Pivoting Flap Dispenser for Cereal Bag Protection
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Solution Overview
Problem
Existing packaging machines for dry food products like cereals often damage plastic bags due to the weight and shape of the products, leading to slits and reduced shelf-life, necessitating thicker film or process revisions that are costly and time-consuming.
Innovation Solution
A packaging apparatus with a product dispensing port featuring pivotally mounted flaps that rotate to create a barrier within a plastic film sleeve, protecting the film from damage and allowing for consistent gusseted and filled bags, which can be fitted to existing machinery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the plastic film is increased to prevent damage from sharp-edged cereal products, then the strength and durability of the bag is improved, but the manufacturing cost and material usage increase
Solution Approach 1:
A protective sleeve made of corrugated paper or cardboard is introduced as an intermediary element between the cereal product and the plastic film. This sleeve absorbs the impact of sharp-edged products during dispensing, preventing damage to the plastic film while allowing the use of thinner, more economical film material
Solution Approach 2:
The packaging system transitions from a single-material plastic film to a composite structure combining a paper or cardboard sleeve with a plastic film layer. This composite approach leverages the protective qualities of paper/cardboard against sharp edges while maintaining the sealing and moisture barrier properties of the plastic film
2Reliability
If the thickness of the plastic film is increased to prevent slits and damage, then the reliability and shelf-life of the product are improved, but the manufacturing cost increases
Solution Approach 1:
The paper or cardboard sleeve serves as a protective intermediary that prevents direct contact between sharp cereal edges and the plastic film, eliminating slit formation and maintaining bag integrity throughout storage and transport, thereby ensuring product reliability without requiring expensive thick film
Solution Approach 2:
The corrugated structure of the paper sleeve provides pre-established cushioning and protection against mechanical damage before the product even enters the packaging process, preventing potential slits and damage that would compromise shelf-life
3Reliability
If the complete packaging process is reviewed and redesigned to prevent film damage, then the product quality and bag integrity are improved, but the investment required and time needed increase significantly
Solution Approach 1:
The packaging system is segmented into distinct functional components: an outer protective sleeve and an inner plastic film bag. This segmentation allows each component to perform its specific function independently, with the sleeve handling mechanical protection and the film providing sealing and moisture barrier functions
Solution Approach 2:
Rather than redesigning the entire packaging process, the invention introduces a simple intermediary sleeve that can be integrated into existing dispensing equipment with minimal modification, preserving bag integrity without requiring extensive process overhaul
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the use of thinner plastic film while maintaining product quality and shelf-life, reducing manufacturing costs and minimizing maintenance, and can be integrated with existing packaging systems.
Implementation Method 1
the outlet port and the associated flaps are arranged in use within a plastic film surrounding and enveloping the port i.e. a plastic film sleeve or tube passes over the outside of the outlet port. Advantageously as the bag is formed the opposing flaps rotate to create a barrier or shield which protects the plastic film from damage as the product is released into the bag.
Data Source
Figure 1~2
Figure 3A~3B
Figure 4~5
AI summary
A packaging machine and apparatus for forming and filling plastic bags for containing dry food products such as cereals or the like. The invention comprising a product dispensing port over which a film enveloping the port may pass and an inner passage through which a product may be dispensed. The dispensing port comprises a pair of opposing flaps pivotally coupled to the outlet of the dispensing port which are movable between an open and a closed position.