CN101367220A - Composite section material for coating wood surface on surface of plastic/wood-plastic sectional material and manufacturing method therefor - Google Patents
Composite section material for coating wood surface on surface of plastic/wood-plastic sectional material and manufacturing method therefor Download PDFInfo
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- CN101367220A CN101367220A CNA2008102226581A CN200810222658A CN101367220A CN 101367220 A CN101367220 A CN 101367220A CN A2008102226581 A CNA2008102226581 A CN A2008102226581A CN 200810222658 A CN200810222658 A CN 200810222658A CN 101367220 A CN101367220 A CN 101367220A
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Abstract
The invention provides a composite sectional material covering bark on the surface of a plastic/wood plastic sectional material and a manufacture method thereof, in order to overcome the defects of slow solidification speed, easy defect generation of glue films and unstable bonding caused by the mode of applying single cold glue to single side for bonding a plastic surface and a wood layer in the prior art. The method comprises the following steps: A. carrying out stain and dust removal treatment to the surface to be covered of the plastic/wood plastic sectional material; B. applying hot melt adhesive to the inner surface of the bark, and applying interface affine agent to the surface to be covered of the plastic/wood plastic sectional material which is subjected to the step A; and C. rolling and covering the bark on the surface of the plastic/wood plastic sectional material through a forming roll of a covering machine, so that the inner surface of the bark and the surface to be covered of the plastic/wood plastic sectional material can be bonded together. With the manufacture method, the bonding power between the surface of the bark and the surface of the plastic/wood plastic sectional material can be greatly improved, and the glue film has excellent quality, so that the plastic/wood plastic sectional material and the bark can be firmly bonded.
Description
Technical field
The present invention relates to a kind of composite material and manufacture method thereof, be specifically related to coat the composite material and the manufacture method thereof of wooden skin on plastics/Wood-plastic profiles surface.
Background technology
Along with the development of plastic industry and reaching its maturity of manufacturing technology, plastic material and Wood-plastic profiles are by people's application more and more widely.Such as, plastics/wood-plastic door window, the plastics/wood that is used on furniture, the decorative object is moulded moulding, and the plastics/wood on the room wall is moulded moulding etc.But plastics/Wood-plastic profiles surface flatness is not enough, and texture, color can not satisfy fully to its ornamental requirement.Though and use the section bar good decorating effect of pure solid wood, it is on the high side, yielding, cracking, aberration are big, and considers also should not be extensive use of for a long time for the protection timber resources.In the prior art, some preparation methods at the composite material of frosting bonding layer of wood have appearred, Chinese invention patent " metal is or/and frosting is bonded with the preparation method of the composite material of layer of wood " as the patent No. 200610084311.6, this method is included on the outer surface of plastic material and evenly coats liquid glue, the temperature of liquid glue is 10 ℃-30 ℃, with thickness be then 0.3 millimeter-30 millimeters layer of wood carry out grinding process through sander or sandpaper inner surface with the metal that scribbles liquid glue or/and the outer surface of plastic material is pasted together, be placed on again that the pressure with 5-50T pushed 0.5 hour-4 hours it on the extruder.Technique scheme can be brought following technique effect:
1. only at plastic material outer surface gluing, layer of wood does not have gluing, promptly adopts the mode of the adhesive of single face coating single kind, makes that the bonding of section bar and layer of wood is firm inadequately.
2. the adhesive of Cai Yonging is the liquid glue of 10 ℃ of-30 ℃ of uses, is visible as a kind of cold glue, and in production application, the curing rate of cold glue is slow, influences production efficiency, and glued membrane easily produces defective.
Summary of the invention
, glued membrane slow for the curing rate that the bonding that overcomes frosting and layer of wood in the prior art adopts the mode of the cold glue of single face coating single kind to bring easily produces defective and the unstable defective that bonds, the invention provides a kind of composite material and manufacture method at plastics/wooden skin of Wood-plastic profiles surface coating, the cohesive force and the glued membrane quality that have greatly improved between wooden skin and plastics/Wood-plastic profiles surface are good, make that bonding firmly between plastics/Wood-plastic profiles and wooden skin.
