Method for recycling waste paper-plastic or paper-aluminum package material

A packaging material and recycling method technology, which is applied in the field of recycling, processing and recycling of waste resources, can solve the problems of less than 10% recycling rate, low recycling rate, environmental pollution, etc., so as to achieve reuse, save resources, and reduce costs. effect of input

Active Publication Date: 2014-04-16
青岛福创环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The raw materials used in the production of composite packaging materials need to consume non-renewable petroleum resources or metal resources. In addition, with the change of people's living habits, the packaging that is disposable and disposable has increased, causing a large amount of composite packaging waste to scatter in

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Pretreatment of waste materials

[0056] Separating the waste paper-plastic composite packaging materials from the waste paper pulp, using a shredder to cut them into 4.0 cm 2The small pieces are washed with tap water with a solid-to-liquid ratio of 1:300 at room temperature to remove impurities such as sediment inside, dried, and set aside.

[0057] (2) Decomposition of waste materials

[0058] Prepare a NaOH solution with a concentration of 2%, adjust the temperature of the solution to 80°C with a water bath, take 1 kg of the composite material after the above treatment, put it into the NaOH solution at a solid-to-liquid ratio of 1:10, and stir at a constant temperature for 50 min;

[0059] After the pulp is fully dissolved, it is sent to a high-frequency deflaking machine for deflaking. After deflaking, the mass concentration is adjusted to 0.5% with water, and then sent to a slag remover for separation.

[0060] (3) Recycling of waste materials

[0061] The s...

Embodiment 2

[0063] (1) Pretreatment of waste materials

[0064] Separating the waste paper-plastic composite packaging materials from the waste paper pulp, using a shredder to cut them into 3.0 cm 2 The small pieces are washed at room temperature with tap water with a solid-to-liquid ratio of 1:200 to remove impurities such as sediment inside, dried, and set aside.

[0065] (2) Decomposition of waste materials

[0066] Prepare a KOH solution with a concentration of 1%, adjust the temperature of the solution to 75°C with a water bath, take 1.3 kg of the above-mentioned composite material, put it into the NaOH solution at a solid-to-liquid ratio of 1:8, and stir at a constant temperature for 35 minutes;

[0067] After the pulp is fully dissolved, it is sent to a high-frequency deflaking machine for deflaking. After deflaking, the mass concentration is adjusted to 0.5% with water, and then sent to a slag remover for separation.

[0068] (3) Recycling of waste materials

[0069] The separa...

Embodiment 3

[0071] (1) Treatment of waste materials

[0072] The waste paper-aluminum composite packaging material is separated from the waste paper pulp, and cut into 2.0 cm by a shredder 2 The small pieces are washed at room temperature with tap water with a solid-to-liquid ratio of 1:200 to remove impurities such as sediment inside, dried, and set aside.

[0073] (2) Separation of waste materials

[0074] Prepare a NaOH solution with a concentration of 0.5%, adjust the temperature of the solution to 100°C with a water bath, take 1.2 kg of the composite material after the above treatment, put it into the NaOH solution at a solid-to-liquid ratio of 1:10, and stir at a constant temperature for 50 min;

[0075] Then add 30% H 2 o 2 32 mL of the solution was stirred at 100°C for 20 min until the pulp was completely dissolved, and then it was sent to a high-frequency deflaking machine. After deflaking, the mass concentration was adjusted to 1% with water, and then sent to a deslagging dev...

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PUM

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Abstract

The invention discloses a method for recycling a waste paper-plastic or paper-aluminum package material. The method comprises the following steps: (1) cutting a waste package material into small pieces, washing to remove impurities, and drying; (2) putting the small material pieces into a water-soluble alkali solution, stirring under the constant temperature condition of 50-100 DEG C, so as to enable the alkali solution to dissolve the paper-plastic or paper-aluminum package material of the waste package material into paper pulp fiber and plastic or aluminum foil, thereby obtaining a separation mixture; (3) feeding the separation mixture into a high-frequency defibering machine so as to disperse and defiber the paper pulp fiber, thereby obtaining a defibering mixture; putting the defibering mixture into a slag cleaner, treating to respectively obtain paper pulp fiber and a plastic or aluminum foil material, subsequently drying the paper pulp fiber and the plastic or aluminum foil material so as to obtain a recycled paper pulp, plastic or aluminum foil material. The method has the excellent effects that paper pulp, plastic and aluminum foil are separated and recycled from the waste paper composite package material, and the method is simple in process, controllable in cost, resource-saving and beneficial for ecologic environment.

Description

technical field [0001] The invention belongs to the technical field of recycling processing and recycling of waste resources, and in particular relates to a method for recycling waste paper plastic or paper aluminum packaging materials. Background technique [0002] With the continuous improvement of people's living standards, there are higher requirements for the packaging of goods, such as food, medicine and other packaging, which require that the packaging should also have functions such as shading, heat sealing, and airtight. Therefore, the rapid development of the packaging industry has emerged Composite packaging materials that meet the above requirements. For example, paper-plastic (polyethylene PP, polypropylene PE as a composite of plastic layer and kraft paper) and paper-aluminum composite packaging materials (composite of kraft paper, PP layer, and aluminum film) are common composite packaging paper materials. Because of its safety and sanitation, convenient use ...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00
Inventor 任宪君张淑娟张秋艳
Owner 青岛福创环境科技有限公司
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