The invention discloses a preparation method of a latex-free woven carpet. According to the preparation method,
filament yarn formed by hot-melting fibers or staple
fiber yarn is used as a second cladding layer,
polyester fiber filament yarn or staple
fiber yarn is used as a first cladding layer, the
mass of the second cladding layer accounts for 20-50% of the total
mass of composite
yarn, the
mass of the first cladding layer accounts for 10-15% of the total mass of the composite yarn, the balance is core yarn, and in this way,
pile weft yarn is prepared. As the latex-free carpet is produced by using hot-melting
copolymer fibers as a bonding material, and the
pile yarn prepared from nylon fibers or
wool is cooperatively used, the hot-melting
copolymer fibers are molten when heated to the
melting point of the hot-melting
copolymer fibers or above in the hot-press process, the fiber macromolecular chain conformation is changed, through transition of chain segments, the whole macromolecular chain is glided and viscously flows, and after solidification,
pile and
weft yarn are effectively solidified, and the
weft yarn and warp yarn are effectively solidified. Accordingly, the pulling-out force of the pile is enhanced, and the shape preserving performance and the size stability of the carpet are improved, so that the backing process in the carpet preparation process is omitted, and the carpet obtained by using the method is more
environmentally friendly.