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Jiangsu Kuntai Machinery Co.,Ltd

Bronzing Machine Decision Factors

Hot stamping process is a special printing process without ink, bronzing refers to under certain temperature and pressure of the electrochemical aluminum foil stamping to process on the surface of the substrates, hot stamping machine is hot stamping process equipment.

Bronzing is the process of stamping the aluminum foil on the substrate surface at a certain temperature and pressure. Electrochemical aluminum stamping with a strong metallic luster, bright colors, never fade. In particular, gold and silver electrochemical aluminum, with its magnificence, exquisite and elegant decoration, embellished the surface of the printed matter, enhanced the artistic quality of the printing and promoted the publicity effect of the theme. Its brightness greatly exceeds printing gold and printing silver, make the product has high-grade feeling and give a person the enjoyment of beauty. At the same time due to the electrochemical aluminum has excellent physical and chemical properties, have played an important role in protection of print, so hot stamping technology is widely used in high-grade, exquisite packaging decoration trademarks, calendars and books and periodicals cover prints of the; Secondly, electrochemical aluminum ironing is very extensive, from general book covers, trademark patterns, publicity advertisements, plastic products to daily provisions, from paper to leather, cotton, etc. On the other hand, the bronzing is a kind of dry processing method, which can be packed and transported immediately after the work is burned. Therefore, hot stamping technology is widely adopted, the application scope of stamping is still expanding.

Process flow

Preparation of stamping - plate - pad - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Hot stamping principle

The process mainly USES the principle of heat transfer. Under the pressure under the action of electrochemical aluminum contact with hot plate, substrates, due to temperature of electric heating plate hot plate has a certain quantity of heat, electrochemical aluminum heat melt hot melt dyeing resin layer and adhesive, colored resin layer viscous force is reduced, and after special thermal melt adhesive viscosity increases, aluminum layer and electrochemical aluminum membrane stripping of transfer printing on the substrates at the same time, as the pressure discharge is divided, adhesive rapid cooling solidification, firmly adhere to the aluminum layer on substrates to complete a hot stamping process.

From the composition and mechanism of hot stamping of electrochemical aluminum, in order to get the ideal effect of hot stamping, hot stamping the electrochemical aluminum foil used must meet the following requirements: the bottom color even, without clear off color, color and color spot; The glue coating is uniform, smooth and white, without obvious stripe, sand point and oxidation phenomenon. The gloss is good; Strong strength; High definition; Type right

Decision factors

The perfect bronzing effect depends on the combination of temperature, pressure and stamping speed. Therefore, to control the quality of the bronzing, it is necessary to master the reasonable hot stamping temperature, the stamping pressure and the stamping speed. This creates a good condition for the bronzing, which can finally guarantee the quality of the stamping.

temperature

Temperature has a very important influence on stamping, the temperature must be controlled in the corresponding range, so that the dyeing resin layer and adhesive can be properly melted to ensure good transfer of the aluminum layer.

If the temperature is too high, melting, hot stamping by the electrochemical aluminum melt off around and produce paste version, will cause the high temperature at the same time electrochemical dyeing resin and aluminium layer chemical changes occur, hot stamping products less brightness and loss of metallic luster, and even make imprinting fog porphyritic or blister; But if the temperature is too low and the melting is not sufficient, it will also cause ironing or ironing, the impression is not strong, easy to fall off, or lack of pen, ink and hair.


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