JP2008174278A - Container for processed food - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container for a processed food capable of preventing a container main body from swelling out in a Dharma shape when the processed food with a high temperature is filled therein. <P>SOLUTION: Long side step difference parts 221 and 222 opposing to each other in the longitudinal direction of the container main body 2, long side body parts 231 and 232 continuous to them, and lid body step difference parts 421 and 422 opposing to each other in the longitudinal direction of a lid body 4, are so composed as to be respectively curved in the inward direction. When the container main body 2 is covered with the lid body 4 by folding it from a hinge part 5, a main body flange part 21 and a main body step difference part 22 of the container main body 2 and a lid body flange part 41 and a lid body step difference part 42 of the lid body 4 are so formed that they are respectively brought into close contact with each other. When the processed food fills the container main body 2, the body parts 231 and 232 of the container main body 2 can be prevented from swelling outward by the shapes of these long side step difference parts 221 and 222. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a container for processed food, and more particularly, to a container for processed food for storing cooked rice, bento, cooked noodles, dumplings, grilled food, prepared dishes, natto and the like.

  Usually, a container with a lid made of plastic is used as a container for storing cooked rice, bento, cooked noodles, prepared dishes, and the like. Plastic light weight food containers with lids that are on the market recently are called food packs, PP (polypropylene), PSP (polystyrene pepper: Styrofoam), OPS (biaxially oriented polystyrene), PP filler (mixed with calcium carbonate) It is manufactured by vacuum forming using a synthetic resin sheet such as HIPS (impact resistant polystyrene).

In this type of container, in order to improve the sealing between the container body and the lid, the processed food container provided with stepped steps on the side wall near the opening of the container body and the ceiling of the lid is the main container. The inventor has already proposed (refer to Utility Model Registration No. 3125656).
Utility Model Registration No. 3125656

  The container for processed goods described in Utility Model Registration No. 3125656 has a high sealing property between the container main body and the lid. After the container is filled with processed food, the container is sealed when the lid is closed. There is an advantage that it can maintain moderate humidity without drying the food even if it is put in the refrigerator, but if you pack food with high temperature such as rice immediately after cooking or noodles immediately after cooking, There was a drawback that the container softened and the side wall of the container swelled in a daruma shape.

  The first object of the present invention is to provide a processed food container in which the side wall of the container body does not swell even when the container is filled with processed food having a high temperature.

  A second object of the present invention is to provide a processed food container in which the container lid can be used as a saucer for a plurality of types of seasonings.

  The processed food container of the present invention is a processed food container comprising a substantially rectangular container body having an open upper surface and a lid body provided continuously through a thin hinge provided on one side of the container body. The container body includes a main body flange portion provided around the opening of the container main body, a main body step portion that is stepped inwardly provided continuously to the main body flange portion, and the main body step portion. A container body part provided continuously to the container body part and a container bottom part provided continuously to the container body part, the lid body protruding from the lid body flange part and the lid body flange part. It comprises a step-shaped lid step portion and a dish-shaped ceiling provided continuously to the lid step portion, and further the main body step portion facing in the longitudinal direction of the container body, the container body portion following the main body step portion, and the above Each lid step in the longitudinal direction of the lid When the lid is bent from the hinge part and covered with the opening of the container body, the body flange part, the body step part of the container body and the lid body of the lid body The flange portion and the lid step portion are formed so as to be in close contact with each other.

  The bottom surface of the container bottom of the container body is formed to be curved to a middle height. By adopting this structure, moisture contained in the processed food is collected in the peripheral portion of the container, and the bottom surface of the processed food is not excessively wetted and the texture and flavor are not impaired. This structure is optimal for baking and dumplings.

  The dish-shaped ceiling of the lid is partitioned by at least one partition wall, and can be used as a saucer for at least two seasonings when the lid is opened.

  When the lid is in the closed state, the seasoning container can be accommodated in the recessed groove formed on the back side of the partition wall. Therefore, the width of the partition wall is slightly wider so that the seasoning container can be accommodated.

  The hinge part is provided with two cutting perforations parallel to each other with a ridge having a triangular cross section. Therefore, when the lid is closed, the lid can be bent sharply along the perforation, so that the flange portion of the lid can overlap with the flange portion of the container body without any gap, thereby improving adhesion.

  One of the cutting perforations is a rough perforation and the other is a fine perforation. Coarse perforations are easy to cut, and it is convenient to use the lid separately from the container body as needed when eating.

