Solutions

GravoDoc 350

Doctoring and salvage rewinding

A 350 metre per minute doctoring machine that rewinds finished reels affected by defects such as slipping during final winding.

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Intro

It is a compact doctoring and salvage winding machine designed to rewind finished product that has picked up defects such as slipping during final winding, through a simple, controlled system. Auto tension control and web guiding recover good material from the first metre onward.

Super compact and plug and play, the GravoDoc minimises production wastage and can ink-jet code batch numbers on finished reels, as a reliable, repeatable and job specific solution today.
Advantages

Key features and benefits

01
Compact
Easy to install anywhere

A super compact machine that is plug and play, easy to install on an existing floor with no extra effort.

02
Salvage rewinding
Recover good material

It rewinds finished reels affected by defects like slipping, recovering good material that would otherwise be scrapped.

03
Easy to run
Floating unwind and rewind

A floating type unwinder and rewinder with a cantilever design makes loading and unloading reels quick and easy between jobs.

04
Customisable
Batch coding and more

Easily customised per job, for example with an inkjet printer to code serial or batch numbers on finished reels.

One machine, salvage rewinding in line

GravoDoc integrates a floating unwind, auto tension and web guiding and a floating rewind into a single compact machine, working as a complete system to recover good material cleanly.

GravoPrint 300

Technical documentation

GravoDoc 350 ships with full technical documentation, from mechanical drawings to electrical schematics and operating manuals, supporting its installation, operation and long service life as a production machine on your flexible packaging line, wherever it runs.

Available documents

Technical specifications

Line speed
350 m/min
Working width
350 mm
Reel diameter
Unwind and rewind 400 mm
Core
76 mm (3 inch)
Function
Doctoring / salvage winding

Complete GravoDoc 350 build process

01
Specification and technical definition

The project begins with a detailed specification of the machine from Narendra Gravure’s technical office, in coordination with your production team. At this stage the configuration is matched to your substrates and structures, and the mechanical and electrical drawings for in house manufacturing are generated.

02
Manufacturing

The machine is produced through an in house process focused on precision and quality control. Our VMC, CNC and grinding machines ensure repeatability, reliability and a consistent result, reducing deviations compared with bought in assemblies.

03
Installation

Installation is simple and efficient: the machine is commissioned on your floor through an agile and uncertainty free start up, thanks to prior testing and the preparation of drawings and documentation, contributing to a cleaner and safer route into full production.

GravoDoc 350 for your line

It can be integrated into lines developed by third parties. Based on your existing layout, or with support from our technical office, we adapt the machine to slot into your line, ready to install and run.

We analyse the technical fit and define the best way to integrate it, maintaining control over timelines, cost and finished quality.

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FAQs
What is GravoDoc for?

Doctoring or salvage winding, rewinding finished reels that have picked up defects such as slipping during final winding, to recover good material.

What technologies are built into GravoDoc?

A floating unwind and rewind with a cantilever design, auto tension control and web guiding, with SIEMENS electronics and 45 mm plate frames from our own CNC and VMC machines.

Can it do more than rewind?

Yes. It is easily customised, for example with an inkjet printer to code serial or batch numbers on finished reels.

Is GravoDoc supported after installation?

Yes. It is supported directly by Narendra Gravure after installation, with remote diagnostics, spare parts and the same in house team that designed and built the machine.

Tell us what you are trying to make. We will help you think through the line, the utilities and the floor — turnkey if you need it — and the machines come when you are ready, on your timeline, not ours.

Let us think through your plant together

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