JP2008094449A - Lid with hot-water draining function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low cost lid having the function of draining hot water used for a molded container which facilitates the opening of a hot water draining port, prevents some small pieces of spice such as fine cut green onion from flowing out even if they are included in the content, and enables a quick hot-water draining. <P>SOLUTION: A lid of this invention is constituted as follows. An aluminum foil is adhered through an extrusion laminating process to the back surface of a sheet of paper having the front surface with a reference mark printed for a positional alignment for another work under application of polyolefine type thermo-adhering resin and it is formed by a laminated sheet having an easy-peeling sealant layer overlying the aluminum foil surface. A knob piece for the hot-water draining opening is arranged at one end of the lid. A lateral long V-shaped semi-cut line and a frame-like semi-cut line are arranged near the knob piece in sequence to such a depth as one entering into the paper layer from the back side. The back surface of the paper in the laminated sheet includes in advance a range from the lateral V-shaped semi-cut line to the frame-like semi-cut line, an easy-peeling varnish layer is arranged in a shape excepting the inside portion of the frame-like semi-cut line. A plastic mesh member is thermally stuck to the back surface of the lid in such a manner as one in which the frame-like semi-cut line may be covered. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lid provided with a hot water drainage function, and more particularly, a lid of a container used for hermetically wrapping dry instant food that requires hot water reconstitution represented by instant yakisoba, and is a dried instant food The present invention relates to a lid provided with a hot water draining function for quickly discharging unnecessary hot water after pouring hot water into a container in order to soften the hot water.

  Conventionally, as a lid body having the above-described hot water cutting function, for example, a lid body is provided with a surface base material provided with a peelable adhesive surface on one surface and a thermoadhesive resin layer on one surface. The hot water cutting substrate is formed of a laminate that is peelably bonded to the peelable adhesive surface and the hot water cutting substrate surface, and at least a hot water opening opening knob is provided on the outer peripheral edge of the lid. A plurality of regular half cuts for opening the hot water cut opening are provided so as to penetrate the hot water cutting base material from the thermoadhesive resin layer side on the knob opening side for the cut opening, and the hot cut opening opening is used when used. The hot water cutting base material provided with the half cut for the hot water outlet opening was exposed by a method of picking a knob and peeling off the surface base material by a desired area on the peelable adhesive surface, and injected from there. Some hot water can be discharged (for example, patent literature) Reference).

Moreover, as a lid material with a hot water cutting function used for the lid material of the cup-shaped container, for example, the lid material is composed of a composite sheet in which at least a base material layer / aluminum foil / sealant layer are sequentially laminated from the outside, and its outer shape is The outer shape of the cup body is almost the same as the opening of the cup body. A pouring hole forming knob is provided at one end of the cup body, and a V-shaped cut line is provided at the opposite end of the cup body, with the tip portions overlapping each other inward. In addition, a V-shaped cut line is inclined and becomes deeper toward the center as it goes inward, and at the apex of the V-shaped part, A lid material with a hot water cutting function which is formed so as to overlap with the right cut line, and further provided with a V-shaped cut line at a depth that does not reach the aluminum foil from the outside through the base material layer. (For example, see Patent Document 2) ).
JP 2002-160757 A (page 2, pages 6 to 7, FIGS. 2 to 5) JP 2003-31750 A (2nd to 4th pages, FIGS. 1 to 5)

According to the lid body with a hot water cut-off function of the invention described in Patent Document 1, the lid body thermally bonded to the upper peripheral edge of the container body is picked by the knob for opening the hot water cut opening provided on the outer peripheral edge thereof. By peeling off, the surface base material adhered in a peelable manner is peeled off, and the hot water cutting base material provided with the lower half cut for hot water outlet opening is exposed. The injected hot water can be discharged and cut through a plurality of regular cuts for opening the hot water outlet.
However, since the plurality of regular hot-cut opening half-cuts of the hot-water cutting substrate are formed with multiple regular cut lines, the internal lines during hot-water cutting spread the cut lines, Although it is stated that cutting is possible, the internal pressure during hot water cutting is not necessarily constant depending on the handling method, and when the internal pressure is low, there is a problem that the cut line spread is small and it takes time for hot water cutting. When the internal pressure is high, the width of the cut line increases and the hot water can be cut quickly. On the other hand, both ends of the cut line are further torn, and the opening of the hot water cut opening becomes larger than necessary. There was a problem that things flowed out, and there was a problem in terms of the stability of the opening of the hot water outlet.
Furthermore, in order to provide a large number of regular half-cut cut lines as described above, a precise and elaborate punching die is required. Such a punching die requires labor and time for production, and costs are also high. As the cost increases, there is a problem that is disadvantageous in terms of economy.

