Gift Box Inserts: 5 Types Compared – EVA / EPE / Sponge / Cardboard / Blister
💡 💡 At a Glance
Five material options for gift box inserts: ①EVA (0.3-0.6 CNY per piece, mold tooling: 800-3000 CNY, suitable for <5000 pieces); ②EPE (0.15-0.40 CNY per piece, offers the strongest protection but has an average appearance); ③foam (0.08-0.20 CNY per piece, the least expensive but with poor resilience); ④cardstock (0.15-0.35 CNY per piece, the most environmentally friendly and printable, but offers weak protection); ⑤thermoforming (0.8-1.5 CNY per piece, mold tooling: 80,000-150,000 CNY, most cost-effective for over 10000 pieces).
Last month, a client who produces high-end watch gift boxes came to me. One of their new watches was priced at 5800 yuan, while the overall budget for the gift box was 35 yuan. I asked him which interior insert to use, and he looked completely bewildered: “I never thought about it. Whatever the printing factory recommends is what I’ll use.” We then reviewed the costs together and found that the interior insert alone accounted for 12 yuan—more than one-third of the gift box’s cost.
This case is actually quite representative. The gift box insert is the item most likely to be overlooked during procurement. Printers often mention it only in passing when quoting a price (“the insert is calculated separately according to the material”), and customers likewise tend to overlook it when signing the contract. Yet the choice of insert material directly determines three core aspects of the gift box: protection, visual quality, and cost structure.
Category 1: EVA Inserts—the "Default Choice" for Premium Gift Boxes
EVA is ethylene-vinyl acetate copolymer. It resembles rigid foam in appearance and can be finished with flocked fabric lamination, PU leather wrapping, flocking, and other treatments. Unit price: 0.3-0.6 yuan per piece; minimum order quantity: 100 pieces per batch; mold-opening fee: 800-3000 yuan.
EVA is the most common insert material for premium gift boxes, mainly because it allows for four types of surface finishes with distinct textures: ① bare EVA (lowest cost); ② EVA wrapped in flocked fabric (cost +0.15-0.30 yuan); ③ PU leather-wrapped EVA (cost +0.40-0.80 yuan); ④ flocked EVA (cost +0.50-1.00 yuan).
The key advantage of EVA is its low tooling cost—laser or CNC mold engraving costs 800-3000 yuan, 30-50 times cheaper than vacuum-forming molds. This makes EVA particularly suitable for custom gift boxes in small production runs of 500-5000 units.
The disadvantage of EVA is environmental pressure. EVA is a petroleum-based material and is not degradable. The EU Extended Producer Responsibility (EPR) regulations are imposing increasingly stringent recycling deposit requirements on EVA trays. If the gift box is intended for export to the EU, using recycled EVA or water-based adhesive lamination is recommended.
Category II: EPE Inner Trays — The Most Protective Type
EPE is polyethylene foam, commonly known as "pearl cotton," and has a white or black foam pellet structure. Unit price: 0.15-0.40 yuan/piece; minimum order quantity per batch: 50 pieces; virtually no tooling required (die-cut according to product dimensions).
The core advantage of EPE is its compression resistance and cushioning performance. EPE with a thickness of 1 cm can withstand 5 kg of static pressure without deformation. Among all inner cushioning materials, EPE provides the strongest impact resistance, making it particularly suitable for fragile products such as glass bottles, porcelain, and electronics.
The disadvantage of EPE is its visual and tactile quality. EPE has a strongly granular surface, and even when laminated with flocked fabric or paper, its texture is still less fine than EVA. EPE is rarely used for inserts in mid- to high-end gift boxes (unit price above 200 yuan), and is mainly used for inserts in industrial and electronic products.
Type 3: Foam Inserts—The Least Expensive Option
Sponge is a polyurethane (PU) foam material with a soft, porous appearance. Unit price: 0.08-0.20 yuan/piece; minimum order quantity per batch: 50 pieces; mold-opening fee: 0 yuan (cut to size or stamped).
Sponge is the least expensive of the 5 types of inner tray materials and is also the most common low-end gift box packaging material. However, sponge has several drawbacks: ① poor resilience, with compression marks appearing after 6-12 months of use; ② poor heat resistance (deformation at >60℃); ③ shedding particles (powder contaminates the product).
Sponge inserts are mainly used in the following scenarios: ① low-cost e-commerce gift boxes (total unit price < 50 yuan); ② jewelry boxes and cosmetic sample packs; ③ disposable holiday gift boxes (Dragon Boat Festival, Mid-Autumn Festival, and Spring Festival).
