JP4235738B2 - Instant food container lid with open hole - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid of a container used for sealing and packaging instant food such as fried noodles, and in particular, hot water for an instant food container provided with a hot water hole for discharging hot water to be poured to soften the dried instant food softly. It relates to a lid with a cut hole.
[0002]
[Prior art]
As shown in the side sectional view of FIG. 5 (a) and the plan view of FIG. 5 (b), for example, the conventional instant food container lid with a hot water hole has a top sheet 11 on the top side (outside side). A sheet-like lid A (for example, a circular lid) in which the composite sheet 1 is laminated and laminated on the inner surface side (food side) thereof, and the composite sheet 1 in a partial region from the outer peripheral arc portion of the lid to the inside thereof The inner surface overlapped with the surface sheet 11 is provided with an easily peelable region L1 (hatched region) by the easily peelable layer 5 formed by applying an easily peelable agent (peeling varnish), and the other composite sheet 1 and the surface. On the inner surface overlapped with the sheet 11, an adhesive region L2 (non-peeling region) in a bonded state is provided.
[0003]
A hot water cut hole forming half cut 7 having an inner diameter R is formed in one or a plurality of locations of the composite sheet 1 in the easy peeling region L1, and the hot water cut hole forming half cut 7 region is formed. The inner surface of the inner composite sheet 1 and the surface sheet 11 is provided with a half-cut region inner adhesive portion 6 (an area where the easily peelable layer 5 is not formed) having an inner diameter r, and the composite sheet 1 and the surface sheet 11 are half-cut. They are bonded to each other at the in-region bonding portion 6.
[0004]
As shown in FIG. 6, the lid A of the instant food container having the structure as described above is bonded and sealed to the opening flange portion 21 at the upper end of the container B containing the instant food, and the container is hermetically packaged. It is an instant food container sealed and packaged.
[0005]
The container B in which the instant food is hermetically packaged as described above is pulled up from the flange portion 21 of the container by pulling up the pull tab 13 of the composite sheet 1 on the outer periphery of the lid A on the adhesive region L2 side shown in FIG. The composite sheet 1 on the adhesive region L2 side is partially peeled to open the container B, and hot water is poured into the container B from the opening, and then the pull tab 13 at the opening is folded back to the outside of the flange 21. And then leave it for a few minutes to soften the instant food inside.
[0006]
Thereafter, the pull tab 12 of the top sheet 11 on the outer periphery of the easy peel region L1 of the lid A shown in FIG. 5B is pulled up, and the top sheet 11 in the easy peel region L1 is removed from the composite sheet 1 as shown in FIG. After peeling and separating the composite sheet 1 in the hot-cut hole forming half-cut 7 region adhered to the surface sheet 11 and forming several hot-cut holes 8 having an inner diameter R in the composite sheet 1, The hot water inside can be discharged from the hot water cut hole 8 by tilting.
[0007]
[Problems to be solved by the invention]
On the lid A of the instant food container as described above, a hot water cut hole forming half cut 7 having an inner diameter R is formed, and the composite sheet 1 and the surface in the hot water cut hole forming half cut 7 region are formed. On the inner surface of the sheet 11, the composite sheet 1 and the surface sheet 11 are bonded to each other in the half-cut region so that a hot water cut hole 8 is formed in the composite sheet 1 simultaneously with the separation of the composite sheet 1 and the surface sheet 11. A half-cut region adhesive portion 6 having an inner diameter r (region where the easy peeling layer 5 is not formed) is provided.
[0008]
However, in the cutting process of the hot-cut hole forming half-cut 7 with the inner diameter R, it is necessary to cut the half-cut 7 so as to be applied to the easily peelable layer 5 constituting the adhesive portion 6 in the half-cut region with the inner diameter r. In addition, due to the pressing force of the punching blade for half-cutting and the impact of cutting, it is not planned by the easy peeling layer 5 between the composite sheet 1 and the surface sheet 11 along the outer peripheral portion of the adhesive part 6 in the half-cut region. In some cases, irregular peeling may occur, which may cause the quality of the lid to deteriorate.
[0009]
Further, in the conventional structure of the lid A as described above, as shown in FIGS. 4A and 4B, the inner diameter R of the hot-cut hole forming half-cut 7 and the formation of the easily peelable layer 5 are formed. The relationship between the inner diameter r of the in-half-bond region 6 that is not performed is set so that 2R / 3 ≦ r <R, and the values R and r are close to each other. In the processing step, considerable registration accuracy is required for registering the position corresponding to the formation of the half-cut 7 for hot water hole formation and the easy-release layer 5 by pattern formation of the easy-release agent. A considerable amount of time is required for the registration work in the coating formation.
