JP2019182501A - Lid member with hot water drain hole - Google Patents

Abstract

To provide a lid member with a hot water drain hole which can improve convenience during hot water drain.SOLUTION: A lid member 20 with a hot water drain hole in which an upper layer part 30, in which a release layer 35 formed of a release varnish is provided on a paper layer 34, and a lower layer part 40, which has a thermal adhesive resin layer 43 on an underside thereof, are releasably laminated on a releasable area D on which the release layer 35 is arranged, and plural hot water drain holes 24 are formed by a half-cut-off cutting-plane line 25 which penetrates from a lower surface of the lower layer part 40. In the lid member, the releasable area D exists outside each hot water drain hole 24, and surrounds the plural hot water drain holes 24, and the release layer 35 and a non-formation part 34a with non-formation of the release layer 35 are mixedly present on the releasable area D.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a lid member with a hot water cut hole for sealing a container main body for storing instant fried noodles.

  A packaging container for packaging contents such as instant fried noodles and instant spaghetti is disclosed in Patent Document 1. This packaging container includes a container main body of a resin molded product and a lid member for sealing the container main body. The container body is formed in a bottomed cylindrical shape having an opening on the upper surface, and a flange is formed around the opening.

  The lid member has an opening tab and a hot water cutting tab that protrude outward and face each other, and is laminated so that the upper layer portion and the lower layer portion can be peeled off. On the lower surface of the lid member, a hot water cutting hole is formed by a half-cut of a closed curve penetrating the lower layer portion.

  The upper layer portion of the lid member has a paper layer and a release layer disposed on the lower surface of the paper layer. The release layer is formed by applying a release varnish via a sealing varnish to a region of the paper layer excluding the hot water hole.

  In the packaging container having the above-described configuration, the opening tab is pulled, and a part of the lid member is peeled off from the flange to open the pouring gate. When hot water is poured into the container body from the pouring spout, the lid is closed and the contents are steamed.

  When cooking is completed after a predetermined time has elapsed, a part of the upper layer part of the lid member is peeled and folded between the peeling layer and the lower layer part by pulling the hot water cutting tab. At this time, since the lower layer part in the hot water cutting hole is bonded to the upper layer part, a plurality of hot water cutting holes are opened, and hot water cutting is performed through the hot water cutting hole. Thereafter, the entire lid member can be peeled off from the flange and the contents in the container body can be eaten.

Japanese Unexamined Patent Publication No. 2016-222982 (pages 3 to 6, FIG. 7)

  However, according to the above conventional lid member, the upper layer part peeled off from the lower layer part is overlapped on the lower layer part by the repulsion of the paper layer, and there is a problem that the convenience at the time of hot water cutting is poor.

  An object of this invention is to provide the lid | cover material with a hot water cutting hole which can improve the convenience at the time of hot water cutting.

  In order to achieve the above object, the present invention peels an upper layer portion having a release layer formed by a release varnish on a paper layer and a lower layer portion having a thermoadhesive resin layer on the lower surface on the release layer. In a lid material with hot water cut holes that are laminated in a possible manner and have a plurality of hot water cut holes formed by a half-cut cutting line that penetrates the lower layer portion from the lower surface, the release layer is located outside each of the hot water cut holes. The release layer is arranged in a predetermined peelable region surrounding the hot water cut-off hole, and the peelable layer and the non-formation portion where the release layer is not formed are mixed in the peelable region.

  According to this configuration, the lid member with a hot water cut hole is thermally bonded to the container main body by the thermoadhesive resin layer, and when a part is peeled off from the container main body, the pouring port is opened. After pouring from the pouring spout, the pouring spout is closed by a lid material with a scoring hole. At this time, the steam of hot water penetrates the paper layer through the cutting line, spreads between the peeling layer and the lower layer portion from the cutting line, and penetrates the paper layer from the edge of the peeling layer.

