PEVA Storage Bag Double-Locking Seal
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Solution Overview
Problem
Current storage containers are either bulky and reusable or lightweight but designed for single-use, lacking desirable properties such as washability, sealability, reusability, and durability, which limits their practicality for food and travel storage.
Innovation Solution
Development of lightweight, flexible, washable, sealable, reusable, and durable storage containers made from a thermoplastic material like FDA-grade polyethylene vinyl acetate (PEVA) blends, featuring a unique double-locking closure mechanism and multiple welded seams for enhanced strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If lightweight disposable style bags are used, then weight is reduced and portability is improved, but durability and reusability deteriorate
Solution Approach 1:
The patent changes the material parameters by using thermoplastic polymers with specific melting points and thermal properties that allow the bag to withstand repeated washing and use cycles while maintaining lightweight characteristics. The material composition and molecular structure are modified to achieve both light weight and durability.
Solution Approach 2:
The patent employs composite material structures combining thermoplastic polymers with reinforcing elements and multi-layer constructions. The composite design integrates different material properties to achieve both lightweight status and enhanced durability, creating a material composition that resists degradation from washing and repeated use.
2Ease of manufacture
If single-use disposable bags are used, then manufacturing cost is reduced, but washability and reusability are lost
Solution Approach 1:
The patent modifies the material parameters to include thermoplastics with specific thermal stability and chemical resistance properties that enable the bag to withstand dishwasher washing and repeated use. The material composition is adjusted to maintain structural integrity after cleaning while keeping manufacturing processes simple and cost-effective.
3Reliability
If glass containers are used, then durability and reusability are improved, but weight increases and portability deteriorates
Solution Approach 1:
The patent uses thin-film thermoplastic constructions that provide sufficient durability and sealability without the bulk and weight of glass. The flexible polymer films are engineered to be thin yet strong, maintaining structural integrity while minimizing weight, creating a lightweight alternative that feels durable in use.
Solution Approach 2:
The patent employs composite material designs that combine lightweight thermoplastic polymers with reinforcing structural elements. The composite construction provides the necessary durability and strength to withstand use and washing while maintaining the lightweight characteristic, replacing heavy glass with engineered polymer composites.
4Weight of moving object
If plastic containers are used, then weight is reduced, but toxin contamination and bulkiness worsen
Solution Approach 1:
The patent changes the material composition parameters by selecting specific thermoplastic polymers and their ratios to achieve optimal properties. The material formulation is adjusted to ensure food safety and prevent toxin contamination while maintaining lightweight characteristics and practical size.
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
The solution provides a versatile storage bag that is airtight, waterproof, and can withstand multiple washes and reuses, addressing the need for a durable, flexible, and eco-friendly storage option that is cost-effective and suitable for daily use.
Implementation Method 1
multiple welded seams for enhanced strength and durability
Data Source
AI summary
Disclosed are embodiments of a versatile storage bag and methods of making same. The versatile storage bag may have first and second sidewalls, a double-locking closure mechanism with a first closure element extending along the first sidewall and a second closure element extending along the second sidewall, each closure element having a channel and an elongated member configured for interlocking with one another. A double-seal along three sides of the first sidewall and the second sidewall form a gusset between two seals, leaving an opening through the double-locking closure mechanism. Corner seals may be formed at the corners of the first and second sidewalls, further reinforcing the double-locking closure mechanism for an airtight and hence waterproof seal. The versatile storage bag may be made of a food-grade polyethylene vinyl acetate blend, approximately 90% or less ethylene vinyl acetate and approximately 10% or less polyethylene.