut 41 orthogonal to the center of the lid member 20 was provided, and the length of the outer peripheral edge from the center P of the cut 41 was formed to be 50 mm.

  Example 2 is constituted by the packaging container 1 of the second embodiment. The shapes and materials of the container part 10 and the lid member 20 are the same as those in the first embodiment. A Y-shaped cut 41 was provided at the center of the lid member 20, and the length of the outer peripheral end from the center P of the cut 41 was formed to be 50 mm.

  Example 3 is constituted by the packaging container 1 of the third embodiment. The shapes and materials of the container part 10 and the lid member 20 are the same as those in the first embodiment. A circular annular portion 41a (diameter 100 mm) was formed at the center of the lid member 20, and the length of the four radial portions 41b was 10 mm.

  Example 4 is constituted by the packaging container 1 of the fourth embodiment. The shapes and materials of the container part 10 and the lid member 20 are the same as those in the first embodiment. A star-shaped annular portion 41 a having a circumscribed circle diameter of 110 mm was formed at the center of the lid member 20.

[Comparative Example 1]
In Comparative Example 1, the radial portion 41b of the packaging container 1 of Example 3 was omitted. Other parts are the same as those in the third embodiment.

[Comparative Example 2]
In Comparative Example 2, the shape and material of the container part 10 are the same as those in Example 1, and the lid member 20 omits the intermediate layer 33 from Example 1 so that the barrier layer 32 and the thermoadhesive resin layer 34 cannot be peeled off. Laminated. Further, the notch 41 is not formed in the lid member 20.

[Evaluation of ease of removal]
A sensory test was conducted by five testers when the solid contents N in a regular hexahedron shape (the length of one side was 10 mm) were put in and removed from each packaging container 1 of Examples 1 to 4 and Comparative Examples 1 and 2. went. The results are shown in Table 1. The case where it was easy to take out by the sensory test was indicated as “◯”, and the case where it was difficult to take out was indicated as “x”.
[Evaluation of spill prevention]

  Evaluation of spill prevention from the number of spilled contents N when the container part 10 is tilted in a state where 10 pieces of solid contents N having a regular hexahedron shape (the length of one side is 10 mm) are put in the packaging container 1 and opened. did. The results are shown in Table 2. The evaluation criteria were “X” when the content N spilled from the container 10 was 5 or more, and “◯” when it was less than 5.

  As is clear from Tables 1 and 2, it was confirmed that the packaging container 1 in which the covering piece 42 was formed was easy to take out the contents N and was excellent in spill prevention.

  According to this invention, it can utilize for packaging containers, such as confectionery.

DESCRIPTION OF SYMBOLS 1 Packaging container 10 Container part 11 Opening part 12 Flange 12a Outer peripheral edge 20 Lid material 21 Holding part 30 Upper layer part 31 Base material layer 32 Barrier layer 33 Intermediate layer 34 Thermal adhesive resin layer 40 Lower layer part 41 Cut 41a Annular part 41b Cut 42 Covering piece 42a, 42b Side 43 Projection 45 Cut line 46 Window 46a Hole N Contents P Center X Peeling direction

Claims (9)

  Formed by a laminate that can be peeled between a container having a flange around an opening that opens to the upper surface, a lower layer including at least a thermal adhesive resin layer, and an upper layer stacked on the lower layer A packaging container including a lid covering the opening by thermally bonding the heat-adhesive resin layer to the flange, and the lid is arranged on the opening and passes through the lower layer and is half When opened, the lower layer part peels off from the upper layer part and remains on the flange, and the lower layer part has a plurality of covering pieces that can be displaced downward on the inner peripheral side by pushing. A packaging container formed by cutting.   The packaging container according to claim 1, wherein an outer peripheral end of the cut is arranged away from a peripheral edge of the opening.   The packaging container according to claim 1 or 2, wherein the covering piece protrudes into a window portion connecting the outer peripheral ends of the cuts.   The lid member has a gripping portion protruding from the flange to the outer peripheral side, the upper layer portion is peeled in a peeling direction from the gripping portion toward the center of the opening, and the top portion of the inner peripheral end of the covering piece At least one of the two sides forming the line comprises a straight line orthogonal to the peeling direction, or a straight line that is inclined with respect to the peeling direction and leaves the inner peripheral side away from the gripping part in the peeling direction. Item 4. A packaging container according to item 3.   5. The notch is formed in a cross shape or a Y shape, and one side of the covering piece is formed of a straight line that is parallel to the peeling direction and that has an outer peripheral side away from the gripping portion in the peeling direction. Packaging containers.   The said cut | notch has an annular | circular shaped annular part, and the inside of the said annular part detach | leaves with the said upper layer part with respect to the outer side at the time of opening, and a hole is formed in the said window part. Packaging containers.   The packaging container according to claim 1, wherein at least a part of the cuts are formed in a perforated shape.   The packaging container according to any one of claims 1 to 7, wherein the upper layer portion has a barrier layer having a barrier property.   In a lid formed by a laminate that can be peeled between a lower layer part including at least a heat-adhesive resin layer and an upper layer part laminated on the lower layer part, a notch that is half-cut through the lower layer part The cover member is characterized in that a plurality of covering pieces that can be displaced in the thickness direction on the inner peripheral side by pressing are formed in the lower layer portion from which the upper layer portion has been peeled.

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