Abstract: A polyester container furnished with a flange part having mechanical strength, transparency, and heat resistance through orientational crystallization, which polyester container exhibits low-temperature heat sealability, is provided by forming a projecting portion at an upper surface of the crystallized flange part, the projecting portion at at least a heat-sealing-face constituting region rendered amorphous or of low crystallinity. Further, in order to suppress the unevenness of the strength of sealing with a cover member and stably attain the high sealability, the projecting portion is deformed at the time of heat sealing with the cover member so as to form a resin piece protruding toward the interior of the container while being substantially appressed against the upper surface of an opening rim part. The formed resin piece couples with a sealant layer of the cover member.

Abstract: In a method for manufacturing a thermoplastic resin vessel, in which a cup-shaped vessel is thermally formed from a thermoplastic resin sheet by a plug, the method including the steps of: pre-forming a portion of the thermoplastic resin sheet corresponding to an orifice portion or a flange portion of the cup-shaped vessel; and clamping the pre-formed portion of the thermoplastic resin sheet to accomplish the forming. According to the manufacturing method, thickening of a vessel bottom part and warpage of the flange portion can be improved.

Abstract: A polyester container furnished with a flange part having mechanical strength, transparency, and heat resistance through orientational crystallization, which polyester container exhibits low-temperature heat sealability, is provided by forming a projecting portion at an upper surface of the crystallized flange part, the projecting portion at at least a heat-sealing-face constituting region rendered amorphous or of low crystallinity. Further, in order to suppress the unevenness of the strength of sealing with a cover member and stably attain the high sealability, the projecting portion is deformed at the time of heat sealing with the cover member so as to form a resin piece protruding toward the interior of the container while being substantially appressed against the upper surface of an opening rim part. The formed resin piece couples with a sealant layer of the cover member.

Abstract: In a method for manufacturing a thermoplastic resin vessel, in which a cup-shaped vessel is thermally formed from a thermoplastic resin sheet by a plug, the method including the steps of: pre-forming a portion of the thermoplastic resin sheet corresponding to an orifice portion or a flange portion of the cup-shaped vessel; and clamping the pre-formed portion of the thermoplastic resin sheet to accomplish the forming. According to the manufacturing method, thickening of a vessel bottom part and warpage of the flange portion can be improved.

Abstract: NO.sub.x is absorbed in an alkaline aqueous solution of a permanganate and/or a manganate and the manganese compounds are reduced to form the precipitate of manganese dioxide.The manganese dioxide is dispersed in an aqueous solution of sodium or potassium hydroxide having a concentration of higher than 20% and a gas containing NO.sub.x having a molar ratio of NO.sub.2 /NO.sub.x of higher than 0.55 is contacted with the dispersion in the presence of a permanganate and/or a manganate at higher than 40.degree. C, to convert manganese dioxide to the permanganate and/or the manganate.

Abstract: Fiber products of a blend of an acrylic fiber substantially free of acid dye sites with an acid dyeable fiber are printed with a dye paste containing a monosulfonic acid dye having an inorganicity/organicity ratio less than 4 to dye both fibers of the blend uniformly. As an alternative an additional acid dye outside the specific class designated may be used to augment the dyeing of the acid dyeable fiber.

Abstract: A process for printing acrylic fiber substantially free of acid dye sites with a printing paste containing a monosulfonic acid dye having an inorganicity/organicity ratio of less than about 4 and thereafter steaming the printed fiber to fix the dye is disclosed.

Abstract: The invention is concerned with printing fabrics containing (a) acrylic fibers and/or modacrylic fibers having acidic dyesites but free of basic dyesites and (b) cellulosic fibers with a printing paste containing (A) an acid dye containing a single sulfonic acid group and having an inorganicity/organicity ratio below 4 for dyeing the acrylic or modacrylic fibers and (B) a direct or reactive dye for dyeing the cellulosic fibers.

Abstract: In the printing of fiber assemblages containing acrylic fibers dyeable with cationic dyes and blend fibers dyeable with anionic dyes, there is disclosed a process for printing with a printing paste containing a cationic and a anionic dye which comprises preparing the printing paste so as to contain specific amounts of lignin sulfonic acid or a soluble salt thereof, printing the fiber assemblage with said paste, and thereafter steaming the printed assemblage to fix the dyes thereon.