In screen printing industry water based and Plastisol are the ink types that mostly used. But there are huge differences between two kinds of ink.
Water based ink
This ink is made for super soft fabrics. Water based ink dyes the garment directly and remove the color of the fabric and replace it with the color of the image. Water based prints are bright. This ink is easy to use but need a good training to use. Advantages of using water based ink are they are better for the environment, Ink becomes the part of the garment and water based ink is good for creating a vintage look. Disadvantages of water based ink are more expensive, takes more time to finish and dry and also another disadvantage is it is influenced by the color of the garment.
This is a plastic based ink and made for thick prints. It is cheaper than the water based ink. This ink lays directly on the print and covers the layer of the fabric. Plastisol ink prints are also bright. This ink is highly easy to use. Advantages of Plastisol ink are it has a great opacity, will not clog screens because it won't dry until cured. Disadvantages are thicker hand and less breathable.
So these are the differences between water based ink and plastisol ink. So you would be better to take the advices from screen printing ink suppliers NY before you buy ink.
What To Think Before Buy A Used Printing Machine.
If you are low in budget you always try to buy a second hand printing machine to your press. But before buy a second hand printing machine you should think about so many things. Here you will know few factors about it.
You can easily find used printing equipment buyers from the area you live. After that you should make sure about the manufacturer of the printing machine. The manufacturer should be a well known company in the field. The company should have ISO qualified. First do some search on the internet and you can get a brief idea about the brand and the features.
You should know about the amount that you are going to pay for the machine. If you want to print your prints with high quality then the machine also will cost little bit high.
If you need a high quality print you would better to buy a second hand offset printing machines because they can give you a high quality prints
You should concern about the capability of the machine. You can buy low, medium and high capacity printing machines in the market.
So now you know what to do before you buy a second hand printing machine. First make a visit to the used printing equipment buyers and have a discussion with them. Then they will help you to select a good printing machine which is suitable for your needs.
Source : http://screenprintingink.page.tl/Water-Based-Ink-And-Plastisol-Screen-Printing-Ink-Suppliers-NY.htm