CN111139992B

CN111139992B - Floor capable of preventing water accumulation

Info

Publication number: CN111139992B
Application number: CN201911309538.XA
Authority: CN
Inventors: 唐道远; 邓少华
Original assignee: Anhui Sentai Wpc Group Co ltd
Current assignee: Anhui Sentai Wpc Group Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-07-17
Anticipated expiration: 2039-12-18
Also published as: CN111139992A; WO2021120442A1

Abstract

The invention relates to a wood-plastic floor, in particular to a wood-plastic floor with a water accumulation prevention function. Belongs to the technical field of wood-plastic floors. The floor comprises a surface plate, a plurality of supporting plates and a plurality of pressure-bearing bottom plates, wherein the surface plate and the pressure-bearing bottom plates are integrally connected through the supporting plates; the surface layer plate forms the continuous upper surface of the floor, and vacant areas are arranged among the pressure-bearing bottom plates, so that the pressure-bearing bottom plates form the discontinuous lower bottom surface of the floor. The floor provided by the invention adopts wood plastic as a main component, and the floor is designed into a special structure, so that the floor has the advantages of proper weight, good strength and no water accumulation inside the floor.

Description

Floor capable of preventing water accumulation

Technical Field

The invention relates to a wood-plastic floor, in particular to a wood-plastic floor with a water accumulation prevention function. Belongs to the technical field of wood-plastic floors.

Background

Due to the facts that the wood floor is easy to absorb water, the dimensional stability is changed after water absorption, the wood floor is easy to warp after being dried in the sun or dried in the air, and the like, the use of the wood floor in the open air is very limited. And therefore outdoor floors are usually dominated by wood-plastic floors.

Wood-plastic floors also suffer from various problems when used outdoors. For example, the wood-plastic floor has a larger density, and if the wood-plastic floor is made into a solid plate, the overall mass of the floor is larger, and the wood-plastic floor also has more materials, is relatively heavy and has high cost. If the hollow structure is manufactured, when the outdoor water-saving device is used outdoors, water is easy to accumulate in the hollow structure, so that various problems are caused.

For example, the patent of the Chinese utility model with the publication number of 207794537U discloses a wood-plastic floor. The floor comprises a floor body, wherein wave-shaped anti-skidding lines and a water flowing groove are arranged at the top of the floor body, the wave-shaped anti-skidding lines are communicated with the water flowing groove, a drainage cavity is arranged at the bottom of the floor body, a drainage hole is formed in the water flowing groove, and the water flowing groove is communicated with the drainage cavity through the drainage hole. The floor board has a complex structure, and the wavy drainage cavity is difficult to manufacture in the actual production process.

Disclosure of Invention

The invention aims to solve the problems and provide the floor capable of preventing water accumulation. The floor is made of wood-plastic materials as main materials, has proper weight and strength, and can not accumulate water inside the floor.

The technical scheme for solving the problems is as follows:

the floor comprises a surface plate, a plurality of supporting plates and a plurality of pressure-bearing bottom plates, wherein the surface plate and the pressure-bearing bottom plates are integrally connected through the supporting plates; the surface layer plate forms the continuous upper surface of the floor, and vacant areas are arranged among the pressure-bearing bottom plates, so that the pressure-bearing bottom plates form the discontinuous lower bottom surface of the floor.

According to the technical scheme, the lower bottom surface of the floor is designed to be of a discontinuous structure, so that accumulated water in the floor can be effectively led out. And due to the existence of the supporting plate and the pressure-bearing bottom plate, the whole floor still forms a stable stress structure.

Preferably, the surface plate, the two adjacent support plates and the two adjacent pressure-bearing bottom plates form a non-closed cavity in a surrounding mode, and the cavity is communicated with the external environment through the vacant areas.

Preferably, the lower surface of the surface plate, the side surface of the support plate, and the outer peripheral surface of the pressure-receiving bottom plate together constitute the lower surface of the floor panel.

Preferably, the floor further comprises recessed portions provided at both side ends of the floor.

Preferably, the thickness of the invagination part is larger than that of the cavity, so that the surface plate part corresponding to the invagination part has a thinner plate surface.

Preferably, the thickness of the invagination part is smaller than that of the cavity, so that the surface plate part corresponding to the invagination part has a thicker plate surface.

