摘要:
A preform for obtaining a container comprises a hollow body (2) having a side wall (5) extending around a longitudinal axis (Z) and an end wall (4) arranged transversely to said longitudinal axis (Z), a point (A) of said end wall (4) having a value of specific residual melting enthalpy (?H spec ) ; there is at least one point (B, F, L, O) of said side wall (5) having a further value of specific residual melting enthalpy (?H spec ) that is greater than said value. A container comprises a containing body (31) having a first end zone (33) closed by a base wall (32) and a second end zone (34) suitable for engaging closing means; there is at least one point (A') of said base wall (32) having a value of specific residual melting enthalpy (?H spec ) that is significantly less than the specific residual melting enthalpy (?H spec ) of the points (B', F', L') of said containing body (31) distinct from said second end zone (34) .
摘要:
A finish for a plastic container and a preform adapted to be molded into the plastic container. The finish and the preform include an upper portion having a mouth defining an opening into the container. At least one groove is defined around a radial sidewall of the upper portion. The groove slopes gradually downward along the radial sidewall to a terminal end.
摘要:
Die vorliegende Erfindung betrifft einen Preform bzw. Vorformling (5) für das Blasformen, wobei die Wand des Preforms zumindest abschnittsweise aus mindestens drei Schichten besteht, nämlich aus zwei Deckschichten (1, 3) und einer zwischen den Deckschichten angeordneten Barriereschicht (2). Um einen Vorformling zur Verfügung zu stellen, mit dessen Hilfe ein Hohlkörper mit entsprechenden Barriereeigenschaften hergestellt werden kann, wobei der Preform einfach herzustellen ist und gegenüber bekannten Preforms verbesserte Eigenschaften aufweist, wird erfindungsgemäß vorgeschlagen, daß die Deckschichten und die Barriereschicht im wesentlichen aus dem gleichen thermoplastischen Kunststoffmaterial gebildet sind, wobei das thermoplastische Kunststoffmaterial der Barriereschicht mit einem Barrierematerial vermischt ist. Ein aus einem solchen Vorformling hergestellter Hohlkörper sowie ein Verfahren zur Herstellung eines Vorformlings werden auch beansprucht.
摘要:
Disclosed is a preferred mold design for producing plastic, molded preforms, which may be blow-molded into a container of a final, desired shape. A preferred mold includes a temperature control system for maintaining the preform mold at a desired temperature. The temperature control system can pass fluid through channels within the preform mold to cool plastic that is injected into the preform mold. In some arrangements, a mold comprises a neck finish mold, the neck finish mold comprising high heat transfer material positioned to transfer heat away from melt within a mold cavity of the mold.
摘要:
Disclosed is a preform (10) that is used for producing a container (44) made of a thermoplastic material and a corresponding container comprising one respective orifice area (12), a cylindrical neck area (14) that adjoins the orifice area (12) in the direction of a longitudinal axis (X), and a bowl-shaped elongate area (16) which can be widened during the production of the container (44). The orifice area (12) is surrounded by at least one circumferential closed pressed-on lip (24) which extends in a radial direction relative to the longitudinal axis (X). The neck area (14) has a smaller wall thickness (d2) than the elongate area (16) in a zone which lies close to said elongate area (16). The invention also relates to a device for closing said container.
摘要:
The invention relates to a multi-layered preform (1) that is provided with an inner layer (SB), said inner layer being removed in the base area. The preform further comprises a partial layer (TSB) that is split in a transitional zone and that is unsplit in the surface zone. The split partial layer (TSB) has preferably an irregular shape and is especially crisped.
摘要:
A blow molded container (10) having barrier properties and including an upper wall portion having an opening (13), an intermediate sidewall portion (14) positioned beneath the upper wall portion (12); and a base portion (16) positioned beneath the intermediate sidewall to support the container. The container includes a molded outer layer (24) having an inner surface (22) and an outer surface formed from at least 40% of recycled plastic, and a carbon coating formed on the inner surface of the outer layer (26) and adhered thereto and substantially coextensive with the outer layer, wherein said carbon coating has a thickness of less than about 10 microns.
摘要:
This invention relates to articles made of polyester (1), preferably polyethylene terephthalate (PET), having coated directly (80, 82) to at least one of the surfaces thereof one or more layers of thermoplastic material with good gas-barrier characteristics, and novel methods of making such articles. Preferably the barrier-coated articles take the form of preforms coated by at least one layer of barrier material and the containers blow-molded therefrom. Such barrier-coated containers are preferably of the type to hold beverages such as soft drinks, beer or juice. The preferred barrier materials have a lower permeability to oxygen and carbon dioxide than PET as well as key physical properties similar to PET. The materials and methods provide that the barrier layers have good adherence to PET, even during and after the blow molding process to form containers from preforms. Preferred barrier coating materials include poly(hydroxyamino ethers). In one preferred method, preforms are injection molded then barrier-coated immediately thereafter.
摘要:
Process for forming a multilayered plastic article and multilayered plastic preform (39) and container (54), wherein a polyepoxide or a liquid crystal polymer in the liquid form is applied to a substrate (16) in a thickness which varies over the extent of the substrate (16) to form a multilayered substrate (20), forming a tubular liner (10) from said multilayered substrate (20) and coating the tubular liner (10) with an outer layer.