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4-side sachet routes

4 Side Seal Pouch Packaging Machine

Four sealed edges. Match the forming setup to your sachet.

A 4-side-seal pouch is a flat sachet sealed on all four edges. Spack Machine offers VFFS configurations for this format. Start with your product, fill amount and finished sachet size, then confirm the film and forming setup.

Send project details Open the VFFS pouch section

3-side sachets belong on the 3-side sachet guide. Stick packs belong on the stick pack guide. The parent cluster is the sachet guide. Premade zipper stand-up belongs on a rotary or horizontal premade host.

Printed shampoo four-side-seal sachet, shown as a finished bag format reference
Finished 4-side sachet format reference. Confirm your own bag dimensions and film before selecting a configuration.
Best fit
US, UK and Australian brands or co-packers screening a first automatic line for a compact single-serve pack that is sealed on all four edges.
Not this page
Compare seal layout and pack presentation in the 3-side vs 4-side guide.
Start with
A drawing that shows four seal bands (no folded edge), finished width and length, the product and dose, and bags per shift.

01

Finished pack

Four sealed edges, no folded side

A 4-side-seal sachet is sealed on every edge. There is no folded side and no back fin. Dedicated web and tooling — not a 3-side bag with one extra seal added later.

SEAL SEAL SEAL SEAL
Teaching drawing: four solid seal bands, no dashed fold. Mark all four edges on your own bag drawing — this is not a size chart.
  • 01
    Sealed on every edgeTop, bottom and both sides are heat-sealed. There is no folded side. That is the difference from a 3-side sachet.
  • 02
    Dedicated web and toolingThe sachet guide already states this: it is not a 3-side bag with one extra seal added later. 3-side and 4-side do not share one former.
  • 03
    Flat, compact single-serveA 4-side sachet lies flat. It is not a zipper doypack and not a stick. Tear notch and coding are drawing questions, not assumed extras.
  • 04
    Not a back-fin pillowA search for a 4 sided fin seal pouch usually means a pillow — a tube with a longitudinal back fin. That is a different forming set.

Format reference. Use the example to identify the seal layout. Your finished-bag dimensions and film specification are needed to confirm the forming and sealing setup.

02

Vs other bags

4-side vs 3-side vs stick vs pillow

This table is only enough to stop a mis-route. Do not treat a 4-side sachet as a 3-side bag with one extra seal. The long comparison stays on the vs article.

Minimum distinction for procurement. Cost, speed and film claims are not made here. Long comparison stays on the vs article.
Decision 4-side (this page) 3-side sachet Stick Pillow
Finished shape Flat pack, no folded edge Flat pack, one folded edge Narrow tube Tube, back fin
Seal layout Sealed on every edge One fold and seals on the other three Longitudinal back seal plus top and bottom cross seals Longitudinal back (fin) seal plus top and bottom cross seals
Packed from Roll film on VFFS, 4-side forming set Roll film on VFFS, 3-side forming set Roll film on VFFS, stick forming set Roll film on VFFS, pillow former
Stands on the shelf? No — it is a flat sachet No — it is a flat sachet No — it is a slim stick No, unless gussets are added — then it is no longer a plain pillow
Compare machines VFFS pouch section 3-side sachet guide + VFFS Stick hub Pillow hub

Still choosing the seal layout? Compare pack structure and presentation in 3-side vs 4-side seal: key insights.

03

How it is packed

How a 4-side sachet is packed on VFFS

Unwind the roll, form the four-edge pack, dose the product, then seal and cut. Each bag format needs its own forming and sealing setup.

Vertical form-fill-seal machine with the film path visible

Stage 1

Unwind and register the film

Rollstock is fed into the film path. If the web is printed, a photoelectric eye reads the registration mark. Finished bag width and film-roll width are different numbers — send both.

Stage 2

Form the four-edge pack

The web is arranged so all four edges can be sealed. Pillow and stick form a tube instead. 3-side and 4-side do not share one former.

Stage 3

Dose the product

Powder, granules, liquids and small solids use different filling routes. Dust on the seal, bridging, viscosity and piece count decide the filler — not the word “4-side”.

