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INJECTION MOLD [49 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-07-14

English

Subject field(s)
  • Plastics Manufacturing
DEF

A mould in which the runners are kept at a temperature that is higher than the solidification temperature of the material.

CONT

Hot runner molds. Thermoplastic runners are reground and reused. A logical extension of the three-plate mold overcomes this and is called a hot runner mold. This mold has a hot runner plate, which is a block of steel heated with electric cartridges, thermostatically controlled. This keeps the plastic fluid. The material is received from the injection cylinder and is forced through the hot runner blocks into the cavities. It is a more difficult mold to build and operate than a three-plate mold, but produces parts less expensively on longer-running jobs.

OBS

In injection moulding.

OBS

hot-runner mould: term and definition standardized by ISO.

Key term(s)
  • hot runner injection mold
  • hot-gate mould
  • hot-runner injection mold

French

Domaine(s)
  • Plasturgie
DEF

Moule dans lequel les canaux sont maintenus à une température supérieure à la température de solidification de la matière.

OBS

En moulage par injection.

OBS

moule à canaux chauffés : terme et définition normalisés par l'ISO.

Key term(s)
  • moule à canal chauffé
  • moule à canal chauffant
  • moule à canal chaud

Spanish

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

Molde en el cual los bebederos se mantienen a una temperatura más alta que la de solidificación del material.

OBS

Moldeo por inyección.

Key term(s)
  • molde con canal caliente
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 2015-03-24

English

Subject field(s)
  • Plastics Manufacturing
DEF

The moving platen of an injection or compression molding machine to which half of the mold is secured during operation.

OBS

This platen is moved by either a hydraulic ram or a toggle mechanism.

OBS

moving plate; moving table: terms standardized by ISO.

French

Domaine(s)
  • Plasturgie
DEF

Plaque qui supporte une partie d'un moule et qui se déplace vers une plaque fixe pour fermer le moule.

OBS

plaque mobile : terme et définition normalisés par l'ISO.

Spanish

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

Placa que sostiene parte del molde y se desplaza hacia una placa fija para cerrar el molde.

Save record 3

Record 4 2014-04-11

English

Subject field(s)
  • Plastics Manufacturing
DEF

Dimensional distortion of a plastic object after moulding or other fabrication.

CONT

A serious problem encountered with complex-shaped injection-molded parts is warpage... Possible causes for warpage include overpacking in the gate area because of high injection pressure, improperly balanced core and cavity temperatures, molded-in strains caused by low stock temperature or the mold being too cold, too long a flow, insufficient gates, improper design, nonuniform walls, improperly balanced multiple gates, the part being ejected when it is too hot, or inadequate or poor location of the knockout mechanism.

OBS

warpage; warping: terms and definition standardized by ISO [International Organization for Standardization].

French

Domaine(s)
  • Plasturgie
DEF

Distorsion dimensionnelle d'un objet en plastique après moulage ou une autre opération.

OBS

gauchissement; gauche : termes et définition normalisés par l'ISO [Organisation internationale de normalisation].

Spanish

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

Distorsión dimensional de un objeto plástico después del moldeo o de otra operación.

Save record 4

Record 5 2014-01-06

English

Subject field(s)
  • Plastics Manufacturing
CONT

[In injection moulding, the hot material is forced] out of a heated cylinder... into a chilled mold where it sets upon cooling to the form of the mold.

French

Domaine(s)
  • Plasturgie
CONT

[La matière fluidifiée est] injectée dans un moule froid énergiquement fermé.

Spanish

Save record 5

Record 6 2012-10-19

English

Subject field(s)
  • Casting and Patternmaking (Metal Processing)
CONT

Thixomolded parts, like molded plastic parts, are finished right out of the mold. Compounding, debinding, and sintering steps are not required, as they are in PIM [plastic injection molding]. And, unlike PIM, Thixomolding can be used to mold much bigger IMMC parts, using much bigger molding machines, such as those over 500 tons. Thixomolding is used to mold net-shape parts out of metal alloys that are traditionally used in die-casting metal alloys like magnesium. In many regards, this IMMC process is very similar to the single-step plastics injection molding process. Still, there are differences in the Thixomolding machines, as well as in the Thixomolding materials.

