Seal Cut - High Quality and Versatility

High Quality Side Seals

The new high-speed Seal-Cut sealing system for plastic film offers an original, innovative solution for machine direction sealing. The Seal-Cut is capable of producing high quality, sealed edges in a wide variety of film applications. The stand-alone design allows it to be free standing or easily attached to winders, bag-making machines and rewinders.

Versatility

The Seal-Cut is capable of converting large jumbo or master rolls into smaller poly bags. This saves production and equipment costs because you can run several small size poly bags on one larger line rather than needing several smaller lines to run the same amount of bags.

Safe

The seal-cut uses a non-sharp sealing element and has no driven parts. All high temperature and pinch points are clearly labeled.

Click here to view and download the sales brochure (715K).

SEAL CUT

Seal Comparison
Performance and Benefits

Seal-Cut Seal Profile

Hot Knife Seal Profile

  • Capable of running faster speeds than a Hot-Knife system (up to 1,000 feet/min)
  • Film Thickness' up to .006 inches (150 microns)
  • Low or No Static Build up of the Film
  • Simple Design Concept
  • Consistent and Reliable
  • Convert Master Rolls into Several Smaller Sized Rolls
  • Reduce Production & Equipment Costs
Background

The Seal-Cut reverses the process commonly known as slit-seal. Instead of slitting the material and then sealing it, the material is first preheated, then sealed and then split. This results in a clean seal, even on material up to 6.0mil. For most materials, we use a significantly lower sealing temperature than the hot knife systems. For instance, a hot knife is usually set between 700 and 900F. The Seal-Cut is set at about half that temperature. The benefits of using a lower temperature is the polymer is not crystallized. The result is a high quality seal that has excellent strength along the seal edge in both the transverse and machine directions.

Film Path Though the Unit

The diagram below shows how the film goes through the unit. The film passes under the sealing drum which contains the stationary seal element holder. The seal element itself has three separate zones: preheat, seal and cut. This three zone approach yields a sealing process that is more gradual and less of a shock to the film.

How to See Results with Your Film

If you are interested in seeing how the process will work for your material, we have a small lab in which we can run test runs. Here are the specifications for the rolls we need: Please send two rolls of each material you want to trial. Maximum roll width is 19 inches. Core size is 3 inches. Maximum roll diameter is 12 inches. To setup a trial run, please call the office number listed on our Contact Us page.

We generally use one roll to develop the process conditions and the second roll to run the samples which we send back to you. It is important that we also receive the following for each material: Typical line speed you want to run the material, and basic makeup of the material (% Low Density, % Linear Low, % Metallocene, % High Density).

 

 





Send questions or comments about this website to
support@drjosephinc.com
 Copyright © 2001-2011

D. R. Joseph, Inc.

All Rights Reserved.
Legal Information