JP6566710B2 - Lid with hot spot - Google Patents

Description

  The present invention relates to a lid material with a hot spot. More specifically, the present invention relates to a lid for a food container having a hot spot for heating seasonings and the like.

  When preparing instant noodles in cups, after-filling materials such as seasonings and ingredients may be added several minutes after pouring hot water. In that case, while waiting for several minutes, the package of the post-insert material may be placed on the cover material to warm the post-add material.

  A lid member having a hot spot for warming such a post-inserting material is known. For example, Patent Document 1 discloses an instant noodle container that gives a deep dent to the lid member and uses the deepest part of the dent as a hot spot. By pouring hot water up to a high position of the container body, the deepest recess of the lid material comes into contact with hot water. Since the deepest part of the recess is heated with hot water, the post-inserting material is heated by placing the post-inserting material in the deepest part of the recess.

  Patent document 2 is disclosing the food container which provided the hot spot inside the lid | cover material. In this food container, the lid is composed of an upper lid, an auxiliary material container, and an inner lid. An auxiliary material container is arrange | positioned between a container main body and an upper cover, and a post-inserting material is put. The inner lid is arranged to support the auxiliary material container from below. Since the auxiliary material container is inside the upper lid, the later-inserted material can be warmed by pouring hot water into the container body.

Japanese Utility Model Publication No. 6-35176 JP 2009-132430 A

  However, in the lid material of the instant noodle container of Patent Document 1, since it is necessary to form a recess, the lid material needs to be made of a rigid material. In this case, there is a problem that it is difficult to improve the airtightness because the lid member is a fitting type.

  Moreover, the food container of patent document 2 was comprised from four members, a container main body, an upper cover, an auxiliary material container, and an inner cover, and there existed a subject that cost started since the structure was complicated.

  Then, an object of this invention is to provide the cover material with a hot spot of a simple structure which can improve airtightness, and a container with a cover material using the same.

The present inventors have found that the above problems can be solved by the present invention having the following aspects.
<< Aspect 1 >>
A lid material having an inner layer and an outer layer, wherein a hot spot for warming a post-insert material is exposed by peeling a part of the outer layer from the inner layer.
<< Aspect 2 >>
The lid | cover material of the aspect 1 which has an opening part in the said hot spot.
<< Aspect 3 >>
The lid | cover material of the aspect 2 with which the said opening part is used also as a hot water cutting hole.
<< Aspect 4 >>
The aspect 1 or 2 in which the outer layer and the inner layer further have a peeling portion that can be peeled at a position different from the hot spot, and the hot water cut-out hole is exposed by peeling the peeling portion. Cover material.
<< Aspect 5 >>
The lid | cover material as described in any one of aspects 1-4 which has a display which can recognize that it is a place for warming a post-insert material in the said hot spot or the said outer layer.
<< Aspect 6 >>
The lid | cover material as described in any one of aspects 1-5 with which easily peelable resin exists in the surface of the said exposed hot spot.
<< Aspect 7 >>
The lid | cover material as described in any one of aspects 1-6 in which the said inner layer has heat-sealability.
<< Aspect 8 >>
It has a tab for opening the lid material that constitutes a part of the outer shape of the lid material, and a tab for hot spot expression, and the lid material is removed from the container to which the lid material adheres using the tab for opening the lid material. The lid | cover material as described in any one of the aspects 1-7 in which the said tab for hot spot expression exists in the area | region where the said lid | cover material peels when peeling to half.
<< Aspect 9 >>
The container with a lid | cover material which has a lid | cover material as described in any one of the aspects 1-8 adhere | attached on the container main body and the said container main body.
<< Aspect 10 >>
The container with a lid material according to aspect 9, containing instant noodles and post-insert material.

  ADVANTAGE OF THE INVENTION According to this invention, the cover material with a hot spot of the simple structure which can improve airtightness can be given.

Fig.1 (a) has illustrated the cover material of this invention. FIG.1 (b) has illustrated the usage aspect of the container with a lid | cover material of this invention which has put the post-inserting material in the hot spot. FIG.1 (c) has illustrated the usage aspect of the container with a lid | cover material of this invention which has exposed the hot water cutting hole. Fig.2 (a)-(f) has illustrated the various aspects of the cover material of this invention. FIG. 3 illustrates the display of the lid of the present invention. FIG. 4 is a schematic view illustrating the laminated configuration of the lid material used in the present invention.

