1. Scent selection: The first step is to choose the scent that will be used in the stickers. This can be any type of scent, from natural aromas like flowers and fruits to synthetic fragrances like perfumes and colognes.
2. Encapsulation: The selected scent is then encapsulated in tiny, spherical capsules made of a material such as gelatin or starch. These capsules are designed to be porous, allowing the scent to be released when they are broken open.
3. Adhesive application: A layer of adhesive is applied to the back of a thin, flexible substrate, such as paper or plastic.
4. Microencapsulated scent application: The microencapsulated scent is then applied to the adhesive layer in a controlled manner, ensuring that the capsules are evenly distributed.
5. Protective layer: A protective layer, often made of a transparent film or coating, is applied over the microencapsulated scent to protect it from damage and preserve its potency.
6. Cutting and packaging: The scented substrate is cut into individual sticker shapes and packaged for distribution.
When the sticker is scratched, the microcapsules break open, releasing the encapsulated scent into the air. This allows the user to experience the scent associated with the sticker.
Scratch-and-sniff stickers are commonly used in various applications such as advertising, promotions, educational materials, and children's products. They provide a unique way to engage the sense of smell and create memorable experiences.
