
A Reclosable Zipper for Paper Pouches: Sealing Development Is Not Recycling Proof
Fresh-Lock says it is developing zippers that can seal to paper pouch structures; finished-pouch availability and recycling claims need separate evidence.

Fresh-Lock says it is developing zippers that can seal to paper pouch structures; finished-pouch availability and recycling claims need separate evidence.

The partners combine paper substrates, a starch-based grease barrier and heat-seal coatings. A reported pass in Western Michigan University’s Part 1 recyclability test is not a blanket recycling or food-contact certification.

Ravenwood describes a Nobac 5000 Twin Head applicator applying D-Wrap labels to Mr Whippy’s two-, four- and six-doughnut trays. The announced production target is not measured throughput; this case sets out the missing pack and line evidence.

Sun Chemical says its upgraded SolarFlex FSP range meets German and Swiss printing-ink requirements and passed customer migration and odour assessments at high printing speed. The reviewed public accounts disclose neither independently reviewable results nor a finished-pack construction.

Nespresso is ending its paper-based capsule range, citing consumer feedback and coffee quality. The reported decision does not establish a tested defect in one barrier layer or rule out paper-based coffee packs generally.

Sonoco GreenCan has been used for Kneipp’s limited-edition bath crystals. Separate the reported paper body, paper end and plug-in lid from unpublished finished-pack moisture and reclosure performance.

Ottogi’s 2026 sustainability report gives comparison figures and a 2024–25 rollout history for a ramen case. It does not disclose the strength metric or test conditions needed to transfer that claim to another box.

Masterpress has linked printing and pouch-making in-house. Its reported barrier and recycling assessments concern a paper-based material; the printed, formed pouch still needs its own evaluation.

A buyer’s checklist for separating visibility, printing and joining performance, finished-pack recyclability and application-specific food-contact evidence for transparent paper windows.

Nippon Paper has described a beverage-carton-to-carton prototype. Separate the announced recovery, pulping, paperboard, conversion and filling stages from unverified commercial scale and product-specific food-contact clearance.