Preferably, the floor panel further comprises a co-extruded layer co-extruded on the skin sheet.

In the technical scheme of the invention, the co-extrusion layer can be made of other materials, such as ASA, so that the surface performance of the floor can be effectively improved. The co-extrusion layer can also be made of new materials, and the surface layer plate, the supporting plates and the pressure-bearing bottom plates are all made of recycled materials, so that the production cost can be obviously reduced while the quality is ensured. Not all panels can be made from recycled materials, but generally panels with a stable structure, such as solid panels, are available. The invention can also make the floor with stable structure by using the recycled materials because the surface plate, the plurality of supporting plates and the plurality of bearing bottom plates form the self-stabilizing supporting structure similar to a bridge.

Another object of the invention is to provide a method for manufacturing the above floor.

The technical scheme is as follows:

the preparation method of the floor board for preventing water accumulation comprises an extrusion molding process, wherein a die orifice of a die used in the extrusion molding process is matched with the cross section shape of the floor board; in the die cavity of the die used in the extrusion molding process, the die cavity space distributed by the material flow corresponding to the surface plate is smaller than the die cavity space distributed by the material flow corresponding to the supporting plate and the pressure-bearing bottom plate.

Because the upper surface and the lower surface of the floor board are obviously different, the upper surface is a flat surface, and the lower surface is a surface with a complex structure; their specific surface areas differ greatly. This creates great difficulties in production. In the production process, the upper surface of the floor comes out quickly, and the lower surface of the floor is extruded at a low speed; this causes the floor to bend downward after being extruded from the die, even if the lower half of the floor is not smoothly extruded and remains in the die, which is equivalent to the upper half of the floor produced by light, and the lower half of the floor disappears. In order to solve the problem, in the technical scheme of the invention, the runner of the die is improved, so that the die cavity space distributed by the material flow corresponding to the surface plate is smaller than the die cavity space distributed by the material flow corresponding to the supporting plate and the pressure-bearing bottom plate. The invention limits the die cavity space distributed by the material flow corresponding to the surface plate in advance, and uses smaller material flow to supply the requirement generated by the surface plate, thereby effectively reducing the plate discharging speed of the upper half part of the floor and leading the plate discharging speeds of the upper half part and the lower half part of the floor to tend to be consistent; thereby solving the above problems.

Preferably, in the extrusion process, a flow blocking plate is arranged in the die cavity so that the flow rate of the material flow corresponding to the surface plate is limited.

Through the design of spoiler, can further reduce the velocity of flow that the superficial plywood corresponds flows, further reduce the forming speed of the upper half of floor to improve the floor and go out the uniformity of board, improve the product percent of pass of floor.

Preferably, after the mold is taken out of the plate, water cooling is carried out; further comprises a shaping process: and in the partial or whole water-cooling process, the floor is shaped through a shaping mold so as to prevent the floor from warping.

According to the technical scheme, the floor has higher temperature after being extruded. Extruded, acceptable flooring also tends to buckle when the heat dissipation is inconsistent due to thermal stresses. In the prior art, the floor has a symmetrical structure, so that the situation of inconsistent heat dissipation does not exist, and the problem of bending after cooling does not occur. The floor has an asymmetric structure, the specific surface area of the upper surface is small, and the heat dissipation is slow; the lower surface has larger area and fast heat dissipation; and therefore, is very susceptible to upward bending during cooling. Therefore, the invention carries out shaping simultaneously in the cooling process; specifically, in the water cooling process, the floor is shaped through a shaping mold or subjected to stress release treatment, so that the floor is prevented from warping.

In the technical scheme of the invention, the shaping mold is used on line and is adaptive to the outer contour of the floor. The number of the shaping molds is multiple, and the distance between every two shaping molds is controlled to be 5-20 cm; each shaping mold at least comprises a leading-in section and a shaping section; the leading-in section is in a circular side surface shape of a circular table and generates a slope suitable for leading in the floor with the straight shaping section; a transition section is arranged between the leading-in section and the shaping section, so that the leading-in section and the shaping section are in smooth transition.

