New! View global litigation for patent families

CN101434751B - Material with waste plastic and plant fibre as plate and preparation thereof - Google Patents

Material with waste plastic and plant fibre as plate and preparation thereof Download PDF

Info

Publication number
CN101434751B
CN101434751B CN 200710158089 CN200710158089A CN101434751B CN 101434751 B CN101434751 B CN 101434751B CN 200710158089 CN200710158089 CN 200710158089 CN 200710158089 A CN200710158089 A CN 200710158089A CN 101434751 B CN101434751 B CN 101434751B
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
portions
material
waste
method
portion
Prior art date
Application number
CN 200710158089
Other languages
Chinese (zh)
Other versions
CN101434751A (en )
Inventor
金世源
Original Assignee
沈阳市塑料机械研究所
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
Grant date

Links

Abstract

The invention discloses a material which uses waste plastics and vegetable fiber for producing sheet materials, and a preparation method thereof, which relates to a material utilizing waste plastics and vegetable fiber for preparing building templates and a preparation method thereof. The invention aims at providing a material for fully utilizing waste plastics and vegetable fiber to prepare building templates and a preparation method thereof, which is characterized in that the material comprises the following raw materials according to portions by weight: 30 portions to 60 portions of waste thermoplastic resin, 30 portions to 60 portions of natural fiber powder, 1 portion to 2 portions of polyethylene wax, 1 portion to 2 portions of EVA1, 1 portion to 2 portions of zinc stearate, 1 portion to 2 portions of stearic acid, 0.8 portion of silane coupling agent, 5 portions to 10 portions of talcum powder and 5 portions to 10 portions of aedelforsite. A production method provided by the invention is characterized in that the method includes the following steps: a) after hot-mixed, particles are made by extrusion; and b) the particles pass through an extruding machine for heating and plasticizing, and then are extruded to a mould of the invention to form a template base, and cooled and molded by a flat cooling moulding machine, and finally pulled and cut to shape the material.

Description

用废旧塑料和植物纤维做板材的材料及其制备方法 Waste plastic sheet made with a vegetable fibrous material and its preparation method

技术领域: FIELD:

[0001] 本发明涉及一种利用废旧塑料和天然植物纤维制备建筑模板的材料及其制备方法。 [0001] The present invention relates to a waste plastic and natural plant fiber prepared template building materials and their preparation methods.

背景技术: Background technique:

[0002] 在建筑工程中所使用的建筑模板是指混凝土浇注中使用的钢模板、木模板及塑料模板。 [0002] Construction template in construction steel as used herein refers to a template, and the template wood plastic template used in pouring concrete. 钢模板的重量大、且易生锈;而且在使用过程中易与混凝土粘合在一起,难以脱模。 By weight of large steel template, and rust; and in the course of concrete bonded together easily, it is difficult to release. 木模板虽然其重量轻,但其强度低,不防水,易霉变腐烂,故重复使用率低,需消耗资源;塑料模板的缺点是刚性差,易变形,且其成本高。 Although the timber formwork is lightweight, but its strength is low, it is not waterproof, mildew rot, so repeated use is low, consumes resources; plastic template disadvantage is poor rigidity, deformation, and high cost. 塑木复合板兼有木模板和塑料模板的性能,且不易生锈,易脱模,可重复使用,克服了上述模板的缺点。 Wood wood composite board both performance and templates plastic template, and rust, easy mold release, can be reused, it overcomes the disadvantages of the above-described template. 中国专利02157949.0公开的木塑纤维发泡复合材料及加工成型工艺和由薛平、丁筠、贾明印申请的木塑微发泡复合材料及其加工成型方法的专利是用塑料、木料、矿物填料及发泡剂等混合挤出成型的。 Wood fiber composite materials and foam molding process and wood processing by the Ping Xue, Ding Yun, Beauty and printing applications disclosed in Chinese Patent 02157949.0 micro-foam composite material and a method of molding processing patent plastic, wood, mineral filler and mixing of the blowing agent, and extrusion molding. 在板材的生产中,由于挤出的融料在板式模具中由于压力受力不均,会产生塑木板的薄厚不均,塑料与木粉的分散均勻程度差,当连续生产时边角冷却速度快,产生木塑板的不平整,翘曲等毛病,因此,该塑木复合板不能形成连续工业化生产。 In the production of sheet metal, since the extruded material into uneven force due to pressure, generated in the plate Bohou wood plastic mold unevenness, uniform dispersion degree of plastic and wood powder is poor, when the cooling rate of the continuous production corner fast, produce uneven wood plate, warping and other problems, and therefore, the wood composite board can not form a continuous industrial production.

