CN110978198A - Production process of formaldehyde-free shaving board - Google Patents

Production process of formaldehyde-free shaving board Download PDF

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Publication number
CN110978198A
CN110978198A CN201911094422.9A CN201911094422A CN110978198A CN 110978198 A CN110978198 A CN 110978198A CN 201911094422 A CN201911094422 A CN 201911094422A CN 110978198 A CN110978198 A CN 110978198A
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China
Prior art keywords
aldehyde
core layer
production
addition amount
reinforcing agent
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CN201911094422.9A
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Chinese (zh)
Inventor
王俊伟
陈秀兰
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Dare Wood Based Panel Group Co ltd
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Dare Wood Based Panel Group Co ltd
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Priority to CN201911094422.9A priority Critical patent/CN110978198A/en
Publication of CN110978198A publication Critical patent/CN110978198A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0209—Methods, e.g. characterised by the composition of the agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J103/00—Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
    • C09J103/04—Starch derivatives
    • C09J103/10—Oxidised starch
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J105/00—Adhesives based on polysaccharides or on their derivatives, not provided for in groups C09J101/00 or C09J103/00
    • C09J105/04—Alginic acid; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

The invention belongs to the technical field of artificial board processing, relates to production of a shaving board, and particularly relates to a production process of an aldehyde-free shaving boardThe addition amount of the adhesive is 50-70 kg/m3The addition amount of the reinforcing agent is 2-6 kg/m3(ii) a Applying a composite adhesive to the core layer, wherein the addition amount is 40-60 kg/m3The addition amount of the reinforcing agent is 2-6 kg/m3. The invention uses the aldehyde-free composite adhesive, ensures the safe production in the production process, has no toxicity and environmental protection, also solves the surface quality problem of the shaving board, does not need to cut edges additionally, and avoids the waste of wood resources.

