CN105196367A - Production technology of water-based zero-formaldehyde multiply plywood - Google Patents
Production technology of water-based zero-formaldehyde multiply plywood Download PDFInfo
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- CN105196367A CN105196367A CN201510538136.2A CN201510538136A CN105196367A CN 105196367 A CN105196367 A CN 105196367A CN 201510538136 A CN201510538136 A CN 201510538136A CN 105196367 A CN105196367 A CN 105196367A
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Abstract
The invention discloses a production technology of a water-based zero-formaldehyde multiply plywood. The production technology of the water-based zero-formaldehyde multiply plywood is essentially different from that of urea-formaldehyde glue and phenolic glue, intercooling and hot pressing time and pressures in processes from panel screening to follow-up panel manufacturing are respectively different in different degrees, and the production technology of the water-based zero-formaldehyde multiply plywood mainly comprises the following steps: selecting veneers, gluing veneers, laying up, carrying out cold pressing, carrying out hot pressing, releasing pressure in sections, sanding according to determined thickness, gluing and veneering, placing, veneering and carrying out cold pressing, veneering and carrying out hot pressing, trimming edge, sanding, and obtaining the water-based zero-formaldehyde multiply plywood finished product. The pressure is released in sections, a slab can be prevented from being bubbled, and uniform gluing can be controlled by adopting a threaded roller coating manner. The production technology of the water-based zero-formaldehyde multiply plywood is simple, the veneers are flexible and hardly warp or deform, no harmful substance such as formaldehyde is released in a production process, physical health of first-line operators is guaranteed, and demand of people on green building materials and costly furniture for home decoration can be met.
Description
Technical field
The present invention relates to plywood production field, specifically a kind of production technology of aqueous formaldehyde multi-plywood.
Background technology
Glued board is a kind of wood-based plate that furniture is conventional, be peeled into veneer by juggle or become veneer by flitch slicing, stick with glue three layers of agent gummed or the board-like material of multilayer again, usually use odd-level veneer, and the orthogonal gummed of the machine direction of adjacent layer veneer is formed.Glued board can improve timber utilization rate, is the main path saving timber, can be applicable to the fields such as aircraft, boats and ships, train, automobile, building and packing case.
In plywood production, almost each procedure is all affecting glued board bonding quality in varying degrees, always having three aspects needs emphasis to consider: be adhesive quality on the one hand, adhesive requires stable performance, there are enough bonding strengths, resin content and viscosity are suitable for, and have sufficiently long active phase guarantee normal operating and goods indices to meet the requirements.Be on the other hand Veneer quality, control Veneer moisture and flatness well, control peeling condition simultaneously and make veneer indices be in optimum value.Because aqueous adhesive is medium with water, to the water content requirement of sheet material apparently higher than three-aldehyde glue, at postorder hot pressing moisture evaporation, ensure that finished product sheet material moisture content is in acceptability limit.The third aspect is glued board gummed, and needed to be grasped resin added and parked two links, glue amount is too much, blocked up or very few, all can affect board quality and production cost; Storage period will make reasonable change with climate change.
With regard to existing market situation, the production of glued board is still based on three-aldehyde glue, and not only burst size of methanal exceeds standard phenomenon relatively seriously, and production equipment is simple, operation imperfection, cause that product variety is few, of poor quality, operation is discontinuous, the demand of city's field alignment top-grade furniture sheet material can not be met.
