A: Henan Deman Packing Co.,Ltd ​as manufacturer located in Xinxiang ,Henan ,China , There's about 38years history since started production polyester thread from a family based running small business  And now grow into a large-scale production-oriented enterprises with about 800 employees . Unlike other trading company , Deman always offering products original from own factory and the guaranteed quality products . Deman have the   full set of production lines  , If you would like to visit our factory, please make an appointment with this email: contact@demanpack.com

Different industries utilize polyester sewing thread. Our polyester sewing thread is mainly suitable for further processing by dyeing factories, thread companies, and the garment industry. Deman’s bag closing thread is made from the same polyester staple fiber but serves a different sector — the packaging industry. It is ideal for sealing heavy-duty multi-wall paper bags, Raschel bags, and woven polypropylene (BOPP) bags, which are typically used to hold seeds, large animal feed, charcoal, rice, cement, fruits, and other goods. Intuitively, regular sewing thread is thinner, while bag closing thread is thicker and stronger.

This is a highly practical question, isn’t it? For consumables, businesses across industries seek suitable products that boost efficiency and cut costs — and we’re here to guide you through this. Our core product range includes the following sewing threads: Ne10/2, Ne10/3, Ne10/4, Ne12/4, Ne12/5, Ne20/6, Ne20/7, Ne20/8, Ne20/2, Ne20/3, Ne30/2, Ne40/2, etc. Under normal circumstances, the finer the thread, the lower its tensile strength. Conversely, thicker threads deliver greater breaking force. For sewing lightweight bags, opt for finer threads with longer lengths. For heavy-duty bags (e.g., those holding cement, rice, or similar goods), choose thicker threads to prevent breakage. In addition, it’s crucial to match the thread with the appropriate needle and sewing machine. For more details or personalized recommendations, feel free to contact us. We’re happy to address any questions you may have.

DEMAN’s bag closing thread is compatible with most major bag closing machine brands. Could you please let us know the brand and model of your machine? Common options include Fischbein, Newlong, Union Special, Yao-Han, JACK, WAIG and more. Below are some frequently matched machine models for reference: Fischbein: Empress 100, 101 (Tape), 200 (HS), 201 (HS Tape), Model F Union Special: BC200 (UHS), BC-e 200, 80800, 2200, 3000, 4000, 5200 Newlong: DS11 (=Doboy D95), DS-9C (HS), DS-9A, DS2(II), DS6AC, DS-7C, NP-7A, NP-3(II), NP-8, GK26-1A Siruba: AA6 Other models: GK9-2 Have you encountered thread breakage during high-speed sewing (but not at normal speeds)? Rest assured, we prioritize food-grade lubrication in our thread to effectively prevent such issues. For more details, feel free to reach out to our pre-sales team via email: contact@demanpack.com. Thank you!