JP5255410B2 - Lid and instant food container using the same - Google Patents

Description

  The present invention relates to a lid member attached to an opening of a cup-shaped container used for food.

  Traditionally, food such as rice balls and bread has been sold in the state of being individually packaged in plastic packaging films and bags. When eating, the outer packaging is opened and the contents of rice balls and bread are placed directly on the table. Although it is unsanitary when placed, dishes are often not prepared at work or outdoors, so you can eat while holding them by hand or place food on a table via a packaging film or packaging bag.

  However, there is a problem that it is difficult to take drinks and other foods while holding the food by hand. Further, since the packaging film and the packaging bag are broken when the food is taken out, the packaging film and the packaging bag may not be used as a sheet for placing the food on the table. Furthermore, a part of food may adhere to the back surface of the packaging film or the packaging bag, and there is a possibility that the table or the hand is soiled.

By the way, as shown in Patent Documents 1 and 2, a lid made of a synthetic resin sheet is attached to the opening of the cup-shaped container for instant foods in order to seal the container after filling the contents. . In supermarkets and convenience stores, many users purchase instant foods such as noodles and soups together with other foods such as rice balls and bread. Therefore, it is conceivable to use the lid attached to the instant food as a dish such as a rice ball or bread.
Japanese Utility Model Publication No. 5-29976 JP-A-9-48450

  However, instant foods are usually cooked after removing the lid and pouring hot water into the container and then putting the lid on again for a predetermined time, so water droplets due to condensation of water vapor adhere to the back of the lid. doing. Therefore, if rice balls or bread are placed on the back side of the lid, the flavor will be impaired. In addition, dust and dirt may adhere to the surface of the lid member. If it is placed on the surface side of the lid member, it is unsanitary and the back side is down, so that the table gets wet with water droplets.

  In view of the above problems, the present invention provides a lid that can suppress adhesion of water droplets to food when used as a dish on which other food is placed after cooking of instant food, and an instant food container using the same. The purpose is to do.

  In order to achieve the above object, the present invention has a top surface portion, a side surface portion formed integrally with the periphery of the top surface portion, and an annular engagement groove formed between the side surface portion and the top surface portion. And a lid made of synthetic resin to be attached to the opening of the container body containing the instant food to be cooked for a predetermined time in a substantially sealed state after pouring hot water, the predetermined area of the top surface portion Inside, a rib protruding at a predetermined interval is formed on the inner surface side of the container body.

  According to the present invention, in the lid member configured as described above, the height of the rib is 3 mm or more.

  According to the present invention, in the lid member configured as described above, a tip end portion of the rib is a curved surface.

  According to the present invention, in the lid member configured as described above, the height of the rib is 6 mm or less.

  Further, the present invention is characterized in that, in the lid member having the above-described configuration, irregularities are formed at the tip portion of the rib.

  Moreover, this invention is a container for instant foods with which the cover material of the said structure was mounted | worn.

  According to the 1st structure of this invention, when another foodstuff is put on the back surface of a cover material, the bottom face of foodstuff is not directly in contact with a top | upper surface part, but is supported only by the front-end | tip part of a rib. Therefore, it is possible to suppress the attachment of water droplets to the food when the lid removed after cooking the instant food is used as a dish.

  Moreover, according to the 2nd structure of this invention, when the lid | cover material is used as a rice ball dish by making the height of a rib 3 mm or more in the lid | cover material of the said 1st structure, a rice ball is coat | covered. Even if the seaweed bends, water droplets that have condensed on the top surface will not adhere to the seaweed.

  Moreover, according to the 3rd structure of this invention, in the lid | cover material of the said 1st or 2nd structure, by forming the front-end | tip part of a rib into a curved surface shape, it is with the food supported by the front-end | tip part of a rib. A contact area can be made small and the thinning of the front-end | tip part at the time of vacuum forming can also be suppressed.

  Moreover, according to the 4th structure of this invention, in the cover material of the said 2nd or 3rd structure, a rib width also becomes below a predetermined width by making the height of a rib 6 mm or less. Therefore, it is possible to suppress an increase in the contact area between the tip of the rib and the seaweed due to a decrease in the curvature of the tip of the rib as the rib width increases.

  In addition, according to the fifth configuration of the present invention, in the lid member having any one of the first to fourth configurations, by forming irregularities on the tip portion of the rib, the rib tip portion and the food come into contact with each other. Since the area becomes smaller, adhesion of water droplets to food can be more effectively suppressed.

