Abstract: Preform for the blow moulding of a container comprising a neck section (1) including a pouring opening (20), an adjacent wall section (2) and a bottom section (3). It consists of a primary plastic raw material in a primary area (A1, A2, A3) and at least one secondary material in at least a secondary area (B1, B2, B3) both having a mutually different coloration. Said preform is remarkable in that said bottom section (3) is composed of a multi-layer structure with primary layers composed of said primary plastic material, and additional secondary layers (6, 7, 8, 9, 10). The latter are composed of said secondary material, two surface secondary layers the one of which (6) is directed outwardly respective the preform, whereas the other one (10) is directed inwardly, and an intermediate secondary layer between them (7, 8, 9), which constitutes a core layer, which is located between two said primary layers.

Abstract: An injection molding apparatus for manufacturing hollow objects, such as plastic e.g. multi-layered preforms, comprising an injection mold (1) with a front (2) and a rear side (3), which is composed of a clamp plate (4) on the front side (2), and a hot runner plate (5), where a manifold (6) is mounted in the hot runner plate, between which a set of injection nozzles (7) is arranged, which are each provided with a central supply duct (8), at the free end (9) whereof an injection gate (10) is provided. Said apparatus is remarkable in that said injection gate (10) is closable by means of a locking rod (11), which is movable herein to and fro through a profiled inner part (12) which is received in a holder (13) around which a heating element (14) is provided into which a primary channel (15) opens for supplying the plastic base material to the injection gate (10).

Abstract: Preform for the blow moulding of a container comprising a neck section (1) including a pouring opening (20), an adjacent wall section (2) and a bottom section (3). It consists of a primary plastic raw material in a primary area (A1, A2, A3) and at least one secondary material in at least a secondary area (B1, B2, B3) both having a mutually different coloration. Said preform is remarkable in that said bottom section (3) is composed of a multi-layer structure with primary layers composed of said primary plastic material, and additional secondary layers (6, 7, 8, 9, 10). The latter are composed of said secondary material, two surface secondary layers the one of which (6) is directed outwardly respective the preform, whereas the other one (10) is directed inwardly, and an intermediate secondary layer between them (7, 8, 9), which constitutes a core layer, which is located between two said primary layers.

Abstract: 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.

Abstract: 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.

Abstract: Preform for producing containers (90) comprising a neck section (8), a wall section (6) and a bottom section (7), which is composed of a multi-layer structure comprising three layers, the one of which (1) is directed inwardly respective the preform and is composed of a primary material (PM) thereby forming a primary basis layer (1). Said primary material consists of a synthetic material. A further layer (3) is directed outwardly with respect to said primary layer (1), in such a way that it forms the outer surface layer (3) of the preform, thereby consisting of a tertiary material (TM) forming a tertiary surface layer (3). Said tertiary layer is composed of a further synthetic material. Said preform is remarkable in that an intermediate layer (2) is provided between the primary and tertiary layers (1, 3) which is composed of a secondary material (SM) consisting of a fluid. Process and device for manufacturing said preform.

Abstract: Method for producing hydrophobic polymers, wherein a hydrophobic polymer is selected; a set of organisms is selected from among cells and/or cell products; aggregates are formed by working said cells and/or cell products in said polymers resulting in the formation of a so-called polymer-bio aggregate, wherein there is performed a new function of the thus polymer product. This invention further relates to the use of a so-called P.B.A. obtained therewith in specific applications.