Closures TRIZ Cases

An elastically deformable upper wall increases internal pressure to open a slotted shutter, preventing air penetration during one-handed operation.

A rotatable flow regulator switches between free and metered liquid dispensing modes.

Permeable mesh lid refreshes water quality and prevents fish loss during shoreline collection.

Segmented annular seals capture dust and maintain redundancy, preventing leakage when single points fail.

A pneumatic whistle generates ultrasonic emissions during container compression to passively record dispensing events via smartphone detection.

A dispensing closure uses a helical movement mechanism to simplify the base and element structure.

Interposing a controlled solvent layer between film edges resolves bonding reliability issues while reducing material costs and environmental risks.

Frangible bridges connect the tamper-evident head to the stem, breaking upon first use to prevent rattling and provide clear visual indication.

Distinct sealing members on a bag-in-box closure prevent piercing damage while enabling controlled overpressure relief for safer beverage handling.

An opaque film covers the tear strip free end on a single-use package, resolving manufacturing complexity and material usage trade-offs.

Replacing gravity-dependent plates with an elastic foil membrane ensures consistent liquid dosing accuracy regardless of container orientation.

Bubble valves in flexible pouches replace rigid fitments, resolving complexity trade-offs while enabling precise multi-liquid dispensing.

A squirt dispensing closure uses a snap-mounted flow baffle to create a restricted annular passage for high-velocity liquid ejection.

Synchronous valve application and thermal welding secure one-way valves to flexible bags.

A thread protector uses an inner tapered groove to frictionally engage the pipe end and resist rotational motion.

A plastic liquid container uses a segmented bladder design to hold fluids safely.

Segmentation separates the cap from the body, eliminating broken pieces during refilling while maintaining air-tightness.

A monolithic flip-top cap employs a bistable living hinge to eliminate complex external locking mechanisms, ensuring reliable positioning for dental dispensers.

Segmented knock cam surfaces distribute force evenly to latches, preventing asynchronous operation and ensuring reliable sealing.

A rotatable lid assembly pivots on a hinge to engage jar threads and press a liner against the rim.

A dispensing plug integrates an adjustable valve mechanism into flexible fluid containers to control flow through a biased closure system.

Polygonal container uses reinforced edges and HDPE material to enhance structural integrity for safe hazardous material transport.

Aligning cork lenticels perpendicular to the stopper axis limits oxygen permeability variation, ensuring consistent wine aging.

Segmented housing wall with air gap reduces injection molding cycle time while creating a thick-walled appearance.

An inclined guide member directs the fueling nozzle tip to a pressing part, while a restriction wall prevents incorrect nozzle insertion and dust entry.

Hydrogen doping suppresses oxygen content and crystalline oxide formation during heat treatment, reducing leakage current while maintaining high capacitance.

Segmented two-piece design resolves the contradiction between hermetic sealing reliability and ease of operation by separating sealing and torque functions.

Separate air vent path with a check valve prevents initial liquid leakage and ensures rapid air reentry for smooth pouring.

A rebar protective cover uses a cementitious seat to resist impact penetration.

A tubular channel portion houses an outlet valve unit with a spring-biased moving sealing member that seals the ink outlet in a non-supplying state.

A vacuum pump container uses a biased discharge hole to enable uniform one-handed operation without tilting the button part.

Interference means on the outer lid pivot inner lids to seal discharge ports, preventing leaks without re-grasping.

Deforming the flexible cap creates suction that draws cosmetics into the tube body, preventing air exposure and product deterioration.

Peripheral pressurization holes distribute pressure to lift the check valve, preventing residue adherence in viscous fluid containers.

A rotatable cover interlocks with a center panel track to seal beverage cans.

A piercable closure integrates a water vapor-permeable membrane within its fastening region to enable steam sterilization.

A heat flux-responsive plug seals a pressure relief vent using phase change mechanics to isolate thermal activation from mechanical pressure sensing.

Segmented lid base and cap components enable resealing of opened metal beverage cans without leakage.

A child-resistant beverage lid employs a cloverleaf cover and hinge to prevent accidental opening by children while maintaining adult access.

An elastic valve cuts during nozzle insertion to block gaps, eliminating pre-cut grooves that cause leakage and simplifying the injection process.

A reagent vessel with a magnetic mold attaches to steel holders to prevent leakage and accidents caused by shaking or tipping.

Vented engagement beads in resealing overcaps reduce closing force and provide audible feedback, protecting contents from moisture.