One-Piece Detergent Tablet with Composite Water-Soluble Film
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Solution Overview
Problem
Existing water-soluble unit-dose detergent products are prone to leakage and have reduced stability due to their liquid form, making storage and transportation challenging, and they often fail to dissolve completely at low temperatures, leaving residues.
Innovation Solution
A one-piece combination detergent tablet is developed using a high molecular water-soluble polymer base with separate surfactant compositions, including anionic and non-ionic surfactants, polymeric water-soluble films, and additives, which are compounded and shaped into a stable tablet form, eliminating the need for dosage measurement and enhancing storage and transportation stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If water-soluble film is used to wrap detergent compositions, then dosage convenience is improved, but storage stability deteriorates due to leakage and broken packaging
Solution Approach 1:
The patent changes the physical state of the detergent from liquid to solid tablet form, and modifies the water-soluble film composition to include polyvinyl alcohol and polyvinyl pyrrolidone in specific ratios. This parameter change allows the film to remain stable during storage while dissolving completely at low temperatures during use, resolving the contradiction between storage stability and dosage convenience
Solution Approach 2:
The patent uses a composite water-soluble film made from polyvinyl alcohol and polyvinyl pyrrolidone, where each component contributes different properties. The polyvinyl alcohol provides structural integrity for storage stability, while the polyvinyl pyrrolidone enhances solubility at low temperatures, thus achieving both storage stability and complete dissolution
2Reliability
If water-soluble film is made stable to moisture and durable, then storage stability is improved, but dissolution speed deteriorates at low temperatures
Solution Approach 1:
The patent optimizes the molecular weight and composition ratio of polyvinyl alcohol and polyvinyl pyrrolidone in the film. By adjusting these parameters, the film maintains moisture stability during storage but dissolves rapidly even at low temperatures, resolving the contradiction between storage stability and dissolution speed
Solution Approach 2:
The patent creates different functional zones within the water-soluble film structure. The outer layer provides moisture barrier properties for storage stability, while the inner layer contains higher concentrations of soluble polymers that facilitate rapid dissolution at low temperatures, thus resolving the contradiction through localized property distribution
3Strength
If water-soluble film is made durable, then packaging integrity is improved, but complete dissolution deteriorates leaving residues
Solution Approach 1:
The patent uses a composite film system where polyvinyl alcohol provides structural strength and durability, while polyvinyl pyrrolidone ensures complete solubility. The synergistic interaction between these two polymers allows the film to be durable during storage yet completely soluble without residues during washing, resolving the contradiction between packaging durability and complete dissolution
4Stability of the object's composition
If multiple detergent compositions are packaged separately, then compatibility is maintained, but washing time increases due to multiple steps
Solution Approach 1:
The patent merges multiple detergent compositions with different functions (anionic surfactant for cleaning, cationic surfactant for softening, nonionic surfactant for stain removal) into a single tablet format. The water-soluble film encapsulates all these compositions together, allowing them to be applied simultaneously during one washing cycle, thus resolving the contradiction between maintaining compatibility and reducing washing time
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 tablet maintains stability during storage and transportation, dissolves completely at low temperatures without residues, and provides improved decontamination, color care, and antibacterial effects, extending shelf life and reducing costs.
Implementation Method 1
a high molecular water-soluble polymer is used as a base, each of a plurality of surfactant compositions having different properties is made into an independent composition body, and the base is compounded with a plurality of independent composition bodies
Data Source
AI summary
A one-piece combination detergent tablet is provided and includes: a detergent composition body A, a color-care and anti-stain composition body B, and an antibacterial and softening composition body C. The detergent composition body A includes: an anionic surfactant A, a non-ionic surfactant A, a polymeric water-soluble film A, an additive A, and water. The color-care and anti-stain composition body B includes: an anionic surfactant B; a non-ionic surfactant B; a polymeric water-soluble film B; an additive B; and water. The antibacterial and softening composition body C includes: a non-ionic surfactant C, a quaternary ammonium cationic surfactant, a polymeric water-soluble film C an additive C, and water. The one-piece combination detergent tablet can be stably stored and has an extended shelf life and a reduced transportation costs.