TW200836643A - Tray for frozen food and frozen food package - Google Patents

Abstract

Provided are a frozen food tray enabling proper thawing of frozen food such as frozen sushi placed thereon and a frozen food package using the frozen food tray. The frozen food tray (30) has first intermediate surfaces (33A), a second intermediate surface (33B), recesses (32A, 32B) recessed from the intermediate surfaces (33A, 33B), a surrounding wall (34) raised from the peripheral edges of the intermediate surfaces (33A, 33B), and a flange part (35) forming the upper end part of the surrounding wall (34). The number of the recesses (32) is eight that are arranged in a matrix having two rows each having four of the eight with long sides of the recesses arranged in parallel to each other. The four recesses (32A) having low bottom surfaces and located at both ends of the rows are recessed from the first intermediate surfaces (33A). The four recesses (32B) having high bottom surfaces and located at the center of the rows are recessed from the second intermediate surfaces (33B). The bottom surfaces of the high-bottom-surface recesses (32B) are higher in level than the bottom surfaces of the low-bottom-surface recesses (32A). Microwave passes through the gap under the high-bottom-surface recesses (32B) to heat the recesses (32B).

Description

200836643 IX. Description of the Invention [Technical Field of the Invention] The present invention relates to a tray for storing frozen food, and the use of the cold and frozen food package. [Prior Art] Japanese Unexamined Patent Publication No. Hei 08-180790, JP-A-98888 Japanese Laid-Open Patent Publication No. Hei 11-251054, Japanese Laid-Open Patent Publication No. Hei No. Hei. No. Hei. All of these well-known techniques are all frozen in a flat-shaped defrosting thin-turned sushi, and then irradiated with microwaves. However, the thawing of frozen sushi is best carried out in such a way that the rice is thawed to the right and the ingredients are cooled. In the above prior art, the method is to adjust the microwave intensity distribution of the food material to microwave and heat the rice. However, for defrosting all the frozen sushi with the flat branch, it is not easy to make the rice into an appropriate temperature and the food is cooled to be thawed. There are problems with even the ingredients being warmed up. The tray for the change | is described in WO2005/007532. [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei 9-98888 (Patent Document 3) Japanese Patent Application Laid-Open No. Hei 9-98888

[Surgery, ping 9- = special opening E E E bulletin uploading t temperature person than j sho on the way I this point 200836643 Patent Document 4: Japan Special Kaismos No. Gazette Patent Document 5: Japan Special Kaiping 丨丨_2 5 1 0 5 No. 4, 4, 5, 4, 4, 5, 4, 4, 4, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1 The purpose of the invention is to provide a tray for frozen foods which is suitable for defrosting frozen foods such as divisions, and a frozen food package for making trays. The tray for frozen food according to the first aspect is a tray for frozen food having a concave portion of the product, wherein the tray comprises: a surface layer made of synthetic resin; and a synthetic tree and between the surface layer and the inner layer, absorbed Microlayer. The tray for frozen foods according to the second aspect is a tray for frozen foods in which the first surface layer and the inner layer are made of polypropylene or polystyrene, and the heat generating layer contains at least carbon black and ferrite. The tray for frozen food according to the fourth aspect is a tray for a frozen food having a plurality of recesses and a heat generating layer provided at least in the recessed portion, wherein the bottom surface is higher than the bottom surface of the other recess. The frozen food tray of the fifth aspect is the inner layer of the frozen food for storing the frozen food for the frozen food, and the upper layer of the frozen food for the frozen food; Or one of the second forms. ‘Used to store frozen foods. Absorb microwaves to generate heat. At least one recess is a bottom recess. In the fourth embodiment, each of the recesses -5 - 200836643 has a side wall in the longitudinal direction, a side wall in the short side direction, and a bottom surface. In the fifth aspect, the tray for a frozen food according to the fifth aspect is characterized in that a plurality of concave portions are arranged in a row in a space between the side walls of each of the longitudinal sides, and are arranged in a plurality of rows and arranged in parallel. At least one row of concave portions, and at least one of the concave portions in the row direction of the concave portion row is the high bottom surface concave portion. In the tray for frozen food according to the seventh aspect, in the sixth aspect, the high bottom surface concave portion is disposed in the middle of the column direction. In the tray for frozen food according to the eighth aspect, in the seventh aspect, each of the high bottom recesses is adjacent to each other in the adjacent row. In the eighth aspect, the tray for frozen foods according to the eighth aspect is characterized in that the concave portion is provided in two rows, and four concave portions are provided in each concave portion row, and two concave portions on the center side of each concave portion row form the high bottom concave portion. . The tray for frozen food according to the first aspect is the sixth, seventh, eighth or ninth aspect, wherein the tray has an intermediate surface disposed in the middle of the vertical direction; and a plurality of the concave portions recessed by the intermediate surface; and The peripheral wall of the intermediate surface is raised. The tray for frozen food according to the first aspect, in the first aspect, has a first intermediate surface as the intermediate surface; and a second intermediate surface higher than the first intermediate surface, and in the second intermediate portion In the first aspect of the invention, in the first aspect, the first intermediate surface has a rib formed between the side walls of the adjacent concave portions in the short-side direction. -6-200836643 The tray for frozen food according to the first aspect, wherein in the first aspect, the height of the rib is lower than the peripheral wall. The tray for frozen food according to the fourteenth aspect, in the form of the ίο, η, 12 or 13, the tray further has a rising portion rising upward from a portion between the concave portions, and an upper end of the rising portion Forming the same height as the upper end of the peripheral wall. In the tray for frozen food according to the fifteenth aspect, in the first aspect, a flat surface is provided at an upper end of the peripheral wall and an upper end of the rising portion. In the fourth or fifth aspect, the plurality of concave portions are arranged in a line in the fourth or fifth aspect, and at least one of the concave portions in the longitudinal direction of the row is a high bottom surface concave portion. The tray for frozen food according to any one of the fourth to sixteenth aspects, wherein the tray for frozen food comprises: a surface layer made of synthetic resin; and an inner layer made of synthetic resin; A heat generating layer that absorbs microwaves to generate heat between the surface layer and the inner layer. The tray for frozen food according to any one of the first to seventh aspects, wherein the concave portion is a main concave portion for accommodating the frozen food; and the frozen portion is connected to the main concave portion and the frozen food is taken out A sub-recess for inserting at least one of a finger and a frozen food taking means. The frozen food package according to any one of the first to eighth aspects, wherein the frozen food package according to any one of the first to eighth aspects, and the frozen food product stored in the concave portion of the frozen food tray; a synthetic resin package in which the frozen food tray containing the frozen