JP2007314227A - Lid material with hot water draining function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid material with a hot water draining function for an instant food container composed of a laminate of a front sheet and a rear sheet, wherein a releasing agent layer for peeling both sheets is easy to be formed in manufacturing the lid material and management control for forming a hot water draining port is easy (reduced in the risk of the formation of a defective product). <P>SOLUTION: The lid material 1 with a hot water draining function is so constituted that the rear face of a PET film 18 is formed of a sealant layer 16, the front face of the rear sheet 10 whose rear face is sealed with a flange 21 of a container body 2 is stacked on the rear face of the front sheet having the rear face of a paper layer 40 formed of aluminum foil 17 via a pseudo-adhesive layer 14, an opening pull tab 13 is provided along an outer periphery, a front sheet peeling pull tab 12 is provided along an outer periphery opposite to the tab 13, and numerous small holes 52 for draining hot water with diameters ranging from 1 to 5 mm are formed entirely on the rear sheet 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lid for a container for instant food used for sealed packaging of instant foods such as fried noodles, and in particular, a hot water cut-off function provided with a hot water cut-off outlet for discharging hot water to be poured to soften the instant food. It relates to a cover material.

  Conventionally, when eating instant fried noodles, spaghetti, etc., instant food containers that require hot water (hot water draining) treatment after pouring hot water after a predetermined time has been known. As a lid member having a hot water cutting function for sealing, for example, as shown in a side sectional view of FIG. 8, an aluminum foil (17) and a sealant are provided on the back surface of the top sheet (20) in which a piercing hole (77) is formed. There is a laminate of layers (16).

  However, in this cover material, the piercing hole (77) is torn unexpectedly during transportation or the like, and when hot water is cut off, the aluminum foil (17) and the sealant layer ( 16) must be broken, so the need for chopsticks and the size and shape of the torn opening is not constant, so smooth hot water drainage cannot be made, and the broken residue is mixed into food. There were problems such as fear of

  On the other hand, there is a lid material (3) with a hot water cutting function as shown in the side cross section of FIG. That is, the easy-peeling region (L1) and the adhesive region (L2) by the easy-peeling layer (30) formed by applying the easy-peeling agent to the predetermined shape region of the topsheet (20) and the backsheet (10). The perforations (6) are engraved on the boundary line between the easy peeling region (L1) and the bonding region (L2), and the back surface in the easy peeling region (L1). It is a lid material (3) with a hot water cut-off function of an instant food container (100) in which one to several hot water cut holes (70) are formed in a sheet (10) (see, for example, Patent Document 1).

  Use of the above-mentioned lid material with a hot-water cutting function (3) is to pour hot water into instant food (not shown) in the container body (2) and then to open the lid material with a hot-water cutting function (3). 2) Close the flange part (21) and leave it for a few minutes, warm the instant food in the container and loosen it softly.

  After that, for example, as shown in the perspective view of FIG. 10, the perforation (12) for peeling off the topsheet on the outer periphery of the easy-peeling region (L1) is pulled up, and the perforation formed on the topsheet (20) When the top sheet (20) in the easy peel region (L1) is peeled from the back sheet (10) while breaking (6), one or more already engraved in the easy peel region (L1) of the back sheet (10) Several hot water cutting holes (70) appear (expose), and the hot water cutting holes (70) are used for hot water cutting.

  However, in the production of the lid member with hot water function (3) in which one to several hot water cutting holes (70) are already engraved in the back sheet (10) as described above, one to several When the hot water cut hole (70) is engraved, the tip is made by a circular punching blade. At this time, a punching flaw is generated, and the punching flaw is mixed into the product in the process and is not suitable. There was a problem of causing non-defective products.

Then, as what solves the problem of the said lid material with a hot water cut-off function (3), what was developed recently is, for example, a plan view of FIG. 11A and FIG. There is a lid member (4) having a hot water cutting function as shown in the side sectional view of FIG. It is a sheet-like lid (for example, a circular shape) in which the top sheet (20) is the outer surface side and the back sheet (10) is stacked on the inner surface side (food side). Easy peeling by a release agent layer (30) formed by applying a release agent (peeling varnish) on the inner surface of the back sheet (10) and the surface sheet (20) in a partial area on the inner side. A region (L1) is provided, and the other inner surface of the back sheet (10) and the top sheet (20) is provided with an adhesive region (L2) in a state of being bonded with an adhesive layer (15). Yes.

