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Individual
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Individual
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Priority to ES201479ApriorityCriticalpatent/ES201479A3/en
Publication of ES201479A3publicationCriticalpatent/ES201479A3/en
Process for manufacturing paper bags of the bellows type characterized in that the assembly on the basis of which the box-shaped bag is manufactured is constituted by two sheets of rigid paper superimposed and joined together by means of a thermoplastic lacquer while the face of the assembly intended to constitute the inside of the bag is coated or impregnated with the same thermoplastic lacquer or a similar product. (Machine-translation by Google Translate, not legally binding)
ES201479A1952-01-171952-01-17A procedure for manufacturing paper bags (Machine-translation by Google Translate, not legally binding)
ExpiredES201479A3
(en)