▎ 摘　　要

NOVELTY - A seamless wall covering comprises a base fabric having width of more than 2 m, and printing blocks adhered to the base fabric. The printing block is prepared by mixing a mixture of powdered sepiolite, attapulgite, diatomite, anion powder and graphene with water in an amount of 1/8-1/3 of the mixture, 20-40 minutes, adding binder in an amount of 4-8 times of the mixture, printing obtained material on the base fabric by a printing machine, and drying. The printing machine includes a hopper, a knurling shaft provided above the hopper, and a feed shaft provided above the knurling shaft. USE - Seamless wall covering (claimed). ADVANTAGE - The seamless wall covering releases large amount of negative ions and far infrared, effectively adsorbs formaldehyde, benzene, total volatile organic compound, ammonia and other harmful gases in air, and improves indoor air environment. DETAILED DESCRIPTION - A seamless wall covering comprises a base fabric having width of more than 2 m, and printing blocks adhered to the base fabric. The printing block is prepared by mixing a mixture of powdered sepiolite, attapulgite, diatomite, anion powder and graphene with water in an amount of 1/8-1/3 of the mixture, 20-40 minutes, adding binder in an amount of 4-8 times of the mixture, printing obtained printing material on the base fabric by a printing machine, and drying. The printing machine includes a hopper, a knurling shaft provided above the hopper, and a feed shaft provided above the knurling shaft. The hopper is provided with a printing material. The bottom of the knurling shaft is immersed in the printing material. Flutes are provided on the side wall of the knurling shaft. When the knurling shaft rolls, the printing material is stuck in the flutes, base fabric is sandwiched between the feed shaft and the knurling shaft, feed shaft and knurling shaft are rotated in opposite directions, the base fabric is conveyed by the feed shaft, and the printing material on the flute is printed on the base fabric.