End-of-Line Adhesives for Case Sealing & Cold Chain
Case sealing adhesive and hot-melt grades for corrugated shippers, tray forming, and palletizing on food and beverage lines—not the same program as high-speed e-commerce fulfillment sealers. Qualify fiber-tear hold from about -40°C cold storage through elevated shipping temps on your board and compression window.
*Complimentary 1 kg lab material · shipping prepaid by recipient. 25 kg hot-melt or 20 kg water-based trials after screening. MOQ typically ~1,000 kg.*
✅ FDA 175.105 (indirect) • Metallocene & EVA • Cold-chain qualification
Optimized For:
-40°C → +70°C
Service window on qualified cold-chain packs
Fiber-Tear
Corrugated seal targets on your board grade
mPO / EVA
Metallocene or economy EVA after line audit
End-of-Line Bond Stations
Case erectors, tray formers, and palletizing stations each need different open time, density, and thermal stability—specify the station when you request samples.
High-Speed Case Sealing
Metallocene or EVA hot melts for auto case sealers and tapers. Target fast green strength through your compression section—often ~0.5–2 s on qualified lines, not a universal spec.
Tray Forming
Rigid bonds for corrugated and solid-board produce trays. Clean nozzle cut-off to limit stringing on fruit and vegetable tray lines.
Anti-Slip Palletizing
Releasable palletizing adhesives to improve load stability and potentially reduce stretch-film use—validate slide angle on your pallet pattern.
Common Case-Sealing Failures
Freezer pop-opens, nozzle char, and over-application show up as logistics claims and unplanned maintenance—not just “weak glue.”
Common Failures
Pop-Opens in Freezer Storage
Standard hot melts can embrittle in blast-freezer or cold-chain storage when the grade was not qualified for low-temperature flex.
Nozzle Charring & Downtime
Thermal degradation in the tank creates char, stringing, and cleaning stops on case sealers.
High Glue Usage
Density and cut-off issues drive over-application when viscosity drifts or the wrong EVA grade is on a high-speed line.
Our Solution
Cold-Chain Grade Selection
Grades screened for flexibility and seal hold at about -40°C on qualified frozen-food programs—confirm on your board and freezer cycle.
Thermally Stable Metallocene
mPO options aimed at cleaner melt tanks and more stable viscosity versus older EVA on long production runs.
Application-Matched Density
Lower-density metallocene can reduce kg-per-case versus some EVA routes when mileage is measured on the same line.
Qualify on Your Case Sealer & Board
Share corrugated grade (virgin/recycled), compression length, cases per minute, and storage temperature. Path: 1 kg lab screen → 25 kg hot-melt or 20 kg WB trial → bulk MOQ (~1,000 kg).
Set-Time & Compression Match
Open and set times tuned to your compression section length and case-per-minute target—not a single chart for all sealers.
Substrate Versatility
Programs for recycled, coated, and virgin corrugated—each needs a separate peel and fiber-tear check.
Clean Application
Cut-off and viscosity bands for jet and bead applicators to limit tailing on high-speed equipment.
Typical Grade Windows (Validate on Your Line)
We match line speed, compression, and cold-chain exposure—ranges below are starting points for qualification.
| PARAMETER | CUSTOMIZATION RANGE | BENEFIT |
|---|---|---|
| Technology | Metallocene (mPO) / EVA hot melt / water-based | mPO for thermal stability and mileage on many sealers; EVA for economy; WB where equipment allows. |
| Service Temp Range | About -40°C to +70°C (qualified) | Cold-chain freezer hold through hot-truck or warm storage extremes—confirm on your pack. |
| Set Time | ~0.5–2.0 s (typical) | Fiber-tear targets on auto case sealers—speed depends on board and compression. |
| Viscosity | 800–3,500 cps | Low-stringing options for high-speed beads and jets. |
| Regulatory | FDA 21 CFR 175.105 (indirect) | Food and beverage logistics shippers where adhesive is not direct-contact. |
CUSTOMIZATION RANGE: Metallocene (mPO) / EVA hot melt / water-based
BENEFIT: mPO for thermal stability and mileage on many sealers; EVA for economy; WB where equipment allows.
CUSTOMIZATION RANGE: About -40°C to +70°C (qualified)
BENEFIT: Cold-chain freezer hold through hot-truck or warm storage extremes—confirm on your pack.
