Fruit fresh-keeping paperboard and preparation method thereof

A cardboard and fruit technology, applied in papermaking, paper coating, waste paper processing, etc., can solve the problems of inconvenient operation, time-consuming, high cost, etc., and achieve the effect of improving safety

Inactive Publication Date: 2010-08-18
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of fresh-keeping paper and paper bags, it is difficult to control the release rate of fresh-keeping components such as sulfur dioxide gas, and because of the complicated production process of fresh-keeping paper, it needs to be bagged and packaged one by one when used, which is inconvenient to operate, time-consuming, and high in cost. Disadvantages, so it is not suitable for large-scale use
In addition, the fresh-keeping paper or paper bag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A fruit fresh-keeping cardboard. The fruit fresh-keeping cardboard is composed of cardboard base paper and a fresh-keeping coating coated on its surface. The cardboard base paper is mainly made of waste paper, and the basis weight is 90-100g / m 2 , mainly fresh-keeping coating for playing fresh-keeping effect, it is characterized in that, the main component of fresh-keeping coating is white silica ethylene absorbent and nisin, natamycin biological antibacterial preservative, the quantitative of fresh-keeping coating is 5 ~30g / m 2 .

[0019] Preparation of fruit preservation cardboard

[0020] ① Use waste paper as the main raw material to make pulp through crushing, high-concentration deslagging, flaking, low-concentration deslagging and screening, and use a rotary screen paper machine or a stacked screen paper machine to copy and shape it, and mechanically press and dry it into quantitative pulp. 90g / m 2 cardboard base paper.

[0021] ②Put 100 kg of white silica, 50 ...

Embodiment 2

[0023] Embodiment 2: the preparation of fruit fresh-keeping cardboard

[0024] ① Use waste paper as the main raw material to make pulp through crushing, high-concentration deslagging, flaking, low-concentration deslagging and screening, and use a rotary screen paper machine or a stacked screen paper machine to copy and shape it, and mechanically press and dry it into quantitative pulp. 90g / m 2 cardboard base paper.

[0025] ②Put 100 kg of white silica, 150 kg of kaolin, 1 kg of sodium polyacrylate, 0.05 kg of nisin and 0.03 kg of natamycin into the high-speed disperser, then add 80 kg of water, start the high-speed dispersion for 0.5 hours, until the After complete dispersion, filter to make a pigment dispersion. Add 50 kg of oxidized starch and 80 kg of water into the dissolving tank, start the agitator to stir evenly, heat to 90-95°C, and continue to stir for 0.5 hours until it dissolves to form oxidized starch liquid. Pump the pigment dispersion liquid into the paint mix...

Embodiment 3

[0027] Embodiment 3: the preparation of fruit fresh-keeping cardboard

[0028] ① Use waste paper as the main raw material to make pulp through crushing, high-concentration deslagging, flaking, low-concentration deslagging and screening, and use a rotary screen paper machine or a stacked screen paper machine to copy and shape it, and mechanically press and dry it into quantitative pulp. 90g / m 2 cardboard base paper.

[0029] ② Add 100 kg of white silica, 100 kg of kaolin, 0.5 kg of sodium polyacrylate, 0.03 kg of nisin and 0.01 kg of natamycin into the high-speed disperser, then add 80 kg of water, and start the machine for 0.5 hours of high-speed dispersion until the After complete dispersion, filter to make a pigment dispersion. Add 20 kg of oxidized starch and 80 kg of water into the dissolving tank, start the agitator to stir evenly, heat to 90-95°C, and continue to stir for 0.5 hours until it dissolves to form oxidized starch liquid. Pump the pigment dispersion liquid i...

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PUM

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Abstract

The invention provides a fruit fresh-keeping paperboard and a preparation method thereof. The fruit fresh-keeping paperboard consists of paperboard base paper and fresh-keeping coat which is spread on the surface of the paperboard base paper. The paperboard base paper is mainly made from the waste paper, and the base weight is 90 to 100 g/m2. The fresh-keeping coat mainly comprises the following components in part by weight: 1 part of cristobalite, 0.25 to 1.5 parts of kaolin, 0.005 to 0.01 part of sodium polyacrylate, 0.0003 to 0.0005 part of nisin, 0.0001 to 0.0003 part of natamycin, 0.2 to 0.5 part of oxidized starch and 1.0 to 2.0 parts of water, and the base weight is 5 to 30 g/m2. The waste paper is made into the paperboard base paper through, disintegration, high-consistency slag removal, defibering, low-consistency slag emoval and screening, the cristobalite, kaolin, the sodium polyacrylate, the nisin, the natamycin and water are added into a high-speed dispersion machine to be made into pigment dispersion liquid after being adequately dispersed and filtered, and the oxidized starch and the water are heated to be dissolved to obtain the oxidized starch liquid. The pigment dispersion liquid is mixed with the oxidized starch liquid to obtain the fresh-keeping paint liquid, after being filtered by 180 to 200-mesh sieve, the fresh-keeping paint liquid is spread onto the surface of the paperboard base paper through a spreading machine, and the paperboard base paper with the surface being coated with the fresh-keeping paint is secondarily dried, press finished and decorated to obtain the finished product. The fruit fresh-keeping paperboard has the advantages that the fresh-keeping effect is good, the environment compatibility is good, the fresh-keeping package and the storage and transportation package are integrated, and the continuous mass production can be realized on the papermaking machine.

Description

technical field [0001] The invention relates to a cardboard, in particular to a fruit fresh-keeping cardboard and a preparation method thereof. Background technique [0002] At present, there are mainly two types of fresh-keeping methods: physical method and chemical method. [0003] ①Physical preservation [0004] Physical fresh-keeping methods mainly include: low-temperature storage, controlled atmosphere storage, decompression storage, and electromagnetic radiation storage. Although these physical fresh-keeping methods have better fresh-keeping effects, they generally require special equipment, large investment, complicated operation, high operating costs, and it is very difficult to use them in a large area within the first time. In particular, China has vast rural areas, and the area of ​​orchards is relatively small and scattered. Physical fresh-keeping methods are not suitable for the first-time fresh-keeping of fruits after harvesting. [0005] ②Chemical preservat...

Claims

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Application Information

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IPC IPC(8): D21H19/72D21H21/14D21H19/44D21C5/02
CPCY02W30/64
Inventor 沙力争肖功年赵会芳王建华
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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