A transparent heating vessel and a method for manufacturing the same

Abstract

The application belongs to the technical field of heating utensils, and relates to a transparent heating utensil and a preparation method thereof. The transparent heating utensil comprises a utensil main body, the utensil main body has at least one cavity part, and the utensil main body is a transparent silicone rubber part; a decorative ring is arranged at the edge of the utensil main body, the inner edge surface of the decorative ring is provided with a groove, a support frame is fixed in the groove, and the edge of the utensil main body extends into the opening of the groove and is integrally connected with the support frame and the decorative ring. The application provides a transparent heating utensil with a novel structure, and users can observe the color change of the side or bottom of food through the utensil main body, which is beneficial to the judgment of the baking or heating condition of the food.

Description

Technical Field

[0001] This invention belongs to the technical field of heating vessels, and relates to a transparent heating vessel and a method for preparing a transparent heating vessel. Background Technology

[0002] Traditional baking pans are made entirely of metal, making it difficult to remove food after baking, prone to deformation, and leaving residue that is hard to clean. Scratches on the pan surface can also lead to corrosion from acids and alkalis, causing rust and posing food safety risks. To overcome these shortcomings, all-silicone baking pans have emerged. Silicone pans are heat-resistant, reducing the risk of burns, and their soft texture makes them easy to unmold and clean after baking. Currently, most commercially available baking pans are made of opaque silicone, preventing users from observing the color changes on the sides or bottom of food during baking. This hinders users from controlling baking time and temperature based on surface color changes, negatively impacting the baking experience.

[0003] Furthermore, most current silicone baking pan structures are surrounded by metal plates to strengthen the support around the pan. However, this type of covering structure has the following drawbacks: during the preparation process, the instantaneous impact force of the injected silicone material is too large, causing the metal plate placed in the mold to shift, resulting in uneven covering or even no covering at all. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a transparent heating vessel and its preparation method.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A transparent heating vessel, characterized in that it comprises:

[0007] A vessel body having at least one cavity portion;

[0008] A decorative ring is disposed on the edge of the vessel body. The inner edge of the decorative ring has a groove, and a support frame is fixed in the groove. The edge of the vessel body extends into the opening of the groove and is integrally connected with the support frame and the decorative ring.

[0009] Preferably, the main body of the vessel is made of transparent silicone rubber.

[0010] Preferably, the vessel body is prepared from raw materials including transparent fumed silicone rubber and vulcanizing agent A.

[0011] Preferably, the decorative ring is a colored silicone rubber part.

[0012] Preferably, the decorative ring is prepared from raw materials including precipitated silicone rubber, vulcanizing agent B, and silicone masterbatch.

[0013] Preferably, the shape of the support frame and the shape of the decorative ring are consistent with the edge contour shape of the vessel body.

[0014] Preferably, the support frame is a metal bracket made of a metal with a melting point > 300°C.

[0015] Another objective of this invention can be achieved through the following technical solutions:

[0016] A method for preparing a transparent heating vessel includes the following steps:

[0017] S1. The surface of the support frame is coated with glue, dried, and then placed in the decorative ring mold. The mold is heated, and the raw material for preparing the decorative ring is injected to cover the support frame. Then, a vulcanization molding process is performed to obtain a decorative ring covered with the support frame.

[0018] S2. Place the decorative ring covered with the support frame into the mold of the main body of the vessel, heat it, inject the raw materials for preparing the main body of the vessel, and perform a vulcanization molding process to obtain a transparent heating vessel.

[0019] Preferably, the raw materials for preparing the decorative ring include precipitated silicone rubber, a first vulcanizing agent, and color masterbatch;

[0020] The raw materials for preparing the main body of the vessel include transparent fumed silicone rubber and a second vulcanizing agent.

[0021] Preferably, the conditions for the single vulcanization molding in step S1 and the single vulcanization molding in step S2 each include: a temperature of 150-200°C, a time of 3-10 minutes, and a mold closing pressure of 100-250 tons.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In this invention, the decorative ring covered with a support frame and the main body of the vessel are formed separately, the support frame is effectively fixed and is not easy to shift, and a decorative ring covered with a support frame with uniform coverage and shape can be obtained.

[0024] 2. The main body of the container of the present invention is a transparent silicone rubber part, which allows users to observe the color changes of the side or bottom of the food through the main body of the container, which helps users to judge the baking or heating status of the food.

[0025] 3. The present invention uses a metal bracket as a support frame, which has better stability than polymer. Attached Figure Description

[0026] Figure 1 This is a half-sectional schematic diagram of the heating vessel of the present invention.

[0027] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0028] Figure 3 This is a schematic diagram of the structure of the first type of heating vessel of the present invention.

