WO2021077509A1 - 具有木材纹理的发泡地板 - Google Patents

具有木材纹理的发泡地板 Download PDF

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Publication number
WO2021077509A1
WO2021077509A1 PCT/CN2019/119345 CN2019119345W WO2021077509A1 WO 2021077509 A1 WO2021077509 A1 WO 2021077509A1 CN 2019119345 W CN2019119345 W CN 2019119345W WO 2021077509 A1 WO2021077509 A1 WO 2021077509A1
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WO
WIPO (PCT)
Prior art keywords
surface layer
foamed
floor
exposed
color
Prior art date
Application number
PCT/CN2019/119345
Other languages
English (en)
French (fr)
Inventor
黄东辉
唐道远
但堂勇
Original Assignee
安徽森泰木塑科技地板有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 安徽森泰木塑科技地板有限公司 filed Critical 安徽森泰木塑科技地板有限公司
Priority to US17/254,874 priority Critical patent/US20210363762A1/en
Publication of WO2021077509A1 publication Critical patent/WO2021077509A1/zh

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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
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/321—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed part being a lining, e.g. a film or a support lining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/002—Combinations of extrusion moulding with other shaping operations combined with surface shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • B29C59/046—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for layered or coated substantially flat surfaces
    • 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
    • B32B27/065—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 of foam
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0453—Ornamental plaques, e.g. decorative panels, decorative veneers produced by processes involving moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F9/00—Designs imitating natural patterns
    • B44F9/02—Designs imitating natural patterns wood grain effects
    • 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
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E04F15/105—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials of organic plastics with or without reinforcements or filling materials
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
    • H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • H02J3/242—Arrangements for preventing or reducing oscillations of power in networks using phasor measuring units [PMU]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/001—Flat articles, e.g. films or sheets having irregular or rough surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
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    • B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/404—Multi-coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Definitions

  • the invention relates to a foamed floor, especially a foamed floor with wood texture. It belongs to the technical field of co-extruded foam board.
  • Traditional imitation wood floors are generally composite floors. It is composed of MDF substrate, wood grain decorative paper, wear-resistant layer and balance layer at the bottom.
  • MDF substrate is prone to mold and rot, and there is a fire hazard, the field urgently needs a floor with mildew-proof and flame-retardant functions.
  • PVC foam floor has become a choice.
  • the shape and appearance of the PVC foam floor do not meet the traditional requirements of people's use, resulting in its low added value and difficult to use in a large area of the market.
  • the Chinese invention patent application with publication number CN102294812A discloses a polystyrene imitation wood profile, which to a certain extent solves the problem of appearance defects of the plastic floor itself. It puts the surface layer material and the core layer material into the auxiliary extruder and the main extruder respectively, and co-extrudes them into a mold, so that the surface layer material is coated on the core layer material.
  • the surface layer material is high-impact polystyrene and contains rhyolite masterbatch with good compatibility with high-impact polystyrene but different fluidity and dispersibility.
  • the core material is polystyrene micro-foamed board. The surface of the co-extruded profile is embossed to produce a three-dimensional effect or other effects.
  • This method uses color masterbatches of different substrate colors to make base color masterbatches and flow pattern masterbatches respectively.
  • the base color masterbatches have good fluidity and are dispersed in the base styrene material to form a background color during processing;
  • Grain color masterbatch has a low melt index and poor dispersibility. It cannot be uniformly dispersed during processing.
  • wood grain or other patterns are formed.
  • the base color and flow pattern are prone to the problems of mutual fusion and cross-color in the adjacent places.
  • the imitation wood texture of the co-extruded floor is quite different from the wood texture, and general users can easily distinguish the above-mentioned floor from the solid wood floor in appearance.
  • the present invention provides a foamed co-extruded floor with the same appearance as wood texture.
  • a foamed floor with wood texture includes a foamed base formed of resin and a block structure, and a hard surface layer integrally connected with the foamed base and covering at least one surface thereof, and the hard surface layer includes The first exposed surface formed by the resin of the first color and the second exposed surface formed by the resin of the second color, one surface of the foamed substrate is substantially parallel; the distance from the second exposed surface to the surface covered by the foamed substrate is shorter than that of the first exposed surface.
  • the hard surface layer also includes a connecting unit between the adjacent exposed unit and the depressed unit.