OBS

Thixomolding® is a registered trademark for the process. Worldwide patents are owned by Thixomat Inc. (Ann Arbor, MI).

Key term(s)
  • thixomoulding

French

Domaine(s)
  • Moulage et modelage des métaux
CONT

L'entreprise Husky Injection Molding System Ltd [...] un des leaders mondiaux dans le domaine de la construction de machines de moulage par injection pour matières plastiques, utilise son expertise pour l'appliquer au moulage par injection d'alliages de magnésium [...] Une équipe de 24 personnes a été constituée pour développer des machines utilisant le concept du Thixomolding qui emploie le moulage par injection pour fabriquer des pièces en magnésium, délaissant ainsi les techniques traditionnelles de moulage par coquille. Les principaux avantages de ce procédé sont le peu d'investissement et d'espace nécessaires car il ne requiert pas de fonderie.

CONT

Chrysler est fier d'annoncer que le thixomoulage d'aluminium lui permet de réaliser les bras de suspension et de direction de son Prowler en bénéficiant d'un substantiel gain de poids. Les techniques d'injection sous forte pression de lingots semi-solides se rapprochent finalement beaucoup de l'injection thermoplastique, et permettent à l'aluminium de s'immiscer dans les liaisons au sol tout en réalisant des pièces à la géométrie optimisée à un prix raisonnable.

OBS

Thixomolding® : marque déposée.

Key term(s)
  • Thixomolding

Spanish

Save record 6

Record 7 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 7

Record 8 2011-08-02

English

Subject field(s)
  • Packaging in Plastic
  • Plastics Industry
DEF

A machine used for the process of blow molding.

OBS

Blow molding consists in forming bottles or packages from plastic by expanding a blank in a hollow mold. The blank is usually a tube, formed on the machine that performs the blow molding. The parison is extruded through extrusion blow molding, or injected through injection blow molding, with the use of granular resin as raw material.

French

Domaine(s)
  • Emballages en matières plastiques
  • Industrie des plastiques
CONT

Les machines servant à l'extrusion-soufflage des corps creux ont été remarquablement perfectionnées, elles aussi : à l'heure actuelle, on réalise les installations les plus diverses, allant des machines extrêmement rapides pour réservoirs de petites dimensions, jusqu'aux machines les plus puissantes, servant à la fabrication des fûts et récipients ayant une grande capacité; elles peuvent être à une station, à deux stations, à système rotatif. [...] Les machines à souffler modernes sont construites selon des systèmes modulaires; elles sont équipées de programmeurs électroniques permettant le réglage automatique de l'épaisseur de la paraison, reliés à des régulateurs de la longueur de la paraison, également électroniques.

Spanish

Save record 8

Record 9 2007-11-19

English

Subject field(s)
  • Plastics Industry
CONT

Resins that have a relatively "sharp" melting point or that do not have melt strength, as is the case with many injection grades, are difficult to blow mold.

French

Domaine(s)
  • Industrie des plastiques
CONT

Grade injection à très haute fluidité.

Spanish

Save record 9

Record 10 2007-11-19

English

Subject field(s)
  • Plastics Manufacturing
CONT

Cam-acting molds are commonly used in injection molding when the parts being molded require undercuts and holes. The cams must be withdrawn before or while the mold is opening to permit ejection. They are also used for engineering considerations relating to ejection, venting, and gate locations.

CONT

Mechanic, hydraulic or pneumatic cam mould.

