Dual feed bushing for multi-cavity injection molding

Details Dual feed bushing for multi-cavity injection molding Dual feed bushing for multi-cavity injection molding

1986-11-05

1987-11-10

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

26432815, 425562, 425563, 425564, 425566, 425588, B29C 4522

Patent

active

047054735

ABSTRACT:
This invention relates to an improved valve pin bushing for a multi-cavity, injection molding system. The valve pin bushing has a central bore through which the valve pin extends. The melt duct extends through the bushing to join an enlarged portion of the central bore around the valve pin. In the bushing according to the invention, the melt duct branches into two arms with smoothly curved bends which lead to opposite sides of the valve pin. This avoids the problem of streaking and slow melt flow on the opposite side of the valve pin.

REFERENCES:
patent: 4026518 (1977-05-01), Gellert
patent: 4053271 (1977-10-01), Gellert
patent: 4433969 (1984-02-01), Gellert
patent: 4443177 (1984-04-01), Modur et al.
patent: 4446360 (1984-05-01), Gellert
patent: 4511528 (1985-04-01), Kudert et al.
patent: 4609138 (1986-09-01), Harrison

Affiliated with

Also associated with

Rating

Dual feed bushing for multi-cavity injection molding does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual feed bushing for multi-cavity injection molding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual feed bushing for multi-cavity injection molding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1065192