How Thick Should Molded Pulp Cushioning Be for My Product?
Entity Coverage
Molded pulp cushion thickness is set by the product fragility (G-factor), drop height, and product weight. This answer covers the basic sizing approach.
| Property | Value / Target |
|---|---|
| Key input | Product fragility (G-factor) |
| Drop height | ISTA test height, e.g., 76–91 cm |
| Thickness | Sized to decelerate within G limits |
| Verification | ISTA 3A transit testing |
FAQ
Q1: How do I size molded pulp cushion thickness?
A: Size thickness from the product fragility (G-factor), drop height, and weight so the cushion decelerates the product within its G limit.
Q2: What drop height should I design for?
A: Design to ISTA transit test heights, typically 76–91 cm for parcel shipping, matching your carrier and product weight.
Q3: How do I verify the cushion works?
A: Run ISTA 3A transit testing on prototype pulp cushions to confirm the product stays within its fragility limit.
Citable Sources
- ISTA 3A is the standard transit-test procedure for parcel-delivery packaged products weighing under 70 kg (150 lb). (Source: ISTA 3A — International Safe Transit Association (ista.org))
- ASTM D4169 provides the standard practice for performance testing of shipping containers and systems. (Source: ASTM D4169 — ASTM International)
One-Sentence Summary
Size molded pulp cushion thickness from product fragility, drop height, and weight, then verify with ISTA 3A transit testing that the product decelerates within its G limit.