摘要:
There is provided a multilayer hollow container having a laminar structure including a PGA resin and a co-laminated resin, such as an aromatic polyester resin, that takes advantage of the gas-barrier property of the PGA resin layer to the utmost and is suitable for bottles of a small volume required to exhibit a higher level of gas-barrier property. The multilayer hollow container has a co-stretched multilayer wall structure including a layer of a polyglycolic acid resin comprising at least 60 wt. % of recurring unit represented by a formula of —(O.CH2.CO)— . . . (1), and a layer of co-laminated resin comprising an aromatic polyester resin or an aliphatic polyester resin other than polyglycolic acid resin laminated on at least one surface of the polyglycolic acid resin layer, and satisfying a formula of: T×w/v≦0.8×10−3 . . . (2), wherein T represents an oxygen gas permeability (ml/container/day/atm), v represents a volume (ml) of the container, and w represents a content (wt. %) of the polyglycolic acid resin with respect to a whole weight of the container.
摘要:
A multilayer blow molded container having a layer structure that a polyglycolic acid layer is provided as a core layer, and thermoplastic polyester resin layers are arranged as inner and outer layers, wherein the melt viscosity x of a polyglycolic acid forming the polyglycolic acid layer is 300 to 900 Pa·s as measured at a temperature of 270° C. and a shear rate of 122 sec−1, the melt viscosity y of a thermoplastic polyester resin forming the thermoplastic polyester resin layers is 250 to 600 Pa·s as measured at a temperature of 290° C. and a shear rate of 122 sec−1, and a melt viscosity ratio x/y between both melt viscosities is 0.85 to 1.80, and a production process thereof.
摘要:
A multilayer blow molded container having a layer structure that a polyglycolic acid layer is provided as a core layer, and thermoplastic polyester resin layers are arranged as inner and outer layers, wherein the core layer formed of the polyglycolic acid layer is not present between the inner and outer layers in at least part of an opening end portion of the container, and the core layer formed of the polyglycolic acid layer is not present between the inner and outer layers in at least part of a bottom of the container, wherein the melt viscosity x of a polyglycolic acid forming the polyglycolic acid layer is 300 to 900 Pa·s as measured at a temperature of 270° C. and a shear rate of 122 sec−1, the melt viscosity y of a thermoplastic polyester resin forming the thermoplastic polyester resin layers is 250 to 600 Pa·s as measured at a temperature of 290° C. and a shear rate of 122 sec−1, and a melt viscosity ratio x/y between both melt viscosities is 0.85 to 1.80, and a production process thereof.
摘要:
There is provided a multilayer hollow container having a laminar structure including a PGA resin and a co-laminated resin, such as an aromatic polyester resin, that takes advantage of the gas-barrier property of the PGA resin layer to the utmost and is suitable for bottles of a small volume required to exhibit a higher level of gas-barrier property. The multilayer hollow container has a co-stretched multilayer wall structure including a layer of a polyglycolic acid resin comprising at least 60 wt. % of recurring unit represented by a formula of —(O.CH2.CO)— . . . (1), and a layer of co-laminated resin comprising an aromatic polyester resin or an aliphatic polyester resin other than polyglycolic acid resin laminated on at least one surface of the polyglycolic acid resin layer, and satisfying a formula of: T×w/v≦0.8×10−3 . . . (2), wherein T represents an oxygen gas permeability (ml/container/day/atm), v represents a volume (ml) of the container, and w represents a content (wt. %) of the polyglycolic acid resin with respect to a whole weight of the container.
摘要:
In a gas-barrier laminate having a layer structure of aromatic polyester resin/polyglycolic acid resin/aromatic polyester resin, a small amount of an aromatic polyester resin polymerized with a germanium compound (catalyst) is blended to the polyglycolic acid resin forming the core layer, thereby surface-roughening the polyglycolic acid resin layer. As a result, the peeling resistance between the polyglycolic acid resin/aromatic polyester resin layers is practically improved while maintaining a good gas-barrier property.
摘要:
Disclosed is a nonaqueous electrolyte secondary battery which comprises a flat wound electrode body wherein a positive electrode plate, which comprises a positive electrode collector foil and a positive electrode active material layer, and a negative electrode plate, which comprises a negative electrode collector foil and a negative electrode active material layer, are wound up with a separator being interposed therebetween. The positive electrode plate has a collector cover layer that has electrical insulation properties and covers at least a part of a facing collector portion in the longitudinal direction in a positive electrode collector portion. The collector cover layer covers at least an innermost semi-cylindrical facing collector portion which forms the innermost part of the facing collector portion and has a half-cylindrical shape.
摘要:
A spot welding tip detaching apparatus includes a movable plate, an engaging/stopping part, and a holder part. The movable plate has a guide hole through which a shaft set upright in a base plate is inserted with a gap being left between the guide hole and the shaft, rotatable relative to the base plate, and movable along the base plate within a range of the guide hole. The engaging/stopping part stops the movable plate at a predetermined position of the base plate by engagement in an engageable/disengageable manner. The holder part is provided integrally on the movable plate to hold a tip fitted in a spot welding gun. The holder part sandwiches the tip between two members of the holder part. According to movement of the tip along a predetermined route, the holder part rotates the tip, while holding the tip, to detach the tip from the spot welding gun.
摘要:
A driving force distribution device includes a sub transmission, a friction clutch, a rotary drive member fixed to an output shaft of an actuator, a friction clutch driving cam to change a pressing force of the friction clutch, a shift cam to shift the sub transmission by converting rotary motion of the actuator into linear motion, and a ratchet lever provided so that a shaft line thereof in a normal direction with respect to the outer surface of the rotary drive member is a rotation center. The ratchet lever is disengaged from the shift cam and is rotated when the rotary drive member is rotationally driven to one side from a predetermined position starting at control origin of the shift cam, and the ratchet lever is rotated in conjunction with the shift cam when the rotary drive member is rotationally driven in a direction opposite to the one side.
摘要:
A clamp 1 for a disk rotation driving device 3 has a centering hole 18 and a contact portion 17. The centering hole 18 is fitted to an outer circumference of a centering projection 19 of a hub 7 of the disk rotation driving device 3. A clamping screw 21 is screwed into an axial center of the hub 7 so that a fastening head 23 of the clamping screw 21 fastens the clamp 1 to the hub 7 and so that the contact portion 17 of the clamp 1 comes in contact with an information recordable magnetic disk 5 attached to the hub 7 and applies pressing load onto the disk 5 in a rotation axis direction. The clamp 1 includes a centering cylinder 13 bent in an axial direction. The centering cylinder 13 has a circumferential inner surface. The inner surface defines the centering hole 18. The rounded section 29 is provided along an edge of the centering hole 18 and has a radius smaller than the thickness of the centering cylinder 13. The fastening surface 25 is continuous to the rounded section 29.
摘要:
An apparatus of the invention comprises an operation inputting element for designating one of a plurality of functions; a function executing element for executing the function designated by the operating inputting element; a measuring element for measuring the time during which each of the functions has been executed by the function executing element; and a chargeable amount computing element for computing a chargeable amount based on the execution time measured by the measuring element regarding each of the functions.