Abstract: This invention relates to a novel ceramic mass or material and the use of same in the building materials industry for manufacturing bricks, ceramic stones, roofing tiles, large block and the like. A formable ceramic mass is prepared by mixing clay, a filler such as sand, calcium hydroxide, which can be in the form of slaked lime, and an aqueous solution of solidification activating agent. The formable mass is then shaped, e.g. by plastic moulding into uncured building elements which are in turn subjected to heat treatment, including a preliminary drying, a thermal treatment in a saturated vapour atmosphere, and a subsequent further heating and drying with a gradual lowering of moisture content. The preliminary drying is carried out at a temperature of 60.degree.-70.degree. C. to reduce the moisture content to 12-14%. The thermal treatment is performed at a temperature of 95.degree.-100.degree. C.

Abstract: The present invention provides a method for the semi-continuous production of microcellular foam articles. In a preferred embodiment, a roll of polymer sheet is provided with a gas channelling means interleaved between the layers of polymer. The roll is exposed to a non-reacting gas at elevated pressure for a period of time sufficient to achieve a desired concentration of gas within the polymer. The saturated polymer sheet is then separated from the gas channelling means and bubble nucleation and growth is initiated by heating the polymer sheet. After foaming, bubble nucleation and growth is quenched by cooling the foamed polymer sheet.

Abstract: The present invention provides a method of treating waste magnetic tapes characterized in that waste magnetic tapes such as video tapes and cassette tapes are cut or crushed to a length of 1 to 50 mm, and heated at a temperature of 100.degree. to 200.degree. C. so that they are contracted in the form of curl, and a method of manufacturing building material boards characterized in that waste magnetic tapes such as video tapes and cassette tapes are cut or crushed to a proper size, heated, and then, supplied with a binder and molded under pressure.

Abstract: A method and apparatus for forming twin sheet hollow plastic articles such as plastic pallets. A pair of plastic sheets is delivered directly from an extruder and loaded directly into a pair of clamping frames. The sheets are then moved in the clamping frames into an oven where the sheets are heated, whereafter the sheets are transferred to a hot forming station where the sheets are formed into a pallet. This pallet is then transferred to a cold forming station where further processing of the pallet takes place, and then to an unloading station where the finished pallet is removed and a new set of plastic sheets from the extruder is loaded into the clamping frames.

Abstract: A method for producing a bladder includes shaping a mass of crude rubber containing an oil component into a specified bladder shape by a mold; vulcanizing the shaped bladder in the mold; removing the vulcanized bladder from the mold; placing the vulcanized bladder in an environment having a high temperature to keep the vulcanized bladder in the high temperature for a specified time to remove the oil component from the vulcanized bladder; and coating an outer surface of the oil component-removed bladder with a separating agent layer.

Abstract: A method for producing a squeezable, thin-walled tube container of orientable plastic material in which the container includes a mouth portion, a squeezable thin-walled tubular container body having an open bottom-forming portion and a connecting portion located between the mouth portion and the container body and in which the mouth portion and the connecting portion consists of non-oriented material includes forcing the non-oriented material in the tube portion, by mechanical means, through a gap with a gap width at most amounting to approximately half the wall thickness of the material in the tube portion for orientation of the material passing through the gap, thereby obtaining substantially monoaxial orientation of the material which forms the container body and the open bottom-forming portion of the thin-walled squeezable tube container.

Abstract: A method for preparing an oxide superconductor article includes exposing the article after deformation of the article to a final heat treatment having the steps of (a) heating the article at a temperature sufficient to partially melt the article, such that a liquid phase co-exists with the desired oxide superconductor phase; and (b) cooling to and holding the article at a temperature sufficient to transform the liquid phase into the desired oxide superconductor, where no deformation occurs after the final heat treatment. The liquid phase of step (a) wets surfaces of a defect contained within the mixed phase, whereby upon transformation of the liquid in step (b) to the desired oxide superconductor, the defect is healed.

Abstract: A slurry is molded from ceramic fibers and/or microparticles to form a soft felt mat which is impregnated with a sol prior to drying the mat. A catalyst for the sol is caused to diffuse into the mat by exposing the mat to the catalyst and subjecting the mat to a soak time during which the catalyst diffuses into the mat and causes the sol to gel. The sol-gel binder forms bonds so that the mat is dimensionally stabilized. The mat is dried to produce ceramic insulation, ceramic insulation having a consistent microstructure and a fully gelled sol-gel binder through its entire thickness.

