Method of producing a hollow monobloc body by using a blowing process
AssigneeCreaplast
InventorJean Heaume
Life of this patent
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Abstract
A method of producing a hollow monobloc body in a mold which includes the steps of separating the shells of the mold from each other, interposing an element attached to a support between the shells, forming a parison between the shells and around the element, bringing the shells together to enclose the parison and the element, and producing by blowing a hollow monobloc body having an orifice therein which surrounds the element and has its interior wall spaced therefrom. The body is removed from the mold and a device inserted through an orifice in the body for welding the element to the interior wall of the body. The element is then welded to this interior wall.
Claims3
The method of producing a hollow monobloc body in a mold comprising a pair of separable shells, said method including the steps of:
- separating the shells of said mold from each other;
- interposing an element between said shells, said element being positioned by a support attached thereto;
- forming a parison between said shells and around said element;
- bringing said shells together to enclose said parison and said element;
- producing by blowing a hollow monobloc body having an orifice therein, said body surrounding said element and having its interior wall spaced therefrom, said element being maintained at a distance from walls of said parision before and during said blowing;
- removing said body from said mold;
- freeing said element from said support;
- and
- welding said element to the interior wall of said body using an electrode or sonotrode inserted through the orifice in said body.
Dependencies are inferred from the claim text.