PROCESS OF POLYVINYL CHLORIDE (PVC) CLADDING WOOD

Abstract

A process of polyvinyl chloride (PVC) cladding wood includes step 1, putting a PVC mixture into a high-speed mixer, and then cooling through a rubber powder cooler to obtain a powder; step 2, adding the powder to a granulator for granulation to produce PVC particles with uniform particle size; step 3, heating a profile to be cladded at an average speed in an extruder, melting with the PVC particles, and extruding out by a co-extrusion die to form a profile with PVC material coating on a surface of the profile; step 4, after cooling by a cooling tank, forming and tracting, cutting; the process of PVC cladding wood is completed. The process of PVC cladding wood involved in the present invention attaches the PVC coating to the outer surface of a pure wood or a wood-like profile.

Claims

1. A process of a polyvinyl chloride (PVC) cladding wood, comprising the following steps: step 1, putting a PVC mixture into a high-speed mixer to obtain a resulting PVC mixture, and then cooling the resulting PVC mixture through a rubber powder cooler to obtain a powder; step 2, adding the powder to a granulator for a granulation to produce PVC particles with uniform particle size; step 3, heating a profile to be cladded at an average speed in an extruder, adding with the PVC particles, and extruding out by a co-extrusion die to form a profile with a PVC material coating on a surface; and step 4, after cooling the profile with the PVC material coating on the surface by a cooling tank to obtain a first resulting profile, conducting a forming and a tracting on the first resulting profile to obtain a second resulting profile, and cutting the second resulting profile; the process of the PVC cladding wood is completed.

2. The process of the PVC cladding wood according to claim 1, wherein in step 1, the PVC mixture comprises: a PVC powder, CaCO.sub.3, a foaming agent, a stabilizer, a color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

3. The process of the PVC cladding wood according to claim 1, wherein in step 1, a cooling temperature is 60 C.

4. The process of the PVC cladding wood according to claim 1, wherein in step 2, a structure of each of the PVC particles is a cylinder.

5. The process of the PVC cladding wood according to claim 4, wherein in step 2, a bottom area diameter of the cylinder is 2.5 mm-3.5 mm, and a height of the cylinder is 4 mm-6 mm.

6. The process of the PVC cladding wood according to claim 1, wherein in step 3, a rotational speed of the extruder is 250-300 revolutions per minute (rpm).

7. The process of the PVC cladding wood according to claim 1, wherein in step 3, a heating temperature is 120 C.-210 C.

8. The process of the PVC cladding wood according to claim 1, wherein in step 4, a cooling temperature is 0 C.-16 C.

9. The process of the PVC cladding wood according to claim 1, wherein in step 4, the operation of tracting is at a rotational speed of 25-35 rpm.

Description

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention is described in detail by combining with specific embodiments. It should be noted that the following embodiments are only a further description of the present invention, and do not limit the scope of protection of the present invention.

Embodiment 1

[0026] This embodiment relates to a process of PVC cladding L-shaped frame, including the following steps: [0027] step 1, a PVC mixture is put into a high-speed mixer, and then cooled to 60 C. through a rubber powder cooler to obtain a powder; [0028] step 2, the powder is added to a granulator for granulation to produce PVC particles with uniform particle size (3 mm*5 mm, where 3 mm refers to a size of the bottom area diameter of each PVC particle, and 5 mm refers to a height of each PVC particle); [0029] step 3, the PVC particles are heated in stages in an extruder at a rotational speed of 250 rpm and extruded into a co-extrusion die at an average speed under the interaction between a screw and a screw sleeve. Then the PVC particles are extruded out with the L-shaped frame to be cladded from the co-extrusion die at the average speed. That is, the surface of the L-shaped frame to be cladded is completely covered with an adhesion layer with extremely smooth. [0030] step 4, after cooling by a cooling tank, forming and tracting at a rotational speed of 25 rpm, and cutting. The process of PVC cladding L-shaped frame is completed.

[0031] Further, in step 1, the PVC mixture includes: PVC powder, CaCO.sub.3, foaming agent, stabilizer, color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

[0032] Further, in step 3, a heating temperature is 120 C.

[0033] Further, in step 4, a cooling temperature is 10 C.

Embodiment 2

[0034] This embodiment relates to a process of PVC cladding Z-shaped frame, including the following steps: [0035] step 1, a PVC mixture is put into a high-speed mixer, and then cooled to 60 C. through a rubber powder cooler to obtain a powder; [0036] step 2, the powder is added to a granulator for granulation to produce PVC particles with uniform particle size (2.5 mm*4 mm); [0037] step 3, the PVC particles are heated in stages in an extruder at a rotational speed of 270 rpm and extruded into a co-extrusion die at an average speed under the interaction between a screw and a screw sleeve. Then the PVC particles are extruded out with the Z-shaped frame to be cladded from the co-extrusion die at the average speed. That is, the surface of the Z-shaped frame to be cladded is completely covered with an adhesion layer with extremely smooth. [0038] step 4, after cooling by a cooling tank, forming and tracting at a rotational speed of 30 rpm, and cutting. The process of PVC cladding Z-shaped frame is completed.

