CN106193516A - Wood-plastic board and preparation method thereof - Google Patents
Wood-plastic board and preparation method thereof Download PDFInfo
- Publication number
- CN106193516A CN106193516A CN201610561679.0A CN201610561679A CN106193516A CN 106193516 A CN106193516 A CN 106193516A CN 201610561679 A CN201610561679 A CN 201610561679A CN 106193516 A CN106193516 A CN 106193516A
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- CN
- China
- Prior art keywords
- wood
- layer
- plastic
- adhesive
- film layers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The open a kind of wood-plastic board of the present invention, including the first plastic film layers set gradually, the first adhesive-layer, wood chip, the second adhesive-layer and the second plastic film layers.Present invention also offers the preparation method of wood-plastic board.The wood-plastic board of the present invention due to wood chip two sides all by covered rearing with plastic film, wood chip two sides all with air exclusion, the moisture change in air does not results in the change the most greatly of the size of wood chip.Moisture in wood chip also will not because of variations in temperature from upper and lower surface volatilize, so size variation with temperature hardly and change.Owing to plastic sheeting is bonded together with wood chip so that the size of plastic sheeting also will not variation with temperature and have a greater change.Wood chip two sides all adhesion of plastic films, the performance complement of both sides, overcome respective shortcoming, wood-plastic board moulds plate or pure plank is more advantageous than pure in stability.The ratio of shrinkage swelling of this wood-plastic board is 0.03% to 0.08% (with EN434 standard).
Description
Technical field
The present invention relates to sheet material, particularly to wood-plastic board with relatively low rate of expanding with heat and contract with cold and preparation method thereof.
Background technology
Owing to PVC floor has waterproof and dampproof, zero formaldehyde, deeply liked by consumer.Due to the PVC change to temperature
Changing very sensitive, the ratio of shrinkage swelling varied with temperature is the highest, limits its use condition.Although people constantly research and develop in recent years,
Such as reduce, by raw materials such as interpolation plasticizers in PVC, the ratio of shrinkage swelling that PVC varies with temperature, but effect is still paid no attention to
Think.
Common PVC floor is to be made up of four parts, the bed of material and PVC initial bed in PVC wearing layer, PVC coloured silk film, PVC.This
After four layers of PVC are by hot pressing, cooling molding, cut and become PVC floor.In these four layers of PVC, with wearing layer, color film and bed material
The ratio of shrinkage swelling varied with temperature of layer is the highest.Although can be by using tempering process to reduce it with temperature in producing raw journey
Degree change ratio of shrinkage swelling, but the rate of expanding with heat and contract with cold of the PVC board after tempering process still between 0.25% to 0.35% (with
EN434 standard).
Summary of the invention
The invention aims to provide a kind of wood-plastic board with relatively low rate of expanding with heat and contract with cold and preparation method thereof, can solve
Certainly one or more in above-mentioned prior art problem.
According to an aspect of the invention, it is provided a kind of wood-plastic board, including the first plastic film layers set gradually, the
One adhesive-layer, wood chip, the second adhesive-layer and the second plastic film layers.
Plastic sheeting is very sensitive to the change of temperature, and the change of temperature can cause it to expand with heat and contract with cold, and moisture in air contains
The change of amount is not affect plastic sheeting.In the change of ambient temperature or air, the change of humidity causes the moisture in wood chip
Volatilization or absorption, thus cause the change in size of wood chip.
The wood-plastic board of the present invention due to wood chip two sides all by covered rearing with plastic film, wood chip two sides all with air exclusion, air
In moisture change do not result in the change the most greatly of the size of wood chip.Moisture in wood chip also will not be because of variations in temperature from up and down
Two sides volatilization or absorb, so the size of wood chip variation with temperature hardly and change.Owing to plastic sheeting bonds with wood chip
Together so that the size of plastic sheeting also will not variation with temperature and have a greater change.Wood chip two sides all bond plastic
Thin film, the performance complement of both sides, overcome respective shortcoming, so wood-plastic board moulds plate or pure plank is excellent than pure in stability
The most much.The rate of expanding with heat and contract with cold of this wood-plastic board is 0.03% to 0.08% (with EN434 standard).
If additionally, use transparent plastic sheeting, this wood-plastic board can obtain the sheet material with natural wood veins pattern, and
Not being the grain pattern of printing, pattern is true to nature, and the appreciative value of wood-plastic board can be greatly improved.
In some embodiments, the thickness of the wood chip of the present invention is 0.05～0.5mm, the first plastic film layers or second
The thickness of plastic film layers is 0.05～0.7mm.If wood chip is the thickest, the area that wood chip cross section is exposed is big, can accelerate moisture
Absorb or distribute, affecting the stability of wood-plastic board.If wood chip is the thinnest, then difficulty of processing is bigger.Plastic sheeting is the thickest, its heat
Swollen shrinkage rate is the highest.For improving the stability of wood-plastic board, preferably use relatively thin plastic sheeting.