In addition, the lid material with a hot water draining function of the invention described in Patent Document 2 aims to provide a lid material having a hot water draining function and an excellent gas barrier property. The character-shaped cut line is inclined and deeper toward the center as it goes inward, and at the apex of the V-shaped part, the left cut and the right cut overlap. The V-shaped cut line is provided at a depth that does not reach the aluminum foil from the outside of the composite sheet through the base material layer.
Therefore, it is possible to make an excellent lid material in terms of gas barrier properties. However, as to the hot water cutting function, for example, as described in Example 1, a V-shaped shape as shown in FIG. For the cut line (a), the distance between the left and right cut lines is about 10 mm, the depth is about 8 mm, the length of one cut line is about 3 mm, the distance between the cuts is about 1 mm, and each side is 9 mm. In this figure, three V-shaped cut lines (a) are arranged side by side. In order to quickly perform hot water cutting, each V-shaped cut line (a) is arranged as described above. The cut line (a) needs to have a relatively large shape. However, when the hot water outlet is provided in such a size, there is no problem if the contents are relatively thick noodles, but the noodles such as fried noodles are thin, and small tools such as dry chopped leek are attached together with the noodles. In such a case, there is a problem that the noodles protrude from the V-shaped hole when the hot water is cut, and particularly small tools such as chopped leeks are discharged together with the hot water.
Also in the present invention, the V-shaped cut line (a) is formed by finely arranging fine cut lines, so that it takes time and labor to manufacture the die. However, there is a problem that is disadvantageous in terms of economy.

  The present invention has been made in order to solve the above-mentioned problems, and the problem is a container lid used for sealed packaging of dry instant foods that require hot water reconstitution represented by instant fried noodles. Thus, it is possible to open the hot water cut opening provided in the lid body with a simple operation, and the open hot water cut opening can make each hot water cut hole sufficiently small and stable in shape and size. Even if small contents such as dry chopped leek are attached with the noodles as the contents, these small ingredients are not discharged with hot water at the time of hot water cutting, and the laminated structure of the lid is also possible. An object of the present invention is to provide a lid body having a hot water cutting function excellent in performance and economy that can be simplified as much as possible, can be easily processed to provide a hot water inlet in the lid body, and can reduce the manufacturing cost.

The above problems can be solved by the following present invention.
That is, the invention described in claim 1 is a lid body that is thermally bonded to a flange portion of a container in which a flange portion is provided on the periphery of the upper opening, and seals the container.
The lid is a laminated sheet in which one side of an aluminum foil is laminated with paper by extrusion lamination using a polyolefin-based heat-adhesive resin and an easy peel sealant layer is laminated as the innermost layer on the other side. Formed,
At one end of the outer peripheral edge of the lid body is provided with a hot water outlet opening knob for opening a hot water outlet for discharging hot water poured into the container,
In the region near the end portion of the lid where the hot water cut opening is provided, an opening structure for opening the hot water cut is formed on the back side of the lid from the inner easy peel sealant layer to the paper layer. A frame-shaped half-cut line for cutting a hot water cut at a depth entering, and a horizontally-long V-shaped half-cut line having a wide angle extending on both sides to the depth between the frame-shaped half-cut line and the knob And
The lid includes a paper layer on a side in contact with the polyolefin-based heat-adhesive resin layer including at least the horizontally long V-shaped half-cut line portion to the frame-shaped half-cut line portion. An easily peelable varnish layer that is pre-pattern-coated is provided in the shape of the entire body width, and the inside of the frame-shaped half-cut line leaving a slightly intrusive part and removing the inside,
Further, on the surface of the easy peel sealant layer of the innermost layer of the lid, a plastic mesh is provided on the outer peripheral edge of the frame-shaped half-cut line so as to cover a portion surrounded by the frame-shaped half-cut line. It consists of a lid provided with a hot water cutting function characterized by being attached by thermal bonding.