  And for forming hot water cut ends at one place to several places (four places in the drawing) so as to surround the non-peel area (60) in the easy peel area (L1) in the composite sheet (10) in the easy peel area (L1). A half cut (50) is formed, and the back sheet (10) and the top sheet (20) are adhered to each other with an adhesive layer (15) in a non-peeling region (60).

  In addition, a pull tab (12) for peeling the surface sheet is provided on the periphery of the easy peeling region (L1) near the perforation (6), and an opening pull tab (13) is provided on the outer periphery on the bonding region (L2) side. Yes. A half-cut (5) for peeling is provided from the back sheet (20) side at the base of the pull-tab (12) for peeling the front sheet, and an opening pull tab (13) is provided at the approximate center of the periphery of the adhesive region (L2). It has been.

  The lid material (4) provided with the hot water cutting function of the instant food container having the above structure is located at the upper end opening of the container body (2) containing the instant food as shown in the side sectional view of FIG. By instantly sealing and packaging the container main body (2) by adhesively sealing to the flange portion (21), an instant food container in which instant food is hermetically packaged is obtained.

  In the lid material with a hot water cutting function of the container main body (2) in which the instant food is hermetically sealed as described above, the opening pull tab (13) on the outer peripheral edge on the adhesive region (L2) side shown in FIG. By pulling up, the back surface sheet (10) on the bonding region (L2) side is partially peeled off from the flange portion (21) of the container main body (2) shown in FIG. 12, and the opening is opened (not shown). After pouring hot water, the opening pull tab (13) on the outer periphery is covered again by folding it outside the flange part (21), and left for a few minutes to allow instant food in the container body (2). Loosen (not shown) softly.

  Then, the top sheet peeling pull tab (12) on the periphery of the easy peeling region (L1) shown in the plan view of FIG. 11A is pinched, and as shown in the perspective view of FIG. ) Is pulled up to peel the topsheet (20) in the easy peel region (L1) from the backsheet (10), and the topsheet (20) is cut along the perforation (6). It is cut off together with the back sheet (10) in the four (1 is not visible) hot water cut forming half-cut region (non-peeling region (60) shown in FIG. 11 (b)) adhered to (20). Then, four hot water outlets (70) are formed on the back sheet (10) in the easy peeling region (L1).

  Subsequently, the container body (2) is tilted to discharge the hot water contained therein from the hot water outlet (70), and the lid material with the hot water function is peeled off from the flange portion (21) of the container main body (2) again. In addition, there is one that can eat instant food (not shown) that has already been loosened (see, for example, Patent Document 2).

The above prior art documents are shown below.
JP 2000-2111675 A JP 2000-109141 A

  However, the above-described conventional lid material with a hot water cutting function has the following problems and demands in its production. First, as one of them, from the back surface (sealant layer (16)) side of the back sheet (10) in the easily peelable region (L1) shown in FIG. When engraving one or more hot cut forming half cuts (50) (not to hang), it is registered in the non-peeling area (60) in the release agent layer (30) that forms the easy peeling area (L1). However, if the registration is not good, there is a problem that a normal hot water cut-off (70) is not formed.

  Further, a half cut (50) for forming a hot water cut end is formed by punching using a circular cutting blade at the tip, and this cutting blade enters the top sheet (20) or conversely a composite sheet. If it is halfway through (10), there is a problem that the hot water cut-out (70) does not open or does not become a normal shape.

  The present invention solves the problems of the prior art, and the problem is that in the production of a lid with a hot water cutting function for an instant food container in which a top sheet and a back sheet are laminated, To provide a lid material with a hot water cutting function that does not cause punching flaws, can be easily formed with a release agent layer, and can be easily managed in relation to the formation of a hot water nozzle (no risk of appearance of defective products). is there.

