WO2016095304A1 - Method and device for recycling foaming materials - Google Patents

Method and device for recycling foaming materials Download PDF

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Publication number
WO2016095304A1
WO2016095304A1 PCT/CN2015/070717 CN2015070717W WO2016095304A1 WO 2016095304 A1 WO2016095304 A1 WO 2016095304A1 CN 2015070717 W CN2015070717 W CN 2015070717W WO 2016095304 A1 WO2016095304 A1 WO 2016095304A1
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Prior art keywords
screw extruder
recycling
storage bin
stage
block
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PCT/CN2015/070717
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French (fr)
Chinese (zh)
Inventor
吉峥嵘
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江苏微赛新材料科技有限公司
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Priority claimed from CN201410786192.3A external-priority patent/CN104476695A/en
Priority claimed from CN201420803592.6U external-priority patent/CN204382534U/en
Application filed by 江苏微赛新材料科技有限公司 filed Critical 江苏微赛新材料科技有限公司
Publication of WO2016095304A1 publication Critical patent/WO2016095304A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the invention relates to a method and a device for recycling and recycling a foaming material, in particular to a method and a device for recycling and recycling a supercritical microporous foaming material.
  • Foamed materials have the advantages of light weight, heat insulation, buffering, insulation, anti-corrosion, low price, etc., so they are widely used in daily necessities, packaging, industry, agriculture, transportation, military industry, aerospace industry, China since the 1990s The development of foaming materials is very rapid and the consumption is increasing day by day.
  • the production methods of foamed materials mainly include: chemical foaming and physical foaming. Chemical foaming is mainly carried out by injecting a foaming agent; physical foaming is mainly foamed by injecting supercritical carbon dioxide or nitrogen gas, commonly known as "supercritical microcellular foaming".
  • the supercritical microcellular foaming material since its molecular structure does not change only during the foaming process, the supercritical microcellular foaming material is an environmentally friendly and easily recycled foaming material. Due to the particularity of the production and processing of foamed materials, supercritical microcellular foaming materials produce a large amount of scrap during production and processing. Although it is easy to recycle, there is currently no way to truly recycle and reuse supercritical microporous foam materials, especially for large-scale, batch recycling.
  • the invention aims at the above problems, and proposes a recycling and recycling method for foaming materials, which is used for recovering scraps of supercritical microporous foam materials in production and processing, and recycling of foaming materials to solve foaming.
  • the problem of white pollution of materials reduces the environmental burden.
  • a method for recycling and recycling a foamed material according to the present invention is characterized in that Including the following steps:
  • the foaming material is cut into blocks by a cutting machine, and the discharge port of the cutting machine has a sieve hole, and the block material larger than the sieve hole diameter will continue to be cut and cut in the cutter until the block material is smaller than the sieve hole;
  • the block material smaller than the sieve aperture enters the press machine, and under the action of the high pressure roller, the cell of the block material is crushed to form a compacted block; the volume ratio before and after the block material compression determines the recovery efficiency; for example: block The volume of the material is V, the volume V1 after compression, and the recovery yield after compression is 1 times of uncompressed V/V;
  • the gas in the storage bin is gathered and the pressure is increased.
  • a pressure control valve is mounted on the storage bin. To protect the storage bin from being inflated; the storage bin is in a relatively closed working condition, and the stored block is not easily contaminated;
  • a feed valve is installed between the storage bin and the feed hopper of the first-stage screw extruder, and the block material directly enters the first stage under the action of gravity.
  • Feeding hopper of the screw extruder when there is no height difference between the storage bin and the feed hopper of the first-stage screw extruder, the outlet of the storage bin is installed between the outlet of the first-stage screw extruder.
  • the No. 2 fan transports the block in the storage bin to the feed hopper of the first-stage screw extruder through the suction function of the No. 2 fan; due to the suction effect of the fan, the gas in the storage bin is reduced and the pressure is reduced.
  • the pressure control valve on the storage bin can protect the storage bin. Avoid being sucked;
  • the block in the feed hopper is dried at 70-80 ° C; the dried block enters the first-stage screw extruder through the rotation of the first-stage screw, then plasticizes and mixes into a melt; plasticized melt The body is squeezed out;
  • the material extruded by the first-stage screw In order to drain the bubbles in the melt and mix them evenly, the material extruded by the first-stage screw directly enters the feed hopper of the secondary screw, and enters the secondary screw extruder through the rotation of the secondary screw, in the secondary screw Under the action of shearing force, the mixed and plasticized melt is extruded;
  • the extruded melt is passed through an underwater pelletizer, cooled, and pelletized; the chopped particles continue to be used for extrusion of the foamed master.
  • the parameters of the first-stage screw extruder are set as follows: screw temperature 160-250 ° C, die temperature 160-180 ° C, melt pressure 5-15 MPa, main engine speed 10-50 rpm.
  • the parameters of the secondary screw extruder are set as follows: screw temperature 160-250 ° C, die temperature 160-180 ° C, melt pressure 5-15 MPa, main engine speed 10-50 rpm.