  When a predetermined time elapses, a part of the upper layer part of the lid member with a hot water hole is peeled off from the lower layer part and folded back. The lower layer part inside the cutting line is removed together with the upper layer part, and a hot water cutting hole is opened on the lower layer part. Since the upper layer portion is heavier due to condensation of the vapor that has permeated the paper layer, the folded state is maintained, and hot water is cut through the hot water hole.

  Moreover, the present invention is characterized in that, in the lid member with a hot water cut hole configured as described above, the occupancy rate of the non-formed part per unit area of the peelable region is 5% to 40%.

  According to the present invention, in the lid member with a hot water cut hole having the above-described structure, the paper layer inside each hot water cut hole is formed of the non-forming portion.

  Further, the present invention provides a lid member with a hot water cut hole configured as described above, wherein the hot water cut tab protrudes from the outer periphery and is formed in an arch shape with the cutting line facing the hot water cut tab side, and the open end is in a straight line. A plurality of restricting portions disposed on the hot water cutting tab and the restricting portion, and the hot water cutting hole is disposed between the restricting portion and the peelable region on the hot water cutting tab side with respect to the restricting portion. And the paper layer inside the restricting portion is formed of the non-forming portion.

  Further, the present invention is characterized in that, in the lid member with a hot water cut hole having the above-described configuration, a distance between the regulating portion and the hot water cut hole is set to 10 mm or more.

  In the lid member with a hot water hole having the above-described configuration, the lower layer portion has an extruded resin layer adjacent to the release layer, and an anchor coating agent is disposed on the paper layer of the non-formed portion. It is a feature.

  According to the present invention, since the release layer and the non-formed part coexist in the peelable region where the release layer is disposed, the vapor passing through the cutting line penetrates the paper layer from the edge of the release layer. The upper layer portion becomes heavier due to the condensation of the vapor that has permeated the paper layer, and can easily be held in a state of being peeled off from the lower layer portion. Therefore, the convenience at the time of hot water cutting can be improved.

The perspective view which shows the packaging container of embodiment of this invention The longitudinal cross-sectional view which shows the packaging container of embodiment of this invention The top view which shows the packaging container of embodiment of this invention Sectional drawing which shows the layer structure of the cover material with a hot water cut-off hole of the packaging container of embodiment of this invention The top view which expanded the lower surface of the paper layer of the peelable area | region of the lid | cover material with a hot-water hole of the packaging container of embodiment of this invention The perspective view which shows the state which peeled the cover material with a hot water cut-off hole of the packaging container of embodiment of this invention. The perspective view which shows the state at the time of hot water cutting of the packaging container of embodiment of this invention

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a perspective view and a longitudinal sectional view of a packaging container 1 according to an embodiment. The packaging container 1 includes a container body 10 and a lid member 20 with a hot water hole (hereinafter referred to as “lid member 20”). The container body 10 stores contents such as instant fried noodles and instant spaghetti that are drained after pouring.

  The container body 10 is formed in a bottomed cylindrical shape having a circular opening 11 on the upper surface by a resin molded product such as expanded polystyrene resin. An annular flange 12 extending in the horizontal direction from the periphery of the opening 11 is provided on the periphery of the upper surface of the container body 10.

  The lid member 20 includes an upper layer portion 30 and a lower layer portion 40 that are detachably stacked, and is thermally bonded onto the flange 12 by a heat adhesive resin layer 43 (see FIG. 4) provided on the lower layer portion 40. The lid member 20 is provided with an opening tab 21 and a hot water draining tab 22 that protrude outward from the flange 12.

  FIG. 3 shows a top view of the packaging container 1. The unsealing tab 21 of the lid member 20 is provided so as to protrude from the outer periphery at one place in the circumferential direction. The hot water cutting tab 22 is disposed opposite to the opening tab 21 and is provided to protrude from the outer periphery at one place in the circumferential direction.

  The lid member 20 is provided with a cutting line 25, a cutting line 26, and a cutting line 27 by a half cut cut from the lower surface. The cutting line 26 is provided along the outer edge of the flange 12, and peels the upper layer portion 30 from the lower layer portion 40 when the lid member 20 is peeled off from the hot water cutting tab 22.

