The starting point
Choose the dispensing and closure format first, then compare actual dimensions and pack quantities. A bag on a roll, a press-seal bag and a slider zipper bag solve different handling tasks. “Small” and “large” are range labels, not shared dimensions across formats.
Separate dispensing from closure.
“On a roll” describes how bags are presented and separated. It does not mean that a bag has a resealable opening. A standard roll bag, a handle bag, a press-seal bag and a slider zipper bag should be separate lines in a sourcing brief.
Press-seal formats are closed by pressing the opening together; slider formats use a slider to operate the closure. Those names identify construction, not proof of airtightness, leak resistance or a particular number of reuse cycles. If one of those outcomes matters, specify it as a requirement and agree how a sample will be assessed.
Compare actual sizes instead of size labels.
| Reference | Format | Dimensions | Pack / carton |
|---|---|---|---|
| 0001yw | Standard roll | 30 × 40 cm | 100 bags / roll; 80 rolls / carton |
| 0436yw | Press-seal, small | 16 × 14 cm | 30 bags / box; 80 boxes / carton |
| 0505yw | Slider zipper, small | 23 × 15 cm | 25 bags / box; 80 boxes / carton |
Both boxed examples are called “small”, yet their dimensions and counts differ. Check the usable space below the closure and the opening dimensions on the sample. The catalogue dimensions alone do not establish usable fill volume.
For 0001yw, the table lists 30 × 40 cm while the supplied packaging shows the same dimensions in the reverse order. Confirm which measurement is length and which is width before approving your own artwork.
Build a range around an identifiable buyer task.
Start with a task such as portioning, keeping items separated or repeated opening and closing. Decide which closure and pack presentation should be evaluated for that task. Then compare a small number of sizes using samples and the same proposed contents; adding more size names does not by itself create a useful range.
- For a roll format, check separation, opening and the way the roll will be stored or displayed.
- For press-seal bags, check whether the intended user can align and close the opening consistently.
- For slider bags, check slider travel, access and finished usable dimensions.
- For every format, record material, packing count and the intended contact conditions.
These checks are a proposed purchasing workflow. No comparative performance test is reported here.
Resolve catalogue and packaging differences before printing.
Two press-seal references have explicit artwork notices: 0139yw and 0140yw. Their supplied packaging images conflict with recorded catalogue dimensions; 0139yw also has a count difference. Do not choose whichever number looks more convenient or copy that image into a new retail pack.
Use the labelled product pages to identify the conflict, then ask for a confirmed specification, current sample and corrected artwork. Keep all three linked by SKU and revision. The packaging approval checklist shows how to capture that decision.
Keep food-contact requirements and quotation units explicit.
The listed material for these examples is PE. The catalogue does not establish freezer, microwave or universal food-contact suitability. Provide the food type, temperature, contact time and destination, and request documents for the exact proposed product and conditions.
For pricing, state whether quantities mean bags, rolls, boxes or cartons. Compare like specifications before calculating a per-bag figure. Explore roll and handle bags, compare press-seal and slider bags, or send a range brief with the formats you want to sample.
Relevant product ranges
Sources & scope
Method: AI-assisted drafting and organisation using the supplied catalogue and the sources listed here. Catalogue examples are supplier references; calculations are shown so buyers can reproduce them. No independent product testing was performed for this article.
This guide combines supplier catalogue facts with general procurement guidance. It does not report independent product testing or grant a product approval. Request a correction or supporting document.