Quick Summary
The 78 Flat Lid is a sustainable, leak-proof lid made from PLA (Polylactic Acid), designed to fit perfectly on 78 Series cups, including the 78-7oz, 78-8oz, 78-9oz, and 78-10oz. This lid ensures a secure, leak-proof seal when the cup is tilted, providing reliability and convenience for on-the-go use. It features a built-in space for straws and offers a customizable surface for embossing. Ideal for cold beverages, the 78 Flat Lid is also 100% compostable and biodegradable, making it an eco-friendly alternative to traditional plastic lids.
DaShan & Craftsmanship Storytelling
At DaShan, we focus on producing innovative, high-quality food packaging solutions that combine sustainability with functionality. The 78 Flat Lid is crafted with the same care and attention to detail as all of our products. By using PLA (Polylactic Acid), a biodegradable and compostable material made from renewable plant-based resources, the 78 Flat Lid ensures minimal environmental impact while offering businesses a reliable and customizable packaging solution.
Every 78 Flat Lid is designed to seamlessly fit on the 78 Series cups. Its precise fit ensures a leak-proof seal that holds up even when the cup is tilted. This functionality is particularly valuable for businesses in the foodservice industry, offering customers the peace of mind that their beverages will remain securely sealed during transport.

Materials & Sourcing
The 78 Flat Lid is made from PLA, a plant-based material derived from renewable resources like corn or sugarcane. Unlike traditional petroleum-based plastics, PLA is biodegradable and compostable, breaking down naturally in industrial composting environments. The material is certified by several international standards, including ISO 9001, FDA, ASTM D6400, and BPI. These certifications ensure that the lid is safe for use in food applications and has a minimal environmental footprint.
At DaShan, we carefully select our suppliers to ensure that the PLA used in our products meets the highest quality and sustainability standards. The 78 Flat Lid aligns with our commitment to providing eco-friendly alternatives that help reduce plastic waste and promote a circular economy.

Key Features & Structure of 78 Flat Lid
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Material: Made from PLA, an eco-friendly, biodegradable material that decomposes in industrial composting conditions.
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Leak-Proof Design: The 78 Flat Lid is designed to fit securely on the 78 Series cups, ensuring a perfect seal. The lid prevents any leakage, even when the cup is tilted, making it ideal for on-the-go use.
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Customizable Surface: The 78 Flat Lid offers a smooth surface that can be customized with embossing or printing, making it a perfect choice for businesses looking to personalize their packaging.
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Straw Hole: The lid comes with a built-in hole for straws, making it ideal for beverages that require a straw for consumption, such as iced drinks, smoothies, and juices.
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Biodegradable & Compostable: As a PLA product, the 78 Flat Lid is 100% biodegradable and compostable in industrial composting facilities, offering an environmentally responsible alternative to traditional plastic lids.
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Perfect Fit for 78 Series Cups: The 78 Flat Lid is designed to fit snugly on the 78-7oz, 78-8oz, 78-9oz, and 78-10oz cups, ensuring that the beverages stay secure and spill-free.
 

Detailed Features & Product Details
- Product Model:78F
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Material: PLA (Polylactic Acid)
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Weight: 1.7g
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Dimensions: 78mm diameter
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Packaging: 1000 pieces per carton
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Carton Size: 44.0 x 25.0 x 35.0 cm
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CBM: 0.04
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Design: Secure, leak-proof fit
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Straw Hole: Convenient hole for inserting straws
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Customization: Can be embossed with logos or designs
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Sustainability: 100% biodegradable and compostable
 
The 78 Flat Lid is manufactured through a thermoforming process, where PLA material is heated and molded into its final shape. This method ensures that the lid is durable, lightweight, and capable of withstanding the rigors of foodservice operations.
Sustainability
The 78 Flat Lid reflects DaShan‘s commitment to sustainability. By using PLA, an alternative to petroleum-based plastics, the 78 Flat Lid is a step toward reducing plastic waste and promoting a circular economy. PLA is compostable in industrial composting conditions, where it breaks down in approximately 60-90 days.
The 78 Flat Lid is certified by:
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ISO 9001: Quality management system certification.
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FDA: Food safety certification for materials in contact with food.
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ASTM D6400: Certification for compostability.
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BPI: Biodegradable Products Institute certification.
 
These certifications ensure that the 78 Flat Lid is safe, high-quality, and environmentally friendly.

