how to keep shirt collar stiff

{"cid":"91147928","title":"Fusible Shirt Interlining The Ultimate Solution for Wrinkle-Free Shirts","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ec\/7e\/cab97391b4c7d283ac27c38dcc07-200x200-1.jpg","attrs":{"Price":"Negotiate","Brand Name":"UNT","Model Number":"01","Minimum Order Quantity":"1000 meter","Delivery Time":"10-15 DAYS","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"1000000meters\/month","Packaging Details":"PE plastic bag and Nylon bag; the roll packed by transparent strong plastic bag, the outside by strong woven polybag.","Certification":"OEKO\/GRS","Width":"60 inches","Structure":"Plain weave","Products Type":"interlining , lining , interfacing","Feature":"Adhesive, Fusible, Shrink-Resistant","Texture":"Smooth","Shrinkage":"Minimal","Fabric Type":"Plain type","Technics":"Plain weave","Thickness":"Thin","Packing":"100m\/roll","Glue":"PA \/ PES","Product Type":"Interlinings & Linings","Coating Method":"Double dot"}}