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Production method for recycled bottle sheet

A technology for regenerating bottle flakes and production methods, applied in recycling technology, plastic recycling, etc., can solve the problems of high impurity content and high textile line speed, and achieve the effect of improving recycling quality and efficiency and reducing impurities

Inactive Publication Date: 2012-02-22
何国强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The recycled bottle flakes produced in the prior art cannot be used in the production process of polyester FDY, which has a high textile line speed and high requirements on raw materials, due to its high impurity content and other reasons.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The recovered PET bottles are cleaned by high-speed beating to maximize the removal of impurities, and during the cleaning process, the bottles rub against each other to remove impurities such as pulp on the surface of the bottles. The temperature of the cleaning water is 80 °C, and the cleaning water is Weakly alkaline, PH value is 8, and the cleaning time is 15 minutes; then, the cleaned PET bottle is crushed into PET particles with a particle size of 16mm by a pulverizer, and the obtained PET particles are transported to a separation device equipped with a liner for further processing. Separation of impurities and PET particles, and the temperature of the separation equipment is set at room temperature, and the line speed is set at 2500m / min; the separated PET particles are transported to a high-temperature furnace for secondary cleaning, specifically high-temperature rotary cleaning, The rotating line speed is 2500m / min, the temperature in the furnace is set at 90°C,...

Embodiment 2

[0020] The recovered PET bottles are cleaned by high-speed beating to maximize the removal of impurities, and during the cleaning process, the bottles rub against each other to remove impurities such as pulp on the surface of the bottles. The temperature of the cleaning water is 70°C, and the cleaning water is Weakly alkaline, PH value is 8.5, and the cleaning time is 15 minutes; then, the cleaned PET bottle is crushed into PET particles with a particle size of 16mm by a pulverizer, and the obtained PET particles are transported to a separation device equipped with a liner for further processing. Separation of impurities and PET particles, and the temperature of the separation equipment is set at room temperature, and the line speed is set at 2500m / min; the separated PET particles are transported to a high-temperature furnace for secondary cleaning, specifically high-temperature rotary cleaning, The rotating line speed is 2500m / min, the temperature in the furnace is set at 90°C...

Embodiment 3

[0022] The recovered PET bottles are cleaned by high-speed beating to maximize the removal of impurities, and during the cleaning process, the bottles rub against each other to remove impurities such as paper pulp on the surface of the bottles. The temperature of the cleaning water is 75°C, and the cleaning water is Weakly alkaline, PH value is 9, and the cleaning time is 15 minutes; then, the cleaned PET bottle is crushed into PET particles with a particle size of 16mm by a pulverizer, and the obtained PET particles are transported to a separation device equipped with a liner for further processing. Separation of impurities and PET particles, and the temperature of the separation equipment is set at room temperature, and the line speed is set at 2500m / min; the separated PET particles are transported to a high-temperature furnace for secondary cleaning, specifically high-temperature rotary cleaning, The rotating line speed is 2500m / min, the temperature in the furnace is set at ...

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Abstract

The present invention relates to a production method for a recycled bottle sheet. According to the method, recovered PET bottles are pre-washed to maximally remove impurities; the PET bottles are crushed into PET particles with a particles size of 16 mm, and the impurities in the PET particles are separated; then the PET particles are subjected to treatments of secondary washing, separation rinsing, dehydration and separation, and drying in one time to obtain the required recycled bottle sheet. The method provided by the present invention has the following advantages that: the PET bottles are recovered and utilized; the recycling quality and the recycling efficiency of the PET bottles are improved; a new raw material source is provided for the production of terylene FDY.

Description

【Technical field】 [0001] The invention relates to a production method, in particular to a production method of recycled bottle flakes which can be used as raw materials for polyester FDY production. 【Background technique】 [0002] Polyester (PET) bottles (such as mineral water bottles, beverage bottles, edible oil bottles, etc.) are almost non-biodegradable. With the improvement of people's environmental protection requirements, it has become a sustainable trend for the polyester industry to process and recycle waste polyester bottles. key issues of development. In recent years, people have continuously developed some recycling methods: for example, using recycled PET bottle flakes (that is, recycled waste polyester bottles are crushed into flakes) to make short fibers, which are used in the laboratory for small screw production Filament experiment; Chinese Patent Publication No. CN1683612 discloses a "production method for directly manufacturing fibers from reclaimed polye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/00
CPCY02W30/62
Inventor 何国强
Owner 何国强
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