Delivery Bag With Lower Carrier Handle and Upper Closure
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Solution Overview
Problem
Standard delivery bags lack protection against humidity and tensile loads, often leading to tears, exposure of contents, and unauthorized access, with carrier handles or loops compromising the bag's integrity and security during transportation.
Innovation Solution
A delivery bag design featuring a closable upper end and a carrier handle or loop at the lower end, where the upper end points downwards during carrying, utilizing thermoplastic synthetic materials for durability and water-tightness, with welded seams and folds for increased stability and secure storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If carrier handles or loops are provided in standard delivery bags, then the bag enables simple transportation, but the tensile load causes the bag to tear and contents to be exposed
Solution Approach 1:
The patent inverts the conventional design by placing the opening at the upper end and the carrier handle at the lower end, opposite to each other. This inversion ensures that when the bag is carried with the opening facing upward, the tensile load from the carrier handle does not directly stress the opening area, preventing tearing and maintaining bag integrity while still enabling convenient transportation.
2Ease of manufacture
If the front wall and rear wall are produced from thin material, then costs are reduced and environmental protection is improved, but the bag lacks protection against tensile load and tears easily
Solution Approach 1:
The patent applies local quality by using thin material for the front wall and rear wall to reduce costs and environmental impact, while concentrating strength where needed - specifically at the lower end where the carrier handle is attached and at the sealed lower end. This localized reinforcement approach maintains overall bag strength for carrying while keeping the majority of the bag material thin and cost-effective.
3Device complexity
If carrier handles are provided by stamping punch-through holes, then the bag structure is simplified, but the contents are exposed to environmental conditions
Solution Approach 1:
The patent extracts the opening function from the carrier handle area by placing the closable opening at the upper end, opposite to the carrier handle at the lower end. This separation ensures that the carrier handle structure (whether punch-through or otherwise) does not compromise the sealing of the opening, and the closable opening can be properly sealed to protect contents from environmental conditions while maintaining simplified handle structure.
4Ease of operation
If the opening is located at the upper end, then the bag can be filled easily, but during carrying the opening points downwards and may open unintentionally due to tensile load
Solution Approach 1:
The patent inverts the conventional orientation by placing the opening at the upper end and the carrier handle at the lower end, opposite to each other. This ensures that when the bag is carried, the opening naturally faces upward due to gravity, preventing unintentional opening. The closable mechanism at the upper end remains stable during carrying as it is positioned away from the tensile load area at the lower end.
Data Source
AI summary
The present disclosure relates to a delivery bag in which the lower end of the bag is closed and wherein said lower end of the bag comprises at least one carrier handle or one carrier loop, and wherein at the same time, the upper end of the bag has a closable first opening for introducing articles for delivery. The present disclosure additionally relates to the use of the delivery bag according to the present disclosure for the transportation of goods for delivery, in particular goods for delivery for mail order and online commerce, as well as a method for producing a delivery bag according to the present disclosure.