Duvet Insert Manufacturing Crafts (Simple English Version)

1. Shell Fabric Crafts

• Down-proof woven fabric treatment
• Fabric pre-washing, anti-mite & antibacterial finishing
• Automatic fabric cutting
• Edge sewing, corner tie loops sewing, label attaching

2. Filling Processing Crafts

• Down/Polyester fiber washing, high-temp sterilization & drying
• Air sorting, fiber carding & fluffing
• Quantitative automatic filling into each chamber

3. Core Quilting & Chamber Construction (Main US Market Styles)

1. Sewn-through box stitching (budget mainstream): Stitch top & bottom fabric directly into square/channel grids
2. Baffle box construction (premium): Add internal fabric baffles to make 3D chambers, no cold spots, fill anti-shifting
3. Channel stitching: Long vertical/horizontal strips, softer & cheaper

4. Post-finishing Crafts

• Edge binding & double reinforced stitching
• Vibration filling distribution adjustment
• Defect inspection, thread trimming
• Compression vacuum packing

Standard Sizes (W × L)

1. Twin: 66″×86″
2. Twin XL: 66″×92″
3. Full: 86″×86″
4. Queen: 90″×92″
5. King (Eastern King): 106″×90″
6. California King: 104″×96″

Popular Combo Sizes for E-commerce

1. Twin/Twin XL: 68″×90″
2. Full/Queen: 90″×94″
3. King/Cal King: 107″×98″

Extra Large Custom Sizes (Niche)