Strapping Machine for PET Bottles with Perpendicular Strap Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for packing PET bottles using heat shrinkable plastic polymers are inefficient and not suitable for industrial application, particularly in forming stable and economic packs of containers.
Innovation Solution
A strapping machine that uses band-like bindings to securely fasten PET bottles in a predetermined arrangement with at least one or two straps oriented perpendicular to the bottle axes, and a third strap forming a handle, allowing for efficient packing of bottles in groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heat shrinkable plastic polymers are used to pack PET bottles, then the bottles can be secured in packs, but the packing method is inefficient and not suitable for industrial application
Solution Approach 1:
The patent replaces the thermal shrinking mechanism with a mechanical strapping system. Instead of using heat shrinkable plastic polymers that require thermal processing, the invention uses tensioned straps that are mechanically tightened and secured around the bottle groups, providing stable packaging through mechanical force rather than thermal contraction.
Solution Approach 2:
The invention changes the fundamental parameter of pack securing from thermal-based (heat shrinkage) to mechanical-based (strap tension). By transitioning from temperature-dependent shrinkage to force-dependent strap tightening, the system achieves both industrial efficiency and reliable pack stability.
2Adaptability or versatility
If conventional strapping machines are used for packing bottles, then strapping technology can be applied, but the results show poor efficacy and implementation problems
Solution Approach 1:
The patent divides the strapping process into distinct operational phases: bottle grouping, horizontal positioning, strap application, and handle formation. This segmentation allows conventional strapping machines to be effectively adapted for bottle packing by breaking down the complex task into manageable steps that the machine can execute sequentially with high efficiency.
Solution Approach 2:
The invention introduces a horizontal positioning dimension to the strapping process. By laying bottles horizontally on their side before applying straps, the system creates an optimal configuration that enables efficient strap application and improves overall packing efficacy, representing a dimensional change from traditional vertical bottle handling.
3Ease of operation
If groups of bottles are fed upright to strapping devices, then the bottles maintain their standard position, but the strapping process becomes less efficient
Solution Approach 1:
The patent implements preliminary horizontal positioning of bottle groups before they reach the strapping devices. By pre-arranging bottles in the optimal horizontal configuration upstream, the strapping process itself becomes faster and more efficient, as the bottles are already in the correct position for strap application without requiring complex repositioning during strapping.
Data Source
AI summary
A plant for packing bottles or similar containers includes an operating unit carrying out a rapid assembly that includes a portable pack made by three straps: a first one applied on the lower half of the body of the bottles, a second one applied at the neck of the bottles, both arranged on planes perpendicular to the vertical axes of the bottles, and a third one applied loosely and perpendicularly to the other two straps and laying on a vertical plane passing through the center of gravity of the pack.