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what is Common Label printing ? Click to enter the Chinese version

If self-adhesive label printing technology introduced is to mark content, logo design, advertising layout and other graphic information printed on special self-adhesive label material, adhesive material is a good printability or special purpose surface paper (in back) coatedwithadhesivewater, coated with adhesive on the surface of the wax or silicone release paper or film base. Label, also known as stickers, can be designed for a variety of shapes, or you can print text and beautiful patterns and then cutting into various shapes. As the self-adhesive label materials used, and therefore, can choose a variety of printing. Such as screen printing, offset printing, flexo printing, letterpress printing, inkjet printing, etc., and various countries and regions of printing in different ways. Toppan Printing is done with a resin version, is a more common applications are generally printed with UV inks, this equipment stacked or satellite, but also hatchback, and now there are more than intermittent linkage color printing units, the self-adhesive materials, processing methods are roll printing, roll paper self-adhesive paper collection more efficient, but also conducive to the subsequent cutting laminating process. Developing countries in the Asia-Pacific region is still relatively backward label printing. In letterpress printing, UV printing inks or using only a few, most of the label printing equipment has been using traditional resin-based ink, this self-adhesive materials have some limitations, many of the quality of the roll of coated paper self-adhesive materials. In China, major private, family cottage, the use of screen printing up to 97% the proportion of small and medium private printing companies printing their products more popular processed to determine the market share, become the main mode of production; flexographic printing industry printing machine has become the trend, more and more domestic enterprises to introduce large-scale flexographic printing presses, die-cutting roller. As the use of self-adhesive label materials and the difference, so the choice of printing process is not the same.Generallabelprintingtomultifunction devices, processing according to customer requirements to develop printing processes. General self-adhesive label printing process can be divided into:
(1) Unwind: can be divided into intermittent (roll up the volume when tension changes, so do not need to adjust. Used in the platen, rotary label machine on the flat, slow unwinding due to such equipment without the paper positioning correction device, requiring web face clean to ensure accurate overlay printing) and continuous (used in the round transformation rotary label machine due to the speed when the roll diameter changes, the paper there are changes in tension, so this device has Automatic or manual tension control agencies, as well as web corrective calibration device to ensure a smooth feeding, to ensure print quality).
(2) tipping: tipping is a die-stick adhesive products to gain market advantage of an essential process. Etching adhesive, self-adhesive plastic film products used in the appropriate forum to be decorative foil, will greatly enhance the value-added goods. However, if the process properly, hot stamping film self-adhesive pages appear as blur, foil attachment is not strong, layout edge hair assassination and other issues, will seriously affect the product's market image. Therefore, the background is not printed too thick ink, process ink should try to make a thin printed deep, deep tone hues that make these inks, the printing ink layer corresponding to the original requirements can be thinner, and help foil strong adhesion, while not as tensile stamping ink off the background ills. In order to foil a clear layout, zinc plate corrosion was due to some deep, so that the blank parts of the layout and stamping a certain amount of height difference, from the eye to avoid. As the hot foil printing pressure appropriate pressure to be bigger than that, in order to avoid deformation caused by pressure on the foil lined bag layout burr generation, including pads (pads) should be used in hard materials, the deformation coefficient, good flatness, to ensure that hot printing results, make batches of consistent product quality. In addition, if the adverse effect of stamping, stamping does not appear on the disturbances, attachment is not strong and other defects, the process operation measures can not overcome the above situation, consider replacing the better the quality grade of hot foil, hot stamping to improve the effect. Stamping can be divided into platen (used in round flattened platen label machine, low speed), rotary (used in rotary label printing machine, the speed, continuous gilt, seldom used, generally process instead of using printed gold gilt) two.
(3) Printing: a platen (for a small area, a simple pattern of printing, such as price tags, bar codes, etc.), round pressure level (with the field for the general pattern of label printing, color can be simple halftone printing), rotary (label printing for all types of pattern, especially for high-end label color halftone printing), UV printing (printing in the above three methods, coupled with UV drying, can be self-adhesive printing film materials).
(4) tipping: a first printed money after hot cutting stick (in the absence of UV drying equipment, using ordinary ink, print graphic design base is limited), and after tipping the first printing (used in a UV dryer device , fast drying ink in the ink on gold foil, gold foil any design pattern, not ink limit, suitable for high-end label printing, is an advanced production process).
(5) Coating: The surface coating layer of varnish ink, intended to protect the ink, moisture, water and increase surface gloss, can replace the laminating process using UV drying.
(6) Laminating: The laminating paper or film materials, the purpose is to protect the ink, water, moisture, increasing a sense of three-dimensional pattern. Laminating and laminating of paper into a bottomless bottom laminating paper, due to the low cost of the latter are commonly used today. According to the requirements of another complex process transparent film and matte film two, the former application of the more common.
(7) punch: application is not widespread, mainly used for computer printing labels. Requirement is driven label both sides of the positioning holes to play, or the application of price gun labels, labeling requirements in the middle hole, and drive used for positioning.
(8) die: self-adhesive label die-cutting process for the half cut through, cut through the surface of the material that is only reserved for the end of the paper. Divided into two processing methods: such as flat-type cutting for all types of label printing machine, manual plate, low cost, short cycle plate, but the low viscosity, suitable for short-run printing process. At present, almost all plant label die-cutting method using flat style. The other is a round-type die, used in rotary labeling equipment, speed, cutting high viscosity, suitable for long-living, big drawback is that plate cost, long cycle. Currently manufacturers are generally die-roll processing abroad.