  • the invention also provides an apparatus for recycling and recycling foamed materials, which comprises: a cutting machine, a presser, a first fan and a storage bin connected in sequence; the outlet of the storage bin passes through the feed valve Or the second fan is connected to the feed hopper of the first-stage screw extruder, and the first-stage screw extruder is connected to the secondary screw extruder, and the secondary screw extruder is connected to the underwater pelletizer.
  • a pressure control valve is arranged above the storage bin.
  • the method and the device of the invention can recover the foaming material, and recycle the rebirth Use, reduce white pollution, reduce the consumption of raw materials, and save energy.
  • Figure 1 is a schematic view showing the structure of the equipment when the storage bin is installed at a high position relative to the feed hopper of the first-stage screw extruder;
  • FIG. 2 is a schematic view showing the structure of the device when there is no height difference between the storage bin and the feed hopper of the first-stage screw extruder;
  • 1 cutting machine 1 pressing machine, 3 first fan, 4 storage bin, 5 first screw extruder feeding hopper, 6 first screw extruder, 7 second screw extruder, 8 underwater pelletizer, 9 feed valve, 10 second fan, 11 pressure control valve.
  • the cutting machine 1 is opened, and the foaming material is fed into the cutting machine 1. Under the cutting action of the cutting machine 1, the foaming material is cut into blocks, and the blocks passing through the mesh holes are compacted by the press machine 2
  • the first fan 3 is transported to the storage bin 4 for temporary storage, and a pressure control valve 11 is disposed above the storage bin 4.
  • the feed valve 9 is opened, and at this time, the block material enters the feed hopper 5 of the first-stage screw extruder 6 under the action of gravity, and the block material in the feed hopper is at 77. Dry at °C.
  • the dried block is transferred into the first-stage screw extruder 6 by the rotation of the first-stage screw, then plasticized and mixed into a melt.
  • the parameters of the first-stage screw extruder 6 are set as follows: the screw temperature is 172 ° C, the die The temperature was 166 ° C, the melt pressure was 13 MPa, and the main engine speed was 14 rpm.
  • the plasticized melt is extruded directly into the feed hopper of the secondary screw extruder 7, and is rotated into the secondary screw extruder 7 by the rotation of the secondary screw, and mixed under the action of the shearing force of the screw.
  • the parameters of the secondary screw extruder 7 were set as follows: screw temperature 169 ° C, die temperature 164 ° C, melt pressure 14 MPa, main engine speed 12 rpm.
  • the plasticized melt is extruded. It is cooled and pelletized by an underwater pelletizer 8. The particles of the foamed raw material were obtained.
  • the cutting machine 1 is opened, and the foaming material is fed into the cutting machine 1. Under the cutting action of the cutting machine 1, the foaming material is cut into blocks, and the blocks passing through the mesh holes are compacted by the press machine 2
  • the first fan 3 is transported to the storage bin 4 for temporary storage, and a pressure control valve 11 is disposed above the storage bin 4.
  • the feed valve 9 opens the No. 2 fan 10, and at this time, the wind suction force of the block enters the feed hopper 5 of the first-stage screw extruder 6, and the block in the feed hopper Material, dried at 75 ° C.
  • the dried block is transferred into the first-stage screw extruder 6 by the rotation of the first-stage screw, then plasticized and mixed into a melt.
  • the parameters of the first-stage screw extruder 6 are set as follows: screw temperature 175 ° C, die The temperature was 168 ° C, the melt pressure was 11 MPa, and the main engine speed was 15 rpm.
  • the plasticized melt is extruded directly into the feed hopper of the secondary screw extruder 7, and is rotated into the secondary screw extruder 7 by the rotation of the secondary screw, and mixed under the action of the shearing force of the screw.
  • the parameters of the secondary screw extruder 7 were set to: screw temperature 170 ° C, die temperature 165 ° C, melt pressure 13 MPa, main engine speed 11 rpm.
  • the plasticized melt is extruded. It is cooled and pelletized by an underwater pelletizer 8.
  • the particles of the foamed raw material were obtained. The particles were extruded to form a sheet, and re-expanded to obtain a foamed sheet, and the sheet properties were not different.
  • the cutting machine 1 is opened, and the foaming material is fed into the cutting machine 1. Under the cutting action of the cutting machine 1, the foaming material is cut into blocks, and the blocks passing through the mesh holes are compacted by the press machine 2
  • the first fan 3 is transported to the storage bin 4 for temporary storage, and a pressure control valve 11 is disposed above the storage bin 4.
  • the feed valve 9 is opened, and at this time, the block material enters the feed hopper 5 of the first-stage screw extruder 6 under the action of gravity, and the block material in the feed hopper, Dry at 70 °C.
  • the dried block enters the first-stage screw extruder 6 by the rotation of the first-stage screw, and then plasticized and mixed into a melt.
  • the parameters of the first-stage screw extruder 6 are set as follows: the screw temperature is 160 ° C, and the die is set. The temperature was 160 ° C, the melt pressure was 15 MPa, and the main engine speed was 50 rpm.
  • the plasticized melt is extruded directly into the feed hopper of the secondary screw extruder 7, and is rotated into the secondary screw extruder 7 by the rotation of the secondary screw, and mixed under the action of the shearing force of the screw.
  • the parameters of the secondary screw extruder 7 were set as follows: screw temperature 250 ° C, die temperature 180 ° C, melt pressure 5 MPa, main engine speed 10 rpm.