Key term(s)
  • cam-acting mould
  • cam mold

French

Domaine(s)
  • Plasturgie

Spanish

Save record 10

Record 11 2007-11-19

English

Subject field(s)
  • Plastics Manufacturing
CONT

Sequential injection molding of thermoplastic polymers has gained considerable importance in recent years.... In a single mold with two or more inlets and moving parts that allow sequential entrance of melts into different sections of a main cavity, two or more types of thermoplastics are sequentially injected. The final product is a single piece made of polymers with different mechanical properties, which are permanently bonded together.

Key term(s)
  • sequential injection moulding

French

Domaine(s)
  • Plasturgie
OBS

injection séquentielle : Procédé d'injection des matières plastiques dans lequel la matière fondue est introduite dans le moule par plusieurs orifices et à des temps différents.

Spanish

Save record 11

Record 12 2007-11-19

English

Subject field(s)
  • Plastic Materials
CONT

The extrusion blow-molding process requires the resin to have a capability known as "melt strength. "The extruded parison must always hang in the air by its own strength until the mold can capture it for blow molding. Resins that have a relatively "sharp" melting point or that do not have melt strength, as is the case with many injection grades, are difficult to blow mold.

CONT

Melt strength (MS) is the measurement of a product’s parison flow during extrusion.

French

Domaine(s)
  • Matières plastiques
CONT

La résistance de la paraison à l'état fondu dépend directement des caractéristiques de fonte de la résine extrudée. La capacité à extruder une paraison de dimensions suffisantes pour produire la pièce désirée dépend de la résistance de la paraison à l'état fondu. Plus la paraison est grande et lourde, plus la résistance à l'état fondu doit être importante.

Spanish

Save record 12

Record 13 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 13

Record 14 2004-10-08

English

Subject field(s)
  • Plastics Manufacturing
CONT

[Thermoplastic] injection molding machine reduces pelletized raw material and colorants into a hot liquid. This "melt" is forced into a cooled mold under tremendous pressure. After the material solidifies, the mold is unclamped and a finished part is ejected.

French

Domaine(s)
  • Plasturgie
CONT

Les produits d'analyse de Moldflow peuvent simuler l'écoulement et le compactage du plastique, le refroidissement du moule ainsi que le retrait et le gauchissement de la pièce dans le cas du moulage par injection de thermoplastiques, d'injection par gaz, d'injection bimatière et d'injection-compression.

Spanish

Save record 14

Record 15 2004-04-26

English

Subject field(s)
  • Chemistry
CONT

Starfire has developed a unique matrix polymer that enables one to produce high purity Silicon Carbide (SiC) ceramics and ceramic matrix composites.

CONT

Studies of Elastomer Matrix Flow Mechanisms in Nonwoven Reinforced Composites.... The general aim of this work was to develop a suitable technique for fabricating elastomer composites based on three-dimensional fibrous materials and to study the rheological behavior of matrix polymer in these structures with varied structural and fiber surface characteristics. A new type of mold was developed and tested for structural reaction injection molding(SRIM) of elastomer composites having polymer matrices made from a mixture of two components.

French

Domaine(s)
  • Chimie
DEF

Continuum constitué par un polymère dans lequel se trouvent dispersées des parties non miscibles avec lui.

CONT

Polymérisation sur matrice : polymérisation dans laquelle les molécules de monomère (M) sont préalablement placées dans une position déterminée, par association avec les unités monomères (T) d'un polymère appelé matrice.

CONT

Domaines d'élastomère dans une matrice polymère vitreuse : cavitation et plasticité en relation avec la morphologie.

CONT

Ces dernières années ont vu le développement d'une nouvelle classe de matériaux, les nanocomposites à matrice polymère, et notamment l'utilisation des argiles comme nanocharges.

OBS

pluriel : matrices polymères.

Spanish

Save record 15

Record 16 2003-10-20

English

Subject field(s)
  • Plastic Materials
  • Biochemistry
CONT

Resins that have a relatively "sharp" melting point or that do not have melt strength, as is the case with many injection grades, are difficult to blow mold.