[0029] Figure 4 This is a schematic diagram of the structure of a second type of heating vessel according to the present invention.

[0030] Figure 5 This is a schematic diagram of the third type of heating vessel of the present invention.

[0031] Figure 6 This is a schematic diagram of the fourth type of heating vessel of the present invention.

[0032] Figure 7 This is a schematic diagram of the fifth type of heating vessel of the present invention.

[0033] Figure 8 This is a schematic diagram of the sixth type of heating vessel of the present invention.

[0034] In the diagram, 100 is the main body of the vessel; 110 is the cavity; 200 is the decorative ring; 210 is the groove; and 300 is the support frame. Detailed Implementation

[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0036] like Figure 1-8 As shown, a transparent heating vessel includes: a vessel body 100 and a decorative ring 200. The vessel body 100 has at least one cavity portion 110. The decorative ring 200 is disposed on the edge of the vessel body 100. The inner edge surface of the decorative ring 200 has a groove 210. A support frame 300 is fixed in the groove 210. The edge of the vessel body 100 extends into the opening of the groove 210 and is integrally connected to the support frame 300 and the decorative ring 200.

[0037] The heating vessel can be of different sizes or styles. The vessel body 100 is the main part of the heating vessel. The vessel body 100 is characterized by being made of transparent flexible material. The cavity 110 is used to place food to be baked or heated.

[0038] Preferably, the container body 100 is made of transparent silicone rubber. Since the container body 100 is transparent, the user can observe the color changes on the side or bottom of the food through the container body 100, which helps the user to judge the baking or heating status of the food.

[0039] Preferably, the light transmittance of the vessel body 100 is ≥80%.

[0040] Preferably, the vessel body 100 is prepared from raw materials including transparent fumed silicone rubber and vulcanizing agent A.

[0041] Transparent fumed silica rubber refers to silicone rubber that uses fumed silica as a reinforcing filler and has a transparent appearance. The raw material components of transparent fumed silica rubber can include: raw silicone rubber, fumed silica, and other auxiliary materials, such as structure control agents (e.g., hydroxyl silicone oil). Examples of raw silicone rubber include dimethyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, and methyl trifluoropropyl silicone rubber. The raw silicone rubber, fumed silica, and other auxiliary materials are compounded to form transparent fumed silica rubber.

[0042] Preferably, vulcanizing agent A is a vulcanizing agent for silicone rubber, and more preferably, a platinum vulcanizing agent. The amount of vulcanizing agent A added is 0.2% to 5.0% of the mass of the transparent fumed silica rubber.

[0043] Preferably, the decorative ring 200 is a colored silicone rubber part.

[0044] Preferably, the decorative ring 200 is prepared from raw materials including precipitated silicone rubber, vulcanizing agent B and silicone masterbatch.

[0045] Precipitated silica silicone rubber refers to silicone rubber that uses precipitated silica as a reinforcing filler, and it is opaque or translucent in appearance. The raw material components of precipitated silica silicone rubber can include: raw silicone rubber, precipitated silica, and other auxiliary materials, such as structure control agents (e.g., hydroxyl silicone oil). Examples of raw silicone rubber include dimethyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, and methyl trifluoropropyl silicone rubber. Precipitated silica silicone rubber is formed by mixing raw silicone rubber, precipitated silica, and other auxiliary materials.

[0046] Silicone masterbatch refers to a special colorant for silicone formed by concentrating substances including pigments into a resin matrix, which can impart different colors to silicone products. This invention adds silicone masterbatch to the raw materials used in the preparation of the decorative ring 200. The decorative ring 200 can display the color of the corresponding masterbatch, improving the product's aesthetics and satisfying different users' color preferences.

[0047] The type of silicone masterbatch in this invention is not limited; any commercially available silicone masterbatch can be mixed with precipitation-processed silicone rubber to prepare the decorative ring 200. Furthermore, the content of silicone masterbatch in this invention is not limited, as long as the amount of silicone masterbatch added ensures that the color of the decorative ring 200 meets the product color requirements.

[0048] Preferably, vulcanizing agent B is a vulcanizing agent for silicone rubber, and more preferably a platinum vulcanizing agent. The amount of vulcanizing agent B added is 0.2% to 5.0% of the mass of the precipitated silicone rubber. Vulcanizing agent A and vulcanizing agent B can be the same or different.

[0049] Preferably, the shapes of the support frame 300 and the decorative ring 200 are consistent with the edge contour of the vessel body 100. The decorative ring 200 surrounds the outer edge of the vessel body 100 and encloses the support frame 300. The support frame 300 acts as a skeleton to give the decorative ring 200 a certain rigidity, so the entire vessel body 100 can be supported by the support frame 300 during use.

