Adhesive plaster, commonly known as medical adhesive tape or surgical tape, is a flexible and adhesive material used for securing wound dressings, bandages, or medical devices to the skin. The composition of adhesive plaster can vary depending on its intended use, but the main raw materials typically include:

1. Backing Material:
   • The backing material serves as the base or carrier of the adhesive plaster, providing strength, durability, and flexibility. Common materials used for backing include:
     • Non-woven fabric: Soft, porous, and breathable fabric that conforms well to body contours.
     • Plastic film: Thin, transparent, and water-resistant film that provides a barrier against moisture and contaminants.
     • Paper: Lightweight and economical material often used for disposable adhesive tapes.
2. Adhesive:
   • The adhesive is the key component of adhesive plaster, responsible for adhering the tape to the skin or other surfaces. Adhesives used in medical tapes are typically hypoallergenic, gentle on the skin, and designed for secure yet gentle adhesion. Common adhesive types include:
     • Acrylic adhesive: Offers good initial tack, long-term adhesion, and moisture resistance.
     • Synthetic rubber adhesive: Provides excellent adhesion to skin and medical devices, with minimal residue upon removal.
     • Silicone adhesive: Gentle and non-irritating adhesive suitable for sensitive skin, with easy removal and repositioning.
3. Release Liner:
   • Some adhesive plasters may feature a release liner or backing paper that covers the adhesive side of the tape until it is ready for use. The release liner protects the adhesive from contamination and ensures easy handling and application. It is typically removed before applying the tape to the skin.
4. Reinforcement Material (Optional):
   • In some cases, adhesive plaster may include a reinforcement material to provide additional strength, support, or stability. Reinforcement materials may include:
     • Mesh fabric: Provides added strength and durability, particularly in high-stress applications or areas requiring extra support.
     • Foam backing: Offers cushioning and padding, reducing pressure and friction on the skin, and enhancing wearer comfort.
5. Antimicrobial Agents (Optional):
   • Certain adhesive plasters may incorporate antimicrobial agents or coatings to help prevent infection and promote wound healing. Antimicrobial properties may be imparted through the inclusion of silver ions, iodine, or other antimicrobial compounds.
6. Coloring Agents and Additives:
   • Coloring agents, stabilizers, and other additives may be incorporated into the adhesive plaster formulation to achieve desired properties such as color, opacity, flexibility, or UV resistance. These additives help optimize the performance and appearance of the tape.

the main raw materials of adhesive plaster include backing materials, adhesives, release liners, reinforcement materials (if applicable), antimicrobial agents (if desired), and various additives to achieve the desired properties and performance characteristics. Manufacturers carefully select and formulate these materials to ensure the adhesive plaster meets quality standards, regulatory requirements, and user needs in medical and healthcare applications.