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    • 专利摘要:
    The present invention relates to a composite floor and an associated manufacturing method. The composite floor comprises a compression molded coextrusion layer (1) using a coextrusion process. the coextrusion layer (1) comprises a first polyvinyl chloride (PVC) balance layer (11), a composite wood / plastic (WPC) honeycomb layer (12), and a second PVC balance layer (12); 13) arranged in this order from top to bottom. In the composite floor according to the present invention, the cellular WPC layer (12) is used as the main material layer, which has reduced the total weight of the floor. The first PVC balance layer (11) and the second PVC balance layer (13) are respectively arranged on both sides of the WPC honeycomb layer (12) so that the performance of the composite floor is more stable. By avoiding the use of glue for bonding, adopting the coextrusion process for compression molding is more environmentally friendly and the manufacturing process is simpler. The use of the coextrusion process makes the bonding of the various layers more compact, and there is less risk that delamination and deformation will occur as a result of environmental changes. In addition, the composite floor of the present invention has a low coefficient of expansion, a low coefficient of shrinkage, excellent performance and a long service life.
    公开号:FR3062082A1
    申请号:FR1757685
    申请日:2017-08-16
    公开日:2018-07-27
    发明作者:Huibin DAI
    申请人:Zhejiang Kingdom Plastics Ind Co Ltd；
    IPC主号:
    专利说明:

    © Holder (s): ZHEJIANG KINGDOM PLASTICS INDUSTRY CO., LTD ..
    O Extension request (s):
    © Agent (s): NOVAGRAAF TECHNOLOGIES.
    © COMPOSITE FLOOR AND MANUFACTURING METHOD THEREOF.
    FR 3,062,082 - A1 (57) The present invention relates to a composite floor and an associated manufacturing method. The composite floor comprises a coextrusion layer (1) compression molded using a coextrusion process, the coextrusion layer (1) comprises a first equilibrium layer of polyvinyl chloride (PVC) (11), a composite cellular layer made of wood / plastic (WPC) (12), and a second PVC balance layer (13) arranged in this order from top to bottom. In the composite floor according to the present invention, the WPC honeycomb layer (12) is used as the main material layer, which reduced the total weight of the floor. The first PVC balance layer (11) and the second PVC balance layer (13) are arranged respectively on both sides of the WPC honeycomb layer (12) so that the performance of the composite floor is more stable. By avoiding the use of glue for bonding, adopting the coextrusion process for compression molding is more environmentally friendly and the manufacturing process is simpler. The use of the coextrusion process makes the bonding of the various layers more compact, and there is less risk that delamination and deformation will occur due to environmental changes. In addition, the composite floor of the present invention has a low coefficient of expansion, a low coefficient of shrinkage, excellent performance and a long service life.
    COMPOSITE FLOOR AND MANUFACTURING METHOD THEREOF
    The invention relates to the technological field of floors and, more particularly, that of composite floors and their manufacturing process.
    A polyvinyl chloride (PVC) floor is the floor made using polyvinyl chloride as the main raw material and adding other materials such as fillers, plasticizers, stabilizers, dyes, etc. The conventional PVC floor has multilayer structures, generally comprising a wear-resistant layer, a layer of printing film, a layer of intermediate material, a support layer, etc. The intermediate material layer and the support layer of the PVC floor are usually of high density, the floor is therefore relatively heavy, which makes its use impractical. A wood / plastic composite floor (WPC) usually includes a surface layer, a layer of foam material and a layer of sound insulation. The layer of foam material is made of low density foam material. Therefore, the total weight of the WPC floor is relatively light. Layers of existing WPC floors are generally bonded, which promotes poor bonding, and leads to complex manufacturing processes and higher labor costs. During the process of use, due to the temperature and humidity of the environment, the adhesive between each layer is likely to lose its effectiveness and to come off. In addition, the WPC floor does not withstand high temperatures and begins to deform when they exceed 50 ° C. A distortion of ^ 2 mm makes the floor unsuitable for continuous use and shortens the service life.
    To solve the above problems, an object of the present invention is to provide a composite floor and an associated manufacturing method. The composite floor is light in weight, resistant to high temperatures, less likely to delaminate, less likely to deform, and to have a long service life.
    To achieve the above objective, the present invention relates to a composite floor, comprising a compression molded coextrusion layer using a coextrusion process. The coextrusion layer comprises a first polyvinyl chloride (PVC) equilibrium layer, a composite wood / plastic cellular layer (WPC), and a second PVC equilibrium layer arranged in order from top to bottom.
    In an embodiment of the present invention, the coextrusion layer can further comprise a sound insulation layer, which can be arranged under the second PVC equilibrium layer.
    In an embodiment of the present invention, a print film layer and a wear-resistant layer may further be included. The printing film layer can be arranged on the first PVC balance layer, and the wear-resistant layer can be arranged on the printing film layer.