  In the present invention, the plastic mesh is used by being thermally bonded to the innermost peel-peeling sealant layer of the lid, and particularly strong adhesion is not necessary, but adhesion to an easy peel level is necessary. is there. For that purpose, a mesh made of a polyolefin resin such as polyethylene, an ethylene copolymer, polypropylene, or a propylene copolymer is preferable.

  The invention described in claim 2 is characterized in that the plastic mesh is a quadrilateral mesh including a square or rhombus whose one side has a length of 1 to 4 mm. It consists of a lid with a function.

  According to a third aspect of the present invention, there is provided hot water pouring for opening a hot water pouring port for pouring hot water into a container at an end portion of the lid opposite to an end portion provided with a knob for opening the hot water cut opening. An entrance opening knob is provided, and the lid is provided with a hot water cutting function according to claim 1 or 2.

According to the first aspect of the present invention, since the lid body having a hot water cutting function is configured as described above, the following effects can be obtained.
(1) After pouring hot water into the container in which the contents are stored and returning the contents to hot water, when the excess hot water is drained, a hot water opening provided at one end of the outer peripheral edge of the lid The frame is easily separated by the horizontally long V-shaped half-cut line, the easily peelable varnish layer provided in a pattern on the paper surface, and the frame-shaped half-cut line by picking up the tab and peeling off the lid. Can be opened.
(2) Since a plastic mesh for hot water cutting is attached to the open hot water outlet by thermal bonding, even if small ingredients such as dry chopped leek are added with noodles as the contents, the mesh By selecting a suitable size, it is possible to prevent these small tools from flowing out together with unnecessary hot water, and to perform hot water draining safely and quickly.
(3) Since the plastic mesh is attached to the hot water cut-off port by thermal bonding, it is not necessary to provide a large number of regular cuts and the like, and it can be manufactured easily and at low cost. Can do.
(4) In addition, as a packaging form for dried instant foods such as fried noodles that require reconstitution, recently, the contents are filled into a molded container with a flange, the lid is thermally bonded and sealed, and then the whole The form which wraps with the shrink film etc. which printed the pattern etc. is increasing. When such a packaging form is adopted, the level of moisture resistance and the like required for the lid is relaxed compared to the case where packaging with a shrink film is not performed, and rather an improvement in hot water cutting function and a reduction in cost are strongly demanded. It has been. In this respect, the lid body having a hot water cutting function according to the present invention has the structure of the laminated sheet forming the lid body as described above, including paper, polyolefin-based heat-adhesive resin layer, aluminum foil, and easy peel sealant layer. Laminated materials that are laminated in order, and are not taking measures to prevent deterioration of moisture resistance due to the half-cut line provided on the back side of the lid by attaching a biaxially stretched polyester film etc. to the outer surface of the paper In addition to reducing costs by reducing the cost, the hot water outlet is configured as described above to improve the hot water cutting function and reduce the cost of the entire lid.
Therefore, the lid body having the hot water draining function of the present invention, as described above, is filled with the contents in the molded container, and the lid body is thermally bonded and sealed, and then the whole is further printed with a pattern or the like. As a lid in the case of taking a packaging form such as packaging with a film or the like, it can be particularly suitably used.

  According to the invention described in claim 2, in the configuration of the lid body having the hot water cutting function according to the invention described in claim 1, the plastic mesh is a square having a side length of 1 to 4 mm. Or since it is set as the structure of the quadrilateral mesh containing a rhombus, in addition to the effect of the invention described in claim 1, when performing hot water cutting, there is a small tool such as the chopped leek in the contents. Even if it is contained, the outflow can be prevented more reliably and the hot water can be quickly drained.

