Closures TRIZ Cases

A compressible tube container with a sterile venting valve dispenses pharmaceutical contents.

Flexible prongs engage side grooves on drill bits to prevent rotation, stopping shoplifting and price manipulation without complex mechanisms.

A cushioning support member absorbs external shock and volume expansion forces, preventing housing separation and pumping damage in airless dispensers.

Nested caps use spring fingers engaging ramps to prevent unscrewing without axial compression.

A liquid distribution device features a demarcation zone with contrasting color to visually locate the orifice.

A container closure uses a cammed collar and flexible spokes to lock the lid securely.

A cap assembly integrates the inner stopper and cap to open the seal by rotating the outer cap.

A pull-tab seal uses a partial upper laminate to form a gripping tab within the perimeter.

Engaged protective members cover the filler neck pipe connection structure, suppressing damage from external impact forces while maintaining system reliability.

A vial rubber stopper uses fluororesin film lamination on the cylindrical leg portion to lower friction resistance during insertion.

Hinged outer sidewall segments flex under force to disengage blocking features, resolving the trade-off between child safety and adult operability.

Elastic silicone cap seals beverage spigots against contaminants while adapting to varying diameters without interfering with pouring.

Zoning materials in a medical rubber closure resolves the trade-off between moisture permeation and oil resistance while minimizing extractable substances.

A closure vent port directs air and liquid flows non-parallel to the pouring spout axis.

Segmented attachment points create finger access gaps for easy cover detachment while maintaining reliable stopper sealing and hygiene.

A delivery device with an S-shaped path and ring-shaped chamber prevents fluid loss during rotation while reducing manufacturing costs.

Internal spikes pierce surface skin to prevent bubble formation and ensure precise dosing accuracy.

A spray cap with a resilient insert opens a liquid flow path under pressure, preventing dripping when inverted.

Gradual curing of polymeric coatings on cork stoppers prevents pore formation and blocks phenolic compound migration into white alcoholic beverages.

A tamper resistant cap uses interlocking teeth and a frangible seal to secure containers against accidental opening.

Eliminates separate sealing steps by merging the top and seal into a single molded unit, reducing manufacturing time and cost.

A tank closure system uses a positive locking mechanism to engage the cap and flap, ensuring correct positioning before sealing.

A beverage can lid incorporates a reversible closing element that exposes a pressure equalizing opening during actuation.

An inward transition step reduces the outer diameter below the neck support ring, resolving the trade-off between weight reduction and mechanical strength.

An integrated bottle cap reservoir with a dispensing valve releases measured fluid additives via pressure, resolving manual pouring complexity.

A refillable liquid container uses a valve assembly and bellows to transfer fluid between parent and child units.

Paperboard locking tabs use elastic memory to engage outer sleeve slots, preventing unauthorized child access while allowing adult operation.

A vented spout uses a biasing element to lock the valve and an air duct that opens only during liquid flow.

An inclined siphon tube connector extracts liquid from containers by positioning the intake near the lowest bottom point.

A spout collar with a slanted inner surface guides pourable product flow through the outlet channel.

Blending waste polyolefins with heterophasic compositions restores mechanical properties degraded by recycling heterogeneity.

A spout features a tubular member with an end portion extending radially inward from the main body.

A drop dispenser uses a non-circular droplet formation surface with inward concave indentations to shape liquid release.

A multi-flow plug uses a circular rim and tactile holes to control liquid flow.

Spring-loaded hose retracts automatically to prevent jamming during port cover closure in sterile environments.

A fitment integrates a flexible valve made from ethylene/α-olefin multi-block copolymer to control flow through an internal slit.

Leaf springs and frictional features increase torque required to unlock the piston stem, preventing unintended leakage during shipping.

Composite protective layers with thermally foamed material reduce heat input, preventing pressure spikes and stabilizing fuel cell operation.

Blind threaded mounting holes in thief hatch assemblies prevent gas escape through attachment points.

Single-process injection molding bonds the closure to the hollow body, eliminating assembly seams that cause contamination and leakage risks.

A push-on discharge cap uses a radial air hole and undercut engagement to reduce mouth portion height.

Segmented cover members isolate the break-off section from assembly forces, preserving sealing performance and enabling efficient cleaning.

Radial leaf spring deformation secures screwable filter casings, minimizing radial dimension while preventing loosening under cold conditions.

A protective applicator cap with a detachable spray nozzle and rotatable cutout prevents powder spillage during transport.

A porous flow control member regulates liquid movement through a dispenser assembly.

Segmented hinge assembly with detent grooves compensates for molding shrinkage to ensure secure fit.

A removable cap features an expulsion shape that directs residual liquid toward an absorption pad.

A dropper featuring a cylindrical channel area and conical outlet reduces fluid viscosity through shearing to control droplet size.

Segmented emulsion steps control particle size while isolating markers in separate pores for reliable authentication.

Radial inward keys interlock with a dispensing tip groove to restrict access while reducing removal complexity.