Paper cup holder with seeds and preparation method thereof

Abstract

The invention provides a paper cup holder with seeds and a preparation method of the paper cup holder, and relates to the technical field of environment-friendly packaging materials. The paper cup stand comprises a paper cup stand body made of waste paper pulp and seeds embedded in the paper cup stand body, the seeds are provided with coating layers, one or more grooves used for embedding the seeds are formed in the bottom and / or a middle framework of the paper cup stand body, and paper pulp fibers on the peripheries of the grooves at least partially wrap and cover the seeds. The preparation method comprises the following steps: performing multi-layer coating treatment on seeds; pulping the waste paper pulp, injecting into a forming mold, and forming to obtain a wet blank; performing high-temperature drying on the wet blank to obtain a cup stand base body; spraying water to the surface of the cup holder base body to soften the surface; the seeds are placed in the groove of the cup stand base body; and placing the cup stand base body with the seeds in a shaping mold for hot-pressing shaping, so as to obtain the cup stand. After being used, the paper cup stand can be used as a seed carrier for planting, so that the cyclic utilization of packaging materials is realized.

Description

Technical Field

[0001] This invention relates to the field of environmentally friendly packaging materials technology, and in particular to a paper cup holder with seeds and its preparation method. Background Technology

[0002] With the increasing popularity of freshly made beverages such as coffee and tea, the demand for takeout is huge. Cup holders are usually placed inside the packaging to secure the cups and prevent spills. Currently, most cup holders are made of plastic or ordinary paper pulp and are discarded after use, consuming resources and increasing the environmental burden.

[0003] To improve environmental friendliness, existing technologies have introduced the concept of combining plant seeds with pulp to create biodegradable, plant-grown paper products. For example, seeds are directly mixed into the pulp and then molded. However, standard manufacturing processes for molded pulp products typically include steps such as pulping, molding, high-temperature drying, and hot-pressing. The high temperatures and mechanical agitation processes can easily damage the biological activity of the seeds, preventing them from germinating.

[0004] Therefore, how to stably and aesthetically integrate seeds into paper cup holders while preserving their viability has become an urgent problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a paper cup holder with seeds and its preparation method. This paper cup holder can be used as a seed carrier for planting after use, realizing the recycling of packaging materials. Its preparation method, through seed pretreatment and optimization of the production process, effectively avoids damage to seed viability caused by high temperatures and mechanical forces during production.

[0006] In a first aspect, the present invention provides a paper cup holder with seeds, employing the following technical solution: A paper cup holder with seeds includes a paper cup holder body made of waste paper pulp, bagasse or straw residue and seeds embedded in the paper cup holder body. The seeds have a coating layer. The bottom and / or middle skeleton of the paper cup holder body are provided with one or more grooves for embedding the seeds. The pulp fibers around the grooves at least partially wrap and cover the seeds.

[0007] Optionally, the area surrounding the groove on the paper cup holder body is provided with a tear line for tearing it off.

[0008] With the above setup, users can tear off the area along the tear line and choose an additional container or use the paper cup holder itself as a container to add soil for planting.

[0009] The paper cup holder body is a flowerpot structure that can be used to hold seeds for germination.

[0010] With the above setup, users can directly add soil into the paper cup holder for planting.

[0011] Optionally, the seed coating layer includes a buffer layer, a heat insulation layer, and a protective layer, which are sequentially covered from the inside out.

[0012] Optionally, the buffer layer comprises, by mass percentage: 20%~30% kaolin, 20%~30% starch, and the remainder is water.

[0013] Optionally, the buffer layer comprises, by mass percentage, 25% kaolin, 25% starch, and the remainder water.

[0014] This invention uses kaolin and starch as raw materials for the buffer layer, creating a mild initial microenvironment for the seeds and providing a basic physical barrier and moisture buffer. Kaolin forms a uniform, dense base coating on the seed surface, effectively isolating the seeds from potential external chemicals. Its good plasticity and viscosity provide a solid foundation for the adhesion of subsequent coatings and give the buffer layer a certain structural strength. Starch has excellent hydrophilicity and swelling properties. In a dry state, it helps kaolin set and increases the coating's toughness. When exposed to water, it rapidly absorbs moisture and slowly releases it, providing an initial, stable moisture supply for seed germination and buffering the impact of drastic changes in external moisture.

