M&t Chemicals, Inc.

Atochem North America, Inc.

Elf Atochem North America, Inc.

Roger T Guthrie

Raymond W Barkalow

Edwin L Sukman

Justin L Hirshman

Stanley Littman

Philip H Ravenscroft

Rayond W Barkalow

Harold S Dick

Apparatus and method for coating hot glass bottles are improved by providing a controlled non-turbulent air supply directed downward across the coating material stream. The apparatus has a relocated blower for delivering process fluid (e.g. air) into an end of a plenum upper chamber, passing the air first through an permeable attenuator, then into a lower plenum chamber and finally through a diffuser plate to provide a uniform stream of process air directed downward across the coating-material stream into the finish region of the bottle. In the method, process air is blown to a plenum, through an angled attenuator plate with small holes to distribute the process air evenly and to avoid standing waves and regions of high or low air velocity. Several attenuator plates can be juxtaposed to permit removal of particulates by movement of the plates relative to each other. An iris or throttle valve after the blower can be used as an additional method of controlling the force and velocity of process air. A clean out is provided in the plenum through which the attenuator plates can be removed or cleaned. The method is improved by passing the air through an attenuator plate mounted at an angle to the flow of process fluid to provide a controlled non-turbulent air supply.

Permeable attenuating distributor for a glass container coating

Apparatus for the coating of glass containers has a series of vertical slots for applying coating chemicals to a hot glass jar with a minimal neck and shoulder area. An opposing horizontal slot exhausts spent coating material and reactants in a laminar flow. A center section provides a current of gas without chemicals parallel to the coating stream, and flowing with low velocity relative to the coating stream, but with high velocity relative to the extraneous turbulent and convection currents.

Method and means for controlled-profile coating of glass containers

Improved apparatus for coating glass containers provides a coating on the body for improved resistance to impact breakage and abrasion, while coating of threads or lugs at the open tops of the containers is limited to about one-tenth, or less, of the coating on the surfaces of the body, which surfaces are exposed to contact with other containers during handling. The apparatus provides a laminar flow of fluid which is free of coating-precursor chemical over the threads or lugs in a manner which minimizes turbulence and intermixing with the coating stream.

Center section for coating hood for glass containers

A coating hood for applying uniform protective coatings to glass containers, while minimizing the escape of noxious fumes from the hood to the ambient atmosphere, which includes a pair of spaced side walls having inclined end surfaces adjacent the entrance and exit ends to reduce the amount of stagnant ambient air thereat; coating air supply slots in the side walls for supplying process air to the containers; and finish air supply slots positioned at a height above the coating air supply slots for supplying coating free air.

Coating hood for applying coating compound on containers

A system is provided for delivering controlled quantities of a steady stream of a fluid to an application zone. The system includes a positive displacement pump for producing uniform pulses of small quantities of said fluid. The pump has a piston housing with an elongated bore extending from a first open end to a position proximate a second closed end and a pumping chamber region at said second end. The pumping chamber is provided with a pumping fluid inlet and a pumping fluid outlet. A reciprocating and rotating piston, is positioned for rotational and reciprocating motion within said elongated bore of said piston housing, from a first position in which said piston substantially occupies the space within said pumping chamber and displaces pumping fluid from said pumping chamber to a second position in which said piston is substantially removed from said pumping chamber and draws pumping fluid into said chamber. A barrier fluid inlet means is provided at a position which is between said elongated bore first end and said pumping chamber and adjacent said piston. Barrier fluid is delivered to the elongated bore at a pressure which is greater than the maximum fluid pressure within said pumping chamber, in order to produce a positive pressure differential which precludes migration of pumping fluid from said pumping chamber, along the piston, to said first open end. A mixing chamber is provided for mixing pumped fluid with air. The mixture is delivered to an application zone through an elongated restricted flow conduit, whereby said fluid and said air transform from a pulsed flow at said flow conduit first end to a steady flow at said second end.

Pump apparatus and system for containing and metering uniform pulses of

Additives can be permanently incorporated into melt spun fibers by cold drawing the fibers under conditions that generate a network of interconnecting microvoids within the fiber. The microvoids are formed in the presence of specified liquid or vapor media which fill the microvoid network. The temperature of the medium is below the effective glass transition temperature of the fibers containing said medium. The additive is either present in said medium or is applied to drawn fibers containing said medium.

Additive-containing fibers

Additives can be permanently incorporated into melt spun fibers by cold drawing the fibers under conditions that generate a network of interconnecting microvoids within the fiber. The microvoids are formed concurrently with the drawing of the fiber in a non-solvent liquid or vapor media, which media fills the microvoid network. The temperature of the medium is below the effective glass transition temperature of the fibers containing said medium. The additive is either present in said medium or is applied to drawn fibers containing said medium.

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Spartanburg, SC, United States of America

Roger T Guthrie