How to Choose the BOPP Tape in Good Quality?

How to buy BOPP sealing tape in good quality?

To answer this question, we should not rely solely on the thickness and weight marked by the seller while choosing the tape. Instead, we need to compare the tape from different suppliers based on several specifications.

In this article, we will make a comparison from various aspects to help you make an informed decision.

• The Film Thickness

The tape film thickness and the glue coating make up the single-layer thickness. Generally, a thicker glue coating of 24 to 25 microns results in better stickiness.

• The Tape Width

We need to measure the tape’s width directly with a ruler. Commonly, they are 40 mm, 42 mm, 43 mm, 44 mm, 45 mm, 48 mm, 50 mm, 55 mm, 60 mm, and 70 mm.

• The Tape Length

When packing and sealing boxes, it’s important to check the length of the tape being used. If a packing machine is being used, it can measure the length automatically. However, if the box is being sealed manually, it can be difficult to measure the length accurately. In such cases, the user can only estimate the length by judging the thickness of the stacked tape film rounding the roll. It should be kept in mind that the thickness of the stacked tape film may be affected by the winding tightness in the factory which can lead to positive-negative errors. These errors should be less than 1mm. If the error exceeds 1mm, the buyer should pay attention to the quality of the tape being used.

• Inner Paper Roll Holder

When comparing tape rolls, if their external diameter is equal, the larger the paper tube, the shorter the tape. However, the size of the paper tube holder may vary among different suppliers, so the length of the tape depends on the thickness of the outer stack.

• Weight

It is important to consider the weight of a single tape roll as a crucial specification when checking it. This is because the weight of a tape roll includes not only the weight of the tape, but also the weight of the inner craft tube. If the inner kraft tube holder is too big, the weight will increase. Some suppliers even use paper tubes containing heavy substances inside to increase the weight, which is why they prefer to sell the tape by weight. So, it is important to be aware of the weight of the tape roll when purchasing it.

• The Smell

Good quality Bopp tape should not emit any unpleasant chemical odor. Usually, tapes that have a bad smell tend to become brittle when used in low-temperature environments. This is because the glue coating on such tapes is poorly applied and of low quality. Although they may seem to work fine initially, they tend to break after some time.

• Glossiness

A low-quality tape is often dark and prone to breakage.

• Sense of Touch

When you tear off a piece of tape, you can feel its thickness and flexibility. A film that has poor flexibility is usually of poor quality. Poor flexibility means that the single layer of the tape is thicker, which makes the entire roll of tape shorter than required. On the other hand, good quality tape has a thin single-layer film that is flexible and ductile.

• Color

When you are looking to purchase transparent BOPP tape, it is important to pay attention to its transparency and color. Usually, the tape with better transparency has better sealing performance. The inner kraft paper holder in the tape, whose length is less than 100 meters, should be clearly visible. If you are buying tape of other colors, you need to observe whether there are any irregularly distributed white spots on the surface of the tape. If these white spots cannot be wiped off by hand, it indicates the presence of impurities in the glue or uneven application of the glue. If you notice any of these features in the tape you are considering purchasing, it is advisable to not buy it.