    In one embodiment of the present invention, the first PVC balance layer and the second PVC balance layer can be made of identical materials. The first PVC balance layer can be made of the following raw materials, in parts by weight: PVC 20 to 30 parts, calcium carbonate 65 to 75 parts, calcium-zinc stabilizer 1 to 3 parts, chlorinated polyethylene 1 to 3 parts, acrylic ester 0.5 to
    1.5 parts, PE wax 0.1 to 0.5 parts, stearic acid 0.1 to 0.5 parts and carbon black 0.1 to 0.5 parts.
    In an embodiment of the present invention, the cellular layer in WPC can be made of the following raw materials, in parts by weight: polyvinyl chloride 35 to 55 parts, stone powder 40 to 50 parts, calcium-zinc stabilizer 2 3 parts, internal lubricant for PVC 0.2 to 0.6 parts, external lubricant for PVC 0.1 to 0.4 parts, acrylic ester 3 to 5 parts, homopolymer of oxidized polyethylene 0.1 to 0.4 parts, sodium bicarbonate 0.1 to 0.4 part,
    2,2-azobisisobutyronitrile 0.1 to 0.4 parts and chlorinated poly (vinyl chloride) 1 to 2 parts.
    The present invention further relates to a method of manufacturing the composite floor, comprising the following steps:
    : respectively mix the raw materials of the equilibrium layers in PVC and the raw materials of the cellular layer in WPC;
    : extrude the raw materials from the honeycomb layer in WPC in one layer, and extrude the raw materials from the PVC balance layers in two layers, namely the first PVC balance layer and the second PVC balance layer , the first equilibrium layer - in PVC being extruded on the alveolar layer in WPC, the second equilibrium layer in PVC being extruded under the alveolar layer in WPC, and the first equilibrium layer in PVC, the alveolar layer in WPC and the second equilibrium layer in PVC forming a semi-finished product of the coextrusion layer; and
    S3: move the semi-finished product from the coextrusion layer so that it is between two pressure rollers arranged face to face for compression molding, a pressure roller temperature ranging from 180 ° C to 210 ° C, and a space between the two pressure rollers corresponding to the thickness of the semi-finished product of the coextrusion layer from which 0.7 mm to 1.3 mm has been subtracted.
    In one embodiment of the present invention, a speed of movement of the semi-finished product of the coextrusion layer can be in the plate from 0.5 m / min to 1.5 m / min.
    In an embodiment of the present invention, step S1 may further comprise preheating the mixed raw materials of the PVC equilibrium layers at a temperature of 170 ° C to 190 ° C, and preheating the mixed raw materials of the honeycomb layer in WPC at a temperature of 170 ° C to 190 ° C.
    In one embodiment of the present invention, the step S1 may further comprise mixing the raw materials with a sound insulation layer; and step S2 may further comprise the extrusion of the raw materials from the sound insulation layer so that they are under the second equilibrium layer of PVC. The sound insulation layer, the first equilibrium layer in _PVC, the cellular layer in WPC and the second equilibrium layer in PVC can form the semi-finished product of the coextrusion layer.
    In one embodiment of the present invention, the PVC balance layers can be made of the following raw materials, in parts by weight: PVC 20 to 30 parts, calcium carbonate 65 to 75 parts, calcium-zinc stabilizer 1 3 parts, chlorinated polyethylene 1 to 3 parts, acrylic ester 0.5 to 1.5 parts, PE wax 0.1 to 0.5 parts, stearic acid 0.1 to 0.5 parts and carbon black 0, 1 to 0.5 part. The honeycomb layer in WPC can be made of the following raw materials, in parts by weight: polyvinyl chloride 35 to 55 parts, stone powder 40 to 50 parts, calcium-zinc stabilizer 2 to 3 parts, internal lubricant for PVC 0, 2 to 0.6 parts, external lubricant for PVC 0.1 to 0.4 parts, acrylic ester 3 to 5 parts, homopolymer of oxidized polyethylene 0.1 to 0.4 parts, sodium bicarbonate 0.1 to 0.4 part, 2,2-azobisisobutyronitrile 0.1 to 0.4 part and chlorinated poly (vinyl chloride) 1 to 2 parts.
    Compared to the state of the art, the beneficial effects of this technical solution are as follows.
    In the composite floor according to the present invention, the cellular layer of WPC is used as the main material layer, which has reduced the total weight of the floor; and the first PVC balance layer and the second PVC balance layer are arranged respectively on both sides of the WPC foam layer so that the performance of the composite floor is more stable. By avoiding the use of glue for bonding, adopting the coextrusion process for compression molding is more environmentally friendly and the manufacturing process is simpler. The use of the coextrusion process makes the bonding of the various layers more compact, and there is less risk that delamination and deformation will occur due to environmental changes. In addition, the composite floor of the present invention has a low coefficient of expansion, a low coefficient of shrinkage, excellent performance and a long service life.
    FIG. 1 is a schematic structural diagram of a composite floor according to an embodiment of the present invention; and FIG. 2 is a schematic diagram of the extrusion of a semi-finished product from the coextrusion layer by a pair of pressure rollers in a process for manufacturing the composite floor.
    The technical solutions of the present invention are described clearly and entirely below by means of specific embodiments and with reference to the accompanying drawings.