[0015] Optionally, the insulation layer comprises, by mass percentage: 15%~25% bentonite, 15%~25% expanded perlite, 15%~25% diatomaceous earth, with the balance being water.

[0016] Optionally, the insulation layer comprises, by mass percentage: 20% bentonite, 20% expanded perlite, 20% diatomaceous earth, and the remainder being water.

[0017] This invention employs bentonite, expanded perlite, and diatomaceous earth to form a thermal insulation layer. Expanded perlite is a porous material formed by the high-temperature expansion of perlite ore. Its interior is filled with closed micropores of air. Air is an excellent poor conductor of heat, which is equivalent to wrapping a seed with a very fine layer of air bubbles, significantly hindering heat conduction through physical means. It is the core thermal insulation medium of the layer. Diatomaceous earth is a natural biogenic siliceous sedimentary rock with high porosity. It further increases the porosity of the coating, adsorbing more air and improving the overall thermal resistance. Simultaneously, the fine structure of diatomaceous earth fills some of the voids between expanded perlite particles, making the coating structure more stable and uniform, preventing any single material from shrinking or cracking when heated. Bentonite has extremely strong water absorption, swelling and binding properties. During coating preparation, bentonite can bind loose perlite and diatomite particles together to form a film. When heated during the hot pressing and shaping stage, bentonite will further lose water and harden, ensuring that this porous and loose thermal insulation structure will not fall apart or collapse under thermal shock, thus maintaining its thermal insulation integrity.

[0018] Optionally, the protective layer comprises, by mass percentage: 40%~50% talc, 5%~10% sodium silicate, 5%~10% titanium dioxide, with the balance being water.

[0019] Optionally, the protective layer comprises, by mass percentage: 40% talc, 10% sodium silicate, 5% titanium dioxide, with the balance being water.

[0020] This invention employs talc, sodium silicate, and titanium dioxide to form a protective layer. Titanium dioxide has extremely high reflectivity to infrared radiation; under the high-temperature environment of the forming mold, it can directly reflect most of the heat transferred in the form of radiation back, fundamentally reducing the radiative heat energy absorbed by the seeds. Sodium silicate undergoes a complex silicate curing reaction when heated, losing moisture and forming a hard, ceramic-like inorganic network structure. This provides the seeds with excellent mechanical strength, resisting mold pressure and physical impacts during subsequent transportation. It also effectively locks in moisture from the seeds and the internal coating, preventing excessive loss during drying and hot pressing. Talc fills the framework formed by titanium dioxide and sodium silicate, making the outer coating denser, smoother, and flatter, reducing surface defects, further enhancing its ability to block the convection of moisture and hot air, and improving the coating's processing performance.

[0021] Secondly, the present invention provides a method for preparing the seed-bearing paper cup holder, which adopts the following technical solution: A method for preparing a paper cup holder with seeds includes the following steps: Step S1: Perform multi-layer coating treatment on the seeds to form seeds with a coating layer; Step S2: The waste paper pulp is beaten and injected into a molding die to form a wet blank. The molding die has protrusions that form the grooves on the wet blank. Step S3: Dry the wet blank at high temperature to obtain the cup holder substrate; Step S4: Spray water on the surface of the cup holder substrate to soften its surface; Step S5: Place the seed in the groove of the cup holder base; Step S6: Place the cup holder base containing the seeds into a shaping mold for hot pressing and shaping to finally obtain the paper cup holder with seeds. The shaping mold has protrusions on the cavity corresponding to the groove to deform the pulp fibers around the groove under pressure, so as to at least partially cover the seeds.

[0022] This invention utilizes a molding die to form a groove for placing seeds on a wet blank during the molding stage. Since the pulp has been softened by spraying water, the pulp fibers around the groove will deform under pressure and gradually cover the groove when the cup holder base is pressed down during the hot pressing and shaping stage. This can partially cover the seeds in the groove, allowing the seeds to be pre-embedded in the paper cup holder without being completely sealed.

[0023] Optionally, the specific steps of step S1 are as follows: Step S11: Prepare the buffer layer slurry, the heat insulation layer slurry, and the protective layer slurry respectively; Step S12: After soaking the seeds in the buffer layer slurry, remove them and let them air dry; Step S13: After soaking in the insulation layer slurry again, remove and air dry; Step S14: Finally, after soaking in the protective layer slurry, remove and air dry.

