Dishwasher Component Wall Adhesive Layer Without Thermal Deformation
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Solution Overview
Problem
Hot-melt adhesives fail to create a durable bond between bitumen mats and plastic component walls in household appliances, leading to thermal stress and deformation, and existing solutions require costly pre-treatments or high-temperature processing.
Innovation Solution
A base layer made of butyl or acrylate adhesive is applied to the component walls, which adheres without pre-treatment and can withstand temperature changes, allowing for soundproofing, insulation, and noise reduction without thermal stress, using a 'cold' application method and potentially serving as a standalone insulating layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hot-melt adhesive is used to bond bitumen mat to plastic component wall, then adhesive bond strength is improved, but thermal stress and deformation of plastic component occur
Solution Approach 1:
The patent changes the temperature parameter from high (hot-melt adhesive requiring 120°C or more) to low (cold application at room temperature) by selecting butyl or acrylate adhesive instead of hot-melt adhesive. This parameter change resolves the contradiction by enabling strong adhesion without thermal stress that causes plastic deformation.
Solution Approach 2:
The patent replaces the expensive pre-treatment process (roughening or corona treatment) with a simple cold-application adhesive process. This substitutes a complex, costly manufacturing step with a simpler, more economical approach that achieves the same bonding goal without compromising plastic component integrity.
2Ease of manufacture
If hot-melt adhesive is heated to melting temperature for processing, then adhesive flow and bonding is improved, but thermal stress on plastic component wall increases
Solution Approach 1:
The patent changes the temperature parameter from high (120°C or more for hot-melt adhesive) to low (room temperature for butyl/acrylate adhesive). This eliminates thermal stress on plastic components while maintaining ease of manufacture through simple cold application without heating equipment.
3Strength
If pre-treatment such as roughening or corona treatment is applied to component wall, then adhesion of hot-melt adhesive is improved, but manufacturing costs increase
Solution Approach 1:
The patent replaces expensive pre-treatment processes (roughening or corona treatment) with a simple cold-application adhesive process using butyl or acrylate adhesive. This eliminates complex manufacturing steps and associated costs while achieving durable adhesion to plastic surfaces without modification.
4Object-affected harmful factors
If bitumen mat is bonded to plastic component wall for sound deadening and insulation, then acoustic and thermal performance is improved, but adhesive bond fails under temperature changes
Solution Approach 1:
The patent changes the adhesive type from hot-melt (temperature-sensitive) to butyl or acrylate adhesive (temperature-resistant). This enables the bitumen mat to remain securely bonded during dishwasher operation through frequent temperature changes, maintaining both acoustic insulation and bond reliability.
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 butyl or acrylate adhesive layer ensures strong adhesion to plastic and metal surfaces, prevents thermal deformation, and provides effective soundproofing, insulation, and noise reduction, even as a single layer, enhancing the durability and performance of household appliance components.
Implementation Method 1
a base layer made of a butyl material, in particular butyl adhesive, or an acrylic material, in particular acrylate adhesive, being present on at least one side of the component wall of the component
Data Source
AI summary
The invention relates to a domestic appliance, in particular a domestic dishwasher, comprising a component (4) that has at least one component wall (5), in particular made of plastic, wherein at least one side of the component wall (5) is provided with a base layer (10) made of a butyl material, in particular butyl adhesive, or an acrylic material, in particular acrylate adhesive.