Tray for dumpling powder printing

Abstract

The utility model relates to the field of dumpling powder printing, and discloses a tray for dumpling powder printing, which comprises a tray body provided with a bearing surface for bearing dumplings with the bottoms dipped with water; the plurality of concave mold cavities are uniformly distributed on the bearing surface of the tray body and are used for containing powder materials for printing, and the depth of each concave mold cavity is between 0.3 mm and 0.7 mm; when the bottoms of the dumplings are dipped in water and are in contact with the concave mold cavities filled with the powder, the powder materials can be adsorbed and adhered to the bottoms of the dumplings through moisture on the surfaces of the dumplings, and after cooking, the powder materials and dumpling wrappers are subjected to gelatinization reaction to form integrated printing which cannot be stripped from the dumplings; the powder in the concave mold cavities is adhered to the surfaces of the dumplings in a mode of dipping the dumplings in water to form the patterns, and compared with a traditional scheme, the dumpling wrappers are not concave or protruded during printing, equivalently, the structures of the dumpling wrappers are not changed, demolding is easy, the dumpling wrappers cannot be torn, and the risk that the dumpling wrappers are boiled to be broken can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dumpling powder printing, and more specifically, to a tray for dumpling powder printing. Background Art

[0002] During festivals, according to tradition, patterns symbolizing peace, good luck, prosperity and wealth, such as "Fu" (happiness), "Lu" (emolument), "Shou" (longevity), "An" (peace), "Xi" (double happiness), "Making a Fortune", etc., are generally printed on some flour-based foods such as pastries. Eating these flour-based foods with printed patterns represents a wish for a safe, auspicious, happy and fulfilling life in the days to come. This is not only an aspiration and expectation for a happy life, but also a beautiful prayer full of hope for the future.

[0003] The utility model patent with the application number 200620161936.3 discloses a food character mold tray, which includes a tray body. On the top surface of the tray body, there are reverse character molds of auspicious characters that are recessed or protruded from its disk surface. On the bottom surface of the tray body, there are support rods, and on the top surface of the tray body relative to the top of the support rods, there are concave holes corresponding to the positions and shapes of the support rods. As long as the raw flour-based food is placed on the reverse character molds on the top surface of the tray body, it is convenient to form Chinese characters or characters that are recessed or protruded from the surface of the food on the surface of the food. Its use is simple, it is convenient to stack with each other, and it occupies less space. It is suitable for the further reprocessing of flour-based raw foods such as dumplings and steamed buns.

[0004] In practice, when the above-mentioned solution is used to emboss and print dumplings, the thickness of the dumpling wrapper is an important factor to be considered. An ideal dumpling wrapper should be slightly thicker in the middle (to prevent breaking during cooking) and thinner at the edges (for better sealing and a better taste when eaten). After filling with fillings, the thickness of the dumpling wrapper depends on the size of the dumpling, the amount of filling, and the individual's rolling and wrapping techniques. The specific value is difficult to determine, but it is probably in the range of 1 mm to 3 mm. When printing patterns on dumpling wrappers within this range, there are the following defects: Whether it is a recessed or protruded character mold, during embossing, the structure of the dumpling wrapper is changed by the mold to make the dumpling wrapper recessed or protruding. In this way, when demolding, due to the change in the structure of the dumpling wrapper, it is easy to be torn; even if it is not torn, it will increase the risk of breaking during cooking and is not easy to demold. Content of the Utility Model

[0005] The utility model aims to overcome at least one defect of the above-mentioned prior art, and provides a tray for dumpling powder printing, which is used to solve the technical problems that when the existing character mold tray is used to emboss dumplings, it changes the structure of the dumpling wrapper, is easy to break, and is not easy to demold.

[0006] The technical solution adopted by this utility model is a tray for printing powder on dumplings, comprising: a tray body with a bearing surface for bearing dumplings with their bottoms wet; and several recessed cavities evenly distributed on the bearing surface of the tray body for holding the printing powder material, wherein the depth of the recessed cavities is between 0.3mm and 0.7mm; when the bottom of the dumpling is wet and comes into contact with the recessed cavity containing the powder, the powder material can be absorbed by the moisture on the surface of the dumpling and adhere to the bottom of the dumpling. After steaming or boiling, the powder material undergoes a gelatinization reaction with the dumpling skin to form an integral print that cannot be peeled off from the dumpling.