summary of the inventionthe object of this invention is to provide a kind of production technology of aqueous formaldehyde multi-plywood, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A production technology for aqueous formaldehyde multi-plywood, is characterized in that: comprise the following steps successively:
(1) select plate: screening assembly sheet material, require that sheet material moisture content is on average less than 11%, maximum point may not exceed 13%;
(2) single plate double side gluing: coat aqueous formaldehyde adhesive KTC829C-1, glue-spread 300-330g/ ㎡ on the sheet material wood skin chosen, calculate by actual coverage, necessary gluing is even; (3) assembly: undertaken joining base by certain way and thickness;
(4) cold pressing: the slab prepared 400T press of colding pressing is done cold moudling process, and pressure of colding pressing is 16-18MPa, and the time of colding pressing is 3-4h, in cold pressure procedure, the corner of slab must be put neatly up and down, and the time of colding pressing is short, good forming effect;
(5) hot pressing: the lamella core after colding pressing is carried out drying and processing by hot press, hot pressing temperature is 105-115 DEG C, and hot pressing pressure is 15-17MPa, and hot pressing time is (t+5) min, t is slab thickness mm;
(6) segmentation release: point three sections of releases, first paragraph Pressure Drop is to 7-9MPa, stop 5-8min, second time Pressure Drop, to 5-8MPa, stops 3-5min, third time, Pressure Drop was to 0MPa, stop 2min, step-down stops object is repeatedly to better be discharged by moisture in sheet material, making slab moisture on average be no more than 12%, if sheet material moisture is greater than 12%, to declines after secondary release and again pressurize;
(7) fixed thick sanding: the slab contact calibrating machine pressed sands flat, and makes the smooth consistency of thickness of slab, and plate face is easy to decoration;
(8) gluing veneer: carry out double spread at the above-mentioned slab sand flat, glue-spread 280-300g/ ㎡, by slab areal calculation, gluing must be evenly; Require to select suitable panel according to sheet material, plate thickness is not less than 0.2mm, and panel moisture content is not higher than 16%, and veneer slab will be put neatly;
(9) park: when aqueous formaldehyde adhesive KTC829C-1 is used for glued board veneer, 30-50min can be parked and allow sheet material absorb moisture in adhesive, panel seep through can be prevented;
(10) veneer is colded pressing: adopt 400T press of colding pressing to cold pressing to the glued board after veneer gluing, pressure of colding pressing is 10-12MPa, and the time of colding pressing is 30-50min;
(11) veneer hot pressing: the veneered plywood after colding pressing is carried out hot pressing by hot press, hot pressing temperature is 105-115 DEG C, hot pressing pressure is 12-13MPa, hot pressing time is 2-3min, during release, Pressure Drop is to 0MPa, stop 2min, multi-plywood needs cooling to get rid of moisture after drawing off forcing press, production board water content is no more than 14%;
(12) limit is sawed: burr removing is cut out in the requirement according to different size;
(13) sanding: carry out polishing with the fine sand band of more than 320#, makes the smooth facing that is easy in plate face process.
The production technology of described a kind of aqueous formaldehyde multi-plywood, is characterized in that: described gluing mode is screw thread roll coating model, can select thread roller cylinder glue spreader.
The production technology of described a kind of aqueous formaldehyde multi-plywood, it is characterized in that: in described step (5), sheet material before hot pressing will be repaired, unnecessary lap is sliced off, gap, hole can be filled up with formaldehydeless putty, the slab fixed can have been pressed in 20h, all can not affect sheet material bonding strength.
Advantage of the present invention:
(1) aqueous formaldehyde adhesive discharges without any poisonous and harmful substance in production and use procedure, ensures that a line operating personnel's is healthy, meets the demand of green building material that people decorate to household and top-grade furniture.
(2) adopt the applying glue of screw thread roll coating model, gluing is even, and be beneficial to glue and infiltrate, cost is low.
(3) segmentation release during slab hot pressing, can prevent slab from bubbling.
(4) veneer parks a period of time before colding pressing, and can prevent panel seep through.
(5) finished product sheet material is soft, not easily buckling deformation.
