Crystal refers to the natural quartz crystal. Pure crystal, very beautiful, hexagonal columnar crystal, clean and colorless, shiny, and able to reflect the colorful colors in sunlight. If there are impurities, it will have color, such as the famous topaz, amethyst and so on. However, there are not many natural large crystals, which are generally man-made. When the colorless quartz is heated to 2000°C, a transparent single crystal is formed. Various advanced crafts and lenses are produced by cutting, grinding, etc. High temperature resistance, wear resistance, resistance to acid and alkali corrosion, but its high cost, low processing efficiency, and the actual life of the "crystal handicrafts" is processed with plastic products such as organic glass, transparent resin crystal glue, these crystals Plastic transparency is very good, looks like crystal, easy processing and production, easy to buy raw materials, the price is cheap, you can mass production of machinery can also be hand-made by the family.
This crystal technology is now used in conference souvenirs, corporate promotional items, craft gifts, souvenirs, decorative items, etc. The crystal crafts have its own unique ornamental and collectability, and the application of screen printing technology in crystal crafts. It is not only to improve its craftsmanship and ornamental quality, but also that most enterprises and institutions have printed relevant PR texts and designs on the handicrafts so that when they are watched, they unknowingly play a role in image propaganda and increase the visibility of the company.
The following briefly introduces its process flow and corresponding production methods. The process flow is: Molding - casting molding two major steps. The role of the mold is to facilitate the processing of raw materials, facilitate mass production. Although the proportion of various crystal rubber compound is different, the production process is the same. Formula (calculated by mass ratio): 100 parts of plexiglass monomer (polymethyl methacrylate solution), <6 parts of organic glass plate (forming 3 to 5 mm thickness), 4 to 6 parts of dibutyl phthalate solution, Azobisisobutyronitrile white crystals (toxic, safe to operate, wear protective gloves and supplies) 0 to 1 serving.
The mold is generally made of a flat glass plate, such as a variety of simple square, round mold, glass glass knife can be used to cut the silicon glass (plate glass) to the desired geometry and wall edge, and then use glass glue to stick the edge in the floor On the glass, the glass adhesive should be stuck on the outside of the mold when bonding, such as the uneven edge of the edge of the application of the grinding wheel. If the production of high-precision craftsmanship requires the use of silicone rubber or metal to make a three-dimensional mold, the degree of smoothness in the mold is directly proportional to the surface finish of the molded product.
Operation method: First, the plexiglass monomer is held in the enamel container, and the plexiglass plate is dissolved in the monomer and mixed uniformly according to the ratio, and then dibutyl phthalate and azobisisobutyronitrile are added, and the mixture is stirred and mixed evenly. After eliminating the bubbles generated during stirring, the slurry is poured into the mold for polymerization. After the mold is opened, the transparent plexiglass product is obtained. If a transparent product is to be made with various colors, a small amount of organic substances may be added to the ingredients. Pigments, mixed to produce a product with colorful effects. If you want to make all kinds of imitation amber crafts with moulds, you must first park the selected small models, biological specimens, coins, toys, etc. Fill the mold cavity again. It can also be placed in the mold before casting.
In screen printing processing decoration, 300 to 420 mesh nylon colored screens should be selected. Slant stretching screens are used to make screens. The film should not be too thick. It can be printed on a variety of plastic inks and can be printed on the surface of finished products. It can also be printed on crafts. The specific method is to polymerize and paste most of the slurry, remove it, place it on the positioning module of the handprint table, and use manual printing to print graphics. The ink used should be compared with the slurry. To see if they dissolve each other, use non-reactive inks for printing. The decorative layer outside the mold should also be tested so as not to damage the product quality. When the printing is completed and the semi-finished product is placed in the mold and filled and sealed, the graphic and text are sealed in the middle of the handicrafts. For arc surface and curved surface printing, transparent stickers can be used to print first and paste them well before filling; when gold-plated graphics are required, gold stamping machines can be used in addition to gold imprints to emulate hot stamping. Ink or embossed inks are used for imprinting, that is, highlighting text patterns to imitate the effect of foil stamping. This method is also suitable for printing on various craftwork surfaces or trademarks, and the ink color and background color needed can be similar.