Disposable molded pulp embedding box

Abstract

The disposable pulp molding embedding box comprises an integrated embedding box body formed by pulp molding, the embedding box body is composed of a bottom box body and a box cover, the box cover covers the bottom box body in an opening and closing mode through a rear end folding edge, a plurality of through holes are formed in the bottom face of an inner cavity of the bottom box body and the box cover, and the through holes are communicated with the box cover. The bottom box and the box cover are integrally provided with locking structures which can be buckled and positioned in a matched manner, and the surfaces of the bottom box and the box cover are subjected to surface treatment by using a curing agent. The embedding box disclosed by the invention can ensure stable structure and performance in the use period, can be degraded and recycled well after being discarded, and is wide in raw material source, simple to process and low in production cost.

Description

Technical Field

[0001] The invention relates to the technical field of embedding boxes, in particular to a disposable pulp molded embedding box. Background Art

[0002] Embedding is the process of using an embedding agent (which can be organic plastic, metal, etc.) to wrap the material powder or other bulk structure to be embedded to provide performance support or chemical protection. The embedding box is a material used to complete the material holding in the embedding experiment. However, the disposable embedding boxes currently on the market are made of plastic (such as PP, POM) or resin. For example, the embedding box disclosed in the Chinese patent with patent application number 200980134917.8, the box body and the film layer are made of polyester resin. The embedding box disclosed in the patent application number CN200810027542.2 includes a plastic box body and a plastic film thermally fused to the plastic box body. The biggest problem with these embedding boxes is that they cannot be quickly degraded and recycled. Although the patent number CN201720782803.6 discloses an embedding box, the box body is made of paper material, with a first side, a second side, a third side and a fourth side, the first side, the second side, the third side and the fourth side are connected end to end to form the box body of the quadrilateral structure, and the upper and lower sides of the box body are respectively an upper hollow side and a lower hollow side, the lower end of the lower hollow side is fixed to the embedding base by embedding glue, and the plant tissue sample is embedded in the embedding glue in the box body through the upper hollow bread. The embedding box of this structure has the following disadvantages: first, the shape is single and the processing cost is high; second, the protective performance is poor, because the embedding box is required to withstand formaldehyde for 24 hours, 70-100% ethanol for 10 hours, xylene for 2 hours, and 65°C paraffin for 2 hours during use. The paper box that has not been treated with surface protection has obviously insufficient protective performance. Long-term immersion in ethanol, formaldehyde, xylene and paraffin has a great impact on its structural stability and function, so it is difficult to meet the requirements of consumers. Summary of the invention

[0003] The purpose of the present invention is to provide a disposable pulp molded embedding box which can ensure the stability of structure and performance during the service life, can be better degraded and recycled after being discarded, and has a wide source of raw materials, simple processing and low production cost.

[0004] The technical solution of the present invention is achieved in this way:

[0005] The disposable pulp molded embedding box of the present invention is characterized in that it comprises an integrated embedding box formed by pulp molding, the embedding box consists of a base box and a box cover, the box cover can be opened and closed on the base box through a rear end fold, a plurality of through holes are opened on the inner cavity bottom surface of the base box and the box cover, and a locking structure that can be matched and buckled for positioning is integrally provided on the base box and the box cover, and the surfaces of the base box and the box cover are surface treated with a curing agent.