Coat the manufacture method of the composite material of wooden skin, comprise the steps: on plastics/Wood-plastic profiles surface
A, the clad surface for the treatment of of plastics/Wood-plastic profiles is carried out decontamination dust and handled;
B, at the inner surface of wooden skin coating hot melt adhesive, and to treating clad surface coating interface affinity agent through the plastics/Wood-plastic profiles after the processing of step A;
C, the moulding running roller by coating machine are pressed wooden roller and are coated on the surface of plastics/Wood-plastic profiles, and the clad surface for the treatment of of the inner surface of described wooden skin and plastics/Wood-plastic profiles bonds together.
Described hot melt adhesive is that reaction type polyurethane hot-melt adhesive or TPO coat PUR, and the melt temperature of described hot melt adhesive is 110 ℃-220 ℃.
The glue-spread of described hot melt adhesive is 60g/m
2-120g/m
2
The main component of described interface affinity agent is condensation resin and chlorinated hydrocarbon.
The inner surface of described wooden skin is set up nonwoven layer.
Also comprise the preliminary treatment to wooden skin in steps A, described preliminary treatment comprises wetting to wooden skin outer surface, and the moisture content that makes wooden skin is between 20%-30%.
Above-mentioned preliminary treatment to wooden skin also comprises to be handled wooden skin heat temperature raising, and described temperature range is 25 ℃-55 ℃.
In step B, to plastics/Wood-plastic profiles treat comprise that also heat temperature raising is carried out on the plastics/surface of Wood-plastic profiles coating interface affinity agent to be handled after the affinity agent of clad surface coating interface, described temperature range is 28 ℃-55 ℃.
The thickness of above-mentioned wooden skin is 0.15 millimeter-0.5 millimeter.
The composite material that adopts above-mentioned manufacture method to make at plastics/wooden skin of Wood-plastic profiles surface coating.
The present invention improves the technology that plastics/Wood-plastic profiles surface coats wooden skin, because profile structure is than sheet material complexity, should not be coated with hot melt adhesive, therefore be chosen in the inner surface coating hot melt adhesive of wooden skin, simultaneously at plastics/Wood-plastic profiles coating interface, surface affinity agent to be coated, and by the moulding running roller of coating machine wooden roller pressure is coated on the surface of plastics/Wood-plastic profiles.Adopt the hot melt adhesive curing rate fast, can enhance productivity, and the glued membrane quality is good.Adopt the interface affinity agent, because the main component of wooden skin is a cellulose, contain a large amount of hydroxyls in the cellulose, has strong polarity, and possess hydrophilic property, and plastics or Wood-plastic profiles surface are nonpolar and have hydrophobicity, both surface appearances differ greatly, interfacial adhesion is very little, at plastics/coating interface, Wood-plastic profiles surface affinity agent, polarity that can excitation plastic/Wood-plastic profiles surface, thereby improve the interface affinity between plastics/Wood-plastic profiles surface and the wooden skin surface, greatly strengthen the cohesive force on plastics/Wood-plastic profiles surface and wooden skin surface, overcome the bonding unstable defective that the bonding of frosting and layer of wood adopts single face to be coated with the cold glue of single kind in the prior art mode is brought; In addition, the interface affinity agent of coating can also improve the curing rate of hot melt adhesive, has also just improved the production efficiency of glued membrane quality and composite material.Employing has the coating machine of moulding running roller, because section bar is different from plane materiel or sheet material, the cross section of section bar has specific shape, and it treats also on-plane surface of clad surface, can't realize by the method that the plane overlays.
Preferably, adopt reaction type polyurethane hot-melt adhesive (PUR PUR) as hot melt adhesive, this PUR PUR is a kind of reaction type hot-fusible glue, its melt temperature is between 110 ℃-220 ℃, in 110 ℃ of-220 ℃ of temperature ranges, glue is coated on the inner surface of wooden skin, when with the plastics/Wood-plastic profiles of coating interface affinity agent treat the clad surface bonding after, PUR PUR cooling curing in air, begin simultaneously irreversible chemical reaction to take place with airborne moisture, reach required bond effect, after reaction is finished, can under different temperature, have highly stable performance, overcome common PUR and under cryogenic conditions, be easy to embrittlement, under hot conditions, be easy to the softening defective of coming unstuck that causes again, simultaneously, PUR PUR water-tolerant can not come unstuck even soak in water yet.The present invention can also adopt TPO to coat PUR (PO PUR) as hot melt adhesive, and this PO PUR cost is low, softening point is high, durability good.Glue-spread when adopting PUR PUR or PO hot melt glue spreading is 60g/m
2-120g/m
2, make the thickness of glued membrane moderate, guaranteed that PUR PUR or PO PUR evenly can not make glued membrane blocked up in the coating on wooden skin surface yet, influence the quality of bond effect, finished product and attractive in appearance.
