The backing paper is an essential part of self-adhesive labels, providing support for the adhesive and playing a key role in labeling, storage, and application. The selection of backing paper directly affects the performance of the label, such as peel strength, transparency, printing quality, etc.
1. Classification #
Backing paper can be mainly classified according to material, coating, and thickness.
1.1 Material #
- Wood Pulp Backing Paper: Backing paper made from wood pulp, including recycled paper and virgin wood paper. This type of backing paper has the advantages of low cost and easy processing, but it is not suitable for use in high humidity and temperature environments.
- Glassine Paper Backing Paper: Backing paper made from crushed glassine paper, which has good smoothness and excellent printability, suitable for high-quality label production.
- Plastic Film Backing Paper: Backing paper made from various plastic materials, which has water resistance, humidity resistance, and high tensile strength, suitable for label production in extreme environments.
1.2 Coating #
- Uncoated Backing Paper: This type of backing paper has not undergone any coating treatment and can be printed directly.
- Single-sided Coated Backing Paper: One-sided coated backing paper, usually the coated side is the one used for bonding the adhesive.
- Double-sided Coated Backing Paper: Backing paper that has been coated on both sides, the advantage is that it can provide better protection and stability.
1.3 Thickness #
- Thin Backing Paper: Thin backing paper is generally suitable for small and precise label production, such as mobile phone or electronic product labels.
- Thick Backing Paper: Thick backing paper is suitable for large or heavy-duty labels, such as freight or industrial labels.
2. Factors to Consider When Choosing #
When choosing backing paper, the following factors usually need to be considered:
- Environmental Adaptability: Includes the need for environmental conditions such as waterproof, high temperature resistance, low temperature resistance, etc.
- Label Size and Shape: The requirement for backing paper strength and flexibility.
- Printing Requirements: The requirement for printing effect, color, and clarity of the backing paper.
- Cost: Consideration of the cost of the backing paper material and manufacturing.
In practical applications, the most suitable type of backing paper is selected based on specific label requirements and conditions. Some professional self-adhesive label manufacturers may offer custom backing paper services to meet the needs of specific applications.
3. Development Trend #
With the increase in environmental protection requirements, the application of biodegradable backing paper, recyclable backing paper, and other environmentally friendly backing paper is gradually increasing. At the same time, to meet the needs of complex environments and special applications, various new types of backing paper are constantly being developed and applied, such as high-strength backing paper, ultra-thin backing paper, multi-layer backing paper, etc.
