Corrugated Cardboard Box With Perforated Tear-Off Lid
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Solution Overview
Problem
Existing packaging boxes fail to allow easy and complete removal of the cover for vertical presentation on shelves without risk of slipping, and they lack reliable and controlled attachment points to prevent accidental tearing during handling or transport.
Innovation Solution
A set of corrugated cardboard box blanks with a tear-off cover design, featuring perforated junction lines and strategically aligned fold lines for easy detachment, combined with a method of manufacturing that ensures high-speed production and strong, stackable boxes with controlled resistance to prevent accidental tearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cover is made detachable for easy removal, then the ease of operation is improved, but the reliability of attachment points deteriorates due to weakened zones
Solution Approach 1:
The patent applies preliminary action by pre-creasing the tear-off lines during manufacturing to create controlled weakness zones. These pre-creased lines allow the cover to be easily torn off along predetermined paths without compromising the overall structural integrity of the attachment points during normal handling and transport.
2Strength
If the box structure is reinforced to prevent accidental tearing, then the strength is improved, but the ease of manufacture deteriorates due to complex manufacturing requirements
Solution Approach 1:
The patent applies segmentation by dividing the box structure into distinct functional zones: reinforced attachment points with multiple bonding areas, controlled tear-off lines with pre-creased weaknesses, and overlapping flaps that distribute stress. This segmentation allows each zone to be optimized independently while maintaining overall structural strength without requiring complex manufacturing processes.
3Productivity
If the cover is designed for rapid removal, then the productivity is improved, but the stability of the box composition deteriorates during handling
Solution Approach 1:
The patent applies preliminary action by pre-creasing the tear-off lines during manufacturing to create controlled weakness zones. These pre-creased lines allow the cover to be easily torn off along predetermined paths without compromising the overall structural integrity of the attachment points during normal handling and transport.
Solution Approach 2:
The patent applies segmentation by dividing the box structure into distinct functional zones: reinforced attachment points with multiple bonding areas, controlled tear-off lines with pre-creased weaknesses, and overlapping flaps that distribute stress. This segmentation allows each zone to be optimized independently while maintaining overall structural strength without requiring complex manufacturing processes.
Data Source
Figure 1A~1C
Figure 2~3
Figure 4~6
AI summary
The invention relates to a set of blanks for making a packaging box (1), to such a box and to a method for making such a box. The set includes a first blank comprising at least four main flaps connected together by first folding lines for forming the walls of the base (3) of the box, and a second blank including three panels connected together by third folding lines and including flips connected to the panels by a fourth folding line for forming the lid (2) of said box. A tearable flap (30) is connected to a flap by a perforated junction line (31), two flaps and two non-adjacent trapezoidal panels for forming the side walls and the base of the lid, wherein the two blanks are arranged so as to enable a sufficient covering in order to glue the same onto each other at the opposite inner and outer edges of the flaps and trapezoidal panels when the perforated folding line and the fourth folding lines are aligned or substantially aligned.