Parameters of Woven Luggage Bags

Commonly used woven fabric densities are 36×36 threads/10cm², 40×40 threads/10cm², and 48×48 threads/10cm².

 

1. Weaving Density Tolerance

Weaving density tolerance refers to the number of flat yarns added or removed compared to a given standard weaving density.

 

2. Woven Fabric Weight per Unit Area

The weight per unit area of ​​woven fabric is expressed as grams per square meter (gsm), and it is an important technical indicator of woven fabric. Gsm mainly depends on the warp and weft density and the thickness of the flat yarns. Gsm mainly affects the tensile strength and load-bearing capacity of the woven fabric, and it is a key factor for manufacturers to control costs.

 

3. Woven Fabric Tensile Load

Tensile load, also known as tensile strength, refers to the tensile load that a woven fabric can withstand in both the warp and weft directions.

 

4. Width

The width of various woven fabrics directly affects the bag-making process. For tubular fabrics, the width is expressed as the fold diameter, which is equal to half the circumference.

Width shrinkage rate: The width of all woven fabrics after winding, unwinding, cutting, printing, and sewing, resulting in a bag width that is slightly smaller than the original winding width, is called width shrinkage.

 

5. Hand feel

PP flat yarn woven fabrics have a thicker, firmer, and coarser feel.

HDPE flat yarn woven fabrics have a softer, smoother, and less dense feel.

Adding calcium masterbatch to PP flat yarn materials makes them firmer, while adding a small amount of HDPE to PP makes them softer. Narrower flat yarns result in a flatter weave and a softer feel, while wider flat yarns involve more folds during weaving and a rougher feel.