Abstract: In a glass plate working apparatus 1, a carrying-in position 3, a scribing position 4, a removing position 5, a grinding position 6, and a discharging position 7 are arranged at equal intervals linearly along a transporting direction, and a transporting device 8 for transporting glass plates 2 is additionally provided.

Abstract: In a manufacturing method of a transparent laminated sheet of the invention, the transparent laminated sheet includes a first base layer that is formed by a crystalline resin and a second base layer that is provided on at least one surface of the first base layer and is formed of a crystalline resin. The crystalline resin for the second base layer has a larger melt flow rate and a shorter relaxation time than the crystalline resin for the first base layer. The transparent laminated sheet is formed by rapidly cooling the crystalline resin for the first base layer and the crystalline resin for the second base layer immediately after being respectively extruded from dies in a melted state.

Abstract: A pillow packaging bag, a pillow type packaging body, a heat seal bar for pillow packaging machine, and a pillow packaging machine. The pillow packaging bag enabling the suppression of the occurrence of pin holes in a handling step and a transportation course after packaging comprises two lateral seal parts positioned roughly parallel with each other and a contents filling part held by the two lateral seal parts. Damping portions connected to the contents filling portion are formed near both side end parts of the lateral seal part from the border line thereof with the contents filling part near the center part of the lateral seal part toward the lateral seal part.

Abstract: The present invention relates to a transparent polypropylene based sheet and its manufacturing method capable of: providing proper properties as a transparent sheet such as tensile characteristic, impact resistance, rigidity and little generation of whitening when being folded as well as maintaining transparency; preventing generation of a gum-like material in molding; and realizing continuous production. A manufacturing machine 1 includes: an extruding unit 11 for melting and kneading a raw material and extruding the material into a sheet-like shape; a first cooling unit 12 for cooling the melted sheet-like resin composition 20a to obtain a sheet (sheet-like article) 20; a preheating unit 13 for reheating the sheet 20; a heat treatment unit 14 for heat-treating the sheet-like resin composition 20; and a second cooling unit 15 for cooling the heat-treated sheet 20. The raw material of a resulting sheet 21 contains a polypropylene resin (a) and a metallocene-type ethylene-?-olefin copolymer (b).

Abstract: A pillow packaging bag, a pillow type packaging body, a heat seal bar for pillow packaging machine, and a pillow packaging machine. The pillow packaging bag enabling the suppression of the occurrence of pin holes in a handling step and a transportation course after packaging comprises two lateral seal parts positioned roughly parallel with each other and a contents filling part held by the two lateral seal parts. Damping portions connected to the contents filling portion are formed near both side end parts of the lateral seal part from the border line thereof with the contents filling part near the center part of the lateral seal part toward the lateral seal part.

Abstract: A pillow packaging bag, a pillow type packaging body, a heat seal bar for pillow packaging machine, and a pillow packaging machine. The pillow packaging bag enabling the suppression of the occurrence of pin holes in a handling step and a transportation course after packaging comprises two lateral seal parts positioned roughly parallel with each other and a contents filling part held by the two lateral seal parts. Damping portions connected to the contents filling portion are formed near both side end parts of the lateral seal part from the border line thereof with the contents filling part near the center part of the lateral seal part toward the lateral seal part.

Abstract: The present invention relates to a transparent polypropylene based sheet and its manufacturing method capable of: providing proper properties as a transparent sheet such as tensile characteristic, impact resistance, rigidity and little generation of whitening when being folded as well as maintaining transparency; preventing generation of a gum-like material in molding; and realizing continuous production. A manufacturing machine 1 includes: an extruding unit 11 for melting and kneading a raw material and extruding the material into a sheet-like shape; a first cooling unit 12 for cooling the melted sheet-like resin composition 20a to obtain a sheet (sheet-like article) 20; a preheating unit 13 for reheating the sheet 20; a heat treatment unit 14 for heat-treating the sheet-like resin composition 20; and a second cooling unit 15 for cooling the heat-treated sheet 20. The raw material of a resulting sheet 21 contains a polypropylene resin (a) and a metallocene-type ethylene-?-olefin copolymer (b).