According to the invention described in claim 3, in the configuration of the lid body having the hot water cutting function according to the invention described in claim 1 or 2, an end portion provided with a knob for opening the hot water mouth of the lid body; Since the hot water inlet opening knob for opening the hot water inlet for injecting hot water into the container is provided at the opposite end, the effect of the invention according to claim 1 or 2 is provided. In addition, when opening the hot water inlet for hot water reconstitution of the contents stored in the container, the hot water inlet opening knob is more easily picked and the lid is peeled off to remove the hot water inlet. Can be opened.
Needless to say, the hot-water inlet opening tab can be used when the entire lid is peeled off and removed after the contents have been reconstituted and drained.

  The lid provided with the hot water draining function of the present invention is, as described above, a lid of a container used for hermetically wrapping dry instant food that requires hot water reconstitution represented by instant yakisoba, and is a dried instant food. In order to soften the hot water, the hot water can be easily poured into the container, and after the hot water, only the hot water that is no longer needed can be easily and quickly discharged. In the case of instant fried noodles, a molded container formed by laminating a polystyrene film on the inner surface of a foamed polystyrene sheet or a double container formed by molding a polypropylene sheet is often used, but any container can be used. It is.

Hereinafter, the present invention will be specifically described with reference to the drawings.
The lid provided with the hot water cutting function of the present invention can be configured, for example, as shown in FIGS.
That is, FIG. 1 is a back view showing a configuration of an embodiment of a lid body having a hot water cutting function of the present invention.
FIG. 2 is a back view of the lid body having a hot water cutting function of the present invention shown in FIG. 1 and is provided in a horizontally long V-shaped half cut line and a frame-shaped half cut line, and a paper layer of the lid body. It is a figure which shows the shape and positional relationship of a pattern-like easily peelable varnish layer. Therefore, the plastic mesh 10 and the mesh heat bonding part 11 and the heat bonding scheduled part 12 of the lid are omitted.
3 is a schematic cross-sectional view taken along the line AA of FIG. 1, and is a schematic cross-sectional view showing an example of a laminated structure of the lid body having the hot water cutting function of the present invention. However, the lid was shown upside down so that the front surface was up and the back surface was down.
Moreover, this invention is not limited to these drawings, unless the summary is exceeded.

In FIG. 1, a lid 100 having a hot water cutting function has an outer shape formed in a substantially rectangular shape, and a hot water outlet opening knob 6 is provided at one end of the outer peripheral edge (the lower left corner in the figure). A hot water inlet opening knob 7 for opening a hot water inlet for pouring hot water into the container is provided at the opposite end (the upper right corner in the figure).
Then, on the back surface of the region near the end portion of the lid 100 where the hot water cut opening opening knob 6 is provided, a horizontally long V-shaped half-cut line extending from the outside of the lid 100 toward the inside toward the wide angle at both sides. 8 and a frame-shaped half-cut line 9 for cutting off a hot water cut-off are provided in order at appropriate intervals, and further, a plastic is formed so as to cover a portion surrounded by the frame-shaped half-cut line 9 A made mesh 10 is attached to the outer peripheral edge of the frame-shaped half-cut line 9 by being thermally bonded by a mesh heat bonding portion 11.

  Note that the thermal bonding scheduled portion 12 indicated by a broken line on the peripheral edge portion of the lid body 100 indicates a preferable region when the lid body 100 is thermally bonded to the flange portion of the container. In the vicinity of the piece 6, as shown in the drawing, it is preferable that the bent portion at the end of the horizontally long V-shaped half-cut line 8 is heat-bonded so as to be included in the region of the heat-bonding planned portion 12. The seal by 100 is kept safe, and when the lid 100 is peeled off by picking the tap piece 6 for opening the hot water cut opening, the hot cut opening can be surely opened by the frame-shaped half-cut wire 9.