  In order to achieve the above object in the present invention, first, in the invention of claim 1, the plastic film is mainly used, at least the back surface is a sealant layer, and the back surface is sealed to the flange portion of the container body. The surface of the back sheet having substantially the same shape as the flange portion and the paper layer as a main body, the back sheet and the back surface of the top sheet having the same shape are laminated via a pseudo-adhesive layer, and an opening pull tab and the opening The surface sheet peeling pull tab is provided in the vicinity of the outer peripheral edge facing the pull tab, and a large number of small holes for hot water cutting are engraved on the entire surface of the back sheet or on substantially half of the surface sheet peeling pull tab side. This is a lid material with a hot water cutting function.

  In the invention of claim 2, the diameter of the small hole for hot water cutting is in the range of 1 to 5 mm. The lid material with hot water cutting function according to claim 1 is provided.

  Moreover, in invention of Claim 3, the notch is given to one or both of the base part edge part of the said pulling tab for surface sheet peeling, The hot water cutting function attached in any one of Claim 1 thru | or 2 characterized by the above-mentioned. It is a lid material.

  According to a fourth aspect of the present invention, the hot water according to any one of the first or second aspect is characterized in that a half cut connecting the base end of the top sheet peeling pull tab is formed on the back sheet. It is a lid material with a cutting function.

  In the invention of claim 5, the top sheet is a paper layer or a laminate in which an aluminum foil is laminated on the back surface, and the back sheet is a laminate in which at least a plastic film and a sealant layer are laminated on the back surface. It consists of a body, It is set as the lid material with a hot water cutting function in any one of Claims 1 thru | or 4.

  Since this invention is the above structure, there exist the following effects.

  That is, according to the first aspect of the present invention, a back sheet having a shape substantially the same as the flange portion, which is mainly composed of a plastic film, at least the back surface is a sealant layer, and the back surface is sealed to the flange portion of the container body. The front surface of the sheet and the entire back surface of the surface sheet having the same shape as the back sheet are laminated via an easily peelable pseudo-adhesive layer, and the opening pull tab and the opening pull tab are disposed on the outer periphery. The surface sheet peeling pull tab is provided in the vicinity of the outer peripheral edge opposite to the hot water, and a large number of small holes for hot water cutting are engraved on the entire surface of the back surface sheet or on substantially half of the surface sheet peeling pull tab side. By using a lid material with a cutting function, when manufacturing this lid material, a large number of small holes for hot water cutting are used instead of one or several slightly larger hot water hole holes as in the prior art, and hot needles are used on the surface sheet. In time Because it can be a hot water cutting function with a lid there is no occurrence of fired 抜滓.

  Furthermore, according to the invention according to the first aspect, since the pseudo-adhesive layer having easy releasability at the time of peeling the top sheet is not formed in a pattern shape as in the prior art, the management is performed. Is easy, and manufacturing management related to the conventional registration and half-cut depth is easy for engraving hot water outlets (many small hot water holes). It can be a lid material with a hot water draining function that does not reveal good products.

  Moreover, according to the invention which concerns on the said Claim 2, by setting the diameter of the small hole for hot water cutting to the range of 1-5 mm, in the case of the hot water cutting, the lid material with the hot water cutting function which has appropriate hot water cutting property, can do.

  If the diameter of the small hole for hot water cutting is less than 1 mm, it will be clogged with the contents and the hot water cutting property will be lost. Conversely, if it exceeds 5 mm, a circular cutting blade will be used to form the hot water cutting hole (small hole for hot water cutting) Etc., and there is a risk that punch punches by this punching blade will be mixed in the product during production. Since it pops out, it is not preferable.

  According to the invention according to claim 3, the top sheet peeling pull tab is picked up and pulled up by notching one or both of the base end portions of the top sheet peeling pull tab. When the is peeled from the back sheet, the notch serves as a trigger for peeling, so that the top sheet can be peeled more easily.

  According to the invention of claim 4, the half cut connecting the base end of the top sheet peeling pull tab is engraved on the back sheet, so that the top sheet peeling pull tab is picked, and the half When the sheet is folded inward from the cut and pulled up, only the top sheet can be easily peeled off, and a lid material with a hot water cutting function can be obtained.