  • the connecting unit includes a connecting substrate formed of a first color resin and integrally connected with the first exposed surface, and a connecting substrate covered on the connecting substrate.
  • the hard surface layer further comprises a resin formed of the first color, which is integrally connected to the connecting substrate and covered by the second exposed surface ⁇ ; The color of the first color resin and the second color resin are different.
  • the hard surface layer not only plays the role of protecting and restraining the foamed substrate, but also the first exposed surface and the second exposed surface of the hard surface layer are arranged at intervals to form wood grain. Since the first exposed surface and the second exposed surface are independent and integrally connected to each other, and they have different colors, combined with them have different depths, they can show a three-dimensional effect, and they can also show different light and dark levels under light. , So the wood grain jointly expressed by the first exposed surface and the second exposed surface has a realistic effect.
  • the wood texture formed based on this has multiple levels of expression, such as color, three-dimensional, and light and dark, and does not affect each other at different levels of expression, and different objects of the same level of expression do not affect each other, not only the wood texture effect is realistic It can also show a variety of wood textures by adjusting multiple levels to better meet the needs of the market.
  • the first exposed surface and the second exposed surface are independent of each other because they are layered; the integral connection is because their interlayer connection is not realized by means such as glue.
  • the foam base of the floor is made of PVC foamed material
  • the hard surface layer is made of ASA non-foamed material.
  • the thickness of the first exposed surface is not less than 0.1 mm, and the thickness of the second exposed surface is not less than 0.05 mm.
  • the density of the wood-textured foamed floor is 0.6-1.0 g/cm 3
  • the surface hardness is 60-90 Rockwell hardness.
  • the foam matrix of the floor is fed by the main extruder, and the first exposed surface formed by the first color resin, the connecting substrate and the base layer are fed by an auxiliary extruder, The second exposed surface formed by the second color resin and the connecting surface material are fed by another auxiliary extruder.
  • Another object of the present invention is to provide a method for preparing the above-mentioned wood texture foamed floor.
  • the law includes the following steps:
  • the floor precursor structure has a foamed matrix, a first surface layer and a second surface layer, and the second surface layer is arranged between the first surface layer and the foamed matrix;
  • the floor precursor structure is cooled and formed
  • step d when the surface is heated, the temperature of the first surface layer is controlled within 250°C.
  • step d when the surface is heated, a tunnel oven is used for heating, the temperature in the oven is controlled at 150-250°C, and the time is controlled at 3-20s.
  • the embossing roll is a cold roll.
  • step f a sanding machine is used during the polishing treatment.
  • the present invention adopts the layered co-extrusion method to co-extrude the surface of the two layers on the foam layer, and press the surface of the two layers through the embossing roller to extrude the previous state of the wood texture; after the embossing roller is processed, the floor surface is formed In areas with different shades, the first surface layer of some areas is embossed below the second surface layer; the first surface layer can be removed by sanding, and the part of the first surface layer that is embossed below the second surface layer cannot be removed, so the second surface layer is left behind.
  • the second surface layer and part of the first surface layer together form a wood texture, which has a realistic effect.
  • the present invention has the following beneficial effects:
  • the foamed floor with wood texture of the present invention uses resin as a material, is based on two surface layers, and realizes the realistic effect of wood texture through three-dimensional (depth of texture), color difference, light and dark and other levels of expression techniques. And it can also realize a variety of wood textures by adjusting the three-dimensional, chromatic aberration, and brightness.
  • Figure 1 is a schematic diagram of the floor precursor structure of the present invention
  • Figure 2 is a schematic diagram of the co-extruded floor of the present invention.
  • Figure 3 is a partial enlarged view of Figure 2;
  • Figure 4 is a schematic diagram of the structure of the mold of the present invention.
  • Figure 5 is a front view of the A plate in Figure 4.
  • Figure 6 is a front view of plate B in Figure 4.
  • Figure 7 is a front view of the C board in Figure 4.
  • a foamed floor with wood texture includes a foamed base 1000 and a hard surface layer 2000.
  • the hard surface layer 2000 is a three-dimensional concave-convex structure, the convex surface is the first exposed surface 2001, and the concave surface is the second exposed surface 2002.
  • the first exposed surface 2001 is formed of a resin of the first color and is substantially parallel to one surface of the foam base 1000.
