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Application filed by Национальный Университет "Львовская Политехника"filedCriticalНациональный Университет "Львовская Политехника"
Priority to UAU200913714UpriorityCriticalpatent/UA50252U/en
Publication of UA50252UpublicationCriticalpatent/UA50252U/en
Blow-Moulding Or Thermoforming Of Plastics Or The Like
(AREA)
Laminated Bodies
(AREA)
Abstract
A flexible insert has two flanges between which membrane made of elastic air impermeable material is fixed. The flanges are arranged with different dimensions.