Abstract: An apparatus (1) for producing a transparent polypropylene sheet, which comprises a sheet formation means (11) for melt-kneading a resin composition comprising (A) 60 to 97 mass % of a polypropylene resin having an iostactic pentad proportion of 0.85 to 0.99 and a melt index of 2 to 10 g/10 min and (B) 40 to 3 mass % of a polypropylene resin having a racemic pentad proportion [rrrr/(1-mmmm)] of 0.15 to 0.50 and a melt index of 2 to 10 g/10 min and extruding it into s sheet, a first cooling means (12) for cooling a sheet (20) into a solid, a preheating means (13) for re-heating the cooled sheet (20), a heat treatment means (14) for heat-treating the sheet (20) into a sheet (21) and a second cooling means (15) for cooling the sheet (21) after heat treatment.

Abstract: A low crystallizability polypropylene sheet which has an average spherulite radius between 0.1 ?m and 4 ?m, an average number of spherulites of 600/mm2 or less in a sheet cross section, a solid density of 0.895 g/cm3 or less, a fusion enthalpy H of less than 90 J/g at the highest endothermic peak of the differential scanning calorimetry (DSC) curve, a degree of gloss of 90% or higher on at least one side and shows an exothermic peak of 1 J/g or higher at the low temperature side of said highest endothermic peak and a thickness of 50 ?m or more.

Abstract: To obtain a preprocessed sheet 14, molten resin 13 is cooled and, at the same time, a mirror surface is transferred to the resin by flatly pressing the resin between a first metallic endless belt 36 and a mirror surface of a third cooling roller 33. After the preprocessed sheet 14 is preheated, the sheet 14 is thermally stuck on an outer circumferential surface of a heating endless belt 57, and flatly pressed while heated between a fourth heating roller 54 and the heating endless belt 57, and then peeled off from the fourth heating roller 54 and then from the heating endless belt 57. Since the surface of the preprocessed sheet 14 is smooth, air is not involved between the heating endless belt 57 and the preprocessed sheet 14, and blister is not formed even in a high speed operation, so that the surface roughness is extremely low with the reduced haze, and high transparency as well as the high rigidity can be realized.

Abstract: An apparatus (1) for producing a transparent polypropylene sheet, which comprises a sheet formation means (11) for melt-kneading a resin composition comprising (A) 60 to 97 mass % of a polypropylene resin having an iostactic pentad proportion of 0.85 to 0.99 and a melt index of 2 to 10 g/10 min and (B) 40 to 3 mass % of a polypropylene resin having a racemic pentad proportion [rrrr/(1-mmmm)] of 0.15 to 0.50 and a melt index of 2 to 10 g/10 min and extruding it into s sheet, a first cooling means (12) for cooling a sheet (20) into a solid, a preheating means (13) for re-heating the cooled sheet (20), a heat treatment means (14) for heat-treating the sheet (20) into a sheet (21) and a second cooling means (15) for cooling the sheet (21) after heat treatment.

Abstract: A producing apparatus is used, in which a metallic endless belt having a mirror face is wound on and extends between a first cooling roller covered with an elastic member and a second cooling roller, and a third cooling roller having a mirror face on its surface and touching the first cooling roller through a molten thermoplastic resin sheet and the endless belt oriented therebetween to hold the molten thermoplastic resin sheet pressed with the endless belt. While the temperature of the third cooling roller and the endless belt directly touching the molten thermoplastic resin sheet is retained at less than 50° C.

Abstract: A low crystallizability polypropylene sheet which has an average spherulite radius between 0.1 &mgr;m and 4 &mgr;m, an average number of spherulites of 600/mm2 or less in a sheet cross section, a solid density of 0.895 g/cm3 or less, a fusion enthalpy H of less than 90 J/g at the highest endothermic peak of the differential scanning calorimetry (DSC) curve, a degree of gloss of 90% or higher on at least one side and shows an exothermic peak of 1 J/g or higher at the low temperature side of said highest endothermic peak and a thickness of 50 &mgr;m or more.

