JP2003182769A - Sheet-like lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet-like lid excellent in sealing properties for a container and capable of easily, quickly, safely and reliably draining out hot water. <P>SOLUTION: The sheet-like lid is formed with a front base material and a rear base material, both being made of a transparent sheet and being laminated on each other with the aid of an adhesive layer. The lid is divided into a peel region, in which a release layer is provided between the layers of both the front base material and the rear base material, and a non-peel region adjacent to the peel region and having, at a peripheral edge thereof, a protruding lug piece both for unsealing the lid and for defining a hot water discharge opening. In the peel region, a tear-off line for peeling is provided in the vicinity of the non-peel region in the state that it extends from the rear base material, which is positioned on the inner face side of the lid, to the adhesive layer, and a plurality of belt-like non-release portions are formed except the tear-off line for peeling. Further, an annular tear-off line having latchets and for defining the hot water discharge opening is provided so that a part thereof is positioned at the non-release portions in the state that it extends from the rear base material, which is positioned on the inner face side of the lid, to the adhesive layer. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid used for a packaging container for instant noodles and the like, and more specifically, it removes noodles from hot water after reconstitution in the container like instant foods such as yakisoba and raw noodles. The present invention relates to a sheet-shaped lid body used for performing the application.

[0002]

2. Description of the Related Art Conventionally, containers such as yakisoba and raw noodles are used by returning the noodles to hot water and then draining them into a plastic molded container body such as expanded polystyrene or yakisoba or bagged raw noodles. Including the instant noodles, ingredients, seasonings, etc., the plastic molding lid with the cutouts that serve as hot water drain holes on the periphery is fitted into the plastic molding container body, and the whole is wrapped with a shrink film Is commonly used.

This type of container has a problem that the operation of attaching and detaching the lid to the container body is troublesome, and the operation of making a notch provided in the lid to secure a through hole is quite troublesome and the notch is raised by fingers. In case of injury to fingers, when notching to secure a through hole can be formed only in a part of the flange, it takes some time to drain the water. However, there is a risk that hot water will be spilled due to the large amount of hot water required to return the hot water to the capacity of the container.Therefore, you have to pay close attention to the problem. Occasionally, there is a risk of burns.When boiling water, the container must be tilted and discharged from the through hole, but since the noodles of considerable weight containing hot water are unevenly distributed on one side, the lid will come off the container body. Na As described above, the container body and the lid have to be pressed with a force greater than a predetermined amount, and the problem that the fingers are tired and the problem that they are hot, and the problem that the noodles that have been reconstituted in hot water sometimes spill from the container, and the container is a shrink Although it was covered with a film, there was a problem that the container body and the lid were not hermetically sealed, and insects and the like might enter.

[0004]

Therefore, the technical problem to be solved by the present invention is that the container is excellent in hermetic sealing property, and the hot water draining operation is simple, fast, safe, and reliable. It is to provide a sheet-like lid that can be cut.

[0005]

In order to solve the above-mentioned problems, the present inventor according to a first aspect of the present invention forms the opening of a bottomed container body having an opening on the upper surface. In a sheet-like lid body having substantially the same outer shape as the opening portion that is heat-bonded to the peripheral surface so as to be peelable by a peripheral heat-bonding portion and sealed
In the sheet-shaped lid, a front base material and a back base material made of a transparent sheet are laminated with an adhesive layer interposed therebetween, and a peeling region in which a release layer is provided between the front base material and the back base material. , A non-peeling area which is adjacent to the peeling area and has a knob projection for opening and also for forming a hot water outlet on the periphery of the peeling area is divided by a linear boundary line, and the peeling area is for peeling near the boundary line. A cut line is provided with regularity from the back base material that is the inner surface side to the adhesive layer, and a plurality of strip-shaped non-release parts that are parallel to the boundary line except the peeling cut line are formed.
Further, an annular cutting line having a pawl for forming a hot water outlet is provided in a state from the back base material which is the inner surface side to the adhesive layer so that a part thereof is regularly located in the non-release part. It is characterized by being present. The sheet-like lid configured in this manner is detachably heat-attached to, for example, a container body containing bag-shaped raw noodles, etc. When the sheet-shaped lid is peeled off from the container by grasping the projecting piece with your fingers, the peeling interface moves to the release layer provided between the front and back substrates at the peeling cut line. When it is further peeled off, the back base material in the part of the annular cutting line is peeled off integrally with the front base material, and only the hot water discharge lid consisting of the back base material on which the hot water outlet in the shape of the circular cutting line is formed later is attached to the container body. It remains glued. In this state, take out the bag-shaped raw noodles etc. contained in the container, open the bag and return only the raw noodles to the container, pour hot water into it and return it to the hot water, and then hot water from the hot water outlet of the hot water discharge lid. Cut off. As described above, the sheet-like lid of the present invention has excellent sealing property as a container, and can easily, quickly, safely, and reliably remove hot water without the trouble of hot water removing operation.