In conclusion, the invention has the following beneficial effects:

1. the floor provided by the invention adopts wood plastic as a main component, and is designed into a special structure, so that the floor has the advantages of proper weight, good strength and no water accumulation inside the floor;

2. the production method of the floor has the advantage of high qualification rate of the finished floor.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 4 is a schematic structural view of a mold of the present invention;

FIG. 5 is a schematic cross-sectional view of the die plate of FIG. 4;

FIG. 6 is a schematic structural view of another mold of the present invention;

FIG. 7 is a schematic cross-sectional view of the die plate of FIG. 6;

FIG. 8 is a schematic view of the structure of a shaping mold used in the cooling step of the present invention;

in the figure, 1-a surface plate, 2-a supporting plate, 3-a pressure-bearing bottom plate, 4-an empty area, 5-a cavity and 6-an invagination part;

10-a main runner, 20-a spoiler, 30-a temperature control plate, 40-a die orifice plate, 50-a water cooling box and 60-a sizing die; 601-lead-in section, 602-shape section.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

This detailed description is to be construed as illustrative only and is not limiting, since modifications will occur to those skilled in the art upon reading the preceding specification, and it is intended to be protected by the following claims.

Example one

As shown in FIG. 1, the water accumulation preventing floor comprises a surface plate 1, a support plate 2 and a pressure-bearing bottom plate 3. The surface plate 1, the supporting plate 2 and the pressure-bearing bottom plate 3 are integrally connected. Wherein, the supporting plate 2 and the pressure-bearing bottom plate 3 are four. A supporting unit is formed by one supporting plate and one pressure-bearing bottom plate; the floor of the present embodiment therefore has four support units which bear the weight of the skin plate 1 and the mass of the object loaded on the skin plate 1 uniformly. The floor panel has upper and lower bottom surfaces, and upper and lower surfaces. The upper bottom surface, as indicated by reference numeral 11 in fig. 1, has three upper bottom surfaces 11, which are discontinuous, but substantially in the same plane. The lower bottom surface, indicated by 12 in fig. 1, is a collection of lower surfaces of four pressure-bearing bottom plates 3, and since the pressure-bearing bottom plates 3 of different support units are discontinuous from one another, the lower bottom surfaces 12 are also discontinuous, in this case the lower bottom surfaces 12 have four, which are substantially in the same plane. The upper surface, the upward-facing part of the outermost layer of the entire floor, such as the co-extruded or laminated layer, is referred to as the co-extruded or laminated layer, whereas in this case, since there is no co-extruded or laminated layer, the upper surface of the floor is referred to as the upper surface of the surface sheet 1, which is substantially flat and a continuous surface, but surface treatments may also be applied, such as adding grains to increase the coefficient of friction of the floor, macroscopically, the upper surface of the surface-treated floor is still substantially flat. The lower surface, the most surface-facing downward portion of the entire floor panel and the connecting portions of these downward portions are formed in a complex structure in a contoured shape, and as can be seen from fig. 1, the lower surface of the entire floor panel has a large specific surface area. In this way, the lower bottom surface 12 also constitutes a part of the lower surface.

As shown in figure 1, the floor of the present example has vacant areas 4 between the pressure bearing bottom plates 3, so that the floor has discontinuous lower bottom surfaces. The surface plate 1, two adjacent supporting plates 2 and two adjacent pressure-bearing bottom plates 3 enclose a non-closed cavity 5, and the cavity 5 is communicated with the external environment through the vacant areas 4. According to the above definition, the lower surface of the surface plate 1, the side surface of the support plate 2, and the outer peripheral surface of the pressure-receiving bottom plate 3 together constitute the lower surface of the floor. The floor of the embodiment is suitable for various outdoor environments such as villa decoration, top building terrace, square, park, pavilion, hydrophilic platform, landscape gallery and the like.

Example two

As shown in fig. 2, the difference from the first embodiment is only that, in the first embodiment, two side surfaces of the floor panel are straight; in this case, however, both side ends of the floor panel have recessed portions 6 such that both side surfaces of the floor panel are recessed inwardly. The presence of the invagination 6 increases the load-bearing capacity of the support unit against the floor and the loads loaded on the floor, in particular against the weight load in the middle of the floor. In this example, the thickness of the recessed portion 6 is smaller than that of the cavity 5, so that the portion of the skin sheet 1 corresponding to the recessed portion 6 has a thicker sheet surface. The floor of the embodiment is suitable for various outdoor environments such as villa decoration, top building terrace, square, park, pavilion, hydrophilic platform, landscape gallery and the like.

