Hose and coupling joint

摘要

For the junction of a plastics hose (1) for fluids, to a plastics coupling (2), the end section (4) of the coupling (2) is injected round the end section (3) of the hose (1) to give a material bond over the end length. The end side (5) of the end section (3) of the hose (1) has the same inner dia. as the cylindrical section (6) of the coupling (2) against it so that, at the injected section (6), there is a free fluid flow without resistance at the hose (1) and coupling (2). The hose (1) and coupling (2) are of polyamide, polyolefin, fluorinated plastics, polyester, polyacetal and polyketone. The polyamide is one of polyamide PA 4.6, PA 6, PA 6.6, PA 11, PA 6/12 and PA 12. The polyolefin is a polypropylene or polyethylene. The fluorinated plastics is ethylenetetrafluoroethylene (ETFE), polyvinylidenefluoride (PVDF) or THF. The polyester is a PBT, PEN, PBN or PET.