JP4644931B2 - Lid material with hot water draining function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a container lid used for sealed packaging of instant foods such as fried noodles, and in particular, with a hot water cut-off function provided with a hot water cut-out opening for discharging hot water to be poured to soften instant foods. The lid material.
[0002]
[Prior art]
As shown in the side sectional view of FIG. 7, for example, a conventional lid material with a hot water cutting function such as an instant food container is formed of an aluminum foil on the back surface of a top sheet (20) having a piercing hole (77). 19) and sealant layer (16) are laminated, but with this lid material, the hole for puncture (77) is torn unexpectedly during transportation, etc., and when severing, use chopsticks etc. The aluminum foil (19) and the sealant layer (16) must be pierced from the hole (77), so that chopsticks are required and the size and shape of the broken opening are not constant, so There was a problem that it could not be cut and there was a risk that the broken residue might be mixed into food.
[0003]
As a lid material that has been recently developed to solve these problems, for example, peelable with a hot-water cut-off container for sealing and packaging instant food as shown in the side sectional view of FIG. 8 (a) and the plan view of FIG. 8 (b). There is a lid (3). The surface sheet (20) is the outer surface side, and the inner surface side (food side) is a composite sheet (10) (from the inner surface, for example, a sealant layer (16) / aluminum foil (19) / adhesive resin layer (15). And a laminated inner surface of the composite sheet (10) and the surface sheet (20) in a partial region from the outer peripheral arc portion of the lid to the inside thereof. Is provided with an easy-peeling region (L1) by an easy-peeling layer (30) formed by applying an easy-peeling agent (peeling varnish), and the other composite sheet (10) and surface sheet (20) Is provided with a bonded region (L2) in a bonded state.
[0004]
Then, a hot water cut forming half cut (50) having a hot water cut hole shape having an inner diameter R is formed at one or several places on the composite sheet (10) in the easy peeling region (L1). The inner surface of the composite sheet (10) and the top sheet (20) in the half-cut (50) region is provided with an adhesive part (60) in the half-cut region having an inner diameter r (a portion where the easy peeling layer (30) is not formed). Therefore, the composite sheet (10) and the top sheet (20) are bonded to each other in the half cut region adhesive portion (60).
[0005]
As shown in the side cross-sectional view of FIG. 9, the peelable lid member (3) of the instant food container having the structure as described above has an open flange portion at the upper end of the container (2) containing the instant food. (21) An instant food container in which instant food is hermetically sealed by adhesively sealing and packaging the container (2).
[0006]
The container (2) in which the instant food is hermetically packaged as described above is pulled up the opening pull tab (12) on the outer periphery of the lid on the adhesive region (L2) side shown in FIG. ) Of the composite sheet (10) on the adhesive region (L2) side is partially peeled off from the flange part (21) and opened, and hot water is injected from the opening, and then the pull pull tab (12) on the outer periphery of the lid member The lid is folded again to the outside of the flange portion (21) and left for a few minutes to loosen the instant food (not shown) in the container (2) softly.
[0007]
Thereafter, the pull tab (12) for opening the hot water cutout on the outer periphery of the easy peeling region (L1) shown in FIG. 8 (b) is pulled up, and as shown in the side sectional view of FIG. 10, the easy peeling region (L1) While peeling off the surface sheet (20) from the composite sheet (10), the composite sheet (10) in the region of the half-cut (50) for hot water cut opening adhering to the surface sheet (20) is cut off, and the composite sheet ( After the hot water cut opening (70) having a stable inner diameter R is formed in 10), the container (2) can be tilted to discharge the hot water contained therein from the hot water cut opening (70).
[0008]
Further, as shown in the perspective view of FIG. 11, for example, a perforation (22) is applied to the boundary line between the easy peeling region (L1) and the adhesion region (L2) from the surface of the surface sheet, and is slightly easier than the perforation (22). There is a peelable lid member (3) with a hot water cut opening in which a hot water cut opening opening pull tab (13) is formed on the peripheral edge on the peeling region (L1) side, and the opening of the hot water cut opening (70) in this case is a pull tab for the hot water cut opening. While pulling up (13) and tearing the perforations (22) in order along the perforations (22), the topsheet (20) in the easy peel region (L1) is peeled from the composite sheet (10), After separating the composite sheet (10) in the hot-cut forming half-cut region adhered to the top sheet (20) and forming the hot-cut opening (70) in the composite sheet (10), the container (2) is tilted. The hot water inside Some of which are enabled to be discharged from the mouth (70).