  • the second exposed surface 2002 is formed of a second color resin. The first color resin and the second color resin form a certain color difference.
  • the first exposed surface 2001 is composed of a plurality of exposed units substantially on the same plane
  • the second exposed surface 2002 is composed of a plurality of sinking units.
  • a plurality of exposed units and a plurality of sunken units are arranged staggered.
  • the connecting unit includes a connecting base material 2010 and a connecting surface material 2020 that are integrally connected.
  • the connecting substrate 2010 is formed of a first color resin and is integrally connected with the first exposed surface; the connecting surface material 2020 covers the connecting substrate 2010 and is formed of a second color resin.
  • the hard surface layer 2000 also includes a base layer 2003, which is formed of a first color resin, is integrally connected with the connection substrate 2010, and is covered by the second exposed surface 2002.
  • the foam base 1000 is made of PVC micro-foamed material
  • the hard surface layer 2000 is made of ASA.
  • the thickness of the first exposed surface 2001 is 0.2 mm
  • the thickness of the second exposed surface 2002 is 0.08 mm.
  • the density is 0.72g/cm 3 and the surface hardness is 72 Rockwell.
  • the raw materials and additives that make up the foaming matrix 1000 are mixed by a high-speed mixer and then added to the main extruder.
  • the raw materials and their additives are melted and plasticized in the main extruder and enter the main flow channel of the mold. Extrude from the die lip of the main runner and enter the foaming cavity of the die to foam to form a foaming matrix 1000;
  • the raw materials and additives that constitute the resin of the first color, and the raw materials and the additives that constitute the resin of the second color are respectively mixed by a high-speed mixer, and then added to the first auxiliary extruder and the second auxiliary extruder.
  • the materials are melted and plasticized in the first auxiliary extruder and the second auxiliary extruder, respectively, enter the first surface runner and the second surface runner of the mold, and pass through the first surface runner and the second surface runner.
  • the lateral diffusion of the second surface flow channel, the molten material flows out of the first surface flow channel and the second surface flow channel, respectively, and enters the first surface casting cavity and the second surface casting cavity.
  • the molten material is made to coat the foam matrix 1000 in layers, and co-extruded from the die mouth of the mold. After extrusion, it is air-cooled and shaped in the shaping mold, and the floor precursor structure is formed after the shaping mold; As shown in Figure 1, the floor precursor structure has a foam layer 1000, a first surface layer 2001' and a second surface layer 2002';
  • the floor precursor structure is formed by water cooling
  • polishing treatment so that the first surface layer 2001' that has not been pressed into the surface of the second surface layer 2002' is worn away, and the second surface layer 2002' appears on the corresponding part of the worn area; making the previous state of the wood texture change Into wood texture.
  • the raw materials and additives constituting the foamed substrate 1000 and the raw materials and additives constituting the hard surface layer 2000 belong to the prior art, so detailed descriptions are omitted.
  • a mold for manufacturing the above-mentioned foamed floor includes a main runner module 3, a second surface layer module 2 and a first surface layer module 1, which is composed of eight runner plates A-H.
  • the D-H board is provided with the main runner 300 of the core layer of the mold, which is used to form the core layer foam layer of the wood-like foam co-extruded floor.
  • the C board in addition to the main runner 300 of the mold core layer, the C board is also provided with the material inlet 201 of the second surface layer module and the material outlet 202 of the second surface layer material inlet plate.
  • the two openings are connected by a flow channel.
  • the B plate in addition to the main runner 300 of the mold core layer, the B plate is also provided with the material inlet 203 of the second surface layer forming plate and the second surface runner 200, the second surface runner 200 and the main runner A second surface casting cavity 20 is formed between 300. Baffles 4 are also provided at both ends of the second surface casting cavity 20.
  • the second surface flow channel 200 is connected with the second surface casting cavity 20 through a slot; this arrangement enables the melt of the second surface layer to be coated on the core plate in a semi-coated manner to form the first intermediate .
  • the C board is the second surface layer forming board 21, and the B board is the second surface forming board 22; the material outlet 202 of the second surface layer forming board is connected to the material inlet 203 of the second surface forming board;
  • the second surface layer casting cavity 20 is arranged on the second surface layer forming plate 22, and the material inlet 201 of the second surface layer module is arranged on the side of the entire mold.
