{"product_id":"pinza-de-arrastre-autoblocante-para-geomembrana","title":"Self-locking pulling clamp","description":"\u003cp\u003ePositioning, tensioning and dragging heavy HDPE geomembrane sheets during installation —without your hand slipping off the edge of the liner or damaging the material with makeshift fixes— calls for a mechanical grip that bites the liner firmly and won't let go under load. This pulling clamp —also called a \u003cstrong\u003epuller\u003c\/strong\u003e, grip or jaw for geomembrane— is a KORWINS tool with a \u003cstrong\u003eself-locking\u003c\/strong\u003e structure and knurled pressure rollers that firmly hold sheets up to 10 mm thick, with a self-locking mechanism designed for a highly reliable grip while the material is pulled.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-locking grip:\u003c\/strong\u003e the harder you pull, the more it bites; the self-locking mechanism keeps the liner from slipping out under load.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKnurled pressure rollers:\u003c\/strong\u003e the knurling spreads the pressure and grips firmly without piercing or tearing the edge of the membrane.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible up to 10 mm thick:\u003c\/strong\u003e works for thin and heavy-gauge geomembranes, as well as geotextiles and composite sheets within range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise tensioning and alignment:\u003c\/strong\u003e lets you pull sheets to align the overlaps before welding, improving joint quality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMore safety and less fatigue:\u003c\/strong\u003e replaces the hand grip —slippery and injury-prone— with a firm, repeatable mechanical hold.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications and typical uses\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDragging and positioning HDPE\/LLDPE geomembrane sheets in ponds, reservoirs and landfills.\u003c\/li\u003e\n  \u003cli\u003eTensioning and aligning overlaps before wedge or extrusion welding.\u003c\/li\u003e\n  \u003cli\u003eHandling geotextile and geocomposites during deployment.\u003c\/li\u003e\n  \u003cli\u003eSupport on slopes to hold and reposition the liner without it sliding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eQuality and durability\u003c\/h3\u003e\n\u003cp\u003eA cheap puller fails when the knurling wears down and starts slipping, when the locking mechanism gives way under tension, or when a poorly designed jaw leaves the liner marked or perforated. This clamp is fitted with knurled pressure rollers and a calibrated self-locking system to hold firmly without damaging the material, conditions for repeated jobsite use with safety for the crew and for the integrity of the membrane.\u003c\/p\u003e\n\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\n  \u003cstrong\u003eTechnical:\u003c\/strong\u003e geomembrane puller, pulling clamp, self-locking jaw, pulling grip.\n  \u003cstrong\u003eIn the DR and the Caribbean:\u003c\/strong\u003e grip for hauling geomembrane, clamp for pulling liner, drag clamp.\n  \u003cstrong\u003eIn other countries:\u003c\/strong\u003e puller \/ liner puller (USA), pince de tirage (FR), sheet-pulling clamp (LATAM).\n\u003c\/div\u003e","brand":"KORWINS","offers":[{"title":"Hasta 10 mm (0.4 in)","offer_id":53210608599368,"sku":"681027","price":0.0,"currency_code":"DOP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/9751\/2776\/files\/imagenes-2026-05-31T174804.792_c16d11ef-e8f6-438c-b0c9-e764d293e5a0.png?v=1780242532","url":"https:\/\/dodom.com\/en\/products\/self-locking-pulling-clamp-for-geomembrane","provider":"Dodom","version":"1.0","type":"link"}