JP2002160778A - Lid material with hot water dripping function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid material with hot water dripping function which is used for a container of instant food or the like requiring hot water dripping and which has simple process and easy production control for exposing a hole for dripping hot water of the lid material, and thus reduces production cost. SOLUTION: The lid material with hot water dripping function 1 has a rear surface which is sealed to a flange of a container body, a pull tab for opening a lid and a pull tab for opening a hole for dripping hot water on the peripheral edge. This lid material 1 has a laminated structure wherein a sealant layer 16 is laminated on the rear surface of substrate 11 having at least a paper layer 14. Perforations or a folding line 24 is formed on a border between a non-peeling area M2 and a peeling area M1 on the surface of the substrate 11, and one or a plurality of half cuts 50 for forming a hole for dripping hot water are engraved from the sealant layer within the peeling area M1 to an almost intermediate part of the paper layer which constitutes the substrate 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid material for a container used for hermetic packaging of instant foods such as fried noodles, and more particularly to a hot water outlet for discharging hot water injected to soften instant foods. The present invention relates to a lid member having a hot water draining function.

[0002]

2. Description of the Related Art A conventional lid material having a hot water draining function for an instant food container or the like is, for example, as shown in a side sectional view of FIG. 7, of a topsheet (20) provided with a breakthrough hole (77). There is a laminate in which an aluminum foil (19) and a sealant layer (16) are laminated on the back surface. With this lid material, the piercing hole (77) is unintentionally torn during transportation or the like. The aluminum foil (19) and the sealant layer (16) must be pierced from the piercing hole (77) with chopsticks or the like, so that chopsticks or the like are required and the size and shape of the torn opening are constant. As a result, there is a problem that the hot water can not be drained smoothly and there is a risk that breakage debris may be mixed into the food or the like.

As a lid material recently developed to solve these problems, for example, a hot water spout for sealing and packaging instant food as shown in a side sectional view of FIG. 8A and a plan view of FIG. 8B. There is a detachable lid material (3). It has a topsheet (20) on the outside and its inside (food side)
The composite sheet (10) (from the inner surface, for example, a sealant layer (16) / aluminum foil (19) / adhesive resin layer (1
5)), and is a sheet-like lid (for example, a circular shape) in which the composite sheet (10) and the topsheet (20) in a partial area extend from the outer peripheral arc portion of the lid to the inside thereof. An easy-release layer (30) formed by applying an easy-release agent (release varnish) to the inner surface of the superposition.
And the other inner surface of the composite sheet (10) and the topsheet (20) is provided with an adhesive area (L2) in an adhered state.

[0004] In one to several places of the composite sheet (10) in the easy-peeling area (L1), a half-cut (50) for forming a hot-water hole having an inner diameter R is formed. On the inner surfaces of the composite sheet (10) and the topsheet (20) in the cut-cut forming half-cut (50) region, the adhesive portion (60) in the half-cut region having an inner diameter r (the portion where the easily peelable layer (30) is not formed). Is provided, and the composite sheet (10) and the topsheet (20) are bonded to each other at the bonding portion (60) in the half-cut area.

As shown in the side sectional view of FIG. 9, the instant food container having the above structure has a peelable lid (3) at the upper end of the instant food container (2). The container (2) is hermetically packaged by adhesively sealing the opening flange portion (21) to form an instant food container in which the instant food is hermetically packaged.

The container (2) in which the ready-to-eat food is hermetically sealed as described above is pulled up by pulling up the opening pull tab (12) on the outer periphery of the lid member on the side of the bonding area (L2) shown in FIG. From the flange portion (21) of the container (2) to the bonding area (L
2) The composite sheet (10) on the side is partially peeled off and opened, and after pouring hot water through the opening, the opening pull tab (12) on the outer periphery of the lid material is again folded outside the flange portion (21). Cover and leave for a few minutes to soften the instant food (not shown) in container (2).

[0007] Thereafter, the easily peeled area (L) shown in FIG.
Pulling up the hot water outlet opening pull tab (12) on the outer periphery of (1), as shown in the side sectional view of FIG. 10, the top sheet (20) of the easily peelable area (L1) is combined with the composite sheet (1).
0), and separates the composite sheet (10) in the region of the half-cut (50) for forming a hot water spout, which is adhered to the top sheet (20).
After a hot water spout (70) having a stable inner diameter R is formed in the container (2), the container (2) is tilted so that the hot water in the hot water spout (7) is removed.
0).

