Cosmetic bottle, case, tube, jar, airless dispensing pump, sprayer

Airless Dispensing Bottles

Acrylic Lotion Bottles

Plastic Cosmetic Jars

Plastic Cosmetic Bottles

Plastic Cosmetic Tubes

Plastic Cosmetic Cases

Plastic Lotion Pumps

Sprayers, pumps & atomizers

Plastic Closures

MS003A - 15ml	Diameter= 37mm, height=110mm
MS003B - 35ml	Diameter= 37mm, height=148mm
MS003C - 30ml	Diameter= 56mm, height=90mm
MS003D - 50ml	Diameter= 56mm, height=102mm
Material	Bottle: acrylic, Cap: ABS, Inner bottle: PP
Style	Cylinder
Manufacture	Injection molded
Color	Custom colors are available
Decorating	Silkscreen, hot stamping, UV coating
Application	Beauty, Cosmetic, Health care, Moisturizers, Cream, Essential oil, Gel
Minimum order quantity	5000pcs

Most cosmetic and skin care products contain preservatives to prevent the growth of microbes that might cause con--sumers to experience allergic or other adverse reactions. In some cases, the preservativescan cause skin irritation.

It has long been thought that an airless, or anaerobic, packaging system would permit manufacturers to discontinue the use of preservatives, while at the same time preventing the growth of aerobic microbes. To this end, an entire class of airless dispensing systems has been developed.

A Little Background

Some knowledge of traditional pump dispensers is key in understanding airless dispensing systems. Most common pump dispensers are basically comprised of a dip tube, a pump body, or tank, a piston, a stainless steel spring, and an actuator placed inside a rigid container. In addition, there may be one or two check balls to prevent liquid from flowing out of the pump body back into the container, and from flowing back into the pump body from the piston and actuator. When the actuator is de-pressed to dispense the product, the pressure in the tank is increased, causing liquid to flow through orifices in the piston and out through the orifice in the actuator. At the same time the actuator is depressed, the stainless steel spring is compressed. When the actuator is released, the spring provides the force to restore the actuator to its original position.

As the actuator and piston move up toward their original positions, a slight vacuum is created in the pump body, which allows the check ball to lift up off its seat, and allows another dose of liquid to fill the pump body. Simultan-eously, as the actuator and piston move up, channels are opened that allow outside air to enter the container. This air replaces the volume of liquid drawn into the pump body, thereby preventing the build up of a partial vacuum that would prevent further dispensing from a rigid container. Obviously, traditional pump dispensers are not anaerobic— that is, the product is always in contact with air.

Airless Systems

In so-called airless systems, the product is isolated from the air. In addition, the dosage expelled with each stroke of the actuator is approximately equal to the amount of product contained in the pump body. Thus, this is not a system that will dispense continuously while the actuator is held in the down position.

There are several forms of airless systems. However, in this context it is important to note that by the term airless, we mean that the product is separated from the surrounding air by a barrier that prevents its ingress.

Aerosols Are Airless

Probably the most ubiquitous airless package is the aerosol. After filling with the concentrate, the aerosol can is subjected to a partial vacuum, normally in the range of 18 to 22 inches of mercury (61—74 kPa). While still under this partial vacuum, the mounting cup with the aerosol valve is crimped onto the can. The propellant, usually amixture of iso-butane and propane, is added either under the cup or through the valve.

Basically, there is a flow-in gasket between the mounting cup and the container. The stem gasket provides a seal to prevent product dispensing until the actuator is de-pressed. When the actuator is depressed, the valve stem moves downward, compressing the return spring and also moving the orifice in the stem below the valve stem gasket. This enables the product to flow up the dip tube, through the valve and the orifice in the actuator, to the atmosphere. Unlike mechanical pump dispensers, aerosol systems will continue to dispense as long as the actuator is depressed.

Use of Flexible Pouches

Most of the earliest forms of airless containers were comprised of flexible pouches affixed to mechanical pump dispensers contained in rigid outer containers. Some of these systems had dip tubes through which product flowed into the pump body, and others did not.Each manufacturer has its own proprietary system for attaching the pouch to the pump body, and the entire assembly to the outer rigid container. The pouches themselves are often comprised of several layers to provide a barrier against moisture and air.

Operation of such systems is similar to the operation of ordinary mechanical pump dispensers. The difference with the pouch system is that the air required to fill the void left by the dispensed product is directed into the space between the inner wall of the rigid container and the outer surface of the flexible pouch. This enables the pouch to collapse thereby keeping the product in contact with either the dip tube’s inlet, or the inlet to the pump body. Such systems were able to dispense about 90+% of the product. How-ever, there were some instances of leakage when the connection between the pouch and the pump either failed during use or as a result of a manufacturing flaw.