The wood micromicro is the wooden skin of nonwoven to adopt inner surface, and the faying face that the inner surface of wooden skin is and plastics/Wood-plastic profiles bonds adopts the inner surface of nonwoven to replace smooth inner surface, has strengthened the cohesive force between wooden skin and plastics/Wood-plastic profiles; The pliability of nonwoven is good simultaneously, price is low, in the flexible cost of raw material price that reduced simultaneously that improves wooden skin integral body.
Before wooden skin gluing, can also carry out preliminary treatment to wooden skin, improve the bond effect of product, preliminary treatment comprises the wettability treatment to wooden skin outer surface, the moisture content that makes wooden skin strengthens the expansion and contraction of wooden hide fiber, promptly strengthens the toughness of wooden skin between 20%-30%; Comprise also the heat temperature raising of wooden skin handled that temperature range is between 25 ℃-55 ℃, and is feasible when hot melt adhesive is coated on wooden skin surface, can be not low excessively because of wooden skin temperature, influence gummed property.Similarly, before behind plastics/coating interface, Wood-plastic profiles surface affinity agent, with wooden skin, boning, plastics/the surface of Wood-plastic profiles coating interface affinity agent is carried out heat temperature raising and handled, described temperature range is between 28 ℃-55 ℃, purpose also is when adhesive contacts with the surface of plastics/Wood-plastic profiles coating interface affinity agent, can be not low excessively because of the surface temperature of plastics/Wood-plastic profiles coating interface affinity agent, influence gummed property.
The thickness of wood skin is preferably between 0.15 millimeter-0.5 millimeter, and the thickness of wooden skin is spent thin or blocked up all being unfavorable for and coated by the coating machine of band moulding running roller.
Adopt that the inventive method prepares composite material, cohesive force height and glued membrane quality between wooden skin and plastics/Wood-plastic profiles surface are good, boning between plastics/Wood-plastic profiles and wooden skin firmly is difficult for coming unglued composite material quality height, long service life.
Figure of description
Fig. 1 the present invention coats preparation method's flow chart of wooden skin on plastics/Wood-plastic profiles surface.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is described in more detail below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
PUR PUR among the following embodiment, PO PUR, main component are that the interface affinity agent of condensation resin and chlorinated hydrocarbon is the commercially available prod.
Embodiment 1
(1) ABS (acrylonitrile-styrene-butadiene copolymer) section bar is carried out decontamination dust and handle, promptly take out the dust that section bar treats that clad surface is adhered to, be beneficial to the gummed of section bar surface and wooden skin in the subsequent technique by getter device;
(2) clad surface for the treatment of to the ABS section bar after the dedusting evenly is coated with the interface affinity agent that main component is condensation resin and chlorinated hydrocarbon;
(3) when carrying out step (1) and (2), be the inner surface coating PUR PUR of 0.15 millimeter wooden skin to thickness, the melt temperature of PUR PUR is 110 ℃, and its gluing temperature is 120 ℃, and glue-spread is 90g/m
2
(4) to ABS section bar of handling through step (1) and (2) and the wooden skin of handling through step (3), coating machine roll-in by band moulding running roller coats, the moulding running roller is 20, and the inner surface of wood skin and plastics/Wood-plastic profiles treated that clad surface is bonding when roll-in coated.
Embodiment 2
The difference of present embodiment and embodiment 1 is that the inner surface of described wooden skin is set up nonwoven layer, correspondingly, the gluing processing on wooden intracutaneous surface is carried out on nonwoven layer.In addition, also will carry out sawing to the ABS composite material of the coating wood skin handled through step (1) to (4) and handle, described sawing is handled and is adopted sawing machine, makes its periphery neatly, and length and/or width are satisfied to be deposited and requirements on transport.
