80mm Molded Fiber Triangle Sip Lid is a food-contact-grade molded pulp fiber lid designed for compatible hot beverage cups, combining a fixed direct-drink section, separate vent hole, and press-fit rim for commercial takeaway service.
| Material | Food-contact-grade molded pulp fiber |
|---|---|
| Nominal Size | 80mm |
| Drinking Structure | Direct-drink opening with separate vent hole |
| Closure Type | Press-fit |
| Applications | Hot coffee, tea, cocoa, and takeaway hot beverages |
| Available Colors | White and Natural |
| Standard Packing | 50 lids per PE bag, 20 bags per carton, 1,000 lids per carton |
Product Introduction

The 80mm Molded Fiber Triangle Sip Lid is developed for compatible hot beverage cup systems that require direct drinking access without a movable flip-top component. Its fixed triangle-design drinking section incorporates a larger sip opening and a separate vent hole in one molded fiber structure.
The direct-drink opening allows beverage access without removing the lid, while the independent vent hole supports airflow during drinking. Around the outer edge, the molded press-fit rim is designed to engage a correctly matched cup rim and provide clear fitting feedback during application.
The product uses food-contact-grade molded pulp fiber with a PFAS-free, water-resistant formulation for its intended beverage application. The White reference product shows the direct-drink opening, separate vent hole, molded warning details, smooth exterior surface, and formed outer rim.
The stated 80mm size is a nominal reference rather than a universal fit specification. Cup-rim outside diameter, rolled-edge profile, wall construction, material, and manufacturing tolerances should be reviewed using technical drawings, measured rim data, or physical samples before bulk production.
Product Specifications
| Product Name | 80mm Molded Fiber Triangle Sip Lid |
|---|---|
| Product Type | Molded Fiber Direct-Drink Lid |
| Nominal Size | 80mm |
| Lid Structure | Fixed triangle-design drinking section |
| Material | Food-contact-grade molded pulp fiber |
| Closure Type | Press-fit |
| Drinking Opening | Direct-drink opening |
| Vent Hole | Separate vent hole |
| Suitable Beverages | Hot coffee, tea, cocoa, and other takeaway hot beverages |
| Temperature Tolerance | Up to 100°C under specified test and intended-use conditions |
| PFAS Status | PFAS-free as standard |
| Water Resistance | Water-resistant formulation for intended beverage use |
| Available Colors | White and Natural |
| Cup Compatibility | To be confirmed against final cup-rim dimensions, rolled-rim geometry, cup material, and manufacturing tolerances |
| Inner Packing | 50 lids per PE bag |
| Bags per Carton | 20 PE bags per export carton |
| Carton Quantity | 1,000 lids per carton |
| Customization | Size, cup-rim fit, opening geometry, vent-hole details, molded branding, tooling, matching cups, and packing |
Key Features of the 80mm Molded Fiber Triangle Sip Lid
- Fixed drinking section: Integrates the sip area into the molded lid without a movable flip-top tab.
- Direct-drink opening: Allows beverage access without removing the lid.
- Separate vent hole: Supports airflow and smoother beverage delivery during drinking.
- Press-fit rim: Designed for secure engagement with a correctly matched cup-rim profile.
- Splash-reducing design: Helps reduce splashing during normal carrying and light movement without making an absolute leak-proof claim.
- Hot beverage specification: The confirmed material specification supports temperatures up to 100°C under defined test and intended-use conditions.
- Stable nesting: Supports compact storage, separation, counting, and bulk packing.

Common Applications
The 80mm Molded Fiber Triangle Sip Lid is intended for commercial hot beverage programs requiring direct drinking access and a separate vent hole. Typical applications include hot coffee, specialty coffee, tea, milk tea, herbal drinks, hot chocolate, cocoa, and similar takeaway beverages.
It is suitable for cafés, coffee chains, restaurants, bakeries, convenience-store beverage programs, catering operations, hospitality supply, and other B2B foodservice environments using a correctly matched cup-and-lid system.
Why Choose This 80mm Molded Fiber Triangle Sip Lid
This lid combines direct drinking access, independent ventilation, and press-fit cup-rim engagement in one fixed molded fiber structure. Unlike a flip-top model, the drinking area contains no movable tab, making the structure visually and functionally distinct within a molded fiber cup-lid range.
For B2B buyers, the key purchasing consideration is cup-and-lid compatibility rather than nominal size alone. Correct rim matching supports easier application, stable engagement, practical removal, and more consistent beverage flow during use.
B2B Buyers
- Coffee shops, café groups, and beverage chains
- Restaurants, bakeries, and catering suppliers
- Hot beverage and private-label drink brands
- Paper cup and molded fiber cup manufacturers
- Foodservice packaging distributors and wholesalers
- Packaging importers
- OEM and ODM packaging project buyers