  Further, the lid body 100 having a hot water cutting function is formed from the outside (upper side in the figure) from the outside as shown in FIG. 3 (a diagram showing the AA line schematic cross-sectional view of FIG. 1 turned upside down). 1. It is formed of a laminated sheet in which a polyolefin-based heat-adhesive resin layer 2, an aluminum foil 3, and an easy peel sealant layer 4 are sequentially laminated, and a hot water cut-off opening is formed on one side of the lid 100 (the left side in the figure). An opening knob 6 is provided, and a hot water inlet opening knob 7 is provided on the other side (right side in the figure), and a hot water outlet opening knob 6 of the lid 100 is provided. In the region closer to the side portion on the side, an opening structure for opening the hot water cut-off opening is formed from the innermost easy peel sealant layer 4 into the paper 1 layer in the direction from the side portion of the lid 100 toward the center portion. Horizontally V-shaped half-cut line at the depth to enter And the frame-shaped half-cut line 9 are provided in order at appropriate intervals, and at least the horizontally long surface of the lid 100 on the side in contact with the polyolefin-based heat-adhesive resin layer 2 is provided. It is a region of the full width of the lid including 8 parts of the V-shaped half-cut line to 9 parts of the frame-like half-cut line, and the inside of the frame-like half-cut line 9 leaves a slightly intruded part. An easily peelable varnish layer 5 (see also FIG. 2) that has been pre-pattern coated is provided in a shape with the inner side removed, and the frame-shaped half-cut line is formed on the innermost peelable sealant layer 4 surface. A plastic mesh 10 is attached to the outer peripheral edge of the frame-shaped half-cut line 9 by being thermally bonded by a mesh thermal bonding portion 11 so as to cover a portion surrounded by 9.

In addition, when printing a pattern or the like on the lid body having the hot water cutting function of the present invention, although not shown in the sectional view of FIG. 3, the pattern or the like is formed on the outer surface of the lid body 100, that is, the outer surface of the paper 1. A printing layer can be provided.
The lid provided with the hot water draining function of the present invention is not particularly limited as a packaging form using the lid, but as described above, a molded container with a flange is filled with the contents, and the lid After heat-sealing and sealing, it can be used especially suitably when the whole is further packaged with a shrink film. Therefore, depending on whether or not a pattern is printed on the shrink film, it may or may not be necessary to print the pattern or the like on the lid. Just print it out.
Further, as described above for printing of a pattern or the like, in the lid body having the hot water cutting function of the present invention, the easily peelable varnish layer 5 is provided in a pattern on the inner surface of the paper 1, and the position is set on this. In addition, the horizontally long V-shaped half-cut line 8 and the frame-shaped half-cut line 9 are provided, and the plastic mesh 10 is thermally bonded, so that a reference for comprehensively aligning them is provided. is required. As such a standard, when a pattern or the like is printed on the outer surface of the paper 1, it can be used. However, when a pattern or the like is not printed, a mark or the like is provided on the outer surface of the paper 1 by printing or the like. May be.
Furthermore, a transparent resin layer such as an overprint varnish may be provided on the outer surface of the paper 1 for the purpose of preventing dirt, improving water resistance and moisture resistance.

  FIG. 2 is a rear view of the lid body having a hot water cutting function shown in FIG. 1, and a horizontally long V-shaped half-cut line 8 and a frame-shaped half-cut line 9 and a polyolefin of the paper 1 of the lid body. It is a figure which shows the shape and positional relationship of the easily peelable varnish layer 5 pattern-coated on the surface in contact with the system thermoadhesive resin layer 2, and the easily peelable varnish layer 5 is at least the above-mentioned horizontally long V-shaped half In the region of the full width of the lid including 8 parts of the cut line to 9 parts of the frame-like half cut line, the side of the horizontally long V-shaped half cut line 8 slightly enters the knob opening opening 6 side. The frame-shaped half-cut line 9 side extends from the end of the frame-shaped half-cut line 9 to the center side of the lid by about 3 mm to 10 mm. Inside the half-cut line 9, leave the part that goes slightly inside. It is preferably provided in a shape obtained by removing the inner.