CUSTOMIZATION RANGE: ~0.5–2.0 s (typical)
BENEFIT: Fiber-tear targets on auto case sealers—speed depends on board and compression.
CUSTOMIZATION RANGE: 800–3,500 cps
BENEFIT: Low-stringing options for high-speed beads and jets.
CUSTOMIZATION RANGE: FDA 21 CFR 175.105 (indirect)
BENEFIT: Food and beverage logistics shippers where adhesive is not direct-contact.
Why Food & Beverage Logistics Teams Shortlist Senda
Cold-chain qualification, cleaner metallocene running, and audit paperwork—without mixing fulfillment DTC sealing into the same spec.
Cold-Chain Qualification
Cleaner Sealer Uptime
Audit-Ready Supply
Documentation for QA and Retail Audits
Indirect food-contact shippers typically reference FDA 21 CFR 175.105. TDS, SDS, and statements are available when you request an audit package below.
Compliance Scope (Confirm for Your Pack)
Repulpability and recycling claims depend on adhesive grade, paper stream, and customer rules—confirm in trial.
- FDA 175.105 ( Indirect food-contact case sealing )
- REACH & RoHS ( Documentation on request )
- Repulpable options ( Grades intended for fiber-recovery screening )
Batch-level TDS, SDS, and compliance statements for your nominated grade.
Related Packaging Lines
Case sealing is one station on the plant map—route folder-gluer and fulfillment programs separately so you do not spec carton emulsion or DTC metallocene on a cold-chain case taper.
Folding Carton Adhesives
Side seams and auto-bottoms on coated carton board (UV, metallized, pharma cartons)—folder-gluer open time and compression, not corrugated case-ercator hot melts.
View folding carton grades
Fulfillment Box Sealing (E-commerce)
Warehouse shipper sealers on high recycled-board mix—uptime, nozzle char, and cases-per-minute targets for DTC fulfillment, not blast-freezer logistics shippers.
View fulfillment sealing
We moved to Senda's metallocene on our frozen-food case sealer after pop-opens in the blast freezer. Adhesive mileage improved versus our prior EVA, and nozzle cleanouts are less frequent on the same line speed.
Technical Proof (Optional Reading)
Share with engineering after you request samples. Primary path: lab screen + machine trial via the buttons above.
CASE STUDY Case Study: Frozen Food Case Sealing at -40°C
How a cold-chain distributor addressed freezer pop-opens and validated seal hold on automated corrugated case sealers.
Read the Full Story →
TECHNICAL GUIDE Guide: EVA vs Metallocene for Case Sealing
Thermal stability, char, angel hair, and when metallocene may beat economy EVA on corrugated case sealers.
Read Full Article →Frequently Asked Questions
Find answers to common questions about our adhesive solutions and services.
What are MOQ, lead time, and sample options?
MOQ is typically ~1,000 kg. Production lead time is often 7–10 business days for qualified grades. Complimentary 1 kg lab material (recipient prepaid shipping), plus 25 kg hot-melt trial bags or 20 kg water-based pails for machine validation.
How do I reduce nozzle charring on a case sealer?
Char often comes from thermally stressed EVA. A metallocene (mPO) grade with stable tank viscosity is a common next step—still requires trial on your sealer and board.
Do you have adhesives for deep-freeze logistics?
Yes—grades are qualified for about -40°C storage on frozen-food programs. Run a cold-cycle peel and shipper hold test; see our frozen food case study for the qualification path.
How is this different from e-commerce box sealing?
This page focuses on food & beverage logistics case sealers and cold chain. High-speed fulfillment shippers live under e-commerce box sealing—different uptime, board, and audit questions.
Can metallocene reduce adhesive consumption, and what coat weight should we test first?
Lower density can mean more volume per kg versus some EVA grades. Mileage must be measured on your line—do not assume a fixed percentage savings without a trial.
Are your end-of-line hot melts repulpable?
Selected grades are intended to stay solid and screen out in repulping. Results depend on your mill equipment—run an internal repulp test on the nominated grade.
How do we evaluate FDA suitability for the selected adhesive, package structure, and application?
We supply FDA 21 CFR 175.105 grades for indirect food-contact shippers. Direct-contact formats need a different regulatory path—see food contact adhesives.
What shelf life and storage conditions should we plan for the approved grade?
Hot melts: typically 24 months below about 35°C. Water-based grades: often 6–12 months and must be protected from freezing.
