WO2019237266A1 - 一种轻质塑胶地板及其生产工艺 - Google Patents

一种轻质塑胶地板及其生产工艺 Download PDF

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WO2019237266A1
WO2019237266A1 PCT/CN2018/090979 CN2018090979W WO2019237266A1 WO 2019237266 A1 WO2019237266 A1 WO 2019237266A1 CN 2018090979 W CN2018090979 W CN 2018090979W WO 2019237266 A1 WO2019237266 A1 WO 2019237266A1
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Prior art keywords
parts
mixture
plastic floor
tpu
layer
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PCT/CN2018/090979
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English (en)
French (fr)
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戴会斌
章忠飞
赵培东
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浙江晶通塑胶有限公司
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Priority to PCT/CN2018/090979 priority Critical patent/WO2019237266A1/zh
Priority to CN201880003785.4A priority patent/CN109844241A/zh
Publication of WO2019237266A1 publication Critical patent/WO2019237266A1/zh

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    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • 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

Definitions

  • the invention relates to the field of flooring, in particular to a lightweight plastic floor and a production process thereof.
  • PVC polyvinyl chloride
  • the technical problem to be solved by the present invention is to provide a lightweight plastic floor with light weight and good foot feel.
  • the technical solution of the present invention is to provide a lightweight plastic floor, which includes a PP or PE foam layer, and a TPU layer is compounded on the upper surface and the lower surface of the PP or PE foam layer, respectively.
  • the PP or PE foamed layer may also be replaced with a HDPE foamed layer.
  • the TPU layer is extruded from a TPU mixture.
  • the TPU mixture is composed of the following raw materials by weight: TPU 80-120 parts; stabilizer 2-4 parts; PE wax 1-1.5 parts; stearic acid 1- 1.5 parts; 40-80 parts of stone powder; 2-4 parts of CPE.
  • the PP or PE foaming layer is formed by foaming and extrusion of a PP compound or a PE compound, respectively.
  • the PP compound is composed of the following raw materials by weight, 80-100 parts of PP, and 3-8 parts of PP foaming agent.
  • PE mixture consists of the following raw materials in parts by weight Composition, 80-100 parts PE, 3-8 parts PE foaming agent, 1-5 parts antioxidant, 2-5 parts stearic acid, 0.1-3 parts acrylic copolymer, plasticizer dioctyl phthalate 0.1-1.5 parts of ester, 0.5-1.6 parts of cross-linking agent.
  • the HDPE foam layer is formed by HDPE mixture foam extrusion molding.
  • the HDPE mixture is composed of the following raw materials by weight, HDPE 80-100 parts, PE foaming agent 1-5 parts, and antioxidant 1-5 Parts, 2-5 parts stearic acid, 0.1-3 parts acrylic acid copolymer, 0.1-1.6 parts plasticizer dioctyl phthalate, and 0.5-2.6 parts cross-linking agent.
  • the thickness is 5 to 12 mm.
  • the present invention also provides a production process for a lightweight plastic floor, including the following steps,
  • Step 1 Prepare raw materials, prepare TPU mixture and PP mixture or PE mixture separately and put them into the extruder;
  • Step two melt plasticize, melt and plasticize the raw materials in step one in the main machine and the auxiliary machine respectively;
  • Step three the molten material is distributed, and the molten raw material in step two is entered into a melt pump and distributed and co-extruded;
  • Step four the blank is fixed, the distributed molten material enters the mold, and is extruded into a sheet blank consisting of a TPU layer, a PP or PE foam layer, and a TPU layer from top to bottom;
  • Step five set the surface texture of the sheet blank by rolling or 3D printing
  • Step six slicing and grooving.
  • step 1 the PP or PE mixture in step 1 is replaced with an HDPE mixture.
  • the same or different coloring materials can be added to each mixture according to the colors needed to make the finished product.
  • the present invention utilizes the characteristics of heat insulation, abrasion resistance, scratch resistance, and stain resistance of thermoplastic polyurethane elastomer rubber (TPU), and combines polyethylene (PE) and polymer
  • TPU thermoplastic polyurethane elastomer rubber
  • PE polyethylene
  • PP polypropylene