  The container body and the lid are preferably formed of a heat-retaining or heat-resistant synthetic resin material. Polystyrene paper is preferably used as the heat-retaining synthetic resin material. As the heat-resistant synthetic resin material, a polypropylene resin or a polypropylene filler (a material obtained by adding about 30% calcium carbonate to polypropylene) can be preferably used.

  Since the container for processed food of the present invention is manufactured by vacuum molding, other synthetic resin materials, that is, synthetic resin materials that are thermoplastic and have no harmful effects on food hygiene, such as OPPS (biaxially oriented polystyrene), HIPS (resistance to resistance). Impact polystyrene), A-PET (polyethylene terephthalate), transparent PS (polystyrene butadiene) and the like can be used.

  The container main body and the lid of the present invention can be integrally formed by vacuum forming using the above synthetic resin sheet.

(1) Since the processed food container of the present invention is configured so that the stepped portion of the container body and the stepped portion of the lid are in close contact with each other, when the processed food is filled, the lid is closed. The step portion of the container is in close contact with the step portion of the container body, and the frictional resistance prevents the lid from being naturally half-opened. Therefore, it is not necessary to stop the lid with a staple or an adhesive tape after the lid is closed. In addition, since the hermeticity is high, there is an advantage that the side dish soup is difficult to leak.

(2) The processed food container of the present invention has a high adhesion between the lid and the container body, and as a result has a high sealing performance. Appropriate humidity can be maintained, and the texture and flavor of processed foods are not impaired.

(3) Since the processed food container of the present invention is provided with stepped portions on each of the container main body and the lid, these stepped portions act as ribs to increase the rigidity of the container and the lid, When the container is covered with a lid, the two jointly increase the rigidity in the container peripheral direction, so that when the container is held by hand, the container will not be dented or deformed.

(4) The processed food container of the present invention includes a main body stepped portion in the longitudinal direction of the container main body, a container body portion following the main body stepped portion, and a lid stepped portion in the longitudinal direction of the lid body each in a bow shape. Because it is curved in the direction, the resistance to the force acting in the direction in which the container body swells outwards becomes stronger, and even when warm processed food is filled, the container body swells in a daruma shape Can be prevented.

(5) Since the processed food container according to the present invention has at least one partition wall for partitioning the dish-shaped ceiling portion of the lid, the dish-shaped ceiling portion is used as a saucer for two or more seasonings. In addition, the partition wall acts as a rib structure and can increase the rigidity of the lid.

(6) Since the processed food container of the present invention is provided with at least one partition wall for partitioning the dish-shaped ceiling portion of the lid, the groove formed on the back side of the partition wall is a storage place for the seasoning container Can be used as

(7) Since the processed food container of the present invention is provided with two perforations parallel to the hinge portion, when the lid is closed, the perforations function as folds and bend in two stages. The body rotates 180 degrees, and the flange portion of the lid body and the flange portion of the container main body are brought into close contact with each other, thereby improving the adhesion between the lid body and the container main body. Moreover, a lid body can be easily cut | disconnected from a perforation and a lid body can be used as a saucer for seasonings.

(8) When the processed food container of the present invention is prepared using polystyrene paper, the airtightness and the heat retaining property are enhanced. Therefore, when used as a warm side dish or processed food, for example, a takoyaki, yakisoba or lunch box container, it is difficult to cool and can be used on the table as it is warm. Moreover, since the moisture retention is also high, even if the cooked rice is put and stored in the refrigerator, the water content of the rice can be stored in a state where it hardly changes for 3 days to 1 week.

(9) When the processed food container of the present invention is prepared using a polypropylene filler, the heat resistance becomes high, so that the food can be heated in a range with the food in it.

  The best mode for carrying out the invention is illustrated by the following examples.

(Example 1)
As shown in FIG. 1 (plan view) and FIGS. 2 to 4 (longitudinal sectional views), the container 1 for processed food according to the present invention is a vacuum forming method in which the container body 2 and the lid body 4 are connected via a hinge portion 5. It is integrally molded by. Wide flange portions 21 are provided on the four circumferences of the opening 20 of the container body 2. A main body step portion 22 is provided inside the container between the flange portion 21 and the container body portion 23.

  Details of the stepped portion 22 of the container body 2 and the stepped portion 42 of the lid 4 are shown in FIGS. 2 and 6. That is, the main body step portion 22 includes a substantially vertical first side wall portion 25 following the flange portion 21, a substantially horizontal first flat portion 26 subsequent thereto, and a second side wall portion 27 inclined inward thereafter, and Continuing from the second side wall portion 27, the container body portion 23 includes a second flat portion 28.

