Create new business opportunities with thermal transfer paper
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In recent years, many commercial printers have been busy producing large and small jobs on all types of paper to meet the needs of companies to promote their products and services. But now, as advertisers gradually shift their focus to the Internet, the rise of digital short-run printing, and the increase in public environmental awareness, the consumption of paper has dropped significantly, which has brought certain difficulties to the survival of commercial printing companies. .
Today, business-minded printing companies are looking for opportunities to print on non-traditional substrates. With the launch of a new generation of thermal transfer paper, printing companies also have the conditions to print complex images on textiles. They can produce a variety of soft logos, flags and compassionate products according to customer requirements. In other words, printing companies can use existing equipment, materials and finishing equipment to meet their production requirements and help them grow their business.
Introduction to thermal transfer paper
High-quality thermal transfer papers appeared in the mid-1990s, and the first thermal laser products appeared after the birth of inkjet products, the mid-eighties of the last century. In addition, the world's first dark transfer paper was developed in the mid-1990s, and hollowed out thermal transfer paper was introduced in 2005.
Today, thermal transfer paper has been used in every corner of life. Many of today's thermal transfer papers have better environmental and safety advantages than other products, so printing companies also hope to use some thermal transfer papers that do not contain the following harmful substances to achieve higher environmental standards, such as:
PVC (polyvinyl chloride)
PFOS (perfluorooctane sulfonate)
Bisphenol A (bisphenol A)
Organotin
Phthalates
Formaldehyde
market expectation
The offset printing process with thermal transfer paper provides users with a faster, lower cost and more efficient way to print T-shirts, canvas bags, notebooks and other textiles. Printing companies can increase their revenue by selling patterned T-shirts or other products, or provide customers with printed patterns that can be used with irons. In addition to line patterns, they can also print photos and photo quality images.
When choosing a thermal transfer paper for the offset process, the most important thing is to choose a different paper for light and dark textiles. Thermal transfer paper designed for dark textiles prevents fading of the substrate or image. If the user does not know which color gamut will be used in which color transfer paper, the best solution can be found through experimentation. In general, all thermal transfer papers designed for dark substrates should have the following characteristics:
Avoid migration of offset inks
Prevent the wetting of wet ink
Has good color fidelity, no cracking, and can withstand multiple rinses and drying
Can be used with a stamping machine or iron
Production tips
Although today's thermal transfer papers are already easy to print, it is best for users to test all the programs in advance to ensure the desired results. Offset printing plants should consider the following:
Prepress: The image must be continuously adjusted during the prepress process to compensate for the small gain (5-15%) that the tonal value may appear. In addition, accurate background removal should be based on image characteristics and the total print density should be controlled to within 280%. Keep in mind that many prepress proofs have been compensated for coated paper (coated paper).
Ink/ink drying: Ink with a higher viscosity gives the user a more solid dot, so it is best to use a solvent with a lower solvent content and a higher solids content. The dryness of these inks is about 5 to 7 density points.
Disposal: Try to open the thermal transfer paper packaging before printing, and adjust the temperature and relative temperature of the printing workshop between 68?F and 45-60%, preferably with a small number of printing methods.
On-machine printing: Today's thermal transfer papers have undergone special surface treatments to facilitate uniform coverage and curing of the ink. Although most offset inks work well on this type of paper, it is best to test them before printing on the machine.
Trimming and die cutting: A sharp edge facilitates smooth cutting of the paper, and if the edge is blunt, it may tear the paper.
Be sure to print on the coated side of the thermal transfer paper. If there is no visible mark, you can cut a corner of the paper to determine which side is coated.
Some transfer papers are used very well on almost all textiles and blends, but problems can arise with nylon or polyester materials. To avoid mixing the fiber dyes with the transfer paper, it is best to control the temperature. Below 300?F.
In actual production, we can first remove the liner of the transfer paper, then place the printed film on the garment and transfer the image with a hot stamping machine.
If you use a hot stamping machine for production, you can imprint the image on the ideal garment or substrate and remove the transfer paper after it has cooled down completely. When faced with thicker textiles such as canvas, we can increase the temperature, pressure and time of the embossing appropriately.
If you use an iron for production, you must master the time of imprinting. For an 8.5 x 11 inch transfer zone, the ideal time for embossing is 3 minutes, and so on, the smaller the area of the transfer zone, the shorter the time required. A 3x3 inch transfer area takes only about 15 seconds to heat up.
Consulting paper supplier
Paper suppliers can choose the right thermal transfer paper for you according to your needs. You can ask the supplier the following questions:
What adjustments do we need to make in the prepress?
How to manage the original and how to adjust the tone value?
Do we need background removal?
What is the optimum viscosity of the ink?
How should the paper be handled and stored?
How to choose a paper lifting device?
How long is the drying time?
What are the issues that need attention during the trimming and die cutting process?
to sum up
When printing non-paper substrates such as textiles, commercial printers are fully equipped to compete with desktop printer users and screen printers. They are not only good at color control and print management, but also bring users more than Imagined the details and image quality. In addition, commercial printers have higher production capacity, and as long as they pay attention to the production details mentioned above, they will be able to win more business opportunities with thermal transfer paper.