  The cutting line 25 is formed by a plurality of closed curves arranged on the inner side of the flange 12, and the hot water cutting hole 24 is formed when the upper layer portion 30 is peeled off from the hot water cutting tab 22.

  The cutting line 27 is formed in an arch shape with the top facing the hot water cutting tab 22 side, and the open end 27a is arranged in a straight line. A plurality of hot water cutting holes 24 are arranged between the cutting line 27 and the hot water cutting tab 22, and a plurality of regulating portions 28 that regulate peeling of the upper layer portion 30 are formed by the cutting lines 27. Further, the distance L between the hot water cutting hole 24 and the restricting portion 28 is formed to be 10 mm or more. In the present embodiment, the restricting portion 28 is formed by the trapezoidal cutting line 27, but it may be V-shaped or U-shaped as long as it is an arch shape with the opposite side of the hot water cutting tab 22 open.

  FIG. 4 is a cross-sectional view showing the layer structure of the lid member 20. The upper layer portion 30 of the lid member 20 is formed by laminating a print layer 33, a paper layer 34, and a release layer 35 in order from the upper surface. At a predetermined position on the lower surface of the paper layer 34, a non-formed portion 34a where the release layer 35 is not formed is provided. The lower layer part 40 is formed by laminating an extruded resin layer 41, an aluminum foil layer 42, and a thermal adhesive resin layer 43 in order from the upper surface.

  The cutting line 25, the cutting line 26, and the cutting line 27 cut from the lower surface of the lid member 20 penetrate the lower layer part 40 and are arranged in the paper layer 34 at the upper end.

The paper layer 34 is formed of a piece of art paper, pure white roll paper, or the like. For example, a pure white roll paper having a basis weight of 79.1 g / m ² is used as the paper layer 34. If the basis weight of the paper layer 34 is smaller than 50 g / m ² , the thickness of the lid member 20 is too thin and the rigidity is insufficient, and half-cut processing becomes difficult. If the basis weight of the paper layer 34 is larger than 200 g / m ² , the rigidity of the lid member 20 becomes too high and the cost becomes high. For this reason, the basis weight of the paper layer 34 is preferably in the range of 50 to 200 g / m ² .

  The printed layer 33 is printed with a pattern or the like on the upper surface of the paper layer 34 by ink. The print layer 33 and the release layer 35 are formed by double-sided printing on the paper layer 34 by gravure printing or the like. By the double-sided printing, it is possible to prevent the displacement of the relative positions of the print layer 33 and the release layer 35.

  In addition, you may laminate | stack the protective layer which consists of resin films, such as a polyethylene terephthalate, a stretched nylon, a stretched polypropylene, on the upper layer of the paper layer 34 via an adhesive agent. The upper surface of the paper layer 34 including the printing layer 33 can be protected by the protective layer.

  The release layer 35 is formed by printing a release varnish on the lower surface of the paper layer 34. As the peeling varnish, a resin-based varnish (for example, urethane-based, acrylic-based, nitrified cotton-based, polyamide-based, etc.) to which silicon, low molecular weight polyethylene wax, phosphate ester or the like is added can be used.

  A peelable region D (shown by a dot pattern in FIG. 3) where the upper layer portion 30 and the lower layer portion 40 can be peeled by the peeling layer 35 is provided in a range surrounding the plurality of hot water cut holes 24. In the present embodiment, a peelable region D is arranged on the side of the hot water cutting tab 22 with respect to the regulating portion 28 except for the inside of the hot water cutting hole 24, and a non-forming part 34 a is arranged on the opposite side of the hot water cutting tab 22. Yes.

  For this reason, the paper layer 34 on the inner side of the hot water cutting hole 24 and the inner side of the regulating portion 28 is formed by the non-forming portion 34a. That is, the area surrounding each of the plurality of hot water cut holes 24 is the peelable region D outside each hot water cut hole 24. In the peelable region D, as will be described later, the peeling layer 35 and the non-forming portion 34a are mixed.

