Pouch and laminate
Provide material construction and the full format range for testing.
Specification inputs
Specification inputs for pouch sealing.
- Pouch samples
- Production-intent empty and filled pouches across the required formats.
- Material construction
- Laminate, seal layer, thickness and relevant supplier information.
- Output requirement
- Required finished-pack output through filling, sealing and discharge.
- Pack geometry
- Pouch dimensions, zip, gusset, spout and features near the seal.
- Product and headspace
- Target fill, settling, piece size, dust, oil and drop-height considerations.
- Pouch presentation
- Opening, transport, jaw alignment and product below the seal zone.
- Sealing conditions
- Temperature, pressure, dwell and cooling to prove on the actual pouch.
- Seal cleanliness
- Product, wrinkles, static and contamination to inspect during the trial.
- Inspection method
- Agreed visual and physical checks, with failed examples retained.
- Cooling and support
- Pack support and downstream handling while the seal stabilises.
- Changeover
- Pickup, opening, fill, seal alignment, coding and outfeed after a change.
- Acceptance evidence
- Seal quality, leaks, machine state, normal stops and restarts.
Application review
Application questions for pouch sealing.
Product in the seal area
Review scatter, rebound, settling and the complete product path.
Closure and handling
Inspect the seal and support finished packs through cooling and outfeed.
Scope to confirm
- Pouch, product and upstream dosing details
- Seal conditions and pouch presentation
- Inspection, cooling and downstream handling
- Trial method and acceptance examples
Sizing the solution
Information to include with your enquiry.
Send empty and filled pouch samples, drawings, laminate information, target fill, headspace, seal requirements and the intended upstream dosing method.
- Empty and filled production-intent pouches
- Material, seal position and format details
- Target fill and upstream dosing method
- Output, inspection and cooling requirements
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Seal quality after filling
Protect the pouch seal area from product, wrinkles and an uncontrolled cooling cycle.
A pouch can be filled to the correct weight and still fail commercially if product enters the seal area, the pouch is not presented flat, the seal parameters do not suit the laminate, or the pack is handled before the seal has stabilised. The weighing, pouch presentation, filling and sealing stages should therefore be assessed as one process.
| Observed issue | Checks to make | Process boundary |
|---|---|---|
| Product in the seal | Dose timing, chute alignment, scatter, static, pouch opening and settling time | Weigher discharge and pouch handling |
| Wrinkled or incomplete seal | Pouch presentation, gusset/zip geometry, jaw alignment, film construction and trapped air | Pouch transport and sealer setup |
| Seal opens after discharge | Cooling time, pack support, downstream pressure and product temperature | Sealer and outfeed handling |
| Intermittent leak | Seal contamination, parameter history, pouch batch, surface condition and test method | Material, filling and sealing interaction |
| Slow line output | Pouch pickup/opening, fill wait, seal dwell, cooling and outfeed stops | Complete pouch cycle |
What pouch samples should be tested?
Use production-intent pouches from the expected supplier and batch range, including the smallest and largest formats. Provide the complete laminate, zip, gusset, spout or special feature information and the required seal-quality method.
How can a weighed dose affect the seal?
Product can scatter, rebound or remain suspended while the pouch moves to sealing. Piece size, dust, oil, static, drop height and timing determine whether the seal area stays clean. Review the complete product path.
How should seal quality be checked?
Agree the visual and physical inspection method before the trial. The correct method depends on the pouch, product and commercial requirement. Retain failed examples and the machine state associated with them.
What should be checked after a pouch changeover?
Confirm pouch pickup, opening, fill position, headspace, product settling, seal alignment, coding, inspection and outfeed. Run enough packs to include normal stops and restarts rather than accepting only the first successful cycle.
Pouch and product review
Send filled and empty pouch samples with the product.
Include pouch drawings, laminate information, target fill, headspace, seal requirements and the intended upstream dosing method.
Request a pouch sealing review