摘要:
A can at least a part of which is made of an electrolytically chromated steel sheet, said steel sheet having such a surface that when it is degreased in acetone for 1 minute and analyzed by an Auger electron spectrometer at an incident electron accelerating voltage of 3 KeV, a modulation voltage of 3 V, a modulation frequency of 12 to 20 KHz and a degree of vacuum of at least 6.times.10.sup.-8 torr, the ratio of the peak-peak distance (O.sub.P-P) of KL.sub.2.3 L.sub.2.3 of oxygen to the base-peak distance (Cr.sub.B-P) of L.sub.3 M.sub.2.3 M.sub.4.5 of chromium in the resulting Auger electron spectrum satisfies the following relation:6.5.gtoreq.(O.sub.P-P)/(Cr.sub.B-P).gtoreq.1.5.
摘要:
Disclosed is a seam welded tinplate can having a side seam formed by welding, wherein the inner and outer surface portions of said side seam comprise an outermost layer formed of an oxide, which has a thickness of 50 to 400 A, and an intermediate layer formed mainly of an iron-tin alloy layer, which has a thickness corresponding to 5 to 100% of the thickness of the total tin layer, and a resin or resin composition containing a polar group selected from the group consisting of carbonyl, hydroxyl, ether and epoxy groups at a concentration of 10 to 2000 millimoles per 100 g of the resin is coated on at least one of said inner and outer surface portions of said side seam.
摘要:
Disclosed is a welded side-seamed can formed by welding a can blank comprising a steel plate substrate having, formed thereon, a coating layer consisting of a metallic chromium layer and a chromium oxide layer formed on the metallic chromium layer, wherein the so-formed side seam has an exposed steel plate layer consisting of a compact and dense steel oxide formed mainly of magnetite, which has a thickness of 50 to 800 A, especially 50 to 400 A, and a coating of a resin or resinous composition consisting of carbonyl, hydroxyl, ether and epoxy groups at a concentration of 10 to 2000 millimoles per 100 g of the resin is formed on at least one surface portion of said side seam through said steel oxide layer.
摘要:
A very thin coating layer having a thickness of the order of angstroms of a hydroxymethyl substituted phenol is applied to the surface of a metal material. The hydroxylmethyl substituted phenol, such as saligenin, is applied in the gaseous phase to the surface of the metal material maintained at a high temperature.By forming this ultra-thin coating layer, the heat bondability of a thermoplastic resin layer to the metal material can be effectively improved. This technique is advantageously used in various fields, for example, for production of bonded cans.
摘要:
Disclosed is a process for the preparation of welded cans, which comprises forming a blank comprised of a surface-treated steel plate into a cylinder and passing a lap portion of the formed cylinder between a pair of electrode rollers through an electrode wire to effect electric resistance welding, wherein said surface-treated steel plate comprises a layer of metallic tin or a tin-iron alloy formed on the steel plate substrate in an amount of 0.05 to 1.0 g/m.sup.2 as calculated as metallic tin and a hydrated chromium oxide layer formed on said tin layer in an amount of 0.005 to 0.05 g/m.sup.2 as calculated as metallic chromium and electric resistance welding is carried out in an inert atmosphere in the state where an electrode wire having a plating layer of tin or a tin alloy having a thickness of 0.1 to 20 .mu.m is kept in close contact with the surface of said surface-treated steel plate.In the inner and outer surface portions of the side seam of a welded can prepared according to this process, the thickness of the oxide layer is controlled below 400 .ANG. and the amount of tin in these inner and outer surface portions is at least 60% of the amount of tin in the starting surface-treated steel plate, and this welded can is excellent in the corrosion resistance, lacquer adhesion and appearance characteristics of the seam.
摘要翻译:公开了一种用于制备焊接罐的方法,其包括将由表面处理的钢板组成的坯料成形为圆柱体,并将成形的圆筒的搭接部分通过电极线通过一对电极辊之间以实现电阻 焊接,其中所述表面处理钢板包括金属锡或锡 - 铁合金层,其形成在钢板基材上,其量为0.05-1.0g / m 2,以金属锡计算,并且水合氧化铬层形成在 所述锡层以金属铬计算为0.005〜0.05g / m 2,并且在惰性气氛中进行电阻焊接,其中在具有锡或锡合金镀层的电极线的厚度为 0.1〜20μm与表面处理钢板的表面保持紧密接触。 在根据该方法制备的焊接罐的侧接缝的内表面和外表面部分中,氧化物层的厚度控制在400以下,并且这些内表面部分和外表面部分中的锡的量至少为 起始表面处理钢板中的锡量,该焊接罐的接缝的耐腐蚀性,漆附着性和外观特性优异。
摘要:
Disclosed is a bright welded seam can of tinplate having a side seam formed by welding, wherein each of the inner and outer surfaces of the side seam has an outermost surface layer having a thickness of 50 to 400 A and being composed of oxides and a subsequent intermediate layer composed of an iron-tin alloy, which has a thickness corresponding to 5 to 100% of the thickness of the whole tin layer in the tinplate blank, and wherein the inner and outer surfaces of the side seam have a reflectance corresponding to at least 60% of the reflectance of the tinplate.This bright welded seam can is excellent in the appearance of the seam, the corrosion resistance and the adhesion of the coating.