The present invention according to claim 2 provides the invention according to claim 1.
In the sheet-like lid described above, each of the annular cutting lines is provided such that a tip of the annular cutting line on the non-peeling region side is located in the non-release part.

According to a third aspect of the present invention, in the sheet-like lid body according to any one of the first and second aspects, each of the pawls provided on each of the annular cutting lines has the non-release part or the non-release part. It is characterized in that it is not provided on the non-peeling region side of the non-release part.

[0008] Any one of the above-mentioned claims 2 and 3, or
With any of the configurations, the hot water outlet can be formed more reliably.

Further, the present invention according to claim 4 is based on claim 1.
The sheet-like lid according to any one of items 1 to 3 is characterized in that the peeling region is provided with a knob projection for removing the drainage lid on the periphery thereof. With this configuration, when eating, the hot water discharge lid removing knob projection can be easily removed by grasping the finger gripping fingers and peeling them off, making it easy to eat. can do.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention described above will be described in detail below with reference to the drawings. 1 is a schematic perspective view of a container using a sheet-like lid body according to the present invention, FIG. 2 is a rear view showing an embodiment of a sheet lid body according to the present invention, and FIG.
X-ray enlarged cross-sectional view, FIG. 4 is an explanatory view showing the positional relationship between the non-release part provided in the peeling region of the sheet-like lid shown in FIG. 2 and the peeling cut line and the annular cutting line, and FIG. 5 is a sheet according to the present invention. FIG. 6 is an explanatory view of an annular cutting line provided in the lid-shaped lid, FIG. 6 is a plan view showing a state in which the container using the sheet-shaped lid according to the present invention is drained.
FIG. 7 is a view corresponding to FIG. 2 showing another embodiment of the peeling cut line provided on the sheet-like lid according to the present invention, and in FIG.
Is a sheet-like lid, 2 is a knob projection for opening and serving as a hot water outlet, 3 is a knob projection for removing hot water lid, 4 is a peeling area, 5 is a non-peeling area, 6 is a cutting line for peeling, 7 Is an annular cutting line, 7'is a hot water outlet, 10 is a front substrate, 20 is a back substrate, 30 is an adhesive layer, 4
0 is a release layer, 41 is a non-release part, 50 is a container, 51 is a container body, 71 is a pawl, F is a drainage lid, K is a boundary line, S is a tip end of the annular cutting line on the non-peeling region side, respectively. Show.

FIG. 1 is a schematic perspective view of a container using a sheet-like lid according to the present invention. A container 50 has an opening (not shown) on an upper surface of a container body 51 (not shown). ) Is formed on the upper peripheral surface (not shown) of the opening portion having a knob projection piece 2 for opening and also serving as a hot water outlet and a knob projection piece 3 for removing the hot water discharge lid, which are substantially opposed to each other ( A sheet-like lid 1 having substantially the same outer shape as that of the peripheral heat-bonding portion (not shown)
It is a bowl-shaped container that is heat-bonded and sealed so that it can be peeled off. In FIG. 1, the front side of the lid 1 is visible.