发明内容: SUMMARY:

[0003] 本发明就是针对上述问题,提供一种能够充分利用废旧塑料和天然植物纤维制备建筑模板的材料及其制备方法。 [0003] The present invention addresses the above problems, to provide a full use of the waste plastic material and its preparation method and preparation of natural vegetable fibers architectural template.

[0004] 为了实现上述目的,本发明采用如下技术方案:其特征在于,本发明包括下列原料,按重量份数比为: [0004] To achieve the above object, the present invention adopts the following technical scheme: wherein, according to the present invention includes the following raw materials, in parts by weight ratio of:

[0005] 废旧热塑性树脂30〜60份、天然纤维粉30〜60份、聚乙烯蜡1〜2份、 EVA(乙烯-醋酸乙烯酯共聚物)1〜2份、硬脂酸锌1〜2份、硬脂酸1〜2份、硅烷偶联剂0.8份、滑石粉5〜10份及硅灰石5〜10份。 [0005] The thermoplastic resin waste parts of 30~60, 30~60 parts of natural fiber powder, 1 to 2 parts of polyethylene wax, the EVA (ethylene - vinyl acetate copolymer) 1 to 2 parts, 1 to 2 parts of zinc stearate , 1 to 2 parts of stearic acid, 0.8 parts of a silane coupling agent, 5 to 10 parts of talc and 5 to 10 parts of wollastonite.

[0006] 本发明的生产方法:其特征在于,包括如下步骤: [0006] The production process of the present invention: wherein, comprising the steps of:

[0007] a)首先,将废旧热塑性树脂30〜60份和天然纤维粉30〜60份在混合机内热混,然后加入聚乙烯蜡1〜2份、EVA1〜2份、硬脂酸锌1〜2份、硬脂酸1〜2份、 硅烷偶联剂0.8份、滑石粉5〜10份及硅灰石5〜10份,在115〜150°C温度下热混5〜 20分钟后,经挤出造颗粒; [0007] a) Firstly, the thermoplastic resin and 30~60 parts of waste natural fiber powder mix heat 30~60 parts in a mixer, followed by addition of 1 to 2 parts of polyethylene wax, EVA1~2 parts zinc stearate 1 ~ 2 parts, 1 to 2 parts of stearic acid, 0.8 parts of a silane coupling agent, 5 to 10 parts of talc and 5 to 10 parts of wollastonite, at a temperature of 115~150 ° C -5 to 20 minutes after the hot mix, by making extruded particles;

[0008] b)将上述颗粒经挤出机加热塑化,挤入到温度在120〜130°C的本发明的模具内,挤出板型坯,再经平板式冷却定型机冷却定型,牵引切割成形。 [0008] b) The above granules were heated plasticizing extruder, extruded in the mold to a temperature of 120~130 ° C according to the present invention, the parison extruded plate, and then the cooling plate cooling setting setting machine, traction cut to shape.

[0009] 本发明的有益效果: [0009] Advantageous effects of the invention:

[0010] 本发明充分利用了废旧塑料及废弃的天然纤维粉,尤其是天然纤维粉,如废弃的木材制成的木粉和麦草、稻草、棉秆等破碎后制成的纤维粉;这些原料使本发明的制备成本低、重量轻、耐老化、耐冲击、易脱模、重复性利用率高;本发明可锯、刨、钻、钉、焊接等。 [0010] The present invention makes full use of waste plastics and waste natural fiber powder, in particular a natural fiber powder such as wood flour and wheat straw, rice straw, cotton stalks and other cellulosic powder produced after crushing the waste timber is made; these materials preparation of the present invention a low cost, lightweight, aging resistance, impact resistance, easy mold release, high repeatability utilization; present invention sawing, planing, drilling, nailing, welding or the like.