Category 4: Cardboard Inner Tray — The Most Environmentally Friendly but Least Protective Type
Paperboard inner trays are made from high-grammage paperboard (350-600 g) through die-cutting, folding, and gluing. Unit price: 0.15-0.35 yuan/piece; minimum order quantity per batch: 100 pieces; tooling fee: 500-2000 yuan (die-cutting plate).
The key advantages of cardboard inserts are their recyclability, degradability, and suitability for printing. The cardboard itself can accommodate 4-color printing, allowing the brand story, maintenance instructions, and product traceability QR code to be printed inside the gift box. This is something the other 4 types of insert materials cannot achieve.
However, cardboard inserts provide weak protection—their compression and impact resistance are far lower than those of EVA / EPE / foam. If the product itself is fragile (such as glass bottles, porcelain, or precision electronics), using a cardboard insert alone is not recommended. A dual-layer structure of "cardboard + foam" can be used, with the outer cardboard serving the display and printing functions and the inner foam providing protection.
Category 5: Thermoformed Inner Trays — the "Industrial-Grade" Option for Large-Volume Orders
Blister trays are made by thermoforming plastic sheets (PVC, PET, PP). Unit price: 0.8-1.5 yuan/piece, but mold-opening cost: 8-15 ten thousand yuan.
The biggest advantage of thermoforming is the lowest unit cost for large production runs. Although mold-opening costs are high, once amortized across orders of more than 100,000 pieces, the per-piece mold cost becomes negligible. In fact, the unit price is 20-30% lower than that of EVA.
The disadvantage of thermoforming is the minimum order quantity threshold. For orders below 8000-10000 units, it is not recommended to develop a thermoforming mold because the mold development cost cannot be adequately allocated. Consider thermoforming only for orders of 10000 units or more.
Thermoforming is mainly used in the following scenarios: ① Batch packaging of cosmetics (lipsticks, powder compacts, perfume bottle inserts); ② Electronic accessories (phone cases, data cables, earphones); ③ Mass-produced food gift boxes (chocolate and mooncake inserts).
How to Choose Type 5 Inner Trays?
The selection logic is simple: consider order volume, product protection level, and budget.
3 Details You Cannot See in a Printer's Quotation
First, EVA density. Industry quotations typically specify only “EVA insert” without stating the density, yet EVA with a density of 38 kg/m³ and 55 kg/m³ feels vastly different. It is recommended that the contract specify “EVA density ≥ 45 kg/m³”.
Second, the grammage of the cardboard. The price difference between 350 g and 600 g cardboard is 30%. It is recommended that the contract specify "cardboard grammage ≥ 400 g" to prevent the printing plant from substituting inferior materials.
Third, thermoforming materials. PVC is inexpensive but contains chlorine and has already been restricted by the European Union; PET is environmentally friendly but costs 30% more; PP offers the best value for money. It is recommended that the contract specify "Thermoforming material: PET or PP; PVC is not accepted."
Further Reading
FAQ
How to choose among EVA, EPE, sponge, cardboard, and blister for gift box inserts?
Based on order quantity: <500 units — EVA (low tooling cost); 500-5,000 units — EVA or sponge; 5,000-10,000 units — cardboard + sponge double-layer; 10,000+ units — blister tooling. Based on protection level: fragile items — EVA or EPE; ordinary products — sponge or cardboard; high display needs — EVA or blister.
Is EVA insert under heavy environmental pressure?
Yes, quite heavy. EVA is a petroleum-based, non-biodegradable material. EU EPR regulations are imposing increasingly strict recycling deposit requirements on EVA inserts. For gift boxes exported to the EU, consider recycled EVA or water-based adhesive lamination. There are no mandatory recycling requirements domestically yet, but this may follow after 2025.
Is the 80,000-150,000 RMB blister tooling fee worth it?
Only for orders of 10,000+ units. With a tooling fee of 80,000-150,000 RMB amortized over 100,000 units, the per-unit tooling cost is about 0.08-0.15 RMB, making the unit price 20-30% lower than EVA. For orders <10,000 units, EVA or sponge is recommended instead.
Can cardboard inserts protect fragile products?
Not on their own. Cardboard's compression and impact resistance are far lower than EVA/EPE/sponge. A "cardboard + sponge" double-layer structure is recommended — the outer cardboard handles display and printing, while the inner sponge handles protection. Overall cost is 15-20% lower than EVA alone, with better visual texture.
How long before sponge inserts develop compression marks?
Standard-density sponge (25-30 kg/m³) develops visible compression marks after 6-12 months of use. High-density sponge (40 kg/m³ or above) can extend this to 18-24 months. For long-term-use gift boxes (such as jewelry boxes or commemorative items), high-density sponge or EVA is recommended.
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