[0006] There are many ways to buckle the box cover and the bottom box, such as the front end of the box cover is provided with an insertion tongue, and the front end of the bottom box is correspondingly provided with an insertion hole for the insertion tongue. It is also possible that the bottom surface of the box cover is provided with a downward convex snap-fit ​​edge that can be buckled with the periphery of the inner cavity of the bottom box. It is further preferred that: the snap-fit ​​edge of the box cover is an increasing snap-fit ​​convex edge with a height gradually increasing from the back to the front, and the upper port of the inner cavity of the bottom box is integrally provided with a downward-inclined limiting shoulder that can be mounted on the top with the increasing snap-fit ​​convex edge. It is also possible that the snap-fit ​​edge of the box cover is an annular convex edge with the same height, and the two side edges and the front side edge of the annular convex edge form a tight fit with the inner cavity side wall of the bottom box. The three-side interference snap-fit ​​method can ensure that the box cover and the bottom box can still have a good snap-fit ​​within a certain deformation range of the embedding box, and there will be no looseness, and the snap-fit ​​structure is reliable. This design can ensure that the cover and the bottom box can still have a good snap fit within a certain deformation range of the embedding box, without loosening, and the snap fit structure is reliable. Furthermore, the bottom surface of the bottom box is set as a fancy upper arch structure, and support platforms are provided at the four corners. This fancy upper arch structure designed on the bottom surface has three functions: 1. It satisfies the organic solvent to enter and exit the embedding box during use; 2. The upper arch part can increase the friction force, which is convenient for fixing and arranging the embedding box; 3. The design of the fancy structure is also for aesthetic considerations.

[0007] Furthermore, the middle part of the box cover is arched upward to form an upper accommodating cavity.

[0008] Furthermore, the rear wall of the inner cavity of the bottom box is an inner bevel, which forms a marking area for labeling or coding. This inclined design can meet the need for writing and is convenient for marking and numbering the samples in the embedding box.

[0009] In order to improve the processing efficiency, the one-piece embedding box is formed into an one-piece pulp molded blank with multiple embedding boxes by compression molding, and then cut and punched to obtain multiple one-piece pulp molded embedding boxes in an open state. In this way, multiple pulp molded embedding boxes can be obtained by preparing one pulp molded blank.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] 1. The raw material pulp (including bamboo pulp, wood pulp, straw pulp, bagasse pulp, reed pulp and other biomass raw materials) used in the preparation of the embedding box is easy to obtain, can be well degraded and recycled after use and discarded, and is environmentally friendly.

[0012] 2. The embedding box is prepared by pulp molding, which is easy to process and can ensure stable structure and performance during use.

[0013] 3. The surface treatment of the embedding box can meet the requirements of the embedding box being resistant to organic solvents and has good protective performance.

[0014] 4. When the present invention is subjected to compression molding, a plurality of embedding box blanks can be molded at one time, so that a plurality of pulp molded embedding boxes can be obtained by preparing a pulp molded blank through cutting and punching, and the production efficiency is high.

[0015] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the main structure after the cover is closed;

[0018] Figure 3 for Figure 2 A schematic cross-sectional structure diagram of;

[0019] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0020] Figure 5 for Figure 4 Schematic diagram of the main structure after the cover is closed;

[0021] Figure 6 for Figure 5 A schematic cross-sectional structure diagram of;

[0022] Figure 7 for Figure 5 A rear view structural diagram of ;

[0023] Figure 8 It is a schematic diagram of the structure of an integrated pulp molded embedding box blank. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 8As shown, the disposable pulp molded embedding box of the present invention comprises an integrated embedding box formed by pulp molding, the embedding box consists of a bottom box 2 and a box cover 1, the box cover 1 can be opened and closed on the bottom box 2 through the rear end folding edge, a plurality of through holes are opened on the inner cavity bottom surface of the bottom box 2 and the box cover 1, and the bottom box 2 and the box cover 1 are integrally provided with a locking structure that can be buckled and positioned, and the surface of the integrated embedding box is surface treated with a curing agent. The above-mentioned curing agent includes one or more of acrylic acid, polyurethane, and vinyl resin curing agents, such as one or more combinations of acrylic acid, polycarbonate modified polyurethane and urethane, and modified epoxy vinyl resin. Since acrylic acid, polyurethane and vinyl resin are thermosetting materials, a protective layer can be formed on the surface of the product after the embedding box is treated to enhance the strength of the product.

