Lids TRIZ Cases

A thermoformed plastic recloseable device with a hinged door and frame attaches to paperboard cartons.

A cosmetic case tray uses a notched zone to engage a cover toothed wheel, raising the product for access.

An integrally formed tamper evident collar uses a discontinuous annular portion and slot to keep the tab attached, eliminating waste and choking hazards.

A detachable container lid uses a rotating handle to engage internal threads and secure a sealing ring against the vessel wall.

A vanity case lid uses a torsion spring and friction member to control opening speed, reducing production costs by simplifying assembly.

Friction within the ball and socket mechanism holds the cover in open positions, eliminating complex valves that hinder cleaning.

A container closure uses a pull tab to tear a membrane via saw teeth, eliminating foil remnants that hamper resealing.

A hinged plastic container pivots its lid to form a flat serving tray.

Segmenting the paperboard blank with a curved flex-hinge reduces adhesive use and manufacturing cost while allowing conversion to a flat serving tray.

Segmented cleats and a pivoting latch join cases without reducing interior volume, resolving the trade-off between connection security and storage capacity.

An extruded silicone spring strap replaces scrap-heavy punching with additive profiles, enabling reliable self-opening packaging.

Tapered edges and rolled corners enable efficient nesting while eliminating sharp injury risks.

Integrating a frangible membrane with the cap closure prevents product leakage in hot climates and provides tamper evidence.

A slider lid uses a resilient member to align protrusions with openings, blocking fluid flow when closed.

A dispensing closure integrates a spiral tether and breakable tab to provide hermetic sealing without separate liners.

Propylene housing with polyethylene foam cushions absorb impact forces, accommodating varying bottle sizes without increasing container volume.

Protruding boundary zone between roof and body sub-panels accommodates larger pour spout fitments without risking material breakage during storage.

Segmented hinge lugs prevent cover detachment without metal brackets, enabling fully recyclable plastic construction.

A rotating spool converts handle motion into axial locking ring movement, preventing inadvertent disengagement under pressure.

A joint compound tool merges a mixing member and blade into one unit for efficient handling.

A container overcap uses a stand-off rim projection to create frictional engagement that holds the sealing flap in an open position.

An extracted plastic hinge ring joins identical metal container halves, eliminating complex metal tab processing while maintaining secure interfit connection.

Interlocking base and cover features enable rapid stacking, resolving production line delays caused by unstable container alignment.

A swivel lid closure device uses a locking hook that changes pivot radius during unlocking to secure the container.

A pulp-molded container uses a channel and protrusion interface to form a fluid seal without plastic additives.

Biasing arms in the latch cage engage the first portion to prevent jamming while eliminating separate fasteners and simplifying assembly.

Paperboard sealing disc with partial cutting lines and a push-tab mechanism enables easy opening of packaging containers.

Pinching members disengage locking lugs from the base to solve the contradiction between child safety and ease of operation for hazardous item storage.

A molded plastic closing device uses a hinge mechanism to connect the cover and main body.

An integrated packaging case prevents separation during delivery by using protrusions and recesses to lock the wiper blade securely.

Polyethylene composite container with shackle holder prevents strap damage and loss.

A rotatable document box uses a raised member and hollow rib to hold the top container open.

A condiment container uses a ramp portion to distribute sauce evenly across elongated food items.

Segmented rigidity allows a hinged package to break weak portions for easy opening without deforming the rigid sections that protect merchandise.

Rigid lid uses overhanging lips and locking tabs to secure onto bucket rim channels, enabling stacking while protecting contents from contamination.

A recessed connecting strip joins the half-shells, allowing irreversible opening without structural damage.

Protruding elements on a container body and cover act as locator aids to ensure precise positioning, maintaining airtight sealing during transport.

Segmented lugs and a deformable flange resolve the contradiction between secure closure and ease of opening in clamshell packaging.

Interlocking projections on the inner ring and sidewall lock the lid during closure, preventing pressure buildup and unintended opening.

A packaging container uses a deformable flange to release inward projections from base apertures for one-handed opening.

A biodegradable polyester compound with mineral filler resolves the trade-off between heat resistance and impact strength for hot food applications.

A raised cover perimeter directs spilled liquid into a central well, separating containment from the drinking opening to eliminate heat transfer discomfort.

Segmented lid stacking steps resolve the trade-off between stacking stability and separation ease, reducing overall height.

Zeolite particles embedded in acrylic resins deliver high absorbency and adhesion, eliminating breakage risks from loose desiccant packaging.

Vertical rails support a movable lateral panel inside the container, resolving the trade-off between versatile storage and effective item insulation.

A tamper-evident food container uses a frangible score line and pull tab to detach the cover cleanly without leaving residual strips.

Segmented container body and lid ribs decouple contact points to reduce opening force while maintaining reliable sealing integrity.

A moisture retention seal uses micro-bead elements on cooperating sealing surfaces to form partial seals that prevent moisture transfer.

A ruggedized enclosure protects portable disk drives using compliant mounting structures and shock-absorbing materials.

Integrating the latch mechanism within a swingable handle reduces component count and occupied area while maintaining secure locking.