A kind of production method of polyurethane foam powder solid waste particles

A technology of polyurethane foam and production method, applied in coating and other directions, can solve the problems of increased transportation and storage costs, low solid waste density, increased production costs, etc., so as to reduce transportation costs and storage costs, reduce dust generation, reduce The effect of production cost

Active Publication Date: 2022-04-01
ANHUI SENTAI WPC GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such application has the following problems: due to the low solid waste density of polyurethane foam powder, when it is directly added to the board, to meet the production amount, the foam powder required is huge, which greatly increases the cost of transportation and storage, and the output is low, which will increase Production cost; and adding after compression can increase the output to a certain extent, but it cannot solve the problem of high transportation and storage costs, and it also puts forward higher requirements for process equipment
Therefore, it is difficult to popularize the application of polyurethane foam powder solid waste in boards

Method used

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  • A kind of production method of polyurethane foam powder solid waste particles
  • A kind of production method of polyurethane foam powder solid waste particles
  • A kind of production method of polyurethane foam powder solid waste particles

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Embodiment

[0031] A kind of production method of polyurethane foam powder solid waste particle, the equipment that needs to use such as figure 1 As shown, it includes an elevator 1, a screw compressor 2, a pressurized hopper 3, a counter-roll granulator 4, a first roller granulator 5, a second roller granulator 6, and a sieving machine 7 arranged in sequence. ; The discharge end of the screw compressor 2 is provided with a briquetting block for adjusting the discharge density; the pressurized hopper 3 is provided with a spiral stirring paddle 8, which is used to stir and pressurize the initially agglomerated material to the pair of rollers Granulator 4, the paddle distribution of screw paddle 8 is dense at the top and sparse at the bottom; the roller granulator 4 includes the pair of rollers 9 with die holes 91 on the surface, and the two pairs of rollers 9 are bonded and extruded The material is molded into granules (such as figure 2 shown); the first roller granulator 5 and the secon...

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Abstract

The invention belongs to the technical field of polyurethane solid waste recycling and specifically discloses a production method of solid waste particles of polyurethane foam powder, including the steps of mixing, compressing, counter-roll shaping, pressing roll granulation and sorting. The whole process goes through Four times of compression, and by adding adhesives to improve the bonding strength between polyurethane foam powder, can reduce the volume of solid waste of polyurethane foam powder by more than 15 times, and the particles have good compactness and uniform size. The invention can greatly reduce the transportation cost and storage cost of solid waste of polyurethane foam powder, and can be conveniently added to the production of boards such as wood-plastic flooring, effectively reducing the generation of dust, avoiding the occurrence of fire, and at the same time, it is well realized The reuse of waste resources reduces the production cost of panels.

Description

technical field [0001] The invention belongs to the technical field of polyurethane solid waste recycling and utilization, and in particular relates to a production method of polyurethane foam powder solid waste particles. Background technique [0002] With the rapid development of my country's refrigerator manufacturing industry and widespread use, it has led to a sharp increase in discarded refrigerators. According to incomplete statistics, about 20 million refrigerators are discarded in my country every year, and the polyurethane insulation material in each refrigerator is about 7 kg, so about 140,000 tons of polyurethane foam waste is generated annually. Polyurethane foam waste is the powdered polyurethane left after the recycling plant crushes the polyurethane insulation material and recycles the metal. This polyurethane foam powder is a thermosetting plastic with a density of about 40 kg / m3. Except for filling bricks, cement and other building materials, the others are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B9/00B29B9/16
CPCB29B9/00B29B9/16
Inventor 唐道远吴光荣李磊刘峰
Owner ANHUI SENTAI WPC GRP CO LTD
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