CN102189572A - Manufacturing method for mould forming of environment-friendly middle-density board - Google Patents
Manufacturing method for mould forming of environment-friendly middle-density board Download PDFInfo
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- CN102189572A CN102189572A CN2010101204807A CN201010120480A CN102189572A CN 102189572 A CN102189572 A CN 102189572A CN 2010101204807 A CN2010101204807 A CN 2010101204807A CN 201010120480 A CN201010120480 A CN 201010120480A CN 102189572 A CN102189572 A CN 102189572A
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Abstract
The invention relates to a manufacturing method for the mould forming of an environment-friendly middle-density board. The manufacturing method is characterized by comprising the following processing steps of: selecting a middle-density board which takes softwood as a raw material; preparing a softener; softening a mould pressing board; forming the mould pressing board; and putting the pressure-released and formed mould pressing board in a postprocessing chamber for constant temperature and humidity processing. The manufacturing method has the advantages that: the utilization rate of the material can be increased; and the effect identical to that of the three-dimensional contouring of solid woods can be realized just by covering a layer of veneer on the mould pressing board without the need of cutting wood. According to the manufacturing method disclosed by the invention, waste water and exhaust gas are not produced and the large-scale and sustainable-development mould forming requirements are realized. The mechanical strength of a wooden door made of the mould pressing board is far stronger than that of a wooden mould pressing board processed by ammonia water and is not lower than that of the wooden door in unit weight, but the weight of the wooden door is far lighter than that of a solid wood door. The manufacturing method has identical advantages when used for producing fruit trays. The manufacturing method has the advantages of simpleness, remarkably effect, easiness in operation, environment-friendliness and convenience for popularization and application.
Description
Technical field
What the present invention relates to is a kind of environment-friendly type medium-density plate (MDF) die forming manufacture method, belongs to woodwork manufacturing technology field.
Background technology
Along with environmental protection consciousness strengthens, the timber supply amount can not satisfy people's living needs far away, therefore adopts the products such as the alternative solid wood wooden door of wooden door of MDF die forming just to become more and more universal, and is subjected to more and more consumers' welcomes.The manufacture process of MDF die forming is after soaking by ammoniacal liquor, to utilize the metal die heating to make it to be shaped again at present.Ammoniacal liquor softening process and hot pressing have produced a large amount of waste water and waste gas, have polluted surrounding enviroment, the confined category of the real genus of ammoniacal liquor softening process and mold pressing manufacturing technology thereof.
Summary of the invention
What the present invention proposed is a kind of manufacture method of environment-friendly type medium-density plate die forming, be intended to substitute the softening and mould pressing process process of ammoniacal liquor by novel softening method and novel moulded technology comprehensively, overcome defectives such as mold process cracking, be implemented in purpose free from environmental pollution in the MDF pressing production process in enormous quantities.
Technical solution of the present invention: it is characterized in that this method comprises following processing step: one, select medium-density plate, choose the medium-density plate that softwood is a raw material, thickness is 3mm, and its specification is cut out as required and cut, as Yishanmen breadth, 900mm*2100mm;
Two, preparation softening agent, the alcoholic solution of preparation 20%-99% is then used 30 liters of technical grade alcohol, mixes 70 literss of water again, mixing for standby use;
Three, adopt cylinder or select for use hairbrush to dip in softening agent needs die forming then at moulded board position, evenly roller coating is one time, when waiting to be coated with the no open fire in surface, be coated with again one time at the reverse side antimere again, wait not have open fire after, repeat the roller coating of above-mentioned action positive and negative, after finishing two times brushings, standby;
Four, divide once die stamping forming or a veneer die forming, once die stamping forming is that the hot press with the fixing metal mould is heated to 230 ℃, and standby mold pressing slab is put among the metal die, and closing speed is 2cm/min, and pressure is 2-3Kg/cm
2, the dwell time is 2-3 minute, after the release with the moulded board demoulding of die forming; A veneer die forming is to need shape and size to cut in advance according to the mold pressing position wooden dermatome, and becomes whole with the PUR linear slit, and this moment, wooden skin parquets pattern need meet timber shape-designing needs.With standby mold pressing slab, after single face is coated with white glue with vinyl, again with make wooden skin assembly, hot press with the fixing metal mould is heated to 230 ℃ simultaneously, the mold pressing slab behind the standby assembly is put among the metal die, closing speed is 2cm/min again, and pressure is 2-3Kg/cm
2, the dwell time is 2-3 minute, promptly finishes the environment-friendly type medium-density plate die forming manufacture method of synchronous forming and veneer after the release.
