Established in 1995 and headquartered in Taizhou city, China, Jack Holding Group producing 30,000 sewing machines per month, has won many honours ranking it among the top 500 enterprises in China. To reach out to the rest of the world market, the company at its very early stage of inception has moved beyond basic lockstitch, overlock and interlock machines to highly automated ones such as sewing machines for heavy weight fabrics, bar tack, hand stitch, placket setting, pocket welting and so on. The growth story for Jack doesn’t end here, the company in 2009 bought the textile-machinery business of Assyst-Bullmer with German leather cutting solution provider ‘Topcut’ and formed a new company called Topcut-Bullmer, integrating all pre-sewing and sewing solutions under one roof, the first for a company in China. Today Jack has moved beyond to offer entire project solutions for producing T-shirts, shirts, suits, blazers and trousers. In this article, Team StitchWorld reviews the basic and specialized (value add) machines offered by New Jack Sewing Machine for sewing T-shirts.
T-shirts being one of the largest manufactured apparel products in the garment industry has become an evergreen product and a must-have in the product offering of all major brands. For Asian production hubs in India, China and Bangladesh, T-shirts are a major product category in the export basket. However, the volume of business cornered in this basic item melts down to the quality of the product and cost at which the products are manufactured. With its specialized machines Jack helps to deliver the right combination of quality and cost by offering lower breakdowns, quality spare parts with easy availability, robust after-sales-service, and minimal oil consumption, and so on. The range of products for manufacturing T-shirts with Jack is indeed impressive.
JK-8991DYN: Lockstitch with Reduced Nesting
Nest at the bottom of the stitch/seams has always been a nuance for sewing operators as it is a major cause for thread-wastage and rejections. To deal with the same the JK-8991DYN direct drive dry head lockstitch machine has been developed, which reduces the development of nest. It is ideal for sewing pockets and labels with neat appearance at the maximum speed of 5000 RPM. The advanced oil-free design ensures zero oil stain in expensive garments. The machine utilizes energy-saving servo motor and has automatic thread trimmer, reverse sewing, thread wiper and sewing programmes. The ergonomic design includes an adjustable presser foot pressure, conveniently placed bobbin winder and inbuilt LED needle light with option of using two to six lights for different illumination requirements.
JK-798 Series: Overlock with Auto-Needle Positioning
The most essential machine for sewing T-shirts is an overlock sewing machine. JK-798 series of 4 thread overlocks is ideal for operations like the side seam, armhole join and shoulder join, all necessary for putting a T-shirt together. There are a total of three categories of machines under the JK-798 series of overlock machines, viz. the direct-drive, high speed and variable top-feed overlock machine. The JK-798D is the first in its class direct drive overlock machine with auto-needle positioning, auto-thread trimmer and a control box indigenously developed by JACK. An extension of the JK-798D is the JK-798 with all its features and speed of 8500 RPM, higher than the latter. Another innovation is the JK-796-4-181, high speed 4-thread overlock with direct drive. Running at a speed of 7000 RPM, the machine is equipped with a thread cooler device which protects the fabrics and thread from the heated needle. However, the most outstanding feature is the back latching device, enabling continual thread usage for sewing the next seam, because of this device the seam is more durable and resistant to unravelling.
JK-8670 & JK-8669: Coverstitch with Cylinder Bed
The second most important sewing machine is flatlock or coverstitch machine. The JK-8670 is equipped with a small cylinder bed of 177 mm circumference, for sewing arm holes and neck openings of kidswear garment. The machine has a total of 6 variants, all running at speeds of 5500 RPM. Another innovation under this category is the JK-8669DI high speed cylinder bed sewing machine, especially designed for knits and handling small parts like collar, sleeves, etc. It is also equipped with automatic thread trimmer, presser foot lifter and needle positioning mechanism. Also to mention the JK-8669DI is a patented product of New Jack Sewing Machine Corporation.
JK-5878: Lazer Guided Placket Attachment
The JK-5878-58B/C/D is an automatic placket setting machine for knitted T-shirts capable of sewing different placket patterns; it would prove of great help in manufacturing polo neck T-shirts. The lazer guided loading mechanism and large part swivel stacker ensures smooth loading and organized dispose of after sewing. The machine adopts a first in its class movable head and the centre cutting of the placket can be done simultaneously while sewing. Hence it reduces the wrinkles in the bottom of the polo neck placket. The machine can be adjusted to match with an angle knife and auto-exchange feeding function. The upper thread breakage detector stops the machine automatically during thread break and independent motor driven fabric cutting knife produces beautiful cutting line. The machine can produce an output of 2400-2800 pieces per 8 hour shift. The large conveniently placed operational panel offers multi-lingual possibility and also guides sewing operators by displaying errors/warnings.
JK-T1790K: Computerized Button Holing with Attaching
The JK-T1790K is a dry head semi-dry hook lockstitch button holing machine with bottom sewing function for placket, which has been specially developed for handling knits. The electronic tension device, an extensible platform, inbuilt LED needle light, soft actuating function and variable presser foot lift are some of the advanced features. It has 30 different inbuilt programs that can be set in cycle for button holing and continuous sewing of different patterns. The machine has another variant, the JK-T1790S for working with woven and other similar fabric types. All the models are equipped with an electronic thread clamp and an adjustable presser foot.
JK-T1906AS: Computerized Bar Tacking Machine
The JK-T1906AS is a computer controlled high speed electronic pattern sewing bar tacking machine. The machine is apt for sewing any pattern smaller than 60 mm x 40 mm area and is suitable for attaching logos; decorative tacking at side slit opening or simple bar tacking at any place. The machine adopts servo and step motors, with the ability to reach the maximum speed of 3000 RPM. Empowering it to realize the fastest starting and ending sewing, at the same time it advances the cutting speed and shortens the whole circle times. Another variant of the machine JK-T1904AS is for sewing of elastic thread shirring.
