Paper Corner Protectors Manufacturers, Paper Edge Protectors Suppliers

Paper Corner Protectors From an Integrated Cargo Protection Manufacturer

Shanghai We Pack Co., Ltd. manufactures paper corner protectors and paper edge protectors for exporters, panel and appliance producers, coil and pipe shippers, and packaging distributors working in sea, road and multimodal transport. Founded in 2019 as a subsidiary of Shanghai Dreammao Packaging Technology Co., Ltd., we run paper edge protection as one of our core product families alongside container dunnage air bags and lashing systems.

The range covers nine profiles — L-shaped, U-shaped, ring-shaped, interlocking, folded U-shaped, folded L-shaped, flat, perforated and white — formed from recycled paper board. Each profile answers a different corner geometry and a different loading method, so configuration starts with the cargo and the way it is stacked, strapped and secured rather than with a catalogue number.

10,000 m² manufacturing facility, 120 employees and 9 production lines
Dedicated R&D, testing and quality control teams
Core families: paper edge protectors, container dunnage air bags, lashing systems
Extended portfolio through joint ventures and industrial collaboration: paper and plastic pallets, slip sheets, carton sealing tapes, bubble wrap, stretch film, strapping and packaging equipment
Products comply with AAR, SGS, TUV and other international transport test standards
OEM / ODM customization with free packaging solution planning

The Paper Corner Protector Range We Supply

Profiles are grouped by how they contact the load. Angle profiles protect a single edge, enclosing profiles wrap the corner, ring profiles cushion a full circumference, and flat or perforated boards protect faces and accept strapping. The table below maps each profile to its working geometry and the cargo it is normally specified for.

Profile	Geometry	Application fit	Typical cargo
L-shaped	Two-leg 90° angle	Standard edge reinforcement under strap tension and stacking load	Cartons, panels, furniture, appliances
U-shaped	Three-sided wrap	Protruding corners and bundling of several items into one unit	Pipes, bundles, frames, profiles
Ring-shaped	Full-perimeter ring	360° edge cushioning against dents, scratches and abrasion	Coils, rolls, tubes, columns
Interlocking	Tab-and-slot fastening	Quick assembly on palletized loads and returnable frames	Palletized cartons, equipment
Folded U-shaped	Folded, enclosing wrap	Full coverage where the corner must be enclosed on all faces	Machinery, panels, frames
Folded L-shaped	Folded angle with flap	Reinforced edge plus enclosing flap for exposed corners	Furniture, doors, cabinets
Flat	Flat sheet	Face and surface protection, layer separation in a stack	Panels, glass, sheet goods
Perforated	Perforated board	Mount-ready, strap pass-through integration on crates and frames	Strapped loads, crates
White	White finished board	High-visibility presentation and moisture-resistant grades	Retail goods, food, chilled cargo

Matching Profile Geometry to the Load

The corner is the first point of contact in a stack and the first place damage appears. Crushing, abrasion and stacking marks concentrate there, and the profile has to spread that load over enough board area that the carton or panel face is not cut or deformed.

L-shaped profiles suit square corners on cartons, panels and furniture where the strap runs over the edge. The L-shaped Paper Corner Protector is the standard choice for carton reinforcement and palletized furniture.
U-shaped and folded U-shaped profiles wrap three faces, which holds bundles of pipes, profiles or frames together and protects corners that protrude beyond the pallet footprint.
Ring-shaped profiles cushion a full circumference and are specified for coils, rolls, tubes and columns where the edge must be protected through 360°.
Flat and perforated boards protect faces and layers, and give strapping a reinforced path across the corner instead of cutting into the packaging.
Interlocking profiles assemble without tools on palletized loads and returnable frames, which shortens packing time on repetitive lines.
White and moisture-resistant grades are used where presentation matters or where condensation is present, such as chilled and humid routes.

Board Construction and the Specifications That Decide Performance

A paper corner protector is a board product, and its performance comes from the board. We form and cut recycled paper so the legs hold their shape under strap tension and stack weight, and so the cut edge stays clean through handling.

Leg length and angle — matched to the corner radius and the path the strap or film takes over the edge
Board caliper and ply build — sets stiffness, edge crush resistance and how the protector behaves under sustained load
Overall length — full edge height for continuous protection, or a shorter cut for spot reinforcement
Inside diameter and wall thickness — for ring profiles fitted to coils, rolls and tubes
Surface finish — natural kraft or white coated, depending on presentation and moisture exposure
Printing — logo, handling symbols and part numbers applied during production

Because the protector sits between the cargo and the strap, the working point is the combination of strap tension, stack weight and transit vibration. We size the board to that working point rather than to a nominal thickness alone.

Integration With Strapping, Dunnage and Unitizing

Corner protectors rarely travel alone. In a container or trailer they work as part of the securing system, and the profile is chosen so the other components still do their job.

