Hollow shaped molded article, hollow shaped molding process and hollow shaped molding device

A process for producing said hollow shaped molded article, said process comprising the steps of:

• injecting a molten resin into a main cavity, wherein said main cavity has an injection port which is provided with a floating core at a first end of said main cavity and a sub-cavity at a second end of said main cavity through an openable communication port;
• injecting a compressed fluid from said injection port to move said floating core toward said communication port;
• and
• discharging said resin into said sub-cavity through said communication port, including:
• charging a reinforced resin into said main cavity along an inner wall of said main cavity;
• charging a non-reinforced resin along a center of said main cavity;
• moving said floating core to discharge said non-reinforced resin positioned along said center of said main cavity into said sub-cavity, while leaving said non-reinforced resin which forms an inner layer on an inner wall of said reinforced resin which forms said outer layer;
• and
• moving said floating core into said sub-cavity through said communication port.

A process for producing a hollow shaped molded article, said process comprising the steps of:

• injecting a molten resin into a main cavity, wherein said main cavity has an injection port which is provided with a floating core at a first end of said main cavity and a sub-cavity at a second end of said main cavity through an openable communication port;
• injecting a compressed fluid from said injection port to move said floating core toward said communication port;
• and
• discharging said resin into said sub-cavity through said communication port, including:
• moving said floating core into said sub-cavity through said communication port, while controlling a moving speed of said floating core after starting to move said floating core.