Stage 4

Seal, cut and discharge

The four edges close the pack, the cut separates it, and the finished sachet leaves for coding, checkweighing or cartoning if those stations are in the project.

Machine reference. The Stage 1 photograph shows a VFFS machine. The following steps describe the packing sequence; the forming and sealing setup must be matched to your bag and film.

Roll film

The machine forms the bag from a roll of film, fills it and cuts the finished pack.

Film structure, roll width, core, outer diameter, unwind direction and the eye-mark still have to be confirmed with the finished-bag drawing. They are not the same input as bag width.

Premade pouches

The bag arrives already made. The machine only opens, fills and seals it.

If you buy zipper, stand-up or other premade pouches, you are on the rotary or horizontal premade family — not a 4-side VFFS host.

04

What you can pack

The product decides the filler, not the bag name

Start with how your product flows and how it must be handled. A product name alone cannot confirm dosing accuracy or a clean seal.

Powder product photograph used as a visual screening example

Powders

Dust on the seal is the usual failure, not brochure speed. An auger route is a common starting point. Free-flowing and cohesive powders still need a sample. Industry notes: powder packaging.

Granule product photograph used as a visual screening example

Granules & solids

Cup, linear weigh or multihead weigh is chosen from piece size, fragility and target dose. Counting is a different question. Industry notes: granule and solid packaging.

Liquid product photograph used as a visual screening example

Liquids & pastes

Pump or piston routes follow viscosity, temperature, particles, foam and clean-down. Splash control belongs in the same conversation as the seal. Industry notes: liquid and paste packaging.

Small-solid product photograph used as a visual screening example

Small solids

If a feeding and dosing route can deliver the piece without damaging it or contaminating the seal, the VFFS host can be discussed. A name such as tablet or pill is not a medical claim.

Screening images. Visual examples of product state, not measured particle-size, viscosity or hygiene specifications. Compatibility is confirmed by running your own sample. Pharmaceutical projects require a separate review of hygiene, materials and documentation.

05

Compare machines

Which machine page should you open?

Compare the VFFS families below for your 4-side sachet. The bag drawing, dose and film determine the forming setup and filler; specifications for one configuration do not apply automatically to another.

Published vertical form-fill-seal machine, used as a family reference photograph
Published VFFS-family reference photograph, not a quoted 4-side configuration.

VFFS-220 / 320 / 420

Vertical form-fill-seal machine

A roll-film machine family with forming setups for 3-side sachets, 4-side sachets, stick packs and pillow bags. Start with finished pouch width, then confirm the filler, forming setup and film together.

What the machine has to do

Unwind and register the web, form the four-edge pack, receive the dose, seal and cut. Premade zipper pouches are out of scope on this host.

Published screening figures

Pouch width screen
220: up to 100 mm (3.94 in)
320: up to 150 mm (5.91 in)
420: up to 200 mm (7.87 in)
Family bag-size range
45 × 20–280 × 200 mm
(1.77 × 0.79–11.02 × 7.87 in)
Filling routes named
Auger; volumetric cup; weigher; liquid pump / piston
Frame / warranty
304 stainless-steel frame listed;
12 months from receipt
Open the VFFS pouch section

VFFS 320S / 420S / 620S

High-speed pouch packing machine

Compare the VFFS 320S / 420S / 620S series when reviewing output requirements and bag sizes. Use the model specifications on its machine page, then confirm the forming setup, filler and achievable rate for your product.

What the machine has to do

The machine forms, fills and seals roll-film bags. Check the finished width and length for your format; a family-wide size range does not mean every model or forming setup covers the full range.

Published screening figures

Family named on that page
VFFS 320S / 420S / 620S
Role on this hub
VFFS 320S / 420S / 620S series
Bag-size / speed figures
See the model specifications and confirm the rate for your product
Multilane matrix
Not published on this site — do not infer lanes from another brand
What to send
Finished bag, four-edge drawing, dose, film and bags per shift
Open the high-speed VFFS page

Initial selection. Use the listed widths to narrow the frame size, then confirm bag length, film, forming setup and filler together. The two machine series have their own specifications. Published speeds are a starting point for discussion; your product and finished bag determine the achievable production rate.