Embodiment 3
The difference of present embodiment and embodiment 2 is, also will carry out the health stage before dispatching from the factory the ABS composite material that coats wooden skin, and described health was left standstill 12 hours in room temperature, calm, shady and cool place for the ABS composite material that will coat wooden skin.
In addition, the time of repose in health stage also can be 24 hours, 36 hours, 48 hours etc., generally decides on the glue-spread of PUR PUR, make its abundant and airborne reaction of moisture, can finish the health stage after question response is finished, usually, time of repose is 6-48 hours.
Embodiment 4
(1) the ABS section bar is carried out decontamination dust and handle, promptly take out the dust that section bar treats that clad surface is adhered to, be beneficial to the gummed of section bar surface and wooden skin in the subsequent technique by getter device;
(2) clad surface for the treatment of to the ABS section bar after the dedusting evenly is coated with the interface affinity agent that main component is condensation resin and chlorinated hydrocarbon;
(3) when carrying out step (1) and (2), be that 0.5 millimeter wooden skin carries out wettability treatment to thickness, make its moisture content 30% with the wetting wooden skin of rubber rollers surface;
(4) the wooden intracutaneous surface coating PUR PUR to handling through step (3), the melt temperature of PUR PUR is 220 ℃, and its gluing temperature is 220 ℃, and glue-spread is 120g/m
2
(5) to ABS section bar of handling through step (1) and (2) and the wooden skin of handling through step (3) and (4), coating machine roll-in by band moulding running roller coats, the moulding running roller is 60, and the inner surface of wood skin and plastics/Wood-plastic profiles treated that clad surface is bonding when roll-in coated.
Embodiment 5
(1) PVC (polyvinyl chloride) section bar is carried out decontamination dust and handle, promptly take out the dust that section bar treats that clad surface is adhered to, be beneficial to the gummed of section bar surface and wooden skin in the subsequent technique by getter device;
(2) clad surface for the treatment of to the PVC section bar after the dedusting evenly is coated with the interface affinity agent that main component is condensation resin and chlorinated hydrocarbon;
(3) when carrying out step (1) and (2), be that 0.3 millimeter wooden skin carries out wetting heat treated to thickness, make its moisture content 25% with the wetting wooden skin of rubber rollers surface, and heat to 40 ℃;
(4) the wooden intracutaneous surface coating PO PUR to handling through step (3), the melt temperature of PO PUR is 200 ℃, and its gluing temperature is 210 ℃, and glue-spread is 100g/m
2
(5) to PVC section bar of handling through step (1) and (2) and the wooden skin of handling through step (3) and (4), coating machine roll-in by band moulding running roller coats, the moulding running roller is 40, and the inner surface of wood skin and plastics/Wood-plastic profiles treated that clad surface is bonding when roll-in coated.
Embodiment 6
(1) PVC (polyvinyl chloride) section bar is carried out decontamination dust and handle, promptly take out the dust that section bar treats that clad surface is adhered to, be beneficial to the gummed of section bar surface and wooden skin in the subsequent technique by getter device;
(2) clad surface for the treatment of to the PVC section bar after the dedusting evenly is coated with the interface affinity agent that main component is condensation resin and chlorinated hydrocarbon;
(3) PVC of coating interface affinity agent is treated that clad surface carries out heat treated, heat to 55 ℃;
(4) when carrying out step (1)-(3), be that 0.5 millimeter wooden skin carries out heat treated to thickness, heat to 55 ℃;
(5) the wooden intracutaneous surface coating PO PUR to handling through step (4), the melt temperature of PO PUR is 180 ℃, and its gluing temperature is 180 ℃, and glue-spread is 120g/m
2
(6) to PVC section bar of handling through step (1)-(3) and the wooden skin of handling through step (4) and (5), coating machine roll-in by band moulding running roller coats, the moulding running roller is 40, and the inner surface of wood skin and plastics/Wood-plastic profiles treated that clad surface is bonding when roll-in coated.
