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Composite PP Warm Edge Spacer Bar
Composite PP Warm Edge Spacer Bar adopts modified‑PP polymer compounded with thin stainless steel foil via co‑extrusion craft. It delivers low equivalent thermal conductivity to mitigate glass‑edge cold‑bridge effect. Full‑range sizes and accessory matching schemes are available for residential and commercial insulating‑glass project purchasers worldwide
Features
Renqiu City Xinjian Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of composite pp warm edge spacer bar 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 pp warm edge spacer bar from our factory. Also, free sample is available.
Product Information
Material & Model Specifications
This composite PP warm edge spacer bar is manufactured from high‑toughness modified polypropylene substrate, compounded with thin‑gauge 304 stainless‑steel foil through continuous hot‑cold co‑extrusion forming. The modified‑PP matrix brings ultra‑low thermal‑conductivity performance, while stainless‑steel foil acts as critical water‑vapor‑barrier layer. Equivalent thermal‑conductivity value reaches λ=0.16 W/(m·K), meeting core performance baseline for energy‑saving architectural glazing components. Available main‑stream sizes cover 6‑27 serial integer‑size models, matching diversified IGU cavity‑width requirements for residential windows and commercial curtain‑wall projects. Each specification corresponds to fixed meterage per export carton. Matching accessories including plastic corner keys and gas‑filling plugs can be supplied in bundled packages upon project tender demands. Product performance complies with EN 1279‑2/3/6 international standards and JC/T 2453‑2018 domestic warm‑edge‑spacer specification.
Production Craft Highlights
Complete manufacturing workflow: raw‑material proportioning → co‑extrusion compounding → profile shaping → molecular‑sieve‑filling hole punching → offline static stress‑release aging → multi‑item visual and physical inspection → finished‑goods packaging. Modified‑PP particles and stainless‑steel foil are fed synchronously into co‑extrusion equipment, achieving tight interfacial combination under controlled temperature and extrusion pressure. This integrated forming process reduces hidden‑risk caused by post‑adhesive‑bonding procedure. Evenly distributed punching holes are reserved for 3A molecular‑sieve filling, ensuring stable moisture‑absorbing capacity over long service cycle. Semi‑finished‑products go through static aging treatment to release internal extrusion stress, restraining later‑stage warping and twisting risk under repeated temperature‑cycling environment. Every finished bar passes appearance screening, eliminating surface scratch, foil‑delamination and hole‑blocking defects before packing.
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Remarkable anti‑condensation & energy‑saving performance: Low equivalent thermal‑conductivity greatly suppresses cold‑bridge transfer at insulating‑glass edge, lifting inner‑surface temperature of IGU units and cutting down dew‑drop and mold‑growing risks for residential and commercial building glazing.
Balanced mechanical property: Modified‑PP material brings proper rigidity and bending ductility. It adapts to diversified project‑site processing solutions including hot‑bending, cold‑bending and corner‑key assembling.
Reliable weather‑resistance: Stainless‑steel foil barrier provides stable moisture‑blocking performance. Composite matrix resists ultraviolet irradiation and wide‑range temperature fluctuation, suitable for temperate zones, subtropical humid regions and general coastal projects.
Broad sealant compatibility: Maintains stable adhesive performance with hot‑melt butyl sealant, neutral silicone structural sealant and polysulfide sealant, matching mainstream double‑seal technical routes of global architectural insulating‑glass industry.
Comprehensive economic benefit: Comparing with fully‑non‑metallic fiberglass‑reinforced warm‑edge products, composite PP warm‑edge spacer delivers favorable cost‑performance ratio for large‑scale residential renovation and commercial general‑grade energy‑saving projects.
Buyer FAQ
Q:1.What is the core distinction between composite PP warm‑edge spacer and fiberglass‑reinforced fully‑non‑metallic warm‑edge spacer for building projects?
A:Composite PP warm‑edge spacer adopts PP‑stainless‑steel‑foil composite construction, presenting prominent cost‑performance advantage for general residential and commercial projects. Fiberglass‑reinforced type owns closer‑to‑glass thermal‑expansion coefficient, more suitable for super‑large‑format triple‑glazing and high‑requirement passive‑house projects. Clients shall select according to project grade and local climate condition.
Q:2.Does composite PP warm‑edge spacer require special reconstruction for existing insulating‑glass production‑lines?
A:No special equipment reconstruction is needed. It supports conventional corner‑key assembling and heating‑bending workflows. Operators only need to fine‑tune heating‑temperature parameters according to material characteristics.
Q:3.Can you supply complete technical‑documents for overseas tender‑evaluation?
A:We can offer factory‑origin test reports. If third‑party‑certified test records are demanded, we accept client‑assigned‑lab testing service with testing‑cost covered by purchasers.
Q:4.How is long‑term service‑life performance in coastal humid environment?
A:Stainless‑steel‑foil barrier provides moisture‑resistant capacity. For long‑term coastal projects, customers must adopt qualified butyl sealant and 3A molecular sieve to maximize overall service‑life of finished insulating‑glass units.
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