Dipping adhesive for flexible industrial canvas and preparation method of dipping adhesive

The invention discloses a dipping adhesive for flexible industrial canvas and a preparation method of the dipping adhesive. The dipping adhesive comprises raw materials in parts by weight as follows: 20-30 parts of distilled water, 0.035-0.045 parts of sodium hydroxide, 55-65 parts of butadiene-vinyl pyridine latex, 20-30 parts of natural latex, 6-7 parts of ammonium water and 75-85 parts of a phenolic resin solution, wherein the phenolic resin solution comprises raw materials in parts by weight as follows: 150-170 parts of distilled water, 0.15-0.25 parts of sodium hydroxide, 10-11 parts of resorcinol and 12-14 parts of formaldehyde. Compared with the prior art, the dipping adhesive adopts phenolic resin prepared from resorcinol and the formaldehyde solution as well as butadiene-vinyl pyridine latex and natural latex as main raw materials, so that the canvas has better flexibility, the adhesion performance between a framework layer and a rubber layer is improved, the service life of a conveyor belt is prolonged, and the conveying accuracy of the conveyor belt is improved.