Corrugated Corner Post Ribs for Film and Package Slippage Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing packaging solutions for large products using plastic film and paper-based cushioning structures suffer from slippage issues during handling and transport, leading to compromised package integrity and potential product damage.
Innovation Solution
A corrugated corner post for plastic film wrapped packages, fabricated from a paperboard blank, featuring recessed areas and ribs that mesh with adjacent posts to prevent vertical slippage, and recessed edge contours to grip the film, ensuring it doesn't slide along the posts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If smooth paper-based cushioning structures are used, then manufacturing is simple and cost-effective, but plastic film slippage occurs during handling and transport
Solution Approach 1:
The corner post incorporates localized ribs with transverse contours at specific positions where the plastic film contacts the post. These ribs create asymmetric engagement surfaces that prevent film slippage without requiring complex structures throughout the entire post, thus maintaining manufacturing simplicity while improving reliability at critical locations.
Solution Approach 2:
The ribs are formed with transverse contours (curved surfaces) rather than flat surfaces. This curvature creates mechanical interlocking with the plastic film, preventing slippage. The curved geometry is achieved through standard corrugated board construction and folding techniques, maintaining ease of manufacture while effectively preventing film slippage.
2Strength
If hollow cushioning structures are used, then corner protection is provided, but the structures can collapse under film wrap tension
Solution Approach 1:
The corner post is constructed from multiple layers of corrugated board stacked and bonded together, creating a segmented multi-layer structure. This provides both the strength needed for corner protection and the structural stability to resist collapse under film tension, as each layer contributes to the overall load-bearing capacity.
Solution Approach 2:
The corner post uses composite construction combining multiple layers of corrugated board with different orientations and properties. This composite structure provides enhanced strength for corner protection while maintaining structural stability under tension, overcoming the collapse issue of single-layer hollow structures.
3Device complexity
If linear smooth corner structures are used, then device complexity is low, but vertical slippage between adjacent packages occurs
Solution Approach 1:
The ribs are positioned specifically at locations where adjacent packages contact each other vertically. This localized feature prevents vertical slippage between packages without adding complex structures throughout the entire corner post, maintaining low device complexity while improving reliability for preventing package slippage.
Data Source
AI summary
A corner post for a plastic film wrapped package include a first corner post leg and a second corner post leg that intersect at a post corner. The outer wall of the first corner post leg includes a plurality of recessed areas extending inward from an outer surface of the outer wall and are longitudinally spaced to define a plurality of ribs along the outer wall. The recessed areas and ribs are spaced so that the ribs of corner posts of adjacent packages mesh to prevent relative vertical movement of the packages. The post corner of the corner post may include longitudinally spaced recessed edge contours extending inward that grab plastic film as it is stretched or heat shrunk around the package to prevent the plastic film from sliding along the corner post.