  • the A plate in addition to the main runner 300 of the mold core layer, the A plate is also provided with the material inlet 101 of the first surface layer module and the first surface runner 100, the first surface runner 100 and the main runner 300 A first surface casting cavity 10 is formed therebetween. Baffles 4 are also provided at both ends of the first surface casting cavity 10.
  • the first surface flow channel 100 is communicated with the first surface casting cavity 10 through a slot; this arrangement enables the melt of the first surface layer to be coated on the first intermediate body in a semi-coated manner to form a wood texture
  • the precursor structure of the foamed floor is also provided with the material inlet 101 of the first surface layer module and the first surface runner 100, the first surface runner 100 and the main runner 300 A first surface casting cavity 10 is formed therebetween. Baffles 4 are also provided at both ends of the first surface casting cavity 10.
  • the first surface flow channel 100 is communicated with the first surface casting cavity 10 through a slot; this arrangement enables the melt of the first surface layer to be coated on the first intermediate
  • the first surface layer module 1 is solely composed of a flow channel plate, that is, an A plate.
  • the material inlet 101 and the mold outlet 5 of the first surface layer module are both arranged on the A plate, while the material inlet 101 of the first surface layer module is arranged on the upper part of the mold.
  • the distance between the discharge port of the first surface layer casting cavity 10 and the discharge port of the second surface layer casting cavity 20 in the die ejection direction is not less than 0.1 mm.
  • the precursor structure of the foamed floor with wood texture can obtain the foamed floor with wood texture.
  • the post-processing is based on two surface layers.
  • the Chinese invention patent application with publication number CN102294812A has only one surface layer, so it is relatively monotonous in terms of expression.
