CN102198675A - Preparation method of ecological plate - Google Patents
Preparation method of ecological plate Download PDFInfo
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- CN102198675A CN102198675A CN2011101018634A CN201110101863A CN102198675A CN 102198675 A CN102198675 A CN 102198675A CN 2011101018634 A CN2011101018634 A CN 2011101018634A CN 201110101863 A CN201110101863 A CN 201110101863A CN 102198675 A CN102198675 A CN 102198675A
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- ecological plate
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- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 29
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 20
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000009472 formulation Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000002023 wood Substances 0.000 abstract description 8
- 239000000758 substrate Substances 0.000 abstract description 6
- 239000003973 paint Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000003292 glue Substances 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000007639 printing Methods 0.000 abstract description 3
- 229920000298 Cellophane Polymers 0.000 abstract 3
- 238000000034 method Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 241000219000 Populus Species 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 239000011120 plywood Substances 0.000 description 3
- 241000130249 Aucoumea klaineana Species 0.000 description 2
- 244000050510 Cunninghamia lanceolata Species 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 240000008027 Akebia quinata Species 0.000 description 1
- 235000007756 Akebia quinata Nutrition 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000019256 formaldehyde Nutrition 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a preparation method of an ecological plate, which comprises the following steps of: step 1, preparing melamine impregnated cellophane paper, wherein glue content is increased by 15-20% in the preparation process in comparison with a traditional formula; step 2, attaching the melamine impregnated cellophane paper on special-shaped veneers; step 3, preparing an intermediate substrate; step 4, respectively adhering the veneers attached with the melamine impregnated cellophane paper to two surfaces of the intermediate substrates, and pressing and heating the two surfaces of the intermediate substrate to get the ecological plate. In the preparation method provided by the invention, a grainy paper for printing substitutes a natural wood material to serve as a decorative finish of the plate, so that usage amount of wood is greatly reduced, and non-renewable resource is saved; oil paint is substituted after the surface of the plate is impregnated by melamine, so that cost on processing is greatly saved, processing time is greatly shortened, and environmental performance of the preparation method is far better than that of the conventional production method; and the prepared ecological plate is excellent in surface abrasive resistance, scratch resistance, stain resistance and fire resistance, and is fashionable in design and color expression, so that the prepared ecological plate can meet the requirements of different consumers.
Description
Technical field
The present invention relates to the ecological plate of a kind of household raw material and sheet material technical field, specifically, that relate to is a kind of preparation method of ecological plate.
Background technology
Employed sheet materials such as furniture, house ornamentation are broadly divided on the domestic market at present: workblank sheet material, woodwork plate, three-ply board, facing plate, density board, particieboard etc.Common sheet material is used and generally is divided in the industry: brush paint, paster, subsides three ammonia gummed papers etc., all difference exists drawback and defective, there are problems such as machining limit length, not environmental protection, peculiar smell long-term existence, surface effect artisan craftsmanship difference in the normal domestic processing method, and producer's pressed sheet exists substantially that burst size of methanal is big, moisture-sensitive, problems such as glue consumption is big, expansion rate of water absorption is high, severe environmental pollution.
Also have at present at the related invention of the problems referred to above and create, as: Chinese disclosed patent CN101108496, this patent provides a kind of production technology of melamine veneered decorated board, step is: with the core-board that processes or multi-plywood as substrate, be coated with urea-formaldehyde resin adhesive respectively on the substrate two sides, be covered with the ultrapas gum dipped paper with being coated with on the two sides glue-line of substrate of gluing, at room temperature closed the placement 1～60 minute, make its bonding naturally typing, with above-mentioned plate after displaying, directly send into the hot press that above-mentioned steel plate is housed, quick-make, temperature is controlled at 60～180 ℃, pressure is controlled at 9～19KG, suppress and to go out finished product in 1～10 minute.And for example Chinese disclosed patent CN101564852A, this patent provides also a kind of production technology of melamine veneered decorated board.It adopts following production stage: make core-board or multi-plywood earlier; The ultrapas impregnated paper is overlayed on the veneer, send into hot press, this hot press pressure is controlled at 10～20KPA, initial temperature is 40～50 ℃, temperature is raised to 100～160 ℃ in 10～20 minutes, is incubated after 5～10 minutes, is cooled to 40～50 ℃ gradually, again through gluing, assembly, cold pressing, hot pressing process, this veneer is compounded on the core-board of making or multi-plywood.Above-mentioned patented technology all is to replace base materials such as traditional density board and particieboard with woodwork plate and glued board etc., explained hereafter method by low temperature, little pressure, long-time pressurize, repeatedly compacting is produced, can't realize volume production, mortality defective such as the product of producing a large amount of layerings occur, comes unstuck in the later stage use, distortion, case hardness, anti-zoned property and wearability are relatively poor.