French

Domaine(s)
  • Matières plastiques
  • Biochimie

Spanish

Campo(s) temático(s)
  • Materiales plásticos
  • Bioquímica
Save record 16

Record 17 2003-03-20

English

Subject field(s)
  • Plastics Manufacturing
  • Medication
DEF

A mold into which a plasticated material is introduced from an exterior heating cylinder.

CONT

The preform mold consists of four major components : preform cavity, injection nozzle, neckring insert, and core rod assembly.

CONT

Figure 82.6. The indexing table of a three-station injection blow-molder. On the right are the parison preform molds. On the left are the bottle blow molds. In the center is the stripper bar. Mounted to the indexing table are three sets of core rods.

OBS

injection mould: term standardized by ISO.

Key term(s)
  • preform mould
  • parison preform mould
  • parison mould

French

Domaine(s)
  • Plasturgie
  • Médicaments
CONT

À partir d'un matériau plastifié par la chaleur, on procède à l'injection sous forte pression [...] de ce matériau à travers une buse de faible diamètre, dans une cavité du moule à préforme.

OBS

moule à injection : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
  • Medicamentos
Save record 17

Record 18 1999-07-06

English

Subject field(s)
  • Plastics Manufacturing
  • Facilities and Equipment (Rubber)
DEF

An injection mould to which material is supplied in a plastic state from a screw-type plasticiser.

Key term(s)
  • injection mold with screw plasticising
  • injection mould with screw plasticizing
  • injection mold with screw plasticizing

French

Domaine(s)
  • Plasturgie
  • Installations et équipement (Caoutchouc)

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
  • Instalaciones y equipo (Caucho)
Save record 18

Record 19 1998-08-31

English

Subject field(s)
  • Plastics Manufacturing
DEF

An injection or transfer mold wherein the cavity is filled with molding material directly into the center of the part.

Key term(s)
  • centre gated mold
  • centre-gated mold
  • center gated mould
  • centre gated mould
  • center-gated mould

French

Domaine(s)
  • Plasturgie

Spanish

Save record 19

Record 20 1998-08-24

English

Subject field(s)
  • Plastics Manufacturing
  • Industrial Tools and Equipment
  • Machinery
CONT

In a modern injection molding machine, the pellets are conveyed forward within the barrel by a rotating screw, and melt as they go. The molten plastic is deposited at the forward end of the barrel, displacing the screw backward. When enough material has been plasticized, a hydraulic cylinder pushes the screw forward, forcing the molten plastic ahead of it through a nozzle, sprue, runners, and a narrow gate into a water-cooled mold cavity, where the molten plastic solidifies.

CONT

... if the equipment with the malfunction is a plastic injection molding machine, the possible functions might include injection forward, injection return, screw run, back pressure control, clamp close, clamp pressurization, prefill shift, mold protect, and clamp open.

OBS

injection machine: term standardized by ISO.

Key term(s)
  • injection-moulding machine

French

Domaine(s)
  • Plasturgie
  • Outillage industriel
  • Machines
CONT

Les premières presses à injecter comportaient un piston poussant la matière ramollie dans la buse [...] Dans les presses actuelles, la plastification est assurée par une vis sans fin, analogue à celle d'une extrudeuse. Cette vis [...] fait alternativement fonction de piston d'injection et de vis de plastification.

OBS

machine à injecter : terme normalisé par l'ISO.

Key term(s)
  • machine d'injection

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
  • Herramientas y equipo industriales
  • Maquinaria
Save record 20

Record 21 1998-07-15

English

Subject field(s)
  • Plastics Manufacturing
DEF

In moulding, a metal pin located in one half of a mould which enters a corresponding hole in the other half so that, upon closure of the mould, the two parts become correctly aligned.

CONT

Unlike injection blow molds that are mounted onto a die set, all extrusion blow molds are fitted with hardened steel guide pins and bushings. These guide pins ensure the two mold halves are perfectly matched.

