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HEAD MOLDING [13 records]

Record 1 2016-05-24

English

Subject field(s)
  • Construction Finishing
DEF

A moulding located above an opening, a window or a door.

French

Domaine(s)
  • Finitions (Construction)
DEF

Moulure située au-dessus d'une ouverture, d'une fenêtre ou d'une porte.

Spanish

Save record 1

Record 2 2015-07-14

English

Subject field(s)
  • Plastics Manufacturing
CONT

The development of reaction injection molding(RIM) allowed the rapid molding of liquid materials. In these processes, cold or warm, two highly reactive, low-molecular-weight, low-viscosity resin systems are first injected into a mixing head and from there into a heated mold, where the reaction to a solid is completed.

OBS

Reaction injection molding, originally known as "reaction casting."

Key term(s)
  • reaction injection moulding

French

Domaine(s)
  • Plasturgie
DEF

Procédé de mise en forme de matériaux synthétiques polymériques à partir d'au moins deux composés chimiques liquides, réagissant très rapidement, et qui sont mélangés intimement sous haute pression et à contre-courant.

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
DEF

Proceso de inyección por moldeo en el cual multicomponentes reactivos, con o sin rellenos, se mezclan por un choque de alta presión inmediatamente antes de ser inyectados en un molde cerrado.

Save record 2

Record 3 2012-02-02

English

Subject field(s)
  • Plastics Manufacturing
DEF

A moulding process in which catalysed resin is injected into a closed mould already containing the pre-formed reinforcement.

CONT

Resin transfer molding(RTM)... uses a closed mold, in two or more parts, usually made of glass-reinforced polymers or light metal alloys, with injection points and vents to allow air to escape. Reinforcement is cut to shape and placed in the mold, together with any inserts or fittings. The mold is closed and a low viscosity thermosetting resin(usually polyester) is injected under low pressure through a mixing head in which hardener is blended with the resin.

CONT

Resin transfer molding is increasingly used for large fiber-reinforced polymer components. Shapes can be complex. Ribs, bosses, and inserts are possible. Foam panels can be insert molded to reduce component weight.

OBS

If a vacuum is used in resin transfer molding, the term used is "vacuum assisted resin transfer molding" (VARTM).

OBS

RIM: The acronym RIM is often confused with Reaction Injection Molding ...

OBS

[According to one source]: resin transfer molding (RTM): the technically correct and most widely accepted name in the U.S; resin injection molding (RIM): a designation used in Europe.

Key term(s)
  • resin injection moulding

French

Domaine(s)
  • Plasturgie
DEF

Procédé de moulage consistant à injecter sous faible pression une résine thermodurcissable dans un moule où un renfort fibreux a été préalablement disposé.

CONT

Des développements importants ont eu lieu dans la technologie dite de moulage par transfert de résine («resin transfer molding», RTM) au cours des dernières années [...] Dans cette technique le renfort fibreux est positionné dans le moule et la résine injectée à basse pression (pompée) dans le moule refermé.

OBS

Avec la technologie VARTM [moulage par transfert de résine sous vide] on applique un vide pour débarrasser le moule de l'air qu'il contient et entraîner la résine, alors qu'avec la technologie RTM, on injecte la résine dans le moule sous pression.

OBS

moulage par transfer de résine; MTR : terme, abréviation et définition publiés au Journal officiel de la République française le 16 octobre 2011.

Spanish

Save record 3

Record 4 2004-10-13

English

Subject field(s)
  • Plastics Manufacturing
CONT

Thermoset injection molding is similar to thermoplastic injection molding except that uncured thermoset resins are mixed, injected, and held in the mold until cured.

OBS

injection molding : a method of manufacture(typically involving wood heads and face inserts) in which the material(ABS, epoxy, graphite, etc.) comprising the head is heated to a liquid state and injected under pressure into a mold.

