Hottest heat sensing label material

2022-08-04
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Thermal sensing label materials

with the continuous development of variable data printing, major companies are seeking new ways to show their product characteristics and corporate image while trying to optimize the efficiency of the supply chain. More and more companies, from industrial manufacturers, transportation and logistics companies to pharmaceutical industry survey companies, have begun to pay attention to thermal sensing printing technology, because this technology can meet the needs of various industries for variable data printing

compared with the previous industry standard - thermal transfer printing, thermal sensing printing technology has its unique advantages. Both of these two printing methods belong to thermal printing, which uses the thermal print head to generate heat on the material surface to image. The difference is that heat transfer printing melts the ink on the substrate to form graphics and text by heating the carbon tape. After the ink is absorbed, the graphics and text become part of the material. This method can print durable and lasting images on a variety of materials, which is unmatched by other on-demand printing technologies. However, thermal sensing printing does not use carbon tape. It directly images on the printing material. The thermal sensing medium is sensitive to light and heat, and is not resistant to wear, which also limits the service life of the printing material

at present, the main application of thermal printing is to print bar codes, because thermal printing can produce high-quality and accurate images with clear and sharp edges. The experimental method for water vapor transmission performance of building materials gb/t 17146 ⑴ 997 can also ensure the high accuracy of printing and the accuracy of bar width and space of bar codes. Both thermal printing methods can print one-dimensional and two-dimensional barcodes

the difference between thermal sensing and thermal transfer

next, we analyze the difference between the two technologies to help you choose the appropriate technology for specific applications

thermal sensing printing uses heat-sensitive imaging materials that have been chemically treated. When the materials pass through the heated print head, they will become black for imaging, instead of using ink, toner and carbon tape. This simple design makes thermal sensing printing easier to use. In addition, because carbon tape is not used, the cost of thermal sensor printer is lower than that of inkjet printing, laser printing, contact printing and heat transfer printing

for labels that do not require long service life, thermal sensing printing is an economical solution, but the labels printed by it are easy to fade and are not resistant to wear under harsh service conditions. If the label is excessively exposed to heat, light or other catalysts, the material will turn black, making the text and bar code unreadable. For these reasons, thermal sensing printing is not suitable for occasions requiring a long service life. However, this technology can guarantee sufficient service life for most barcode applications, including transportation labels, patient identification, visitor identification, various bills, etc

thermal transfer printing can use a wide range of materials than thermal sensing printing, including paper, polyester, polypropylene, etc., which can be used to make very durable watch straps, cargo labels, visa labels and various bills. In order to ensure printing performance and durability, the label material must match the carbon tape. Choosing the appropriate "material carbon tape" combination, coupled with special adhesives, can make a variety of durable labels that can withstand temperature limits, ultraviolet rays, chemical solvents and sterilization processes. Typical heat transfer applications include product identification labels, circuit board tracking, sampling and document tracking, cargo labels, inventory identification labels, certification labels (such as ul/csa), refrigerated and frozen product labels, outdoor application labels, etc

advantages of thermal sensing printing

thermal sensing printing enables the printed image embedded in a special paper to be displayed through thermal activation. Fast, clean and low-cost, thermal sensing printing can be realized by using existing thermal imaging equipment, and no special operation technology is required

other advantages include:

reliability

shelf life: if the surface coated paper is stored in a dark environment, the relative humidity is controlled at 45% ~ 65%, and the temperature is lower than 25 ℃, the satisfactory performance can be guaranteed for at least 3 years from the date of paper production. Image and text life: once the paper is imaged with the recommended equipment, as long as the material can be kept in a relatively suitable storage and operating environment, that is, the relative humidity is controlled at 45% ~ 65%, the temperature is lower than 25 ℃, and the image and text can be recognizable for at least 7 years

ease of use

there are no strict technical requirements for printing thermal sensing labels. It is only necessary to simply put the label materials into the printer and then print them. It will not involve very cumbersome equipment maintenance, troubleshooting and repair processes

low cost

the cost-effectiveness of thermal sensing printing is very good, which is equivalent to the overall cost of thermal transfer printing

privacy

certain information is often left on the carbon tape used for heat transfer printing. The information printed by thermal sensor is directly displayed on the paper, which can ensure privacy and sensitive information

reduce inventory

thermal sensing printing labels do not need to use carbon tape, ink and toner, but only need to order label printing materials as required. Simplified ordering procedures and product requirements can reduce inventory, labor costs, and inventory space

just because it has so many advantages, it is not surprising that 33% of variable information has been printed by thermal sensing after only a few years

a PI Research Institute predicts that thermal sensing printing will increase at a rate of 3.9% per year, and its total volume will reach 70000 tons by 2008

properties of thermal sensing label materials

thermal sensing label printing paper is coated with a layer of chemical coating on uncoated base paper. This coating is divided into two layers: the bottom layer and the thermal sensing layer. The function of the bottom layer is to prevent the heat generated by the heating head from dispersing into the whole paper, so as to ensure that the paper can print high-resolution pictures and texts under low heat

how to select suitable thermal sensing paper with complex process involved in manufacturing refil regenerated 3D printing wire? The following factors need to be considered:

· the expected life cycle of the label

· environmental conditions to be borne by the label

· paper sensitivity and ideal print quality

type of thermal sensing paper

upm Raflatac provides two levels of thermal sensing paper: eco and top. E c o has no surface thermal coating, so the chemical resistance, water resistance and friction resistance of printed graphics and texts are not very high. However, the cost of tissue material is very low, which can be used for printing retail labels. It is mainly used in occasions where the environment is relatively stable and the label life is required to be relatively short

t OP has a barrier coating on the surface, which means that the printed text is relatively stable and can withstand the influence of various environmental factors. The excellent performance of this kind of label material makes it more suitable for demanding applications. It is the first choice for label materials in delis, hospitals, industrial production and commodity retail. The specific characteristics of the two types of paper are as follows

eco

· no coating, no scratch resistance

· not resistant to oil, water and plasticizer

· the fastest printing speed is 300mm/s

· shorter shelf life under standard environment

· it is recommended to use in a dry environment where the service life of the label is not high

top

· there are barrier coatings on both sides

· excellent oil stain resistance and scratch resistance

· good resistance to oil, water and plasticizers

· printing speed up to 300mm/s

· able to withstand chemical solvents, mechanical pressure and high humidity environment

· it is recommended to use the spring after production in occasions requiring high label durability and environmental tolerance, such as industrial production, commodity retail, deli and other application fields. In addition, with the expansion of application scope and the growth of demand, manufacturers began to turn to thin-film thermal sensing labels. Its characteristics include:

· strength: excellent tear strength

· sensitivity: suitable for printing grayscale and fine images, accurate bar codes and fast imaging

· durability: provide the wet strength required by outdoor labels and documents

· flexibility: it can adapt to special-shaped surfaces and provide the stiffness required for label distribution and labeling

· heat resistance: it can still ensure the dimensional stability when the temperature is higher than the normal temperature. Typical applications are: air baggage tag; Shelf display label; Industrial product labels; Agricultural product label; Labels for horticultural products; Ski product label; Health product labels and medical labels, etc

paper sensitivity

for thermal sensing printing, the sensitivity of thermal sensing paper is very important, because the sensitivity of paper directly affects the printing speed and imaging quality. Thermal sensing paper has two types of sensitivity: static sensitivity and dynamic sensitivity

(1) static sensitivity

is measured by the temperature at which the thermal coating starts to react. Because the heat resistance of the paper is very different, the static sensitivity is also different. The final image of thermal sensing paper with low static sensitivity, that is, paper with high heat resistance, is relatively clear. For thermal sensing paper with high static sensitivity, that is, poor heat resistance, the final printed text is not very clear, because the paper has begun to react at a lower temperature

as one of the main applications of thermal sensing printing is barcode printing, it is very important to select a thermal sensing paper with appropriate sensitivity to ensure the density and clear lines of the barcode. If the bar code is dark or the printing is unstable, it may be unreadable, or it may require manual processing, resulting in higher costs

(2) dynamic sensitivity

is measured by the reaction speed of paper printing. The reaction time or dynamic sensitivity of paper is the most important parameter in printing. For high-speed printers with low heat, the paper should react very quickly. This is because the faster the printing speed, the shorter the time it takes to print each line. As the cooling time is usually not much different, in order to ensure that there is enough time to cool the print head before printing the next line, the heating time must be shorter and the paper will receive less energy. High speed printing paper usually uses a thermal sensing printer with a printing speed of 200m M/s

scanning performance

is mainly cheap. Since most thermal sensing papers are used to print bar codes, of course, the scanning performance of the paper is the most important. What are the main factors that determine the scanning performance of paper? Reflectance! Thermal sensing paper must ensure good reflectance to multi wavelength light. Different scanners read different spectra. Most traditional scanners use visible light (wavelength up to 670nm), but some occasions, such as long-distance scanning and medical scanning, use infrared (910nm). The paper used must match the scanning requirements

in general, the unprinted area of the thermal sensing paper should reflect as much light as possible. The printing area should absorb as many scanning signals as possible

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