food product is vacuum-packed; and a lid body covered from the synthetic resin packaging 200836643 on the upper side of the frozen food tray; a microwave shielding body for the cover. In the frozen food package of the twentieth aspect, in the form of the ninth aspect, the frozen food package is further wrapped by the shrink wrap. The frozen food package of the twenty-first aspect is a frozen food package having a tray for frozen food, a frozen food stored in the frozen food tray, and a frozen food package covering the tray for the frozen food containing the frozen food. The frozen food tray has a concave portion for accommodating the frozen food, and a heat generating layer provided at least in the concave portion and absorbing microwaves to generate heat, and the frozen food is stored in the concave portion, and the frozen food is stored in the frozen portion. The food tray is vacuum-packed by a synthetic resin package, and the lid body is covered on the upper surface side of the frozen food tray from the synthetic resin package, and the cover is provided with a microwave shield. In the frozen food package of the twenty-fifth aspect, in the form of the 19th, 20th or 21st, the lid body is made of paper and covers the microwave shielding body. The frozen food package according to the 23rd aspect is the 19th, 20th, 21st or 22th aspect, wherein the microwave shielding body is an aluminum foil. The frozen food package according to the twenty-fourth aspect, wherein the microwave shielding body has a size covering the upper surface of the frozen food tray. The heat generating layer of the tray for frozen food of the first aspect is interposed between the surface layer and the back layer made of synthetic resin, and the heat generating layer is not exposed to the outside. Therefore, it is possible to surely prevent the heat generating layer from rubbing away from other objects. Further, the frozen food tray can be produced by press molding a thin plate master made of a laminate of the surface layer, the back layer and the heat generating layer, -8 - 200836643. This is easier to manufacture than in the case where a heat-generating body is manually applied to a tray made of a synthetic resin to form a heat-generating layer. Further, in the case where the heating element is applied by hand, in order to prevent the heating element from being disengaged, it is necessary to perform baking after the application of the heating element, and the procedure is complicated and the heat generating layer is hardened, which is liable to be broken by impact. On the other hand, in the tray for frozen food of the present invention, since both surfaces of the heat generating layer are protected by the surface layer and the inner layer, there is no fear that the heat generating layer is separated. For this reason, it is not necessary to bake the heat generating layer, and it is easy to manufacture. Further, it is possible to prevent the heat generating layer from being hardened by baking. When the tray for frozen food of the first aspect is placed in a microwave oven to irradiate microwaves, the heat generating layer absorbs microwaves and generates heat, and the heat is transferred to the frozen food, and the frozen food is thawed. The heat generated in the heat generating layer is mainly caused by heat transfer from the contact surface of the concave portion of the tray and the frozen food, radiation from the non-contact surface, or convective heat transfer through the air layer between the concave portion of the tray and the frozen food. To frozen foods. By heating the concave portion in such a manner as to be covered, it is possible to prevent and suppress defrosting unevenness of the frozen food in the concave portion. In the tray for frozen food of the present invention, it is preferable that the surface layer and the inner layer are made of polypropylene (PP) or polystyrene (PS). In particular, it is preferably made by using a polypropylene (PP) mixed with an inorganic material (PPF). Compared with synthetic resins such as PS or PP, PPF is softer in texture and is not easily cracked by impact. In the tray for frozen food of the present invention, the heat generating layer preferably contains at least one of carbon black and ferrite, and particularly preferably contains carbon black. In the tray for frozen food of the fourth aspect, the microwave is conducted to the concave portion of the high bottom surface through the lower space -9 - 200836643 of the concave portion of the high bottom surface. For this reason, the frozen food stored in the concave portion of the high bottom surface can be sufficiently heated. Further, the frozen food having a small height may be accommodated in the concave portion of the high bottom surface, and the frozen food having a high height may be accommodated in the concave portion having a lower bottom surface. The concave portion of the tray for frozen food of the fourth aspect is preferably composed of a side wall in the longitudinal direction, a side wall in the short side direction, and a bottom surface. In the tray for frozen foods according to the fourth aspect, the plurality of concave portions are arranged in a plurality of rows in a row of recesses in which the distance between the side walls in the longitudinal direction is arranged, and at least one column is arranged in a row. At least one of the recesses in the middle of the column direction of the recess row may be the high bottom recess. Further, the high bottom surface concave portion may be disposed in the middle of the column direction in all the columns. Preferably, in the adjacent columns, the respective high bottom recesses are adjacently disposed. Accordingly, the microwaves can pass through the lower space of each of the high bottom surface recesses, and the high bottom surface recesses and the recesses in the vicinity thereof can be sufficiently heated. Therefore, it is also possible to sufficiently heat the frozen food placed in the concave portion on the center side of the tray. Further, since at least one of the plurality of concave portion rows is used as the high and low concave portions, and the microwave passes through the lower space of the high bottom surface concave portion, the concave portion disposed on the center side of the tray can be sufficiently heated. The tray for frozen food according to the fourth aspect preferably includes: an intermediate surface disposed in the middle of the up-and-down direction; and a plurality of the recesses recessed by the intermediate surface; and a peripheral wall rising from the periphery of the intermediate surface. According to this, when the frozen sushi is stored in the frozen food tray as the frozen food, the rice portion of the frozen sushi can be placed in the concave portion of the tray -10- 200836643, and the food material is placed above the concave portion. The rice is heated to an appropriate temperature by heat transfer from the heat generating layer of the concave portion. On the other hand, since the foodstuff is located above the concave portion, the foodstuff is thawed in a coldened manner. The intermediate surface has a first intermediate surface and a second intermediate surface higher than the first intermediate surface, and preferably the high bottom surface concave portion is disposed on the second intermediate surface. According to this, it is possible to leave a space between the bottom surface of the concave portion of the high bottom surface and the φ of the tray installation surface, and to make the depth of the concave portion of the high bottom surface (the distance from the second intermediate surface to the bottom surface of the concave portion of the high bottom surface) match the depth of the other concave portions. (distance from the first intermediate face to the bottom surface of the recess). For this reason, for example, even if the frozen sushi of the same shape is accommodated in any of the high bottom concave portion and the other concave portion, the rice portion can be disposed in the concave portion, and the food material can be disposed at a