Detailed description of the invention
A production technology for aqueous formaldehyde multi-plywood, comprises the following steps successively:
(1) select plate: screening assembly sheet material, require that sheet material moisture content is on average less than 11%, maximum point may not exceed 13%;
(2) single plate double side gluing: coat aqueous formaldehyde adhesive KTC829C-1, glue-spread 300-330g/ ㎡ on the sheet material wood skin chosen, calculate by actual coverage, necessary gluing is even; (3) assembly: undertaken joining base by certain way and thickness;
(4) cold pressing: the slab prepared 400T press of colding pressing is done cold moudling process, and pressure of colding pressing is 16-18MPa, and the time of colding pressing is 3-4h, in cold pressure procedure, the corner of slab must be put neatly up and down, and the time of colding pressing is short, good forming effect;
(5) hot pressing: the lamella core after colding pressing is carried out drying and processing by hot press, hot pressing temperature is 105-115 DEG C, and hot pressing pressure is 15-17MPa, and hot pressing time is (t+5) min, t is slab thickness mm;
(6) segmentation release: point three sections of releases, first paragraph Pressure Drop is to 7-9MPa, stop 5-8min, second time Pressure Drop, to 5-8MPa, stops 3-5min, third time, Pressure Drop was to 0MPa, stop 2min, step-down stops object is repeatedly to better be discharged by moisture in sheet material, making slab moisture on average be no more than 12%, if sheet material moisture is greater than 12%, to declines after secondary release and again pressurize;
(7) fixed thick sanding: the slab contact calibrating machine pressed sands flat, and makes the smooth consistency of thickness of slab, and plate face is easy to decoration;
(8) gluing veneer: carry out double spread at the above-mentioned slab sand flat, glue-spread 280-300g/ ㎡, by slab areal calculation, gluing must be evenly; Require to select suitable panel according to sheet material, plate thickness is not less than 0.2mm, and panel moisture content is not higher than 16%, and veneer slab will be put neatly;
(9) park: when aqueous formaldehyde adhesive KTC829C-1 is used for glued board veneer, 30-50min can be parked and allow sheet material absorb moisture in adhesive, panel seep through can be prevented;
(10) veneer is colded pressing: adopt 400T press of colding pressing to cold pressing to the glued board after veneer gluing, pressure of colding pressing is 10-12MPa, and the time of colding pressing is 30-50min;
(11) veneer hot pressing: the veneered plywood after colding pressing is carried out hot pressing by hot press, hot pressing temperature is 105-115 DEG C, hot pressing pressure is 12-13MPa, hot pressing time is 2-3min, during release, Pressure Drop is to 0MPa, stop 2min, multi-plywood needs cooling to get rid of moisture after drawing off forcing press, production board water content is no more than 14%;
(12) limit is sawed: burr removing is cut out in the requirement according to different size;
(13) sanding: carry out polishing with the fine sand band of more than 320#, makes the smooth facing that is easy in plate face process.
Gluing mode is screw thread roll coating model, can select thread roller cylinder glue spreader.
In step (5), the sheet material before hot pressing will be repaired, and unnecessary lap is sliced off, and gap, hole can be filled up with formaldehydeless putty, and the slab fixed can have been pressed in 20h, all can not affect sheet material bonding strength.
Claims (3)
1. a production technology for aqueous formaldehyde multi-plywood, is characterized in that: comprise the following steps successively:
(1) select plate: screening assembly sheet material, require that sheet material moisture content is on average less than 11%, maximum point may not exceed 13%;
(2) single plate double side gluing: coat aqueous formaldehyde adhesive KTC829C-1, glue-spread 300-330g/ ㎡ on the sheet material wood skin chosen, calculate by actual coverage, necessary gluing is even; (3) assembly: undertaken joining base by certain way and thickness;
(4) cold pressing: the slab prepared 400T press of colding pressing is done cold moudling process, and pressure of colding pressing is 16-18MPa, and the time of colding pressing is 3-4h, in cold pressure procedure, the corner of slab must be put neatly up and down, and the time of colding pressing is short, good forming effect;
(5) hot pressing: the lamella core after colding pressing is carried out drying and processing by hot press, hot pressing temperature is 105-115 DEG C, and hot pressing pressure is 15-17MPa, and hot pressing time is (t+5) min, t is slab thickness mm;
(6) segmentation release: point three sections of releases, first paragraph Pressure Drop is to 7-9MPa, stop 5-8min, second time Pressure Drop, to 5-8MPa, stops 3-5min, third time, Pressure Drop was to 0MPa, stop 2min, step-down stops object is repeatedly to better be discharged by moisture in sheet material, making slab moisture on average be no more than 12%, if sheet material moisture is greater than 12%, to declines after secondary release and again pressurize;
(7) fixed thick sanding: the slab contact calibrating machine pressed sands flat, and makes the smooth consistency of thickness of slab, and plate face is easy to decoration;
(8) gluing veneer: carry out double spread at the above-mentioned slab sand flat, glue-spread 280-300g/ ㎡, by slab areal calculation, gluing must be evenly; Require to select suitable panel according to sheet material, plate thickness is not less than 0.2mm, and panel moisture content is not higher than 16%, and veneer slab will be put neatly;
(9) park: when aqueous formaldehyde adhesive KTC829C-1 is used for glued board veneer, 30-50min can be parked and allow sheet material absorb moisture in adhesive, panel seep through can be prevented;
(10) veneer is colded pressing: adopt 400T press of colding pressing to cold pressing to the glued board after veneer gluing, pressure of colding pressing is 10-12MPa, and the time of colding pressing is 30-50min;
(11) veneer hot pressing: the veneered plywood after colding pressing is carried out hot pressing by hot press, hot pressing temperature is 105-115 DEG C, hot pressing pressure is 12-13MPa, hot pressing time is 2-3min, during release, Pressure Drop is to 0MPa, stop 2min, multi-plywood needs cooling to get rid of moisture after drawing off forcing press, production board water content is no more than 14%;
(12) limit is sawed: burr removing is cut out in the requirement according to different size;
(13) sanding: carry out polishing with the fine sand band of more than 320#, makes the smooth facing that is easy in plate face process.
