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公开(公告)号：US11806914B2
公开(公告)日：2023-11-07
申请号：US17312165
申请日：2019-12-10
IPC分类号： B29C49/02 , B29B11/12 , B29C43/34 , B29C43/36 , B29C49/08 , B29C49/22 , B29K105/00 , B29L31/00
CPC分类号： B29C49/02 , B29B11/12 , B29C43/34 , B29C43/36 , B29C49/08 , B29C49/22 , B29C49/0685 , B29C2043/3411 , B29C2043/3488 , B29C2043/3602 , B29C2949/0771 , B29C2949/306 , B29C2949/3016 , B29K2105/253 , B29L2031/716
摘要： A method comprises the following steps:
providing a pre-processed element made of at least one polymeric material,
introducing the pre-processed element in a female mould part having a forming cavity,
shaping the pre-processed element between the female mould part and a male mould part, the female mould part and the male mould part being movable relative to one another along a moulding direction so as to form a concave object from the pre-processed element.
The forming cavity has a transversal dimension measured transversely relative to the moulding direction, the forming cavity further having a transition zone in which the transversal dimension passes from a larger value to a smaller value, the forming cavity further having a bottom.
During the introducing step, the pre-processed element is placed on the transition zone, so that the pre-processed element rests on the transition zone at a distance from the bottom of the forming cavity.-
公开(公告)号：US20230405909A1
公开(公告)日：2023-12-21
申请号：US18251634
申请日：2021-11-09
CPC分类号： B29C49/0685 , B29C43/36 , B29C49/6465 , B29C49/12 , B29C49/6427 , B29C43/52
摘要： A male element (100) of a mould (10) for the compression moulding of a parison comprises: a die (110), extending along a longitudinal axis (A) and including a body (112) having, inside it, a longitudinal cavity (113) 5 extending along the longitudinal axis (A) and, at one end of it, a socket (111) in communication with the longitudinal cavity (113); a stretching rod (120), slidably inserted in the longitudinal cavity (113) and including a terminal portion (121) at one end of it, the stretching rod (120) being movable relative to the die (110) between a retracted position, in which the 10 terminal portion (121) is housed inside the socket (111), and an extracted position, in which the terminal portion (121) is extracted from the socket (111).
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公开(公告)号：US20240017450A1
公开(公告)日：2024-01-18
申请号：US18252166
申请日：2021-11-09
CPC分类号： B29C43/52 , B29C43/02 , B29C43/36 , B29B11/12 , B29C49/0685 , B29L2031/712
摘要： A male element (100) of a mould (10) for the compression moulding of a parison comprises a die (110) and a ducting system (117), located inside the die (110) to allow a cooling fluid to flow in the male element (100), wherein the die (110) comprises: a body (112); a liner (116) fitted round the body (112) and having an outside surface, acting in conjunction with a female element (200) of the mould (10) to delimit a forming cavity (20), and an inside surface in contact with the outside surface of the body (112), wherein the ducting system (117) is formed between the body (112) and the liner (116).
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