The present invention provides an openable corrugated hose for accommodating lines, comprising: a first corrugated hose shell, a second corrugated hose shell, a joint section, at which the first corrugated hose shell and the second corrugated hose shell are each connected to one another pivotably in a first end section, and a lip section, which is provided on a second end section of at least one of the corrugated hose shells, wherein the lip section is manufactured from a different material than the corrugated hose shells.

An injection head for an apparatus for the production of twin-wall pipes has an external melt channel leading to an external nozzle and an internal melt channel leading to an internal nozzle. From the internal melt channel, a conically expanding internal nozzle channel leads to an internal nozzle outlet of the internal nozzle. In the region of the internal nozzle channel, an internal nozzle adjustment device is arranged by means of which the gap cross-section of the internal nozzle channel is displaceable and adjustable up to the internal nozzle outlet by radial displacement.

The invention is generally directed to sports bottles and other articles produced by blow molding from polymeric materials containing isosorbide having glass transition temperatures ranging from 90 C. to 130 C., as well as to processes for producing them. These articles can be exposed to water at high tempeatures and can be produced by using a suitable combination of a stretch ratio of less than 3 and a preform temperature at least 20 C. greater than the glass transition temperature (Tg) of the polymeric material.

The present invention provides an openable corrugated hose for accommodating lines, comprising: a first corrugated hose shell, a second corrugated hose shell, a joint section, at which the first corrugated hose shell and the second corrugated hose shell are each connected to one another pivotably in a first end section, and a lip section, which is provided on a second end section of at least one of the corrugated hose shells, wherein the lip section is manufactured from a different material than the corrugated hose shells.

Provided is an extrusion molding apparatus capable of producing a multi tube with which an outer shape of a cross section is close to a perfect circle. The multi-lumen tube extrusion molding apparatus includes a resin supplying portion, a die that has an extrusion port at a lower end portion and molds the multi-lumen tube as the resin supplied from the resin supplying portion is extruded vertically downward, and an outer surface molding apparatus that molds an outer surface of the extruded tube. In a state in which the resin is supplied from the resin supplying portion to the die, the outer surface molding apparatus depressurizes a molding space of circular cylindrical shape in a state in which the extruded tube is contained in the molding space to mold an outer surface of the contained multi-lumen tube to a circular cylindrical shape.