[0007] Gelatinization is a physical change that occurs in powder materials under specific conditions. Its core is the process by which powder particles absorb water, swell, and break down at high temperatures to form a viscous paste-like solution. For example, starch and flour undergo gelatinization. In this solution, powder is filled into a recessed mold cavity with a depth between 0.3mm and 0.7mm. This depth is primarily to control the water-to-powder mass ratio, ensuring that the powder is neither too shallow to form a clear pattern nor too deep to waste powder. The powder in the recessed mold cavity is adhered to its surface by dipping a dumpling in water, forming a print. Compared to traditional methods, the dumpling skin neither sinks nor protrudes during printing, essentially preserving its structure. This makes it easy to demold, prevents tearing, and effectively avoids the risk of the dumpling skin breaking during cooking.

[0008] Furthermore, the peripheral wall of the recessed mold cavity undergoes a draft treatment with a draft angle of 0.5° to 1°, tilted vertically upwards and outwards from the bottom of the recessed mold cavity. Testing has shown that a tilt angle of 0.5° to 1° is optimal, effectively reducing demolding resistance, preventing print detachment due to mold jamming, ensuring smooth demolding, and shortening printing time.

[0009] Furthermore, the tray body's bearing surface is covered with an anti-adhesion material. This material prevents dumplings from sticking to the tray after being wetted, facilitating quick and easy removal and preventing damage to the pattern caused by adhesion. The anti-adhesion material is food-grade polytetrafluoroethylene (PTFE) or food-grade silicone. Food-grade PTFE (Teflon) or food-grade silicone is heat-resistant, non-toxic, and easy to clean, ensuring safe use and extending the tray's lifespan.

[0010] Furthermore, support components are detachably installed on both sides of the bottom of the tray body. The detachable support components facilitate storage and stacking after installation.

[0011] Furthermore, a magnet is installed on the back of the tray body, and a magnet is installed on the top of the support component. The magnet and magnet engage magnetically. This magnetic engagement enables quick installation and removal of the support component without tools, improving convenience and stability. In addition to the magnetic engagement method, other detachable connection methods can also be used, such as bolt connections or snap-fit ​​connections.

[0012] Furthermore, the tray body is provided with side holes, and the support component is provided with a storage groove. When the support component is installed at the bottom of the tray body, the storage groove and the side holes are directly opposite and connected. The connection between the side holes and the storage groove facilitates the collection of excess powder or the replenishment of powder, preventing powder spillage. At the same time, the storage groove hides the holes when the support component is installed, keeping the tray surface clean.

[0013] Furthermore, the shape of the side hole is the same as that of the storage groove, and the size of the side hole is no larger than the size of the storage groove. This shape matching and size not exceeding that of the storage groove ensures precise alignment between the storage groove and the side hole, preventing powder leakage. The length of the side hole is greater than the sum of the projected lengths of several recessed mold cavities arranged on that side along the edge direction and the sum of the distances between several adjacent recessed mold cavities, and less than the side length of the tray body on that side. The elongated design of the side hole ensures coverage of all recessed mold cavity areas, facilitating powder recovery or replenishment when the scraper reaches one side.

[0014] Furthermore, the system also includes a protective cover. A guide and positioning component is circumferentially positioned along the top edge of the tray body. The protective cover is fastened to the surface of the tray body via the guide and positioning component, forming a sealed space with the tray body surface after fastening. The guide and positioning component ensures quick and accurate fastening of the protective cover, achieving a closed connection between the tray and the cover, effectively preventing dust and insects, and protecting the internal contents. The guide and positioning component can be an intermittent guide and positioning rib or a continuous rib ring.

