Reasons and methods of poor curing effect of uv printer ink


Release time:

2016-04-27

Some industry personnel often encounter the phenomenon of incomplete curing of UV ink and sticky surface during the printing and production process of uv printers, which results in unsatisfactory printing results. How is this phenomenon caused? How to solve this phenomenon so as to ensure the print quality, here is a small series of information for everyone to share. UV curing light source power is not enough There are three elements of uv printer uv light curing: 1. Spectrum, that is, whether the light emitted by the light source such as UV lamp is consistent with the absorption spectrum of the cured product. 2. Intensity, that is, whether the light emitted by the light source is sufficient to cause a photochemical reaction of the cured product. Due to the performance and dosage of the sensitizer inside the cured product (UV coating, ink, glue), the light transmittance of the main agent and the amount of agent , Sensibility is also different, so the curing strength requirements are different. 3. Curing speed. Too fast the curing speed can not complete the curing, and too slow will have an adverse effect on the cured product. Such as pattern cracking, poor adhesion, etc. The curing speed varies with different cured products. The fast printing speed of the Uv printer is also the cause of the incomplete curing of the UV ink and the sticky surface. At this time, the printing speed can be reduced or the light source power can be increased. UV curing lamp aging UV lamp tube mainly refers to the lamp tube that can emit ultraviolet light. When it emits light, it is accompanied by high heat, because it not only excites ultraviolet light, but also accompanied by infrared emission. The wavelength of light is concentrated at about 365mm. The proportion of infrared rays depends on different quality. The content of the lamp tube is different. Normal domestic UV lamps have about 30% longer ultraviolet rays, while imported UV lamps have 40-50% content. At the same time, they have low heat generation and long service life, up to 2000 hours, while domestic UV lamps only have 1000 hours. about. With the use of the lamp, the electrode gradually decomposes, and the inner wall of the lamp is deposited, and the transparency and the transmittance of ultraviolet light are gradually weakened. Therefore, the lamp of the uv printer should be tested regularly and the lamp should be replaced in time. UV ink itself has slow curing speed Photo-curing refers to a certain photochemical reaction of UV ink or UV coating under the effective irradiation of ultraviolet rays, so that the cured product becomes liquid and cured to form a pattern. This process can add a photo-curing accelerator to reduce the printing speed or find ink The supplier resolves.

Some industry personnel often encounter the phenomenon of incomplete curing of UV ink and sticky surface during the printing and production process of uv printers, which results in unsatisfactory printing results. How is this phenomenon caused? How to solve this phenomenon so as to ensure the print quality, here is a small series of information for everyone to share.

UV curing light source power is not enough

There are three elements of uv printer uv light curing:

1. Spectrum, that is, whether the light emitted by the light source such as UV lamp is consistent with the absorption spectrum of the cured product.

2. Intensity, that is, whether the light emitted by the light source is sufficient to cause a photochemical reaction of the cured product. Due to the performance and dosage of the sensitizer inside the cured product (UV coating, ink, glue), the light transmittance of the main agent and the amount of agent , Sensibility is also different, so the curing strength requirements are different.

3. Curing speed. Too fast the curing speed can not complete the curing, and too slow will have an adverse effect on the cured product. Such as pattern cracking, poor adhesion, etc. The curing speed varies with different cured products.

The fast printing speed of the Uv printer is also the cause of the incomplete curing of the UV ink and the sticky surface. At this time, the printing speed can be reduced or the light source power can be increased.

UV curing lamp aging

UV lamp tube mainly refers to the lamp tube that can emit ultraviolet light. When it emits light, it is accompanied by high heat, because it not only excites ultraviolet light, but also accompanied by infrared emission. The wavelength of light is concentrated at about 365mm. The proportion of infrared rays depends on different quality. The content of the lamp tube is different. Normal domestic UV lamps have about 30% longer ultraviolet rays, while imported UV lamps have 40-50% content. At the same time, they have low heat generation and long service life, up to 2000 hours, while domestic UV lamps only have 1000 hours. about.

With the use of the lamp, the electrode gradually decomposes, and the inner wall of the lamp is deposited, and the transparency and the transmittance of ultraviolet light are gradually weakened. Therefore, the lamp of the uv printer should be tested regularly and the lamp should be replaced in time.

UV ink itself has slow curing speed

Photo-curing refers to a certain photochemical reaction of UV ink or UV coating under the effective irradiation of ultraviolet rays, so that the cured product becomes liquid and cured to form a pattern. This process can add a photo-curing accelerator to reduce the printing speed or find ink The supplier resolves.

1