WINNINGTON Benchmark your packaging

01 · Insights

Insights and case studies.

How we think about packaging problems, plus case studies. We publish those only with the customer’s approval and only with measured results.

Articles

02 · Problem → engineering → performance

Method demonstration · Illustrative · Not a customer result

A cold-chain seal failure, worked through.

01 The problem

Chilled packs leaking after distribution.

Passed at the line. Failed somewhere between the jaw and the fridge.

02 The questions

  • Is it the seal?
  • Flex-crack?
  • Puncture?
  • Embrittlement in the cold?
  • Machine settings?

03 The engineering

  • Material
  • Jaw temperature
  • Dwell time
  • Seal pressure
  • Product & fill
  • Cold-chain profile

04 The response

Candidate structures, for example a tuned PP/PE laminate and a mono-PE option.

Mono-PE has a narrower heat window on hot jaws. We test that; we don't assume it.

05 The proof

Line trial, then measured results against criteria agreed in advance.

  • Seal strength · ASTM F88
  • Drop & cold impact
  • Migration · DoC

Nothing moves to supply until it has passed on your line.

03 · Case studies

In preparation.

  1. 01Seal integrity improvement. Reducing seal failures and leakers on high-speed lines.
  2. 02Laminate → mono-material. Replacing multi-material laminates with recyclable-by-design structures.
  3. 03Packaging optimisation. Improving line performance, reject rates and cost per pack.
  4. 04Material reduction. Downgauging proven through trials, not assumed from data sheets.
  5. 05Cold-chain performance. Toughness and seal strength at chilled and frozen temperatures.

The Winnington Packaging Review

Send us one specification.

Start with what you have: a specification, a sample or an idea. We’ll tell you plainly whether there’s a credible alternative or a better way to make it. There’s no cost and no obligation, and you’ll get a first response within 5 working days.

Benchmark your packaging Talk to our team