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1. WO2020113145 - BLOW-MOLDED PLASTIC STRUCTURES

Publication Number WO/2020/113145
Publication Date 04.06.2020
International Application No. PCT/US2019/063821
International Filing Date 28.11.2019
IPC
B29C 49/04 2006.01
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
02Combined blow-moulding and manufacture of the preform or the parison
04Extrusion blow-moulding
B29C 49/48 2006.01
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
42Component parts, details or accessories; Auxiliary operations
48Moulds
B29C 49/54 2006.01
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
42Component parts, details or accessories; Auxiliary operations
48Moulds
54for undercut articles
B29L 22/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
22Hollow articles
B29L 31/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
31Other particular articles
CPC
B29C 2049/542
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
42Component parts, details or accessories; Auxiliary operations
48Moulds
54for undercut articles
542having means to facilitate the removal of the blow moulded articles
B29C 49/04
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
02Combined blow-moulding and manufacture of the preform or the parison
04Extrusion blow-moulding
B29C 49/48
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
42Component parts, details or accessories; Auxiliary operations
48Moulds
B29C 49/54
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
42Component parts, details or accessories; Auxiliary operations
48Moulds
54for undercut articles
B29C 49/541
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
49Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
42Component parts, details or accessories; Auxiliary operations
48Moulds
54for undercut articles
541having a recessed undersurface
B29L 2022/007
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
2022Hollow articles
005having dividing walls, e.g. additional elements placed between object parts
007integrally moulded or formed
Applicants
  • LIFETIME PRODUCTS, INC. [US]/[US]
Inventors
  • MONSON, Charles
Agents
  • GILMORE, Richard, C.
  • BARBER, Daniel, R.
  • CALL, David, T.
  • BRAITHWAITE, Jared, J.
  • BENNS, Jonathan, M.
Priority Data
16/698,90127.11.2019US
62/772,59328.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BLOW-MOLDED PLASTIC STRUCTURES
(FR) STRUCTURES PLASTIQUES MOULÉES PAR SOUFFLAGE
Abstract
(EN)
A blow-molded plastic structure may include an inwardly extending portion with an undercut. The inwardly extending portion may be disposed in an outer surface of the blow-molded plastic structure and the undercut may be disposed in the inwardly extending portion. The structure may be formed by placing a tool in a mold, forming a parison of molten plastic, disposing the parison of molten plastic in the mold, closing the mold around the parison of molten plastic, inflating the parison, and creating an inwardly extending portion with an undercut with the tool during the blow-molding process. The tool used to create the undercut in a blow-molded plastic structure may include a base, one or more guides, and one or more fingers movable relative to the base between a molding position and a release position. The fingers may include an elongated body and an outwardly extending portion.
(FR)
L'invention concerne une structure plastique moulée par soufflage, qui peut comprendre une partie s'étendant vers l'intérieur, présentant une contre-dépouille. La partie s'étendant vers l'intérieur peut être disposée dans une surface extérieure de la structure plastique moulée par soufflage, et la contre-dépouille peut être disposée dans la partie s'étendant vers l'intérieur. La structure peut être formée par mise en place d'un outil dans un moule, par formation d'une paraison de plastique fondu, par disposition de la paraison de plastique fondu dans le moule, par fermeture du moule autour de la paraison de plastique fondu, par gonflement de la paraison, et par création d'une partie s'étendant vers l'intérieur présentant une contre-dépouille, à l'aide de l'outil lors de l'opération de moulage par soufflage. L'outil utilisé pour créer la contre-dépouille dans la structure plastique moulée par soufflage peut comprendre une base, un ou plusieurs guidages, et un ou plusieurs doigts pouvant se déplacer par rapport à la base entre une position de moulage et une position de démoulage. Les doigts peuvent comprendre un corps allongé et une partie s'étendant vers l'extérieur.
Also published as
Latest bibliographic data on file with the International Bureau