Process of injection molding a laser mirror substrate

Patent · Tue Dec 01 04:00:00 EST 1987

OSTI ID:5610895

Rosman, I E

This patent describes a sequential process for forming a molded article from molded plates formed in sequence in serial abutment with each other in a mold. The mold has a cavity therein defined by walls the back wall being movable and one or more of the other walls bearing injector openings, dies for forming passages within and extending therethrough the plates, the dies projecting from the movable wall toward one of the non-movable walls. The process comprises the steps of: (1) injecting a mixture of inorganic particles and a resin binder into the cavity between the die-bearing movable wall and the non-movable wall and molding a plate therefrom having passages extending therethrough formed by the dies; (2) moving the movable wall away from the molded plate to form another cavity in the mold adjacent to the molded plate; (3) injecting a second mixture of inorganic particles and resin binder into the cavity formed in step 2 to mold another plate; and (4) repeating steps 2 and 3 at least once to form a stack of abutting, molded plates which comprise a molded article containing passages therein formed by the dies.

• Assignee: Rockwell International Corp., El Segundo, CA
• Patent Number(s): US 4710332
• OSTI ID: 5610895
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
BINDERS
FABRICATION
LASERS
MATERIALS
MOLDING
MOLDING MATERIALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
SUBSTRATES