[0010]
In the lid manufacturing process, the hot-cut hole forming half-cut 7 is formed by patterning the easy release layer 5 on the inner surface of the composite sheet 1 and the surface sheet 11 using an easy-release agent. And then cutting the hot-cut hole forming half-cut 7 from the side of the composite sheet 1 so as to include all the adhesive portions 6 in the half-cut region by using a cutting die for half-cutting. However, even in this case, a cutting accuracy with a considerably high accuracy is required, and in some cases, a considerable manufacturing loss may occur.
[0011]
The problem of the present invention is to improve the quality by devising so that unscheduled irregular peeling does not occur between the composite sheet and the surface sheet along the outer peripheral part of the adhesive part in the half cut region, In addition, it does not require high registration accuracy in the pattern formation of the easy-release layer as in the past and high cutting accuracy in the half-cutting process, and easily manufactures lids with hot water cut holes for instant food containers. There is to be able to do it.
[0012]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is an easy release formed by applying an easy release agent to a predetermined shape region of a composite sheet composed of a synthetic resin layer and an aluminum foil layer and a surface sheet containing paper. A hot-cut hole forming half-cut is formed at one or a plurality of locations of the composite sheet in the easy-peeled region, which are partitioned by an easy-peelable region by the layer and other adhesive regions and laminated and adhered to each other. the composite sheet and overlay the topsheet inner surface of Setsuana forming the half-cut area, a hot water Setsuana lidded of instant food containers half-cutting area adhered portion without the easy peeling layer is formed, The easy-peeling layer in the easy-peeling region has a halftone dot pattern with a dot size of 0.5 to 1.5 mm, an area ratio of 60 to 90%, and an inner diameter R of the hot-cut hole forming half-cut is 5 .5mm ≦ R ≦ 6.5m A instant food containers Yu Setsuana lidded, wherein the inner diameter r of the half-cut area bonding portion is 2.0 mm ≦ r ≦ 4.3 mm.
[0014]
The invention according to claim 2 of the present invention is an easy release formed by applying an easy release agent to a predetermined shape region of a composite sheet composed of a synthetic resin layer and an aluminum foil layer and a surface sheet containing paper. A hot-cut hole forming half-cut is formed at one or a plurality of locations of the composite sheet in the easy-peeled region, which are partitioned by an easy-peelable region by the layer and other adhesive regions and laminated and adhered to each other. the composite sheet and overlay the topsheet inner surface of Setsuana forming the half-cut area, a hot water Setsuana lidded of instant food containers half-cutting area adhered portion without the easy peeling layer is formed, The easy-peeling layer in the easy-peeling region has a mesh pattern with a mesh hole diameter of 0.3 to 0.5 mm, an area ratio of 60 to 90%, and an inner diameter R of the hot-cut hole forming half-cut is 5.5 mm. ≦ R ≦ 6.5 m, it is instant food containers Yu Setsuana lidded, wherein the inner diameter r of the half-cut area bonding portion is 2.0 mm ≦ r ≦ 4.3 mm.
[0016]
In the invention according to claim 3 of the present invention, the adhesive portion in the half cut region is formed such that the inner diameter r is 2R / 3 or less with respect to the inner diameter R of the hot water cut hole forming half cut. Or it is a lid | cover with a hot-water hole of the instant food container of Claim 2 .
[0020]
[Action]
In the instant food container lid of the present invention, the easy-peeling layer 5 that forms the easy-peeling region L1 on the inner surface of the laminated adhesive between the topsheet 1 and the composite sheet 11 has a halftone dot pattern or mesh. It is formed by applying a pattern shape, a checkered pattern shape, or a grain pattern shape as appropriate.
[0021]
Therefore, when cutting the hot-cut hole forming half-cut 7 into the easy-peeling region L1 of the lid formed by laminating and bonding the top sheet and the composite sheet, the cutting pressure and impact of the half-cut die blade are cut. Thus, it is possible to avoid unplanned irregular peeling between the top sheet 1 and the composite sheet 11.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
The lid with a hot water hole of the instant food container of the present invention will be described in detail below based on a side sectional view of the lid shown in FIG. 1 (a) and a plan view of the lid shown in FIG. 1 (b).
