Knitting Technology Developments | Textile World

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Our, Welsh, loop, specification, warp, weft, raschel, knit, interlock... are just some of the terms familiar to the knitting industry workers. There are many types and sizes of weaving technology, which can be used to manufacture various products from small vascular heart grafts

From shoe uppers and clothing fabrics, to large bedding components, and anything in between that requires comfort, elasticity, and seamless styling, and other attributes.

Since ITMA 2019-ITMA has generally paved the way for new innovations-despite the difficulties in the machinery market due to the pandemic, manufacturers of knitting technology are still innovating and helping their customers provide value. Here are some new products available for weavers.

After completing the field test, Germany-based Mayer & Cie reported that its OVJA 2.4 EM circular knitting machine is now available on the market. The fully electronic model is specially designed for high-volume mattress cover fabrics with a variety of patterns. This ready-to-market version builds on the model introduced during ITMA 2019, adding a new thread fluctuation control system to every other feeder. The controlled airflow maintains a constant yarn tension, especially at high revolutions per minute, which helps to avoid loops and thread drops.

Mayer & Cie’s regional sales manager Thomas Zizmann said: “At a feeder density of 2.4, OVJA 2.4 EM fits the current trend of higher feeder density, which can achieve higher productivity. The output of OVJA 2.4 EM can reach 30 kg. The number of fabrics per hour. It turns out that it is the most productive machine of its kind in the world, as shown by its 950 speed factor."

According to Mayer & Cie, knitted fabrics are relatively new in the mattress market and have stood out in the past 20 years, partly because of their elasticity and flexibility. However, the market is becoming increasingly competitive, Mayer & Cie. The goal is to add value to its customers (mainly American and Belgian high-end manufacturers in this field) by increasing the output of its mattress machines.

Mayer & Cie also provides OVJA 1.6 EE / 2 WT double-sided knitting jacquard machine for multi-color design and micro-structural elements, including pleated structures, spacer fabrics and double-layer knitted fabrics with embedded threads. The machine has a three-way electronic needle selection function in the needle barrel and a two-way technology in the rib dial. When using special needles, the machine can knit up to 1200 denier yarns up to E16. Applications include mattress covers, upholstery, transport seat covers, shoe uppers and outerwear.

To comply with the digital trend, Mayer & Cie. It also provides cloud and network-based digital solutions for the knitting industry through its knitlink technology. knitlink records the data on each machine and provides operators with visual data records on a personalized dashboard.

The company stated that my.shop recently opened in selected countries and will provide a wide range of spare parts online shops in the near future. Other functions are also under development.

In terms of business, Karl Mayer Textilmaschinenfabrik GmbH in Germany acquired H. Stoll Ag & Co. KG in 2020. , This is a fixed name in the field of flat knitting machines. The acquisition expanded Karl Mayer's product range to include warp and flat knitting solutions. Stoll now operates as an independent business unit within the Karl Mayer group of companies.

In the United States, the North American subsidiaries of Stoll and Karl Mayer merged into a location in Greensboro, North Carolina. The investment in the site is scheduled to be completed in March 2021 and includes a state-of-the-art textile development and visitor center, which provides demonstrations, training, collaboration opportunities with industry partners, prototyping and assembly operations for Karl Mayer and Stoll technologies. Stoll's core team in Greensboro provides business and technical management, textile design and product development, machine programming and customer service.

Tony Hooimeijer, President of KARL MAYER North America, said: "With the new development and visitor center, and the synergy generated by combining our capabilities, we provide textile manufacturers and all industries that can imagine using textiles with extremely powerful North American resources." .

The company also created the Textile Makerspace platform to help connect the textile industry with new technologies to encourage innovation. The focus is on "textile circuits", researching smart textiles and wearable devices, and the company's headquarters in Obertershausen, Germany is currently working on projects. The Greensboro location also provides a

According to the company, the area is equipped with modified standard machines and qualified service technicians. Customers in the United States can develop and implement electronic textiles with the support of Sophia Krinner, a textile technology product developer responsible for designing "textile circuits." idea. Krinner pointed out: "Customers can put forward their ideas and try various methods with us to make their ideas a reality."

In terms of technology, Karl Mayer (Karl Mayer) provided some new technologies for the knitting industry. According to the company, its RD 7/2-6 EN double needle bar Raschel warp knitting machine is 30% higher than its predecessor RD 7/2-12 EN. The machine was first introduced in 2019 and can weave 3D fabrics with a pattern distance of 2 to 6 mm. Its EN pattern drive and maximum 1 inch toggle movement allow up to 12,000 stitches to repeat pattern changes. The working width of the machine is 138 and 77 inches, and the specifications are E 18, E 22 and E24. The fabric can be used in footwear, clothing and mattress applications.

Karl Mayer's HKS 3-M ON is one of the first machines related to the company's digital solutions. The machine can directly download the pattern data from KM.ON secure cloud without using the pattern disk, so that the EL gear can be used to easily change the pattern at a speed related to the N pattern drives. According to the company, the recently released working width of the machine is 300 inches, which can be used for wider or side-by-side production and is 15% faster than its predecessor.

