초록 ▼

A method is provided for forming in situ a seal for dispensing containers and the like of the type having a body with a reservoir, a dispenser with an applicator surface, and a cap detachably connected with the body, and selectively covering the dispenser applicator surface. The in situ method compr

A method is provided for forming in situ a seal for dispensing containers and the like of the type having a body with a reservoir, a dispenser with an applicator surface, and a cap detachably connected with the body, and selectively covering the dispenser applicator surface. The in situ method comprises providing a mandrel shaped geometrically similar to either the cap or the dispenser. The selected one of the cap and the dispenser is then assembled on the mandrel to form a closed cavity therebetween into which is injected a foamable liquid of the kind which expands when cured into a substantially closed cell construction. The liquid foam is cured in the cavity to the extent that the liquid foam expands to completely fill the cavity, and solidifies to create a seal formed in situ on the one of the cap and the dispenser. In use, the cured foam seal is disposed between the applicator surface of the dispenser and the cap, and prevents the product from inadvertently leaking from the reservoir.

대표청구항 ▼

A method for forming a seal for dispensing containers and the like of the type having a body with a reservoir adapted to retain therein a product to be dispensed, a dispenser with an applicator surface adapted to dispense the product from the reservoir, and a cap detachably connected with the body,

A method for forming a seal for dispensing containers and the like of the type having a body with a reservoir adapted to retain therein a product to be dispensed, a dispenser with an applicator surface adapted to dispense the product from the reservoir, and a cap detachably connected with the body, and selectively covering the applicator surface of the dispenser, said method comprising: providing the cap; providing a mandrel shaped geometrically similar to the dispenser; assembling the cap on the mandrel, thereby forming a substantially closed cavity therebetween; providing liquid foam of the type which expands when cured into a substantially closed cell construction; after said assembling step, injecting the liquid foam into the cavity; after said injecting step, curing the liquid foam in the cavity to the extent that the liquid foam expands to completely fill the cavity, and solidifies to create a foam seal formed in situ on the cap, which is adapted for positioning between the applicator surface of the dispenser and the cap to prevent the product from inadvertently leaking from the reservoir.