[0050] In the actual structure, the support frame 300 is a metal bracket, and the decorative ring 200 covers the metal bracket, so there will be no situation where the user is burned.

[0051] Preferably, the support frame 300 is a metal bracket made of a metal with a melting point > 300°C. The type of metal used to prepare the support frame 300 is not particularly limited, as long as its melting point is > 300°C; it can be an elemental metal or a metal alloy. Iron and its alloys, such as stainless steel, are preferred.

[0052] The support frame formed by polymers may have weld lines, which may lead to breakage during use. This invention uses a metal support frame, which has better stability compared to polymers.

[0053] In other embodiments of the present invention, a method for preparing a transparent heating vessel is also provided, comprising the following steps:

[0054] S1. The surface of the support frame 300 is coated with glue, dried, and placed in the decorative ring mold. It is heated and the raw material for preparing the decorative ring 200 is injected to cover the support frame 300. Then, a vulcanization molding process is performed to obtain the decorative ring 200 covered with the support frame 300.

[0055] S2. Place the decorative ring 200 covering the support frame 300 into the vessel body mold, heat it, inject the raw materials for preparing the vessel body 100, and perform a vulcanization molding process to obtain a transparent heating vessel.

[0056] The decorative ring mold and the vessel body mold correspond to the shape of the obtained product and are designed according to the actual product shape.

[0057] Preferably, the raw materials for preparing the decorative ring 200 include precipitated silicone rubber, vulcanizing agent B, and color masterbatch. The precipitated silicone rubber, vulcanizing agent B, and color masterbatch are vulcanized to form the decorative ring 200.

[0058] Preferably, the raw materials for preparing the vessel body 100 include transparent fumed silicone rubber and vulcanizing agent A. The transparent fumed silicone rubber and vulcanizing agent A form the vessel body after a vulcanization reaction.

[0059] Preferably, in step S1, the temperature for the primary vulcanization molding is 150–200°C, the time is 3–10 minutes, and the mold closing pressure is 100–250 tons; in step S2, the temperature for the primary vulcanization molding is 150–200°C, the time is 3–10 minutes, and the mold closing pressure is 100–250 tons. The conditions for the primary vulcanization molding in step S1 and step S2 can be the same or different.

[0060] In existing technologies, the support frame is directly covered by the vessel body. This results in excessive instantaneous impact force from the injected silicone material, causing the support frame placed in the mold to shift, leading to uneven coverage or even no coverage at all. In this invention, the decorative ring covered by the support frame is molded separately from the vessel body. The support frame is effectively fixed, preventing shifting, and resulting in a decorative ring with uniform coverage and shape.

[0061] It should be noted that the transparent heating vessel of the present invention is used for food preparation, and all raw materials are preferably food-grade.

[0062] The technical solution of the present invention will be further described and illustrated below through specific embodiments. It should be understood that the specific embodiments described herein are only for the purpose of helping to understand the present invention and are not intended to limit the present invention. Unless otherwise specified, the raw materials used in the embodiments of the present invention are all commonly used raw materials in the art, and the methods used in the embodiments are all conventional methods in the art.

[0063] In the following examples, the precipitated silicone rubber is model AS605S and the transparent vapor phase silicone rubber is model AS5685S.

[0064] Example 1

[0065] The method for preparing the transparent heating vessel in this embodiment includes the following steps:

[0066] S1. Coat the surface of the iron metal support frame 300 with food-grade adhesive, dry it, place it in a decorative ring mold, heat it to 180°C, and inject precipitated silicone rubber, platinum vulcanizing agent, and red silicone masterbatch (the mass ratio of precipitated silicone rubber, platinum vulcanizing agent, and silicone masterbatch is 98.78:1.18:0.04) to cover the support frame 300. Then, perform a vulcanization molding process (180°C, 6 min, mold closing pressure of 250 tons). After cooling, a decorative ring 200 covering the support frame 300 is obtained. The decorative ring 200 is red.

[0067] S2. Place the decorative ring 200 covering the support frame 300 into the vessel body mold, heat to 180°C, and inject the raw materials for preparing the vessel body 100: transparent fumed silicone rubber and platinum vulcanizing agent (the mass ratio of transparent fumed silicone rubber to platinum vulcanizing agent is 98.8:1.2). Part of the raw materials for preparing the vessel body 100 enter the opening of the groove 210 and come into contact with the support frame 300 and the decorative ring 200. Perform a vulcanization molding process (180°C, 6 min, mold closing pressure of 250 tons). After cooling, a transparent heating vessel is obtained.

