Abstract: The invention discloses a method for counting foreign matter particles in a vinyl chloride resin powder comprising the steps of: forming an aqueous dispersion of the resin particles in a vessel having a transparent bottom, allowing the particles to settle forming a layer together with the foreign matter particles and viewing the layer of the deposited particles through the transparent bottom of the vessel to count the foreign matter particles in the deposited layer. The invention also provides an apparatus system for automatically counting foreign matter particles which comprises a vessel having a transparent bottom, a feed means for the resin powder, a water supply means, a stirrer means to form an aqueous dispersion in the vessel, a viewing means such as a CCD camera for recording the bottom image of the deposited layer through the transparent bottom of the vessel, and a control means for bringing the various parts of the system into a sequential linkage motion.

Abstract: The invention discloses a method for counting foreign matter particles in a vinyl chloride resin powder comprising the steps of: forming an aqueous dispersion of the resin particles in a vessel having a transparent bottom, allowing the particles to settle forming a layer together with the foreign matter particles and viewing the layer of the deposited particles through the transparent bottom of the vessel to count the foreign matter particles in the deposited layer. The invention also provides an apparatus system for automatically counting foreign matter particles which comprises a vessel having a transparent bottom, a feed means for the resin powder, a water supply means, a stirrer means to form an aqueous dispersion in the vessel, a viewing means such as a CCD camera for recording the bottom image of the deposited layer through the transparent bottom of the vessel, and a control means for bringing the various parts of the system into a sequential linkage motion.

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 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. A heating roll cleaning device brings cleaning rolls into sliding engagement with the heating rolls.

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 apparatus for automatically inspecting powdery products is disclosed having a plurality of automatic inspection devices each device processing, in parallel, a subdivision of a supplied sample of a powdery product. Each device is controlled by a corresponding terminal computer. To one terminal computer there are connected a device for reading sample information attached to the supplied powdery sample and a device for recording, on the sample subdivisions, information concerning conditions for inspection established by the terminal computer on the basis of the sample information read by the first reading device. To each of the other terminal computers there is connected a corresponding device for reading the information concerning conditions for inspection recorded on the subdivision of the sample. Each terminal computer controls the operation of the automatic inspection devices on the basis of the information concerning conditions for inspection read by each corresponding reading device.

Abstract: An apparatus for automatically determining the rate of plasticizer absorption of a powdery resin sample such as a vinyl chloride resin sample. The apparatus for automatically determining the rate of plasticizer absorption of a powdery resin sample is one in which the rate of plasticizer absorption is determined by treating, in a centrifugal separator 10, a powdery resin contained in an inspection container 2 together with an excess of a plasticizer, to remove from the powdery resin sample the excess plasticizer, and determining the amount of the plasticizer absorbed by and remaining in the powdery resin.

Abstract: An apparatus for automatically and continuously inspecting a powdery product for the presence of foreign substances as contaminants, which permits highly precise inspection of powdery products, comprises static charge eliminator 10 for eliminating electrostatic charges generated on a powdery sample supplied to the apparatus; hopper 41 for receiving and storing the powdery sample whose electrostatic charges have been eliminated and dropped onto the hopper through static charge eliminator 10; conveyor 42 for conveying the powdery sample, as a subject to be photographed, discharged from hopper 41 and spread over conveyor 42 in the form of a layer having a uniform thickness; and video camera 43 for photographing, over a predetermined visual field, the powdery sample on the subject-conveyor.

Abstract: An apparatus for supplying a solution of a powdery product as a specimen of viscosity measurement. The apparatus includes electronic discharge-weighing device (4) for determining the amount of the powdery sample in sample container (2), introduced into hopper (6) and discharged therefrom by vibration-generating drive (5); dissolution container (12) for receiving and dissolving the powdery sample from hopper (6); electronic balance (13)for weighing the powdery sample in container (12); supply source (14) for solvent into container (12); device (36) for heating and stirring the powdery sample and the solvent in container (12), and a control circuit for controlling the apparatus.

Abstract: An apparatus which permits continuous automatic determination of the bulk specific gravity of a powdery sample and highly precise measurement thereof. The apparatus comprises a robot 3 transporting a container 2 filled with a powdery sample; a funnel 4 provided with a damper, which receives the powdery sample discharged from the container 2; a damper-driving unit 5a for pulling out and pushing the damper 5; a sample sensor 7 for detecting the powdery sample dropped through the funnel 4 provided with a damper; a constant volume receiver 6 for receiving dropped through the funnel 4 provided with a damper; a scraping bar 8 for sliding the upper face of the constant volume receiver 6; a scraping bar-driving unit 8a for reciprocating the scraping bar 8; a constant volume receiver-conveying robot 21 transporting the constant volume receiver 6; an electronic balance 22 which determines the weight the powdery sample in the constant volume receiver 6; and a cleaner 23 for aspirating the weighed powdery sample.

Abstract: An efficient and reliable method and a system are proposed for detecting colored foreign particles in a white or light-colored powdery product such as a polyvinyl chloride resin with an object of product inspection and quality control. The method comprises the steps of eliminating static electricity from the powder, e.g., by spraying ethyl alcohol, continuously feeding the powder at a controlled rate on to a belt conveyor to form a uniform powder layer having a flat and even surface thereon, bringing the powder layer below a reflection-type laser-beam scanning detector projecting a laser beam with scanning and receiving the reflected beam and monitoring the output signals coming out of the detector.