  Further, according to the invention according to claim 5, the top sheet is made of a paper layer alone or a laminate in which an aluminum foil is laminated on the back surface thereof, so that the surface is excellent in printability for a design of a product. Also, the aluminum foil laminated on the back surface gives the lid material or top sheet a dead hold property (a property that does not return to the original when bent), so it is easy to pour hot water while the lid material is opened halfway. Or it can be set as the lid | cover material with a hot water cut-off function which makes it possible to drain hot water, without peeling a surface sheet to the middle (without separating all surface sheets).

Furthermore, according to the invention according to claim 5, the back sheet is made of a laminate in which at least a plastic film and a sealant layer are laminated on the back surface, so that the flange portion of the container body is sealed (sealed) with a heat seal. ), And a large number of small holes for hot water cutting can be formed on the back sheet with a heated needle roll or the like, and there is no appearance of punching rods with a conventional circular punching blade. It can be set as the lid material with a hot water cutting function made into such a manufacturing method.

  Accordingly, the present invention is a lid for a container for instant food used for sealed packaging of instant food such as fried noodles, and has a hot water outlet that discharges hot water to be poured to soften the instant food. As a lid material with a hot water cutting function that is easy and not defective, it exhibits excellent practical effects.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is an explanatory view showing an example of a lid material with a hot water cutting function of the present invention, and FIG. 2 is an explanatory view showing another example of the lid material with a hot water cutting function of the present invention. Moreover, FIG. 3 is explanatory drawing which shows the process of peeling the surface sheet of the lid material with a hot water cutting function shown in FIG. 1, and FIG. 4 shows the process of opening the lid material with a hot water cutting function shown in FIG. FIG. 5 is an explanatory view showing a step of hot water cutting using the lid member with a hot water cutting function shown in FIG. 1, and FIG. 6 is a diagram showing a manufacturing process of the lid material with a hot water cutting function of the present invention. FIG. 7 is an explanatory view showing a part, and FIG. 7 is an explanatory view showing another part of the manufacturing process of the lid member with a hot water cutting function of the present invention.

  As an example of the lid member with a hot water cutting function of the present invention, for example, a plan view seen from above in FIG. 1 (a) and a side cross section of FIG. 1 (b) showing the BB plane in FIG. 1 (a). As shown in the figure, it has a circular shape, the back surface of the top sheet (20) in which the aluminum foil (17) is laminated on the back surface of the paper layer (40), and the same shape as the top sheet (20), The PET film (18) as a plastic film and the surface of the back sheet (10) provided with the sealant layer (16) on the back surface thereof are relatively weakly bonded via the pseudo adhesive layer (14), and the back sheet ( The sealant layer (16) of 10) is sealed to the flange portion (21) of the container body (2) to form an instant food container (100).

  Further, there is a lid member (1) with a hot water draining function provided with a pull tab (12) for opening the surface sheet in the vicinity of the outer peripheral edge facing the pull tab (13) for opening and the pull tab (13) for opening on the outer periphery. The characteristic feature is the lid material (1) with a hot water cutting function in which a large number of small holes for hot water cutting (52) are formed on the entire surface of the back sheet (10).

  In addition, as another example of the lid member with a hot water cutting function of the present invention, for example, as shown in a plan view seen from above in FIG. 2 (a), the back surface is a rectangular flange portion (21) of the container body. A lid member (1) with a hot water cut-off function to be sealed, in which a back sheet having substantially the same shape as the flange portion (21), and a paper layer as a main body, and a top sheet having the same shape as the back sheet are laminated. An opening pull tab (13) is provided at the corner, and a surface sheet peeling pull tab (12) is provided at the outer peripheral corner facing the opening pull tab. / It can also be set as the cover material (1) with a hot water cutting function by which many small holes for hot water cutting (52) are engraved on the 2nd surface.

