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Preparation method of heat-insulation and heat-preservation carton

A technology for thermal insulation and carton, applied in special paper, chemical instruments and methods, paper, etc., can solve problems such as inability to transport long distances, poor thermal insulation effect of thermal insulation cartons, and inability to maintain a long-term constant ambient temperature in the box, etc. Achieve the effect of avoiding loss, avoiding the decline of adhesion and low cost

Inactive Publication Date: 2019-02-01
马鞍山市康辉纸箱纸品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In real life, because of the needs of life, we often need to send some frozen food or food that needs to be kept at low temperature. The insulation effect is poor, and the ambient temperature in the box cannot be kept constant for a long time, which makes long-distance transportation impossible

Method used

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  • Preparation method of heat-insulation and heat-preservation carton

Examples

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Effect test

Embodiment 1

[0019] A method for preparing a heat-insulating carton, the specific steps are as follows:

[0020] 1) Crush the waste paper and soak it in warm water until it becomes soft, beat it at a speed of 500r / min for 3 hours, let the obtained base paper slurry stand for 3-5 hours, remove the suspended impurities, and then perform centrifugation to obtain Pulp standby;

[0021] 2) Mix vermiculite powder, zeolite powder, and perlite and crush them to fine powder with a particle size of 15nm, add them to a vacuum container, then add polyethylene hollow fibers, pressurize to 3MPa, hold the pressure for 15min, and then quickly release the pressure to Normal pressure, repeated pressurization and depressurization 5 times to obtain modified polyethylene hollow fibers;

[0022] 3) Mix the pulp with 15% of the modified polyethylene hollow fiber, and then pour it into the paper machine. 7% of the fiber, the injection pressure is 10MPa, the paper is copied into a paper sheet by a paper machine,...

Embodiment 2

[0031] A method for preparing a heat-insulating carton, the specific steps are as follows:

[0032] 1) After crushing the waste paper, soak it in warm water until it becomes weak, beat at a speed of 600r / min for 2.5 hours, let the obtained base paper slurry stand for 4 hours, remove the suspended impurities, and then perform centrifugation to obtain pulp spare;

[0033] 2) Mix vermiculite powder, zeolite powder, and perlite and crush them to fine powder with a particle size of 20nm, add them to a vacuum container, then add polyethylene hollow fibers, pressurize to 4MPa, hold the pressure for 13min, and then quickly release the pressure to Normal pressure, repeated pressurization and pressure release 4 times to obtain modified polyethylene hollow fibers;

[0034] 3) Mix pulp with modified polyethylene hollow fiber equivalent to 20% of its mass, and then pour it into the paper machine. At the same time, inject supercritical carbon dioxide into the paper machine through a meteri...

Embodiment 3

[0043] A method for preparing a heat-insulating carton, the specific steps are as follows:

[0044] 1) After crushing the waste paper, soak it in warm water until it becomes soft, and beat it at a speed of 800r / min for 2 hours, then let the obtained base paper slurry stand for 5 hours, remove the suspended impurities, and then perform centrifugation to prepare the pulp for later use. ;

[0045] 2) Mix vermiculite powder, zeolite powder, and perlite and crush them to fine powder with a particle size of 30nm, add them to a vacuum container, add polyethylene hollow fibers, pressurize to 5MPa, hold the pressure for 10min, and then quickly release the pressure to Normal pressure, repeated pressurization and depressurization 5 times to obtain modified polyethylene hollow fibers;

[0046]3) Mix the pulp with modified polyethylene hollow fibers equivalent to 25% of its mass, and then pour it into the paper machine. At the same time, inject supercritical carbon dioxide into the paper ...

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Abstract

The invention discloses a preparation method of a heat-insulation and heat-preservation carton, wherein the method comprises the following steps: 1) after beating waste paper, centrifuging to obtain paper pulp for standby application; 2) mixing and crushing vermiculite powder, zeolite powder and perlite, then adding the mixture into a vacuum container, adding polyethylene hollow fibers, and carrying out pressurization and pressure relief treatment to obtain modified polyethylene hollow fibers; 3) mixing the paper pulp with the modified polyethylene hollow fibers, then pouring the mixture intoa papermaking machine, injecting supercritical carbon dioxide into the papermaking machine through a metering pump, papermaking into paper by the papermaking machine, and drying to obtain heat-insulation and heat-preservation paper; 4) gelatinizing starch, then adding high-vacuum silicone grease and hollow glass microbeads, and then stirring to obtain an emulsion; and 5) evenly spraying the surface of the heat-insulation and heat-preservation paper with the emulsion, and then drying and carrying out hot pressing process to obtain the product. The heat-preservation carton provided by the invention has the advantages of easy availability of raw materials, simple preparation, low production cost, and excellent heat preservation effect, fully meets the needs of long-distance transportation offrozen food, and has the prospects of promotion and application.

Description

technical field [0001] The invention belongs to the technical field of carton processing, and in particular relates to a method for preparing a heat-insulating carton. Background technique [0002] Among all kinds of packaging of industrial products, cartons have become the mainstream of the packaging industry. Because of its light weight, foldability, low cost and environmental protection, the specifications are easy to change, high-quality printing can be carried out, and it can be used as a renewable resource after recycling. With the rapid development of the logistics industry, the use of cartons is becoming wider and wider. In real life, because of the needs of life, we often need to send some frozen food or food that needs to be kept at low temperature. The thermal insulation effect is poor, and the ambient temperature in the box cannot be kept constant for a long time, which leads to the impossibility of long-distance transportation. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H27/30D21H11/14D21H15/02D21H13/14D21H19/14D21H19/32D21H21/54D21H21/14B32B29/00B32B33/00D06M11/79D06M101/24
CPCB32B29/005B32B33/00B32B2307/304B32B2439/62D06M11/79D06M2101/24D21H11/14D21H13/14D21H15/02D21H19/14D21H19/32D21H21/14D21H21/54D21H27/10D21H27/30
Inventor 李昌斌
Owner 马鞍山市康辉纸箱纸品有限公司