The most popular choice of suitable white ink for

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Selecting appropriate white ink for silk printing machine for most of the garment silk printing participants who held the national summary and exchange meeting on the utilization of controllable biodegradable film in farmland held by the Beijing Ministry of agriculture, it has become their habit to choose white ink. We usually have a prior idea of the ink we like. Large garment printing factories can use any kind of hot-melt ink on their automatic printing machines. Only the manual production printing machine in small printing plants and the manual proofing printing machine in large printing plants need to choose clothing hot-melt ink. In this kind of printing press, the performance of ink is the easiest to evaluate. Although you can now use any kind of ink, the human factors in the silk printing process can magnify the characteristics of the ink

white ink

white hot melt ink plays the most important role in the day's work of manual printer operators. More than half of the printed clothing patterns need white ink. The biggest challenge facing printers is to choose the best ink according to printing needs. Almost every hot melt ink manufacturer has hundreds of white ink formulations, and they are selling a dozen or more inks every moment. Even though some white hot melt inks have special uses, their composition is still very vague

you must have a general understanding of the existing products. There are four kinds of white inks for manual printing machines that can meet different needs. They include a basic cotton white, a white for 50/50 cotton/polyethylene T-shirts, a nylon white, and a polyester white for 100% polyethylene fiber

Cotton White:

the white hot melt ink used for cotton materials is the easiest to use. Cotton fiber limits the performance of ink less than other materials. The most attractive features of this material are: simple printability, good opacity and good reflectivity. There are many versions of this hot-melt ink on the market. The best method is to try as many as possible to find the one that is most suitable for you. The performance of all these products should be similar

anti absorption white:

anti absorption white hot melt ink has brought great challenges to both manufacturers and end users. This is the most widely used white ink in the market, and the competition in the market is also fierce. Hot melt ink manufacturers will introduce a new anti absorption white ink about every 12 to 18 months. These manufacturers have been working hard to improve the formula of white products, hoping to win more shares in the clothing screen printing market

the challenge of using anti absorption hot melt inks comes from the performance requirements of these products. These requirements include: superior printability, fast drying, high gloss, good opacity, soft feel, strong durability, good smoothness and post flash. Each feature requires a different formulation from the manufacturer, so you will find a variety of anti absorbent white inks on the market. You must try different kinds of inks produced by different manufacturers to find the one that suits you best. Most of the anti absorbent white inks in this area have their own areas of expertise; It is impossible for us to put all the above-mentioned features into one product

from the perspective of the printer operator, I give the following priority parameters:

1 Printability

2 Opacity

3 Anti absorption

4 Good post flash

5 Feel

6 Gloss

7 Good aging

the top three factors in this list are the first issues I emphasize in the book. Moreover, if you want to know, aging refers to that the ink maintains good printability for a long time, but the viscosity growth rate is not very fast. Although this may sound trivial, you don't want to face a half gallon (or a half barrel size used by large printing houses) of products, which are too thick for printing. In this regard, the performance of some white inks is better than others, so you have to try these different products yourself

nylon white:

nylon white is another different color because they have special performance parameters. Nylon ink was first used in printing houses that serve the sports uniform market. The fibers here include nylon micro and high tensile fibers, such as Lycra. The structure and composition of these materials may change with the use of the manufacturer, so you must test your ink on these products and conduct a comprehensive study on these materials. The performance of these inks will vary greatly according to the manufacturer and the purpose of use. The characteristic parameters of a good nylon hot melt ink that you need to pay attention to are: opacity, printability and durability

polyester white:

polyester white can pose the greatest challenge to all inks. This is especially true for people who use manual printing machines. When it is printed on the polyester fiber which is the most troublesome through the special manufacturing process, the polyester white can also show the maximum anti absorption performance. Not all these inks are easy to print. The performance parameters of these inks depend on the compatibility of fibers, not the simplicity of printing. The printing performance of polyester white produced by different manufacturers can be divided into manual grinding and mechanical grinding. Therefore, you need to try different brands of products to make the final choice.

when you want to use polyester white ink, the key is to listen to the opinions of other printers and find the most practical products. It is also very important to contact new inks on the market and take samples of them

for manual printer operators, the most important thing is to have an easy-to-use product, which means that no special treatment or major modification of the printing program is required. But that is where the problem arises. You must have a deep understanding and experience of the variability of inks, fibers and printing presses. You must also carry out your own bleeding test to test whether this product is really anti absorbent on the fiber you print

unfortunately, not all fibers can be used for silk printing. To print, consult the fiber manufacturer. I have consulted manufacturers about their tough fibers, and they told me never to print on these fibers. This is the last thing your customers want to hear, but it's best to let them know before doing it. If you encounter such fibers, it is best to give up or help customers find alternatives. Do not take risks in printing, regardless of fiber bleeding

please choose carefully

the white hot-melt ink you use on manual equipment will have a certain impact on the productivity and benefits of the company. It seems to be a very difficult task to carefully examine the white inks of different manufacturers, but the time you spend in selecting the inks will be compensated by the higher printing quality and fewer printing problems

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