In this way, on the entire surface of the back sheet (10) as shown in FIG. 1 (a), or on the surface sheet peeling pull tab (12) side approximately half of the back sheet (10) as shown in FIG. By manufacturing a large number of small holes for hot water cutting (52), a pseudo-adhesive layer (14) having an easy releasability when peeling the top sheet (20) is produced as in the prior art. It is easy to manage (form a pseudo-adhesive layer (14)), because it is formed on the entire surface of the both sheets (10, 20) (or may be substantially ½ surface) instead of being patterned. In addition, the engraving of a large number of small holes for hot water cutting (52) eliminates the trouble of manufacturing management related to registration (for half cutting for hot water cutting opening) and depth (for half cutting) as in the past. Such as a normal hot water outlet is not formed It is possible to emerge with no hot water cutting function with a lid material of goods (1).

  In the present invention, for example, as shown in the side sectional view of FIG. 1 (b), the diameters of a large number of small holes for hot water cutting (52) engraved so as to penetrate the entire surface of the back sheet (10). Is in the range of 1 to 5 mm.

  In this way, the diameter of a large number of small holes for hot water cutting (52) is reduced to a range of 1 to 5 mm as compared with one or more conventional hot water cutting holes, thereby engraving using a heated needle roll or the like. This manufacturing method can eliminate the appearance of punching punches by a circular punching blade or the like as in the prior art.

  Also, if the diameter is less than 1 mm, the contents are blocked and the hot water draining property is deteriorated. Conversely, if the diameter exceeds 5 mm, the conventional circular punching is formed to form the hot water cutting opening (small hole for hot water cutting). A blade or the like must be used, which is not preferable because there is a risk that the punch will be mixed into the product during production.

  Further, the engraving density of the hot water cutting hole (52) depends on the size of the hot water cutting hole (52) from the time required for hot water cutting. When the diameter is 4 mm, a suitable hot water cutting time is obtained when the distance between the hot water cutting small holes (52) is about 15 mm in the vertical and horizontal directions, that is, the hole opening ratio is about 7%.

  Further, in the present invention, for example, as shown in FIG. 2, the V-shaped notch (V) is applied to both of the base end (12a) of the pull-up tab (12) for peeling the topsheet. When the top sheet peeling pull tab (12) is picked up by the V-shaped notch (V) and pulled up to peel off the top sheet from the back sheet, this V-shaped notch (V) triggers the peeling, making it easier. The top sheet (20) can be peeled off.

  Instead of the V-shaped notch (V), an I-shaped notch, a U-shaped notch, or a simple notch may be used.

  Furthermore, in the present invention, for example, as shown in FIGS. 1 (a) and 1 (b), a half cut (12b) for detaching the surface sheet connecting the base end (12a) of the pull tab (12) for detaching the surface sheet. ) Is engraved on the back sheet (20). By engraving this half-cut (12b) for peeling off the top sheet, for example, as shown in the schematic side sectional view of FIG. When the pull tab (12) for peeling is picked, and the half cut (12b) for peeling the top sheet is used as a starting point and pulled inward, the top sheet (20) made of the paper layer (40) and the aluminum foil (17) Only the cover material (1) with a hot water cutting function that can be easily and reliably peeled off from the back sheet (10) together with the pseudo adhesive layer (14).

Further, in the present invention, the top sheet (20) may be a paper layer alone, and a PET (polyethylene terephthalate) film may be used as a protective layer on the surface thereof. For example, as shown in FIG. It can also be set as the laminated body by which the aluminum foil (17) was laminated | stacked on the back surface of the paper layer (40), and the surface paper layer (40) is excellent in the printability with respect to the pattern etc. of a product in this way, Moreover, since the aluminum foil (17) laminated | stacked on the back surface gives the deadhold property (property which does not return when bent) to the lid | cover material (1) or a surface sheet (20), for example, FIG. As shown in the perspective view, the pull pull tab (13) is pulled up to peel off the lid material (1) with a hot water cutting function from the flange (21) of the container body (2) halfway, As shown in FIG. 3, the hot water draining function can be used to allow hot water draining without peeling off the surface sheet (20) halfway (without detaching the entire surface sheet (20)). It is a cover material (1).

  Furthermore, for example, as shown in FIG. 1 (b), the back sheet (10) has a PET film (18) having a thickness of about 12 μm as a plastic film and a sealant layer (16) having a thickness of about 30 μm on the back surface. Thus, the sealant layer (16) on the back surface can be sealed (sealed) to the flange portion (21) of the container body (2) by heat sealing.