  The aluminum foil layer 42 of the lower layer part 40 is formed of, for example, an aluminum foil having a thickness of 15 μm and imparts a dead hold property to the lid member 20. Thereby, the lid | cover material 20 can maintain the state lifted by opening and the state closed when closed again. Instead of the aluminum foil layer 42, a layer made of a resin film having a deposited film of metal (aluminum or the like) or oxide (aluminum oxide, silicon oxide or the like) may be provided.

  The heat-adhesive resin layer 43 is formed of an easy peel film containing an olefin resin or the like and having easy peelability. The heat-adhesive resin layer 43 is not particularly limited as long as it is an easy peel film suitable for the container body 10. For example, an unstretched polypropylene film having a thickness of 30 μm containing an ethylene-vinyl acetate copolymer is used.

  The aluminum foil layer 42 and the thermoadhesive resin layer 43 are laminated by an adhesive (not shown) such as EMAA, and are adhered to the upper layer portion 30 through the extruded resin layer 41. The extruded resin layer 41 is formed of an extruded resin such as polyethylene. Thereby, since the non-formation part 34a on the paper layer 34 contacts the extruded resin layer 41, the adhesive strength between the paper layer 34 and the lower layer part 40 can be increased in the non-formation part 34a.

  An anchor coating agent may be disposed on the paper layer 34 of the non-forming part 34a. Thereby, the adhesive strength of the paper layer 34 and the lower layer part 40 of the non-formation part 34a can be made higher. Therefore, it is possible to reliably prevent the lower layer portion 40 inside the hot water cutting hole 24 from falling into the container body 10.

  FIG. 5 shows an enlarged plan view of the lower surface of the paper layer 34 (see FIG. 3) in the peelable region D. A large number of dot-shaped non-formed portions 34 a are arranged in the peeling layer 35 by halftone dot printing or the like in the peelable region D arranged outside the hot water cutting hole 24. Thereby, the peeling layer 35 and the non-formation part 34a are mixed in the minute area in the peelable region D.

  Since the peelable layer 35 and the non-formed part 34a coexist in the peelable region D, the vapor permeates the paper layer 34 from the edge 35a (see FIG. 4) of the peelable layer 35 as will be described later. Moreover, the adhesive strength of the upper layer part 30 and the lower layer part 40 of the peelable area | region D can be made high, and peeling of the peelable area D during conveyance can be prevented.

In the present embodiment, the circular non-forming portions 34a are arranged in a square lattice pattern with a period T in two orthogonal directions. Further, the center-to-center distance T ′ (= 2 ^1/2 · T) of the diagonal non-forming part 34a is 1 mm, and the diameter of the non-forming part 34a is 0.5 mm. Thereby, the occupation rate of the non-formation part 34a per unit area of the peelable area D is about 39%.

  If the occupancy ratio of the non-formed part 34a per unit area of the peelable region D is smaller than 5%, the adhesive strength between the upper layer part 30 and the lower layer part 40 cannot be increased. For this reason, peeling of the peelable area D during conveyance may occur. If the occupancy ratio of the non-formed part 34a per unit area of the peelable region D is larger than 40%, a part of the paper layer 34 remains on the lower layer part 40 when the upper layer part 30 is peeled from the lower layer part 40. Causes paper peeling. For this reason, it is more preferable that the occupation rate of the non-formed part 34a per unit area of the peelable region D is 5% to 40%.

  It should be noted that a large number of dot-like release layers 35 may be arranged in the non-forming part 34a by halftone printing or the like, and the peeling layer 35 and the non-forming part 34a may be arranged in a checkered pattern. Also by these, similarly to the above, the peeling layer 35 and the non-formed part 34a can be mixed in a very small area.

  In the packaging container 1 having the above configuration, the lid member 20 is peeled from the opening tab 21 by the user from the flange 12 as shown in FIG. Thereby, the pouring gate 11a which consists of a part of opening part 11 is exposed.

