This technical solution is customized for the client’s tailored CR double-sided gloss panel with no interlayer and no adhesive backing.The product is specified with a dimension of 750*750mm,a thickness of 1±0.1mm,and a Shore A hardness of 50±5.The mandatory mechanical performance thresholds include a minimum tensile strength of 1000 lbs per square foot and a minimum elongation at break of 1.65.Through systematic laboratory formula debugging,process optimization and performance verification,our team has developed a fully compliant production scheme to address core concerns including optimal CR content ratio,batch color difference risk,dimensional tolerance control and full-index performance compliance,ensuring stable and consistent product quality.
CR(chloroprene rubber)content is the core factor determining the product’s hardness,toughness and mechanical properties.After multiple groups of proportional tests,the optimal CR content for this customized panel is confirmed to be 68%-72%.This ratio forms a balanced material structure with matched reinforcing fillers,softeners and vulcanizing additives,perfectly stabilizing the Shore A hardness within the standard range of 45-55.If the CR content is lower than 68%,the base material will suffer from insufficient toughness,leading to substandard tensile strength and elongation at break.In contrast,CR content exceeding 72%will result in overly soft texture,poor forming stability,and out-of-tolerance thickness,which fails to meet the double-sided gloss surface flatness requirements.This optimized formula also realizes the homogeneous integrated structure of the panel,fully adapting to the non-interlayer and non-adhesive design.
Batch color difference is a key concern for mass production,and we have formulated targeted control measures to eliminate visible color deviation.CR raw rubber,as a polymer synthetic material,has slight inherent color differences in raw batches,and conventional factors such as inconsistent vulcanization temperature,mixing duration and auxiliary material batches may also cause color deviation.To solve this problem,we implement full-process standardized control.First,we fix qualified raw material suppliers and unified procurement standards for CR rubber,color masterbatch and additives to eliminate fundamental color differences.Second,we adopt closed constant-temperature mixing technology with unified parameter settings for mixing temperature,rotating speed and duration to ensure uniform glue mixing for all batches.Third,we establish a standard color card and conduct unified light source comparison inspection before delivery,controlling the color difference valueΔE≤1.5 to achieve invisible batch color difference to the naked eye.
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Strict tolerance control and performance verification ensure all client specifications are fully satisfied with sufficient performance redundancy.In terms of dimensional accuracy,750*750mm finished products are processed by precision die-cutting and CNC cutting equipment,with length and width tolerance controlled within±0.5mm.For the core thickness requirement of 1±0.1mm,we adopt integrated constant-temperature calendering and shaping cooling technology,with real-time thickness monitoring and precise roller gap adjustment,achieving a 100%qualified rate of thickness tolerance and effectively avoiding uneven thickness and edge warping.The Shore A hardness is stably locked at 50±5 through precise formula ratio and standardized vulcanization process.
Laboratory test data verifies the excellent mechanical performance of the product.By adding special reinforcing carbon black and elastic additives,the molecular structure compactness of the CR base material is significantly improved.The actual tensile strength of finished products stably ranges from 1050 to 1150 lbs per square foot,which is higher than the minimum standard of 1000 lbs per square foot.The elongation at break is steadily maintained at 1.70-1.85,exceeding the minimum threshold of 1.65.In addition,the double-sided polishing process endows the panel with high-gloss mirror surface effect,and the integrated forming process without interlayer lamination and adhesive backing completely meets the client’s structural and appearance requirements.
In conclusion,the customized CR double-sided gloss panel can fully meet all dimensional,tolerance,appearance and mechanical performance requirements.The optimized CR formula and full-process quality control system completely eliminate common quality risks such as batch color difference and parameter deviation,ensuring outstanding production stability and batch consistency for long-term mass supply.
Jingdong Rubber Co., Ltd. is a professional rubber sheet manufacturer, producing silicone rubber sheet, natural rubber sheet, fluorine rubber sheet, neoprene rubber sheet, insulating rubber sheet,EPDM rubber sheets, oil-resistant rubber sheets, anti-static rubber sheets, flame-retardant rubber sheets, conductive rubber sheets, anti-slip rubber sheets, and cowshed mats, etc. with over 40 years of industry experience, are popular both at home and abroad. If you need any of our products,please send emails to ventas@jingdongrubber.com.