[0024] Optionally, in step S6, the temperature of the hot pressing is 80-100℃, the pressure is 5-10MPa, and the time is 5-10 seconds.

[0025] In summary, the present invention has at least one of the following beneficial effects: 1. This invention transforms disposable cup holders into plantable ecological products, giving them a second life, greatly enhancing environmental value and user experience, and conforming to the concept of circular economy.

[0026] 2. This invention uses a three-layer coating structure to pre-treat the seeds, creating a solid protective shield for the seeds from multiple dimensions such as heat insulation, heat reflection, buffer protection, water locking and shaping, ensuring that the seeds can withstand the necessary production and processing conditions.

[0027] 3. Through the special design of the shaping mold, the seeds are naturally embedded in the pulp fibers, resulting in a strong and aesthetically pleasing bond. The addition of tear lines further enhances the product's usability and ease of functional separation.

[0028] 4. The main raw materials of this invention are waste paper pulp, natural minerals, and plant seeds. The entire product is completely biodegradable and causes no environmental pollution.

[0029] 5. The present invention cleverly avoids the pulping and stirring and long-term high-temperature drying steps that are most damaging to seeds in traditional processes by first forming the matrix, then embedding protective seeds, and then fixing them by short-term low-temperature hot pressing. Therefore, it can ensure that the activity of the seeds is not damaged. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a paper cup holder with seeds provided in one embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the process flow for a seed-bearing paper cup holder provided in one embodiment of the present invention; Figure 3 This is a schematic diagram of the cup holder base and the shaping mold shaping structure in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the cup holder base and the shaping mold in another embodiment of the present invention.

[0032] Reference numerals: 1. Paper cup holder body; 2. Groove; 3. Seed; 4. Tear line; 5. Female mold; 6. Male mold; 7. Boss; 8. Cup holder base. Detailed Implementation

[0033] To more clearly illustrate the present invention, the following description, in conjunction with preferred embodiments, further clarifies the invention. Those skilled in the art should understand that the specific descriptions below are illustrative rather than restrictive, and should not be construed as limiting the scope of protection of the present invention.

[0034] Figure 1 This is a schematic diagram of a paper cup holder with seeds 3 provided in one embodiment of the present invention. See also... Figure 1 One embodiment of the present invention provides a paper cup holder with seeds 3, comprising a paper cup holder body 1 made of waste paper pulp, wherein one or more grooves 2 for embedding seeds 3 are provided at the bottom and / or the connection of the middle skeleton of the paper cup holder body 1, and the pulp fibers around the grooves 2 at least partially wrap and cover the seeds 3. Figure 1 As shown, a tear line 4 that is easy to tear is molded around the groove 2.

[0035] In another embodiment, the paper cup holder body 1 is a flower pot structure that can be used to hold the seeds 3 for germination. The user can directly add an appropriate amount of soil to the paper cup holder to directly germinate the seeds 3.

[0036] Seed 3 has a coating layer due to the coating treatment. The coating layer includes a buffer layer, a heat insulation layer and a protective layer, which are wrapped from the inside to the outside.

[0037] Figure 2 This is a schematic diagram of the process flow for a paper cup holder with seeds 3 provided in one embodiment of the present invention. See also... Figure 2 The preparation method of this paper cup holder specifically includes the following steps: Step S1: Perform a three-layer coating treatment on seed 3 to form seed 3 with a three-layer coating structure.

[0038] First, prepare the slurry for seed 3 pretreatment, specifically including buffer layer slurry, heat insulation layer slurry and protective layer slurry.

[0039] The buffer layer slurry is obtained by uniformly mixing the following components by mass percentage: 20%~30% kaolin, 20%~30% starch, and the remainder is water.

[0040] The insulation slurry is obtained by uniformly mixing the following components by mass percentage: 15%~25% bentonite, 15%~25% expanded perlite, 15%~25% diatomaceous earth, and the balance being water.

[0041] The protective layer slurry is obtained by uniformly mixing the following components in the indicated mass percentages: 40%~50% talc, 5%~10% sodium silicate, 5%~10% titanium dioxide, and the balance being water.

[0042] Then, the three-layer coating process is carried out in sequence: the plant seed 3 is immersed in the buffer layer slurry, fully moistened, and then taken out and air-dried at room temperature or low temperature to form the inner coating; the seed 3 with the inner coating is immersed in the heat insulation layer slurry, moistened, and then taken out and dried to form the middle coating; the seed 3 with the middle coating is immersed in the protective layer slurry, moistened, and then taken out and dried, thus obtaining the seed 3 with a three-layer coating structure.