  The container body portion 23 has an inverted rectangular trapezoidal shape, and a large number of vertical ribs 31 are provided on its side surface. The container bottom portion 24 is curved at a medium height, and the bottom portion 24 is provided with a large number of transverse ribs 33 extending from the longitudinal ribs 32 and the longitudinal ribs 31. If the bottom 24 is configured to be slightly curved to a middle height in this way, even if liquid juice or the like of the processed food contained in the container oozes out, it is discharged in four rounds without collecting in the center of the bottom, so that the bottom of the processed food is It is possible to avoid losing quality such as being excessively wet and sticky.

  The lid body 4 has a four-sided lid flange portion 41, a lid step portion 42 provided continuously to the lid flange portion 41, and a dish-shaped ceiling portion provided continuously to the lid step portion 42. 43. As shown in FIG. 2, the lid stepped portion 42 is formed in a first side wall portion 45 of the lid body that is refracted upward from the flange portion 41, and inwardly following the first side wall portion 45. A first flat portion 46 of the lid body that is refracted, a second side wall portion 47 of the lid body that is refracted obliquely upward following the first flat portion 46, and the second side wall portion. And the second flat part 48 of the lid body following the above.

  When the lid 4 is bent from the hinge portion 5 and put on the opening 20 of the container main body 2, as shown in FIG. 6, the main body flange portion 21, the first side wall portion 25 of the container main body 2, the first of the main body 2 The flat part 26, the second side wall part 27, the second flat part 28, the lid flange part 41 of the lid body 4, the first side wall part 45 of the lid body, the first flat part 46 of the lid body, and the lid body The second side wall portion 47 and the second flat portion 48 of the lid are formed in close contact with each other.

  Two perforations 51 and 52 are provided on the hinge portion 5 in parallel with a ridge portion 53 having a triangular cross section interposed therebetween. The perforation 51 is coarse and the perforation 52 is fine. Since the perforated one is easier to cut, the lid 4 can be easily separated from the container body 2 by the perforation 51 when the processed food container is opened, and the lid does not get in the way when eating. Convenient.

  When the cover body 4 is put on the container body 2, as shown in FIG. 5, the cover body 4 is sharply bent in two stages from the perforation 51 and the perforation 52, and is rotated 180 degrees so that the cover flange portion 41 is attached to the main body. It is possible to closely contact the flange portion 21.

  The ceiling portion 43 of the lid body 4 is divided into three by two partition walls 44 and 44, and three tray portions 431, 432, and 433 are formed. When the lid 4 is opened, the saucer portions 431, 432, and 433 can be used as saucers for different seasonings such as soy sauce, sauce, and ketchup. The partition walls 44 and 44 act as ribs of the lid body 4 and can increase the rigidity of the lid body 4 against bending and impact.

  As shown in FIG. 3, the ceiling portion 43 of the lid 4 inevitably has concave grooves 441 and 441 formed on the back surfaces of the two partition walls 44 and 44. A tube-shaped seasoning container can be accommodated in the concave groove 441. Therefore, the width of the partition wall 44 needs to be wide enough to accommodate these containers.

  The step portions 221 and 222 on the long side of the container body 2 are curved in an arc shape toward the inside of the container. Further, the long side body portions 231 and 232 following the step portions 221 and 222 are also curved in a bow shape. When this container is filled with warm food, the container body 2 may swell in a daruma shape, but by curving the long side step portions 221 and 222 and the long side trunk portions 231 and 232 inward in an arcuate shape. The rib structure of the long side step portion and the shape curved inward act to prevent the long side body portions 231 and 232 from bulging outward.

  In accordance with the shape of the long side stepped portions 221 and 222 of the container body 2, the long side stepped portions 421 and 422 of the lid body 4 are also curved inwardly.

(Example 2)
FIG. 7 shows a container for processed food according to another embodiment of the present invention. The partition 4 is not provided on the dish-shaped ceiling portion 434 of the lid 4. Moreover, as shown in FIG. 8, the depth of the dish of the dish-shaped ceiling part 434 is made slightly shallow. This container is particularly suitable for commercial natto containers. When producing natto, put the boiled boiled beans in a container, mix the natto bacteria, close the lid, ferment for a certain period to change to natto, and send it to the market.