    Regarding FIG. 1, the present invention relates to a composite floor, which comprises a coextrusion layer (1) molded by compression by a coextrusion process. The coextrusion layer (1) comprises a first polyvinyl chloride (PVC) equilibrium layer (11), a composite wood / plastic (WPC) cellular layer (12), and a second PVC equilibrium layer ( 13) arranged in this order from top to bottom. The first PVC equilibrium layer (J. 1) and the second PVC equilibrium layer (13) respectively enclose the WPC honeycomb layer (12) on both sides of the WPC honeycomb layer (12) so that the composite floor has more stable performance. In another embodiment, the coextrusion layer (1) further comprises a sound insulation layer (14), which is arranged under the second PVC equilibrium layer (13). The sound insulation layer (14) arranged under the second PVC balance layer (3) can have the effect of reducing noise so that the composite floor is more applicable to indoor environments. The sound insulation layer (14) is made of IXPE materials (polyethylene foam with electronic crosslinking).
    The composite floor further includes a layer of printing film (2) and a wear-resistant layer (3). The printing film layer (2) is arranged on the first PVC balance layer (11), and the wear-resistant layer (3) is arranged on the printing film layer (2).
    The first PVC balance layer (11) and the second PVC balance layer (13) are made of identical materials. The first PVC balance layer is made of the following raw materials, in parts by weight: PVC 20 to 30 parts, calcium carbonate 65 to 75 parts, calcium-zinc stabilizer 1 to 3 parts, chlorinated polyethylene 1 to 3 parts , acrylic ester 0.5 to
    1.5 parts, PE wax 0.1 to 0.5 parts, stearic acid 0.1 to 0.5 parts and carbon black 0.1 to 0.5 parts.
    The honeycomb layer in WPC can be made of the following raw materials, in parts by weight: polyvinyl chloride 35 to 55 parts, stone powder 40 to 50 parts, calcium-zinc stabilizer 2 to 3 parts, internal lubricant for PVC 0, 2 to 0.6 part, external lubricant for PVC 0.1 to 0.4 part, acrylic ester 3 to parts, homopolymer of oxidized polyethylene 0.1 to
    0.4 part, sodium bicarbonate 0, 1
    0.4 part,
    2,2-azobisisobutyronitrile
    0.1
    0.4 parts and chlorinated poly (vinyl chloride) parts. The internal lubricant for PVC uses a polyhydroxy alcohol ester having the types of G16,
    ZB60, OA6 or
    70S. The external lubricant for PVC uses acrylic polymers having the types of ZB74, ZB175, ZB101 or G74.
    The above composite floor manufacturing process includes the following steps:
    SI: respectively mix the raw materials of the equilibrium layers in PVC and the raw materials of the cellular layer in WPC. The PVC balance layers are made of the following raw materials, in parts by weight: PVC 20 to 30 parts, calcium carbonate 65 to 75 parts, calcium-zinc stabilizer 1 to 3 parts, chlorinated polyethylene 1 to 3 parts, acrylic ester 0.5 to 1.5 parts, PE wax 0.1 to 0.5 parts, stearic acid 0.1 to 0.5 parts and carbon black 0.1 to
    0, 5 part. The honeycomb layer in WPC can be made of the following raw materials, in parts by weight: polyvinyl chloride 35 to 55 parts, stone powder to 50 parts, calcium-zinc stabilizer 2 to 3 parts, internal lubricant for PVC 0.2 to 0.6 part, external lubricant for PVC 0.1 to 0.4 part, acrylic ester 3 to parts, homopolymer of oxidized polyethylene 0.1 to
    0.4 part, sodium bicarbonate 0, 1 to 0.4 part,
    2,2-azobisisobutyronitrile
    0.1 to 0.4 part and chlorinated poly (vinyl chloride) 1 to 2 parts.
    : extrude the raw materials from the honeycomb layer in WPC in one layer, and extrude the raw materials from the PVC balance layers in two layers, namely the first PVC balance layer and the second PVC balance layer . The first PVC balance layer is extruded on the honeycomb layer in WPC and the second PVC balance layer is extruded on the honeycomb layer in WPC. The first balance layer in PVC, the honeycomb layer in WPC and the second balance layer in PVC form the semi-finished product of the coextrusion layer.
    : move the semi-finished product from the coextrusion layer (1 ') so that it is between two pressure rollers (4) arranged face to face for compression molding. A speed of movement of the semi-finished product of the coextrusion layer is in the range of 0.5 m / min to 1.5 m / min. Under the movement of the semi-finished product from the coextrusion layer (1 '), the two pressure rollers (4) rotate to extrude the semi-finished product from the coextrusion layer (1'), as shown in FIG. 2. A temperature of the pressure rollers ranges from 180 ° C to 210 ° C, and a space between the two pressure rollers corresponds to the thickness of the semi-finished product of the laguelle coextrusion layer, we have subtracted 0.7 mm at 1.3 mm.
    Furthermore, the process for manufacturing the composite floor further comprises preheating the mixed raw materials of the PVC equilibrium layers at a temperature of 170 ° C to 190 ° C, and preheating the mixed raw materials of the honeycomb layer WPC at a temperature of 170 ° C to 190 ° C.
