**High Speed Single Needle Lockstitch Sewing Machine**
Here is the detailed specification of the **DK4420** model, a high-performance single needle lockstitch sewing machine designed for fast and efficient industrial use.
- **Model No.:** DK4420
- **Needle Number:** Single/Double
- **Stitch Type:** Lockstitch
- **Sales Model:** Wholesale
- **Number of Needles:** DPX17#22-30#
- **G.W./N.W. (Kgs):** 27.5 / 34
- **Trademark:** DUKI
- **Transport Package:** Neutral Color Box
- **Specification:** 586 x 260 x 525 mm
- **Origin:** China
- **HS Code:** 84522
Below is a detailed table showing the key specifications of the DK4420:
This machine is ideal for heavy-duty applications in garment manufacturing, offering precision, speed, and durability. The double needle option allows for more versatile stitching, while the neutral packaging ensures safe delivery to global markets.
The **DK4420** is manufactured in China by DUKI, a trusted brand in the textile industry. With its compact design and efficient performance, this sewing machine is a great choice for businesses looking to enhance productivity without compromising on quality.
| Model | Number of Needles | Stitch Length (mm) | Foot Length (mm) | Horizontal Hook | Speed | Package Size (mm) | G.W./N.W. (kgs) |
| DK4420 | DPX17#22-30# | 1~4 | 8~16 | B | 3000 RPM | 586 X 260 X 525 mm | 27.5 / 34 |
BOPP Thermal Lamination Film is a type of heat laminating film made from biaxially oriented polypropylene (BOPP) as the base material and processed through special coating or composite techniques. It is mainly used for surface lamination of printed materials (such as book covers, packaging boxes, posters, etc.) to enhance their wear resistance, water resistance, glossiness and aesthetic appeal.
Â
1. Key Feature
-High transparency: Maintaining the clarity and vividness of colors of printed materials.
-Excellent rigidity & flatness: BOPP substrate offers good stiffness and anti-curling property.
-Hot melt adhesive layer: Usually EVA (ethylene-vinyl acetate) or PUR (polyurethane) hot melt adhesives are adopted to ensure a firm bond.
-Temperature resistance: Adapt to the heating roller temperature of the laminating machine (typically 80~120℃).
-Waterproof and moisture-proof: Protect printed materials from the influence of moisture and stains.
-Glossy film: High gloss, enhancing visual effect.
-Matte film: Anti-glare, improving texture.
-Scratch-resistant/UV-resistant: Special coating to extend durability.
Â
2. Application Fields
-Printing and Packaging: Book covers, picture albums, color boxes, labels.
-Commercial Promotion: Posters, menus, business cards, tags.
-Industrial Uses: Electronic product instructions, waterproof maps.
Â
3. Production Process
-BOPP base film production: Two-dimensional stretched polypropylene film (to enhance strength and transparency).
-Coating/Composite: Apply hot melt adhesive (such as EVA) onto the BOPP substrate.
-Cutting & Conveying: Cut into different widths according to customer requirements (commonly 450mm/600mm etc.).
High transparency Temperature resistance Waterproof and moisture proof Tear resistance Dimensional stability Gloss selection
JIANGYIN HONGJU NEW MATERIALS CO.,LTD , https://www.hongjuspecialfilm.com