CN109333746A - A kind of technique carrying out the demoulding of MDI wood-based plate using specialties - Google Patents
A kind of technique carrying out the demoulding of MDI wood-based plate using specialties Download PDFInfo
- Publication number
- CN109333746A CN109333746A CN201811215965.7A CN201811215965A CN109333746A CN 109333746 A CN109333746 A CN 109333746A CN 201811215965 A CN201811215965 A CN 201811215965A CN 109333746 A CN109333746 A CN 109333746A
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- CN
- China
- Prior art keywords
- specialties
- mdi
- demoulding
- based plate
- carrying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/12—Moulding of mats from fibres
-
- 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
-
- 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
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- 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
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
- D21H17/50—Acyclic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The present invention provides a kind of technique for carrying out the demoulding of MDI wood-based plate using specialties, it is characterized by: before carrying out hot pressing process, specialties of mating formation between heating platen and MDI artificial board blank are re-fed into hot press, in 150~220 DEG C of hot pressing temperature, 2400~3800kN/m of pressure2Under conditions of, it is demoulded after hot press solidification release, specialties are thermocompressively cured by the methods of the present invention into hair plates with MDI artificial board blank together.Solves the problems, such as MDI glue wood-based plate sticking to mould.
Description
Technical field
The present invention relates to wood-based plate releasing processes, and in particular to a kind of to carry out the demoulding of MDI wood-based plate using specialties
Technique.
Background technique
Adhesive used by Straw-based Panels is usually urea-formaldehyde resin adhesive and synvaren, uses this
The wood-based plate of a little adhesive meeting release formaldehyde during manufacture and use, influences people's health.Therefore, more and more people open
Begin research Formaldehyde Free Wood-based Panel, wherein substitutes tradition using MDI glue in Formaldehyde Free Wood-based Panel and receives people containing aldehyde adhesive
Favor.But this MDI glue makes wood-based plate be not easy the demoulding from heating platen, in order to improve such case, generally adopts at present
Method has: (1) using release agent in making sheet raw material, but to confirm that this mode cannot be solved thoroughly artificial for production practices
The problem that plate and mold are smoothly detached, when have mold sticking, influence yield rate.(2) in die surfaces such as liner plate, heating platens
Sanding powder is spread, but sanding powder is possible to be mixed into raw material and is formed together slab, is not easy to remove in subsequent sanding process, from
And the slab presentation quality resulted in is bad.
Summary of the invention
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of carry out MDI using specialties
The technique of wood-based plate demoulding.
The technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that: carry out hot pressing work
Before sequence, specialties of mating formation between heating platen and MDI artificial board blank are re-fed into hot press, in hot pressing temperature 150~220
DEG C, 2400~3800kN/m of pressure2Under conditions of, automatic demoulding after hot press solidification release, specialties are with MDI wood-based plate plate
Base is thermocompressively cured by the methods of the present invention into hair plates together.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where specialties are high temperature resistant paper or abrasion-proof paper.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where high temperature resistant paper is fabricated by following steps: step 1, using plant fiber and high temperature resistant filler, addition is anti-
High temperature resistant body paper is made in aqua, fortifier;Step 2, the one side coating of high temperature resistant body paper include fire resistant latex,
The high-temperature-resistant layer of water repellent agent, thickener;Step 3, high temperature resistant paper is obtained through pressure roller technique.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where high-temperature-resistant layer with a thickness of 0.3mm~0.6mm.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where the mass ratio of plant fiber and high temperature resistant filler is 1:0.6~0.8, and high temperature resistant filler preferably is selected from the tremolite and fills out
The mixture of one or more of material, sepiolite filler, anatase thpe white powder filler.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where fortifier is acrylic amide high polymer and cationic starch.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where thickener is agent for polyacrylic acid thickening.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where water repellent agent is selected from one or both of potassium zirconium carbonate, zirconium carbonate ammonium in step 1 and step 2.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where MDI artificial board blank is mated formation by belt of mating formation, and specialties are mated formation by reel machine, speciality paper
Pavement process it is specific as follows: step a, control are mated formation the operating synchronously of belt and reel machine, and make specialties and skin of mating formation
Band is synchronous across spreading machine, slab scale, preformer;Step b, when specialties distance mats formation belt 1mm~3mm spacing, control
MDI artificial board blank processed adheres to specialties.
In the technique provided by the invention for carrying out the demoulding of MDI wood-based plate using specialties, can also have such
Feature: where hair plates successively passes through sawing, cooling, health, process for sanding obtain finished synthetic's plate, and specialties are in sanding work
It is removed in skill.
Action and effect of the invention:
The physics and chemistry of the process makes full use specialties for carrying out the demoulding of MDI wood-based plate using specialties of the invention is special
Property, completely cut off MDI glue viscosity, under specific heat pressing process specialties can be glued together with slab raw material and with
The upper lower hot pressing board of hot press mutually binds, and avoids the plate face matter for being difficult to remove wood-based plate in subsequent demoulding or destroying wood-based plate
The problem of amount, can easily demould, substantially increase demoulding efficiency and quality of mold release.
Fire resistant special type paper of the invention is made of special formulation, and formaldehyde is not contained in ingredient, by plant fiber and
At high proportion, high temperature resistant paper made from the filler and additive of high retention rate have in the case where high-filling good water-resistance and
Dry, wet tensile (strength) meets the requirement of hot pressing isolation.Zirconium carbonate ammonium, potassium zirconium carbonate easily crosslinking curing.
Detailed description of the invention
Fig. 1 is the flow chart for carrying out the technique of MDI wood-based plate demoulding in the embodiment of the present invention using specialties.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
It applies example combination attached drawing and the present invention is specifically addressed using the technique that specialties carry out the demoulding of MDI wood-based plate.