[0011] 利用本发明的生产方法,可有效解决塑木复合板加工翘曲等问题,顺利地实现了塑木复合板的连续工业生产,例如,厚度大于5mm,宽度大于0.8m的连续工业化生产。 [0011] With the producing method of the present invention can effectively solve the warpage of wood composite board processing problems, to achieve a smooth continuous industrial production of wood composite panels, for example, a thickness of greater than 5mm, a width greater than the continuous industrial production of 0.8m .

具体实施方式: detailed description:

[0012] a)将废旧热塑性(PE和PP)树脂粉和20目的天然纤维粉加入到高速混合机中进行热混,混合5分钟后,按上述配方加入聚乙烯蜡、EVA、硬脂酸锌、硅烷偶联剂、硬脂酸、滑石粉及硅灰石,在115°C热混10分钟后,将混合均勻的热料排入冷混机中冷混至40 〜50°C。 [0012] a) The thermoplastic waste (PE and PP) resin powder and the natural fiber powder 20 is added to the object of high-speed mixer for hot mix, mixing for 5 minutes, according to the above formulation was added polyethylene wax, EVA, zinc stearate , a silane coupling agent, stearic acid, talc and wollastonite, 115 ° C after hot mix for 10 minutes, mixed material into the hot blender in cold to cold mix 40 ~50 ° C.

[0013] b)将混合好的物料加入SJ80/156型双螺杆挤出机或ST150排气式挤出机中, 挤出机加料段、压缩段、排气段、均化段、混炼段,机头各温度分别设定为170°C、 180 °C> 180 °C> 170°C> 165 °C> 180°C。 [0013] b) Add the mixed material SJ80 / 156 twin-screw extruder, vented extruder, or ST150, the extruder feed section, the compression section, an exhaust section, homogenizing section, mixing section , each head temperature were set to 170 ° C, 180 ° C> 180 ° C> 170 ° C> 165 ° C> 180 ° C.

[0014] c)挤出机挤出的物料直接进入料流可调的、温度可控的板式模具中,板式模具的厚度调到10〜20mm,宽度1.220m,温度控制在120〜130°C,通过板式模具出来的物料进入平板式定型模板冷却定型后光辊整平,胶辊牵引。 [0014] c) extruder material directly into the stream of adjustable temperature-controllable plate mold, the thickness of the die plate is adjusted to 10~20mm, the width of 1.220m, temperature controlled at 120~130 ° C after entering the flat-shaped cooling setting template material out through the die plate leveling rolls, traction roller. 两段压辊的转速为0.3m/min 左右,前压辊压强为8kg/cm2,后压辊压强为lOkg/cm2,压辊间距为0.5m。 Two press roll speed is about 0.3m / min, pressure of the pressing roller before 8kg / cm2, the pressure of the pressure roller lOkg / cm2, the pressure roll gap is 0.5m.

[0015] d)冷却采用温水冷却,冷却后成为厚度为10〜20mm,宽度为1.220m的定型塑木板,塑模板通过自动切割机切割成需要的建筑模板尺寸。 [0015] d) cooling using cooling warm water, cooled to a thickness of 10~20mm, a width of 1.220m styling plastic boards, plastic templates automatic cutting machine cut to the desired size of the construction template.