Abstract: A method of producing a silicon nitride ceramic component, comprising: grinding a silicon nitride sintered body comprising .alpha.--Si.sub.3 N.sub.4 having an average grain size of 0.5 .mu.m or smaller and .beta.'-sialon having an average grain size of 3 .mu.m or smaller in major axis and 1 .mu.m or smaller in minor axis into a predetermined size with a surface roughness of 1-7 .mu.m in ten-point mean roughness; heat treating the same at temperature range of 800.degree.-1200.degree. C. in the air; and standing it to allow to be cooled, whereby providing a residual stress in the ground surface before and after the heat treating as a residual compressive stress at a ratio of 1 or higher of the residual compressive stress after the heat treating to that before the heat treating (residual compressive stress after the heat treating/residual compressive stress before the heat treating), preferably 5 or more.

Abstract: A process for preparing a molten silicon melt from polycrystalline silicon for use in producing single crystal silicon by the Czochralski method is disclosed. Polycrystalline silicon is initially loaded into a Czochralski crucible, and melted to form a partially melted charge which includes both molten silicon and unmelted polycrystalline silicon. The molten silicon has an upper surface above which the unmelted polycrystalline silicon is partially exposed. Granular-polycrystalline silicon is fed onto the exposed unmelted polycrystalline silicon in a manner sufficient to allow the granular-polycrystalline silicon to dehydrogenate while it is resident on the surface of the unmelted polycrystalline silicon and before it becomes immersed in the molten silicon. The granular-polycrystalline silicon and the unmelted polycrystalline silicon are then fully melted to form a molten silicon melt.

Abstract: A polyester support prepared by the step of subjecting a polyester film to bulk rolling and heating the bulk rolled polyester film to a temperature of from 50.degree. C. to the glass transition point of said polyester film, or subjecting a polyester film to bulk rolling at a temperature of from 50.degree. C. to the glass transition point of said polyester film, resulting in the polyester support, wherein the glass transition point of said polyester film is 90.degree. to 200.degree. C., and wherein the step of bulk rolling has a start tension of 3 to 75 kg/m per unit width of the polyester film and an end tension of 3 to 75 kg/m per unit width of the polyester film.

Abstract: A process for producing a cylindrical product of a fiber reinforcement-thermoplastic resin composite, which involves disposing a mandrel on a flexible guide sheet which can be formed in the shape of the letter U around the mandrel, heating a fiber reinforcement-thermoplastic resin composite sheet to a temperature not lower than the distortion temperature of the resin and lower than the thermal degradation temperature of the resin of the composite, disposing an end of the heated composite sheet at a line of contact of the mandrel with the flexible guide sheet, then rolling the mandrel on the guide sheet while moving the guide sheet, the guide sheet forming a shape of the letter U around the mandrel being drawn into the concave portion of the letter U, and the composite sheet disposed between the mandrel and the guide sheet being in intimate contact with the mandrel and the guide sheet, to thereby wind the composite sheet on the mandrel, and then recovering a cylindrical product made from the wound composite sh

Abstract: A method for heat treating a rolled polyester support at a temperature lower than the glass transition temperature (Tg) is disclosed, wherein the polyester film is wound around a core to have a difference in roll diameter of 10% or less and then heat treated to render the film surface smooth. Further disclosed are a photographic polyester support which is subjected to heat treatment according to the above-described method, a silver halide photographic material which uses the above-described polyester support and a polyester support having a creak value of from 10 to 600 g.

Abstract: A process for preparing calcium silicate articles having a bulk density of 0.3 to 0.9 g/cm.sup.3 including the steps of mixing a major portion of calcium silicate and minor portions of anhydrous calcium aluminosilicate or its analogue, a reinforcing fiber and a polymer binder in water to give an aqueous slurry, molding the slurry into a desired for, and drying the molded slurry at 100.degree.-180.degree. C.

Abstract: A method is provided for forming a synthetic corrosion product layer on tube surfaces. The method utilizes two dissimilar materials with different coefficients of thermal expansion. An object tube and sacrificial tube are positioned one inside the other such that an annular region is created between the two tubes' surfaces. A slurry of synthetic corrosion products is injected into this annular region and the assembly is heat treated. This heat causes the tubes to expand, the inner tube with the higher coefficient of expansion expanding more than the outer tube, thereby creating internal pressures which consolidate the corrosion products and adhere the corrosion products to the tubing surfaces. The sacrificial tube may then be removed by conventional chemical etching or mechanical methods.

