Joining of Textiles besides Sewing · Joining of Textiles besides Sewing Ultra-sonic Welding with...

Joining of Textiles besides Sewing

May 2014 Techtextil Texprocess Atlanta

Karl Herzer / Product Manager PFAFF Welding Machines

2


Sewing...

a logical connection of

a woven or a knitted fabric

always continuous..

Joining Methods

or continuouseither press type and

tool depending

No Sew...

3


Hot Wedge Hot Air Ultrasonic Hot Air Taping

Welding-parameters:• Roller pressure• Speed

• Temperature

Welding-parameters:• Roller pressure

• Speed• Temperature

• Hot air flow


• Speed• Amplitude• (Style of wheel)


• Speed• Temperature• Hot air flow


• Speed• Laser energy

Laser

Welding Methods.. Continuous

4


History of Welding Machines

160 Years of Industrial Sewing – 70 Years of Welding

Basic patent of the First Welding Machine

Hot Wedge - 1942

5


Hot Wedge

Welding Methods

Hot wedge is mainly being used for welding PVC. Typical applications are production of smaller tents, tarps, pool liners, banners, inflatable structures, motorcycle seats etc.

Hot wedge creates a durable thermoplastic joint, together with low fume emission when welding PVC (compared to welding PVC by hot air).

Weldable fabrics: Thermoplastic foils and textiles, thickness from 0.2 – 2mm

Advantage compared to Hot Air: Concentrated heat, hardly any fumes, smooth seams

6


Milestones of Welding Machines

Hot Wedge Welding 1942 - Today

8300 8320

7


Applications of Welding Machines

Hot Wedge Welding / Stationary

8320

8



Hot Wedge Welding Mobile 1965 – Today

8309 8390

8360 8362

9



Hot Wedge Welding Mobile

10


HotAir

Welding Methods

Direct welding by hot air depends a lot on the fabric. Typical application is welding of needle felt for filters (no perforation of the seam, no additional sealing of a sewn seam needed).

Weldable fabrics: Thermoplastic foils and textiles, thickness from 0.2 – 2mm

Advantage compared to Hot Wedge: Non wearing system, low maintenance, high speed

11



Hot Air Welding 1942 - Today

8300 8320

12



Hot Air Welding

8320

13


Ultra-sonic

Welding with the ultrasonic method is probably the most diverse of the applications. It can be used for: disposable protective clothing, covers and cloths from the medical sector, filters, roller blinds, lingerie and outdoor garments. Specially knitted fabrics are very comfortable because there is no thread that limits the elastic stretch of the fabric.

Ultrasonic frequency should base on inaudible ´30-35 kHz - contrary to 20 kHz systems.

Not all fabrics can be welded by ultrasonic. Specially the fabric thickness is limited to a certain thickness: beyond a certain strength the outside is burned before the inside is liquefied.

Essential for precise seams: Rotative horn and inversely rotating anvil wheel

Weldable fabrics: Thermoplastic foils and textiles, thickness from 0.05 – 0.5mmGrammage up to 300g / sqm

Welding Methods

14



Ultrasonic Welding 1990 – Today

8304-082 8312

15



Ultrasonic Welding

16


Hot AirTaping

Welding Methods

Regarding hot air it is important to distinguish between direct welding with hot air and seam sealing of a tape. The latter is the most common sealing method, used for creating a waterproof seam for membranes inside garments (used for outdoor applications). It is actually a hot melt gluing process by using a hot melt layer on the seam sealing tape. Other typical applications are waterproof shoes, work wear and chemical suits and sewn and foamed automotive interior equipment.

Sewing and taping is a normally a division of functions: The sewn seam will achieve the strength, the taping will create a liquid proof seam.

Taping doesn’t need thermoplastic fabrics. A hot melt glues can also stick on other fabrics.The type of glue has to match to basic fabric.

17



Hot Air Taping 1960 - Today

8306 + 8303 + 83308305

18



Hot Air Taping

19


Laser

Welding with Laser technology is used for many years in various metal applications. Now the laser welding technology can be used for heating the tape on tape machines as well as for direct welding of technical textiles. With a laser of class 4. a special protection glasses need to be worn during the operating process.

There are 2 principal methods of introducing a laser beam to a textile seam: The hollow seam and the translucent seam.

The disadvantage of the current laser systems for joining textiles is the cost and the employment protection.

Welding Methods

20



Laser Welding 2005 – ?

8310 - Laser

21


Welding is always Testing..

Due to the Variations of Textiles

„The truth is always revealed on the soccer field“(Quotation of Otto Rehhagel, a famous German soccer coach)

Welding always means trial and error on the machine,

and success !

Please take advantage of the Experts on the Show...

22


Many Thanks!

Karl Herzer

Product Manager Welding Machines

[email protected]

www.pfaff-industrial.com

office +49 6301 3205 2329

mobile +49 1522 250 4256

PFAFF Industriesysteme und Maschinen AG

Hans Geiger Strasse 12

67661 Kaiserslautern

Germany

meet us at booth 4229 on Techtextil

Joining of Textiles besides Sewing · Joining of Textiles besides Sewing Ultra-sonic Welding with...

Documents

Transcript of Joining of Textiles besides Sewing · Joining of Textiles besides Sewing Ultra-sonic Welding with...