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CN102189581B - Method for softening middle-density fiberboard by environment-friendly painting - Google Patents

Method for softening middle-density fiberboard by environment-friendly painting Download PDF

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Publication number
CN102189581B
CN102189581B CN201010120489.8A CN201010120489A CN102189581B CN 102189581 B CN102189581 B CN 102189581B CN 201010120489 A CN201010120489 A CN 201010120489A CN 102189581 B CN102189581 B CN 102189581B
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CN
China
Prior art keywords
softening
density fiberboard
brushing
painting
standing
Prior art date
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.)
Expired - Fee Related
Application number
CN201010120489.8A
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Chinese (zh)
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CN102189581A (en
Inventor
李军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Forestry University
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Nanjing Forestry University
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Filing date
Publication date
Application filed by Nanjing Forestry University filed Critical Nanjing Forestry University
Priority to CN201010120489.8A priority Critical patent/CN102189581B/en
Publication of CN102189581A publication Critical patent/CN102189581A/en
Application granted granted Critical
Publication of CN102189581B publication Critical patent/CN102189581B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a method for softening a middle-density fiberboard by environment-friendly painting. The method comprises the following steps: I, adopting alcohol as softening liquid, wherein 20-100% alcohol accounts for 0.06944; II, softening: uniformly painting the softening liquid on the part of the middle-density fiberboard to be subjected to mold pressing, wherein the painted area is larger than the mold pressing area; and standing for 2-3 minutes; III, further painting the softening liquid on the corresponding part of the middle-density fiberboard, and standing for 2 minutes; and IV, painting corresponding parts on the front and back; if water appears on the painted surface, standing for 2-3 minutes; and painting for a second time before standing. The method has the advantages that the color of the middle-density fiberboard is not changed before and after softening, the softening performance of the softening liquid is superior to that of ammonia water, and waste water and gas are not produced during softening. The middle-density fiberboard maintains the original physical characteristics. The wood products, such as wood molded doors, fruit trays and the like, can be obtained under the combined action of a hot press and a metal mold by using the middle-density fiberboard softening technology. Besides, the wood is saved, the wood utilization rate is improved, and pollution is avoided.

Description

The method of the softening medium-density plate of environment-friendly type brushing
Technical field
What the present invention relates to is the method for the softening medium-density plate of a kind of environment-friendly type brushing, utilizes usual vehicle brushing to infiltrate medium-density plate (MDF) and realizes softening method, belongs to medium-density plate (MDF) softening technology field.
Background technology
MDF (medium-density plate) softening method is for adopting the method for ammoniacal liquor immersion at present.By the softening shortcoming of ammoniacal liquor, be that bating effect is general, can produce with the gas of intense stimulus smell and the waste water of contaminated environment simultaneously, also not yet find so far to adopt the softening MDF of the inventive method.As everyone knows; MDF is the brush wood that utilizes timber, the product that leftover bits and pieces is produced; it is mainly the effect that plays twice laid; but utilize often cracking phenomena out of the softening pressing of ammoniacal liquor; production efficiency and product quality have been affected; pollute environment simultaneously, do not met national industrial policies, be therefore badly in need of head it off.
Summary of the invention
What the present invention proposed is the method for the softening medium-density plate of a kind of environment-friendly type brushing; utilize usual vehicle brushing to infiltrate medium-density plate (MDF); realize the softening method of medium-density plate (MDF); its object is to overcome the existing above-mentioned defect of prior art, by MDF, softens after treatment technology, through the acting in conjunction of hot press and mould, makes the woodworks such as wooden molded door and fruit tray; save timber; improve timber utilization rate, without waste water and waste gas, produce simultaneously, protected environment.
Technical solution of the present invention: utilize usual vehicle brushing to infiltrate medium-density plate and realize softening method, it is characterized in that the method comprises following processing step, one, bating liquor usual vehicle, its composition is alcohol, bating liquor is weight ratio: the alcohol that concentration is 20%-100% accounts for 0.06944; Two, softening: bating liquor is evenly brushed and needed mold pressing position at medium-density plate (MDF), and its area is greater than mold pressing area, standing 2-3 minute; Three, medium-density plate (MDF) corresponding position brushing bating liquor again, standing 2 minutes; Four, the position corresponding positive and negative of medium-density plate all needs brushing, if when there is open fire on medium-density plate surface after brushing, needs standing 2-3 minute, then brush second time, more standing 2-3 minute.
Advantage of the present invention: after softening, the color of medium-density plate (MDF) is constant, and softening performance is better than ammoniacal liquor softening performance, and the softening while does not produce any waste water and waste gas.MDF has kept the feature of original physics.By MDF, soften after treatment technology, through the acting in conjunction of hot press and mould, make the woodworks such as wooden molded door and fruit tray, save timber, improve timber utilization rate, without waste water and waste gas, produce simultaneously, protected environment.
The specific embodiment
Embodiment, softening process step:
Configuration softening agent solution: get 30 liters of the industrial alcohols of concentration 99.9%, 70 liters, clean running water mixes both in container, stirs stand-by; Softening: to choose medium-density plate (MDF), determine and need crooked position, with hairbrush, dip in the brushing of configuration softening agent in appointed part, and brushing area will exceed prescribed limit, after softening agent immerses medium-density plate (MDF), then at the identical softening agent of reverse side corresponding position brushing, require evenly, standing surperficial without open fire phenomenon to brushing, twice repeatedly.
Compare with ammoniacal liquor is softening, adopt ammoniacal liquor to have the above time of 5-6 as softening agent, in theory in the past, ammoniacal liquor is softening agent, but alcohol just as solvent, processes or bleeding agent is used, and as softening agent, uses and not yet have report.
Environmental protection: this method produces without waste water and waste gas, is applicable to large-scale production; Ammoniacal liquor is softening has waste water and waste gas generation, and wastewater flow rate is larger, if process waste water, once investment is very high, and standing charges are higher.
Cycle: this method adopts brushing method, and the time was about about 10 minutes.Adopting ammoniacal liquor softening is generally the method for soaking, and the time is about 4 hours or is longer.
Intensity, this method is not destroyed MDF original structure, has therefore kept the intensity of MDF.WITH AMMONIA TREATMENT can be destroyed MDF structure, and then again passes through hot gluing together, so its intensity is much smaller than this method.MDF is after long-time immersion, and it is soft that its structure can become, and plank can lose intensity.
Mechanism: this method is to utilize the polarity of alcohol strong, infiltrative feature.The polarity of ammoniacal liquor is not as alcohol, and ammoniacal liquor highly volatile under normal temperature, thereby loses bating effect, so need long-time immersion, allows moisture content and the ammoniacal liquor remaining in plate jointly play emollescence.MDF is the plank being formed through a small amount of spot gluing of adhesive by wood-fibred, the lignin that also has of gummed effect gets up simultaneously, after ammoniacal liquor long period of soaking, lignin gummed part can bubble open, lose gummed effect, simultaneously because adhesive point-like gummed amount (normal plate resin added is no more than 6%) very little, so plank intensity sharply declines.

