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Composite Warm Edge Spacer
Composite Warm Edge Spacer adopts high‑flame‑retardant polymer and 304 stainless steel via cold‑hot co‑extrusion process. It delivers ultra‑low thermal conductivity to minimize edge condensation for insulating glass units. Optimized for passive house and NZEB construction projects, full‑size range and custom solutions are available for global engineering purchasers
Features
Renqiu City Xinjian Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of composite warm edge spacer in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale customized composite warm edge spacer from our factory. Also, free sample is available.
Our composite warm edge spacer combines high‑insulation, flame‑retardant polymer material and 304‑grade stainless steel through integrated cold‑hot co‑extrusion forming. Available models cover 5.5A‑26.5A, including both integer and half‑size specifications to match diverse insulating‑glass cavity width requirements. Each specification corresponds to fixed loading meterage per export carton: for instance, 5.5A reaches 1650m per carton, 10.5A reaches 1000m per carton, 17.5A reaches 610m per carton, 23.5A reaches 420m per carton. Matching accessories including straight plugs and corner crosses can be supplied in supporting packages according to project demands. Its thermal conductivity hits λ=0.16 W/(m·K), which meets core material indicators for passive‑house building components
The whole manufacturing workflow strictly follows co‑extrusion compounding → profile shaping → hole punching → offline aging treatment → multi‑item visual & physical inspection → finished‑goods packaging. High‑precision co‑extrusion equipment realizes tight combination between polymer substrate and thin stainless‑steel barrier layer, avoiding delamination risk under long‑term temperature fluctuation. The stainless‑steel layer serves as dense water‑vapor barrier, slowing moisture permeation into insulating‑glass cavity. Uniformly distributed punching holes are reserved for 3A molecular‑sieve filling, securing stable moisture‑absorbing performance throughout the long service cycle. Semi‑finished goods will go through static aging procedure to release internal stress, so finished spacers maintain excellent flatness and dimensional stability under complicated outdoor temperature‑alternating environment
Performance Advantages & Core Features
Outstanding thermal‑insulating performance: ultra‑low thermal conductivity greatly cuts down heat transfer at glass edge zones, effectively lifting inner‑surface temperature of insulating glass and restraining dew‑drop and mold‑growing risks, which is the core advantage compared with conventional all‑aluminum spacers
Reliable long‑term durability: composite structure can sustain 10‑20‑year service life for IGU assemblies. It resists aging caused by ultraviolet radiation and large‑range temperature swing, suitable for severe cold zones, subtropical humid zones and coastal salt‑spray areas
Good flame‑retardant & noise‑reduction property: high‑flame‑retardant polymer raw material improves fire‑safety performance for building envelopes; composite‑layer structure helps weaken acoustic transmission, boosting noise‑reduction effect for whole window assemblies
Broad sealant compatibility: it keeps stable adhesion performance with polysulfide sealant, neutral silicone structural sealant and hot‑melt butyl sealant, fitting mainstream double‑sealing technical routes of global insulating‑glass industr
Fine processing adaptability: supports hot bending, cold bending and insert‑corner assembling craft, matching varied on‑site processing solutions for engineering projects
product key technologies
OEM / ODM Customization Service
We deliver multi‑level custom support for large‑scale construction‑project orders. Customizable scope includes special‑size profile adjustment within technical feasibility, outer‑carton logo and project‑code printing, matched‑accessory proportion configuration. Surface color can be adjusted under feasible technical range. MOQ for customized items will be re‑confirmed according to specific modification content. Standard stock specifications can realize rapid delivery without extra mould‑opening expense
Application Scenarios
Mainly oriented toward passive‑house projects, near‑zero‑energy‑building (NZEB) new construction and energy‑saving renovation projects. Widely adopted in high‑end residential doors & windows, public‑building curtain‑walls, low‑energy office buildings and passive sun‑room glazing components. Suitable for double‑glazing, triple‑glazing and low‑E coated insulating‑glass units. Target clients cover international engineering contractors, large‑size glass‑processing consortiums and building‑material import distributors focusing on green‑building materials
Finished goods adopt export‑grade corrugated carton packaging. Each carton is marked with clear model, meterage quantity, accessory matching quantity and batch‑number information. Inner cushioning material avoids extrusion deformation and surface scratch during sea‑land combined transportation. We calculate loading capacity for 20GP and 40GP containers based on project order volume. Trade terms include EXW, FOB, CIF. Goods will be arranged for shipment after deposit confirmation within agreed lead‑time
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