Dispensing package

Abstract

A dispensing package (10) for cosmetic creams is disclosed. The dispensing package includes a container body (16) having a first end (18) and a second end (30). The container body includes a first inner perimeter (58) adjacent the first end (18) and a second inner perimeter (62) adjacent the second end (30), wherein the first perimeter is larger than the second perimeter. The dispensing package also includes an elevator (14) positioned within the container body for movement between the second end of the container body and the first end of the container body to force material held within the container body out the first end of the container body. The elevator (14) includes an outer surface facing an inner wall (24) of the container body and a sealing bead (54) formed on the outer surface of the elevator. The sealing bead (54) engages the inner wall of the container body adjacent the second end of the container body to form a seal permitting filling of the dispensing package and containment of product volatiles during storage and distribution. The sealing bead disengages from the inner wall of the container body where the second inner perimeter transitions to the first inner perimeter to provide pressure relief from the seal and a free-floating elevator as the elevator moves from the second end of the container body toward the first end of the container body.

Description

technical field [0001] The present invention relates to a rotary ascending dispensing device, and more particularly to a rotary ascending dispensing device exhibiting a pressure relief metering and dispensing system and a free floating elevator suitable for liquid filling. Background technique [0002] Rotating ascending dispensing devices have been used to dispense cosmetic ointment-type products to the underarms of users. Generally, the hand wheel is manually rotated to drive the feeding screw, and then the lifter to send the product out of the outer end of the dispensing device. The movement of the lifter in the article applies pressure to it so that the article is forced through the orifices of the perforated dome to the application surface of the perforated dome. [0003] A nasty side effect of this type of dispensing device containing paste-like products is that after the product has been dispensed there is still residual pressure inside th...

AI Technical Summary

Problems solved by technology

However, when using this method, the contact surface between the gasket and the inner wall of the dispensing device is large, which partially or completely prevents retraction of the lifter, as discussed in US Patent No. 5,000,356 to Johnson et al.

When the gasket is not used to completely surround the lifter, the lifter can float freely (there is only minimal contact pressure with the inner wall of the container, allowing the lifter to retract), but it is easy to cause non-perpendicular to the separation during use. The problem of affecting the correct positioning due to the feeding screw inside the device

When the lifter is not positioned correctly inside the dispensing unit, the product distribution is non-uniform and the product pressure directed at the perforated vault is not uniform, which causes the lifter to release pressure unevenly and the product to ooze

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