Patent ID: 8920590

Claim:
A method of fabricating a seal of the type providing a one-time removable protective cover for a medical container of the type having an opening with a membrane, said method comprising: fabricating the seal for sealing around the opening of the container, including using machine equipment for forming an adhesive area encircling an adhesive free target area of the seal, and using machine equipment for attaching a removable peel strip to the adhesive to protect the adhesive free target area from contamination; using an adhesive that does not change color upon removing said peel strip; forming the seal so that the adhesive free target area is visually distinguished by color from the surrounding adhesive area by a person when manually applying the seal to the container for a first time and only a single time; spoiling the target area to reduce reflectivity thereof; forming the adhesive area of said seal with a desired color by adding a color agent to the adhesive to achieve the desired color; forming the seal so that it is destroyed on removal thereof from the container and cannot be resealed to the container; and whereby when the peel strip is removed the adhesive free target area is easily visually distinguished from the surrounding colored adhesive and the adhesive free target area of the seal can be visually aligned by a person with the membrane of the container opening and manually applied by the person thereover without placing the adhesive on the membrane, and the adhesive portion of the seal surrounding the adhesive free area can be attached to the container, and at least a portion of the seal can be removed from the container to access contents via the container membrane.