Preparation process of low-odor fragrance-releasing shaving board

Abstract

The invention belongs to the technical field of artificial boards, and relates to a preparation process of a low-odor fragrance-releasing shaving board, which comprises the procedures of chipping, flaking, drying, sorting, sizing, paving, hot pressing, cooling, tempering, sanding, checking and grading, and packaging and warehousing, in the drying process, the application amount of a 5% ferrous sulfate aqueous solution is 5-10% of that of absolutely dry wood chips, and then the application amount of 10% hydrogen peroxide is 10-20% of that of the absolutely dry wood chips; in the sizing process, before the urea resin is applied, the urea resin is pumped into an intermediate storage tank, slow-release essence is added according to the proportion, and the urea resin is uniformly stirred; the slow-release essence is jasmine essential oil microemulsion, the application amount of the surface layer is 30-100g / m < 3 >, and the application amount of the core layer is 50-150g / m < 3 >. The prepared shaving board is low in smell level, according to LY / T 3236-2020 testing, the smell level is level 2, fragrance can be slowly released, the fragrance release period is longer than 2 years, and the formaldehyde release amount reaches the highest level ENF level in GB / T 39600-2021.

Description

Technical Field

[0001] The invention belongs to the technical field of artificial boards, relates to particle boards, and in particular to a preparation process of a low-odor and fragrance-releasing particle board. Background Art

[0002] my country is a major producer and consumer of wood-based panels in the world. Particleboard is one of the three major types of wood-based panels in my country. In 2023, my country's particleboard production will be 40.75 million cubic meters and consumption will be 41.16 million cubic meters. The categories mainly include: particleboard for furniture making, oriented particleboard, extruded hollow particleboard, non-wood particleboard, cement particleboard and functional particleboard. Because particleboard has good physical and mechanical properties, processability and low cost advantages, it is widely used in furniture manufacturing, engineering construction, packaging materials, interior decoration of vehicles and ships, and housings of household appliances.

[0003] In recent years, with the improvement of people's living standards, consumers have become more and more concerned about the odor problem of indoor furniture products, and odor complaints have become one of the key complaints about custom furniture. Therefore, developing a low-odor fragrance-releasing particleboard with a low odor level and acceptable to consumers is of great significance to solving the odor complaint problem of custom furniture and meeting consumers' high-quality life needs. Summary of the invention

[0004] Aiming at the odor problem of common particleboard, the purpose of the present invention is to disclose a preparation process of low-odor and fragrance-releasing particleboard.

[0005] Technical Solution

[0006] A preparation process of a low-odor and aroma-releasing particleboard, comprising the following steps: chipping, slicing, drying, sorting, gluing, paving, hot pressing, cooling, tempering, sanding, inspection and grading, packaging and warehousing, wherein:

[0007] In the chipping process, the wood raw material used is poplar peeling core material;

[0008] In the drying process, before the wood chips enter the drying process, reactive deodorant A is applied first, and then reactive deodorant B is applied; the reactive deodorant A is a 5% ferrous sulfate aqueous solution, and the applied amount is 5-10% of the absolutely dry wood chips; the deodorant B is a 10% hydrogen peroxide solution, and the applied amount is 10-20% of the absolutely dry wood chips;

[0009] In the gluing process, the surface and core layers are glued separately, the adhesive is an isocyanate-urea-formaldehyde resin two-component adhesive, and the isocyanate and urea-formaldehyde resin are applied separately; before the urea-formaldehyde resin is applied, it is first injected into the intermediate storage tank, and the slow-release flavor is added according to the proportion and stirred evenly; the slow-release flavor is jasmine essential oil microemulsion, and the surface application amount is 30-100g / m 3 , the core layer application amount is 50~150g / m3 .

[0010] According to a preferred embodiment of the present invention, during the drying process, the amount of the reactive deodorant A applied is 8% of the absolute dry wood chips.

[0011] According to a preferred embodiment of the present invention, during the drying process, the amount of the deodorant B applied is 15% of the absolute dry wood chips.

[0012] In the preferred disclosed embodiment of the present invention, in the gluing process, the amount of gluing applied to the surface layer is: urea-formaldehyde resin 10-30 kg / m 3 , isocyanate 5~15kg / m 3 .

[0013] Furthermore, the amount of sizing applied on the surface layer is: urea-formaldehyde resin 20kg / m 3 , isocyanate 10kg / m 3 .

[0014] In the preferred disclosed embodiment of the present invention, in the gluing process, the gluing amount of the core layer is: urea-formaldehyde resin 5-20 kg / m 3 , isocyanate 5~15kg / m 3 .