As shown in the perspective view of FIG. 11, for example, a perforation (22) is formed from the surface of the top sheet at the boundary between the easy peeling area (L1) and the bonding area (L2). At the periphery of the slightly easier peeling area (L1) side, there is a removable lid material (3) with a hot water cutout opening formed with a pull tab (13) for opening a hot water cutout. In this case, the opening of the hot water cutout (70) is The opening pull tab (13) is pulled up to break the perforations (22) in order along the perforations (22), and the top sheet (2) of the easy peeling area (L1) is broken.
0) is peeled off from the composite sheet (10), and the composite sheet (10) in the half-cut region for forming the hot water cutout which is adhered to the top sheet (20) is cut off. In some cases, after the formation of (70), the container (2) can be tilted to discharge the hot water therein from the hot water outlet (70).

[0009]

However, in the above-mentioned releasable lid material with a hot water spout (3), a non-easy peeling portion having an inner diameter r, that is, an easy release agent, is provided on the easy release layer (30) on the back surface of the topsheet. Therefore, it is easier to form a non-coated portion, that is, to form a pattern, to form a pattern, and to perform a half cut (50) for forming a hot water with an inner diameter R so as to cover the non-coated portion, that is, the adhesive portion (60). It is difficult to control the release property of the release agent, and as a result, there is a problem that the production cost increases.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a cover for a container for instant food or the like that requires a hot water drainer to expose a hot water outlet. Processing of the lid material is simple and easy to control production, as in the past, without the difficulty of forming non-peelable parts, controlling the releasability of the easily peelable layer, and controlling the position accuracy of the half-cut. An object of the present invention is to provide a lid member with a hot water draining function which does not increase cost.

[0011]

According to the present invention, in order to achieve the above object, according to the present invention, there is provided a lid material having a rear surface sealed to a flange portion of a container body, which is substantially the same as the flange portion. In a lid material having a layer configuration in which an outer shape has an opening pull tab and an opening port pull-tab on an outer peripheral edge, and a sealant layer is laminated on a back surface of at least a substrate having a paper layer, A perforation or a crease is applied to a boundary line between a non-peeling area where a pull tab for opening is continuously provided and a peeling area where a pull tab for opening a hot water outlet is continuously provided from the surface of the substrate, and a base material is formed from a sealant layer in the peeled area. One or a plurality of half-cuts for forming a hot-water outlet are engraved substantially at the center of the paper layer to be formed.

According to the first aspect of the present invention, the lid with the hot water draining function basically has a simple configuration consisting of a paper layer and a sealant layer. It does not require such an easy-peeling layer, has no difficulties such as formation of a patterned non-peeling part, management of the releasability of the easy-peeling layer and control of the position accuracy of the half-cut, and easy production management. That is, it is possible to provide a lid member with a hot water draining function that does not increase the production cost. In addition, since an easily peelable layer is not required, the cover material contributes to a reduction in material cost.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. The lid member with the hot water draining function of the present invention is a lid member whose back surface is sealed to a flange portion of the container body, has substantially the same outer shape as the flange portion, and has, for example, a circular shape as shown in the plan view of FIG. Pull-tab for opening (1
2) and a hot water cut-out opening pull tab (13), and a non-peeling area (M2) where the opening pull tab (12) is continuously provided and a peeling area (M1) where the hot water cut-out opening pull tab (13) is continuously provided. A fold line (24) is applied to the boundary line of the paper layer (14), the adhesive resin layer (15), and the aluminum foil (1) from the surface as shown in the side sectional view of FIG.
9) is used as a base material (11), and a sealant layer (16) is laminated on the back surface, that is, on the content side, and the sealant layer (16) in the peeling area (M1) is separated from the base material (1).
A cover member (1) with a hot water cutting function, in which a plurality of half water cut forming half cuts (50) are engraved almost to the middle of the paper layer (14) constituting 1).