Abstract: Disclosed are methods for forming flexible, kink-resistant shaped fabric products which are particularly well adapted for protecting and/or covering elongate substrates, such as cables, conduits, wiring and the like. The shaped fabric products include a wall portion formed from a filamentary material which is resiliently set in a spiral configuration with respect to the longitudinal axis of the shaped product. The wall portion may also preferably formed with a filamentary material in the form of circumferential hoops substantially conforming in shape and size to the cross-sectional configuration of the shaped product.

Abstract: Solvent based film is produced in an endless belt casting apparatus (10) in which, within initial compartments (46-52), flows of gas are directed through transversely elongated inlet channels (85.sub.i) to contact a layer (36') of polymer and solvent supported by an endless belt (26) and flows of gas and solvent vapors are withdrawn from the vicinity of the layer by transversely elongated gas plenums (68); within subsequent compartments (54-62), flows of gas are directed through elongated inlet plenums (74) to contact the layer and flows of gas and solvent vapors are withdrawn through transversely elongated exhaust channels (85.sub.o); within all compartments along upper and lower spans of the belt, flows of gas are directed at the inner side (30) of the belt from transversely elongated gas plenums (70) and flows of gas are withdrawn though outlets (72); and within initial compartments (46-52), flows of cooling gas are directed at the edges of the inner side of the belt from cooling nozzles (146,148).

Abstract: A process for producing shaped bodies having thermally insulating properties and based on foamed alkali metal silicate particles includes silicon dioxide (SiO.sub.2) and alkali metal oxide (M.sub.2 O) (M is an alkali metal) in a molar ratio of from 2 to 4.5 (SiO.sub.2 :M.sub.2 O), and includes mixing 100 parts by weight of the foamed alkali metal silicate particles with an aqueous solution of monoaluminum phosphate (Al(H.sub.2 PO.sub.4).sub.3) in such a way that the molar ratio Si:Al in the mixture ranges from 1 to 60, placing the mixture in a preselected mold and compacting the mixture to from 20% to 80% of the original volume to give a shaped body and heating the shaped body to a temperature of from 100.degree. C. to 500.degree. C. until a chemical reaction bond between the alkali metal silicate particles and the monoaluminum phosphate has taken place. The shaped bodies so produced can be used as thermal and sound insulation material.

Abstract: The present invention relates to a process for forming robust, uniform, low molecular weight crystalline polyester particles. Such particles are useful for forming higher molecular weight polyesters, for example, by solid-state polymerization. Either conventionally-formed, essentially amorphous, non-molten polyester pellets at ambient temperatures or, alternatively, essentially amorphous molten polyester droplets, can be crystallized by rapidly subjecting the droplets or pellets to a thermal shock according to the process of the present invention.

Abstract: Disclosed herein is a method for controlling sapstain in wood and wood products comprising a) steam pasteurizing the wood or wood product followed by b) treating the wood or wood product with a biological control agent comprising one or more fungi selected from the class Hyphomycetes. Also disclosed are wood or wood products so treated.

Abstract: A biaxially oriented polyester film with excellent levelling property is produced by the inventive process which comprises: (a) melt-extruding and extending biaxially a polyester resin to shape it into a film; (b) treating the film thermally under a condition that formulae (1), (2) and (3) are satisfied; and (c) relaxing the film at a temperature range of Tm-60.degree. C. to Tm-140.degree. C. during the step (b):Tm-60.degree. C.<T1<Tm-10.degree. C. (1)50<T1-T2<100 (2)5<(T1-T2)/t<25 (3)wherein:Tm represents the melting point of the film (.degree.C.),T1 represents the initial temperature for the thermal treatment of the film (.degree.C.),T2 represents the terminal temperature for the thermal treatment of the film (.degree.C.), andt represents time for the thermal treatment (sec.).

Abstract: A process for treating a liquid crystal polymer film which includes the steps of: heating a film obtained by extrusion molding of a liquid crystal polymer, while contacting at least one surface of the film with a supporting body, to melt the polymer; cooling the melted polymer to form a solidified polymer layer; and separating the solidified polymer layer from the supporting body. The process readily provides liquid crystal polymer films having excellent resistance to intra-layer delamination and high tensile strength and elongation, as well as excellent resistance to abrasion, dimensional stability when heated, and resistance to folding.

