TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

DIAPHRAGM GATE [1 record]

Record 1 1998-02-02

English

Subject field(s)
  • Plastics Manufacturing
DEF

Gate used in molding annular or tubular articles. The gate forms a solid web across the opening of the part.

DEF

Used in symmetrical cavity filling to reduce weld-line formation and improve filling rates.

CONT

In gating into hollow tubes, flow considerations can dictate an even injection flow pattern. A single gate is not sufficient. Four gates 90° from each other produce four flow lines down the side of the piece, which may be objectionable. To overcome this, a diaphragm gate is used. The inside of the hole is filled with plastic directly from the sprue and acts as a gate. It must be machined out later. A ring gate accomplishes the same thing from the outside.

OBS

diaphragm gate: term standardized by ISO.

French

Domaine(s)
  • Plasturgie
OBS

entrée de diaphragme : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
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