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Selecting process of regenerated polyester bottles

A recycled polyester and process technology, applied in the field of waste polyester bottle recycling, can solve the problems of low impurity removal rate of non-polyester materials, high labor efficiency, affecting the quality of recycled polyester bottle flakes, etc.

Inactive Publication Date: 2020-02-28
ZHEJIANG HAILI ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the unnecessary non-polyester bottles and impurities in polyester recycling bottles are relatively low (<50%), in order to obtain qualified polyester recycling bottles, the reverse selection process is generally adopted, that is, through mechanical and manual selection. , pick out non-polyester bottle materials and other impurities on the bottle material belt. The above method of reverse selection has the advantage of high labor efficiency, but the disadvantage is that the removal rate of non-polyester materials including impurities is not high, which seriously affects the production of recycled polyester bottle flakes. quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 whitening tablet

[0031] 1) Unpack the purchased bottle bricks, sort materials to select polyester bottles, non-polyester bottles and impurities are as follows, and the non-polyester bottles and impurities selected above will automatically flow into the next process; ① Non-PET (including pvc, PE, pp, pc, low melting, flake, etc.); ② pvc label paper bottle, pvc label paper, bottle mouth pvc label paper; ③ blue bottle, variegated bottle, green bottle, milky white bottle, oil Bottles; ④ Glue bottles, self-adhesive bottles, special-shaped bottles, soy sauce bottles, recycled bottles (that is, extremely thin bottles); ⑤ Yellowish and dyed bottles; ; ⑦ metal, (aluminum bottle, iron, cans, etc.); ⑧ cable ties, cloth strips, ropes;

[0032] 2) Wash the pre-selected polyester bottle at 1 / 6 of the cleaning liquid level of the washing machine at 90°C±2°C for 8-10 minutes to remove the label paper of the polyester bottle and impurities, oil stains, etc. on the surfac...

Embodiment 2

[0040] Example 2 blue and white tablets

[0041]1) Unpack the purchased bottle bricks, sort materials to select polyester bottles, non-polyester bottles and impurities are as follows, and the non-polyester bottles and impurities selected above will automatically flow into the next process; ① Non-PET (including pvc, PE, pp, pc, low melting, flake, etc.); ② pvc label paper bottle, pvc label paper, bottle mouth pvc label paper; ③ variegated color bottle, green bottle, milky white bottle, dirty oil bottle; ④Seriously glue bottles, severely self-adhesive bottles, special-shaped bottles, dirty soy sauce bottles, recycled bottles (thin bottles; , etc.); ⑦ cable ties, cloth strips, ropes;

[0042] 2) Wash the pre-selected polyester bottle at 1 / 6 of the cleaning liquid level of the washing machine at 90°C±2°C for 8-10 minutes to remove the label paper of the polyester bottle and impurities, oil stains, etc. on the surface;

[0043] 3) Manually select the polyester bottles obtained in...

Embodiment 3

[0049] Embodiment 3 green sheet

[0050] 1) Unpack the purchased bottle bricks, sort materials to select polyester bottles, non-polyester bottles and impurities are as follows, and the non-polyester bottles and impurities selected above will automatically flow into the next process; ① Non-PET (including pvc, PE, pp, pc, low melting, flake, etc.); ② pvc label paper bottle, pvc label paper, bottle neck pvc label paper; ③ blue bottle, variegated bottle, milky white bottle, oil bottle, white bottle; pearl bottle (soaked and aged in water); ④ glue bottle, self-adhesive bottle, special-shaped bottle, soy sauce bottle, recycled bottle (that is, a particularly thin bottle); ⑤ metal, (aluminum bottle, iron, can , etc.) Dirty bottles with sundries in them; ⑥ cable ties, cloth strips, ropes;

[0051] 2) Wash the pre-selected polyester bottle at 1 / 6 of the cleaning liquid level of the washing machine at 90°C±2°C for 8-10 minutes to remove the label paper of the polyester bottle and impur...

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PUM

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Abstract

The invention provides a selecting process of regenerated polyester bottles. The selecting process comprises the following steps: A) disassembling polyester waste, selecting polyester bottles, and carrying out post-treatment on non-polyester bottles and impurities; B) cleaning the polyester bottles to remove label paper, bottle caps and impurities of the polyester bottles; C) manually selecting the cleaned polyester bottles to select qualified polyester bottles; and D) crushing and cleaning the polyester bottles obtained in the step C) to obtain regenerated polyester bottle sheets. According to the selecting process, impurities in the polyester waste are completely removed finally in a mode of preliminary selection, secondary selection and selection of selecting the polyester bottles first, and the selected polyester bottles are actually required polyester bottles, so that the quality of the regenerated polyester bottles is guaranteed.

Description

technical field [0001] The invention relates to the technical field of recycling waste polyester bottles, in particular to a selection process for recycled polyester bottles. Background technique [0002] Polyester (PET) bottles are the main force in food and beverage packaging. The world's annual production of PET bottles is about 30 million tons, of which China is about 6 million tons. Post-consumer old polyester bottles (polyester waste) are extremely chemically inert and difficult to degrade under natural conditions, which not only imposes a great burden on the earth's environment, but also causes a great waste of resources. The recycling of polyester waste can effectively solve the problems of resource shortage, original resource development and waste discharge, and is of great significance to the realization of sustainable development. [0003] The first step in the recycling of polyester waste is to clean and process it, process it into recycled polyester bottle flak...

Claims

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Application Information

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IPC IPC(8): B29B17/02B29B17/04B29B17/00
CPCB29B17/00B29B17/02B29B17/04B29B2017/0015Y02W30/52Y02W30/62
Inventor 方叶青冯建明董凤敏陆勤燕黄爱群黄家芬吴利华
Owner ZHEJIANG HAILI ENVIRONMENTAL TECH CO LTD
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