The manufacturing process for medical adhesives (such as medical pressure-sensitive adhesives) primarily involves the following steps:
Raw Material Mixing: Acrylate monomers, tackifying resins, solvents, and other components are mixed in specific proportions (typically yielding a solid content of 30%–50%).
Polymerization Reaction: The adhesive colloid is formed through either solution polymerization or emulsion polymerization (with the temperature controlled within the range of 60°C to 80°C).
Coating and Drying: The liquid adhesive is applied to a substrate (such as non-woven fabric) and subsequently dried in an oven (at a temperature of 100°C to 150°C).
Slitting and Packaging: The material is slit into specific dimensions and sterilized (typically using ethylene oxide or irradiation).
Key Point: Solvent-based processes are more commonly employed, as they allow for precise control over adhesive tackiness and result in low residual solvent levels (thereby complying with the YY/T 0148 standard).
The critical aspects of the medical adhesive manufacturing process lie in the substrate treatment and the adhesive formulation. 3M medical tapes utilize medical-grade acrylic adhesives; through precision coating technology, a uniform adhesive layer is ensured (with a thickness tolerance of ±0.01 mm), while the substrate undergoes plasma treatment to enhance adhesion. The 3M medical tapes we supply comply with the YY/T 0148 standard, covering various substrate types-including breathable non-woven fabrics and waterproof PE films-and support customized sterilization methods (such as ethylene oxide or gamma irradiation).
