Blow molding box for self-heating food, production mold and production method

Abstract

The invention discloses a blow molding box for self-heating food, a production mold and a production method, and relates to the technical field of blow molding boxes and production. The blow molding box for the self-heating food is used for containing the food to be heated or a heating bag, the heating bag is a heating bag capable of heating when encountering water, a water level identification protrusion is arranged on the blow molding box, and a temperature sensing color changing layer is arranged on the water level identification protrusion. According to the blow molding box for the self-heating food, the production mold and the production method, the color can be changed within the range of 0-20 DEG C in the mode that the temperature sensing color changing layer is additionally arranged on the water level line protrusion, and then the corresponding water amount can be added through operation selection, for example, the temperature sensing color changing layer changing from blue to red at the temperature of 0-20 DEG C is selected; when the temperature-sensing color-changing layer is slightly red, water submerging the upper edge of the water level (the temperature-sensing color-changing layer) can be added, when the temperature-sensing color-changing layer is slightly blue, water submerging the lower edge of the water level (the temperature-sensing color-changing layer) can be added, and finally accurate heating of food is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of blow molded boxes and production, and particularly to a blow molded box for self-heating food, a production mold and a production method. Background Art

[0002] Blow molded boxes are used as self-heating boxes or food trays for self-heating food due to their convenient production and low production cost. In order to ensure that the self-heating pack has an appropriate amount of water to meet the heating requirements, water level lines are mostly provided on the inner wall of the self-heating box (if there is too little water in the self-heating box, the heating pack will not generate enough heat; if there is too much water, a large amount of heat will be absorbed by the water and the food cannot be heated; if there is too little water in the food tray, the self-heating food cannot be fully brewed; if there is too much water, the food cannot be fully heated). Considering the amount of self-heating food and the characteristics of the ambient temperature, etc., the traditional water level line markings cannot meet the heating requirements.

[0003] In the prior art, the mold of the blow molded box is an integral mold, which can only produce heating boxes or food trays with a certain fixed water level line. When used in relatively cold or relatively hot regions, for example, it is necessary to re-select the corresponding heating pack and water level line. The integral mold can no longer meet such production requirements. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a blow molded box for self-heating food, a production mold and a production method, and solves the following technical problems:

[0006] 1. The water level line in the existing self-heating food cannot meet the requirement of adjusting the water addition amount with the change of the ambient temperature;

[0007] 2. The integral mold of the existing blow molded box with a water level line cannot adjust the position of the water level line.

[0008] (II) Technical Solutions

[0009] A blow molded box for self-heating food, the blow molded box is used for placing one of the food to be heated and the heating pack, the heating pack is a heating pack that generates heat when encountering water, a water level marking protrusion is provided on the blow molded box, and a temperature-sensitive color-changing layer is provided on the water level marking protrusion. The temperature-sensitive color-changing layer is used to sense the temperature of the environment where the blow molded box is located. The temperature sensing range of the temperature-sensitive color-changing layer is 0-20°C, and the user can select the water addition amount that submerges the temperature-sensitive color-changing layer according to the color of the temperature-sensitive color-changing layer.

[0010] A two-stage blow molding die for a blow molded box for self-heating food, which is used to manufacture a blow molded box for self-heating food, includes a water level marking protrusion module for forming a water level marking protrusion. The water level marking protrusion module is arranged on the inner wall of the die. The die includes an upper die section and a lower die section. The upper die section is used to form the top of the blow molded box, and the lower die section is used to form the bottom of the blow molded box. The water level marking protrusion module is arranged at least at one position on the inner wall of the upper die section and the inner wall of the lower die section.

[0011] A multi-stage blow molding die for a blow molded box for self-heating food, which is used to manufacture a blow molded box for self-heating food, includes a water level marking protrusion module for forming a water level marking protrusion. The water level marking protrusion module is arranged on the inner wall of the die. The die includes an upper die section, section A, section B, section C and a bottom section. The upper die section is used to form the top of the blow molded box, the bottom section is used to form the bottom of the blow molded box, and sections A, B, and C are used to form the wall of the blow molded box. The water level marking protrusion module is arranged at least at one position on the inner wall of section A, the inner wall of section B, and the inner wall of section C.

