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US 6,802,422 B2Granted
Sealed blister assembly
AssigneeMulti-Comp, Inc.
InventorsJohn D Kalvelage, Ian E. Salditch, Galen Nickey, Jr., Toomas Ots
Life of this patent
Estimating the term…
Abstract
A sealed blister assembly is made up of a plastic sheet and a plastic lid. The plastic sheet and plastic lid are joined together to form a impermeable seal. The seal is formed by engagement of an undercut in the plastic sheet and a shoulder in the plastic lid. A plastic sheet and/or plastic lid are made from a polymer such as low density polyethylene to obtain the impermeable seal.
Claims15
A sealed blister assembly comprising:
- a plastic sheet having a recess formed therein, the recess having a perimeter all around an opening into the recess, and the perimeter further comprising an undercut;
- a plastic lid adapted to attach to the perimeter of the recess and cover the opening into the recess, the plastic lid comprising a raised ridge having an outside edge adapted to engage the undercut of the plastic sheet around the entire perimeter,
- wherein the engagement of the ridge and undercut forms a impermeable seal, whereby a sealed blister is formed from the plastic lid and the recess of the plastic sheet, and further wherein the sealed blister does not exceed a moisture permeability rate of 5 mg/day.
A package assembly for dispensing a pharmaceutical medication comprising:
- a plastic sheet having a medication receiving recess formed therein and with a substantially planar shoulder portion disposed along the peripheral portion of the sheet and further with a perimeter around the recess;
- a pharmaceutical medication positioned in said recess of said plastic sheet;
- a plastic lid positioned in an overlying relationship to the plastic sheet, the plastic lid comprising a raised ridge having an outside edge corresponding to the perimeter of the recess and frictionally engaging the perimeter to thereby close the recess and impermeably seal the medication therein, wherein the sealed recess does not exceed a moisture permeability rate of 5 mg/day.
Dependencies are inferred from the claim text.