Injection nozzle for minimizing stringing of an injection material
AssigneeNissei Plastic Industrial Co., Ltd.
InventorHaruo Watanuki
Life of this patent
Estimating the term…
Abstract
An injection nozzle having a thread provided on an inner peripheral wall of a nozzle bore at a nozzle head thereof. With the thread, the inner peripheral wall is formed into an uneven surface along a length 1.5 to 4 times the nozzle bore diameter. The fluid resistance against the inner peripheral wall of the nozzle bore is allowed to increase, thereby preventing resin stringing.
Claims3
An injection nozzle characterized in that a thread is provided on an inner peripheral wall of a nozzle bore contacted by injectant at a nozzle head of the injection nozzle to form an uneven surface with a length 1.5 to 4 times the nozzle bore diameter on the inner peripheral wall whereby stringing of the injectant is hindered.
An injection nozzle comprising a nozzle head having a nozzle bore through which a material to be injected is flowable, the nozzle bore forming a passage having an internal peripheral wall disposed to contact the material to be injected, the internal peripheral wall having a thread provided thereon to form an uneven surface, whereby stringing of the material to be injected is minimized.
Dependencies are inferred from the claim text.