The manufacturing method of the lid body 100 having the hot water cutting function having such a configuration is, for example, that after the necessary printing is performed on the surface of the paper 1, the rear surface thereof is aligned with the printing of the front surface to easily form a predetermined shape. The peelable varnish layer 5 is provided by a printing means, and then the aluminum foil 3 is bonded to the printing surface of the easy peelable varnish layer 5 of the paper 1 by an extrusion laminating method using a polyolefin-based heat-adhesive resin. An easy peel sealant layer 4 is laminated on the surface of the aluminum foil 3 by extrusion coating to produce a laminated sheet for the lid 100.
Next, the easy-peel sealant layer is formed by aligning the horizontally long V-shaped half-cut line 8 and the frame-shaped half-cut line 9 on the back side of the laminated sheet for the lid body with printing on the front side. 4 is provided in a predetermined shape at a depth that slightly enters one sheet of paper, and the lid body is punched into individual shapes to produce a single-sheet lid body 100.
Subsequently, a plastic mesh 10 is applied to the outer peripheral edge of the frame-shaped half-cut line 9 so as to cover a portion surrounded by the frame-shaped half-cut line 9 on the back surface side of the single-piece lid 100. It can be easily manufactured by thermal bonding.

  In the production of the lid body 100 having the above-described hot water cutting function, the thermal bonding of the plastic mesh 10 to the lid body 100 may be performed by punching the rolled-up plastic mesh 10 into individual shapes. Since it is possible, the lid 100 that has been punched into individual shapes and the plastic mesh 10 may be thermally bonded to each other. For example, the lid 100 may be wound around the lid 100 that has been punched into individual shapes. Punching and thermal bonding may be performed while pulling out the take-out plastic mesh 10, and furthermore, a method of performing thermal bonding and punching while pulling out both of them as a wound shape may be employed.

In the lid provided with the hot water cutting function of the present invention, the paper 1 used for the laminated sheet includes fine paper, art paper, coated paper, pure white roll paper, special kraft paper, bleached kraft paper, etc. Label paper, cup base paper, etc. with improved water resistance can be used.
The thickness of the paper is preferably in the range of 50 to 200 g / m ² as the basis weight of rice. If the rice basis weight is less than 50 g / m ² , the thickness is too thin and the rigidity of the lid is insufficient, and the processing of the half-cut line becomes difficult. Moreover, when the basis weight of rice exceeds 200 g / m ² , the rigidity of the lid is excessively high and the cost is increased, which is not preferable.

  The easy peel resin used for the easy peel sealant layer 4 of the laminated sheet is slightly different depending on the material of the container to which the lid is thermally bonded, but when the container is a polystyrene molded container, a styrene resin and a polyolefin resin For example, a resin obtained by grafting styrene onto polypropylene and a resin obtained by blending polyethylene and an ethylene-vinyl acetate copolymer can be used. Further, when the container is a polypropylene molded container, a resin obtained by blending an ethylene-vinyl acetate copolymer with a tackifier such as a hard resin can be used.

As polyolefin-based heat-adhesive resin used for extrusion lamination in the production of the laminated sheet, in addition to low density polyethylene, ethylene-methacrylic acid copolymer, ethylene-acrylic acid copolymer, ionomer, etc. should be used. Can do.
Moreover, as the easy-peeling varnish used for the easy-peeling varnish layer 5 provided by pattern-coating on the paper surface of the laminated sheet, it is easy to peel off from the polyolefin-based heat-adhesive resin used for extrusion lamination. For example, cellulose resins such as nitrocellulose and acetylbutylcellulose, nitrocellulose-polyamide resins, polyamide resins, single or mixed resins such as polyvinyl alcohol, or silicone resins added to these resins Used resin can be used. An easily peelable varnish layer 5 can be formed by dissolving these resins in a volatile solvent to prepare a coating solution, and applying and drying in a pattern by a printing means such as gravure printing or flexographic printing. Further, a colorant can be added to the easily peelable varnish in order to make the coated shape easy to see.

  Next, as the plastic mesh 10 thermally bonded to the innermost peelable sealant layer 4 of the lid 100, as described above, polyethylene, ethylene copolymer, polypropylene, propylene copolymer, etc. A mesh made of a polyolefin-based resin is preferable, and the mesh may be any quadrilateral including a square or rhombus having a side length of 1 to 4 mm, and the shape itself is not particularly limited. Moreover, the thickness of a mesh line should just be 0.2-1.0 mm.

  Hereinafter, the present invention will be described more specifically with reference to examples.