[0016] 实施例1 [0017] 本发明包括下列原料,按重量份: 数比为[0018] 废旧热塑性(PE或PP)树脂 30份[0019] 天然纤维粉 60份 [0020] 聚乙烯蜡 2份 [0021] EVA 2份 [0022] 硬脂酸锌 1份 [0023] 硬脂酸 1份 [0024] 硅烷偶联剂 0.8份 [0025] 滑石粉 10份 [0026] 硅灰石 10份 [0027] 实施例2 [0028] 本发明包括下列原料,按重量份: 数比为[0029] 废旧热塑性(PE或PP)树脂 40份[0030] 天然纤维粉 40份 [0031] 聚乙烯蜡 1份 [0032] EVA 2份 [0033] 硬脂酸锌 1份 [0034] 硬脂酸 1份 [0035] 硅烷偶联剂 0.8份[0036] 滑石粉 10份[0037] 硅灰石 5份[0038] 实施例3 [0039] 本发明包括下列原料,按重量份数比为 [0040] 废旧热塑性(PE或PP)树脂40份 [0041] 天然纤维粉 38.2 份[0042] 聚乙烯蜡 1份[0043] EVA 2份[0044] 硬脂酸锌 1份[0045] 硬脂酸 1份[0046] 硅烷偶联剂 0.8份[0047] 滑石粉 10份[0048] 硅灰石 5份[0049] 实施例4 [0050] 本发明包括下列原料,按重量份 [0016] Example 1 [0017] The present invention includes the following raw materials, in parts by weight: ratio of the number of [0018] waste thermoplastic (PE or PP) resin, 30 parts of [0019] natural fiber powder 60 parts [0020] Polyethylene wax 2 parts [0021] EVA 2 parts [0022] 1 part of zinc stearate [0023] stearic acid 1 part [0024] 0.8 parts of silane coupling agent [0025] 10 parts of talc [0026] 10 parts wollastonite [0027 ] Example 2 [0028] The present invention includes the following raw materials, in parts by weight: ratio of the number of [0029] waste thermoplastic (PE or PP) resin, 40 parts of [0030] 40 parts of the natural fiber powder [0031] 1 part of polyethylene wax [ 0032] EVA 2 parts [0033] 1 part of zinc stearate [0034] stearic acid 1 part [0035] 0.8 parts of silane coupling agent [0036] talc 10 parts [0037] 5 parts wollastonite [0038] embodiment Example 3 [0039] The present invention includes the following raw materials, in parts by weight ratio of [0040] 40 parts [0041] 38.2 parts of natural fiber powder [0042] waste thermoplastic (PE or PP) resin parts polyethylene wax 1 [0043] EVA 2 parts [0044] 1 part of zinc stearate [0045] stearic acid 1 part [0046] 0.8 parts of silane coupling agent [0047] talc 10 parts [0048] 5 parts wollastonite [0049] Example 4 [ 0050] The present invention includes the following raw materials, parts by weight 数比为 [0051] 废旧热塑性(PE或PP)树脂45份 [0052] 天然纤维粉 34份[0053] 聚乙烯蜡 1份[0054] EVA 2份[0055] 硬脂酸锌 1份[0056] 硬脂酸 1份[0057] 硅烷偶联剂 0.8份[0058] 滑石粉 10份[0059] 硅灰石 5.2份 Ratio is the number of [0051] waste thermoplastic (PE or PP) resin, 45 parts of [0052] natural fiber powder 34 parts [0053] 1 part of polyethylene wax [0054] EVA 2 parts [0055] 1 part of zinc stearate [0056] stearic acid 1 part [0057] 0.8 parts of silane coupling agent [0058] talc 10 parts [0059] 5.2 parts of wollastonite

Claims (6)

