A blow-molded box for self-heating food, a production mold and a production method

Abstract

This invention discloses a blow-molded box for self-heating food, a production mold, and a production method, relating to the field of blow-molded box and production technology. This blow-molded box for self-heating food is used to hold food to be heated or a heating pack, wherein the heating pack is a water-activated heating pack. The blow-molded box has a raised water level indicator, and a temperature-sensitive color-changing layer is provided on the raised water level indicator. By adding a temperature-sensitive color-changing layer to the raised water level indicator, the color can be changed within a range of 0-20℃, allowing the operator to select the corresponding amount of water to add. For example, selecting a temperature-sensitive color-changing layer that changes from blue to red within the 0-20℃ range allows water to be added to submerge the upper edge of the water level line (the temperature-sensitive color-changing layer) when the color-changing layer is reddish, and water to submerge the lower edge of the water level line (the temperature-sensitive color-changing layer) when the color-changing layer is bluish, ultimately achieving precise heating of the food.

Description

Technical Field

[0001] This invention relates to the field of blow molding box and manufacturing technology, specifically to a blow molding box for self-heating food, a production mold, and a production method. Background Technology

[0002] Blow-molded boxes are used as self-heating containers or food trays for self-heating foods due to their ease of production and low production cost. To ensure that the self-heating pack has enough water to meet the heating requirements, water level lines are usually set on the inner wall of the self-heating box (too little water in the self-heating box will result in insufficient heating of the heating pack, while too much water will cause a large amount of heat to be absorbed by the water and not heat the food; too little water in the food tray will result in insufficient brewing of the self-heating food, while too much water will result in insufficient heating of the food). Considering the characteristics of the self-heating food quantity and ambient temperature, traditional water level line markings are not sufficient to meet its heating requirements.

[0003] In the existing technology, the mold for blow-molded boxes is a one-piece mold, which can only produce heating boxes or food trays with a fixed water level. If used in colder or hotter regions, it is necessary to select the corresponding heating pack and water level. The one-piece mold can no longer meet such production needs. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a blow-molded box for self-heating food, a production mold, and a production method, solving the following technical problems:

[0006] 1. The existing water level lines in self-heating foods cannot meet the need to adjust the amount of water added when the ambient temperature changes;

[0007] 2. Existing blow molding box molds with water level lines cannot adjust the position of the water level lines.

[0008] (II) Technical Solution

[0009] A blow-molded box for self-heating food is provided, wherein the blow-molded box is used to hold one of the food to be heated and a heating pack, wherein the heating pack is a water-heating pack, the blow-molded box is provided with a water level indicator protrusion, and the water level indicator protrusion is provided with a temperature-sensitive color-changing layer, the temperature-sensitive color-changing layer is used to sense the temperature of the environment in which the blow-molded box is located, the temperature sensing range of the temperature-sensitive color-changing layer is 0 to 20°C, and the user can select the amount of water to add to submerge the temperature-sensitive color-changing layer according to the color of the temperature-sensitive color-changing layer.

[0010] A two-section blow molding mold for a self-heating food blow molding box is disclosed. The mold includes a water level indicator protrusion module for forming water level indicator protrusions. The water level indicator protrusion module is disposed on the inner wall of the mold. The mold includes an upper section and a lower section. The upper section is used to form the top of the blow molding box, and the lower section is used to form the bottom of the blow molding box. The water level indicator protrusion module is disposed at least at one position on the inner wall of the upper section and the inner wall of the lower section.

[0011] A multi-segment blow molding mold for a self-heating food blow molding box is disclosed. The mold includes a water level indicator protrusion module for forming water level indicator protrusions. The water level indicator protrusion module is disposed on the inner wall of the mold. The mold includes an upper section, section A, section B, section C, and a bottom section. The upper section is used to form the top of the blow molding box, the bottom section is used to form the bottom of the blow molding box, and sections A, B, and C are used to form the walls of the blow molding box. The water level indicator protrusion module is disposed at least at one of the inner walls of section A, section B, and section C.