The lid body 100 having the hot water cutting function having the configuration shown in FIGS. 1 to 3 was manufactured using the following materials and dimensions to obtain a lid body having the hot water cutting function of Example 1.
[1] Production of laminated sheet of lid 100 (see FIG. 3)
(A) A coated paper having a basis weight of 104.7 g / m ² is used for the paper 1, and a printing layer such as a pattern, a character, and a barcode is provided on the surface by gravure printing, and the surface is printed on the back surface. The easy-peelable varnish layer 5 was printed in the shape shown in the easy-peelable varnish layer 5 of FIG.
The printed layer on the surface has the external dimensions of the individual lids (however, the vertical and horizontal dimensions including the protruding portion of the hot water inlet opening knob 7 in FIG. 1 are 169.5 mm in length and 189 in width). .5 mm is provided with dimensions that can be accommodated therein.
Further, as the easily peelable varnish of the easily peelable varnish layer 5, a varnish produced by adding a silicone resin to a nitrocellulose resin and further adding a pink colorant was used.
(B) An aluminum foil having a thickness of 7 μm is used as the aluminum foil 3, and the low-density polyethylene is thickened as a polyolefin-based heat-adhesive resin layer 2 on the surface of the paper 1 on which the easily peelable varnish layer 5 is formed. They were bonded together by an extrusion laminating method using 15 μm.
(C) Next, 30 parts by mass of linear low density polyethylene, 30 parts by mass of high impact polystyrene, 30 parts by mass of styrene-butadiene block copolymer as an easy peel sealant layer 4 on the aluminum foil 3 surface of the laminated sheet, A blended resin obtained by blending 10 parts by mass of a styrene-butadiene elastomer was extruded and coated to a thickness of 25 μm to form a laminated sheet for the lid 100.

[2] As shown in FIG. 1 to FIG. 3, at a depth slightly entering one paper layer from the innermost easy peel sealant layer 4 on the back side of the laminated sheet for the lid 100 produced as described above. Then, a horizontally long V-shaped half-cut line 8 and a frame-shaped half-cut line 9 for cutting a hot water cut-out were provided in alignment with the printed layer on the front side.
[3] Next, the laminated sheet is aligned with the printed layer on the surface side and punched into the shape of individual lids, and then the mesh 10 is made of plastic and has a side length of 2 mm each. Use a polyethylene mesh with a quadrilateral and mesh line thickness of 0.4 mm so that it covers the part surrounded by the frame-shaped half-cut line 9 on the surface of the easy peel sealant layer 4. Then, the outer peripheral edge of the frame-shaped half-cut wire 9 was thermally bonded as shown by the mesh heat-bonding portion 11 to obtain a lid body having the hot water cutting function of Example 1.
In addition, the dimension of each part of the cover body provided with the said hot water cutting function is as follows.
The vertical and horizontal dimensions of the outer shape of the lid 100 excluding the protruding portion of the hot-water inlet opening knob 7 are 165 mm in length and 185 mm in width.
Further, the shape of the hot water cut opening surrounded by the frame-shaped half-cut line 9 is as shown in the figure, and the dimension thereof is the largest portion from the hot water cut opening opening knob 6 side toward the center portion side of the lid 100. The length was 33 mm, and the length in the width direction perpendicular thereto was 35 mm.

[Evaluation]
The lid body provided with the hot water cutting function of Example 1 produced as described above was placed in the container body with a flange portion formed by laminating a polystyrene film on the inner surface of the expanded polystyrene sheet, and as a content, a commercial instant Filled with distilled dried noodles and dried chopped onions, and after heat-sealing and sealing the flange as shown in the heat-bonding scheduled portion 12 in FIG. 1, for opening the hot water inlet of the lid When the knob 7 was picked and the lid body was peeled off by about 1/3, it was smoothly peeled off and the hot water inlet could be opened.

  Next, after pouring hot water from the hot water inlet that was opened, the peeled lid was returned to its original state and held for 3 minutes, and the contents were reconstituted with hot water. Is gradually peeled off, and at first, opening with the easy peel sealant layer 4 starts. When the horizontally long V-shaped half-cut line 8 is reached, the easily peelable varnish layer 5 and the polyolefin-based heat-adhesive resin are removed. Peeling easily proceeds at the interface with the layer 2, and further, from the portion approaching the tip of the frame-shaped half-cut line 9, the easily peelable varnish layer 5 is surrounded by the frame-shaped half-cut line 9. Therefore, in this part, the entire layer of the lid is lifted up, and the peeling easily proceeds at the interface between the easy-peelable varnish layer 5 and the polyolefin-based heat-adhesive resin layer 2 around the lid. The part surrounded by the half-cut line 9 of hot water Ri could be easily opened as the mouth.