2. the production technology of a kind of aqueous formaldehyde multi-plywood according to claim 1, is characterized in that: described gluing mode is screw thread roll coating model, can select thread roller cylinder glue spreader.
3. the production technology of a kind of aqueous formaldehyde multi-plywood according to claim 1, it is characterized in that: in described step (5), sheet material before hot pressing will be repaired, unnecessary lap is sliced off, gap, hole can be filled up with formaldehydeless putty, the slab fixed can have been pressed in 20h, all can not affect sheet material bonding strength.
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| CN105965616A (en) * | 2016-02-03 | 2016-09-28 | 宁波中加低碳新技术研究院有限公司 | Method for manufacturing single substrate composite sheet material |
| CN106827106A (en) * | 2016-12-21 | 2017-06-13 | 兰州科天环保节能科技有限公司 | Aqueous banksia rose plate of zero Form aldehyde release and preparation method thereof |
| CN106945137A (en) * | 2017-05-02 | 2017-07-14 | 安徽省阜阳市庆霖木业有限责任公司 | A kind of production technology of formaldehydeless multi-plywood |
| CN107186833A (en) * | 2017-06-29 | 2017-09-22 | 兰州科天水性科技有限公司 | A kind of aqueous Wood Veneer Overlaying without the fire retardant glued board of aldehyde |
| CN107309983A (en) * | 2017-07-13 | 2017-11-03 | 兰州科天水性科技有限公司 | A kind of LVL layers of collection sheet material of zero Form aldehyde release water-borne polyurethane bond and its manufacture method |
| CN107599094A (en) * | 2017-09-20 | 2018-01-19 | 阜南县星光工艺品有限公司 | A kind of heat pressing process of cottonwood plank stuff |
| CN108081405A (en) * | 2017-11-24 | 2018-05-29 | 南宁科天水性科技有限责任公司 | A kind of hot pressing humidity discharging method of glued board and core-board |
| CN108145807A (en) * | 2017-12-18 | 2018-06-12 | 重庆仁实商贸有限公司 | Preparation method of sandwich plate |
| CN108973273A (en) * | 2018-07-25 | 2018-12-11 | 南宁科天水性科技有限责任公司 | A kind of no aldehyde addition, resistance to cracking, the moisture-proof wood-plastic board and its preparation process for exempting from paint |
| CN109016040A (en) * | 2018-07-26 | 2018-12-18 | 沭阳县金森源木业有限公司 | Solid wood thickness core floor and its production method |
| CN109648676A (en) * | 2019-03-01 | 2019-04-19 | 太和县金鑫木业有限公司 | A kind of processing method of glued board |
| CN109648660A (en) * | 2019-03-01 | 2019-04-19 | 太和县金鑫木业有限公司 | A kind of plywood hot-pressing method |
| CN109676737A (en) * | 2018-12-14 | 2019-04-26 | 沭阳县金森源木业有限公司 | A kind of production method of solid wood thickness core plate |
| CN110154194A (en) * | 2019-06-03 | 2019-08-23 | 江苏七巧工艺木制品股份有限公司 | Without the fire-retardant timber manufacturing method of urea formaldehyde dipping decorative paper veneer MULTILAYER COMPOSITE |
| CN110216749A (en) * | 2019-06-26 | 2019-09-10 | 广西金兔装饰材料有限公司 | The aqueous no aldehyde decoration panel of one kind and its production technology |
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| CN105965616B (en) * | 2016-02-03 | 2019-04-23 | 宁波中加低碳新技术研究院有限公司 | The manufacturing method of veneer base composite board |