[0009]
[Problems to be solved by the invention]
However, in the conventional peelable lid member (3) with a hot water cut end, the non-easy-peeling portion of the inner diameter r, that is, the formation of the non-coating portion with the easy-peeling agent, that is, the pattern, For the complexity of formation, the processing accuracy management of applying a half-cut (50) for hot water cutting with an inner diameter R so as to cover this non-application part, that is, the adhesive part (60), and further the management of the peelability of the easy release agent There is a problem that the manufacturing cost increases as a result.
[0010]
The present invention solves the problems of the prior art, and the object is to cover a lid for exposing a hot water outlet in a lid of a container such as instant food that requires hot water. There is no difficulty in forming the non-peeled part, easy peel layer peelability and half cut position accuracy as before, and it is simple and easy to manage production. It is to provide a lid material with a hot water draining function.
[0011]
[Means for Solving the Problems]
In order to achieve the above object in the present invention, according to the invention of claim 1, the back surface is a lid member sealed to the flange portion of the container body, is substantially the same outer shape as the flange portion, and is a pull tab for opening at the outer peripheral edge. In the lid member with a hot water cut-off function having a layer structure in which a sealant layer is laminated on the back surface of a base material having at least a paper layer, the opening pull tab is continuously provided from the surface of the base material. A perforation or a crease is given to the boundary line between the non-peeling area and the peeling area where the pull tab for opening the hot water cutout is connected, and one piece from the sealant layer in the peeling area to the middle of the paper layer constituting the substrate Or a plurality of half-cuts for forming a hot water cut opening are formed, and the pull tab for opening the hot water cut opening is pulled up to delaminate from substantially the middle of the paper layer constituting the base material of the peeling area. Glue to The water cut for forming the half-cut substrate region, disconnecting a layer formed with a sealant layer, a substrate having the remaining paper layers being delaminated, characterized in that so as to form a water cut made with a sealant layer that It is made into the lid material with a hot water cutting function.
[0012]
According to the first aspect of the present invention, the structure of the lid member with a hot water cut-off function is basically a simple structure consisting of a paper layer and a sealant layer. There is no need for an easy peeling layer, and there is no difficulty in forming a patterned non-peeling part, managing the peelability of the easy peeling layer, and managing the position accuracy of half-cuts, and production management is easy. It is possible to provide a lid material with a hot water cut-off function that does not bulk up. In addition, since an easy peeling layer is not required, the lid material contributes to a reduction in material cost.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The lid material with a hot water cutting function of the present invention is a lid material whose back surface is sealed to the flange portion of the container body, and has substantially the same outer shape as the flange portion, for example, as shown in the plan view of FIG. There are a pull tab (12) for opening and a pull tab (13) for opening a hot water cut opening on the outer peripheral edge, and a non-peeling area (M2) and a pull tab (13) for opening a hot water cut opening where the pull pull tab (12) is provided continuously. A crease (24) is applied to the boundary line of the continuous peeling region (M1), and the layer structure is, for example, as shown in the side sectional view of FIG. 1, from the surface to the paper layer (14), the adhesive resin layer ( 15) A structure in which an aluminum foil (19) is used as a base material (11), and a sealant layer (16) is laminated on the back surface, that is, the content side, and the base material starts from the sealant layer (16) in the peeling region (M1). A plurality of sheets up to approximately the middle of the paper layer (14) constituting the material (11) A hot water cutting function with a lid member (1) which cut forming the half-cut (50) is engraved.
