Plastic article or earthenware shaping or treating: apparatus – With direct application of magnetic force to manipulate...
Patent
1982-10-20
1984-04-24
Pavelko, Thomas P.
Plastic article or earthenware shaping or treating: apparatus
With direct application of magnetic force to manipulate...
425542, B29F 100
Patent
active
044445504
ABSTRACT:
This invention relates to mold apparatus for injection molding plastic bonded magnets. The apparatus comprises body means having a molding cavity and gate. The body means includes a magnetizing device composed of a support of non-magnetic material having one or more permanent magnets contained therein and a non-magnetic wall portion interposed between each magnet and the cavity. The wall portion defines at least a portion of the cavity and the permanent magnet is disposed relative to the cavity such that at least a portion of the magnetic field therefrom enters the cavity through the wall portion. The support is of a strength to withstand the pressures of molten plastic in the cavity without the permanent magnet being present therein. The permanent magnet itself is so constructed and is of a physical strength inadequate to withstand such pressures. The support, therefore, isolates the permanent magnet from the molding pressures which could damage the magnet if directly applied thereto.
REFERENCES:
patent: 3663131 (1972-05-01), Hegewaldt
patent: 3881853 (1975-05-01), Loubier
Gust George A.
Pavelko Thomas P.
LandOfFree
Permanent magnet mold apparatus for injection molding plastic bo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Permanent magnet mold apparatus for injection molding plastic bo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent magnet mold apparatus for injection molding plastic bo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-113787