3 Mil Clear BOPP Packing Tape
- Total Thickness: 3.0 mil grade, approximately 76 um
- Backing Material: Clear BOPP film with pressure-sensitive adhesive coating
- Standard Widths: 48mm, 72mm and customized sizes
- Roll Length Options: 55 yd, 110 yd and machine roll formats
- Core Size: Standard 3 inch core for hand or equipment application
- Application: Carton sealing, shipping cartons and industrial packaging
3 mil packing tape is a clear BOPP carton sealing tape produced by Foshan Opalus Adhesive Products Co., Ltd for applications where finished tape gauge is an important specification. The tape combines a clear BOPP backing with a pressure-sensitive adhesive coating, with a finished thickness of approximately 3.0 mil / 76 um depending on film construction, adhesive coating weight, and production tolerance.
Product Overview
3 Mil Clear BOPP Packing Tape is specified when a finished tape thickness of approximately 3.0 mil is required for carton sealing applications. The gauge represents the complete tape structure, including the clear BOPP backing film and adhesive coating layer, rather than the backing film alone.
Industrial constructions may use around 50 um BOPP film references with an adjusted adhesive layer to achieve the required finished gauge. Final sealing performance is influenced by film strength, adhesive coating weight, carton surface condition, application pressure, and storage environment.
Selecting the Right Thickness Grade
The choice between 2.0 mil, 2.6 mil, and 3.0 mil grades usually starts with the carton structure and shipping environment. Lightweight cartons may use lower gauge constructions, while 3.0 mil is often selected when a higher finished thickness is preferred for larger cartons, longer transportation cycles, or repeated handling.
Benefits
- Finished 3.0 mil gauge allows specification-based selection for carton sealing requirements.
- Clear BOPP backing provides a consistent film structure for transparent carton closure applications.
- Balanced tensile strength, elongation, and adhesion help maintain sealing performance under suitable conditions.
- Available in common widths, roll lengths, and core formats for different sealing methods.
- Production specifications can be confirmed through samples, technical data review, and repeat-order comparison.
How Does 3 Mil Thickness Affect Clear BOPP Packing Tape Performance?
The performance of 3 mil packaging tape is influenced by the relationship between thickness, film strength, adhesive coating, and application conditions. Industry reference data for 3.0 mil carton sealing tape commonly shows tensile strength around 33-42 lbs/in, elongation around 120-150%, and adhesion values around 58-60 oz/in depending on construction and test method.
Tensile strength relates to resistance during carton handling, elongation shows how the tape absorbs stress before failure, and adhesion affects contact stability with the carton surface. These values should be reviewed together with actual carton trials instead of relying on thickness alone.
TDS / Technical Data Sheet
| Item | Typical Value |
|---|---|
| Product Structure | Clear BOPP backing + pressure-sensitive adhesive coating |
| Total Thickness | Approximately 3.0 mil / 76 um |
| BOPP Film Thickness | Around 50 um, grade dependent |
| Adhesive Coating Thickness | Around 1.0 mil, grade dependent |
| Color | Clear |
| Width Options | 48mm, 72mm, customized widths |
| Roll Length Options | 55 yd, 110 yd, machine roll formats |
| Core Size | 3 inch core standard |
| Tensile Strength | Around 33-42 lbs/in, grade dependent |
| Elongation at Break | Around 120-150%, grade dependent |
| Peel Adhesion | Around 58-60 oz/in, grade dependent |
| Application Temperature | Confirm according to adhesive system and carton conditions |
| Service Temperature | Confirm according to final application requirements |
Applications
- Single-wall corrugated cartons requiring stable closure during shipping.
- Double-wall corrugated cartons where higher sealing stability is required.
- Export cartons exposed to longer transportation cycles and repeated handling.
- Manufacturing and warehouse packaging operations.
- Hand sealing and compatible packaging equipment applications.
Specification Options for 3 Mil Clear BOPP Packing Tape
For repeat supply, specifications such as finished thickness tolerance, slit width, roll length, winding condition, and core size should be confirmed before production. Sample rolls can be tested on actual cartons to check adhesion, edge holding, application behavior, and sealing consistency. During production, factors such as slit edge cleanliness, roll flatness, winding consistency, and finished roll appearance are checked to support stable dispensing and repeat-order consistency.
When Should 3 Mil Clear BOPP Packing Tape Be Selected Instead of 2.0 Mil or 2.6 Mil Grades?
The selection between thickness grades should consider carton weight, board structure, transportation conditions, and sealing method. A 3 mil packing tape specification is generally selected when a higher finished gauge is required for more stable carton sealing performance.
Technical values such as tensile strength, elongation, and adhesion should be reviewed together with sample testing before approving regular supply.
FAQ
1. Is 3 mil packing tape the same as 76 um thickness?
3 mil packing tape is approximately equal to 76 um in finished thickness. Actual values may vary according to BOPP film thickness, adhesive coating, and production tolerance.
2. How is 3.0 mil total thickness calculated?
The total thickness combines the BOPP backing film and adhesive coating layer. Actual thickness may vary according to film gauge, adhesive weight, and production tolerance.
3. Can 3 Mil Clear BOPP Packing Tape be used with automatic sealing equipment?
Yes. Roll dimensions, core size, and length should be confirmed according to the specific packaging equipment and application requirements.
4. Which specifications should be confirmed before repeat production?
Thickness tolerance, width, roll length, core size, carton type, application method, and approved sample conditions should be confirmed before repeat orders.