[0043] Step S2: Shred and pulp the waste paper to a certain concentration, inject the pulp into the forming mold of the paper cup holder, and use vacuum or pressure to make the fibers adhere to the mold mesh to form a wet blank.

[0044] The forming mold has a protrusion that forms a groove 2 on the wet blank. The groove 2 can be located at the bottom of the wet blank, or at the middle skeleton of the wet blank, or at both the bottom and the middle skeleton of the wet blank.

[0045] Step S3: Transfer the wet blank to a drying device and dry it at a temperature of 100-230℃ for 30-40 minutes to obtain a cup holder substrate 8 that is initially shaped but has a wrinkled surface.

[0046] Step S4: Apply uniform atomized water spray to the surface of the cup holder substrate 8 to soften the surface fibers and restore some plasticity.

[0047] Step S5: Place the seeds 3 with the three-layer coating structure obtained in step S1 into the groove 2 of the cup holder base 8 by means of a robotic arm or manually.

[0048] Step S6: Place the cup holder base 8 with the seeds 3 inside into a special shaping mold, close the mold and perform hot pressing. The hot pressing temperature is 80-100℃, the pressure is 0.5-3MPa, and the time is 15-30 seconds. During hot pressing, the softened pulp fibers on the inner wall of the groove 2 are deformed under the action of the shaping mold, at least partially covering the seeds 3. After hot pressing, open the mold and take out the finished paper cup holder.

[0049] Figure 3 This is a schematic diagram of the cup holder base 8 and the shaping mold shaping structure in one embodiment of the present invention. See also Figure 3 The forming mold includes a male mold 6 and a female mold 5. The female mold 5 has a cavity that matches the shape of the cup holder. The male mold 6 has a boss 7 at the position corresponding to the groove 2. The outer diameter of the end of the boss 7 is slightly larger than the inner diameter of the groove 2. Therefore, when the male mold 6 and the female mold 5 are closed, the outer end of the boss 7 of the male mold 6 will squeeze the pulp fibers around the inner wall of the groove 2. These pulp fibers, softened by water spraying, will deform and move towards the center of the groove 2 under the pressure of the male mold 6, thus forming a "lid" covering the seeds 3 in the groove 2. This allows the seeds 3 to remain fixed in the groove 2 and not fall out. Moreover, this "lid" covering the seeds 3 is not completely sealed, so the seeds 3 can germinate and emerge from the groove 2 after being soaked in water.

[0050] During this process, the boss 7 of the upper mold piles the pulp fibers around the inner wall of the groove 2 towards the center of the groove 2, thus providing the seed 3 with a "lid" that can completely cover the seed 3 but is not completely sealed. At the same time, the high temperature causes the fibers on the surface of the cup holder substrate 8 to dry and set rapidly, becoming flat and smooth, and the fibers at the pressing point tightly wrap around the seed 3, firmly fixing it in the formed groove 2. Due to the short hot pressing time and the efficient multi-layer coating protection of the seed 3, the core temperature of the seed 3 will not reach a level that would deactivate it.

[0051] Figure 4 This is a schematic diagram of the cup holder base 8 and the shaping mold shaping structure in another embodiment of the present invention. See also Figure 4The shaping mold includes a male mold 6 and a female mold 5. The female mold 5 has a cavity that matches the shape of the cup holder. The male mold 6 has protrusions 7 around the groove 2. When the male mold 6 and the female mold 5 are closed, the outer end of the protrusions 7 of the male mold 6 will squeeze the pulp fibers around the inner wall of the groove 2. These pulp fibers, softened by water spraying, will deform and move towards the center of the groove 2 under the pressure of the male mold 6, thus forming a "lid" covering the seeds 3 in the groove 2. This allows the seeds 3 to remain fixed in the groove 2 and not fall out. Moreover, this "lid" covering the seeds 3 is not completely sealed, so the seeds 3 can germinate and emerge from the groove 2 after being soaked in water.

[0052] The method of using the paper cup holder with seed 3 according to an embodiment of the present invention is as follows.

