An air pipe for motor vehicles, in particular for connecting a hot component to a cold component, is provided. A first connector at a first end of the pipe is provided for securing the pipe in an airtight manner to a hot component and a second connector at a second end of the pipe is provided for securing the pipe in an airtight manner to a cold component. At least one flexible pipe portion is provided between the first and the second connectors. Supporting rings made from a material which is dimensionally stable in relation to the flexible pipe material are provided. The supporting rings surround a free pipe cross section and stabilize the cross-sectional shape of the flexible pipe portion.

An air pipe for motor vehicles, in particular for connecting a hot component to a cold component, is provided. A first connector at a first end of the pipe is provided for securing the pipe in an airtight manner to a hot component and a second connector at a second end of the pipe is provided for securing the pipe in an airtight manner to a cold component. At least one flexible pipe portion is provided between the first and the second connectors. Supporting rings made from a material which is dimensionally stable in relation to the flexible pipe material are provided. The supporting rings surround a free pipe cross section and stabilize the cross-sectional shape of the flexible pipe portion.

An extensible-retractable helically reinforced hose is formed by helically wrapping a freshly extruded bead of thermoplastic material about a rotating mandrel to form a helical array of spaced reinforcing coils, and by helically wrapping a freshly extruded thin yet wide web of thermoplastic material so edge regions of the wide web are placed onto and bond continuously with the peripheries of each adjacent pair of the reinforcing coils, with a leading edge region of each new wrap of the web overlying and bonding to a trailing edge region of a prior web wrap. Central portions of each web wrap extend radially inwardly and are sandwiched between adjacent reinforcing coils when the hose is retracted to a minimal axial length.

An extensible-retractable helically reinforced hose is formed by helically wrapping a freshly extruded bead of thermoplastic material about a rotating mandrel to form a helical array of spaced reinforcing coils, and by helically wrapping a freshly extruded thin yet wide web of thermoplastic material so edge regions of the wide web are placed onto and bond continuously with the peripheries of each adjacent pair of the reinforcing coils, with a leading edge region of each new wrap of the web overlying and bonding to a trailing edge region of a prior web wrap. Central portions of each web wrap extend radially inwardly and are sandwiched between adjacent reinforcing coils when the hose is retracted to a minimal axial length.

A flexible duct having a hollow tube shape. The flexible duct includes at least one end, and an opening defined by a first edge of the at least one end and forming a duct inlet or duct outlet. The at least one end includes at least a first attachment and a second attachment, and the first attachment and the second attachment are different. The first attachment and the second attachment can be used independently of one another to connect the at least one end to a first inlet or a first outlet. In one embodiment, a flexible duct includes an attachment that is a cuff. In another embodiment, a connector includes two different attachments and the connector can be affixed to a flexible duct end. In another embodiment, a method includes providing a flexible duct with different attachments at one end of the flexible duct, and flowing air through the flexible duct. In a further embodiment, a method includes providing a connector having two different attachments.

A flexible duct having a hollow tube shape. The flexible duct includes at least one end, and an opening defined by a first edge of the at least one end and forming a duct inlet or duct outlet. The at least one end includes at least a first attachment and a second attachment, and the first attachment and the second attachment are different. The first attachment and the second attachment can be used independently of one another to connect the at least one end to a first inlet or a first outlet. In one embodiment, a flexible duct includes an attachment that is a cuff. In another embodiment, a connector includes two different attachments and the connector can be affixed to a flexible duct end. In another embodiment, a method includes providing a flexible duct with different attachments at one end of the flexible duct, and flowing air through the flexible duct. In a further embodiment, a method includes providing a connector having two different attachments.

The present invention relates to a hose line (1) for transporting abrasive media with an electrically conductive reinforcing element (5) running in or on the hose wall (2) and extending in the hose direction (6), wherein an insert (7) made of electrically conducting material is at least partially embedded in the hose wall (2) and extends in the hose direction (6) at a distance from the reinforcing element (5).

The present invention relates to a hose line (1) for transporting abrasive media with an electrically conductive reinforcing element (5) running in or on the hose wall (2) and extending in the hose direction (6), wherein an insert (7) made of electrically conducting material is at least partially embedded in the hose wall (2) and extends in the hose direction (6) at a distance from the reinforcing element (5).

A laminate, containing two or more polyolefin resin layers, wherein at least one polyolefin resin layer (A) contains a cellulose fiber including a cellulose fiber having a fiber length of 0.3 mm or more dispersed in the layer; a content of the cellulose fiber in the polyolefin resin layer (A) is 1% by mass or more and less than 60% by mass; and wherein a polyolefin resin layer (B) different from the polyolefin resin layer (A) is laminated in contact with the polyolefin resin layer (A).

A laminate, containing two or more polyolefin resin layers, wherein at least one polyolefin resin layer (A) contains a cellulose fiber including a cellulose fiber having a fiber length of 0.3 mm or more dispersed in the layer; a content of the cellulose fiber in the polyolefin resin layer (A) is 1% by mass or more and less than 60% by mass; and wherein a polyolefin resin layer (B) different from the polyolefin resin layer (A) is laminated in contact with the polyolefin resin layer (A).