Summary of the invention
The objective of the invention is to solve above-mentioned deficiency of the prior art, a kind of preparation method of ecological plate is provided, ecological plate environmental protection, the wearability of this method preparation are good, have good anti-zoned property, anti-pollution, anti-flammability, can carry out large batch of production.
For realizing above-mentioned purpose, the preparation method of ecological plate of the present invention comprises the steps:
At traditional particieboard with overlay melamine impregnated paper above the density board, normal melamine impregnated paper spread is in the general industry: the content 50%～70% of melamine, arrive 110～130% ratios of paper on the three ammonia spreads, fugitive constituent normal contents: 4.5～5.5, be different from traditional melamine gum dipping process in the present invention, in immersing glue process: the content of melamine transfers to 70～100%, the spread ratio of three ammonia reaches: 145～160%, volatile content transfers to: 5.0～6.5, modulation three ammonia gummed papers overlaying on wooden skin by above-mentioned gum dipping process can not occur that everybody still adopts traditional gum dipped paper prescription to overlay out a large amount of defectives that finished product occurs in the industry at present, mainly show: surperficial dried flower, wet flower, bright spot, the pin hole eye of wood skin, the surface does not bear dirty, and fire-retardant and humidity resistance is poor, melamine impregnation performance has not been given play to function corresponding.Outward appearance to whole finished product plays vital decisive action.
The wooden skin thickness of normal employing in the field of business: 15～45 S, the wooden skin thickness of abnormity of the present invention requires about 60～80S, the standard of size four or eight chis requires: whole wooden skin can not have horizontal cutter seal when not having fast knot, no small holes caused by worms, no male and female face, no color differnece, no card rotary-cut, rotary-cut.The kind of wood skin is chosen at present and is mainly concentrated on: several materials aspects such as Okoume, dammara, poplar, weedtree.
Described overlaying is meant: the melamine-impregnated bond paper is lain in a horizontal plane on the special-shaped wooden skin, put into press afterwards, compacting promptly.
Described press is single drylight presses or multidaylight press.
Described compacting is specially: the temperature of press bolster is 150～180 ℃, and pressure is 20～25Pa, and the dwell time is 1～3 minute.
Base material is wooden central layer in the middle of described.
Described wooden central layer is circuit board, lumber core or multi-layer sheet.
Step 4 is pasted the wooden skin of melamine-impregnated bond paper paste respectively on two faces of middle base material, compacting, and heating gets ecological plate.
The wooden skin of melamine-impregnated bond paper paste is pasted respectively on two faces of middle base material, level is put into the multidaylight press of stainless steel bound edge (for increasing work efficiency, can choose multidaylight press), gauge tap by multidaylight press is the steel plate of closed multidaylight press simultaneously, temperature is transferred to 120 ℃, the pressure of multidaylight press is transferred to 12-15 Pa, and the dwell time is 2-5 minutes.Be different from the industry generally and utilize, low-pressure, low temperature, long-time pressurize or realize the bonding of sheet material by the means of colding pressing.Parameter of the present invention is higher than the parameter of general in the industry way, the finished product of making possess gummed power strong, not stratified, add not the sound of sth. throbbing or bursting limit, the characteristics of not digging mouthful of man-hour, be fit to volume production.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention on the wooden skin of abnormity, utilizes the woodgrained paper of printing to replace natural wooden facing as sheet material the melamine-impregnated bond paper paste, greatly reduces the use amount of timber, has saved non-renewable resources;
2, behind the plate surface process melamine impregnation of the present invention's preparation, can replace paint, save cost of processing greatly, the time of processing also shortens greatly, and environmental-protecting performance is the production method of ultra-traditional far away also;
3, the product of the present invention's preparation has the melamine protective layer through melamine impregnation rear surface, and wearability is very good, anti-zoned property, anti-pollution, anti-flammability, and pattern expression aspect fashion can satisfy different consumer demands simultaneously.
