What is a blister tray? It is created by heating a plastic sheet and using a vacuum to draw it onto a mold; once cooled and set, it forms an insert with recesses shaped to fit the product. It holds the product securely while keeping it clearly visible, combining display functionality with protection.
Where are blister trays used? For electronics (earphones, watches), tool sets, cosmetics (brushes, lipstick), pharmaceuticals (blister packs), and toys. Their strength lies in “contoured display”—the product is held securely (often appearing suspended) and is immediately visible.
You often see a “transparent base” inside boxes for electronics, tools, or cosmetics, where the product fits snugly—this is a blister tray, an insert formed via vacuum molding. This article explains the essentials of blister trays, serving as a reference for clients in the 3C and precision product sectors.
How does the molding process work? The mold determines the shape: mold creation, vacuum forming, and trimming. Mold costs depend on complexity, with the cost per unit decreasing as production volume rises. Precision depends on both the mold itself and the molding parameters.
What should you look out for? First, confirm material certifications (food contact safety, export compliance). Use prototypes to verify the fit. Material thickness affects both structural strength and cost. You can easily judge the quality by checking if the product rattles when inserted or if it is easy to remove.
What materials are used? PVC is cheap but has poor environmental credentials and contains chlorine. PET offers excellent transparency and eco-friendliness. APET is an eco-friendly PET variant available in food-grade options. PS is rigid but brittle. Choose materials based on product value and environmental requirements; PET and APET are preferred for export orders.
How do you choose between blister trays and molded pulp trays? Blister trays offer transparency, a snug fit, and great display appeal, but come with higher costs and environmental concerns. Molded pulp trays are eco-friendly, cost-effective, and look premium, but are opaque. Your choice depends on your budget and environmental requirements.