Buyer Decision Guide
Before ordering the 80mm Molded Fiber Triangle Sip Lid, confirm the actual production cup rim rather than relying only on the nominal 80mm size. Cup-rim outside diameter, rolled-rim geometry, cup material, wall construction, and manufacturing tolerances can all affect fit.
For sample evaluation, provide cup dimensions, technical drawings, or physical cup samples and identify the intended beverage and serving conditions. Fit testing should confirm application, rim engagement, removal, drinking flow, ventilation, and splash behavior before bulk production.
PE Bag and Outer Carton Export Packing
The standard packing is 50 nested lids per PE bag, 20 PE bags per export carton, and 1,000 lids per carton.
The nested format supports compact storage, counting, separation, and commercial handling. We can review custom PE bags, outer cartons, labels, and shipping marks based on the final project specification. The carton quantity is a packing specification and should not be interpreted as a fixed MOQ.
OEM, ODM and Private Label Support
OEM, ODM, private-label, and other customized projects can be reviewed according to technical requirements. Potential customization can include nominal size, cup-rim fit, drinking-opening geometry, vent-hole details, molded branding, tooling, matching cups, and export packing.
Changes to the drinking area, vent hole, or rim-engagement structure require technical evaluation and may require dedicated tooling. MOQ, sampling, tooling cost, mold ownership, and production lead time are confirmed according to the final specification and order conditions.
Why Choose YINCO
Yinco works with beverage brands, cup manufacturers, wholesalers, distributors, importers, and foodservice packaging buyers on molded fiber cup-lid sourcing and development.
For Triangle Sip Lid projects, specification review can cover cup-rim compatibility, opening geometry, venting, material requirements, packing, customization, and destination-market documentation. Buyers can provide cup-rim data, technical drawings or physical samples, target quantity, intended beverage application, and market requirements for project evaluation.
Common Mistakes
- Ordering by nominal diameter alone: An 80mm description does not guarantee compatibility with every cup marketed as 80mm.
- Confusing the openings: The larger opening is for drinking, while the smaller separate hole is for ventilation.
- Confusing this model with a flip-top lid: The drinking structure is fixed and has no movable tab.
- Skipping production-cup testing: Final fit and drinking performance should be evaluated with the intended cup before bulk production.
- Making an absolute leak-proof claim: The structure helps reduce splashing during normal handling but is not described as completely leak-proof or spill-proof.
- Ignoring hot beverage safety: Confirm full rim engagement and appropriate beverage temperature before use.
- Confusing carton quantity with MOQ: Standard carton packing and minimum order quantity are separate purchasing terms.
FAQ
What cups fit the 80mm Molded Fiber Triangle Sip Lid?
The lid is intended for compatible paper cups and molded fiber cups with a suitable 80mm nominal rim profile. Final compatibility should be confirmed using cup dimensions, technical drawings, or physical samples.
What is the drinking structure of this lid?
The lid has a fixed molded drinking section with a larger direct-drink opening and a separate small vent hole. It does not use a movable flip-top tab.
Is the lid intended for hot beverages?
Yes. It is intended for hot coffee, tea, cocoa, and similar takeaway hot beverages under the specified test and intended-use conditions.
Is the lid completely leak-proof?
No. Correct rim engagement and the molded drinking structure can help reduce splashing during normal handling, but no absolute leak-proof or spill-proof claim is made.
What temperature can the material tolerate?
The confirmed material specification can tolerate temperatures up to 100°C under specified test and intended-use conditions. Performance also depends on the final cup-and-lid system and contact conditions.
Is the 80mm Molded Fiber Triangle Sip Lid PFAS-free?
Yes. PFAS-free production is standard for this product specification.
What colors are available?
White and Natural molded fiber colors are available. The reference product images show the White version.
What is the standard packing?
Standard packing is 50 nested lids per PE bag, 20 PE bags per export carton, and 1,000 lids per carton.
Can the 80mm Molded Fiber Triangle Sip Lid be customized?
Yes. Size, cup-rim fit, opening geometry, vent-hole details, molded branding, tooling, matching cups, and packing can be reviewed according to project requirements and technical feasibility.
Final Note
For wholesale, distributor, importer, OEM, ODM, private-label, or customized inquiries for the 80mm Molded Fiber Triangle Sip Lid, please provide your required quantity, destination market, intended cup, cup-rim dimensions or samples, beverage application, packing requirements, and any customization or documentation needs. Yinco can use this information to evaluate the appropriate cup-and-lid specification for your B2B program.