  • the plasticized melt is extruded. It is cooled and pelletized by an underwater pelletizer 8. The particles of the foamed raw material were obtained.
  • the cutting machine 1 is opened, and the foaming material is fed into the cutting machine 1. Under the cutting action of the cutting machine 1, the foaming material is cut into blocks, and the blocks passing through the mesh holes are compacted by the press machine 2
  • the first fan 3 is transported to the storage bin 4 for temporary storage, and a pressure control valve 11 is disposed above the storage bin 4.
  • the fan No. 2 is opened, and at this time, the wind suction of the block enters the feed hopper 5 of the first-stage screw extruder 6, and the block material in the feed hopper is at 80. Dry at °C. The dried block enters the first-stage screw extruder 6 by the rotation of the first-stage screw, and then plasticized and mixed into a melt.
  • the parameters of the first-stage screw extruder 6 are set as follows: the screw temperature is 250 ° C, the die The temperature was 180 ° C, the melt pressure was 5 MPa, and the main engine speed was 10 rpm.
  • the plasticized melt is extruded directly into the feed hopper of the secondary screw extruder 7, and is rotated into the secondary screw extruder 7 by the rotation of the secondary screw, and mixed under the action of the shearing force of the screw.
  • the parameters of the secondary screw extruder 7 were set as follows: screw temperature 160 ° C, die temperature 160 ° C, melt pressure 15 MPa, main engine speed 50 rpm.
  • the plasticized melt is extruded. It is cooled and pelletized by an underwater pelletizer 8. The particles of the foamed raw material were obtained. The particle The sheet was extruded to be re-foamed to obtain a foamed sheet, and there was no difference in sheet properties.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

The present invention provides a method and device for recycling foaming materials. A material cutter, a material pressing machine, a first fan, a material storage bin, a primary screw extruder, a secondary screw extruder and an underwater granulator that are connected in sequence are used for recycling leftover materials of supercritical microcellular foaming materials in the production and machining process and recycling the foaming materials, so that the problem of white pollution of the foaming materials is solved, and the environmental burden is alleviated.

Description

一种发泡材料的回收再利用方法及设备Method and device for recycling and recycling foaming material 技术领域Technical field
本发明涉及一种发泡材料的回收再利用方法及设备，尤其涉及超临界微孔发泡材料的回收再利用方法和设备。The invention relates to a method and a device for recycling and recycling a foaming material, in particular to a method and a device for recycling and recycling a supercritical microporous foaming material.
背景技术Background technique
发泡材料具有质轻、隔热、缓冲、绝缘、防腐、价格低廉等优点，因此在日用品、包装、工业、农业、交通运输业、军事工业、航天工业得到广泛应用，我国20世纪90年代以来发泡材料的发展十分迅速，消耗量与日俱增。目前发泡材料的生产方法主要包括：化学发泡和物理发泡。化学发泡主要通过注入发泡剂进行发泡；物理发泡则主要通过注入超临界二氧化碳或氮气进行发泡，俗称“超临界微孔发泡”。对于超临界微孔发泡材料由于其在发泡过程只发生物理反应，其分子结构没有发生变化，所以超临界微孔发泡材料是环境友好，易于回收的发泡材料。由于发泡材料生产和加工的特殊性，超临界微孔发泡材料在生产、加工过程中会产生大量的边角料。虽其易于回收，但是目前还没有一种方法真正实现超临界微孔发泡材料的回收再利用，特别对于大规模、批量的回收循环使用。Foamed materials have the advantages of light weight, heat insulation, buffering, insulation, anti-corrosion, low price, etc., so they are widely used in daily necessities, packaging, industry, agriculture, transportation, military industry, aerospace industry, China since the 1990s The development of foaming materials is very rapid and the consumption is increasing day by day. At present, the production methods of foamed materials mainly include: chemical foaming and physical foaming. Chemical foaming is mainly carried out by injecting a foaming agent; physical foaming is mainly foamed by injecting supercritical carbon dioxide or nitrogen gas, commonly known as "supercritical microcellular foaming". For the supercritical microporous foaming material, since its molecular structure does not change only during the foaming process, the supercritical microcellular foaming material is an environmentally friendly and easily recycled foaming material. Due to the particularity of the production and processing of foamed materials, supercritical microcellular foaming materials produce a large amount of scrap during production and processing. Although it is easy to recycle, there is currently no way to truly recycle and reuse supercritical microporous foam materials, especially for large-scale, batch recycling.
发明内容Summary of the invention
本发明针对以上问题，提出一种发泡材料的回收再利用方法，用于回收超临界微孔发泡材料在生产、加工过程中的边角料，以及发泡材料的循环再利用，以解决发泡材料的白色污染问题，减轻环境负担。The invention aims at the above problems, and proposes a recycling and recycling method for foaming materials, which is used for recovering scraps of supercritical microporous foam materials in production and processing, and recycling of foaming materials to solve foaming. The problem of white pollution of materials reduces the environmental burden.