[0012] A two-stage die manufacturing method for a blow molded box for self-heating food, using a two-stage blow molding die for a blow molded box for self-heating food and the following steps:

[0013] The water level marking protrusion module is arranged on the inner wall of the lower die section;

[0014] Select the lower die section with the corresponding height according to the height of the target blow molded box;

[0015] Select the lower die section with the corresponding water level marking protrusion module of the corresponding size according to the setting position and size characteristics of the water level marking protrusion of the target blow molded box.

[0016] A multi-stage die manufacturing method for a blow molded box for self-heating food, using a multi-stage blow molding die for a blow molded box for self-heating food and the following steps:

[0017] The water level marking protrusion module is arranged on the inner wall of section B;

[0018] Select the combination of section A, section B, and section C that can meet its height according to the height of the target blow molded box;

[0019] Select section B with the corresponding water level marking protrusion module of the corresponding size according to the setting position and size characteristics of the water level marking protrusion of the target blow molded box.

[0020] (III) Beneficial effects

[0021] The present invention provides a blow molded box for self-heating food, a production die and a production method. It has the following

[0022] Beneficial effects:

[0023] (1) By adding a temperature-sensitive color-changing layer to the water level line protrusion, the blow-molded box, production mold and production method for self-heating food can change colors within the range of 0 to 20 °C, and then the operator can choose to add the corresponding amount of water. For example, for a temperature-sensitive color-changing layer that changes from blue to red at 0 to 20 °C, when the temperature-sensitive color-changing layer is more red, the amount of water that submerges the upper edge (temperature-sensitive color-changing layer) of the water level line can be added, and when the temperature-sensitive color-changing layer is more blue, the amount of water that submerges the lower edge (temperature-sensitive color-changing layer) of the water level line can be added, finally achieving precise heating of the food.

[0024] (2) The blow-molded box, production mold and production method for self-heating food adopt a split mold design, and the corresponding mold module can be selected according to the height of the target blow-molded box, thereby improving the flexibility of blow-molded box production. Description of the Drawings

[0025] Figure 1 It is a structural cross-sectional view of the present invention;

[0026] Figure 2 is Figure 1 a partial enlarged view of part A in

[0027] Figure 3 It is a schematic diagram of the usage state of the present invention;

[0028] Figure 4 It is a structural diagram of a traditional manufacturing mold for a blow-molded box;

[0029] Figure 5 It is a structural diagram of a two-stage blow-molded box manufacturing mold of the present invention;

[0030] Figure 6 is Figure 5 a partial enlarged view of part B in

[0031] Figure 7 It is a structural diagram of a multi-stage blow-molded box manufacturing mold of the present invention.

[0032] In the figure: 1. Blow-molded box; 11. Water level marking protrusion; 2. Temperature-sensitive color-changing layer; 3. Meal tray; 4. Mold; 41. Water level marking protrusion module; 42. Upper mold section; 43. Lower mold section; 44. Bottom section; 45. Section C; 46. Section A; 47. Section B. Detailed Embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Example 1:

[0035] A blow - molded box for self - heating food. The blow - molded box 1 is used to place either the food to be heated or the heating pack. The heating pack is a heating pack that generates heat when it comes into contact with water. A water - level marking protrusion 11 is provided on the blow - molded box 1, and a temperature - sensitive color - changing layer 2 is provided on the water - level marking protrusion 11. The temperature - sensitive color - changing layer 2 can be selected to be pasted on the water - level marking protrusion 11. The temperature - sensitive color - changing layer 2 is used to sense the temperature of the environment where the blow - molded box 1 is located. The temperature - sensing range of the temperature - sensitive color - changing layer 2 is 0 - 20 °C, and the corresponding color changes are blue and red. Users can choose the amount of water to add to submerge the temperature - sensitive color - changing layer 2 according to the color of the temperature - sensitive color - changing layer 2.

[0036] Among them:

[0037] The blow - molded box 1 is used to place the food to be heated or the heating pack. Only the usage purposes are different, and the principle of prompting the water - adding position in the present invention is the same.

[0038] The width of the water - level marking protrusion 11 can be determined through a limited number of food - heating experiments within the range of the 0 - 20 °C environment. Usually, in order to control the range of water - quantity addition, the width of the water - level marking protrusion 11 is usually equal to 5% - 10% of the height of the blow - molded box 1.

