Wax and paper separation process for waste wax cartons and application of wax and paper separation process

A carton and craft technology, which is applied in the field of wax and paper separation technology, can solve the problems of complicated separation technology, achieve the effect of increasing shear force and facilitating disintegration

Inactive Publication Date: 2019-12-10
SHANYING INT HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a wax and paper separation process for waste wax cartons, the purpose of which is to solve the complicated separation process of existing waste wax cartons and provide an efficient wax and paper separation process

Method used

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  • Wax and paper separation process for waste wax cartons and application of wax and paper separation process
  • Wax and paper separation process for waste wax cartons and application of wax and paper separation process
  • Wax and paper separation process for waste wax cartons and application of wax and paper separation process

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A kind of wax and paper separation process of waste wax carton of the present embodiment, combine figure 1 As shown, the waxed paper is transported from the chain plate machine to the hydropulper, adding pulping white water (water temperature 50°C), controlling the concentration of the waxed paper to 10%, and adding caustic soda, wherein the absolute dry dosage of caustic soda is 7kg of caustic soda per ton of waxed paper , maintain the hydropulper level at 50%, start the hydropulper, and stir the wax paper. After stirring for 30 minutes, continue to add white water for pulping, control the wax paper concentration to 6%, stir the wax paper for 30 minutes, and repeat 3 to 5 times. Open the discharge valve of the hydraulic pulper and discharge the pulp.

[0044] The slurry obtained from the hydraulic pulper is sent to the hydraulic slag cleaner for further disintegration, and the good pulp is reused. The slurry is then passed through a cylindrical sieve to remove the pla...

Embodiment 2

[0057] A wax and paper separation process for waste wax cartons in this embodiment, the wax paper is transported from the chain conveyor to the hydropulper, water (water temperature 45°C) is added to control the wax paper concentration to 12%, and KOH is added, wherein KOH The absolute dry dosage is to add 5kg of caustic soda per ton of wax paper, keep the liquid level of the hydropulper at 40%, start the hydropulper, and stir the wax paper. After stirring for 20 minutes, continue to add water, control the wax paper concentration to 7%, stir the wax paper for 20 minutes, repeat 3-5 times. Open the discharge valve of the hydraulic pulper and discharge the pulp.

[0058] The slurry obtained from the hydraulic pulper is sent to the hydraulic slag cleaner for further disintegration, and the good pulp is reused. The slurry is then passed through a cylindrical sieve to remove the plastic skin, and the fibers mixed in the plastic skin are obtained, and then the pulp is processed and ...

Embodiment 3

[0071] A wax and paper separation process for waste wax cartons in this embodiment, the wax paper is transported from the chain conveyor to the hydraulic pulper, adding pulping white water (water temperature 55°C), controlling the wax paper concentration to 8%, and adding caustic soda, Wherein the dry consumption of caustic soda is to add 10kg of caustic soda per ton of wax paper, the liquid level of the hydropulper is kept at 60%, start the hydropulper, and stir the wax paper. After stirring for 40 minutes, continue to add white water for pulping, control the wax paper concentration to 5%, stir the wax paper for 40 minutes, and repeat 3 to 5 times. Open the discharge valve of the hydraulic pulper and discharge the pulp.

[0072] The slurry obtained from the hydraulic pulper is sent to the hydraulic slag cleaner for further disintegration, and the good pulp is reused. The slurry is then passed through a cylindrical sieve to remove the plastic skin, and the fibers mixed in the ...

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Abstract

The invention discloses a wax and paper separation process for waste wax cartons and application of the wax and paper separation process, and belongs to the technical field of paper making. The wax and paper separation process includes the following steps: (1) the waste wax cartons are collected into a pulper; (2) pulping is conducted, specifically, a solvent and lye are added, and meanwhile, an intermittent pulping mode is adopted; (3) heavy slag is removed; (4) coarse sieving is conducted; (5) grading sieving is conducted; (6) fine sieving is conducted; and (7) secondary treatment of good long fiber pulp is conducted. The pulper is a hydraulic pulper, and the rotating speed of the pulper is 300-500 r/min; the solvent is water or pulping white water or a mixture of the water and the pulping white water, the temperature of the solvent is 45-55 DEG C, and the additive amount of the solvent enables the concentration of wax paper to be 8-12%; and the lye includes but is not limited to a caustic soda or potassium hydroxide solution. According to the wax and paper separation process, wax and paper on the wax cartons can be effectively separated, paper fiber after separation of the wax can serve as a raw material for manufacturing the cartons, the obtained cartons have good compressive strength, and the industry use standard is met.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and more specifically relates to a process for separating wax and paper from waste wax cartons and an application thereof. Background technique [0002] Nowadays, with the popularization of the Internet and more and more industrial products, the market demand for cartons is increasing. In order to enhance the performance of the carton and make the carton waterproof, moisture-proof, mold-proof and environmentally friendly, the surface of high-quality cartons is generally waxed to form a waxed carton, which can ensure the service life of the carton and isolate harmful substances in the carton. Distributed to achieve the role of safety and environmental protection. However, once the cartons are waxed, the waxed paper cannot be effectively shredded in the pulping system, which makes it difficult to recycle waxed cartons as raw materials for papermaking. Therefore, the existing methods of dealin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/34D21B1/32D21D5/18D21D5/02D21D1/02D21D1/30
CPCD21B1/32D21B1/345D21D1/02D21D1/30D21D5/02D21D5/18Y02W30/64
Inventor 李聪定宋杰万涛汪锋鲁仕敏刘召强
Owner SHANYING INT HLDG CO LTD
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