Various Width Shrink Film Manufacturer recently told the public that most shrink sleeve labels use acrylic-based cold foil adhesives, but when the label shrinks on the container, the adhesive will cause the shrink sleeve labels to wrinkle. So it must be Making sure the adhesive has the ability to shrink. Anilox rollers are needed to start printing. If cold hot stamping is used in areas with a relatively large shrinkage rate, texture patterns such as diamond or tapered lines can be used to ensure that the hot stamping foil will not crack when shrinking.
The cold foils that can be applied to ordinary labels can be used for shrinking sleeves, especially transparent holographic foils. However, it should be remembered that the ink and cold glue of the shrink sleeve label are printed by the inner printing method, that is, the printed image is viewed through the shrink film. The transparent primer is suitable for colour foil and holographic foil, which can ensure the best transparency of the film so that the hot stamping pattern looks more dazzling.
Some special coatings that can be printed on the surface of the shrink sleeve, including bright pink, matte ink, flexible touch ink and UV cast coating ink, etc., can be used with hot stamping foil to achieve a complementary visual effect. To achieve UV casting on the shrink sleeve label, it is necessary to use UV paint with high heat resistance. If you want to achieve a soft surface effect, you can use a special style of UV matte paint to make the colour graphic and external The surface is in sharp contrast. If you want to highlight the image, matte coating and holographic UV casting can create a more realistic background colour.
PVC Shrink Film
Special surfactants and modified polyurethanes are used in high-viscosity UV coatings, which have excellent flexibility, fluidity and good adhesion, and can be adapted to various plastic films, such as PVC shrink films. According to the physical properties of PVC, PETG, OPS and other commonly used film materials, as well as their respective advantages and disadvantages. Generally, label printing companies should consider the following factors: the functional requirements of heat-shrinkable labels, the cost of film materials, storage costs, product processing technology and customer packaging technology.
The printing ink required for PVC Shrink Film and PETG film is basically the same, but the adhesion of the original PVC shrink film printing ink to the PET surface will slightly decrease. Generally, only a slight adjustment is needed for the white ink. OPS film has a much lower solvent resistance on the surface of the film than PVC film. It requires a new low-corrosion ink system and the total domestic demand is very small, so the cost is usually higher than PETG and PVC printing inks. In addition, automatic sleeve labelling is also adopted. Various Width Shrink Film has higher requirements on the accuracy of automatic sleeve labelling equipment for end-users, so the market is more narrowly applicable.
In short, after more than ten years of development, domestic heat-shrinkable labels have passed a period of rapid growth, but the total demand will still growing steadily. For the future demand for shrinking films of various widths, there are the following characteristics:
1. Based on cost factors, neither end-users nor label printing companies want to increase packaging costs, so for a long period of time, PVC film will still occupy the dominant position in the domestic heat shrinkable label market, and the total demand will also increase.
2. Due to incomplete usage habits and incomplete industrial chain, OPS heat shrinkable labels have always been difficult to expand their market share in Europe and the United States. Similarly, the domestic use of OPS films will not increase significantly.
3. As more and more high-end customers put forward environmental protection requirements, and in order to enhance the display effect, more products will be packaged in special bottles, so the use of PETG film will grow rapidly.
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