position above the concave portion. Further, it is possible to store the sushi in the concave portion of the high bottom surface, and to store the frozen food having a high height such as a sushi roll or a California roll in a concave portion other than the concave portion of the high bottom surface. • A rib may be provided between the side walls in the short side direction of the adjacent concave portion at the first intermediate surface. Therefore, even when a frozen food having a high height such as a sushi roll is accommodated in a concave portion other than the high bottom surface concave portion, the frozen food can be prevented from moving from the concave portion during transportation. ‘The height of the rib is preferably lower than the above-mentioned peripheral wall. According to this, when the lid of the frozen food tray is covered with the lid, the rib is not hindered, and the upper end portion of the peripheral wall can be brought into contact with the inside of the lid. The tray for frozen food of the fourth aspect further has a rising portion that rises upward from a portion between the concave portions, and the upper end of the rising portion preferably forms the same height as the upper end of the peripheral wall -11 - 200836643. According to this, the cover can be supported by the rising portion. Therefore, even if the lid body is pressed, it is possible to prevent the broken or frozen food from being pressed by the lid body. The cover body can be appropriately supported by providing a flat surface at the upper end of the peripheral wall and the upper end of the rising portion. When a plurality of recess rows are provided in two rows and four recesses are provided in each recess row, the two recesses in the column direction of the recess row may form a high bottom recess. Further, when the total of eight concave portions are arranged as described above, the four concave portions on the center side are hard to be irradiated with microwaves compared to the four outer concave portions. For this reason, it is preferable to use the four concave portions on the center side as the high bottom surface concave portions. According to this, even in the four high bottom recesses on the center side, the microwaves can be irradiated by the lower space of the high bottom recesses, and heated to the same extent as the outer four recesses. The concave portion of the tray for frozen food of the fourth embodiment is arranged in one row, and at least one concave portion in the middle of the longitudinal direction of the column may be a high bottom concave portion. According to this, the high bottom recess can be strongly heated and heated to the same extent as the recesses disposed on both end sides of the column. In the first and fourth aspects, the concave portion is preferably a main recessed portion for storing frozen food, and a pair for inserting at least one of a finger and a frozen food take-out means when the frozen food is taken out in communication with the main concave portion. The concave portion is formed. Thereby, the frozen food can be easily taken out from the concave portion. In the frozen food package according to the first or second aspect of the invention, the frozen food tray according to the first or second aspect of the invention and the frozen food product accommodated in the concave portion thereof are vacuum-packed in a synthetic resin package. According to this, the frozen food in the concave portion is pressed by the synthetic resin package of -12-200836643. Therefore, even if the frozen food package is subjected to an impact during transportation or the like, or the package is turned over, the frozen food can be prevented from flying out of the concave portion. Further, for example, when the frozen food is frozen sushi, the food can be prevented from being detached from the rice. Furthermore, it is possible to prevent the frozen food from coming into contact with the underside of the lid. In particular, when a metal microwave shielding body is provided on the lower surface of the lid body, it is possible to reliably prevent the frozen food from directly contacting the metal microwave shielding body. In the ninth aspect, since the lid body has the microwave shielding body, the microwave irradiated from above the frozen food package is shielded by the microwave shielding body. Thereby, the heating of the foodstuff can be suppressed, and the rice can be thawed by changing the temperature to the appropriate temperature, and the foodstuff is cooled. The frozen food package of the ninth form is preferably shrink-wrapped. According to this, it is possible to surely prevent the cover from coming off. In the frozen food package of the twenty-first aspect, the frozen food tray and the frozen food stored in the concave portion are also vacuum-packed in a synthetic resin package. According to this, the frozen food in the concave portion is pressed by the synthetic resin package. Therefore, even if the frozen food package is washed or the like is conveyed or the package is turned over, the frozen food can be prevented from flying out of the concave portion. For example, when the frozen food is frozen sushi, the food can be prevented from being detached from the rice. Further, it is possible to prevent the frozen food from coming into contact with the microwave shielding body under the cover or disposed under the cover. In the twenty-first aspect, since the lid body has the microwave shielding body, the microwave irradiated from above the frozen food package is shielded by the microwave shielding body. Thereby, the heating of the foodstuff can be suppressed, and the rice can be thawed by changing the temperature to the appropriate temperature, and the foodstuff is cooled. -13- 200836643 The cover can be made of paper. Further, the microwave shielding body may be an aluminum foil. The microwave shielding body is preferably provided in such a manner as to cover the tray for frozen food. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view of a frozen food tray 30 of the embodiment; Fig. 2 is a plan view of the frozen food tray 30 of Fig. 1; Fig. 3, Fig. 4a, Fig. 5 and Fig. 6 are along line III-III of Fig. 2, respectively. , IVa line - IVa line, VV line, VI-VI line profile. Figure 4b is an enlarged cross-sectional view of the portion IVB of Figure 4a. Fig. 7 is a perspective view of the refrigerating product tray 30 and the lid body 60 of Fig. 1; and Fig. 8 is a bottom view of the lid body 60 of Fig. 7. Figures 9 and 10 are cross-sectional views of a frozen food package 70 in an embodiment. The frozen food tray (hereinafter sometimes referred to as a tray) 30 has a first intermediate surface 33A and a second intermediate surface 33B, and recesses 32A and 32B recessed from the intermediate surfaces 33A and 33B, and from the intermediate surface 33A. a peripheral portion 34 of the 33B; a peripheral wall 34 that is erected; and a flange portion 35 that constitutes an upper end portion of the peripheral wall 34; and a hanging portion 3 6 that hangs from the outer periphery of the flange portion 35; and from the hanging portion 36 a lower portion of the lower edge projecting outward in the lateral direction and a rising portion 39 standing from the intermediate faces 3 3 A, 3 3 B. As shown in Fig. 2, the peripheral wall 34 has a substantially square frame shape, but the four corners are curved in an arc shape.