Five, the moulded board that release is shaped is put in the post-processed chamber, handles through constant temperature and humidity, and concrete parameter is that temperature is 30-40 ℃, and humidity is 70-80%, handles 5-6 hour.(this step is an alternate item, adopts when being intended to further improve the quality of products).
Advantage of the present invention: realized protection environment in production process, improved the mechanical strength of medium-density plate die forming, improved the utilization rate of material.Increase and paste wooden skin action synchronously, the consumption of then satisfying minimizing log, because originally the wooden door of three-dimensional contouring all need could be realized moulding through planing or a certain amount of timber of milling, and the present invention need not to cut timber, only need be covered with the effect same that one deck wood skin can be realized solid wood three-dimensional contouring door on molding forming board again.The environmental protection softening method does not promptly produce waste water and waste gas, thereby has realized the sustainable development of die forming, is particularly suitable for large-scale production.With the wooden door that environmental protection MDF die forming is made, its mechanical strength be not less than the solid wood wooden door intensity of same Unit Weight, but its weight goes far to be lighter than the weight of solid wood wooden door far above the wooden door of the softening MDF die forming of ammoniacal liquor.If be used for the production of fruit tray, then also has same advantage.This method is simple, effect obvious, operate, protect environment, easy to utilize and large-scale production easily.
The specific embodiment
Embodiment 1, once die stamping forming:
Technological process: (1) selects MDF, chooses the MDF that softwood is a raw material, and thickness is 3mm, and its specification is cut out as required and cut, as Yishanmen breadth, 900mm*2100mm.(2) the preparation softening agent is promptly used 30 liters of technical grade alcohol, mixes 70 literss of water again, mixing for standby use.(3) adopt cylinder (model is medium staple length) to dip in softening agent needs die forming then at moulded board position, evenly roller coating is one time, when waiting to be coated with the no open fire in surface, is coated with one time at the reverse side antimere more again, wait not have open fire after, repeat the roller coating of above-mentioned action positive and negative.After finishing two times brushings, standby.(4) hot press with fixing metal mould (mould is the negative and positive mould) is heated to 230 ℃, and standby mold pressing slab is put among the metal die, and closing speed is 2cm/min, and pressure is 2-3Kg/cm
2, the dwell time is 2-3 minute, after the release with the moulded board demoulding of die forming.(5) moulded board that release is shaped is put in the post-processed chamber, (concrete treatment process makes the wood equilibrium moisture content of land used different and different according to this product through the constant temperature and humidity processing, and this step is an alternate item, adopts when being intended to further improve the quality of products).
