How to write the technical specifications for bidding and procurement of hot melt adhesive granules? Directly copy the list of 8 terms and conditions

Bidding for hot melt adhesive granules, if the technical specifications are not clearly written, the goods will look the same and be overturned when they arrive. Below is thisList of 8 terms and conditionsCovering two commonly used adhesives for book binding and packaging, they can be directly copied into the procurement documents.

1、 List of Basic Parameters

• 1. Substrate typeClear EVA/APAO/polyamide (PA), EVA is commonly used in books and magazines, and APAO is selected for temperature resistant scenarios.
• 2. Softening pointBook adhesive 80-95 ℃, sealing adhesive 70-90 ℃, indicate the range instead of a single value.
• 3. Melt viscosityCorresponding to your glue application equipment (roller coating/spray coating), write the range of mPa · s at the test temperature.
• 4. Opening hoursMatching machine speed, automatic lines often require 8-20 seconds, and wireless glue installation is stricter.

2、 Performance and Compliance Checklist

• 5. Adhesive indicatorsWrite the peel strength (N/25mm) for books and magazines, and the initial adhesion and tensile strength (kN/m) for packaging.
• 6. Environmental complianceFood/export packaging must be RoHS compliant, halogen-free, low odor, and accompanied by testing report requirements.
• 7. Particles and PackagingUniform particle size, packaged in 25kg bags or ton bags, moisture-proof inner layer, marked with batch number for traceability.
• 8. Acceptance and after-sales serviceSampling and retesting upon arrival, return and exchange of non-conforming products, and technical on-site machine adjustment support.

3、 Directly usable technical terms template

4、 Avoiding pitfalls reminder

Don’t just write ‘high-quality EVA hot melt adhesive particles’, as this vague term can be filled in by the supplier. Sunlife Hot Melt Adhesive (Guangzhou Sunlife Trading) provides customers with tender documents that are attachedTested parameter table+sampleWhen evaluating bids, taking samples for machine testing is more reliable than looking at paper parameters.

Frequently Asked Questions

Q1: Do we need to write so detailed for small batch purchases?
You don’t need to copy everything, but the softening point, model, and substrate must be written, otherwise the delivery will not be accurate.

Q2: Why do we need to write the opening hours?
The mismatch between the opening time and the machine speed, which can result in weak adhesion or blocked grooves due to wire drawing, is the most easily overlooked key item in bidding.