CN102877641A - Production method for durable plastic surface waterproof building template - Google Patents
Production method for durable plastic surface waterproof building template Download PDFInfo
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- CN102877641A CN102877641A CN2012103543706A CN201210354370A CN102877641A CN 102877641 A CN102877641 A CN 102877641A CN 2012103543706 A CN2012103543706 A CN 2012103543706A CN 201210354370 A CN201210354370 A CN 201210354370A CN 102877641 A CN102877641 A CN 102877641A
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Abstract
The invention relates to a production method for a durable plastic surface waterproof building template and belongs to the technical field of plastic wood composite building templates. The method comprises the steps of rolling holes on a base plate, preheating and dehumidifying, extruding and coating plastic, rolling and compounding, cooling and solidifying, and cutting and forming. After the base plate is subjected to hole rolling and preheating, hot-melt plastic is directly extruded onto the surface of the base plate by an extruding machine, the plastic coated surface is subjected to rolling and compounding by a pressing roller, and the plastic surface and the base plate are formed through rolling at one step, so that the production process is simple and high in efficiency. The surface and the base plate are intersected transversely and longitudinally and connected firmly, so that delamination and cracking are avoided, the service life is long and the quality of the template is high.
Description
Technical field
The invention belongs to the plastic-wood building formwork technical field, specifically relate to a kind of production method of moulding wooden complex architectural template.
Background technology
Construction formwork is as the important construction tool of concrete structure engineering, and the fine or not direct relation of its quality quality, cost and the benefit of engineering construction.According to statistics, in Cast-in-situ Concrete Structural Engineering, form work engineering generally accounts for 20%～30% of concrete structure engineering cost, accounts for 30%～40% of the engineering amount of labour used.Along with the fast development of China real estate industry, the consumption of construction formwork increases year by year, estimates 2012, and China's construction formwork industry output will reach about 2.2 hundred million square metres.The existing construction formwork that uses mainly contains steel template, wood plywood template and bamboo plywood form.Steel form making and working service cost are high, and burden for users is heavy.And that the wooden templates such as wood plywood template and bamboo plywood form exist lumber consumption is a large amount of, moistureproof, acid-alkali-corrosive-resisting poor performance, easy cracking, the shortcoming such as application life is short.Along with the year by year minimizing of China's timber resources, improve the quality of wooden template, increase reusable number of times, the application life that prolongs template is imperative, also is current economizing on resources, and alleviates the inevitable choice of the cost of building trade.
The construction formwork that Wood plastic composite is made has the double grading of timber and plastics concurrently as the new generation of green construction formwork.It is comprised of wooden plywood and plastics surface layer, and by the building masterplate that plastics surface layer and wooden substrate face face join and form, its surface layer is combined defective tightness with substrate, be easy to after the use generating plane pull-up from problem.The problem that breaks away from for solving surface layer and core formed of wood, the agent that sticks with glue first that has bonds to the plastics lamella on the veneer, carries out hot pressing compound again.The template of processing and fabricating in this way, plastics surface layer and core formed of wood bond strength increase to some extent, but top layer and substrate or the face face joins, and template is used a period of time, after the sandwich layer suction, its adhesive layer adhesive strength diminishes, and the problem of surface layer cracking also easily occurs after this template is used, general no more than 30 times of the number of times of its Reusability.And aborning, plastics surface layer and wooden substrate need to make respectively, and secondary is compound, complex procedures, and production efficiency is low.Surface layer and substrate compound tense need be used a large amount of bonding adhesive, the volatilization contaminated environment of easily being heated of hazardous substances wherein.
The patent No. is that 200810244448.2 Chinese patent discloses a kind of " production method of wood plastic building mould ", and the method also comprises the making of surface layer material and surface layer material and wooden boards crimping two steps that are shaped.The problem that it comes unstuck for solving surface layer is provided with a lining between surface layer and flaggy, and at lining coated on both sides PUR.This method also exists complex procedures, and working (machining) efficiency is low, the shortcoming that cost of production is high.Though be provided with the materials such as nonwoven, cotton, burlap between surface layer and layer of wood, two interlayers still join for the face face, bond strength is inadequate; And lining exists the problem of suction, easily causes behind the Reusability coming unglued or delamination, and application life is short.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of long service life, once-combined shaping, and production efficiency is high, the plastic-wood building formwork production method of cleanliness without any pollution.
