1. Assess the tape's adhesiveness by touch.

2. Use a steel plate to assess the tape's adhesiveness.

3. Other sources of the same material.

Analysis:

In fact, due to sweat and oil on the hands, the tactile feedback is often inaccurate and can lead to significant errors. Moreover, since human fingertips are soft and flexible, they can easily deform to conform to the surface of the adhesive layer—yet the properties of hand skin differ dramatically from those of the material being adhered to. As a result, the way your hand feels during application can diverge greatly from the actual adhesion experience.

The steel plate peel strength parameters are specifically designed for testing steel materials, which have a polar surface. This test method is effective only for polar or high-surface-energy materials. For materials with low surface tension—such as polyethylene (PE)—adhesion behavior can vary significantly due to differences in wettability and hardness/softness.

Other test results for similar materials are for reference only, as each manufacturer’s production process, surface treatment, and surface finish vary, leading to significant differences in actual adhesion performance.

The correct approach is:

Conduct the test using the actual materials to be applied (ensure surfaces are free of oil and grease with a solvent like alcohol before bonding); any alternative approach will be inaccurate and unrepresentative.

1. High-end materials are not necessarily better than conventional ones.

2. High-end glue is not necessarily better than regular glue.

Analysis:

The choice of substrate depends on the customer’s specific application requirements. Factors such as the required strength, flexibility, and temperature resistance must be carefully considered to select the right substrate. Keep in mind that a high-end substrate may not necessarily be suitable for every aspect of the application.

There’s no one-size-fits-all tape—only the right tape for the job (with ideal adhesion, the right price, and appropriate performance).

Shunyuan Tape operates a comprehensive quality management system and is certified under both the ISO 9001 Quality Management System and the ISO 14001 Environmental Management System. We strictly adhere to established management protocols to control raw and auxiliary materials, as well as to measure, inspect, and test product characteristics. This ensures that no products—whether untested or failing inspection—are allowed to move on to the next stage of production, guaranteeing that only qualified finished goods are either stored in inventory or shipped out. We rigorously follow all procedural requirements, including documents such as the "Process Control Procedure," "Measuring Equipment Control Procedure," "Production Equipment Control Procedure," "Nonconformity, Corrective & Preventive Action Control Procedure," "Material Inspection and Testing Procedure," and "Product Inspection and Testing Control Procedure."

When selecting tape for adhering rough materials, consider the following tips:

1. A sufficiently thick adhesive layer. For example: For materials with a roughness of 30 µm, it’s advisable to use tape with an adhesive layer measuring 40–50 µm in thickness.

2. A sufficiently soft adhesive layer. For example: high initial tack combined with a tape that feels soft to the touch.

3. Soft and thin substrates, such as: sponge tape, PE tape, PVC tape, and thinner PET tape.

4. Tapes with surface energy similar to the material—such as rubber-based, silicone-based, or modified acrylic types.

Generally speaking, excessively low ambient or surface temperatures can reduce the initial adhesion of the adhesive layer, leading to decreased tackiness. Increasing the temperature can help restore effective bonding.

Low-temperature tape maintains excellent initial adhesion even in colder environments, but its high-temperature and room-temperature holding power typically tend to be slightly lower.

If low-temperature use is required while maintaining excellent holding power at high temperatures, you can opt for silicone tape.

Hot-melt adhesive tape is a temperature-sensitive type of adhesive that requires heating to a specific temperature to achieve optimal bonding strength. At room temperature, the tape surface typically exhibits little to no stickiness. However, since it exists as a rubbery elastomer at normal temperatures, it resists sliding or deforming under external force. This makes it ideal for applications—such as structural fastening and bundling—that conventional pressure-sensitive adhesives cannot adequately handle.

Standard metrics: initial tack, adhesion strength, and peel resistance (typically at room temperature)

Special specifications: High-temperature resistance, water resistance, warp resistance, corrosion resistance (electrolyte-resistant—lithium batteries), transparency (OCA optical adhesive), color, thickness (strict thickness requirements for electronic products), die-cutting without glue overflow, and other special requirements.

By applying finger pressure, the adhesive instantly achieves bonding to the smooth surfaces of any material being joined. Moreover, when removed, it leaves no residue or contamination on the surface of the adhered material. These adhesives are pressure-sensitive and are therefore known as pressure-sensitive adhesives, or simply "PSAs."

No single tape is universally effective—instead, the right tape should be selected or developed based on the customer’s specific material requirements, ensuring it perfectly meets their needs.

Although the materials are made from the same base, differences in manufacturing processes, plasticizer migration, surface treatments (such as anodizing), and even the presence of surface rust-preventive oils can lead to significant variations in surface energy and properties. As a result, adhesion performance also varies considerably, making it essential to provide samples for standardized testing tailored to specific applications.