In some embodiments, the wood-plastic board of the present invention also includes being sequentially arranged in the first plastic film layers or the second plastics
The bed of material and PVC initial bed in the PVC of thin layer lateral surface.Plus the bed of material in PVC and PVC initial bed, wood-plastic board can be increased
Hardness.
In some embodiments, the wood-plastic board of the present invention also includes being located at the first plastic film layers or the second plastic sheeting
The calcium-plastic board of layer lateral surface.Add calcium-plastic board, the sound insulation of wood-plastic board can be made, heat insulation and humidity resistance is more preferable.
In some embodiments, the wood-plastic board of the present invention include many groups of the first plastic film layers set gradually, first
Adhesive-layer, wood chip, the second adhesive-layer and the second plastic film layers, the first adhesive-layer and the second adhesive-layer are PUR.This wood
Mould plate and both can have enough thickness, it is possibility to have lower rate of expanding with heat and contract with cold.
According to an aspect of the invention, it is provided the preparation method of a kind of wood-plastic board, comprise the following steps: that (1) is by
One plastic film layers one side adheres to the first adhesive-layer, and the second plastic film layers one side is adhered to the second adhesive-layer；；(2) preparation wood
Moulding assembly, the first plastic film layers, wood chip and the second plastic film layers that assembly includes stacking successively moulded by wood；(3) hot pressing is passed through
Or wood moulded assembly and is pressed into wood-plastic board by mode of colding pressing.
According to another aspect of the present invention, it is provided that the another preparation method of a kind of wood-plastic board, (1) is comprised the following steps:
First adhesive-layer and the second adhesive-layer are respectively attached to the two sides of wood chip；(2) preparing wood and mould assembly, wood is moulded assembly and is included successively
The first plastic film layers, wood chip and the second plastic film layers stacked；(3) by hot pressing or mode of colding pressing, wood is moulded assembly to suppress
Become wood-plastic board.
In some embodiments, preparing wood in step (2) and mould assembly, the first plastics that assembly includes stacking successively moulded by wood
Thin layer, wood chip and the second plastic film layers, and the bed of material and PVC initial bed in PVC.
In some embodiments, also include that step (4) is by the mode of colding pressing, wood-plastic board step (3) prepared and calcium
Mould plate to press together.
In some embodiments, mould assembly stack organizing wood more, use hot pressing mode to be pressed into wood-plastic board, the first viscose glue
Layer and the second adhesive-layer are PUR.The wood-plastic board using this preparation method to prepare both can have enough thickness, it is also possible to
There is lower rate of expanding with heat and contract with cold.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wood-plastic board of one embodiment of the present invention.
Fig. 2 is the structural representation of the wood-plastic board of another embodiment of the present invention.
Fig. 3 is the structural representation of the wood-plastic board of another embodiment of the present invention.
Fig. 4 is the structural representation of the wood-plastic board of still another embodiment of the present invention.
Detailed description of the invention
The invention will be further described by the following examples, but its protection domain is not restricted by the embodiments.
Embodiment 1:
The preparation method of wood-plastic board, including step: PUR is respectively attached to the first layer of PVC and the second layer of PVC by (1)
In one side；(2) the first layer of PVC, wood chip and the second layer of PVC are stacked successively formation wood and mould assembly, the first layer of PVC and the 2nd PVC
On be attached with the one of PUR facing to wood chip；(3) by hot pressing mode, wood is moulded assembly and be pressed into wood-plastic board.Wood is moulded assembly
It is placed between two block plates, moulds assembly by steel plate to wood and apply the pressure of 1～20 MPa, directly two block plates are heated to
100～200 degrees Celsius, the heat on steel plate is transmitted to wood and moulds on assembly, continues 3～20 minutes.After pressure releases, assembly moulded by wood
It is formed for wood-plastic board.
First plastic film layers the 11, first adhesive-layer 21 that the structure of this wood-plastic board as it is shown in figure 1, include sets gradually,
Wood chip the 30, second adhesive-layer 22 and the second plastic film layers 12.
To use the modes such as injection or coating, PUR can be respectively attached to the first layer of PVC and the 2nd PVC in step (1)
The one side of layer.
In the present embodiment, the first plastic film layers and the second plastic film layers are the PVC film of 0.5 millimeters thick.?
In other embodiments, the first plastic film layers 11 and the second plastic film layers 12 can be respectively adopted polrvinyl chloride (PVC), poly-second
Alkene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), ethylene/acetic acid ethylene (EVA) or
One or both combination in the thin film such as polyamide (PA), film thickness can be 0.02mm 20.0mm, optimum thickness range
For 0.05mm～0.7mm.
