Twin Roll Stretch Wrap Device for One-Handed Ventilation
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Solution Overview
Problem
Manually operated stretch wrap devices with a single roll are inefficient in terms of time and energy, and they do not allow for proper ventilation of goods during wrapping, which is essential for items like produce and frozen goods.
Innovation Solution
A manually operated stretch wrap device with twin rolls of stretch wrap, featuring a rigid cylindrical support member with proximal and distal sections for rotational dispensing and a center section for one-handed operation, enabling controlled dispensing and ventilation during wrapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single roll of stretch wrap is used in a manually operated device, then the device can be operated with one hand, but the wrapping process is inefficient in terms of time and energy
Solution Approach 1:
The patent combines multiple stretch wrap rolls (at least two rolls are disclosed) into a single manually operated device, allowing the user to wrap goods more efficiently without requiring both hands. The multiple rolls are mounted on the device and can be dispensed simultaneously or sequentially, increasing wrapping productivity while maintaining one-handed operation capability.
2Device complexity
If a single roll of stretch wrap is used, then the device structure is simple, but it cannot provide proper ventilation for goods during wrapping
Solution Approach 1:
The device combines multiple stretch wrap rolls with different dispensing characteristics, allowing the user to select appropriate wrap patterns that provide ventilation gaps for goods. This enables the device to adapt to different wrapping needs (vented vs. non-vented wrapping) without significantly increasing structural complexity.
Solution Approach 2:
The device allows dynamic selection of wrapping patterns by enabling the user to control the dispensing of multiple rolls, creating variable wrap patterns that can provide ventilation when needed while maintaining structural simplicity.
3Productivity
If multiple rolls of stretch wrap are used, then wrapping efficiency increases, but the device structure becomes more complex
Solution Approach 1:
The patent integrates multiple stretch wrap rolls into a single unified device structure with common mounting and dispensing mechanisms. This merging approach increases wrapping productivity by allowing simultaneous or sequential use of multiple rolls while minimizing the increase in overall device complexity through shared structural elements.
Data Source
AI summary
A manually operated stretch wrap device comprising: a rigid, cylindrical support member comprising: a proximal section adapted to support a stretch wrap roll, and to facilitate rotational dispensing of the stretch wrap from said roll, a distal section adapted to support a stretch wrap roll, and to facilitate rotational dispensing of the stretch wrap from said roll, and a center section adapted to be held by a person using one hand and adapted to facilitate rotational dispensing of the stretch wrap from the proximal and distal sections of the device.