[0015] Furthermore, the protective cover has an annular recess, and the back of the tray body has an annular tray reinforcing rib, which fits into the annular recess. This design allows multiple trays filled with dumplings and covered to be stacked together. When stacking, no supporting components are needed; the tray reinforcing rib of the upper tray body inserts into the annular recess of the lower protective cover to form a positioning mechanism, effectively preventing the upper and lower trays from shifting and falling. Simultaneously, the annular design allows the two trays to rotate relative to each other, facilitating adjustment and layered retrieval.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: In this solution, powder is filled into the recessed mold cavity, and the depth of the recessed mold cavity is between 0.3mm and 0.7mm. This is mainly to control the water-powder ratio, ensuring that the powder material is neither too shallow to form a clear pattern, nor too deep to waste powder. By dipping dumplings in water, the powder in the recessed mold cavity is adhered to its surface to form a print. Compared with the traditional solution, the dumpling skin is neither recessed nor protruding during printing, which is equivalent to not changing the structure of the dumpling skin. It is easy to demold, the dumpling skin will not be torn, and the risk of being broken during cooking can also be effectively avoided. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0018] Figure 2 This is an assembly diagram of the tray body and supporting components according to Embodiment 1 of this utility model.

[0019] Figure 3 This is a schematic diagram of the back of the tray body according to Embodiment 1 of this utility model.

[0020] Figure 4 This is a schematic diagram of the overall structure of the tray body in Embodiment 2 of this utility model.

[0021] Figure 5 This is a schematic diagram of the back of the tray body in Embodiment 2 of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the sealing cover in Embodiment 3 of this utility model.

[0023] In the diagram: 1. Tray body; 2. Recessed cavity; 3. Side hole; 4. Magnet one; 5. Magnet two; 6. Support component; 7. Storage slot; 8. Protective cover; 9. Guide and positioning component; 10. Tray reinforcing rib; 11. Annular recess; 12. Reinforcing rib. Detailed Implementation

[0024] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] Example 1

[0026] A tray for printing powder onto dumplings is designed to allow users to easily print personalized designs on the bottom of dumplings, while ensuring that the designs are both clear and attractive, and easy to demold; such as Figure 1-3As shown, the printing tray includes a tray body 1 and a plurality of recessed cavities 2 disposed thereon, the recessed cavities 2 being arranged in an array. The shape of the recessed cavities 2 can be a font or a pattern.

[0027] These recessed cavities 2 can be filled with edible powders of different colors to print words or patterns in different colors. For example, flour or starch of different colors can be mixed with beet powder, matcha powder, turmeric powder, etc. After filling, the excess flour on the recessed cavity 2 is scraped off with a scraper so that the filled flour is flush with the surface of the tray body 1. Then, the dumplings are dipped in water and placed on the recessed cavity 2 filled with powder and gently pressed. Using the weight of the dumplings and the stickiness of the water, clear raised prints can be formed on the dumpling skin.

[0028] Dipping the dumpling in water involves wetting the bottom of the printed characters (at least the surface opposite the recessed mold cavity 2 should be fully wetted, and the area can be slightly larger than this, but not too large). Do not wet other parts of the dumpling, as excessive water will cause it to become soggy. Generally, the size of commonly available dumplings does not vary much (for example, the difference in dumpling length is usually no more than 2cm), and the size of the bottom of the printed characters also does not vary much, nor does the area opposite the recessed mold cavity 2. If the dumpling is large, a tray with a larger recessed mold cavity 2 can be used; if the dumpling is small, a tray with a smaller recessed mold cavity 2 can be used.