  Since this back sheet (10) is composed of a PET film (18) and a sealant layer (16) (there is no aluminum foil as in the prior art), a large number of small holes for hot water cutting (52) are formed. Can be formed with a heated needle roll, etc., and a large number of small holes for hot water cutting (52) can be efficiently produced by a manufacturing method that does not cause the appearance of a punch with a circular punching blade as in the prior art. can do.

  An example of production of the lid material (1) with a hot water cutting function of the present invention will be described. For example, as shown in the schematic view of FIG. 6, the back surface is a sealant layer (16) and the surface is a PET film (18). A large number of small holes for hot water cutting (52) are engraved and penetrated by a heated needle roll (not shown) on the entire surface of the wound back sheet (10).

  On the other hand, although not particularly illustrated, a roll-up surface sheet in which an aluminum foil is laminated on a paper layer is prepared.

  Subsequently, for example, as shown in the side view of FIG. 7, the melted polyethylene resin is simulated between the wound back sheet (10) and the wound top sheet (20) obtained above. It is set as the raw material (1a) of the lid material with a hot water cutting function which extruded from the T-die (55) as an adhesive layer (14), and sandwiched and laminated the back sheet and the front sheet with a press roll (56).

  The raw material (1a) of the lid material with hot water cutting function obtained above, and a punching die with a desired shape formed on a large number of faces, for example, the lid material with hot water cutting function (1) as shown in FIG. 1 (a) Can be produced efficiently.

  When eating instant foods (yakisoba, etc.) sealed with the lid material (1) with a hot water cutting function obtained as described above, as shown in the perspective view of FIG. 4, for example, dried yakisoba (not shown) In order to pour hot water, the pull pull tab (13) on the outer periphery is pulled up and peeled off halfway from the flange (21) of the container body (2) to open the container body (2). (22) is formed, and after the bag containing the sauce is taken out from the opening (22), hot water is poured and the lid is closed again (not shown), and the opening pull tab is wound around the flange portion. Loosen the dried fried noodles.

  Subsequently, for example, as shown in FIG. 3, the top sheet peeling pull tab (12) is pulled up starting from the top sheet peeling half cut (12b) engraved in the base, and only the top sheet (20) is back. It peels from the sheet | seat (10), the small hole for hot water cutting (52) appears, and as shown in the perspective view of FIG. 5, a surface sheet is removed.

  As shown in FIG. 5, the instant food container (100) is tilted with the surface sheet facing away from the opening pull tab (13), and the poured hot water is poured. (24) is discharged (hot water draining) from a large number of small holes for hot water cutting (52), and the contents are softly loosened instant food (fried noodles) and mixed with sauce or the like.

  Below, the material etc. which are used for each layer which comprises the lid material (1) with a hot water cutting function of this invention are demonstrated.

First, as the paper layer (40) of the top sheet (20) constituting the lid member (1) with a hot water cutting function of the present invention, the surface needs to be excellent in printability. A single-sided art paper or a double-sided art paper having a thickness of about ˜150 g / m ² is preferable. In addition, a coated paper, high-quality paper or the like having the same thickness can be used.

  Moreover, as an aluminum foil (17) which comprises the said surface sheet (20), it is common to use the thing of 5-20 micrometers, and this aluminum foil (17) is the pull tab (13) side especially for opening. In addition to having a dead hold property when only a part is opened and peeled off, it is suitably used as having light shielding properties and gas barrier properties.

  Moreover, as a pseudo-adhesion layer (14) which synthesize | combines a surface sheet (20) and a back surface sheet (10), as mentioned above, for example, it can also be a sand laminate of melted polyethylene. It is also possible to apply a thermoplastic resin such as the back surface (aluminum foil (17) surface) of the top sheet (20) and pressurize from the back sheet (10) side with a hot roll or the like to form the pseudo adhesive layer (14). .