  Further, according to the sixth configuration of the present invention, by using the instant food container equipped with the lid material of any one of the first to fifth configurations, the lid material removed after cooking the instant food is removed. When used as a dish for food such as rice balls and bread, the flavor of the food can be used without sacrificing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of an instant food container equipped with the lid of the present invention. The instant food container 1 is composed of a cup-shaped container body 2 and a lid member 3 attached to the opening of the container body 2.

  The container body 2 is formed of a laminated sheet in which a barrier layer such as an aluminum foil and a thermoplastic resin layer as an innermost layer are sequentially laminated on the back surface of a paper layer as a base material, and the periphery of the opening is curled outward. A mouth edge 2a is formed. In addition, the container main body 2 integrally formed with expanded polystyrene or high impact polystyrene can also be used. The lid member 3 is integrally formed by a vacuum forming method using a synthetic resin sheet.

  The container body 2 is filled with instant food 4. When cooking the instant food 4, the lid 3 is first removed. At this time, if there is a seasoning or the like enclosed with the instant food 4, it is taken out and put into the container body 2 at a predetermined timing before pouring hot water or just before eating. Next, hot water is poured and the lid 3 is mounted again. And after leaving for a fixed time, the lid | cover material 3 is removed and the instant food 4 cooked is eaten.

  FIG. 2 is a plan view of the lid according to the first embodiment of the present invention as viewed from the back side (inner side of the cup-shaped container), and FIG. 3 is a side sectional view of the lid (cross section AA ′ in FIG. 2). ). The lid 3 is composed of a circular top surface portion 5 and a side surface portion 6 that rises from the periphery of the top surface portion 5. Between the top surface portion 5 and the side surface portion 6, the rim portion 2 a ( An annular engagement groove 7 is formed to engage with (see FIG. 1). A plurality of projections 8 are formed on the inner peripheral surface of the side surface portion 6 at equal intervals over the entire circumference of the engagement groove 7 (here, six locations). The container body 2 and the lid member 3 are surely engaged with each other by sandwiching the mouth edge 2a therebetween. In addition, the top surface portion 5 is formed with ribs 9 protruding to the back surface side (upward direction in FIG. 3).

  The material of the lid 3 is polystyrene, high impact polystyrene, styrene-butadiene copolymer, styrene-butadiene-acrylonitrile copolymer, styrene-acrylic acid copolymer, styrene-methacrylic acid copolymer, styrene-anhydrous maleic acid. Styrene resins such as acid copolymers, low-density polyethylene, high-density polyethylene, polypropylene, propylene-ethylene copolymers, propylene-butene copolymers, polyolefin resins such as polybutene, polyesters such as polyethylene terephthalate (PET) Resins, polyvinyl chloride, nylon and the like can be mentioned. These are used alone or as a mixture. Moreover, the printing layer which consists of desired printing patterns, such as a character, a figure, a symbol, a pattern, can also be formed in the sheet | seat surface made from a synthetic resin.

  FIG. 4 is a side sectional view showing a state in which the lid 3 removed after cooking the instant food is used as a rice ball dish. As described above, when cooking the instant food 4, hot water is poured into the container body 2 to attach the lid member 3, so that water droplets with water vapor condensation adhere to the back surface of the removed lid member 3. . Here, since the rib 9 is formed on the back surface side of the top surface portion 5 in the lid material 3 of the present invention, when the rice ball 10 is placed on the back surface of the lid material 3 as shown in FIG. The bottom surface does not directly contact the top surface portion 5 and is supported only by the tip portion of the rib 9.

  Although water droplets are also attached to the tip of the rib 9, the contact area between the rib 9 and the rice ball 10 is small, so the wetness of the seaweed covering the rice ball 10 is suppressed compared to the conventional configuration without the rib 9. Is done. Therefore, the lid 3 can be used as a dish in a sanitary manner without impairing the flavor of the rice ball 10.

  FIG. 5 is a partially enlarged view of the vicinity of the rib 9 in FIG. As shown in FIG. 5, the height h of the rib 9 needs to be set to such a height that water droplets condensed on the top surface portion 5 do not adhere to the nori 11 even if the laver 11 covering the rice ball 10 is bent. . Therefore, the height h of the rib 9 is preferably 3 mm or more.