[0039] When used as a heating box:

[0040] First, put the heating pack into the blow - molded box 2 and observe the color of the temperature - sensitive color - changing layer 2. If the color of the temperature - sensitive color - changing layer 2 is blue, it means the environmental temperature is relatively low. It is recommended to add a relatively small amount of water (to avoid insufficient food heating due to adding too much water). At this time, the amount of water added just submerges the lower edge of the water - level marking protrusion 11.

[0041] If the color of the temperature - sensitive color - changing layer 2 is red, it means the environmental temperature is relatively high. It is recommended to add a relatively large amount of water (to let the water absorb part of the heat and avoid over - heating and affecting the food taste). At this time, the amount of water added just submerges the upper edge of the water - level marking protrusion 11.

[0042] When used as a food tray:

[0043] First, put the food to be heated into the blow - molded box 2 and observe the color of the temperature - sensitive color - changing layer 2. If the color of the temperature - sensitive color - changing layer 2 is blue, it means the environmental temperature is relatively low. It is recommended to add a relatively small amount of water (to avoid insufficient food heating due to adding too much water). At this time, the amount of water added just submerges the lower edge of the water - level marking protrusion 11.

[0044] If the color of the temperature-sensitive color-changing layer 2 is red, it indicates that the ambient temperature is relatively high. It is recommended to add more water (let the water absorb part of the heat to avoid overheating and affecting the taste of the food). At this time, the added water just needs to submerge the upper edge of the water level mark protrusion 11.

[0045] Generally, the height of the meal tray is relatively low, so the adjustable range of the water volume is correspondingly reduced. However, it does not exclude that the present invention can be applied to a higher meal tray (to facilitate the setting of the water level mark protrusion 11 with a certain height).

[0046] When this embodiment is used as a meal tray, it is necessary to select a material suitable for food and a material that can withstand a temperature of 120 °C.

[0047] When this embodiment is used as a heating box, it is necessary to select a food-grade material with stable chemical properties and high temperature resistance to avoid changing the chemical properties of the water in the heating box during the heating process of the heating pack and thus affecting the material of the heating box body.

[0048] Embodiment 2: The two-stage processing mold and processing method of Embodiment 1

[0049] A two-stage blow molding mold for a self-heating food blow molding box, including a water level mark protrusion module 41. The water level mark protrusion module 41 is used to form the water level mark protrusion 11. The water level mark protrusion module 41 is arranged on the inner wall of the mold 4. The mold 4 includes an upper mold section 42 and a lower mold section 43. The upper mold section 42 is used to form the top of the blow molding box 1, and the lower mold section 43 is used to form the bottom of the blow molding box 1. The water level mark protrusion module 41 is arranged at least at one position on the inner wall of the upper mold section 42 and the inner wall of the lower mold section 43.

[0050] The processing method of this embodiment:

[0051] A two-stage mold manufacturing method for a self-heating food blow molding box, using a two-stage blow molding mold for a self-heating food blow molding box and the following steps:

[0052] The water level mark protrusion module 41 is arranged on the inner wall of the lower mold section 43;

[0053] Select the lower mold section 43 with the corresponding height according to the height of the target blow molding box;

[0054] Select the lower mold section 43 with the corresponding size water level mark protrusion module 41 according to the setting position and size characteristics of the water level mark protrusion 11 of the target blow molding box.

[0055] Embodiment 3: The multi-stage processing mold and processing method of Embodiment 1

[0056] A multi-stage blow molding die for a blow molded box for self-heating food, including a water level marking protrusion module 41 for forming a water level marking protrusion 11. The water level marking protrusion module 41 is arranged on the inner wall of the die 4. The die 4 includes an upper die section 42, a section A 46, a section B 47, a section C 45 and a bottom section 44. The upper die section 42 is used for forming the top of the blow molded box 1, the bottom section 44 is used for forming the bottom of the blow molded box 1, and the section A 46, the section B 47 and the section C 45 are used for forming the wall of the blow molded box 1. The water level marking protrusion module 41 is arranged at least at one position among the inner walls of the section A 46, the inner wall of the section B 47 and the inner wall of the section C 45.