[0023]
In the lid with a hot water cut hole of the present invention, the composite sheet 1 having a circular shape (polygonal shape such as a quadrangle) and the top sheet 11 have a mesh pattern (or a mesh) with an easy-release agent covering a predetermined shape region from the outer periphery of the lid. An easy-peeling region L1 with a pattern-like easy-peeling layer 5 formed by applying a dot pattern, a checkered pattern, or a grain pattern), and an adhesive region that is a non-formation region of the easy-peeling layer 5 L2 and are laminated and bonded together.
[0024]
Further, as shown in FIG. 1 (b), the surface sheet 11 is formed with a separation portion 9 by a separation perforation along the boundary portion between the easy separation region L1 and the adhesion region L2 as necessary. ing. In addition, a pull tab 12 for peeling the surface sheet, which is used when peeling the surface sheet 11, is provided so as to protrude from the surface sheet 11 in the easy peeling region L1 so as to protrude partially outward from the outer periphery of the lid. In addition, a lid peeling pull tab 13 is provided which extends from at least the composite sheet 1 in the adhesion region L2 so as to protrude partially outward of the lid and is used when peeling the lid.
[0025]
A hot-cut hole forming half cut 7 having an inner diameter R shape is formed in one or a plurality of places of the composite sheet 1 in the easy peeling region L1. The half cut 7 is cut by a mold blade from the back side of the composite sheet 1 (the side opposite to the top sheet 11).
[0026]
The easy release region L1 is formed by applying an easy release agent to the inner surface of the composite sheet 1 and the top sheet 11 in a mesh pattern (or a dot pattern, a checkered pattern, or a grain pattern). Formed by layer 5.
[0027]
For example, as shown in FIG. 1 (b), the easy peeling region L 1 including the region of the half cut hole forming hole cut 7 on the inner surface of the composite sheet 1 and the top sheet 11 has, for example, a halftone dot diameter. Is 0.5 to 1.5 mm, the number of halftone dots is 0.5 to 2.0 lines / mm, and the easy-peeling layer 5 has a halftone dot pattern, or the mesh hole diameter is 0.3 to 0.5 mm, and the number of mesh lines is An easily peelable layer 5 having a mesh pattern of 0.5 to 2.0 lines / mm is formed, and the easily peelable layer 5 having a pattern is formed with an area ratio of 60 to 90%.
[0028]
The pattern-like easy-release layer 5 is used when cutting the hot-cut hole forming half-cut 7 from the side of the composite sheet 1 with a mold blade to the cover material laminated and bonded to the composite sheet 1 and the top sheet 11. Along the periphery of the half-cut 7 for forming a hot-water hole, an adhesive inner surface between the composite sheet 1 and the surface sheet 11 is unscheduled due to the cutting pressure or impact of the mold blade by the easily peelable layer 5. A halftone dot size and number of halftone dots, or a halftone dot size and number of mesh lines, or a halftone dot pattern, a mesh pattern, or a checkered pattern that retains easy peelability to such an extent that irregular peeling does not occur. A pattern-like easily peelable layer 5 such as a pattern pattern or a grained pattern is formed. This pattern has an unscheduled irregular peel while the easy peelable layer 5 retains an appropriate easy peelable function. Does not produce It is necessary to set it to have the adhesiveness of the degree, and in order to maintain appropriate easy peelability, the dot pattern, mesh pattern, checkered pattern, and sand pattern pattern as described above are appropriate. is there.
[0029]
The inner diameter R of the hot water cut hole forming half cut 7 in the present invention is such that hot water can be smoothly discharged and the instant food loosened by the wetness is not discharged together with the hot water but remains in the container. Although it will not specifically limit if it is a hole diameter, For example, 5 mm-about 7 mm may be sufficient, and 5.5 mm <= R <= 6.5 mm is good.
[0030]
As shown in FIG. 2, the lid A of the instant food container having such a structure is adhered and sealed to the opening flange portion 21 at the upper end of the container B (made of plastic or paper) containing the instant food. By sealing and packaging the instant food, the instant food container is obtained by sealing and packaging the instant food.
[0031]
The container B in which the instant food is hermetically packaged as described above is pulled up from the flange portion 21 of the container by pulling up the pull tab 13 of the composite sheet 1 on the outer periphery of the lid A on the adhesive region L2 side shown in FIG. The composite sheet 1 on the adhesive region L2 side is partially peeled to open the container B, and hot water is poured into the container B from the opening, and then the pull tab 13 at the opening is folded back to the outside of the flange 21. And then leave it for a few minutes to soften the instant food inside.