    ίο
    In addition, for the composite floor provided with a soundproofing layer, step S1 further comprises mixing the raw materials of the soundproofing layer; and step S2 further comprises extruding the raw materials from the soundproofing layer so that they are under the second equilibrium layer of PVC. The sound insulation layer, the first equilibrium layer of PVC, the cellular layer of WPC and the second equilibrium layer of PVC form the semi-finished product of the coextrusion layer.
    Specific embodiments are described below.
    Embodiment 1
    A composite floor comprises a wear-resistant layer, a layer of printing film, a first equilibrium layer of PVC, a cellular layer of WPC and a second equilibrium layer of PVC arranged in order from top to bottom. low. The first PVC balance layer, the honeycomb layer in WPC and the second PVC balance layer are compression molded using a coextrusion process. Both the first PVC balance layer and the second PVC balance layer are made of the following raw materials, in parts by weight: PVC 20 parts, calcium carbonate 65 parts, calcium-zinc stabilizer 1 part, polyethylene 1 part chlorine, 0.5 part acrylic ester, 0.1 part PE wax, 0.1 part stearic acid and 0.1 part carbon black. The honeycomb layer in WPC is made of the following raw materials, in parts by weight: polyvinyl chloride 35 parts, stone powder 40 parts, calcium-zinc stabilizer 2 parts, internal lubricant for PVC
    0.2 part, external lubricant for PVC 0.1 part, acrylic ester 3 parts, homopolymer of oxidized polyethylene 0.1 part, sodium bicarbonate 0.1 part,
    2,2-azobisisobutyronitrile 0.1 part and chlorinated poly (vinyl chloride) 1 part.
    The above composite floor manufacturing process includes the following steps:
    : respectively mix the raw materials of the equilibrium layers in PVC and the raw materials of the cellular layer in MPC. The raw materials of the PVC balance layers, in parts by weight, are as follows: PVC 20 parts, calcium carbonate 65 parts, calcium-zinc stabilizer 1 part, chlorinated polyethylene 1 part, acrylic ester 0.5 part, 0.1 part PE wax, 0.1 part stearic acid and 0.1 part carbon black. The raw materials of the honeycomb layer in WPC, in parts by weight, are as follows: polyvinyl chloride 35 parts, stone powder 40 parts, calcium-zinc stabilizer 2 parts, internal lubricant for PVC 0.2 part, external lubricant for 0.1 part PVC, 3 part acrylic ester, 0.1 part oxidized polyethylene homopolymer, 0.1 part sodium bicarbonate, 0.1 part 2,2-azobisisobutyronitrile and 1 part chlorinated poly (vinyl chloride).
    : preheating the mixed raw materials of the honeycomb layer in WPC to 170 ° C, and extruding the raw materials of the honeycomb layer in WPC in one layer; and preheating the mixed raw materials of the PVC balance layers to 170 ° C, and extruding the raw materials of the PVC balance layers into two layers, namely the first PVC balance layer and the second PVC balance. The first PVC balance layer is extruded on the honeycomb layer in WPC, and the second PVC balance layer is extruded on the honeycomb layer in WPC. The first balance layer in PVC, the cellular layer in WPC and the second balance layer in PVC form the semi-finished product in coextrusion layer.
    : move the semi-finished product in coextrusion layer at the speed of 0.5 m / min so that it is between two pressure rollers arranged face to face for compression molding. The temperature of the pressure rollers is 180 ° C., and the space between the two pressure rollers represents the thickness of the semi-finished product in coextrusion layer from which 1.3 mm has been subtracted.
    : obtain the composite floor by gluing the layer of printing film and the wear-resistant layer in this order on the first PVC equilibrium layer.
    Embodiment 2
    A composite floor includes a wear-resistant layer, a layer of printing film, a first equilibrium layer of PVC, a cellular layer of WPC, a second equilibrium layer of PVC and a sound insulation layer arranged in this order from top to bottom. The first PVC balance layer, the WPC honeycomb layer, the second PVC balance layer and the sound insulation layer are compression molded using a coextrusion process. Both the first PVC balance layer and the second PVC balance layer are made of the following raw materials, in parts by weight: PVC 30 parts, calcium carbonate parts, calcium-zinc stabilizer 3 parts, chlorinated polyethylene 3 parts, 1.5 part acrylic ester, 0.5 part PE wax, 0.5 part stearic acid and 0.5 part carbon black. The honeycomb layer in WPC is made of the following raw materials, in parts by weight: polyvinyl chloride 55 parts, stone powder 50 parts, calcium-zinc stabilizer 3 parts, internal lubricant for PVC 0, 6 parts, external lubricant for PVC 0.4 part, 5 part acrylic ester, 0.4 part oxidized polyethylene homopolymer, 0.4 part sodium bicarbonate, 0.4 part 2.2-azobisisobutyronitrile and 2 part chlorinated poly (vinyl chloride). The sound insulation layer is made of IXPE materials.
