| 摘要 |
<p>The method for producing a container, which is protected against electrostatic charges, for transporting and/or storing flowable substances, where the light-permeable walls of the container are built in three-layer under using a conductive plastic material and the layer includes a first plastic material (A) having an average specific resistance of smaller than 10 1>0>omega , comprises mixing a portion of the first plastic material and a portion of a basic material in the form of master batches with a portion of further non-conductive plastic material in a predetermined ratio. The method for producing a container, which is protected against electrostatic charges, for transporting and/or storing flowable substances, where the light-permeable walls of the container are built in three-layer under using a conductive plastic material and the layer includes a first plastic material (A) having an average specific resistance of smaller than 10 1>0>omega , comprises mixing a portion of the first plastic material and a portion of a basic material in the form of master batches with a portion of further non-conductive plastic material in a predetermined ratio, and supplying the mixture to a blow molding machine. The mixing step is carried out in an extruder (15). The first plastic material for the formation of a middle layer of multi-layer wall of the container to be produced in a blow molding process is coextruded with the further non-conductive plastic material, which is used for the formation of the outer and inner layers, as tube-shaped blank, which is supplied to the blow molding machine. The master batch of the first plastic material contains additive acted as adhesive mediator in relation to the used base material. A partially processed plastic material is used for producing the layer containing the first plastic material and is produced during trimming the finished container. The first plastic material is supplied as master batch only in a quantity, which is required for the observance of the predetermined specific resistance and/or a predetermined conductivity. The further conductive plastic material has a conductivity of 1 Sm ->1>optionally after doping, is doped with an electron donor or an electron acceptor, which comprises halide and/or sulfur-containing compounds, has an average specific resistance of larger than 200x 10 1>5>omega , and includes a second plastic material. The first and second plastic materials are chemically identical. The first plastic material is present in a quantity of 0.5-50 wt.% related to the total quantity of the layer. The average specific resistance of the layer is smaller than 190x 10 1>5>omega . The inner-lying layer has the first plastic material. The outer and inner layers do not have the first plastic material.</p> |