Label the edges warped reason summary

Label the edges warped causing the main reasons are the following: 1, glue viscosity is too weak: the glue should select the appropriate material; 2, labeling machine roller pressure is not enough: causes and solutions as above; 3, the label side Material: Select the label side of thematerial should be considered when labeling the object is flat or curved surface, a large diameter or small diameter, or a single spherical surface is rigid or compressible deformation, with the surfaces of these indicators are directly related to the choice of . Soft bottle should choose soft materials such as PE, PVC, PP and without stretching the synthesis of PE and PP material. Bottle can be hard considering the selection of PET, BOPP, PS materials; 4, adhesives poor choice: Choose self-adhesive glue, first produced to determine the required adhesive stickers canbepermanent or removed in nature, is a paste or re-posted, as well as on an adhesive label adhesive product of the chemical propertieshavespecialrequirements. For example, in a large curvature of the surface (less than 2cm in diameter, circular substrate, as shown below) labeling, the surfaces should not use heavy or hard material of paper materials (such as mirror-coated paper) should be used in thin film or a soft paper materials and ahighinitial viscosity adhesives; the need for hot-fill containers, self-adhesive materials, surfaces should choose a good film material andtheinitialviscosity adhesives; 5, membrane tension control is not good: The correct coated label from the backing paper off after the formation, not curly, label after label can be followed to maintain good nature; coated tension too tight the label from the backing paper off, the label Anti-Alice, leading prone label after labeling the edge unglued, warped phenomena; 6, bottle shape design irrational: rational design standard should be within the bottle and considerate flat surface (mainly in the flat circular design of the bottle ), but was part of the labeling within the sphericalsurface, using paper labels in labeling when labeling a larger area, after labeling the bottom is easy to both sides of the wrinkle. Our customers all over the country: Beijing, Zhejiang Shanghai, Guangdong and Shandong, Tianjin, Chongqing Fujian, Jiangsu and Shaanxi Hong Kong, Taiwan and Henan Hebei, Shanxi and Yunnan Sichuan, Hunan and Guangxi, Anhui Heilongjiang, Hubei and Jilin Gansu, Jiangxi and Liaoning InnerMongolia,XinjiangTibet,Qinghai, Hainan, Guizhou and Ningxia Macau Luohe Zhoukou Nanyang Xinxiang Kaifeng Shangqiu Luoyang, Sanmenxia Anyang, Jiaozuo Zhumadian Xinyang, a lot of labels, there are many, labels generally require printing, plus other craft made, you can search the Internet about "card Dunlop label" is a card Dunlop Label Printing Co., Ltd. website, the label is mainly used in decoration, information, identification, security, storage, transportation and other fields, businesses, more industry and product applications include: health care products, cosmetics, daily chemical, electronics and home appliances, daily necessities, food and beverage, supermarkets, retail and logistics, industrial-related products, security-related products, environmental protection and related products.

Before the printing process, how to check the quality of self-adhesive materials?

In order to avoid possible self-adhesive material itself by the quality problems caused by failure of self-adhesive label printing, the printing process before, it is necessary for the appearance of self-adhesive materials, carefully check the quality to be able to promptly prior toprinting that may cause defects in the quality of the printing process. 1, check whether there are self-adhesive materials, flash, self-adhesive materials, roll the edges smooth, no damage is to ensure that the basis of self-adhesive label printing quality, so printing must be carefully examinedbefore processing the material reel Cutting Edge is a flash, whether due to improper storage and transportation appeared damaged, and the material volume to reel under the 4-5 loop, double-check its cutting edge. 2, check whether there are cracks on the self-adhesive materials, adhesive materials in the cutting, if the cutting tool to adjust the blade is not sharp or inappropriate, will be in the self-adhesive base materials, tissue paper or paper cracks, crack The fiber will be pulled at the adhesive stick. Cracks that may be continuous, it may be random, self-adhesive materials may appear in the roll side, both sides may, therefore, self-adhesive material on the machine prior to printing, variable paper to carefully inspect the bottom whether there is a small piece of paper and surface cracks. After the check and then take a sample of paper, peel the paper again to check on the bottom end of the paper tissues and whether there are cracks, because cracks sometimes very small, and only separated after the end of paper and tissue paper can be found. It is noteworthy that, due to the printing ink and adhesive will gradually accumulate during the guide roller to press on the edge of self-adhesive materials can also cause cracks. So, even if the printing has started, can not ignore these issues. 3, check whether the edge of self-adhesive materials, adhesive, at the end of the paper is coated with silicone leakage, self-adhesive materials, the bottom edge of adhesion or paper coated with silicone oil leak some areas, in the printing process in the discharge of waste willcausebreakage when the tissues not normal production. So, take before the first printing of about 1 meter long section of self-adhesive materials, peel by hand, to see whether other parts of the edge is not smooth or consistent part of the peel. Typically, tissue paper and bottom paper edges of adhesion occurred in the entire volume of a coating of adhesive material cut volume, and generally occurs only in the outer layer of 7-10 meters, so the face does not cut the roll Adhesive material edge adhesion, do not immediately assert that the entire roll has this wrong. Moreover, we note that the spin-off weight of tissues (such as 60G / m and 80G / m2 paper) than the spin-off weight of the heavy force used tissue paper to alarge,glossy lighter, more compact feel when stripping. Because of this, sometimes the shape required by the customer to choose self-adhesivediecuttingcustomer material, the printing speed can not be done in the conventional. 4, check the reel material cut face is flat, rewinding tension are the same, if the reel material slitting face missing, not only will affect the printing of the register, and due to die position changes and emission problems occur; rewinding elastic inconsistency when printing the paper will lead to changes in force, the tension will also cause uneven print quality.

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