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High barrier coating white cardboard and preparation method thereof

A technology of white cloth cardboard and high barrier, which is applied in the field of high barrier coated white cardboard and its preparation, can solve the problems of difficult degradation of PE coated paper, low production efficiency and high manufacturing cost, and achieve saving of transportation costs and recycling Effect of cost reduction and production cost reduction

Active Publication Date: 2019-01-11
ZHUHAI S E Z HONGTA RENHENG PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PE coating is carried out by using the method of coating outside the machine. The production process is relatively complicated, the production efficiency is low, and the manufacturing cost is high. Moreover, PE coated paper is difficult to degrade in nature, and the cost of factory recycling is high.

Method used

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  • High barrier coating white cardboard and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The high barrier agent is composed of the following components by mass: 8 parts of styrene, 1 part of butadiene, 8 parts of polybutyl acrylate, 7 parts of polyolefin, 1 part of isooctyl acrylate and 5 parts of china clay.

[0037] The preparation process of the high-barrier agent is as follows: add 10 parts of styrene and 1 part of butadiene into the reaction kettle, react for 20 minutes under the conditions of a temperature of 40 ° C and a pressure of 15 MPa, and then add 10 parts of polybutylacrylate, After reacting for 10 minutes, add 7 parts of polyolefin. After reacting for 30 minutes at the same temperature and pressure, add 8 parts of china clay (concentration: 9%). Raise the temperature to 150°C and reduce the pressure to 8 MPa. React for 4 hours under this condition, and the reaction is complete. After it is completely cooled, the product is taken out to obtain the high barrier agent.

[0038] A preparation method for high-barrier coated white cardboard, compri...

Embodiment 2

[0051] The high barrier agent consists of the following components in parts by mass: 10 parts of styrene, 2 parts of butadiene, 20 parts of polybutyl acrylate, 10 parts of polyolefin, 2 parts of isooctyl acrylate and 8 parts of china clay.

[0052] The preparation process of the high barrier agent is as follows: add 10 parts of styrene and 2 parts of butadiene into the reaction kettle, react for 30 minutes under the conditions of temperature 50°C and pressure 20 MPa, and then add polybutylacrylate 10-25 After reacting for 115 minutes, add 10 parts of polyolefin, add 8 parts of China clay (concentration is 8%) after reacting at the same temperature and pressure for 35 minutes, increase the temperature to 180 ° C, and reduce the pressure to 10 MPa. Under this condition, react 4- 6h, after the reaction is complete, wait until it is completely cooled to take out the product, and the high barrier agent can be obtained.

[0053] A preparation method for high-barrier coated white car...

Embodiment 3

[0066] The high barrier agent is composed of the following components in parts by mass: 25 parts of styrene, 4 parts of butadiene, 25 parts of polybutyl acrylate, 12 parts of polyolefin, 5 parts of isooctyl acrylate and 15 parts of china clay.

[0067] The preparation process of the high barrier agent is as follows: add 25 parts of styrene and 45 parts of butadiene into the reaction kettle, react for 50 minutes under the conditions of temperature of 65 °C and pressure of 20 MPa, and then add 25 parts of polybutylacrylate, After reacting for 18 minutes, add 12 parts of polyolefin, react at the same temperature and pressure for 35 minutes, add 15 parts of China clay (concentration: 6%), raise the temperature to 200°C, and reduce the pressure to 10 MPa, and react for 5 hours under this condition, and the reaction is complete After it is completely cooled, the product is taken out to obtain the high barrier

[0068] A preparation method for high-barrier coated white cardboard, com...

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Abstract

The invention discloses a high barrier coating white cardboard, which comprises a cardboard base and a high barrier coating. The high barrier coating coats the front and / or the back of the cardboard base. The high barrier coating is made of a high barrier agent. The high barrier agent consists of the following components: in parts by mass, 8 to 30 parts of styrene, 1 to 5 parts of butadiene, 8 to32 parts of polybutyl acrylate, 7 to 15 parts of polyolefin, 1 to 8 parts of 2-ethylhexyl acrylate and 5 to 28 parts of clay. The high barrier coating white cardboard is obtained by steps of pulping,mesh putting, pressing and dewatering, preliminary drying, internal online coating and re-drying. The high barrier coating white cardboard of the invention has good barrier performance towards water vapor, fragrance and oxygen, and can be recycled and used, and is very environmentally-friendly. In addition, the manufacturing process of the high barrier coating white cardboard is simple, and the cost can be significantly reduced. In comparison with the traditional PE film coating and paper making technology, the production efficiency can be increased by 10 times, and the transportation cost canbe saved by 25 to 40% and the inventory cost can be saved by 15 to 25%.

Description

technical field [0001] The invention belongs to the field of high-barrier coated paper, and in particular relates to a high-barrier coated white cardboard and a preparation method thereof. Background technique [0002] The barrier property of paper packaging means that paper packaging has a shielding function for water vapor, aroma, oxygen, etc. However, the main structure fiber of paper itself has poor barrier property and cannot meet the barrier property requirements of paper packaging. [0003] In the prior art, PE (polyethylene) coating is mostly used to produce white cardboard as a packaging material with barrier function. However, PE coating is carried out by using off-machine coating. The production process is relatively complicated, the production efficiency is low, and the manufacturing cost is high. Moreover, PE coated paper is difficult to degrade in nature, and the cost of factory recycling is high. With the successive promulgation of international environmental...

Claims

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Application Information

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IPC IPC(8): D21F11/00D21H19/40D21H19/48D21H19/58D21H27/00
CPCD21F11/00D21H19/40D21H19/48D21H19/58D21H27/00
Inventor 任小平吴义荣徐海东卢诗强孙王宝张丽袁化乾倪冻林马洪生
Owner ZHUHAI S E Z HONGTA RENHENG PAPER