Process for lubricating transported containers on conveyor belts

(57) The thermoplastic goods by which summary hot shaping was carried out can be protected from the crack under existence of a stress cracking promotion compound by forming the modeling goods containing a thermoplastic material and a liquefied hydrocarbon oil composite. We discovered that a stress cracking promoting agent prevented carrying out an interaction to the polymer structure of the container which received stress, and a liquefied hydrocarbon oil composite prevented or controlled the stress cracking in such a substance. The composite and composite of the present invention are effective especially when preventing the stress cracking in the drink container of polyethylene terephthalate between bottling work. In bottling work, a bottle is contacted to water, a non-water substance, for example, a cleaner, and lubricant. The interaction of water and the non-water substance may especially be carried out to polyester, and they may cause stress cracking in the container base here. How to carry out lubricous of a container, for example, a drink container, or the conveyor to the conveyor of a container or a container by with thin liquefied lubricant applying the layer of non-dripping nature substantially. This method offers many advantages as compared with use of conventional thin water lubricant.