[0029] When the depth of the recessed mold cavity 2 is controlled between 0.3mm and 0.7mm, a better printing effect is achieved. The principle is as follows: This range is mainly to control the water-to-powder ratio, that is, the ratio of water adhering to the bottom surface of the dumpling opposite to the recessed mold cavity 2 to the powder inside the recessed mold cavity 2 (when the dumpling is larger, a larger recessed mold cavity 2 is used, and vice versa, but the water-to-powder ratio is always within a certain range). Through experiments, the depth is controlled between 0.3mm and 0.7mm. This depth range can ensure a clear and three-dimensional printing effect without the font or pattern falling off during the cooking process. After conducting experiments on several depths, it was found that the printed pattern was less vibrant when the depth of the recessed mold cavity 2 was less than 0.3 mm, compared to a depth of 0.3 mm to 0.7 mm. Furthermore, the excessive water-to-powder ratio caused some powder to detach from the dumpling due to poor adhesion. However, when the depth was greater than 0.7 mm, the colored powder in the mold cavity could not be completely adhered, resulting in residual powder and material waste. Therefore, the usable mold cavity depth range that ensures both effective printing and minimal material waste is between 0.3 mm and 0.7 mm, with the optimal depth being 0.5 mm ± 0.05 mm. When the dumpling is dipped in water, the powder in the recessed mold cavity 2 adheres to it. After steaming or boiling, the powder gelatinizes and bonds with the dumpling to form a printed pattern.

[0030] like Figure 2As shown, support components 6 are detachably installed on both sides of the bottom of the tray body 1. Side holes 3 are provided on both sides of the tray body 1. The side holes 3 are elongated structures. Storage slots 7 are provided on the support components 6. When the support components 6 are installed at the bottom of the tray body 1, the storage slots 7 and side holes 3 are directly connected, used to collect excess colored flour scraped off by the scraper. The support components 6 are used to support multiple tray bodies 1 when stacked. Specifically, a magnet 4 is installed on the back of the tray body 1, and a magnet 5 is installed on the top of the support component 6. The support component 6 can be fixed to the tray body 1 by magnetic attraction between magnet 4 and magnet 5; alternatively, threaded connections or bayonet connections can also be used.

[0031] To further improve the demolding effect, the top of the recessed mold cavity 2 is covered with a layer of food-grade anti-stick material, such as food-grade Teflon or food-grade silicone. Both materials have excellent non-stick properties and chemical corrosion resistance, ensuring smooth demolding even in humid environments without damaging the surface.

[0032] Through the above design and adjustments, users can easily make personalized dumplings without complicated equipment or skills, greatly improving production efficiency and increasing the fun and visual appeal of the dumplings.

[0033] To ensure that the printed pattern is clear and easy to demold, the recessed mold cavity 2 or the peripheral wall of the pattern is designed to be inclined vertically upward and outward at a draft angle of 0.5° to 1° from the bottom of the recessed mold cavity 2.

[0034] This solution also includes a protective cover 8. Several guide and positioning components 9 are evenly arranged circumferentially along the top edge of the pallet body 1. The protective cover 8 is fastened to the surface of the pallet body 1 by the guide and positioning components 9, forming a sealed space with the surface of the pallet body 1 after fastening. In this embodiment, the guide and positioning components 9 are several intermittent guide and positioning ribs arranged on the pallet body 1.

[0035] This invention allows users to easily print personalized fonts or patterns on the bottom of dumplings, increasing the fun and visual appeal of the food. No complicated equipment or skills are required; simply scrape different colored powders into the recessed mold cavity 2 using a scraper, then dip the dumpling in water, place it on the tray body 1, and press lightly. This greatly improves production efficiency. Optimized surface treatment and structural design effectively reduce adhesion between the dough and the tray, making demolding easier and faster. Suitable for various occasions such as home kitchens and restaurants, it meets the diverse needs of users for dumpling printing.

[0036] Example 2

[0037] like Figure 4-6As shown, this embodiment differs from Embodiment 1 in that, in this embodiment, the guide positioning component 9 on the pallet body 1 is a continuous rib ring arranged around its outer edge; and the side hole 3 is provided with reinforcing ribs 12. Figure 4 Taking the two reinforcing ribs 12 as an example, the side hole 3 is divided into three sections, which can improve the overall structural strength of the tray body 1.

[0038] In addition, a tray reinforcing rib 10 is provided on the back of the tray body 1, such as... Figure 5 As shown, the annular pallet reinforcing rib 10 can effectively improve the structural strength of the pallet body 1.