FIG. 2 is a rear view showing an embodiment of a sheet-like lid according to the present invention, FIG. 3 is an enlarged sectional view taken along line XX of FIG.
4 is an explanatory view showing the positional relationship between the non-release part provided in the peeling region of the sheet-like lid shown in FIG. 2 and the peeling cut line and the annular cutting line, and the sheet-like lid 1 is shown in FIGS. As shown, the front base material 10 and the back base material 20 made of a transparent sheet are laminated via the adhesive layer 30, and the release layer 40 is provided between the adhesive layer 30 and the back base material 20. The stripping region 4 and the non-stripping region 5 adjacent to the stripping region 4 are partitioned by a linear boundary line K, and the stripping region 4 and the non-stripping region 5 have a peripheral edge for removing the drainage lid. A knob protrusion 3 and a knob protrusion 2 for opening and forming a hot water outlet are provided, and a peeling cut line 6 is provided in the peeling region 4 in the vicinity of the boundary line K with the release layer 40 and the back substrate 20. Is provided in a zigzag shape with its apex portion in an uncut state, and the boundary except for the peeling cut line 6 is provided. A plurality of strip-shaped non-releasing portions 41 (four strip-shaped non-releasing portions in FIG. 4) that are parallel to the boundary line K are formed on the side opposite to K, and a pawl for forming a hot water outlet is further provided. The elliptical annular cutting line 7 (the pawl is not shown) has a part thereof located in the non-releasing portion 41 and penetrates through the back substrate 20 or the release layer 40 and the back substrate 20. Then, a plurality (15 in FIGS. 2 and 4) are provided. Therefore, the peeling cutting line 6 and the annular cutting line 7 can be seen from the back surface side (inner surface side) of the sheet-like lid 1 as shown in FIG. 2, but cannot be seen from the front surface side.

The number of the non-releasing portions 41 provided in the peeling area 4 is not limited to four, and the number of the annular cutting lines 7 is not limited to 15, and the shape is an elliptical shape. Not limited to, for example,
A circular shape, an oval shape, or a fan shape, a rhombus shape, a trapezoidal shape or the like that converges to the peeling direction side can be adopted, and it is sufficient that these annular cutting lines 7 are provided with regularity. In addition, the peeling cut line 6 is not limited to the zigzag shape illustrated above, and for example,
As shown in FIG. 7, a large number of diagonal lines may be arranged in a zigzag pattern, and although not shown, a C-shape, a V-shape, a one-character shape, a ten-character shape, It suffices that the X-shaped pattern be provided in a row or in a zigzag pattern in parallel with the boundary line K with a minute interval and in a regular manner. When the lid body 1 is peeled off from the container 50, the peeling interface moves from the place where the peeling cut line 6 is provided to the release layer 40, and the annular cutting line 7 forms the sheet-like lid body 1 from the container 50. When peeled off, the back base material 20 at the portion of the annular cutting line 7 is the front base material 10.
The first meaning is that the hot water outlet in the shape of the annular cutting line 7 is formed later by being peeled off integrally with the jig, and the jig used for providing the peeling cutting line 6 and the annular cutting line 7 In consideration of the ease of processing, the productivity of the sheet-shaped lid, the hot water removal speed, etc., the number of the non-release parts 41, the number, shape and size of the annular cutting lines 7, the peeling cutting lines 6 The shape, the method of providing, and the like should be appropriately determined.