[0032]
Thereafter, the pull tab 12 of the top sheet 11 on the outer periphery of the easy peel region L1 of the lid A shown in FIG. 1B is pulled up, and the top sheet 11 of the easy peel region L1 is removed from the composite sheet 1 as shown in FIG. After peeling and separating the composite sheet 1 in the hot-cut hole forming half-cut 7 region adhered to the surface sheet 11 and forming several hot-cut holes 8 having an inner diameter R in the composite sheet 1, The hot water inside can be discharged from the hot water cut hole 8 by tilting B.
[0033]
As another example, the overlapping inner surface of the composite sheet 1 and the top sheet 11 in the region of the hot water hole forming half-cut 7 having a hot water hole shape with an inner diameter R is shown in FIGS. As shown in FIG. 5A, the half-cut region adhesive portion 6 having an inner diameter r of 2R / 3 or less is formed.
That is, the inner diameter r of the adhesive portion in the half-cut region (the region without the easily peelable layer) and the inner diameter R of the half-cut forming half-cut formed so as to include the adhesive portion in the half-cut region of the inner diameter r. The relationship is, for example, 1R / 3 ≦ r <2R / 3.
[0034]
The inner diameter r of the adhesive part 6 in the half-cut region is set in accordance with the size of the inner diameter R, and printing such as a gravure printing method, an offset printing method, a relief printing method using an easy-release agent is performed. In order to reduce the strict registration accuracy when patterning the easy peeling layer 5 so as to bite into the inner diameter R of the hot-cut hole forming half-cut 7 by the method, Smaller is fine.
[0035]
For example, the inner diameter r of the adhesive portion 6 in the half-cut region can be set to about r = 2R / 3 with respect to the inner diameter R of the half cut 7, and the inner diameter R is in a range of 5.5 mm ≦ R ≦ 6.5 mm. Correspondingly, it is desirable to set the inner diameter r to about 2.0 mm ≦ r ≦ 4.3 mm.
[0036]
The layer structure and material structure of the lid with a hot water hole of the instant food container of the present invention are not particularly limited in the present invention, but for example, in the side sectional view of the lid of FIG. There is something to show.
[0037]
The composite sheet 1 is composed of a polyethylene resin layer 2 by extrusion lamination, an aluminum foil layer 3 and a polyethylene resin layer 4 by sand lamination in order from the inner surface of the container.
[0038]
As the surface sheet 11, single-sided art paper (for example, a thickness of 127.9 g / m ² ) is used, and it is formed as a surface sheet of a lid by appropriately printing on the surface. In addition, a synthetic resin film or a composite film of paper and a synthetic resin film may be used.
[0039]
Moreover, as an easy release agent which forms the easy release layer 5, the easy release agent by the blend resin of urethane type resin, nitrified cotton (cellulose) type resin, nitrified cotton (cellulose), and urethane type resin etc. can be used.
[0040]
【The invention's effect】
The lid with the hot water hole of the instant food container of the present invention is used when cutting the hot water hole forming half cut into the easy peeling region of the lid material formed by laminating and bonding the top sheet and the composite sheet. There is an effect that it is possible to avoid unplanned irregular peeling between the top sheet and the composite sheet in the vicinity of the half cut for hot water cut hole formation due to the cutting pressure and impact of the half cutting die blade.
[0041]
The lid with a hot water hole of the instant food container of the present invention is a position corresponding to the formation of a half cut for forming a hot water hole and a position where an easy peeling layer is formed by forming an easy peeling agent pattern in the manufacturing process of the lid. In the half cut area adhesive part when cutting the hot water hole forming half cut from the composite sheet side so as to include all of the adhesive part in the half cut area using the cutting die blade for half cutting This eliminates the need for registering the position of the cutting die with the position of the punching blade, provides a greater tolerance than before, and facilitates registering work for easy-release agent coating and half-cutting, improving work efficiency. There is.
[0042]
As described above, the lid with a hot water cut hole of the instant food container of the present invention does not cause unscheduled irregular peeling between the composite sheet and the surface sheet along the outer peripheral portion of the adhesive portion in the half cut region. Half-cut processing is possible, which has the effect of improving the manufacturing quality of lids with hot-water holes, and requires high registration accuracy for patterning of easily peelable layers and high cutting accuracy for half-cutting as in the past. In addition, there is an effect that it can be easily manufactured without taking time and effort.
