Specification desk

pof shrink film manufacturers

Resolve open choices that still block a comparable pof shrink film manufacturers quote: gauge, shrink ratio, centerfold versus single wound, print process, and which food-contact files the named resin must carry. Accepting an alternative construction without those checks mixes two products on one price.

Gauge and shrink-ratio check on a POF film roll, illustration only

Values to write before a factory substitutes

12–19 μm Common POF gauge band to confirm

Write μm and mil. A 15 μm POF web is not a 2 mil PE web. Ask the factory to restate both units on the quote.

MD / TD Shrink ratio the tunnel can run

Copying a catalog shrink ratio onto a cooler tunnel produces loose packs. State the line trial window, not a marketing maximum.

OTR / WVTR Only if the fill is aroma- or moisture-sensitive

Oxygen transmission rate and water vapor transmission rate belong on the named laminate or film, after the factory replies. They are not implied by the word POF.

CF / SW Centerfold or single wound

Open width after the fold is not the same number as a single-wound web width. Substituting one for the other without restating width is a different product.

Open choice What must be verified When an alternative is acceptable
POF vs PE Duty, shrink ratio, gauge, optical need Only if the buyer restates all four and the tunnel can run the new window
POF vs PVC / PETG Recyclability reporting versus print or sleeve performance Only if the buyer accepts the mono-material versus barrier/print trade-off in writing
Plain vs printed Color count, process, plate or digital setup Only if artwork status and extra costs are listed outside the roll price
Food-contact grade Migration testing and the named regulation Only if the substitute resin carries its own file, not a category letter

Documents to request from the named factory

  • Resin and construction sheet

    Names POF layers, gauge, and whether the web is blown film or cast film. A directory label is not this sheet.

  • Food-contact and migration testing file

    FDA 21 CFR and, if required, EU 10/2011. The file must name the quoted film. This website does not hold a site-wide food-contact badge.

  • Print and rewind specification

    Color target, flexographic printing or gravure printing or digital, core diameter, and rewind specification. Missing rewind data is a frequent cause of line jams that get blamed on "bad film."

  • Factory quality file if the buyer asks

    ISO 9001 or BRCGS Packaging that names that plant. These are supplier files, not Centerfold Shrink Film Sourcing certificates.

Checks in the order they usually block a quote

  1. Fold and width

    Confirm centerfold versus single wound and write open width in mm. This is the first substitution error on mixed RFQs.

  2. Gauge and shrink ratio

    Restate both units and the tunnel window. Seal initiation temperature is added when the same machine also seals.

  3. Print process trade-off

    Digital can reduce plate cost on short SKU lists. Conventional flexo or gravure printing often keeps unit cost and spot color steadier on long runs. Write which side the buyer accepts.

  4. Contact and recycling files

    Food-contact and post-consumer recycled content claims attach to the named batch. Mono-material POF or PE can help recycling reporting; multilayer or metallized structures may still be required for aroma-sensitive fills. Record the choice. Do not treat either side as a site slogan.

Return to the inquiry options or send the open specification list.

Send the open specification list

We will ask factories to quote the same gauge, fold and exclusions. We will not invent a savings percentage.

Request Factory Quotes