FIG. 5 is a view for explaining the method of providing the annular cutting line of the sheet-like lid according to the present invention. The annular cutting line 7 shown in FIG. 5 (a) has four pawls 71 at the four positions. The tip S of each of the cut lines 7 on the non-peeling region side is provided so as to be present in the non-release part 41. When the sheet-shaped lid 1 is peeled off, the ring-shaped cutting line 7 thus formed surely has the back substrate 20 of the ring-shaped cutting line 7 from the tip S of the front substrate 10 made of a transparent sheet. Only the hot water discharge lid F, which is cut out in a state of being integrally adhered to the container, and which is composed of the back substrate 20 on which the hot water discharge port 7'in the shape of the annular cutting line 7 is formed, is bonded to the container body 51. The hot water can be drained from the hot water discharge port of the hot water discharge lid F. Further, the annular cutting line 7 shown in FIG. 5B has the pawls 71 provided at four positions as in the case of FIG. 5A, but the pawl 71 is provided at the non-release part 41 in FIG. 5B. 5 (c), the pawl 71 is not provided on the non-peeling region side of the non-release part 41, and the annular cutting line 7 formed in this way is similar to the above-mentioned sheet-like lid body. When 1 is peeled off, the back base material 20 at the portion of the annular cut line 7 is surely cut off in a state of being integrally bonded to the front base material 10 made of a transparent sheet, and the annular cut line is formed as shown in FIG. Hot water discharge lid F made of a backing base material 20 having a hot water discharge port 7'having a shape 7
Only the adhesive remains on the container body 51 and can be drained from the hot water discharge port 7'of the hot water discharge lid F. The hot water discharge lid F is easy to take out the bag of raw noodles and the like, and has a size that the noodles and the like do not flow out when hot water is removed. In the case of a bowl type container, it is smaller than 1/2 of the size of the opening. A size of about 1/3, which is larger than 1/4, is preferable. In addition, as a method of providing the annular cutting line 7, the pawl 71 is more than the pawl 71 at the start end portion in the peeling direction as compared with FIG. 5A.
5 (b) to 5 (c), in which is not at the starting end in the peeling direction, is preferable. Further, in FIG. 5, four pawls 71 are provided on one annular cutting line 7, but this is also 4
It is not limited to one, in short, the first meaning is that the annular cutting line 7 fulfills its function to form the hot water outlet 7 ′,
The shape, size, number of pawls, etc. of the annular cutting line 7 should be appropriately determined so as to satisfy this.

Next, the front base material and the back base material constituting the sheet-like lid of the present invention will be described. As a transparent sheet used for the front substrate 10, a beautiful printed pattern layer provided on the surface of the back substrate 20 on the side of the front substrate is provided so as to look luxurious as a printed pattern layer having a glossy feeling through the front substrate 10. In addition, it is one of the cores when peeling the sheet-shaped lid from the container, and is not particularly limited as long as it satisfies such conditions, for example, uniaxial polypropylene, polyester, polyamide and the like. A biaxially stretched film, an unstretched film, cellophane, or the like can be used. If necessary, these films are subjected to easy adhesion treatment such as corona discharge treatment, ozone treatment, and plasma treatment on necessary surfaces.

Further, as the back substrate 20, a printing substrate layer having a beautiful printed pattern layer on the surface and a plurality of parallel strip-shaped release layers 40 made of a release agent on the printed pattern layer. And a heat-adhesive resin layer for releasably heat-bonding to the container main body 51. An aluminum foil is used between the resin layer and the resin layer in consideration of workability. The ink for forming the printed pattern layer may be appropriately selected and used according to the material forming the printing base material layer, and the release agent for forming the release layer 40 may be the printed pattern. The same resin system as the ink that forms the layer, with silicone added,
Alternatively, it is possible to use one in which the release layer 40 is formed from a resin resin system different from the ink forming the print pattern layer so that the release is performed between the print pattern layer and the release layer 40. The coating amount is 1 to 1 after drying.
A thickness of 3 μm is suitable. The release layer 4 described above
The formation position of 0 is shown as an example and is not limited to this, and it may be provided between the printed pattern layer and the back substrate 20.

As the printing base material layer, in consideration of processing suitability such as printability and cost, a paper of 40 g / m ² or more,
Specifically, 60 g / m ² coated paper or bleached kraft paper is suitable. In addition, the heat-adhesive resin layer needs to be configured to be heat-bonded to the container body 51 in a peelable manner, and it is important to appropriately select and use it depending on the material forming the container body 51. The container body 51 is made of polystyrene paper, high-impact polystyrene sheet,
Polypropylene sheet, laminated sheet of polyamide and polyethylene or polypropylene, laminated sheet of polyethylene and polypropylene, etc. molded by well-known vacuum molding method or pressure molding method into a container, for injection molding of polypropylene, polystyrene, polyester, etc. A resin injection-molded container, or a multi-layered injection-molded resin injection-molded to provide, for example, an oxygen gas barrier property, or a foamed styrene container,
Since a paper container, or a double container composed of these is used, the heat-adhesive resin layer is polyethylene, polypropylene, polybutene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, chlorinated. Polyethylene, chlorinated polypropylene, ionomer resin, vinyl chloride-vinyl acetate copolymer, acrylic acid resin, methacrylic acid resin, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-acrylic acid ester copolymer By appropriately selecting and using ethylene-methacrylic acid ester copolymer, polyester resin, or the like, it is possible to peelably heat-bond to the container body 51.

