Few garments or textile end products, however well designed can be made without seams, and sewn seams by their very nature make holes in the fabric whilst introducing other materials, such as sewing thread. Alternatives to this can be bonding, welding and hot air sealing. A precondition of welding fabric parts together is the presence of a thermoplastic material, either within the fabric itself, as with synthetic materials, or by the use of a bonding tape between the two fabric layers, feed into the seam as it is sealed together, as required by natural fibres.
This method of construction has many advantages for certain types of garments. As normally the seam is made from the two fabrics without any additions, the mechanical and physical properties of the seam are similar to the processed surface. It is as water and chemical proof as the main fabric, as stretchy, as bacterially and pathogen resistant and therefore is of great interest for military, medical, outdoor, sports and under garments and technical uses.
With an increase in synthetic base fabrics the application spectrum of welding machines is becoming more diverse and includes hot air and hot wedge sealing as well as ultrasonics where the energy is controlled by a lower vibrating wheel, the upper wheel which can contain an engraved shape or patterning to suit the seam requirements, applies the pressure. The ultrasonic process channels high frequency vibrations which cause a rapid heat build-up at the material contact point. The process is very versatile as a machine can be programmed to seam, cut, slit, trim, tack, emboss, or cut and seal simultaneously.
All this technology will be exhibited at a brand new biennial exhibition, Texprocess, which is being established by Messe Frankfurt as the new leading international trade fair for processing textile and flexible materials. This event for the garment and textile processing industry will be held in Frankfurt am Main from May 24 to 27, 2011, parallel to the already well established Techtextil, the international trade fair for technical textiles and nonwovens.
Texprocess will promote all the latest international technological innovations in the sector with products covering the entire supply chain from design, pattern production, cutting, making up and finishing to logistics, information technologies and technical accessories.
Messe Frankfurt Exhibition GmbH
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