  Hereinafter, embodiments of the present invention will be described in detail. Note that the present invention is not limited to the following embodiments, and can be implemented with various modifications within the scope of the gist of the present invention.

《Cover with hot spot》
The lid material with a hot spot of the present invention includes an inner layer and an outer layer, and exposes a hot spot by peeling an area of the outer layer covering the hot spot (hereinafter referred to as “hot spot coating portion”). Can do. Moreover, the cover material with a hot spot of the present invention may be exposed without a hot spot coating portion.

The thickness of the lid material of the present invention may be, for example, 50 μm or more, 70 μm or more, or 90 μm or more, and may be 250 μm or less, 200 μm or less, or 150 μm or less. The area of the cover material of the present invention is, for example, 50 cm ² or more, 70cm ² or more, 100 cm ² or more, or can be a 150 cm ² or more, 700 cm ² or less, 600 cm ² or less, 500 cm ² or less, or 400 cm ² or less It can be.

<Cover opening tab>
The lid material with a hot spot of the present invention may have a lid material opening tab that is a knob portion or the like for facilitating peeling from the container. The lid opening tab preferably constitutes part or all of the outer shape of the lid of the present invention, and preferably extends outside the container after the lid is bonded to the container.

<Hot spot>
Since the hot spot has no outer layer and is composed of only the inner layer, the hot spot has higher heat conductivity than other portions of the lid member having the outer layer and the inner layer. Therefore, when hot water is put inside the container, the post-insert material can be effectively heated by placing the post-insert material package on the hot spot. Moreover, it is preferable that an inner layer contains a material with high heat conductivity, for example, aluminum foil, at least at the location of a hot spot.

  Preferably, the hot spot has an opening for enhancing heat transfer from the inside of the container, particularly a circular, elliptical, polygonal hole, slit or the like. By having such an opening, it is possible to directly heat the post-insert material with steam from the hot water inside.

  If the opening is a hole, remove the hole due to the inner layer half cut together with the hot spot coating part when peeling the hot spot coating part by putting a half cut into the shape of the hole from the inner layer side. Thus, the opening can be exposed. Even when the opening is a slit, it can be formed by making a linear half-cut into the inner layer. Here, making a half cut in the inner layer means making a cut from the inner layer side to the depth of the inner layer and optionally to the depth of the easily peelable layer.

  The hot spot covering portion on the outer layer is preferably defined from the other outer layer by being half-cut from the outer layer side. Thereby, a hot spot coating | coated part can be peeled with the defined shape, and a hot spot can be exposed.

  The hot spot may be exposed by tearing the outer layer by being easily cutable (particularly, a straight-cut material) between the hot spot covering portion on the outer layer and the other region of the outer layer. In this case, in order to make it easy to tear the hot spot, it is preferable to have a tear guide portion at the tear start position between the hot spot coating portion and the other region of the outer layer. In this aspect, since it is not necessary to make a half cut in the outer layer, there is no circulation inside and outside the container from the gap of the half cut, which is preferable because the barrier property can be improved.

  The hot spot preferably has substantially the same area as one surface of the bag of the post-insert material so that the post-add material can be effectively heated. However, when a hot spot is exposed by using an easily cutable material (particularly, a straight cut material) between the hot spot covering portion and the other region of the outer layer, The area may change depending on the method of peeling.

  Moreover, in order to make it easy to peel a hot spot coating | coated part, you may provide the tab for hot spot expression in a hot spot coating | coated part. The hot spot expression tab is preferably present in a region where the lid member is peeled off when the lid member is peeled from the container to half. When the hot spot expression tab exists in the area where the lid member is peeled off, the tab portion can be easily picked by bending the lid member at the tab portion.

  Moreover, the tab for hot spot expression may comprise a part of external shape of a cover material. In this case, it is preferable that the hot spot expression tab extends to the outside of the container after the lid member is bonded to the container. Further, in the hot spot expression tab, it is preferable that the inner layer is separated by a half cut or the like on the outer side of the bonding portion between the lid material and the container so that only the hot spot covering portion is peeled off. When there is no such half cut and the inner layer is not separated, if the hot spot covering portion is peeled off from the hot spot exposing tab, the inner layer may also be peeled off.