Description

Production process of formaldehyde-free shaving board
Technical Field
The invention belongs to the technical field of artificial board processing, relates to production of shaving boards, and particularly relates to a production process of an aldehyde-free shaving board.
Background
The shaving board is one of the main varieties of customized household boards, and is an artificial board which is formed by processing wood or non-wood plant fiber raw materials into shavings (or crushed materials), applying adhesive and other additives, assembling and forming and hot-pressing.
Particle boards are widely used as interior materials, and particle boards made of trialdehyde resin can continuously release formaldehyde in the using process, so that human health is harmed. With the improvement of the quality of human life and the deep humanity of the low-carbon environmental protection concept, the formaldehyde-free artificial board is bound to be the development trend of the artificial board.
At present, the commercial formaldehyde-free shaving board is produced by using isocyanate resin, and although glue is non-toxic after being cured, workers still need to carry out safety protection in the production process, and the shaving board is easy to have the problems of surface cracks, soft edges and the like in the production process, and needs to be additionally trimmed compared with the common shaving board.
Disclosure of Invention
The invention aims to disclose a production process of an aldehyde-free shaving board, and the prepared shaving board has excellent performance.
Technical scheme
A production method process of an aldehyde-free shaving board comprises the steps of wood chipping → shaving pieces → wood shaving drying → screening → glue mixing → paving → prepressing → hot pressing → edge cutting → cooling → tempering → sanding → inspection and sorting → packaging and warehousing, wherein:
in the drying step, the water content of the dried wood shavings is 4.0-4.5%;
in the glue mixing and applying step, a surface core layer is adopted for layered glue application, a composite adhesive is applied to a surface layer, and the adding amount is 50-70 kg/m3The addition amount of the reinforcing agent is 2-6 kg/m3(ii) a Applying a composite adhesive to the core layer, wherein the addition amount is 40-60 kg/m3The addition amount of the reinforcing agent is 2-6 kg/m3。
In the better disclosed example of the invention, in the paving step, the water content of the wood shavings after the surface layer is glued is 17-20%, and the water content of the wood shavings after the core layer is glued is 9-12%.
In the better disclosed example of the invention, in the slab hot pressing step, the hot pressing temperature is 220-240 ℃, the hot pressing pressure is 0-3.5 MPa, and the highest pressure is 2.0-3.5 MPa.
In the preferred embodiment of the invention, the composite adhesive is prepared by mixing two or more of polyethyleneimine resin, WA wet strength agent modified thermosetting cationic polyamide-polyamine resin, PAPU modified polyamide polyamine resin and polyamide epichlorohydrin resin in any mass ratio;
the reinforcing agent is formed by mixing two or more of sodium carboxymethylcellulose, hydroxyethyl cellulose, sodium alginate and oxidized tapioca starch in any mass ratio.
In the preferred embodiment of the invention, the composite adhesive enters the surface and core layer glue blender from the gluing pipeline to be mixed with the wood shavings, and the reinforcing agent enters the surface and core layer glue blender from the feeding screw conveyor to be mixed with the wood shavings.
The composite adhesive is formed by mixing two or more of polyethyleneimine resin, WA wet strength agent (modified thermosetting cationic polyamide-polyamine resin), PAPU (modified polyamide polyamine) resin and polyamide epichlorohydrin resin in any mass ratio;
the reinforcing agent is formed by mixing two or more of sodium carboxymethylcellulose, hydroxyethyl cellulose, sodium alginate and oxidized tapioca starch in any mass ratio.
Polyethyleneimine resin, WA wet strength agent (modified thermosetting cationic polyamide-polyamine resin), PAPU (modified polyamide polyamine) resin, polyamide epichlorohydrin resin as a main adhesive agent to bond wood fines and wood shavings, and tackifier: the sodium carboxymethylcellulose, the hydroxyethyl cellulose, the sodium alginate and the oxidized tapioca starch are used for improving the molding of the shaving board blank, improving the surface quality of the board surface and improving the performance of the board to a certain extent.
Advantageous effects
The invention uses the aldehyde-free adhesive, ensures the safe production in the production process, has no toxicity and environmental protection, also solves the surface quality problem, does not need to cut edges additionally and avoids the waste of wood resources.
Detailed Description
The present invention is described in detail below with reference to examples to enable those skilled in the art to better understand the present invention, but the present invention is not limited to the following examples and further process modifications may be made without departing from the spirit and scope of the present invention.
Example 1
A production process of an 18mm aldehyde-free shaving board comprises the following steps:
1. wooden material → chippings → shavings → drying shavings (moisture content of shavings is about 4.5% after drying) → screening;
2. respectively carrying out glue mixing treatment on the surface layer wood shavings and the core layer wood shavings: the surface layer and the core layer are applied with glue layer by layer, and the addition amount of the surface layer composite adhesive is 50kg/m3(ii) a The addition amount of the core layer composite adhesive is 40kg/m3. The addition amount of the surface layer reinforcing agent is 10kg/m3(ii) a The additive amount of the core layer reinforcing agent is 6kg/m3. The surface layer composite adhesive is 50 parts of polyethyleneimine resin and 50 parts of polyamide epichlorohydrin resin; the reinforcing agent is 20 parts of sodium carboxymethylcellulose and 80 parts of oxidized cassava starch;
3. the water content of the surface layer wood shavings after glue application is about 20 percent, and the water content of the core layer wood shavings is about 11 percent;
4. and (3) layering and paving the lower surface layer, the core layer and the upper surface layer respectively through a paving system, and preparing the plate after paving, prepressing and hot pressing.
The 18mm formaldehyde-free shaving board prepared by the production process has good surface quality, the performance of the shaving board is tested according to GB/T17657 plus 2013 physicochemical property test method for artificial boards and decorative artificial boards, and the test results are as follows:
Figure BDA0002267862640000031
example 2
A production process of an 18mm high-strength aldehyde-free shaving board comprises the following steps:
1. wooden material → chippings → shavings → drying shavings (moisture content of shavings after drying is about 4.0%) → screening;
2. respectively carrying out glue mixing treatment on the surface layer wood shavings and the core layer wood shavings: surface layer wood shavings and core layer wood shavingsRespectively carrying out glue mixing treatment: the surface layer and the core layer are applied with glue in a layered way, and the adding amount of the surface layer composite adhesive is 70kg/m3(ii) a The addition amount of the core layer composite adhesive is 60kg/m3. The addition amount of the surface layer reinforcing agent is 2kg/m3(ii) a The additive amount of the core layer reinforcing agent is 2kg/m3. The surface layer composite adhesive is 15 parts of polyethyleneimine resin, 15 parts of modified thermosetting polyamide-polyamine resin, 15 parts of amide polyamine resin and 45 parts of polyamide epichlorohydrin resin; the reinforcing agent is 25 parts of sodium carboxymethylcellulose, 25 parts of hydroxyethyl cellulose, 25 parts of sodium alginate and 25 parts of oxidized cassava starch;
3. the moisture content of the surface layer wood shavings after glue application is about 18 percent, and the moisture content of the core layer wood shavings is about 9 percent;
4. and (3) layering and paving the lower surface layer, the core layer and the upper surface layer respectively through a paving system, and preparing the plate after paving, prepressing and hot pressing.
The 18mm formaldehyde-free shaving board prepared by the production process has good surface quality, the performance of the shaving board is tested according to GB/T17657 plus 2013 physicochemical property test method for artificial boards and decorative artificial boards, and the test results are as follows:
Figure BDA0002267862640000032
Figure BDA0002267862640000041
the above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (5)