  • the lightweight characteristics of polypropylene (PP) foaming are perfectly combined to make the floor of the present invention both lightweight and have a good foot feel, and its weight is only one-tenth to sevenths of the weight of the prior art PVC plastic board. It has good heat insulation effect, abrasion resistance and stain resistance.
  • the production process of this product is simple and easy. It can be formed by co-extrusion, and the compound effect is good.
  • FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
  • a lightweight plastic floor includes a PP foam layer 1, and the upper surface and the lower surface of the PP foam layer 1 are respectively compounded with a TPU layer 2. Among them, the TPU layer is extruded from a TPU mix.
  • the TPU mix is composed of the following raw materials by weight: TPU 80 parts; stabilizer 2 parts; PE wax 1.5 parts; stearic acid 1.5 parts; stone powder 40 parts; CPE 2 parts ; PP mixture consists of the following parts by weight of raw materials, 00 parts PP, 5 parts PP foaming agent, 3 parts antioxidant, 2 parts stearic acid, 0.3 parts acrylic copolymer, plasticizer phthalic acid 0.5 parts of octyl ester, antioxidants include antioxidant 168 and antioxidant 1010. Its production process includes the following steps,
  • Step 1 Prepare the raw materials, weigh the TPU mixture and PP mixture in the ratio of 3: 5, and then put them into the extruder through the feeder.
  • Step two melt plasticization, melt the raw material of step one in the main machine and the auxiliary machine, specifically, first, melt plasticize in the main machine, the material in step one enters the screw barrel of the extruder, and The screw extrusion pressure is controlled at 60 ⁇ 80MPa, and the temperature of the extruder screw barrel is adjusted within the range of 140 ⁇ 198 ° C. Then the melt is plasticized in the auxiliary machine, the material enters the screw barrel of the extruder, and the screw extrusion pressure is Controlled at 40 ⁇ 70MPa, the extruder screw barrel temperature control adjustment range is 180 ⁇ 230 °C;
  • Step three the molten material is distributed, and the molten material in step two is entered into a melt pump and distributed and co-extruded;
  • Step four the blank is fixed, and the distributed molten material enters the mold, and the mold temperature is set to 9 stages, which are: 208-230 ° C, 198-202 ° C, 193-197 ° C, 188-192 ° C, 183-187 ° C, 188 ⁇ 192 °C, 193 ⁇ 197 °C, 198 ⁇ 202 °C and 208 ⁇ 230 °C, the molten material is extruded from the mold and enters the shaping table, and is formed into a TPU layer, a PP foam layer and a TPU layer from top to bottom. Sheet blank, and set the thickness of the blank to 10mm;
  • Step five roll or 3D print, and form a pattern on the surface of the sheet blank by rolling or 3D printing;
  • Step six slicing and grooving, slicing and grooving as needed.
  • a lightweight plastic floor includes a PE foam layer, and a TPU layer is compounded on the upper surface and the lower surface of the PE foam layer, respectively.
  • the TPU layer is extruded from a TPU mixture.
  • the TPU mixture is composed of the following raw materials by weight: TPU 86 parts; stabilizer 2 parts; PE wax 1 part; stearic acid 1.5 parts; stone powder 60 parts; PE mix
  • the material is composed of the following parts by weight, 100 parts of PE, 3 parts of PE foaming agent, 1.5 parts of antioxidant, 2.5 parts of stearic acid, 1 part of acrylic copolymer, 1 part of dioctyl phthalate, and crosslinking 0.6 parts of the agent, and the cross-linking agent may be a photo-crosslinking agent, a thermal cross-linking agent, or a combination thereof.
  • hexanediol diacrylate, ethylene glycol diacrylate, and diethylene glycol diacrylate can be used.
  • a lightweight plastic floor includes a DPE foam layer, and a TPU layer is compounded on the upper surface and the lower surface of the DPE foam layer, respectively.
  • the TPU layer is extruded from a TPU mixture.
  • the TPU mixture is composed of the following raw materials by weight: 100 parts of TPU; 3 parts of stabilizer; 1 part of PE wax; 1.5 parts of stearic acid; 50 parts of stone powder; HDPE mixing
  • the material is composed of the following parts by weight, 100 parts HDPE, 2 parts PE foaming agent, 2 parts antioxidant, 5 parts stearic acid, 3 parts acrylic copolymer, 1.6 parts plasticizer dioctyl phthalate , 1.6 parts of cross-linking agent.
  • the ratio of the TPU mixture to the HDPE mixture is 1: 1, and a coloring material is added to the mixture according to the color of the finished product.
  • the coloring material is a divergent pigment.