  Next, a packaging bag (not shown) for storing a source, ingredients, and the like is taken out from the container body 10 through the pouring port 11a as necessary. When an ingredient or the like is introduced into the container main body 10, hot water is poured into the container main body 10 from the pouring port 11 a, the opening tab 21 is hung on the flange 12, and the lid member 20 is closed again. Thereby, steaming cooking, such as instant fried noodles, is performed while the lid 20 is kept closed.

  At this time, the hot water vapor in the container body 10 penetrates the paper layer 34 through the cutting lines 25 and 27. Further, since the adhesive strength between the peeling layer 35 and the lower layer portion 40 is low, a minute gap is irregularly formed between the peeling layer 35 and the lower layer portion 40 when the half-cut cutting lines 25 and 27 are provided. The For this reason, the vapor spreads between the release line 35 and the lower layer part 40 from the cutting lines 25 and 27, and penetrates the paper layer 34 from the edge 35a (see FIG. 3) of the release layer 35 adjacent to the non-formed part 34a. To do. Since a large number of minute non-formed portions 34 a are formed in the peelable region D, a large amount of vapor can penetrate into the paper layer 34 from the edge 35 a of the peel layer 35.

  When cooking is completed after a predetermined time has elapsed after pouring, the hot water cutting tab 22 is pulled by the user. Thereby, the upper layer part 30 peels in a state where the lower layer part 40 is bonded to the flange 12 inside the cutting line 26 of the lid member 20. Moreover, the lower layer part 40 inside the cutting line 25 is removed together with the upper layer part 30, and the hot water cutting hole 24 is opened. When the user peels off the upper layer portion 30, the load increases on the open end 27a of the restricting portion 28, so that the peeling can be stopped.

  The upper layer part 30 peeled from the lower layer part 40 is folded back on the open end 27a. The upper layer 30 is heavier due to the condensation of the vapor that has permeated the paper layer 34. Further, since the vapor penetrates from the edge 35a of the release layer 35 into the lower portion of the paper layer 34, the lower portion of the paper layer 34 extends due to the condensation of the vapor, and the upper layer portion 30 curls upward. Thereby, the state which turned up the upper layer part 30 can be hold | maintained easily.

  Further, since the vapor spreads from the cutting line 27 arranged at the portion where the upper layer portion 30 is folded and penetrates into the paper layer 34, the repulsive force of the paper layer 34 near the open end 27a can be reduced. For this reason, the state which turned up the upper layer part 30 can be hold | maintained still more easily.

  Then, as shown in FIG. 6, the container body 10 is drained through the hot water hole 24. At this time, since the distance L between the restricting portion 28 and the hot water cutting hole 24 is formed to be 10 mm or more, the contents can be prevented from being discharged from the inside of the restricting portion 28. When the hot water cutting is completed, the entire lid member 20 is peeled off from the opening tab 21, and the contents can be eaten by putting a sauce or the like into the container body 10.

  According to this embodiment, since the peeling layer 35 and the non-forming part 34a are mixed in the peelable region D in which the peeling layer 35 is disposed, the vapor passing through the cutting lines 25 and 27 passes from the edge 35a of the peeling layer 35 to the paper layer. 34 penetrates. The upper layer portion 30 becomes heavier due to the condensation of the vapor that has permeated the paper layer 34, and can be easily held in a state where it is peeled off from the lower layer portion 40 when the hot water is cut off. Therefore, the convenience at the time of hot water cutting can be improved. Moreover, since the adhesive strength of the upper layer part 30 and the lower layer part 40 of the peelable area | region D becomes high, peeling of the peelable area D at the time of conveyance can be prevented.

  Moreover, since the occupation rate of the non-formation part per unit area of the peelable region is 5% to 40%, it is possible to reliably prevent the peelable region D from being peeled off during transport, and at the time of peeling the upper layer part 30 Paper peeling can be prevented.

