Problems with setting the core parameters of mold embossing

Problems with setting the core parameters of mold embossing
Pressure parameter debugging
Common problems: Insufficient pressure leads to shallow and blurred embossing texture; excessive pressure causes material rupture or mold deformation.
Setting logic:
Adjust according to the hardness of the material: 8-15MPa is recommended for silicone (40-70 degrees), and 5-10MPa is recommended for leather;
Press in stages: pre-press at 30% pressure for 5 seconds, and then gradually increase to the target pressure (to avoid material displacement).
Case: When pressing a 0.5mm thick TPU film, the initial pressure is set to 6MPa, the holding time is 10 seconds, and the texture clarity is optimal.
Temperature control problems
Common scenarios: Temperature affects material fluidity in the hot pressing process (such as silicone vulcanization and leather softening).
Key parameters:
Silicone hot pressing: 160-180℃ (too high is prone to yellowing, too low is insufficient vulcanization);
Leather hot pressing: 100-150℃ (over 150℃ is prone to carbonization, and release paper is required for anti-sticking).
Abnormal handling: When the temperature fluctuation exceeds ±5℃, check whether the heating tube is aged or the thermostat is calibrated incorrectly.
Pressure holding time setting
Influencing factors: Material thickness and thermal conductivity determine the pressure holding time.
Reference standard:
Thin materials (≤1mm): pressure holding for 5-10 seconds;
Thick materials (>1mm): pressure holding for 15-30 seconds (e.g. 2mm silicone pads need to be pressure held for 20 seconds to ensure the texture is fixed)