For solving the problems of the technologies described above, the present invention includes following steps:
1) substrate rolls the cave: on the substrate two sides by certain density respectively ecto-entad roll the thorn depression;
2) preheating dehumidifying: the substrate surface that rolls behind the cave is toasted, the substrate skin temperature is raise rapidly, dispel the shallow top layer of substrate moisture;
3) extrude to cover and mould: utilize the plastic extruder extrusioning thermoplastic plastic, molten plastic is overlying on substrate surface after the preheating;
4) roll-in is compound: utilize pressure roller to mould the surface and carry out roll-in covering, the partial melting plastics are clamp-oned in the depression, make surface and the depression inwall close proximity of plastics surface layer bottom and substrate, plastics surface layer external surface is smooth;
5) cooling curing: the sheet material after compound to roll-in cools off;
6) cut shaping: cut by specification cooling off rear sheet material.
Preferably the degree of depth of described depression is 1 to 4 millimeter, and depression evenly distributes on the plate face, and its adjacent depression Edge Distance is 5 to 25 millimeters; The plate surface temperature is 100 to 320 degree behind the basal plate preheating.
Further preferably described substrate adopts multi-plywood, and pocket depth is 1.5 to 2 millimeters; Its plate surface temperature is 180 to 220 degree behind the basal plate preheating; Described thermoplastic is one or more the mixed plastic in polyethylene, polypropylene, the polyvinyl chloride, also is added with filler for plastic in the surface layer.
The present invention directly is expressed into substrate surface by extruder with the heat molten type plastics, and is moulded the surface to carry out roll-in compound covering by pressure roller, and rolling formation of plastics surface layer and substrate, and the roll-in while extruding can uninterruptedly be produced continuously, and production efficiency is high.Substrate surface is provided with and rolls the depression that thorn forms, the many uneven thorn-like wood fibers of depression marginal existence.Hot melting plastic forms in plastics surface layer bottom on the one hand and stretches into the lower protruding of depression after depression is clamp-oned in roll-in, and it with spinous fiber parcel all in the depression wherein makes plastics surface layer bottom prick " root " in substrate simultaneously.Surface layer and substrate join horizontal and vertical formation is crosslinked, are connected firmly, and are difficult for delamination and cracking, and long service life is reusable more than 30 times under normal circumstances.Plastics surface layer and substrate directly join, and not only save material, and reduce production costs, and production technology are simple, and efficient is high, and the environment pollution that the bonding adhesive volatilization causes in also having avoided producing can realize cleaner production.Substrate is through heating and dehumidification, and its surface temperature raises fast, has removed the steam on substrate top layer, is conducive to plastics and is combined with the substrate layer of wood, the bubbling of also having avoided the moisture in the substrate to be heated and to volatilize and cause, and template quality is good.
The specific embodiment
Embodiment 1:
The present embodiment comprises the steps:
1) substrate rolls the cave: select 5 layers of wooden plywood wide 1.22 meters, long 2.44 meters, utilize roller thorn machine on the substrate two sides respectively ecto-entad roll the thorn depression, depression is the little uncovered shape of outer imperial palace, depression evenly distributes on the plate face, adjacent depression Edge Distance is 15 millimeters, and pocket depth is 1 millimeter.
2) preheating dehumidifying: utilize the infrared electric-heating device that the substrate surface that rolls behind the cave is toasted, make its surface temperature be increased to rapidly 100 degree, dispel the shallow top layer of substrate moisture.
3) extrude to cover and mould: the plastics surface layer adopts polyethylene, utilizes plastic extruder that it is expressed into substrate surface after the preheating, and its stand is distributed in substrate surface as far as possible.
4) roll-in is compound: the substrate limit is extruded to cover and is moulded, lateral dominance is moulded the surface and is carried out roll-in covering along substrate one end with pressure roller, make the partial melting plastics clamp-on fast in the depression, plastics surface layer bottom is connected closely with the formation of being connected with depression of the surface of substrate, the plastic layer smooth outer surface is smooth after the roll-in, and plastic layer is 0.5 millimeter.
5) cooling curing: the sheet material after utilizing blower fan compound to roll-in carries out the wind cooling.
6) cut shaping: use guillotine to carry out deburring by specification and cut cooling off rear sheet material.
The present embodiment adopts extrusion molding hot pressing One-step production to mould wooden composite shuttering, plastics surface layer bottom even is provided with the root shape projection that stretches in the substrate depression, root shape projection base portion is connected with the plastics surface layer, root shape projection periphery closely links to each other with substrate, plastics surface layer and substrate have been realized seamlessly directly joining, in conjunction with firmly closely.Substrate is moulded roll-in and can also be eliminated the concavo-convex problem of plate face of bringing because of the substrate injustice through covering, and total quality is good.Randomly draw the template of making of said method, directly apply to pouring concrete behind the gluing of side, detect after reusing 35 times, the phenomenon of the disengaging of plastics surface layer and substrate and surface layer bubbling do not occur.This template namely can be used for cast after completing, the template that existing bonding method is made has been saved the adhesive material congealing step, can shorten the resting period, saves production cost.
