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Priority to DD19253576ApriorityCriticalpatent/DD125338A5/xx
Publication of DD125338A5publicationCriticalpatent/DD125338A5/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
B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
B29C67/004—Closing perforations or small holes, e.g. using additional moulding material