CN1944080A - Method for preparing hard small handicraft using bamboo powder and/or walnut shell powder as raw material - Google Patents

Abstract

The invention relates to a method for preparing small hard handicrafts using bamboo powder and/or walnut shell powder as raw materials. The process method is: select 70-70- 89 parts by weight, sieving out impurities; drying and sterilizing bamboo and/or walnut shell particles at a high temperature of 80 to 150 degrees, and then crushing them to 20-80 mesh with a pulverizer to obtain primary raw material powder; Spray and mix 1-10 parts by weight of environmentally friendly adhesive into the raw material powder, then add 10-20 parts by weight of paper pulp, stir well, and add a certain amount of diluent according to the viscosity; form and press in the mold, and release the film , and finally apply a waterproof protective layer, and it will become a finished product after drying. The invention has the advantages of low raw material cost, wide sources, resource saving, reasonable technological process, simple operation and good product quality.

Description

A kind of preparation method of hard handicraft with bamboo powder and/or walnut shell powder as raw material

technical field

The present invention relates to a kind of preparation method of the small hard handicraft that uses bamboo powder and/or walnut shell powder as raw material, especially uses bamboo powder and/or walnut shell powder as raw material to make disposable comb, small hard handicraft daily necessities Preparation.

Background technique

Disposable combs are widely used in hotels and hotels. Cheap hard small handicrafts are also used in a large amount in daily life. At present, the raw materials selected for such products are mainly wood or plastic, which are produced by traditional methods such as carving, compression molding, and casting. Using wood as the main raw material needs to occupy limited resources, which is contrary to the purpose of establishing a conservation-oriented society in our country. Using plastic as raw material requires the consumption of non-renewable resource petroleum, and its products have the defects of being non-recyclable and non-degradable in the natural environment, which will cause environmental pollution.

my country is rich in bamboo resources and walnut resources. Bamboo products production factories leave a lot of bamboo powder and bamboo shavings besides the finished products, which become garbage and endanger the environment. A large amount of walnut shells of walnut manufacturers have also become difficult to handle garbage. Most of the current treatment methods are incineration, the energy cannot be effectively used, and harmful gases are produced at the same time, which is not conducive to environmental protection.

Contents of the invention

The technical problem to be solved by the present invention is to provide a preparation of a small hard handicraft with bamboo powder and/or walnut shell powder as raw materials, which has low raw material cost, wide sources, resource saving, reasonable process flow, simple operation and good product quality. method.

The technical solution adopted by the present invention to solve the problems of the technologies described above is the preparation method of the hard small handicraft with bamboo powder and/or walnut shell powder as raw material, and the process method is:

A, choose particle size and be 10-65 order, the bamboo and/or walnut shell particle 70-89 weight part that shape is more uniform, sieve out impurity;

b. Drying and sterilizing the bamboo and/or walnut shell particles at a high temperature of 80 to 150 degrees, and then pulverizing them to 20-80 mesh with a pulverizer to obtain primary raw material powder;

c. Spray and mix 1-10 parts by weight of an environmentally friendly adhesive into the primary raw material powder, then add 10-20 parts by weight of paper pulp, stir well, and add a certain amount of diluent according to the viscosity;

d. Forming and pressing in the mold, demoulding, and finally coating with a waterproof protective layer, and drying to become a finished product.

The environment-friendly adhesives described in the present invention are polyvinyl acetate adhesives, polyurethane/adhesives, protein adhesives, and modified starch adhesives.

The diluent described in the present invention is the diluent used in combination with the above-mentioned adhesive.

The waterproof protective layer of the present invention is polyamide epoxy resin coating, perchlorethylene coating, organic fluorine coating

The molding and pressing described in the present invention is cold pressing.

The molding and pressing of the present invention is hot pressing at 60-150 degrees in a hot pressing molding machine, and the pressure is 0.05-5 MPa.

Compared with the prior art, the present invention has the following advantages and effects: the main raw material of the present invention is wood fiber particles such as bamboo powder and/or walnut shell powder, and other added adhesives, diluents, and waterproof protective layers are all environmentally friendly The material has no pollution to the environment, can be naturally degraded, and does not cause pollution in the process of processing. Therefore, the raw materials used in the present invention are cheap and non-toxic, and the burning of its waste will not produce harmful gases. Ashes entering the soil can be used as crop fertilizers, directly Buried in the ground, it can also be degraded by microorganisms into harmless substances without pollution; the production technology of this method is simple, and it can be used to produce disposable environmental protection daily necessities such as combs, packaging boxes, and small handicrafts. Broad prospects.

Detailed ways

The present invention will be further described in detail below in conjunction with the examples, the following examples are explanations of the present invention and the present invention is not limited to the following examples.

