Rayon has mild -resistance to acids and alkalis, and this is generally the fiber itself is not damaged by bleaches; however, dyes used in the fabric experience a color change. Being a cellulosic fiber, rayon will burn, but flame- retardant finishes can be applied. Here are some best characteristics of rayon fabric.
Moisture-Sensitive Sizing and Dyes
Sizings or starches are applied to rayon during the finishing process for giving sheen, luster, shape, and it also controls relaxation shrinkage. Sometimes they may increase the strength. Unfortunately, some of the sizings that apply to rayon are sensitive to moisture. When moisture contacts them, the sizing or dye usually wet spot and forms a “ring” on the fabric. That is why rayon fabric manufacturers apply good quality dyes to avoid these issues.
Loss of Body
Rayon fabrics usually become limp over time due to abrasion or general removal of sizing at the time of dry cleaning. Dry cleaners can apply to the size, but it never duplicates the effect achieved during commercial processing. Application of sizing also reduces slippage, fraying of fabrics; that is why you will never found rayon fabric without sizing.
Rayon Fiber/Fabrics types
Usually, the low wet strength of untreated viscose rayon cause shrinkage and loss of body in the case when the fabric is hand washed or machine washed. Viscose rayons are always labeled as “dry clean only.” So, it’s better to check the rayon type before purchasing.
Rayon is different in nature compared to other fibers. It is not a natural fiber, and it is neither synthetic. It is a fiber formed by natural materials combinations that are turned into the usable form. Being an inexpensive fiber, rayon usually uses in low-end garments.
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