French

Domaine(s)
  • Plasturgie
CONT

Grâce à MPI [Moldflow Plastics Insight - logiciel de simulation de l'optimisation du procédé de moulage de Moldflow Corporation], la simulation d'autres procédés complexes de moulage des thermoplastiques est également possible : l'injection par le gaz, la co-injection, l'injection-compression, les procédés de moulage réactif dont le moulage par injection des thermodurcissables, le moulage par injection et réaction (procédé RIM) et le surmoulage des puces électroniques.

OBS

moulage par injection : moulage d'une matière par injection sous pression à partir d'un cylindre chauffé à travers une buse (canal, entrée) dans la cavité d'un moule fermé.

Spanish

Save record 4

Record 5 1999-10-28

English

Subject field(s)
  • Waterproofing (Construction)
  • Doors, Windows and Openings (Building Elements)
DEF

The projecting molding over the head of an arch over a window or door opening, whether inside or outside.

DEF

Hood-mould. A projecting moulding to throw off the rain, on the face of a wall, above an arch, doorway, or window; ...

OBS

Hood-mould ... can be called "dripstone" or "label."

OBS

The term "hoodmold" and its variants seem to apply more specifically to a molding over an arched opening or over an arch over an opening.

Key term(s)
  • hoodmold

French

Domaine(s)
  • Étanchéité (Construction)
  • Ouvertures (Éléments du bâtiment)
DEF

Moulure droite, disposée en saillie au sommet d'un ensemble décoratif, qu'elle préserve de la pluie grâce à une petite rainure appelée «coupe-larme», destinée à arrêter les filets d'eau et à les faire tomber directement sur le sol.

OBS

Le larmier est le membre le plus saillant de la corniche. La face du larmier est droite, mais il est creusé en dessous d'une sorte de canal qui règne sur toute sa longueur. C'est ce canal qui a fait donner à la moulure entière le nom sous lequel on le désigne, car il empêche les eaux de pluie amenées par le toit de couler le long du mur de l'édifice [...] Par analogie, on donne encore le nom de larmier : 1. à toute saillie qui est hors de l'aplomb d'une muraille, et qui a pour objet d'empêcher que l'eau ne découle le long du mur; 2. à la pièce de bois qu'on met en saillie au bas d'un châssis de croisée ou de porte, pour empêcher l'eau de pénétrer à l'intérieur.

Spanish

Save record 5

Record 6 1998-07-15

English

Subject field(s)
  • Plastics Manufacturing
CONT

The accumulator head is considered a subcategory of intermittent extrusion blow molding. It is the combination of an extrusion head with a first in/first out tubular ram melt accumulator.

CONT

Blow-molded Volkswagen fuel tank made of high molecular weight polyethylene. Equipment is Krupp-Kautex Model KB250-S120 with 120 mm extruder and 75 kg accumulator head.

CONT

Melt from the extruder enters the accumulator head from the side and flows around a mandrel; ...

French

Domaine(s)
  • Plasturgie
CONT

[...] en extrusion discontinue de paraison, on utilise des têtes à accumulation et des têtes à variation d'épaisseur de paraison [...]

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
Save record 6

Record 7 1998-07-15

English

Subject field(s)
  • Plastics Manufacturing
CONT

The extrusion head used in blow molding is one of three basic styles : the spider or axial flow head, the side feed or radial flow head, and the accumulator head.... The side feed or radial flow head is a design most often used for polyethylene. Melt enters the head from the side, divides around the mandrel, and rewelds. As the melt moves downward, it enters the pressure ring area, creating a tremendous back pressure that helps ensure the resin reweld. The head is used for its simplicity and ruggedness, but has the disadvantage of relatively long color changes.

French

Domaine(s)
  • Plasturgie
Key term(s)
  • tête d'équerre pour polyéthylène

Spanish

Save record 7

Record 8 1998-07-15

English

Subject field(s)
  • Plastics Manufacturing
CONT

The parison is extruded from the parison head into the open mold; ...

CONT

Continuous extrusion blow molding with parison transfer. The transport arm cuts the extruded parison from the die head and lowers it into the waiting mold.