Description of drawings
Fig. 1 is the structural representation of the ecological plate of the embodiment of the invention.
The specific embodiment
The technical solution of the present invention is further explained below in conjunction with drawings and Examples, but following content is not intended to limit the scope of the invention.
Fig. 1 is the structural representation of ecological plate, and the structure of this ecology plate comprises melamine-impregnated bond paper 1, special-shaped wooden skin 2 and middle base material 3.The method for preparing ecological plate comprises the steps:
The wooden skin thickness of described abnormity requires about 60S, and the standard of size four or eight chis requires: whole wooden skin can not have horizontal cutter seal when not having fast knot, no small holes caused by worms, no male and female face, no color differnece, no card rotary-cut, rotary-cut.The kind of wood skin is chosen Okoume.
Described overlaying is meant: the melamine-impregnated bond paper is lain in a horizontal plane on the special-shaped wooden skin, put into press afterwards, compacting.
Described compacting is specially: the temperature of press bolster is 150 ℃, and pressure is 22Pa, and the dwell time is 3 minutes.
Described press is single drylight presses.
Step 4, the wooden skin of melamine-impregnated bond paper paste is pasted respectively on two faces of middle base material, level is put into the multidaylight press of stainless steel bound edge, gauge tap by multidaylight press is the steel plate of closed multidaylight press simultaneously, temperature is transferred to 120 ℃, the pressure of multidaylight press is transferred to 14 Pa, and the dwell time is 4 minutes, gets ecological plate.
The wooden skin thickness of described abnormity requires about 80S, and the standard of size four or eight chis requires: whole wooden skin can not have horizontal cutter seal when not having fast knot, no small holes caused by worms, no male and female face, no color differnece, no card rotary-cut, rotary-cut.The kind of wood skin is chosen dammara.
Described overlaying is meant: the melamine-impregnated bond paper is lain in a horizontal plane on the special-shaped wooden skin, put into press afterwards, compacting.
Described compacting is specially: the temperature of press bolster is 180 ℃, and pressure is 20Pa, and the dwell time is 1 minute.
Described press is a multidaylight press.
Step 4, the wooden skin of melamine-impregnated bond paper paste is pasted respectively on two faces of middle base material, level is put into the press of stainless steel bound edge, gauge tap by press is the steel plate of closed press simultaneously, temperature is transferred to 120 ℃, the pressure of press is transferred to 15 Pa, and the dwell time is 2 minutes, gets ecological plate.
The wooden skin thickness of described abnormity requires about 70S, and the standard of size four or eight chis requires: whole wooden skin can not have horizontal cutter seal when not having fast knot, no small holes caused by worms, no male and female face, no color differnece, no card rotary-cut, rotary-cut.The kind of wood skin is chosen poplar.
Described overlaying is meant: the melamine-impregnated bond paper is lain in a horizontal plane on the special-shaped wooden skin, put into press afterwards, compacting.
Described compacting is specially: the temperature of press bolster is 170 ℃, and pressure is 25Pa, and the dwell time is 2 minutes.
Described press is a multidaylight press.
Step 4, the wooden skin of melamine-impregnated bond paper paste is pasted respectively on two faces of middle base material, level is put into the multidaylight press of stainless steel bound edge, gauge tap by multidaylight press is the steel plate of closed multidaylight press simultaneously, temperature is transferred to 120 ℃, the pressure of multidaylight press is transferred to 12 Pa, and the dwell time is 5 minutes, gets ecological plate.
The prepared ecological plate structure of the foregoing description as shown in the figure, 1 is the melamine-impregnated bond paper among the figure, 2 is special-shaped wooden skin, 3 is middle base material.The present invention utilizes the woodgrained paper of printing to replace natural wooden facing as sheet material, greatly reduces the use amount of timber, has saved non-renewable resources; Behind the plate surface process melamine impregnation, can replace paint, save cost of processing greatly, the time of processing also shortens greatly, and environmental-protecting performance is the production method of ultra-traditional far away also; The ecological plate surface abrasion resistance of preparation is very good, anti-zoned property, anti-pollution, anti-flammability, and pattern expression aspect fashion can satisfy different consumer demands simultaneously.The present invention goes for a large amount of productions.
