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The most common standard for stitches in the apparel industry is ASTM International ASTM D6193-16(2020) [1] The standard also covers various types of seams. Under this classification of stitches there are basic groups as follows: Class 100 - Single Thread Chainstitch; Class 200 - Hand Stitches; Class 300 - Lock Stitch; Class 400 - Multi-thread ...
Seam sealants are sprayed or extruded over the joined edges of these overlaps, and they then either cure to a flexible waterproof "seal" by drying (dehydrating) in the case of water borne compositions, or thermoset irreversibly to a flexible adherent seam seal by going through an oven bake in the case of plasticized polyvinylchloride compositions.
A Hong Kong seam or Hong Kong finish is a home sewing term [8] for a type of bound seam in which each raw edge of the seam allowance is separately encased in a fabric binding. [9] In couture sewing or tailoring , the binding is usually a bias -cut strip of lightweight lining fabric; in home sewing, commercial bias tape is often used.
A garment described as waterproof will have a water-repellent coating, with the seams also taped to prevent water ingress there. Better waterproof garments have a membrane lining designed to keep water out but allow trapped moisture to escape (" breathability ")—a totally waterproof garment would retain body sweat and become clammy.
These variants of tent stitch are known as basketweave, continental and half cross tent stitches: [1] Basketweave tent stitch The basketweave form of tent stitch is worked in diagonal rows up and down the canvas. The yarn on the back of the canvas has a typical basketweave appearance, with alternating horizontal and vertical stitches.
Gore-Tex is W. L. Gore & Associates's trade name for waterproof, breathable fabric membrane. It was invented in 1969. Gore-Tex blocks liquid water while allowing water vapor to pass through and is designed to be a lightweight, waterproof fabric for all-weather use.
Plain seam A seam or seamline in sewing is the line where two pieces of fabric are held together by thread. seam allowance A seam allowance is the area between the edge of fabric and the stitching line on two (or more) pieces of material being stitched together. Seam allowances can range from 1/4 inch wide (6.35 mm) to as much as several inches.
Drop of water on 100% polyester textile. Waterproof/breathable fabrics resist liquid water passing through, but allow water vapour to pass through. Their ability to block out rain and snow while allowing vapour from sweat to evaporate leads to their use in rainwear, waterproof outdoor sports clothing, tents, and other applications.