CONT

Leader pins or guide pins should be provided on all molds. At a minimum, the diameter should be 2% of the mold width plus length.

OBS

dowel pin; guide pin; dowel: terms standardized by ISO.

Key term(s)
  • guide post

French

Domaine(s)
  • Plasturgie
DEF

Tige cylindrique fixée à demeure sur une matrice du moule, dont l'extrémité arrondie s'engage dans un alésage porté par l'autre matrice. On peut ainsi réaliser une translation parallèle des deux matrices.

OBS

tenon de guidage; goujon de guidage : termes normalisés par l'ISO.

Key term(s)
  • tenon

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
Save record 21

Record 22 1998-06-18

English

Subject field(s)
  • Plastics Manufacturing
CONT

What makes automatic molding automatic is the mold. There are a number of requirements for automatic molding. The machine must be capable of consistent, repetitive action. The mold must clear itself automatically. This means that all the parts have to be ejected using a runnerless mold, or that the runner and the parts have to be ejected in a conventional mold. There may be some method for assisting in the removal of the pieces, usually in the form of a wiper mechanism, air blast, or robot. All machines used automatically must have a low-pressure closing system to prevent the machine from closing under full pressure if there is any obstruction between the dies. The machine shuts itself off and/or an alarm is sounded. Automatic molding does not necessarily eliminate the operator. Many times, an operator is present to pack the parts and perform secondary operations. Automatic molding gives a better quality piece and more rapid cycle. In automatic molding an experienced person usually attends several machines. Unless the powder feed and part removal are automated, this person takes care of those operations.

OBS

automatic mold : A mold for injection, compression, or transfer molding that repeatedly goes through the entire molding cycle, including ejection, without human assistance.

Key term(s)
  • automatic moulding

French

Domaine(s)
  • Plasturgie

Spanish

Save record 22

Record 23 1998-02-27

English

Subject field(s)
  • Plastics Manufacturing
CONT

The mold must clear itself automatically. This means that all the parts have to be ejected using a runnerless mold, or that the runner and the part have to be ejected in a conventional mold.

Key term(s)
  • runnerless injection mold
  • sprueless mold
  • direct-gated injection mold

French

Domaine(s)
  • Plasturgie

Spanish

Save record 23

Record 24 1998-02-27

English

Subject field(s)
  • Plastic Materials
CONT

Engineers from G.W. Plastics Inc., Gethel, Vt., and Lexmark International, Lexington, Ky., Carilon aliphatic polyketone for gears in laser-printer tone cartridges.

CONT

Several original polymer families are to be launched at NPE. Perhaps the most impelling is aliphatic polyketone from Shell Chemical Co. [Stand S1323]. The products(tradename Carilon) are said to mold well, exhibiting superior mechanical and temperature-resistance performances and excellent part surface properties. They require no pre-drying. Material is viable in injection, blow and rotomolding, and pipe, sheet, and profile extrusion.

French

Domaine(s)
  • Matières plastiques
CONT

La famille des thermoplastiques techniques vient de s'agrandir. [...] La polycétone aliphatique [...] aurait hérité grosso modo, du caractère de deux de ses proches parents : le polyamide (PA) et le polyacétal (POM). Par sa tenue en température, la nouvelle résine tiendrait plutôt du polyamide. Tandis que sa bonne tenue à l'eau et sa «clipsabilité», c'est-à-dire à la fois sa résistance mécanique et son élasticité, lui prêteraient davantage les traits du polyacétal. [...] La polycétone aliphatique est un polymère à chaîne linéaire, dans laquelle alternent très régulièrement des molécules de monoxyde de carbone et d'éthylène. [...] Premiers secteurs d'application visés : l'automobile, l'électrotechnique et l'électroménager.

Spanish

Save record 24

Record 25 1998-02-19

English

Subject field(s)
  • Plastics Manufacturing
CONT

Oil is sent behind the clamp ram, which moves the moving platen and closes the mold. The pressure behind the clamp ram builds up, developing enough force to keep the mold closed during the injection cycle.

