For cultural reasons, enumerating the precise number of females has been difficult--and estimates of the percentage of females in the population range from 47.5 percent in the 1981 census to 48.3 percent in the 1987-88 Labour Force Survey.
Substrate (printing) Substrate is a term used in a converting process such as printing or coating to generally describe the base material onto which, e.g. images, will be printed. Base materials may include: plastic films or foils, release liner.
Step 1. Choose the type of printing you would like to use. When it comes to printing t-shirts, there are three main processes: screen printing, heat transfer and digital printing. Each of these types of t-shirt printing requires a different type of machine. Generally, a digital t-shirt printer is the most expensive type of machine, because it is the easiest to use. Heat transfer imprints generally do not last as long as digital or screen prints but are usually faster. Screen printing is usually best for mass production.