Method for preparing mould pressing tool by recycling bamboo and wood fibers

Abstract

The invention discloses a method for preparing a mould pressing tool by reutilizing bamboo and wood fibers, belongs to the field of fiber products, and particularly relates to a method for preparing a mould pressing tool by utilizing waste bamboo and wood as raw materials, crushing the waste bamboo and wood into plant fibers, granulating the plant fibers, screening out fiber particles with consistent particle sizes, adding a natural adhesive, uniformly mixing and stirring, and finally carrying out hot press molding. According to the invention, the waste bamboo is used as the raw material, and the natural antibacterial substance (bamboo quinone) contained in the bamboo has strong antibacterial ability, so that the breeding of bacteria can be effectively resisted. No chemical agent or pigment component is added in the whole production process, the used adhesive is also directly taken from the nature, and the finished product is non-toxic and odorless, can be naturally degraded and does not generate public nuisance; the prepared utensil is heat-resistant, oil-resistant, durable, easy to clean, firm, fine, resistant to falling and high temperature, free of toxic and harmful substances and safe to use.

Description

Technical Field

[0001] The invention belongs to the field of fiber products, and in particular relates to a method for preparing a molded appliance by recycling bamboo and wood fibers. Background Art

[0002] Many dry bamboo branches in the forests and waste scraps from bamboo and wood processing plants are not reused, but are abandoned and left to rot. As renewable resources, the waste of bamboo and wood will also lead to the reduction of biological resources, thus causing over-exploitation of wood resources, resulting in the reduction of forest area and the destruction of the ecological balance of the natural environment.

[0003] Most of the existing methods for recycling bamboo and wood are to make disposable utensils, such as disposable bamboo and wooden chopsticks. During the production process, a variety of chemicals are added, such as chemical adhesives, decolorizers, etc., which will release harmful substances during use and cause harm to the human body. The added chemicals are not easy to degrade, thus causing secondary pollution to the environment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a method for preparing molded utensils by recycling bamboo and wood fibers, which utilizes the natural antibacterial substances (bambooquinone) contained in bamboo fibers to effectively resist bacterial growth and achieve antibacterial effects. No chemical agents are added during the production process, which is safe and environmentally friendly.

[0005] In order to solve the above technical problems, the present invention provides a method for preparing molded appliances by recycling bamboo and wood fibers, comprising the following steps:

[0006] (1) crushing bamboo and wood raw materials into plant fibers;

[0007] (2) granulating and sieving the plant fibers to obtain uniform fiber particles;

[0008] (3) Adding natural adhesive into the fiber particles and mixing them evenly;

[0009] (4) Hot pressing.

[0010] Bamboo has a short growth cycle and strong regeneration ability, and is a renewable resource. The present invention uses waste bamboo as raw materials, and uses the natural antibacterial substances (bambooquinone) contained in bamboo to have strong antibacterial ability, which can effectively resist bacterial growth. The entire production process does not add any chemical agents and pigment components, and the adhesives used are also directly taken from nature. The finished product is non-toxic and odorless, and can be naturally degraded and does not produce pollution; the prepared utensils are heat-resistant, oil-resistant, durable, easy to clean, solid and dense, anti-fall and high temperature, do not contain toxic and harmful substances, and are safe to use.

[0011] As a further description of the above technical solution:

[0012] The fiber particles in step (2) have a particle size of 60 to 100 meshes. The fiber particles are sieved to select particles with a consistent particle size for use in the production of the same batch of utensils, so that the fineness of the same batch of products is consistent, thereby improving product reproducibility and durability of the utensils.

[0013] As a further description of the above technical solution:

[0014] The natural adhesive in step (3) is a plant adhesive, and the added amount of the natural adhesive is 5-8wt% of the fiber particles; the plant adhesive is an adhesive made of natural resin, starch, soy protein, tannin, lignin or other carbohydrates.

[0015] As a further description of the above technical solution:

[0016] In step (4), the pressure of hot pressing is 300-500t, the temperature is 150-200°C, and the time is 30-60s. The product is sterilized at high temperature during the hot pressing process, and no additional sterilization step is required. The high pressure makes the internal structure of the device dense and compact, thereby improving the hardness and durability of the product.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. The present invention uses waste bamboo as raw materials, and uses the natural antibacterial substances (bambooquinone) contained in bamboo, which have strong antibacterial ability and can effectively resist bacterial growth;

[0019] 2. No chemical agents or pigments are added during the production process, and the adhesives used are directly taken from nature. The finished products are non-toxic and odorless, and can be naturally degraded without causing any pollution.

