Loop-Shaped Hair Holder Elastomer Composition
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Solution Overview
Problem
Conventional loop-shaped hair holding devices made of elastic plastic materials suffer from poor surface unctuousness, leading to hair tearing during removal, and degradation in elasticity resulting in deformation over time.
Innovation Solution
A loop-shaped hair holding device composed of 40 wt % butadiene, 10 wt % polyethylene, 3 wt % polypropylene, 15 wt % paraffin oil, 12 wt % styrene, 15 wt % silicone, and 3 wt % stabilizer, with a cross-linking agent, providing improved surface unctuousness, toughness, and high elasticity, while maintaining shape and resisting ozone, light, and heat exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If elastic plastic material is used to provide clamping force, then the device can hold hair by elasticity, but the surface unctuousness is poor causing hair to tear during removal
Solution Approach 1:
The patent modifies the chemical composition parameters of the elastomer by incorporating specific ratios of polyethylene (10-20 parts), polypropylene (5-15 parts), and paraffin oil (10-20 parts) per 100 parts of butadiene-styrene copolymer. This compositional parameter change transforms the material properties to achieve both adequate clamping force and reduced surface stickiness, preventing hair tearing during removal.
Solution Approach 2:
The patent creates a composite elastomeric material by combining multiple polymers (butadiene-styrene copolymer, polyethylene, polypropylene) with lubricants (paraffin oil) and cross-linking agents. This composite formulation integrates the elastic properties of the base polymer with the low-friction characteristics of the added materials, simultaneously providing clamping force while reducing surface stickiness.
2Duration of action of moving object
If conventional elastic plastic material is used, then the device provides initial elasticity, but the elasticity degrades over time causing deformation
Solution Approach 1:
The patent extracts the weakness of conventional materials (poor long-term elasticity retention) and addresses it by selectively adding functional components: cross-linking agents (2-5 parts per 100 parts polymer) to create molecular network structures that maintain elastic memory, and stabilizers (1-3 parts per 100 parts polymer) to prevent degradation from ozone, light, and heat exposure.
Solution Approach 2:
The patent applies protective measures in advance by incorporating antioxidants and stabilizers into the material formulation before the product is put into service. These additives preemptively protect the elastomer structure from environmental degradation factors (ozone, UV light, heat), cushioning against the inevitable aging process and maintaining shape stability throughout the product's service life.
3Object-generated harmful factors
If elastic band made of cloth is added to improve surface unctuousness, then hair sticking is prevented, but manufacturing costs increase and the band still deforms over time
Solution Approach 1:
The patent merges the functions of multiple components into a single integrated elastomeric material. Instead of combining a separate cloth band with the plastic body, the invention incorporates lubricating agents (paraffin oil) and surface-modifying additives directly into the elastomer formulation, creating a unified material that provides both structural integrity and low-friction surface properties, thereby reducing device complexity while maintaining effectiveness.
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 device effectively prevents hair from sticking and breaking upon removal, maintains shape over time, and reduces susceptibility to oxidation, deterioration, and cracking, offering enhanced hair holding and durability compared to conventional products.
Implementation Method 1
2 wt % of a cross linking agent. The ingredients are polymerized
Implementation Method 2
3 wt % of a stabilizer... reduces the influence by ozone, light, and heat and is less easily to oxide, deteriorate, and crack
Data Source
AI summary
A loop-shaped hair holding device is made from ingredients including 40 wt % of butadiene, 10 wt % of polyethylene, 3 wt % of polypropylene, 15 wt % of paraffin oil, 12 wt % of styrene, 15 wt % of silicone, 3 wt % of a stabilizer, and 2 wt % of a cross linking agent. The weight of each of the ingredients has a margin of error of 5%. The loop-shaped hair holding device has good surface unctuousness, good toughness, and high elasticity to avoid deformation.