Abstract: A light-tight enclosure for storing and dispensing a roll of photosensitive web material wound about a hollow cylindrical core having open opposite ends. The enclosure comprises a flexible opaque bag with opposite sidewalls extending between opposing rearward and forward portions and opposing upper and lower portions. Each sidewall has a central aperture therein congruent with each core end. The rearward portion defines a closable opening for receiving the roll. A shallow neck portion projects from the forward portion to an end thereof defining an exit slot for dispensing the web material. A collar fits tightly inside each core end, with an annular flange thereon facing axially outward. An annular ring is attachable to each collar in spaced, inward-facing relation to the flange.

Abstract: An adjustable valve stem apparatus 10 adapted for use in an injection molding equipment or device comprises a cylindrical body 12 comprising internally threaded fixed portion 14 and moveable portion 16 threadably mounted on a double-ended screw 30. The fixed and moveable portions 14,16 are relatively oppositely threaded with threads of essentially equal pitch. Moveable portion 16 has a means 26 for removably mounting a valve stem 28 which communicates with a mold cavity. The double-ended screw 30 has a socket 38 formed in its top portion for adjusting the moveable portion 16 relative to the fixed portion 14 thereby corresponding axially displacing the valve stem 28 from a first to second position relative to the workpiece. In a preferred embodiment, the apparatus 10 may be adjusted from the outside of the injection molding equipment, where equipment uptime is critical to the operation.

Abstract: A method of intercalating large quantities of fibrous structures uses a rotatable reaction chamber containing a liquid phase intercalate. The intercalate liquid phase is controlled by appropriately heating, cooling or pressurizing the reaction. Rotation of the chamber containing the fiber sample enables total submergence of the fiber during intercalation. Intercalated graphite fibers having metal-like resistivities are achieved and are conceivably useful as electrical conductors.