Reusing treatment immersion cleaning agent for PET bottle flake

Abstract

The invention relates to a reusing treatment immersion cleaning agent for a PET bottle flake. The reusing treatment immersion cleaning agent is prepared from the following raw materials in parts by weight: 10-25 parts of a compound surfactant, 1-5 parts of a chelating agent, 5-15 parts of a buffering agent, 1-5 parts of an expanding agent, 10-25 parts of a saponifier and 40-80 parts of a filler. Compared with the prior art, by adopting the surfactant compounded by surfactants with the emulsion dispersion property and the seepage property, the reusing treatment immersion cleaning agent has the strengthened seepage property and is capable of easily seeping into capillary pores of the bottle flake to remove pollutants. As for removing pollutants in the capillary pores with hard surfaces, the mechanical force is useless, and sufficient seepage time is needed, so that the formula needs to be operated in a static impregnation mode. When being used, the impregnation time of the PET bottle flake is generally 8-15 minutes, and the impregnation time of an oil bottle flake which is severely polluted is 20-35 minutes.

Description

technical field [0001] The invention relates to a leaching agent, in particular to a leaching agent for recycling PET bottle flakes. Background technique [0002] The cleaning of recycled PET bottles or other plastics belongs to the washing characteristics of "hard surfaces". The combination of pollutants and hard surfaces has several types such as polar adhesion, adhesive adhesion, capillary penetration and coating adhesion. Due to the characteristics of the product and material, the pollutants that are difficult to deal with in recycled PET bottles mostly occur in two types: adhesion and capillary penetration. [0003] Adhesion Adhesion is mostly manifested in the residue of the glue used for sticky labels on the surface of the PET material. In practical applications, there are more than a dozen types of glue used for labels, so the removal efficiency of various glue types varies greatly. Residual glue remains in the processing of PET recycled raw materials and subsequent...

AI Technical Summary

Problems solved by technology

[0006] 1. Washing with a single high-concentration lye, the PET material will be cracked under the action of strong alkali for a long time, so that the characteristics will be reduced. Because the types of residual glue are complex, heavy alkali cannot effectively remove all glue , does not have any cleaning effect on the pollutants in the capillary pores

[0007] 2. Washing with commercially available industrial cleaners may have a better effect than the above item, but the general commercially available ingredients do not have targeted formulas, and the washing effect cannot achieve the target, and they often contain nonylphenol and sodium tripolyphosphate. Environmentally Sensitive or Unfriendly Ingredients

[0008] 3. Use high-intensity mechanical force to rub the surface of PET, and use the method of grinding away the surface of the material to achieve the purpose of removing pollutants. The removal of residual glue can achieve a certain degree of effect, but PET bottle flakes are not regular flat surfaces. Therefore, there are still dead corners that cannot be removed, and it has no effect on cleaning pores

Moreover, this method consumes a lot of power, processing materials and mechanical structures.

[0009] 4. Wash by boiling at high temperature. Under high temperature conditions (100°C lower than the boiling point of water), some residual glue (hot-melt glue) will soften and be easy to detach, but not all residual glue is applicable to this principle. , this method is not helpful for pores cleaning

The method of high-temperature boiling requires a lot of heat energy. Due to the characteristics of the process, the heat energy is not easy to recycle, resulting in a lot of waste

[0010] 5. Washing with organic chemical solvents is the method most likely to cause industrial safety accidents and environmental pollution, and it may be necessary to prepare 2 to 3 different solvents for different residual glue, and the process conditions are relatively complicated

It is possible to remove the existing capillary pollution, but the solvent itself causes secondary pollution and is not easy to remove

[0011] Combined use of the above methods, only factors that magnify the shortcomings, still can not achieve the desired effect

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