EXAMPLE III

As shown in fig. 3, the difference from the second embodiment is only that, in this example, the thickness of the recessed portion 6 is greater than that of the cavity 5, so that the portion of the skin sheet 1 corresponding to the recessed portion 6 has a thinner sheet surface. The floor of the embodiment is suitable for various outdoor environments such as villa decoration, top building terrace, square, park, pavilion, hydrophilic platform, landscape gallery and the like.

Example four

The only difference from the first embodiment is that in the first embodiment, the floor is a single layer structure, such as PE extrusion only; in this embodiment, the floor has a double-layer structure, and includes a coating layer coated on PE by co-extrusion, besides the main body portion is extruded by PE, and the coating layer forms the upper surface of the floor.

EXAMPLE five

The floor is made of wood plastic and is prepared by adopting a conventional extrusion process. But is slightly different from conventional extrusion processes. Specifically, the difference from the conventional extrusion process is that:

1) the mould is different; the die orifice of the die used in the extrusion molding process is matched with the cross section shape of the floor; specifically, as shown in fig. 4, 10 is a main runner, which corresponds to a cavity of a mold used; as can be seen from fig. 4 and 5, the die cavity space allocated to the flow corresponding to the top plate is smaller than the die cavity space allocated to the flow corresponding to the support plate and the pressure-bearing bottom plate. Also, a flow blocking plate 20 is provided within the mold cavity such that the flow rate of the flow corresponding to the skin plate is restricted. The mould is also provided with a temperature control plate 30, and the temperature control plate 30 is arranged between the die orifice plate 40 and the mould plate of the mould cavity main body; a heat conducting oil circulation channel is arranged in the temperature control plate 30, and as shown in fig. 4, two circular holes are arranged on the temperature control plate 30, and the two circular holes are an inlet and an outlet of the heat conducting oil respectively. The temperature control plate 30 is used for helping the melt material to cool so as to enable the melt material to start to solidify and generate a certain shaping effect; and also serves as a thermal insulation to prevent the high temperature of the mold cavity from affecting the temperature of the die orifice plate 40.

2) After the die is taken out of the plate, air cooling is carried out firstly, and then water cooling is carried out; further comprises a shaping process: and in the water cooling process, shaping the floor through a shaping mold so as to prevent the floor from warping. As shown in fig. 8, 50 is a water cooling tank; at this time, the floor had been extruded from the die of the die and air-cooled, and entered the water-cooling process. In the water cooling process, in the present embodiment, five sizing dies are arranged in the water cooling tank 50, and the sizing dies are adapted to the outer contour of the floor; the distance between every two shaping molds is controlled to be 15 cm; each sizing die comprises a lead-in section 601 and a sizing section 602; the lead-in section 601 is in the shape of a circular side surface of a circular truncated cone, and forms a slope suitable for the lead-in of the floor together with the straight shaping section 602.

The method of this example is suitable for the preparation of the product of example two.

EXAMPLE six

1) the mould is different; the die orifice of the die used in the extrusion molding process is matched with the cross section shape of the floor; specifically, as shown in fig. 6, 10 is a main runner, which corresponds to a cavity of a mold used; as can be seen from fig. 6 and 7, the die cavity space allocated to the flow corresponding to the top plate is smaller than the die cavity space allocated to the flow corresponding to the support plate and the pressure-bearing bottom plate. Also, a flow blocking plate 20 is provided within the mold cavity such that the flow rate of the flow corresponding to the skin plate is restricted. The mould is also provided with a temperature control plate 30, and the temperature control plate 30 is arranged between the die orifice plate 40 and the mould plate of the mould cavity main body; a heat conducting oil circulation channel is arranged in the temperature control plate 30, as shown in fig. 6, two circular holes are arranged on the temperature control plate 30, and the two circular holes are an inlet and an outlet of the heat conducting oil respectively. The temperature control plate 30 is used for helping the melt material to cool so as to enable the melt material to start to solidify and generate a certain shaping effect; and also serves as a thermal insulation to prevent the high temperature of the mold cavity from affecting the temperature of the die orifice plate 40. As shown in fig. 7, the die plate 40 is further provided with a feeding port 401 of the co-extrusion coating layer, a co-extrusion coating runner 402, and a casting space 403 of the co-extrusion coating layer; in essence, the formation of the co-extruded casting space 403 is also required by the object being coated and the dam 404.