As shown in the side sectional view of FIG. 3, the lid member (1) with the hot water draining function is opened by pulling an opening pull tab (not shown) on the outer periphery of the lid member on the non-peeling area (M2) side. After pulling up, the sealant layer (16) on the non-peeling area (M2) side is partially peeled off from the flange part (21) of the container (2) to open it, and after pouring hot water through the opening, the outer periphery of the lid material is opened. Open the pull tab for opening again to the outside of the flange portion (21), cover the container, and leave it for a few minutes to prepare the container (2).
Soften the ready-made food (not shown) inside.

Then, the pull tab (12) for opening the hot water outlet on the outer periphery of the peeling area (M1) shown in FIG. 2 is pulled up, and as shown in FIG. 3, the base material (1) of the peeling area (M1) is pulled up.
The adhesive resin layer (1) in the half cut (50) region for forming a hot water cutout, which is delaminated from substantially the middle of the paper layer (14) constituting the (1) and is adhered to the paper layer (14).
5), aluminum foil (19), sealant layer (16)
Is separated, and the paper layer (1
4), adhesive resin layer (15), aluminum foil (1
9) After forming a stable size hot water spout (70) consisting of the sealant layer (16), the container (2) is tilted so that the hot water inside can be discharged from the hot water spout (70). Has become.

Further, as another embodiment of the lid member with the hot water draining function of the present invention, as shown in a plan view of FIG. 4, for example, an opening pull tab (12) and a hot water port opening pull tab ( 13), and a sewing machine is provided on the boundary between the non-peeling area (M2) where the opening pull tab (12) is continuously provided and the peeling area (M1) where the hot water outlet opening pull tab (13) is continuously provided. An eye (22) is applied and this perforation (2
2) It is also possible to provide a lid member (1) with a draining function provided with the pull-out opening pull tab (13) on the side of the peeling area (M1) slightly more.

As shown in the plan view of FIG. 4, the non-peeled area (M)
2) Pull up the opening pull tab (12) on the outer periphery of the lid material, and as shown in the perspective view of FIG. 5, sealant on the non-peeling area (M2) side from the flange portion (21) of the container (2). After the layer (not shown) is partially peeled off and opened, hot water is injected from the opening, and then the opening pull tab on the outer periphery of the lid material is folded back to the outside of the flange portion (21) again. And leave it for a few minutes to soften the instant food (not shown) in the container (2).

Thereafter, as shown in FIG.
The paper constituting the base material of the peeling area (M1) while pulling up the hot water outlet opening pull tab (13) on the outer periphery of 1) and tearing the perforations (22) in order along the perforations (22). The adhesive resin layer, aluminum foil, and sealant layer (16) in the half-cut (50) area for forming a hot water spout, which are delaminated from about the middle of the layer (14) and adhered to the paper layer (14). The layer made of the adhesive resin layer, the aluminum foil, and the sealant layer having the surface of the paper layer (14) remaining after delamination was cut out, and a hot water cutout (70) having a stable size was formed. Thereafter, the container (2) can be tilted to discharge the hot water therein from the hot water spout (70).

As described above, the lid material (1) with the hot water draining function of the present invention requires an easy-peeling layer (30) as the conventional lid material (3) with the hot water drain opening shown in FIG. The production management is easy, that is, the production management is simple, that is, there is no need to form a patterned easy-peeling layer (30), control the releasability of the pattern, and control the positional accuracy of the half-cut (50) for forming a hot water outlet. It is possible to provide a lid member with a hot water draining function that does not increase cost.

As shown in FIG. 3, for example, when the opening of the hot water spout (70) is opened, the paper layer (1) in the peeling area (M1) is opened.
Substrate (11) that has been delaminated from about the middle of 4) and remained
The laminate of the peeled area (M1) composed of the sealant layer (16) and the sealant layer (16) needs strength to withstand the weight of the contents when the hot water is removed, but the paper layer (14) remaining after delamination is bonded. The thickness of the aluminum foil (19) laminated to provide, for example, a light-shielding property, a barrier property, and a dead-hold property (a property capable of maintaining a peeled state) because the resin layer (15) is interposed therebetween. Can be made about 2 to 5 μm thinner than before, so that a lid material (1) with a draining function that contributes to a reduction in material cost in combination with a release agent for forming a release layer can be obtained.

