Common Sourcing Mistakes When Ordering Interlining Fabric

Interlining problems often begin before production, during the sourcing stage. One common mistake is ordering based only on a general description such as “fusible interlining” without specifying construction, GSM, coating or application. Another is assuming that one grade will work across every part of a garment. These shortcuts can result in material that provides too much structure in one area and too little support in another. A clear specification makes the purchasing process more reliable. These checks are particularly helpful when multiple grades look similar in storage, because the wrong roll can otherwise reach production before the difference becomes obvious.

When selecting interlining fabric, buyers should first identify the garment section and required level of support. Woven interlining with PA double-dot coating is commonly used for structured body panels, while non-woven interlining with PES coating is commonly used for lighter components. GSM should then be matched to the outer fabric and desired hand-feel. Choosing the heaviest available material may seem safer, but excessive stiffness can change the character of the finished garment. Similarly, selecting a very light grade for a structured panel may leave the garment without sufficient body.

Another sourcing mistake is skipping production-style testing before a bulk order. A small sample can reveal differences in bonding, appearance, handle and shape retention that are not obvious from specifications alone. Buyers should test using suitable temperature, pressure and dwell time and review the fused fabric after cooling and finishing. Keeping a written specification for approved material can also help prevent substitutions or inconsistencies in later orders. The goal is not simply to purchase an interlining that bonds; it is to purchase one that performs appropriately for the garment being manufactured. A careful process based on application, construction, GSM and testing can reduce rework, improve consistency and make supplier communication much easier.