And since the polyethylene mesh 10 is thermally bonded to the open hot water outlet by the mesh heat bonding part 11 on the inner surface of the lid, the container is tilted so that the hot water outlet is on the bottom. Unnecessary hot water could be quickly discharged from the hot water outlet. At this time, since the mesh of the polyethylene mesh was sufficiently small, the chopped green onion reconstituted with the noodles did not flow out with the hot water and could be cut off well.
Moreover, after the hot water cutting was finished, the hot-water inlet opening knob 7 for the lid was picked again, and the entire lid was easily peeled off to open the container.

  As described above, the lid body having a hot water draining function of the present invention can be suitably used as a lid body for containers used for hermetically wrapping dry instant foods that require hot water reconstitution represented by instant yakisoba. However, since the size of the hot water cut opening and the mesh size of the plastic mesh attached thereto can be arbitrarily set, there are no particular restrictions on the contents and the use as long as the same function can be used.

It is a back view which shows the structure of one Example of the cover body provided with the hot water cutting function of this invention. In the back view of the lid body having the hot water cutting function of the present invention shown in FIG. 1, the horizontal V-shaped half-cut line and the frame-shaped half-cut line, and the pattern-like ease provided in the paper layer of the lid body It is a figure which shows the shape and positional relationship of a peelable varnish layer. It is an AA line schematic cross section of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Paper 2 Polyolefin-type heat-adhesive resin layer 3 Aluminum foil 4 Easy peelable sealant layer 5 Easy peelable varnish layer 6 Knob piece for hot water inlet opening 7 Knob piece for hot water inlet opening 8 Horizontally V-shaped half-cut line 9 Frame-shaped half-cut wire 10 Plastic mesh 11 Mesh thermal bonding part 12 Thermal bonding planned part 100 Lid with hot water cutting function

Claims (3)

In the lid that seals the container by heat bonding to the flange part of the container provided with a flange part at the periphery of the upper opening,
The lid is a laminated sheet in which one side of an aluminum foil is laminated with paper by extrusion lamination using a polyolefin-based heat-adhesive resin and an easy peel sealant layer is laminated as the innermost layer on the other side. Formed,
At one end of the outer peripheral edge of the lid body is provided with a hot water outlet opening knob for opening a hot water outlet for discharging hot water poured into the container,
In the region near the end portion of the lid where the hot water cut opening is provided, an opening structure for opening the hot water cut is formed on the back side of the lid from the inner easy peel sealant layer to the paper layer. A frame-shaped half-cut line for cutting a hot water cut at a depth entering, and a horizontally-long V-shaped half-cut line having a wide angle extending on both sides to the depth between the frame-shaped half-cut line and the knob And
The lid includes a paper layer on a side in contact with the polyolefin-based heat-adhesive resin layer including at least the horizontally long V-shaped half-cut line portion to the frame-shaped half-cut line portion. An easily peelable varnish layer that is pre-pattern-coated is provided in the shape of the entire body width, and the inside of the frame-shaped half-cut line leaving a slightly intrusive part and removing the inside,
Further, on the surface of the easy peel sealant layer of the innermost layer of the lid, a plastic mesh is provided on the outer peripheral edge of the frame-shaped half-cut line so as to cover a portion surrounded by the frame-shaped half-cut line. A lid body having a hot water cutting function characterized by being attached by heat bonding. 2. The lid body having a hot water cutting function according to claim 1, wherein the plastic mesh is a quadrilateral mesh including a square or rhombus having a side length of 1 to 4 mm. A hot water inlet opening tab for opening a hot water inlet for injecting hot water into the container is provided at the end of the lid opposite to the end provided with the hot water opening opening knob. The lid body having a hot water draining function according to claim 1 or 2, wherein the lid body has a hot water draining function.

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