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

[0013] The water level indicator protrusion module is set on the inner wall of the lower section of the mold;

[0014] Select the appropriate mold lower section height based on the target blow-molded box height;

[0015] Select the corresponding mold lower section with a water level indicator protrusion module of the appropriate size based on the setting position and size characteristics of the target blow molding box water level indicator protrusion.

[0016] A method for manufacturing a multi-segment blow molding box for self-heating food, comprising a multi-segment blow molding mold for self-heating food and the following steps:

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

[0018] Select a combination of segments A, B, and C that can meet the height requirements of the target blow-molded box;

[0019] Based on the location and size characteristics of the target blow-molded box water level indicator protrusion, segment B is a water level indicator protrusion module with corresponding dimensions.

[0020] (III) Beneficial Effects

[0021] This invention provides a blow-molded box for self-heating food, a production mold, and a production method. It possesses the following features:

[0022] Beneficial effects:

[0023] (1) The blow molding box, production mold and production method for self-heating food can change color in the range of 0 to 20°C by adding a temperature-sensitive color-changing layer on the water level protrusion. This allows the operator to select the corresponding amount of water to add. For example, if the temperature-sensitive color-changing layer changes from blue to red in the range of 0 to 20°C, water can be added to submerge the upper edge of the water level line (temperature-sensitive color-changing layer) when the temperature-sensitive color-changing layer is reddish, and water can be added to submerge the lower edge of the water level line (temperature-sensitive color-changing layer) when the temperature-sensitive color-changing layer is bluedish, thus achieving precise heating of the food.

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

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

[0026] Figure 2 for Figure 1 Enlarged view of section A in the image;

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

[0028] Figure 4 A structural diagram of a traditional mold for blow-molded boxes;

[0029] Figure 5 This is a structural diagram of the two-section blow molding box manufacturing mold of the present invention;

[0030] Figure 6 for Figure 5 Enlarged view of section B in the image;

[0031] Figure 7 This is a structural diagram of the multi-segment blow molding box manufacturing mold of the present invention.

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

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1:

[0035] A blow-molded box for self-heating food, the blow-molded box 1 is used to hold one of the food to be heated or a heating pack. The heating pack is a heating pack that heats up when it comes into contact with water. The blow-molded box 1 is provided with a water level indicator protrusion 11. A temperature-sensitive color-changing layer 2 is provided on the water level indicator protrusion 11. The temperature-sensitive color-changing layer 2 is used to sense the temperature of the environment in which the blow-molded box 1 is located. The temperature sensing range of the temperature-sensitive color-changing layer 2 is 0 to 20°C, and the corresponding color change is blue and red. The user can select 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] in:

[0037] The blow-molded box 1 is used to hold food to be heated or a heating pack. Although the uses are different, the principle of indicating the water addition position in this invention is the same.

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

[0039] When used as a heating box:

[0040] First, place 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 indicates that the ambient temperature is low. It is recommended to add less water (to avoid insufficient heating of food due to adding too much water). At this time, the amount of water added should just submerge the lower edge of the water level indicator protrusion 11.

[0041] If the color of the temperature-sensitive color-changing layer 2 is red, it indicates that the ambient temperature is high. It is recommended to add more water (to allow the water to absorb some heat and avoid overheating, which would affect the taste of the food). At this time, the amount of water added should just submerge the upper edge of the water level indicator protrusion 11.

[0042] When used as a food tray:

[0043] First, place 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 indicates that the ambient temperature is low. It is recommended to add less water (to avoid insufficient heating of the food due to adding too much water). At this time, the amount of water added should just submerge the lower edge of the water level indicator protrusion 11.

[0044] If the color of the temperature-sensitive color-changing layer 2 is red, it indicates that the ambient temperature is high. It is recommended to add more water (to allow the water to absorb some heat and avoid overheating, which would affect the taste of the food). At this time, the amount of water added should just submerge the upper edge of the water level indicator protrusion 11.