Abstract

一种轻质塑胶地板及其生产工艺，包括PP或PE发泡层，PP或PE发泡层的上表面和下表面分别复合有TPU层。该轻质塑胶地板重量轻，脚感好，而且隔热效果好，耐磨、耐污。

Description

一种轻质塑胶地板及其生产工艺 技术领域：
本发明涉及地板领域，具体讲是一种轻质塑胶地板及其生产工艺。
背景技术：
使用聚氯乙烯(PVC)等石油类树脂的地板广泛地应用于住宅、豪宅、公寓、办公室或店铺等建筑物中。但这种塑胶地板重量重，由于质感较硬，脚感也不好。
发明内容：
本发明所要解决的技术问题是，提供一种重量轻，脚感好的轻质塑胶地板地板。
本发明的技术解决方案是，提供一种轻质塑胶地板，包括PP或PE发泡层，PP或PE发泡层的上表面和下表面分别复合有TPU层。
作为优选，PP或PE发泡层还可以替代为HDPE发泡层。
作为优选，TPU层由TPU混合料挤出成型，TPU混合料由以下重量份数的原料组成，TPU 80-120份；稳定剂2-4份；PE蜡1-1.5份；硬脂酸1-1.5份；石粉40-80份；CPE2-4份。
作为优选，PP或PE发泡层分别由PP混合料或PE混合料发泡挤出成型，PP混合料由以下重量份数的原料组成，PP 80-100份，PP发泡剂3-8份，抗氧剂1-5份，硬脂酸2-5份，丙烯酸共聚物0.1-3份，增塑剂邻苯二甲酸二辛酯0.1-1.5份；PE混合料由以下重量份数的原料组成，PE 80-100份，PE发泡剂3-8份，抗氧剂1-5份，硬脂酸2-5份，丙烯酸共聚物0.1-3份，增塑剂邻苯二甲酸二辛酯0.1-1.5份，交联剂0.5-1.6份。
作为优选，HDPE发泡层由HDPE混合料发泡挤出成型，HDPE混合料由以下重量份数的原料组成，HDPE 80-100份，PE发泡剂1-5份，抗氧剂1-5份，硬脂酸2-5份，丙烯酸共聚物0.1-3份，增塑剂邻苯二甲酸二辛酯0.1-1.6份，交联剂0.5-2.6份。
作为优选，其厚度为5～12mm。
本发明还提供一种轻质塑胶地板的生产工艺，包括以下步骤，
步骤一，原料准备，将TPU混合料与PP混合料或PE混合料分别准备好后投入挤出机；
步骤二，熔融塑化，将步骤一中的原料分别在主机和辅机中熔融塑化；
步骤三，熔融物料分配，将步骤二中的熔融原料进入熔体泵并进行分配共挤；
步骤四，定坯，经分配的熔融物料进入模具中，并挤出成型为从上到下依次为TPU层、PP或PE发泡层和TPU层的板材坯料；
步骤五，辊压或3D打印，板材坯料表面纹理设置；
步骤六，分片和开槽。
进一步的，步骤一中的PP混合料或PE混合料替代为HDPE混合料。
进一步的，还可根据所需制作形成成品的颜色在各混合料中添加相同或不同的着色料。
采用以上方案后与现有技术相比，本发明具有以下优点：本发明利用热塑性聚氨酯弹性体橡胶(TPU)隔热、耐磨、耐刮、耐污的特性，结合聚乙烯(PE)、聚丙烯(PP)发泡成型后轻质的特点，进行完美结合，使得本发明的地板既轻质又具有良好脚感，其重量仅为现有技术PVC塑胶板重量的十分之一到七分之一，且隔热效果好，耐磨、耐污，同时，生产该产品的工艺简单易行，通过共挤方式成型，复合效果好。
附图说明：
图1为本发明的一个实施例的结构示意图。
具体实施方式：
