Melamine-impregnated paper is an important component in the production of high pressure laminates and melamine faced boards. The two most vital quality control parameters assessed during the production of impregnated paper are resin content and volatile content. This work explored the creation of near-infrared (NIR) reflectance models to assess these parameters. A laboratory scale computer-controlled high-precision table gantry was also tested for two reasons: to create an NIR profile of an impregnated paper sample, and to calibrate NIR models by moving the probe using the gantry while taking a spectrum. The NIR profile obtained using the gantry reveals that distinct spots on the surface of the paper have different NIR spectra. The use of the gantry for model creation shows similar or improved performance when compared to taking triplicate spectra of a sample on discrete areas. The time taken for sample analysis also was lower with the use of the gantry because only one spectrum was needed, instead of three. The gantry also enables the creation of models to be used at an industrial scale, allowing an increased range of reference values while not depending on the industrial process. The method can be used to improve reflectance NIR models of samples with heterogeneous or rough surfaces.

三聚氰胺浸渍纸是高压层压板和三聚氰胺饰面板生产中的重要组成部分。在浸渍纸生产过程中评估的两个最重要的质量控制参数是树脂含量和挥发物含量。这项工作探索了创建近红外（NIR）反射率模型以评估这些参数的方法。还对实验室规模的计算机控制的高精度台式龙门进行了测试，其原因有两个：创建浸渍纸样的NIR轮廓；通过在扫描光谱的同时使用龙门移动探头来校准NIR模型。使用门架获得的NIR轮廓表明，纸张表面上的不同斑点具有不同的NIR光谱。与在不连续区域采集样品的三次光谱相比，使用龙门架进行模型创建显示出相似或改进的性能。使用龙门架进行样品分析所需的时间也更少，因为只需要一个光谱，而不是三个光谱。龙门架还可以创建可在工业规模上使用的模型，从而允许增加参考值范围，而不必依赖于工业过程。该方法可用于改善具有异质或粗糙表面的样品的反射近红外光谱模型。允许增加参考值范围，而不必取决于工业过程。该方法可用于改善具有异质或粗糙表面的样品的反射近红外光谱模型。允许增加参考值范围，而不必取决于工业过程。该方法可用于改善具有异质或粗糙表面的样品的反射近红外光谱模型。