Choose a tea side gusset or flat bottom pouch by the filled product volume, required aroma protection, opening routine and selling fixture. Flat bottom geometry may improve a particular display, while a side gusset format may suit an established filling and merchandising system. Neither shape alone establishes better flavour retention or longer shelf life.
Name the tea before naming the pouch
Loose whole leaf, broken leaf, fine tea and blends containing other ingredients create different product-fit questions. Record the tea form, processing, blend version, target mass and representative bulk volume. A gram-capacity label on a supplier image cannot establish the right dimensions for every tea.
Describe the intended occasion and channel. A household refill, a premium loose-leaf retail product and a foodservice supply pack can require different access and presentation. Keep the buyer's selling price and replenishment pattern in the brief so the packaging decision remains commercially relevant.
Include expected storage and distribution conditions for technical review. Tea can be affected by its environment and interactions with the packaging. The product team needs enough information to choose the relevant evidence and quality endpoints for the actual blend.
Separate the structural comparison from the barrier comparison
A side gusset expands through folded side areas. A flat bottom construction uses a defined base and a different arrangement of panels and seals. Compare finished drawings and actual filled prototypes because naming conventions do not define every supplier's construction.
Request the full material specification and closure references for each candidate. If the structures differ, the trial is comparing more than geometry. Record those differences so a favourable storage result is not mistakenly attributed to the flat base or side fold.
Mondi's pouch-format information provides a primary supplier example of configurable formats. Its product claims apply to its own offering. For procurement, the exact proposed structure, filled shape and opening features matter more than a general format description.
What recent tea research adds
The 2025 paper Tea storage process: Flavor scalping in green tea caused by plastic packaging materials examined volatile compounds and interactions between green tea and packaging materials. It considered aroma adsorption and packaging-related odours, rather than comparing pouch base shapes.
Its useful implication is that an aroma discussion should include product-pack interaction, not only oxygen and moisture transmission figures. It does not justify applying one material recommendation to every tea blend or copying an expiry period into a different commercial specification.
Ask the technical team whether the candidate's contact materials, complete laminate and storage conditions have suitable evidence for the tea. A structure can look appropriate in a catalogue while still needing a project-specific aroma and product-quality evaluation.
Measure filled fit and shelf behaviour
Fill both candidates with the same representative tea mass. Observe settling, panel shape, base support and closing clearance. Repeat with normal product variation so the approved dimensions are not based on a single unusual fill.
Measure the actual shelf or display tray. Record the number of units that fit, the visible front panels and the clearance required for replenishment. A flat bottom pouch that stands well may still occupy more useful facing width than the fixture can accommodate.
Check the pack as it empties if customers will use it repeatedly. Opening access, product removal and reclosure may matter more over time than the full pack's first appearance. Record whether tea catches around a feature or whether the customer's normal scoop or pouring action remains practical.
Compare the information panels
| Panel task | What to test on both candidates |
|---|---|
| Product recognition | Brand, tea type and blend should be clear at normal shelf distance |
| Variant selection | Similar blends should remain distinguishable without close inspection |
| Quantity and value | The fill quantity should be legible and comparable with the price |
| Brewing communication | Approved instructions should remain readable in the filled shape |
| Traceability | Batch and other required information should have an agreed usable location |
Extra panels create space but also require careful hierarchy. Avoid spreading essential identification across folds merely because the dieline offers more printable areas. Review the filled prototype and mobile thumbnail alongside the flat artwork before approval.
Calculate the complete format premium
Obtain equivalent quotations for structure, printing, dimensions, opening features, setup, filling, final closing, outer packing and delivery. State quantity by blend and design. A low unit price at a large commitment can create stock exposure if the blend or artwork changes.
Here is an invented method example. Candidate A adds ₹0.90 per accepted pack compared with candidate B and requires ₹6,000 more initial setup. At 15,000 packs, the added cost is ₹13,500 + ₹6,000 = ₹19,500, or ₹1.30 per accepted pack for that first batch.
On a repeat batch where the ₹6,000 genuinely does not recur, the illustrated premium falls to ₹0.90. These figures are invented and do not describe side gusset or flat bottom market prices. Ask the supplier to state what makes a setup charge recur before treating it as one-time expenditure.
Ask what the premium is supposed to achieve
If the purpose is improved display, measure shelf stability and visibility. If the purpose is a more convenient opening, observe the actual access task. If the purpose is higher selling price, test conversion and contribution at that price with the intended customers.
Do not combine all possible benefits into an unsupported sales story. A new base may solve display problems without changing willingness to pay. A clearer label may improve selection without changing the structure. Identifying the actual problem can reveal a simpler and cheaper improvement.
Record the minimum result needed to continue. For example, the business might require successful fixture fit, an accepted storage study and a contribution outcome that covers the premium. The particular thresholds must come from the buyer's business and technical owners, not from a generic packaging article.
