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US 7,842,222 B2Granted
Preform for blowing a container and process for manufacturing thereof
AssigneeResilux
InventorWilliam Dierickx
Life of this patent
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AssigneeResilux
InventorWilliam Dierickx
Estimating the term…
Preform for the blow-molding of a container comprising a neck section (10), an adjoining wall section (20) having a substantially cylindrical shape, with in between a neck ring (12) as a transition region, and further a bottom section (30) which forms the base of the preform, which is composed of a multilayer structure consisting in two surface layers, the one of which (1) is directed outwardly respective the preform and wherein the other (3) is directed inwardly with respect thereto, with in between an intermediate layer (2) which forms a core layer, wherein both surface layers (1, 3) are composed of a primary material and wherein said intermediate layer (2) is composed of a secondary material, remarkable in that the center surface of said intermediate layer (2) is directed outwardly, toward the outer surface, with respect to the center surface of said wall section (20) and in that said primary and secondary materials respectively are mutually different. This invention further relates to a method for producing the aforementioned preform. Microorganismus are mixed into the polymers to improve material properties.
Preform for blow-molding a container comprising a neck section, an adjoining wall section having a substantially cylindrical shape, a neck ring between the neck section and the adjoining wall section, and a bottom section that forms a base of the preform, the preform defining a multilayer structure including a first outwardly-facing perform surface layer composed of a primary material, a second inwardly-facing perform surface layer composed of the primary material, and an intermediate core layer composed of a secondary material that is different from the first primary material, the intermediate core layer being disposed between the first and second surface layers, a center surface of the intermediate layer being directed outwardly, toward the outwardly-facing preform surface layer, with respect to a center surface of the wall section, wherein the primary material includes a synthetic PET material, the secondary material includes at least one of a recycled PET material and blends thereof with additives, and the intermediate layer includes a hydrophobic polymer and organisms selected from at least one of cells and cell products worked to aggregates in the polymer to form a polymer-bio aggregate.
Method for producing a preform in an injection molding mould comprising the steps of:
Dependencies are inferred from the claim text.