Closures TRIZ Cases

An inverted discharge port and distance-setting pushing portion let foam be dispensed accurately onto a hand with one-hand operation.

See how a dual-spout bottle integrates a standard drinking spout and a straw-assisted pill deli

See how a compressible-cavity dispenser attaches to a phone, uses nested structure and twist-ac

See how a separate mixing chamber and compressed-air transfer prevent water from entering the b

See how a suction-operated valve uses friction, stiction, and deformation to seal until user su

See how variable-thickness ejection-port walls with controlled adhesive properties enable foam

See how an elastic straw-vent assembly equalizes air pressure before opening the fluid path to

See how telescopic arms with adjustable support hands enable nested storage of multiple contain

See how a convex-tip flexible valve opens at 15-40 mbar suction to prevent air ingestion and gl

See how positioning the liquid inlet at the gas merging point of multiple adjacent flow paths i

See how an automated motor-driven lid mechanism minimizes hand contact with the reservoir and l

See how a threaded guide device with preferred positions provides tactile feedback to simplify

See how a dual-barrel soap storage device uses a pressure balancing pipe to enable reliable aux

See how a dual-chamber pod with internal piercer mixes liquid and solid ingredients on demand,

See how a pushing portion and inverted discharge port enable one-handed foam dispensing by main

See how a can tap with left-handed ACME thread, internal pin, and backflow preventer enables sa

See how susceptor-equipped base and cover with inversion enable browning on both food surfaces

See how a hopper cover with interior recesses organizes dispenser components during disassembly

See how a dispenser uses aligned markings on housing and cartridge to form a machine-readable c

See how a variable flow cross-section mixing chamber with protuberance and piercing spike impro

See how a foldable valve assembly with interlocking arms and a bent conduit reduces leakage, si

See how a three-part airway with bottom-mounted extraction outlet and check valve enables easy

See how a stainless steel mixer assembly eliminates odor retention and rattling noise in protei

See how a deformable sealing mechanism isolates dry formula until needed, then releases it into

See how a compressible plate body with a slit automatically closes under liquid pressure to pre

See how a cartridge cap with separable base and plastic film seal enables effortless opening an

See how a metering stage with separate nozzles and vent tubes maintains accurate liquid ratios

See how segmented annular portions with varying diameters and wall thicknesses enable controlle

See how a bottle with separate pouring and spray outlets uses a dosing chamber to apply precise

See how guide and anti-rotation devices secure cartridge alignment for leak-free beverage dispe

See how a separate mixing chamber and compressed-air transfer prevent fluid backflow into the b

See how a movable secondary container with ball-and-rod closure enables precise sequential disp

See how a gimbal-mounted straw enables precise angling to retrieve tapioca balls and other soli

See how a piston valve and cup-shaped reservoir automatically fill and dispense measured doses

See how a two-section drinking straw uses rotational movement to regulate inflow, minimize resi

See how a frangible air vent and latching piston mechanism provide visual tamper evidence and p

See how a curved flow guide channel between upper cover and housing eliminates turbulent vortex

See how a can tap with ACME left-handed threads and integrated backflow preventer safely engage

See how a removable aerator bottle with integrated gas supply and liquid flow controller enable

See how a two-part crank mechanism enables rapid tea strainer displacement with minimal control

See how a dual-mode cup lid with elastic switching and push-button mechanisms enables safe hot

See how varying ejection-port height and adhesive properties enable foam discharge devices to c

See how a nested cup support structure with complementary surfaces limits vertical and horizont

See how a rotatable spout design prevents accidental dispensing through closed-position locking

See how a pyramid-shaped bottom with centered suction tube positioning reduces residual liquid

See how a movable funnel and measuring container prevent string-shaped food from hanging or tea

See how a multi-position selector enables both straw-based upright drinking and inverted dispen

See how a rotating first outlet and flip cover provide two water intake modes, resolving the si

A plastic resilient piece and valve needle structure replaces metal springs to prevent leakage while simplifying perfume pump recycling.

Longitudinal ribs, grooves, and axial locks let an LDPE closure use thinner walls while preserving torque transfer, sealing, and easy reclosing.

A septum-piercing attachment connects directly to the cap, enabling safer fluid addition or withdrawal without separate needles.

A piston, check-valve, and vent path layout improves main-cylinder decompression, cuts priming repeats, and stabilizes liquid spraying.

A valve-sealed champagne cartridge in a protective shell enables safe zero-gravity opening, dispensing, and traditional serving rituals.

A one-piece frangible membrane lets the closure open with less force while reducing waste, cost, and recycling issues.

A slit-nozzle gas curtain purges wafer cassette air quickly with less gas by limiting mixing at the lid opening in clean room transfer.

A threaded rotary member lifts the piston linearly to dispense cosmetics cleanly, preventing leakage, oxidation, contamination, and waste.

Screw-locked modular corner protectors create adjustable grooves and double-layer cushioning to secure flat-panel corners without tape.

A two-part cap lets a refill capsule connect through a second mouth, enabling spill-free refilling while keeping the absorbing element clean.

A removable peelable or meltable seal keeps the fitment interior sterile before blow-fill-seal assembly, cutting manufacturing complexity and cost.

Controlled venting through frangible layers and airways enables sealed specimen access while reducing aerosol formation and cross-contamination.

A pod-based dispenser mixes concentrate with diluting fluid on demand, cutting reservoir space, refill frequency, and fluid waste.

An attached film and inward-opening lid replace disposable foil, cutting sealing waste while keeping tamper evidence and easier access.

An add-on tip and base shrink squeeze-bottle eye drops to 5-30 µL without bottle changes, cutting waste, irritation, and preservative exposure.

Directly integrating the closing element with the lid improves spout alignment, limits deformation, and helps prevent package leaks.

A selectively engageable inner and outer metal cap enables recyclable child-resistant resealing while preserving contents and reducing leaching.

A lower-side check valve vents pressure from cosmetic containers while preserving cap appearance and preventing content leakage.

Notches and folding lines let the protector conform to load corners while resisting compression and preventing stacked-load collapse.

An eye cup guides drops onto the eye while shielding the nipple from contact, improving dosing accuracy and reducing waste and infection risk.

A holder, plug body, and overcap let the applicator absorb liquid before use while sealing the discharge path to prevent leakage.

An integrated eye cup aligns the dropper with the eye socket to improve dosing accuracy, reduce waste, and limit contamination.

Nested stackable caps and a centering gripper automate sample vessel sealing while saving space and reducing contamination risk.

A one-piece molded outlet channel and toggle valve cut seals and part count while keeping water dispensing reliable and easy to use.

An integral frangible membrane enables low-force opening, cuts separate plastic waste, and keeps dispensing closures tamper-evident.

A gap in the cap retaining shoulder creates an air passageway that lets a stored spout reverse for dispensing without wet handling, spillage, or air-lock.