Businessmen who sold products in plastic, acrylic or glass containers were obliged to use paper labels to identify their wares.
在過去，若想在塑膠、玻璃、壓克力…… 等形體不一的容器上，「印」上商標、圖案，非得借助紙張﹘﹘像早期黑松汽水之類的玻璃瓶裝飲料的商標紙，就是一例。