The transfer laser card produced by OPP film and PET film can be regarded as a new product among the smoke label environmental protection materials, which not only meets the laser anti-counterfeiting effect of the current industry for producing composite laser paper, but also is in the development course of printing environmental protection materials. A very important step has been taken. Whether it is the manufacturing process of paper manufacturing or the manufacturing process of offset-printed cigarette products, there are many new improvements and new elements in the technology.

Basic process

The basic process for the transfer of laser silver cards is divided into four steps: image processing and plate making, electroforming and imposition, micro pressure, and laser processing.

(1) Image processing and plate making are mainly based on the optical principle to quickly take pictures of the desired light bar pattern. A photoresist of 1.5 to 2 μm is coated on the glass plate of photoresist (prepared in advance), and laser exposure is performed according to the design pattern. The non-laser exposed photoresist is washed away with developer to leave photolithography lines.

(2) Electroforming is the process of spraying silver on the developed photoresist glass master surface to make it conductive, and then electroforming the electroformed silver plate into an electroforming bath to form a wire master (thickness is about 300 μm). Imposition is the use of the imposition machine to make the small version into a large version, and then repeat the process 5 to 7 times to make a big master.

(3) Micro-pressure is usually divided into hard pressure, soft pressure, UV curing, and composite molding. The main features of hard pressure are embossing after aluminum plating. The pressure roll has higher hardness and higher pressure. The main feature of soft pressure is aluminum plating after embossing. The hardness of the pressure roll is low; UV curing is at the same time of molding The UV resin is cured so as to set the texture; the composite molding is used by any of the above four methods, but generally has poor results and is rarely used in normal production.

(4) Laser processing includes coating, transfer, and slitting. The coating is the extraordinary coating of the aluminum or film surface of the material; the transfer is the OPP film, the PET film is coated with aluminum, silver, zinc sulfide, and selenium oxide on the film surface through a vacuum evaporation aluminum machine and will be plated The film surface and the transfer bottom paper are compounded and then peeled by transferring the glue so that the aluminum layer on the film surface is completely transferred to the paper surface; the slitting is mainly based on the width and length required by the customer.

Product advantages

Why OPP film transfer laser silver card, PET film transfer laser silver card is regarded as the printing industry paper environmental protection products, a new masterpiece? The main reason is that the transferred laser silver card is compounded and then stripped by the aluminum layer that has been deposited on the film surface and transferred glue. The pattern of the aluminized layer on the film surface is completely transferred to the surface of the paper, resulting in a plain surface and laser beam effect. The OPP film and PET film, which are not easily decomposed spontaneously, are peeled off, and there is a clear difference between the composite light-beam laser paper (the composite light-beam laser paper is composed of a paper and an OPP film, a PET film is compounded with glue, and the plastic film is not easily decomposed). The transfer of laser silver card paper can be naturally decomposed into organic matter, which has no impact on our living environment.

Puzzle breakthrough

Through the above-mentioned production process, a piece of sheet-transferred laser silver cardboard is manufactured in this way. Other paper jams of different colors are made by vapor-depositing different metal materials, and the production process is probably the same as that of a silver card. However, in the production process, due to the impact of the film platen roller, the finished laser paper will be restricted by the plate distance (the current industry is still unable to produce a non-version plate). So, how to make the sewing thread more fine? Jinjia Group affiliated company, Toyota Optoelectronics Technology, has developed a cloth light column OPP transfer film, no spelling line transfer laser paper jam. At the same time, OPP film and PET film are used to make the transfer paperboard. The transfer card made of OPP film has a better cost performance. Usually, OPP film paper is 400 to 500 yuan less per ton than PET film paper, which is very important for material procurement cost control.

Key points of production

Transfer paper in offset printing should pay attention to several points: transfer paper in the offset printing and easy to drop points, pull ink; transfer paper easily appear high or low paper brightness, more difficult to control; transfer paper is difficult to match the general UV oil black , The phenomenon of printing riot is easy to occur; the color difference of the transfer paper is obvious, and it needs to be constantly adjusted in the printing process.

To sum up, the successful development of a new type of material also requires continuous improvement and improvement of production technology, and at the same time, every production step should be controlled very carefully and carefully. Because transfer paper has very strict production technology requirements, especially in the new film production of the transfer film, vapor deposition of the aluminum layer, film pressure of the light column pattern, selection of the transfer glue, and the cutting distance, these factors directly affect the printed matter. The effect and quality of batch production are stable.