Views: 0 Author: Site Editor Publish Time: 2023-07-31 Origin: Site
Ballistic vests go through some of the same evaluations as regular garments. Fiber manufacturers check the tensile strength of fibers and yarns, and cloth manufacturers test the tensile strength of subsequent materials. The manufacturer also tested Nonwoven Spectra for tensile strength. Ballistic vest manufacturers check the strength of the panel material (whether Kevlar or Spectra) and producing a satisfactory operation requires a skilled observer to inspect the vest after the panels are stitched and the vest is complete.
Here is the content list:
Manufacturing Ballistic vest
Splicing panels and finishing the vest
Making Ballistic vest material
To make Kevlar, the polymer poly(p-phenylene terephthalamide) needs to be produced in the laboratory first. This is done through a method called "polymerization," which involves combining molecules into long chains. The crystallized liquid with the rods of polymer is then extruded through a spinneret (a small metal plate with tiny holes that look like a shower head) to form the Kevlar yarn. The Kevlar is then passed through a cooling barrel to help it harden. After being sprayed with water, the synthetic fibers are wound on rolls. Kevlar producers then typically send the fiber to a spinning machine, which twists the yarn to make it suitable for weaving.
cut panel
The Kevlar material ships to Alida in large curls. The material is first unrolled onto a cutting table long enough to allow multiple panels to be cut at once; sometimes it can be as long as 32.79 yards (30 meters). Multiple layers of fabric (as little as 8 or as many as 25 depending on the level of protection required) are placed on the slicing table as required. Subsequently, the sheet is placed on top of the fabric layer, similar to the pattern section used for home stitching.
Using a handheld that plays like a jigsaw puzzle, except it has a 5.91-inch (15 cm) cutting wheel instead of a cutting wire, just like when the pizza cutter was abandoned, the worker cuts around the cutting board to form the Ballistic vest panel, which can then be positioned in precise stacks.
Splice panel
While Spectra garments generally require no sewing, as their panels are often simply reduced and stacked in layers, which then go into tight pockets within the vest, ballistic vests made from Kevlar can be face-seamed or field seamed. The cover stitching creates small diamonds of material that are separated by seams, while the box stitching creates a large single square box in the center of the Ballistic vest. Quilt sewing is the extra effort - deep and intricate, it provides a sturdy panel that is difficult to remove from sensitive areas. However, container stitching is quick and easy and allows for the free movement of the vest.
To sew the layers together, workers placed a template on top of the layers and rubbed chalk over the exposed areas of the panels, creating a dotted line on the fabric. The sewer then stitched the layers together, following the samples made with chalk. Next, sew the length tabs to the panels.
Finish vest
The shells of the panels are stitched together in the same manufacturing cell using well-known commercial sewing machines and standard sewing methods. The panel is then slid into the shell and accessories such as straps are sewn on. The completed Ballistic vest is packed and shipped to the customer.
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