[0015] Furthermore, the amount of sizing applied to the core layer is: urea-formaldehyde resin 12kg / m 3 , isocyanate 10kg / m 3 .

[0016] The present invention uses poplar peeled core material. The poplar itself has a low odor level, and the peeled core material has a thinner diameter. The stacking process is conducive to the release of odor substances, which stabilizes the type of odor substances from the source of the raw materials and reduces the odor intensity. The peeled core material is the residue of large-diameter poplar peeled veneer, which is the reuse of processing residues, effectively improving resource utilization. Since the large-diameter wood material has stable characteristics, although it is a processing residue, the particleboard prepared with it has high dimensional stability, and the deformation rate of furniture products prepared with it is greatly reduced. Before the wood chips enter the drying process, a low-concentration reactive deodorant is applied, which can make the deodorant effectively penetrate into the wood chips. The high temperature of the drying process allows the reactive deodorant to better react with the odor substances in the wood chips, reducing the odor level of the wood chips; at the same time, the substance generated by the reactive deodorant after high-temperature reaction is relatively stable, and will not affect the curing of the adhesive, thereby not affecting the performance of the particleboard. The adhesive is a two-component adhesive of isocyanate-urea-formaldehyde resin. This system reduces the amount of aldehyde adhesive applied, so that the formaldehyde emission of the prepared particleboard can reach E NFgrade; at the same time, the use of two-component adhesive can solve the problem of low initial adhesion of the surface wood chips when isocyanate is used as a single component, and can also solve the problems of cutting difficulty, whitening due to pressing, and edge collapse in the secondary processing of particleboard caused by the high hardness of isocyanate curing, and can also greatly reduce the risk of isocyanate sticking to steel strips; adding jasmine essential oil microemulsion to urea-formaldehyde resin can once again give jasmine essential oil a protective layer, which can basically avoid the volatilization and destruction of components caused by high temperature in the hot pressing process, and can retain the original odor substances of the essential oil; at the same time, after the adhesive is cured, the jasmine essential oil components are wrapped in the urea-formaldehyde resin, which reduces the release rate of the essential oil and prolongs the release cycle of the fragrance components.

[0017] Beneficial Effects

[0018] The invention discloses a preparation process of a low-odor and fragrance-releasing particleboard. The prepared particleboard has a low odor level. According to the test of LY / T 3236-2020 "Grading and evaluation method of odor of artificial boards and their products", the odor level is 2, and the fragrance can be released slowly. The fragrance release cycle is greater than 2 years, and the formaldehyde release reaches the highest level E in GB / T 39600-2021 "Grading of formaldehyde release of artificial boards and their products" NF Grade, with good physical and mechanical properties, meets the performance requirements of customized furniture particleboard, can solve the problem of odor complaints of customized furniture, and meet consumers' needs for high-quality life. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the embodiments so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0020] Example 1

[0021] A preparation process of a low-odor and aroma-releasing particleboard, comprising the following steps: chipping, slicing, drying, sorting, gluing, paving, hot pressing, cooling, tempering, sanding, inspection and grading, packaging and warehousing; wherein:

[0022] In the chipping process, the wood raw material used is poplar peeling core material;

[0023] In the drying step, before the wood chips enter the drying process, reactive deodorant A is first applied, and then reactive deodorant B is applied;

[0024] The reactive deodorant A is a 5% ferrous sulfate aqueous solution, and the applied amount is 5% of the absolutely dry wood chips; the reactive deodorant B is a 10% hydrogen peroxide solution, and the applied amount is 10% of the absolutely dry wood chips;

[0025] In the gluing process, the surface and core layers are glued separately, the adhesive is an isocyanate-urea-formaldehyde resin two-component adhesive, and the isocyanate and urea-formaldehyde resin are applied separately; before the urea-formaldehyde resin is applied, it is first injected into an intermediate storage tank, and a slow-release flavor is added according to a proportion and stirred evenly;

[0026] The surface glue application amount is: urea-formaldehyde resin 20kg / m 3 , isocyanate 10kg / m 3 ;

[0027] The core layer glue application amount is: urea-formaldehyde resin 10kg / m 3 , isocyanate 10kg / m 3 ;

[0028] The slow-release essence is jasmine essential oil microemulsion, and the surface application amount is 50g / m 3 , the core layer application amount is 80g / m 3 .

[0029] The prepared finished board 1 was tested according to LY / T 3236-2020 "Odor classification and evaluation method for wood-based panels and their products", and the odor grade was 2; the formaldehyde emission was E in GB / T 39600-2021 "Grading of formaldehyde emission of wood-based panels and their products" NF Grade; can slowly release fragrance, and the fragrance release period is greater than 2 years.