  The lid member preferably has a display that allows the hot spot to be recognized as a place for heating the post-insert material. The indication that can be recognized as a place for warming the post-insert material may be a description on the cover material with letters, etc., and only the symbol display, color difference, unevenness etc. are present on the cover material. In addition, an additional description or the like may be written on the container, the packaging film, or the like.

The hot spot can be, for example, 20 cm ² or more, 25 cm ² or more, 30 cm ² or more, or 35 cm ² or more, and can be 100 cm ² or less, 80 cm ² or less, 60 cm ² or less, or 50 cm ² or less.

<Hot-cut hole>
Moreover, when the lid | cover material of this invention is used for the container for cup yakisoba, for example, you may have a hot water cutting hole.

  The hot water cutting hole may be formed by making a half cut from the inner layer side. When the peeling portion is peeled off, the hole formed by the inner layer half-cut is removed together with the outer layer, whereby the hot water cutting hole can be exposed.

  The hot water cut hole may be an opening of a hot spot. In this case, in particular, the lid member may have an indication that the hot spot can be recognized as a place for heating the post-inserting material. preferable.

  The hot water cutting hole may be present at a position different from the hot spot. In that case, it is preferable that the hot water hole is exposed by providing the lid member with a peeling portion from which the outer layer and the inner layer can be peeled, and peeling the peeling portion.

  It is preferable that this peeling portion constitutes a part of the outer shape of the lid member and has a peeling tab for serving as a knob. Moreover, it is preferable that the peeling tab is defined by separating the inner layer by a half cut or the like on the outer side of the bonding portion between the lid and the container so that only the peeling portion is peeled off. When the inner layer is not separated, if the peeled portion is peeled off from the peeling tab, the inner layer may also be peeled off.

The peeling portion can be, for example, 5 cm ² or more, 10 cm ² or more, or 15 cm ² or more, and can be 50 cm ² or less, 30 cm ² or less, or less than 20 cm ² .

<Layer structure-inner layer>
As the inner layer of the lid material of the present invention, a commercially available film, extruded resin, or the like can be used as appropriate. For example, if it is a film, you may use a thermoplastic resin film, for example, PET film, LDPE film, MDPE film, HDPE film, LLDPE film, PP film, Ny film, etc. individually or in combination. As long as it is an extruded resin, LDPE, MDPE, HDPE, LLDPE, PP, EVA, EMAA and the like may be used alone or in combination. The inner layer may include a resin layer other than the above, a paper layer, an adhesive layer, a metal foil layer such as an aluminum foil, an inorganic vapor deposition film layer, and the like. These films can be corona treated for the purpose of improving adhesion by modifying the surface or cleaning the surface.

  The inner layer preferably includes a metal foil, for example, an aluminum foil, in order to enhance heat transfer and barrier properties, and may further have a sealant on the side to be bonded to the container body. With the sealant, the lid material of the present invention can be heat sealed to the container body to be used. The material of the sealant is selected depending on the material such as the container to be sealed. For example, LDPE, LLDPE, PP, ethylene-methacrylic acid copolymer (EMAA), ethylene-acrylic acid copolymer (EAA), ionomer resin, ethylene-vinyl acetate. It may be a resin such as a copolymer. These resins can be provided in the form of, for example, a stretched or unstretched film, a molten resin for extrusion lamination, a coating material for hot melt, and the like.

  Particularly preferred sealants are easy peel sealants with easy peelability, such as sealants in which resins with different compositions are mixed to give a sea-island structure, and sealants that have multiple layers of sealant and become delaminated when opened. .

  The thickness of the inner layer can be, for example, 120 μm or less, 100 μm or less, 80 μm or less, or 60 μm or less, and can be 10 μm or more, 20 μm, or 30 μm or more.

<Layer structure-outer layer>
The lid material of the present invention may not be peelable from the inner layer in a part of the outer layer, but is preferably peelable from the inner layer in substantially the entire region of the outer layer.

