Dynisco, Inc.

Other

Lear Corporation

University of Massachusetts

Robert A Malloy

Christopher P Grudzien, Jr

Dennis C Young

Stanley J Chlystek

Ivan Rios

James F Reilly

Amad Tayebi

Moshen G Kashi

Garrett Gardner

Christopher W Swan

A plasticating screw including a grating mixing section provided to enhance mixing of incompatible materials. The screw includes a mixing section including an inlet groove having a closed distal end, a discharge groove circumferentially spaced from the inlet groove, the discharge groove having a closed proximal end. Located between the inlet groove and the discharge groove is a land region is including at least one grating element that includes a plurality of grooves extending between the inlet groove and the discharge groove.

Plasticating screw

The present invention is directed at a synthetic lightweight aggregate composition comprising fly ash and a mixture of two or more polymer components. More specifically, the present invention is also directed at a lightweight concrete which cures to a hardened cementious composite comprising Portland cement, water in a weight ratio of between about 0.2 and 0.7 of the water to the Portland cement, synthetic lightweight aggregate in a weight ratio of between about 0.1 and 0.5 of the synthetic lightweight aggregate to the cement, wherein the synthetic lightweight aggregate comprises fly ash and two or more polymer components.

Fly ash/mixed plastic aggregate and products made therefrom

A polymeric blend formed from recycled carpet scrap and selected compatibilizing agents and/or a poly(ethylene-co-omylacetate) and the products produced from such blend.

Recycling of carpet scrap

An apparatus for strengthening weld lines in molded parts includes a mold body having a mold cavity formed within the mold body. A reciprocating pin extends along a longitudinal axis through the mold body. The reciprocating pin is adapted to reciprocate between a position flush with the inner surface of the mold cavity and a position slightly away from the mold cavity to displace material within the mold cavity and strengthen weld lines formed in the molded part.

Apparatus for strengthening weld lines in molded parts

A capillary rheometer apparatus includes a housing, a plunger, the housing having a reservoir for receiving the plunger in a polymer melt, and a mechanism for blocking flow of the melt out of the reservoir. A driving mechanism is included for driving the plunger longitudinally within the reservoir to move one end of the plunger in contact with the melt. A diaphragm, which is coupled to the one end of the plunger, deflects in response to melt pressure in the reservoir. A mechanism, responsive to diaphragm deflection, determines pressure of the melt. Another mechanism is included for determining the temperature of the melt and a further mechanism is included for indicating longitudinal movement of the plunger. From such determinations, the PVT characteristics and the apparent shear viscosity characteristics of the polymer melt can be obtained.

Capillary rheometer plunger pressure transducer and measurement technique

A capillary rheometer plunger having a liquid-filled capillary passage extending within the plunger is removably housed in a heater block holder for maintaining temperature stability and minimizing temperature induced errors. The plunger is placed in the holder during purging, cleaning, reloading and packing the capillary rheometer with the polymer under test. The holder includes an electrically heated holder member disposed within an aperture of an outer shield and is provided with an aperture in which the plunger is removably received for heating. A base supports the shell. A temperature sensor disposed in the shell controls the temperature of the holder member at the temperature of the polymer under test.

Heater block holder for a capillary rheometer plunger pressure transducer

A method is described for recovery of Compact Disks and other optical memory storage disks for potential subsequent uses and for recycling purposes. The method comprises the steps of holding the compact disk and application of a scraping action to the coating on the disk surface. An apparatus is also described for holding the disk and scraping the coating on the disk surface.

Recovered compact disk and a method and an apparatus for recovery thereof

A capillary rheometer including a plunger pressure transducer assembly which contains a liquid metal fill capillary passage therein. When the plunger is urged downward onto the melted polymer, a diaphragm at the end of the plunger senses the pressure within the melted polymer and transmits this pressure to the liquid metal fill. An additional diaphragm disposed in the opposite end of the plunger pressure transducer assembly senses this transmitted pressure within the liquid metal fill for an accurate indication of the pressure therein.

Growing community of inventors

Londonderry, NH, United States of America

Robert A Malloy