  • the floor based on two surface layers can be treated separately by treating the two surface layers, such as using different colors for the two surface layers, embossing the upper surface layer, and removing part of the surface layer after embossing, so that the floor surface has two levels of surface. , From the perspective of three-dimensional (embossed depth), chromatic aberration, light and shade, etc., so as to achieve a realistic effect of texture.

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Abstract

本发明涉及一种具有木材纹理的发泡地板。属于共挤发泡板技术领域。它包括发泡基体和硬质表层，硬质表层包括（a）和（b），（a）由第一颜色树脂形成的第一外露面、连接底材和基层；（b）由第二颜色树脂形成的第二外露面和连接底材。第一外露面由多个外露单元组成，第二外露面由多个下陷单元组成。多个外露单元与多个下陷单元交错排列。相邻外露单元和下陷单元之间设置有连接单元，连接单元由连接底材和连接表材构成。本发明以树脂为材料，基于两个表层，并通过立体（纹的深浅）、色差和明暗等多个层面的表现手法，实现了木材纹理的逼真效果。并且还可以通过对立体、色差和明暗的调节，来实现各种各样的木材纹理。

Description

具有木材纹理的发泡地板 技术领域
本发明涉及一种发泡地板，尤其是具有木材纹理的发泡地板。属于共挤发泡板技术领域。
 背景技术
传统仿木地板一般都是复合地板。由密度板基材、木纹装饰纸、耐磨层以及底部的平衡层组成。但由于密度板基材易发霉腐烂，还有火灾隐患，本领域亟需一种具有防霉阻燃功能的地板。在这种情况下，PVC发泡地板成为了一种选择。但PVC发泡地板本身形状和外观不符合人们使用传统要求，导致其附加值低，难以大面积市场使用。
公开号为CN102294812A的中国发明专利申请，公开了一种聚苯乙烯仿木型材，它在一定程度上解决了塑料地板本身的外观缺陷问题。它是把表层材料和芯层材料分别投入到辅助挤出机和主要挤出机，共挤到一个模具，使表层材料包覆在芯层材料上。表层材料为高抗冲聚苯乙烯并含有和高抗冲聚苯乙烯相容性好但流动性和分散性不同的流纹色母，芯层材料为聚苯乙烯微发泡板。共挤出的型材表面进行产生立体效果或其他效果的压花处理。
 技术问题
该法采用不同基材颜色的色母粒，分别做成基色色母粒和流纹色母粒，基色色母粒流动性较好，在加工过程中分散于基苯乙烯材料形成底色；流纹色母熔融指数较低，分散性较差，在加工过程中不能均匀分散，随着材料的挤出形成木纹或其他花纹。基色和流纹在相邻之处容易发生互融和串色的问题，上述共挤地板的仿木纹理与木材纹理差别较大，一般用户能够轻易地将上述地板和实木地板在外观上区分开。
 技术解决方案
本发明要解决上述问题，提供了一种具有与木材纹理相同外观的发泡共挤地板。
本发明解决上述问题的技术方案如下：
具有木材纹理的发泡地板，包括由树脂形成且具有块状结构的发泡基体和与发泡基体一体连接并覆盖在它的至少一个面上的硬质表层，所述硬质表层包括由与发泡基体一个面大体平行的第一颜色树脂形成的第一外露面，以及由第二颜色树脂形成的第二外露面；所述第二外露面到发泡基体被覆盖之表面的距离较第一外露面小；并且，第一外露面由多个大体处于同一平面的外露单元组成，第二外露面由多个下陷单元组成，所述多个外露单元与多个下陷单元交错排列；所述硬质表层还包括处于相邻外露单元和下陷单元之间的连接单元，所述连接单元包括由第一颜色树脂形成并与第一外露面一体连接的连接底材以及覆盖在连接底材上的由第二颜色树脂形成并与第二外露面一体连接连接表材；并且，所述的硬质表层还包括由第一颜色树脂形成的与连接底材一体连接并被所述第二外露面覆盖的基层；所述第一颜色树脂与第二颜色树脂的颜色不同。