1. A production process of an aldehyde-free shaving board comprises wood chipping → shaving → drying of shaving → screening → glue mixing → paving → prepressing → hot pressing → edge cutting → cooling → tempering → sanding → inspection and sorting → packaging and warehousing, and is characterized in that:
in the drying step, the water content of the dried wood shavings is 4.0-4.5%;
in the glue mixing and applying step, a surface core layer is adopted for layered glue application, a composite adhesive is applied to a surface layer, and the adding amount is 50-70 kg/m3The addition amount of the reinforcing agent is 2-6 kg/m3(ii) a Applying a composite adhesive to the core layer, wherein the addition amount is 40-60 kg/m3The addition amount of the reinforcing agent is 2-6 kg/m3。
2. A process for the production of aldehyde-free particle board according to claim 1, wherein: in the paving step, the water content of the wood shavings after the surface layer is glued is 17-20%, and the water content of the wood shavings after the core layer is glued is 9-12%.
3. A process for the production of aldehyde-free particle board according to claim 1, wherein: in the slab hot pressing step, the hot pressing temperature is 220-240 ℃, and the hot pressing pressure is 0-3.5 MPa.
4. A process for the production of aldehyde-free particle board according to claim 1, wherein: the composite adhesive is formed by mixing two or more of polyethyleneimine resin, WA wet strength agent modified thermosetting cationic polyamide-polyamine resin, PAPU modified polyamide polyamine resin and polyamide epichlorohydrin resin in any mass ratio; the reinforcing agent is formed by mixing two or more of sodium carboxymethylcellulose, hydroxyethyl cellulose, sodium alginate and oxidized tapioca starch in any mass ratio.
5. The process for the production of aldehyde-free particle boards according to claim 4 wherein: the composite adhesive enters a surface and core layer glue mixer from a gluing pipeline and is mixed with the wood shavings; and the reinforcing agent enters the surface core layer glue mixer from the feeding screw conveyor to be mixed with the wood shavings.
CN201911094422.9A 2019-11-11 2019-11-11 Production process of formaldehyde-free shaving board Pending CN110978198A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112643839A (en) * 2020-12-17 2021-04-13 福人木业（福州）有限公司 Novel wood shaving preparation process and equipment for aldehyde-free shaving board
CN113894904A (en) * 2021-09-23 2022-01-07 大亚人造板集团有限公司 Production method of thin shaving board

Citations (7)

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Publication number Priority date Publication date Assignee Title
WO1997023561A1 (en) * 1995-12-26 1997-07-03 Asahi Glass Company Ltd. Resin composition for building materials and double-glazed unit
JP2000239632A (en) * 1999-02-17 2000-09-05 Dainippon Ink & Chem Inc Strongly-adherent strippable pressure-sensitive adhesive and pressure-sensitive adhesive tape
CN101802070A (en) * 2007-08-31 2010-08-11 日本合成化学工业株式会社 Crosslinking agent, crosslinked polymer and their uses
CN102061141A (en) * 2009-11-11 2011-05-18 青岛生物能源与过程研究所 Method for preparing environmentally-friendly adhesive for lignin-based timber
CN106272865A (en) * 2016-08-29 2017-01-04 广西横县新威林板业有限公司 The method that full Eucalyptus leftover pieces produce weatherability oriented wood chipboard
CN106905918A (en) * 2015-12-23 2017-06-30 鲁吉 A kind of chemical industry adhesive
CN108329889A (en) * 2018-04-13 2018-07-27 杨奠基 A kind of Formaldehyde Free Wood-based Panel adhesive and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023561A1 (en) * 1995-12-26 1997-07-03 Asahi Glass Company Ltd. Resin composition for building materials and double-glazed unit
JP2000239632A (en) * 1999-02-17 2000-09-05 Dainippon Ink & Chem Inc Strongly-adherent strippable pressure-sensitive adhesive and pressure-sensitive adhesive tape
CN101802070A (en) * 2007-08-31 2010-08-11 日本合成化学工业株式会社 Crosslinking agent, crosslinked polymer and their uses
CN102061141A (en) * 2009-11-11 2011-05-18 青岛生物能源与过程研究所 Method for preparing environmentally-friendly adhesive for lignin-based timber
CN106905918A (en) * 2015-12-23 2017-06-30 鲁吉 A kind of chemical industry adhesive
CN106272865A (en) * 2016-08-29 2017-01-04 广西横县新威林板业有限公司 The method that full Eucalyptus leftover pieces produce weatherability oriented wood chipboard
CN108329889A (en) * 2018-04-13 2018-07-27 杨奠基 A kind of Formaldehyde Free Wood-based Panel adhesive and preparation method thereof

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Title
胡建修: "《改性聚酰胺多胺的制备及性能研究》", 《中国优秀硕士论文全文数据库》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112643839A (en) * 2020-12-17 2021-04-13 福人木业（福州）有限公司 Novel wood shaving preparation process and equipment for aldehyde-free shaving board
CN113894904A (en) * 2021-09-23 2022-01-07 大亚人造板集团有限公司 Production method of thin shaving board

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Application publication date: 20200410