Waste Limestone Powder Filler in Asphalt Damping Sheets

Solution Overview

Problem

The disposal of waste limestone powder generated from paint workshops through incineration leads to energy consumption and environmental pollution, and there is a need to utilize this waste as a resource in the automobile manufacturing process.

Innovation Solution

The waste limestone powder is used as a filler in the production of environmentally friendly asphalt damping sheets, which are used in automobile manufacturing to reduce noise and vibration, and the process involves specific proportions of limestone powder, asphalt pitches, non-metallic minerals, and PET short fibers, along with an adhesive layer, to create a durable and effective damping material.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If waste limestone powder is disposed of by incineration, then the disposal process is simple, but it consumes a lot of energy and causes environmental pollution

Engineering Contradiction:

Improvedisposal process simplicityVSAvoidenergy consumption

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The patent converts the harmful waste limestone powder into a beneficial filler material for asphalt damping sheets. The waste limestone powder containing paint slag is processed and mixed with asphalt, pitch, and other materials to create a functional damping sheet product, thereby eliminating the need for energy-intensive incineration and converting a disposal problem into a resource utilization solution.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent changes the state and application parameters of waste limestone powder from a disposable waste material to a functional filler component. By controlling the particle size, mixing ratios, and processing conditions, the waste material is transformed into a valuable ingredient that provides both damping performance and cost advantages in the final product.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If waste limestone powder is disposed of by incineration, then the disposal is straightforward, but it causes secondary pollution

Engineering Contradiction:

Improvedisposal process simplicityVSAvoidenvironmental pollution

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The patent converts the harmful waste limestone powder into a beneficial filler material for asphalt damping sheets. The waste limestone powder containing paint slag is processed and mixed with asphalt, pitch, and other materials to create a functional damping sheet product, thereby eliminating the need for energy-intensive incineration and converting a disposal problem into a resource utilization solution.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

Instead of discarding the waste limestone powder through incineration, the patent recovers and reuses it as a filler material in asphalt damping sheets. The waste material is collected, processed, and integrated into a new product, achieving both waste reduction and resource recovery simultaneously.

Inventive Principle:

Principle #34Discarding and recovering

3Loss of substance

If waste limestone powder is reused in automobile manufacturing, then resource utilization is improved, but the processing and integration into existing manufacturing processes becomes more complex

Engineering Contradiction:

Improvewaste material utilizationVSAvoidprocessing complexity

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

The patent changes the state and application parameters of waste limestone powder from a disposable waste material to a functional filler component. By controlling the particle size, mixing ratios, and processing conditions, the waste material is transformed into a valuable ingredient that provides both damping performance and cost advantages in the final product.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite material system where waste limestone powder is combined with asphalt, pitch, and other materials to form asphalt damping sheets. This composite approach allows the waste filler to be integrated into a multi-component system that leverages the strengths of each material while masking potential weaknesses, thereby simplifying the overall processing requirements.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS9663623B2Resource utilization of paint slag-containing waste limestone powder and treatment process thereof

Publication Date: 2017.05.30 SHANGHAI YIKE GREEN ENG

AI summary

An asphalt damping sheet, which comprises the following components in indicated amounts based on the total mass of the asphalt damping sheet: a paint slag-containing waste limestone powder 20-50 parts; soft pitch 1-5 parts; hard pitch 11-15 parts; a non-metallic mineral 29-59 parts; PET short fiber 0.1-1.5 parts; and said non-metallic mineral is selected from the group consisting of quartz sand, pottery clay and mica powder. The technical process in the invention uses the paint slag-containing waste limestone powder generated in dry separation process of overspray adopted by vehicle manufacturer paint shops as filler in the asphalt damping sheets, such asphalt damping sheets can be used in the field of machine manufacturing such as automobiles and ships, and also can be used in the field of building waterproof materials, and the goal of resource recycling is achieved.