Newlong NP-8 Double Thread Portable Bag Closer

The Newlong NP-8 is our high-speed, double-thread, portable bag closer.

Stitch Length: 8.5 mm (fixed) / 3.5 stitches per inch
Speed: 1,500 ± 100 r.p.m (~160-230 bags/hour)
Needle: DNx1 #25
Thread: 20/6
Stitch type: Double-Thread Chainstitch
Bag Material: Hessian, Jute, Kraft Paper, Cotton, PP/PE woven cloth and more
Cutter: Automatic Thread Cutter
Oiling System: Oil pump lubrication. Uses Tellus #32 oil. You can also use mineral oil #22-32 cSt at 40°C, readily available at your local store.

The Newlong NP-8 portable bag closer is a high-speed, double-thread industrial sewing machine engineered for secure closure of heavy jute and hessian bags. Designed for demanding agricultural and industrial packaging environments, the NP-8 delivers strong double-thread chain stitching at speeds up to 1,600 rpm, ensuring tight, reliable seams on filled bags. Its shock-resistant isolation handle improves operator comfort and control, while the automatic oil-pump lubrication system protects internal components for long service life and minimal maintenance.

With an 8.5 mm fixed stitch length, DNx1 #25 needle system, and automatic thread cutter, the NP-8 provides consistent, professional bag sealing performance across bulk commodities such as grain, fibers, minerals, and other heavy materials. Trusted worldwide and supported by American-Newlong’s parts, service, and technical expertise, the NP-8 is the preferred portable solution for double-thread bag closing where strength and durability are critical.

SEAM HEAVY BAGS WITH CONFIDENCE — EVERY TIME

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FAQ

Find answers to the most commonly asked questions about the Newlong NP-8.

What is the NP-8 used for?

What types of bags can the NP-8 sew?

What type of stitch does the NP-8 use?

The NP-8 produces a double-thread chain stitch (Type 401) using one needle and one looper. This stitch type provides stronger seam security than single-thread bag closers, especially for heavy or high-value contents.

Common applications include:

Agriculture (grain, seed, feed)
Minerals and chemicals
Fibers and natural materials
Bulk industrial commodities

These industries often require strong double-thread bag closure for heavy products.

What maintenance does the NP-8 require?

What is the difference between the NP-8 and NP-7A?

Newlong NP-8 Double Thread Portable Bag Closer

SEAM HEAVY BAGS WITH CONFIDENCE — EVERY TIME

FAQ

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