Strapping — perforated and flat profiles let PP or PET strap pass over the protector without cutting into the carton edge; protector width is matched to strap width.
Dunnage bags — Dunnage Bag void fillers hold the load against the container wall while protectors take the edge load at the contact points.
Slip sheets and pallets — protectors keep palletized units from crushing at the corners during push-pull handling.
Stretch film and anti-slip paper — unitizing layers that keep the stack square so the protector stays in position in transit.
Lashing systems — ratchet tie-downs and woven straps bear against protectors at frame and rail contact points.

Customization, Printing and OEM/ODM Support

We support OEM and ODM work on size, board grade, load capacity, surface finish and printing. A drawing or a physical sample is enough to start, and the same process carries through to repeat volume.

Custom leg lengths, angles and overall lengths for non-standard cartons, frames and coils
Board grade and ply build selected against the stated load requirement
White or printed finishes for retail-facing and branded packaging
Logo, handling symbols and part numbers printed on the protector
Free packaging solution planning based on cargo type, loading method, load requirement, budget and printing needs
Trial quantities from 100 pieces, produced on the same lines as volume orders

Quality Control and Acceptance Evidence

Quality control runs from incoming paper to the packed pallet. Our own laboratory, advanced testing equipment and third-party institutions such as SGS and TUV form a three-tier verification system, and our management system is ISO 9001 certified.

Incoming paper checked for caliper, grammage and moisture before forming
In-line control of angle, leg length, cut quality and board integrity
Moisture content controlled for export packing, since board that takes on water loses stiffness inside a container
Compression and edge-crush testing on the finished profile
Third-party test reports available for project acceptance
Batch traceability from raw material through to the finished carton

Products comply with AAR, SGS, TUV and other international transport test standards. Where a project needs documented acceptance, we agree the test method and sampling plan with the customer before production begins.

Production Capacity and Delivery Scope

Paper corner protection has been produced in a dedicated facility since 2023, and the group's 9 production lines support both frequent customization and repeat volume. Company-wide annual output exceeds 20,000 tons across the portfolio, with workshops partitioned by product and process.

9 production lines across the group, covering material handling, forming, cutting, assembly and packing
Dedicated paper corner protection production since 2023
Standard export packing: bundled, strapped and palletized, or bulk cartons for container fill
Trade terms including EXW, FOB, CIF and DDP
Export documentation prepared against destination requirements

Information We Use to Configure Your Solution

A workable configuration comes from the load, not from a catalogue number. These are the inputs we work from when preparing a profile recommendation, board build and quotation.

Cargo — type, weight per unit, dimensions and stack height
Corner geometry — edge radius, angle, and whether the corner is square or rounded
Loading method — palletized, floor-loaded, push-pull, racked or bundled
Securing method — strap type and width, dunnage bags, lashing, stretch film
Transit conditions — sea, road, rail or multimodal, including chilled, humid or long-dwell routes
Dimensions — required leg length, board thickness and protector length, or a drawing or sample
Finish and printing — kraft or white, logo, handling marks, part numbers
Volume and budget — per-shipment or annual quantity and the target cost position
Destination requirements — documentation, labelling and any test report needed for acceptance

Send those details and we return a profile recommendation, board build and packing plan. Our Paper Corner Protector manufacturer team works from the same inputs whether the order is a trial pallet or a repeat container programme.

Frequently Asked Questions

What paper corner protector profiles does Shanghai We Pack manufacture?

Nine profiles: L-shaped, U-shaped, ring-shaped, interlocking, folded U-shaped, folded L-shaped, flat, perforated and white. They are formed from recycled paper board and cover square corners, protruding corners, cylindrical goods, faces and strapped assemblies.

Can you produce corner protectors to our own dimensions and board thickness?

Yes. We work from drawings or physical samples and adjust leg length, angle, overall length, board caliper and ply build to the load requirement. Printing of logos, handling symbols and part numbers is handled in the same production run.

How do paper corner protectors work with strapping and dunnage bags?

The protector spreads strap tension across the corner so the strap does not cut into the carton or panel, and perforated or flat profiles give the strap a defined path. Dunnage bags then fill the void between the load and the container wall, so the edge load stays on the protector rather than on the cargo face.

What is the minimum order quantity for a trial?

Trial orders start from 100 pieces, which lets a project validate fit and performance before committing to volume. Larger and repeat orders run on the same lines and the same process controls.

What testing and documentation supports a paper corner protector order?

Our own laboratory, testing equipment and third-party institutions such as SGS and TUV form a three-tier verification system, and our management system is ISO 9001 certified. Products comply with AAR, SGS, TUV and other international transport test standards, and test reports can be issued for project acceptance.

How are paper corner protectors packed for export?

Standard export packing is bundled, strapped and palletized, with bulk cartons available where the goods are used for container fill. Moisture content is controlled before packing so the board arrives with its stiffness intact.