Below only be the detailed description that preferred embodiment of the present invention is carried out, but the present invention is not limited to above embodiment.It should be understood that under the spirit and scope situation of the claim that does not break away from the application, the various modifications that those skilled in the art makes still belong to scope of the present invention.
Claims (8)
1. the preparation method of an ecological plate is characterized in that, comprises the steps:
Step 1, preparation melamine-impregnated bond paper increases by 15～20% with spread than conventional formulation in preparation process, and promptly the content of melamine transfers to 70～100%, and the spread ratio of three ammonia reaches 145～160%, and volatile content transfers to 5.0～6.5;
Step 2, with the melamine-impregnated bond paper paste on the wooden skin of abnormity;
Step 3, base material in the middle of the preparation;
Step 4 is pasted the wooden skin of melamine-impregnated bond paper paste respectively on two faces of middle base material, compacting, and heating gets ecological plate.
2. the preparation method of ecological plate according to claim 1 is characterized in that, described overlaying is meant: the melamine-impregnated bond paper is lain in a horizontal plane on the special-shaped wooden skin, put into press afterwards and suppress.
3. the preparation method of ecological plate according to claim 2 is characterized in that, described compacting is specially: the temperature of press bolster is 150～180 ℃, and pressure is 20～25Pa, and the dwell time is 1～3 minute.
4. the preparation method of ecological plate according to claim 1 and 2 is characterized in that, the wooden skin thickness of described abnormity is 60～80S, the standard of size four or eight chis.
5. the preparation method of ecological plate according to claim 1 is characterized in that, described middle base material is wooden central layer.
6. the preparation method of ecological plate according to claim 5 is characterized in that, described wooden central layer is circuit board, lumber core or multi-layer sheet.
7. the preparation method of ecological plate according to claim 1, it is characterized in that, described step 4 is specially: the wooden skin of melamine-impregnated bond paper paste is pasted respectively on two faces of middle base material, level is put into the press of stainless steel bound edge, gauge tap by press is the steel plate of closed press simultaneously, and temperature is transferred to 120 ℃, and the pressure of press is transferred to 12～15 Pa, dwell time is 2～5 minutes, and then prepares ecological plate.
8. according to the preparation method of claim 2 or 3 or 7 described ecological plates, it is characterized in that described press is single drylight presses or multidaylight press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101018634A CN102198675A (en) | 2011-04-22 | 2011-04-22 | Preparation method of ecological plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101018634A CN102198675A (en) | 2011-04-22 | 2011-04-22 | Preparation method of ecological plate |
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| Publication Number | Publication Date |
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| CN102198675A true CN102198675A (en) | 2011-09-28 |
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| CN2011101018634A Pending CN102198675A (en) | 2011-04-22 | 2011-04-22 | Preparation method of ecological plate |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642221A (en) * | 2012-04-26 | 2012-08-22 | 武汉双龙木业发展有限责任公司 | Paint-free ecological plywood made of poplar base materials and production process for paint-free ecological plywood |
| CN103056932A (en) * | 2012-12-25 | 2013-04-24 | 广东耀东华家具板材有限公司 | Method for manufacturing reconstituted decorative artificial board |
| CN103128804A (en) * | 2013-02-26 | 2013-06-05 | 江苏福庆木业有限公司 | Manufacturing method of melamine ecological plate |
| CN103252948A (en) * | 2012-11-05 | 2013-08-21 | 广东正美家具科技有限公司 | Preparation method of high performance composite sheet material and high performance composite sheet material |
