Abstract: The invention relates to a profile made from a polymer material comprising a linear low-density polyethylene and a very low-density polyethylene having a specific range of flexural modulus, and to a flexible hose made from said profile. It is part of the invention that the profile wall thickness of the flexible hose is reduced while a sufficient and efficacious value for the flex life is maintained and while a sufficiently high memory is maintained, when compared to the common wall thickness of current hoses, such that the hose of the invention has a reduced weight while the durability and fatigue resistance of the hose is maintained at a sufficiently high value.

Abstract: The invention relates to a profile made from a polymer material comprising a linear low-density polyethylene and a very low-density polyethylene having a specific range of flexural modulus, and to a flexible hose made from said profile. It is part of the invention that the profile wall thickness of the flexible hose is reduced while a sufficient and efficacious value for the flex life is maintained and while a sufficiently high memory is maintained, when compared to the common wall thickness of current hoses, such that the hose of the invention has a reduced weight while the durability and fatigue resistance of the hose is maintained at a sufficiently high value.

Abstract: Flexible plastic hose comprising a flexible wall made out of a plurality of laterally connected windings of a helically wound profile, wherein the windings of the profile are attached to each other by means of a weld, wherein the profile comprises a web part with predetermined properties for providing flexibility to the hose, and wherein the profile ends on both sides in an upright part. The weld is located between the upright part of the adjacent windings and together with these upright parts forms a helical reinforcement rib on the flexible wall of the hose with predetermined properties for providing hub strength to the hose.

Abstract: A flexible stretch hose with a wall which comprises a spirally wound profile (1; 11; 21) in a plastic material. Consecutive windings of the profile are secured to each other by means of a weld. The profile comprises, in cross-section, at least one bottom section (2; 12) and at least one rib section (4; 14; 24), wherein the rib section of the profile, relative to the bottom section, also forms a protrusion of the wall of the hose which gives the hose a predetermined hub strength. The profile comprises an unfoldable section (5; 15; 25) provided in order to be unfolded under the influence of a tensile; force in the axial direction of the hose, thereby allowing an extension of the hose, wherein the unfoldable section comprises at least two profile sections lying loosely against each other, which sections are interconnected at one end.

Abstract: Flexible hose a corrugated wall of which an outer surface comprises a multitude of consecutive protrusions (1) and grooves (2) and of which an inner surface comprises a multitude of internal protrusions (4) and grooves (3), a multitude of barriers for closing off each of the multitude of internal and/or external grooves (2), each of the multitude of barriers comprising a first closing leg (10, 12) of a first profile part and a second closing leg (11, 13) of a second profile part, the second closing leg being directed to the first closing leg, the first and second closing legs having a complementary shape provided to form a substantially smooth inner and/or outer surface.

Abstract: Flexible plastic hose comprising a flexible wall made out of a plurality of laterally connected windings of a helically wound profile, wherein the windings of the profile are attached to each other by means of a weld, wherein the profile comprises a web part with predetermined properties for providing flexibility to the hose, and wherein the profile ends on both sides in an upright part. The weld is located between the upright part of the adjacent windings and together with these upright parts forms a helical reinforcement rib on the flexible wall of the hose with predetermined properties for providing hub strength to the hose.

Abstract: A flexible stretch hose with a wall which comprises a spirally wound profile (1; 11; 21) in a plastic material. Consecutive windings of the profile are secured to each other by means of a weld. The profile comprises, in cross-section, at least one bottom section (2; 12) and at least one rib section (4; 14; 24), wherein the rib section of the profile, relative to the bottom section, also forms a protrusion of the wall of the hose which gives the hose a predetermined hub strength. The profile comprises an unfoldable section (5; 15; 25) provided in order to be unfolded under the influence of a tensile; force in the axial direction of the hose, thereby allowing an extension of the hose, wherein the unfoldable section comprises at least two profile sections lying loosely against each other, which sections are interconnected at one end.

Abstract: Flexible hose comprising a corrugated wall of which an outer surface comprises a multitude of consecutive protrusions (1) and grooves (2) and of which an inner surface comprises a multitude of internal protrusions (4) and grooves (3), comprising a multitude of barriers for closing off each of the multitude of internal and/or external grooves (2), each of the multitude of barriers comprising a first closing leg (10, 12) of a first profile part and a second closing leg (11, 13) of a second profile part, the second closing leg being directed to the first closing leg, the first and second closing legs having a complementary shape provided to form a substantially smooth inner and/or outer surface.

Abstract: The invention relates to a construction industry pipe for use in the construction industry, such as for example a drain pipe or a central vacuum cleaner pipe or the like, comprising a tubular body having a substantially non-collapsible outer wall comprising rigid sections alternating with corrugated flexible sections. The invention further relates to a method for manufacturing such a pipe, which involves the technique of blow/vacuum moulding, and a method for installing a conduit system comprising such a pipe.

Abstract: A flexible hose (1) with a corrugated wall (2), comprising an internal surface (3) with projections (4, 5) and recesses (6, 7), said hose (1) being obtained by moulding a plastic material, wherein each internal projection (4, 5) comprises a substantially flat and smooth top face (8, 9). Each top face (8, 9) has a first width (W1) and each internal recess has a second width (W2). The ratio between first width and second width (W1/W2) is preferably larger than or equal to 2.2. The hose may comprise a hollow longitudinal protuberance or score.