Karl Mayer (Karl Mayer) offers three interchangeable options for the purchase of HKS 3-M ON lapping packages-SwapKnit 36​​ and SwapKnit 36​​ Flat, which can design up to 36 stitch courses; And a variant developed repeatedly for patterns with more than 36 stitches. The pattern of the machine can be downloaded from Karl Mayer's Webshop spare parts, and then loaded onto the knitting machine for quick and flexible pattern change. According to Karl Mayer, the hybrid machine combines the patterning possibilities of a typical N and EL pattern driver.

In the early days of the SARS-CoV-2 pandemic, the headquarters was located in Shima Seiki Mfg, Japan. Ltd. has released free weaving data for masks, which can be produced using its various weaving machines (including Wholegarment® technology). The purpose is to help Shima Seiki machine owners who want to shift production to face masks to ease the shortage of surgical masks as soon as possible. These patterns are suitable for 3D fitting masks with integrated earrings, which can be knitted step by step without further sewing. These designs can be found on Shima Seiki's user website shimaseiki.com/user/samplesearch.

Headquartered in Shima Seiki Mfg, Japan. Ltd.'s yarnbank™ online network service was officially launched in September 2020, allowing users to search and view the latest yarns from many companies around the world, and then download yarn data for users to use. Fabric simulation and virtual sampling are performed on Shima SeikiSDA®-onEAPEX4 design system. The goal is to enable designers to create accurate representations of clothing that can be made using yarns that can be used for production.

Existing users of Shima Seiki APEX can register to use yarnbank for free. In October 2020, the company also launched a subscription-based design software option called APEXFiz™. This product breaks the tradition of Shima Seiki only providing all-in-one proprietary hardware and software packages, and allows customers to install the software-there are five different configurations. Design standards; design knitting; design knitting and Design Pro-on their personal computers. APEXFiz users can also access yarnbank.

Shima Seiki reports, “Traditionally, design simulation and virtual sampling have been taken as an important part of the concept of “total fashion system”, in which virtual sampling replaces physical sampling to reduce wasted time, cost and materials in the sampling phase, thereby This goal is further achieved. Overall efficiency and waste reduction, to achieve a sustainable manufacturing supply chain."

Yarn companies can register their products in the yarn library according to many different plans. According to Shima Seiki, the advantage for yarn manufacturers is the ability to "show their yarn directly to customers." By reducing the dependence on traditional sample manuals for product promotion, yarnbank technology can save yarn manufacturers time, cost and materials.

Shima also recently released the SHIMANAVI™ e-learning system, which provides online training for its APEX series users. The flexible system provides support at a convenient time and place at the user's pace. Some of these courses are available in multiple languages.

The latest technology introduction of Comez Internationl Srl, a company of the Italian Jacob Muller Group, includes DNB/600-2B, DNB EL-32 and 800 ACO/EL.

DNB/600-2B is a high-speed mechanical double needle bar warp knitting machine, specially designed for mass production of items including masks and sportswear accessories. According to Comez, the low stitch density required for such items and the high operating speed of the machine are equivalent to very high productivity. DNB/600-2B is equipped with two mechanically controlled guide rods, which can process all types of yarns into a double-sided fabric structure. The compact design and reduced working width enable fast conversion.

The company's DNB/EL-32-12B was first launched at ITMA 2019. The electronically controlled warp knitting machine is designed for sample production using any yarn of all possible specifications on a single compact machine. Items that may be produced using DNB/EL-32-12B include industrial textiles, medical textiles, shoe uppers and clothing textiles. The machine's 12 guide rods and an electronic long-stroke device with a maximum stroke of 560 mm allow the production of more advanced technical fabrics such as reinforced fabrics, continuous weft insertion fabrics and industrial upholstery fabrics.

Comez's 800 ACO/EL crochet machine has compound needles, electronically controlled yarn tension and loop density adjustment functions. Comez reports that the machine is suitable for the production of elastic and rigid fabrics and tapes. It is very suitable for products that require a seam structure, such as medical and orthopedic textiles, closed-loop Astrakhan-style fabrics, decorative ribbons and tapes. As well as sportswear ribbons and so on. The machine is equipped with eight weft yarns and has a working width of 800 mm.

Germany's Groz-Beckert KG recently launched SANT™SF special application needles and Sinker SNK SF, which are used for knitting staple fiber yarns on large-diameter circular knitting machines with increased fiber flying. feather. In such a manufacturing process, fiber residues, fiber wear and dirt will cause deposits in the passage of the needle holder channel, which will eventually lead to uneven needle seat, tight movement and overheating of the needle and sinker, resulting in poor fabric quality and damage machine. ingredient. SAN SF needles and SNK SF sinkers are designed to reduce dust accumulation and extend the required cleaning intervals to reduce machine downtime.

The staple fiber needle has a closed handle on the back of the needle and a cushion that supports the cylindrical wall. According to the company, the needle also enhances a uniform coil structure.

There is an opening on the front of the sinker to remove lint, thereby producing a self-cleaning effect. The use of sinkers can reduce fabric defects and wear on machine parts.

Groz-Beckert also launched the Academy Mobile Knitting. The company expanded the Groz-Beckert Academy by adding online seminars that can be accessed from anywhere.

Currently, there will be a new webinar on the second Tuesday of every month. The seminar is live and interactive, and attendees can use the chat function to ask questions to the host. The title of the March seminar was "Reducing the cost of knitting on large-diameter circular knitting machines." The planned April meeting is called "Needle Handling-Cleaning Flat Needles Correctly". For more information about the seminar, please visit the company's website.

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