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1. WO2022005924 - MOLD PART USED FOR INJECTION MOLDING OF THERMOPLASTIC RESIN AND INJECTION MOLDING METHOD OF THERMOPLASTIC RESIN

Publication Number WO/2022/005924
Publication Date 06.01.2022
International Application No. PCT/US2021/039296
International Filing Date 28.06.2021
IPC
B29C 33/30 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
30Mounting, exchanging or centering
B29C 33/42 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
42characterised by the shape of the moulding surface, e.g. ribs or grooves
B29C 33/44 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
44with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
B29C 45/76 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
76Measuring, controlling or regulating
B29C 45/40 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
40Removing or ejecting moulded articles
B29C 37/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
37Component parts, details, accessories or auxiliary operations, not covered by group B29C33/ or B29C35/144
Applicants
  • CHEMOURS-MITSUI FLUOROPRODUCTS CO., LTD [JP]/[JP]
Inventors
  • MATSUSHITA, Akifumi
  • ONDA, Teruaki
  • NISHIMURA, Takahiro
  • NISHIO, Takao
Agents
  • PALMER, Keith
Priority Data
2020-11104229.06.2020JP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MOLD PART USED FOR INJECTION MOLDING OF THERMOPLASTIC RESIN AND INJECTION MOLDING METHOD OF THERMOPLASTIC RESIN
(FR) PARTIE DE MOULE UTILISÉE POUR LE MOULAGE PAR INJECTION DE RÉSINE THERMOPLASTIQUE ET PROCÉDÉ DE MOULAGE PAR INJECTION DE RÉSINE THERMOPLASTIQUE
Abstract
(EN) Provided is a mold part which does not generate periodic irregularities (scale pattern) which appear in the direction orthogonal to the drawing direction (MD) of the mold part having a surface which slides parallel to a molded article when the molded article is removed from the mold after injection molding during injection molding of a thermoplastic resin (in particular, a thermoplastic fluoropolymer), an injection molding method using the same, and a molded article in which periodic irregularities (scale pattern) (which appear in the direction orthogonal to the drawing direction (MD) of the mold part) do not appear. The mold part is used for injection molding of a thermoplastic resin, and includes a surface which slides substantially parallel to a molded article when the molded article is removed from the mold after injection molding, wherein the average tilt angle in the sliding direction (MD) is 1.5° or higher.
(FR) L'invention concerne une partie de moule qui ne génère pas d'irrégularités périodiques (motif d'échelle) qui apparaissent dans la direction orthogonale à la direction d'étirage (MD) de la partie de moule ayant une surface qui coulisse parallèlement à un article moulé lorsque celui-ci est retiré du moule après moulage par injection pendant le moulage par injection d'une résine thermoplastique (en particulier, un fluoropolymère thermoplastique), un procédé de moulage par injection l'utilisant, et un article moulé dans lequel des irrégularités périodiques (motif d'échelle) (qui apparaissent dans la direction orthogonale à la direction d'étirage (MD) de la partie de moule) n'apparaissent pas. La partie de moule est utilisée pour le moulage par injection d'une résine thermoplastique, et comprend une surface qui coulisse sensiblement parallèlement à un article moulé lorsque celui-ci est retiré du moule après moulage par injection, l'angle d'inclinaison moyen dans la direction de coulissement (MD) étant de 1,5° ou plus.
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