    The above composite floor manufacturing process includes the following steps:
    SI: respectively mix the raw materials of the PVC equilibrium layers, the raw materials of the cellular layer in WPC and the raw materials of the sound insulation layer. The raw materials for the PVC balance layers, in parts by weight, are as follows: PVC 30 parts, calcium carbonate 75 parts, calcium-zinc stabilizer 3 parts, chlorinated polyethylene 3 parts, acrylic ester 1.5 parts, 0.5 part PE wax, 0.5 part stearic acid and 0.5 part carbon black. The raw materials of the honeycomb layer in WPC, in parts by weight, are as follows: polyvinyl chloride 55 parts, stone powder 50 parts, calcium-zinc stabilizer 3 parts, internal lubricant for PVC 0, 6 parts, external lubricant for 0.4 part PVC, 5 part acrylic ester, 0.4 part oxidized polyethylene homopolymer, 0.4 part sodium bicarbonate, 0.4 part 2,2-azobisisobutyronitrile and 2 part chlorinated poly (vinyl chloride). The raw materials for the soundproofing layer are IXPE materials.
    : preheating the mixed raw materials of the honeycomb layer in WPC to 170 ° C, and extruding the raw materials of the honeycomb layer in WPC in one layer; and preheating the mixed raw materials of the PVC balance layers to 170 ° C, and extruding the raw materials of the PVC balance layers into two layers, namely the first PVC balance layer and the second PVC balance. The first PVC balance layer is extruded on the honeycomb layer in WPC, and the second PVC balance layer is extruded on the honeycomb layer in WPC. The raw materials of the soundproofing layer are preheated to 170 ° C and are extruded under the second PVC equilibrium layer. The first equilibrium layer in PVC, the cellular layer in WPC, the second equilibrium layer in PVC and the sound insulation layer form the semi-finished product as a coextrusion layer.
    : move the semi-finished product in coextrusion layer at the speed of 0.5 m / min so that it is between two pressure rollers arranged face to face for compression molding. The temperature of the pressure rollers is 180 ° C., and the space between the two pressure rollers represents the thickness of the semi-finished product in coextrusion layer from which 1.3 mm has been subtracted.
    S4: obtain the composite floor by gluing the layer of printing film and the wear-resistant layer in this order on the first PVC equilibrium layer.
    Embodiment 3
    A composite floor comprises a wear-resistant layer, a layer of printing film, a first equilibrium layer of PVC, a cellular layer of WPC and a second equilibrium layer of PVC arranged in order from top to bottom. low. The first PVC balance layer, the honeycomb layer in WPC and the second PVC balance layer are compression molded using a coextrusion process. Both the first PVC equilibrium layer and the second PVC equilibrium layer are made of the following raw materials, in parts by weight: PVC 23 parts, calcium carbonate 68 parts, calcium-zinc stabilizer 2 parts, polyethylene chlorinated 1 part, acrylic ester 0.8 part, PE wax 0.2 part, stearic acid 0.3 part and carbon black 0.2 part. The honeycomb layer in WPC is made of the following raw materials, in parts by weight: polyvinyl chloride 40 parts, stone powder 42 parts, calcium-zinc stabilizer 2 parts, internal lubricant for PVC 0.3 part, external lubricant for PVC 0.3 part, 4 part acrylic ester, 0.2 part oxidized polyethylene homopolymer, 0.2 part sodium bicarbonate,
    2,2-azobisisobutyronitrile 0.2 part and chlorinated poly (vinyl chloride) 1 part.
    The above composite floor manufacturing process includes the following steps:
    SI: respectively mix the raw materials of the equilibrium layers in PVC and the raw materials of the cellular layer in WPC. The raw materials for the PVC balance layers, in parts by weight, are as follows: PVC 23 parts, calcium carbonate 68 parts, calcium-zinc stabilizer 2 parts, chlorinated polyethylene 1 part, acrylic ester 0.8 parts, 0.2 part PE wax, 0.3 part stearic acid and 0.2 part carbon black. The raw materials of the honeycomb layer in WPC, in parts by weight, are as follows: polyvinyl chloride 40 parts, stone powder 42 parts, calcium-zinc stabilizer 2 parts, internal lubricant for PVC 0.3 part, external lubricant for 0.3 part PVC, 4 part acrylic ester, 0.2 part oxidized polyethylene homopolymer, 0.2 part sodium bicarbonate, 0.2 part 2.2-azobisisobutyronitrile and 1 part chlorinated poly (vinyl chloride).
    : preheating the mixed raw materials of the honeycomb layer in WPC to 180 ° C, and extruding the raw materials of the honeycomb layer in WPC in one layer; and preheating the mixed raw materials of the PVC balance layers to 180 ° C, and extruding the raw materials of the PVC balance layers into two layers, namely the first PVC balance layer and the second PVC balance. The first PVC balance layer is extruded on the honeycomb layer in WPC and the second PVC balance layer is extruded on the honeycomb layer in WPC. The first balance layer in PVC, the cellular layer in WPC and the second balance layer in PVC form the semi-finished product in coextrusion layer.
