When a warp knitting machine begins to understand the human body, fabric design moves beyond simple weave patterns. KARL MAYER's new RJ 4/2 EL model integrates body mapping directly into the knitting system, shifting production logic from 'weaving a piece of fabric' to 'weaving a tailored component.'
Technology Focus: From Lace Machine to Smart Fabric Platform
The RJ 4/2 EL belongs to the RASCHELTRONIC® series, representing a functional deepening rather than an entirely new category. Its core breakthrough: the machine can achieve zonal structural designs within a single fabric based on pressure and breathability requirements of different body parts. Previously, such effects required post-weaving cutting or lamination; now, they can be formed in one continuous knitting process.
For lingerie makers, this means lace-edge elastic gradients, cup support meshes, and seamless side transitions can be completed on one machine. For sportswear brands, structural differences between muscle support zones and ventilation zones can be programmed directly, eliminating multi-layer fabric bonding.
Industry Impact: Design Control Shifts to the Machine
The direct consequence is that brands and designers gain greater control over fabric development, while traditional warp knitting mills may see their roles redefined. Previously, mills offered standard pattern catalogs from which brands selected; now, brands can bring body scan data and request zonal knitting, requiring mills to possess digital process conversion capabilities.
From a cost perspective, small-batch, multi-variety orders become more economical. Pattern changes no longer require stopping the machine to replace guide bars or chain links—only electronic program modifications. This benefits fast fashion and customized lingerie brands by reducing inventory pressure and shortening launch cycles.
However, challenges remain. Mills need to invest in equipment upgrades or personnel training to handle high-value-added orders. Small and medium factories unable to keep pace with digitalization risk being locked into low-margin conventional mesh and elastic fabric markets.
Supply Chain Implications: Buyers Must Re-evaluate Suppliers
For brand procurement departments, the RJ 4/2 EL's rollout means supplier selection criteria must update. Past focus on capacity and lead time now expands to include compatibility with digital design interfaces. Can brands directly provide 3D body models or pressure distribution maps? Can the factory's software parse this data and convert it into knitting instructions?
Additionally, fabric development cycles will shorten. Traditional processes require 2-3 sampling rounds, each taking 1-2 weeks. With electronically programmed warp knitting machines, first-sample success rates rise significantly, even enabling 'one programming, direct production.' This is a major advantage for fast-reacting cross-border e-commerce and DTC lingerie brands.