3 numeri che definiscono la carta antiaderente ad alte prestazioni
Creato il 08.26
While many factors contribute to the quality of greaseproof paper, three numbers are particularly critical for defining its high-performance characteristics. These numbers are measurable, scientific, and tell you exactly what to expect from the product.
The 3 numbers that define high-performance greaseproof paper are:
1. 套件评分 ≥ 12
2. Gurley Hill Porosity > 1000秒
3. Basis Weight (GSM) 35 - 50
Here’s a detailed breakdown of what each number means and why it's so important.
1. 套件评级（耐油性）
- The Number: ≥ 12 (Often 12, but high-performance papers can be 15+)
- What It Measures: 这是测试纸张抵抗油脂和油的决定性测试。它测量在标准化条件下，油脂渗透并在另一侧显示可见污渍所需的时间。
- How It Works: 该测试使用一系列编号为1到12的蓖麻油和甲苯溶液（每个“套件”是特定的混合物）。套件12溶液是100%纯蓖麻油——最难以阻挡的物质。套件评级为12意味着纸张在整个测试期间（通常为15分钟）承受了100%蓖麻油，没有渗透或污渍。较低的评级（例如，套件5）意味着它只能抵抗更弱、更稀释的溶液。
- 为什么它定义了性能：这是论文的主要任务。高的套件评级（12或以上）保证它能够有效阻挡脂肪、油和油脂，即使是像炸鸡、培根、比萨饼和糕点这样油腻的食物，防止泄漏、潮湿的包装和污渍表面。
2. Gurley Hill Porosity (Air Resistance)
- The Number: > 1000秒 (越高越好。一些特种纸的时间超过10,000秒)。
- What It Measures: 此测试测量纸张纤维结构的密度和紧密度。它记录在特定压力下，100毫升空气通过纸张单平方英寸所需的时间（以秒为单位）。
- How It Works: A sample is placed in a Gurley Densometer. A cylinder of air is released, and a timer measures how long it takes to pass through the paper. A very low number (e.g., 10 seconds) indicates a porous, breathable paper like a coffee filter. A very high number (e.g., 1200 seconds) indicates an extremely dense, non-porous sheet—the hallmark of true greaseproof paper.
- 为什么它定义了性能：孔隙率与抗油脂性直接相关。油脂和油无法渗透空气不易通过的结构。高Gurley值意味着纤维高度精炼并紧密堆积，形成一个物理屏障，没有油脂迁移的简单通道。它还在纸张湿润时增强了纸张的强度。
3. 基重 (克重)
- The Number: 35 - 50 克每平方米 (GSM)
- What It Measures: This is the weight (in grams) of one square meter of the paper. It’s a direct indicator of the paper's thickness, substance, and durability.
- 如何运作：这是一种对面积上重量的简单测量。虽然这不是对厚度的直接测量（那将是卡尺或微米），但更高的GSM通常与更重、更坚固的纸张相关。
- Why It Defines Performance:
- Too Low (<35 GSM): The paper feels flimsy, is more likely to tear during handling, and may not have enough fiber mass to provide a reliable grease barrier, even with a good Kit rating.
- 理想范围（35-50 GSM）：这是高性能食品服务纸的最佳选择。它提供出色的强度和抗撕裂性，同时又不会过于厚重或僵硬。手感扎实，能够承受热油腻食物的重量而不失效。
- Too High (>60 GSM): The paper becomes more like a board, losing the flexibility needed for wrapping and increasing material costs unnecessarily.
Putting It All Together: What to Look For
When evaluating a high-performance greaseproof paper for professional use (e.g., a bakery, food truck, or restaurant), you should look for a product that specifies:
"This paper has a Kit Rating of 12, a Gurley Hill porosity of over 1000 seconds, and a basis weight of 40 GSM."
这三个数字共同提供了论文性能的完整技术图景，远比“超强”或“超级防油”等营销术语更可靠。它们告诉您，它将对油脂具有高度抵抗力，由致密的纤维结构制成，并具有可靠执行其工作的物理强度。
Ray
Ferrill
Evelyn