  Moreover, when the front-end | tip part (upper end part) of the rib 9 is flat, the contact area of the front-end | tip part of the rib 9 and the laver 11 becomes large, and the laver 11 becomes easy to get wet. Further, the tip portion becomes thin during vacuum forming, and the strength is lowered and the appearance is also deteriorated. On the other hand, in vacuum forming, there is a manufacturing restriction that the tip of the rib 9 that is actually formed has a curved surface instead of an acute angle even if the tip of the rib 9 has an acute angle on the mold. Therefore, as shown in FIG. 5, it is preferable to reduce the contact area by forming the tip of the rib 9 in a curved shape.

  Here, it is necessary to increase the rib width w1 as the height h of the rib 5 increases. However, as the rib width w1 increases, the curvature of the tip of the rib 9 decreases and the contact area with the laver 11 increases. Therefore, the height h of the rib 9 is preferably 3 mm or more and 6 mm or less.

  Moreover, when the space | interval w2 of the rib 9 becomes large too much, the laver 11 will become easy to contact. Further, when the rice balls 10 that have been reduced in size are placed, they are not supported by the ribs 9 and may fall between the ribs 9. On the other hand, if the interval w2 between the ribs 9 is too narrow, the contact area between the tip of the rib 9 and the laver 11 will be widened. Accordingly, the interval w2 between the ribs 9 is preferably set according to the height h of the ribs 9 and the size of the rice ball 10. For example, when the height h of the rib 9 is 3 mm to 6 mm, the interval w2 between the ribs 9 is appropriately about 10 to 12 mm.

  In order to place the rice ball 10 stably, it is preferable to set a region (area) for forming the rib 9 in consideration of the ground contact area of the rice ball 10. For example, when the rice ball 10 is placed vertically as shown in FIG. 4, the rectangular bottom surface may be formed in a supportable region, and when the rice ball 10 is placed horizontally, a triangular side surface may be formed in a supportable region. .

  FIG. 6 is a plan view of the lid member according to the second embodiment of the present invention as viewed from the back side, and FIG. 7 is a side sectional view of the lid member (BB ′ section of FIG. 6). In the present embodiment, a large number of irregularities 9 a are formed at the tip (upper end) of the rib 9. Since the configuration of other parts is the same as that of the first embodiment, description thereof is omitted.

  According to this configuration, when the rice ball 10 is placed on the back surface of the lid 3, the contact area between the tip of the rib 9 and the rice ball 10 becomes smaller, so the wetting of the laver 11 covering the rice ball 10 is more effective. Can be suppressed. The unevenness 9a can be easily formed by providing an uneven shape on the mold of the lid member 3 used in vacuum forming. Moreover, there is no restriction | limiting in particular in the magnitude | size of the unevenness | corrugation 9a, For example, even if a fine unevenness | corrugation is formed in the front-end | tip part of the rib 9 by blasting or knurling a metal mold | die, the effect which suppresses the wetness of the laver 11 Can be expected.

  In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the planar shape of the rib 9 is not particularly limited, and may be a dot-shaped rib as shown in FIG. 8 or a spiral-shaped rib as shown in FIG. Moreover, it is also possible to give designability by combining ribs having various shapes. Moreover, you may manufacture the cover material 3 by methods other than the vacuum forming method. Moreover, although the said each embodiment demonstrated the case where the rice ball 10 was put on the back surface of the cover material 3, foods other than rice balls, such as bread and confectionery, can also be put. In that case, preferable ranges such as the height h of the rib 9 and the interval w2 also change.

  When ribs were provided on the back of the lid, the relationship between the shape and height of the ribs and the wetness of the rice balls were investigated. As a test method, three types of lid members 3 on which line-shaped ribs 9 as shown in FIG. 2 were formed were manufactured by changing the rib height h (Test Examples 1 to 3). Moreover, the lid | cover material 3 in which the dot-shaped rib 9 as shown in FIG. 8 was formed was produced (Test Example 4). The lid material 3 was produced by vacuum forming using a polystyrene sheet having a thickness of 0.25 mm, and silicon was applied to the surface of the lid material 3 to make it anti-fogging.

  And after pouring hot water into the cup-shaped container containing the instant noodles, each lid | cover material 3 was mounted | worn with the opening part. After 3 minutes, the lid 3 was removed and placed with the back side up, and rice balls were placed vertically on the ribs 9 as shown in FIG. The results are shown in Table 1. In Table 1, the case where the parts other than the ribs were considerably wet was marked with x, the case where the parts other than the ribs were slightly wet was marked with Δ, and the case where the parts other than the ribs were almost wet was marked with ◯.