06

Compare formats

Start from the sachet hub, then this forming set

Compare 3-side, 4-side, stick, pillow and shaped sachets in the sachet guide. Once you have chosen the seal layout, use the VFFS pages to review the machine configuration.

Where to go next. Width figures are published screening values from the VFFS page.
If the bag is Open first Then
4-side sachet (this page) Stay here for four-edge anatomy VFFS-220 / 320 / 420 — published maxima 100 / 150 / 200 mm (3.94 / 5.91 / 7.87 in)
Still choosing 3-side, 4-side or stick Sachet packaging machine Come back to this hub only after the drawing shows four seal bands
3-side sachet 3-side sachet guide Compare the VFFS families with the appropriate forming setup
Stick pack Stick hub Not a slim 4-side sachet

One former is not every sachet. Pillow, 3-side, 4-side, shaped sachet and stick do not share one universal forming and sealing route. Dual-inch figures above are conversions of the published millimetres — not a US standard claim.

Compare formats

If you are unsure which bag format you need, start with the sachet guide and compare the seal layouts.

Open the sachet hub

07

Project inputs

What to define before asking for a configuration

Start with a photo or sample of your pack, the product, the fill amount and your target output. Send the details you already have; missing film or machine information can be clarified during selection.

01
Four seal bandsConfirm there is no folded edge. If one edge is a fold, you are on the 3-side hub, not here.
02
Finished bag W × LThe sachet you sell, in millimetres. Not the same number as film-roll width. Screen it against VFFS-220 / 320 / 420.
03
Product and dosePowder, granule, liquid/paste or small solid — plus target grams or millilitres and the tolerance your label accepts.
04
Film rollStructure, thickness, roll width, core, outer diameter, unwind direction and registration mark. Ask the film supplier for the data sheet.
05
Output per shiftBags per shift and how many shifts, rather than a single peak bags-per-minute figure copied from another page.
06
Tear notch / openingStraight cut, serrated cut, tear notch or another opening — mark it on the drawing. Zipper is not a standard 4-side option on this hub.
07
Coding and the rest of the lineDate or lot mark, checkweigher, carton. A “sachet packaging line” is scoped station by station, not assumed included.
08
Site utilitiesPower the building actually supplies, room humidity, floor area. They are not assumed in the host quote.

Sample validation. Compatibility is confirmed with a production-representative product sample and your intended film. A product name or a photograph alone does not confirm dosing or sealing.

Send project details

08

Before you order

What to confirm when you import the machine

Spack Machine builds these machines in Shantou, Guangdong, China. Before ordering for a US, UK or Australian plant, confirm utilities, documentation, acceptance testing and shipping responsibilities in writing.

Power and utilities at your site

Confirm supply voltage, phase, frequency and compressed-air requirements for the quoted configuration. For example, a US 480 V / 60 Hz supply or a UK 415 V / 50 Hz supply must be checked against your site and the machine specification; neither is a default compatibility claim.

Ambient humidity

Powders cake, films slip and seals weaken when the plant runs humid. If that is your room, raise it early — it affects sustained output more than peak rate.

Documentation for your market

Decide which certificates and food-contact declarations you need on arrival, and who issues them — the machine builder or the film supplier. This page does not claim a destination-market approval.

Acceptance before dispatch

Agree what the machine has to demonstrate before it ships — which product, which film, which bag, what weight tolerance — and that it runs your sample, not a generic one. That is the FAT conversation.

Shipping, duty and clearance

Crated dimensions and weight drive freight; the HS classification drives duty. The customs clearance walkthrough lists what a US, UK or Australian broker will ask for.

Spares, tooling and format change

List wear parts and the change parts for each bag size, and include their cost and delivery arrangements in the quotation. The VFFS page states a 12-month warranty from receipt, with freight for replacement parts paid by the buyer.

Before you order. Confirm lead time, installation and after-sales responsibilities in your quotation. The packaging machine buying guide covers the questions to work through with your supplier.

