METHOD FOR THE MANUFACTURE OF PVC BOTTLES

1,147,118. Oriented vinyl chloride polymer articles. UNILEVER Ltd. 12 Dec., 1967 [13 Dec., 1966], No. 56324/67. Heading B5A. Hollow articles having bi-axial orientation may be produced from stabilized vinyl chloride polymerides of K-values 50-80, by making a preform e.g. by casting or injection moul...

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Bibliographische Detailangaben
Hauptverfasser:	HUFNAGEL W,DT, HAFNER W,DT
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS 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
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Zusammenfassung:	1,147,118. Oriented vinyl chloride polymer articles. UNILEVER Ltd. 12 Dec., 1967 [13 Dec., 1966], No. 56324/67. Heading B5A. Hollow articles having bi-axial orientation may be produced from stabilized vinyl chloride polymerides of K-values 50-80, by making a preform e.g. by casting or injection moulding, in the thermoplastic temperature range, cooling the preform to the thermoelastic temperature range i.e. 90-140 C., and deforming it by biaxial stretching at this temperature, preferably at a temperature at which the material has a stretching capacity of at least 225% or a maximum tensile strength of 200 kp/cm2. Bi-axial stretching may be the inflation of an extruded tube to form a bottle.