名稱：3M4991
規格:610mm*16.5m
厚度:2.3mm
基材:閉孔丙烯酸泡綿
顏色:灰黑色
4991是VHB系列中比較厚的雙面膠帶，VHB超強粘性雙面膠帶的全丙烯酸結構，不僅可密封隔絕潮氣及多數溶劑，更可長期抗紫外線及冷熱循環。獨特的泡棉可做為極佳的緩沖材料，VHB高貼服性膠帶還具有服貼性高，優異的填縫效果。獨特的背膠亦適用于不同表面及低溫施工使用。
例如:粘合窗框條，將聚碳酸酯鏡頭粘合和密封到LCD上，卡車組裝中粘合預涂漆金屬，將塑料窗戶粘結和密封到預涂漆控制面板/開關裝置上，裝配乙烯管道和導管等。
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Adhesive Type
Multi-Purpose Acrylic Adhesive
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Applications
Exterior Metal Skin Bonding
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Brand
VHB?
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Color
Gray
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Foam Conformability
Conformable
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Industries
General Industrial
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Length
36 Linear Yard
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Length (Metric)
32.9 m
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Maximum Operating Temperature (Fahrenheit)
200 Degree Fahrenheit
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Primary Liner
Polyethylene (PE) Film
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Product Form
Roll
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Substrates
High Surface Energy, (400-1100 Dynes/cm), Medium Surface Energy, (38-39 Dynes/cm), Medium-High Surface Energy, (42-50 Dynes/cm)
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Tape Thickness
0.090 in (2.3mm)
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Temperature Resistance - Initial
250 Degree Fahrenheit
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Width
0.5 Inch, 1 Inch
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Width (Metric)
12.7 mm, 25.4 mm