  1. 1.用废旧塑料和植物纤维做板材的材料,其特征在于,包括下列原料,按重量份数比为:废旧热塑性树脂30〜60份、天然纤维粉30〜60份、聚乙烯蜡1〜2份、EVA1〜 2份、硬脂酸锌1〜2份、硬脂酸1〜2份、硅烷偶联剂0.8份、滑石粉5〜10份及硅灰石5〜10份。 1. Laminates made with plant fibers and waste plastics, characterized by comprising the following raw materials, in parts by weight ratio of: 30~60 parts scrap thermoplastic resin, natural fiber powder 30~60 parts of polyethylene wax ~ 2 parts, EVA1~ 2 parts, 1 to 2 parts of zinc stearate, 1 to 2 parts of stearic acid, 0.8 parts of a silane coupling agent, 5 to 10 parts of talc and 5 to 10 parts of wollastonite.
  2. 2.用废旧塑料和植物纤维做板材的材料的制备方法,其特征在于,包括如下步骤:a)首先,将废旧热塑性树脂30〜60份和天然纤维粉30〜60份在混合机内热混,然后加入聚乙烯蜡1〜2份、EVA1〜2份、硬脂酸锌1〜2份、硬脂酸1〜2份、硅烷偶联剂0.8份、滑石粉5〜10份及硅灰石5〜10份,在115〜150°C温度下热混5〜20分钟后,经挤出造颗粒;b)将上述颗粒经挤出机加热塑化,挤入到温度在120〜130°C的料流可调的、温度可控的板式模具中,板式模具的厚度调到10〜20mm,宽度1.220m,挤出板型坯,再经平板式冷却定型机冷却定型,牵引切割成形。 2. The method of preparing a sheet made of waste plastics and plant fiber material, characterized by comprising the steps of: a) Firstly, the thermoplastic resin and 30~60 parts of waste natural fiber powder mixed in a mixer 30~60 parts by heat, 1 to 2 parts of polyethylene wax was then added, EVA1~2 parts, 1 to 2 parts of zinc stearate, 1 to 2 parts of stearic acid, 0.8 parts of a silane coupling agent, 5 to 10 parts of talc and wollastonite 5 ~ 10 parts, at a temperature of 115~150 ° C hot mix 5~20 minutes, making extruded particles; b) the above-described particles are heated plasticizing extruder, extruded at a temperature of 120~130 ° C adjustable stream, a temperature-controlled mold plate, the thickness of the die plate is adjusted to 10~20mm, the width of 1.220m, plate extruded parison, and then cooling plate setting machine cooling setting, pulling cut to shape.
  3. 3.根据权利要求1所述的用废旧塑料和植物纤维做板材的材料,其特征在于,包括下列原料,按重量份数比为:废旧热塑性树脂 30份天然纤维粉 60份聚乙烯蜡 2份EVA 2 份硬脂酸锌 1份硬脂酸 1份硅烷偶联剂 0.8份滑石粉 10份硅灰石 10份。 The plant fiber and with waste plastics according to claim 1 made of sheet material, characterized by comprising the following raw materials, in parts by weight ratio: 2 parts 30 parts of the thermoplastic resin waste natural fiber powder 60 parts Polyethylene wax EVA 2 parts 10 parts of zinc stearate 1 part stearic acid 1 part 0.8 parts of silane coupling agent 10 parts of talc wollastonite.
  4. 4.根据权利要求1所述的用废旧塑料和植物纤维做板材的材料,其特征在于,包括下列原料,按重量份数比为:废旧热塑性树脂 40份天然纤维粉 40份聚乙烯蜡 1份EVA 2 份硬脂酸锌 1份硬脂酸 1份硅烷偶联剂 0.8份滑石粉 10份硅灰石 5份。 The plant fiber and with waste plastics according to claim 1 made of sheet material, characterized by comprising the following raw materials, in parts by weight ratio of: 40 parts of a thermoplastic resin waste natural fiber powder 40 parts Polyethylene wax 1 part EVA 2 parts zinc stearate 1 part stearic acid 1 part 0.8 parts of silane coupling agent 10 parts talc 5 parts wollastonite.
  5. 5.根据权利要求1所述的用废旧塑料和植物纤维做板材的材料,其特征在于,包括下列原料,按重量份数比为:废旧热塑性树脂 40份天然纤维粉 38.2份聚乙烯蜡 1份EVA 2 份硬脂酸锌 1份硬脂酸 1份硅烷偶联剂 0.8份滑石粉 10份硅灰石 5份。 The plant fiber and with waste plastics according to claim 1 made of sheet material, characterized by comprising the following raw materials, in parts by weight ratio of: 40 parts of a thermoplastic resin waste natural fiber powder 38.2 parts Polyethylene wax 1 part EVA 2 parts zinc stearate 1 part stearic acid 1 part 0.8 parts of silane coupling agent 10 parts talc 5 parts wollastonite.
  6. 6.根据权利要求1所述的用废旧塑料和植物纤维做板材的材料,其特征在于,包括下列原料,按重量份数比为:废旧热塑性树脂天然纤维粉聚乙烯蜡EVA硬脂酸锌硬脂酸硅烷偶联剂滑石粉硅灰石45份; 34份1份2份1份1份08份10份5.2 份。 The plant fiber and with waste plastics according to claim 1 made of sheet material, characterized by comprising the following raw materials, in parts by weight ratio of: natural fibers scrap thermoplastic resin powder, zinc stearate hard EVA polyethylene wax fatty acid silane coupling agent 45 parts of talc wollastonite; 34 parts 2 parts 1 part 1 part 1 part 5.2 parts 08 parts 10 parts.
CN 200710158089 2007-11-12 2007-11-12 Material with waste plastic and plant fibre as plate and preparation thereof CN101434751B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200710158089 CN101434751B (en) 2007-11-12 2007-11-12 Material with waste plastic and plant fibre as plate and preparation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200710158089 CN101434751B (en) 2007-11-12 2007-11-12 Material with waste plastic and plant fibre as plate and preparation thereof

