Polymer Fill Production via Carding and Compression

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Solution Overview

Problem

Existing methods for producing nonwoven fiber batts, such as the wet and dry methods, face challenges in achieving high production speeds and uniformity while requiring power-intensive drying processes or relying on energy-consuming bonding agents.

Innovation Solution

A method involving blending polymer fibers, orienting them, heating, compressing, and cooling to form a low melt compressed polymer fill, using a process that includes carding machines, an oven for heat-fusing, and a compression system with steel rollers, followed by cooling with a wire mesh conveyor belt and air flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the wet method is used to produce nonwoven fiber batt, then high production speeds and uniformity of web are achieved, but very power consuming subsequent drying processes are required

Engineering Contradiction:

Improveproduction speedVSAvoidenergy consumption for drying

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The invention extracts and eliminates the drying step from the nonwoven fabric production process by using a dry carding method that forms fiber webs without requiring subsequent drying operations, thereby maintaining high productivity while removing the energy-intensive drying requirement

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention replaces the thermal drying process with a mechanical fiber arrangement system where carding machines create uniformly distributed fiber webs that dry naturally or require minimal drying, substituting thermal energy processing with mechanical fiber positioning

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Use of energy by moving object

If the dry method is used to produce nonwoven fiber batt, then power consuming drying processes are avoided, but bonding agents must be applied and melted requiring heating units

Engineering Contradiction:

Improveenergy consumption for dryingVSAvoidcomplexity of bonding agent application system

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The invention extracts and eliminates the bonding agent application step from the dry carding process by creating self-bonding fiber webs through mechanical interlocking during carding, removing the need for separate bonding agent application and melting equipment

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The fiber webs are designed to bond to themselves through the mechanical action of carding and natural fiber interlocking, making the system self-sufficient without requiring external bonding agents or additional heating units for bonding

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If traditional carding or garnetting methods are used, then nonwoven webs are produced with fibers oriented in machine direction or randomized distribution, but control over fiber orientation is limited

Engineering Contradiction:

Improvefiber orientation controlVSAvoidcomplexity of fiber orientation system

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention introduces dynamic control of fiber orientation by allowing the carding machines and fiber arrangement system to be adjusted during operation to achieve different orientation patterns (machine direction, cross orientation, or randomized) without requiring completely different equipment configurations

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The carding and fiber arrangement system is designed to perform multiple functions: it can produce fibers in machine direction orientation, cross orientation, or randomized distribution by adjusting operational parameters, making a single system versatile for different product requirements

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 method enables the production of a polymer fill with controlled orientation and thickness, reducing energy consumption and improving production efficiency by avoiding the need for high-energy drying processes and allowing for customizable fiber distribution.

Implementation Method 1

heating the polymer fill, compressing the polymer fill

Methodology Applied

Scientific EffectMelting: Melting

Implementation Method 2

cooling the polymer fill

Methodology Applied

Scientific EffectFreezing: Freezing

Data Source

PatentUS7610659B2Apparatus and method for making a polymer fill

Publication Date: 2009.11.03 ARDEN

AI summary

A process for manufacturing a polymer fill, the method comprising the steps of blending polymer fibers to form a polymer fill, depositing the polymer fill onto a surface, orientating the polymer fibers in a desired orientation, heating the polymer fill, compressing the polymer fill and cooling the polymer fill. The surface carries the polymer fill from the blending step through the heating step, and wherein the polymer fill enters the compression step independent of the surface.