本发明上述技术方案中，硬质表层不仅起到对发泡基体的保护及约束作用，而且硬质表层的第一外露面和第二外露面的间隔排列形成木纹。由于第一外露面和第二外露面彼此独立又一体连接，并且它们具有不同的颜色，再结合它们具有不同的深浅度，可表现出立体的效果，在光线下还能表现出不同的明暗层次，因此由第一外露面和第二外露面共同表现的木纹具有逼真的效果。基于此形成的木材纹理，在表现手段上具有多个层次，如颜色、立体和明暗，并且在不同表现层面互不影响，同一表现层次的不同表现对象上也互不影响，不仅木材纹理效果逼真，还可以通过对多个层次的调节，表现出各种各样的木材纹理，更好地适应市场的需求。第一外露面和第二外露面彼此独立是因为它们之间是有分层的；一体连接是因为它们的层间连接不是通过诸如胶粘等形式来实现的。
作为上述技术方案的优选，所述地板的发泡基体为PVC发泡材质，硬质表层为ASA非发泡材质。
作为上述技术方案的优选，所述第一外露面的厚度不小于0.1mm，第二外露面的厚度不小于0.05mm。
作为上述技术方案的优选，所述木材纹理的发泡地板的密度为0.6~1.0g/cm 3，表面硬度为洛氏硬度60~90。
作为上述技术方案的优选，所述地板的发泡基体由主挤出机供料，由第一颜色树脂形成的第一外露面、连接底材和基层由一台辅挤出机供料，由第二颜色树脂形成的第二外露面和连接表材由另一台辅挤出机供料。
本发明的再一个目的是提供上述木材纹理的发泡地板的一种制备方法。
该法包括以下步骤：
a、将构成发泡基体的原料及其添加剂加入到主挤出机中，原料及其添加剂在主挤出机中熔融塑化，进入模具的主流道中，并从主流道的模唇挤出，进入模具的发泡腔内发泡，进而形成发泡基体；
b、将构成第一颜色树脂的原料及其添加剂加入到第一辅挤出机，将构成第二颜色树脂的原料及其添加剂加入到第二辅挤出机，物料分别在第一辅挤出机中和第二辅挤出机中熔融塑化，分别进入模具的第一辅流道和第二辅流道中，通过第一辅流道和第二辅流道的横向扩散，熔融态的物料分别从第一辅流道的一字口和第二辅流道的一字口流出，使熔融态的物料将发泡基体分层包覆，并从模具的模口共挤挤出，形成地板前体结构；地板前体结构具有发泡基体、第一表层和第二表层，第二表层设置在第一表层和发泡基体之间；
c、地板前体结构经过冷却成型；
d、对冷却成型后的地板前体结构进行表面加热，至少使其第一表层变软；
e、通过压纹辊的压印处理，使得第一表层的部分区域压入到第二表层表面以下，使第一表层和第二表层共同表现出木材纹理的前态；
f、打磨处理，使未被压入到第二表层表面以下的第一表层被磨损，被磨损的区域相应的部位呈现出第二表层；使得木材纹理的前态转变成木材纹理。
作为上述技术方案的优选，步骤d中，表面加热时，控制第一表层的温度在250℃以内。
作为上述技术方案的优选，步骤d中，表面加热时，采用隧道式烘箱进行加热，烘箱内温度控制在150~250℃，时间控制在3~20s。
作为上述技术方案的优选，步骤e中，压纹辊的压花处理时，压纹辊为冷辊。
作为上述技术方案的优选，步骤f中，打磨处理时，采用砂光机处理。
本发明采用分层共挤法，在发泡层上共挤上两层的表面，并通过压纹辊在这个两层的表面压出木材纹理的前态；压纹辊处理后，地板表面形成深浅不同的区域，部分区域的第一表层被压印到第二表层以下；第一表层可被打磨去除，而第一表层被压印到第二表层表面以下部分无法被去除，因此留下第二表层和部分的第一表层，由此共同形成了木材纹理，该木材纹理具有逼真效果。
 有益效果
综上所述，本发明具有以下有益效果：
本发明具有木材纹理的发泡地板，以树脂为材料，基于两个表层，并通过立体（纹的深浅）、色差和明暗等多个层面的表现手法，实现了木材纹理的逼真效果。并且还可以通过对立体、色差和明暗的调节，来实现各种各样的木材纹理。
 附图说明
图1是本发明地板前体结构的示意图；
图2是本发明共挤地板的示意图；
图3是图2的局部放大图；
图4是本发明模具的结构示意图；
图5是图4中A板的主视图；
图6是图4中B板的主视图；
图7是图4中C板的主视图；
图中，1-第一表层模块，2-第二表层模块，3-主流道模块；4-挡流板，5-模具出口；10-第一表层流延腔，20-第二表层流延腔；21-第二表层入料板，22-第二表层形成板；100-第一表层流道，200-第二表层流道；101-第一表层模块的物料入料口；201-第二表层模块的物料入料口；202-第二表层入料板的物料出料口；203-第二表层形成板的物料入料口；1000-发泡基体，2000-硬质表层，2001-第一外露面，2002-第二外露面，2003-基层，2010-连接底材，2020-连接表材；2001’-第一表层，2002’-第二表层。
 本发明的最佳实施方式
如图2所示，一种木质纹理的发泡地板，包括发泡基体1000和硬质表层2000。硬质表层2000是一种立体的凹凸结构，凸面为第一外露面2001，凹面为第二外露面2002。第一外露面2001，由第一颜色树脂形成，与发泡基体1000的一个面大体平行。第二外露面2002，由第二颜色树脂形成。第一颜色树脂和第二颜色树脂形成一定的色差。