[0014]
As shown in the side cross-sectional view of FIG. 3, the lid material with hot water cutting function (1) is opened by pulling up a pull tab (not shown) on the outer periphery of the lid material on the non-peeling region (M2) side. Then, the sealant layer (16) on the non-peeling region (M2) side is partially peeled off from the flange portion (21) of the container (2) and opened, and hot water is injected from the opening, and then opened on the outer periphery of the lid material. The pull tab is applied again so as to be folded outside the flange portion (21) and left for a few minutes to loosen the instant food (not shown) in the container (2) softly.
[0015]
Thereafter, the pull tab (12) for opening the hot water cutout on the outer periphery of the peeling area (M1) shown in FIG. 2 is pulled up, and the paper constituting the base material (11) of the peeling area (M1) as shown in FIG. Adhesive resin layer (15) in the half cut (50) region for hot water cut opening that adheres to the paper layer (14), aluminum foil (19), delamination from substantially the middle of the layer (14), The layer made of the sealant layer (16) is cut off and the delaminated paper layer (14), the adhesive resin layer (15), the aluminum foil (19), and the stable size hot water made of the sealant layer (16) are separated. After the cut end (70) is formed, the container (2) is tilted so that the hot water inside can be discharged from the hot cut end (70).
[0016]
Moreover, as another form of the lid member with a hot water cut-off function of the present invention, for example, as shown in the plan view of FIG. 4, a pull tab (12) for opening and a pull tab (13) for opening a hot water cut-out opening are formed on a circular outer periphery. And a perforation line (22) from the surface to the boundary line between the non-peeling region (M2) where the opening pull tab (12) is continuously provided and the peeling region (M1) where the pull tab (13) for hot water outlet opening is continuous. ), And the lid material (1) with a hot water cutting function in which the pull tab (13) for opening of the hot water outlet is provided on the side of the peeling region (M1) slightly from the perforation (22).
[0017]
As shown in the plan view of FIG. 4, the unsealed lid member (1) with the hot water cutting function of the other form is pulled up by pulling the pull pull tab (12) on the outer periphery of the lid member on the non-peeling region (M2) side. Then, as shown in the perspective view of FIG. 5, the sealant layer (not shown) on the non-peeling region (M2) side is partially peeled off from the flange portion (21) of the container (2) and opened. After pouring more hot water, cover the opening pull tab on the outer periphery of the lid so that it is folded again outside the flange (21), leave it for a few minutes and leave it in the container (2) for instant food (Figure Loosen (not shown) softly.
[0018]
Thereafter, as shown in FIG. 5, the pull tab (13) for opening the hot water outlet on the outer periphery of the peeling area (M1) is pulled up, and the perforation (22) is broken in order along the perforation (22). Adhesiveness in the half cut (50) region for forming a hot water cut opening that is peeled from the middle of the paper layer (14) constituting the base material of the peeling region (M1) and adhered to the paper layer (14) A layer composed of a resin layer, an aluminum foil, and a sealant layer (16) is cut off, and the adhesive resin layer, the aluminum foil, and the sealant layer that have a paper layer (14) left after delamination as a surface have a stable size. After the hot water cut opening (70) is formed by drilling, the container (2) can be tilted to discharge the hot water contained therein from the hot water cut opening (70).
[0019]
As described above, the lid material (1) with a hot water cut-off function of the present invention does not require an easy peeling layer (30) like the conventional peelable lid material (3) shown in FIG. The production management is easy, i.e., the production cost is high, because there is no complexity such as the formation of the easily peelable layer (30), the management of the peelability, and the position accuracy of the half-cut (50) for forming the hot water cut end. It is possible to provide a lid material with a hot water draining function.
[0020]
Also, as shown in FIG. 3, for example, when the hot water cutout (70) is opened, the remaining base material (11) and sealant layer ( 16), the laminate of the release region (M1) is required to have a strength that can withstand the weight of the contents during hot water cutting, but the paper layer (14) left after delamination is the adhesive resin layer (15 ), For example, the thickness of the aluminum foil (19) laminated to impart light-shielding properties, barrier properties, and dead hold properties (properties that can maintain the peeled state) is 2 Since the thickness can be reduced by about 5 μm, it is possible to provide a lid material (1) with a hot water cutting function that contributes to the reduction of the material cost together with the easy peeling agent for forming the easy peeling layer.