[0043]
Further, the lid with a hot water cut hole of the instant food container of the present invention has a hot water cut hole forming half cut formed with an inner diameter R, and the inner surface of the composite sheet and the top sheet in the hot water cut hole forming half cut region In addition, by forming an adhesive part in the half-cut region having an inner diameter r of 2R / 3 or less at least, the position corresponding to the formation of the hot-cut hole forming half-cut and the easy release agent pattern formation in the lid manufacturing process Half-cutting when cutting the half-cut for forming hot water cut holes from the composite sheet side so as to include all the adhesive parts in the half-cut area by using the punching blade for half-cutting and registering with the layer formation position In the registration of the position of the adhesive part in the area and the position of the punching blade, a larger tolerance is obtained than before, and the requirement of strict registration accuracy as before is eased, and easy peeling The registration work is facilitated in the coating formed by half-cutting, the effect of improving the working efficiency. Further, since the adhesion area between the top sheet and the composite sheet in the hot water cut hole forming half cut region can be increased, the composite sheet in the hot water cut hole forming half cut region adhered to the top sheet can be removed. Separation can be reliably prevented.
[Brief description of the drawings]
FIG. 1 (a) is a side sectional view of an embodiment of a lid with a hot water cut hole of an instant food container of the present invention, and FIG. 1 (b) is a plan view thereof.
FIG. 2 is a side view of an instant food container with a lid with a hot water hole of the instant food container of the present invention.
FIG. 3 is an enlarged cross-sectional side view illustrating a state where a lid with a hot water hole of the instant food container of the present invention is opened.
4A is a side sectional view of another embodiment of the instant food container according to the present invention, and FIG. 4B is a plan view thereof.
FIG. 5A is a side sectional view of a lid with a hot water cut hole of a conventional instant food container, and FIG. 5B is a plan view thereof.
FIG. 6 is a side view of an instant food container with a lid with a hot water cut hole of a conventional instant food container.
FIG. 7 is an enlarged side cross-sectional view illustrating a state in which a lid with a hot water hole of a conventional instant food container is opened.
[Explanation of symbols]
A ... Lid with hot water cut hole B ... Container L1 ... Easy peeling area L2 ... Adhesion area R ... Inner diameter of half cut for hot water cut hole formation r ... Inner diameter of adhesive part in half cut area 1 ... Composite sheet 5 ... Reticulated Peeling layer 6 ... Adhesion part 7 in the half cut region 7 ... Half cut for hot water cut hole formation 8 ... Hot water cut hole 9 ... Separation part 11 ... Surface sheet 12 ... Pull tab 13 ... Pull tab

Claims (3)

Easy peeling area and other adhesion area by easy peeling layer formed by applying easy peeling agent to composite sheet consisting of synthetic resin layer and aluminum foil layer and surface sheet including paper The hot-cut hole forming half-cut is formed in one or more of the composite sheets in the easy-peeling region, and the composite sheet in the hot-cut hole forming half-cut region and the superposition inner surface of the surface sheet, a hot water Setsuana lidded of instant food containers half-cutting area adhered portion without the easy peeling layer is formed, easily-peelable layer halftone dot of the easy peeling area A halftone dot pattern with a diameter of 0.5 to 1.5 mm, an area ratio of 60 to 90%, and an inner diameter R of the hot water cut hole forming half-cut is 5.5 mm ≦ R ≦ 6.5 mm. Bonding within the cut area Instant food containers Yu Setsuana lidded, wherein the inner diameter r of a 2.0 mm ≦ r ≦ 4.3 mm. Easy peeling area and other adhesion area by easy peeling layer formed by applying easy peeling agent to composite sheet consisting of synthetic resin layer and aluminum foil layer and surface sheet including paper The hot-cut hole forming half-cut is formed in one or more of the composite sheets in the easy-peeling region, and the composite sheet in the hot-cut hole forming half-cut region and the superposition inner surface of the surface sheet, the half-cut area adhered portion having no peelable layer is a hot water Setsuana lidded of instant food container formed, easily-peelable layer of the peelable region mesh pore size A half-cut area having a mesh pattern of 0.3 to 0.5 mm, an area ratio of 60 to 90%, and an inner diameter R of the hot water cut hole forming half cut of 5.5 mm ≦ R ≦ 6.5 mm. inscribed Instant food containers Yu Setsuana lidded, wherein the inner diameter r of the parts is 2.0 mm ≦ r ≦ 4.3 mm. 3. The instant food container according to claim 1 , wherein the inner portion of the half-cut region has an inner diameter r of 2R / 3 or less with respect to an inner diameter R of the hot water cut hole forming half cut. A lid with a hot water hole.

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