塑钢带（PET打包带）是工业包装中最常用的捆扎材料之一，但很多采购人员在选型时存在误区——认为越厚越好、越宽越安全。实际上，选错规格不仅会增加成本，还会导致断带、崩货等安全事故。
PET strapping is one of the most widely used industrial strapping materials, but many buyers mistakenly think "thicker is better" or "wider is safer." In reality, choosing the wrong spec not only raises costs but can cause snapped bands and dangerous cargo incidents.
本文将从三个维度帮你系统地选对塑钢带：宽度、厚度、拉力强度。
This guide covers three key dimensions to help you select the right PET strapping: Width, Thickness, and Tensile Strength.
一、塑钢带宽度怎么选？
Part 1: How to Choose the Right Width
宽度是塑钢带最直观的参数，常见规格为 9mm、12mm、16mm、19mm、32mm，不同宽度对应不同的用途：
Width is the most visible parameter. Common sizes are 9mm, 12mm, 16mm, 19mm, and 32mm, each suited to different applications:
| 宽度 Width | 适用货物重量 Cargo Weight | 典型应用场景 Typical Application |
|---|---|---|
| 9mm | < 100kg | 纸箱、轻型包装 Cartons, light packaging |
| 12mm | 100–300kg | 托盘、木箱、砖块 Pallets, wooden crates, bricks |
| 16mm | 300–800kg | 钢材、木材、重型托盘 Steel, lumber, heavy pallets |
| 19mm | 800–1500kg | 卷钢、石材、大型设备 Steel coils, stone, large equipment |
| 32mm | > 1500kg | 超重货物、特种工业用途 Super-heavy cargo, industrial use |
Selection rule: When in doubt, go one size wider. Insufficient width is far more dangerous than insufficient thickness.
二、厚度如何影响强度？
Part 2: How Does Thickness Affect Strength?
常见厚度规格从 0.6mm 到 1.3mm，厚度直接决定断裂伸长率和拉伸强度：
Common thickness ranges from 0.6mm to 1.3mm. Thickness directly determines elongation at break and tensile strength:
- 0.6mm–0.8mm：轻型打包，手工打包机常用规格 / Light-duty strapping, common for hand-operated tools
- 0.9mm–1.0mm：中型货物，半自动/全自动打包机 / Medium cargo, semi or fully automatic machines
- 1.1mm–1.3mm：重型工业用途，机器打包专用 / Heavy industrial use, machine strapping only
厚度和宽度要匹配。12mm宽 × 1.3mm厚的带子，远比 16mm宽 × 0.6mm厚的带子更容易断裂。
Thickness and width must be matched. A 12mm × 1.3mm band is far more likely to break than a 16mm × 0.6mm band.
三、拉力强度是关键指标
Part 3: Tensile Strength Is the Key Indicator
国标中，塑钢带的拉伸强度通常以"kN"或"kg"表示，选购时重点看 断裂拉伸力。建议选择的拉力强度 ≥ 货物重量的 2倍（安全系数）。
In Chinese standards, tensile strength is expressed in kN or kg. Focus on the break tensile force. We recommend choosing a band with tensile strength ≥ 2× the cargo weight (safety factor).
示例 Example：
货物重量 500kg → 需要断裂拉伸力 ≥ 1000kg 的塑钢带。
Cargo weight 500kg → You need strapping with break tensile force ≥ 1000kg.
推荐选 16mm × 1.0mm，断裂力约 1100–1300kg，刚好满足。
We recommend 16mm × 1.0mm, with break force ~1100–1300kg — just right.
四、其他注意事项
Part 4: Other Important Notes
- 颜色 Color：黑色PET带通常含再生料，白色/透明色多为原料，强度更稳定 / Black PET bands typically contain recycled material; white/clear are usually virgin resin with more consistent strength
- 打包机匹配 Machine Compatibility：买带子前确认打包机的适用带宽范围 / Confirm your strapping machine's compatible band width range before purchasing
- 存储 Storage：避免阳光直射，塑钢带紫外线老化后强度会下降 / Avoid direct sunlight — UV exposure degrades strength over time
- 温度 Temperature：高温环境（>60℃）建议改用钢带 / In high-temperature environments (>60°C), switch to steel strapping
Not sure which to choose? Just tell us the weight per unit, dimensions, and number of strapping passes — our technical team will recommend the right spec for free.