Blow moulded containers where the mould is adapted to increase the crystallinity of the plastic at certain features
Номер патента: NZ563134A
Опубликовано: 24-12-2009
Автор(ы): Gregory A Trude, Paul Kelley
Принадлежит: Graham Packaging Co
Опубликовано: 24-12-2009
Автор(ы): Gregory A Trude, Paul Kelley
Принадлежит: Graham Packaging Co
Реферат: A blow moulded container (500), a method for producing the container and a mould used in that method is disclosed. The container (500) has with a base having a moveable region (502) and a bearing surface (504). The method includes the steps of receiving a parison, enclosing the parison with a mould that includes a cavity, inflating the parison in the mould (300) to form a blow moulded container (500) with the moveable region (502) at the cavity and repositioning the moveable region (502) before filling the blow moulded container (500). Before the repositioning, at least a first portion of the moveable region (502) of the blow moulded container is arranged outwardly below the bearing surface (504), and at least a second portion of the moveable region (502) of the blow moulded container is arranged inwardly above the bearing surface (504). At this time the second portion of the moveable region (502) arranged inwardly, above the bearing surface (504) is located at the center of the moveable region of the blow moulded container. Also the first portion of the moveable region (502), arranged outwardly below the bearing surface (504), surrounds the second portion of the moveable region. This process increases the crystallinity of the plastic in the base, which enables the container to be 'hot filled' without uncontrolled physical distortion of the container as it cools.
Device adaptable to the headstock of engine-lathes enabling the height of the machine geometric axis
Номер патента: US3625098A. Автор: Romeu Romi. Владелец: Romi Ind. Дата публикации: 1971-12-07.