With the increasing level of automotive electronics, more and more complex electronic devices are being integrated into cars, which poses higher challenges to the design and fixing requirements of automotive wiring harnesses. Automotive switch wiring harnesses not only need to provide stable power connections, but also need to adapt to complex working environments, with high durability and flexibility. Therefore, selecting appropriate adhesive materials to ensure stable and long-term reliability of the wiring harness has become the top priority for automotive manufacturers and suppliers.
Among them, switch wiring harnesses are usually composed of various substrates such as PVC material, metal, plastic, etc. Traditional bonding methods or materials often fail to maintain sufficient stability when facing high temperatures, high humidity, bending, and long-term stress, resulting in problems such as loose, detached, or even broken connections in switch wiring harnesses. How to choose an adhesive that can provide strong adhesion on multiple material surfaces while withstanding repeated bending, aging resistance, and chemical erosion has become an urgent problem to be solved.
Fixing of automotive switch wiring harness
Challenge
Bending stress: Automotive switch wiring harnesses often require bending and stretching, especially during installation and dynamic changes in vehicle operation, where the wiring harness needs to undergo frequent bending. Ordinary adhesives may crack or fail during repeated bending due to a lack of sufficient flexibility and elasticity. Therefore, choosing an adhesive with excellent flexibility and high elasticity has become crucial.
Adhesive bonding of PVC material: PVC, as a common plastic material, has good electrical insulation and durability, but its surface is smooth and prone to forming an oxide layer, which makes it difficult for many adhesives to effectively bond. In the car environment, insufficient adhesion between PVC surface and other materials may result in the adhesive being unable to firmly fix the switch harness, thereby affecting the overall stability of the system.
Curing speed: Production efficiency is crucial in modern automotive manufacturing processes. The curing speed of adhesive directly affects the work efficiency of the production line. A too slow curing process not only increases the production cycle, but may also cause unnecessary time delays in subsequent processes, affecting the overall production schedule. Therefore, choosing adhesives that cure quickly and have high efficiency is an important guarantee for improving production efficiency.
Recommended products: PUR 1601
To address these challenges, we recommend using PUR 1601 two-component solvent-free room temperature curing adhesive. This adhesive is specifically designed for fixing automotive switch wiring harnesses, with excellent flexibility, superior PVC bonding ability, and fast curing performance. PUR 1601 A/B is a two-component solvent-free room temperature curing adhesive. Low odor, low VOC, compliant with ROHS and REACH regulations. Wide process operability, high physical properties of finished products, suitable for machine dispensing or manual mixing operation; After curing, it has good adhesion and strong bonding force, excellent flexibility and elasticity, as well as good aging resistance and chemical resistance. Suitable for sealing and bonding various materials such as metal, plastic, rubber, polyester, etc.
Product Features
✔ Low VOC, compliant with ROHS/REACH
✔ Machine dispensing or manual mixing is available
✔ Strong adhesion to various substrates
✔ High toughness and elasticity
✔ Excellent resistance to aging and chemicals, fixing of automotive switch wiring harness
Summary
With the continuous improvement of safety and performance requirements in the automotive industry, it is particularly important to choose suitable adhesives to fix and protect automotive switch wiring harnesses. PUR 1601 has become the best choice for automotive manufacturers and suppliers to address these challenges due to its excellent PVC bonding ability, rapid curing properties, high toughness and elasticity, aging resistance, and chemical resistance. It can not only effectively solve problems such as frequent bending and poor durability, but also greatly improve production efficiency, providing the automotive industry with higher quality and more competitive products.
label: PVC · Plastic bonding · Automotive wiring harness fixation · Adhesive sealant · Polyurethane sealant · Polyurethane adhesive sealant
