Closures TRIZ Cases

Air pressure adjusting element manages thermal expansion in water tanks by releasing excess air to prevent seal damage.

An interlocked pull tab triggers a secondary lever to open both dispensing and vent apertures in one motion, eliminating gurgling from pressure imbalance.

Concentrating facets near the closed end of a blow molded container boosts top-load buckling strength while preserving visual appeal and reducing leakage risks.

Suspended inner rings prevent moisture-induced locking in fluid containers by utilizing silica gel elasticity and dynamic spacing.

A laminate lid design uses an adhesive-free region to distribute pulling force across the bond for reliable detachment.

A domed metal venting member with a burst slit relieves pressure by bending past retaining tabs, preventing air leakage during vacuum cycles.

A porous foam filter in the inner cap equalizes pressure changes during transport while blocking toner particles to prevent leakage.

Segmented openings equalize pressure to stop glugging while a recessed storage keeps the tube clean.

A flexible bag spout assembly uses a dual lead thread with asymmetric threadforms to secure the connection against mechanical stress.

A dispensing head membrane provides microbiocidal protection while ensuring reliable product distribution through dynamic deformation.

Axial displacement of the inner cap disengages angular abutments from the outer cap, resolving the trade-off between child safety and adult dexterity.

Dual pistons and a mesh filter with specific area ratios resolve varying bubble sizes in conventional foamer dispensers.

Segmented container body and frame structure maintain surface-to-volume ratio for optimal oxygen transfer while enabling full drainage.

A flexible tubular air pump contracts to create pressure differentials that move gas through one-way valves.

Applying cork sheets to mirrors and roll via polyurethane binder and steaming resolves the trade-off between structural homogeneity and aesthetic appeal.

End surface relief valves arranged in rotational symmetry direct gas discharge away from the substrate, preventing interference with adjacent components.

A tiered tail cap with multiple plug portions and a pull mechanism simplifies installation.

Gussets join bevel walls to side walls and removable sleeves attach fork pockets, solving structural strength issues in plastic dumpsters.

A multi-compartmental container merges separate product compartments into a single unit with an integrated outlet nozzle.

Deformable slitted liners resolve the sealing versus flow rate contradiction by dynamically expanding openings under compression while resealing automatically.

Nested valve design with rounded transitions eliminates dead zones while triple seals block bacterial contamination.

An integrated protective cover uses a resilient collar to absorb impact forces, resolving the trade-off between safety protection and bulky design complexity.

Frangible members connecting dual skirts break at a set force to provide tamper evidence without adding complex separate components.

Replacing rigid fitments, the multi-layer bubble valve maintains upright stability while enabling re-closure through geometry-driven hinge mechanisms.

A clamping device uses a securing plate that deforms to match belt curvature during tightening, enabling simple relative movement between components.

A non-negative pressure radiator cap uses a vertical guide to move the vacuum valve without rotation.

Bayonet couplings lock a refill container to pierce a frangible film, reducing transport weight while maintaining safety.

A collapsible container uses integrated living hinges to snap flat sheets into rigid three-dimensional structures.

Segmenting the tear-off strip into two functional parts with opposite target tears prevents incomplete tearing regardless of user pull direction.

Segmented flow paths and pressure buffering prevent jetting water in drip hoses, reducing content waste while maintaining user convenience.

A germicidal medium evaporates via microwave pulses to sterilize enclosed container spaces.

A segmented valve rod isolates the sealing tip from friction delays, preventing air inflow during pump depressurization.

A dispenser uses a conical membrane integral to the container wall with a thinner weld seam to enable controlled rupture.

A flexible applicator body with multiple curved segments enables versatile product deposition across varied surface areas.

Asymmetric through hole positioning directs fluid flow through segmented paths, resolving instability in spray head ejection patterns.

A splash guard with radial ridges shields the vent membrane from chemical splashes during transport, preventing damage while maintaining air passage.

A swingable stopper with a rising restriction portion contacts a locking feature on the discharge head to constrain upward movement during accidental pulling.

Dual seals tension the body to prevent leakage during shipping, reducing costs via segmentation.

A spring-loaded plug opens vent holes during dispensing to allow air entry.

A detachable leash system anchors to a beverage container lid and wraps around the handle to secure the top.

An elastically deformable tubular outlet collapses to seal the fluid conduit when pressure is removed.

A fluid dispensing valve uses a resilient member and sealing tab to enable single-handed operation.

A protective cap uses a mechanical membrane holder to secure a resilient sealing membrane without ultrasonic welding.

A beverage can lid uses a flexible pin and locking bead to secure the ventilation opening.

Storage grooves absorb residual cosmetic material after initial discharge, extending product life and reducing refill frequency.

A valve stopper uses a recessed connecting member to create localized flexibility in the sealing surface.

A moldable splash guard snaps onto container fitments to shield vent membranes from liquid contact during transport.

A dropper bulb with a flange and collar acts as a bottle cap to create a secure seal against the container neck.

A liquid cartridge recycling method uses a switchable valve and replaceable blocking member to inject ink into the storage unit.