[0025] In order to make the cover and bottom box close together reliably, the locking structure may be as follows: Figure 1 As shown, the front end of the box cover 1 is provided with an inserting tongue 3, and the front end of the bottom box 2 is correspondingly provided with an inserting hole 4 for inserting the inserting tongue 3. In order to further enhance the reliability of the cover structure, the bottom surface of the box cover 1 is provided with a downward convex snap-fit ​​edge that can be buckled with the periphery of the inner cavity of the bottom box 2. Figure 1-Figure 3 As shown, the snap-fitting edge of the box cover 1 is a raised snap-fitting convex edge 5 with a height increasing from the back to the front, and the upper end of the inner cavity of the bottom box 2 is integrally provided with a downward-inclined limiting shoulder 6 that can cooperate with the raised snap-fitting convex edge 5. The box cover has a raised snap-fitting convex edge structure on both sides that increases in height from the back to the front and is snap-fitted with the downward-inclined limiting shoulder 6 of the bottom box. This inclined snap-fitting structure can not only make the snap-fitting combination of the box cover and the bottom box more reliable, but also make it easier to insert the plug tongue into the insertion hole of the bottom box. The present invention can also be as follows Figures 2 to 6 As shown, the locking edge of the box cover 1 is an annular convex edge 8 of the same height, and the two side edges and the front side edge of the annular convex edge 8 form a tight fit (slightly interference fit) with the inner cavity side wall of the bottom box. The bottom surface of the bottom box 2 is slightly arched, and support platforms 9 are provided at the four corners. This three-side interference locking method can ensure that the box cover and the bottom box can still have a good locking within a certain deformation range of the embedding box, and there will be no looseness, and the locking structure is reliable.

[0026] Furthermore, the middle part of the box cover 1 is arched upward to form an upper accommodating cavity.

[0027] In order to facilitate labeling or coding on the embedding box, the rear wall of the inner cavity of the bottom box 2 is an inner bevel, and the inner bevel forms a marking area 7 for labeling or coding.

[0028] The one-piece embedding cassette of the present invention can be molded one by one, that is, one at a time. Preferably, after the one-piece pulp molded blank with multiple small-sized embedding cassettes is molded by molding, it is cut and punched to obtain multiple one-piece pulp molded embedding cassettes in an open state. This embedding cassette can be widely used in the fields of biology and medicine.

[0029] The method for preparing the disposable pulp molded embedding cassette of the present invention comprises the following steps:

[0030] (1) The raw pulp board is crushed and decomposed and then pulped; the pulp board includes but is not limited to one or a combination of bamboo pulp, wood pulp, straw pulp, bagasse pulp, and reed pulp, and the pulping process is performed until the freeness is 450-550mL.

[0031] (2) After the wet molding process is used for molding, the mold is dried and shaped, and the moisture content is processed to 8-14%, and an integrated pulp molding blank having at least one small-sized embedding box is obtained, such as Figure 8 As shown, there are 12 small-sized embedding boxes on it; the drying and shaping methods include but are not limited to one or more of hot air drying, far-infrared drying, and microwave drying for drying. The maximum size of the small-sized embedding box is less than or equal to 90mm. The specific embedding box size is determined according to the shape, generally divided into square, round and rectangular. Among them, the common internal dimensions of the square are 25×25×5mm, 30×30×5mm, 45×45×5mm, 60×60×5mm, etc.; the common dimensions of the circle are inner diameters of 25mm, 30mm, 50mm, etc.; the common internal dimensions of the rectangle are 30×20×5mm, 60×40×5mm, 90×50×5mm, etc. The disposable pulp molding embedding box provided in this embodiment has an external dimension of 43x28x7mm and an internal dimension of 30×20×5mm.

[0032] (3) Using a cutting and punching die to cut and punch the pulp molded body to obtain a plurality of small-sized pulp molded embedding boxes with through holes;

[0033] (5) The pulp molded embedding cassette after cutting and punching is surface treated with a curing agent and then thermally cured to obtain the disposable pulp molded embedding cassette of the present invention.

