A paper liner is a specialized backing material, typically made from Glassine or Kraft paper, engineered to possess significant tensile strength. This strength is crucial to prevent the liner from breaking during the rigorous processes of label manufacturing and application.
Understanding Paper Liners
In the context of adhesive products, particularly self-adhesive labels, a paper liner serves as the protective carrier that holds the adhesive material until it's ready for application. It acts as a release layer, allowing the label to be peeled away cleanly.
According to the provided information, paper liners are generally Glassine or Kraft based papers. These specific paper types are chosen as foundational materials due to their suitability for further processing to achieve desired characteristics.
Key Characteristics and Functionality
The critical attribute of a paper liner is its tensile strength. This refers to its ability to withstand pulling forces without tearing or snapping. The manufacturing process of these liners is specifically geared towards enhancing this property:
- Engineered for Durability: Paper liners are "processed in a way to provide good tensile strength." This means they undergo specialized treatments to ensure they are robust and resistant to strain.
- Preventing Breakage Under Stress: The primary benefit of this enhanced strength is to "ensure they do not snap when they are put under strain." This is vital during high-speed industrial operations such as:
- Label Conversion: The process where raw adhesive material on a liner is converted into finished labels, involving steps like die-cutting and matrix removal.
- Label Application: When the finished labels, still on the liner, are fed through automated machinery (a label applicator) for rapid dispensing onto products or packaging.
This robust construction ensures a smooth, efficient workflow, minimizing disruptions and material waste in label production and usage.
