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Publication of BE686460ApublicationCriticalpatent/BE686460A/xx
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
B29C53/56—Winding and joining, e.g. winding spirally
B29C53/58—Winding and joining, e.g. winding spirally helically
B29C53/76—Winding and joining, e.g. winding spirally helically about more than one axis, e.g. T-pieces, balls