| CN104260160A (en) * | 2014-09-18 | 2015-01-07 | 湖南德易森环保科技有限公司 | Melamine ecological board with core board divided into three boards in place of middle board and manufacturing process |
| CN105397875A (en) * | 2015-10-28 | 2016-03-16 | 贵州恒贵木业有限公司 | Processing method for ecological plate |
| CN105479553A (en) * | 2015-11-30 | 2016-04-13 | 桃江县湘益木业有限责任公司 | Ecological board and production technological method thereof |
| CN106121075A (en) * | 2016-08-28 | 2016-11-16 | 桂林新艺制冷设备有限责任公司 | A kind of fireproof wood block |
| CN106217508A (en) * | 2016-08-30 | 2016-12-14 | 昆明振楚工贸有限公司 | A kind of processing method of Surface decorated woodbased panels with paper impregnated thermosetting resins |
| CN106378852A (en) * | 2016-08-30 | 2017-02-08 | 昆明振楚工贸有限公司 | Impregnated film adhesive surface-decorated artificial board and production process thereof |
| CN109016041A (en) * | 2011-08-26 | 2018-12-18 | 塞拉洛克创新股份有限公司 | Plate coating |
| CN109551576A (en) * | 2018-12-13 | 2019-04-02 | 柳州市荣森新型材料科技有限公司 | A kind of wear-resistant impregnated bond paper facing ecological board and preparation method thereof |
| CN112045794A (en) * | 2020-08-31 | 2020-12-08 | 朱镇金 | Application of copy paper in building template manufacturing |
| CN119773005A (en) * | 2024-12-25 | 2025-04-08 | 德华兔宝宝装饰新材股份有限公司 | A method for manufacturing flame-retardant ecological board |
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2011
- 2011-04-22 CN CN2011101018634A patent/CN102198675A/en active Pending
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| CN102642221A (en) * | 2012-04-26 | 2012-08-22 | 武汉双龙木业发展有限责任公司 | Paint-free ecological plywood made of poplar base materials and production process for paint-free ecological plywood |
| CN103252948B (en) * | 2012-11-05 | 2016-04-27 | 广东正美家具科技有限公司 | High-performance composite board and preparation method thereof |
| CN103252948A (en) * | 2012-11-05 | 2013-08-21 | 广东正美家具科技有限公司 | Preparation method of high performance composite sheet material and high performance composite sheet material |
| CN103056932B (en) * | 2012-12-25 | 2014-12-10 | 广东耀东华家具板材有限公司 | Method for manufacturing reconstituted decorative artificial board |
| CN103056932A (en) * | 2012-12-25 | 2013-04-24 | 广东耀东华家具板材有限公司 | Method for manufacturing reconstituted decorative artificial board |
| CN103128804A (en) * | 2013-02-26 | 2013-06-05 | 江苏福庆木业有限公司 | Manufacturing method of melamine ecological plate |
| CN104260160B (en) * | 2014-09-18 | 2017-01-11 | 湖南德易森环保科技有限公司 | Melamine ecological board with core board divided into three boards in place of middle board and manufacturing process |
| CN104260160A (en) * | 2014-09-18 | 2015-01-07 | 湖南德易森环保科技有限公司 | Melamine ecological board with core board divided into three boards in place of middle board and manufacturing process |
| CN105397875A (en) * | 2015-10-28 | 2016-03-16 | 贵州恒贵木业有限公司 | Processing method for ecological plate |
| CN105479553A (en) * | 2015-11-30 | 2016-04-13 | 桃江县湘益木业有限责任公司 | Ecological board and production technological method thereof |
| CN106121075A (en) * | 2016-08-28 | 2016-11-16 | 桂林新艺制冷设备有限责任公司 | A kind of fireproof wood block |
| CN106217508A (en) * | 2016-08-30 | 2016-12-14 | 昆明振楚工贸有限公司 | A kind of processing method of Surface decorated woodbased panels with paper impregnated thermosetting resins |
| CN106378852A (en) * | 2016-08-30 | 2017-02-08 | 昆明振楚工贸有限公司 | Impregnated film adhesive surface-decorated artificial board and production process thereof |
| CN109551576A (en) * | 2018-12-13 | 2019-04-02 | 柳州市荣森新型材料科技有限公司 | A kind of wear-resistant impregnated bond paper facing ecological board and preparation method thereof |
| CN112045794A (en) * | 2020-08-31 | 2020-12-08 | 朱镇金 | Application of copy paper in building template manufacturing |
| CN112045794B (en) * | 2020-08-31 | 2022-02-25 | 朱镇金 | Application of copy paper in building template manufacturing |
| CN119773005A (en) * | 2024-12-25 | 2025-04-08 | 德华兔宝宝装饰新材股份有限公司 | A method for manufacturing flame-retardant ecological board |
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Application publication date: 20110928 |