The first intermediate faces 3 3 A and 3 3 A are disposed so as to be connected to both sides of the second intermediate face 33B. The position of the second intermediate surface 3 3 B is higher than that of the first intermediate faces 33A and 33A, and a boundary portion is formed between the second intermediate faces 33B and the first intermediate faces 33A - 14 - 200836643 (Fig. 又As shown in Fig. 2 and Fig. 5, the concave portion 32 is provided in two rows of four in the vertical and horizontal directions, and a total of eight. The two concave portions 3 2Β on the center side of each row are 2 The intermediate surface 3 3 Β recesses, and the two concave portions 3 2 A on the both end sides of the row are recessed from the first intermediate surface 3 3 A. The concave portion 3 2 is a main concave portion 3 2 s for accommodating frozen food, and is connected The main concave portion 32s is configured to be provided with a sub-recessed portion 32f into which a frozen food taking means such as a finger or a chopstick is inserted when the frozen food is taken out (Fig. 2). The main concave portion 32s has a rectangular shape in front view and has a longitudinal direction. The side walls 32a, 32a, and the side walls 32b, 32b in the short side direction, and the bottom surface 32c (Fig. 2). The corner portions where the side walls 32a, 32b of the recess 32 intersect are all smoothly curved. The sub recess 32f communicates with the main recess The side wall 32b on the side of the peripheral wall 34 of the 32s, the sub-recess 32f, is formed as a part of the side wall 32b in the short side direction. The main concave portion 32s has a shape that is expanded in the direction of separation. In the row of the four concave portions 32A, 32B, 32B, and 32A, the short side walls 32b of the concave portions 32A, 32B, 32B, and 32A are aligned in the column direction. The side walls 32b in the short side direction of the concave portions 32A, 3 2B, 32B, and 32A are arranged on a straight line. Further, the side walls 3 2a of the concave portions 32A, 32B, 32B, and 32A are slightly perpendicular to the column direction. The longitudinal direction side walls 32a and 32a of the concave portions 32A and 32A adjacent to each other are arranged on the straight line -15-200836643, and the longitudinal side walls 32a and 32a of the concave portions 32B and 32B are also arranged on the straight line. The direction of the rows of the four recessed portions 32A, 32B, 32B, and 3 2A is parallel to one side of the peripheral wall 34. The low-bottom recessed portion 3 2A and the high-bottom recessed portion 3 2B are the same size, and are for storing frozen sushi. The size of the rice. As shown in Fig. 3 and Fig. 4a, the bottom surface 32c of the high bottom surface recess 32B is higher than the bottom surface 32c of the low bottom surface recess 32A. The tray 30 is preferably of a size suitable for use in a commercial or domestic microwave oven. The flange portion 35 is configured to constitute the peripheral wall 3 The upper end face 4 is provided around the entire circumferential surface of the peripheral wall 34 so as to expand to the side outer direction. The flange portion 35 forms a flat surface and supports the cover 60 described below. The hanging portion 36 which is suspended from the outer periphery of the portion 3 5 surrounds the entire circumference of the flange portion 35. The projecting portion 37 projects from the lower end of the hanging portion 36 toward the outer side. The extension of the extension 37 is very small. By setting the hanging portion 36 and the extending portion 37, the hardness of the tray 30 is increased, and the fingertip can be buckled while holding the tray 30. The rising portion 39 is provided at three intervals on the second intermediate surface 33B'. The arrangement direction of the rising portions 39, 39, and 39 is the same as the column direction of the four concave portions 32A, 32B, 32B, and 32A. The middle of the three raised portions 39 is located at the center of the tray 1. The remaining two standing portions 3 9 are located near the falling portions of the first intermediate surface 33A and the second intermediate surface 33B, respectively. The upper end surface ' of the rising portion 39 forms a flat surface 'the same as the upper portion of the flange portion 35 - 16 - 200836643 and the top surface of the rising portion 39 can support the cover 60 ° the rising portion 39 is set to be slightly tapered in such a manner that the hem is pulled up in four directions. In the first intermediate surface 33A, the ribs μα are erected from the portions between the concave portions 32A and 32A. Each of the ribs 3.9 A extends in a manner to contact the peripheral wall 34 and the rising portion 39 of the above-described drop portion. The width of the rib 3 9A is smaller than the interval between the recesses 3 2 A, 3 2 A of the first intermediate surface 3 3 A, and the i-th intermediate surface 3 3 is present on both sides of the rib 3 9 A. a. By arranging the rib portion 3 9 A ' to store the frozen grip sushi in the recess portion 3 2, the food can be prevented from moving toward the longitudinal direction of the concave portion 32. The rigidity of the tray 30 is also raised by providing the rising portion 39 and the rib portion 39A. As shown in Fig. 4b, the tray 30 is composed of a surface layer 31a made of synthetic resin, a back layer 31c, and a laminate 31 composed of a heat generating layer 31b interposed therebetween. The synthetic resin constituting the surface layer 31a and the back layer 31c is preferably composed of PS (polystyrene) or PP (polypropylene), and particularly preferably composed of an inorganic substance or the like mixed with polypropylene (PP). It is made by the Puppet Filler (PPF). The thickness of the surface layer 31a and the back layer 31c is 5 to ΙΟΟμπι, respectively, and 10 to 80 μm, particularly 20 to 70 μm, is optimal. Carbon black or the like is preferable as the heat generating material of the heat generating layer 31b, but is not limited thereto. When the laminate 31 is produced, for example, a carbon ink in which carbon black is dispersed in an organic solvent of -17-200836643 from toluene, ethanol, isopropanol, methyl ethyl ketone, propylene glycol, monomethyl ether or the like is prepared. The carbon ink is adhered to the outer surface of the surface layer 31a by a method such as spraying, brushing, dipping, or the like, and dried to form a heat generating layer 31b. Further, before the heat generating layer 3 1 b is formed, it is preferable to degrease the outer surface of the surface layer 31a. Next, the laminate 31 is formed by forming the back layer 31c on the heat generating layer 31b. Further, the laminate 31 is press-formed by a metal mold or the like to form a tray 30. The heat generating layer 31b has a thickness of 10 to ΙΟΟμιη, particularly preferably 1 to 80 μm, particularly preferably 30 to 60 μm. When the frozen food tray 30 is used as a tray for frozen sushi, the difference between the first intermediate surface 33Α and the second intermediate surface 33Β is 5 to 25 mm, and particularly preferably about 10 to 15 mm. The height difference between the recess 32 Α and the recess 3 2B is 5 to 25 mm, particularly preferably about 10 to 15 mm. When the frozen sushi bag is configured using the tray 30 configured as described above, the frozen sushi 40 is accommodated in each of the concave portions 32 (32A, 32B), and the tray 30 and the frozen sushi 40 are vacuum-packed by the synthetic resin package 50. . Then, the upper surface of the tray 30 is covered with the cover 60 from the synthetic resin package 50 to constitute the frozen food package 70. Further, the frozen food package 70 can be further subjected to shrink packaging. Further, when the shrink wrap is not applied, the lid 60 can be fixed by wrapping the wrap film or placing it in an outer case. The synthetic resin package 50 is preferably a bag of a thermoplastic synthetic resin such as nylon or polyethylene, but is not limited thereto as long as it has microwave-resistant radiation. The cover 60 is preferably made of paper, but is not limited thereto as long as it has microwave-resistant radiation -18-200836643. As shown in Figs. 7 and 8, the lid body 60 is a cover body 61 having a substantially square shape, and a first extending portion 62 extending outward from the four sides thereof, and an outer end of the first extending portion 62 facing outward. The extended second extension portion 63 is configured. The lid body 60 can be bent along the boundary line 64 between the lid body 61 and the first extending portion 62, and can be bent along the boundary line 65 between the first extending portion 62 and the second extending portion. An aluminum foil 66 as a microwave shield is adhered to the