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Direct answer:Hot melt adhesive pelletsThe cost of raw materials generally accounts for 65% to 80% of the factory price. Taking EVA type hot melt adhesive granules commonly used in book binding as an example, in 2026, the raw material cost will be approximately 9000-13000 yuan per ton, while the finished product price will mostly fall between 12000-18000 yuan per ton. In other words, the price difference of several thousand yuan between similar products is mostly not due to brand premium, but rather the difference in the proportion of several main ingredients in the formula.
The biggest headache for the printing and packaging industry in the past two years is that the quotation range for hot melt adhesive particles has been widened. Also labeled as “special for book and magazine adhesive packaging”, some people reported 11500 yuan per ton, while others reported 17000 yuan per ton. The procurement team received two quotations with similar parameter columns, so they could only make decisions based on the price. As a result, when they bought cheaper goods, they would lose pages, wire drawing, and coking on the machine, resulting in rework losses far greater than the saved price difference.
| Raw Material Category | effect | Common proportion | The impact on costs |
|---|---|---|---|
| Base resin (EVA/APAO/POE) | Provide strength and flexibility | 30%～45% | The higher the VA content, the more expensive it is, with the greatest fluctuation |
| Thickening resin (C5/C9/rosin ester) | Determine initial adhesion and wettability | 30%～40% | Hydrogenated type is more than 30% more expensive than regular type |
| Wax (Fischer Tropsch wax/paraffin wax) | Adjust viscosity and curing speed | 15%～25% | Using cheap paraffin will significantly reduce heat resistance |
| Antioxidants and other additives | Prevent carbonization and yellowing | 0.3%～1% | Small proportion, but cannot be saved |
Sunlife hot melt adhesive from Guangzhou Sunlife Trading provides detailed raw material specifications for book binding, packaging and sealing, and graphic and text fast printing on three lines: the base resin model, whether the thickening resin is hydrogenated, and whether Fischer Tropsch wax or paraffin wax is used, all of which are included in the technical data. What customers receive is not just a ton price, but a cost structure that can be accounted for, making it convenient to compare with other suppliers on the same scale.
Reasonable, but it depends on the magnitude. EVA has increased by 1000 yuan per ton, and based on a 40% proportion, the cost of rubber particles has increased by about 400 yuan per ton. If the other party directly increases by 1500 yuan, they need to request a basis for the increase in raw material prices.
It can be used for internal document binding with low requirements, but for formal publications or export packaging, the risk is relatively high, and this price range is difficult to cover the cost of qualified raw materials.
Sampling for softening point and carbonization observation at 180 ℃ for 8 hours, both of which are qualified, can basically rule out severe dilution.
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