摘要:
The present invention relates to a multistage process for producing hollow plastic articles, encompassing the following steps: a) producing a tubular plastic parison by means of extrusion or coextrusion; b) cutting open the plastic parison to produce two planar-surface parts by separating the plastic melt with the aid of flow dividers arranged in the interior of the blow molding head; c) molding the planar-surface parts in two mold halves to give half shells (7), where a removable intermediate frame (8) separates the mold halves from one another at least along the peripheral edges, so that the semifinished products/half shells are not in contact with one another; d) opening the mold halves and removing the intermediate frame (8); e) closing the mold halves, with the result that the half shells (7) come into contact with one another along a peripheral rim; and f) bonding the half shells (7) to give a hollow article.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Kunststoffhohlkörpern, welches die folgenden Schritte umfaßt:
a) Herstellen eines schlauchförmigen Kunststoffvorformlings in einer Blasform- oder Coextrusionsblasformanlage b) Aufschneiden des extrudierten oder coextrudierten Kunststoffvorformlings zu wenigstens einem flächigen Halbzeug c) Thermoformen der erhaltenen flächigen Halbzeuge zu Halbschalen d) Verschweißen der thermogeformten Halbschalen zu einem Hohlkörper.
摘要:
The present invention relates to a multistage process for producing hollow plastic articles, encompassing the following steps: a) producing a tubular plastic parison by means of extrusion or coextrusion; b) cutting open the plastic parison to produce two planar-surface parts by separating the plastic melt with the aid of flow dividers arranged in the interior of the blow molding head; c) molding the planar-surface parts in two mold halves to give half shells (7), where a removable intermediate frame (8) separates the mold halves from one another at least along the peripheral edges, so that the semifinished products/half shells are not in contact with one another; d) opening the mold halves and removing the intermediate frame (8); e) closing the mold halves, with the result that the half shells (7) come into contact with one another along a peripheral rim; and f) bonding the half shells (7) to give a hollow article.