Boîte d'emballage alimentaire pour petit-déjeuner sandwich personnalisé avec fenêtre

Q1: How should we choose paper thickness for different sandwich fillings?

Consider the sandwich weight, filling moisture, grease level, and holding time. For a sandwich box used with eggs, cheese, bacon, or sauces, a thicker board or suitable lining may be needed for better structure and grease resistance. For lighter, drier sandwiches, a lighter paper structure may be sufficient. We recommend testing the actual food before finalizing the specification, especially for delivery, display, or longer holding periods. This approach helps avoid both under-specifying the packaging and paying for unnecessary material thickness.

Q2: Is a PET window suitable for oily or moist sandwiches?

Yes, a PET window can be used for oily or moist sandwiches, but the window should be evaluated together with the paper structure and lining. The PET window provides product visibility, while the paper and coating handle most of the contact and structural requirements. For sandwiches with bacon, cheese, sauces, or other greasy fillings, the sandwich packaging should be tested under actual storage and holding conditions. We recommend checking window bonding, condensation, grease exposure, and overall box strength before approving a large production run.

Q3: Can we customize a wedge box for different sandwich sizes?

Yes, a sandwich wedge can be customized around different product dimensions. The box can be developed according to the sandwich length, width, height, filling volume, and desired presentation. This is useful when a restaurant or foodservice brand has several sandwich SKUs that should share a consistent packaging style. Instead of using one oversized standard box, we recommend matching the structure more closely to each product. For takeaway, delivery, or refrigerated display, the final fit should also be tested to make sure the sandwich remains properly positioned during handling and transport.

Q4: Should we choose PE or PLA lining for sandwich packaging?

PE is generally the practical choice when strong grease and moisture resistance is the main requirement, while PLA can be considered when a plant-based lining is preferred. The right option depends on the food, holding conditions, and your packaging sustainability requirements. For a sandwich container used with oily or moist fillings, we recommend evaluating the complete paper structure rather than choosing a coating based on material type alone. Before bulk production, confirm food-contact requirements, intended use, and actual performance with your packaging manufacturer to ensure the selected structure fits the application.