Explanation of common terms for die-cutting materials: VHB, PSA, double-sided adhesive without substrate

In modern industry and manufacturing, die cutting technology is widely used in the processing and assembly of various materials. Among them, the performance and usage characteristics of die-cutting materials are crucial for the quality of the final product. This article will introduce you to three common die-cutting materials – VHB, PSA, and double-sided adhesive without substrate, and provide a detailed professional analysis of their related concepts. VHB (Very High Bond) adhesive definition: Very High Bond (VHB) is a high-performance acrylic pressure-sensitive adhesive (PSA) developed by 3M company. It is known for its excellent weather resistance and excellent initial adhesion. Features: 1 Strong adhesion: VHB can provide excellent short-term and long-term bonding strength, achieving reliable fixation even on rough or uneven surfaces. 2. Durability: VHB can still maintain its adhesion performance under extreme temperature conditions and has the ability to resist UV aging, making it suitable for outdoor use. 3. Transparency: Many VHB products are designed as transparent bodies, making them suitable for applications that require maintaining a visually appealing appearance. 4. Flexibility: VHB usually has good flexibility and elastic resilience, which helps reduce vibration and noise transmission. 5. Wide application range: Due to its versatility, VHB is widely used in identification plates, stickers, gaskets, and other industries in automobiles, construction, electronics, and other industries. PSA (Pressure Sensitive Adhesive) is a type of adhesive that can adhere directly to the surface of an object without the need for heating or solvents by applying pressure. This type of glue is widely used in multiple industries due to its easy operation. Classification: According to different chemical compositions, PSA can be divided into the following categories: natural rubber type: latex based formula, usually with good initial adhesion and wide temperature adaptability. Synthetic rubber types, such as SBR (styrene butadiene rubber) and EPDM (ethylene propylene diene monomer rubber), are commonly used in situations that require higher heat and low temperature resistance. Silicone type: Based on silicone oil, it has excellent high temperature resistance and good compatibility with various materials. Polyurethane type: Combining the high bonding ability of PSA with the excellent mechanical properties of PU, suitable for applications in special environments and harsh conditions. Acrylate type: This type of PSA, including VHB, typically provides the best balance performance, including adhesive strength, weather resistance, and cost-effectiveness. Definition of double-sided adhesive without substrate: Double sided adhesive without substrate refers to a thin film coated with adhesive on both sides without an intermediate support layer. This means that it can tightly connect two surfaces together without the need for additional carrier materials. Advantages: 1 Space saving: Compared to double-sided tape with backing, double-sided tape without substrate is thinner, so it may have advantages in some applications, especially in space limited environments. 2. Simplify the process: Since there is no need to consider the issue of backing paper peeling, using double-sided adhesive without substrate can simplify the assembly process and improve efficiency. 3. Environmentally friendly: Some designs of double-sided adhesive without substrate reduce waste, which is a significant advantage in the era of increasing environmental awareness. The selection of suitable die-cutting materials depends on specific application requirements, such as the strength, durability, flexibility, and ease of operation of the required adhesive. Understanding the basic characteristics and applicable scenarios of these materials is a key step in ensuring the success of the die-cutting process.