本发明提出的一种发泡材料的回收再利用方法，其特征在于，包 括如下步骤：A method for recycling and recycling a foamed material according to the present invention is characterized in that Including the following steps:
1)切料1) Cutting material
通过切料机将发泡材料切割成块料，切料机出料口有分筛孔，大于分筛孔径的块料将继续在切料机中循环切割，直到块料小于分筛孔径；The foaming material is cut into blocks by a cutting machine, and the discharge port of the cutting machine has a sieve hole, and the block material larger than the sieve hole diameter will continue to be cut and cut in the cutter until the block material is smaller than the sieve hole;
2)压料2) Pressing material
小于分筛孔径的块料，进入压料机，在高压滚轮的作用下，压破块料的泡孔，形成压实的块料；块料压缩前后的体积比将决定回收效率；例如：块料体积为V，压缩后体积V1，压缩后的回收产量是未经压缩的V/V1倍；The block material smaller than the sieve aperture enters the press machine, and under the action of the high pressure roller, the cell of the block material is crushed to form a compacted block; the volume ratio before and after the block material compression determines the recovery efficiency; for example: block The volume of the material is V, the volume V1 after compression, and the recovery yield after compression is 1 times of uncompressed V/V;
3)块料的输送3) Transportation of blocks
通过一号风机，压缩后的块料被输送到储料仓；Through the No. 1 fan, the compressed block is transported to the storage bin;
4)储料4) Storage
在输送块料至储料仓的过程中，由于一号风机的鼓风作用，储料仓中气体聚集，压力升高，为防止储料仓压力过高，储料仓上装有压力控制阀，以保护储料仓，避免被吹胀；储料仓处于相对密闭的工况，存储的块料不易被污染；During the process of conveying the block material to the storage bin, due to the blasting action of the No. 1 fan, the gas in the storage bin is gathered and the pressure is increased. To prevent the pressure in the storage bin from being too high, a pressure control valve is mounted on the storage bin. To protect the storage bin from being inflated; the storage bin is in a relatively closed working condition, and the stored block is not easily contaminated;
5)块料的输送5) Transportation of blocks
当储料仓相对一级螺杆挤出机的进料斗高位安装时，储料仓和一级螺杆挤出机的进料斗之间安装进料阀，块料在重力作用下直接进入一级螺杆挤出机的进料斗；当储料仓与一级螺杆挤出机的进料斗之间没有高差时，储料仓的出口与一级螺杆挤出机的进料斗之间安装二号风机，通过二号风机的吸力作用将储料仓中的块料输送到一级螺杆挤出机的进料斗中；由于风机的吸力作用，储料仓中气体减少，压力降低。防止储料仓压力过低，储料仓上的压力控制阀，可以保护储料仓， 避免被吸瘪；When the storage bin is installed at a high level relative to the feed hopper of the first-stage screw extruder, a feed valve is installed between the storage bin and the feed hopper of the first-stage screw extruder, and the block material directly enters the first stage under the action of gravity. Feeding hopper of the screw extruder; when there is no height difference between the storage bin and the feed hopper of the first-stage screw extruder, the outlet of the storage bin is installed between the outlet of the first-stage screw extruder The No. 2 fan transports the block in the storage bin to the feed hopper of the first-stage screw extruder through the suction function of the No. 2 fan; due to the suction effect of the fan, the gas in the storage bin is reduced and the pressure is reduced. To prevent the pressure in the storage bin from being too low, the pressure control valve on the storage bin can protect the storage bin. Avoid being sucked;
6)一级螺杆挤出6) Primary screw extrusion
进料斗中的块料，在70-80℃烘干；干燥好的块料通过一级螺杆的转动进入一级螺杆挤出机中，然后塑化，混合为熔体；塑化好的熔体被挤出；The block in the feed hopper is dried at 70-80 ° C; the dried block enters the first-stage screw extruder through the rotation of the first-stage screw, then plasticizes and mixes into a melt; plasticized melt The body is squeezed out;
7)二级螺杆挤出7) Secondary screw extrusion
为了排净熔体中的气泡，使其混合均匀，一级螺杆挤出的料直接进入二级螺杆的进料斗，通过二级螺杆的转动进入二级螺杆挤出机中，在二级螺杆剪切力的作用下，混合，塑化好的熔体被挤出；In order to drain the bubbles in the melt and mix them evenly, the material extruded by the first-stage screw directly enters the feed hopper of the secondary screw, and enters the secondary screw extruder through the rotation of the secondary screw, in the secondary screw Under the action of shearing force, the mixed and plasticized melt is extruded;
8)造粒8) Granulation
挤出的熔体通过水下切粒机，冷却，切粒；切好的粒子继续用于发泡母板的挤出。The extruded melt is passed through an underwater pelletizer, cooled, and pelletized; the chopped particles continue to be used for extrusion of the foamed master.
所述一级螺杆挤出机的参数设定为：螺杆温度160-250℃，模头温度160-180℃，熔体压力5-15MPa，主机转速10-50rpm。The parameters of the first-stage screw extruder are set as follows: screw temperature 160-250 ° C, die temperature 160-180 ° C, melt pressure 5-15 MPa, main engine speed 10-50 rpm.
所述二级螺杆挤出机的参数设定为：螺杆温度160-250℃，模头温度160-180℃，熔体压力5-15MPa，主机转速10-50rpm。The parameters of the secondary screw extruder are set as follows: screw temperature 160-250 ° C, die temperature 160-180 ° C, melt pressure 5-15 MPa, main engine speed 10-50 rpm.