  As the outer layer of the lid member, paper, thermoplastic resin film such as PET film, LDPE film, MDPE film, HDPE film, LLDPE film, PP film, nylon film and the like may be used alone or in combination. The outer layer may include a resin layer other than the above, a paper layer, an adhesive layer, a metal foil layer such as an aluminum foil, an inorganic vapor deposition film layer, and the like. Further, a printing layer may be included.

  In the embodiment in which the outer layer on the hot spot is easily cut, a part of the outer layer may not be easily cut, but preferably, substantially all the region of the outer layer is easily cut. . The easy cutability should just be easy cutability in the direction which peels a peeling part.

  The outer layer may be a single layer or a multilayer. In the embodiment in which the outer layer on the hot spot is easily cut, when the outer layer is a multilayer, at least one of the multilayers may not be easily cut. For example, even if at least one of the multilayers is not easy to cut, the other layers are easy to cut and the easy-cutting layer and the non-easy-cutting layer are bonded to each other. A layer that is not cut can also form a multi-layer that is easy to cut.

  Here, easy-cutting refers to a property that allows tearing by hand in at least one direction. For example, easy-cutting refers to a case where the tear strength is 10.0 N / mm or less, 8.0 N / mm or less, or 5.0 N / mm or less in at least one direction. Here, the tear strength is a sample size of 115 mm × 50 mm and a slit in the longitudinal direction of 45 mm, using a trouser tear method based on JIS K7128-1, using a trograph VES1D manufactured by Toyo Seiki Seisakusho Co., Ltd. The test speed is 200 mm / min, the distance between grips is 75 mm, and the measurement distance is 150 mm, which means the average value of three measurements.

  Moreover, it is preferable that easy-cut property is linear cut property. The linear cut property of a film refers to the property of a film that can be easily torn linearly due to the molecular orientation of the film, etc. For example, a stretched film, particularly a uniaxially stretched film, has a linear cut property, and thus is preferably used as a part of a laminate including at least the outer layer and the inner layer in a region where the outer layer on the hot spot is peeled off. . In the case of the linear cut property in the direction of peeling the outer layer on the hot spot, the outer layer on the hot spot can be cut out cleanly, and thereby the hot spot can be surely exposed.

  A film that does not have easy cutability and / or straight cut property can be cut to give easy cut property and / or straight cut property. For example, by cutting with a laser a structure in which a resin film sandwiches an aluminum layer, a cut can be made only in the resin film without damaging the aluminum layer. Moreover, a notch can also be made with only a part of the thickness of the resin film with a rotary cutter or the like. Furthermore, you may provide easy cut property by making a film contain a filler.

  Although it does not specifically limit as thickness of an outer layer, It is 20 micrometers or more, 30 micrometers or more, or 40 micrometers or more, and can be 120 micrometers or less, 100 micrometers or less, or 80 micrometers or less.

<Layer structure-Easy peelable layer>
Since the hot spot in the inner layer of the lid material of the present invention and the outer layer thereon need to be peelable from each other, an easily peelable layer may be provided between the peeled portion of the outer layer and the inner layer. Further, the easily peelable layer may be an easily peelable resin layer, a layer formed by applying a peeling varnish or the like on a portion where the peeling portion and the inner layer are peeled, or a combination of these. .

  The easily peelable layer may remain on the hot spot after the outer layer on the hot spot is peeled off. When an easily peelable resin layer is used as the easily peelable layer, if the easily peelable resin is present on the surface of the exposed hot spot, the easily peelable resin (for example, easily peelable having a softening point of 70 to 90 ° C. Resin) is softened by heating by pouring, and the adhesion strength increases with the package of the resin (especially polyolefin resin) placed on the hot spot, increasing the frictional resistance. Since it becomes difficult to slip, it is more preferable.

  The easily peelable resin used for the easily peelable resin layer is preferably a resin in which a cyclic olefin copolymer (COC) is mixed with polyolefin at a predetermined ratio.

  Examples of the polyolefin include polyethylene resin and polypropylene resin, and low density polyethylene (LDPE) is preferable.

  The MFR (melt flow rate) of polyolefin is 0.01 g / 10 min or more, 0.1 g / 10 min or more, when measured under the condition of temperature 190 ° C./load 2.16 kg in accordance with JIS K7210, or It may be 1.0 g / 10 min or more, and may be 60 g / 10 min or less, 20 g / 10 min or less, or 10 g / 10 min or less.