As shown in the schematic side sectional view of FIG. 6 (a), the layer structure of the lid member (1) with the hot water draining function of the present invention basically comprises a paper layer (14) as a base material (11). The sealant layer (16) is laminated on the back surface. At this time, the half cut (50) for forming the hot water outlet is cut from the sealant layer (16) side to the substantially middle of the paper layer (14).
Further, as shown in FIG. 6B, for example, a base material (11) in which an aluminum foil (19) for giving a light shielding property or a dead hold property to a paper layer (14) is laminated with an adhesive resin layer (15). There is a lid member (1) with a hot water draining function in which a sealant layer (16) is laminated on the back surface of the (1). At this time, the half cut (50) for forming the hot water outlet is engraved with the sealant layer (1).
6) From the side, aluminum foil (19), adhesive resin layer (1)
5) to about the middle of the paper layer (14). Furthermore, as shown in FIG. 6C, for example, a protective layer (17) made of a polyethylene film or the like is laminated on the surface of the paper layer (14) and a barrier layer (18) made of a polyvinyldene film is laminated on the back surface. As a base material (11), there is a lid material (1) with a hot water cutting function in which a sealant layer (16) is laminated on the surface of the barrier layer (18). The sealant layer (1
6) From the side through the barrier layer (18) to about the middle of the paper layer (14), it does not participate in the protective layer (17) on the surface.

Hereinafter, the materials used for the lid member (1) with a hot water draining function of the present invention will be described. First, as the paper layer (14) of the base material (11) constituting the lid member (1) with the hot water draining function of the present invention, one having at least a white surface and suitable for multicolor printing is preferable. m ^{2 to} 135 g / m
^{About 2} double-sided art paper, single-sided art paper, double-sided coated paper, single-sided coated paper, and the like can be suitably used.

The sealant layer (16) constituting the lid member (1) with a draining function according to the present invention is, for example, a linear low-density polyethylene (LLDP) having excellent heat sealability.
E), low density polyethylene (LDPE), high density polyethylene (HDPE), unstretched polypropylene (CPP)
Or ethylene / vinyl acetate copolymer (EVA), ethylene / acrylic acid copolymer (EAA), ethylene / methacrylic acid copolymer (EM
A film of an ethylene copolymer resin such as AA) is suitably used, and a mixture of these polyolefin resins with a component incompatible with the polyolefin resin, such as polystyrene or polybutene, can also be used. Also,
Coating amount of hot melt adhesive consisting of ethylene / vinyl acetate copolymer resin, ethylene / acrylic acid copolymer resin, etc. 1
May be provided with 5 to 25 g / m ² approximately, the flange portion of the container (2) by these sealant layers (16) (21)
And the peeling-opening property can be made possible.

It is common to laminate an aluminum foil (19) on the base material (11) in consideration of the preservability such as light shielding and gas barrier against foods and the like. Like the lid member (1) with the hot water draining function of the present invention, when a part is opened and peeled, and hot water is poured, the lid member keeps the peeled state (called dead hold property). Then, the hot water is preferably used because it is safe and easy to pour.

As the adhesive resin layer (15) for bonding the aluminum foil (19) to the paper layer (14), for example, polyethylene resin, ionomer resin by hot melt extrusion, A polypropylene resin or the like is preferably used, but is not limited thereto.

The above-mentioned lid material (1) with a hot water draining function of the present invention is suitable as a lid material for containers such as instant noodles and instant noodles, which are softened by pouring hot water and then eaten after hot water is drained. It is used for.

[0027]

As described above, the present invention has the following effects. That is, the back surface is a lid material sealed to the flange portion of the container body, has an opening pull tab and a hot water opening opening pull tab on the outer peripheral edge, and a sealant layer is laminated on the back surface of at least a base material having a paper layer. In the lid member having a layer draining function, a perforation or crease is applied to a boundary line between a non-peeling region where a pull tab for opening is continuously provided and a peeling region where a pull tab for opening a drain hole is continuously provided from the surface of the base material. One or a plurality of half-cuts for forming a hot water outlet are engraved from the sealant layer in the peeling region to substantially the middle of the paper layer constituting the base material. Since the configuration is basically a simple configuration consisting of a paper layer and a sealant layer, there is no need for an easy-release layer such as a conventional hot-water-peelable release lid material, and thus a patterned non-peelable portion is not required. Formation and peeling of easily peelable layer Sexual management, there is no difficulty in management of the positional accuracy of the water cut forming the half-cut, production control is easy, that is, the hot water cutting function with lid material production cost is not Kasama.

