Backpack Construction

Backpack Construction Directory

Backpack Harness System

1. The Backpack Harness System

Harness Internal Staves

1. What are the Internal Staves?
2. Do the Internal Staves need contouring to the individual back?
3. What is the purpose of contouring the Internal Staves?
4. What are Pre-Contoured Internal Staves?

Harness Upper Load Stabiliser Straps

1. What are the Upper Load Stabiliser Straps?
2. What is the purpose of correctly positioning the Upper Load Stabiliser Straps?
3. How do you verify correct positioning of the Upper Load Stabiliser Straps?
4. How do you use the Upper Load Stabiliser Straps
5. What is the correct exit angle for the Upper Load Stabiliser Straps from the shoulder?

Harness Lower Load Stabiliser Straps

1. What are the Lower Load Stabiliser Straps?
2. How do you use the Load Stabiliser Straps?

Harness Shoulder Straps

1. What are the Harness Shoulder Straps?
2. What is the relationship between the Sternum Strap and the Shoulder Harness Straps?
3. What are Contoured or S shaped Harness Shoulder Straps?
4. How do you use the Harness Shoulder Straps?

Harness Hip Belt

1. What is the Hip Belt?
2. What is the correct position of the Hip Belt?
3. How do you use the Hip Belt?
4. What is a Hip Belt Cant?

Harness Sternum Strap

1. What is the Sternum Strap?
2. What is the correct position of the Sternum Strap?

Harness Foam

1. What is Open Cell Foam?
2. What is Closed Cell Foam?
3. What is Dual Density Foam?
4. What is Compression Moulded Foam?

Harness Frame Types

1. What is an External Frame Backpack?
2. What is an Internal Frame Backpack?
3. What is the function of the Internal Frame?

High Density Polyethylene (HDPE)

1. The HDPE Sheet

Backpack Material

1. What is Cotton Canvas?
2. What is Textured Nylon Material?
3. What is the Cordura Brand Material?
4. What is Pack Cloth Polyester?
5. What is Pack Cloth Nylon 6, Nylon6-6, and Rip-Stop Nylon?
6. What Stitching is used in backpack manufacturing?
7. What Zippers are used in backpack manufacturing?
8. What Thread is used in backpack construction?

Material Definition of Terms

1. Material Warp
2. Material Weft
3. Material Denier
4. Polyurethane
5. Material Tests

Backpack Compression Straps

1. What are External Compression Straps?
2. What are Sleeping Bag Compression Straps?
3. What are Internal Compression Straps?

How is a White Mountain™ Backpack Constructed?

1. What Materials is used in manufacturing these backpacks?
2. What Zippers are used in manufacturing these backpacks?
3. What Buckles and Hardware are used in these backpacks?
4. What Webbing is used in these backpacks?
5. What Reinforced Stitching is used in these backpacks?
6. What Thread is used in these Backpacks?
7. What stitching process is used in these backpacks?
8. How is the Backpack Length determined in these backpacks?
9. How is the Backpack Width determined in these backpacks?
10. How is the Backpack Depth determined in these backpacks?
11. How is the Internal Stave Positioning determined in these backpacks?

Backpack Rain Covers and Water Proofing

1. Are backpack materials waterproof?
2. Are the seams on backpacks Waterproof?
3. Are backpack Internal Liners necessary?
4. What is the purpose of Bivvy Bags or Zip Lock Bags?
5. Are Rain Covers necessary?