本发明还提供了一种发泡材料的回收再利用的设备，其特征在于，包括依次相连的切料机、压料机、一号风机和储料仓；储料仓的出口通过进料阀或二号风机连接一级螺杆挤出机的进料斗，所述一级螺杆挤出机与二级螺杆挤出机相连，所述二级螺杆挤出机与水下切粒机相连。The invention also provides an apparatus for recycling and recycling foamed materials, which comprises: a cutting machine, a presser, a first fan and a storage bin connected in sequence; the outlet of the storage bin passes through the feed valve Or the second fan is connected to the feed hopper of the first-stage screw extruder, and the first-stage screw extruder is connected to the secondary screw extruder, and the secondary screw extruder is connected to the underwater pelletizer.
所述储料仓上方设有压力控制阀。A pressure control valve is arranged above the storage bin.
本发明所述的方法和设备可以将发泡材料进行回收，循环再利 用，减少白色污染，减少原材料的消耗，节约能源。The method and the device of the invention can recover the foaming material, and recycle the rebirth Use, reduce white pollution, reduce the consumption of raw materials, and save energy.
附图说明DRAWINGS
图1为储料仓相对一级螺杆挤出机的进料斗高位安装时的设备结构示意图；Figure 1 is a schematic view showing the structure of the equipment when the storage bin is installed at a high position relative to the feed hopper of the first-stage screw extruder;
图2为储料仓与一级螺杆挤出机的进料斗之间没有高差时的的设备结构示意图；2 is a schematic view showing the structure of the device when there is no height difference between the storage bin and the feed hopper of the first-stage screw extruder;
其中：1 切料机，2 压料机，3 一号风机，4 储料仓，5 一级螺杆挤出机的进料斗，6 一级螺杆挤出机，7 二级螺杆挤出机，8 水下切粒机，9 进料阀，10 二号风机，11 压力控制阀。Among them: 1 cutting machine, 2 pressing machine, 3 first fan, 4 storage bin, 5 first screw extruder feeding hopper, 6 first screw extruder, 7 second screw extruder, 8 underwater pelletizer, 9 feed valve, 10 second fan, 11 pressure control valve.
具体实施方式detailed description
实施例1Example 1
开启切料机1，将发泡材料喂入切料机1，在切料机1的切割作用下，发泡材料被切成块料，通过筛孔的块料经压料机2压实后，经一号风机3输送到储料仓4暂时存储，所述储料仓4上方设有压力控制阀11。待储料仓4存储量达到一定量时，开启进料阀9，此时块料在重力作用下进入一级螺杆挤出机6的进料斗5，进料斗中的块料，在77℃烘干。干燥好的块料通过一级螺杆的转动进入一级螺杆挤出机6中，然后塑化，混合为熔体，一级螺杆挤出机6的参数设定为：螺杆温度172℃，模头温度166℃，熔体压力13MPa，主机转速14rpm。塑化好的熔体被挤出直接进入二级螺杆挤出机7的进料斗，通过二级螺杆的转动进入二级螺杆挤出机7中，在螺杆剪切力的作用下，混合，二级螺杆挤出机7的参数设定为：螺杆温度169℃，模头温度164℃，熔体压力14MPa，主机转速12rpm。塑化好的熔体被挤出。通过水下切粒机8，冷却，切粒。得到发泡原料的粒子。 The cutting machine 1 is opened, and the foaming material is fed into the cutting machine 1. Under the cutting action of the cutting machine 1, the foaming material is cut into blocks, and the blocks passing through the mesh holes are compacted by the press machine 2 The first fan 3 is transported to the storage bin 4 for temporary storage, and a pressure control valve 11 is disposed above the storage bin 4. When the storage amount of the storage bin 4 reaches a certain amount, the feed valve 9 is opened, and at this time, the block material enters the feed hopper 5 of the first-stage screw extruder 6 under the action of gravity, and the block material in the feed hopper is at 77. Dry at °C. The dried block is transferred into the first-stage screw extruder 6 by the rotation of the first-stage screw, then plasticized and mixed into a melt. The parameters of the first-stage screw extruder 6 are set as follows: the screw temperature is 172 ° C, the die The temperature was 166 ° C, the melt pressure was 13 MPa, and the main engine speed was 14 rpm. The plasticized melt is extruded directly into the feed hopper of the secondary screw extruder 7, and is rotated into the secondary screw extruder 7 by the rotation of the secondary screw, and mixed under the action of the shearing force of the screw. The parameters of the secondary screw extruder 7 were set as follows: screw temperature 169 ° C, die temperature 164 ° C, melt pressure 14 MPa, main engine speed 12 rpm. The plasticized melt is extruded. It is cooled and pelletized by an underwater pelletizer 8. The particles of the foamed raw material were obtained.
