Half shell

The invention relates to a method for producing half shells of hollow bodies, in which a tool having a first tool half (1) forming a mould is used, comprising the following steps:-applying a preheated plastic sheet (2) to the first tool half (1),-sucking or pressing the plastic sheet (2) at least in some regions onto the first tool half (1) by means of a negative pressure or pressure, before the plastic sheet (2) is sucked or pressed onto the first tool half (1), the plastic sheet (2) is blown away or sucked away from the first tool half (1) by pressure or negative pressure at least in some regions in order to pre-stretch the material of the plastic sheet (2) at least in some regions. 本发明涉及一种用于生产中空体的半壳的方法，其中使用具有形成模具的第一工具半部(1)的工具，所述方法包括以下步骤：-将预热的塑料片(2)施加到第一工具半部(1)，-至少在某些区域通过负压或压力将塑料片(2)抽吸或压到第一工具半部(1)上，-在塑料片(2)被抽吸或压到第一工具半部(1)上之前，至少在某些区域通过压力或负压从第一工具半部(1)吹走或吸走塑料片(2)，以便至少在某些区域预拉伸塑料片(2)的材料。