Removable Back Cushion: Load Capacity Up to 150 kg static

Component Specifications

Definition

A detachable upholstered cushion component specifically engineered for modular sectional sofa systems, providing lumbar and upper back support while allowing for individual removal for cleaning, replacement, or reconfiguration. This component typically features a foam core with varying density layers, wrapped in fabric or leather, and secured with hidden fasteners or zippers to maintain structural integrity during use.

Working Principle

Works by distributing body weight and pressure through multi-density foam layers to reduce fatigue, while the removable design utilizes hook-and-loop fasteners, zippers, or magnetic connectors to allow detachment without tools, enabling modular flexibility and maintenance access.

Materials

High-resilience polyurethane foam (HR foam) with density 30-50 kg/m³, wrapped in fire-retardant polyester fiberfill, covered with durable fabric (e.g., polyester, cotton blend) or genuine/synthetic leather, with reinforced stitching using nylon thread. Fasteners: YKK zippers or industrial-grade hook-and-loop strips.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	2-4 kg
Dimensions	Varies by module (typical: 50x60x15 cm)
Fire Rating	BS 5852/CA TB 117
Foam Density	30-50 kg/m³
Fastener Type	Zipper/Hook-and-loop
Load Capacity	Up to 150 kg static

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 2439, ISO 3758, DIN 68880

Parent Products

This component is used in the following industrial products

Modular Sectional Sofa System

Industrial-scale manufactured modular sofa system with interchangeable components for flexible seating configurations.

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Engineering Analysis

Risks & Mitigation

Foam degradation over time reducing support
Fastener failure leading to detachment
Fabric wear or staining from frequent removal

FMEA Triads

Trigger: Low-quality foam compression
Failure: Loss of ergonomic support and comfort
Mitigation: Use high-resilience foam with density testing per ISO 2439

Trigger: Zipper or fastener misalignment
Failure: Cushion detachment during use
Mitigation: Implement regular fastener inspection and use reinforced stitching standards

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5 mm in dimensions, foam density ±3 kg/m³

Test Method

ISO 2439 for foam hardness, ASTM D3574 for durability, and BS 5852 for fire resistance

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Removable Back Cushion

Manufacturer profiles associated with Removable Back Cushion.

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Related Components

Polyurethane Foam Cushion

Polyurethane foam cushion is a flexible cellular material used for seating comfort and support in modular sofa systems.

Side Rails

Side rails are structural components in seating module frames that provide lateral support and attachment points for other elements.

Edge Banding

Edge banding is a protective and decorative strip applied to exposed edges of furniture panels to conceal substrate materials and enhance durability.

Frequently Asked Questions

How do I clean a removable back cushion?

Remove the cushion via zipper or fasteners, spot clean with mild detergent and water, air dry completely before reattaching to prevent mold or damage.

Are these cushions interchangeable between sofa brands?

Typically not; cushions are designed for specific modular systems due to variations in dimensions, fastener types, and foam specifications. Check manufacturer compatibility guides.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Removable Back Cushion