[0039] Example 3

[0040] The difference between this embodiment and Embodiment 1 is that in this embodiment, an annular recess 11 is provided on the top of the protective cover 8. Specifically, an inwardly recessed annular groove is provided on the top of the protective cover 8, and an annular recess 11 is formed on the inner side of the protective cover 8. The annular recess 11 can be fitted with the annular tray reinforcing rib 10 provided on the back of the tray body 1 in Embodiment 2. With this configuration, multiple trays filled with dumplings and covered can be stacked together. When stacking, the support component 6 is not required. The tray reinforcing rib 10 of the upper tray body 1 is inserted into the annular recess 11 of the lower protective cover 8 to form a positioning, which can effectively prevent the upper and lower trays from falling off due to misalignment. At the same time, the annular configuration allows the two layers of trays to rotate relative to each other, making it easy to adjust the direction and take them out layer by layer.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A tray for printing dumpling powder, characterized in that, include: The tray body (1) has a bearing surface for bearing dumplings after they have been dipped in water; Several recessed cavities (2) are evenly distributed on the bearing surface of the tray body (1) for holding the printing powder material. The depth of the recessed cavities (2) is between 0.3mm and 0.7mm. When the bottom of the dumpling is dipped in water and comes into contact with the recessed cavity (2) containing the powder, the powder material can be absorbed by the water on the surface of the dumpling and adhere to the bottom of the dumpling. After steaming, the powder material and the dumpling skin undergo a gelatinization reaction to form an integral printing that cannot be peeled off from the dumpling.

2. The tray for printing dumpling powder according to claim 1, characterized in that: The peripheral wall of the recessed mold cavity (2) is subjected to a drafting process with a drafting angle of 0.5° to 1° that is vertically upward and outward from the bottom of the recessed mold cavity (2).

3. The tray for printing dumpling powder according to claim 1, characterized in that: The tray body (1) is covered with a layer of anti-adhesion material, which is food-grade polytetrafluoroethylene or food-grade silicone.

4. The tray for printing dumpling powder according to claim 1, characterized in that: The bottom sides of the tray body (1) are respectively equipped with detachable support components (6).

5. A tray for printing dumpling powder according to claim 4, characterized in that: A magnet 1 (4) is installed on the back of the tray body (1), and a magnet 2 (5) is installed on the top of the support component (6). The magnet 1 (4) and the magnet 2 (5) are magnetically attracted to each other.

6. A tray for printing dumpling powder according to claim 4, characterized in that: The tray body (1) is provided with a side hole (3), and the support component (6) is provided with a storage groove (7). When the support component (6) is installed at the bottom of the tray body (1), the storage groove (7) is directly connected to the side hole (3).

7. A tray for printing dumpling powder according to claim 6, characterized in that: The shape of the side hole (3) is the same as that of the storage groove (7), and the size of the side hole (3) is not greater than that of the storage groove (7).

8. A tray for printing dumpling powder according to claim 6, characterized in that: The length of the side hole (3) is greater than the sum of the projected lengths of the plurality of recessed cavities (2) arranged on this side along the edge direction and the sum of the spacing between the plurality of adjacent recessed cavities (2), and is less than the side length of the tray body (1) on this side.

9. A tray for printing dumpling powder according to claim 8, characterized in that: Several reinforcing ribs (12) are provided inside the side hole (3).

10. A tray for printing dumpling powder according to claim 1, characterized in that: It also includes a protective cover (8), and a guide positioning component (9) is provided along the circumferential edge of the top surface of the pallet body (1). The protective cover (8) is fastened to the surface of the pallet body (1) by the guide positioning component (9) and forms a sealed space with the surface of the pallet body (1) after fastening.

11. A tray for printing dumpling powder according to claim 10, characterized in that: The guide positioning component (9) is an intermittent guide positioning rib or a continuous rib ring.

12. A tray for printing dumpling powder according to claim 10, characterized in that: The protective cover (8) is provided with an annular recess (11), and the back of the tray body (1) is provided with an annular tray reinforcing rib (10), and the tray reinforcing rib (10) and the annular recess (11) are fitted together with a clearance.

Images