In the process of bronzing, the oxidation of the bronzing paper will cause huge losses to the customer and is almost irreparable. Please see the picture below for the gilding paper oxidation display.

1, after printing, bronzing and then laminating process, resulting in large area oxidation, heavy losses! As shown below

2、在黑卡上烫金,结果全部氧化，造成巨大的损失。

3. The surface of the pearl paper is bronzing, and the position of the bronzing is spotted.

4. Oxidation occurs when the touch paper/touch film is not noticed.

5, other reasons will also cause gilding paper oxidation

Some typical cases have been shared above, just to reduce and avoid the risk of bronzing oxidation and reduce losses. Therefore, the reasons and formation process of bronzing oxidation are discussed here, and solutions are found for reference:

The conditions for the formation of bronzing oxidation:

1, a mixture of water (such as glue)

2, carbon black (such as various inks)

3, acid and alkali chemical components (such as black and pearl paper)

4, the production process is unreasonable (for example, after bronzing)

1, water

1 oxidizes the enamel process, the water in the glue will oxidize through the aluminum layer in the paper and hot stamping paper, as shown below:

2 If the printing surface is too oily and the drying time is not enough, it will cause oxidation of water and aluminum layer. If the printing ink does not dry out, it will be gilded and easily oxidized.

2. The substrate contains carbon black or acid and alkali components and other chemical components. It is easy to oxidize directly by directly printing the aluminum layer.

3. Production process problems:

1 hot stamping paper is directly applied to the ink, without the isolation layer in the middle, it is easy to oxidize with the carbon black component or acid-base component in the ink;

2 hot stamping process

3 after the bronzing, the UV lamp

4 after bronzing, after UV oil

5 hot stamping process

Bronzing Oxidation Solution

1. Water problem solution:

1 The water in the glue to be smelted before the process is hot-dip and then bronzing; the anti-seepage treatment must be carried out for the need of the enamel process;

2 The substrate storage environment is kept dry, and the monitoring of moisture in raw materials and processing processes is strengthened;

3 The drying time of the glue used in the surface treatment needs to be controlled;

4 use anti-oxidation series of gold foil paper to reduce the chance of oxidation;

2, there are carbon black and acid and alkali chemical composition solutions

1 Avoid direct bronzing directly on the black card and pearl paper surface;

2 Separate the substrate or printed surface from the hot stamping paper by means of isolation, such as oil or glue;

3 In addition to the above method, anti-oxidation series of gold foil paper can be used to reduce the probability of oxidation;

3, production process problems

1 Select matching bronzing paper according to different substrates;

2 When designing the production process, try to avoid the hot stamping paper directly on the ink or avoid the above process.

3 use anti-oxidation series of hot stamping paper to effectively reduce the chance of oxidation;

4 Increase the technical exchange of hot stamping paper, all relevant personnel should be very clear about the seriousness of the oxidation of hot stamping paper and the awareness of prevention in advance. Each department can remind each other (purchasing\process\technology\production), Jiajing people can provide free Technology Exchange.

For oxidation, first of all, our company's customer service in the actual work, constantly understand your current situation, such as hot stamping substrate, hot stamping process, hot stamping substrate color, etc., to understand your needs, give Your professional advice or suggestions, the two sides to communicate more, so as far as possible to avoid the occurrence of oxidation.

For your description, if there is the possibility of oxidation, such as pearl paper, black heavy ink, hot stamping, direct hot stamping on black cardboard, etc., our sales staff will recommend you to use our anti-anti- Oxidation series of gilding paper, anti-oxidation gilding paper developed by our company has been verified by the market for many years, can avoid most of the oxidation problems, thus effectively reducing the risk of oxidation!

Anti-oxidation series of hot stamping papers are available in nearly 40 colors, including gold, silver, black, red, blue, green, gold, silver, sub-grey, etc., and are always stocked.

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