Due to the heat of the image, the color of the image of the plastic laminating machine will be stronger than that of the water transfer, and it will not fade easily. It has corrosion resistance, impact resistance, aging resistance, and It has the characteristics of grinding, high temperature resistance, fire resistance, and can keep the color for ten to decades. Therefore, the thermal transfer technology is especially suitable for appliances, daily necessities, building materials and other objects that have special requirements for image retention. For example, thermal transfer technology can be used to print trademarks, barcodes, and labels on commodities.
In terms of market demand for trademark laminating machines, with the continuous development of the commodity economy, various manufacturers and departments have higher and higher requirements for the trademark, label and packaging beauty of their own products. For the printing industry, the concept of printing is no longer The traditional paper in people's impression is printed. From our daily necessities to office appliances, to products in various industries such as telecom, decoration, and craftsmanship, we need more, better and more practical external packaging, and most of these packaging are realized by transfer printing. , So the transfer industry has a very broad and deep market space.
The film used in the thermal laminating process of our laminator mainly includes polyester film and polypropylene film. Generally, polypropylene film is used when covering thinner films, and thicker polyester film can be used for printed products that require additional protection. Material market. The price of polyester film is more expensive than polypropylene film, but it has high strength and can protect the printed products better. If both sides of the printed product need to be laminated, it is best to use polyester film equipment consumables. In the lamination of digital printing products, it is mainly necessary to avoid problems such as curling of the printed product after lamination in Central China. Therefore, if conditions permit, cover both sides of the printing material as much as possible; if only one side of the paper is coated without the other side, curling is very easy to occur. However, it should be noted that only single-sided lamination can be applied to the cover of the perfect binding book. Never cover the second and third front cover, otherwise the book block and the cover cannot be firmly bonded to the printing technology.
Secondly, we also need to figure out the following two questions before laminating:
1. What problem do you plan to solve for the customer?
2. Where are the technical points of the laminator?
Printers use both cold adhesive and hot adhesive technologies to complete large-volume laminating work. They can use one technology alone or a dual system. Generally speaking, hot-adhesive film is the most common and the cheapest. It is divided into three different types of film materials: polyester (PET), polypropylene (OPP) and nylon.
In order to make the product of the laminating machine not wrinkle after folding, you can choose OPP film. Regarding the selection of laminating materials, since laminating may affect the color reproduction of digital printed products, this is mainly because the films used in laminating are not necessarily 100% packaging machines or transparent films, so the color balance influential.
The main factors affecting the anti-counterfeiting performance of the laser holographic trademark of the trademark laminating machine are the type of trademark and the location of the trademark. Different types of laser holographic image anti-counterfeiting trademarks have different anti-counterfeiting effects. Even the same kind of anti-counterfeiting trademarks have different anti-counterfeiting effects due to different locations.
The laser holographic image anti-counterfeiting trademark of the trademark laminating machine is very convenient to use and has good adaptability to the labeling machinery. Because of the different application of glue and other adhesives, there will be no stains on the production line, especially for the packaging of higher-end hair. The effect is more obvious. This trademark is currently the largest in use. But it has a fatal shortcoming that it can be used repeatedly. After being removed from the lower position, it can be completely glued to another position, so that some criminals can use the old packaging and trademarks to counterfeit, thus affecting the anti-counterfeiting effect. From the perspective of anti-counterfeiting, such trademarks should not be used as anti-counterfeiting trademarks. Therefore, some people in the industry have introduced higher-tech laser holographic image technology, hoping to improve its anti-counterfeiting effect. Is this effort effective and worth it? We can get a clear answer by looking at the degree of production of anti-counterfeiting trademarks by the trademark laminating machine.
Temperature is the primary factor for pre-coating film laminating, because the adhesive on the pre-coating film is hot-melt adhesive, temperature determines the melting state of the hot-melt adhesive, and determines the direction of hot-melt adhesive molecules to BOPP film, printed matter ink layer, paper, etc. The penetration capacity and diffusion capacity. Although the increase in the temperature of the film is helpful for the enhancement of the bonding strength, too high temperature will cause the film to shrink, the surface of the product will be shiny, blistering, and the product will wrinkle. According to practical experience, the film temperature should be controlled between 70 and 100°C.
The surface of the paper of the laminating machine is not smooth, and only under the appropriate pressure, the hot melt adhesive in the molten state can completely cover the surface of the printed matter, and the laminating product is bright, and the bonding effect from the laminating machine is good. The pressure is small, and the bonding is not strong; the pressure is higher, which helps to improve the bonding force between the film and the paper product. However, if the pressure is too high, it is easy to cause wrinkles in the product, and it is easy to damage and deform the surface of the rubber roller, reducing the service life of the rubber roller. As the pressure increases, the contact pressure between the rubber roller and the heating roller increases, which increases the load and wear of the shaft heads and bearings of the two rollers of the laminating machine, and at the same time increases the load on the transmission system. Too much pressure will affect the service life of the whole machine.
The working mechanism of the pre-coating film laminating machine is to bond the plastic film coated with the adhesive and the paper printed matter after heating and pressing to form a paper-plastic product. It is a common paper printed matter at present One of the finishing processes. The coated printed matter has an extra layer of thin and transparent plastic film on the surface, which makes the surface smoother and brighter, which not only improves the gloss and fastness of the printed matter, and prolongs the service life of the printed matter, but the plastic film is also waterproof, Anti-fouling, abrasion resistance, folding resistance, chemical corrosion resistance and other protective functions.
In the pre-coating film method, the film manufacturer directly purchases the pre-coating film laminating machine, and when the film is needed, the film and the paper printed matter are hot-pressed on the pre-coating film laminating machine to complete the filming process. The pre-coating film process began in the 1990s. The hot-melt adhesive or low-temperature resin was uniformly coated on the film substrate in a quantitative and uniform manner through special equipment, and the result was a pre-coating film.
The coating categories used in the pre-coating film laminating machine industry are as follows:
1 The colorful coated ceiling is made of color-coated metal plate, imported PVC high-gloss film, PET phantom color film, coated with special adhesive on the surface of the board, and the surface pattern is rich in color and does not fade. Abrasion resistance, impact resistance, waterproof, fireproof, clear and convenient, etc., are the fashion trends of today's decorative ceiling products
2PVC high-gloss film has rich flexibility, gloss and diversified colors, completely changing the single cool color of the metal ceiling surface
3PET Symphony Film is currently the world's leading new green environmental protection product. It has excellent durability (weather resistance, corrosion resistance, chemical resistance) and anti-fouling ability, non-toxic and pollution-free, and has many superior performances of UV protection. And the application of light method fully caters to people's longing for green, advocating environmental protection, and pursuing the concept of fashion.