When the weather gets cold, we need a bag that can keep things warm. Insulated bags are indispensable, so what materials are there for insulated bags? Do different materials have the same insulation effect? This article will show you the different materials of insulation bags.
1. Aluminum foil material
Aluminum foil has very good insulation and can usually effectively block heat loss. Aluminum foil has strong reflectivity and can reflect the heat in the bag back to keep the temperature of the items.
Features: Lightweight, waterproof, moisture-proof, suitable for items with high temperatures or long-term insulation.
Application: Commonly used in food takeout, express delivery and other fields.
2. EPE (foamed polyethylene)
Insulation effect: Good, EPE material has strong thermal insulation properties and can effectively slow down heat loss.
Features: Lightweight, soft, environmentally friendly, with a certain shockproof effect, often used to protect more fragile items.
Application: Widely used in cold chain transportation, food insulation, etc.
3. Foam board (XPE, IXPE)
Thermal insulation effect: Excellent, the sealing and thermal insulation of foam materials are very good, and can effectively keep warm or cold.
Features: The material is light and elastic, usually waterproof, moisture-proof and pressure-resistant, suitable for occasions that require strong protection.
Application: Mostly used in large insulation bags or insulation boxes, suitable for long-term transportation or storage.
4. Polyester fiber (Polyester)
Thermal insulation effect: Generally, the thermal insulation of polyester fiber itself is poor, but its lining can be added with insulation materials to enhance the thermal insulation effect.
Features: Durable, easy to clean, moderately priced, usually used as the outer material of insulation bags.
Application: Mostly used in daily food insulation bags, travel bags, etc.
5. Cotton or polyester cotton
Thermal insulation effect: Generally, the thermal insulation performance of cotton material is better, but it is greatly affected by the external environment and easily loses the thermal insulation effect.
Features: Comfortable, breathable, natural material, usually used as the middle layer to enhance the thermal insulation effect.
Application: Used for daily lightweight insulation bags, such as lunch bags or simple insulation bags.
6. Oxford cloth
Insulation effect: Generally, Oxford cloth itself does not have a strong insulation function, but its surface coating is waterproof and moisture-proof.
Features: Wear-resistant, dirt-resistant, and highly waterproof, suitable for making external packaging or outer protective layers.
Application: Commonly used as the outer layer of insulation bags for outdoor travel, picnics, etc.
7. Non-woven fabric
Insulation effect: Generally, it is usually used as the outer layer material of insulation bags and used together with other insulation layers.
Features: Light, breathable, and environmentally friendly, but the insulation effect is not strong when used alone.
Application: Used for low-end insulation needs such as food packaging bags and promotional items.
8. Kraft paper/waterproof paper
Insulation effect: Generally, it is usually used in combination with insulation materials, mainly used for lightweight insulation bags.
Features: Natural and environmentally friendly, with good texture and appearance, suitable for occasions requiring fashionable or environmentally friendly packaging.
Application: Mainly used for food takeaway packaging bags.
