Glassine paper is a smooth, translucent paper known for its resistance to air, water, and grease, making it ideal for preserving and protecting artwork, photographs, and food items.
| Product Code | Wuzhou Glassine |
|---|---|
| Material | Virgin pulp |
| Weight | 55-60gsm |
| Packing | Roll pack/bulk pack/ream pack |
| Usage | food packaging, stamp collecting, art and craft, pharmaceuticals, seed packets, bookbinding, wrapping paper, and envelopes. |
| Property | Unit | Data | Standard | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 55 | 56 | 57 | 58 | 59 | 60 | ||||
| Weight | g/m2 | 54-56.5 | 55-57.5 | 56-59 | 57-60 | 58-61 | 59-62 | G8/T 451 | |
| Moisture | % | 5.5-7.5 | GB/T 462 | ||||||
| Caliper | Min. | mm | 0.046 | 0.048 | 0.049 | 0.05 | 0.05 | 0.051 | G8/T 451 |
| Max. | 0.05 | 0.052 | 0.053 | 0.054 | 0.054 | 0.055 | |||
| Density | g/cma | ≥1 | |||||||
| Smoothness | Coating side | S | ≥1200 | G8/T 456 | |||||
| Roughness | Coating side | um | ≤1.8 | G8/T2679 | |||||
| cobb 60 | Coating side | g/m2 | ≤22 | G8/T 1540 | |||||
| Back side | ≤28 | ||||||||
| Air Permeability | ml/min | ≤1.2 | G8/T 458 | ||||||
| Oi Absorption | Coating side | g/m2 | ≤1.2 | GB/T 29282 | |||||
| Tensile Strength | MD | kN/m | ≥5.3 | ≥5.5 | ≥5.7 | G8/T 453 | |||
| Tear Strenqth | CD | mN | 2260 | GB/T 455 | |||||
| Hot-Shrinkage | CD | % | ≤1.2 | 135℃10min | |||||
| Transparency | % | ≥40 | G8/T 2679 | ||||||
| Glossiness 75° | % | ≥45 | G8/T 8941 | ||||||
| Whiteness | % | ≥79 | G8/T 7974 | ||||||
| Dirt | 0.1-0.2mm2 | unit/m2 | ≤20 | G8/T 1541 | |||||
| 0.2-1.0mm2 | ≤10 | ||||||||
| >1mm2 | ≤O | ||||||||
Glassine paper is a smooth, glossy paper that is air, water, and grease resistant. It is made through a process called supercalendering, where paper is pressed between rollers to make it very thin and dense, giving it a high degree of translucency. This process also imparts the paper with its characteristic smooth surface.
Glassine is widely used in various applications due to its protective qualities. Some common uses include:
1. Envelopes and Packaging: Glassine envelopes are popular for storing stamps, seeds, and other small items. Its water-resistant nature makes it suitable for protecting contents from moisture.
2. Archival Storage: Because glassine is pH neutral (acid-free), it is often used for storing old documents, photographs, and artworks to protect them from environmental damage.
3. Baking: Glassine paper is used as a disposable non-stick surface for baked goods due to its grease resistance.
4. Wrapping: It’s used to wrap food items like sandwiches and pastries as well as gifts and flowers because it provides a protective yet attractive presentation.
5. Photography: Historically, glassine was used in the packaging of photographic plates and films.
6. Stamps and Collectibles: Collectors use glassine envelopes to store stamps and other paper collectibles because the material’s transparency allows for easy viewing without having to remove the item.
Despite its many uses, there has been growing concern about the environmental impact of glassine paper, especially when it comes to disposability and recycling. While glassine is technically recyclable since it’s made from wood pulp, the recycling process can be complicated by coatings or additives that may be applied for specific applications.
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