[0020] 3. The products can meet the requirements of various shapes, and the surface is smooth and shiny, which is different from plastic products in appearance, making it easy for customers to distinguish;

[0021] 4. The produced utensils are heat-resistant, oil-resistant, durable, easy to clean, solid and dense, resistant to falling and high temperature, do not contain toxic and harmful substances, and are safe to use. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] A method for preparing molded tools by recycling bamboo and wood fibers comprises the following steps:

[0025] (1) Using a 1400 type crusher to crush the collected waste bamboo and wood raw materials into plant fibers;

[0026] (2) using a 560-type pellet machine to pelletize and sieve the plant fibers to screen out fiber particles with a particle size of 60 mesh;

[0027] (3) Add 8 wt% starch adhesive into the fiber particles and send them into an SHR high-speed mixer for mixing for 15 minutes to evenly mix the fiber particles and the adhesive to obtain a mixture;

[0028] (4) The mixed material is fed into a high-frequency heat sealing machine mold, and the electromagnetic wave frequency of the high-frequency heat sealing machine is adjusted to 120 KHz, the sound wave frequency to 25 KHz, the temperature to 200° C., and the pressure to 300 t for 60 seconds to form the mixture by hot pressing.

[0029] The prepared bamboo fiber device has the natural fragrance of bamboo, has a fine and compact internal structure, is drop-resistant and high-temperature resistant, has a smooth surface without burrs and has a strong gloss.

[0030] Example 2

[0031] A method for preparing molded tools by recycling bamboo and wood fibers comprises the following steps:

[0032] (1) Using a 1400 type crusher to crush the collected waste bamboo and wood raw materials into plant fibers;

[0033] (2) using a 560-type pellet machine to pelletize and sieve the plant fibers to screen out fiber particles with a particle size of 80 mesh;

[0034] (3) Add 5 wt% tannin adhesive into the fiber particles and send them into an SHR high-speed mixer for mixing for 15 minutes to evenly mix the fiber particles and the adhesive to obtain a mixture;

[0035] (4) The mixed material is fed into a high-frequency heat sealing machine mold, and the electromagnetic wave frequency of the high-frequency heat sealing machine is adjusted to 120 KHz, the sound wave frequency to 25 KHz, the temperature to 180° C., and the pressure to 500 t is pressed for 30 seconds for hot pressing.

[0036] The prepared bamboo fiber device has the natural fragrance of bamboo, has a fine and compact internal structure, is drop-resistant and high-temperature resistant, and has a smooth and shiny surface.

[0037] Example 3

[0038] A method for preparing molded tools by recycling bamboo and wood fibers comprises the following steps:

[0039] (1) Using a 1400 type crusher to crush the collected waste bamboo and wood raw materials into plant fibers;

[0040] (2) using a 560-type pellet machine to pelletize and sieve the plant fibers to screen out fiber particles with a particle size of 100 mesh;

[0041] (3) Adding 6 wt% soybean protein adhesive into the fiber particles and sending the particles into an SHR high-speed mixer for mixing for 15 minutes to uniformly mix the fiber particles and the adhesive to obtain a mixture;

[0042] (4) The mixed material is fed into a high-frequency heat sealing machine mold, and the electromagnetic wave frequency of the high-frequency heat sealing machine is adjusted to 120 KHz, the sound wave frequency to 25 KHz, the temperature to 150° C., and the pressure to 400 t is pressed for 50 seconds for hot pressing to form the mixture.

[0043] The prepared bamboo fiber device has the natural fragrance of bamboo, has a fine and compact internal structure, is drop-resistant and high-temperature resistant, and has a smooth and shiny surface.

[0044] The invention effectively utilizes waste bamboo and wood, and the prepared bamboo and wood fiber utensils are not easy to break, do not contain plasticizers, do not release heavy metals, and are natural, healthy, beautiful and durable.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. A person skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the present invention.

Claims

1. A method for preparing molded appliances by recycling bamboo and wood fibers, characterized in that: The following steps are involved: (1) crushing bamboo and wood raw materials into plant fibers; (2) granulating and sieving the plant fibers to obtain uniform fiber particles; (3) Adding natural adhesive into the fiber particles and mixing them evenly; (4) Hot pressing.

2. The method for preparing molded tools by recycling bamboo and wood fibers according to claim 1, characterized in that: The particle size of the fiber particles described in step (2) is 60 to 100 meshes.

3. The method for preparing molded tools by recycling bamboo and wood fibers according to claim 1, characterized in that: The natural adhesive described in step (3) is a plant adhesive.

4. The method for preparing molded tools by recycling bamboo and wood fibers according to claim 3, characterized in that: The added amount of natural adhesive is 5-8wt% of fiber particles.

5. The method for preparing molded tools by recycling bamboo and wood fibers according to claim 3, characterized in that: The plant adhesive is an adhesive made of natural resin, starch, soybean protein, tannin, lignin or other carbohydrates.

6. The method for preparing molded tools by recycling bamboo and wood fibers according to claim 7, characterized in that: The pressure of hot pressing in step (4) is 300-500t, the temperature is 150-200°C, and the time is 30-60s.