The density of the polyolefin may be 0.89 g / cm ³ or more, and the density may be 0.94 g / cm ³ or less.

  The cyclic olefin copolymer (COC) is a so-called Ziegler catalyst, metallocene, which is obtained by converting an α-olefin and a cyclic olefin into hydrocarbon solvents such as hexane, heptane, octane, cyclohexane, benzene, toluene, and xylene. It refers to a copolymer that can be obtained by preparing a catalyst such as a catalyst.

  The COC MFR is in accordance with JIS K7210, measured at a temperature of 190 ° C./load of 2.16 kg, 0.1 g / 10 min or more, 1.0 g / 10 min or more, or 2.0 g / 10 The MFR may be 40 g / 10 min or less, 20 g / 10 min or less, or 10 g / 10 min or less when measured under the condition of temperature 190 ° C./load 2.16 kg. It's okay.

  The easily peelable resin layer can adjust the interfacial peel strength by changing the mixing ratio of LDPE and COC. The content of COC in the easily peelable resin may be 1% by mass or more, or 3% by mass or more, and the content may be 24% by mass or less or 10% by mass or less. If it is such a range, content of COC is preferable because the interfacial peeling between the inner layer or the outer layer (peeling portion) and the easily peelable resin layer becomes easy and the peel strength of both can be easily controlled.

  The thickness of the easily peelable resin layer may be, for example, 10 μm or more or 15 μm or more, and may be 40 μm or less or 25 μm or less in order to achieve both adhesiveness and peelability with the layer to be peeled.

  The easily peelable layer may be a mixture of a nitrocellulose resin and a urethane resin, an amino alkyd resin, a polyamide resin and / or a polyester resin, an aqueous varnish, an oil varnish, an ultraviolet curable varnish, or the like. Good.

  More preferably, the release varnish is a mixture of at least one of the resins listed above and a wax. The wax content in the mixture may be about 20% or more, or about 30% or more, and about 85% or less, or about 80% or less, based on the weight of the mixture. .

  When the content of the wax is about 20% by mass or more, picking of another layer adjacent to the release varnish layer can be prevented, and when the content is about 85% by mass or less, the release varnish is preferable. It is preferable because delamination of layers can be prevented.

<Layer structure-other>
In addition to the inner layer, the outer layer, and the easily peelable layer, the lid material of the present invention includes a printed layer, an anchor coat layer for enhancing adhesion between the two layers, a primer layer, etc. May further be included.

<Specific embodiment>
Hereinafter, although the present invention is illustrated with reference to drawings, the present invention is not limited to these.

  Fig.1 (a) has illustrated the lid | cover material of this invention which is a lid | cover for cup fried noodles. The lid material (10) of the present invention has an unsealing tab (10 ') for unsealing the lid material, which can be used to peel off the lid material to about half and put hot water into it. After discarding, all the lid material can be finally peeled off from here.

  The lid member (10) has a hot spot coating part (1), and the hot spot coating part (1) has a hot spot expression tab (1 '). Since the hot spot expression tab (1 ′) is present in the area where the lid member (10) is peeled off to about half, the lid member (10) is bent by the hot spot expression tab (1 ′). Thus, the tab (1 ′) can be easily picked.

  Peeling of the hot spot covering part (1) is usually carried out after peeling the cover material (10) to about half and pouring hot water, but when the cover material (10) is half peeled, the hot spot is exposed. It becomes easy to pinch the tab (1 '). Here, the outer layer on the hot spot is half-cut to define the hot spot covering portion (1), and the hot spot is provided with the opening (1a) by half-cut from the inner layer side. .

  Moreover, this lid | cover material (10) has a peeling part (2), and by peeling this from peeling tab (2 '), the hot-water hole provided by the half cut from an inner layer side ( 2a) can be expressed. This peeling tab (2 ') is demarcated by a half-cut line (2b) from the inner layer side at a position outside the location where the lid (10) adheres to the container. Thereby, only the peeling part (2) can be easily peeled using the peeling tab (2 ').

  FIG. 1 (b) shows a state in which hot water is put into a container body containing dry noodles, and then a package (30) of the post-insert material is placed in the hot spot (1) and the post-add material is heated. Show.