In the present embodiment, the thickness of wood chip is 0.5mm, can prepare wood chip 30 by the mode such as slicing or rotary-cut.At it
In its embodiment, the thickness of wood chip can be 0.02～1.5mm, preferably 0.05～0.5mm.
In the present embodiment, the first adhesive-layer 21 and the second adhesive-layer 22 are PUR, so using heat in step (3)
Pressure mode.In other embodiments, can select, according to the type of glue, the mode using hot pressing or colding pressing in step (3).The
One adhesive-layer and the second adhesive-layer can be any being suitable for the adhesive of plastic sheeting with wood chip bonding.
Table 1 is embodiment 1, and some other uses identical method, different plastic sheetings to prepare from embodiment 1
The rate of expanding with heat and contract with cold (with EN434 standard) of wood-plastic board.
Table 1:
Embodiment 2:
The preparation method of wood-plastic board, comprises the following steps: that PUR is respectively attached to the two sides of wood chip by (1)；(2) by
One layer of PVC, wood chip and the second layer of PVC, and the bed of material and PVC initial bed in PVC, stack formation wood successively and mould assembly；(3) pass through
Wood is moulded assembly and is pressed into wood-plastic board (hot pressing mode is same as in Example 1) by hot pressing mode.
First plastic film layers the 11, first adhesive-layer 21 that the structure of this wood-plastic board as in figure 2 it is shown, include sets gradually,
Wood chip the 30, second adhesive-layer 22 and the second plastic film layers 12, and the bed of material 40 and PVC bed material 50 in PVC.
Step (1) can with use spray, PUR is respectively attached to the two sides of wood chip 30 by the mode such as be impregnated or coated with.
The thickness of the first layer of PVC 11 is 0.5mm, and the thickness of wood chip 30 is 0.5mm, and the thickness of the second layer of PVC is 0.5mm,
In PVC the thickness of the bed of material be the thickness of 1.0mm, PVC initial bed be 1.0mm.
In PVC, the bed of material 40 is PVC mixed powder, plasticizer, calcium carbonate and other auxiliary agents to be mixed and processed, wherein carbonic acid
Calcium content is more, can improve stability in the large.
The composition of PVC initial bed 50 is similar with middle material, but calcium carbonate content is less, and adds other auxiliary agents and balance
Expanding with heat and contract with cold of PVC wearing layer.
Table 2 is embodiment 2, and wood-plastic board prepared by some other method same as in Example 2, different plastic sheeting
Rate of expanding with heat and contract with cold (with EN434 standard).
Table 2:
Embodiment 3:
The preparation method of wood-plastic board, comprises the following steps: that PUR is respectively attached to the two sides of wood chip by (1)；(2) by
One layer of PVC, wood chip and the second layer of PVC, stack formation wood successively and mould assembly；(3) by hot pressing, wood is moulded assembly to be pressed into wood and mould
Plate；(4) by colding pressing, the wood-plastic board that step (3) prepares is pressed together with calcium-plastic board.Wood is moulded assembly and is placed in two block plates
Between, mould assembly by steel plate to wood and apply the pressure of 1～20 MPa, continue 3～20 minutes.After pressure releases, calcium-plastic board with
The wood-plastic board that step (3) prepares is bonded together.
First plastic film layers the 11, first adhesive-layer 21 that the structure of this wood-plastic board as it is shown on figure 3, include sets gradually,
Wood chip the 30, second adhesive-layer 22 and the second plastic film layers 12, and calcium-plastic board 60.
The thickness of the first layer of PVC 11 is 0.5mm, and the thickness of wood chip 30 is 0.5mm, and the thickness of the second layer of PVC is 0.5mm,
The thickness of calcium-plastic board 60 can select as required.
Table 3 is embodiment 3, and wood-plastic board prepared by some other method same as in Example 3, different plastic sheeting
Rate of expanding with heat and contract with cold (with EN434 standard).
Table 3:
Embodiment 4:
The preparation method of wood-plastic board, including step: comprise the following steps: that the first adhesive-layer is attached to a PVC by (1)
Layer, is attached to the second layer of PVC by the second adhesive-layer；(2) the first layer of PVC, wood chip and the second layer of PVC stack formation wood successively to mould
Assembly；(3) three groups of wood are moulded assembly to stack, by hot pressing, three groups of wood are moulded assembly and be pressed into a wood-plastic board.Three groups of wood are moulded
Assembly is placed between two block plates, moulds assembly by steel plate to wood and applies the pressure of 1～20 MPa, directly by two block plate heating
To 100～200 degrees Celsius, the heat on steel plate is transmitted to wood and moulds on assembly, continues 3～20 minutes.After pressure releases, group moulded by wood
Base is formed for including the wood-plastic board of three layers of wood chip, and the rate of expanding with heat and contract with cold of the wood-plastic board that this mode prepares is lower.
