Packaging requirements for printing inks

In general, substrates for different materials require different printing inks. The materials used in the packaging are ever-changing, and there are a variety of printing inks suitable for different packaging. However, some basic features are what each ink must have.

(1) The basic requirements for packaging printing inks.

A. Good liquidity. The ink with good fluidity is easy to transport when used, it is easy to transfer and does not block the print head.

B. The ink must be able to dry quickly after it is printed on the substrate. The adhesiveness is good and it is not easy to rub off. This ensures the printed product is clean and tidy.

C. The color of the printed product must be correct. It does not fade or change color.

(2) Special requirements for packaging for printing inks

A, color diversification

A lot of the purpose of packaging and decoration of goods is for promotion, so the diversification of printing colors and colorful colors are the basic requirements for packaging printing inks. The appropriate printing ink can be used to print beautifully decorated packaging in order to cause consumers to purchase goods. interest.

The packaging and printing products are all beautifully decorated. Most of the pigments used are organic compounds. The pigments are colorful but their durability is generally not ideal. There is a sense of oldness, so when choosing color inks for packaging, special attention should be paid to the use of pigments that are not suitable to fade, in order to ensure a lasting and bright package.

B. Special process requirements

Different processes have different requirements for printing inks. For Indian iron printing inks, if the printed packaging requires high temperature retort sterilization, then there is no need to consider the issue of high temperature resistance of the ink. General common inks can meet the process requirements, otherwise high temperature resistant cooking inks must be used to prevent foodstuffs. During the sterilization process, the ink discoloration and some chemical reactions and physical changes affect the decorating effect of the commodity packaging.

C. Special health requirements

Hygienic requirements for printing inks are also an important aspect. For example, when printing plastic films for food packaging, the permeability of the printing ink should be taken into consideration so as not to cause food contamination.

D. Special drying requirements

Different materials have different ink drying properties. Like ceramics, tinplate, plastic films and other materials, due to the smooth surface smooth, ordinary ink adhesion, you need to use fast-drying inks, such as UV drying ink, pulsed radiation drying ink. There are many factors that affect the use of ink, and it is unrealistic to consider all the factors. Therefore, only the main factors are taken into consideration, and the basic qualified printing inks can be prepared by rationally using pigments, binders, and additives first. .