Plastic Liquid Container With Segmented Bladder To Prevent Leaching
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Solution Overview
Problem
Current plastic bags and bladders for storing liquids like wine are often made with toxic materials that can leach chemicals into the liquid, leading to an unpleasant taste and potential health risks, while glass bottles are not durable and impractical for travel or presentation.
Innovation Solution
A BPA-free, non-toxic plastic liquid container and dispensing system comprising a reusable plastic bottle and a disposable, recyclable bladder with a leak-proof spout mechanism that allows for easy filling and pouring, ensuring the liquid remains fresh and safe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If toxic plastic bags and bladders are used for storing liquids, then the container is lightweight and durable, but chemicals leach into the liquid causing health risks and unpleasant taste
Solution Approach 1:
The system divides the container into two separate components: a reusable outer bottle made of safe, non-toxic plastic and a removable inner bladder that comes in contact with the liquid. This segmentation allows the liquid-contacting portion to be made from food-grade materials while maintaining the durability benefits of plastic construction.
Solution Approach 2:
The patent introduces an intermediary layer (the inner bladder) between the liquid and the outer container structure. This inner bladder is specifically designed to be food-safe and non-toxic, mediating the interaction between the liquid and the outer bottle while preventing chemical leaching.
2Object-affected harmful factors
If glass bottles are used for storing liquids, then the material is non-toxic and preserves liquid quality, but the container is fragile and not suitable for travel
Solution Approach 1:
The patent employs a flexible inner bladder made of food-grade plastic that can be inserted into a rigid outer bottle. This flexible membrane provides the non-toxic liquid contact surface while the outer bottle provides structural strength and durability, combining the benefits of both glass and plastic.
Solution Approach 2:
The system uses composite construction with an inner bladder made from food-safe flexible material and an outer bottle made from durable rigid plastic. This composite approach allows the container to exhibit both the non-toxic properties needed for liquid storage and the mechanical strength required for durability and travel.
3Object-affected harmful factors
If a reusable plastic bottle with inner bladder is used, then the container is durable and non-toxic, but the structure becomes more complex
Solution Approach 1:
While segmentation into inner bladder and outer bottle does increase component count, it enables the use of simpler, food-grade materials for the liquid-contacting portion while maintaining overall structural simplicity through modular design that allows easy assembly and disassembly.
Data Source
AI summary
A plastic liquid container and dispensing system includes a plastic bottle with first and second detachable bottle parts, a bladder for holding liquid including a bladder top, a bladder base and a bladder lock-nut integrally positioned at or fixedly attached to the bladder base and formed with a flow path for liquid out of the bladder and a spout having a spout body with a connecting end, an internal liquid flow path extending from the connecting end to a liquid outflow port and a release button for enabling liquid flow through the internal liquid flow path and out the liquid outflow port. The spout is removably attached via first threads to the bladder lock-nut to connect the spout to the bladder and a bladder flange positioned between the spout and the bladder gasket facilitates connecting the bladder and spout to the bottle top.