Use of non-adhesive stretch-film as a laboratory container closure
AssigneeBrandeis University
InventorDaniel Perlman
Life of this patent
Estimating the term…
Abstract
A method for covering and sealing an opening in a container. The method employs a polyolefin-based stretch film which is free of adhesive and has a softening temperature in excess of 100.degree. C. At least one surface of the film having an upper and lower surface is substantially free of constituents which can dissolve in, or react with an organic solvent or a caustic agent. The method includes the steps of: (i) providing a portion of the film which covers the container opening, (ii) stretching the film using a mechanical force in a direction generally parallel to the principal axis of the container opening, and (iii) releasing the force and allowing the film to contract around the container opening to provide a liquid-tight seal over the opening.
Claims12
A method for covering and sealing an opening in a laboratory container, said opening defined by an upper perimeter wall, said method employing a sized portion of a polyolefin-based stretch film free of adhesive, said film having an upper and lower surface and a softening temperature in excess of 100.degree. C., wherein at least one surface of said film is substantially free of constituents which can dissolve in, or react with a organic solvent or a caustic agent, said method comprising the steps of:
- providing a portion of said film sufficient in size to cover said opening and overhang said perimeter wall,
- stretching and deforming at least one region of said film surrounding said upper perimeter wall using a mechanical force in a direction generally parallel to the principal axis of said opening,
- releasing said force and allowing at least some of said region of said film to contract to form a snug and essentially unpleated collar around said perimeter wall, thereby providing a liquid-tight seal over said container opening.
Dependencies are inferred from the claim text.