Soup paper cups do much more than hold liquid—capacity choice affects convenience, portion control, and safety.
Choose capacity based on usage scenario, soup type, and serving needs to balance practicality and comfort.
I often help clients pick cup sizes. The right match avoids spilling, reduces waste, and improves the customer experience.
Will a Soup Paper Cup Become Soft When Heated at High Temperature?
A good soup paper cup will not collapse when filled with boiling liquid.
High-quality cups may soften slightly under high heat but keep their shape long enough for consumption.
I’ve tested this myself—fill a sturdy double-coated kraft soup cup with boiling broth, and it will hold up till the last spoonful.
Factors That Affect Softening Resistance
| Factor | Effect on Heat Resistance |
|---|---|
| Paper weight | Higher gsm improves stiffness and shape retention |
| Paper type | Kraft paper fiber density resists thermal deformation |
| Inner coating | PE/PLA layer slows heat impact on paper fibers |
| Duration of hold | Longer contact with 90–100°C liquid increases softening risk |
| Stacking/storage | Poor storage causes micro-damage, weakening structure |
Will the Paper Cup Leak?
A properly produced soup paper cup will not leak under normal use.
Leakproof performance depends on coating quality1, seam sealing, and structural integrity.
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In my experience, most leaks happen not during filling, but during delivery—damage from stacking or crushing breaks the seal.
Common Leak Causes
- Coating layer too thin or uneven
- Prolonged contact with high-temperature liquid degrading the coating
- Physical damage from impact or folding
- Poor bottom seam bonding during forming
What's the Difference Between White Card and Kraft Paper Cups?
Material choice impacts strength, printability, and appearance.
White card cups offer clean looks and vibrant printing; kraft cups excel in stiffness and natural style.
I personally use kraft paper for catering jobs with long transport times—better to arrive safely than to look fancy but spill.
Comparison Table
| Feature | White Card Paper Cup | Kraft Paper Cup |
|---|---|---|
| Appearance | Bleached white, smooth, supports colorful printing | Natural brown, rustic, usually single-color print |
| Printability | Excellent, vibrant colors | Moderate, best for simple or eco designs |
| Heat Resistance | 60–90°C, moderate stiffness | Higher stiffness, better for hot soups |
| Water Resistance | Depends on coating, slightly less durable than kraft | Naturally stronger fiber network |
| Best Suited For | Aesthetic-focused drinks and light soups | Hot thick soups, long delivery, eco-focused brands |
What Are the Sizes of Soup Cups?
Size choice impacts user experience and operational fit.
Common volumes range from 300ml to 1000ml, matched to meal portion and intended use.
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I’ve seen many cafes use 360ml for lunch soups—big enough to satisfy, small enough to carry comfortably.
Common Sizes & Uses
| Capacity | Dimensions (H × Top Ø × Bottom Ø mm) | Typical Use |
|---|---|---|
| 300ml | 64 × 98 × 80 | Single serve light soup or porridge |
| 360ml | 78 × 98 × 80 | Single serve thick soup |
| 500ml | 100 × 98 × 80 | 2–3 person light soup |
| 750ml | 107 × 107 × 93 | 2–3 person thick soup |
| 1000ml | 130 × 117 × 93 | Family-sized soups like chicken or rib |
Conclusion
Choosing the right soup paper cup means matching capacity to serving needs, selecting material for both looks and heat resistance4, and ensuring good coating quality1 to prevent leaks.
1.Learn why coating quality is crucial for the performance and durability of soup paper cups. ↩
2.Explore this link to find high-quality soup paper cups that maintain their shape and prevent leaks. ↩
3.Find a comprehensive guide on soup cup sizes to match your serving needs effectively. ↩
4.Explore this resource to learn about the heat resistance of various paper cup materials. ↩