What kind of glue is used for Bopp tape?

BOPP (Biaxially Oriented Polypropylene) tape is typically made using acrylic adhesive or rubber-based adhesive. Here’s a breakdown of these two types of glue used in BOPP tape:

1. Acrylic Adhesive:

Water-based or Solvent-based: Acrylic adhesives are commonly used in BOPP tapes due to their excellent clarity, weather resistance, and long-term adhesion. Acrylic adhesives can either be water-based or solvent-based.

Advantages:

UV Resistance: Acrylic adhesive is highly resistant to UV light, making it ideal for outdoor use.

Temperature Resistance: It performs well in both high and low-temperature environments.

Long Shelf Life: Acrylic-based adhesives have a longer shelf life and maintain their adhesive properties over time.

Non-yellowing: The adhesive does not yellow over time, keeping the tape looking clear and clean.

2. Rubber-based Adhesive:

Hot-melt Adhesive: Rubber-based adhesives, often in the form of hot-melt adhesives, are also used for BOPP tapes. These adhesives are generally applied in molten form and then solidify as the tape cools.

Advantages:

Strong Initial Tack: Rubber adhesives have an excellent initial tack (stickiness), which makes them ideal for applications where immediate adhesion is required.

Good for Indoor Use: Rubber-based adhesives are generally better for short-term, indoor applications, where UV and temperature stability are not as critical.

Choosing the Adhesive Type:

Acrylic Adhesive: Preferred for applications requiring long-term durability, resistance to sunlight, and temperature variations.

Rubber-based Adhesive: More suitable for short-term use, especially for packaging that doesn’t require long exposure to varying environmental conditions.