Cause analysis
 

Low temperature leads to viscosity: UV ink viscosity increases and flowability deteriorates at low temperatures (such as below 15 ℃), affecting the printing effect.
High temperature leads to deterioration: Long term high temperature (such as exceeding 30 ℃) may cause separation or polymerization of ink components, resulting in clogging of the nozzle.
Improper storage: Not protected from light or sealed, accelerating ink oxidation or evaporation.

Solution

(1) Adjust the ambient temperature
Heating up (for low temperatures): Place the ink in an environment of 20-25 ℃ and let it stand for 24 hours (avoid direct heating).
Install constant temperature equipment (such as ink bucket heating sleeve, workshop air conditioning) to maintain a stable working environment.
Cooling (for high temperatures: avoid direct sunlight and store ink in insulated containers.

(2) Mechanical assisted processing
Stir or shake well: Use a specialized mixer or manually shake the ink bottle to disperse the sediment again (avoiding vigorous shaking that generates bubbles).

Filtering processing: If there are particles in the ink, filter it with a 1-5 μ m filter before use to prevent nozzle clogging.

(3) Equipment debugging
Adjust nozzle parameters: increase nozzle voltage or decrease spray frequency to adapt to high viscosity ink (refer to equipment manual).
Cleaning system: Thoroughly rinse the pipelines and nozzles with the manufacturer's recommended cleaning solution to eliminate residual solidified ink.

(4) Ink test
Sample testing: Take a small amount of ink for printing testing, observe adhesion, curing effect, and color performance.
Compatibility check: Confirm that the ink matches the current device model and material (such as PVC, glass) to avoid chemical reactions.

Preventive measures
 

Constant temperature storage: Ink should be stored in a cool environment at 15-28 ℃.
Regular use: Avoid prolonged standing of ink and gently shake unopened ink every week.
Batch management: Prioritize the use of old batches of ink to avoid expiration (usually UV ink has a shelf life of 6-12 months).

Precautions

Do not directly heat the ink (such as in a microwave or hot water bath), as it may cause component failure.

Do not mix different brands/models of ink, as it may cause solidification or damage to the nozzle.

If the problem persists, contact the ink supplier for technical support or change the batch.

Through the above methods, most UV ink viscosity problems caused by temperature can be solved.

If it still cannot be restored to normal, it is recommended to replace the ink to avoid equipment risks.

Methods to prevent UV printer ink from thickening due to temperature:

Firstly, raising the ambient temperature can be achieved by installing air conditioning to create suitable temperature conditions for the ink.

Secondly, reasonably reduce the temperature of the car heating device to avoid ink overheating and thickening.

Thirdly, replace the UV ink with a smoother one to improve the ink's inherent characteristics.

If the ink expires, deteriorates, and thickens, it must be replaced with new ink.

In addition, installing filters can reduce the impact of impurities on ink, and when conditions permit, installing a separate negative pressure system can optimize the ink supply environment. Fortune's inkjet UV printers are equipped with independent negative pressure ink supply systems, which can effectively ensure continuous and stable ink supply.

At the same time, regular maintenance and upkeep of the equipment can be carried out, and the ink pipeline can be checked to solve the problem of ink thickening in a multi pronged manner, ensuring smooth printing work.