Perforated Top Panel for Shrink-Wrapped Bottle Packs
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Solution Overview
Problem
Conventional collation shrink films are often too strong, making it difficult for consumers to open shrink-wrapped packages without tools like knives or scissors, as they require tearing or ripping, which can lead to the package falling apart prematurely.
Innovation Solution
A perforated top panel with an easy-open design featuring alternating cuts and lands, a semi-circular portion, and tapered sections that allow consumers to easily tear open the package without tools, ensuring the film remains intact during opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional collation shrink films are made strong to maintain packaging integrity, then load retention resistance and seal strength are improved, but ease of opening deteriorates requiring tools like knives or scissors
Solution Approach 1:
The shrink film is segmented into two distinct regions: a strong seal region that maintains packaging integrity and a perforated easy-open region that facilitates consumer opening. The perforated panel includes alternating cuts and lands that create a controlled tearing path, allowing the film to be separated without requiring cutting tools while maintaining overall package strength during transport.
2Ease of operation
If the shrink film is made easy to tear open, then ease of opening is improved, but package structural integrity deteriorates causing premature falling apart
Solution Approach 1:
Different regions of the shrink film are assigned different mechanical properties: the seal region maintains high strength and integrity to prevent premature opening, while the perforated panel region is designed with controlled weakness through alternating cuts and lands to facilitate easy consumer opening. This local differentiation resolves the contradiction between ease of opening and package integrity.
3Reliability
If the shrink film is made strong to prevent premature opening, then reliability is improved, but ease of manufacture deteriorates requiring precise control of seal strength
Solution Approach 1:
The shrink film is divided into a seal region and a perforated easy-open region, allowing independent optimization of each region's properties. The seal region can be manufactured with high strength requirements without affecting the ease of opening, as the perforated panel provides a predetermined tearing path that requires minimal force to initiate opening.
Data Source
AI summary
An apparatus and a method are provided for a perforated top panel disposed in a shrink-wrapped bottle pack for containing water bottles. The perforated top panel includes an easy-open panel and a semi-circular portion disposed at a terminal end of the easy-open panel. The easy-open panel is partially bordered by an alternating series of cuts and lands that are configured to allow the easy-open panel to tear away from the top panel upon being pulled by a practitioner. The easy-open panel includes a parallel portion that extends to one or more tapered portions that terminate at the semi-circular portion. The semi-circular portion is configured to be grasped and pulled to separate the tapered portion and the parallel portion from the top panel and thus expose the water bottles.