inside of the lid 60. If the thickness of the aluminum foil 66 is too small, the aluminum foil itself will generate heat, which will increase the temperature of the food, so it is preferable to be above 1 〇 # m, especially 1 2 // m or more. In order to suppress the cost, the aluminum foil 66 is preferably 100 00 / m or less, particularly 50 / / m or less, of which 20 #m or less is optimal. Preferably, the name box has a size that covers the entire open upper face of the tray 30. As shown in Fig. 9, when the lid body 60 covers the tray 30, the peripheral edge portion of the lid body 61 is opposed to the flange portion 35 of the tray 30 via the synthetic resin package 50. Further, the first extending portion 62 is folded back from the lower portion of the boundary line 64, and the second extending portion 63 is folded inward from the portion of the boundary line 65. The sushi 40 is a food material 42 having rice 41 and the rice 41 when the sushi is held. Correspondingly, there is a mustard between the rice 41 and the food item 42. The food material 42 is exemplified by fish and shellfish such as squid, squid, squid, octopus, shrimp, and star scorpion, or a conditioner thereof, jade simmer, etc., but is limited thereto. The frozen sushi 40 is shown in Fig. 9, and the whole of the rice 41 or the portion of the rice 41 is covered by the holder, and the portion of the rice is placed in the concave portion 32, and the food is 32. The whole is arranged above the intermediate surface 3 3 A, 3 3 B level. Moreover, it does not matter even if a very small portion of the food material 42 exists in the concave portion 32. For the rice 31, preferably 90% or more, particularly 95% or more, is disposed in the concave portion 32 (i.e., at a position lower than the intermediate faces 33A, 33B). In general, the frozen sushi rice is about 10 to 50 g, especially 15 to 40 g, and the size is preferably about 18 to 25 g. The ingredients are about 3 to 40 g', especially 5 to 30 g, of which about 6 to 20 g is optimal. In the case of the tray 30 of the present embodiment, four recesses are provided in the vertical and horizontal directions in the longitudinal direction, and in the case of eight in total, four recesses on the center side of the tray and four on the outer side of the tray are provided. Microwaves are more difficult to communicate than recesses. However, in the tray 30 of the present embodiment, the position of the bottom surface 32c of the high bottom surface concave portion 32B is higher than the position of the bottom surface 32c of the low bottom surface concave portion 32A, and the lower surface of the high bottom surface concave portion 32B is left in the state of being housed in the microwave oven. Void. Therefore, the microwave is transmitted to the high bottom surface concave portion 3 2B through the gap, and the high bottom surface concave portion 32B is heated. Thereby, the frozen sushi 40 in the high bottom surface concave portion 32B can be heated to the same level as the frozen sushi 40 in the low bottom surface concave portion 32A. Further, in Fig. 9, both the low bottom concave portion 32A and the high bottom surface concave portion 32B accommodate the frozen sushi 40 made of sushi, but as shown in Fig. 10, the lower bottom concave portion 3 2 A can also accommodate the height. High-volume sushi or roll sushi 40A such as California rolls. As shown in Fig. 10, the distance from the bottom surface 32c of the lower bottom surface recessed portion 32A to the upper end of the tray 30 (the flange portion 35) is larger. -20 - 200836643 Therefore, it is possible to fully accommodate the sushi rolls of the high-volume sushi rolls and the like. 4〇A. In the frozen food package 70 of the present embodiment, the frozen sushi 40 accommodated in the above-described frozen food tray 30 and its concave portion 32 (32A, 32B) is vacuum-packed in a synthetic resin package 50. According to this, even if the frozen food package 70 is washed or the package 70 is turned over during transportation, the frozen sushi 40 can be prevented from flying out of the concave portion 32. Also, it is possible to prevent the food from being detached from the rice. Further, it is possible to prevent the frozen sushi 40 from coming into contact with the lid 60 or the aluminum foil 66. Further, since the aluminum foil 66 is disposed on the lower surface of the lid 60, the microwave irradiated from above the frozen food package 70 is shielded by the aluminum foil 66. Thereby, the heating of the foodstuff can be suppressed, and the rice can be thawed by changing the temperature to an appropriate temperature and the food material is cooled. In the above description, the frozen food is frozen sushi. However, by changing the size or the number of the concave portions 32, it is also applicable to various biscuits and foodstuffs such as frozen cakes, frozen rice bowls, and frozen curry rice. Further, the number or arrangement of the concave portions and the high bottom surface concave portions is not limited thereto, and may be selected in accordance with the tray size. For example, three or more recesses 3 2 may be provided in one row. When five or more recesses 32 are provided in one row, the number of the recesses 32 provided in the first intermediate surface 33A may be one or two or more. Further, in the above embodiment, the rows of the recessed portions 32A, 32B, 3 2B, and 32A are set to 2 歹!], but they may be provided in three or more rows. Further, in the present invention, the above-described columns may be set to only one column. Fig. 11 is a perspective view of a tray 1 for frozen food according to another embodiment. Fig. 1a is a longitudinal cross-sectional view showing a state in which the frozen food package using the tray 1 is in the middle of the state - 21, 200836643, and Fig. 12b is a XIIB of Fig. 12a. Part of the enlarged view. The frozen food tray (hereinafter sometimes referred to simply as a tray) 1 has a main bottom surface 3, a recess 2 recessed from the main bottom surface 3, and a peripheral wall 4 erected from a peripheral edge portion of the main bottom surface 3, and a flange portion 5 constituting an upper end portion of the peripheral wall 4, and a hanging portion 6 that hangs from the outer periphery of the flange portion 5, and a projecting portion 7 projecting from the lower edge of the hanging portion 6 toward the outer side of the side portion And a rib 8 provided at a corner portion of the main bottom surface 3 and the peripheral wall 4, and a rising portion 9 standing from the main bottom surface 3. The recessed portion 2 has a substantially rectangular shape when viewed from the front, and has a side wall 2a in the longitudinal direction, a side wall 2b in the short-side direction, and a bottom surface 2c. The recessed portion 2 is provided in a total of eight in a total of eight in two rows in parallel with the longitudinal direction. The recess 2 is a size that can accommodate rice for frozen sushi. Further, all of the corner portions where the side walls 2a and 2b of the recessed portion 2 intersect are smoothly curved. The main bottom surface 3 has a substantially square outer edge shape, but is curved in an arc shape along four corner portions of the peripheral wall 4. The main bottom surface 3 between the side walls 2a, 2a of the adjacent concave portions 2, 2 in the longitudinal direction forms a side wall in the short side direction of the concave portion 2, 2 adjacent to the strip portion 3a extending along the side walls 2a, 2a The main bottom surfaces 3 of 2b, 2b extend along the side walls 2b, 2b. The peripheral wall 4 is disposed to surround all of the circumference of the main bottom surface 3. The peripheral wall 4 has a wall 4a parallel to the side wall 2a in the longitudinal direction of the recess 2, and a wall 4b parallel to the side wall 2b in the short side direction. The ribs 8 are provided at intersections of the walls 4b of the peripheral wall 4 and the main bottom surface 3. -22-200836643 The flange portion 5 is such that the upper end surface of the peripheral wall 4 is formed, and the entire