Staged Container Separation System Reducing Plastic Waste
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing separating systems for detaching containers from a plastic web generate significant plastic waste and often result in uneven peripheral edges due to maladjustment of tools and inefficient cutting processes.
Innovation Solution
A separating system comprising a stamp plate and a cutting plate with alternating rows of stamps and cutting openings, along with a forward intermittent feeding mechanism, which punches and detaches containers from the plastic web in stages to minimize waste and ensure smooth edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional cutting apparatuses with container-shaped stamps and cutting plates are used to separate containers, then containers can be detached from the plastic web, but a large amount of plastic waste is generated due to spaces between peripheral edges of adjacent containers
Solution Approach 1:
The cutting process is divided into multiple sequential stages: first cutting star-shaped wastes between rounded corners, then making longitudinal cuts along straight edges, and finally making transverse cuts. This segmentation allows each cutting operation to focus on specific waste areas, minimizing overall plastic waste while achieving precise container separation.
Solution Approach 2:
The star-shaped wastes between rounded corners are cut first before the longitudinal and transverse cuts. This preliminary action removes the most difficult-to-access waste material first, creating better access for subsequent cutting operations and enabling more precise final cuts along the container edges.
2Manufacturing precision
If multiple tools are used to separate containers from the plastic web, then containers can be detached, but maladjustment between tools results in uneven peripheral edges
Solution Approach 1:
Multiple cutting functions (star-shaped waste cutting, longitudinal cutting, and transverse cutting) are integrated into a single cutting apparatus that can perform all operations sequentially. This merging eliminates maladjustment issues between separate tools while maintaining precise peripheral edges through coordinated operation of all cutting elements.
Solution Approach 2:
The cutting apparatus performs cutting operations in a periodic sequence: first cutting star-shaped wastes, then longitudinal cuts, then transverse cuts, and repeating this cycle. This periodic action ensures that each type of cut is made with properly adjusted tools at the optimal time, resulting in smooth peripheral edges.
3Loss of substance
If conventional cutting methods are used to omit only longitudinal strips between straight edges, then some waste is reduced, but star-shaped wastes and transverse strips between adjacent containers remain as waste
Solution Approach 1:
The waste removal process is segmented into three distinct cutting phases: star-shaped waste cutting, longitudinal strip cutting, and transverse strip cutting. This comprehensive segmentation ensures all types of waste are removed while maintaining high productivity through efficient sequential execution of each phase.
Solution Approach 2:
The cutting apparatus continuously removes all types of plastic waste (star-shaped, longitudinal strips, and transverse strips) in an uninterrupted sequential process. This continuous useful action maximizes waste reduction while maintaining high container separation efficiency without idle time between different waste removal operations.
Data Source
AI summary
A separating system for detaching containers from a thermoformed plastic web including a first row of containers. The system includes a stamp plate and a cutting plate. The stamp plate includes a first row of stamps associated with a first set of containers from the first row of containers and a second row of stamps associated with a second set of containers from the first row of containers. The cutting plate includes a first row of cutting openings associated with the first set of containers and a second row of cutting openings associated with the second set of containers.