Embodiment 2:
The present embodiment comprises the steps:
1) substrate rolls the cave: select 7 layers of wooden plywood of wide 0.915 meter, long 1.83 meters, utilize roller thorn machine on the substrate two sides respectively ecto-entad roll the thorn depression, depression evenly distributes on the plate face, adjacent depression Edge Distance is 12 millimeters, the degree of depth is 1.5 millimeters.
2) preheating dehumidifying: utilize electric hot plate that the substrate surface that rolls behind the cave is toasted, make its surface temperature be increased to rapidly 180 degree, the shallow top layer of substrate moisture rapid evaporation.
3) extrude to cover and mould: the plastics surface layer adopts polypropylene, utilize plastic extruder that it is expressed into substrate surface after the preheating, and the stand is distributed in substrate surface.
4) roll-in is compound: the substrate limit is extruded to cover and is moulded, lateral dominance is moulded the surface and is carried out roll-in covering with pressure roller, and the partial melting plastics are clamp-oned in the depression fast, and the plastic layer bottom is connected closely with the formation of being connected with depression of the surface of substrate, the plastic layer external surface is smooth, and plastic layer is 0.2 millimeter.
5) cooling curing: the sheet material after utilizing blower fan compound to roll-in carries out the wind cooling.
6) cut shaping: use guillotine to carry out deburring by specification and cut cooling off rear sheet material.
Embodiment 3:
Production stage is identical with embodiment 1 in the present embodiment, and its difference is:
That substrate is selected is wide 1.22 meters, 9 layers of bamboo plywood of long 2.44 meters, and adjacent depression Edge Distance is 22 millimeters, and the degree of depth is 2 millimeters.During the preheating dehumidifying, substrate surface temperature is increased to rapidly 260 degree.The plastics surface layer adopts polyvinyl chloride, and adds the inserts such as a certain amount of wood powder or precipitated calcium carbonate.The plastic cover layer thickness is 0.5 millimeter.
Select the template of above-mentioned making to mould each one of the compound construction formwork of wood with the existing adhesive type that uses, put into water and carry out the poach experiment, after boiling continuously 11 hours, adhesive type is moulded wooden complex architectural template plastics surface layer edge and cracking and bubbling phenomenon are occurred, and the template plastic surface layer that adopts the present embodiment method to make is combined with substrate closely, bubbling also do not occur.
Embodiment 4:
Production stage is identical with embodiment 1 in the present embodiment, and its difference is:
That substrate is selected is wide 1.22 meters, 9 layers of bamboo plywood of long 2.44 meters, and adjacent depression Edge Distance is 25 millimeters, and the degree of depth is 3 millimeters.During the preheating dehumidifying, substrate surface temperature is increased to rapidly 280 degree.The plastics surface layer adopts polyethylene and polypropylene mixed plastic.
Embodiment 5:
Production stage is identical with embodiment 1 in the present embodiment, and its difference is:
That substrate is selected is wide 1.22 meters, 11 layers of bamboo plywood of long 2.44 meters, and the spacing of depression on the plate face is 5 millimeters, and the degree of depth is 4 millimeters.During the preheating dehumidifying, substrate surface temperature is increased to rapidly 320 degree.The plastics surface layer adopts the heat of mixing thermoplastic plastic of secondary recovery.
Substrate of the present invention can use wooden plywood, the bamboo plywood of different-thickness, and its depression density and the degree of depth are regulated at any time according to substrate thickness and requirement of strength, and depression is too close to be damaged the substrate top layer, affects formwork integral intensity; Depression is too sparse, and top layer and the substrate degree of cross linking are little, in conjunction with not firm.The shape of depression is also concerning the bond strength of plastics surface layer and substrate, its shape is the little uncovered shape of outer imperial palace, the lamina rara externa that its degree of depth just penetrates veneer is optimal selection, so protruding being deep into below the lamina rara externa of root of plastics surface layer bottom is with the interlayer bonding strength of several laminates in reinforcement plate surface.During the preheating dehumidifying, substrate heats through quick high-temp, and its surface temperature raises rapidly, is conducive to dispel substrate top layer moisture, and the temperature of heating can be adjusted with season at any time according to dried the wetting of substrate.Plastics surface layer materials are not the claimed contents of the present invention, and it can and adjust component prescription and additive from different places flexibly according to user's request, season.
Claims (3)
1. the production method of a Durable waterproof building template with plastic surface is characterized in that comprising the steps:
1) substrate rolls the cave: on the substrate two sides by certain density respectively ecto-entad roll the thorn depression;
2) preheating dehumidifying: the substrate surface that rolls behind the cave is toasted, the substrate skin temperature is raise rapidly, dispel the shallow top layer of substrate moisture;
3) extrude to cover and mould: utilize the plastic extruder extrusioning thermoplastic plastic, molten plastic is overlying on substrate surface after the preheating;
4) roll-in is compound: utilize pressure roller to mould the surface and carry out roll-in covering, the partial melting plastics are clamp-oned in the depression, make surface and the depression inwall close proximity of plastics surface layer bottom and substrate, plastics surface layer external surface is smooth;
5) cooling curing: the sheet material after compound to roll-in cools off;
6) cut shaping: cut by specification cooling off rear sheet material.
