The release performance of Gracin release paper and its application in label production

Glassine paper is an indispensable release material in the label manufacturing industry. As the backing for self-adhesive labels, it serves multiple functions including supporting the face material, protecting the adhesive, and facilitating peeling. Its performance directly affects label production efficiency and end-user experience.

Glassine paper uses wood pulp as raw material, forming a dense, smooth surface through supercalendering. Weight typically ranges from 60-80g/m², with thickness uniformity controlled within ±5% tolerance. Through silicone coating treatment, release force can be adjusted to 100-400g/25mm, accommodating peeling requirements for different adhesive types.

Light release (100-200g) suits high-tack adhesives such as permanent labels; medium release (200-300g) is suitable for most general-purpose labels; heavy release (300-400g) pairs with low-tack removable labels. Double-sided release paper can be used for sandwich label structures, enabling flexible multi-layer label applications.

High-speed labeling machines demand high flatness and tensile strength from glassine paper, typically requiring longitudinal tensile strength ≥5kN/m. Paper should be splice-free, wrinkle-free, with uniform silicone coating and no missed areas. Store flat or vertically, avoiding moisture-induced deformation that affects subsequent processing and use.