[0053] Consumers can keep the paper cup holders after using the beverage. When planting, first thoroughly moisten the cup holder with water, then tear off the part containing the seed 3 along the tear line 4, place it in a container or bury it directly in the soil of a flowerpot, water it appropriately, and the pulp and coating layer outside the seed 3 will degrade naturally, and the seed 3 will germinate and grow.

[0054] The present invention will be further illustrated below through specific embodiments and comparative seed germination experiments.

[0055] Examples 1-3: In Examples 1-3, lettuce seeds (Lactuca sativa) were used as experimental seeds 3. Seeds 3 were coated with different methods, as detailed in Table 1. The coated seeds 3 were placed into the groove 2 of the cup holder base 8 prepared according to steps S2-S4. Then, the cup holder base 8 was placed into a shaping mold, the mold was closed, and hot-pressed at a temperature of 100°C, a pressure of 1.0 MPa, and a time of 30 seconds. After hot-pressing, the mold was opened and the hot-pressed and shaped paper cup holder was removed.

[0056] It should be noted that the coating treatment schemes described in Table 1 all follow the order of first coating the buffer layer, then the insulation layer, and finally the protective layer. All proportions of the components listed in Table 1 are by mass percentage.

[0057] Table 1. Coating treatment schemes for each embodiment and comparative example.

[0058] Comparative Example 1: Comparative Example 1 is basically the same as Example 1, except that Comparative Example 1 lacks a buffer layer.

[0059] Comparative Example 2: Comparative Example 2 is basically the same as Example 1, except that Comparative Example 2 lacks a heat insulation layer.

[0060] Comparative Example 3: Comparative Example 3 is basically the same as Example 1, except that Comparative Example 3 lacks a protective layer.

[0061] Comparative Example 4: Comparative Example 4 is basically the same as Example 1, except that the proportions of each component in the buffer layer of Comparative Example 4 are: 15% kaolin, 35% starch, and 50% water.

[0062] Comparative Example 5: Comparative Example 5 is basically the same as Example 1, except that the composition ratio of each component of the buffer layer in Comparative Example 5 is: 35% kaolin, 15% starch, and 50% water.

[0063] Comparative Example 6: Comparative Example 6 is basically the same as Example 1, except that the composition ratio of each component of the insulation layer in Comparative Example 6 is: bentonite 30%, perlite 10%, diatomaceous earth 20%, and water 40%.

[0064] Comparative Example 7: Comparative Example 7 is basically the same as Example 1, except that the composition ratio of each component of the protective layer in Comparative Example 6 is: talc 20%, sodium silicate 15%, titanium dioxide 10%, and water 55%.

[0065] Comparative Example 8: Comparative Example 8 is basically the same as Example 1, except that the composition ratio of each component of the protective layer in Comparative Example 8 is: talc 48%, sodium silicate 10%, titanium dioxide 2%, and water 40%.

[0066] Seeds 3 were taken from the paper cup holders of Examples 1-3 and Comparative Examples 1-8 and planted to evaluate their germination rate, germination time, and growth vigor. The planting environment was as follows: temperature 22±2℃, humidity 70%, and light 12 hours / day. Germination was defined as the radicle breaking through the seed coat by ≥2mm. Growth vigor was evaluated according to Table 2. The germination status and growth vigor scores of each example and comparative example are shown in Table 3.

[0067] Table 2 Evaluation Criteria for Growth Vigor

[0068] Table 3 Germination status and growth vigor scores for each embodiment and comparative example.

[0069] As can be seen from the results in Table 3, Examples 1-3 and Comparative Examples 4-8 all contain three coating layers. Since the seeds 3 need to break through the layers to germinate, the germination time is longer compared to Comparative Examples 1-3, which only have two coating layers. Furthermore, Examples 1-3 use a buffer layer, a heat insulation layer, and a protective layer to coat the seeds 3 sequentially, and the formula for each layer is reasonably designed. Even after hot pressing and shaping by the cup-shaped substrate 8, the germination effect of the seeds 3 is not affected.

[0070] Compared with Example 1, Comparative Example 1 lacks a buffer layer, so the seeds 3 are in direct contact with the pulp and the external environment, making them susceptible to mechanical damage and moisture fluctuations, which seriously affects the germination rate and seedling quality. Comparative Example 2 lacks a heat insulation layer, so the seeds 3 are easily damaged by heat during the hot pressing and shaping process, which ultimately leads to a significant decrease in germination rate and poor growth. Comparative Example 3 lacks a protective layer, so the coating layer is easy to fall off, and therefore it is also affected by temperature and the external environment, resulting in a low germination rate.