peripheral surface of the peripheral wall 4 is bypassed so as to expand to the side outer direction. This flange portion 5 forms a flat surface. The hanging portion 6' hanging from the outer periphery of the flange portion 5 surrounds the entire circumference of the flange portion 5. The projecting portion 7 projects outward from the lower end of the hanging portion 6, but the projecting length of the projecting portion 7 is extremely small. By setting the hanging portion 6 and the projecting portion 7, the hardness of the tray 1 is raised, and the fingertip can be buckled while holding the tray 1. The erecting portion 9 is located at the intersection of the strip portions 3a, 3b. The upper end surface of the rising portion 9 forms a flat surface having the same height as the upper surface of the flange portion 5. The erecting portion 9 is provided in a direction slightly toward the belt portions 3a, 3a, 3b, 3b so as to be slightly tapered in a direction in which the hem is pulled up. The rib 9A is erected from the band portion 3b. This rib 9A is located between the rising portions 9, 9 and extends in such a manner as to contact the rising portions 9, 9. Further, the rib 9A also extends in a manner to contact the rising portion 9 and the wall 4a of the peripheral wall 4. The width of the rib 9A is smaller than the width of the strip portion 3b, and the strip portion 3b is present on both sides of the rib portion 9A. By providing the ribs 9A, it is possible to prevent the food material from moving toward the longitudinal direction of the concave portion 2. By setting the rising portion 9 and the rib portion 9A, the hardness of the tray 1 is also increased. As shown in Fig. 12b, the tray 1 is composed of a main body 1a made of synthetic resin and a heat generating layer 1b formed on the outer surface of the body 1a. The synthetic resin constituting the tray body 1a is exemplified by polypropylene or the like, but is not limited thereto. The thickness of the tray body 1& is iOO~1500μιη, wherein 300~800μηη, especially ~8〇〇μιη is optimal. -23- 200836643 In this state, the heat generating layer 1 b is formed on the outer surface of the tray 1, that is, the outer surface of the bottom surface 2c of the recess 2 and the outer surfaces of the side walls 2a, 2b, the lower surface of the main bottom 3, the outer surface of the peripheral wall 4, and the flange thereof. The lower surface of the portion 5 faces the opposing surface of the peripheral wall 4 of the lower portion 6, the lower surface of the projecting portion 7, the lower portion of the rib portion 8 (inside), and the lower surface (inside) of the rising portion 9. However, it is also possible to provide the heat generating layer 1 b only in some places. For example, the heat generating layer 1b may not be provided in the flange portion 5, the hanging portion 6, and the protruding portion 7, and the thickness of the heat generating layer 1b may be a uniform thickness as a whole or a portion thick. For example, the heat generating layer 1b on the bottom surface or the side surface of the recess 2 is made thicker than the others. In the heat generating layer 1b, the coating material for dissolving the resin for forming a coating film and dispersing the powder of the hot body is applied to the outside of the tray main body 1a by spraying, brushing, dipping, or the like, followed by baking. As the heat generation, ferrite or carbon black or the like can be used, but carbon black is preferably used. The thickness of the heat generating layer is 10 to ΙΟΟμιπ', particularly 1 〇 to 80 μιη, where 30 to 60 μιη is optimal. Further, it is preferable to degrease the outside of the tray body before the coating film is formed. The recessed portion 2 of the tray 1 thus constructed is stored in the same manner as the above-described embodiment, and the frozen sushi 40 is accommodated, and then the tray 30 and the frozen sushi are vacuum-packed by the synthetic resin package 50. Next, the upper surface of the tray 30 and the frozen sushi 40 is covered with the cover 60 from the synthetic resin package 50 to constitute a frozen food package 70. In the frozen food package of the present embodiment, the frozen food 1 and the frozen food 1 〇 ' stored in the concave portion 2 are also made of a synthetic resin, and the left side 1 a state is attached. 40 In the production of jhJ-L·pan--24- 200836643 body 50 is vacuum packed. According to this, it is possible to prevent the frozen food 10 from flying out of the concave portion 32 even if the frozen food package is subjected to an impact or the package is turned over during transportation or the like. Also, it is possible to prevent the ingredients from being detached from the rice. Further, the frozen food 10 can be prevented from contacting the lid 60 or the aluminum foil 66. Further, since the aluminum foil 66 is disposed on the lower surface of the lid 60, the microwave irradiated from above the frozen food package 70 is shielded by the aluminum foil 66. Thereby, the heating of the foodstuff can be suppressed, and the rice can be thawed by changing the temperature to a suitable temperature and cooling the foodstuff. [Examples] Hereinafter, the present invention will be described more specifically by way of examples and comparative examples. In the embodiment, in the frozen food package 70, the height position of the first intermediate surface 33A is different from the height position of the second intermediate surface 33B. Further, in Comparative Example 1, in the frozen food package 70, the height position of the first intermediate surface 33A is the same as the height position of the second intermediate surface 33B. The frozen food package 70 will be described below. In the laminate 31 constituting the tray 30, the surface layer 31a is a PPF having a thickness of 65 μm, the back layer 31b is a PPF having a thickness of 25 μm, and the heat generating layer 31b is a carbon black layer having a thickness of 40 μm. The carbon black in the composite layer contained about 34% by weight. The dimensions of the various parts of the tray 1 are as follows. Length of the side of the tray 1 : 210 mm Depth of the recessed portions 32A, 32B: 20 mm - 25 - 200836643 Size of the recessed portions 32A, 32B, upper portion: 62 x 32 mm Lower portion: 5 7 x 27 mm Height position of the first intermediate surface 33A and height position of the second intermediate surface 33B Height difference: same height (Comparative Example 1) ·· 5 mm (Example 1): 10 mm (Example 2): 1 5 mm (Example 3) From the first intermediate face 33A to the upper end of the peripheral wall 34 (Flange The height of the portion 35) is 22 mm. The frozen sushi (foodstuff: squid) is stored in the total of eight recesses 3 2 of the tray 1, and most of the rice 41 shown in Fig. 9 is placed in the concave portion 32, and the food material 42 is placed. It is located above the first intermediate surface 33A and the second intermediate surface 33B. The rice 41 is 22 g, and the food material 42 is 10 g on average. Further, as the synthetic resin package 50, a nylon bag having a thickness of 85/xm is used. Using the nylon bag, the tray 30 in which the frozen sushi 40 has been stored is vacuum-packed. The lid body 61 of the lid 60 is made of paper having a thickness of 0.6 mm, and the thickness of the aluminum foil 66 is 15/im. [Examples and Comparative Examples] Each frozen food package 70 (freezing temperature·-20t) of the above Comparative Example 1 and Examples 1 to 3 which were stored in a frozen state was placed in a microwave oven "NE-S22F" manufactured by National Corporation (Microwave) Output: 600W), heated for 2 minutes and 20 seconds, then -26-200836643 placed for 5 minutes to thaw. Perform the test and measure the temperature (C) of each rice and food. The results are shown in Tables 1 to 4. Further, the frozen sushi to be placed in each concave portion is named as shown in Fig. 13a. Further, as shown in Fig. 13 b, the temperature side position D s of the rice is the center and the portion of the rice, and the temperature of the food material is measured at the upper center of the food.

