Cartridge Ammunition TRIZ Cases

Variable wall thickness and a smaller base-side inner diameter help polymer cartridge casings resist firing failure and keep the casing base attached.

Injection stretch blow molding forms a single-piece polymer ammunition casing with severe undercuts, stable thin walls, and stronger projectile retention.

Metal injection molding with FEM-guided design cuts scrap and process complexity while producing consistent cartridge cases across calibers.

Thin strips shaped and welded into separate case parts improve wall thickness uniformity, cut machinery needs, and increase internal volume.

Metal injection molding with FEM optimization cuts cartridge case cost and scrap while improving consistency, strength, and weight.

Tail fins shift pressure behind mass to stabilize flight without rifling or sabots, preserving projectile velocity and accuracy.

Radial tail fins and a rearward center of pressure stabilize a sabot-free projectile without rifling, helping preserve velocity and accuracy.

Inner-wall combustible charge patterns improve ignition uniformity, deliver additives progressively, and simplify ammunition assembly.

A multi-part polymer cartridge uses cap compression and alignment to cut weight and cost while maintaining safe, consistent ballistic performance.

A multi-component polymer cartridge uses reinforced molding and cap retention to cut brass weight while maintaining ballistic uniformity and durability.

Precise microdosing forms a thin annular bitumen seal between case and projectile, improving leak-proof seating with low material use.

Blind-hole locking, a mounting ring, and a rubber seal strengthen the plastic-to-metal cartridge case joint and prevent gas leakage.

A high-fluidity biodegradable polyester blend for cartridge wads balances soil breakdown with impact resistance, low moisture uptake, and standard injection molding.

Integrated ignition ports and housing remove the casing, cutting ejection time, production cost, and cartridge-related malfunctions.

Plastic deformation creates the conical annular wall and retaining fit that join the base piece and case jacket for mass production.

A clearance band and interference band reduce projectile retention tension without crimping, supporting steel case durability and surface integrity.

This case uses aerodynamic fins and an ogival body to stabilize smooth-bore projectiles across subsonic and supersonic flight.

Optimized case dimensions and a rebated rim increase powder capacity and muzzle velocity without requiring a long-action case.

This case combines a polymer cartridge with a metal insert and thickness ratios to resist pressure, pull-off, and break-off failures.

A two-stage cartridge neck balances projectile retention with less crimping and corrosion.

A pyrotechnic casing includes a gap enabling flame propagation to ignite the active mass, resolving ignition reliability issues without complex production.

A rebated rim cartridge case design increases propellant burn efficiency and muzzle velocity while maintaining a short action length.

Composite polymer cartridge cases replace brass to cut weight by 30%, solving low-temperature brittleness through inorganic filler reinforcement.

A dynamic chamber insert radially expands and contracts to accommodate varying cartridge dimensions, reducing excessive extraction forces under high pressure.

Fiber-reinforced polymeric cartridge casing integrates a cylindrical insert to resolve weight versus reliability trade-offs in ammunition design.

Radial arms in the cartridge case bottom eliminate plastic residues from firing while maintaining structural integrity for reliable base connection.

Sloped inner walls in a polymer cartridge casing reduce propellant chamber volume, enabling subsonic bullet speeds without wadding.

Bending flexible tabs onto the combustible skirt eliminates rivet assembly complexity while maintaining traction and torsion resistance.

A polymeric casing with a propellant insert reduces chamber volume by 10% to maintain pressure for reliable weapon cycling.