2, veneer die formings of embodiment:
Technological process: (1) selects MDF, and choosing softwood is the MDF plate of raw material, and thickness is 3mm, and its specification is cut out as required and cut, as Yishanmen breadth, 900mm*2100mm.(2) the preparation softening agent is promptly used 30 liters of technical grade alcohol, mixes 70 literss of water again, mixing for standby use.(3) adopt cylinder (model is medium staple length) to dip in softening agent needs die forming then at moulded board position, evenly roller coating is one time, when waiting to be coated with the no open fire in surface, is coated with one time at the reverse side antimere more again, wait not have open fire after, repeat the roller coating of above-mentioned action positive and negative.After finishing two times brushings, standby.(4) wooden dermatome is cut in advance according to the mold pressing position, and become whole with the PUR linear slit, this moment, wooden skin parquets pattern designed according to timber moulding needs.(5) with standby mold pressing slab, after single face is coated with white glue with vinyl, again with the wooden skin assembly of making of (4) step.(6) hot press with fixing metal mould (mould is the negative and positive mould) is heated to 230 ℃, and the mold pressing slab behind the standby assembly is put among the metal die, and closing speed is 2cm/min, and pressure is 2-3Kg/cm
2, the dwell time is 2-3 minute, after the release with the moulded board demoulding of die forming.(5) moulded board that release is shaped is put in the post-processed chamber, (concrete treatment process makes the wood equilibrium moisture content of land used different and different according to this product through the constant temperature and humidity processing, and this step is an alternate item, adopts when being intended to further improve the quality of products).
This method does not have waste water and waste gas produces, and is fit to large-scale production;
Ammoniacal liquor is softening to have waste water and waste gas generation, and wastewater flow rate is bigger, if handle waste water, once investment is very high, and standing charges are than higher.
Cycle: this method adopts brushing method, and the time was about about 10 minutes.
Adopting ammoniacal liquor softening generally is the method for soaking, and the time is about 4 hours or is longer.
Intensity: this method is not destroyed the MDF original structure, has therefore kept the intensity of MDF.
WITH AMMONIA TREATMENT then can be destroyed the MDF structure, and then passes through hot gluing again together, so its intensity is much smaller than this method.MDF is through after soaking for a long time, 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 characteristics.The polarity of ammoniacal liquor is not as alcohol, and ammoniacal liquor highly volatile under the normal temperature, thereby loses bating effect, so need long-time the immersion, allows moisture content and the ammoniacal liquor that remains in the plate play emollescence jointly.MDF is the plank that is formed through a small amount of spot gluing of adhesive by wood-fibred, the lignin that also has of gummed effect simultaneously gets up, after the ammoniacal liquor long period of soaking, lignin gummed part can be steeped and be held, lose the gummed effect, simultaneously because adhesive point-like gummed amount (normal plate resin added is no more than 6%) very little, so plank intensity sharply descends.
Claims (1)
1. the manufacture method of environment-friendly type medium-density plate die forming, it is characterized in that this method comprises following processing step: one, select medium-density plate, choose the medium-density plate that softwood is a raw material, thickness is 3mm, its specification is cut out as required and is cut, and the Yishanmen breadth then is 900mm*2100mm in this way;
Two, preparation softening agent, the alcoholic solution of preparation 20%-99% is then used 30 liters of technical grade alcohol, mixes 70 literss of water again, mixing for standby use;
Three, adopt cylinder or select for use hairbrush to dip in softening agent needs die forming then at moulded board position, evenly roller coating is one time, when waiting to be coated with the no open fire in surface, be coated with again one time at the reverse side antimere again, wait not have open fire after, repeat the roller coating of above-mentioned action positive and negative, after finishing two times brushings, standby;
Four, divide once die stamping forming or a veneer die forming, once die stamping forming is that the hot press with the fixing metal mould is heated to 230 ℃, and standby mold pressing slab is put among the metal die, and closing speed is 2cm/min, and pressure is 2-3Kg/cm
2, the dwell time is 2-3 minute, after the release with the moulded board demoulding of die forming; A veneer die forming is to need shape and size to cut in advance according to the mold pressing position wooden dermatome, and becomes whole with the PUR linear slit, and this moment, wooden skin parquets pattern need meet timber shape-designing needs.With standby mold pressing slab, after single face is coated with white glue with vinyl, again with make wooden skin assembly, hot press with the fixing metal mould is heated to 230 ℃ simultaneously, the mold pressing slab behind the standby assembly is put among the metal die, closing speed is 2cm/min again, and pressure is 2-3Kg/cm
2, the dwell time is 2-3 minute, promptly finishes the environment-friendly type medium-density plate die forming manufacture method of synchronous forming and veneer after the release;
Five, the moulded board that release is shaped is put in the post-processed chamber, handles through constant temperature and humidity, and concrete parameter is that temperature is 30-40 ℃, and humidity is 70-80%, handles 5-6 hour.