实施例2Example 2
开启切料机1，将发泡材料喂入切料机1，在切料机1的切割作用下，发泡材料被切成块料，通过筛孔的块料经压料机2压实后，经一号风机3输送到储料仓4暂时存储，所述储料仓4上方设有压力控制阀11。待储料仓4存储量达到一定量时，进料阀9开启二号风机10，此时块料风力吸力作用下进入一级螺杆挤出机6的进料斗5，进料斗中的块料，在75℃烘干。干燥好的块料通过一级螺杆的转动进入一级螺杆挤出机6中，然后塑化，混合为熔体，一级螺杆挤出机6的参数设定为：螺杆温度175℃，模头温度168℃，熔体压力11MPa，主机转速15rpm。塑化好的熔体被挤出直接进入二级螺杆挤出机7的进料斗，通过二级螺杆的转动进入二级螺杆挤出机7中，在螺杆剪切力的作用下，混合，二级螺杆挤出机7的参数设定为：螺杆温度170℃，模头温度165℃，熔体压力13MPa，主机转速11rpm。塑化好的熔体被挤出。通过水下切粒机8，冷却，切粒。得到发泡原料的粒子。该粒子经挤出形成板材，进行重新发泡，得到发泡板材，板材性能没有差异。The cutting machine 1 is opened, and the foaming material is fed into the cutting machine 1. Under the cutting action of the cutting machine 1, the foaming material is cut into blocks, and the blocks passing through the mesh holes are compacted by the press machine 2 The first fan 3 is transported to the storage bin 4 for temporary storage, and a pressure control valve 11 is disposed above the storage bin 4. When the storage capacity of the storage bin 4 reaches a certain amount, the feed valve 9 opens the No. 2 fan 10, and at this time, the wind suction force of the block enters the feed hopper 5 of the first-stage screw extruder 6, and the block in the feed hopper Material, dried at 75 ° C. The dried block is transferred into the first-stage screw extruder 6 by the rotation of the first-stage screw, then plasticized and mixed into a melt. The parameters of the first-stage screw extruder 6 are set as follows: screw temperature 175 ° C, die The temperature was 168 ° C, the melt pressure was 11 MPa, and the main engine speed was 15 rpm. The plasticized melt is extruded directly into the feed hopper of the secondary screw extruder 7, and is rotated into the secondary screw extruder 7 by the rotation of the secondary screw, and mixed under the action of the shearing force of the screw. The parameters of the secondary screw extruder 7 were set to: screw temperature 170 ° C, die temperature 165 ° C, melt pressure 13 MPa, main engine speed 11 rpm. The plasticized melt is extruded. It is cooled and pelletized by an underwater pelletizer 8. The particles of the foamed raw material were obtained. The particles were extruded to form a sheet, and re-expanded to obtain a foamed sheet, and the sheet properties were not different.
实施例3Example 3
开启切料机1，将发泡材料喂入切料机1，在切料机1的切割作用下，发泡材料被切成块料，通过筛孔的块料经压料机2压实后，经一号风机3输送到储料仓4暂时存储，所述储料仓4上方设有压力控制阀11。待储料仓4存储量达到一定量时，开启进料阀9，此时块料在重力作用下进入一级螺杆挤出机6的进料斗5，进料斗中的块料， 在70℃烘干。干燥好的块料通过一级螺杆的转动进入一级螺杆挤出机6中，然后塑化，混合为熔体，一级螺杆挤出机6的参数设定为：螺杆温度160℃，模头温度160℃，熔体压力15MPa，主机转速50rpm。塑化好的熔体被挤出直接进入二级螺杆挤出机7的进料斗，通过二级螺杆的转动进入二级螺杆挤出机7中，在螺杆剪切力的作用下，混合，二级螺杆挤出机7的参数设定为：螺杆温度250℃，模头温度180℃，熔体压力5MPa，主机转速10rpm。塑化好的熔体被挤出。通过水下切粒机8，冷却，切粒。得到发泡原料的粒子。The cutting machine 1 is opened, and the foaming material is fed into the cutting machine 1. Under the cutting action of the cutting machine 1, the foaming material is cut into blocks, and the blocks passing through the mesh holes are compacted by the press machine 2 The first fan 3 is transported to the storage bin 4 for temporary storage, and a pressure control valve 11 is disposed above the storage bin 4. When the storage amount of the storage bin 4 reaches a certain amount, the feed valve 9 is opened, and at this time, the block material enters the feed hopper 5 of the first-stage screw extruder 6 under the action of gravity, and the block material in the feed hopper, Dry at 70 °C. The dried block enters the first-stage screw extruder 6 by the rotation of the first-stage screw, and then plasticized and mixed into a melt. The parameters of the first-stage screw extruder 6 are set as follows: the screw temperature is 160 ° C, and the die is set. The temperature was 160 ° C, the melt pressure was 15 MPa, and the main engine speed was 50 rpm. The plasticized melt is extruded directly into the feed hopper of the secondary screw extruder 7, and is rotated into the secondary screw extruder 7 by the rotation of the secondary screw, and mixed under the action of the shearing force of the screw. The parameters of the secondary screw extruder 7 were set as follows: screw temperature 250 ° C, die temperature 180 ° C, melt pressure 5 MPa, main engine speed 10 rpm. The plasticized melt is extruded. It is cooled and pelletized by an underwater pelletizer 8. The particles of the foamed raw material were obtained.