第一外露面2001由多个大体处于同一平面的外露单元组成，第二外露面2002由多个下陷单元组成。多个外露单元与多个下陷单元交错排列。
如图3所示，相邻外露单元和下陷单元之间具有连接单元，它是硬质表层2000的一部分。连接单元包括一体连接的连接底材2010和连接表材2020。连接底材2010由第一颜色树脂形成并与第一外露面一体连接；连接表材2020覆盖在连接底材2010上，由第二颜色树脂形成。
硬质表层2000还包括基层2003，基层2003由第一颜色树脂形成，与连接底材2010一体连接，并被第二外露面2002所覆盖。
本实施例的木材纹理的发泡地板，发泡基体1000的材质为PVC微发泡材质，硬质表层2000的材质为ASA。第一外露面2001的厚度为0.2mm，第二外露面2002的厚度为0.08mm。密度为0.72g/cm 3，表面硬度为洛氏硬度为72。上述木材纹理的发泡地板的制造方法，包括以下步骤：
a、将构成发泡基体1000的原料及其添加剂经过高速混料机混匀后加入到主挤出机中，原料及其添加剂在主挤出机中熔融塑化，进入模具的主流道中，并从主流道的模唇挤出，进入模具的发泡腔内发泡，进而形成发泡基体1000；
b、将构成第一颜色树脂的原料及其添加剂，和，构成第二颜色树脂的原料及其添加剂，分别经过高速混料机混匀后，分别加入到第一辅挤出机和第二辅挤出机中，物料分别在第一辅挤出机中和第二辅挤出机中熔融塑化，分别进入模具的第一表层流道和第二表层流道中，通过第一表层流道和第二表层流道的横向扩散，熔融态的物料分别从第一表层流道的一字口和第二表层流道的一字口流出，分别进入第一表层流延腔和第二表层流延腔内，使熔融态的物料将发泡基体1000分层包覆，并从模具的模口共挤挤出，挤出后在定型模内空冷定型，出定型模后形成地板前体结构；如图1所示，地板前体结构具有发泡层1000、第一表层2001’和第二表层2002’；
c、地板前体结构经过水冷却成型；
d、对水冷却成型后的地板前体结构进行表面加热，使其第一表层2001’和第二表层2002’变软；具体地，通过隧道式加热烘箱，烘箱温度控制在200℃，通过隧道式烘箱的时间为10s，使第一表层2001’加热到90℃左右，使其软化，适于被压印出纹理；
e、通过压纹辊的压印处理，使得第一表层2001’的部分区域压入到第二表层2002’表面以下，使第一表层2001’和第二表层2002’共同表现出木材纹理的前态；
f、打磨处理，使未被压入到第二表层2002’表面以下的第一表层2001’被磨损，被磨损的区域相应的部位上呈现出第二表层2002’；使得木材纹理的前态转变成木材纹理。
本由于实施例上述技术方案中，构成发泡基材1000的原料及其添加剂和构成硬质表层2000的原料及其添加剂均属于现有技术，故不再进行详细描述。
如图4所示，一种用于制造上述发泡地板的模具，包括主流道模块3、第二表层模块2和第一表层模块1，共由A-H八块流道板组成。
其中，D-H板设有模具芯层的主流道300，用于仿木纹理的发泡共挤地板的芯层发泡层的成型。
同时参照图7，C板除了设有模具芯层的主流道300外，还设有第二表层模块的物料入料口201和第二表层入料板的物料出料口202。这两个口子之间通过流道连通。
同时参照图6，B板除了设有模具芯层的主流道300外，还设有第二表层形成板的物料入料口203和第二表层流道200，第二表层流道200和主流道300之间形成第二表层流延腔20。第二表层流延腔20两侧端部还设置有挡流板4。第二表层流道200与第二表层流延腔20通过一字口连通；如此设置，可使得第二表层的熔料以半包覆地形式包覆在芯层板上，形成第一中间体。
C板也就是第二表层入料板21，B板也就是第二表层形成板22；第二表层入料板的物料出料口202与第二表层形成板的物料入料口203相接；所述第二表层流延腔20设置在第二表层形成板22上，第二表层模块的物料入料口201设置在整个模具的侧部。
B板和C板共同构成了第二表层模块2。
同时参照图5，A板除了设有模具芯层的主流道300外，还设有第一表层模块的物料入料口101和第一表层流道100，第一表层流道100和主流道300之间形成第一表层流延腔10。第一表层流延腔10两侧端部还设置有挡流板4。第一表层流道100与第一表层流延腔10通过一字口连通；如此设置，可使得第一表层的熔料以半包覆地形式包覆在第一中间体上，形成具有木材纹理的发泡地板的前体结构。
本实施例中，第一表层模块1单独地由一个流道板组成，也就是A板。第一表层模块的物料入料口101和模具出口5都设置在A板上，同时第一表层模块的物料入料口101设置在模具上部。
