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S-Shaped Hollow Board: Engineered for Load, Moisture, and Reuse
Zhejiang Zhapu Plastic Co., Ltd. is a specialized S-Shaped Hollow Board manufacturer and supplier based in Zhejiang, China. Since 2009, we have operated 9 extrusion lines and a full post-processing workshop to produce PP hollow sheets with an S-shaped (S-wave) core profile. These boards are used where flat twin-wall sheets lack the required vertical compression strength or where a textured surface improves grip and separation.
Our S-shaped hollow boards are available in standard, anti-static, conductive, and flame-retardant grades. They serve as floor isolation pads, protective separators, warehouse dividers, and structural inserts in reusable packaging. We supply cut-to-size sheets, die-cut components, and rolls, with thickness from 2.00 mm to 12.00 mm and width up to 2200 mm.
What Is an S-Shaped Hollow Board?
The S-shaped hollow board, also called S-wave or S-core PP board, has a corrugated core with continuous S-curved channels between two flat skins. Compared to standard rectangular flutes, the S-profile distributes vertical loads more evenly and provides higher resistance to compression and creep under sustained weight. The curved walls also improve energy absorption during impact, making the board suitable for protective packaging and floor isolation.
We produce S-shaped boards from virgin or recycled polypropylene (PP) resin, depending on your application and sustainability targets. The material is non-toxic, odorless, moisture-resistant, and fully recyclable. Our factory holds ISO 9001, ISO 14001, and GRS certifications, and all products pass SGS testing.
Product Range and Application Fit
We supply S-shaped hollow boards in several configurations. The table below summarizes the main types and their typical uses.
| Board Type | Core Profile | Typical Applications |
|---|---|---|
| Standard S-Wave Board | S-shaped channels | Floor isolation pads, packaging separators, pallet interlayers |
| Anti-Static S-Wave Board | S-shaped channels with conductive additive | Electronics packaging, cleanroom dividers, ESD-safe workstations |
| Flame-Retardant S-Wave Board | S-shaped channels with FR additive | Construction protection, public facility partitions, transport interiors |
| Custom-Printed S-Wave Board | S-shaped channels with water-based ink printing | Branded floor mats, advertising boards, instructional signage |
Engineering and Customization
We configure each S-shaped hollow board order around the working point, load requirement, and production target. Our engineering team specifies the correct thickness, sheet size, and material grade based on your application. We offer:
- Thickness range: 2.00 mm to 12.00 mm, with tolerance control to maintain flatness and flute integrity.
- Width capability: up to 2200 mm, with length cut to your exact dimensions or supplied in rolls.
- Color options: standard colors plus custom matching for brand identity or coding.
- Surface treatments: anti-static, conductive, flame-retardant, UV-resistant, and water-based ink printing.
- Post-processing: die-cutting, creasing, folding, box nailing, and edge sealing for finished components.
For floor isolation pads, we recommend a thicker board (5 mm to 10 mm) to absorb vibration and distribute point loads. For packaging separators, a lighter 3 mm to 5 mm board often provides sufficient cushioning while minimizing weight. Our team can suggest the optimal profile based on your product weight, stacking height, and handling environment.
Quality Assurance and Testing
We maintain a comprehensive quality inspection system from raw material intake to final shipment. Each batch of S-shaped hollow boards is tested for thickness, weight per square meter, compression strength, and surface appearance. Our factory has passed SGS testing, and we hold ISO 9001, ISO 14001, and OHSAS 18001 certifications. For specific requirements, we can provide test reports on request.
Our production lines are equipped with advanced extrusion technology, and in 2024 we introduced a water-based ink printing machine for hollow boards, the first environmentally friendly printing equipment of its kind in Zhejiang Province. This allows us to print directly on S-shaped boards without harmful solvents, meeting strict environmental standards.
Installation, Maintenance, and Service Life
S-shaped hollow boards are easy to install and maintain. For floor isolation, the boards can be laid directly on the subfloor and cut to fit around obstacles. For dividers or partitions, they can be fixed with screws, rivets, or adhesive. The boards are resistant to moisture, chemicals, and corrosion, so they require minimal upkeep. Cleaning is simple with water and mild detergent.
With proper handling, our PP hollow boards can be reused 50 to 100 times or more, depending on the application. This makes them a cost-effective alternative to single-use cardboard or wooden materials. We also provide guidance on stacking, storage, and cleaning to maximize service life.
Information We Use to Configure Your Solution
To prepare a precise quotation and technical proposal, we need the following information from your side:
- Application: floor isolation, packaging separator, divider, or other use.
- Dimensions: length, width, and thickness required (or we can recommend based on load).
- Load and stacking: expected static or dynamic load, stack height, and duration.
- Material grade: standard, anti-static, flame-retardant, or recycled content.
- Color and printing: specific color codes or artwork files if printing is needed.
- Quantity and packaging: annual volume, order frequency, and export packaging preferences.
- Compliance requirements: any certifications or test standards you need to meet.
With this data, we can confirm the board profile, material formulation, and post-processing steps. We also provide samples for pre-production approval before mass manufacturing.
Frequently Asked Questions
What is the difference between S-shaped and standard corrugated plastic board?
The S-shaped core has curved channels that provide higher vertical compression strength and better impact resistance compared to rectangular flutes. This makes S-shaped boards ideal for floor isolation and heavy-duty packaging where load-bearing is critical.
Can you produce S-shaped hollow boards with anti-static properties?
Yes, we offer anti-static and conductive grades by adding appropriate additives during extrusion. These boards are suitable for electronics packaging and cleanroom applications where static discharge must be controlled.
What is the maximum width you can manufacture?
Our extrusion lines can produce S-shaped boards up to 2200 mm in width. Length is virtually unlimited, and we can supply cut-to-size sheets or rolls depending on your handling and shipping requirements.
Do you provide samples before bulk production?
Yes, we can send samples of our standard S-shaped boards for evaluation. For custom formulations or printing, we can produce a pre-production sample after confirming the technical specifications.
Are your S-shaped hollow boards recyclable?
Yes, our boards are made from polypropylene, which is 100% recyclable. We also offer options with recycled content and hold GRS certification to support your sustainability goals.
What industries commonly use your S-shaped hollow boards?
They are used in electronics, automotive, logistics, construction, agriculture, and furniture industries. Common applications include floor protection during construction, reusable packaging separators, and anti-vibration pads for machinery.
As a dedicated S-Shaped Hollow Board supplier, we combine manufacturing experience with responsive engineering support. Contact our team with your project details, and we will provide a configuration and quotation tailored to your operation.
