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Cardboard Auto-Lock Bottom Box - one fold assembly
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Space Saving
Auto-Lock Bottom
500 pcs MOQ
10-15 Days Lead

Product Video

Product Video Preview
Auto-Lock

Cardboard Auto-Lock Bottom Box

Premium cardboard auto-lock bottom boxes feature an innovative one-fold instant assembly structure. Simply fold the pre-scored panels and the bottom locks automatically — no glue, no tape, no labor cost. Ships flat to save storage and shipping space, assembles in seconds.

One-fold design reduces assembly labor costs by up to 70%.

$0.10 - $4.00 / pc

FOB China Port · Price varies by size, material & quantity

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Price Range$0.10 - $4.00 / pc
MOQ500 pieces
MaterialCardboard 250-400gsm
StructureAuto-Lock Bottom (One-Fold Assembly)
FinishingGloss/Matte/Soft-Touch Lamination, Foil, Emboss
Lead TimeStandard: 10-15 business days | Rush: 7-10 days (+15-20% surcharge)
ShippingSea 20-35 days / Air 5-7 days / Express 3-5 days / Railway 15-25 days
Payment30% deposit, 70% before shipment (T/T, PayPal, L/C)
PortsAny Port in China Available

Supply Chain Certification Support

Quality Assured
FSC materials available upon request
Quality testing available upon request

Technical Specifications

Feature

Auto-Lock Bottom, One-Fold Assembly

Material

Cardboard 250-400gsm (White/Kraft/Special)

Shipping

Flat-packed, space-saving

Durability

Holds up to 3kg when assembled

Printing

CMYK, Pantone, Foil Stamping

Finishing

Gloss/Matte/Soft-Touch, Emboss, Spot UV

MOQ

500 pieces

Lead Time

10-15 business days

Packaging

Flat-packed, 300-500pcs/carton

Gloss Lamination

High-shine reflective finish for vibrant colors and premium look.

Matte Lamination

Soft-touch elegant finish with anti-scratch properties.

Foil Stamping

Gold, silver, or metallic foil for luxury branding effects.

Embossing

Raised patterns for tactile premium feel and brand texture.

Spot UV

Highlight specific areas with glossy UV coating contrast.

Soft-Touch

Velvety texture for ultra-premium unboxing experience.

Quick reference for commonly requested sizes. Custom sizes available upon request.

150×100×50 mm

Cosmetics, Small Gifts, Accessories

200×150×80 mm

Jewelry, Food, Small Retail

250×180×100 mm

Cosmetics, Health Products

300×200×120 mm

Electronics, Apparel, Books

350×250×150 mm

Home Decor, Larger Retail

400×300×180 mm

Heavy Items, Bulk Products

Common Mistakes to Avoid

Wrong Cardstock Weight

Key Consideration: Too thin cardstock (under 250gsm) won't hold the auto-lock shape.
Tip: Match weight to box size — larger boxes need 350-400gsm minimum.

Incorrect Fold Score Depth

Key Consideration: Improper scoring causes cracking or boxes that won't fold flat.
Tip: Request test folds before bulk production.

Overfilling the Box

Key Consideration: Auto-lock bottoms have weight limits when assembled.
Tip: Specify product weight for reinforced auto-lock option.

Humid Storage Conditions

Key Consideration: Flat storage in damp conditions may affect cardstock integrity.
Tip: Store in dry environment, consider moisture-resistant coating.

500+ Clients
80+ Countries
10M+ Boxes Delivered
24h Response
Quality Assured

Finishing Options

Auto-Lock Bottom Box Finishing Options

Production Process

Production Process

Factory Production Video

Factory Video Preview

Shipping & Packaging

300-500 units per carton. Flat-packed for maximum space efficiency during shipping.

Packing Shipping

Supply Chain Capabilities

Daily Capacity

80,000+ pieces per day. Scale production to meet your demands.

Clients Served

500+ B2B clients worldwide. Trusted by global brands.

Global Export

Exported to 80+ countries. Reliable international shipping.

24/7 Support

2-hour response guaranteed. Dedicated account manager.

Why Choose EcoPacki

See how EcoPacki stands out from other packaging suppliers.

FeatureEcoPackiOthers
One-Fold Auto-Lock Yes (Instant Assembly)Requires glue/tape
Free Plain Samples Yes (shipping applies)Charge for samples
Sample Refund 100% refundableOften not refundable
Response Time 2 hours2-5 business days
Design Consultation Free expert adviceExtra charge or none
Quality Assurance Quality AssuredVaries significantly
MOQ Flexibility From 500 pcsOften 1000+ pcs
Global Shipping 80+ countriesLimited regions

Perfect For

Premium Retail
Food & Beverage
Gift Sets
Cosmetics
Health Products
Electronics
Books & Media
Apparel

Frequently Asked Questions

What is an auto-lock bottom box?
An auto-lock bottom box features pre-scored fold lines on the bottom panels. When you fold the sides inward and push down, interlocking tabs automatically lock into place — forming a sturdy base without glue or tape. One simple fold and it's ready.
What materials are used for auto-lock bottom boxes?
Auto-lock bottom boxes are made from cardboard 250-400gsm including white cardstock, kraft cardstock, and specialty papers. The cardstock weight is selected based on box size and intended use.
What is the weight capacity of auto-lock bottom boxes?
Our auto-lock bottom boxes support up to 3kg depending on cardstock thickness and box dimensions. For heavier products, we recommend 350-400gsm cardstock with reinforced corners.
What printing and finishing options are available?
We offer CMYK offset printing, Pantone color matching, foil stamping (gold/silver/rose gold), embossing, debossing, spot UV, and lamination options including gloss, matte, and soft-touch finishes.
What is the minimum order quantity?
MOQ is 500 pieces for standard sizes. For custom sizes or materials, MOQ starts at 1,000 pieces. Sample orders of 5-10 pieces are available for quality verification.
How are auto-lock bottom boxes shipped?
Auto-lock bottom boxes ship flat (knocked-down) to maximize space efficiency. This reduces shipping costs by up to 60% compared to pre-assembled boxes. Assembly takes just one second per box.
Can I customize the box with my logo?
Yes! We offer custom logo printing via offset or flexographic printing. Premium branding options include foil stamping, embossing, and debossing for a distinctive luxury look.
Are auto-lock bottom boxes eco-friendly?
Yes, our auto-lock bottom boxes are made from recyclable cardstock with water-based inks. FSC-compliant materials are available upon request. No glue or tape needed during assembly makes them cleaner to produce and easier to recycle.
What is the production lead time?
Standard production takes 10-15 working days. Sample production is 5-7 days. Rush orders (7-10 days) are available with 15-20% surcharge.
What industries use auto-lock bottom boxes?
Auto-lock bottom boxes are popular for cosmetics, food packaging, retail, pharmaceuticals, electronics accessories, apparel, and gift packaging. Their space-saving flat shipping and instant assembly make them ideal for e-commerce and retail packaging.

🎁 New Customer Offer

First-time customers get exclusive benefits:

Sample $30-100

Plain sample + shipping applies

5% Off

First bulk order discount

Free Design

Professional dieline assistance

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