Method for manufacturing a package

摘要

For the purpose of manufacturing a package, an entirety is provided by means of injection molding, the entirety including a plastic tray (10) having an open side and a ring-shaped plastic cover rim (20) which is located at the open side of the tray (10), at a circumferential rim of the tray (10), and which surrounds that circumferential rim. The cover rim (20) is connected to the tray (10) by means of a relatively thin plastic film, wherein the cover rim (20) and the tray (10) are detached from each other by forcing a limited mutual movement of the cover rim (20) and the tray (10). Furthermore, a piece of cover foil (40) is provided and connected to at least the cover rim (20). Preferably, the cover rim (20) and the tray (10) are adapted to be capable of getting into engagement with each other by means of a snap connection after they do no longer form an integral entirety with each other.

主权项

1. Method for manufacturing a package, wherein an entirety is provided through injection moulding, the entirety including a plastic tray having a bottom, a standing wall and an open side, and a ring-shaped plastic cover rim which is located at the open side of the tray, at a circumferential rim of the tray, and which surrounds that circumferential rim, and which is connected to the tray through a relatively thin plastic film, wherein the injection moulding involves applying a injection mould with cavities for forming the tray and the cover rim, which communicate with each other through a narrow cavity for forming the relatively thin film, and supplying plastic to the mould for filling the cavities of the mould, wherein the entirety of the tray and the cover rim is released from the mould after injection moulding and is allowed to cool down to a sufficient extent for detaching the cover rim and the tray from each other in a following step which involves moving the cover rim downwardly with respect to the tray, wherein the relatively thin film between the cover rim and the tray gets completely broken, after which the downward movement of the cover rim with respect to the tray is stopped, and wherein a piece of cover foil is provided and is connected to at least the cover rim, during the downward movement of the cover rim with respect to the tray or after detachment of the cover rim from the tray.