摘要:
Nip rollers 11 and 12 each including a pair of upper and lower rollers are disposed on an upstream side and a downstream side with a portion to be cut of an optical film F located therebetween. In the nip roller 12, a center axis C of the upper roller 12b is displaced relative to a center axis L of the drive roller 12a in a direction away from the portion to be cut. Upon cutting of the polarizing film F, the upper rollers 11b and 12b are simultaneously moved downward, so that a timing at which the downstream nip roller 12 nips the polarizing film F is delayed. Further, the nip roller 12 pulls the polarizing film F in the direction away from the portion to be cut, so that tension is applied to the polarizing film F. In this state, the polarizing film F is cut by a laser device 10.
摘要:
Nip rollers 11 and 12 each including a pair of upper and lower rollers are disposed on an upstream side and a downstream side with a portion to be cut of an optical film F located therebetween. In the nip roller 12, a center axis C of the upper roller 12b is displaced relative to a center axis L of the drive roller 12a in a direction away from the portion to be cut. Upon cutting of the polarizing film F, the upper rollers 11b and 12b are simultaneously moved downward, so that a timing at which the downstream nip roller 12 nips the polarizing film F is delayed. Further, the nip roller 12 pulls the polarizing film F in the direction away from the portion to be cut, so that tension is applied to the polarizing film F. In this state, the polarizing film F is cut by a laser device 10.
摘要:
A suction table 9 is disposed at a cutting action position for a polarizing film F, and holding blocks 9a and 9b, which are different in height from each other, are disposed in proximity to each other along a transport direction on a surface of the suction table 9 to form a suction groove 14. Nip rollers 11 and 12 are disposed on front and rear sides of the suction table 9 to nip opposed ends of the polarizing film F. Further, the suction table 9 suction-holds the polarizing film F in a state that the polarizing film F is inclined with the suction groove 14 located below a portion to be cut. In this state, a laser device 10 scans the polarizing film F along the suction groove 14 to cut the polarizing film F in a width direction.
摘要:
A suction table 9 is disposed at a cutting action position for a polarizing film F, and holding blocks 9a and 9b, which are different in height from each other, are disposed in proximity to each other along a transport direction on a surface of the suction table 9 to form a suction groove 14. Nip rollers 11 and 12 are disposed on front and rear sides of the suction table 9 to nip opposed ends of the polarizing film F. Further, the suction table 9 suction-holds the polarizing film F in a state that the polarizing film F is inclined with the suction groove 14 located below a portion to be cut. In this state, a laser device 10 scans the polarizing film F along the suction groove 14 to cut the polarizing film F in a width direction.
摘要:
A method for producing a screw-top bottle-can and a screw-top bottle-can are provided so that a screw-thread can be formed without damaging an inner coating and a resealing operation can be improved. A shoulder part is formed by reducing a diameter of an opening part of a closed-end cylindrical body, a cylindrical part having an intermediate diameter between a major thread diameter and a minor thread diameter and a tapered part which is tapered from an upper end of the cylindrical part toward an opening-end part are formed above the shoulder part, and forming a screw-thread from the tapered part to the cylindrical part so as to form a starting part of the screw-thread at a middle part of the tapered part.
摘要:
In a bottle-shaped can manufacturing method and a bottle-shaped can, a necking process is performed on an opening portion of a cylindrical workpiece with a bottom several times to form a body, a shoulder, and a portion for forming a neck that is continuously connected to an upper end of the shoulder in the axial direction of the bottle-shaped can and extends upward, and a first convex is formed in at least one of a connection portion between the shoulder and the portion for forming the neck and a connection portion between the shoulder and the body. Then, the shoulder is pressed to the inside of the body while the first convex is recessed inward in the radial direction, thereby forming grooves in the shoulder.
摘要:
In a bottle-shaped can manufacturing method and a bottle-shaped can, a necking process is performed on an opening portion of a cylindrical workpiece with a bottom several times to form a body, a shoulder, and a portion for forming a neck that is continuously connected to an upper end of the shoulder in the axial direction of the bottle-shaped can and extends upward, and a first convex is formed in at least one of a connection portion between the shoulder and the portion for forming the neck and a connection portion between the shoulder and the body. Then, the shoulder is pressed to the inside of the body while the first convex is recessed inward in the radial direction, thereby forming grooves in the shoulder.
摘要:
A manufacturing apparatus for manufacturing a can having a can body including a dome section and an annular projection. The dome section is formed on a bottom of the can and is recessed inwardly of the can body. The annular projection is formed around a peripheral edge of the dome section so as to project outwardly in a direction of an axis of the can. A plurality of inner recesses are formed on an inner wall of the annular projection. The apparatus includes: an apparatus main body; a mandrel disposed on the apparatus main body for supporting the can body; a can bottom processing unit disposed on the apparatus main body so as to be relatively movable in the direction of the can axis with respect to the can bottom. The can bottom processing unit includes: a plurality of punch pawls having extreme ends which are disposed in a circumferential direction, which are movable in a radial direction, and which project toward the mandrel; a punch pawl expanding member which moves the extreme ends outwardly in the radial direction; and a dome support member which abuts the dome section from the inside of the punch pawls in the radial direction and supports the dome section. The apparatus produces a can having a reduced can bottom thickness, but still has a sufficient can strength without deformation of the can bottom and in which the phenomenon of bottom growth is suppressed.
摘要:
A biaxially oriented polyester film, (A) which is formed from polyethylene-2,6-naphthalenedicarboxylate containing 0.01 to 1% by weight of inert solid fine particles having an average particle size of 0.05 to 3 .mu.m, (B) which has a refractive index, in a film thickness direction, of at least 1.498, and (C) which has a Young's modulus, at least in one direction, of at least 700 kg/mm.sup.2 ; and a process for the production thereof. This film is useful as a magnetic recording medium, particularly as a base film excellent in abrasion resistance and tear resistance.
摘要:
The present invention lies in a process for modifying the surface of a molded article, which process comprises irradiating the surface of a molded article composed of an aromatic polymer or a polymer composition containing said aromatic polymer, with an ultraviolet laser beam having a wavelength of about 150 nm-380 nm at a fluence at least lower than the threshold to modify the surface as compared with the condition before the irradiation. The process makes it possible to modify the condition of the laser beam-irradiated surface portions of the molded article to, for example, a white color or black color, whereby the molded article can be endowed with functions and properties required in its use in various applications.