[0018]

EXAMPLES Next, the present invention described above will be specifically described with reference to the following examples. Example 1 A roll of coated paper (60 g / m ² ) and an aluminum foil (7 μm) were mixed with a T-die extruder to form a low-density polyethylene.
While extruding to a thickness of 5 μm for sandwich lamination, an ethylene-methacrylic acid copolymer was extruded to a thickness of 20 μm on the back surface of the aluminum foil (7 μm) with a T-die extruder to prepare a backing substrate. After that, a beautiful printed pattern is printed on the paper surface of the back substrate, and 3 m at a predetermined position on the printed pattern.
Four strip-shaped release layers having a width of 15 mm and spaced at m intervals are endlessly printed in parallel with the winding direction by a gravure printing method, and a protruding blade that forms a peeling cutting line and an annular cutting line as shown in FIG. 2 is processed endlessly in the winding direction so as to penetrate the back substrate from the release layer side by a die roll provided on the circumference at a predetermined interval (winding direction and a direction orthogonal to the winding direction), A backing base material with cut lines in which peeling cut lines and annular cut lines are formed was prepared. Next, the surface of the biaxially stretched polyethylene terephthalate (12 μm) serving as the front substrate is coated with the urethane adhesive serving as the adhesive layer on the corona discharge treated surface, and the release layer surface of the back substrate with cut lines is attached to the dried surface. A laminated material, which is the sheet-like lid body of the present invention, was produced.
This laminated material is cut into large pieces and processed into small pieces,
The sheet-shaped lid body of the present invention was obtained by punching into the shape shown in FIG. The sheet-like lid is heat-bonded to the polystyrene container body with a cup sealer to produce the container shown in FIG.
After that, when the knob projection 2 for opening and drainage opening formation shown in FIG. 1 is gripped with fingers and peeled off, as shown in FIG. 6, a backside on which a drainage opening 7 ′ having the shape of the annular cutting line 7 is formed. Base material 2
Only the hot water discharge lid F consisting of 0 remained in the state of being adhered to the container body 51, and it was possible to remove the hot water. Also, the hot water discharge lid F can be easily removed by pinching the hot water discharge lid removing knob projection 3 (see FIG. 6) with fingers and peeling the hot water discharge lid F in a comfortable state. It was

In the above description, the printed pattern layer and the release layer 40 are provided on the surface of the back substrate 20 as an optimum example. However, the printed pattern layer and the release layer 40 are the front substrate. 10
By providing the back surface (the surface of the front base material 10 on the back base material 30 side), the same hot water removal state can be obtained. Further, the adhesive layer 30 may be an adhesive layer made of the urethane-based adhesive shown in the embodiment, or may be a polyethylene layer formed by the sandwich lamination method. However, an anchor coating agent for improving the adhesive strength with the polyethylene layer is applied to the surfaces of the front base material 10 and the back base material 20 that come into contact with the polyethylene layer, if necessary. Furthermore, when the adhesive layer 30 is formed of an adhesive layer, in order to prevent the release effect of the release layer 40 from being reduced by the influence of the adhesive layer, the release layer 40 and A resin layer may be provided between the adhesive layers 30 with ink or the like.

As described in the embodiments, the sheet-like lid of the present invention has a strip-shaped release layer, a strip-shaped non-release portion formed by the strip-shaped release layer, a peeling cut line, and an annular cut line for the roll. Since only the direction orthogonal to the take-up direction can be aligned and the endless arrangement can be provided in the take-up direction, and the production can be performed that much, the production can be performed with high productivity.