[0039] Further, in step 1, the PVC mixture includes: PVC powder, CaCO.sub.3, foaming agent, stabilizer, color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

[0040] Further, in step 3, a heating temperature is 180 C.

[0041] Further, in step 4, a cooling temperature is 16 C.

Embodiment 3

[0042] This embodiment relates to a process of PVC cladding right frame with an edge, including the following steps: [0043] step 1, a PVC mixture is put into a high-speed mixer, and then cooled to 60 C. through a rubber powder cooler to obtain a powder; [0044] step 2, the powder is added to a granulator for granulation to produce PVC particles with uniform particle size (3.5 mm*5 mm); [0045] step 3, the PVC particles are heated in stages in an extruder at a rotational speed of 300 rpm and extruded into a co-extrusion die at an average speed under the interaction between a screw and a screw sleeve. Then the PVC particles are extruded out with the right frame with the edge to be cladded from the co-extrusion die at the average speed. That is, the surface of the right frame with the edge to be cladded is completely covered with an adhesion layer with extremely smooth. [0046] step 4, after cooling by a cooling tank, forming and tracting at a rotational speed of 35 rpm, and cutting. The process of PVC cladding right frame with the edge is completed.

[0047] Further, in step 1, the PVC mixture includes: PVC powder, CaCO.sub.3, foaming agent, stabilizer, color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

[0048] Further, in step 3, a heating temperature is 200 C.

[0049] Further, in step 4, a cooling temperature is 15 C.

Embodiment 4

[0050] This embodiment relates to a process of PVC cladding upper frame, including the following steps: [0051] step 1, a PVC mixture is put into a high-speed mixer, and then cooled to 60 C. through a rubber powder cooler to obtain a powder; [0052] step 2, the powder is added to a granulator for granulation to produce PVC particles with uniform particle size (3 mm*4 mm); [0053] step 3, the PVC particles are heated in stages in an extruder at a rotational speed of 280 rpm and extruded into a co-extrusion die at an average speed under the interaction between a screw and a screw sleeve. Then the PVC particles are extruded out with the upper frame to be cladded from the co-extrusion die at the average speed. That is, the surface of the upper frame to be cladded is completely covered with an adhesion layer with extremely smooth. [0054] step 4, after cooling by a cooling tank, forming and tracting at a rotational speed of 30 rpm, and cutting. The process of PVC cladding the upper frame is completed.

[0055] Further, in step 1, the PVC mixture includes: PVC powder, CaCO.sub.3, foaming agent, stabilizer, color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

[0056] Further, in step 3, a heating temperature is 210 C.

[0057] Further, in step 4, a cooling temperature is 16 C.

Embodiment 5

[0058] This embodiment relates to a process of PVC cladding lower frame, including the following steps: [0059] step 1, a PVC mixture is put into a high-speed mixer, and then cooled to 60 C. through a rubber powder cooler to obtain a powder; [0060] step 2, the powder is added to a granulator for granulation to produce PVC particles with uniform particle size (3 mm*5 mm); [0061] step 3, the PVC particles are heated in stages in an extruder at a rotational speed of 260 rpm and extruded into a co-extrusion die at an average speed under the interaction between a screw and a screw sleeve. Then the PVC particles are extruded out with the lower frame to be cladded from the co-extrusion die at the average speed. That is, the surface of the lower frame to be cladded is completely covered with an adhesion layer with extremely smooth. [0062] step 4, after cooling by a cooling tank, forming and tracting at a rotational speed of 30 rpm, and cutting. The process of PVC cladding the lower frame is completed.

[0063] Further, in step 1, the PVC mixture includes: PVC powder, CaCO.sub.3, foaming agent, stabilizer, color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

[0064] Further, in step 3, a heating temperature is 150 C.

[0065] Further, in step 4, a cooling temperature is 13 C.

Embodiment 6

[0066] This embodiment relates to a process of PVC cladding blade, including the following steps: [0067] step 1, a PVC mixture is put into a high-speed mixer, and then cooled to 60 C. through a rubber powder cooler to obtain a powder; [0068] step 2, the powder is added to a granulator for granulation to produce PVC particles with uniform particle size (3.5 mm*6 mm); [0069] step 3, the PVC particles are heated in stages in an extruder at a rotational speed of 250 rpm and extruded into a co-extrusion die at an average speed under the interaction between a screw and a screw sleeve. Then the PVC particles are extruded out with the blade to be cladded from the co-extrusion die at the average speed. That is, the surface of the blade to be cladded is completely covered with an adhesion layer with extremely smooth. [0070] step 4, after cooling by a cooling tank, forming and tracting at a rotational speed of 25 rpm, and cutting. The process of PVC cladding blade is completed.