  Fig. 1 (c) shows that after several minutes have passed since hot water was poured, the peeling portion (2) is peeled off from the peeling tab (2 '), and a hot water cutting hole (2a) for throwing out hot water is exposed. It shows the state. Since the peeling tab (2 ′) is defined by a half-cut line (2b) from the inner layer side at a position outside the portion where the lid (10) adheres to the container body (20), the peeling tab (2 ′) ) Can be used to easily peel the peeling portion (2).

  2 (a) to 2 (f) show various embodiments of the lid of the present invention. 2 (a) to 2 (c) show a lid material having a hot water cutting hole, for example, used as a lid material for cup fried noodles, and FIGS. 2 (d) to 2 (f) are lid materials for cup ramen, for example. The lid | cover material without a hot-water hole used as is shown.

  2 (a) and 2 (b) show an embodiment in which the opening portion of the hot spot is changed to a slit and a round hole, respectively, from the lid member of FIG. 1 (a). FIG.2 (c) has shown the embodiment by which the opening part of a hot spot is used also as a hot water cutting hole as it is. In this aspect, the hot spot covering portion and the peeling portion covering the hot water cutting hole are common.

  FIG.2 (d) has shown the cover material which changed the cover material of Fig.1 (a) into cup ramen. Similar to FIG. 1 (a), in the lid material of FIG. 2 (d), the hot spot expression tab (1 ′) is present in a region where the lid material is peeled off when the lid material is peeled halfway from the container. ing.

  FIG. 2 (e) illustrates an embodiment in which the hot spot expression tab (1 ') constitutes a part of the outer shape of the lid member. In this case, the hot spot expression tab (1 ′) is defined by the half-cut line (1b) from the inner layer side at a position outside the location where the lid material adheres to the container body. The hot spot can be easily exposed from the tab (1 ′).

  FIG.2 (f) has illustrated the embodiment of the lid | cover material which can expose a hot spot, without using a half cut for an outer layer. In this embodiment, since the hot spot covering portion (1) of the outer layer is easily cutable with other outer layer portions, the hot spot expression tab (1 ′) is placed in the direction of the arrow in the drawing. When pulled, the hot spot covering portion (1) can be easily torn. In particular, when the easy-cutting portion is straight-cutting, it is preferable because the expected tear line (1c) of the hot spot coating portion becomes clear to a certain extent.

  In this embodiment, a tear guide portion (1 ″) that is a cut into the outer layer is present at the tear start position of the hot spot coating portion so that the hot spot coating portion (1) can be easily cut. Also here, the hot spot display tab (1 ′) is defined by the half-cut line (1b) from the inner layer side at the position outside the location where the lid material adheres to the container body. A hot spot can be easily exposed from the outgoing tab (1 ′).

  FIG. 3 illustrates the display of the lid of the present invention. As shown in this figure, the cover material of the present invention may be made clear to the user by using the numbers in the order of opening and peeling, or by adding a description.

  FIG. 4 shows an example of a laminated structure of the lid material used in the present invention. The outer layer (410) includes a printing layer (401) made of ink and OP varnish, a paper layer (402) below the printing layer, an adhesive layer (403) for bonding the paper and PET, and an outer layer side PET layer (404). including. The inner layer (420) includes a sealant layer (409), an aluminum layer (408), an adhesive layer (407) for bonding aluminum and PET, and an inner layer side PET layer (406) as the outermost layer. Furthermore, this original fabric includes an easily peelable layer (405) between the outer layer and the inner layer.

  In this case, the outer layer of the original fabric is manufactured through a process of printing on the paper layer using OP varnish and ink, and a process of applying an adhesive and dry laminating the paper and the PET layer. Then, this outer layer and a part of the inner layer that has undergone the dry laminating process of the PET layer and the aluminum layer are sandwiched with an easily peelable resin and subjected to extrusion sand lamination. Next, the sealant resin is laminated on the outermost layer on the inner layer side by extrusion back lamination.

<Container with lid>
The container with a lid material of the present invention has a container body and the lid material described above. The container with lid may or may not have contents.