Example 1

Put 75 kilograms of bamboo powder raw materials after sieving out impurities into the drier, and dry for 20 minutes at 120 degrees. Then the bamboo powder raw material is put into pulverizer, pulverizes and obtains 20 order bamboo powders. Add 8 kilograms of polyvinyl acetate adhesives again, put 17 kilograms of pulp into the mixer, and add water as diluent, stir to viscous state. Then, put the mixed material into a mold, press at 90-110 degrees at 0.1-0.5MPa to form a disposable comb for hotels. Natural cooling, spraying polyamide epoxy resin coating, sending it into the dryer, drying at 80 degrees for 30 minutes, cooling, inspection, disinfection, and packaging the finished product.

Example 2

Put 80 kg of walnut shell powder raw material after sifting out impurities into a drier, dry at 100 degrees for 30 minutes, until the water content is below 2%, then put the walnut shell powder raw material into a grinder, and grind to obtain 50 mesh Walnut shell powder. Then add 8 kg of polyurethane adhesive and 12 kg of paper pulp, put the above raw materials into the agitator, and stir to a viscous state. Then, put the mixed material into the mold, pre-press molding at 80-100 degrees, 0.5-1.0Mpa pressure, leave the mold for 4 hours, and further solidify. Spray pervinyl chloride paint, send it into the dryer, and dry it at 60 degrees for 15 minutes. Cool, inspect, sterilize, and pack the finished product.

Example 3

Put 40 kilograms of walnut shell powder raw materials and 30 kilograms of bamboo powder raw materials after sifting out impurities into a drier, and dry them for 30 minutes at 150 degrees until the water content is below 2% for later use; The acrylamide prepolymer is polycondensed, and then crosslinked and modified with diisocyanate to obtain 10 kg of modified starch adhesive, and then the modified starch adhesive is mixed with bamboo powder, walnut shell powder, and 20 kg of paper pulp and put into the mixer. Stir until thickened. Then, put the mixture into a mold, heat-press at 120 degrees under a pressure of 0.1-0.2Mpa for 2.5 minutes, and cool naturally. Spray polyamide epoxy resin paint, send it into the dryer, and dry it for 15 minutes at 60 degrees. Cool, inspect, sterilize, and pack the finished product.

Example 4

Put 40 kilograms of walnut shell powder raw materials and 40 kilograms of bamboo powder raw materials after sieving impurities into a drier, and dry them for 30 minutes at 120 degrees until the water content is below 2% for later use; The acrylamide prepolymer is polycondensed, and then crosslinked and modified with diisocyanate to obtain 7 kg of modified starch adhesive. Mix the modified starch adhesive with bamboo powder, walnut shell powder, and 15 kg of paper pulp and put it into the mixer. Stir until sticky. thick state. Then, put the mixture into a mold, heat-press for 2.5 minutes at 130 degrees under a pressure of 1-3Mpa, and cool naturally. Spray polyvinyl chloride paint, send it into the dryer, and dry it for 10 minutes at 50 degrees. Cool, inspect, sterilize, and pack the finished product.

Example 5

Put 40 kilograms of walnut shell powder raw materials and 40 kilograms of bamboo powder raw materials after sieving out impurities into a drier, dry them for 30 minutes at 120 degrees until the water content is below 2%, then put them into a pulverizer, and pulverize them to obtain 65 Purpose Walnut shell powder. Then add 5 kg of polyurethane adhesive and 15 kg of paper pulp, put the above raw materials into the agitator, and stir to a viscous state. Then, put the mixture into the mold, pre-compress it at 100-130 degrees and 3-5Mpa pressure, and leave it for 2 hours after demoulding to further solidify. Spray vinyl chloride paint, send it into the dryer, and dry it at 70 degrees for 15 minutes. Cool, inspect, sterilize, and pack the finished product.

Example 6

Put 60 kilograms of bamboo powder raw materials and 25 kilograms of walnut shell powder raw materials into a drier after sifting out impurities, and dry them for 40 minutes at 80 degrees. Then the bamboo powder raw material is put into pulverizer, pulverizes and obtains 20 order bamboo powders. Then add 5 kilograms of polyvinyl acetate adhesive, put 10 kilograms of pulp into the mixer, and add water as diluent, and stir until viscous. Then, put the mixture into the mold, press at 90-110 degrees, and press at 0.05-0.5MPa. Natural cooling, spraying organic fluorine paint, sending it into the dryer, drying at 80 degrees for 20 minutes, cooling, inspection, disinfection, and packaging the finished product.

