Products Descriptions
Tired of bag leakage, dust contamination or damaged sacks from traditional feed dog machines? The DS-7C continuous roller feed bag closing head (equal to Newlong DS-7C) is a 1-needle, 2-thread chainstitch machine with the built-in thread cutter – delivering sift-proof, dust-proof closures for powders, granules, and delicate materials. Ideal for global food, chemical, and pharmaceutical businesses seeking reliable automatic bagging line solutions.
Core Features & Advantages
1. Sift-Proof Technology
- Unique automatic swing needle motion: Eliminates elongated needle holes to prevent powder/granular leakage – critical for dust-proof sealing.
- Roller feed system (no feed dog): Guides bags smoothly, avoiding damage to delicate/lightweight sacks (a flaw of traditional feed dog designs).
- Fixed 7.7mm stitch length: Ensures consistent, tight seams meeting industry hygiene and containment standards.
2. Built-In Cutter + High-Speed Performance
- Integrated guillotine-type continuous thread chain cutter: Automates clean thread trimming, reducing labor and ensuring neat finishes.
- Max 1600 SPM sewing speed: Balances high-volume efficiency with precision for medium-to-high throughput.
- Sight feed oiler: Transparent reservoir enables visible lubrication, extending machine life and simplifying maintenance.
3. Seamless Line Compatibility
- Works with over-tape closure and heat-sealing lines: Perfectly pairs with KS series heat sealers to apply crepe tape over sealed areas.
- Versatile integration: Compatible with most automatic bagging systems for end-to-end automation.
- #401 chain stitch: Delivers flexible, durable seams for stacking and transport.
Ideal Applications & Users
- Suitable Materials
Bags: Paper, PP, PE, delicate/lightweight sacks
Products: Powders (flour,chemicals), granules (seeds, pharmaceuticals), dust-prone materials
- Main Industries
Food packaging, chemicals, pharmaceuticals, and general manufacturing (dust-prone bulk materials)
Why Choose the DS-7C Heat Sealer Compatible Bag Closing Head?
- Leakage Prevention: roller feed eliminates waste and compliance risks.
- Seamless Integration: Works with heat sealers and automatic bagging systems.
- Cost-Effective: Low maintenance, labor savings and durable design minimize downtime.
Don't let traditional sewing machines compromise your product quality or compliance. The DS-7C KS series heat sealer compatible bag closing head delivers the sift-proof, dust-proof, and damage-free sealing you need to compete in international markets. Contact our team today to request a personalized quote, schedule a virtual demo, or discuss how the DS-7C can optimize your packaging workflow. Let's build a more secure, efficient, and compliant production line – together!
Applications
PP bags
Stitch Sample
Paper bags
Products Specifications
|
Model |
DS-7C |
| Number Of Needle | One needle |
|
Max. Sewing Speed |
1600SPM |
|
Stitch Length |
7.7mm(fixed) |
|
Feeding System |
Continuous top roller feed |
|
Cutter Type |
Automatic thread cutter |
|
Needle Size |
DN-H29 #26 |
|
Stitch Type |
401 |
| Lubrication | Automatic |
Products FAQ
1. What stitch types do PACKSTAR bag closing machines adopt for bag sealing?
A: Our bag closing machines mainly use durable chain stitch, including single-thread, double-thread and four-thread styles. The chain stitch features high tensile strength, not easy to unravel even under heavy load, perfectly suited for long-term stacking and transportation of filled industrial bags.
2. What kinds of packaging bags can PACKSTAR full-series bag closing machines sew?
A: All models adapt to PP woven bags, plastic sacks, paper bags, jute bags and composite lined bags. High-speed and double/four-thread models can handle thickened multi-layer bags, while standard single needle models meet the sealing demands of conventional light and medium packaging bags.
3. How to improve the overall efficiency of the bag closing production line?
A: Match high-speed bag closing machines with synchronous-speed bag infeed devices. Regularly maintain the equipment to reduce downtime. Set reasonable stitch length and running speed according to bag materials to avoid repeated rework caused by unqualified sealing.
4. How about the packaging and transportation of that machine?
A: All the machines are packed in standard export cartons or wooden packaging boxes to prevent damage during transportation.
5. What payment terms do you accept?
A: We accept T/T,Paypal,Western union ect.
why choose us
our Company
PACKSTAR is a leading professional manufacturer of bag sewing machines, bag closing machines and supporting packaging equipment. Our products are trusted by clients in over 30 countries, serving food, chemical, feed, grain, fertilizer and packaging industries.
Meanwhile, we offer one-stop services including pre-sales technical consultation, free solution design, on-site installation guidance, long-term after-sales maintenance & spare parts supply.
Welcome to email or call us get the professional sewing solution and quotation.
Our address
No.25,Hi-Tech Zone,Xi'an,710065,China
Phone Number
86-29-81870126,81870128
dekoco@vip.163.com,sales@chinapackstar.com
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