文档介绍：Lesson 15
Seven Steps for Cushioned Package Development
第15课缓冲包装设计七步法
Introduction
Packaging can be unnecessarily expensive in a couple of ways:
1. Inadequate design results in shipment damage
2. Over-design or poor design (more protection than is required or materials being incorrectly used ) results in excessive material cost.
The procedure can be broken down into seven basic steps.
Introduction
Product Fragility
Determine the amount of mechanical shock the product can survive on its own by evaluating “fragility” or “g-factor ”.
2. Determine Conditions
Consider the handling and transportation environment the product will face and establish the amount of shock the product may encounter (“drop height”).
3. Calculate Cushion Requirements
Use dynamic cushioning curves to determine thickness, static loading and bearing area.
Introduction
4. Recognizing Design Constraints
Check for important problems pressive creep, cushion buckling and extreme temperature effects.
5. Design Prototypes and Test
Build a prototype and determine its actual performance.
6. Consider Vibration Effects
Determine the natural frequency of ponent which is prone to vibration damage, pare it against the vibration characteristics of your package design.
Introduction
7. Monitor Performance
Monitor the performance of your design to determine when internal changes in the design might alter the requirements for package performance.
( Another way for cushion design: Five steps for package cushion design ) 动画
Step 1 Determine Product Fragility
Fragility is normally expressed in units of “g’s” and indicates the maximum deceleration the product can withstand without being damaged. The more fragile a product is, the lower its g-factor(Table ).
Step 1 Determine Product Fragility
Table Approximate fragility of typical packaged Articles
Extremely Fragile Aircraft altimeters, gyroscopes, items
with delicate mechanical alignments
Very Delicate Medical diagnostic