The structure of this wood-plastic board as shown in Figure 4, mould assembly and stack by three groups of wood, often group wood mould that assembly includes setting gradually the
One plastic film layers the 11, first adhesive-layer 21, wood chip the 30, second adhesive-layer 22 and the second plastic film layers 12.Adjacent first
Layer of PVC can not use adhesive together with passing through heat pressure adhesive with the second layer of PVC.
Wood is moulded the quantity of assembly and can be selected as required.
First adhesive-layer 21 and the second adhesive-layer 22 are all PUR.
The thickness of the first layer of PVC 11 is 0.5mm, and the thickness of wood chip 30 is 0.5mm, and the thickness of the second layer of PVC is 0.5mm.
Table 4 is embodiment 4, and wood-plastic board prepared by some other method the same as in Example 4, different plastic sheeting
Rate of expanding with heat and contract with cold (with EN434 standard).
Table 4:
As seen from the above-described embodiment, the rate of expanding with heat and contract with cold of the wood-plastic board prepared by the method for the present invention moulds plate significantly lower than pure
Rate of expanding with heat and contract with cold.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, it is also possible to making some deformation and improvement, these broadly fall into the protection model of the present invention
Enclose.
Claims (10)
1. wood-plastic board, it is characterised in that the first plastic film layers of including setting gradually, the first adhesive-layer, wood chip, the second viscose glue
Layer and the second plastic film layers.
Wood-plastic board the most according to claim 1, it is characterised in that the thickness of described wood chip is 0.05～0.5mm, described
The thickness of one plastic film layers or described second plastic film layers is 0.05～0.7mm.
3. according to the wood-plastic board described in any one of claims 1 to 3, it is characterised in that also include that being sequentially arranged in described first moulds
The bed of material and PVC initial bed in the PVC of material thin layer or the second plastic film layers lateral surface.
4. according to the wood-plastic board described in any one of claims 1 to 3, it is characterised in that also include being located at described first plastics thin
Film layer or the calcium-plastic board of the second plastic film layers lateral surface.
5. according to the wood-plastic board described in any one of claims 1 to 3, it is characterised in that include that many groups of first set gradually are moulded
Material thin layer, the first adhesive-layer, wood chip, the second adhesive-layer and the second plastic film layers, the first adhesive-layer and the second adhesive-layer are
PUR.
6. the preparation method of wood-plastic board, comprises the following steps:
(1) the first plastic film layers one side is adhered to the first adhesive-layer, the second plastic film layers one side is adhered to the second adhesive-layer；
(2) preparing wood and mould assembly, it is thin that described wood moulds the first plastic film layers, wood chip and the second plastics that assembly includes stacking successively
Film layer；
(3) described wood is moulded assembly be pressed into wood-plastic board by hot pressing or mode of colding pressing.
7. the preparation method of wood-plastic board, comprises the following steps:
(1) the first adhesive-layer and the second adhesive-layer are respectively attached to the two sides of wood chip；
(2) preparing wood and mould assembly, it is thin that described wood moulds the first plastic film layers, wood chip and the second plastics that assembly includes stacking successively
Film layer；
(3) described wood is moulded assembly be pressed into wood-plastic board by hot pressing or mode of colding pressing.
8. according to the preparation method described in claim 6 or 7, wherein, preparing wood in described step (2) and mould assembly, described wood is moulded
Assembly includes the first plastic film layers, wood chip and the second plastic film layers stacked successively, and the bed of material and PVC bed material in PVC
Layer.
9. according to the preparation method described in claim 6 or 7, wherein, also include step (4) by the mode of colding pressing, by described step
Suddenly the wood-plastic board that (3) prepare presses together with calcium-plastic board.
10. according to the preparation method described in claim 6 or 7, mould assembly stack organizing wood more, use hot pressing mode to be pressed into wood
Moulding plate, described first adhesive-layer and the second adhesive-layer are PUR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610561679.0A CN106193516A (en) | 2016-07-14 | 2016-07-14 | Wood-plastic board and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610561679.0A CN106193516A (en) | 2016-07-14 | 2016-07-14 | Wood-plastic board and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106193516A true CN106193516A (en) | 2016-12-07 |
Family
ID=57475800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610561679.0A Pending CN106193516A (en) | 2016-07-14 | 2016-07-14 | Wood-plastic board and preparation method thereof |
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| CN (1) | CN106193516A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220396003A1 (en) * | 2021-06-15 | 2022-12-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Wood-plastic hybrid component for use in a motor vehicle |
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Cited By (1)
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|---|---|---|---|---|
| US20220396003A1 (en) * | 2021-06-15 | 2022-12-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Wood-plastic hybrid component for use in a motor vehicle |
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Application publication date: 20161207 |