[0021]
As shown in the schematic side sectional view of FIG. 6 (a), the layer structure of the lid member (1) with a hot water cutting function of the present invention is basically a paper layer (14) as a base material (11). A sealant layer (16) is laminated on the back surface. The engraving of the half cut (50) for forming the hot water cut opening at this time is from the sealant layer (16) side to approximately the middle of the paper layer (14). Further, as shown in FIG. Hot water cutting function in which a sealant layer (16) is laminated on the back surface of a base material (11) obtained by laminating an aluminum foil (19) that imparts light shielding properties and dead hold properties to (14) with an adhesive resin layer (15) There is a cover material (1). In this case, the half cut (50) for forming the hot water cut end is formed from the sealant layer (16) side to the middle of the paper layer (14) through the aluminum foil (19) and the adhesive resin layer (15). It is. 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 polyvinylden film is laminated on the back surface. There is a lid material (1) having a hot water cutting function in which a sealant layer (16) is laminated on the surface of the barrier layer (18) as a base material (11). The arrangement is from the sealant layer (16) side to the middle of the paper layer (14) through the barrier layer (18) and does not participate in the protective layer (17) on the surface.
[0022]
The material etc. which are used for the lid | cover material (1) with a hot water cutting function of this invention below are demonstrated.
First, as the paper layer (14) of the base material (11) constituting the lid member (1) with a hot water cutting function of the present invention, those having at least a white surface and suitable for multicolor printing are preferable. Both art paper of about m ^{2 to} 135 g / m ² , single art paper, double coated paper, single coated paper, and the like can be suitably used.
[0023]
Moreover, as a sealant layer (16) which comprises the lid material (1) with a hot water cutting function of this invention, for example, the linear low density polyethylene (LLDPE), low density polyethylene (LDPE), and high density polyethylene which are excellent in heat-sealability. (HDPE), polyolefin resin such as unstretched polypropylene (CPP), or ethylene such as ethylene / vinyl acetate copolymer (EVA), ethylene / acrylic acid copolymer (EAA), ethylene / methacrylic acid copolymer (EMAA) A film of a copolymer resin is preferably used, and further, an incompatible component of the polyolefin resin, such as polystyrene or polybudene, may be mixed with the polyolefin resin. Further, a hot melt adhesive made of ethylene / vinyl acetate copolymer resin, ethylene / acrylic acid copolymer resin or the like may be provided at a coating amount of about 15 to 25 g / m ² , and the container (2 ) Can be sufficiently sealed with the flange portion (21) and can be peeled open.
[0024]
Further, in consideration of storage stability such as light shielding for foods and gas barriers, it is common to laminate an aluminum foil (19) on the substrate (11), and this aluminum foil (19) is particularly suitable for the present invention. When a part of the lid material with a hot water cut-off function (1) is opened and peeled off and poured into hot water, it has a property of holding the state in which the lid material is peeled off (referred to as dead hold property). Is preferably used because it can be poured safely and reliably.
[0025]
The adhesive resin layer (15) for bonding the aluminum foil (19) to the paper layer (14) is, for example, polyethylene resin, ionomer resin, polypropylene resin, etc. by hot melt extrusion in consideration of the productivity of the lid material. Is preferably used, but is not limited thereto.
[0026]
The lid material (1) with a hot water cutting function of the present invention as described above is suitably used as a lid material for containers such as instant yakisoba and instant raw noodles that are softly loosened by pouring hot water and then drained. Is.
[0027]
【The invention's effect】
Since this invention is the above structure, there exist the following effects.
That is, the back surface is a lid member that is sealed to the flange portion of the container body, has an opening pull tab and a hot water outlet opening pull tab on the outer peripheral edge, and a sealant layer is laminated on the back surface of the substrate having at least a paper layer. In a lid member with a hot water cutting function having a layer structure, a perforation or a crease is given to the boundary line between the non-peeling region where the opening pull tab is continuously provided from the surface of the base material and the peeling region where the pull tab for hot water opening is continuously provided. And one or a plurality of half-cut forming half cuts are engraved from the sealant layer in the peeling area to the middle of the paper layer constituting the base material. Since the structure is basically a simple structure consisting of a paper layer and a sealant layer, it does not require an easy-release layer like a conventional lid with a hot-water cut-off, and therefore has a patterned non-peeling portion. Formation and peeling of easy release 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.