<Container body>
The container body may have a flange portion that adheres to the lid. Preferably, the container body used in the present invention can be sealed by a lid material and heat sealing.

<Application>
The container with a lid material of the present invention is not particularly limited as long as it is useful contents due to the presence of a hot spot, but in particular, a lid for instant noodles such as cup ramen using cups and cup fried noodles. It can be suitably used as a container with a material, a container with a lid for cup soup, and the like.

  The present invention will be described more specifically with reference to the following examples, but is not limited thereto.

<< Production Example 1 of Raw Material >>
Fabricate the following layer structure:

<Outer layer>
- Paper layer: Coated paper (basis weight: 80g ^{/ m} 2);
-Adhesive layer: Two-component curable urethane-based dry laminate adhesive (application amount dry 2.5 g / m ² or more);
-Outer layer side PET layer: PET film: (thickness: 12 μm);

<Easily peelable layer>
-Easily peelable resin layer: a mixture of 95% by mass of LDPE and 5% by mass of COC (thickness: 20 μm);

<Inner layer>
-Inner layer side PET layer: PET film (thickness: 8 μm);
-Adhesive layer: Two-component curable urethane-based dry laminate adhesive (application amount dry 2.5 g / m ² or more);
-Aluminum layer: Aluminum foil made of soft aluminum (thickness: 6.5 μm)
-Sealant layer: Easy peel sealant (20 μm).

  The dry laminate adhesive is set to the above coating amount, and the paper layer and the outer layer side PET layer are bonded using a dry laminator to obtain the member A.

  The dry laminate adhesive is set to the above coating amount, and the aluminum layer and the inner layer side PET layer are bonded using a dry laminator to obtain member B.

  Using an extrusion laminator, an easily peelable resin is extruded between the PET layer side of member A and the PET layer of member B at a temperature of about 320 ° C. to about 340 ° C., sandwich lamination is performed, and member C is obtain.

  Using an extrusion laminator, the sealant resin is extruded onto the aluminum layer side of the member C at a temperature of about 240 ° C., and back-laminated to obtain the original fabric.

<< Example 2 of Fabric Production >>
After the step of obtaining member A in Production Example 1, a gravure printing machine is used, and a release agent containing silicone resin and cellulose resin as main components and ethyl acetate as a solvent is formed on the outer layer side PET layer side of member A. Applied. The other steps were the same as in Production Example 1 to obtain a raw material having the following layer structure:

<Outer layer>
- Paper layer: Coated paper (basis weight: 80g ^{/ m} 2);
-Adhesive layer: Two-component curable urethane-based dry laminate adhesive (application amount dry 2.5 g / m ² or more);
-Outer layer side PET layer: PET film (thickness: 12 μm);

<Easily peelable layer>
-Release agent printing layer: Release agent mainly composed of silicone resin and cellulose resin-Easy release resin layer: Mixture of 95% by mass of LDPE and 5% by mass of COC (thickness: 20 μm);

<Inner layer>
-Inner layer side PET layer: PET film (thickness: 8 μm);
-Adhesive layer: Two-component curable urethane-based dry laminate adhesive (application amount dry 2.5 g / m ² or more);
-Aluminum layer: Aluminum foil made of soft aluminum (thickness: 6.5 μm)
-Sealant layer: Easy peel sealant (20 μm).

<< Manufacture Example 3 of Raw Material >>
Prior to the step of obtaining member B in Production Example 1, a gravure printing machine was used on the side where the aluminum layer of the inner layer side PET layer was not bonded, and a release agent mainly composed of a silicone resin and a cellulose resin was applied. . The other steps were the same as in Production Example 1 to obtain a raw material having the following layer structure:

<Outer layer>
-Paper layer: coated paper (basis weight: 80 g / m ² , thickness: 80 μm);
-Adhesive layer: Two-component curable urethane-based dry laminate adhesive (application amount dry 2.5 g / m ² or more);
-Outer layer side PET layer: PET film (thickness: 12 μm);

<Easily peelable layer>
-Easily peelable resin layer: a mixture of 95% by mass of LDPE and 5% by mass of COC (thickness: 20 μm);
-Release agent printing layer: Release agent mainly composed of silicone resin and cellulose resin

<Inner layer>
-Inner layer side PET layer: PET film (thickness: 8 μm);
-Adhesive layer: two-component curable urethane-based dry laminate adhesive application amount dry 2.5 g / m ² or more);
-Aluminum layer: Aluminum foil made of soft aluminum (thickness: 6.5 μm)
-Sealant layer: Easy peel sealant (20 μm).