Using specialties carry out the demoulding of MDI wood-based plate technique the following steps are included:
Step 1: raw material dresses up MDI artificial board blank on belt upper berth of mating formation in feed bin.
Step 1: it is carried out simultaneously with step 1.Specialties are mated formation continuous whole Zhang Jinhang by reel machine, and control is mated formation
Operating synchronously for belt and reel machine, keeps specialties synchronous with belt of mating formation across spreading machine, slab scale, preformer.
Step 3: when specialties distance mats formation belt 1mm~3mm spacing, it is considered as specialties at this time near belt
Place, control feed bin closing make the upper and lower surfaces of slab adhere to specialties, and specialties are diagonally cut.Adherency
Specialties are wide or slightly wider with slab.The communicated belt of slab for adhering to specialties is sent into layering hot press.
Step 4: in 150~220 DEG C of hot pressing temperature, 2400~3800kN/m of pressure2Under conditions of carry out hot pressing, hot pressing
Automatic demoulding after machine solidification release, specialties are thermocompressively cured by the methods of the present invention into hair plates with MDI artificial board blank together, realize once at
Type produces the plate finished product of high quality.
Step 5: hair plates successively passes through sawing, cooling, health, process for sanding obtain finished synthetic's plate, and specialties are in sand
It is easily removed in light technology.
Specialties are high temperature resistant paper or abrasion-proof paper.In the present embodiment, using the high temperature resistant paper made of following technique:
Step 1, using plant fiber and high temperature resistant filler, potassium zirconium carbonate water repellent agent is added, resistance to height is made in fortifier
Warm body paper.The mass ratio of plant fiber and high temperature resistant filler is 1:0.6~0.8, and high temperature resistant filler is tremolite filler, Hai Pao
The mixture of hardcore, anatase thpe white powder.Fortifier is acrylic amide high polymer and cationic starch.
It step 2, include fire resistant latex, potassium zirconium carbonate water repellent agent, polyacrylic acid in the one side coating of high temperature resistant body paper
Class thickener with a thickness of 0.3mm~0.6mm high-temperature-resistant layer.
Step 3, high temperature resistant paper is obtained through pressure roller technique.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
Claims (10)
1. a kind of technique for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that: before entering hot pressing process, in heat
Specialties of mating formation between pressing plate and MDI artificial board blank are re-fed into hot press, in 150~220 DEG C of hot pressing temperature, pressure 2400
~3800kN/m2Under conditions of, hot press solidification release after demould, the specialties with the MDI artificial board blank together
It is solidified into hair plates.
2. the technique according to claim 1 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, the specialties are high temperature resistant paper or abrasion-proof paper.
3. the technique according to claim 2 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, the high temperature resistant paper is fabricated by following steps:
Step 1, using plant fiber and high temperature resistant filler, water repellent agent is added, high temperature resistant body paper is made in fortifier;
Step 2, in the high-temperature-resistant layer that the one side coating of the high temperature resistant body paper includes fire resistant latex, water repellent agent, thickener;
Step 3, the high temperature resistant paper is obtained through pressure roller technique.
4. the technique according to claim 3 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, the high-temperature-resistant layer with a thickness of 0.3mm~0.6mm.
5. the technique according to claim 3 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, the mass ratio of the plant fiber and the high temperature resistant filler is 1:0.6~0.8,
The high temperature resistant filler preferably is selected from one or more of tremolite filler, sepiolite filler, anatase thpe white powder filler
Mixture.
6. the technique according to claim 3 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, the fortifier is acrylic amide high polymer and cationic starch.
7. the technique according to claim 3 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, the thickener is agent for polyacrylic acid thickening.
8. the technique according to claim 3 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, water repellent agent described in step 1 and step 2 is selected from one or both of potassium zirconium carbonate, zirconium carbonate ammonium.
9. the technique according to claim 1 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, the MDI artificial board blank is mated formation on belt mating formation, and the specialties are spread by reel machine
Dress,
The pavement process of the specialties is specific as follows:
Step a, operating synchronously for mat formation described in control belt and the reel machine, makes the specialties and the belt of mating formation
It synchronizes across spreading machine, slab scale, preformer;
Step b controls the MDI artificial board blank when the specialties mat formation belt 1mm~3mm spacing described in
Adhere to the specialties.
10. the technique according to claim 1 for carrying out the demoulding of MDI wood-based plate using specialties, it is characterised in that:
Wherein, the hair plates successively passes through sawing, cooling, health, process for sanding obtain finished synthetic's plate,
The specialties remove in the process for sanding.
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CN201811215965.7A CN109333746A (en) | 2018-10-18 | 2018-10-18 | A kind of technique carrying out the demoulding of MDI wood-based plate using specialties |
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CN201811215965.7A CN109333746A (en) | 2018-10-18 | 2018-10-18 | A kind of technique carrying out the demoulding of MDI wood-based plate using specialties |
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CN201811215965.7A Pending CN109333746A (en) | 2018-10-18 | 2018-10-18 | A kind of technique carrying out the demoulding of MDI wood-based plate using specialties |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110625726A (en) * | 2019-06-13 | 2019-12-31 | 南阳师范学院 | Rapid demoulding method for biomass artificial board |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110625726A (en) * | 2019-06-13 | 2019-12-31 | 南阳师范学院 | Rapid demoulding method for biomass artificial board |
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Effective date of registration: 20200430 Address after: Room 210-258, No. 15, Lane 110, Guyuan Road, Hongkou District, Shanghai 200080 Applicant after: Shanghai shihore Asset Management Co., Ltd Address before: Room 203, No. 5, Lane 149, Dongan Road, Xuhui District, Shanghai 200030 Applicant before: Wu Jun |
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WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190215 |