摘要:
A process for the preparation of a printed draw-formed body having a printed image on the side wall thereof by subjecting a prior-printed blank to draw-forming, which comprises converting an image of an original to be printed to a digital image element signal on a rectangular coordinate, converting the image element signal on the rectangular coordinate to an image signal or image signals on a corresponding conversion coordinate formed by developing the rectangular coordinate to an annular plane having an area substantially equal to the area of said rectangle, reading image element signals on the conversion coordinate in order of the coordinate, photo-electrically converting the read image element signals to a printing plate for the blank and printing the blank by using the formed printing plate. According to this process, since digital coordinate conversion is performed while compensating anisotropy of the elongation of the metal blank, an improved printing precision can be obtained in a draw-formed body.
摘要:
Disclosed is a draw-ironed metal vessel having a circumferential side seam, which is formed by lap-bonding of open end portions of upper and lower members, each consisting of a seamless molded metal cap, wherein the side wall of at least one of said upper and lower members is formed by draw-ironing a tin-plated steel plate at an ironing ratio of at least 20% and a spout having a diameter smaller than that of the side wall of the vessel is formed on the top wall of the upper member.
摘要:
A laminate obtained by laminating a resin composed chiefly of a polyester on a base material, said resin layer having a melt viscosity ratio (R) defined by the following formula (1),R=.eta..sub.12.2 /.eta..sub.1216 (1)wherein .eta..sub.12.2 is a melt viscosity at an extrusion temperature of the polyester at a shearing rate of 12.2 sec.sup.-1, and .eta..sub.1216 is a melt viscosity at an extrusion temperature of the polyester at a shearing rate of 1216 sec.sup.-1,of not smaller than 2.0 at a melt extrusion temperature of the polyester, and having .eta..sub.1216 of not smaller than 500 poises, and said resin layer being further quickly quenched after it is melt-extruded.
摘要翻译:将通过将主要由聚酯构成的树脂层压在基材上而得到的层压体,所述树脂层的熔融粘度比(R)由下式(1)定义,R = eti 12.2 / eta 1216(1)其中eta 12.2 是在12.2秒-1的剪切速率下在聚酯的挤出温度下的熔体粘度,eta 1216是在剪切速率为1216秒-1的聚酯的挤出温度下的熔体粘度不小于2.0 在聚酯的熔融挤出温度下,并且具有不小于500泊的eta 1216,并且所述树脂层在熔融挤出之后进一步快速淬火。
摘要:
A laminated metal sheet obtained by laminating a polyester film on a metal sheet, wherein the polyester film has a double refraction represented by the following relation, .DELTA.n=n.sub.m -n.sub.t wherein n.sub.m is a refractive index in the direction of a maximum orientation of the film, and n.sub.t is a refractive index in the direction of thickness of the film, which is higher on the side of the front surface of the polyester film than on the side of the metal sheet, and has a peak in the double refraction in a way of thickness from the side of the front surface toward the side of the metal sheet. A seamless can formed from such a laminated metal sheet exhibits excellent shock resistance, flavor-retaining property, corrosion resistance and like properties.
摘要:
A laminated sheet metal for the manufacture of containers is made from a sheet metal and, a layered thermoplastic resin film wherein the primer resin includes from about 50 to about 98 weight percent of polyamidodicarboxylic acid-modified epoxy resin, from about 2 to about 50 weight percent of curing agent resin, and from about 0.05 to about 10 weight percent of curing catalyst; also disclosed is a primer resin composition for use in the manufacture of laminated sheet metal for use in the manufacture of containers, made from about 50 to about 98 weight percent of polyamidodicarboxylic acid-modified epoxy resin, from about 2 to about 50 weight percent of curing agent resin, and from about 0.05 to about 10 weight percent of curing catalyst.
摘要:
Disclosed is a thickness-reduced deep-draw-formed can formed of a metal plate having an organic coating. In this can, at least the inner surface organic coating is composed of a crystalline thermoplastic resin, the thickness of the barrel wall is made smaller than the thickness of the bottom, the thermoplastic resin of the barrel wall is molecularly oriented mainly in the axial direction, and the roughness of the metal surface of the barrel wall is larger than that of the metal surface of the bottom. Since the organic coating is crystalline and is molecularly oriented, the coating can resist processing deformation when the thickness is reduced by deep-draw forming and the coating is not damaged by a tool or the like at all, and therefore, the barrier property to corrosive components and the heat resistance are prominently improved.
