Cold-Chain Food-Grade Adhesive Label Solution for a Food Brand's New Product Series
Client Requirements
Client Background and Application Scenario
A food company was launching an entire series of chilled food products.
The series covers three categories: low-temperature dairy, ready-to-eat salads, and fresh semi-prepared foods.
Each category has its own requirements for packaging labels, yet all must meet cold-chain compliance and legibility.
The products need to be stored long-term in a 2-8°C chilled environment.
Client Requirements and Issues with the Original Solution
The original solution had three core problems.
First, the original labels lifted and bubbled in the chilled environment, affecting barcode scanning speed.
Second, label specifications across categories were sourced piecemeal, with inconsistent visuals across the series.
Third, food-safety compliance information was crowded on the old labels, making it hard for consumers to read.
Core requirements: stable adhesion under low temperatures, food-safety compliance, unified series visuals.
Project challenges:
✓ Three categories have different label specifications
✓ Labels must remain firmly adhered in cold-chain environments
✓ 8 SKUs need a unified visual style
Solution
Solution Overview
Provided the client with a chilled food-grade adhesive label solution covering 3 categories and 8 SKUs.
The face material uses 80μ white synthetic paper with a food-grade adhesive.
Printing uses digital printing with variable data output.
Lamination uses 25μ matte film.
Material Selection Analysis
Why 80μ white synthetic paper?
Synthetic paper face material does not become brittle in low-temperature environments.
It tolerates well the moisture and temperature cycles of chilled environments.
Why not standard coated paper?
Coated paper curls and lifts easily in low-temperature, high-humidity conditions.
This affects barcode readability and the flatness of the label surface.
Why not PET face material?
PET would be over-spec for chilled applications.
Chilled environments typically run at 2-8°C, where synthetic paper performs stably.
Why digital printing?
Of the 8 SKUs, 5 have first-batch quantities under 500 rolls.
Digital printing has zero plate-making cost and fast revision, ideal for flexible small-batch multi-SKU production.
Why not traditional offset printing?
Traditional offset is suited to large-batch same-spec orders. For this multi-SKU, small-batch project, digital printing is more economical.
Production Implementation and Quality Control
① Unified layout specifications across the 8 SKU artwork files
② Compliance documents verified for food-grade ink and adhesive
③ Digital printing of each SKU label body
④ 25μ matte film lamination
⑤ Die-cutting forming (including waste stripping)
⑥ Sampling inspection (size, print color difference, conformability)
⑦ Chilled-environment adhesion simulation test (24 hours)
⑧ Roll-packed and shipped by SKU
Results
Project Results
Delivery Data
✓ Products delivered: 8 SKUs of chilled food-grade adhesive labels
✓ Face material specification: 80μ white synthetic paper
✓ Adhesive: food-grade acrylic series (GB 4806.7 compliant)
✓ Printing process: digital printing with variable data output
✓ Lamination: 25μ matte film
✓ Quantity delivered: 8 SKUs, total 12,000 rolls
✓ Lead time: 7 working days
Usage Performance
✓ 30-day chilled-storage sampling test: labels adhered flat with no lifting
✓ Barcode first-read rate 99.6% (measured in cold-chain)
✓ Series visual consistency meets brand specifications
Case Summary
For multi-SKU food series requiring chilled storage,
80μ synthetic paper with food-grade acrylic-series adhesive is generally more stable than standard coated paper
. This case delivered 8 SKUs, 12,000 rolls of chilled food-grade labels in total, for a food company.
Multi-SKU synchronized proofing and production at the zero plate-making cost of digital printing.
LeXiang Packaging Experience
Applicable scenarios: cold-chain foods, ready-to-eat foods, fresh semi-prepared products.
Pre-packaged foods that need long-term storage in 2-8°C chilled environments.
Food brands with many SKUs that require flexible small-batch production.
Material recommendations: standard chilled food labels — 80μ synthetic paper with food-grade acrylic-series adhesive.
For frozen foods (below -18°C) — recommend 100μ synthetic paper with rubber-based low-temperature adhesive.
Non-applicable scenarios: labels in direct contact with the food surface (a different compliance regime).
Products that need microwave heating after freezing (labels must be heat-resistant).
Notes: food-grade adhesive must be accompanied by a third-party test report.
Chilled-environment labels require actual cold-chain adhesion testing — do not substitute room-temperature testing.
Barcode readability drops in condensation environments; allow redundancy space.
Why Choose LeXiang Packaging
✓ Food-grade adhesive supplied with GB 4806.7 third-party test report (per batch, with shipment)
✓ 8 SKUs synchronized proofing, zero plate-making cost under digital printing
✓ 30-day chilled-storage sampling test: labels adhered flat with no lifting (measured)
✓ Bulk delivery completed in 7 working days; fastest rush in 3 days
Why Choose LeXiang Packaging
✓ Food-grade adhesive supplied with GB 4806.7 third-party test report (per batch, with shipment)
✓ 8 SKUs synchronized proofing, zero plate-making cost under digital printing
✓ 30-day chilled-storage sampling test: labels adhered flat with no lifting (measured)
✓ Bulk delivery completed in 7 working days; fastest rush in 3 days
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Project Metrics
Project Overview
Industry: Food & FMCG (chilled food)
Product: Chilled food-grade adhesive label series
Quantity: 8 SKUs, total 12,000 rolls
Material: 80μ white synthetic paper with food-grade adhesive
Process: Digital printing, variable data output, 25μ matte film lamination, die-cutting
Lead time: 7 working days (after artwork confirmation)
Compliance: GB 4806.7 food-contact materials
FAQ
What material and ink requirements do food labels have?
Typically ink must meet food-contact standards. The common reference is GB 4806.7. Specific required test reports should be confirmed by the client's regulatory team.
What if labels wrinkle easily in cold-chain environments?
A combination of high-tack acrylic adhesive and 25μ matte film is recommended. The adhesive maintains stable tack at low temperatures. Lamination film flexibility should match the paper substrate.
What is the minimum order quantity for food labels?
At the digital sampling stage, several dozen sets are sufficient. Batch production starts at 500-1,000 sets, depending on material and process.
Can multi-SKU food labels be sampled together?
Yes. Different SKUs can be merged into a single print run for unified sampling. Zero plate-making fees make this friendly for small batches.
What is the typical lead time for food labels?
3-5 working days at the sampling stage. 5-7 working days for batch production. Actual timelines depend on SKU count and process complexity.
Glossy or matte lamination for food labels?
Glossy lamination is commonly used for food labels. Glossy film provides better moisture protection and a brighter look. Matte film offers a softer texture.
How is label adhesion tested for food labels?
Typically by applying the label under simulated cold-chain conditions and letting it sit for 24 hours. The test temperature should match the actual usage temperature.
What compliance documents are needed for food labels?
Usually a food-contact test report for the ink. Indirect food-contact certification for the adhesive. The specific document list should be confirmed by the client's regulatory team.
Can variable-data printing be used for food labels?
Yes. Food-grade inks also support digital printing and variable data. This is common for production date and batch number marking.
How is easy revision ensured for food labels?
Under digital printing, revisions incur zero plate-making fees. Provide a new file and production can start directly, ensuring quick response.
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