[0030] Example 2

[0031] A preparation process of a low-odor and aroma-releasing particleboard, comprising the following steps: chipping, slicing, drying, sorting, gluing, paving, hot pressing, cooling, tempering, sanding, inspection and grading, packaging and warehousing, wherein:

[0032] In the chipping process, the wood raw material used is poplar peeling core material;

[0033] In the drying step, before the wood chips enter the drying process, reactive deodorant A is first applied, and then reactive deodorant B is applied;

[0034] The reactive deodorant A is a 5% ferrous sulfate aqueous solution, and the applied amount is 10% of the absolutely dry wood chips; the deodorant B is a 10% hydrogen peroxide solution, and the applied amount is 20% of the absolutely dry wood chips;

[0035] In the gluing process, the surface and core layers are glued separately, the adhesive is an isocyanate-urea-formaldehyde resin two-component adhesive, and the isocyanate and urea-formaldehyde resin are applied separately; before the urea-formaldehyde resin is applied, it is first injected into an intermediate storage tank, and a slow-release flavor is added according to a proportion and stirred evenly;

[0036] The surface glue application amount is: urea-formaldehyde resin 20kg / m 3 , isocyanate 10kg / m3 ;

[0037] The core layer glue application amount is: urea-formaldehyde resin 15kg / m 3 , isocyanate 8kg / m 3 ;

[0038] The slow-release essence is jasmine essential oil microemulsion, and the surface application amount is 60g / m 3 , the core layer application amount is 80g / m 3 .

[0039] The prepared finished board 2 was tested according to LY / T 3236-2020 "Odor classification and evaluation method for wood-based panels and their products", and the odor level was 2; the formaldehyde emission was E in GB / T 39600-2021 "Grading of formaldehyde emission of wood-based panels and their products" NF Grade; can slowly release fragrance, and the fragrance release period is greater than 2 years.

[0040] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the specification of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A process for preparing a low-odor and aroma-releasing particleboard, comprising chipping, flaking, drying, sorting, gluing, paving, hot pressing, cooling, quenching and tempering, sanding, inspection and grading, packaging and warehousing, characterized in that: In the chipping process, the wood raw material used is poplar peeling core material; In the drying process, before the wood chips enter the drying process, reactive deodorant A is applied first, and then reactive deodorant B is applied; the reactive deodorant A is a 5% ferrous sulfate aqueous solution, and the applied amount is 5-10% of the absolutely dry wood chips; the deodorant B is a 10% hydrogen peroxide solution, and the applied amount is 10-20% of the absolutely dry wood chips; In the gluing process, the surface and core layers are glued separately, the adhesive is an isocyanate-urea-formaldehyde resin two-component adhesive, and the isocyanate and urea-formaldehyde resin are applied separately; before the urea-formaldehyde resin is applied, it is first injected into the intermediate storage tank, and the slow-release flavor is added according to the proportion and stirred evenly; the slow-release flavor is jasmine essential oil microemulsion, and the surface application amount is 30-100g / m 3 , the core layer application amount is 50~150g / m 3 .

2. The process for preparing the low odor fragrance-releasing particleboard according to claim 1, characterized in that: During the drying process, the amount of the reactive deodorant A applied was 8% of the absolutely dry wood chips.

3. The process for preparing the low odor fragrance-releasing particleboard according to claim 1, characterized in that: During the drying process, the deodorant B is applied in an amount of 15% of the absolutely dry wood chips.

4. The process for preparing the low-odor aroma-releasing particleboard according to claim 1, characterized in that: In the gluing process, the amount of gluing applied on the surface is 10-30 kg / m2 of urea-formaldehyde resin. 3 , isocyanate 5~15kg / m 3 .

5. The process for preparing the low odor aroma-releasing particleboard according to claim 4, characterized in that: The surface glue application amount is urea-formaldehyde resin 20kg / m 3 , isocyanate 10kg / m 3 .

6. The process for preparing the low-odor aroma-releasing particleboard according to claim 1, characterized in that: In the gluing process, the gluing amount of the core layer is 5-20kg / m 3 , isocyanate 5~15kg / m 3 .

7. The process for preparing the low-odor aroma-releasing particleboard according to claim 6, characterized in that: The core layer sizing amount is 12kg / m 3 , isocyanate 10kg / m 3 .

8. The low odor fragrance-releasing particleboard prepared according to any one of claims 1 to 7.