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A method for producing high-strength corrugated medium paper by mixing leather waste with OCC waste paper

A technology of leather waste and corrugated medium paper, applied in pulp beating/refining method, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., which can solve the waste of resources , environmental pollution and other issues, to achieve the effect of high production efficiency, low production cost and easy implementation

Active Publication Date: 2017-09-29
东莞顺裕纸业有限公司
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Problems solved by technology

Leather waste is useless as the waste of shoe-making enterprises. At present, shoe-making enterprises generally treat it as garbage incineration. Incineration of leather waste not only pollutes the environment, but also wastes resources. There is a need for improvement.

Method used

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  • A method for producing high-strength corrugated medium paper by mixing leather waste with OCC waste paper

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Embodiment

[0036] Embodiment, a method for producing high-strength corrugated medium paper by mixing leather waste with OCC waste paper, figure 1 shown, including the following processing steps,

[0037] Acidification treatment steps of leather waste, use acid hydrolysis method to acidify leather waste, choose concentrated acid in the acid hydrolysis method, concentrated acid chooses concentrated sulfuric acid, concentrated nitric acid or concentrated hydrochloric acid, the treatment concentration of the acid hydrolysis method is 10%, and the pH value is 1 ~2. Collagen fibers are separated from leather waste, and most of the separated collagen fibers exist in the form of fiber bundles. The high-concentration hydrogen ions in concentrated acid are combined with the carboxyl groups of collagen fibers to obtain a first-grade material.

[0038] Mechanical treatment steps of leather waste: use double disc mill to mechanically refine the primary material. During the refining process, all the ...

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Abstract

The invention discloses a method for producing high-strength corrugating medium paper through blending of leather waste and OCC waste paper. The leather waste is treated to obtain clean collagen fibers existing in a single fiber form, the OCC waste paper is pulped to be prepared into OCC pulp suitable for papermaking, 15-20% by weight of collagen fibers and 80-85% by weight of OCC pulp are matched into mixed pulp, the mixed pulp is used for papermaking, and the finished high-strength corrugating medium paper is obtained. Comprehensive utilization of resources is achieved, leather waste of shoe factories and leather factories is recycled to serve as production raw materials of the high-strength corrugating medium paper, a brand-new treating method is provided for the leather waste, and waste is turned into wealth; the production process is environmentally friendly, clean and free of pollution, environmental pollution is avoided, and the papermaking cost of the high-strength corrugating medium paper is reduced. According to the high-strength corrugating medium paper produced through the process, the collagen fibers from the leather waste and plant fibers from the OCC waste paper are interwoven and combined, and the higher-quality high-strength corrugating medium paper is obtained.

Description

technical field [0001] The invention relates to the technical field of production technology of corrugated medium paper, in particular to a method for producing high-strength corrugated medium paper by mixing leather waste with OCC waste paper. Background technique [0002] Leather waste contains a large number of collagen fibers, and collagen fibers contain many active groups. The collagen fibers separated by chemical treatment and mechanical treatment are more exposed and more reactive than the active groups in pulp fibers. They are two kinds of fibers The combination provides good conditions. Leather waste is useless as the waste of shoe-making enterprises. At present, shoe-making enterprises generally treat it as garbage incineration. Incineration of leather waste not only pollutes the environment, but also wastes resources. There is a need for improvement. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F11/12D21H17/21D21C1/04D21D1/30
CPCB31F1/20C14C1/08D21B1/32D21B1/345D21D1/303D21D5/02D21F1/00D21F3/00D21F3/08D21F5/00D21F5/02Y02W30/64
Inventor 赖耀康温永义刘伟锋刘志锋
Owner 东莞顺裕纸业有限公司
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