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Rainbow film, also known as rainbow film, dazzling film, iridescent film, laser rainbow film, etc. It is completely different from the colored plastic film that we commonly use for printing and dyeing. It is a plastic composite film that melts and extrudes two or more resins with different refractive indices, and sequentially stacks them at intervals of more than 100 layers, each with a thickness of only a few hundred nanometers.
Rainbow film is a new and high-tech decorative plastic film material. After passing through a production equipment that is more than 20 meters long, crystal clear plastic particles are slowly sucked in, and a colorful rainbow film comes out from the other end. It uses the principle of light interference, where white light enters the film from the outside, undergoes light interference, and then reflects back to produce colorful colors. When the observation angle of the rainbow film changes or different base colors are used, the color will also change, creating a colorful and unique packaging decoration effect. Rainbow film has opened up a new field for product packaging. Surprisingly, without adding any dyes or printing pigments during the entire production process, maintaining the transparency and dazzling visual effect of the film itself is an effect that cannot be achieved by transparent films or colored films made by adding colorants or printing. The cost of this rainbow film is much lower than that of aluminum plating or laser film, which is a major breakthrough in the application of colored films.
Subsequent processing applications: The unique color effect of rainbow film or the use of different patterns, base colors, and surface processing, such as printing, hot stamping, embossing, etc., presents endless and innovative decorative effects. Its application fields are very wide. Rainbow film can be overlaid with opaque paper, plastic film or textiles, and can be used for gift packaging, decorative surfaces of hard boxes and pipes, greeting cards, menus, shopping bags, ribbons, adhesive labels, trademarks, book and magazine covers, and so on. Rainbow film is coated with transparent materials and can be processed into silk for textile processing or carved into powder for cosmetics and pigments. It can also be directly used for gift packaging, display decoration, handicraft materials, stage scenery, festival decoration, ribbons, flower garlands, and more. Rainbow film is laminated with thicker thermoplastic materials and can be used as thermoformed packaging display products, lampshades, tableware mats, shower curtains, blackout curtains, umbrellas and raincoats, handbags, shoulder straps, dressing box shells, etc.
A production equipment for optical rainbow film, utilizing extrusion composite method and light refraction principle process, using 3 extruders. Two extruders A and B are passed through multipliers A/B/A/B/4x, and then through four 4x multipliers, A and B are combined into 256 layers of 4X4X4X4. Finally, A and B are encapsulated and molded by layer C. Enter the ABC allocator. Finally, enter the T-shaped mold and cast the film.
The advantage of this structure lies in:
Replaced the expensive equipment in the United States, improved the multiplier structure of imported equipment, and increased the refractive index of light,
By using a new type of multiplier, the refractive angle and number of layers of light can be changed through the multiplier.
Adopting a multiplier and distributor integrated design, simplifying the connection and combination structure, and avoiding the drawbacks of material leakage and residual raw materials
Adopting extrusion casting method has better cost-effectiveness and quality stability than laser coating method. Having ultra-high market competitiveness
Structural components; S1 is composed of three extruders. The extruder is equipped with a reducer, motor, screw, screen changer, and hopper,
S2-3 extruders are ABC., where layer C is the cladding layer, and layers A and B are the refractive layers
S3, The multiplier is assembled with 4 sections and 4 layers, including 4 layers, 16 layers, 64 layers, and 256 layers,
The S4 allocator adopts the ABC structure.
S5-T mold, hanger structure.