Furthermore, as the sealant layer (16) of the back sheet (10) constituting the lid member (1) with a hot water cutting function of the present invention, for example, linear low density polyethylene (LLDPE) and low density polyethylene having excellent heat sealability. (LDPE), high density polyethylene (HDPE), polyolefin resin such as unstretched polypropylene (CPP), ethylene / vinyl acetate copolymer (EVA), ethylene / acrylic acid copolymer (EAA), ethylene / methacrylic acid copolymer A film of an ethylene copolymer resin such as a polymer (EMAA) is preferably used, and further, an incompatible component for the polyolefin resin, such as polystyrene or polybuden, 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 and opened (easy peel).

  As described above, the lid material (1) with a hot water cutting function of the present invention can be suitably used as a lid for containers such as instant yakisoba or instant raw noodles that are poured into hot water to soften and drain and then eat. It can be done.

1 shows an embodiment of a lid member with a hot water cutting function of the present invention, (a) is a top view thereof, and (b) is a side sectional view showing a BB plane of (a). It is a top view which shows other one Embodiment of the cover material with a hot water cutting function of this invention. It is a cross-sectional schematic diagram explaining the process of peeling the surface sheet of the lid material with a hot water cut-off function of one example shown in FIG. 1 from a back surface sheet. It is a perspective view explaining the process of opening the lid material with a hot water cut-off function of one example shown in FIG. It is a perspective view explaining the process of hot water cutting using the lid material with a hot water cutting function of one example shown in FIG. It is a perspective view explaining the manufacturing process of the back surface sheet | seat which comprises one example of the cover material with a hot water cutting function of this invention. It is a side view explaining an example of the process of producing the raw material of the lid material with a hot water cutting function of this invention. It is a sectional side view explaining the example of the cover material which has the conventional hot water discharge function. It is a sectional side view explaining the other example of the conventional lid material with a hot water cutting function. It is a perspective view explaining other examples of the conventional lid material with a hot water cutting function. The other example of the lid | cover material which has the conventional hot water discharge function is demonstrated, (a) is the top view, (b) is a side cross section showing the BB surface of (a). . It is a sectional side view explaining the example which integrated the cover material which has the conventional hot water discharge function with the container main body. It is a perspective view explaining an example of the peeling state of the surface sheet of the cover material which has a conventional container main body and an integrated hot water discharge function.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lid with hot water cutting function 1a ... Raw material of lid material with hot water cutting function 2 ... Container body 3 ... Conventional lid material with hot water cutting function 4 ... Lid with conventional hot water cutting function 5 ····································································································································································· Pull tab 14 ... Pseudo-adhesive layer 15 ... Adhesive layer 16 ... Sealant layer 17 ... Aluminum foil 18 ... PET film 20 ... Surface sheet 21 ... Flange 22 ... Container opening 24 ... Waste water 30 ... Release layer 40 ... Paper layer 50 ... Half cut for hot water outlet formation 52 ... Small hole for hot water cutting 55 ... T-die 56 ... Press roll 60 ... Non-peeling area 70 ... Hot water outlet 77 ... suddenly For breaking holes 100 ‥‥ instant food containers L1 ‥‥ peelable region L2 ‥‥ bonding region V ‥‥ V notch

Claims (5)

  Mainly a plastic film, at least the back surface is a sealant layer, and the back surface is sealed to the flange portion of the container body. And the back surface of the top sheet having the same shape as that of the front surface sheet is laminated via a pseudo-adhesive layer. A lid with a hot water cutting function, wherein a large number of small holes for hot water cutting are engraved on the entire surface or approximately half of the surface sheet peeling tab side.   The diameter of the small hole for hot water cutting is in the range of 1 to 5 mm, the lid material with hot water cutting function according to claim 1.   The lid member with a hot water cut-off function according to any one of claims 1 to 2, wherein one or both of base end portions of the topsheet peeling pull tab are notched.   The lid material with a hot water cutting function according to any one of claims 1 to 2, wherein a half cut connecting a base end portion of the pull tab for peeling the top sheet is formed on the back sheet.   The top sheet is composed of a single paper layer or a laminate in which an aluminum foil is laminated on the back surface, and the back sheet is composed of at least a plastic film and a laminate in which a sealant layer is laminated on the back surface. Item 5. A lid material with a hot water cutting function according to any one of Items 1 to 4.

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