At the time of opening the hot water outlet, the laminate in the peeling area consisting of the base material and the sealant layer, which has been delaminated from substantially the middle of the paper layer in the peeling area, has the weight of the contents when the hot water is removed. Although it requires strength to withstand, the paper layer left after delamination is laminated via the adhesive resin layer,
For example, the thickness of the aluminum foil laminated to impart light-shielding properties and dead-hold properties can be made thinner than in the past. A lid with a hot water draining function that contributes to cost reduction can be provided.

Therefore, the present invention exerts an excellent practical effect as a lid material having a hot water draining function for a container which is poured into boiling water, such as instant yakisoba or instant raw noodles, softened and then drained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of a lid member with a hot water draining function of the present invention in a side cross section.

FIG. 2 is an explanatory view showing an embodiment of a lid member with a hot water draining function according to the present invention in a plan view.

FIG. 3 is an explanatory view showing an embodiment of the lid material with a hot water draining function of the present invention in which a hot water drain opening is opened in a side cross section.

FIG. 4 is a plan view illustrating another embodiment of the lid member with a hot water draining function of the present invention.

FIG. 5 is a perspective view for explaining another embodiment of the lid member with a drainer function of the present invention in which the drain opening is opened.

FIG. 6 is a view for explaining a layer structure of a lid member with a hot water draining function of the present invention, wherein (a) is a side sectional view of one example thereof;
(B) is a side sectional view of another example, and (c) is a side sectional view of still another example.

FIG. 7 is a side sectional view illustrating an example of a conventional lid member with a hot water outlet.

8A and 8B illustrate an example of a conventional detachable lid material with a hot water cutout, in which FIG. 8A is a side sectional view, and FIG.
It is the top view.

FIG. 9 is a side sectional view for explaining an example in which a conventional detachable lid material with a hot water outlet is integrated with a container.

FIG. 10 is an example of a side sectional view in which a surface sheet of a conventional releasable lid material with a hot water hole is peeled to form a hot water hole.

FIG. 11 is another example of a side sectional view in which a surface sheet of a conventional detachable lid material with a hot water cutout is peeled off to form a hot water cutout.

[Explanation of symbols]

 1 lid material with hot water draining function 2 container 3 peelable lid material with hot water cutout 10 composite sheet 11 base material 12 pull-tab for opening 13 pull-tab for hot water opening 14 Paper layer 15 Adhesive resin layer 16 Sealant layer 17 Protective layer 18 Barrier layer 19 Aluminum foil 20 Surface sheet 21 Flange 22 Perforation 24 Folding 30 {Easy peeling layer 50} Half cut for forming hot water cutout 60} Adhesive portion in half cut area 70 {Hot cutout 77} Hole for breakthrough L1 {Easy peeling area L2} Adhesive area M1} Peeling area M2 ‥‥ Non-peeling area R ‥‥ Inner diameter of half cut for hot water cutout r ‥‥ Inner diameter of adhesive in half cut area

Claims (1)

[Claims] 1. A cover material having a back surface sealed to a flange portion of a container body, having substantially the same outer shape as the flange portion, having an opening pull tab and a hot water opening opening pull tab on an outer peripheral edge, and having at least a paper layer. In a lid material with a water draining function having a layer structure in which a sealant layer is laminated on the back surface of a base material, in a non-peeling area where a pull tab for opening is continuously provided from the surface of the base material and in a peeling where a pull tab for opening a hot water hole is continuously provided. Perforations or creases are applied to the boundaries of the areas, and one or a plurality of half cuts for forming a hot water outlet are engraved from the sealant layer in the peeling area to substantially the middle of the paper layer constituting the base material. A lid material with a hot water draining function.