In addition, when coating PUR PUR, adopt the special seal gum case, add the inner surface that pressure handle PUR PUR is sprayed on wooden skin, adopt the mode gluing of spraying can save glue consumption, coating evenly by heating.And, the curing rate of PUR PUR is fast, hardening time is greatly about 7-30 seconds, therefore, the feed speed of plastics/Wood-plastic profiles on coating machine of the wooden skin of coating PUR PUR and coating interface affinity agent should be not less than 8m/min, because the restriction of coating machine self and artificial cooperation speed, generally speaking, above-mentioned feed speed should be not more than 25m/min.In addition, the use number of the moulding running roller in the coating machine is relevant with the complexity on section bar surface, and generally speaking, the section bar surface is complicated more, and the use number of moulding running roller is many more.
Claims (10)
1. coat the manufacture method of the composite material of wooden skin on plastics/Wood-plastic profiles surface, it is characterized in that, comprise the steps:
A, the clad surface for the treatment of of plastics/Wood-plastic profiles is carried out decontamination dust and handled;
B, at the inner surface of wooden skin coating hot melt adhesive, and to treating clad surface coating interface affinity agent through the plastics/Wood-plastic profiles after the processing of step A;
C, the moulding running roller by coating machine are pressed wooden roller and are coated on the surface of plastics/Wood-plastic profiles, and the clad surface for the treatment of of the inner surface of described wooden skin and plastics/Wood-plastic profiles bonds together.
2. according to claim 1 in the surperficial manufacture method that coats the composite material of wooden skin of plastics/Wood-plastic profiles, it is characterized in that, described hot melt adhesive is that reaction type polyurethane hot-melt adhesive or TPO coat PUR, and the melt temperature of described hot melt adhesive is 110 ℃-220 ℃.
3. according to claim 2 in the surperficial manufacture method that coats the composite material of wooden skin of plastics/Wood-plastic profiles, it is characterized in that the glue-spread of described hot melt adhesive is 60g/m
2-120g/m
2
4. according to claim 2 or the 3 described manufacture methods that coat the composite material of wooden skin on plastics/Wood-plastic profiles surface, it is characterized in that the main component of described interface affinity agent is condensation resin and chlorinated hydrocarbon.
5. according to claim 1 in the surperficial manufacture method that coats the composite material of wooden skin of plastics/Wood-plastic profiles, it is characterized in that the inner surface of described wooden skin is set up nonwoven layer.
6. according to claim 1 in the surperficial manufacture method that coats the composite material of wooden skin of plastics/Wood-plastic profiles, it is characterized in that, also comprise the preliminary treatment to wooden skin in steps A, described preliminary treatment comprises wetting to wooden skin outer surface, and the moisture content that makes wooden skin is between 20%-30%.
7. the manufacture method that coats the composite material of wooden skin on plastics/Wood-plastic profiles surface according to claim 6 is characterized in that described preliminary treatment to wooden skin also comprises to be handled wooden skin heat temperature raising, and described temperature range is 25 ℃-55 ℃.
8. according to claim 1 in the surperficial manufacture method that coats the composite material of wooden skin of plastics/Wood-plastic profiles, it is characterized in that, in step B, to treating after the affinity agent of clad surface coating interface of plastics/Wood-plastic profiles, comprise that also heat temperature raising is carried out on the plastics/surface of Wood-plastic profiles coating interface affinity agent to be handled, described temperature range is 28 ℃-55 ℃.
9. according to claim 1 in the surperficial manufacture method that coats the composite material of wooden skin of plastics/Wood-plastic profiles, it is characterized in that the thickness of described wooden skin is 0.15 millimeter-0.5 millimeter.
10. adopt the composite material at plastics/wooden skin of Wood-plastic profiles surface coating of the manufacture method manufacturing of one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102226581A CN101367220A (en) | 2008-09-19 | 2008-09-19 | Composite section material for coating wood surface on surface of plastic/wood-plastic sectional material and manufacturing method therefor |
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|---|---|---|---|
| CNA2008102226581A CN101367220A (en) | 2008-09-19 | 2008-09-19 | Composite section material for coating wood surface on surface of plastic/wood-plastic sectional material and manufacturing method therefor |
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| CN109079933A (en) * | 2018-07-24 | 2018-12-25 | 陈敏芬 | The production technology of improved molding wooden piece coating melamine impregnation abrasion-proof paper |
| CN109079933B (en) * | 2018-07-24 | 2022-07-15 | 陈敏芬 | Improved production process of mould pressing wood piece coating melamine impregnated wear-resistant paper |
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