Laptop backpack customized nesting: nesting is the technical work of cutting work, which can save raw materials for cutting work. In a set of paper grids, the paper grids are of different sizes, and the specifications of the raw materials always have a fixed width data, generally 54 inches. 56.58.60 inches 4 kinds of width. For the width of the paper, there are often X blocks in rows and X+1 blocks in excess. In order to save raw materials, we also arrange a small paper grid to use the remaining raw materials after arranging X pieces of hand, so as to achieve the purpose of making full use of raw materials. Generally, the following rules must be followed for the layout: 1. Arrange the large paper grid first, and then the small paper grid. 2. The surface pattern and inner texture of the raw material should be considered for the layout. The pattern on the surface is placed upright, diagonally, horizontally, and upside down, and the paper grids should also be arranged upright, diagonally, and upside down. The inner texture of handbag raw materials, especially genuine leather, is divided into horizontal and straight lines. Grasp the two ends of the raw material by hand to stretch, the ones with stretch force are horizontal grains; the ones without stretch force are straight grains. The horizontal grain has a strong refolding force, and the bag cover, handle and strap that need to be swayed frequently should be laid out according to the horizontal grain. The straight grain has a strong supporting force and can withstand extrusion without deformation. The front and rear panels and most components should be laid out according to the straight grain. The horizontal grain may become longer during the process of the car, while the straight grain will not, pay special attention.