Product features
the perfect collar
The 3704 is an indispensable tool for the homogeneous shaping of the collar in high-quality jacket manufacturing. Specifically, it concerns sewing the undercollar felt onto the upper collar. The fullness is inserted into the fabric layer underneath. The upper collar felt is used for the precise guidance of the collar contour and for the accurate detailing of the collar corners. The 3704 is offered in two versions (-2/02 and -2/03).
Your benefits at a glance
Consistent sewing of undercollar and top collar

Application of fullness with the differential bottom feed and compensating presser with guide improves handling

Imitated hand-sewn effect (-2/02)

Zigzag seam and a seamless bottom collar edge (-2/03)

Soft collar processing, a big advantage when sewing thin materials
High quality - no displacement of the under collar felt
Performance: Effective output of approx. 500 - 600 jacket collars in 8 hours
Examples of use

Perfect collars on classic jackets
Specifications
| Model | 3704-2/02 | 3704-2/03 |
|---|---|---|
| Automatic presser foot lift | ● | ● |
| Automatic thread trimmer | ● | ● |
| Backtacking (automatically or via hand switch) | – | ● |
| Clearance when lifting [mm] max. | 7 mm | 7 mm |
| Differential bottom feed | ● | ● |
| Differential quick adjustment | ● | ● |
| Horizontal hook, small (S, Ø 22mm) | ● | ● |
| Needle system [Nm max.] * depending on the sewing equipment | 438 | 438 |
| Nominal voltage [V], [Hz] | 230V, 50 / 60 Hz | 230V, 50 / 60 Hz |
| Stitch condensation (automatically or via hand switch) | ● | – |
| Stitch length (front feed dog) | max. 4,5 mm | max. 4,5 mm |
| Stitch length (rear feed dog)) | max. 2,5 mm | max. 2,5 mm |
| Stitch length (with stitch condensation) | max. 0,3 mm | – |
| Stitch width | max. 6 mm | max. 6 mm |
| Stitches/min. max. *= depending on foot stroke **= depending on foot stroke and stitch length *** = in case of twin needle / three needle version less speed possible – dependent on needle distance ****= selectable per step *****= depending on the use of the stitch loosening device ******= max. 2,500 stitches in combination with conversion kit “Heavy” *******= The sewing speed depends on the type of cam used | max. 5.000 | max. 5.000 |
● Standard ○ Optional
Catalogue
Dürkopp Adler does not publish a separate leaflet for the 3704. Their catalogues cover the whole range and open in a new tab.
The file is published and updated by the manufacturer; it is not copied here, so nobody downloads an outdated version.
Data sheets, photos, videos and specifications: Dürkopp Adler.
Other models · Collar and front edge workstations
Tell us the operation you need to solve and we will reply with the right configuration and the lead time.