Abstract: A process of imbibition drawing is improved by a pretreatment that preferably involves straining an undrawn filament bundle, or other elongated shaped undrawn or partially drawn synthetic polymeric article, while wetted with a cracking agent, before incorporating a desired additive by imbibition drawing, thereby increasing the imbibition capacity of the article, and improved articles incorporating such additives. Alternatively or in addition the pretreatment involves polarizing irradiation, before imbibition drawing.

Abstract: A process is provided for producing a plastic part that cannot be colonized by germs and/or fungi. The process includes the step of sequentially treating the plastic part with a swelling agent to provide a swollen plastic part, and then treating the swollen plastic part with a solution of a water-insoluble compound containing a bactericidal and/or fungicidal metal, where the solution has a bactericidally and/or fungicidally effective concentration of the insoluble compound.

Abstract: Composite coatings are provided having a variable thickness and a gradient coloration in the cross-web direction using a premetered extrusion coating process wherein a pigmented coating composition and a non-pigmented coating composition are simultaneously extruded onto a carrier film. The composite coatings are useful in preparing laminated structures such as automobile windshields with a colored gradient band.

Abstract: A material of a cycloolefin copolymer has a structure of alternating cycloolefin sequences, and has crystallinity in a temperature range from 210.degree. to 320.degree. C. The cycloolefin is prepared by polymerization of at least one polycyclic olefin, monocyclic and/or acyclic olefin with an open-chain olefin using a catalyst of a metallocene and an aluminoxane.

Abstract: A process of producing a styrene polymer molding which comprises heat treating a molding of a crystalline styrene polymer having mainly a syndiotactic configuration and having a crystallinity of at least 10% as determined by X-ray diffraction analysis. The heat treating is carried out at a temperature of 150.degree.to 250.degree. C. for 20 seconds to 90 minutes.

Abstract: Process for the production of concrete tiles by cutting a block of concrete mixture, characterized in that the block of mixture is subjected to a preliminary curing at room temperature for a duration of at least 24 hours or to a low-pressure steam treatment at a temperature <100.degree. C. until the compression strength reaches a value of at least 20 MPa, and to a second treatment with steam in an autoclave. The cement tiles thus obtained may be bonded to the floor using a normal setting layer of cement mortar, without giving rise to any problems of detachment.

Abstract: A continuous process for spinning and drawing polyamide filaments with the steps of melting a polyamide and spinning the filaments from the molten polyamide through a spinnerette, quenching the filaments, applying a yarn finish to the filaments, applying steam and heat to the filaments by a steam and heating unit which consists of a steam box and at least one heated godet, drawing the filaments, and optionally texturing the filaments. The resulting filaments have low shrinkage, high crystallinity, and a high percentage of alpha crystals.

Abstract: A method which includes enhancing effects upon treating the surface of a thermoplastic resin article by a surface-activating treatment such as corona discharge and the like or by a primer treatment and, thereby, improving coating performance, printability, adhesiveness and so forth of the thermoplastic resin article. The resin article is subjected to a surface-heating treatment which comprises heating only surface layer of the resin article up to a melting point of the thermoplastic resin or a higher temperature followed by cooling the surface layer, and then, subjected to the surface-activating treatment or primer coating.

Abstract: An improved process is provided for weaving an elastic stretch fabric. The fabric is woven with weft and/or warp yarns that are combination yarns which comprise a partially oriented synthetic crystalline polymer yarn combined with an elastomeric core. The fabric is then stretched, heat set and finished under particular conditions to provide the resultant fabric with an elastic stretch of 18 to 45% and dimensions about equal to the as-woven dimensions.

Abstract: Semicrystalline manufactured articles made of syndiotactic poly-p-methylstyrene (s-PpMS) in a crystalline form having a high melting point (225.degree. C.), and processes for the preparation thereof. Processes for preparing semicrystalline manufactured articles (semi-finished products, formed articles, fibers, films, etc.) made of s-PpMS in its different crystalline forms by exposure of amorphous manufactured articles to suitable solvents and by subsequent thermomechanical treatments.

