Synthetic Resin Lid with Pre-Formed Perforations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing synthetic resin lids for beverage containers are difficult to puncture with a plastic straw, leading to leakage issues when impact is applied, and require separate disposal from the container, increasing user inconvenience and environmental impact.
Innovation Solution
A synthetic resin lid with a strategically designed straw puncture region featuring circular arch and linear perforations, optimized for easy piercing by a straw while maintaining impact resistance, preventing leakage and allowing unified disposal with the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lid is made from a synthetic resin to enable unified disposal with the container, then environmental friendliness and ease of disposal are improved, but the lid becomes difficult to puncture with a plastic straw
Solution Approach 1:
The patent applies preliminary action by pre-forming shallow perforated parts (half-cuts) in the lid before use. These half-cuts are created during manufacturing to a depth of 1/4 to 1/2 the resin thickness, preparing the lid for easy puncture. When a straw is inserted, it only needs to penetrate the remaining thin resin layer, significantly reducing the puncture force required while maintaining the ability to dispose of the lid with the container.
2Ease of operation
If the synthetic resin thickness at the puncture part is reduced to enable easy puncture, then punctureability is improved, but impact resistance and leakage prevention are worsened
Solution Approach 1:
The patent applies local quality by creating localized half-cuts only in specific regions where puncture is needed, rather than reducing the overall thickness of the lid. The half-cuts are formed to a controlled depth (1/4 to 1/2 of resin thickness) and are positioned strategically, allowing the lid to maintain full thickness and strength in areas requiring impact resistance while providing easy puncture pathways where needed.
3Adaptability or versatility
If the lid is made from synthetic resin instead of aluminum cap, then unified disposal with container is enabled, but separate sorting and disposal procedures are still required
Solution Approach 1:
The patent applies homogeneity by making the entire lid from synthetic resin material, matching the material composition of the container. This eliminates the laminate structure (aluminum foil + resin) found in traditional caps, creating a homogeneous single-material construction that can be disposed of with the container as a single recyclable stream, simplifying the sorting system complexity.
Data Source
Figure 1~2
Figure 3~5
Figure 4~7
AI summary
An object of the present invention is to provide a lid for a beverage container, in which both the container and the lid are formed from a synthetic resin, a straw is capable of easily puncturing the synthetic resin lid, and beverage contents will not leak, even under impact. The present invention is a lid of a beverage container, which is formed from a synthetic resin (R), includes a straw puncture region (20) being substantially round and disposed in a portion of the lid, multiple perforated parts (Hc) being formed in the straw puncture region (20) to a depth that corresponds to ¼ to ½ of a thickness of the synthetic resin, in which lid a diameter of the straw puncture region (20) is 8.0 mm or less, and a length of the perforated part (Hc) is 3.0 mm or less.