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Pillow bag, side gusset bag and quad-seal bag

Pillow vs Side Gusset vs Quad-Seal Bags

All three are formed from rollstock film on a vertical form fill seal machine. They differ in shape, in the machine that makes them and in what has to be tested. Snacks, nuts and dry pet food are listed for all three.

Side by Side

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 Pillow bagSide gusset bagQuad-seal bag
ShapeBack seal, plus top and bottom sealsBack-seal bag with a fold pressed into each sideFour sealed vertical edges, with or without a back seal
Our machineSVC260, VP Series, VP-YTSVC260 with the optional gusset assemblyVGT Series
Machine maximum*SVC260 160 bags/min; VP 20–90 bags/minSVC260 160 bags/minVGT 80 bags/min
Size rangeSVC260 up to 260 × 400 mm; VP up to 250 × 400 mmSVC260 up to 260 × 400 mmFront panel 70–300 mm, gusset 30–100 mm, length 100–400 mm
Versions and optionsChain bags on the VP SeriesPillow bags on the same machineOne-way degassing valve, gas flush, zipper, flat-bottom assembly and more
Listed productsFrozen foods, pet food, nuts, snacks, powder, riceFrozen foods, pet food, nuts, snacksNuts, snacks, powder, grains, rice, pet food, coffee

*Machine maximums. Actual output depends on product, fill weight, bag size, film and configuration. Sizes are width × length.

Pillow Bag

The standard back-seal bag. It runs on the SVC260 for higher outputs and on the VP Series for compact lines; the VP-YT adds a built-on multihead weigher.

Choose it when a flat pack suits how the product is sold, and you want the widest choice of machines and dosing systems.

Check in the test: product drop, product in the seal, and print registration on printed film.

Side Gusset Bag

A back-seal bag with folded sides, for a fuller, squarer pack. On our range it is made on the SVC260 with the optional gusset assembly; the same machine makes pillow bags as standard.

Choose it when you want a squarer pack and the output suits the SVC260.

Check in the test: fold consistency bag after bag, and the finished appearance with your film.

The VGT lists a side gusset width, but that is a quad-seal dimension. Simple side gusset bags are made on the SVC260.

Quad-Seal Bag

Four sealed vertical edges give the bag a sharp, upright shape. The VGT Series is built for it, with or without a back seal, and with a one-way degassing valve where the product needs one.

Choose it when the pack should stand upright with crisp edges, or needs a valve, zipper or flat bottom, and the output suits the VGT.

Check in the test: edge seal quality, product settling before the top seal, and any options fitted.

How to Choose

  1. Start from the pack you want to sell: flat, squarer with folded sides, or upright with four crisp edges.
  2. Check the bag width, length and gusset against each machine's range.
  3. Compare your target in good packs per minute with the machine maximum, which is a ceiling, not a line result.
  4. List the options you need. A valve, zipper, gas flush or flat bottom points to the VGT.
  5. Test your product and film in the chosen bag before the configuration is fixed.

Not Sure Which Bag Fits?

Send your product, fill weight and the pack you have in mind. We test it in the format you choose; the test is free, you cover sample shipping.

Request a Packaging Test

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Send your product, package and target output. We will reply with the next engineering step.

  1. 01Product
  2. 02Package
  3. 03Output
  4. 04Line scope

We reply within 1 working day.

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