Method of manufacturing formed body using paper sluge

Abstract

The present invention provides a manufacturing method of a paper sludge formed body, comprising; a step of mixing polyethylene (PE) powder or polypropylene (PP) powder and a foaming agent with paper sludge having moisture contents less than three percent with a weight ratio of 10:3-4:0.5-1 in a stirrer; a step of extruding the mixture with a thickness of 3-7 mm in an extruder; and s step of cutting the extruded mixture in a length of 3-10 mm after the pressing step. The present invention recycles the paper sludge which is discarded, prevents marine and soil pollution, and solves an economic burden due to incineration and landfill. The present invention has outstanding appearance, high strength, and light weight, thereby being used in various industry fields as building interior and exterior materials, an insulator, a heat insulating material etc. A plurality of air holes is formed on the formed body by a foaming agent. Therefore, the present invention has sound-absorbing power and soundproof property which prevents noise. Also, the present invention has excellent insulation property.

Description

technical field [0001] The present invention relates to a method for producing a papermaking sludge molded body, and more specifically to a method for manufacturing the papermaking sludge molded body as follows: preventing ocean and soil pollution by recycling waste treated papermaking sludge, and eliminating incineration and landfilling Due to its excellent appearance, high strength, and low weight, the molded body can be used in various industrial fields such as building interior and exterior materials, heat insulation materials, and thermal insulation materials. Background technique [0002] Usually, papermaking sludge is mainly composed of inorganic substances such as fine short fibers, kaolin, and talc that are not recovered by papermaking screens during the papermaking process, and it inevitably occurs in the papermaking industry. [0003] Especially in the Korean paper industry, the per capita paper consumption is greater than 200kg per year, and continues to grow at ...

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Problems solved by technology

[0006] Several methods have been disclosed for manufacturing such lightweight panels, but they cannot satisfy the required physical properties of lightweight panels such as weight reduction, economy, and strength at the same time, so they are rarely used in industry. kind of problem

[0007] In the past, in order to solve the above problems, the method of using papermaking sludge to manufacture lightweight boards has been disclosed in Korean Patent No. 10-1996-37962 and No. 10-1996-29539. The suitability of other materials is low, and there are disadvantages such as low water resistance or strength, low heat resistance and flame resistance, so other solutions are still being explored