| CN105965616A (en) * | 2016-02-03 | 2016-09-28 | 宁波中加低碳新技术研究院有限公司 | Method for manufacturing single substrate composite sheet material |
| CN106827106A (en) * | 2016-12-21 | 2017-06-13 | 兰州科天环保节能科技有限公司 | Aqueous banksia rose plate of zero Form aldehyde release and preparation method thereof |
| CN106945137A (en) * | 2017-05-02 | 2017-07-14 | 安徽省阜阳市庆霖木业有限责任公司 | A kind of production technology of formaldehydeless multi-plywood |
| CN107186833A (en) * | 2017-06-29 | 2017-09-22 | 兰州科天水性科技有限公司 | A kind of aqueous Wood Veneer Overlaying without the fire retardant glued board of aldehyde |
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| CN108081405A (en) * | 2017-11-24 | 2018-05-29 | 南宁科天水性科技有限责任公司 | A kind of hot pressing humidity discharging method of glued board and core-board |
| CN108145807A (en) * | 2017-12-18 | 2018-06-12 | 重庆仁实商贸有限公司 | Preparation method of sandwich plate |
| CN108973273A (en) * | 2018-07-25 | 2018-12-11 | 南宁科天水性科技有限责任公司 | A kind of no aldehyde addition, resistance to cracking, the moisture-proof wood-plastic board and its preparation process for exempting from paint |
| CN109016040A (en) * | 2018-07-26 | 2018-12-18 | 沭阳县金森源木业有限公司 | Solid wood thickness core floor and its production method |
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| CN110154194A (en) * | 2019-06-03 | 2019-08-23 | 江苏七巧工艺木制品股份有限公司 | Without the fire-retardant timber manufacturing method of urea formaldehyde dipping decorative paper veneer MULTILAYER COMPOSITE |
| CN110216749A (en) * | 2019-06-26 | 2019-09-10 | 广西金兔装饰材料有限公司 | The aqueous no aldehyde decoration panel of one kind and its production technology |
| CN110216749B (en) * | 2019-06-26 | 2021-12-14 | 广西金兔装饰材料有限公司 | Water-based formaldehyde-free decorative panel and production process thereof |
| CN110666902A (en) * | 2019-10-09 | 2020-01-10 | 广东嘉骏森林股份有限公司 | Production process of bendable furniture board |
| CN111319102A (en) * | 2020-02-28 | 2020-06-23 | 北京林业大学 | Plywood and hot pressing method thereof |
| CN111593601A (en) * | 2020-04-20 | 2020-08-28 | 广东耀东华装饰材料科技有限公司 | Production method of mirror surface decorative plate |
| CN111593601B (en) * | 2020-04-20 | 2022-06-21 | 广东耀东华装饰材料科技有限公司 | Method for producing mirror surface decorative plate |
| CN112873445A (en) * | 2021-01-21 | 2021-06-01 | 肖华静 | Hot-pressing production process of artificial plywood |
| CN112873445B (en) * | 2021-01-21 | 2022-08-12 | 肖华静 | Hot-pressing production process of artificial plywood |
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Effective date of registration: 20160720 Address after: 230601, Anhui City, Hefei Province peach blossom Industrial Park Road, west of bustling Avenue Applicant after: Hefei Scisky Technology Co., Ltd. Applicant after: Lanzhou Ke Tian environmental protection and energy saving Science and Technology Ltd. Applicant after: Hefei Scisky Technology Co., Ltd. Address before: 230601, Anhui Hefei economic and Technological Development Zone peach blossom Industrial Park bustling Avenue West Applicant before: Hefei Ketian Chemical Co., Ltd. |
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Application publication date: 20151230 |