  Further, since the paper layer 34 on the inner side of each hot water cut hole 24 is composed of the non-formed part 34a, when the upper layer part 30 is peeled off, the lower layer part 40 on the inner side of the cutting line 25 is surely removed to form the hot water cut hole 24. Can be formed.

  Further, a plurality of arch-shaped restricting portions 28 whose top portions are directed toward the hot water cutting tab 22 by the cutting line 27 are provided, and the open ends 27a of the restricting portions 28 are arranged on a straight line. The peelable region D is arranged on the hot water cutting tab 22 side with respect to the restricting portion 28, and the paper layer 34 on the inner side of the restricting portion 28 is composed of a non-formed portion 34a. Thereby, when the upper layer part 30 is peeled from the lower layer part 40, the load increases on the open end 27a of the restricting part 28, so that the peeling can be stopped and the upper layer part 30 can be folded back. Further, since the vapor permeates in the vicinity of the portion where the upper layer portion 30 is folded back through the cutting line 27 forming the restricting portion 28, the state where the upper layer portion 30 is folded back can be more easily maintained.

  Moreover, since the distance L between the restricting portion 28 and the hot water cutting hole 24 is set to 10 mm or more, the outflow of contents from the inside of the restricting portion 28 can be prevented at the time of hot water cutting.

  Further, when the lower layer portion 40 has the extruded resin layer 41 adjacent to the release layer 35 and the anchor coating agent is disposed on the paper layer 34 of the non-formed portion 34a, the paper layer 34 and the lower layer portion 40 of the non-formed portion 34a The adhesive strength of can be further increased. Accordingly, it is possible to prevent the lower layer portion 40 inside the hot water cutting hole 24 from falling into the container body 10.

  According to this invention, it can utilize for the packaging container which performs hot water cutting, such as instant fried noodles.

DESCRIPTION OF SYMBOLS 1 Packaging container 10 Container main body 11 Opening part 11a Pouring port 12 Flange 20 Lid material 21 Opening tab 22 Hot water cutting tab 24 Hot water cutting hole 25, 26, 27 Cutting line 27a Open end 28 Control part 30 Upper layer part 33 Printing layer 34 Paper layer 35 Peeling layer 35a Edge 40 Lower layer part 41 Extruded resin layer 42 Aluminum foil layer 43 Thermal adhesive resin layer D Peelable area

Claims (6)

  Laminating the upper layer portion provided with a release layer formed by a release varnish on the paper layer and the lower layer portion having a thermoadhesive resin layer on the lower surface so as to be peelable on the peelable region provided with the release layer, In a lid member with a hot water cut hole in which a plurality of hot water cut holes are formed by a half-cut cutting line penetrating the lower layer portion from the lower surface, the peelable region is outside each of the hot water cut holes, and the plural hot water cuts A lid material with a hot water hole, which surrounds a hole, and in which the release layer and the non-formation part where the release layer is not formed are mixed in the peelable region.   2. The lid member with a hot water cut hole according to claim 1, wherein an occupancy ratio of the non-formed part per unit area of the peelable region is 5% to 40%.   The lid member with a hot water cut hole according to claim 1 or 2, wherein the paper layer inside each hot water cut hole comprises the non-formed part.   A hot-water cutting tab protruding from the outer periphery, and a plurality of regulating portions that are formed in an arch shape with the cutting line facing the hot-water cutting tab side and whose open ends are arranged in a straight line. The hot water cutting hole is arranged between the tab and the regulating portion, the peelable region is arranged on the hot water cutting tab side with respect to the regulating portion, and the paper layer inside the regulating portion is on the paper layer It consists of the said non-formation part, The lid | cover material with a hot water cut-off hole in any one of Claims 1-3 characterized by the above-mentioned.   The lid member with a hot water cut hole according to claim 4, wherein a distance between the restricting portion and the hot water cut hole is 10 mm or more.   6. The lower layer portion has an extruded resin layer adjacent to the release layer, and an anchor coating agent is disposed on the paper layer of the non-formed portion. A lid with a hot water hole.

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