  In a conventional container, even if the lid is placed on the container body, the lid is half-opened due to the elasticity of the hinge portion. In the container according to the present invention, the friction of the stepped portion 22 of the container main body 2 and the stepped portion 42 of the lid body 4 and the two perforations 51 and 52 are inserted in the hinge portion 5 so that the lid body 4 bends sharply. The body 4 is in close contact with the container body 2, and the lid body 4 does not open halfway even if the hand is released after the lid is closed. Therefore, the work efficiency when the lid 4 is thermally welded to the container body 2 can be increased.

  Further, when the lid 4 is put on the container body 2, the dish-shaped ceiling portion 434 protrudes into the container body 2 by the step portion 42, coupled with the shallow depth of the dish-shaped ceiling portion 434, The dish-shaped ceiling portion 434 enters the container body, and its surface 435 is lightly pressed on the filled boiled beans, and there is an effect that it is possible to omit the thin paper that has been used to prevent drying of the surface of the boiled beans.

  Even in this container, the step portions 221 and 222 on the long side of the container body 2 are curved in an arc shape toward the inside of the container. Further, the long side body portions 231 and 232 following the step portions 221 and 222 are also curved in a bow shape. With this structure, when the boiled beans with a high temperature are filled in this container, the container body 2 can be prevented from bulging in a daruma shape.

The top view of the container for processed foods of this invention. The longitudinal cross-sectional view by the AA line of FIG. The longitudinal cross-sectional view by the BB line of FIG. The longitudinal cross-sectional view by CC line of FIG. The partial side view which shows the state which closed the cover body. The fragmentary longitudinal cross-section which shows the state which closed the cover body. Plan view of processed food container of another embodiment Longitudinal sectional view taken along line D-D in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Processed food container 2 Container main body 21 Main body flange part 22 Main body step part 221 Long side step part 222 Long side step part 23 Container body part 231 Long side trunk part 232 Long side trunk part 24 Container bottom part 4 Cover body 41 Cover body flange Part 42 Lid step part 421 Long side step part 422 Long side step part 43 Ceiling part 431 Receptacle 432 Receptacle 433 Receptacle 44 Bulkhead 441 Concave groove 5 Hinge part 51 Coarse perforation 52 Fine perforation

Claims (11)

  A processed food container comprising a substantially rectangular container body having an open upper surface and a lid body provided continuously through a thin hinge provided on one side of the container body, wherein the container body is the container A main body flange portion provided around the opening of the main body, a main body stepped portion stepped inwardly provided continuously to the main body flange portion, and a container body provided continuously to the main body step portion And a container bottom portion continuously provided on the container body portion, the lid body is a lid flange portion, a protruding stepped lid step portion provided continuously on the lid flange portion, and It consists of a dish-shaped ceiling portion provided continuously to the lid stepped portion, and further, the main body stepped portion opposite to the longitudinal direction of the container body, the container body portion following it, and the longitudinal direction of the lid facing each other. The lid steps are curved inwardly like bows When the lid body is bent from the hinge portion and covered with the opening of the container body, the body flange portion of the container body, the body step portion, the lid flange portion of the lid body, the lid step portion, Processed food containers characterized by being formed so as to be in close contact with each other.   The container for processed food according to claim 1, wherein the container bottom portion of the container main body is formed to be curved to a middle height.   The dish-shaped ceiling portion of the lid body is partitioned by at least one partition wall, and a saucer portion that can be used as a saucer for at least two seasonings when the lid body is opened is formed. Item 1. A processed food container according to Item 1.   The processed food container according to claim 3, wherein the seasoning container can be accommodated in a recessed groove formed on the back side of the partition wall when the lid is closed.   The processed food container according to claim 1, wherein two cutting perforations parallel to the hinge portion are provided.   6. The processed food container according to claim 5, wherein one of the cutting perforations is a rough perforation and the other is a fine perforation.   The container for processed food according to claim 1, wherein the container body and the lid are formed of a heat-retaining synthetic resin material.   8. The processed food container according to claim 7, wherein a polystyrene paper is used as the heat-retaining synthetic resin material.   The container for processed food according to claim 1, wherein the container body and the lid are formed of a heat-resistant synthetic resin material.   10. The processed food container according to claim 9, wherein a polypropylene resin or a polypropylene filler is used as the heat-resistant synthetic resin material.   The container for processed food according to any one of claims 1 to 10, wherein the container body and the lid are integrally formed by a vacuum forming method.