Quiet Layer Polymeric Film Noise Dampening
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Solution Overview
Problem
Conventional polymeric films used in medical applications, such as ostomy pouches, suffer from noise emission due to the crystallinity of PVDC layers, leading to user embarrassment, while also lacking adequate noise dampening and high tensile strength.
Innovation Solution
A polymeric film with a barrier layer comprising PVDC and an adjacent quiet layer incorporating sound dampening polymers, which converts noise into viscous energy, thereby reducing noise propagation and maintaining high tensile strength and barrier properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PVDC layer is used for barrier properties, then gas and odor barrier qualities are improved, but noise emission increases due to crystallinity
Solution Approach 1:
A quiet layer is introduced as an intermediary between the PVDC barrier layer and the external environment. This quiet layer absorbs and dampens the noise generated by the crystalline PVDC structure during flexing, while allowing the PVDC layer to maintain its essential barrier function against gas and odor penetration.
Solution Approach 2:
The patent converts the harmful noise emission from PVDC crystallinity into a beneficial quiet performance by adding a dedicated noise-dampening layer. The quiet layer's viscoelastic properties transform the mechanical energy of noise into heat, effectively converting the harmful acoustic emission into a benign thermal effect.
2Object-generated harmful factors
If quiet layer with sound dampening polymers is added, then noise dampening is improved, but device complexity increases
Solution Approach 1:
The film structure is segmented into distinct functional layers: a PVDC barrier layer for gas and odor protection, and a separate quiet layer for noise dampening. This segmentation allows each layer to be optimized for its specific function while maintaining overall film performance.
Solution Approach 2:
The patent employs a composite multilayer structure combining PVDC polymer with a quiet layer containing viscoelastic polymers. This composite approach integrates materials with complementary properties to achieve both barrier functionality and noise dampening in a single film product.
3Reliability
If multilayer film laminate is used for barrier properties, then gas and moisture barrier are improved, but manufacturing complexity increases
Solution Approach 1:
The multilayer film is segmented into specialized layers with distinct functions: PVDC layers for barrier properties and quiet layers for noise control. This segmentation enables independent optimization of each layer's composition and thickness during the coextrusion manufacturing process.
Solution Approach 2:
The quiet layer serves multiple functions simultaneously: it dampens noise from PVDC crystallinity, provides structural support to the film laminate, and maintains compatibility with standard flexible packaging manufacturing processes, making the multilayer structure universally applicable.
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 film achieves improved noise dampening, high tensile strength, and effective gas, odor, and liquid barrier qualities, enhancing user comfort and product performance in medical applications.
Implementation Method 1
an adjacent quiet layer incorporating sound dampening polymers, which converts noise into viscous energy
Data Source
AI summary
The presently disclosed subject matter is directed to polymeric films suitable for use in a wide variety of applications, such as the formation of ostomy bags, incontinence bags, medical collection bags, and the like. Specifically, the disclosed films comprise at least one barrier layer. At least one quiet layer positioned adjacent to the barrier layer incorporates sound dampening polymers. As a result, the disclosed films maintain improved sound dampening, as well as exemplary barrier characteristics and high tensile strength compared to prior art barrier films.