下面就具体实施方式对本发明作进一步说明：
实施例一
如图1所示，一种轻质塑胶地板，包括PP发泡层1，PP发泡层1的上表面和下表面分别复合有TPU层2。其中，TPU层由TPU混合料挤出成型，TPU混合料由以下重量份数的原料组成，TPU 80份；稳定剂2份；PE蜡1.5份；硬脂酸1.5份；石粉40份；CPE2份；PP混合料由以下重量份数的原料组成，PP 00份，PP发泡剂5份，抗氧剂3份，硬脂酸2份，丙烯酸共聚物0.3份，增塑剂 邻苯二甲酸二辛酯0.5份，抗氧剂包括抗氧剂168和抗氧剂1010。其生产工艺包括以下步骤，
步骤一，原料准备，将TPU混合料与PP混合料按3:5比例称重后分别通过投料机投入挤出机；
步骤二，熔融塑化，将步骤一种的原料分别在主机和辅机中熔融塑化，具体的，首先是主机中的熔融塑化，步骤一中的物料进入挤出机的螺筒中，将螺杆挤出压力控制在60～80MPa，将挤出机螺筒温控调节在140～198℃范围内；然后是辅机中熔融塑化，物料进入挤出机的螺筒，将螺杆挤出压力控制在40～70MPa，挤出机螺筒温控调节范围为180～230℃；
步骤三，熔融物料分配，将步骤二中的熔融物料进入熔体泵并进行分配共挤；
步骤四，定坯，经分配的熔融物料进入模具中，模具温度设置为9段，分别为：208～230℃、198～202℃、193～197℃、188～192℃、183～187℃、188～192℃、193～197℃、198～202℃与208～230℃，熔融物料从模具中挤出后进入定型台，成型为从上到下依次为TPU层、PP发泡层和TPU层的板材坯料，并将坯料的厚度设定为10mm；
步骤五，辊压或3D打印，通过滚压或3D打印使板材坯料表面形成图案花纹；
步骤六，分片和开槽，根据需要分片和开槽。
实施例二
一种轻质塑胶地板，包括PE发泡层，PE发泡层的上表面和下表面分别复合有TPU层。其中，TPU层由TPU混合料挤出成型，TPU混合料由以下重量份数的原料组成，TPU 86份；稳定剂2份；PE蜡1份；硬脂酸1.5份；石粉60份；PE混合料由以下重量份数的原料组成，PE100份，PE发泡剂3份，抗氧剂1.5份，硬脂酸2.5份，丙烯酸共聚物1份，邻苯二甲酸二辛酯1份，交联剂0.6份,交联剂可使用光交联剂、热交联剂或它们的组合。例如，可使用己二醇二丙烯酸酯、乙二醇二丙烯酸酯、二乙二醇二丙烯酸酯。
其生产工艺的步骤与实施例一致。
实施例三
一种轻质塑胶地板，包括DPE发泡层，DPE发泡层的上表面和下表面分别复合有TPU层。其中，TPU层由TPU混合料挤出成型，TPU混合料由以下重量份数的原料组成，TPU 100份；稳定剂3份；PE蜡1份；硬脂酸1.5份；石粉50份；HDPE混合料由以下重量份数的原料组成，HDPE100份，PE发泡剂2份，抗氧剂2份，硬脂酸5份，丙烯酸共聚物3份，增塑剂邻苯二甲酸二辛酯1.6份，交联剂1.6份。其生产工艺中，TPU混合料和HDPE混合料的比例为1:1，并且根据成品的颜色在混合料中添加着色料，着色料选用发散型颜料。
以上仅就本发明较佳的实施例作了说明，但不能理解为是对权利要求的限制。凡是利用本发明说明书所做的等效结构或等效流程变换，均包括在本发明的专利保护范围之内。