Abstract: A method of manufacturing a laminated thermoplastic resin sheet having an improved transparency without generating a wrinkle and an apparatus therefor are provided. The laminated thermoplastic resin sheet is manufactured by using an apparatus including an endless belt wound between a first cooling roll having an elastic material, a second cooling roll and a third cooling roll brought into contact with the first cooling roll through the belt, arranging a guide roll near the first roll so as to introduce a molten thermoplastic resin sheet between the first and third cooling rolls in such a manner as to be brought into contact with the belt and the third cooling roll substantially at the same time, and introducing a thermoplastic resin film between the belt and the third cooling roll via the guide roll.

Abstract: A producing apparatus is used, in which a metallic endless belt having a mirror face is wound on and extends between a first cooling roller covered with an elastic member and a second cooling roller, and a third cooling roller having a mirror face on its surface and touching the first cooling roller through a molten thermoplastic resin sheet and the endless belt oriented therebetween to hold the molten thermoplastic resin sheet pressed with the endless belt. While the temperature of the third cooling roller and the endless belt directly touching the molten thermoplastic resin sheet is retained at less than 50° C.

Abstract: A producing apparatus is used, in which a metallic endless belt having a mirror face is wound on and extends between a first cooling roller covered with an elastic member and a second cooling roller, and a third cooling roller having a mirror face on its surface and touching the first cooling roller through a molten thermoplastic resin sheet and the endless belt oriented therebetween to hold the molten thermoplastic resin sheet pressed with the endless belt. While the temperature of the third cooling roller and the endless belt directly touching the molten thermoplastic resin sheet is retained at less than 50° C.

Abstract: A method for producing a seamless metallic belt without a welded line and capable of being easily produced in high accuracy. A seamless belt material 21 having a defined length as a whole is placed on a core 11 and is held in a stretching state on the core 11 thermally expanded by heating, and further, in the above state, an outer circumference of the belt material 21 is cut to a predetermined thickness. The seamless metallic belt 20 is obtained by removing after the core 11 is cooled.

Abstract: Provided is a method for manufacturing a thermoplastic resin sheet bearing an embossed pattern, which employs a manufacturing apparatus having a first roll having an elastic material coated surface, a mirror-faced metal, endless belt, which is wound around the first roll and a second roll, and a third roll so provided that the metal, endless belt is wrapped partially around the third roll, which contacts the first roll via the metal, endless belt and which has an embossed pattern formed on one surface. According to this method, the thermoplastic resin sheet, partially melted, is fed between the metal, endless belt, which contacts the first roll, and the third roll. The elastic member is elastically deformed by application of a pressing force between the first and the third roll, while face pressure welding the thermoplastic sheet by using the first and the third rolls to transfer the embossed pattern and to cool the thermoplastic resin sheet. A surface temperature for the third roll of from 0.degree. C.

Abstract: A thermoplastic resin film is preheated as the temperature T is changed to at a temperature of Tg<T<m.p.-10.degree. C., and absolutely contacted with a belt by being pressed at a linear pressure of 9.8 N/cm-980.0 N/cm (Tg: glass transition temperature of the thermoplastic resin film, m.p.: melting point of the thermoplastic resin film). Next, the thermoplastic resin film is heated as the temperature T is changed to a temperature of m.p.-20.degree. C.<T<m.p.+20.degree. C. while being absolutely contacted with the belt, and successively, the thermoplastic resin film is cooled while being absolutely contacted with the belt, and then the thermoplastic resin film is peeled from the belt.

Abstract: Provided is a method for manufacturing a thermoplastic resin sheet bearing an embossed pattern, which employs a manufacturing apparatus having a first roll having an elastic material coated surface, a mirror-faced metal, endless belt, which is wound around the first roll and a second roll, and a third roll so provided that the metal, endless belt is wrapped partially around the third roll, which contacts the first roll via the metal, endless belt and which has an embossed pattern formed on one surface. According to this method, the thermoplastic resin sheet, partially melted, is fed between the metal, endless belt, which contacts the first roll, and the third roll. The elastic member is elastically deformed by application of a pressing force between the first and the third roll, while face pressure welding the thermoplastic sheet by using the first and the third rolls to transfer the embossed pattern and to cool the thermoplastic resin sheet. A surface temperature for the third roll of from 0° C.