What is the adhesive on duct tape made of?

Composition of Adhesive Tape Adhesives
1. Rubber-Based Pressure-Sensitive Adhesives

Using natural rubber or synthetic rubber (such as styrene-butadiene rubber) as the primary ingredient, they offer instant adhesion and reusability.

Plasticizers and crosslinkers are added to the adhesive to improve adhesion retention in both low and high temperature environments.
2. Polymer Modification System

Acrylate polymers or polyurethanes are often added to enhance the adhesive's resistance to aging, oil, and chemicals.

This modification allows the tape to maintain strong adhesion even in humid or dusty environments.
3. Additives and Fillers

These include antioxidants, preservatives, and filler powders (such as calcium carbonate). They are used to adjust viscosity, improve viscosity uniformity, and reduce costs.
Additives also improve the adhesive's weather resistance, preventing the tape from failing after extended use.
4. Production Process Control

Zhejiang Baiyi Adhesive Products Co., Ltd. uses a continuous coating process to ensure uniform adhesive layer thickness and stable viscosity. An online inspection system monitors the adhesive's curing and viscosity in real time, ensuring that each roll of duct tape meets international quality standards.
How to recognize a good quality PVC duct tape?
Key points for identifying high-quality PVC duct tape

1. Backing material thickness and density

The backing material of high-quality PVC tape generally has a thickness between 0.15mm and 0.25mm, a uniform density, and a tough, tear-resistant feel.

A backing material that is too thin can cause the tape to tear or deform under stress, shortening its service life.

2. Adhesive strength and uniformity

Check that the adhesive layer is smooth, free of bubbles or particles, and that the viscosity remains within the specified range (e.g., a peel strength of at least 200g/10min).
PVC tapes with a pressure-sensitive rubber-based adhesive maintain stable adhesion at varying temperatures.

3. Waterproof and weather-resistant properties

High-quality PVC tape should have a good waterproof coating to maintain adhesion in humid environments and resist water seepage. UV aging testing ensures the tape resists fading and cracking in direct sunlight.
4. Surface Finish and Printing Quality

The surface is smooth and scratch-free, and printed patterns (such as company logos or color markings) are clear and uniform in color.
This not only reflects the product's aesthetics but also indirectly demonstrates the level of quality control during the production process.