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Non-treatment frosted varnish ink for PET (polyethylene terephthalate) film gravure
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A treatment-free, varnish technology, applied in the ink field, can solve the problems of high cost, low aesthetics, and poor flexibility, and achieve the effects of low cost, improved aesthetics, and convenient stocking
Active Publication Date: 2015-08-26
DONGCHANG IND LINHAI CO LTD
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Problems solved by technology
In the printing process, it is necessary to achieve a matte effect on the PET film, which usually requires a characteristic PET matte film. The existing matte film is divided into single-sided matte and double-sided matte due to technological reasons, but cannot To achieve partial matte on the same side, the aesthetics is low; and the matte degree of the existing matte film has few specifications, and the printing factory cannot adjust the matte degree of the matte film on the printing site, and the flexibility is poor; in addition, PET matte In the film market, the usage is small, the product specifications are small, the cost is high, and it is difficult to order
Method used
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Embodiment 1
[0026] Choose the varnish prepared from the varnish 1 formula, first prepare the varnish ink mixture, varnish: diluent: curing agent = 10:10:0.5; prepare diluent: ethyl acetate: n-propyl ester = 7:3.
[0027] Gravure high-speed printing machine printing, printing speed 160-170M / min, printing plate roller: electric engraving, plate depth 38 microns, oven temperature 65-70°C, after printing, in a drying room at 50-60°C, mature for 24 hours Can.
[0046] Adhesion: 100 grid method test: 98% does not peel off.
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Abstract
The invention discloses non-treatment frosted varnish ink for PET (polyethylene terephthalate) film gravure. The ink is characterized by comprising varnish, a diluent and a curing agent in the weight ratio being 10:(4-18):0.5, wherein the varnish comprises components in percentage by weight as follows: 25%-40% of a polyurethane resin liquid, 3%-7% of butyl acetate, 8%-12% of ethyl acetate, 8%-25% of an inorganic pigment, 1%-3% of PE waxpowder, 2%-4% of a dispersing agent, 15%-20% of a modified material and 20%-35% of n-propyl acetate. With the adoption of the ink prepared with the formula, a common PET light film can be locally matted or completely matted through printing, and the beauty of a product is improved; the matt degree of the product is freely controlled to range from 2 degrees to 15 degrees through adjustment of the addition proportion of the diluent of the varnish ink and the depth of a printing plate; the matt effect is realized through the common PET film, the cost is low, and preparation is convenient.
Description
technical field [0001] The invention belongs to the technical field of inks, and in particular relates to a treatment-free matte varnish ink for gravure printing of PET films. Background technique [0002] PET polyester film, referred to as PET film, is characterized by high temperature resistance, good printing, easy processing, voltage resistance, and good insulation. It is made of polyethylene terephthalate as a raw material and made into thick sheets by extrusion. Biaxially stretched film material. It is a colorless, transparent, glossy film with excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high and low temperature resistance, chemical resistance, oil resistance, air tightness and fragrance retention Good, it is one of the commonly used barrier composite film substrates. In the printing process, it is necessary to achieve a matte effect on the PET film, which usually requires a characteristic PET matt...
Claims
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Application Information
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