  As is clear from Table 1, in the case of Test Examples 1 to 4 in which line-shaped ribs were formed, in Test Example 1 where the height of the ribs was 2 mm, the laver was also in contact between the ribs due to the bending of the laver. The parts other than those in contact with were also very wet. On the other hand, in Test Examples 2 to 4 where the height of the rib was 3.3 mm, 4.1 mm, and 6.0 mm, the seaweed was hardly moistened except for the portion in contact with the rib.

  In the case of Test Example 5 in which dot-shaped ribs were formed, the seaweed was slightly moistened at portions other than the ribs even when the rib height was 3.2 mm. This is thought to be because dot-shaped ribs bite into the bottom of the rice balls, and the laver around the ribs contacted the top surface.

  From the above results, it was confirmed that when the rice balls were placed vertically on the cover material 3, the formation of ribs having a height of 3 mm or more can effectively suppress the wetting of the laver. In addition, since the pressure applied to each rib is reduced when the rice ball is placed horizontally with the side face down, even in the lid material of Test Example 5 in which dot-shaped ribs are formed, the bite of the ribs into the rice ball is suppressed, and nori It is considered that the wetness of the water is reduced.

  The present invention, after pouring hot water, can be used as a lid that is attached to the opening of the container body containing the instant food to be cooked for a predetermined time in a substantially sealed state, on the top surface of the lid, Ribs that protrude at predetermined intervals are formed on the inner surface side of the container body.

  As a result, when the lid material removed after cooking the instant food is used as a dish, the adhesion of water droplets to the food placed on the back side of the lid material is suppressed, so that the flavor of the food is not impaired, and hygiene A lid that can be used as a typical dish can be provided.

  Further, by setting the height of the ribs to 3 mm or more, it is possible to effectively prevent the seaweed from covering the rice balls, particularly when used as a rice ball dish. Furthermore, by making the tip of the rib a curved surface, the contact area between the tip of the rib and the food can be reduced. At this time, if the height of the rib is set to 6 mm or less, a decrease in the curvature of the tip portion accompanying an increase in the rib width is suppressed, so that the contact area can be maintained below a predetermined value.

  Furthermore, by forming irregularities at the tip of the rib, the contact area between the tip of the rib and the food becomes smaller, and the adhesion of water droplets to the food can be more effectively suppressed.

  Further, by using the lid material of the present invention, it is possible to provide a highly convenient instant food container provided with a lid material that can be used in a sanitary manner as a substitute for a dish without impairing the flavor of food.

These are the schematic perspective views of the container for instant foods with which the lid material of the present invention was equipped. These are the top views which looked at the cover material of 1st Embodiment of this invention from the back surface side. These are side surface sectional drawings of the cover material of 1st Embodiment. These are side surface sectional drawings which show the state which used the lid | cover material removed after cooking of instant food as a plate of rice balls. These are the elements on larger scale near the rib 9 in FIG. These are the top views which looked at the lid | cover material of 2nd Embodiment of this invention from the back surface side. These are side surface sectional drawings of the cover material of 2nd Embodiment. These are the top views which looked at the cover material of this invention in which the dot-shaped rib 9 was formed from the back surface side. These are the top views which looked at the cover material of this invention in which the spiral-shaped rib 9 was formed from the back surface side.

Explanation of symbols

1 Instant food container 2 Container body 2a Mouth edge (opening)
DESCRIPTION OF SYMBOLS 3 Cover material 4 Instant food 5 Top surface part 6 Side surface part 7 Engagement groove 8 Protrusion 9 Rib 9a Concavity and convexity 10 Rice ball 11 Nori h Rib height w1 Rib width w2 Rib space | interval

Claims (5)

A top surface portion, a side surface portion formed integrally with the periphery of the top surface portion, and an annular engagement groove formed between the side surface portion and the top surface portion,
After pouring hot water, it is a lid made of synthetic resin that is attached to the opening of the container body containing instant food to be cooked for a predetermined time in a substantially sealed state,
A lid member in which ribs protruding at predetermined intervals on the inner surface side of the container main body are formed on the top surface portion, and irregularities are formed on the tip portions of the ribs .   The lid according to claim 1, wherein a height of the rib is 3 mm or more.   The lid member according to claim 1 or 2, wherein a tip portion of the rib is a curved surface.   The lid according to claim 2 or 3, wherein a height of the rib is 6 mm or less. An instant food container to which the lid according to any one of claims 1 to 4 is mounted .

Images