Double-sided tapes come in handy for many everyday jobs around the house. They are perfect for sticking and bonding materials without the hassle of using glue or nails.
However, there are some things that you need to consider when selecting a double-sided adhesive tape manufacturer. Some important specifications include surface energy, thickness and temperature resistance.
Whether you want to mount a mirror on your wall without drilling a hole or affix an exhibit panel for a three-day show, double-sided adhesive tapes are the ideal solution. They offer a strong load-bearing capacity and allow for easy removal without leaving residue behind.
The strength of the bond resists environmental factors that typically wear down conventional fasteners, such as water damage, high temperatures and UV light. It is also capable of absorbing dynamic loads and distributing them over a larger area.
Adhesive tapes must adhere to surfaces that are free from dust, grease, dirt and other contaminants. These contaminations prevent the adhesive from making proper contact with a substrate surface and reduce its tensile strength. A firm application pressure helps to develop better adhesive-to-surface contact, resulting in greater adhesion strength. Unique materials like glass, copper and some plastics and rubber require special surface preparation to achieve a durable bond. These surfaces must be sealed to achieve a uniform surface for maximum bond strength. Common sealing materials include paint, varnish and other hard surface coatings such as epoxies.
During the adhesive coating process, a thin layer of adhesive is applied onto one side of the carrier. This is typically done using a solvent, water-based or hot-melt pressure-sensitive adhesive (PSA).
The type of adhesive determines the major tape characteristics. For example, high performance acrylic adhesives from tesa offer excellent bonding on low surface energy substrates and dissipate stress due to their viscoelastic behavior. In addition, they are resistant to high temperatures and humidity, aging and chemicals.
The backing and release liner of the tape also determines its characteristics. For instance, a paper liner can be used for masking applications or polyester film can be used to provide strength and stability to the tapes. For easy unwinding and removal, a silicone-based release coating is also added. This helps the tapes to withstand rough surfaces, prevents the adhesive from sticking to other surfaces, and leaves a clean paint anchorage. It can also help protect the adhesive from moisture that causes a loss in tack.
The carrier is a thin layer of material that the adhesive is bonded to. It offers stability to the tape, improves handling, and adds thickness for some applications. The type of carrier also plays a role in the adhesive’s ability to withstand certain conditions.
Some double-sided tapes include a cloth carrier, which offers resistance to tearing and allows for easy removal after use. Other products use synthetic rubber or vinyl carrier for added durability. The type of carrier also influences how thick the tape is and its overall performance.
The carrier may be coated with a release liner, which is peeled off before the tape is used. This helps preserve the tackiness of the adhesive until it is needed and prevents the adhesive from sticking to itself or other surfaces. We carry a wide range of different industrial double-coated tapes, including 3M VHB, in a variety of widths and liners, as well as specialty types for unique applications.
Double-sided tapes use a material backing that can range from paper to tin foil or even cloth. These materials dissipate stress, prevent oxidation and are resistant to extreme temperatures and humidity. They also help in preventing chemicals from damaging the surface of materials being held together.
At an intermediate stage of the tape’s manufacture, the PSA coatings 3 a and 3 b are in direct contact with a double-sided release liner 4 which has different differentially coated surfaces that make it easier to peel. This allows one liner to be removed before the tape is wound into a roll for use.
The choice of carrier and release liner influences major tape characteristics, especially the adhesive’s initial strength. Unsuitable selections can cause the adhesive to “split” between the release liner and substrate during conversion. These problems can result from improper handling, slitting or rewinding, inconsistent adhesive thickness and application, or from abrasion during the converting process.
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