<< Manufacturing example of cover material >>
After preparing the above laminate raw fabrics 1-3 and putting a half-cut for the hot spot coating part at a depth from the outer layer side of the laminate to the easily peelable resin layer with a rotary die cutter, from the inner layer side The back half cut of the hole shape and the slit shape was put in the depth to the easily peelable resin layer. Then, the outer periphery of the lid was fully cut to obtain a lid material.

<Checking the hot spot effect>
The hot spot effect was confirmed using the cover material produced from said laminated raw material (manufacture example 1). Here, the cover material of Example 1 in which the hot spot coating part is peeled off and no opening exists in the hot spot; Example 2 in which the hot spot coating part is peeled off and the hot spot has a hole-shaped opening part The lid material of Example 3 in which the hot spot covering portion was peeled off and the slit-like opening was present in the hot spot; and the lid material of Comparative Example 1 in which no hot spot was provided were used.

  Put about 100 ° C hot water in a container, put about 10g of water with an initial temperature of about 20 ° C filled in a sachet on a hot spot or lid, and how many times the internal temperature will become after 3 minutes. It was measured. These evaluations were performed three times for each lid. The results are shown in Table 1.

  As is clear from these results, a substantial heating effect can be recognized in the cover material using a hot spot.

DESCRIPTION OF SYMBOLS 1 Hot spot coating | cover part 1 'Hot spot expression tab 1''Tear guide part 1a Opening part 1b Inner layer half cut for hot spot demarcation 1c Line to cut of a linear cut property hot spot coating part 2 Peeling part 2' Peeling tab 2a Hot water cutting hole 2b Inner layer half cut for debonding delimiter 10 Lid 10 'Opening tab 20 Container body 30 Post-packaging package 401 Print layer 402 Paper layer 403 Adhesive layer between paper and PET 404 Outer layer side PET layer 405 Easy peelable layer 406 Inner layer side PET layer 407 Adhesive layer of aluminum and PET 408 Aluminum layer 409 Sealant layer 410 Outer layer 420 Inner layer

Claims (10)

A lid having inner and outer layers, by peeling off the hot spot coverage of the outer layer from the inner layer, exposed hot spots for heating the last-material, the hot spot covering portion, the outer layer A lid with a hot spot that is demarcated from other outer layers by being half-cut from the side .   The lid | cover material of Claim 1 which has an opening part in the said hot spot.   The lid according to claim 2, wherein the opening is also used as a hot water cutting hole. A lid material having an inner layer and an outer layer, wherein a hot spot for heating a post-insert material is exposed by peeling a part of the outer layer from the inner layer, The lid | cover material which has a peeling part which the said outer layer and the said inner layer can peel further in the position different from a hot spot, and a hot-water hole appears by peeling the said peeling part. A lid material having an inner layer and an outer layer, wherein a hot spot for heating a post-insert material is exposed by peeling a part of the outer layer from the inner layer, A lid member having a display that can be recognized as a hot spot or a place for warming the post-insert material on the outer layer. A lid material having an inner layer and an outer layer, wherein a hot spot for warming a post-insert material is exposed by peeling a part of the outer layer from the inner layer. A lid member in which a resin in which a cyclic olefin copolymer is mixed with polyolefin is present on the surface of the hot spot.   The lid | cover material as described in any one of Claims 1-6 in which the said inner layer has heat-sealability. A lid material having an inner layer and an outer layer, wherein a hot spot for heating a post-insert material is exposed by peeling a part of the outer layer from the inner layer, A lid opening tab and a hotspot display tab constituting a part of the outer shape of the lid, and the lid is half-cut from a container to which the lid is bonded using the lid opening tab. The cover material in which the tab for hot spot expression exists in the area | region where the cover material peels when it peels.   The container with a lid | cover material which has a lid | cover material as described in any one of the container main body and the said container main body.   The container with a lid | cover material of Claim 9 which accommodates instant noodles and the post-insert material.

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