[0021]

As described above, the sheet-like lid of the present invention is heat-bonded and attached to the container body, and the sheet-like lid of the container provided with the sheet-like lid is unsealed. For removing the sheet-shaped lid by peeling the sheet-shaped lid from the container by pinching the projection with the fingers, the peeling interface of the sheet-shaped lid is between the front and back substrates. Moving to the release layer provided and further peeling off in this state, the back base material of the portion provided with the annular cutting line is peeled off integrally with the front substrate, and a hot water outlet in the shape of the annular cutting line is formed later. Further, only the hot water discharge lid made of the back substrate can be left in a state of being adhered to the container body, and the hot water can be drained from the hot water discharge port of the hot water discharge lid. Further, the hot water discharge lid can be easily removed by pinching the finger gripping knob for removing the hot water discharge lid and peeling it off, so that the user can comfortably eat. As described above, the sheet-like lid of the present invention has excellent sealing property as a container, can be easily, quickly, safely, and reliably drained the bath without the trouble of hot-water draining operation and is pleasant to eat. It has an excellent effect that can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a container using a sheet-shaped lid according to the present invention.

FIG. 2 is a back view showing an embodiment of the seat lid according to the present invention.

FIG. 3 is an enlarged sectional view taken along line XX of FIG.

FIG. 4 is an explanatory diagram showing a positional relationship between a non-release part provided in a peeling region of the sheet-like lid body shown in FIG. 2 and a peeling cut line and an annular cut line.

FIG. 5 is an explanatory view of an annular cutting line provided on the sheet-like lid according to the present invention.

FIG. 6 is a plan view showing a state in which a container using the sheet-shaped lid according to the present invention is drained.

FIG. 7 is a view corresponding to FIG. 2 showing another embodiment of the peeling cut line provided on the sheet-like lid according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Sheet-shaped lid 2 Knob protrusion 3 for opening and hot water outlet forming 3 Knob protrusion for removing hot water lid 4 Peeling area 5 Non-peeling area 6 Peeling cut line 7 Annular cutting line 7'Mouth drainage port 10 Base material 20 Backing base material 30 Adhesive layer 40 Release layer 41 Non-release part 50 Container 51 Container body 71 Pawl F Hot water discharge lid K Boundary line S Annular cutting line non-peeling area side tip

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kenji Takahashi             Kyoto, Ukyo-ku, Uzumasa Shangbu-cho, 10 Dai Nippon             Printing Co., Ltd. F-term (reference) 3E067 AB01 AB99 BA02C BA12B                       BA20C BB01C BB04C BB12C                       BB14B BB14C BB15C BB16C                       BB17C BB25C BB26C BC07C                       CA06 CA24 EA06 EA11 EA13                       EA15 EA32 EA34 EA35 EA36                       EB02 EB03 EB05 EB06 EB11                       EB29 EE02 EE48 EE59 FA01                       FA04 FC01 GB07 GD07 GD08                       GD10

Claims (4)

[Claims] 1. An outer shape substantially the same as that of the opening portion which is peelably heat-sealed and sealed by a circumferential heat-bonding portion on an upper peripheral surface of the bottomed container body having the opening portion on an upper surface thereof. In the sheet-shaped lid body having, the sheet-shaped lid body, a front base material and a back base material made of a transparent sheet are laminated via an adhesive layer,
A non-peeling area having a peeling area in which a release layer is provided between the front base material and the back base material, and a peeling area adjacent to the peeling area and having a knob projection for opening and discharging a hot water at the periphery thereof. And is divided by a linear boundary line, in the peeling region in the vicinity of the boundary line is provided with a regularity in the state from the back base material the peeling cutting line is the inner surface side to the adhesive layer,
Except for the peeling cut line, a plurality of strip-shaped non-release parts parallel to the boundary line are formed, and further an annular cut line having a pawl for forming a drainage hole has regularity, and a part of the non-release line is formed. A sheet-like lid body, which is provided in a state from the back base material that is located on the inner surface side to the adhesive layer. 2. The sheet-like lid body according to claim 1, wherein each of the annular cutting lines is provided such that a tip of the annular cutting line on the non-peeling region side is located in the non-release part. . 3. The pawl provided on each of the annular cutting lines is not provided on the non-releasing portion or on the non-peeling region side with respect to the non-releasing portion. The sheet-shaped lid according to any one of 1. 4. The sheet-like lid body according to claim 1, wherein the peeling area is provided with a knob projection for removing a hot water lid on the periphery thereof.