Application of offset printing ink in plastic packaging

Introduction

With the widespread application of plastic packaging in various industries, printing quality has become an important factor affecting product aesthetics and brand value. With its excellent performance, offset printing ink can achieve high-quality pattern and text printing on plastic packaging. This article will explore the specific application of offset printing ink in plastic packaging, its technical advantages and its role in enhancing brand value.

Formula design of offset printing ink

Resin: Resin is the main component of offset printing ink, which determines the adhesion and wear resistance of ink. Commonly used resins include acrylic resin, polyurethane resin and epoxy resin.

Pigment: Pigment determines the color and hiding power of ink. High-quality pigments can provide bright colors and good light resistance.

Solvent: Solvent is used to adjust the fluidity and drying speed of ink. Environmentally friendly solvents such as water and vegetable oil-based solvents can reduce pollution to the environment.

Additives: Additives include adhesion enhancers, leveling agents, defoamers, etc., which can improve the performance of ink. For example, adhesion enhancers can improve the adhesion of ink on plastic surfaces, and leveling agents can improve the fluidity and coating uniformity of ink.

Specific applications of offset printing inks in plastic packaging

Food packaging

Applications: food plastic bags, plastic bottles, plastic boxes, etc.

Features: Food packaging needs to ensure the safety and adhesion of inks. Offset printing inks can provide high-quality printing effects while meeting food contact standards to ensure food safety.

Daily chemical packaging

Applications: shampoo bottles, shower gel bottles, cosmetic bottles, etc.

Features: Daily chemical packaging usually requires high-quality pattern printing on smooth plastic surfaces. Offset printing inks can enhance the beauty and brand image of products through high adhesion and bright colors.

Industrial product packaging

Applications: lubricating oil barrels, chemical product bottles, etc.

Features: Industrial product packaging needs to have good weather resistance and chemical resistance. Offset printing inks ensure that the printed pattern on industrial product packaging lasts and does not fall off by selecting ingredients with high adhesion and chemical resistance.

Pharmaceutical packaging

Applications: medicine bottles, medicine boxes, medical device packaging, etc.

Features: Pharmaceutical packaging has high requirements for the safety and adhesion of inks. Offset printing inks ensure the firm adhesion of printed patterns on pharmaceutical packaging by selecting environmentally friendly ingredients that meet pharmaceutical standards, thereby improving the safety and reliability of products.

Technical advantages

High-quality printing: Offset printing inks can achieve high-resolution pattern and text printing with bright colors, which improves the aesthetics and brand value of packaging.

Diversified applications: Applicable to a variety of plastic materials, including PE, PP, PET, etc., with a wide range of applications.

Environmental performance: The application of environmentally friendly inks reduces pollution to the environment and meets the requirements of green printing. It is particularly suitable for packaging printing with high safety requirements such as food and medicine.

High adhesion: Through formula design and surface treatment technology, offset printing inks can achieve firm adhesion on plastic surfaces, ensuring that the printed patterns last and do not fall off.