July 21, 2026 · Packaging Guides
POF shrink film can create a close-fitting pack around a product or product group. The letters POF identify polyolefin shrink film, but they do not define the complete roll. Film format, width, micron, shrink response, sealing equipment, tunnel conditions and product geometry all influence the result.
A search for “POF shrink film Pakistan” should lead to more than a price per roll or kilogram. A supplier needs to understand the pack and production line before proposing a useful specification. This guide organises the information required for comparison, trials and repeat orders without assuming one film suits every application.
POF is one category within shrink packaging
POF, PVC shrink film and polyethylene shrink film are different material categories. They can behave differently during sealing and shrinking and should not be substituted from a generic description such as “clear shrink roll.” POF is commonly evaluated for display packs, cartons, stationery, cosmetics and grouped consumer products.
Suitability still depends on the product and its contact requirements. Heat-sensitive items, sharp corners, vented products and packs that can deform under shrink force need application-specific review. Begin with the POF shrink film product guide, then document the line and product details before requesting material.
Select the roll format before the micron
Centre-folded film
Centre-folded film is doubled along its length and opened around the product during packing. State the folded width clearly so it is not confused with the fully opened width.
Single-wound film
Single-wound film is one flat web and may be required by automatic wrapping systems. Specify web width, winding direction, roll length or weight, core dimensions and the machine’s roll-diameter limit. Follow the equipment manual for any special fold or perforation requirement.
Measure the product and the film accurately
Record the product’s maximum length, width and height, including protrusions and irregular corners. For multipacks, measure the final arranged bundle rather than one unit. The film must provide enough coverage for the seal while avoiding unnecessary excess that can create loose corners or waste.
If an existing film runs successfully, record its format, lay-flat or web width, micron, core, roll diameter and roll weight. Photos of the roll label and finished pack can prevent terminology errors. When thickness is shown in gauge or mil, use the micron-to-gauge converter to place supplier quotations on one basis.
Micron is a starting point, not the whole answer
Specifications such as 15, 19 and 25 micron are often discussed in commercial enquiries, but the correct choice depends on pack weight, edge profile, required toughness, seal conditions and shrink force. Moving to a thicker film is not a universal cure: it changes material use and may require different machine settings.
Ask whether the proposed micron is nominal and what tolerance applies. If the supplier recommends a different thickness from the current film, request the technical reason and evaluate it in a controlled trial. The approved specification should describe the film, not simply state “standard POF.”
Share the sealing and shrinking equipment
POF film interacts with the complete packing line. Identify the sealer type, tunnel or heat method, line speed, pack spacing and any temperature or dwell settings recorded for the current material. Also state whether the line runs continuously or in short batches.
Airflow, belt speed, product mass and equipment condition affect the heat received by the pack. Change one variable at a time during trials and record the result.
Troubleshoot the pack systematically
| Observed issue | Items to investigate |
|---|---|
| Weak or opening seal | Seal temperature, dwell, pressure, contamination, alignment and film compatibility |
| Burn-through or brittle seal | Excess heat or dwell, pressure, blade or wire condition and film position |
| Loose corners or “dog ears” | Film size, product geometry, perforation, airflow, temperature and belt speed |
| Wrinkles or loose film | Film excess, uneven heat, pack shape, line speed and loading consistency |
| Distorted or crushed product | Shrink force, heat exposure, product support, pack arrangement and film selection |
This table is a diagnostic starting point, not a remote machine-setting instruction. Operators should follow the equipment manufacturer’s procedures and site safety requirements. When reporting a defect to a shrink film supplier in Pakistan, send photos of the seal area and the complete pack plus the settings and line speed used.
Run a controlled production trial
- Agree the trial roll’s format, width, micron, core and identification.
- Select representative products, including difficult sizes or sharp profiles.
- Record the starting equipment settings and current film performance.
- Check seal continuity, film fit, corners, appearance and pack handling.
- Change one line variable at a time and document the outcome.
- Retain an approved pack, roll label and written settings for repeat orders.
Compare cost per accepted pack
Roll price alone can hide differences in usable width, micron, roll length, core weight, setup waste and rejection rate. Compare quotations on the same format and specification, then consider how many accepted packs the roll produces under stable conditions. An apparently cheaper film may create more scrap if it does not suit the equipment or product geometry.
What to ask a POF shrink film supplier
Buyers in Karachi—including SITE, Korangi and other industrial locations—should compare technical support as well as delivery. Ask how the proposed film is identified, what dimensional and micron tolerances apply, whether a trial quantity is available, and how repeat-roll traceability is handled. A business known for plastic bags manufacturing does not automatically offer every shrink-film construction, so verify the actual material and format being quoted.
For additional industry context, see Tanvir Packages’ overview of POF shrink film in Pakistan. Any product claim or document should still be confirmed against the supplier’s current written specification for your order.
POF quotation checklist
- Product or bundle dimensions, weight, shape and photographs
- Centre-folded, single-wound or machine-specific film format
- Film width, micron, roll length or weight and current roll label
- Core inside diameter, core length and maximum roll diameter
- Sealer, tunnel, machine model, line speed and current settings
- Observed problems with the existing film or finished pack
- Monthly consumption, trial requirement and delivery location
- Any sensitive-contact, documentation or storage requirement
Send this information through the packaging quotation form. A complete brief allows technical questions to be resolved before commercial comparison.
Frequently asked questions about POF shrink film
What does POF shrink film mean?
POF means polyolefin shrink film. It is supplied in different formats, widths, thicknesses and grades, so the abbreviation alone is not a complete specification.
Is 15 micron or 19 micron POF better?
Neither is universally better. Product weight, edges, appearance, equipment and handling determine the appropriate micron. Test the film on the actual line.
What is the difference between centre-folded and single-wound film?
Centre-folded film is doubled along its length; single-wound film is one flat web. The machine determines the required format and width convention.
Why does shrink film form dog ears?
Loose triangular corners can relate to excess film, product geometry, perforation, heat distribution or line settings. Diagnose the system rather than assuming thickness is the only cause.
What should I provide for a POF quotation?
Provide the product dimensions and photos, film format, width, micron, core, roll constraints, equipment, current settings, consumption and delivery location. Include a current roll label or sample when available.