Abstract: A laminate has a core layer and a skin layer on either side of the core layer, wherein the skin layer is formed of a copolymer having a glass transition point of 85° C. or more and 115° C. or below and consisting of 2,6-naphthalene dicarboxylic acid or its lower alkyl ester, terephthalic acid or its lower alkyl ester and ethylene glycol or a polymer alloy having a glass transition point of 85° C. or more and 115° C. or below and consisting of polyethylene terephthalate and polyethylene-2,6-naphthalate. Thus, it can be used suitably as a packaging container for food and drink, such as jelly containers, which has flavor resistance and aroma retention sufficient not to be limited by types of flavor used for jelly or the like, excels in sealing properties with a lid body, can be hermetically sealed with an easy-peel transparent lid body, and is also superior in gas barrier properties, impact resistance, heat resistance, cost efficiency and transparency.

Abstract: A laminate has a core layer and a skin layer on either side of the core layer, wherein the skin layer is formed of a copolymer having a glass transition point of 85° C. or more and 115° C. or below and consisting of 2,6-naphthalene dicarboxylic acid or its lower alkyl ester, terephthalic acid or its lower alkyl ester and ethylene glycol or a polymer alloy having a glass transition point of 85° C. or more and 115° C. or below and consisting of polyethylene terephthalate and polyethylene-2,6-naphthalate. Thus, it can be used suitably as a packaging container for food and drink, such as jelly containers, which has flavor resistance and aroma retention sufficient not to be limited by types of flavor used for jelly or the like, excels in sealing properties with a lid body, can be hermetically sealed with an easy-peel transparent lid body, and is also superior in gas barrier properties, impact resistance, heat resistance, cost efficiency and transparency.

Abstract: A laminate has a core layer and a skin layer on either side of the core layer, wherein the skin layer is formed of a copolymer having a glass transition point of 85° C. or more and 115° C. or below and consisting of 2,6-naphthalene dicarboxylic acid or its lower alkyl ester, terephthalic acid or its lower alkyl ester and ethylene glycol or a polymer alloy having a glass transition point of 85° C. or more and 115° C. or below and consisting of polyethylene terephthalate and polyethylene-2,6-naphthalate. Thus, it can be used suitably as a packaging container for food and drink, such as jelly containers, which has flavor resistance and aroma retention sufficient not to be limited by types of flavor used for jelly or the like, excels in sealing properties with a lid body, can be hermetically sealed with an easy-peel transparent lid body, and is also superior in gas barrier properties, impact resistance, heat resistance, cost efficiency and transparency.

Abstract: A laminate has a core layer and a skin layer on either side of the core layer, wherein the skin layer is formed of a copolymer having a glass transition point of 85° C. or more and 115° C. or below and consisting of 2,6-naphthalene dicarboxylic acid or its lower alkyl ester, terephthalic acid or its lower alkyl ester and ethylene glycol or a polymer alloy having a glass transition point of 85° C. or more and 115° C. or below and consisting of polyethylene terephthalate and polyethylene-2,6-naphthalate. Thus, it can be used suitably as a packaging container for food and drink, such as jelly containers, which has flavor resistance and aroma retention sufficient not to be limited by types of flavor used for jelly or the like, excels in sealing properties with a lid body, can be hermetically sealed with an easy-peel transparent lid body, and is also superior in gas barrier properties, impact resistance, heat resistance, cost efficiency and transparency.

Abstract: The air (atmospheric air) is introduced from an atmospheric port, and it is throttled to give a minute amount by means of a bleed hole. The air is introduced into a vacuum chamber via a bleed passage, and it is introduced into a pressure regulator port via a feedback passage. Further, the air is allowed to pass through a space between a seat section and a seal member of a valve plug, and it is drawn toward a vacuum port. Thus, the seal member of the valve plug to be seated on the seat section is prevented from biting into the seat section.

Abstract: 1. An ester copolymer resin having a general formula ?I!.HO.paren open-st.COArCOORO.paren close-st..sub.n H ?I!wherein Ar represents 2,6-naphthalene group or phenylene group, R represents ethylene group or 1,4-cyclohexylene group, and n is a number of 100 to 1000 and a polymer alloy having a solubility parameter of 10.8 to 11.9 consisting essentialy of the ester copolymer and a polycarbonate resin are provided. The ester resin and the alloy are transparent and has a heat resistance and a hot water resistance (resistance to whitening) resisting sterilization of food, a good heat sealebility to aluminum closure, and recycling ability with PET resin.

Abstract: 1. An ester copolymer resin having a general formula ?I!. ##STR1## wherein Ar represents 2,6-naphthalene group or phenylene group, R represents ethylene group or 1,4-cyclohexylene group, and n is a number of 100 to 1000 and a polymer alloy having a solubility parameter of 10.8 to 11.9 consisting essentialy of the ester copolymer and a polycarbonate resin are provided. The ester resin and the alloy are transparent and has a beat resistance and a hot water resistance (resistance to whitening) resisting sterilization of food, a good heat sealability to aluminum closure, and recycling ability with PET resin.

Abstract: A bearing for the steering wheel shaft of a vehicle comprises a number of needle-like rollers, a retainer retaining the needle-like rollers, a cylindrical race member circumscribing the needle-like rollers, and an elastic cylindrical member fitted over said cylindrical race member. The cylindrical race member has a generally S-shaped split formed over the full axial length thereof and extending more or less obliquely with respect to the axis of the race.Unlike the prior art cylindrical race member having an obliquely extending straight slit, the cylindrical members, even if in a great number, are stored in a single container, they do not catch one another through the slits just like a puzzle ring.