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| CN 201010120480 CN102189572B (en) | 2010-03-09 | 2010-03-09 | Manufacturing method for mould forming of environment-friendly middle-density board |
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| CN 201010120480 CN102189572B (en) | 2010-03-09 | 2010-03-09 | Manufacturing method for mould forming of environment-friendly middle-density board |
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| CN102189572A true CN102189572A (en) | 2011-09-21 |
| CN102189572B CN102189572B (en) | 2013-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531755A (en) * | 2018-12-11 | 2019-03-29 | 会泽清彪商贸有限公司 | A kind of processing method of high-quality classic furniture |
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| GB1143571A (en) * | ||||
| US2003752A (en) * | 1932-10-15 | 1935-06-04 | Continental Diamond Fibre Co | Bendable laminated product |
| US3212948A (en) * | 1962-11-15 | 1965-10-19 | Cons Packaging Corp | Method of forming a shaped product |
| CN1084238A (en) * | 1993-08-13 | 1994-03-23 | 中国林业科学研究院木材工业研究所 | A kind of production technology of plant fiber molding goods |
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| CN1928312A (en) * | 2006-09-27 | 2007-03-14 | 费恺 | Wood door board |
| CN101116977A (en) * | 2007-08-29 | 2008-02-06 | 桦甸市惠邦木业有限责任公司 | Solid wood composite coining door panel and production technology thereof |
| CN101204909A (en) * | 2007-12-20 | 2008-06-25 | 广西大学 | Producing method of wood of bamboo wood microscopic structure printing pattern |
| CN201380527Y (en) * | 2009-01-23 | 2010-01-13 | 桦甸市惠邦木业有限责任公司 | Molded fiberboard with melamine veneer |
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2010
- 2010-03-09 CN CN 201010120480 patent/CN102189572B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1143571A (en) * | ||||
| US2003752A (en) * | 1932-10-15 | 1935-06-04 | Continental Diamond Fibre Co | Bendable laminated product |
| US3212948A (en) * | 1962-11-15 | 1965-10-19 | Cons Packaging Corp | Method of forming a shaped product |
| CN1084238A (en) * | 1993-08-13 | 1994-03-23 | 中国林业科学研究院木材工业研究所 | A kind of production technology of plant fiber molding goods |
| CN1348853A (en) * | 2000-10-12 | 2002-05-15 | 深圳市福英达工业技术有限公司 | Molded fiber product making process by using medium-density fiber board as base material |
| CN1928312A (en) * | 2006-09-27 | 2007-03-14 | 费恺 | Wood door board |
| CN101116977A (en) * | 2007-08-29 | 2008-02-06 | 桦甸市惠邦木业有限责任公司 | Solid wood composite coining door panel and production technology thereof |
| CN101204909A (en) * | 2007-12-20 | 2008-06-25 | 广西大学 | Producing method of wood of bamboo wood microscopic structure printing pattern |
| CN201380527Y (en) * | 2009-01-23 | 2010-01-13 | 桦甸市惠邦木业有限责任公司 | Molded fiberboard with melamine veneer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531755A (en) * | 2018-12-11 | 2019-03-29 | 会泽清彪商贸有限公司 | A kind of processing method of high-quality classic furniture |
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Effective date of registration: 20160622 Address after: 230011 C-04 block, Hongqi Industrial Park, Hefei Yu Road, Yaohai District, Anhui, Hefei Patentee after: Ke Laifu household limited company Address before: Nanjing City, Jiangsu province Longpan road 210037 No. 159 Nanjing Forestry University Institute of wood industry Patentee before: Nanjing Forestry University |