2) After the mould is taken out of the plate, water cooling is carried out; further comprises a shaping process: and in the water cooling process, shaping the floor through a shaping mold so as to prevent the floor from warping. As shown in fig. 8, 50 is a water cooling tank; at this time, the floor had been extruded from the die of the die and air-cooled, and entered the water-cooling process. In the water cooling process, in the present embodiment, five sizing dies are arranged in the water cooling tank 50, and the sizing dies are adapted to the outer contour of the floor; the distance between every two shaping molds is controlled to be 15 cm; each sizing die comprises a lead-in section 601 and a sizing section 602; the lead-in section 601 is in the shape of a circular side surface of a circular truncated cone, and forms a slope suitable for the lead-in of the floor together with the straight shaping section 602.

Different from the fifth embodiment, the floor board manufactured by the fifth embodiment has a co-extruded coating layer. The method of this example is suitable for the preparation of the product of example four.

Claims

1. The utility model provides a prevent ponding floor which characterized in that: the laminated plate comprises a surface plate (1), a plurality of supporting plates (2) and a plurality of pressure-bearing bottom plates (3), wherein the surface plate (1) and the pressure-bearing bottom plates (3) are integrally connected through the supporting plates (2); the floor is characterized in that a surface plate (1) forms a continuous upper surface of the floor, the upper surface is a flat surface, an empty area (4) is arranged between a plurality of pressure-bearing bottom plates (3) to enable the plurality of pressure-bearing bottom plates (3) to form discontinuous lower bottom surfaces of the floor, the surface plate (1), two adjacent supporting plates (2) and two adjacent pressure-bearing bottom plates (3) enclose a non-closed cavity (5), the cavity (5) is communicated with the external environment through the empty area (4), the lower surface of the surface plate (1), the side surfaces of the supporting plates (2) and the peripheral surfaces of the pressure-bearing bottom plates (3) jointly form the lower surface of the floor, the floor further comprises inner sunken parts (6) arranged at two side ends of the floor, the thickness of the inner sunken parts (6) is larger than that of the cavity (5), and the part of the surface plate (1) corresponding to the inner sunken parts (6) is provided with a thinner plate surface, or the thickness of the invagination part (6) is smaller than that of the cavity (5), so that the surface plate (1) part corresponding to the invagination part (6) has a thicker plate surface, and the floor further comprises a co-extrusion layer co-extruded on the surface plate;

the preparation method of the water accumulation preventing floor comprises an extrusion molding process, wherein a die orifice of a die used in the extrusion molding process is matched with the cross section shape of the floor, the die cavity space distributed by material flows corresponding to the surface plate (1) is smaller than the die cavity space distributed by the material flows corresponding to the support plate (2) and the pressure-bearing bottom plate (3), and in the extrusion molding process, a flow baffle (20) is arranged in the die cavity to limit the flow rate of the material flows corresponding to the surface plate (1);

the die orifice plate (40) is provided with a feeding port (401) of a co-extrusion coating layer, a co-extrusion coating runner (402) and a co-extrusion coated casting space (403), and the formation of the co-extrusion coated casting space (403) is realized by means of a coated object and a material baffle plate (404).

2. The method for preparing a water accumulation preventing floor as claimed in claim 1, comprising an extrusion molding process using a die having a die orifice matched with a sectional shape of the floor; the method is characterized in that: in the die cavity of the die used in the extrusion molding process, the die cavity space distributed by the material flow corresponding to the surface plate (1) is smaller than the die cavity space distributed by the material flow corresponding to the support plate (2) and the pressure-bearing bottom plate (3);

in the extrusion molding process, a flow blocking plate (2) is arranged in the mold cavity, so that the flow rate of the material flow corresponding to the surface plate (1) is limited;

a feeding port (401) of a co-extrusion coating layer, a co-extrusion coating runner (402) and a co-extrusion coating casting space (403) are arranged on the die orifice plate (40), and the formation of the co-extrusion coating casting space (403) is realized by means of a coated object and a material baffle (404);

the upper surface of the floor is a flat surface.

3. The method for preparing the water accumulation preventing floor as claimed in claim 2, wherein: after the mould is taken out of the plate, water cooling is carried out; further comprises a shaping process: and in the whole or partial water-cooling process, the floor is shaped through a shaping mold simultaneously so as to prevent the floor from warping.