French

Domaine(s)
  • Plasturgie

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
Save record 8

Record 9 1998-07-15

English

Subject field(s)
  • Plastics Manufacturing
CONT

The extrusion head used in blow molding is one of three basic styles : the spider or axial flow head, the side feed or radial flow head, and the accumulator head. In the simplest form of the spider or axial flow head, a central torpedo is positioned in the melt flow path supported generally by two spider legs. The smooth and direct path with little or no place for material to hang up and degrade makes this head ideal for PVC resin. Cross-sectional areas of the melt flow path from the extruder, over the torpedo, and over the spider legs are carefully balanced to ensure an even and consistent pressure and flow.

French

Domaine(s)
  • Plasturgie

Spanish

Save record 9

Record 10 1997-11-25

English

Subject field(s)
  • Hair Styling
CONT

Sebastian Hair Product. Molding Mud. Creates moist, playful shapes and styles, reforms and reshapes all day, allows for sculpting and molding, provides a new texture of hold, emollient rich and shampoo soluble, contains natural and synthetic fibers to bond hair, and can be used with a cool or hot blow dryer, for volume or close-to-the head looks. [From a publicity pamphlet.))

French

Domaine(s)
  • Coiffure
OBS

Terme utilisé par la compagnie Sebastian pour désigner son produit.

Spanish

Save record 10

Record 11 1997-11-17

English

Subject field(s)
  • Plastics Manufacturing
CONT

Another process somewhat related to extrusion blow molding is the extrusion/molded neck process. Still used today by Owens-Illinois, this is a proprietary process that traces its roots to glass-blowing technology. It is unique in that the bottle neck finish is injection molded and the bottle body is extrusion blow-molded. In this process, the two halves of a neck finish cavity or neckring are mounted to an actuating head assembly, which intermeshes with the two halves of the blow-mold cavity. The process cycle begins with the main body mold cavity open and the neckring cavity closed. The actuating head assembly moves downward to contact the extrusion die head. When it is in position, extrusion pressure fills the neck section with plastic melt. After it is held for one to two seconds, the head assembly moves upward while, simultaneously, the parison is extruded. When the head assembly reaches the top of its stroke, the blow-mold cavity closes on the parison. The remaining steps of parison pinch-off, blowing, and part removal all follow conventional techniques. Although the production cycle is somewhat slow, the process offers the quality advantage of an accurately molded neck and the process advantage of a parison held at both ends.

Key term(s)
  • extrusion moulded neck blow-moulding process
  • extrusion moulded neck blow moulding process
  • extrusion molded neck blow molding process
  • forced extrusion blow moulding
  • extrusion/moulded neck process
  • extrusion molded neck process
  • extrusion moulded neck process

French

Domaine(s)
  • Plasturgie

Spanish

Save record 11

Record 12 1997-11-17

English

Subject field(s)
  • Plastics Manufacturing
CONT

Intermittent extrusion blow-molding machine. Parisons are extruded quickly; molding, cooling, and part removal all take place under the extrusion die head.

Key term(s)
  • intermittent extrusion blow-moulding machine
  • intermittent extrusion blow molding machine
  • intermittent extrusion blow moulding machine
  • intermittent extrusion blow-moulder
  • intermittent extrusion blow molder
  • intermittent extrusion blow moulder

French

Domaine(s)
  • Plasturgie

Spanish

Save record 12

Record 13 1997-11-04

English

Subject field(s)
  • Plastics Manufacturing
CONT

Intermittent extrusion is the second basic extrusion blow-molding category. In this process the parison is quickly extruded after the bottle is removed from the mold. The mold clamping mechanism does not need to transfer to a blowing station. Blow molding, cooling, and part removal all take place under the extrusion head, which also allows the clamping system to be more simple and rugged. The stop/start aspect of the extrusion method makes this process more suitable for polyolefin and other materials that are not heat-sensitive.

French

Domaine(s)
  • Plasturgie
CONT

Extrusion discontinue. Dans ce type d'extrusion, la matière est plastifiée puis stockée soit dans un pot d'accumulation, soit dans une tête d'accumulation adaptée à cet effet.

Spanish

Save record 13

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