Para convertidores de bolsas
Sack kraft y papel MG para convertidores de bolsas.
Suministramos bobinas de sack kraft, kraft MG y kraft extensible directo de fábricas europeas a convertidores industriales que fabrican bolsas de shopping, SOS, sobres de e-commerce y sacos de boca abierta o válvula. No vendemos al consumidor final — vendemos la materia prima que tu línea convierte en producto terminado.
Especificaciones estándar
- Gramaje
- 70 – 140 g/m²
- Fibra
- 100% recycled kraft
- Ancho de bobina
- 600 – 2,200 mm
- Diámetro
- ≤ 1,500 mm
- Mandril
- 76 / 152 mm
- Certificaciones
- ISEGA · PEFC · FSC
- MOQ típico
- 20 t / order
- Origen
- EU mills
Por qué los convertidores trabajan con WeePaper
Bobinas mill-direct
Suministro directo de las principales papeleras europeas. Sin intermediarios añadiendo capas de coste.
Maquinabilidad probada
Calidades calibradas para líneas de bolsas de fondo cuadrado, SOS, mailers y sacos. Lotes consistentes.
100% reciclado, ISEGA
Toda la gama parte de fibra reciclada. La calidad Ecokraft alcanza rendimiento equivalente a fibra virgen.
Logística B2B
Lead times de 4–6 semanas a planta. Documentación CoC en cada envío.
Calidades disponibles
Kraft Bag Paper
Bobinas directas de fábrica para convertidores de bolsas de compra y mensajería.
Ver producto →08Ecokraft Bag Paper
Bobinas para convertidores de bolsas de supermercado y mailers de e-commerce.
Ver producto →09Ecokraft Sack Paper
Bobinas de alta resistencia para convertidores de sacos industriales y agrícolas.
Ver producto →Sack kraft, MG, MF y extensible: qué calidad para qué bolsa
| Grade | Finish | Typical grammage | Best for | Key property |
|---|---|---|---|---|
| Sack kraft (standard) | Matte, unglazed | 70–100 g/m² | Open-mouth & valve sacks | High TEA, controlled porosity |
| Extensible sack kraft | Matte, creped | 70–100 g/m² | Cement, grain, chemicals | 4–7% stretch, shock absorption |
| MG kraft | One-side glazed | 60–100 g/m² | Printed shopping & SOS bags | Gloss face, high print fidelity |
| MF kraft | Matte both sides | 80–140 g/m² | E-commerce mailers, liners | Bulk and stiffness |
| MB kraft | Semi-smooth | 70–120 g/m² | Square-bottom bag lines | Runnability over print gloss |
Preguntas de convertidores
What is sack kraft paper?
A high-strength packaging paper, typically 70–140 g/m², engineered for converting into industrial sacks and bags: high tensile energy absorption (TEA), controlled porosity for fast air release during filling, and — in extensible grades — 4–7% stretch that absorbs shock during drop and handling.
What is the difference between MG, MF and MB kraft paper?
MG (machine glazed) has one high-gloss side from a Yankee cylinder, giving the best print face. MF (machine finished) is matte on both sides with higher bulk and stiffness. MB (machine bright) sits between them, used where runnability matters more than print gloss.
What grammage is used for shopping bags?
Square-bottom and SOS shopping bags typically run 70–100 g/m²; e-commerce mailers 80–120 g/m²; open-mouth and valve sacks use 70–100 g/m² extensible kraft in two or three plies rather than one heavy sheet.
What is the minimum order quantity?
20 tonnes per grade and grammage, 4–6 week lead times from European mills, delivered plant-to-plant with chain-of-custody documentation on every shipment.