45 Mic Clear BOPP Packing Tape

Foshan Opalus Adhesive Products Co., Ltd supplies packing tape 45 mic specifications for industrial carton sealing applications where thickness consistency and sealing reliability are important. The 45 um value refers to the finished tape thickness, including the BOPP film backing and adhesive coating. This specification is commonly evaluated by checking the complete tape structure, application performance, and batch consistency before regular supply.

Product Overview

For micron-based BOPP tape specifications, the thickness number does not describe the plastic film layer alone. A finished 45 um tape is produced by combining a BOPP film backing with an adhesive coating, and the final thickness is controlled through the balance between these two components. Typical constructions may include a BOPP film layer in the mid-20 um range, with the adhesive layer adjusted to achieve the required total thickness.

This structure is important because two tapes with the same nominal micron value can perform differently if the film gauge, adhesive coating weight, or coating consistency changes. When selecting 45 um BOPP packing tape, the complete construction provides a more reliable reference than thickness alone.

A 45 um tape is approximately 1.77 mil and should not be considered the same as a 2 mil packing tape. Confirming the finished tape thickness measurement method helps avoid differences between supplier quotations. Thickness alone does not establish adhesive or mechanical performance; use the BOPP packing tape technical specifications to compare peel adhesion, holding power, tensile strength, elongation and test conditions.

Thickness Selection: 40 um, 45 um and 50/51 um Grades

Among common BOPP carton sealing tape grades, 40 um, 45 um, and 50/51 um specifications are selected based on the balance between material usage, handling requirements, and packaging conditions. A 40 um grade is often considered when reducing material consumption and roll weight is important. A 45 um specification provides a practical balance, offering more support than lighter grades while maintaining reasonable material efficiency. For applications requiring additional stiffness or a higher performance margin, 50/51 um grades may be considered.

Carton structure, transportation conditions, and sealing methods usually determine whether a lighter or thicker grade is suitable. A thicker tape is not automatically required when the packaging environment does not create additional stress.

Benefits

• Balanced 45 um construction for light and medium carton sealing applications
• Controlled finished thickness for more consistent roll-to-roll performance
• BOPP film backing helps maintain dimensional stability during handling, unwinding, and carton sealing operations
• Practical balance between material consumption and sealing performance
• Suitable for regular packaging operations and export carton applications
• Available with customized roll sizes, lengths, and supply configurations

How Does 45 μm Total Thickness Affect Packing Tape Performance Compared With 40 μm and 50/51 μm Grades?

The difference between 40 um, 45 um, and 50/51 um packing tape grades is not only the micron number. It also affects material usage, tape stiffness, roll weight, and the level of support provided during carton sealing.

Compared with 40 um grades, 45 um tape generally offers a more balanced structure for everyday packaging requirements. It provides additional film support while avoiding the higher material consumption of thicker 50/51 um grades. For export cartons, warehouse storage, and general logistics handling, 45 um is often selected when both cost control and sealing stability are required.

Carton structure, transportation conditions, and sealing methods usually determine whether a lighter or thicker grade is suitable. A thicker tape is not automatically required when the packaging environment does not create additional stress.

TDS / Technical Data Sheet

Applications

• Light and medium corrugated carton sealing
• Export packaging preparation and shipment protection
• Warehouse carton closing and inventory handling
• Manufacturing packaging lines where consistent roll performance and smooth application are required
• Manual and general packaging operations

What Should Be Checked Before Approving 45 μm Clear BOPP Packing Tape for Bulk Production?

Before approving large-volume production, the 45 um specification should be reviewed from both a thickness and application perspective. Thickness measurement is commonly performed using a micrometer or thickness gauge, with checks taken from multiple points and different rolls to evaluate consistency.

In addition to thickness, production approval usually includes reviewing tensile strength, peel adhesion, and holding performance because these factors influence carton sealing reliability during storage and transportation.

A practical sample approval process involves applying the tape to the actual carton type and sealing method used in production. For repeat orders, retained samples, batch records, and approved specifications can be compared to monitor thickness consistency and sealing performance over time.

FAQ

1. Does 45 mic mean BOPP film thickness or total tape thickness?

45 mic normally refers to the finished tape total thickness, including the BOPP film backing and adhesive layer.

2. Is 45 um packing tape the same as 2 mil tape?

No. 45 um is approximately 1.77 mil and should not be treated as a 2 mil specification.

3. How should 40 um, 45 um, and 50/51 um packing tape be selected?

Selection should consider carton weight, transportation conditions, sealing method, and cost balance.

4. How can 45 um tape quality be verified before large orders?

Verification should include finished thickness measurement, tolerance confirmation, physical testing, sample application, and production batch comparison.