[0057] The processing method of this embodiment:

[0058] A multi-stage die manufacturing method for a blow molded box for self-heating food, characterized by using a multi-stage blow molding die for a blow molded box for self-heating food as claimed in claim 3 and the following steps:

[0059] The water level marking protrusion module 41 is arranged on the inner wall of the section B 47;

[0060] Select a combination of the section A 46, the section B 47 and the section C 45 that can meet the height of the target blow molded box according to the height of the target blow molded box;

[0061] According to the setting position and dimensional characteristics of the water level marking protrusion 11 of the target blow molded box, select the section B 47 with a water level marking protrusion module 41 of corresponding dimensions.

[0062] It should be noted that in the description of the invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc. is the description of the structure of the present invention based on the drawings shown, only for the convenience of describing the present invention simply, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention.

[0063] For the "first" and "second" in this technical solution, they are only the appellation distinctions for the same or similar structures, or the corresponding structures with similar functions, not the arrangement of the importance of these structures, nor are there any sorting, or comparing sizes, or other meanings.

[0064] In addition, unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two structures. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the general idea of the present invention and in connection with the specific circumstances of this solution.

Claims

1. A blow - molded box for self - heating food and its usage method. The blow - molded box (1) is used to place either the food to be heated or the heating pack. The heating pack is a heating pack that generates heat when it comes into contact with water. A water - level marking protrusion (11) is provided on the blow - molded box (1). Characterized in that: A temperature - sensitive color - changing layer (2) is provided on the water - level marking protrusion (11). The temperature - sensitive color - changing layer (2) is used to sense the temperature of the environment where the blow - molded box (1) is located. The temperature - sensing range of the temperature - sensitive color - changing layer (2) is 0 - 20 °C. The usage method includes that the user selects the amount of water to be added to submerge the temperature - sensitive color - changing layer (2) according to the color of the temperature - sensitive color - changing layer (2).

2. A two - stage blow - molding die for a blow - molded box for self - heating food, which is used to manufacture the blow - molded box for self - heating food described in Claim 1. It includes a water - level marking protrusion module (41). The water - level marking protrusion module (41) is used to form the water - level marking protrusion (11). The water - level marking protrusion module (41) is arranged on the inner wall of the die (4). Characterized in that: The die (4) includes an upper die section (42) and a lower die section (43). The upper die section (42) is used to form the top of the blow - molded box (1), and the lower die section (43) is used to form the bottom of the blow - molded box (1). The water - level marking protrusion module (41) is arranged at least at one position on the inner wall of the upper die section (42) and the inner wall of the lower die section (43).

3. A multi - stage blow - molding die for a blow - molded box for self - heating food, which is used to manufacture the blow - molded box for self - heating food described in Claim 1. It includes a water - level marking protrusion module (41). The water - level marking protrusion module (41) is used to form the water - level marking protrusion (11). The water - level marking protrusion module (41) is arranged on the inner wall of the die (4). Characterized in that: The die (4) includes an upper die section (42), section A (46), section B (47), section C (45), and a bottom section (44). The upper die section (42) is used to form the top of the blow - molded box (1), the bottom section (44) is used to form the bottom of the blow - molded box (1), sections A (46), B (47), and C (45) are used to form the wall of the blow - molded box (1). The water - level marking protrusion module (41) is arranged at least at one position on the inner wall of section A (46), the inner wall of section B (47), and the inner wall of section C (45).

4. A two - stage die manufacturing method for a blow - molded box for self - heating food Characterized in that: Use the two - stage blow - molding die for a blow - molded box for self - heating food described in Claim 2 and the following steps: The water - level marking protrusion module (41) is arranged on the inner wall of the lower die section (43); Select the lower die section (43) with the corresponding height according to the height of the target blow - molded box; Select the lower die section (43) with the corresponding water - level marking protrusion module (41) having the corresponding size according to the setting position and size characteristics of the water - level marking protrusion (11) of the target blow - molded box.

5. A multi - stage die manufacturing method for a blow - molded box for self - heating food Characterized in that: Use the multi - stage blow - molding die for a blow - molded box for self - heating food described in Claim 3 and the following steps: The water level marking protrusion module (41) is arranged on the inner wall of section B (47); Select the combination of section A (46), section B (47), and section C (45) that can meet the height of the target blow molding box according to the height of the target blow molding box; Section B (47) of the water level marking protrusion module (41) with corresponding dimensions according to the setting position and dimension characteristics of the water level marking protrusion (11) of the target blow molding box.

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