[0071] Further, in step 1, the PVC mixture includes: PVC powder, CaCO.sub.3, foaming agent, stabilizer, color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

[0072] Further, in step 3, a heating temperature is 120 C.

[0073] Further, in step 4, a cooling temperature is 0 C.

Embodiment 7

[0074] This embodiment relates to a process of PVC cladding right frame, including the following steps: [0075] step 1, a PVC mixture is put into a high-speed mixer, and then cooled to 60 C. through a rubber powder cooler to obtain a powder; [0076] step 2, the powder is added to a granulator for granulation to produce PVC particles with uniform particle size (3.5 mm*5 mm); [0077] step 3, the PVC particles are heated in stages in an extruder at a rotational speed of 260 rpm and extruded into a co-extrusion die at an average speed under the interaction between a screw and a screw sleeve. Then the PVC particles are extruded out with the right frame to be cladded from the co-extrusion die at the average speed. That is, the surface of the right frame to be cladded is completely covered with an adhesion layer with extremely smooth. [0078] step 4, after cooling by a cooling tank, forming and tracting at a rotational speed of 28 rpm, and cutting. The process of PVC cladding right frame is completed.

[0079] Further, in step 1, the PVC mixture includes: PVC powder, CaCO.sub.3, foaming agent, stabilizer, color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

[0080] Further, in step 3, a heating temperature is 200 C.

[0081] Further, in step 4, a cooling temperature is 5 C.

Embodiment 8

[0082] This embodiment relates to a process of PVC cladding left frame, including the following steps: [0083] step 1, a PVC mixture is put into a high-speed mixer, and then cooled to 60 C. through a rubber powder cooler to obtain a powder; [0084] step 2, the powder is added to a granulator for granulation to produce PVC particles with uniform particle size (3 mm*5 mm); [0085] step 3, the PVC particles are heated in stages in an extruder at a rotational speed of 250 rpm and extruded into a co-extrusion die at an average speed under the interaction between a screw and a screw sleeve. Then the PVC particles are extruded out with the left frame to be cladded from the co-extrusion die at the average speed. That is, the surface of the left frame to be cladded is completely covered with an adhesion layer with extremely smooth. [0086] step 4, after cooling by a cooling tank, forming and tracting at a rotational speed of 30 rpm, and cutting. The process of PVC cladding left frame is completed.

[0087] Further, in step 1, the PVC mixture includes: PVC powder, CaCO.sub.3, foaming agent, stabilizer, color powder, and additives; a mass ratio of the PVC powder, the CaCO.sub.3, the foaming agent, the stabilizer, the color powder, and the additives is 7.7:1:0.1:0.6:0.4:0.2.

[0088] Further, in step 3, a heating temperature is 210 C.

[0089] Further, in step 4, a cooling temperature is 16 C.

[0090] The PVC cladding profiles referred to in the embodiments are not limited to the L-shaped frame, the Z-shaped frame, the right frame with the edge, the upper frame, the lower frame, the blade, the right frame, the left frame described above and other decorative components, but also includes profiles of different materials such as pure wood, wood-plastic, etc.

[0091] The profiles externally cladded with PVC layer are prepared by the process provided in the present invention, and the products obtained by Embodiments 1-8 is tested and compared with the products externally cladded with paint layer in terms of performance, as shown in Table 1.

TABLE-US-00001 TABLE 1 Performance Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Weather 4.5 years 5 years 4 years 4 years 5 years resistance Wind Natural wind Natural wind Natural wind Natural wind Natural wind resistance of 30 km/h, of 45 km/h, of 40 km/h, of 50 km/h, of 46 km/h, no damage no damage no damage no damage no damage ultraviolet Test 500 h, Test 500 h, Test 500 h, Test 500 h, Test 500 h, (UV) and gray and gray and gray and gray and gray resistance level is 4 level is 3 level is 4 level is 4 level is 4 Environmental Environmentally Environmentally Environmentally Environmentally Environmentally performance friendly friendly friendly friendly friendly Performance Embodiment 6 Embodiment 7 Embodiment 8 Painted profile Weather 4.5 years 5 years 5 years 3 years resistance Wind Natural wind Natural wind Natural wind Natural wind resistance of 50 km/h, of 40 km/h, of 50 km/h, of 20 km/h, no damage no damage no damage bent ultraviolet Test 500 h, Test 500 h, Test 500 h, Test 500 h, (UV) and gray and gray and gray and gray resistance level is 3 level is 3 level is 4 level is 2 Environmental Environmentally Environmentally Environmentally Not performance friendly friendly friendly environmentally friendly

[0092] Specific embodiments of the present invention are described above. It is to be understood that the present invention is not limited to the above-mentioned specific embodiments and those skilled in the art may make various variants or modifications within the scope of the claims, which does not affect the essence of the present invention.