-27, 200836643

P : 酹' 岖壊)|call average temperature 37.2 21.7 21.1 35.6 37.0 20.9 20.3 38.5 20.0 cn inch 17.6 17.2 ο in 16.8 Experiment 10 $ 00 〇 \ o 1—t (N (N OS cn oo T—H cn Ό Os τ—Η Experiment 9 OS m On rH 00 t—H 00 cn (N ON 卜 姆 卜 Experiment 8 00 m ON <N l> m Os rH H CN v〇m (N (N ON tH 'w^ Inch m (N experiment 7 in m $ cn oo rH (N (N Os m cn (N Os o ON H vo ON experiment 6 Pi (N (N om art ON T-H mouth inch rH iT) inch experiment 5芝oo oo oo m 〇m ▼-t (N 00 (N ?-H (N cs Q\ f < (N < N experiment 4 G\ (Τ) (N (N (N (N (N t-H r —( CN OS o cn (N / ^ N (N Ci (N VO inch experiment 3 Ο v〇 (N port cn rn o \ < N (N ra art iT) < N rH σ \ (N pollution experiment 2 芝 inch rH OS t—H m cn ON (N ON OO rH m (N (N ON ON 卜 ra m VO CN, experiment 1 VO m < N rH m Ό cn < N (N (N cn ON \ 〇rH ro oo inch rH nn squid 1 squid 2 squid 3 squid 4 squid 5 squid 6 squid 7 squid 8 squid 1 squid 2 squid 3 squid 4 I- 1 squid 5 鲔Fish 6 squid 7 squid 8 m rice temperature Food temperature () K1Hfffis € righteous light -28-200836643 #

(I ) i ho s average temperature 36.2 23.4 22.3 34.3 37.1 22.0 21.4 37.4 19.6 00 00 ν〇19.0 17.4 00 iri 17.3 Experiment 10 OS m Ch m ON m ON T—^ 〇\ 1—^ Os cn cn VO (Ν ( Ν τ-Η τ-Η 〇〇Experiment 9 〇\ mm (N Ό m Os m 00 rH in m 〇\ inch 0 Λ m inch experiment 8 〇\ <N ON <N in (N m (N 〇\ m 00 <Ν 卜 (Ν Experiment 7 ON (N m (N m (N Os mt-H (N l—Η (N Ό m 艺卜〇〇〇〇00 (Ν <Ν ON experiment 6 〇〇〇cn <N r-< (N (N Ό ON rH 00 00 m On experiment 5 l> cn 〇〇m CN Ον inch (Ν Experiment 4 (N ON vo cn O 〇\ 口(Ν (Ν卜(Ν v 〇Experiment 3 i—H (N 艺<N ON CN v〇(N 00 cn r-* m On ΟΟ m 卜 (N (N Experiment 2 cn (N CO m 芝 (N (N Os tn m ON 卜ON 卜ν inch experiment 1 mm to (N (N m cn 〇〇〇〇 ON ON ^Τ) ΟΟ inch ON m T-H item squid 1 bribe fish 2 squid 3 squid 4 bribe fish 5 squid 6 squid 7 squid 8 squid 1 bribe fish 2 squid 3 squid 4 squid 5 squid 6 squid 7 squid 8 rice temperature food temperature -29- 20 0836643

(mlt: paste back 岖) (n^_m average temperature 32.7 26.5 24.3 34.4 33.2 24.2 22.3 32.0 1 15.3 Ο 〇\ ο cK 15.5 13.8 oo 00 m od 13.9 Experiment 10 (Ν m 2 \omv〇(N m (Ν m卜卜1—4 rH ON Ό m Experiment 9 〇\ (N (Ν (Ν mm rH m Ό (N 00 rH ο 00 m 00 inch experiment 8 (Ν (Ν &Ν;Ν m ON 00 00 inch ▼-H inch) H o 卜^Τ) Experiment 7 σ\ (Ν οο (Ν m ο Η t Η t-it-H inch 〇 \ CN Experiment 6 inch m CN ν〇 (Ν vo 1—H <N 艺mm 寸r —^ (Ν τ-Ή ΟΝ vn 卜1—H Experiment 5 ΟΟ (Ν m rH m oo (N v〇(N 00 (N 卜 1—Η 00 00 v〇rH ON oo experiment 4 mm (Ν vo mm CM m (N VO m Ό 卜 00 H (N Experiment 3 (N m 艺 P; t-H CO VO (N m < N $ rH Ον 寸 〇 寸 实验 2 实验 实验 实验 Ν Ν Ν Ν Ν Ν Ν N N N N N N N N N H <N mm 卜1—Η VO t—HC\ Experiment 1 mm (Ν <Ν v〇m <N (NJ ΟΝ 00 Ό (N 1—f ON 卜 m 1—H ΠΉ 鲔 1 鲔鱼2 squid 3 bribe fish 4 squid 5 squid 6 squid 7 squid 8 bribe fish 1 squid 2 bribe fish 3 squid 4 squid 5 squid 6 squid 7 squid 8 rice Of food temperature -30-200836643

Inch tenderness (s-a: disk barrier) fiber « average temperature 31.7 26.1 23.8 34.6 33/7 23.6 22.6 32.4 15.2 00 οό ο os 15.7 13.6 inch oo inch οό i 14.5 experiment 10 ON (Ν 00 iT) Ό (N (N (N oo 1—H (Ν r-^ \〇^—1 〇 寸 inch experiment 9 as (N VO (Ν (Ν ( & m <N m TH (N ON 1-H 沄Ο oo 卜 m ON m Experiment 8 00 (N (Ν (Ν m 艺 m (N ON (N inch 00 卜 v〇 inch 1 - H experiment 7 00 (N mouth b m CN CN CN oo mm ν〇m 卜 OO two experiment 6 mmmm ( T) (N N (N (N mv〇On rj Bu Bu VO experiment 5 Ό (Ν ON m (N cn 宕00 <N m CN ON 00 Ο Experiment 4 cn cn tH m (N CN 00 00 r- * H oo experiment 3 ! 00 (Ν (Ν Ν (Ν ( (N m inch inch inch inch CTn ON CN experiment 2 00 m 〇\ (Ν in (Ν (N 00 ( 00 2 CN 卜 (N rH Inch TH Experiment 1 cn 00 cn 〇\ mm (N ON m ▼-H Bu o (N 1—H mo oo oo ΕΠ : Qing carp 1 squid 2 1 squid 3 squid 4 squid 5 squid 6 鲔Fish 7 squid 8 squid 1 squid 2 squid 3 squid 4 squid 5 squid 6 squid 7 squid 8 i rice temperature food temperature -31 - 200 836643 From the comparison of the comparison 1 with the first to third embodiments, it is apparent that the four concave portions on the center side are formed as high bottom concave portions, and the frozen sushi in the central side concave portion and the frozen sushi in the outer four concave portions, the temperature difference and the ingredients are In particular, in the frozen sushi of Examples 2 and 3, the difference in temperature between the rice and the foodstuff is improved to a range of 5 to 10 ° C. For this reason, a high bottom recess is provided, and the package is accommodated. The shape in the microwave oven φ is a space between the bottom surface of the high bottom surface concave portion and the microwave oven, and the micro space can be sufficiently irradiated to the high bottom surface concave portion on the center side. As described above, the four high bottom surface concave portions on the center side are known. The height difference of the lower bottom concave portion is preferably 10 mm or more. Further, the volume is too large, and the height difference is preferably l〇mm. The present invention has been described in detail with reference to the preferred embodiments thereof. φ Further, the present invention is filed by reference to the application filed on Nov. 29, 2006, the disclosure of which is hereby incorporated by reference. [Brief Description of the Drawings] Fig. 1 is a perspective view of a tray 30 for frozen foods according to an embodiment. Fig. 2 is a plan view of the frozen food tray 30 of Fig. 1 . Fig. 3 is a cross-sectional view taken along line III-III of Fig. 2 . [Fig. 4] Fig. 4a is a cross-sectional view taken along the line IVa-IVa of Fig. 2; the temperature of β by the 4 rice is because the 5 waves from the side are not allowed to deviate from the industry. The overall 4b of the sample is -32-200836643. An enlarged sectional view of the portion IVB of Fig. 4a. Fig. 5 is a cross-sectional view taken along line V-V of Fig. 2 . Fig. 6 is a cross-sectional view taken along line VI-VI of Fig. 2 . Fig. 7 is a bottom view of the lid body 60 of Fig. 7 in the tray 30 and the lid body of the frozen food of Fig. 1; [Fig. 9] is a cross-sectional view of the frozen food package 70 of the embodiment [Fig. 1A] is a cross-sectional view of the frozen food package 70 of the embodiment [Fig. 11] is a tray for frozen food according to another embodiment [Fig. 12] Fig. 12a is A longitudinal sectional view showing a state in which the tray 1 of Fig. 1 is manufactured will be described; Fig. 1 2b is an enlarged view of Fig. 1. [Fig. 1 3] Fig. 1 3 a is a diagram illustrating the temperature measurement position of the frozen sushi in the embodiment. [Description of main component symbols] 1 : Tray for frozen food 1 a : Pallet main body lb : Heat generating layer 2 : Concave portion 2 a : Long side direction side wall 2 b : Short side direction side wall 2 c : Bottom surface 3 : Main bottom surface 3a, 3b : Strip shape A perspective view of the portion 60. Cutout. 1 perspective view. Figure of the XIIB part of the frozen food package 2a; Fig. 33-200836643 4: peripheral wall 4a, 4b: wall 5: flange portion 6: sag portion 7: extension portion 8: rib portion 9: erect portion 9A: rib 1 0 : frozen food 30 : tray for frozen food 31 : laminate 3 1 a : surface layer 3 lb : heat generating layer 3 1 c : inner layer 32, 32A, 3 2B : recess 3 2 a : long Side wall 3 2b: Short side wall 32c: bottom surface 32f: Sub recess 32s: Main recess 33A: First intermediate surface 3 3 B: Second intermediate surface 3 4 : Peripheral wall 3 5 : Flange • 34 200836643 3 6 : sag portion 3 7 : extension portion 3 9 : erect portion 39A : rib portion 40 : frozen sushi 40A : roll sushi 41 : rice 4 2 : food material 50 : synthetic resin package 60 : cover 61 : cover Main body 62: first extension portion 63: second extension portion 6 4, 6 5 : boundary line 66: aluminum foil 7 0 : frozen food package

