-
- News
- Books
Featured Books
- smt007 Magazine
Latest Issues
Current IssueSolder Printing
In this issue, we turn a discerning eye to solder paste printing. As apertures shrink, and the requirement for multiple thicknesses of paste on the same board becomes more commonplace, consistently and accurately applying paste becomes ever more challenging.
A Culture of Thriving
One cannot simply command thriving; it must be nurtured, developed, and encouraged. In this issue, we explore strategies to improve your working relationship model—both internally and externally. In this culture of thriving, your business will grow in the process.
Certifications
Certifications have historically been seen as a cost of doing business, but how do we turn them into a positive ROI and a value to both customer and vendor?
- Articles
- Columns
Search Console
- Links
- Events
||| MENU - smt007 Magazine
DELO Launches Liquid Pressure-sensitive Adhesives
November 5, 2020 | Delo Industrial AdhesivesEstimated reading time: 2 minutes
![](https://iconnect007.com/application/files/9216/9086/3823/DELO_Liquid_Pressure_Sensitive_Adhesives.jpg)
DELO has developed adhesives that have similar properties to (double-sided) adhesive tapes but are applied in liquid form. This helps users save time and costs in the production process. The liquid pressure-sensitive adhesives can be dispensed accurately and once the components have been joined, they can be further processed immediately in a fully automated process. The adhesives are particularly suitable for electronic applications such as smartphone speakers or display frames.
Adhesive tapes are used for numerous bonding applications in the electronics industry. Their advantage is the immediate adhesion after two components have been pressed together. However, adhesive tapes have two major disadvantages. The first is: When using small or complex tape geometries, automated handling becomes very time-consuming or even impossible due to the low stiffness of the carrier material and the high adhesive force. The second is that structures with a low fill factor, like those found in frame bonding, involve a large amount of waste from cutting the geometric shapes, which increases component costs.
The liquid pressure-sensitive adhesives from DELO now open up new possibilities. They are dispensed in liquid form directly onto the component and then irradiated by UV light. This creates a tacky surface, which is characteristic for tapes. Since the adhesive reaches its initial strength immediately after the second component is pressed on, the bonded assembly can be processed directly and without any fixing devices. This is a great advantage over many standard liquid adhesives.
The entire process, from precise dispensing even on tiny components or three-dimensional geometries to irradiation and mechanical pressing, can be fully automated. This makes the liquid pressure-sensitive adhesives particularly suitable for high-output production.
Depending on the requirements, users can choose liquid pressure-sensitive adhesives with different chemical bases. The acrylate-based adhesive DELO PHOTOBOND PS4130 has very similar properties to typical adhesive tape in terms of flexibility, peel resistance and strength. It is particularly suitable for adhesive applications with short cycle times and moderate requirements on final strength. Thanks to its excellent damping properties and low outgassing values, DELO PHOTOBOND PS4130 is already being used, for example, in the assembly of smartphone speakers.
The epoxy-based adhesive DELO KATIOBOND PS6372, on the other hand, was developed specifically for structural bonding applications requiring high strength. Once the initial strength has been achieved by pressing on the components, the assembly can be processed immediately, with the strength of the bonded joint increasing afterwards. When fully cured, DELO KATIOBOND PS6372 achieves compression shear strengths of over 30 MPa on aluminum and over 10 MPa on FR4. Its high resistance to temperature and media makes it also suitable for automotive applications.
Suggested Items
Altium, Mouser Team Up to Advance Electronics Education and Careers Worldwide
09/05/2024 | AltiumAltium LLC, a global leader in software and solutions for the electronics industry, and Mouser Electronics, a global authorized distributor of semiconductors and electronic components, are excited to announce a strategic partnership aimed at advancing electronics education and careers worldwide.
Quiet Power: An Evolution in PCB Design Costs
09/04/2024 | Istvan Novak -- Column: Quiet PowerIn this column, I want to cover my experiences, particularly where costs are concerned, with printed circuit boards from the 1960s to the present day. I grew up in an apartment building in downtown Budapest, where I began doing hobby projects building circuits from our kitchen table. Now, I’m lecturing about the most recent advances in signal integrity at Oxford University. We’ve come a long way. Over the decades, new technologies allowed users to have more layers, lower-loss dielectrics, fine-pitch surface connections, blind and buried vias, and HDI and HDI+ board constructions that allow us to design higher-performing systems. I expect this trend to continue.
CELUS Goes Global with Simplified Electronics Design Process
08/29/2024 | BUSINESS WIRECELUS, announced the worldwide availability of its revolutionary AI assisted hardware design platform that empowers engineers with the ability to find the right components for their projects through smart algorithms and the use of machine learning and AI.
Global Sourcing Spotlight: A World Full of Product Expertise
08/28/2024 | Bob Duke -- Column: Global Sourcing SpotlightWhen it comes to global sourcing, not all countries and products are created equal. Over the years, through travel and experience, I have discovered where to find the best products. Interestingly, certain countries have developed expertise in producing certain products. When it comes to industrial and electronic products, certain regions and countries are renowned for their expertise and manufacturing capabilities in specific areas. I am sure someone could write a book, and perhaps someone already has, about why certain countries excel in producing certain products.
Kopin Awarded First Order for High Resolution Microdisplay Assembly for Use in Sophisticated Electronics Manufacturing Systems
08/20/2024 | BUSINESS WIREKopin Corporation announced that it received the first production purchase order for its high resolution, 4 Megapixel 2K-R11 FLCoS Spatial Light Modulator (SLM) system for use within 3D AOI ("3-Dimensional Automated Optical Inspection") machines.