    : move the semi-finished product in coextrusion layer at the speed of 0.8 m / min so that it is between two pressure rollers arranged face to face for compression molding. The temperature of the pressure rollers is 190 ° C., and the space between the two pressure rollers represents the thickness of the semi-finished product in coextrusion layer from which 1.1 mm has been subtracted.
    S4: obtain the composite floor by gluing the layer of printing film and the wear-resistant layer in this order on the first PVC equilibrium layer.
    Embodiment 4
    A composite floor comprises a wear-resistant layer, a layer of printing film, a first equilibrium layer of PVC, a cellular layer of WPC and a second equilibrium layer of PVC arranged in order from top to bottom. low. The first PVC balance layer, the honeycomb layer in WPC and the second PVC balance layer are compression molded using a coextrusion process. Both the first PVC balance layer and the second PVC balance layer are made from the following raw materials, in parts by weight: PVC 25 parts, calcium carbonate 70 parts, calcium-zinc stabilizer 2 parts, polyethylene chlorinated 2 parts, acrylic ester 1 part, PE wax 0.3 part, stearic acid 0.3 part and carbon black 0.4 part. The honeycomb layer in WPC is made of the following raw materials, in parts by weight: polyvinyl chloride 40 parts, stone powder 45 parts, calcium-zinc stabilizer 3 parts, internal lubricant for PVC 0.4 part, external lubricant for PVC 0.3 part, 4 part acrylic ester, 0.3 part oxidized polyethylene homopolymer, 0.3 part sodium bicarbonate,
    2,2-azobisisobutyronitrile 0, 3 parts and chlorinated poly (vinyl chloride) 2 parts.
    The above composite floor manufacturing process includes the following steps:
    : respectively mix the raw materials of the equilibrium layers in PVC and the raw materials of the cellular layer in WPC. The raw materials for the PVC balance layers, in parts by weight, are as follows: PVC 25 parts, calcium carbonate 70 parts, calcium-zinc stabilizer 2 parts, chlorinated polyethylene 2 parts, acrylic ester 1 part, 0.3 part PE, 0.3 part stearic acid and 0.4 part carbon black. The raw materials of the honeycomb layer in WPC, in parts by weight, are as follows: polyvinyl chloride 40 parts, stone powder 45 parts, calcium-zinc stabilizer 3 parts, internal lubricant for PVC 0.4 part, external lubricant for 0.3 part PVC, 4 part acrylic ester, 0.3 part oxidized polyethylene homopolymer, 0.3 part sodium bicarbonate, 0.3 part 2.2-azobisisobutyronitrile and 2 part chlorinated poly (vinyl chloride).
    : preheating the mixed raw materials of the honeycomb layer in WPC to 190 ° C, and extruding the raw materials of the honeycomb layer in WPC in one layer; and preheating the mixed raw materials of the PVC balance layers to 190 ° C, and extruding the raw materials of the PVC balance layers into two layers, namely the first PVC balance layer and the second layer of PVC balance. The first PVC balance layer is extruded on the honeycomb layer in WPC, and the second PVC balance layer is extruded on the honeycomb layer in WPC. The first balance layer in PVC, the cellular layer in WPC and the second balance layer in PVC form the semi-finished product in coextrusion layer.
    : move the semi-finished product in coextrusion layer at the speed of 1.0 m / min so that it is between two pressure rollers arranged face to face for compression molding. The temperature of the pressure rollers is 210 ° C., and the space between the two pressure rollers represents the thickness of the semi-finished product in laguelle coextrusion layer, 0.9 mm has been subtracted.
    : obtain the composite floor by sticking the layer of printing film and the wear-resistant layer in this order on the first PVC equilibrium layer.
    Embodiment 5
    A composite floor comprises a wear-resistant layer, a layer of printing film, a first equilibrium layer of PVC, a cellular layer of WPC and a second equilibrium layer of PVC arranged in order from top to bottom. low. The first PVC balance layer, the WPC honeycomb layer and the second PVC balance layer are compression molded using a coextrusion process. Both the first PVC balance layer and the second PVC balance layer are made of the following raw materials, in parts by weight: PVC 28 parts, calcium carbonate 72 parts, calcium-zinc stabilizer 2 parts, polyethylene chlorinated 3 parts, acrylic ester 1.5 parts, PE wax 0.4 parts, stearic acid 0.4 parts and carbon black 0.3 parts. The honeycomb layer in WPC is made of the following raw materials, in parts by weight: polyvinyl chloride 45 parts, stone powder 45 parts, calcium-zinc stabilizer 3 parts, internal lubricant for PVC 0.5 part, external lubricant for PVC 0.3 part, acrylic ester 5 parts, homopolymer of oxidized polyethylene 0.4 part, sodium bicarbonate 0.4 part,
    2,2-azobisisobutyronitrile 0.4 part and chlorinated poly (vinyl chloride) 2 parts.
