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Coating method of chocolate temperature-sensitive food coating film and coating system for implementing method

A coating method and coating film technology, applied in the field of coating systems, can solve the problems of mutual adhesion, film shrinkage and deformation, difficulty in controlling the amount of emulsion coating, and achieve the effects of good uniformity and improved adhesion.

Active Publication Date: 2013-04-03
HAINAN SHINER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Emulsion coating is carried out on the existing coating equipment. During the coating process, there is a phenomenon of slight adhesion between the roller and the film, which makes it difficult to control the tension and film movement during the coating process, resulting in the film passing through There is obvious shrinkage and deformation after heating in the oven, and it is also difficult to control the amount of emulsion coating

Method used

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  • Coating method of chocolate temperature-sensitive food coating film and coating system for implementing method

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Experimental program
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Effect test

Embodiment 1

[0031] 1. Unwinding process: Under a constant unwinding tension of 10N, the BOPP reel-shaped film is flatly unrolled into a continuous and stable operation;

[0032] 2. The first surface corona treatment process: the corona treatment power is set to 6kW;

[0033] 3. The first side primer coating process: the solvent-based polyurethane adhesive is coated on the BOPP film through a metal chrome-plated anilox roller, and the glue amount of the adhesive on the film is 0.3g / m 2 , the number of metal anilox roller lines is 150 lines, and the machine running speed is controlled at 220m / min;

[0034] 4. The drying process of the first primer: use hot air to dry, and then send it into the oven after the air is heated. The temperature is set at 80°C, and the drying time of the film in the oven is 1 second. The tension is set to 90N;

[0035] 5. The first surface coating process: the coating film after primer coating enters the surface coating process, adopts reverse gravure coating, a...

Embodiment 2

[0045] 1. Unwinding process: under a constant unwinding tension of 30N, the BOPP reel-shaped film is flatly unrolled into a continuous and stable operation;

[0046] 2. The first surface corona treatment process: the corona treatment power is set to 6kW;

[0047] 3. The first side primer coating process: the solvent-based polyurethane adhesive BOPP is coated on the film through a metal chrome-plated anilox roller, and the glue amount of the adhesive on the film is 0.4g / m 2 , the number of metal anilox roller lines is 200 lines, and the machine running speed is controlled at 180m / min;

[0048] 4. Drying process of the first primer: use hot air to dry, heat the air and send it into the oven, where the temperature is set at 110°C, and the drying time of the film in the oven is 1 second. The tension is set to 130N;

[0049] 5. The first surface coating process: the coating film after primer coating enters the surface coating process, adopts reverse gravure coating, and through t...

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Abstract

The invention provides a coating method of a chocolate temperature-sensitive food coating film and a coating system for implementing the method. Kiss coating is adopted in bottom coating and surface coating, and less wax emulsion and silicon dioxide anti-sticking agent are added in a surface coating oxygen barrier type PVDC (Polyvinyl Dichloride) emulsion in a first surface coating procedure and a surface coating low-temperature heat seal material in a second surface coating procedure. The coating film has the characteristics of high barrier, heat seal properly and capability of being compounded with a paper body through a UV (ultraviolet) adhesive, is smooth in surface, walks on coating equipment easily without larger tension, and has no remarkable shrinkage deformation after being heated by an oven without influencing the property of a product.

Description

technical field [0001] The invention relates to a coating method for a coating film suitable for heat-sensitive food packaging and a coating system for implementing the method. Background technique [0002] Heat-sensitive food is a type of food that is unstable when exposed to heat. It is prone to deterioration reactions such as decomposition, polymerization, and oxidation at high temperatures, such as candy, chocolate, and butter. When packaging this type of food, the selected packaging film needs to meet the following three conditions at the same time: 1. High barrier property, food can be kept fresh, the most important thing is to prevent the entry of water and oxygen, prevent food from deteriorating, and extend the shelf life; 2. A certain heat-sealing strength, at least 2N / 15mm, can ensure that candy, butter and other foods will not leak or break bags during transportation and storage after being bagged; 3. Low sealing temperature, ensuring sufficient After heat-sealin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/04B05D7/24B05D3/02B05C9/04B05C13/02
Inventor 杨强黄宏存云大勇
Owner HAINAN SHINER IND
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