RESIN COATED OUTER COAT AND PLYWOOD PRODUCT CONTAINING THE LAYER SPECIFIED
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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资源简介：
A coated plywood article (200) comprising a plywood (90) coated with an outer layer (100). The outer layer (100) contains a layer (10) of the carrier coated with a resin coating (20)， and a barcode (QR1) located between the layer (10) of the carrier and the resin coating (20)， and the barcode (QR1) contains a plurality darker elements (E1) and many lighter elements (E2)， moreover， darker elements (E1) have the first average reflectance (R1)， lighter elements (E2) have a second average reflectance (R2)， the relative difference ((R2-R1) / R2) between the first average reflection coefficient (R1) and the second average reflection coefficient (R2) is greater than or equal to 40%， and the values ????of the first and second reflection coefficients (R1， R2) of elements (E1， E2 ) are defined for a combination of a barcode (QR1) and a resin layer (20) in white incident light. 5 ill.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