2. according to the production method of Durable waterproof building template with plastic surface claimed in claim 1, the degree of depth that it is characterized in that described depression is 1 to 4 millimeter, and depression evenly distributes on the plate face, and its adjacent depression Edge Distance is 5 to 25 millimeters; The plate surface temperature is 100 to 320 degree behind the basal plate preheating.
3. according to the production method of Durable waterproof building template with plastic surface claimed in claim 2, it is characterized in that described substrate adopts multi-plywood, pocket depth is 1.5 to 2 millimeters; Its plate surface temperature is 180 to 220 degree behind the basal plate preheating; Described thermoplastic is one or more the mixed plastic in polyethylene, polypropylene, the polyvinyl chloride, also is added with filler for plastic in the surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210354370.6A CN102877641B (en) | 2012-09-22 | 2012-09-22 | Production method for durable plastic surface waterproof building template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210354370.6A CN102877641B (en) | 2012-09-22 | 2012-09-22 | Production method for durable plastic surface waterproof building template |
Publications (2)
| Publication Number | Publication Date |
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| CN102877641A true CN102877641A (en) | 2013-01-16 |
| CN102877641B CN102877641B (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210354370.6A Ceased CN102877641B (en) | 2012-09-22 | 2012-09-22 | Production method for durable plastic surface waterproof building template |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538427A (en) * | 2016-01-19 | 2016-05-04 | 刘琦 | Surface treatment method for clean water plastic surface artificial board |
| CN106182213A (en) * | 2016-08-22 | 2016-12-07 | 益阳桃花江竹业发展有限公司 | A kind of production method of building concrete Bamboo Formwork |
| CN106639296A (en) * | 2016-11-24 | 2017-05-10 | 广州昱辰元创节能环保科技有限公司 | Method for producing plastic-surface building square timber |
| CN107521063A (en) * | 2017-09-29 | 2017-12-29 | 邳州市华龙木业有限公司 | A kind of production equipment of modeling face building template |
| CN111890748A (en) * | 2020-08-13 | 2020-11-06 | 潍坊荣雅木业有限公司 | Flame-retardant plastic-surface building template and preparation method thereof |
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| CN201981777U (en) * | 2011-03-17 | 2011-09-21 | 潍坊科兴塑料建材有限公司 | Plastic-wood building template |
| JP4919102B2 (en) * | 2008-11-17 | 2012-04-18 | 本田技研工業株式会社 | Cooling structure for power supply unit for vehicle |
| CN202248849U (en) * | 2011-09-17 | 2012-05-30 | 潍坊科兴塑料建材有限公司 | Durable waterproof building template with plastic surface |
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2012
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Patent Citations (7)
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| CA966972A (en) * | 1974-01-08 | 1975-05-06 | Du Pont Of Canada Limited | Coated panel |
| JPS6225513B2 (en) * | 1983-03-09 | 1987-06-03 | Toa Nenryo Kogyo Kk | |
| CN200942614Y (en) * | 2006-06-02 | 2007-09-05 | 张博 | Plastic wood composite sheet with reinforcing mat |
| CN201201350Y (en) * | 2008-03-29 | 2009-03-04 | 张博 | Plastic wood composite panel |
| JP4919102B2 (en) * | 2008-11-17 | 2012-04-18 | 本田技研工業株式会社 | Cooling structure for power supply unit for vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538427A (en) * | 2016-01-19 | 2016-05-04 | 刘琦 | Surface treatment method for clean water plastic surface artificial board |
| CN106182213A (en) * | 2016-08-22 | 2016-12-07 | 益阳桃花江竹业发展有限公司 | A kind of production method of building concrete Bamboo Formwork |
| CN106639296A (en) * | 2016-11-24 | 2017-05-10 | 广州昱辰元创节能环保科技有限公司 | Method for producing plastic-surface building square timber |
| CN106639296B (en) * | 2016-11-24 | 2018-09-25 | 广州昱辰元创节能环保科技有限公司 | A kind of production method of the modeling face building lumps of wood |
| CN107521063A (en) * | 2017-09-29 | 2017-12-29 | 邳州市华龙木业有限公司 | A kind of production equipment of modeling face building template |
| CN111890748A (en) * | 2020-08-13 | 2020-11-06 | 潍坊荣雅木业有限公司 | Flame-retardant plastic-surface building template and preparation method thereof |
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| Publication number | Publication date |
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| CN102877641B (en) | 2015-03-18 |
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