Claims (9)

  1. 一种轻质塑胶地板，其特征在于：包括PP或PE发泡层，PP或PE发泡层的上表面和下表面分别复合有TPU层。
  2. 根据权利要求1所述的轻质塑胶地板，其特征在于：PP或PE发泡层还可以替代为HDPE发泡层。
  3. 根据权利要求1所述的轻质塑胶地板，其特征在于：TPU层由TPU混合料挤出成型，TPU混合料由以下重量份数的原料组成，TPU 80-120份；稳定剂2-4份；PE蜡1-1.5份；硬脂酸1-1.5份；石粉40-80份；CPE2-4份。
  4. 根据权利要求1所述的轻质塑胶地板，其特征在于：PP或PE发泡层分别由PP混合料或PE混合料发泡挤出成型，PP混合料由以下重量份数的原料组成，PP 80-100份，PP发泡剂3-8份，抗氧剂1-5份，硬脂酸2-5份，丙烯酸共聚物0.1-3份，增塑剂邻苯二甲酸二辛酯0.1-1.5份；PE混合料由以下重量份数的原料组成，PE 80-100份，PE发泡剂3-8份，抗氧剂1-5份，硬脂酸2-5份，丙烯酸共聚物0.1-3份，增塑剂邻苯二甲酸二辛酯0.1-1.5份，交联剂0.5-1.6份。
  5. 根据权利要求1所述的轻质塑胶地板，其特征在于：HDPE发泡层由HDPE混合料发泡挤出成型，HDPE混合料由以下重量份数的原料组成，HDPE 80-100份，PE发泡剂1-5份，抗氧剂1-5份，硬脂酸2-5份，丙烯酸共聚物0.1-3份，增塑剂邻苯二甲酸二辛酯0.1-1.6份，交联剂0.5-2.6份。
  6. 根据权利要求1所述的轻质塑胶地板，其特征在于：其厚度为5～12mm。
  7. 一种轻质塑胶地板的生产工艺，其特征在于：包括以下步骤，
    步骤一，原料准备，将TPU混合料与PP混合料或PE混合料分别准备好后投入挤出机；
    步骤二，熔融塑化，将步骤一中的物料分别在主机和辅机中熔融塑化；
    步骤三，熔融物料分配，将步骤二中的熔融物料进入熔体泵并进行分配共挤；
    步骤四，定坯，经分配的熔融物料进入模具中，并挤出成型为从上到下依次为TPU层、PP或PE发泡层和TPU层的板材坯料；
    步骤五，辊压或3D打印，板材坯料表面纹理设置；
    步骤六，分片和开槽。
  8. 根据权利要求6所述的轻质塑胶地板轻质塑胶地板的生产工艺，其特征在于：步骤一中的PP混合料或PE混合料替代为HDPE混合料。
  9. 根据权利要求6所述的轻质塑胶地板轻质塑胶地板的生产工艺，其特征在于：还可根据所需制作形成成品的颜色在各混合料中添加相同或不同的着色料。
PCT/CN2018/090979 2018-06-13 2018-06-13 一种轻质塑胶地板及其生产工艺 WO2019237266A1 (zh)

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