Envelope Detergent Film Plasticization for Leakage
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Solution Overview
Problem
Existing detergents face challenges in providing a convenient and accurate dosage for laundry, leading to inefficient washing, storage discomfort, and stability issues due to the scattering of powders and slow dissolution of liquid detergents, as well as leakage and residue problems with water-soluble films.
Innovation Solution
An envelope-type detergent with detergent ingredients solidified in a polymer film, specifically formulated with non-ionic and anionic surfactants, film-forming water-soluble polymers, alkali builders, and plasticizers, providing a controlled thickness and strength for easy use and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If water-soluble polymer films are used to package detergent, then the detergent can be divided into smaller sizes and the disadvantages of powder and liquid detergents can be alleviated, but the hermetically sealed portion breaks open during storage or transport, causing leakage and deterioration of storage stability
Solution Approach 1:
The patent changes the physical and chemical parameters of the film material by adding plasticizers (glycerol, sorbitol, or mannitol at 1-20 parts by weight) and adjusting the polymer composition (polyvinyl alcohol with specific degree of polymerization and saponification). These parameter changes increase the film's flexibility and resistance to breaking during storage and transport, while maintaining water solubility for easy dissolution during use.
2Reliability
If water-soluble polymer films are designed to be stable against moisture and durable, then storage stability is improved, but it takes considerable time to dissolve the detergent at typical laundry water temperatures, leaving film residues
Solution Approach 1:
The patent optimizes the film-forming polymer parameters by selecting polyvinyl alcohol with a degree of polymerization of 100-3000 and saponification degree of 75-95%, and controlling film thickness at 0.004-2.0 mm. These parameter changes enable the film to maintain moisture stability during storage while dissolving rapidly in cold or warm water during laundry, preventing residue formation.
Solution Approach 2:
The patent creates a composite material system combining polyvinyl alcohol polymer with plasticizers (glycerol, sorbitol, or mannitol) and detergent ingredients. This composite structure provides both the necessary storage stability through moisture resistance and rapid dissolution capability, as the plasticizer components facilitate water penetration and polymer chain separation during dissolution.
3Adaptability or versatility
If consumers directly weigh detergent based on laundry amount, then flexible dosage is achieved, but the desired washing effect cannot be obtained due to excessive or sparing use of detergent
Solution Approach 1:
The patent segments the detergent into pre-measured individual envelope units, each containing a precise amount of detergent formulated for specific laundry weights (e.g., 100g, 200g, 300g laundry). This segmentation eliminates the need for consumers to measure detergent manually, ensuring accurate dosage while maintaining flexibility through availability of different envelope sizes for different laundry amounts.
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 envelope-type detergent allows for easy quantification of detergent use, eliminates storage discomfort, ensures excellent solubility in cold water, and maintains storage stability, reducing residue and leakage issues.
Implementation Method 1
a film forming water-soluble polymer
Implementation Method 2
1 to 20 parts by weight of a plasticizer
Data Source
AI summary
The present invention relates to a detergent composition for preparing an envelope type detergent, the detergent composition including: a) a non-ionic surfactant; b) an anionic surfactant; c) a film forming water-soluble polymer; d) an alkali builder; and e) a plasticizer, and an envelope type detergent prepared therefrom.