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1. WO2005108034 - COMPRESSION MOLDING METHOD AND APPARATUS SUITABLE FOR MAKING DOOR FACINGS

Publication Number WO/2005/108034
Publication Date 17.11.2005
International Application No. PCT/US2005/014964
International Filing Date 29.04.2005
IPC
B27N 3/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
3Manufacture of substantially flat articles, e.g. boards, from particles or fibres
08Moulding or pressing
B29C 35/02 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
35Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
02Heating or curing, e.g. crosslinking or vulcanising
B29C 43/00 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
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
B29C 43/58 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
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
32Component parts, details or accessories; Auxiliary operations
58Measuring, controlling or regulating
B27D 3/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
DWORKING VENEER OR PLYWOOD
3Veneer presses; Press plates; Plywood presses
CPC
B29C 2043/5816
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
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
32Component parts, details or accessories; Auxiliary operations
58Measuring, controlling or regulating
5816temperature
B29C 35/0288
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
35Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
02Heating or curing, e.g. crosslinking or vulcanizing ; during moulding, e.g. in a mould
0288Controlling heating or curing of polymers during moulding, e.g. by measuring temperatures or properties of the polymer and regulating the process
B29C 43/003
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
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
003characterised by the choice of material
B29C 43/021
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
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
02of articles of definite length, i.e. discrete articles
021characterised by the shape of the surface
B29C 43/52
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
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
32Component parts, details or accessories; Auxiliary operations
52Heating or cooling
B29C 43/58
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
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
32Component parts, details or accessories; Auxiliary operations
58Measuring, controlling or regulating
Applicants
  • MASONITE CORPORATION [US]/[US] (AllExceptUS)
  • GUPTA, Manish [IN]/[US] (UsOnly)
Inventors
  • GUPTA, Manish
Agents
  • BERENATO, Joseph, W., III
Priority Data
60/566,07029.04.2004US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMPRESSION MOLDING METHOD AND APPARATUS SUITABLE FOR MAKING DOOR FACINGS
(FR) PROCEDE DE MOULAGE PAR COMPRESSION ET APPAREIL APPROPRIE PERMETTANT DE PRODUIRE DES PAREMENTS DE PORTE
Abstract
(EN)
A method for compression molding a thermoset article includes providing first and second movable mold dies providing a mold cavity. A thermosettable workpiece is placed on the first mold die. The workpiece is heated to a gel. At least one of the mold dies is moved toward the other to compress the workpiece between first and second die surfaces. A first mold clamp pressure is applied to the workpiece at a predetermined pressurization to shape the workpiece. The workpiece is cured into a thermoset article. An electrical property of the workpiece is measured as a function of time. A gelation period during which the electrical property changes in value until reaching a turning point corresponding to a gelation peak value is detected. A gelation peak time of the workpiece is determined, the gelation peak time coinciding with the gelation peak value.
(FR)
L'invention concerne un procédé de moulage par compression d'un article thermodurci qui consiste à fournir une première et une seconde matrice de moulage mobiles formant une cavité de moulage. Une pièce thermodurcissable est placée dans la première matrice de moulage et chauffée jusqu'à devenir un gel. Au moins l'une des matrices de moulage est approchée de l'autre afin de comprimer la pièce entre les première et seconde surfaces matricielles. Une première pression de serrage de moule est appliquée sur la pièce à une pression déterminée afin de mettre ladite pièce en forme. La pièce est durcie sous forme d'article thermodurci. On mesure une propriété électrique de la pièce sous forme de fonction temporelle électrique. On détecte une période de gélification pendant laquelle la propriété électrique change de valeur jusqu'à atteindre un point extrême correspondant à une valeur de gélification de crête. On détermine un temps de crête de gélification de la pièce, ce temps coïncidant avec la valeur de crête de gélification.
Also published as
Latest bibliographic data on file with the International Bureau