Composite Paint Roller Cover with Polypropylene Adhesive
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Solution Overview
Problem
Existing paint roller manufacturing processes face challenges in producing high-quality, continuous paint rollers with consistent properties, as they often rely on adhesive bonding of separate materials which can be inconsistent and prone to defects such as being out of round at the ends.
Innovation Solution
A method and apparatus for forming a composite cover material using a continuous supply of pile material with a polypropylene adhesive layer, which is applied and integrated to create a stiffer, non-porous backing, allowing for the production of laminated paint rollers with reduced hoop force and improved roundness, using a combination of adhesive application, environmental control, and cutting processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adhesive bonding of separate materials is used in paint roller manufacturing, then assembly flexibility is improved, but manufacturing precision deteriorates due to inconsistency and defects such as being out of round at the ends
Solution Approach 1:
The patent merges the adhesive layer and cover material into a single composite structure where the adhesive is applied to the inner strip and then the cover material is formed around it, creating an integrated laminated roller that eliminates bonding inconsistencies while maintaining assembly flexibility
Solution Approach 2:
The patent uses composite materials by combining an inner strip, adhesive layer, and cover material into a laminated structure, where each layer contributes specific properties and the composite nature ensures consistent roundness and structural integrity
2Device complexity
If traditional manufacturing processes are used, then process simplicity is maintained, but reliability deteriorates due to inconsistent adhesive bonding and defects
Solution Approach 1:
The patent implements a continuous manufacturing process where the adhesive is applied and the cover material is formed in a continuous operation, ensuring consistent bonding quality and eliminating defects associated with discrete bonding steps while maintaining process efficiency
Solution Approach 2:
The patent changes the physical state and properties of materials during processing, including heating the adhesive to appropriate bonding temperature and controlling the formation parameters of the cover material, thereby ensuring reliable bonding without excessive process complexity
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
This approach results in paint rollers with enhanced rigidity, reduced defects, and consistent quality, as the composite cover material provides better fiber locking and adhesive integration, leading to more reliable and durable paint rollers.
Implementation Method 1
an adhesive layer is applied to the fabric backing of the material to form a composite sheet material
Implementation Method 2
the composite cover material provides better fiber locking and adhesive integration
Data Source
AI summary
Described is a method of making a non-porous composite cover material formed of a pile material and an adhesive layer made from polypropylene or predominantly from polypropylene. A width of the pile material is advanced, and a layer of adhesive is applied thereupon. The adhesive is allowed to set, and the width of material is longitudinally cut into strips of composite cover material. Laminated paint rollers are thereafter made by helically one or two strips of polypropylene or strips made predominantly of polypropylene about a mandrel and applying a layer of adhesive made from polypropylene or predominantly from polypropylene on the strip or strips, and applying a non-porous composite cover material. A compressive force is applied upon the outer surface of the composite cover material to urge the composite cover material, the layer of adhesive and strip or strips of thermoplastic material together against the mandrel, thereby laminating the inner surface of the composite cover material and the strip or strips together and forming a continuous product that can be cut and finished to make paint rollers.