Abstract: Process for producing a thermobonding product by extruding a thermofusible mass (1) and scraping it in molten state onto an incised cylinder (2) regulated as to temperature between about 120.degree. C. and 250.degree. C., calendaring the mass (1) with this cylinder (2) and an elastomeric silicone cylinder (3), while transferring it onto the elastomeric cylinder (3), which simultaneously effects a consolidation of the product (1) by cooling. The product is then transferred either onto a conveyor band (4) and brought by the conveyor, after passage through thermal treatment zones (5), to a roll winding-up station (6), or directly, in the form of continuous or discontinuous structure, onto a final utilization or transfer support (17). The invention is particularly applicable in the field of the textile industry, particularly for bonding or reinforcing.

Abstract: A process for upgrading low-quality wood including a softening stage, wherein one or more sections of low-quality wood are heated, in the presence of an aqueous medium and at a pressure which is at least the equilibrium pressure of the medium at the operating temperature, to a temperature in the range of from about 120.degree. C. to about 160.degree. C. and maintaining the temperature until the temperature difference between the center and the outer parts of the sections is less than about 20.degree. C., a dewatering stage and a curing stage.

Abstract: A continuous heat treating machine for synthetic fiber tow provides a method for maintaining pressure having excellent stability on maintaining the pressure inside of the pressure chamber while avoiding quality deterioration and while ensuring minimum leakage of steam for heating medium. The length and breadth dimensions of the exit pressure seal part are set to be narrower than those of the entrance pressure seal part. The method ensures minimum damage on heat treating fiber, gives minimum unit requirement of steam for heating medium, and offers a stable operation and uniform heat treatment.

Abstract: Polybenzazole fibers can be rapidly dried without undue fiber damage by exposing them to two or more set point temperatures with the temperatures being selected relative to the residual moisture content of the fiber. The residence time required for the fiber at each progressively higher temperature can be reduced if the fiber is always in full contact with the set point temperature of the drying equipment.

Abstract: This invention provides reinforced composite structures consisting essentially of a matrix and a dispersed phase, where the matrix is a hydrogel containing water and a solubilized vinyl alcohol homopolymer, the dispersed phase contains a plurality of uniformly distributed acicular regions consisting of fibrils formed from a highly oriented crystalline vinyl alcohol polymer, where the diameter of the said fibrils is less than 1 millimeter, the aspect ratio of the fibrils is from 2:1 to 1000:1, and where the composite is characterized by a gradual transition in the degree of crystallinity at the interfaces between the matrix and the fibrils.

Abstract: Improved polybenzoxazole fibers are made by a process for drying a wet, coagulated polybenzoxazole (PBO) fiber including the steps of:(a) drying the fiber at a temperature of no more than 300.degree. C. under a tension of at least about 1 gram per denier (gpd) until it retains no more than about 120 weight percent residual moisture content;(b) further drying the fiber at a temperature of no more than 300.degree. C., either with or without tension, until it contains no more than about 20 percent residual moisture content; and(c) heat-treating the fiber at a temperature of at least about 300.degree. C. under tension.

Abstract: Improved polybenzoxazole fibers are made by a process for finishing a spun and drawn dope fiber, which contains polybenzoxazole polymer and polyphosphoric acid, including the steps of:(a) coagulating the dope fiber in an aqueous coagulant;(b) washing the coagulated fiber with an aqueous washing fluid for less than 72 hours under conditions such that the fiber contains no more than 8,000 ppm residual phosphorus (1 ppm=1 part per million, by weight);(c) drying the fiber at a temperature of no more than 300.degree. C. until it retains no more than about 3 weight percent residual moisture; and(d) heat-treating the fiber at a temperature of at least about 300.degree. C. under tension.

Abstract: A bending process including both preliminary and following steps takes place in one apparatus. A plastic pipe (6) is heated to a temperature in which it can be plastically deformed. The heated pipe is thereafter shoved into a pipe-shaped bending channel (27) of a bending tool, with the bending tool comprising two dies (9,10), each respectively defining a groove (14,13) which together form the bending channel. Finally, a cooling agent is allowed to flow through the bent pipe which is still in the bending tool. The thusly cooled pipe is removed from the bending tool after the dies are separated from one another. The apparatus to bend the plastic pipe comprises heating, bending, and cooling stations (1,2,3). The heating station comprises two heating fixtures, and the cooling station comprises a supply line (21,22) with a coupling joint (20) which can be coupled to an end of the pipe.