[0045] The height of a typical dish tray is relatively low, so the range of adjustable water volume is correspondingly reduced. However, this invention may be applicable to taller dish trays (to facilitate the installation of water level indicator protrusions 11 with a certain height).

[0046] When using this embodiment as a food tray, it is essential to select materials suitable for food and materials that can withstand temperatures up to 120°C.

[0047] When using this embodiment as a heating box, it is essential to select food-grade materials that are chemically stable and heat-resistant to avoid altering the chemical properties of the water in the heating box during the heating process, thereby affecting the material of the heating box itself.

[0048] Example 2: Two-section processing mold and processing method of Example 1

[0049] A two-section blow molding mold for a self-heating food blow molding box includes a water level indicator protrusion module 41. The water level indicator protrusion module 41 is used to form a water level indicator protrusion 11. The water level indicator protrusion module 41 is disposed 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 indicator protrusion module 41 is disposed 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 in this embodiment:

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

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

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

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

[0055] Example 3: Multi-segment machining mold and machining method of Example 1

[0056] A multi-segment blow molding mold for a self-heating food blow molding box includes a water level indicator protrusion module 41. The water level indicator protrusion module 41 is used to form a water level indicator protrusion 11. The water level indicator protrusion module 41 is disposed on the inner wall of the mold 4. The mold 4 includes an upper mold section 42, a section A 46, a section B 47, a section C 45, and a bottom section 44. The upper mold section 42 is used to form the top of the blow molding box 1, the bottom section 44 is used to form the bottom of the blow molding box 1, and sections A 46, B 47, and C 45 are used to form the walls of the blow molding box 1. The water level indicator protrusion module 41 is disposed 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.

[0057] The processing method in this embodiment:

[0058] A method for manufacturing a multi-segment mold for a blow-molded box for self-heating food, characterized by using a multi-segment blow-molded mold for a blow-molded box for self-heating food according to claim 3 and the following steps:

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

[0060] Select a combination that meets the height requirements of segment A (46), segment B (47), and segment C (45) based on the height of the target blow-molded box.

[0061] Based on the setting position and size characteristics of the target blow-molded box water level indicator protrusion 11, segment B 47 of the corresponding size water level indicator protrusion module 41 is constructed.

[0062] It should be noted that in the description of the invention, the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the description of the structure of the invention shown in the accompanying drawings. They are only for the convenience of describing the invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0063] The terms "first" and "second" in this technical solution are merely designations for corresponding structures that are identical or similar, or that perform similar functions. They do not represent an arrangement of the importance of these structures, nor do they imply any ranking, comparison of size, or other meaning.

[0064] Furthermore, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, a 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two structures. Those skilled in the art can understand the specific meaning of the above terms in this invention by considering the overall concept of the invention and the specific context of the solution.

Claims

1. A blow-molded box for self-heating food manufactured by a multi-segment mold, wherein the blow-molded box (1) is used to hold food to be heated and a heating pack, wherein the heating pack is a water-heating pack, and the blow-molded box (1) is provided with a water level indicator protrusion (11), characterized in that: A temperature-sensitive color-changing layer (2) is provided on the water level indicator 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℃. The user selects the amount of water to add to submerge the thermochromic layer (2) based on the color of the thermochromic layer (2); The multi-segment mold includes a water level indicator protrusion module (41), which is used to form a water level indicator protrusion (11). The water level indicator protrusion module (41) is disposed on the inner wall of the mold (4). The mold (4) includes an upper section (42), a section A (46), a section B (47), a section C (45), and a bottom section (44). The upper 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). The sections A (46), B (47), and C (45) are used to form the walls of the blow-molded box (1). The water level indicator protrusion module (41) is disposed at least at one of the inner walls of the sections A (46), B (47), and C (45). The water level indicator protrusion module (41) is set on the inner wall of section B (47); The combination of height segments A (46), B (47), and C (45) should be selected based on the height of the target blow-molded box. According to the setting position and size characteristics of the target blow molding box water level indicator protrusion (11), the B segment (47) of the water level indicator protrusion module (41) with the corresponding size.

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