[0034] The protective performance test of the disposable pulp molded embedding cassette of the present invention is carried out:

[0035] A sample without surface pretreatment (blank sample) and three samples with acrylic surface pretreatment, polyurethane surface pretreatment, and vinyl resin surface pretreatment were immersed in formaldehyde for 24 hours, anhydrous ethanol for 10 hours, xylene for 2 hours, and 65℃ paraffin for 2 hours. After immersion, it was found that the three disposable pulp molded embedding boxes with surface treatment were able to maintain integrity after immersion in organic solvents and did not degrade under the action of organic solvents. However, the samples without surface pretreatment showed deformation and degradation.

[0036] Tables 1 and 2 below show the performance test data of tensile strength and anti-tensile strength of four disposable pulp molded embedding cassette samples.

[0037] Table 1 Sample tensile strength

[0038]

[0039] Table 2 Sample tensile strength

[0040]

[0041] From the performance test data in the above two tables, it can be seen that the tensile strength and anti-tensile strength of the blank sample without curing agent surface pretreatment before soaking in organic solvents are significantly lower than those of the other three samples with surface pretreatment. And the three samples with surface pretreatment still have strong tensile strength and anti-tensile strength after long-term soaking in organic solvents. Their tensile strength and anti-tensile strength can basically reach the strength of the blank sample, or even far exceed the performance strength of the blank sample, which can meet the use requirements of organic solvent resistance, so the protective performance is good. This is because acrylic, polyurethane and vinyl resins are thermosetting materials, which can form a protective layer on the surface of the sample after the sample is treated to enhance the strength of the sample.

[0042] Although the present invention is described with reference to specific embodiments, such description is not intended to limit the present invention. With reference to the description of the present invention, other changes of the disclosed embodiments are predictable to those skilled in the art, and such changes should fall within the scope defined by the claims.

Claims

1. A disposable pulp molding embedding cassette, characterized in that: The invention comprises an integrated embedding box formed by pulp molding, the embedding box comprising a base box (2) and a box cover (1), the box cover (1) being placed on the base box (2) in an openable and closable manner through a rear end fold, a plurality of through holes being provided on the inner cavity bottom surface of the base box (2) and the box cover (1), and a locking structure being capable of being matched and buckled for positioning is integrally provided on the base box (2) and the box cover (1), and the surface of the integrated embedding box is treated with a curing agent.

2. The disposable pulp molding embedding cassette according to claim 1, characterized in that: The front end of the box cover (1) is provided with an insertion tongue (3), and the front end of the base box (2) is correspondingly provided with an insertion hole (4) for the insertion tongue (3) to be inserted.

3. The disposable pulp molding embedding cassette according to claim 1 or 2, characterized in that: The bottom surface of the box cover (1) is provided with a downward convex snap-fitting edge that can be buckled with the periphery of the inner cavity of the bottom box (2).

4. The disposable pulp molding embedding cassette according to claim 3, characterized in that: The locking edge of the box cover (1) is a heightened locking convex edge (5) whose height increases from the back to the front, and a downwardly inclined limiting shoulder (6) capable of being mounted in cooperation with the heightened locking convex edge (5) is integrally provided at the upper end of the inner cavity of the bottom box (2).

5. The disposable pulp molding embedding cassette according to claim 3, characterized in that: The engaging edge of the box cover (1) is an annular convex edge (8) of the same height, and the two side edges and the front side edge of the annular convex edge (8) form a tight fit with the inner cavity side wall of the bottom box.

6. The disposable pulp molding embedding cassette according to claim 1, characterized in that: The bottom surface of the bottom box (2) is designed as a fancy arched structure, and support platforms (9) are provided at the four corners.

7. The disposable pulp molding embedding cassette according to claim 1, characterized in that: The rear wall of the inner cavity of the bottom box (2) is an inner bevel, and the inner bevel forms a marking area (7) for labeling or coding.

8. The disposable pulp molding embedding cassette according to claim 1, characterized in that: The middle part of the box cover (1) is arched upward to form an upper accommodating cavity.

9. The disposable pulp molding embedding cassette according to claim 1, characterized in that: The integrated embedding box is formed by compression molding into an integrated pulp molded blank having a plurality of small-sized embedding boxes, and then cut and punched to obtain a plurality of integrated pulp molded embedding boxes in an open state.

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