摘要:
Disclosed is a laminated metal plate for a drawn can, which comprises a laminate comprising a base metal, a layer of a film of a polyester composed mainly of ethylene terephthalate units and, if desried, an adhesive primer layer interposed between the base metal and the polyester film layer, wherein the X-ray diffraction intensity ratio, defined by the following formula (I), of the polyester film layer is in the range of from 0.5 to 15:R.sub.X =I.sub.A /I.sub.B (I)wherein R.sub.X represents the X-ray diffraction intensity ratio, I.sub.A represents the X-ray diffraction intensity by the diffraction plane parallel to the surface of the polyester film, which has a spacing of about 0.34 nm (CuK.alpha. X-ray diffraction angle is 24.degree. to 28.degree.), and I.sub.B represents the X-ray diffraction intensity by the diffraction plane parallel to the polyester film surface, which has a spacing of about 0.39 nm (CuK.alpha. X-ray diffraction angle is 21.5.degree. to 24.degree. ).and the in-plane anisotropy index of the crystal of the film layer is less than 30.When this laminated metal plate is subjected to the drawing, cracking or formation of pinholes is prevented, and the laminated metal plate shows excellent formability and corrosion resistance. An excellent drawn can is prepared from this laminated metal plate.
摘要翻译:公开了一种用于拉制罐的层压金属板,其包括层压体,其包含基体金属,主要由对苯二甲酸乙二醇酯单元组成的聚酯膜层,如果需要,则介于基体金属和基体金属之间的粘合底漆层 聚酯薄膜层,其中聚酯薄膜层由下式(I)定义的X射线衍射强度比在0.5至15的范围内:RX = IA / IB(I)其中RX表示X 射线衍射强度比,IA表示平行于聚酯膜的表面的衍射面的X射线衍射强度,其间隔为约0.34nm(CuKαX射线衍射角为24°至28°) ,IB表示与聚酯膜表面平行的衍射面的X射线衍射强度,其间隔为约0.39nm(CuKαX射线衍射角为21.5°〜24°)。 并且膜层的晶体的面内各向异性指数小于30.当该层压金属板经受拉伸时,防止了针孔的开裂或形成,并且层压金属板显示出优异的成形性和耐腐蚀性。 从该层压金属板制备出优良的拉伸罐。
摘要:
Disclosed is a packing can having a circumferential polyhedral wall formed on a can barrel, in which as compared with boundary ridgelines of structural unit faces of the polyhedral wall and crossing points of these boundary ridgelines, the structural unit faces are convex to the interior of the can and the structural unit faces are arranged so that adjacent rows of structural unit faces have a phase difference in the axial direction of the can. This packing can has a very high strength against deformation by application of the external pressure. Furthermore, in preparing this packing can, damage of a coating layer formed on a metal sheet used as the can barrel blank can be effectively prevented.
摘要:
A metal vessel has a metal bottomed cup-shaped lower member and a metal cup-shaped upper member, the upper and lower members being bonded together by a circumferential side seam. The upper member has a pouring mouth having a small diameter in the central portion thereof. The metal vessel is formed by lap-bonding the circumferential open ends of both the upper and lower members. The side wall of the upper member is formed by subjecting a primer-coated tin-plated steel sheet to draw forming at a side wall plastic forming ratio R of from 1.1 to 1.8; the side wall plastic forming ratio R being defined by the following formula: ##EQU1## wherein W stands for the weight (g) of the blank of the upper member, t stands for the thickness (cm) of the blank of the upper member at the side wall, .rho. stands for the density (g/cm.sup.3) of the blank of the upper member, D.sub.0 stands for the inner diameter (cm) of pouring mouth of the upper member, and D.sub.1 stands for the average inner diameter (cm) of the side wall.In the circumferential bonded portion, the side wall of the lower member is bonded to the side wall of the upper member through an organic adhesive interposed between a primer coating applied to the side wall of the lower member and a primer coating applied to the side wall of the upper member. The bonding strength and resistance to leakage of the lap-bonded circumferential side seam are improved.
摘要:
A laminate for can-making is disclosed, comprising a metal sheet and a thermoplastic resin layer provided on the surface of the metal sheet. The thermoplastic resin layer comprises a laminate film layer comprising a polyester-base resin intermediate layer (A) containing 10 wt % or more of coloring agent particles, a polyester-base resin outer surface layer (B) and a polyester-base resin backing layer (C). The outer surface layer (B) and the backing layer (C) each contains the coloring agent particles in an amount of 20 wt % or less and at the same time, in an amount less than that contained in the intermediate layer (A). Also disclosed is a process for making a can using the laminate.