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Wide bag openings

Selecting a Long-Jaw Sealer for Wide Bags

For compatible poly bags with long, straight openings that can be supported on a bench, shortlist HI. The listed seal lengths are 450, 600, 750, 900 and 1,000 mm. A longer bar does not by itself make a thicker or folded bag compatible.

FABLE ·

FABLE HI long-length bench hand sealer
FABLE HI long-length bench hand sealer. Product photo by FABLE.

Measure the widest point you actually seal

Measure along the seal path with the bag positioned as it will be used. For example, a 720 mm closure can be considered for the 750HI if it fits the usable sealing area with adequate handling clearance. A nominally wide bag may need a different bar after you include end folds or fixture clearance.

Plan support across the whole bar

Support the loaded package independently of the jaws. A sagging pack can pull a wrinkle into the closure or make one end hard to align. Try the package at the intended bench height and check the operator can position the ends without dragging material through the sealing zone.

Choose a different geometry when appropriate

If the package will not sit on a bench or a long straight bar cannot reach the seam, evaluate whether a rotary tool can follow the seam instead. If it cannot, the correct shortlist may be no standard machine. Do not overlap short seals in production until continuity at the junction has been checked.

  • • Test both ends and the center of a full-width seam
  • • Check any fold separately from the flat area
  • • Specify whether the entire seam must be made in one operation

FABLE models to compare

HI Series · Long-Length Hand Sealers · Specification sheet (PDF)

PFS Series · Hand Impulse Sealers · Specification sheet (PDF)

ROS-25 · Hand Rotary Sealer · Specification sheet (PDF)

Technical references

Machine dimensions and formats refer to FABLE specifications. These references describe testing principles, not certification of any FABLE machine or packaging process.

ASTM F2029 · Laboratory heat sealability

ASTM F88/F88M · Seal strength

Related sealing guides

When to Use a Hand Rotary Sealer for Bulky Bags

Impulse Sealer Selection for PE and Poly Bags

Heat Sealing Gusseted Bags and Thick Fold Transitions

Discuss your bag and application

Send the material, seam dimensions, expected quantity and destination power supply so we can review the shortlist with you.

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