为了使第一表层和第二表层不串色，第一表层流延腔10的出料口和第二表层流延腔20的出料口在模具出板方向上的间距为不小于0.1mm。
具有木材纹理的发泡地板的前体结构经后续处理，可得到具有木材纹理的发泡地板。后期处理是基于两个表层实现的，公开号为CN102294812A的中国发明专利申请它只有一个表层，故在表现手法上比较单调。而基于两个表层的地板，可以通过对两个表层分别处理，如两个表层用不同的颜色、对上面的表层进行压纹、压纹后去除部分的表层使地板表面出现两种层次的表面，从立体（压纹深度）、色差、明暗等角度去表现，从而实现纹理逼真的效果。

Claims (9)

  1. 具有木材纹理的发泡地板，包括由树脂形成且具有块状结构的发泡基体（1000）和与发泡基体一体连接并覆盖在它的至少一个面上的硬质表层（2000），所述硬质表层（2000）包括由与发泡基体一个面大体平行的第一颜色树脂形成的第一外露面（2001），以及由第二颜色树脂形成的第二外露面（2002）；所述第二外露面（2002）到发泡基体被覆盖之表面的距离较第一外露面（2001）小；并且，第一外露面（2001）由多个大体处于同一平面的外露单元组成，第二外露面（2002）由多个下陷单元组成，所述多个外露单元与多个下陷单元交错排列；所述硬质表层还包括处于相邻外露单元和下陷单元之间的连接单元，所述连接单元包括由第一颜色树脂形成并与第一外露面一体连接的连接底材（2010）以及覆盖在连接底材上的由第二颜色树脂形成并与第二外露面一体连接的连接表材（2020）；并且，所述的硬质表层还包括由第一颜色树脂形成的与连接底材一体连接并被所述第二外露面覆盖的基层（2003）；所述第一颜色树脂与第二颜色树脂的颜色不同。
  2. 根据权利要求1所述的具有木材纹理的发泡地板，其特征在于：所述地板的发泡基体（1000）为PVC发泡材质，硬质表层（2000）为ASA非发泡材质。
  3. 根据权利要求1所述的具有木材纹理的发泡地板，其特征在于：所述第一外露面（2001）的厚度不小于0.1mm，第二外露面（2002）的厚度不小于0.05mm。
  4. 根据权利要求1所述的具有木材纹理的发泡地板，其特征在于：所述地板的发泡基体（1000）由主挤出机供料，由第一颜色树脂形成的第一外露面（2001）、连接底材（2010）和基层（2003）由一台辅挤出机供料，由第二颜色树脂形成的第二外露面（2002）和连接表材（2020）由另一台辅挤出机供料。
  5. 权利要求1~4任一项所述的具有木材纹理的发泡地板，包括以下步骤：
    a、将构成发泡基体的原料及其添加剂加入到主挤出机中，原料及其添加剂在主挤出机中熔融塑化，进入模具的主流道中，并从主流道的模唇挤出，进入模具的发泡腔内发泡，进而形成发泡基体（1000）；
    b、将构成第一颜色树脂的原料及其添加剂加入到第一辅挤出机，将构成第二颜色树脂的原料及其添加剂加入到第二辅挤出机，物料分别在第一辅挤出机中和第二辅挤出机中熔融塑化，分别进入模具的第一辅流道和第二辅流道中，通过第一辅流道和第二辅流道的横向扩散，熔融态的物料分别从第一辅流道的一字口和第二辅流道的一字口流出，使熔融态的物料将发泡基体（1000）分层包覆，并从模具的模口共挤挤出，形成地板前体结构；地板前体结构具有发泡基体（1000）、第一表层（2001’）和第二表层（2002’），第二表层设置在第一表层和发泡基体之间；
    c、地板前体结构经过冷却成型；
    d、对冷却成型后的地板前体结构进行表面加热，至少使其第一表层（2001’）变软；
    e、通过压纹辊的压印处理，使得第一表层（2001’）的部分区域压入到第二表层（2002’）表面以下，使第一表层和第二表层共同表现出木材纹理的前态；
    f、打磨处理，使未被压入到第二表层（2002’）表面以下的第一表层（2001’）被磨损，被磨损的区域相应的部位呈现出第二表层（2002’）；使得木纹理的前态转变成木材纹理。
  6. 根据权利要求5所述的具有木材纹理的发泡地板的制备方法，其特征在于：步骤d中，表面加热时，控制第一表层（2001’）的温度在250℃以内。
  7. 根据权利要求6所述的具有木材纹理的发泡地板的制备方法，其特征在于：步骤d中，表面加热时，采用隧道式烘箱进行加热，烘箱内温度控制在150~250℃1，时间控制在3~20s。
  8. 根据权利要求6所述的具有木材纹理的发泡地板的制备方法，其特征在于：步骤e中，压纹辊的压花处理时，压纹辊为冷辊。
  9. 根据权利要求6所述的具有木材纹理的发泡地板的制备方法，其特征在于：步骤f中，打磨处理时，采用砂光机处理。
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