Fiber-Based Liquid Container Coating for Leak Control and Scent Diffusion
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Solution Overview
Problem
Existing fiber-based containers for liquid laundry compositions are prone to leakage due to manufacturing defects in the barrier coating, and consumers cannot effectively smell the scent without opening the product, leading to spills and consumer dissatisfaction.
Innovation Solution
A fiber-based container with a dimensionally stable shell made of compressed pulp and a polymeric material coating, featuring a lipid bilayer phase transition temperature of at least 25°C, which includes a polymeric material selected from polyolefin, polyamide, polyester, biopolymer, or polysaccharide, ensuring fluid-tightness and allowing scent diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a barrier coating is applied to the inner surface of the fiber-based container, then the container becomes watertight, but the coating may contain defects leading to leakage
Solution Approach 1:
The patent applies a thickness distribution strategy where the barrier coating is thicker at the bottom portion of the container and thinner at the top portion. This beforehand cushioning approach ensures that the bottom, which is more prone to leakage due to its position and stress, receives enhanced protective coverage, compensating for potential coating defects in critical areas while maintaining overall watertightness.
Solution Approach 2:
The patent implements local quality by varying the coating thickness according to the specific functional requirements of different container regions. The bottom portion receives a thicker coating (first thickness) for superior leak prevention, while the top portion receives a thinner coating (second thickness), optimizing both performance and material efficiency. This localized differentiation addresses the contradiction by providing enhanced protection where needed without uniformly increasing coating complexity.
2Ease of operation
If the consumer opens the cap to smell the scent, then the consumer can evaluate the product, but it leads to spills and mess
Solution Approach 1:
The patent employs a flexible cap design that can be deformed to create a sniffing opening without requiring full removal or complete opening of the cap. This flexible shell approach allows consumers to access the scent through controlled, minimal openings, enabling product evaluation while preventing the spills and mess associated with full opening and reclosing operations.
Solution Approach 2:
The patent enables preliminary scent evaluation through the flexible cap mechanism before the consumer commits to full product usage. Consumers can perform the useful action of smelling the product through the flexible opening without the harmful consequence of potential spills that would occur with complete opening and subsequent reclosing, thus resolving the contradiction between evaluation capability and spill prevention.
3Reliability
If a thick barrier coating is applied to prevent leakage, then the container becomes more reliable, but the manufacturing complexity increases
Solution Approach 1:
The patent resolves the contradiction between reliability and manufacturing complexity by applying local quality principles. Instead of uniformly thick coating throughout, the barrier coating is strategically thicker only at the bottom portion where leakage risk is highest, while the top portion has a thinner coating. This localized approach achieves superior leak prevention in critical areas without the manufacturing complexity and material cost of a uniformly thick coating.
Solution Approach 2:
The patent implements parameter changes by varying the coating thickness parameter across different spatial locations of the container. The thickness transitions from a first thickness at the bottom to a second thickness at the top, creating a gradient structure that optimizes both leak prevention and manufacturing feasibility. This parameter variation resolves the contradiction by providing enhanced reliability where needed while maintaining manufacturing simplicity through a controlled, location-dependent thickness profile.
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 leak-proof and environmentally friendly container that allows consumers to smell the scent without opening, reducing spills and enhancing consumer satisfaction.
Implementation Method 1
a liquid conditioning composition contained in the cavity, the liquid conditioning composition comprising a quaternary ammonium alkyl compound and having a lipid bilayer phase transition temperature (Tm) of at least 25° C.
Implementation Method 2
the fiber-based container has a Perfume Diffusion Value of at least 2.0 nmol/L
Data Source
AI summary
A consumer product includes a liquid conditioning composition including a quaternary ammonium alkyl compound, wherein the liquid conditioning composition has a lipid bilayer phase transition temperature (Tm) of at least 25° C., wherein the liquid conditioning composition is contained in a fiber-based container including a layer of compressed pulp forming a dimensionally stable shell and enclosing an interior space, wherein the shell is at least partially coated with a layer including a polymeric material disposed on an inner surface of the shell adjacent to the interior space.