Example 7

Put 32 kilograms of bamboo powder raw materials and 50 kilograms of walnut shell powder raw materials after sieving impurities into a drier, and dry them for 60 minutes at 90 degrees. Then put the bamboo powder raw material into the pulverizer, and pulverize to obtain 50 mesh bamboo powder. Add 4 kilograms of protein adhesives again, put 14 kilograms of pulp into the mixer, and add water as diluent, stir to viscous state. Then, put the mixture into the mold, press at 100-120 degrees, and press at 0.8-3MPa. Natural cooling, spraying organic fluorine paint, sending it into the dryer, drying at 80 degrees for 20 minutes, cooling, inspection, disinfection, and packaging the finished product.

Example 8

Put 28 kilograms of walnut shell powder raw materials and 50 kilograms of bamboo powder raw materials after sieving out impurities into a drier, dry them for 30 minutes at 130 degrees until the water content is below 2%, then put them into a pulverizer, and pulverize them to obtain 65 Purpose Walnut shell powder. Then add 6 kg of polyurethane adhesive and 16 kg of paper pulp, put the above raw materials into the agitator, and stir to a viscous state. Then, put the mixed material into the mold, pre-press molding at 110-140 degrees, 0.3-2Mpa pressure, leave the mold for 3 hours, and further solidify. Spray pervinyl chloride paint, send it into the dryer, and dry it at 60 degrees for 15 minutes. Cool, inspect, sterilize, and pack the finished product.

Example 9

Put 24 kilograms of bamboo powder raw materials and 50 kilograms of walnut shell powder raw materials into a drier after sieving impurities, and dry them for 60 minutes at 100 degrees. Then put the bamboo powder raw material into the pulverizer, and pulverize to obtain 50 mesh bamboo powder. Add 7 kilograms of protein adhesives again, put 19 kilograms of pulp into the mixer, and add water as diluent, stir to viscous state. Then, put the mixture into the mold, press at 100-120 degrees, and press at 1-2MPa. Natural cooling, spraying organic fluorine paint, sending it into the dryer, drying at 80 degrees for 20 minutes, cooling, inspection, disinfection, and packaging the finished product.

Example 10

Put 63 kilograms of walnut shell powder raw materials and 15 kilograms of bamboo powder raw materials after sieving impurities into a drier, dry at 140 degrees for 30 minutes until the moisture content is below 2%, then put them into a pulverizer, and pulverize to obtain 750 Purpose Walnut shell powder. Then add 9 kilograms of polyurethane adhesive and 13 kilograms of paper pulp, put the above raw materials into the mixer, and stir to a viscous state. Then, put the mixed material into the mold, pre-press molding at 110-140 degrees, 0.8-2Mpa pressure, leave the mold for 4 hours, and further solidify. Spray pervinyl chloride paint, send it into the dryer, and dry it at 60 degrees for 15 minutes. Cool, inspect, sterilize, and pack the finished product.

In the above embodiments, different handicrafts or disposable daily necessities can be produced by using different moulds.

Claims (6)

1. A method for preparing small hard crafts using bamboo powder and/or walnut shell powder as raw materials, characterized in that the process is: A, choose particle size and be 10-65 order, the bamboo and/or walnut shell particle 70-89 weight part that shape is more uniform, sieve out impurity; b. Drying and sterilizing the bamboo and/or walnut shell particles at a high temperature of 80 to 150 degrees, and then pulverizing them to 20-80 mesh with a pulverizer to obtain primary raw material powder; c. Spray and mix 1-10 parts by weight of an environmentally friendly adhesive into the primary raw material powder, then add 10-20 parts by weight of paper pulp, stir well, and add a certain amount of diluent according to the viscosity; d. Forming and pressing in the mold, demoulding, and finally coating with a waterproof protective layer, and drying to become a finished product. 2. The preparation method of bamboo powder and/or walnut shell powder as raw material of hard handicraft according to claim 1, characterized in that: the environmental-friendly adhesive is polyvinyl acetate adhesive, polyurethane/adhesive, Protein adhesives, modified starch adhesives. 3. The method for preparing small hard handicrafts made of bamboo powder and/or walnut shell powder as raw materials according to claim 1, characterized in that: said diluent is the diluent used in combination with the above-mentioned adhesive. 4, bamboo powder and/or walnut shell powder according to claim 1 is the preparation method of the hard handicraft of raw material, it is characterized in that: described waterproof protection layer is polyamide epoxy resin coating, perchlorethylene coating , organic fluorine coating 5. The method for preparing small hard handicrafts made of bamboo powder and/or walnut shell powder as raw materials according to claim 1, characterized in that: said molding is cold pressing. 6. The method for preparing small hard handicrafts made of bamboo powder and/or walnut shell powder as raw material according to claim 1, characterized in that: the molding and pressing are hot pressing at 60-150 degrees in a hot pressing molding machine Forming, the pressure is 0.05-5MPa.