초록 ▼

A disposable blister-type package for containing a small quantity of liquid material such as nail enamel including a volatile solvent, constituted of a thermoformed tray defining a liquid-holding cavity with a surrounding rim and a lid covering the cavity and secured to the rim, wherein at least the

A disposable blister-type package for containing a small quantity of liquid material such as nail enamel including a volatile solvent, constituted of a thermoformed tray defining a liquid-holding cavity with a surrounding rim and a lid covering the cavity and secured to the rim, wherein at least the facing surface portions of the tray and lid are formed of acrylonitrile methylacrylate copolymer. The facing methylacrylate surfaces of the lid and tray are directly bonded together around the cavity to form a leakproof seal that is readily peelable. The seal region of the lid surface is embossed, during the sealing operation, with a pattern of serrations to facilitate peeling. A disposable applicator for the liquid may be enclosed, and similarly sealed, within a second tray cavity also covered by the lid and isolated by the seal from the liquid-holding cavity.

대표청구항 ▼

A package containing a body of liquid material including a volatile solvent, comprising (a) a molded sheet plastic tray defining at least one cavity, for receiving a body of liquid material, and having a substantially planar rim completely surrounding said one cavity; and (b) a lid of sheet material

A package containing a body of liquid material including a volatile solvent, comprising (a) a molded sheet plastic tray defining at least one cavity, for receiving a body of liquid material, and having a substantially planar rim completely surrounding said one cavity; and (b) a lid of sheet material extending entirely over said one cavity and secured to said rim to enclose a body of liquid material received in said one cavity; wherein the improvement comprises: (c) a body of liquid material including a volatile solvent, received in said one cavity; (d) at least facing surface portions of said tray and said lid, including the tray surface portion facing the interior of said one cavity and extending over said rim, being constituted of a polymeric material resistant to attack by said solvent, said polymeric material being acrylonitrile methacrylate; and (e) the lid and tray being secured as aforesaid by direct bonding of said polymeric material of said lid surface portion to that of said tray surface portion around said rim for providing a bond that seals the contained liquid material within the cavity and is substantially uniformly releasable when subjected to manual peeling forces to enable removal of the lid from the tray.