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Packaging & Disposables

Plastic Bag Production Line

Film blowing, printing and bag sealing equipment for plastic bag manufacturing. Rolangear specifies and supplies the extrusion, printing and bag-making equipment your bag type requires, and supports installation, commissioning and operator training.

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Plastic Bag Production Line

Qué puede producir

  • Shopping bags
  • Packaging film
  • Printed film rolls
  • Bin liners
  • Industrial bags

Plastic bag production begins with film blowing: plastic granules are melted, extruded through a circular die and inflated into a continuous tube of film. The film is then printed if required, and finally cut and sealed into finished bags. The equipment needed depends on your bag type, the film structure and whether printing is required.

Rolangear supplies film blowing machines across single-screw, double-layer and three-layer co-extrusion configurations, including rotary die head machines, HD/LDPE machines, PP film blowing machines and high-speed mini film blowing machines. The catalogue also includes film blowing and gravure printing units, PE extruder and printing machines, and plastic bag sealing and cutting machines.

This suits packaging manufacturers producing bags for their local market, and businesses that currently buy bags in and want to produce them. Because film blowing, printing and bag making are separate stages, the line can be built up progressively.

Rolangear plans the configuration around your bag specification and target output, specifies the equipment, supplies it, and supports installation, commissioning and operator training. Scope is confirmed per project in a written technical proposal.

Proceso de producción

  1. Raw Material Preparation

    Plastic granules and any additives or masterbatch are prepared to the required formula.

  2. Material Mixing and Feeding

    Material is mixed and fed into the extruder hopper.

  3. Film Blowing

    Melted material is extruded through a circular die and inflated into a film tube, then cooled and wound.

  4. Printing

    Where printed bags are required, film passes through a gravure or flexographic printing unit.

  5. Bag Making, Sealing and Cutting

    Film is sealed and cut into the finished bag format.

  6. Inspection and Packing

    Finished bags are inspected, counted and packed.

Equipos de esta línea

5 items

A plastic bag line is normally built from the following equipment groups:

  • Film blowing — single-screw, double-layer or three-layer co-extrusion machines producing the film tube.
  • Printing — gravure or flexographic printing units where printed bags are required.
  • Bag making — sealing and cutting machines producing the finished bag format.
  • Sealing — continuous and pedal sealing machines for finishing and secondary packaging.

Requisitos de fábrica

Film blowing requires vertical clearance above the extruder for the film bubble and haul-off tower. Floor space is required for the extrusion line, printing and bag making in sequence, plus granule and finished goods storage. Three-phase electrical supply and cooling are required; specific requirements depend on the equipment selected and are confirmed in the technical proposal.

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Estudio de fábrica

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Preguntas frecuentes

Ingeniería y posventa

Installation & Commissioning

Engineer-supported installation and commissioning of the supplied equipment at your factory.

Formación de operarios

Training for your operators and maintenance staff on the equipment supplied.

Repuestos

Spare parts supply for the machinery in your production line.

Soporte posventa

Technical support after handover, including remote assistance.

The scope of engineering, installation and after-sales support is confirmed per project in the technical proposal. Más sobre los servicios de Rolangear.

¿Planificando este proyecto de producción?

Tell us what you want to manufacture, your required capacity and your destination country. Our engineering team will recommend a suitable manufacturing solution.

Request a Technical Proposal

Contáctanos

Nuestro objetivo es brindarle un excelente servicio al cliente y satisfacer todas sus necesidades de automatización. Le brindamos la tranquilidad de trabajar con un solo proveedor de maquinaria, un solo departamento de servicio y un solo punto de contacto.