초록 ▼

The present invention relates to a self-sealing flexible plastic valve for a non-latex balloon. The valve is made from two flexible plastic sheets, bonded together to define a valve inlet, a valve outlet and a valve passageway. The inlet end of one sheet extends beyond the other to provide a positio

The present invention relates to a self-sealing flexible plastic valve for a non-latex balloon. The valve is made from two flexible plastic sheets, bonded together to define a valve inlet, a valve outlet and a valve passageway. The inlet end of one sheet extends beyond the other to provide a positioning tab to be bonded to the balloon sheet such that the valve inlet is within the balloon stem. A bonding barrier at the inlet end avoids sealing during fabrication and facilitates automated insertion of the valve into the balloon.

대표청구항 ▼

A self-sealing, non-latex balloon having a body and a stem comprising, in combination: a first balloon sheet having an interior surface; a second balloon sheet bonded to said first balloon sheet so as to define said body and said stem; and a self-sealing valve having a first floating portion within

A self-sealing, non-latex balloon having a body and a stem comprising, in combination: a first balloon sheet having an interior surface; a second balloon sheet bonded to said first balloon sheet so as to define said body and said stem; and a self-sealing valve having a first floating portion within said body and a second portion heat-fused to said first and second balloon sheets within said stem, said self-sealing valve including a first flexible plastic valve sheet, having a thickness in the range of one (1.0) to two (2.0) mil, bonded to a second flexible plastic valve sheet, having a thickness in the range of one (1.0) to two (2.0) mils, so as to provide a positioning tab and a valve inlet defining said second portion, said positioning tab being initially bonded to said interior surface of said first balloon sheet at a predetermined position and a predetermined orientation with respect thereto; said valve inlet being bonded to said first and second balloon sheets within said stem; said self-sealing valve further including a bonding barrier of heat-resistant ink applied to at least one of said first and second flexible plastic valve sheets at said valve inlet; said self-sealing valve further defining a valve passageway having an inlet section, an outlet section and an offset section, such that said inlet section has a width greater than said outlet section.