Rolo de folha PET para impressão

Brif Introdução

PET (polyethylene terephthalate) plastic sheets are widely used in packaging, electronics, medical and other fields due to their excellent transparency, toughness, chemical resistance and other characteristics. The printability of PET sheets gives it unique advantages in packaging printing, logo production and other aspects.

Advantages of PET sheet printability

• High transparency: The high transparency of PET sheets makes the printed pattern clearly visible and colorful.
• Good mechanical properties: PET sheets have high strength and toughness, can withstand mechanical pressure during printing, and are not easy to deform.
• Chemical resistance: PET sheets are resistant to acid, alkali and other chemical substances, are not easy to fade, and ensure the durability of printed patterns.
• Good barrier properties: PET sheets have good barrier properties such as oxygen and water vapor, which can protect the printed pattern from the external environment.
• Recyclability: PET sheets are a recyclable and environmentally friendly material that conforms to the concept of sustainable development.

Specifications of PET sheet

PET sheet roll we offer

Application of PET sheet printability

Food packaging: PET sheets can be printed with various patterns and texts for food packaging to increase the attractiveness of products.

Electronic product packaging: PET sheets can be used for the outer packaging of electronic products, printing product information and brand logos.

Logo production: PET sheets can be used to make various logo plates, signs, etc., with the characteristics of wear resistance and weather resistance.

Decorative materials: PET sheets can be used to make decorative materials, such as wallpaper, curtains, etc.

PET sheet production process

The production process of PET sheets mainly includes the following steps:

Polymerization: Polymerize terephthalic acid and ethylene glycol under high temperature and high pressure to generate PET resin.

Melting: Heat the PET resin to a molten state.

Extrusion: Extrude the molten PET resin into sheets through a mold.

Cooling and shaping: Cool and shape the extruded PET sheet.

Post-processing: Surface treatment, slitting and other post-processing of the PET sheet.

How to make PET sheets printable

In order to make PET sheets have good printing performance, surface treatment is usually required. Common surface treatment methods are:

• Corona treatment: Ionize the air through a high-frequency and high-voltage electric field to generate plasma, bombard the surface of the PET sheet, increase the surface energy, and improve the adhesion of the printing ink.
• Flame treatment: Use flame to heat the surface of PET sheet to produce an oxide layer on the surface and increase the surface energy.
• Plasma treatment: Use plasma to modify the surface of PET sheet and increase the surface energy.
• Primer coating: Apply a primer on the surface of PET sheet to improve printing performance.

Factors affecting the printability of PET sheet

Types of PET sheets: Different types of PET sheets have different properties such as crystallinity and molecular weight, and have different effects on printing performance.

Surface treatment process: Different surface treatment processes have a greater impact on the printing performance of PET sheets.

Printing ink: The type, viscosity, solid content, etc. of printing ink have a direct impact on the printing effect.

Printing equipment: The accuracy and stability of printing equipment have an impact on printing quality.

Through reasonable surface treatment and selection of appropriate printing process, the printability of PET sheet can be significantly improved, so that it can be more widely used in packaging printing, logo production and other fields.

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