[0028]
In addition, when the hot water cut opening is opened, delamination is performed from approximately the middle of the paper layer of the peeling area, and the laminate of the peeling area consisting of the remaining base material and the sealant layer can withstand the weight of the contents during hot water cutting. Although strength is required, the paper layer left after delamination is laminated via the adhesive resin layer, so the thickness of the aluminum foil laminated to give light shielding properties and dead hold properties, for example, is conventionally increased. Since it can be made thin, it is possible to provide a lid member with a hot water draining function that contributes to a reduction in material cost, in addition to the fact that a conventional easy release agent for forming an easy release layer becomes unnecessary.
[0029]
Therefore, the present invention exhibits an excellent practical effect as a lid material having a hot water cutting function for a container that is poured into hot water such as instant yakisoba or instant raw noodles and softly loosened and then drained.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory diagram showing, in a side cross-section, an embodiment of a lid member with a hot water cutting function of the present invention.
FIG. 2 is an explanatory view showing a plan view of an embodiment of a lid member with a hot water cutting function of the present invention.
FIG. 3 is an explanatory view showing a cross-sectional side view of an embodiment in which a hot water cut opening of the lid member with a hot water cutting function of the present invention is opened.
FIG. 4 is a plan view for explaining another embodiment of the lid member with a hot water cutting function of the present invention.
FIG. 5 is a perspective view for explaining another embodiment in which a hot water cut opening of the lid member with a hot water cutting function of the present invention is opened.
FIG. 6 illustrates the layer structure of the lid member with a hot water cutting function of the present invention,
(A) is a side sectional view of the case,
(B) is a side sectional view of another example,
(C) is a side sectional view of still another example.
FIG. 7 is a side sectional view for explaining an example of a conventional lid member with a hot water outlet.
FIG. 8 illustrates an example of a conventional peelable lid member with a hot water cutout,
(A) is the sectional side view,
(B) is a plan view thereof.
FIG. 9 is a side cross-sectional view illustrating an example in which a conventional lid with a hot water cut opening is integrated with a container.
FIG. 10 is an example of a side cross-sectional view in which a top sheet of a peelable lid member with a hot water cut opening is peeled to form a hot water cut opening.
FIG. 11 is another example of a side cross-sectional view in which a top sheet of a peelable lid member with a hot water cut opening is peeled to form a hot water cut opening.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lid with hot water cutting function 2 ... Container 3 ... Releasable lid material 10 with hot water cut opening ... Composite sheet 11 ... Base material 12 ... Opening pull tab 13 ... Hot water opening opening pull tab 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 ... crease 30 ... Easily peelable layer 50 ... Hot cut forming half cut 60 ... Adhesive part 70 in half cut area ... Hot cut edge 77 ... Puncture hole L1 ... Easy peel area L2 ... Adhesive area M1 ... Peel area M2 ································································································

Claims (1)

The lid is sealed to the flange part of the container main body, has the same outer shape as the flange part, has an opening pull tab and a hot water outlet opening pull tab on the outer peripheral edge, and has at least a paper layer on the back surface of the substrate. In the lid member with a hot water cutting function having a layer structure in which a sealant layer is laminated, the boundary line between the non-peeling region where the opening pull tab is continuously provided from the surface of the base material and the peeling region where the hot water opening opening pull tab is continuously provided is provided. perforations or folding ruling is applied, and a substantially intermediate to one or a plurality of water cut for forming the half-cut is engraved sheet layer constituting the base material from the sealant layer of the release area, the melt-cut Pulling up the pull tab for opening, delaminating from substantially the middle of the paper layer constituting the base material of the peeling area, and adhering to the paper layer, the base material and the sealant layer in the hot cut forming half-cut area It becomes disconnected layer, a substrate having the remaining paper layers being delaminated, water cutting function with lid being characterized in that so as to form a water cut made with a sealant layer.

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