Claims (1)

200836643 X. Patent application scope 1. A tray for frozen foods, which is a tray for frozen foods having a concave portion for accommodating frozen food, characterized in that: the tray for frozen foods comprises: a surface layer made of synthetic resin; and a synthetic resin The inner layer of the system; and the heat generating layer between the surface layer and the inner layer, absorbing microwaves to generate heat. The tray for frozen foods according to claim 1, wherein the surface layer and the inner layer are made of polypropylene or polystyrene. The tray for frozen foods according to claim 1, wherein the heat generating layer contains at least one of carbon black and ferrite. A tray for frozen foods, comprising: a plurality of recesses for accommodating frozen foods; and a tray for frozen foods provided at least in the recesses and absorbing heat generated by microwaves, wherein: at least one recess is A high bottom surface recess having a bottom surface position higher than a bottom surface of the other recess. The tray for frozen foods according to claim 4, wherein each of the concave portions has a side wall in a longitudinal direction, a side wall in a short side direction, and a bottom surface. 6. The tray for frozen foods according to claim 5, wherein a plurality of recesses are arranged in a row of recesses in which the side walls of the longitudinal sides are spaced apart from each other, and a plurality of rows are arranged in parallel. Further, in at least one row of the concave portion rows, at least one of the concave portions in the middle of the column direction of the concave portion row is the high bottom surface concave portion. The tray for frozen foods according to claim 6, wherein the high bottom surface recessed portion is disposed in the middle of the column direction in all the rows. The tray for frozen foods according to claim 7, wherein each of the high bottom recesses in the adjacent rows is disposed adjacent to each other. The tray for frozen food according to the eighth aspect of the invention, wherein the recessed portion is provided in two rows, and four recessed portions are provided in each of the recessed portions, and two recessed portions on the central side of each of the recessed rows are formed as The above high bottom recess. The tray for frozen food according to the sixth aspect of the invention, wherein the tray has: an intermediate surface disposed in the middle of the up-and-down direction; and a plurality of the recesses recessed by the intermediate surface; and the intermediate surface The peripheral wall of the circumference of the circumference. The tray for frozen food according to the first aspect of the invention, wherein the intermediate surface has a first intermediate surface; and a second intermediate surface higher than the first intermediate surface, 2 The upper surface concave portion is disposed at the intermediate surface. The tray for frozen food according to the above aspect, wherein the first intermediate surface is provided with a rib between the adjacent side walls of the adjacent concave portions. The tray for frozen foods according to claim 12, wherein the rib has a height lower than the peripheral wall. The tray for frozen food according to claim 10, wherein the tray further has a rising portion that rises upward from a portion between the concave portions, and the upper end of the rising portion is the same as the above The upper ends of the peripheral walls are at the same height. The tray for frozen foods according to claim 4, wherein a flat surface is provided at an upper end of the peripheral wall and an upper end of the rising portion, respectively. The tray for frozen food according to the fourth aspect of the invention, wherein the plurality of concave portions are arranged in a row, and at least one of the concave portions in the longitudinal direction of the row is a high bottom concave portion. . The tray for frozen food according to the fourth aspect of the invention, wherein the tray for frozen food comprises: a surface layer made of synthetic resin; and an inner layer made of synthetic resin; and the surface layer and Between the inner layers, a heat generating layer that absorbs microwaves to generate heat. The tray for frozen food according to the first aspect of the invention, wherein the concave portion is a main concave portion for accommodating frozen food, and is used for supplying fingers and frozen food when communicating with the main concave portion and taking out frozen food. A sub-recess inserted into at least one of the take-out means is formed. A frozen food package, comprising: a frozen food tray according to claim 1; and a frozen food stored in the concave portion of the frozen food tray; and the frozen food to be stored a synthetic resin package in which the frozen food tray is vacuum-packed; and a lid covering the synthetic resin package on the upper side of the frozen food tray; and a microwave shielding body provided on the lid . The frozen food package of claim 19, wherein the frozen food package is further wrapped by a shrink wrap. The frozen food package is a frozen food package having a tray for frozen food, a frozen food stored in the tray for frozen food, and a lid covering the tray for frozen food containing the frozen food. The special frozen food tray has: a tray for storing cold and at least at the concave portion and absorbing microwaves to generate heat; the frozen food is stored in the concave portion, and the frozen food is stored The frozen food packaging body is vacuum-packed, and the lid body is covered from the upper side of the frozen food tray, and the lid body is provided with a microwave shielding body. 2 2 . The product package of claim 19, 20 or 21, wherein the cover is made of paper and covered with 〇 2 3 , as claimed in the patent range No. 19, 20 or 2 1 The package wherein the microwave shielding body is an aluminum foil. 24. The article of claim 9, wherein the microwave shielding body has a size covering the upper surface of the upper disk. The concave portion of the frozen food, the cooked layer, the tray by the synthetic tree, the resin package, the frozen food described above, the microwave shielding body, the frozen food, the frozen food, the frozen food, the tray -39-