Capacity & Use Scenarios
The 78 Flat Lid is compatible with the following 78 Series cups, making it ideal for a wide variety of applications:
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Cold Beverages: The 78 Flat Lid is perfect for beverages like iced coffee, smoothies, juices, and soda that require a secure, leak-proof seal. Its design ensures that even when the cup is tilted, no liquid spills out.
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Foodservice: Restaurants, cafes, and juice bars can use the 78 Flat Lid to serve beverages in an eco-friendly, convenient manner. It’s perfect for takeaway drinks, ensuring the drink is securely sealed and ready for transport.
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Events & Catering: The 78 Flat Lid is ideal for catering services or events where cold drinks are served, providing customers with a secure, leak-proof option.
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Retail: Beverage retailers can use the 78 Flat Lid to package their drinks, offering a high-quality, customizable lid that reflects their brand’s commitment to sustainability.
 

Product Comparisons
Here’s how the 78 Flat Lid compares with other 78 Series lids:
 
| Model | Material | Weight | Dimensions (mm) | Packaging | Carton Size (cm) | CBM | 
|---|---|---|---|---|---|---|
| 78F Lid | PLA | 1.7g | 78mm diameter | 50pcs/bag | 44.0 x 25.0 x 35.0 | 0.04 | 
| 78D Lid | PLA | 2.2g | 78mm diameter | 50pcs/bag | 44.0 x 28.0 x 35.0 | 0.04 | 
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78F (Flat Lid): A smooth, flat lid with a straw hole and a leak-proof design, ideal for cold drinks that need secure sealing and can be tilted without leaking.
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78D (Dome Lid): A dome-shaped lid, also made of PLA, offering a slightly different aesthetic and volume capacity, with a higher profile for drinks topped with whipped cream or ice.
 
Cup Models Compatible with 78 Flat Lid:
 
 
 
| Model | Capacity | Material | Weight | Dimensions (mm) | Packaging | Carton Size (cm) | CBM | 
|---|---|---|---|---|---|---|---|
| 78-7oz | 210ml | PLA | 6.5g | 78 x 50 x 80 | 50pcs/bag | 41.0 x 33.0 x 41.0 | 0.06 | 
| 78-8oz | 240ml | PLA | 5.7g | 78 x 50 x 85 | 50pcs/bag | 41.0 x 33.0 x 37.0 | 0.05 | 
| 78-9oz | 270ml | PLA | 7g | 78 x 48.5 x 99 | 50pcs/bag | 41.0 x 33.0 x 38.0 | 0.05 | 
| 78-10oz | 300ml | PLA | 7.5g | 78 x 50 x 108 | 50pcs/bag | 41.0 x 33.0 x 42.0 | 0.06 | 
The 78 Flat Lid is designed to be compatible with the 78 Series of cups, ensuring that the beverages stay securely sealed and spill-free, even when tilted.
Customization Options
The 78 Flat Lid offers several customization options:
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Custom Printing: Add logos, slogans, or designs to the lid, making it a perfect branding opportunity for businesses.
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Embossing: Create a unique, raised design or logo for a premium look and feel.
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Size Options: While the 78 Flat Lid is designed for the 78 Series cups, custom sizes may be available upon request to fit other cup models.
 
About DaShan – Trusted Food Packaging Manufacturer
DaShan is a leading provider of high-quality, sustainable food packaging solutions. Our expertise in PLA, PET, and CPET materials enables us to deliver eco-friendly products that cater to a wide range of industries, including foodservice, retail, and distribution. With a strong focus on sustainability, innovation, and customer satisfaction, we are proud to offer customizable solutions that meet the needs of our clients.
🌎 Global Exhibition Highlights
DaShan has participated in several international exhibitions, showcasing our products to a global audience:
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Canton Fair (China)
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Gulfood Manufacturing (Dubai)
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Pack Expo (Chicago, USA)
 

FAQ
Q1: What material is the 78 Flat Lid made from?
The 78 Flat Lid is made from PLA (Polylactic Acid), a biodegradable and compostable material derived from renewable plant sources.
Q2: Can the 78 Flat Lid be used with hot beverages?
No, the 78 Flat Lid is designed for cold beverages only. PLA is not suitable for hot liquids.
Q3: Can the 78 Flat Lid be customized with my logo?
Yes, the 78 Flat Lid can be customized with printing or embossing to showcase your logo or brand design.
Q4: How long does it take for the 78 Flat Lid to decompose?
The 78 Flat Lid, made from PLA, is compostable in industrial composting environments and typically decomposes within 60-90 days.
Q5: What is the packaging of the 78 Flat Lid?
The 78 Flat Lid is packaged with 50 pieces per bag and 1000 pieces per carton. The carton size is 44.0 x 25.0 x 35.0 cm, with a CBM of 0.04.
Conclusion
The 78 Flat Lid is the perfect combination of sustainability, functionality, and customization. Designed to complement the 78 Series cups, it offers a secure, leak-proof solution for serving cold beverages, making it ideal for businesses looking to enhance their eco-friendly offerings. With its biodegradability and customizable features, the 78 Flat Lid sets the standard for environmentally conscious packaging.