| 摘要 |
PROBLEM TO BE SOLVED: To provide a carpet substrate suitable for use in carpets and its production method. SOLUTION: This carpet substrate is made of continuous composite fiber which in turn comprises a first fiber-forming polymer and a second fiber-forming polymer whose melting point is lower than the first fiber-forming polymer by more than 20 deg.C. In the cross section of this continuous composite fiber, the second fiber-forming polymer 2 occupies 5 to 20% of the outer peripheral surface area and of the cross-sectional area respectively and acts as the binding element between fibers. The method for producing this carpet substrate includes the steps of hot pressing this nonwoven web using a press contact machine at a temperature below the melting point of the second fiber-forming polymer, mechanically interlacing the fibers by means of a needle punch and then heat treating to melt the second fiber-forming polymer component for binding the fibers. |
