Manville Service Corporation

Johns Manville

Manville Corporation

Schuller International, Inc.

J-m Manufacturing Company, Inc.

Charles Lostak

John L Sznopek

Robert W Heisler

Spencer I Meier

Henry J Kazienko

Joseph P Ferraro

Jeff Keven Woodring

Manfred Klepetar

Minh D Nguyen

New product intended for use with hazardous materials is packaged in a container that is also capable of being used to ship and dispose of the spent product containing hazardous materials meeting the requirements of UN NA 3085 for Group II Packs for UN DOT Group II hazardous materials and being also capable of being ground up and used for fuel in the manufacture of cement. This method of shipment and novel package is especially useful for shipping filter cartridges intended to be used to filter hazardous materials and to dispose of the spent filter cartridges, producing a novel new product useful as a shipping package and as fuel. Also disclosed is a new filter cartridge that simplifies the new method and package, and the method of making the cartridge.

Package, product and method that facilitates disposal of spent products

A method of manufacturing a fiber glass blanket encapsulated within an air-permeable sheet on one major face and a non-porous film extending over the other major face and the two side edges. The film is applied by being wrapped around the edges of the backed blanket and preferably being heat sealed to the backing sheet. The air-permeable sheet is preferably applied to the blanket before curing of the binder in the blanket, and in a preferred method the glass fibers are deposited directly on the sheet while the sheet is supported on a collection chain.

Method of producing encapsulated fibrous insulation blanket

An aircraft insulation product comprising a glass fiber blanket faced on at least one major face with an air permeable sheet. Insulating fibers coated with unbonded binder are directed to a web of the permeable sheet material supported on a moving collection chain, and the resulting fibrous layer and the web are sent to an oven where the binder is cured. The collection web thus becomes bonded to the blanket by the binder to become an integral part of the insulation product. A plurality of stacked blankets, the edges of which are covered by a film, may be used instead of a single faced blanket.

Faced fiber glass insulation

In certain composite plastic pipe manufacturing operations it is necessary to provide an adhesive coating between the core pipe and the fiber glass reinforced layer, especially if the core pipe is a thermoplastic and the fiber glass reinforced material is a thermoset resin. In the disclosed coating apparatus (2), a coating chamber (4) is provided with seal means (20) at a first wall (14) and seal means (22) and a second wall (16), preferably a second chamber (40) is provided with a similar seal means (44). The coating chamber is maintained in a filled condition with a liquid coating material via a circulating pump (48) and associated reservoirs (34, 36, etc.). Rollers (62, 64) maintain the pipe sections in correct positional relationship with the coating apparatus. During operation, the pipe sections pass through the coating chamber and the second chamber providing a uniformly thin coating of adhesive material to the outside diameter of the pipe while minimizing loss of the coating material and volatization of the solvent component of the coating material in its liquid state.

Apparatus for coating plastic pipe

A method is described for achieving full cure of a peroxide cured polyester resin in the presence of rubber, which method is based on the discovery that there is competition between the uncured resin and the rubber surface for the peroxide curing agent present adjacent to the rubber/resin interface. The method has several embodiments, including: (1) utilizing a low surface activity rubber, (2) deactivating the surface of a high surface activity rubber, (3) utilizing a peroxide material at the interface, (4) utilizing a material with which the rubber surface reacts preferentially, and (5) utilizing a 'rapid cure' for the polyester. Also described is a laminate of rubber and polyester resin formed by this method.

Method of curing polyester resin in the presence of rubber

A coupling comprises a body of fiber glass reinforced plastic which has a rubber sleeve embedded therein. The rubber sleeve is a one piece unit which includes specially shaped sealing gaskets on either end and has a rubber liner spanning the area between these sealing gaskets. This rubber sleeve is stretched onto a steel and plastic molding mandrel. This stretching places the rubber liner under tension which reduces the cross-sectional area of the liner and compensates for thermal expansion of the liner during curing. The mandrel/sleeve combination is rotated in order to wind a thermosetting resin impregnated fiber glass roving around the outer circumference of the mandrel/sleeve combination, thus embedding the sleeve in the fiber glass reinforced resin matrix. The thermosetting resin is cured at elevated temperatures, hardening into a rigid coupling with the embedded rubber sleeve integral therewith. Thereafter the hardened coupling is stripped from the steel and plastic mandrel and subjected to a further curing and finishing operation.

Method of making a coupling for rigid pressure pipe

Mandrel for making a coupling which coupling comprises a body of fiber glass reinforced plastic which has a rubber sleeve embedded therein. The rubber sleeve is a one piece unit which includes specially shaped sealing gaskets on either end and has a rubber liner spanning the area between these sealing gaskets. This rubber sleeve is stretched onto a steel and plastic molding mandrel. This stretching places the rubber liner under tension which reduces the cross-sectional area of the liner and compensates for thermal expansion of the liner during curing. The mandrel/sleeve combination is rotated in order to wind a thermosetting resin impregnated fiber glass roving around the outer circumference of the mandrel/sleeve combination, thus embedding the sleeve in the fiber glass reinforced resin matrix. The thermosetting resin is cured at elevated temperatures, hardening into a rigid coupling with the embedded rubber sleeve integral therewith. Thereafter the hardened coupling is stripped from the steel and plastic mandrel and subjected to a further curing and finishing operation.

Growing community of inventors

Littleton, CO, United States of America

Charles Lostak