[0068] Example 2

[0069] The method for preparing the transparent heating vessel in this embodiment includes the following steps:

[0070] S1. Coat the surface of the iron metal support frame 300 with food-grade adhesive, dry it, place it in a decorative ring mold, heat it to 160°C, and inject liquid precipitated silicone rubber, platinum vulcanizing agent, and blue silicone masterbatch (mass ratio of precipitated silicone rubber, platinum vulcanizing agent, and silicone masterbatch 98.21:1.65:0.14) to cover the support frame 300. Then perform a vulcanization molding process (160°C, 8 min, mold closing pressure of 250 tons). After cooling, a decorative ring 200 covering the support frame 300 is obtained. The decorative ring 200 is red and blue in color.

[0071] S2. Place the decorative ring 200 covering the support frame 300 into the vessel body mold, heat to 170°C, and inject the raw materials for preparing the vessel body 100: liquid transparent fumed silicone rubber and platinum vulcanizing agent (the mass ratio of transparent fumed silicone rubber to platinum vulcanizing agent is 98.6:1.4). Part of the raw materials for preparing the vessel body 100 enter the opening of the groove 210 and come into contact with the support frame 300 and the decorative ring 200, and perform a vulcanization molding process (170°C, 7 min, mold closing pressure of 250 tons). After cooling, a transparent heating vessel is obtained.

[0072] The transparent heating vessels of Examples 1 and 2 were subjected to heat resistance and heat resistance tests, and the volatile organic compounds (VOM) were tested. The results are shown in Table 1.

[0073] Table 1

[0074]

[0075] As shown in Table 1, the transparent heating vessel prepared by this invention can be used at both high and low temperatures, and the volatile organic compound (VOM) is less than 0.5%, which meets the food-grade standard.

[0076] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0077] Furthermore, in this invention, descriptions involving "first," "second," "a," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0078] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; 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 the internal connection of two elements or the interaction between two elements, unless otherwise explicitly limited.

[0079] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A method for preparing a transparent heating vessel, characterized in that, The heating vessel includes: a vessel body and a decorative ring; the vessel body has at least one cavity, the decorative ring is disposed on the edge of the vessel body, the inner edge of the decorative ring has a groove, a support frame is fixed in the groove and the support frame is covered by the decorative ring, and the edge of the vessel body extends into the opening of the groove and is integrally connected with the support frame and the decorative ring. The preparation method includes the following steps: S1. The surface of the support frame is coated with glue, dried, and then placed in a decorative ring mold. The mold is heated, and the raw material for preparing the decorative ring is injected to cover the support frame. Then, a vulcanization molding process is performed to obtain a decorative ring that covers the support frame. The inner edge of the decorative ring forms a groove. S2. Place the decorative ring covered with the support frame into the mold of the vessel body, heat it, and inject the raw material for preparing the vessel body. Part of the raw material for preparing the vessel body enters the opening of the groove and contacts the support frame and the decorative ring. Perform a vulcanization molding process to obtain the transparent heating vessel.

2. The preparation method according to claim 1, characterized in that, The shape of the support frame and the shape of the decorative ring are consistent with the edge contour shape of the vessel body.

3. The preparation method according to claim 1, characterized in that, The support frame is a metal bracket made of a metal with a melting point >300°C.

4. The preparation method according to claim 1, characterized in that, The decorative ring is a colored silicone rubber part.

5. The preparation method according to claim 4, characterized in that, The raw materials for preparing the decorative ring include precipitated silicone rubber, vulcanizing agent B, and color masterbatch; the precipitated silicone rubber, vulcanizing agent B, and color masterbatch are vulcanized to form the decorative ring.

6. The preparation method according to claim 5, characterized in that, Vulcanizing agent B is a vulcanizing agent for silicone rubber. The amount of vulcanizing agent B added is 0.2~5.0% of the mass of the precipitated silicone rubber.

7. The preparation method according to claim 1, characterized in that, The main body of the vessel is made of transparent silicone rubber.

8. The preparation method according to claim 7, characterized in that, The raw materials for preparing the vessel body include transparent fumed silicone rubber and vulcanizing agent A; the transparent fumed silicone rubber and vulcanizing agent A are vulcanized to form the vessel body.

9. The preparation method according to claim 8, characterized in that, Vulcanizing agent A is a vulcanizing agent for silicone rubber. The amount of vulcanizing agent A added is 0.2~5.0% of the mass of transparent fumed silicone rubber.

10. The preparation method according to claim 1, characterized in that, The conditions for the single vulcanization molding in step S1 and the single vulcanization molding in step S2 are respectively: temperature of 150~200℃, time of 3~10min, and mold closing pressure of 100~250 tons.

Images