如何计算网格布的克数与目数？箱包生意入行必看
网格布的克数是指单位面积的质量，通常以克/平方米（g/m²）表示。需要注意的是，这个质量通常是指涂层后的成品质量。根据JG 149-2003标准规定，单位面积质量应≥130克。在保温砂浆施工中普遍采用这一标准，外墙施工同样遵循此规范。
The grammage of fiberglass mesh refers to the mass per unit area, usually expressed in grams per square meter (g/m²). It's important to note that this mass typically refers to the mass of the finished product after coating. According to the JG 149-2003 standard, the unit area mass should be greater than or equal to 130 grams. This standard is commonly used in thermal insulation mortar construction and is also followed in exterior wall construction.
关于目数的计算，网格布目数的计算并非简单地基于孔径，而是按照纺织工艺中的经纬线根数来计算。这样计算出的孔径会比实际方形孔径略大。实际应用中，可以简单地用方形孔径的边长作为目数。例如标准网格布孔径5mm，可近似看作5目。
Regarding mesh count calculation, the mesh count of fiberglass mesh is not simply based on aperture size, but calculated according to the number of warp and weft threads in the textile process. The aperture calculated this way is slightly larger than the actual square aperture. In practical applications, the side length of the square aperture can be simply used as the mesh count. For example, the standard mesh cloth with 5mm aperture can be approximated as 5 mesh.
箱包行业应用提示：了解网格布规格对选择箱包内衬材料至关重要。130g/m²以上的网格布具有更好的强度和耐久性，适合高端箱包制作。5目左右的网格布既能保证透气性又能维持结构稳定性。
Application tips for bag industry: Understanding fiberglass mesh specifications is crucial for selecting bag lining materials. Mesh cloth above 130g/m² offers better strength and durability, making it suitable for premium bag production. Mesh count around 5 provides both breathability and structural stability.