摘要:
Disclosed are a coating material for metal wherein a thin coating film without pinholes having excellent corrosion resistance, retort resistance, impact resistance, processing resistance, abrasion resistance, adhesiveness to a metal, flavor preservability for contents etc can be formed when applying on a metal plate or a metallic container, and a metallic container on which the coating material is applied. The coating material for metal includes thermoplastic resin particles having an average primary particle size of 10 to 800 nm obtained by cooling a solution of the thermoplastic resin. A process for preparing the coating material for metal comprises steps of (a) obtaining a solution wherein a thermoplastic resin is dissolved into an organic solvent, (b) obtaining a dispersion of particles of the thermoplastic resin having an average primary particle size of 10 to 800 nm by cooling the solution, (c) separating particles from the dispersion and (d) dispersing the separated particles in a solvent.
摘要:
A circuit module containing a ceramic carrier substrate to carry electronic parts, ceramic substrate pads provided on a surface of the ceramic carrier substrate, and a lid having a cavity and a bottom surface joined to the ceramic substrate pads with solder, the lid being a stepped lid having protrusions adjacent to the cavity, and dents adjacent to the cavity with the protrusions intervening therebetween, the protrusions being in contact with the ceramic carrier substrate with a prescribed distance to the ceramic substrate pads, and the dents being joined to the ceramic substrate pads with solder.
摘要:
Disclosed is a process for the preparation of welded cans, which comprises forming a blank comprised of a surface-treated steel plate into a cylinder and passing a lap portion of the formed cylinder between a pair of electrode rollers through an electrode wire to effect electric resistance welding, wherein said surface-treated steel plate comprises a layer of metallic tin or a tin-iron alloy formed on the steel plate substrate in an amount of 0.05 to 1.0 g/m.sup.2 as calculated as metallic tin and a hydrated chromium oxide layer formed on said tin layer in an amount of 0.005 to 0.05 g/m.sup.2 as calculated as metallic chromium and electric resistance welding is carried out in an inert atmosphere in the state where an electrode wire having a plating layer of tin or a tin alloy having a thickness of 0.1 to 20 .mu.m is kept in close contact with the surface of said surface-treated steel plate.In the inner and outer surface portions of the side seam of a welded can prepared according to this process, the thickness of the oxide layer is controlled below 400 A and the amount of tin in these inner and outer surface portions is at least 60% of the amount of tin in the starting surface-treated steel plate, and this welded can is excellent in the corrosion resistance, lacquer adhesion and appearance characteristics of the seam.
摘要翻译:公开了一种用于制备焊接罐的方法,其包括将由表面处理的钢板组成的坯料成形为圆柱体,并将成形的圆筒的搭接部分通过电极线通过一对电极辊之间以实现电阻 焊接,其中所述表面处理钢板包括金属锡或锡 - 铁合金层,其形成在钢板基材上,其量为0.05-1.0g / m 2,以金属锡计算,并且水合氧化铬层形成在 所述锡层以金属铬计算为0.005〜0.05g / m 2,并且在惰性气氛中进行电阻焊接,其中在具有锡或锡合金镀层的电极线的厚度为 0.1〜20μm与表面处理钢板的表面保持紧密接触。 在根据该方法制备的焊接罐的侧缝的内表面和外表面部分中,氧化物层的厚度被控制在400A以下,并且这些内表面部分和外表面部分中的锡的量为至少60% 起始表面处理钢板中的锡量,该焊接罐的接缝的耐腐蚀性,漆附着性和外观特性优异。
摘要:
A retortable bonded TFS can coated with an organic lacquer film in which the seaming portion of the can body is bonded with an organic adhesive, characterized in that (1) the amounts of the metallic chromium layer and the chromium oxide layer deposited are 70-130 mg/m.sup.2 and 5-30 mg/m.sup.2, respectively, as metallic chromium; the amount of alkali-soluble chromium in these layers after heating at 210.degree. C. for 10 minutes is not more than 12 mg/m.sup.2 and not more than 70% by weight of the amount of the deposited chromium oxide before heating; the area of thickness unevenness of the chromium oxide is not more than 10%; and the amount of metal exposed is not more than 30 mg/dm.sup.2, expressed as the amount of copper deposited (2) the organic lacquer film layer is a baked and cured film of a mixed lacquer composed of 70 to 85 parts by weight of an epichlorohydrin-bisphenol A type epoxy resin having a number average molecular weight of 2900 to 3750 and 30 to 15 parts by weight of a resol-type phenolic resin derived from a monohydric phenol, bisphenol A and an aldehyde; the phenolic resin has such a molecular weight distribution that the proportion of a high-molecular-weight portion having 3 or more rings is 60 to 70% by weight and the proportion of a low-molecular-weight portion having 2 or less rings is 40 to 30% by weight; and the baked and cured film contains 83 to 87 parts by weight of the epoxy resin and 17 to 13 parts by weight of the phenolic resin, and (3) the adhesive is a linear polyamide adhesive.