Waterproof Fabrics

is polyester waterproof? In fact, ordinary polyester fabrics themselves are not waterproof. The moisture content of polyester materials is very low, only about 0.4%. However, the shape of polyester fibers can be changed to create grooves on the fiber surface, thereby forming a capillary effect and achieving moisture absorption and quick drying. Purpose. In order to achieve the opposite purpose of waterproofing, we must post-finish the polyester fabric to add various functions.

SIKOR-TEX's PUL and TPU waterproof fabrics feature durable water repellency (DWR) to effectively resist water penetration. These fabrics are typically made of polyester or nylon and coated with a PUL or TPU layer on the backside. TPU is more environmentally friendly, while PUL offers greater durability, maintaining excellent performance even after multiple washes. We also offer PUL or TPU fabrics in polyester-cotton and nylon-cotton blends for enhanced skin-friendliness. These fabrics are ideal for making diapers, mattress covers, raincoats, and other products, effectively preventing water penetration.

SIKOR-TEX has also developed 200D-1000D nylon or polyester tela fabrics with PU, PVC, and silicone coating technologies. The thickness of the PU coating determines the waterproof performance of tents or backpacks. For example, a PU1500mm coating will not leak under a static water column of 1500mm. Based on practical experience, a PU1000 coating can withstand light to moderate rain, PU1500-2000 coatings can resist medium to heavy rain, and coatings exceeding 3000mm are suitable for various harsh external conditions.