Abstract: Disclosed is a coated welded can having a metal-exposed face inclusive of a seam covered with a coating, wherein the coating comprises at least one organic resin coating layer and at least one metal film, and at least the portion of the organic resin coating that adheres to the metal-exposed face is comprised of a copolymer of ethylene with a carbonyl group-containing, ethylenically unsaturated monomer or a blend containing this copolymer.In this coated welded can, the adhesion of the coating, the corrosion resistance of the seam and the appearance characteristics of the seam are highly improved. Furthermore, the coating of this welded can is not damaged by such processing as flanging, beading or double-seaming or when the welded can is subjected to the retort sterilization.

Abstract: Disclosed is a process for the preparation of metallic bottles which comprises lap-bonding circumferential open end portions of upper and lower members, each consisting of a formed cup of a metal, said process being characterized by using at least one thermoplastic resin adhesive having a water absorption of less than 2%, as measured at a temperature of 23.degree. C. and a relative humidity of 80%, and an elasticity contribution ratio [R(t).sub.t=1 ] of from 1.times.10.sup.-4 to 5.times.10.sup.-1, defined by the following formula:R(t).sub.t=1 =J(t).sub.rec,t=1 /J(t).sub.t=1wherein J(t).sub.t=1 represents a creep compliance at a time constant of 1 second when the adhesive is caused to creep at a temperature higher by 30.degree. C. than the melting point of the adhesive under a shear stress of 50 to 5,000 dyne/cm.sup.2, and J(t).sub.

Abstract: Disclosed is a process for the preparation of metal vessels, which comprises lap-bonding both the circumferential end portions of upper and lower members, each consisting of a seamless formed metal cup, through a layer of a hot adhesive interposed therebetween, wherein a high frequency induction heating coil is arranged so that the coil covers a part, smaller than the semicircle, of the circumferential portion to be formed into a seam, which circumferential portion consists of said end portions engaged with each other through the hot adhesive layer, electricity is applied to the heating coil to induce an eddy current passing through said end portions and the circumferential portion and the heating coil are rotated relatively to each other, whereby both the end portions are heated and a seam is formed by heat bonding.

Abstract: Disclosed is a side seam-coated welded can comprising a welded can body having a seam on the side face and a resin coating layer covering at least one surface side of the seam, wherein said coating layer comprises a thermosetting resin and a thermoplastic resin having a softening point of 50.degree. to 300.degree. C. as determined according to the ring and ball method, at a volume ratio ranging (A) from 95/5 to 25/75 or (B) from 20/80 to 1/99, and one of said two resins is present in the coating in the form of a continuous phase and at least a part of the other resin is present in the coating in the form of fine dispersed particles.This can is excellent in corrosion resistance and processability.

Abstract: Disclosed is a metal bottle adhesive for lap-bonding upper and lower members, each consisting of a cup-like formed article of a metal, on the peripheral ends thereof, said adhesive comprising at least one high-molecular-weight thermoplastic resin having a post crystallinity .DELTA.Wc, defined by the following formula, of less than 20%:.DELTA.Wc=Wc.sub.II -Wc.sub.Iwherein Wc.sub.I stands for the crystallinity (%) of the adhesive which has been molten at a temperature higher by 30.degree. than the softening point thereof and then naturally cooled at room temperature, determined according to the density method, and Wc.sub.II stands for the crystallinity of the adhesive which has then been immersed in water maintained at 70.degree. C. for 10 hours and then naturally cooled and dried at room temperature, determined according to the density method,a shear creep compliance J(t).sub.t=2 hrs of less than 10.sup.-4 cm.sup.2 /hyne at 90.degree. C.

Abstract: Disclosed is a side seam-coated welded can comprising a welded can body having a seam on the side face and a resin coating layer covering at least one surface side of the seam, wherein said coating layer comprises a thermosetting resin and a thermoplastic resin having a softening point of 50.degree. to 300.degree. C. as determined according to the ring and ball method, at a volume ratio ranging (A) from 95/5 to 25/75 or (B) from 20/80 to 1/99, and one of said two resins is present in the coating in the form of a continuous phase and at least a part of the other resin is present in the coating in the form of fine dispersed particles.This can is excellent in corrosion resistance and processability.

Abstract: In a welded metallic can wherein the can body is covered at its joint portion with a film of an organic polymeric resin, the improvement wherein said film is characterized by being a multilayered film having at least one layer of a film of an organic polymeric resin and at least one layer selected from the group consisting of metallic foils, evaporation coated metallic layers and electroplated metallic layers, and further characterized in that the layer disposed adjacent the welded can is the film of an organic polymeric resin.