French

Domaine(s)
  • Plasturgie

Spanish

Save record 25

Record 26 1998-02-02

English

Subject field(s)
  • Plastics Manufacturing
DEF

A mold for injection, compression, or transfer molding that repeatedly goes through the entire molding cycle, including ejection, without human assistance.

French

Domaine(s)
  • Plasturgie

Spanish

Save record 26

Record 27 1998-02-02

English

Subject field(s)
  • Plastics Manufacturing
DEF

Small opening between runner and cavity in an injection or transfer mold which breaks cleanly when the piece is ejected.

CONT

Restricted gates are circular in cross section and, for most materials, do not exceed 0.060in. (1.5mm) in diameter.

OBS

restricted gate: term standardized by ISO.

French

Domaine(s)
  • Plasturgie
OBS

entrée rétrécie : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
Save record 27

Record 28 1998-01-27

English

Subject field(s)
  • Plastics Manufacturing
CONT

Venting. When the hot plastic is injected into the mold it displaces air. In a well-built, properly clamped mold without vents, the injection material may compress the air. The heat of compression might burn the material. The force of the compression might open the mold, causing flash. The resistance of the compressed air might prevent the mold from completely filling. These problems are alleviated by used of vents, which are usually ground on the parting line. Their size depends on the nature of the material and the size of the cavity.

French

Domaine(s)
  • Plasturgie
CONT

Évacuation de l'air de l'empreinte. L'air contenu dans l'empreinte, non évacué et comprimé, provoque des brûlures sur les pièces moulées ou d'autres défauts tels que remplissages incomplets, soufflures, bulles ou soudures visibles et cassantes. Ce risque d'emprisonnement d'air dans la cavité est diminué lorsque l'empreinte est composée de plusieurs éléments. On peut dans tous les cas usiner de petits canaux dans le plan de joint.

Spanish

Save record 28

Record 29 1997-12-23

English

Subject field(s)
  • Plastics Manufacturing
CONT

The hydraulic injection cylinders are located on each side of the screw or there is a single hydraulic cylinder directly behind the screw. They bring the screw forward, injecting previously melted material into the mold cavity. The injection pressure is maintained for a predetermined length of time. This is called the boost or hold pressure.

Key term(s)
  • boosting pressure

French

Domaine(s)
  • Plasturgie
CONT

Cette pression de maintien définit la force d'ouverture du moule, et, par suite, détermine le nombre possible de cavités pour un objet et un polymère donnés.

OBS

maintien : Figure 30. Cycle d'injection-soufflage.

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
Save record 29

Record 30 1997-12-17

English

Subject field(s)
  • Plastics Manufacturing
CONT

The injection blow-molding process requires two molds : one for molding the preform or parison, the other for molding the bottle. The preform mold consists of four major components : preform cavity, injection nozzle, neckring insert, and core rod assembly.

French

Domaine(s)
  • Plasturgie
CONT

À partir d'un matériau plastifié par la chaleur, on procède à l'injection sous forte pression [...] de ce matériau à travers une buse de faible diamètre, dans une cavité du moule à préforme. Sous l'effet de la pression, le matériau plastifié remplit la cavité et se solidifie au contact des parois du moule. On obtient la préforme, c'est la phase d'injection.

Key term(s)
  • cavité du moule

Spanish

Save record 30

Record 31 1997-12-17

English

Subject field(s)
  • Plastics Manufacturing
CONT

Injection blow molding required as many as four mold water temperature controllers to fine tune the temperature of individual zone or areas of the preform cavity.... In high temperature situations, oil circulating units are substituted.

French

Domaine(s)
  • Plasturgie
OBS

Ces deux circuits permettent un réglage plus souple de la température de la préforme en fonction du polymère et de la forme de l'objet (de 70 à 150 °C, par circulation d'eau ou d'huile).