09

Common questions

4 side seal pouch packaging machine FAQs

Answers to the questions buyers ask when comparing bag formats, machine configurations and project costs.

What is a 4 side seal pouch packaging machine?

A 4 side seal pouch packaging machine is a rollstock form-fill-seal host that makes a flat sachet sealed on every edge, then fills and cuts it.

Spack Machine offers this format on VFFS configurations with a 4-side forming setup. Review the VFFS pouch section to compare frames, then confirm your bag, film and filler together.

What is the difference between a 4-side and a 3-side sachet?

A 4-side sachet is sealed on every edge. A 3-side sachet has one folded edge and seals on the other three. They do not share one former.

For a closer look at seal layout and pack presentation, read 3-side vs 4-side seal: key insights. Open the 3-side sachet guide if one edge is a fold.

Is a 4 side seal sachet packaging line included?

No. A 4-side seal sachet packaging line is filler + host + coding (and any checkweigher or carton), quoted separately.

Define the bag, product, fill amount and required output first. Ask for a quotation that identifies the machine, filler and each additional station, including what is excluded.

Do you publish a multilane 4-side machine?

No. Spack has no published multilane 4-side matrix.

Send your proposed multilane sachet layout for review. Lane count, film path, dosing and output need to be assessed together before a configuration can be offered.

Is this a 4-side sealing flow wrapper or a side sealer?

No. A 4-side sealing flow wrapper wraps a solid piece on a horizontal infeed. A side sealer in shrink-tunnel language is a different machine.

For a solid biscuit or bar fed horizontally, see the flow-wrap machine. A bag with a back fin seal is covered in the pillow pouch guide.

Is making a 4-side pouch the same as filling it?

Not always. A making machine / converter produces empty pouches. A 4-side pouch packaging machine forms, fills and seals from roll film in one line.

If you only need empty 4-side bags, say so in the enquiry. Do not force a converting RFQ onto a VFFS host.

Do you add zippers to 4-side sachets?

Zippers and spouts are not listed as standard options for this configuration. If either is needed, compare the premade pouch routes below.

Open the doypack guide and a rotary or horizontal premade host.

What speed can I expect?

Screening figures live on the VFFS page: a headline of up to 70 bags per minute, and a typical 15–60 packs per minute range. Both are orientation, not a guaranteed production rate.

Actual output depends on dose, bag length, film, sealing time, filler and product behaviour. Compare quotations using the same product and bag, including sustained output per shift.

How much does a 4 side seal pouch packaging machine cost?

No figure on this page would be meaningful, because price follows the finished pack, the filler and the stations around it.

A plain 4-side sachet, the same bag plus coding and cartoning, and a 3-side or stick line sit at different levels. Fix bag, dose, film and output per shift, then ask for a comparable quotation.

Can one forming set make every sachet format?

No. Pillow packs, 3-side sachets, 4-side sachets, shaped sachets and stick packs do not share one universal forming and sealing route.

One line normally covers one inner-bag geometry and its close variants. If you sell two formats today, expect to compare two forming sets on the sachet guide.

Where are your machines built?

Spack Machine builds these machines in Shantou, Guangdong, China, for export to the destination agreed in your order.

For an imported machine, confirm your destination, site utilities, required documentation and local installation arrangements before ordering.

What do you need to recommend a configuration?

Start with a photo or drawing of your finished bag, the product, fill amount and target output. If you have them, include finished width and length, seal layout and film specifications.

If the project is a “sachet packaging line”, list coding and secondary pack as questions. A production-representative sample confirms dosing and sealing; a photograph does not.

10

Read next

Keep reading

Compare bag formats, review machine specifications and prepare the details needed for a quotation.

11

Next step

Send your project details

Tell us the 4-side sachet you sell, the product going into it and the output you need. That is enough to put you on the right VFFS page — or to split filler, host and coding as a line.

Request a configuration review Open the VFFS pouch section

Project confirmation. Machine, forming set, filler and output are confirmed against your samples and site conditions before anything is quoted as final.

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