Abstract: A process of molding a building panel which includes the steps of combining about 25 pounds of Portland Cement Type I, about 15 pounds of water at around 21.degree. Centigrade, added about 1 ounce of aluminum, calcium, magnesium, and silica, respectively, and about 12 ounces of synthetic fibers with about 0.1 ounce of ferro chloride in 40% solution by volume, and pouring the mixture into the lower portion of a mold to about 1/2 its depth and waiting for approximately 4 hours for the mixture to increase by about 100% of its original volume to fill the mold and thereafter stripping the mold from the form and placing it in a heated environment for curing for a period of approximately 24 hours and thereafter removing the panel from the heated environment.

Abstract: Fibers spun from polybenzazole dopes can quickly be washed to remove polyphosphoric acid by a combination of initially washing with an acidic liquid and second washing with a hot leaching fluid at at least about 60. The process can reach acceptable residual phosphorous levels (1500-2000 ppm) in as little as about 2 or 3 minutes.

Abstract: Apparatus for producing filling material includes guide structure wherein a tow of filling and binding fiber is continuously guided through a heating zone in which the binding fiber becomes fused to the filling fiber at least at the surface of the tow, the tow is then continuously guided through a cooling zone in which at least a surface-consolidated tow is formed, and the consolidated tow is then continuously guided into a heated cutting means and cut and fused into tufts.

Abstract: Material having improved characteristics for filling endodontically prepared root canals is obtained by heat treating gutta percha based material at a temperature in the range of 210.degree. F. to 310.degree. F. for a period of two to twenty-four hours, the time being decreased as the temperature is increased.

Abstract: A method of autoclaving porous piece-goods, by steam under pressure, wherein the autoclaving operation includes sequential phases of heating with steam, holding, and then relaxing the pressure and temperature, wherein the holding phase includes a drying process. In order to obtain as dry a product as possible with the smallest possible energy input, it is provided that a drying process is carried out within the holding phase in which the autoclave is heated more than to compensate for heat losses and to a temperature above the temperature of vaporization of the water so that the material is dried by controlled discharge of steam from the interior of the autoclave. The steam discharged from one or more autoclaves during the drying process is used to heat up at least partially an autoclave to be heated.

Abstract: The present invention provides a thermoplastic composition excellent in heat resistance and water resistance which comprises a thermoplastic saturated norbornene polymer which has a number-average molecular weight (Mn) of 50,000-500,000 and a weight-average molecular weight (Mw) of 100,000-2,000,000 which are measured by high performance liquid chromatography, and a molecular weight distribution (Mw/Mn) of 2.2 or more, and a volatile content of at most 0.3% by weight. The composition is suitable for optical materials, electroconductive composite materials and optical recording media.

Abstract: Process for preparing shaped bodies of thermoplastic polymers by means of extrusion, injection, or spin molding of granules having a length within the range of from 2 to 100 mm, obtained by cutting a continuous calendered filament constituted by a bundle of fibres impregnated with a thermoplastic polymer in powder form and coated with an outer sheath constituted by a thermoplastic polymer which is the same as, or different from, the polymer which constitutes said powder, and having a melting point equal to or higher than the powder polymer.

Abstract: A process for treating a film comprising a liquid crystal polymer capable of forming an optically anisotropic melt phase, which comprises passing the film between press rolls at a temperature in a range of from 80.degree. C. below the melting point of the liquid crystal polymer to 5.degree. C. below the same melting point and under a linear pressure of 20 to 400 kg/cm.

Abstract: The present invention relates to hydraulically bonded cement compositions and methods of manufacture. Hydraulically bonded cement compositions and methods of manufacture include materials prepared by manipulating under pressure powdered hydraulic cement compositions using known or novel powder packing, casting, or expanding techniques, such that air within the powdered hydraulic cement is successfully removed while the cement is formed into a self-supporting near net final position. Thereafter, the formed hydraulic cement article is hydrated without mechanical mixing of the cement and water.

Abstract: There are disclosed a styrenic resin molding having a high crystallinity and excellent in heat resistance, solvent resistance and transparency, and a process for producing the same. Specifically the present invention provides an orientable or thermoformable non-oriented styrenic resin molding having a crystallinity of 25% or more, a spherulite radius of 10 .mu.m or less and a haze of 5% or less and comprising a styrenic polymer having a high degree of syndiotactic configuration; a process for producing the above non-oriented molding; a transparent styrenic-resin molding having a crystallinity of 30% or more which is obtained by thermoforming or orienting the above non-oriented molding at an expansion ratio by area of 1.2 or more; and the process for producing the same.