Abstract: When kneading kneading materials that include raw rubber and carbon black in a closed-type rubber kneader, the extent of the kneading efficiency of the closed-type rubber kneader is evaluated in accordance with the magnitude of the evaluation index calculated from unit work/total amount of shear by calculating an evaluation index calculated by a calculation device based on a total amount of shear obtained by integrating the shear velocity applied to the kneading materials by a rotor that is being driven to rotate by the rotor drive unit of the kneader over the kneading time, and a unit work obtained by dividing the integrated power obtained by integrating the instantaneous power of the rotor drive unit over the kneading time by the mass of the kneading materials.

Abstract: The invention provides a blowing agent delivery system for introducing a blowing agent into a polymeric foam processing system. The delivery system is designed to discontinuously introduce blowing agent from a continuous source into polymeric material within an extruder. The system, thus, may improve control over blowing agent delivery in discontinuous polymer processing systems such as injection molding or blow molding. In some embodiments, the blowing agent delivery system selectively directs blowing agent flow from the source to the extruder barrel, or through a bypassing passageway. In this manner, blowing agent may be continuously supplied by the source but discontinuously injected into the extruder barrel. During use, the delivery system may cause blowing agent to flow through the bypassing passageway, for example, when the screw stops plasticating polymeric material.

Abstract: A sheet-testing apparatus including kneading rolls, a frame feeder, sheet applicator, foreign material detector, a frame with a light transparent window and a cutter for cutting a sheet. A sheet-testing sample-making apparatus has a cluster of kneading rolls, frame feeder, and sheet applicator. A sheet thickness detection apparatus outputs an electric signal to a memory. A kneading apparatus has a pair of heating rolls separated by a gap. The directions and speeds of rotations of the rolls are adjustable. A sensor detects the gap and a bank sensor detects the condition of a bank in the gap. The distance between the rolls, their temperatures, rotations, and speeds are automatically controlled. A pair of blades peel a sheet from the sheet-winding roll. Material dropped through the gap between the heating rolls is returned to a point above the gap. A cutting device has a length of wire sprung onto a rolled sheet to sever the sheet.

Abstract: An automatic device for making a flour strap comprises a mixing container communicating respectively with a flour container, a liquid container and a rolling container. The flour contained in the flour container and the liquid contained in the liquid container are introduced into the mixing container in which the flour and the liquid are mixed thoroughly to form a flour dough. The mixing container is in communication with the rolling container by means of an inlet through which the flour dough is transferred from the mixing container to the rolling container in which the flour dough is rolled and pressed repeatedly to become a flour strap, which is then carried away by a conveyor located under the rolling container.

Abstract: An apparatus for automatically kneading and stretching a mixture of ingredients used in the preparation of an article of food such as dough, so as to enable efficient and convenient preparation thereof, including a support, a frame mounted on the support, a pair of shafts rotatably journalled in the frame, one above the other, a pair of rollers, secured to the pair of shafts such that a space is formed between such rollers, means for driving the pair of shafts and the pair of rollers secured thereto so as to generate rotation thereof, and a pan, including a downwardly-inclined top surface on which the mixture of ingredients for the dough is positionable, which pan is positionable on top of the frame so as to feed such mixture of ingredients into the space between the pair of rollers which are driven by the driving means so as to pull the mixture of ingredients therethrough so as to automatically knead and stretch such mixture thereby.

Abstract: Plastics recovery, compounding and fabricating apparatus is disclosed utilizing a gear pump specially designed to include a media free space between the gear face and side walls with minimum sealing to improve volumetric pump efficiencies and provide pumping capacity insensitivity to viscosity over a wide range.