实施例4Example 4
开启切料机1，将发泡材料喂入切料机1，在切料机1的切割作用下，发泡材料被切成块料，通过筛孔的块料经压料机2压实后，经一号风机3输送到储料仓4暂时存储，所述储料仓4上方设有压力控制阀11。待储料仓4存储量达到一定量时，开启二号风机10，此时块料风力吸力作用下进入一级螺杆挤出机6的进料斗5，进料斗中的块料，在80℃烘干。干燥好的块料通过一级螺杆的转动进入一级螺杆挤出机6中，然后塑化，混合为熔体，一级螺杆挤出机6的参数设定为：螺杆温度250℃，模头温度180℃，熔体压力5MPa，主机转速10rpm。塑化好的熔体被挤出直接进入二级螺杆挤出机7的进料斗，通过二级螺杆的转动进入二级螺杆挤出机7中，在螺杆剪切力的作用下，混合，二级螺杆挤出机7的参数设定为：螺杆温度160℃，模头温度160℃，熔体压力15MPa，主机转速50rpm。塑化好的熔体被挤出。通过水下切粒机8，冷却，切粒。得到发泡原料的粒子。该粒子 经挤出形成板材，进行重新发泡，得到发泡板材，板材性能没有差异。 The cutting machine 1 is opened, and the foaming material is fed into the cutting machine 1. Under the cutting action of the cutting machine 1, the foaming material is cut into blocks, and the blocks passing through the mesh holes are compacted by the press machine 2 The first fan 3 is transported to the storage bin 4 for temporary storage, and a pressure control valve 11 is disposed above the storage bin 4. When the storage capacity of the storage bin 4 reaches a certain amount, the fan No. 2 is opened, and at this time, the wind suction of the block enters the feed hopper 5 of the first-stage screw extruder 6, and the block material in the feed hopper is at 80. Dry at °C. The dried block enters the first-stage screw extruder 6 by the rotation of the first-stage screw, and then plasticized and mixed into a melt. The parameters of the first-stage screw extruder 6 are set as follows: the screw temperature is 250 ° C, the die The temperature was 180 ° C, the melt pressure was 5 MPa, and the main engine speed was 10 rpm. The plasticized melt is extruded directly into the feed hopper of the secondary screw extruder 7, and is rotated into the secondary screw extruder 7 by the rotation of the secondary screw, and mixed under the action of the shearing force of the screw. The parameters of the secondary screw extruder 7 were set as follows: screw temperature 160 ° C, die temperature 160 ° C, melt pressure 15 MPa, main engine speed 50 rpm. The plasticized melt is extruded. It is cooled and pelletized by an underwater pelletizer 8. The particles of the foamed raw material were obtained. The particle The sheet was extruded to be re-foamed to obtain a foamed sheet, and there was no difference in sheet properties.

Claims (5)

  1. 一种发泡材料的回收再利用方法，其特征在于，包括如下步骤：A method for recycling and recycling a foamed material, comprising the steps of:
    1)切料1) Cutting material
    通过切料机将发泡材料切割成块料，切料机出料口有分筛孔，大于分筛孔径的块料将继续在切料机中循环切割，直到块料小于分筛孔径；The foaming material is cut into blocks by a cutting machine, and the discharge port of the cutting machine has a sieve hole, and the block material larger than the sieve hole diameter will continue to be cut and cut in the cutter until the block material is smaller than the sieve hole;
    2)压料2) Pressing material
    小于分筛孔径的块料，进入压料机，在高压滚轮的作用下，压破块料的泡孔，形成压实的块料；The block material smaller than the sieve aperture enters the press machine, and under the action of the high pressure roller, the cell of the block material is crushed to form a compacted block material;
    3)块料的输送3) Transportation of blocks
    通过一号风机，压缩后的块料被输送到储料仓；Through the No. 1 fan, the compressed block is transported to the storage bin;
    4)储料4) Storage
    储料仓上装有压力控制阀；a pressure control valve is mounted on the storage bin;
    5)块料的输送5) Transportation of blocks
    当储料仓相对一级螺杆挤出机的进料斗高位安装时，储料仓和一级螺杆挤出机的进料斗之间安装进料阀，块料在重力作用下直接进入一级螺杆挤出机的进料斗；当储料仓与一级螺杆挤出机的进料斗之间没有高差时，储料仓的出口与一级螺杆挤出机的进料斗之间安装二号风机，通过二号风机的吸力作用将储料仓中的块料输送到一级螺杆挤出机的进料斗中；When the storage bin is installed at a high level relative to the feed hopper of the first-stage screw extruder, a feed valve is installed between the storage bin and the feed hopper of the first-stage screw extruder, and the block material directly enters the first stage under the action of gravity. Feeding hopper of the screw extruder; when there is no height difference between the storage bin and the feed hopper of the first-stage screw extruder, the outlet of the storage bin is installed between the outlet of the first-stage screw extruder Fan No. 2, the block material in the storage bin is transported into the feeding hopper of the first-stage screw extruder by the suction function of the No. 2 fan;
    6)一级螺杆挤出6) Primary screw extrusion
    进料斗中的块料，在70-80℃烘干；干燥好的块料通过一级螺杆的转动进入一级螺杆挤出机中，然后塑化，混合为熔体；塑化好的熔体被挤出；The block in the feed hopper is dried at 70-80 ° C; the dried block enters the first-stage screw extruder through the rotation of the first-stage screw, then plasticizes and mixes into a melt; plasticized melt The body is squeezed out;
    7)二级螺杆挤出 7) Secondary screw extrusion
    为了排净熔体中的气泡，使其混合均匀，一级螺杆挤出的料直接进入二级螺杆的进料斗，通过二级螺杆的转动进入二级螺杆挤出机中，在二级螺杆剪切力的作用下，混合，塑化好的熔体被挤出；In order to drain the bubbles in the melt and mix them evenly, the material extruded by the first-stage screw directly enters the feed hopper of the secondary screw, and enters the secondary screw extruder through the rotation of the secondary screw, in the secondary screw Under the action of shearing force, the mixed and plasticized melt is extruded;
    8)造粒8) Granulation
    挤出的熔体通过水下切粒机，冷却，切粒；切好的粒子继续用于发泡母板的挤出。The extruded melt is passed through an underwater pelletizer, cooled, and pelletized; the chopped particles continue to be used for extrusion of the foamed master.