    The above composite floor manufacturing process includes the following steps:
    : respectively mix the raw materials of the equilibrium layers in PVC and the raw materials of the cellular layer in WPC. The raw materials for the PVC balance layers, in parts by weight, are as follows: PVC 28 parts, calcium carbonate 72 parts, calcium-zinc stabilizer 2 parts, chlorinated polyethylene 3 parts, acrylic ester 1.5 parts, PE wax 0.4 part, stearic acid 0.4 part and carbon black 0.3 part. The raw materials of the honeycomb layer in WPC, in parts by weight, are as follows: polyvinyl chloride 45 parts, stone powder 45 parts, calcium-zinc stabilizer 3 parts, internal lubricant for PVC 0.5 part, external lubricant for 0.3 part PVC, 5 part acrylic ester, 0.4 part oxidized polyethylene homopolymer, 0.4 part sodium bicarbonate, 0.4 part 2.2-azobisisobutyronitrile and 2 part chlorinated poly (vinyl chloride).
    : preheating the mixed raw materials of the honeycomb layer in WPC to 185 ° C, and extruding the raw materials of the honeycomb layer in WPC in one layer; and preheating the mixed raw materials of the PVC balance layers to 185 ° C, and extruding the raw materials of the PVC balance layers into two layers, namely the first PVC balance layer and the second PVC balance. The first PVC balance layer is extruded on the honeycomb layer in WPC, and the second PVC balance layer is extruded on the honeycomb layer in WPC. The first balance layer in PVC, the cellular layer in WPC and the second balance layer in PVC form the semi-finished product in coextrusion layer.
    : move the semi-finished product into a coextrusion layer at a speed of 1.5 m / min so that it is between two pressure rollers arranged face to face for compression molding. The temperature of the pressure rollers is 200 ° C., and the space between the two pressure rollers represents the thickness of the semi-finished product in coextrusion layer from which 0.7 mm has been subtracted.
    : Get the composite floor by gluing the film layer 1 and the print-resistant layer 1 worn in this order on the first layer of PVC balance.
    Comparative example 1
    The materials of various layers of the composite floor of Comparative Example 1 are the same as those of Embodiment 1. However, compression molding by the coextrusion process is not used. Each layer is individually molded by compression, then the various layers are bonded.
    Performance tests are carried out on the composite floors of embodiments 1 to 5 and of comparative example 1, and the coefficient of expansion, the shrinkage coefficient and the deformation of the composite floors are detected in accordance with standard EN434, the detection results being as shown in Table 1 below.
    Table 1
    Coefficient Coeffi Distortedis from cient of ationdilation withdrawalMode of 0.10% 0.08% 1 mm achievement 1 Mode of 0.07% 0.06% 0.8mm achievement 2 Mode of 0.06% 0.06% 0.9mm achievement 3 Mode of 0.09% 0.07% 0.8mm achievement 4 Mode of 0.07% 0.06% 1.2mm achievement 5 Example 0.20% 0.15% 2.5mm comparison 1
    As can be seen, the composite floor of the present invention has a low coefficient of expansion, a low shrinkage coefficient, resistance to high temperatures, low deformation, stable performance and a long service life.
    Even though the present invention has been described by preferred embodiments, these are not used to limit the present invention. Those skilled in the art should understand that possible changes and modifications may be made to the technical solution of the present invention, without departing from the spirit and scope of the present invention, using the methods and contents. techniques described above. Therefore, any simple modification, equivalent change and improvement of the above embodiments, which do not depart from the content of the technical solution of the present invention, according to the technical concept of the present invention, are all within the scope of protection of the technical solution of the present invention.
    权利要求:
    Claims (12)
    [1" id="c-fr-0001]
    1. Composite floor, comprising a coextrusion layer (1) molded by a coextrusion process, in which the coextrusion layer comprises a first equilibrium layer of polyvinyl chloride (PVC) (11), a composite honeycomb layer of wood / plastic (WPC) (12), and a second PVC balance layer (13) arranged in this order from top to bottom.
    [2" id="c-fr-0002]
    2. Composite floor according to claim 1, in which the coextrusion layer (1) further comprises a sound insulation layer (14) arranged under the second PVC equilibrium layer (13).
    [3" id="c-fr-0003]
    3. The composite floor according to claim 1, further comprising a layer of printing film (2) and a wear-resistant layer (3), in which the layer of printing film (2) is arranged on the first PVC balance layer (11), and the wear-resistant layer (3) is arranged on the printing film layer (2).
    [4" id="c-fr-0004]
    4. Composite floor according to claim 1, wherein the first PVC balance layer (11) and the second PVC balance layer (13) are made of identical materials, the first PVC balance layer (11 ) is made, in parts by weight, of the following raw materials: PVC 20 to 30 parts, calcium carbonate 65 to 75 parts, calcium-zinc stabilizer 1 to 3 parts, chlorinated polyethylene 1 to 3 parts, acrylic ester 0.5 to 1.5 parts, PE wax 0.1 to 0.5 parts, stearic acid 0.1 to 0.5 parts and carbon black 0.1 to
    0.5 part.
