What is cold seal packaging?
Cold seal packaging is heat-free flexible packaging film that uses pressure-sensetive adhesive coated to the specific sealing area of the films, allowing the package being sealed without heat. So the cold seal packaging is ideal for high-speed wrapping process of heat-senentive products like energy bars, chocolate, ice cream and other confectionery.
What is the difference between cold seal and heat seal?
| Feature | Cold Seal | Heat Seal |
|---|---|---|
|
How It Works |
Pressure-activated adhesive sticks to itself. |
Heat and pressure fuse the packaging layers together. |
|
Process |
High speed production, no heat needed, safe for heat-sensetive products. |
Requires heat, so it can damage heat-sensitive products. |
|
Sealing Strength |
Cold sealing is weaker than heat sealing. |
Heat sealing is stronger than cold sealing. |
|
Application |
Ideal for high-speed lines for chocolate, energy bar, granola bars and ice cream
|
General goods like coffee, pet food and personal care items needing robust sealings. |
Benefits and feature of cold seal packaging
Feature of Cold-seal Packaging
- Airtight sealing for product freshness.
- Custom printing for marketing or branding.
- Fast wrapping speeds for high efficient production.
- Food grade material, FDA compliant for direct food contact.
- Low odor and no flavor impact on products.
- Limited product damage with heat-free sealing.
Benefits of Cold -seal Packaging
- Cold seal packaging caused less product damage than heat sealing, which is safe for heat-delicate items.
- Cold seal packging can be applied with higher production speeds. It doubles the line speed of traditional heat sealing and increases efficiency by 30%-50% compared to low-temperature sealing films.
- Due to the use of cold-sealing adhesive, the heat-sealing position is more precise.
Application of cold seal packaging
Cold seal packaging is widely used in heat-sensitive food products industries and markets. Common applications include:
- Chocolate
- Baked goods
- Energy bars, granola bars and protein bars
- Confectionery like candy
- Ice cream and frozen treats
- Specialty snacks
Materials of cold seal packaging films
Cold seal packaging typically uses laminated plastic films that ensure durability and freshness. The materials include:
- Polypropylene (PP): Offering high strength and clarity, ideal for food products.
- Paper Lamination: Suitable for eco-friendly and sustainable packaging.
- Foil Laminates: metalized and aluminum foil provide superior barrier protection against light and oxygen.
Common Material Structures:
- OPP/CPP + Cold Sealant
- Matt OPP/VMPET + Cold Sealant
- PET/Kraft/PE + Cold Sealant
- PET/VMPET/CPP + Cold Sealant
- PET/PE + Cold Sealant
The adhesive is applied carefully to ensure it only bonds to itself, preventing accidental sticking during storage or transportation.
QIYU PACK can help with your cold-seal packaging needs
At QIYU PACK, we offer end-to-end support for all your cold seal packaging needs. Whether you’re new to cold seal packaging or looking for a reliable flexible packaging supplier, we provide:
- Custom solutions: Assist with designing custom materials structures that meet your packaging and barrier requirements.
- Design Support: Assist with creating effective and visually appealing packaging designs.
- Hassle-free Technical Assistance: Guidance to streamline production and ensure flawless application.
- Dedicated Sales & Customer Service Support: 24/7 consistent communication and customer support throughout the process.
Contact us and tell us more about your product and packaging, and we can provide specific answers to your unique needs.
