In my experience, it depends on whether the fabric has been “pre-shrunk” before the shorts were manufactured from it. Instead they are talking about the kind of weave in the shirt. Poplin is a fabric weave, so a cotton poplin shirt is a cotton shirt with a poplin weave. Cotton twill does shrink a little when first laundered. Never place viscose items in the dryer because viscose does shrink! How to Avoid Viscose Shrink. Always store items clean. care: machine wash, tumble dry. Woven items such as pants can be hung. Typically, poplin shirts are made from cotton or cotton and polyester. opacity: translucent. When people refer to poplin shirts, they usually aren’t referring to a type of material. Knit items should be stored folded to prevent stretching or distorting. Now, consider all of the chemicals pumped into the atmosphere and all of the energy used to power the plants. Technical specifics for rayon challis vs viscose poplin: Rayon Challis: weight: 0-3.5 oz per yard. For more expert fabric and home care tips, check out the Clean Talk Blog. If you are using cotton twill to sew clothing you should launder it first to allow it to shrink before you begin. Store. width: 44” – 58” drape: soft liquid Before you start hating polyester, just know cotton has a dirty side, too. Tabinet is another word for poplin. However, there are also exceptions to this rule. Cotton farming uses the most pesticides of any … Both challis and poplin should be sewn with a new or fine needle. Poplin has a very tight plain weave and originally had silk warm and wool weft threads.