[0071] Compared with Example 1, the proportion of kaolin in the buffer layer of Comparative Example 4 was too low, resulting in insufficient physical barrier of the buffer layer and reduced water regulation capacity; the proportion of starch in the buffer layer of Comparative Example 5 was too low, resulting in weak water buffering capacity of the buffer layer and insufficient water supply in the early stage. As a result, although the germination rate of seed 3 could be maintained above 80%, its growth potential was insufficient in the later stage.

[0072] Compared with Example 1, the bentonite content in the insulation layer of Comparative Example 6 was too high, which resulted in an overly dense structure of the insulation layer, poor air permeability of the seed 3, long germination time, low germination rate, and insufficient growth potential in the later stage.

[0073] Compared with Example 1, the talc content of the protective layer in Comparative Example 7 is too low, which easily leads to cracking of the coating layer and a decrease in the protective effect on the internal seed 3; the titanium dioxide content of the protective layer in Comparative Example 8 is too low, which leads to a decrease in its heat reflectivity, and the seed 3 is easily damaged by the influence of temperature and external environment.

[0074] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A paper cup holder with seeds, characterized in that, The invention includes a paper cup holder body (1) made of waste paper pulp, bagasse or straw residue and seeds (3) embedded in the paper cup holder body (1), the seeds (3) having a coating layer, and the bottom and / or middle skeleton of the paper cup holder body (1) having one or more grooves (2) for embedding the seeds (3), the pulp fibers around the grooves (2) at least partially covering the seeds (3).

2. The paper cup holder with seeds according to claim 1, characterized in that, The area surrounding the groove (2) on the paper cup holder body (1) is provided with a tear line (4) for tearing it off.

3. The paper cup holder with seeds according to claim 1, characterized in that, The paper cup holder body (1) is a flowerpot structure that can be used to hold seeds (3) for germination.

4. The paper cup holder with seeds according to claim 1, characterized in that, The coating layer of the seed (3) includes a buffer layer, a heat insulation layer and a protective layer, which are wrapped from the inside out.

5. The paper cup holder with seeds according to claim 4, characterized in that, The buffer layer comprises, by mass percentage: 20% to 30% kaolin, 20% to 30% starch, and the remainder is water.

6. The paper cup holder with seeds according to claim 4, characterized in that, The insulation layer comprises, by mass percentage: 15%~25% bentonite, 15%~25% expanded perlite, 15%~25% diatomaceous earth, with the remainder being water.

7. The paper cup holder with seeds according to claim 4, characterized in that, The protective layer comprises, by mass percentage: 40%~50% talc, 5%~10% sodium silicate, 5%~10% titanium dioxide, with the balance being water.

8. A method for preparing a seeded paper cup holder according to any one of claims 1-7, characterized in that, Includes the following steps: Step S1: Perform multi-layer coating treatment on the seeds (3) to form seeds (3) with a coating layer; Step S2: The waste paper pulp is pulped and injected into a molding mold to form a wet blank. The molding mold has a protrusion that forms the groove (2) on the wet blank. Step S3: Dry the wet blank at high temperature to obtain the cup holder substrate; Step S4: Spray water on the surface of the cup holder substrate to soften its surface; Step S5: Place the seed (3) in the groove (2) of the cup holder base; Step S6: Place the cup holder base containing the seeds (3) into the shaping mold for hot pressing and shaping, and finally obtain the paper cup holder with the seeds (3). The shaping mold has protrusions on the cavity corresponding to the groove (2) to deform the pulp fibers around the groove (2) under pressure, so as to at least partially cover the seeds (3).

9. The method for preparing the seeded paper cup holder according to claim 8, characterized in that, The specific steps of step S1 are as follows: Step S11: Prepare the buffer layer slurry, the heat insulation layer slurry, and the protective layer slurry respectively; Step S12: After soaking the seeds (3) in the buffer layer slurry, remove them and let them air dry; Step S13: After soaking in the insulation layer slurry again, remove and air dry; Step S14: Finally, after soaking in the protective layer slurry, remove and air dry.

10. The method for preparing the seeded paper cup holder according to claim 8, characterized in that, In step S6, the hot pressing temperature is 80-100℃, the pressure is 5-10MPa, and the time is 5-10 seconds.

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