Spanish

Save record 31

Record 32 1997-12-17

English

Subject field(s)
  • Plastics Manufacturing
CONT

The injection blow-molding process requires two molds : one for molding the preform or parison, the other for molding the bottle. The preform mold consists of four major components : preform cavity, injection nozzle, neckring insert, and core rod assembly.

French

Domaine(s)
  • Plasturgie
CONT

L'intérêt d'une pression élevée réside dans : [...] la compensation des forces de frottement et des pertes de pression dans le bloc de répartition et dans les buses d'alimentation des empreintes; [...]

OBS

À partir d'un matériau plastifié par la chaleur, on procède à l'injection sous forte pression [...] de ce matériau à travers une buse de faible diamètre, dans une cavité du moule à préforme. Sous l'effet de la pression, le matériau plastifié remplit la cavité et se solidifie au contact des parois du moule. On obtient la préforme, c'est la phase d'injection.

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
Save record 32

Record 33 1997-11-26

English

Subject field(s)
  • Plastics Manufacturing
CONT

Unlike injection blow molds that are mounted onto a die set, all extrusion blow molds are fitted with hardened steel guide pins and bushings.

French

Domaine(s)
  • Plasturgie

Spanish

Save record 33

Record 34 1997-11-26

English

Subject field(s)
  • Plastics Manufacturing
CONT

The preform mold consists of four major components : preform cavity, injection nozzle, neckring insert, and core rod assembly.

CONT

The core rod assembly ... has four functions or features: It forms the interior of the preform. It supports the parison or the bottle during transfer. It is the valve where air enters to expand the parison. The valve is located either in the shoulder area or in the tip, the location being governed by the bottle or core rod length-to-diameter ratio. Wide mouth bottles (that is, core rods with low length-to-diameter ratios) will usually have a shoulder valve. The core rod has a "blow by" groove. This annular groove, located near the seating shank ... is needed to seal the parison and prevent excessive air loss during bottle blowing and to eliminate elastic retraction of the parison during the transfer between cavities.

CONT

Even though the parison is exposed to the air, melt strength is not as crucial because of the support provided by the parison core rod.

OBS

See Figure 82.21 in PLMAT, p. 1085.

French

Domaine(s)
  • Plasturgie
CONT

[...] le soufflage s'effectue en général au travers du noyau.

OBS

Voir Figure 31 dans TECHN.

Spanish

Save record 34

Record 35 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 35

Record 36 1997-10-14

English

Subject field(s)
  • Plastics Manufacturing
CONT

The primary difficulty with these methods is that the injection mold and blow-mold stations must stand idle while the finished parts are removed. This led to the 1961 invention in Italy by Gussoni of the three-position method, which used a horizontal 120° indexing head with split mold parison and bottle cavities and three sets of core rods.

French

Domaine(s)
  • Plasturgie
CONT

[...] la paraison est retirée de l'empreinte alors qu'elle se trouve dans l'état plasto-élastique, puis est transférée dans le noyau autour duquel le plastique a été moulé, dans le moule de soufflage. Ce transfert est programmé par la rotation de 120° d'une tourelle servant de support au noyau à l'aide d'un dispositif d'indexation entraîné par un moteur [...]

Spanish

Save record 36

Record 37 1987-02-02

English

Subject field(s)
  • Farm Equipment
  • Wheels and Tires (Motor Vehicles and Bicycles)
OBS

LIM=liquid injection mold

French

Domaine(s)
  • Matériel agricole
  • Roues et pneus (Véhicules automobiles et bicyclettes)

Spanish

Save record 37

Record 38 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 38

Record 39 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 39

Record 40 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 40

Record 41 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 41

Record 42 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 42

Record 43 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 43

Record 44 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 44

Record 45 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 45

Record 46 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 46

Record 47 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 47

Record 48 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 48

Record 49 1986-09-26

English

Subject field(s)
  • Plastics Manufacturing

French

Domaine(s)
  • Plasturgie

Spanish

Save record 49

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