Cage

Cage (often a pallet cage or mesh cage) is a reusable container with wire mesh, bars, or solid sides that sits on a pallet base or includes its own forkable frame. It keeps parts from falling off during travel and stacking, and it often folds or collapses when empty to save trailer and buffer space.

Floor language mixes cage with rack and stillage. In practice they are close cousins: all are mobile returnables that carry a batch as one ID. Cage highlights the enclosed or mesh body. Twinzo pages use cage and rack as the clearest global words for that object.

Cages are core returnable packaging. Losing an empty cage pool can stop the next supplier shipment as hard as losing the parts. That is why search and empty-return discipline sit beside production tracking on many automotive and discrete floors.

Key Components

Mesh or barred body: The enclosure that holds and protects the load during fork and trailer moves.

Base and fork pockets: Pallet-sized footprint or integrated base that forklifts and tuggers can engage.

Collapsible design: Folding sides or nested empties that cut return freight volume.

Identity: Painted number, barcode, RFID, or RTLS tag operations already use on the floor.

Stack and lock features: Geometry that lets loaded or empty cages stack safely in buffers and trailers.

Applications in Manufacturing and Logistics

Internal logistics moves WIP and finished kits in cages between cells, wash areas, and docks. Drivers call cage IDs on the radio. When a cage leaves a designed buffer, search and find with RTLS targets that ID on the live map.

Supplier parks use cages on short JIT loops. Gate reads confirm which cage IDs boarded a trailer. Empties must return or the pool starves. That same ID layer supports internal logistics optimization and end-to-end station drops.

Benefits and Challenges

The benefit is protection plus a durable host for identity. One tagged cage can carry many product changeovers. Mesh visibility helps operators confirm contents without opening every load.

The challenge is pool leakage and informal put-asides. Cages hide behind lines, leave with carriers, and sit full of scrap nobody owns. Collapsible designs fail when operators skip folding. Tags fall off mesh corners if mounts are weak.

Related Terms

Stillage is the UK and EU synonym for many metal cages and frames. Rack is the broader mobile-unit word twinzo prefers in global copy. Pallet is often the base under the cage. Returnable packaging is the class. Asset tracking and search attach to the cage ID.

Frequently Asked Questions

Cage versus stillage versus rack? Same family of mobile returnables. Cage stresses mesh or bars. Stillage is regional jargon. Rack is the plain global term for the sequenced or WIP unit.

Should empties be tagged too? Yes when empty shortage stops the next run. Empty-cage hunt is a common plant pain that location exposes quickly.

Is a cage better than stacked cartons on a pallet? For heavy, sharp, or high-cycle parts, yes. Cartons crush and hide mix-ups. Cages protect and keep one durable ID.

What accuracy is enough? Medium-precision location (about 1–3 m / 3–10 ft) finds which buffer or dock holds the cage. Sub-meter (~3 ft) is rarely needed for search alone.