Claims (1)

1. the method for the softening medium-density plate of environment-friendly type brushing, is characterized in that configuring softening agent solution: get 30 liters of the industrial alcohols of concentration 99.9%, 70 liters, clean running water mixes both in container, stirs stand-by; Softening: to choose medium-density plate (MDF), determine and need crooked position, with hairbrush, dip in the brushing of configuration softening agent in appointed part, and brushing area will exceed prescribed limit, after softening agent immerses medium-density plate (MDF), then at the identical softening agent of reverse side corresponding position brushing, brushing evenly, standing surperficial without open fire phenomenon to brushing, twice repeatedly.
CN201010120489.8A 2010-03-09 2010-03-09 Method for softening middle-density fiberboard by environment-friendly painting Expired - Fee Related CN102189581B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010120489.8A CN102189581B (en) 2010-03-09 2010-03-09 Method for softening middle-density fiberboard by environment-friendly painting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010120489.8A CN102189581B (en) 2010-03-09 2010-03-09 Method for softening middle-density fiberboard by environment-friendly painting

Publications (2)

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CN102189581A CN102189581A (en) 2011-09-21
CN102189581B true CN102189581B (en) 2014-02-26

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CN201010120489.8A Expired - Fee Related CN102189581B (en) 2010-03-09 2010-03-09 Method for softening middle-density fiberboard by environment-friendly painting

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU942813A1 (en) * 1979-04-28 1982-07-15 Украинский Научно-Исследовательский Институт Механической Обработки Древесины Method of producing coatings on wooden articles
US5573829A (en) * 1991-02-07 1996-11-12 Pittcon Industries, A Division Of American Metal Forming Corporation Laminated board having gypsum core and wood veneer lamination with debossed designs

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850550B2 (en) * 1979-07-25 1983-11-11 アイカ工業株式会社 How to apply thick paint

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU942813A1 (en) * 1979-04-28 1982-07-15 Украинский Научно-Исследовательский Институт Механической Обработки Древесины Method of producing coatings on wooden articles
US5573829A (en) * 1991-02-07 1996-11-12 Pittcon Industries, A Division Of American Metal Forming Corporation Laminated board having gypsum core and wood veneer lamination with debossed designs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP昭56-17666A 1981.02.19

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