PROBLEM TO BE SOLVED: To provide a powder and grain spraying device and a powder and grain spraying method capable of uniformly spraying powders and grains with good quantitativity in a width direction of a base material continuously transported.SOLUTION: A powder and grain spraying device 1 includes: a hopper 2 having a storage 20 capable of temporarily storing powders and grains P inside, a discharge port 23 discharging the powders and grains P and a movement path 22 for the powders and grains connecting between the storage 20 and the discharge port 23； and transportation means 3 being disposed with a gap G to the discharge port 23 and transporting the powders and grains P discharged from the discharge port 23 in a predetermined one direction X and spraying on a base material 100 continuously transported. In a plane view, the length of the discharge port 23 in a direction orthogonal to the transportation direction X is long compared to the length in the transportation direction X. In the movement path 22, a maximum width D in the transportation direction X is two times or more and less than five times of the maximum particle size of the powders and grains P and a length H in a direction discharged with the powders and grains P is one time or more of the maximum particle size of the powders and grains P. The gap G has a size of one time or more of the maximum particle size of the powders and grains P.SELECTED DRAWING: Figure 1【課題】連続搬送される基材に対して、粉粒体を該基材の幅方向に均一に定量性良く散布し得る粉粒体散布装置及び粉粒体の散布方法を提供すること。【解決手段】粉粒体散布装置１は、内部に粉粒体Ｐを一時的に貯蔵可能な貯蔵部２０、粉粒体Ｐを排出する排出口２３、及び貯蔵部２０と排出口２３との間を結ぶ粉粒体用移動路２２を備えたホッパー２と、排出口２３に対して隙間Ｇを置いて配置され、排出口２３から排出された粉粒体Ｐを所定の一方向Ｘに搬送し、連続搬送される基材１００上に散布する搬送手段３とを備えている。排出口２３は平面視において、搬送方向Ｘと直交する方向の長さが該搬送方向Ｘの長さに比して長い形状をなしている。移動路２２は、その搬送方向Ｘの最大幅Ｄが粉粒体Ｐの最大粒子径の２倍以上５倍未満、その粉粒体Ｐが排出される方向の長さＨが粉粒体Ｐの最大粒子径の１倍以上である。隙間Ｇは、粉粒体Ｐの最大粒子径の１倍以上である。【選択図】図１
