What are the production standards for Bopp tape

BOPP (Biaxially Oriented Polypropylene) tape is commonly used for packaging, sealing, and labeling. The production standards for BOPP tape are designed to ensure the tape meets specific quality and performance criteria. These standards may vary by country or organization, but the most widely accepted standards are as follows:

1. Material Specifications:

Base Film: The tape is made from BOPP film, which is a type of polypropylene that is stretched in two directions to increase its strength and flexibility.

Adhesive: The adhesive is typically acrylic-based, rubber-based, or hot melt. The choice depends on the intended application, such as whether it’s for general purpose or heavy-duty use.

2. Thickness:

The thickness of the BOPP film generally ranges from 0.025 mm to 0.05 mm, though custom thicknesses are available.

The adhesive layer usually ranges from 0.01 mm to 0.05 mm, depending on the desired strength and application.

3. Adhesion Strength:

Initial Adhesion: The ability of the tape to adhere immediately after application. It’s often measured in grams per 25mm (g/25mm) or Newtons per meter (N/m).

Shear Strength: The tape’s ability to resist slippage when force is applied for extended periods, often tested with a 25mm test strip over a given time.

Peel Strength: The tape’s force required to peel it off from a surface, commonly tested on smooth or rough substrates.

4. Tensile Strength:

BOPP tape is required to have a minimum tensile strength to withstand the tension applied during handling and use. Typical values are in the range of 150-350 N/25mm.

5. Elongation:

Elongation at break is the measure of how much the tape stretches before it breaks. BOPP tape generally has an elongation range of 100-200%, depending on the specific formulation.

6. Core Size:

The core size is usually 1 inch (25mm) or 3 inches (76mm), but other sizes can be produced according to the customer’s needs.

7. Color:

Transparent, brown, and various colors are available, with transparent being the most common. The color is mainly for branding and aesthetics.

8. Environmental Resistance:

Temperature Resistance: BOPP tape can typically withstand temperatures between -10°C to +60°C, though some special formulations may have a broader range.

UV Resistance: For outdoor applications, BOPP tapes may be designed to resist UV light, which can cause the tape to deteriorate.