Injection molding sign gilding craft _ injection brands _ bronzing plate production

Injection molding brands gilding craft injection plate hot stamping is also called hot stamping processing, hot stamping is a kind of plastic products surface decoration processing technology. Through high temperature heating hot stamping iron, hot stamping film laminated iron to the injection plate surface, to decorate the effect of the sign. Basic form a flat iron and iron round two, flat iron the impression is refers to the datum plane, hot stamping in the plane of the product or a part of the plane. Silicone mold can be out by stamping on the plane, also can be smooth silicon sheet stamping on the bump of the graphic. Refers to the hot stamping part is a heating roller of silicon, but hot stamping round or oval. Injection when hot stamping plate making to control the temperature, pressure and time, to ensure the quality of hot stamping delicate and beautiful, avoid hot pressure does not reach the designated position or other parts of the residual hot stamping foil. Before the hot stamping should be paid attention to the following: 1. Plastic parts surface is bright and clean level off; 2. Hot stamping of injection molded parts need not remover, best to can only choose not impede the remover of secondary processing, special cannot use contain organic silicone oil remover; 3. Hot stamping surface requirements clean oil, no dust, no water. Temperature control: hot stamping is an important process parameters of hot stamping temperature, low temperature hot stamping does not reach the designated position, high temperature will lead to imprint discoloration, deformation, even the bad parts. General stamping machine has automatic temperature control device, usually HIPS, ABS, PMMA, plastic hot stamping temperature of 160 ~ 180 & deg; C。 A problem, to note here is the hot stamping machine more temperature measuring point position is located in the heater parts, and hot stamping silica gel plate surface temperature and temperature as shown on the thermometer has a difference. The temperature varies by machine, hot stamping temperature correctly or not observed after hot stamping marks and hot stamping film of the foil can be seen. If the temperature is high, the residual of the foil print edges appear rainbow or severe wrinkles, even very hot. If the temperature is low, imprinting is incomplete or not completely transfer. Pressure control: when hot stamping to test first, gradually from low to high pressure adjustment, as far as possible with a lower pressure ironing out the uniform and complete picture and text, and finally determine the pressure to stabilize a formal production. 5 mpa pressure is ok. Hot stamping of polypropylene plastic, pressure to raise some. With metal stamping foil stamping thermoplastics, pressure to raise to more than 2 mpa. For thermosetting plastics, the pressure can be raised to 4 ~ 10 mpa, the premise is not crush parts for the line. Time control: under the condition of normal temperature hot stamping time shoulds not be too long, generally within 2 seconds, more than the normal flat iron within 1 second. Time control and temperature and pressure have a certain relationship, the machine temperature when it hasn't reached stamping time need to stay more than 1 - 2 seconds, when the higher temperature hot stamping will need to reduce the time, specific attention should be paid to observe the state of the product and adjust. The three control points within a certain range can be a slight adjustment, complement each other. For example: in the lower limit of temperature, with increasing pressure and prolong time can also play a role in normal temperature effect. If the temperature is high, with less time, to reduce the pressure, also can get the normal effect.