    [5" id="c-fr-0005]
    5. Composite floor according to claim 1, in which the cellular layer in WPC (12) is made of the following raw materials, in parts by weight: polyvinyl chloride 35 to 55 parts, stone powder
    40 to 50 parts, calcium-zinc stabilizer 2 to 3 parts, internal lubricant for PVC 0.2 to 0.6 part, external lubricant for PVC 0.1 to 0.4 part, acrylic ester 3 to
    5 parts, homopolymer of oxidized polyethylene 0.1 to
    0.4 part, sodium bicarbonate 0.1 to 0.4 part,
    2,2-azobisisobutyronitrile
    0.1 to 0.4 part and chlorinated poly (vinyl chloride) 1 to 2 parts.
    [6" id="c-fr-0006]
    6. A method of manufacturing the composite floor according to claim 1, comprising the following steps:
    SI: respectively mix the raw materials of the PVC equilibrium layers (11, 13) and the raw materials of the cellular layer in WPC (12);
    S2: extrude the cellular WPC (12) raw materials from the layer in one layer, and extrude the raw materials from the PVC balance layers (11, 13) into two layers, namely the first PVC balance layer (11) and the second PVC equilibrium layer (13), the first PVC equilibrium layer (11) being extruded on the alveolar WPC layer (12), the second PVC equilibrium layer (13) being extruded under the honeycomb layer in WPC (12), and the first equilibrium layer in PVC (11), the honeycomb layer in WPC (12) and the second equilibrium layer in PVC (13) forming a semi-finished product finished in coextrusion layer; and
    S3: move the semi-finished product into a coextrusion layer so that it is between two pressure rollers arranged face to face for compression molding, a temperature of the pressure rolls ranging from 180 ° C to 210 ° C, and a space between the two pressure rollers representing a thickness of the semi-finished product in coextrusion layer from which 0.7 mm to 1.3 mm has been subtracted.
    [7" id="c-fr-0007]
    The manufacturing method according to claim 6, wherein a speed of movement of the semi-finished product in coextrusion layer is in the range of 0.5 m / min to 1.5 m / min.
    [8" id="c-fr-0008]
    8. The manufacturing method according to claim 6, in which step S1 further comprises preheating the mixed raw materials of the PVC equilibrium layers (11, 13) at a temperature of 170 ° C to 190 ° C, and preheating the mixed raw materials of the honeycomb layer in WPC (12) at a temperature of 170 ° C to 190 ° C.
    [9" id="c-fr-0009]
    9. The manufacturing method according to claim 6, wherein step S1 further comprises mixing the raw materials with a sound insulation layer (14); and step S2 further comprises extruding the raw materials from the soundproofing layer (14) so that they are under the second PVC equilibrium layer (13), the soundproofing layer ( 14), the first equilibrium layer of PVC (11), the cellular layer of WPC (12) and the second equilibrium layer of PVC (13) forming the semi-finished product as a coextrusion layer.
    [10" id="c-fr-0010]
    10. The manufacturing method according to claim 6, wherein the PVC equilibrium layers (
    [11" id="c-fr-0011]
    11, 13) are made of the following raw materials, in parts by weight: PVC 20 to 30 parts, calcium carbonate 65 to 5 75 parts, calcium-zinc stabilizer 1 to 3 parts, chlorinated polyethylene 1 to 3 parts, acrylic ester 0.5 to
    1.5 parts, PE wax 0.1 to 0.5 parts, stearic acid 0.1 to 0.5 parts, and carbon black 0.1 to 0.5 parts; and the honeycomb layer in WPC (12) is made of the following raw materials, in parts by weight: polyvinyl chloride 35 to 55 parts, stone powder 40 to 50 parts, calcium-zinc stabilizer 2 to 3 parts, internal lubricant for PVC 0.2 to 0.6 part, external lubricant for PVC 0.1 to 0.4 part, acrylic ester 3 to 5 parts, homopolymer of oxidized polyethylene 0.1 to 0.4 part, sodium bicarbonate 0, 1 to 0.4 part,
    2,2-azobisisobutyronitrile 0.1 to 0.4 parts and chlorinated poly (vinyl chloride) 1 to 2 parts.
    I
    1/1
    [12" id="c-fr-0012]
    12 1
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    同族专利:
    公开号 | 公开日
    DE102017118688B4|2019-05-29|
    CA2976555C|2019-12-31|
    WO2018133188A1|2018-07-26|
    DE102017118688A1|2018-07-26|
    CN106836712A|2017-06-13|
    FR3062082B1|2021-12-17|
    CA2976555A1|2018-07-23|
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    法律状态:
    2018-08-30| PLFP| Fee payment|Year of fee payment: 2 |
    2019-08-30| PLFP| Fee payment|Year of fee payment: 3 |
    2020-08-31| PLFP| Fee payment|Year of fee payment: 4 |
    2021-06-04| PLSC| Publication of the preliminary search report|Effective date: 20210604 |
    2021-08-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-09-24| CD| Change of name or company name|Owner name: ZHEJIANG KINGDOM NEW MATERIAL GROUP CO., LTD., CN Effective date: 20210817 |
    2021-09-24| CA| Change of address|Effective date: 20210817 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201710050874.1A|CN106836712A|2017-01-23|2017-01-23|Composite floor board and preparation method thereof|
    CN2017100508741|2017-01-23|
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