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Oil-proof wrapping paper and preparation method thereof

A technology of wrapping paper and oil-proof paper, which is applied in the direction of wrapping paper, wrapping paper, packaging, etc., can solve the problems of oil-proof food wrapping paper not being environmentally friendly, high amount of oil-proof agent used, and low product strength, so as to improve product grade and Effect of adding value, improving surface oil repellency, and improving internal oil repellency

Active Publication Date: 2019-04-26
ZHEJIANG HENGDA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems in the prior art that oil-proof food wrapping paper is not environmentally friendly, low in safety, high in oil-proofing agent usage, low in oil-proof efficiency, and low in product strength, the object of the present invention is to provide an oil-proof wrapping paper and its preparation method

Method used

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  • Oil-proof wrapping paper and preparation method thereof

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Effect test

Embodiment 1

[0044] A kind of preparation method of oil-proof wrapping paper of the present embodiment, described method comprises the steps:

[0045] (1) Preparation of oil-resistant plant microfibrils

[0046] At room temperature, sequentially add 50kg of fluorobenzoyl chloride, 50kg of dimethylformamide, and 50kg of plant fiber microfibrils into the reactor, stir and mix evenly, heat to 70°C, and stir and react at 70°C for 2 hours; After the end, cool to room temperature, filter the product, remove excess solvent, then wash twice with dichloromethane, then wash twice with ethanol, take it out after washing, and dry at 60°C for 24 hours to obtain oil-resistant plant microfibers silk; wherein: the diameter of the plant fiber microfibril is 5-10um, and the length is 200-400um.

[0047] (2) the preparation method of oil-proof (modified) nano-cellulose, described method comprises the steps:

[0048] At room temperature, sequentially add 1000g of fluorobenzoyl chloride, 750g of dimethylform...

Embodiment 2

[0057] A kind of preparation method of oil-proof wrapping paper of the present embodiment, described method comprises the steps:

[0058] (1) Preparation of oil-resistant plant microfibrils

[0059] At room temperature, sequentially add 25kg of fluorobenzoyl chloride, 50kg of dimethylformamide, and 50kg of plant fiber microfibrils into the reactor, stir and mix evenly, heat to 80°C, and stir and react at 80°C for 1 hour; After the end, cool to room temperature, filter the product, remove excess solvent, then wash 4 times with dichloromethane, then wash 4 times with ethanol, take it out after washing, and dry at 60°C for 24 hours to obtain oil-resistant plant microfibers silk; wherein: the diameter of the plant fiber microfibril is 5-10um, and the length is 200-400um.

[0060] (2) Preparation of oil-resistant nanocellulose

[0061] At room temperature, sequentially add 500g of fluorobenzoyl chloride, 500g of dimethylformamide, and 250g of nanocellulose crystals into the react...

Embodiment 3

[0070] A kind of preparation method of oil-proof wrapping paper of the present embodiment, described method comprises the steps:

[0071] (1) Preparation of oil-resistant plant microfibrils

[0072] At room temperature, sequentially add 50kg of fluorobenzoyl chloride, 100kg of dimethylformamide, and 50kg of plant fiber microfibrils into the reactor, stir and mix evenly, heat to 75°C, and stir and react at 75°C for 1.5h; After the reaction, cool to room temperature, filter the product, remove excess solvent, then wash 5 times with dichloromethane, then wash 5 times with ethanol, take out and dry at 60°C for 24 hours to obtain oil-resistant plant microfibrils; : the diameter of the plant fiber microfibril is 5-10um, and the length is 200-400um.

[0073] (2) Preparation of oil-resistant nanocellulose

[0074] At room temperature, sequentially add 750g of fluorobenzoyl chloride, 500g of dimethylformamide, and 250g of nanocellulose crystals into the reactor, stir and mix evenly, ...

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Abstract

The invention relates to oil-proof wrapping paper and a preparation method thereof and belongs to the technical field of food wrapping paper. According to the invention, a double oil-proof technologyis adopted, fluorobenzoyl chloride, dimethyl formamide and plant fiber microfilaments are mixed according to a certain proportion, oil-proof plant fiber microfilaments are prepared under certain reaction conditions, nanometer celluloses are subjected to fluorine-containing modification preparation by using the same method, and the double oil-proof wrapping paper is prepared by paper-making and surface application. The oil-proof wrapping paper and the preparation method thereof provided by the invention have the beneficial effects that the interior oil-proof performance and the surface oil-proof performance of the oil-proof wrapping paper are improved, and through double oil-proof treatment on the interior and the surface of pulp, the product achieves high oil-proof performance; in addition, the oil-proof wrapping paper is good in oil-proof performance, enhancement performance and barrier performance, so that the product grade and the value added are improved; moreover, the oil-proof wrapping paper prepared by the preparation method provided by the invention needs not be coated or waxed, so that the environmental protection performance, the safety, the oil-proof efficiency and the strength of the oil-proof wrapping paper are improved, and the application range is expanded.

Description

technical field [0001] The invention belongs to the technical field of food wrapping paper, and in particular relates to an oil-proof wrapping paper and a preparation method thereof. Background technique [0002] The environmental protection and safety of oil-containing food packaging materials have always been a concern of the government, the public and technical personnel in related fields. In recent years, the rapid development of the fast-moving food market has driven the development of oil-containing food packaging materials. Oil-proof wrapping paper is one of the most commonly used oil-containing food packaging materials. Ordinary oil-proof wrapping paper is usually coated with wax or coated on the surface of the paper to improve the oil-resistant performance of the paper. However, whether it is safe to apply wax or film on the surface of fast-moving food oil-proof packaging paper is also a concern of the government, the public and technical personnel in related fields...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21H15/10D21H11/00D21H13/00D21H21/14D21H19/34D21H19/14D21H21/16
CPCD21H11/00D21H13/00D21H15/10D21H19/14D21H19/34D21H21/14D21H21/16D21H27/10
Inventor 伊财富赵新民杨菊红江利王启华程亚洲丁济正吕江华廖寿华
Owner ZHEJIANG HENGDA NEW MATERIAL CO LTD
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