Publications (2)

Publication Number Publication Date
CN101434751A true CN101434751A (en) 2009-05-20
CN101434751B true CN101434751B (en) 2011-04-20

Family

ID=40709394

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200710158089 CN101434751B (en) 2007-11-12 2007-11-12 Material with waste plastic and plant fibre as plate and preparation thereof

Country Status (1)

Country Link
CN (1) CN101434751B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101787793A (en) * 2010-02-11 2010-07-28 詹德威 Composite board and construction method thereof
CN101967242B (en) * 2010-09-28 2012-07-04 浙江中元枫叶管业有限公司 Wood plastic material blending-modified by using a plurality of recycling plastics
CN103144152B (en) * 2013-03-13 2015-12-09 中国林业科学研究院木材工业研究所 A formaldehyde plywood and preparation method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5539027A (en) 1992-08-31 1996-07-23 Andersen Corporation Advanced polymer/wood composite structural member
CN1188174A (en) 1997-01-15 1998-07-22 张恒 Material for making building shutter board
CN1324884A (en) 2001-06-09 2001-12-05 高界平 Method of preparing composite material with waste plastics
CN1827701A (en) 2006-04-14 2006-09-06 徐凌秀 Wood-plastic biological filling and method for making same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5539027A (en) 1992-08-31 1996-07-23 Andersen Corporation Advanced polymer/wood composite structural member
CN1188174A (en) 1997-01-15 1998-07-22 张恒 Material for making building shutter board
CN1324884A (en) 2001-06-09 2001-12-05 高界平 Method of preparing composite material with waste plastics
CN1827701A (en) 2006-04-14 2006-09-06 徐凌秀 Wood-plastic biological filling and method for making same

Also Published As

Publication number Publication date Type
CN101434751A (en) 2009-05-20 application

Similar Documents

Publication Publication Date Title
CN1482166A (en) Wood plastic composite material and method for producing the same, method for producing panel and sheet made of wood plastic composite
CN1948665A (en) Wood plastic composite material building mould board, its preparation method and use
CN101250944A (en) Multi-layer composite coining building shuttering and manufacture method thereof
US20070082997A1 (en) Composite door structure and method of making same, and composite door and method of making same
CN101955676A (en) Plastic wood composite material and preparation method
CN102140213A (en) Wood plastic composite dalle and preparation method thereof
CN101429813A (en) Production method for solid castoff composite multi-story building template
CN102336989A (en) Polyvinyl chloride (PVC) wood-plastic foaming wood grain section and preparation method thereof
CN102922838A (en) Three-layer coextruded PVC (polyvinylchloride) wood-plastic composite foam board and preparation method thereof
CN101429000A (en) Composite board produced with waste and old plastic and industrial gypsum, and producing method thereof
CN101220209A (en) Production method for composite material of cotton lever and plastics
CN101724190A (en) Asbestos fiber reinforced thermoplastic base wood and plastic composite material and preparing method thereof
CN1821295A (en) Preparing wood-plastic composite material with polyolefin (PE,PP)/oak powder/ionomer
CN1857884A (en) Wood-plastic composite material and production process of composite material plate
CN102020862A (en) Light wood plastic composite and manufacturing method thereof
CN101857703A (en) Formula of straw composite imitation solid wood board
CN102501506A (en) PVC (Poly Vinyl Chloride) wood-plastic foaming composite and preparation method thereof
CN101134848A (en) Clad plate and method for preparing same
CN101596732A (en) Manufacturing method for wood-plastic composite floor
CN101138857A (en) Wood plastic plank stuff production technology and equipment thereof
CN201704945U (en) Novel wood plastic composite building formwork
CN103013149A (en) Container bottom plate and preparation method thereof
CN1850489A (en) Apparatus and method for shaping plastic-wood material with wood grain
CN102501359A (en) Extrusion molding method for POM (Polyoxymethylene) plate
CN103012899A (en) High impact strength wood-plastic composite material as well as preparation method and application thereof

Legal Events

Date Code Title Description
C06 Publication
C10 Request of examination as to substance
C14 Granted
C17 Cessation of patent right