APPARAT TIL FREMSTILLING AF DOBBELTVAEGGEDE TERMOPLASTROER MED BOELGEFORMET YDERVAEG OG GLAT INDERVAEG

• Main Authors: HEGLER W, HEGLER R-P
• Format: Patent
• Language: Danish
• Published: 05.10.1981
• Edition: 3
• Subjects: ACCESSORIES THEREFOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; MAKING GRANULES OR PREFORMS; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

An improvement in an apparatus for forming an outer corrugated tube wherein the corrugations of said tube abut an inner tube within said corrugated tube, said apparatus comprising means for forming an outer corrugated tube about a dye, means for forming said inner tube about a central mandrel within said corrugated tube, the improvement comprising means for urging an inner tube against the corrugations of said outer corrugated tube, said means comprising a presser floating mounted within said inner tube in facing relationship to said inner tube and bearing outward towards said inner tube.