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Inverted Airless Bottle 15ml 30ml 50ml Used for Cosmetic Package Support Customization

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Ningbo Sunwinjer Daily Products Co,.LTD

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Brand Name : SWJ

Place of Origin : Zhejiang, China

MOQ : 10000pcs

Price : Negotiable

Payment Terms : L/C,T/T

Supply Ability : 50000pcs per day

Delivery Time : 15-20days

Packaging Details : Box

Colored : clear, injection color, painted colors

Item Type : Refillable Bottles

Closure Type : Pump

Label : Silkscreen print

Body Material : PP

Original : Ningbo , China

Structure : Screw Down

Feature : Leak-proof

Cover Parts : Bottle / Cap / Brush

Industrial Use : Cosmetic products

Base Material : Plastic

Eco Friendly : Yes

Neck Height : 16mm

Specification : 15ml 20ml 50ml

Surface : Smooth

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How an Airless Bottle Works

Airless bottles operate on a vacuum-driven dispensing principle:

Outer Shell – Typically made of plastic (PP, PET, ABS) or glass.
Pump/Dispenser Head – Pressing it releases the product.
Internal Piston (or Collapsible Bag) – Moves upward as the product is dispensed.
Base Plate – Seals the bottom and maintains vacuum pressure.
Diaphragm (in some designs) – Prevents air from re-entering.

When the pump is pressed, the piston rises, pushing the product out.
As the product is dispensed, the piston creates a vacuum, preventing air from entering.
No dip tube is needed (unlike traditional pumps), so nearly 100% of the product is used.

"Think of a syringe—when you press the plunger, the liquid is forced out without letting air back in."

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