Design the storage evaluation around the blend
Use the intended product batch, filling route, closure and complete candidate references. Document storage conditions and the measures selected by the technical reviewer, including sensory or analytical methods where appropriate. Keep unopened storage evidence separate from repeated household use.
If the design contains a window or a different contact material, record it as part of the construction change. Do not assume that a small visual feature has no technical consequence. Review its role with the material and product owners before copying an earlier approval.
Maintain a retained reference and a clear record of what passed, failed or remained inconclusive. A short demonstration with good aroma cannot establish a full commercial shelf life. Product claims should reflect the complete evaluation and the intended storage conditions.
Compare cartons and replenishment
Build actual filled cartons and record count, dimensions and gross mass. A format change can affect carton layout, shelf replenishment and stockroom space even when the tea quantity is unchanged. Request delivery quotations to the real receiving location with the same scope.
For a brand serving several regional industrial markets, compare the lanes individually rather than assigning one national freight percentage. For Sri Lankan enquiries, include the agreed delivery term and importer responsibilities. A format that works for a nearby repeat order may have different economics in a small export shipment.
Observe the actual tea-removal method
Include the customer's intended scoop, spoon or pouring action in the prototype review. Whole leaf and fine tea can behave differently around an opening, so a neat pour of one reference product cannot qualify every blend. Record where tea remains and whether the user can reclose the pack comfortably.
For a foodservice pack, observe the operator's normal work sequence. For a household pack, review the repeated access and storage pattern described in the brief. Keep these observations separate from analytical aroma results so a usability preference is not presented as a freshness finding.
If the opening needs revision, review the geometry, artwork and closing interface together. A larger opening may help access while changing the available panel or filling clearance. The approval should cover the complete revised drawing rather than only one attractive feature.
Tea side-gusset versus flat-bottom: a practical specification example
A format comparison is useful when it answers the actual buying question. Define the customer action and the filled product before deciding that one appearance is better. A valve, window, zipper or matte surface changes a different part of the specification. Some features can coexist, so compare their purposes and constraints rather than forcing every decision into an either-or choice.
For this decision, start with the loose-leaf bulk and required shelf footprint. The useful output is filled samples with side and base dimensions. Put that output beside the relevant quotation, drawing or sample rather than leaving it in a separate email. This is an illustrative decision exercise, not a report of a completed customer trial.
Product references to make the discussion concrete
The catalogue includes flat-bottom pouches and jar-shaped zipper pouches. These examples show different physical constructions; they are not interchangeable specifications. A box-style base gives the filled pack a distinct footprint, with separate front, back and side panels. Compare a plain top opening with a regular zipper, and use filled samples to decide the shelf depth and panel proportions.
| Format reference | Material or construction to clarify | Details to include in the brief |
|---|---|---|
| Flat-bottom pouches | Flexible laminate with paper-look or opaque outer options; the appearance alone does not identify the full layer structure. | Base width and full opened depth; net fill and product bulk. |
| Jar-shaped zipper pouches | Clear or frosted flexible pouch construction with a zipper; the jar shape is a profile, not a rigid container. | Usable cavity and narrowest opening; die-cut outline and corner radii. |
Use the reference pictures to identify the base, side panels, window or opening that you mean. A picture cannot supply the missing dimensions or material layers. If a photograph shows a finish or closure you do not want, state that difference explicitly; otherwise a visual reference can introduce an unintended requirement.
Complete the record before requesting the next sample
- Attach filled samples with side and base dimensions. Identify the product or SKU and the date of the observation.
- Record the loose-leaf bulk and required shelf footprint. Keep confirmed information separate from proposed values and questions for the supplier.
- Add the actual fill weight or volume, the dimension convention, material proposal and intended closure. Include the number of designs and quantity per design when requesting a quotation.
- State which question the next drawing, sample or quotation must resolve. A change of size, closure or material should remain visible alongside the earlier reference.
This record makes the next conversation specific. It lets the design, purchasing and packing teams work from the same proposed item and shows which decision still needs evidence. Review the related product pages for format details, or prepare a custom packaging brief with the unresolved requirements.
Make the decision explicit
Choose flat bottom when the filled geometry, panel layout and use experience solve a measured problem worth the added complete cost. Choose side gusset when the established route and presentation already meet the brief efficiently. Keep aroma protection tied to the qualified structure and process in either case.
Send Navkar Poly Print the tea form, blend information, target mass and volume, opening needs, fixture dimensions and quantity by design. Request matched proposals and a product-specific evidence plan. Give procurement and B2B heads separate conclusions for technical protection, customer use, presentation and delivered economics.
Sources and scope.
These references support the technical discussion. Product photographs illustrate formats; the material, dimensions and suitability of the proposed pack are confirmed for each project.
- Mondi's pouch-format information
Primary supplier or technical reference for the linked format or component question; no Navkar capability, test outcome or shelf-life claim is transferred.
- Tea storage process: Flavor scalping in green tea caused by plastic packaging materials
Include aroma compatibility in material review. Not a pouch-base comparison or universal tea-material prescription.
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