Large-volume orders of insulated lunch bags may be customized, but the available product information does not confirm that custom packaging is provided without an additional charge. The square-bottom insulated bag supports changes to its dimensions, construction, insulation core, artwork, and colors. Custom production generally begins at 5,000 to 10,000 units, while the final minimum order quantity and price must be confirmed from the selected specifications.
The standard structure consists of an aluminum foil laminate exterior, a 2–5 mm closed-cell EPE foam insulation layer, and a food-grade PE inner contact surface. An air-bubble insulation core can also be considered when requested.
A moulded handle is integrated and sealed into the upper band, while the usual closure is a flat seal. Available bag sizes range from 30 x 35 x 10 cm to 45 x 50 x 15 cm. Standard base depths include 10, 12, and 15 cm, with the option to match the side gusset or define another depth.
Branding can be printed on the front, rear, and two side gussets. Customers may select custom Pantone colors or retain the natural silver appearance of unprinted foil. These choices allow the same general format to be adapted for different delivery conditions and branding programs.
For hot food delivery, the listed configuration combines a foil-lined body with a firm flat base. Grocery and cold-chain applications can use a dedicated gel-pack sleeve together with a waterproof inner membrane to support temperature-sensitive distribution.
Huizhou Ecopack Packaging Products Co., Ltd. reports ISO 9001:2015 quality management certification. Its quality system includes incoming material checks, inspections during production, and pre-shipment inspection, with finished products evaluated through AQL sampling.
Company case information also references a United States distributor purchasing insulated mailers for cold shipping at an annual volume of 10 million pieces. The case highlights reduced heat transfer and lower storage and transport space than rigid foam packaging. It does not indicate that this product, or any custom packaging service, is supplied without extra fees.
| Item | Available information | What buyers should confirm |
|---|---|---|
| Custom order quantity | Common starting range of 5,000–10,000 pieces | Confirm the precise MOQ for the selected design |
| Bag structure | Square bottom with side gussets and a folded base | Specify whether the base should match the gusset or use a separate depth |
| Insulation layer | 2–5 mm closed-cell EPE foam, with air bubble available on request | Identify the preferred core in the quotation request |
| Printing and finish | Full-color printing, Pantone matching, or unprinted silver foil | Define artwork coverage and color requirements |
| Customization cost | No standard free-customization policy is stated | Request an itemized quotation covering all additional charges |
Can a large order receive custom packaging without an added fee?
The supplied information does not confirm free customization for larger quantities. It confirms that customization is available, but the price must be determined from the required specifications.
Which details are required for an accurate quotation?
Submit the required dimensions, bag structure, insulation core, closure style, print coverage, and color preferences. Custom production usually starts at 5,000–10,000 pieces, with the final MOQ reviewed individually.
What are the sample and production lead times?
Sample preparation generally requires 3–5 working days. After artwork approval, mass production typically takes 15–25 days.
Large orders of square-bottom insulated lunch bags can be tailored in terms of size, insulation, structure, closure, graphics, and color. However, the available data does not support a claim that customization is included at no additional cost. Before placing an order, request a written quotation that clearly separates the product price, customization fees, tooling or setup costs, and any other charges. For technical assistance, contact manager@ecopack.com.
Huizhou Ecopack Packaging Products Co., Ltd. is a flexible packaging manufacturer established in Guangdong, China, in 2011. It produces custom composite pouches and bags, including insulated packaging, and ships to more than 40 countries. The company reports a production capacity of more than 500,000 pouches per day and holds ISO 9001:2015 and FSC Chain of Custody certifications.

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