摘要:
A multilayer compression-molded article produced by compression-molding a composite plastic material. The composite plastic material comprises a first synthetic resin and a second synthetic resin in which the first synthetic resin surrounds substantially the entire second synthetic resin. The compression-molded article comprises a first resin layer molded from the first synthetic resin and a second resin layer molded from the second synthetic resin in which the first resin layer surrounds substantially the entire second resin layer. The composite plastic material is obtained by an extrusion apparatus which intermittently extrudes the second synthetic resin via a subsidiary extrusion flow passage into a main extrusion flow passage in which the first synthetic resin flows.
摘要:
A tubular plastic container having a molecularly oriented sidewall portion is made by bringing the peripheral portion of a solid blank in engagement with the shoulder portion of a die, introducing the blank into a cavity of the die while compressing with a first and second plungers, such that in the former stage of the introduction, the speed is relatively low and the pressure is relatively high, and then the speed is increased at a controlled rate and the pressure is decreased, thereby forming a hollow molded piece, and then expanding the molded piece to bringing the sidewall portion thereof into contact with the inner surface of the cavity. In the similar manner a tubular plastic container having a sidewall portion formed with thick wall portions axially extending and having a relatively large wall thickness and a large curvature, and thin wall portions axially extending and having a relatively small wall thickness and a small curvature which are formed alternately in the circumferential direction, is made by using the second plunger having recesses corresponding to the thick wall portions and having open edge portions.
摘要:
A multilayer compression-molded article produced by compression-molding a composite plastic material. The composite plastic material comprises a first synthetic resin and a second synthetic resin in which the first synthetic resin surrounds substantially the entire second synthetic resin. The compression-molded article comprises a first resin layer molded from the first synthetic resin and a second resin layer molded from the second synthetic resin in which the first resin layer surrounds substantially the entire second resin layer. The composite plastic material is obtained by an extrusion apparatus which intermittently extrudes the second synthetic resin via a subsidiary extrusion flow passage into a main extrusion flow passage in which the first synthetic resin flows.
摘要:
A tubular plastic container having a molecularly oriented sidewall portion is made by bringing the peripheral portion of a solid blank in engagement with the shoulder portion of a die, introducing the blank into a cavity of the die while compressing with a first and second plungers, such that in the former stage of the introduction, the speed is relatively low and the pressure is relatively high, and then the speed is increased at a controlled rate and the pressure is decreased, thereby forming a hollow molded piece, and then expanding the molded piece to bringing the sidewall portion thereof into contact with the inner surface of the cavity.In the similar manner a tubular plastic container having a sidewall portion formed with thick wall portions axially extending and having a relatively large wall thickness and a large curvature, and thin wall portions axially extending and having a relatively small wall thickness and a small curvature which are formed alternately in the circumferential direction, is made by using the second plunger having recesses corresponding to the thick wall portions and having open edge portions.
摘要:
The peripheral portion of a flat, molecularly orientable material stock of substantially uniform thickness having a temperature below the upper limit of the molecularly orientable temperatures of the plastic material is clamped, and the central portion of the plastic material stock is introduced into a die cavity while compressing the central portion with an upper plunger and a lower plunger, thereby forming a hollow preform having a sidewall portion made from the plastic material which has been forced out from between the upper plunger and the lower plunger, while the sidewall portion is kept in contact with the side surface of the upper plunger kept at about molecularly orientable temperature. Thereafter, while the upper plunger is returning, a fluid under pressure is supplied into the hollow preform to expand radially the sidewall portion, so that the sidewall portion is brought into contact with the inner surface of the die cavity kept at a temperature below the lower limit of the molecularly orientable temperatures for cooling and solidifying. Thus, the sidewall portion of a plastic hollow article is formed from the sidewall portion of the hollow preform, and a plastic hollow article having a flange portion, the sidewall portion which is molecularly oriented, and a bottom wall portion is made.
摘要:
An image forming apparatus includes an interface, a reading unit, an internal storage, and a deletion control unit. The interface is configured to establish a connection with an external storage. The internal storage is configured to store the data read from the external storage. The deletion control unit is configured to delete the data stored in the internal storage on the basis of an operation related to releasing the connection with the external storage.
摘要:
The respective jobs of copying, printing, scanning, and faxing processed by an integrated application are unitarily divided into four job steps. A package of function modules 41A selectively used in the respective jobs is classified into four groups of input, create, edit, and output function modules 410 to 412 according to the division. A data format is unified into bitmap by a create function module 411A, and the bitmap data is processed by an edit function module 411B for pagination or aggregation, etc. In response to receiving setting information and a job code, a job controlling module 43A creates job step control blocks 440 to 442 and writes the information therein to create a job. Each of job step controlling (JSC) modules 450 to 452 starts a function module for each page, and after the completion thereof, creates a thread control block for the next downstream side JSC module.
摘要:
A work (W) with a part assembling surface on many faces is rotated by a work holding jig (10) so as to sequentially convert each of the part assembling surfaces to the upward horizontal attitude, a bolt is fastened from above vertically while gripping an assembly part (B) by a part gripping device (12), and this is repeated so that an assembling operation can be carried out smoothly and an assembly space can be saved.
摘要:
A separator comprises a central casing including an upper disk and a lower disk, both disks having a plurality of openings, and a plurality of columns extending between the upper and lower disks and in communication with the plurality of openings, an upper casing including a disk disposed in contact with the upper disk of the central casing and having a plurality of openings, and a plurality of columns extending upwardly from the upper surface of the disk and in communication with the plurality of columns of the central casing, a lower casing including a disk disposed in contact with the lower disk of the central casing and having a plurality of openings, and a plurality of columns extending downwardly from the lower surface of the disk and in communication with the plurality of columns of the central casing, and a plurality of receptacles disposed within the plurality of columns. The upper and lower casings are rotated so that the receptacles can be circulated through the columns.
摘要:
A resinous composition excellent in processability and gas permeation resistance, which comprises (A) 30 to 98 % by weight of a crystalline polyolefin, (B) 2 to 70 % by weight of a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 25 to 75 mole % and a degree of saponification of at least 93 %, and (C) 0.5 to 15 parts by weight, per 100 parts by weight of said polyolefin and ethylene-vinyl acetate copolymer saponified product, of a thermoplastic polymer containing a carbonyl group in the main or side chain thereof, and a molded structure formed therefrom, which has a specific multi-layer structure and a high gas permeation resistance.