The curing process of screen printing silicone is a key step to ensure the printing effect and product quality. During the curing process, the following matters need to be noted:
Mixing ratio:
The mixing ratio of curing agent and silicone must be strictly in accordance with the product instructions or process requirements.
Inaccurate ratio may lead to incomplete curing, inconsistent curing speed or substandard performance after curing.
Stirring evenly:
After the curing agent is added to the silicone, it must be fully stirred with appropriate tools (such as a glue knife) to ensure that the two are mixed evenly.
Uneven stirring may lead to local poor curing or performance differences.
Operating environment:
The curing process should be carried out under certain temperature and humidity conditions to ensure the smooth progress of the curing reaction.
Too high or too low temperature, too high or too low humidity may affect the curing speed and curing effect.
Baking conditions:
The baking temperature and time should be set according to the type of silicone and curing agent, the printing substrate and the required curing effect.
During baking, ensure uniform heating to avoid local overheating that causes product deformation or damage.
After baking, proper cooling should be carried out to prevent the product from deforming or cracking due to rapid temperature changes.
Bubble treatment:
During the curing process, if there are bubbles in the silicone, measures should be taken to eliminate them.
You can use a vacuum machine for vacuum treatment, or use a diluent to dilute the silicone to reduce the adhesion of bubbles.
Curing agent selection:
The appropriate curing agent should be selected according to the type of silicone, the printing substrate and the required curing effect.
Different types of curing agents have different curing speeds, curing temperatures and post-curing properties.
Safety issues:
The curing agent may cause certain irritation or harm to the human body, so appropriate protective equipment such as gloves and masks should be worn during use.
The curing agent should be stored in a cool, dry and well-ventilated place, away from fire and children.
Post-curing inspection:
The product should be inspected after curing to ensure that it meets the quality requirements.
The inspection content includes but is not limited to the degree of curing, hardness, adhesion, weather resistance, etc.
In summary, the curing process of silk screen silicone needs to pay attention to the mixing ratio, stirring uniformity, operating environment, baking conditions, bubble treatment, curing agent selection, safety issues and post-curing inspection. Only by strictly following the process requirements can the quality and performance of silk screen silicone products be ensured.