{"product_id":"maquina-de-coser-portatil","title":"Portable sewing machine","description":"\u003cp\u003eClosing woven polypropylene, kraft paper, mesh, jute, and industrial packaging bags in the loading area, weighbridge, or warehouse without moving heavy loads to a fixed sewing station requires a lightweight portable machine with chain stitch and reliable feed for slippery bags. This portable sewing machine—also called a \u003cstrong\u003ebag closer\u003c\/strong\u003e, bag closer, or industrial stitcher—is manufactured by KORWINS with a 210 W pure copper motor and aluminum alloy housing, designed for intensive professional use in the agri-food industry, hardware stores, agrochemical companies, supply warehouses, and construction firms that dispatch bulk product.\u003c\/p\u003e\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e210 W pure copper motor:\u003c\/strong\u003e wound with real copper (not aluminum) to maintain constant torque and withstand continuous shifts without losing power, a key condition for dispatch operations of several hundred bags per day.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic thread cut at the end:\u003c\/strong\u003e when the machine is separated from the bag, the thread is cut automatically at the outlet, eliminating the step of cutting with scissors and significantly accelerating the cycle per bag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-thread chain stitch:\u003c\/strong\u003e firm closure for transport that opens easily at destination by pulling the thread end, a classic condition of industrial packaging where the recipient unstitches the bag to empty the contents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum alloy housing:\u003c\/strong\u003e lightweight construction (3 kg) resistant to dust and impact from the industrial environment—rice mills, cement warehouses, agrochemical plants with continuous dust—with a careful balance for one-hand operation without tiring the operator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeed system calibrated for slippery materials:\u003c\/strong\u003e the geometry of the presser foot and feed dogs is dimensioned to maintain traction on woven polypropylene bags (which tend to slip in generic machines), guaranteeing a straight stitch line without skips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated oil lubrication:\u003c\/strong\u003e the lubrication system reaches the internal friction points, extending the service life of cams, connecting rod, and needle in intensive use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical applications and uses\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAgri-food industry: closing bags of rice, beans, sugar, flour, corn, coffee, cocoa, and grains in general.\u003c\/li\u003e\n\u003cli\u003eAgrochemical companies and hardware stores: fertilizer, manure, certified seed, urea, sulfate, and other chemical products in bulk bags.\u003c\/li\u003e\n\u003cli\u003eConstruction: cement, mortar, rubble, and granular materials in bags.\u003c\/li\u003e\n\u003cli\u003eWarehouses and distributors: bulk packaging of heterogeneous products for dispatch and wholesale.\u003c\/li\u003e\n\u003cli\u003eCourier and logistics: closing of mailbags, courier sacks, and non-woven packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuality and durability\u003c\/h3\u003e\n\u003cp\u003eAn economical portable bag closer fails at two points: the low-amperage motor cannot withstand continuous shifts (it heats up and loses power after a few hours) and the feed system gives way on slippery bags (producing skips in the stitch line and unsafe closures). This machine works with a 210 W pure copper motor sized for continuous use and a feed system calibrated specifically for woven polypropylene. It is the difference between a professional intensive-operation closer and a generic machine that fails in an agri-industrial warehouse on the second shift.\u003c\/p\u003e\n\u003cdiv style=\"background-color: #f3f6f3; padding: clamp(14px, 4vw, 18px); margin-top: 20px; font-size: 0.9em; color: #555555; border-radius: 8px;\"\u003e\n\u003cstrong style=\"color: #006902;\"\u003eAlso known as:\u003c\/strong\u003e \u003cstrong\u003eTechnical:\u003c\/strong\u003e portable bag closer, cerradora de sacos portátil, máquina cerradora de sacos, cosereta industrial, máquina selladora de sacos. \u003cstrong\u003eIn DR and Caribbean:\u003c\/strong\u003e cosedora de sacos, cosedora portátil, máquina de coser sacos, cerradora de quintales, cosedora de costales. \u003cstrong\u003eIn other countries:\u003c\/strong\u003e bag closer (USA), bag stitcher (USA), portable bag sewing machine (USA), cerradora de costales (MX), cosedora de sacos (CO), cerradora industrial (ES).\u003c\/div\u003e","brand":"KORWINS","offers":[{"title":"Corded (220 V)","offer_id":52455273791816,"sku":"349832","price":54000.0,"currency_code":"DOP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/9751\/2776\/files\/imagenes-2026-05-31T174300.447.png?v=1780242214","url":"https:\/\/dodom.com\/en\/products\/portable-sewing-machine","provider":"Dodom","version":"1.0","type":"link"}