In modern automobile manufacturing, the wiring harness system serves as a “neural network” for electrical signal transmission, responsible for connecting and controlling the electronic systems of the entire vehicle.
In actual assembly, the fixing of switch wiring harnesses is particularly crucial – it is necessary to ensure firm adhesion while maintaining reliability under frequent bending or vibration conditions.
Today, we will take you through a typical case to learn about a high-performance adhesive suitable for fixing automotive switch wiring harnesses – PUR 1601.
Application scenarios
In the assembly process of automotive switch wiring harnesses, the wiring harness material is mostly PVC (polyvinyl chloride), which has a low surface energy. Traditional adhesives are prone to problems such as weak adhesion and cracking after bending.
The customer’s requirements are as follows:
one ️⃣ Can firmly adhere to PVC without detachment
two ️⃣ Bending 10 times without cracking, ensuring fatigue resistance performance
three ️⃣ Fast curing speed, suitable for automated dispensing production lines
Recommended solution: PUR 1601 two-component fast curing polyurethane adhesive
PUR 1601 A/B is a two-component solvent-free room temperature curing polyurethane adhesive designed specifically for the electronics and automotive assembly industries, with three core advantages: flexibility, strong adhesion, and fast curing.
✅ Product Advantages Overview:
Rapid curing: It can be cured and formed in a short time at room temperature, greatly improving production efficiency.
Excellent PVC adhesion performance: can firmly bond with various substrates such as PVC, metal, rubber, etc.
High flexibility and bending resistance: After curing, it can withstand multiple bending without cracking, suitable for dynamic parts.
Excellent aging resistance and chemical properties: can resist oil stains, moisture, and thermal aging environments for a long time.
Low VOC formula: compliant with ROHS/REACH environmental regulations, safe and odorless.
Suitable for multiple processes: machine dispensing or manual mixing operation, strong compatibility.
Application testing verification
In the customer’s on-site test, after fixing the PVC wire harness with PUR 1601, the sample was validated as follows:
🔹 Bending test: continuous bending for more than 10 times without cracks
🔹 Aging test: Adhesive strength retention rate>95% after 72 hours in a high temperature and high humidity environment at 85 ℃/85% RH
🔹 Oil stain tolerance test: no delamination after soaking in engine oil and cleaning agents
🔹 Appearance inspection: After curing, the adhesive layer is smooth without bubbles, and the appearance is neat and tidy
The test results indicate that PUR 1601 achieves an ideal balance between flexible fixation and reliable sealing, making it the preferred solution for flexible fixation of wire harnesses.
Typical application areas
Fixing of automotive switch wiring harness and headlight wiring harness
Internal cable bonding of electric tools
Consumer electronic device cable support and fixation
Seismic reinforcement of flexible cords in industrial equipment
Technical parameters (some indicators)
Project PUR 1601 A/B
System type two-component polyurethane
Appearance: Translucent to light yellow paste
Mixing ratio A: B=1:1 (weight ratio)
Dry time (25 ℃) 10-15 minutes
Complete curing time of 24 hours
Applicable materials include PVC, metal, rubber, polyester, plastic, etc
Environmental certification ROHS, REACH
For applications such as fixing automotive switch wiring harnesses that require both flexibility and adhesion,
PUR 1601 stands out for its advantages of rapid curing, high elasticity, and chemical resistance. It not only ensures that the wire harness does not fall off or crack under repeated bending, but also maintains stable performance in complex environments for a long time.
If you are also looking for a high-performance adhesive that can firmly adhere to PVC wire harnesses and withstand repeated bending,
Welcome to ELAPLUS PUR 1601- making your wiring harness more stable, faster, and durable!
Tags: PUR 1601 · PVC wire harness fixing · Automotive wire harness fixing · Wire harness fixing adhesive · Wire harness shock-absorbing adhesive · Polyurethane sealant
