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Production method of nanometer titanium dioxide-based superhydrophobic composite corrugated carton

A technology of nano-titanium dioxide and corrugated boxes, which is applied in the field of corrugated boxes, can solve the problems of insufficient environmental protection and achieve the effects of improved waterproofing, reasonable process design, and long service life

Inactive Publication Date: 2019-01-08
六安市星星包装股份有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Although it can solve the problem of waterproofing, the problem of coating is not environmentally friendly, and it is not suitable for direct contact with food. This requires some technical innovations in corrugated boxes for food consumption.

Method used

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Embodiment Construction

[0020] A method for producing a superhydrophobic composite corrugated box based on nano-titanium dioxide, comprising the following specific steps:

[0021] (1) Disperse an appropriate amount of dry kraft pulp in a chitosan solution with a concentration of 1g / L according to the ratio of 5 grams of dry kraft pulp in 1 liter of chitosan solution, and stir magnetically at a low speed to form a fiber suspension , after stirring for 20 minutes, suction filtration was carried out with a Buchner funnel, and the obtained fiber was rinsed twice with ultrapure water;

[0022] (2) Disperse the treated fibers obtained in step (1) into the modified nano-titanium dioxide solution with a concentration of 2g / L in the same ratio as in step (1), stir magnetically at a low speed to form a fiber suspension, and continue stirring for 20 minutes Finally, the above-mentioned fiber suspension was separated with a Buchner funnel, and the separated fibers were rinsed twice with ultrapure water to obtain...

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Abstract

The invention discloses a production method of a nanometer titanium dioxide-based superhydrophobic composite corrugated carton. According to the production method, firstly, a multi-layer film is constructed on the surface of kraft pulp fiber with a layer-by-layer self-assembly method by using chitosan and modified nanometer titanium dioxide respectively; as the number of layers increases, chitosan / nanometer titanium dioxide powder is also increased on the surface of the kraft fiber, and paper fiber is gradually covered by the modified titanium dioxide; due to the modification, the paper fiberis endowed with good hydrophobicity, and an contact angle with water is gradually increased; kraft paper with a superhydrophobic surface can be obtained by a conventional papermaking technology and high-temperature heat treatment; the kraft paper and ultrathin calendered kraft paper are bonded by using molten polyethylene, not only is a bonding effect achieved, two layers of the kraft paper are combined, and more importantly, a bonding agent forms a film, so that the waterproof, moisture-proof and barrier properties, the puncture strength, the burst strength and the like of composite surface paper are further improved.

Description

technical field [0001] The invention relates to the technical field of corrugated cartons, in particular to a method for producing a superhydrophobic composite corrugated carton based on nano-titanium dioxide. Background technique [0002] Corrugated boxes are made of corrugated cardboard, waxed corrugated cardboard and other materials, and are packaging containers with certain rigidity and strength. Corrugated boxes have the advantages of light weight, high cost performance, good structural performance, foldable, strong printing adaptability, environmental protection, recyclability and suitable for automatic packaging operations, etc. [0003] The everlasting and rapidly developing paper packaging container is one of the most important forms of packaging in modern packaging, and it is in line with the concept of green development in my country today. [0004] Due to the development of the logistics industry, the circulation of various products has been accelerated. Waterpr...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21H27/38B31F1/00D21H11/04D21H17/24D21H17/67D21H17/69D21H17/06D21H17/13D21H21/16
CPCB31F1/00D21H11/04D21H17/06D21H17/13D21H17/24D21H17/675D21H17/69D21H21/16D21H27/10D21H27/38
Inventor 王亚宁
Owner 六安市星星包装股份有限公司
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