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HomeHot-Fill Dosing & Film Specs

Hydrocolloid Hot-Fill Dosing, Seal-Through Laminates & Cup Lid Specs

Engineering guide to carrageenan/konjac gelling windows, SUS316L anti-splash nozzles, PET/NY/CPP pasteurizable stick films, and easy-peel cup lidding.

AUTHORITY

Focus: jelly packaging film and hot fill specs

Check Compatibility

Mastering Hot-Tack, Acid Hydrolysis, and Splash-Free Sealing

Across jelly packing machines, three physical phenomena cause 90% of leakers: (1) low-viscosity 80 °C jelly syrup splashing onto cup rims or stick cross-seal zones during fast indexing; (2) trapped hot air expanding inside sticks/cups during 85 °C water-bath pasteurization and blowing open weak low-hot-tack PE seals; and (3) holding acidic fruit jelly (pH 3.5–4.0) too long at >85 °C, which hydrolyzes carrageenan chains so finished cups weep liquid (‘syneresis’).

Solving all three requires pairing rapid-turnover heated buffer hoppers with nylon/CPP or metallocene-LLDPE pasteurizable laminates and two-stage pressure-cooled jaws.

Matrix matching konjac sticks, fruit jelly cups, freezer pops, and drinking-jelly spout pouches to machine hardware
Hydrocolloid gelling temperature, solid fruit inclusions, and post-pack pasteurization lock dosing and laminate specs.

Jelly Packaging Film & Cup Barrier Specification Matrix

Recommended material structures for 6–12 month ambient shelf-stable jelly products:

Format Component Standard Commercial Structure Total Thickness Key Functional Property
Konjac / Collagen Stick Film PET12 / NY15 / RCPP50–60 (or AL7) 77 – 95 μm Puncture toughness + 95 °C pasteurization hot-tack
Freezer Pop / Ice Tube Film NY15 / LLDPE65–80 freeze-grade 80 – 95 μm -25 °C flex crack resistance + rounded die-cut
Shelf-Stable Jelly Cup Body PP / EVOH / PP co-extruded barrier 450 – 850 μm sheet Blocks O2 browning of white peach / lychee fruit
Easy-Peel Cup Lidding Film PET12 / NY15 / Easy-Peel CPP45 70 – 80 μm Withstands 85 °C bath yet peels cleanly at 6–12 N

Match your cup diameter or stick width in our jelly cup & stick film width chart.

Station sequence on dual-dosing rotary and linear jelly cup filling and two-stage lid sealing machines
Two-stage heat sealing plus precision rim die-cutting prevents leaking cups during 85 °C pasteurization while peeling smoothly for kids.

Hot-Fill Jelly Engineering Notes

  • Why Nylon (BOPA) Layer Matters on Jelly Sticks: Kids squeeze and bite konjac sticks forcefully—incorporating a 15 μm bi-axially oriented nylon middle layer prevents longitudinal splits while laser-scoring cleanly at the mouth notch.
  • Acid Addition Right Before Filling (Inline Dosing): To stop citric/malic acid from cleaving carrageenan chains during batch holding, meter fruit acid into a small heated inline mixing pot just minutes upstream of the filler!
  • Suck-Back + Deflation Sponges on Stick Packs: Soft silicone/sponge air-squeezing pads press excess headspace air out of jelly sticks milliseconds before cross-jaw closure so sticks survive pasteurization without ballooning.

Qualify Your Laminate & Hydrocolloid Recipe

Explore format-specific guides in jelly product setups and sizing math in jelly machine sizing and selection.

Send your stick/cup artwork dielines via Project Brief.

Six-stage hot-fill hydrocolloid jelly cooking, packing, pasteurizing, cooling, and multipack line
Keeping carrageenan, konjac, and agar solutions at 75–85 °C inside jacketed hoppers prevents premature setting inside piston manifolds.

Explore related equipment in Jelly Packing Machines, Hot-Fill Dosing & Film Specs, or send your stick/cup dimensions via Project Brief.

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