Pet Bed Mat with Moisture-Permeable Back Sheet
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Solution Overview
Problem
Pet beds often hinder air permeability due to waterproof and air-impermeable absorbent sheets, leading to skin steaming and increased risk of bedsores in bedridden pets, especially when excretion occurs.
Innovation Solution
A pet bed design featuring a mat with a fiber structure of thermoplastic resin fibers and an absorbent sheet with a liquid-permeable top sheet and a liquid-impermeable, moisture-permeable back sheet, ensuring air and moisture permeability to prevent skin steaming and bedsores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a waterproof and air-impermeable absorbent sheet is used to handle excretion, then liquid absorption capability is improved, but air permeability is hindered causing skin steaming and bedsores
Solution Approach 1:
The absorbent sheet is divided into multiple functional layers: a top sheet for liquid reception, an absorbent core for fluid absorption, and a back sheet that is liquid-impermeable but air-permeable. This segmentation allows each layer to perform its specific function while collectively solving the contradiction between liquid absorption and air permeability.
Solution Approach 2:
Different regions of the absorbent sheet have different properties: the top sheet is liquid-permeable for receiving excretion, the absorbent core has high absorption capacity, and the back sheet is selectively permeable (liquid-impermeable but air-permeable). This local differentiation of properties resolves the contradiction by having the right material characteristics in the right locations.
2Quantity of substance
If a traditional absorbent sheet with liquid impermeable back sheet is used, then excretion management is improved, but moisture permeability is reduced leading to skin steaming
Solution Approach 1:
The back sheet is designed as a porous material that allows air and moisture vapor to pass through while blocking liquid excretion. This porous structure enables moisture evaporation and air circulation, preventing skin steaming and heat buildup while still managing excretion effectively.
Solution Approach 2:
The absorbent sheet is constructed as a composite of multiple materials with different properties: a liquid-permeable top layer, an absorbent intermediate layer, and an air-permeable liquid-impermeable back layer. This composite structure combines the benefits of liquid barrier properties with moisture vapor transmission capabilities.
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 design effectively suppresses steaming and bedsores by maintaining air permeability and moisture diffusion, even when excrement is excreted, enhancing pet comfort and reducing the risk of decubitus ulcers.
Implementation Method 1
the mat is a fiber structure which is configured by a thermoplastic resin fiber
Implementation Method 2
a liquid permeable top sheet
Implementation Method 3
an absorbent body
Implementation Method 4
a liquid impermeable and moisture permeable back sheet
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The purpose of the present invention is to provide a pet bed which, even when excretion or another liquid is excreted onto an excretion surface of the bed during use of the pet bed, can suppress stuffiness on the excretion surface of the pet bed, and bedsores (pressure sores) resulting therefrom. This pet bed (1, 41) is provided with: a mat (3) having a planar direction and a thickness direction and having a top surface and a bottom surface; and an absorbent sheet (5) which is arranged on the top surface of the mat so as to overlap the mat in the thickness direction. The mat (3) is a fibrous structure configured from thermoplastic resin fibers (15, 17), and the absorbent sheet (5) includes a liquid-permeable front surface sheet (21), an absorbent body (25), and a liquid-impermeable and moisture-permeable back sheet (23).