A used Holweg Rotablok SOS paper bag making machine is currently available for sale.

Originally manufactured in 1969, the machine has been modified and upgraded by its current owner for the in-line production ( in a single process) of square-bottom paper bags with a closing flap and adhesive strip. It can also manufacture conventional straight-cut SOS square-bottom bags.

The line includes an in-line three-colour flexographic printing unit, allowing paper bags to be printed and converted within one integrated production process.

Currently visible in operation, this Holweg Rotablok represents an interesting opportunity for paper bag manufacturers looking for a specialised production solution at a reduced price.

Used Holweg Rotablok Visible in Production

One of the most important advantages of this used paper bag machine is the possibility of inspecting it while it is operating in the current owner’s factory.

The factory maily produce bags with a closing flap and adhesive strip for banks.

Holweg Rotablok Technical Specifications

The main specifications of this used Holweg SOS paper bag machine include:

  • Manufacturer: Holweg;
  • Model: Rotablok;
  • Processed material: paper;
  • Paper weight range: 80–130 gsm (the factory has mainly operated the line using paper from approximately 100 gsm upwards).
  • Bag width: 180–320 mm;
  • Bag height: 400–560 mm;
  • Bottom width: 60–140 mm;
  • In-line printing: three-colour flexographic printing unit;

The effective production range and machine performance should be confirmed through a technical inspection and tests using the buyer’s intended paper specifications.

Square-Bottom Paper Bags with Flap and Adhesive Strip

The main feature of this Holweg Rotablok is its upgraded configuration for producing SOS square-bottom bags with an integrated flap and adhesive strip.

This type of bag can be useful for packaging applications that require a convenient closing system. The flap can be folded over the bag opening, while the adhesive strip provides a practical method of securing the package.

Integrated Three-Colour Flexographic Printing

The Holweg Rotablok is equipped with an in-line three-colour flexographic printing unit.

Integrating printing directly into the bag-making process may provide several operational advantages:

  • printed and converted bags can be produced in one line;
  • intermediate reel handling can be reduced;
  • production workflows may be simplified;
  • manufacturers can add logos, product information and branding;
  • short- and medium-run printed bag production may become more efficient;
  • printing registration can be evaluated directly during bag production.

Bag Format Range

This used Holweg Rotablok can manufacture relatively large square-bottom paper bags.

The declared bag format range is:

  • bag width: from 180 to 320 mm;
  • bag height: from 400 to 560 mm;
  • bottom width: from 60 to 140 mm.

The relationship between bag width, height and bottom size should be verified for each required format, as not every minimum and maximum dimension can necessarily be combined.

Buyers should request confirmation of the available format parts, change gears, forming plates, cylinders and other size-dependent equipment included in the sale.

Used Holweg Rotablok SOS Paper Bag Machine with Flap, Adhesive Strip and 3-Colour Flexo