  2. 根据权利要求1所述的发泡材料的回收再利用方法，其特征在于，所述一级螺杆挤出机的参数设定为：螺杆温度160-250℃，模头温度160-180℃，熔体压力5-15MPa，主机转速10-50rpm。The method for recycling and recycling a foamed material according to claim 1, wherein the parameter of the first-stage screw extruder is set to: a screw temperature of 160-250 ° C, a die temperature of 160-180 ° C, and a melting. The body pressure is 5-15 MPa, and the main engine speed is 10-50 rpm.
  3. 根据权利要求1或2所述的发泡材料的回收再利用方法，其特征在于，所述二级螺杆挤出机的参数设定为：螺杆温度160-250℃，模头温度160-180℃，熔体压力5-15MPa，主机转速10-50rpm。The method for recycling and recycling a foamed material according to claim 1 or 2, wherein the parameter of the secondary screw extruder is set to a screw temperature of 160 to 250 ° C and a die temperature of 160 to 180 ° C. The melt pressure is 5-15 MPa, and the main engine speed is 10-50 rpm.
  4. 一种发泡材料的回收再利用的设备，其特征在于，包括依次相连的切料机、压料机、一号风机和储料仓；储料仓的出口通过进料阀或二号风机连接一级螺杆挤出机的进料斗，所述一级螺杆挤出机与二级螺杆挤出机相连，所述二级螺杆挤出机与水下切粒机相连。The utility model relates to a recycling and recycling device for foaming materials, which comprises a cutting machine, a pressing machine, a first fan and a storage bin connected in sequence; the outlet of the storage bin is connected through a feed valve or a second fan A feed hopper of a first stage screw extruder, the first stage screw extruder being connected to a secondary screw extruder, the secondary screw extruder being connected to an underwater pelletizer.
  5. 根据权利要求4所述的一种发泡材料的回收再利用的设备，其特征在于，所述储料仓上方设有压力控制阀。 The apparatus for recycling and recycling a foamed material according to claim 4, wherein a pressure control valve is disposed above the storage bin.
PCT/CN2015/070717 2014-12-18 2015-01-15 Method and device for recycling foaming materials WO2016095304A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201420803592.6 2014-12-18
CN201410786192.3A CN104476695A (en) 2014-12-18 2014-12-18 Method and equipment for recycling and reusing foamed materials
CN201420803592.6U CN204382534U (en) 2014-12-18 2014-12-18 A kind of equipment of recycling of expanded material
CN201410786192.3 2014-12-18

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Publication number Priority date Publication date Assignee Title
US12053908B2 (en) 2021-02-01 2024-08-06 Regen Fiber, Llc Method and system for recycling wind turbine blades

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JPH04267110A (en) * 1991-02-21 1992-09-22 Mitsubishi Kasei Corp Reusing method of waste at time of working of laminate
WO2002038276A1 (en) * 2000-11-01 2002-05-16 Yash Vasant Joshi Method for direct recycling of plastic wastes
CN101200103A (en) * 2007-12-06 2008-06-18 屠德洲 One-step method heat foamed plastic granulitization method and main engine
CN101204837A (en) * 2007-10-12 2008-06-25 东莞市蓝冠机械设备有限公司 Discarded high foaming plastics regeneration pelleting process
CN101486234A (en) * 2008-12-24 2009-07-22 冯龙初 Environment friendly recycling prilling unit for plastic foam

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04267110A (en) * 1991-02-21 1992-09-22 Mitsubishi Kasei Corp Reusing method of waste at time of working of laminate
WO2002038276A1 (en) * 2000-11-01 2002-05-16 Yash Vasant Joshi Method for direct recycling of plastic wastes
CN101204837A (en) * 2007-10-12 2008-06-25 东莞市蓝冠机械设备有限公司 Discarded high foaming plastics regeneration pelleting process
CN101200103A (en) * 2007-12-06 2008-06-18 屠德洲 One-step method heat foamed plastic granulitization method and main engine
CN101486234A (en) * 2008-12-24 2009-07-22 冯龙初 Environment friendly recycling prilling unit for plastic foam

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12053908B2 (en) 2021-02-01 2024-08-06 Regen Fiber, Llc Method and system for recycling wind turbine blades

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