What Is a Corrugated Box - Key Features
A corrugated box is more than a shipping container. Here are the key features that make it the preferred choice for product protection and transport.
(1) Fluted structure for strength：The wavy inner layer (flute) provides crush resistance and absorbs impact during shipping.
(2) Lightweight yet durable：Corrugated board offers high strength-to-weight ratio. Reduces shipping costs while protecting contents.
(3) Stackable for storage：Designed to withstand vertical pressure. Allows safe stacking in warehouses and shipping containers.
(4) Customizable dimensions：Cut to fit your product exactly. No wasted space or excess filling material needed.
(5) Recyclable and eco-friendly：Made from renewable paper fibers. Fully recyclable and biodegradable after use.
Common Corrugated Box Types We Offer
Yucai manufactures various corrugated box styles to suit different products, shipping methods, and assembly needs.
Corrugated mailer boxes (airplane boxes)
One-piece folding box with self-locking flaps. No tape required for assembly. Ideal for e-commerce shipments, subscription boxes, and retail packaging.
Regular slotted cartons (RSC)
Standard box with all flaps the same length. Outer flaps meet at the center when closed. Common for general shipping, warehousing, and industrial use.
Lock-bottom boxes
Bottom flaps lock into place without tape. Box pops open and stays square for easy packing. Suitable for heavier products, glass bottles, and automated packing lines.
Custom die-cut shape boxes
Fully customized shapes based on your product dimensions and design. Any size, any flap configuration. Ideal for unique products, gift sets, and specialty packaging.
Flute Types & Board Construction
The flute type determines box strength, cushioning, and print surface. Yucai offers multiple flute sizes to match your product weight and shipping conditions.
(1) B flute：3mm thickness. Good puncture resistance and stacking strength. Common for shipping boxes and retail displays.
(2) C flute：4mm thickness. Good crush resistance and cushioning. Most common flute for general purpose shipping cartons.
(3) E flute：1.5mm thickness. Fine flute for high-quality printing. Suitable for small boxes, mailer boxes, and retail packaging.
(4) F flute：0.8mm thickness. Very fine flute. Used for small cosmetic boxes, pizza style boxes, and litho-laminated packaging.
(5) Double wall (BC flute)：Two fluted layers (B + C) for extra strength. Suitable for heavy products, industrial goods, and export shipping.
(6) Single wall vs double wall：Single wall (one flute layer) for lightweight to medium products. Double wall (two flute layers) for heavy or fragile items.
Printing & Surface Finishes for Corrugated Boxes
Beyond structural strength, surface finishes add visual appeal and brand presence. Yucai offers multiple finishing options for corrugated boxes.
Foil stamping
Metallic foil (gold, silver, rose gold, or custom colors) pressed into the box surface. Adds premium, high-end appearance. Suitable for retail packaging and gift boxes.
Spot UV coating
Glossy, raised coating applied to specific areas such as a logo or design element. Creates contrast against uncoated or matte surfaces. Adds visual interest without full coverage.
Embossing
Raised design elements pressed into the box surface. Adds tactile dimension. Common for logos, borders, or decorative patterns on retail corrugated boxes.
Window cutout (die-cut opening)
Clear plastic or open hole cut into the box surface. Allows customers to see the product inside without opening the box. Common for retail displays, pizza boxes, and gift packaging.
Interior Protection & Linings for Corrugated Boxes
What goes inside the box matters as much as the box itself. Yucai offers multiple interior lining options to secure products and enhance unboxing.
Foam inserts
Soft polyurethane foam cut to fit your product shape. Provides cushioning and shock absorption. Suitable for electronics, fragile items, and luxury goods.
EVA foam
Denser foam than polyurethane. Offers firm support and vibration resistance. Ideal for power tools, medical devices, and precision instruments.
Crinkle paper (shredded kraft)
Natural kraft paper shredded into curly strips. Lightweight and biodegradable. Fills empty space and adds a premium, eco-friendly look for gift boxes.
Corrugated dividers and pads
Cardboard partitions and protective sheets made from corrugated board. Separates multiple items in one box. Suitable for bottles, jars, food products, and wholesale packaging.
Application Scenarios - Where Corrugated Boxes Are Used
Corrugated boxes serve industries ranging from e-commerce to heavy manufacturing. Here are common scenarios where Yucai helps clients with custom corrugated packaging.
E-commerce and online retail
Mailer boxes and shipping cartons designed for direct-to-consumer delivery. Lightweight, stackable, and printable with brand logos for a professional unboxing experience.
Food and beverage packaging
Pizza boxes, produce trays, and takeout cartons. Food-safe materials available. Corrugated provides insulation and ventilation for fresh products.
Industrial and heavy machinery
Double wall or triple wall boxes for heavy parts and equipment. High edge crush resistance for stacking on pallets during warehouse storage.
Retail and point-of-sale displays
Corrugated trays and counter displays for product presentation. Print-ready surface accepts full graphics and branding for in-store marketing.
Moving and storage
Standard RSC boxes for household or office moves. Reinforced bottom construction for heavy items like books, kitchenware, and files.
Subscription box services
Custom die-cut mailer boxes with self-locking flaps. No tape needed. Consistent sizing for automated packing lines and monthly recurring shipments.
Why Choose Yucai for Corrugated Boxes
Many suppliers offer corrugated boxes. Here is what makes Yucai different - not the box features, but how we serve you as a manufacturing partner.
Flute and board combination flexibility
Most suppliers push only B or C flute. Yucai mixes flute types and wall constructions within the same order - E flute for small retail boxes, BC double wall for heavy shipping, all in one production run.
No die tooling fees for standard shapes
Many printers charge a separate die fee for every box style. Yucai waives tooling fees for RSC, mailer boxes, and lock-bottom styles - you pay only for the boxes.
Burst strength testing before shipping
Yucai tests each batch of board for edge crush and burst strength. We provide test reports with your shipment - no guessing if your boxes will stack or hold.
Small quantity, multiple sizes
Need 50 boxes in five different sizes? Yucai groups them into one production run. Other suppliers reject mixed-size orders or charge multiple setup fees.
Print on recycled board without upcharge
Most printers charge more for printing on recycled corrugated. Yucai prints on recycled and virgin board at the same price - no green premium.
Q: How do I know which flute type I need?
A: B and C flute for general shipping. E and F flute for small boxes and high-quality printing. Double wall for heavy or fragile items.
Q: Can you print inside the box as well as outside?
A: Yes. Interior printing available for boxes that open during unboxing. Common for retail and subscription boxes.
Q: Do you offer stock boxes for immediate purchase?
A: Yes. Yucai keeps common sizes in stock for quick shipment. Custom printing available on stock boxes.
Q: What is the maximum box size you can produce?
A: Yucai produces boxes up to 200cm in length. Larger sizes available for special orders - contact our team.
Q: How should I measure my product for a custom box?
A: Measure length, width, and height of your product. Add 1cm to each dimension for comfortable fit. Yucai provides free layout confirmation.
Q: Do you provide box templates for designers?
A: Yes. Free dieline templates in AI, PDF, or EPS format for all standard box styles and custom sizes.
