PROCESS FOR PREPARATION OF METALLIC BOTTLES

摘要

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 DEG C. and a relative humidity of 80%, and an elasticity contribution ratio [R(t)t=1] of from 1x10-4 to 5x10-1, defined by the following formula: R(t)t=1=J(t)rec,t=1/J(t)t=1 wherein J(t)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 DEG C. than the melting point of the adhesive under a shear stress of 50 to 5,000 dyne/cm2, and J(t)rec,t=1 represents an equilibrium recovery creep compliance when the adhesive is caused to creep under the same conditions as described above and the adhesive is then let to recover, and containing in the main or side chain groups at a concentration of 10 to 1400 milliequivalents per 100 g of the adhesive.