Degradable Extruded Netting via Polymer Blend

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Solution Overview

Problem

Current extruded plastic netting manufacturing processes rely on non-biodegradable materials, which pose environmental concerns and lack mechanical strength when using degradable materials.

Innovation Solution

A degradable extruded netting is developed using a polymeric blend comprising polylactic acid, polybutylene, a polylactic acid-polybutylene compatibilizer, and a degradation additive, which enhances mechanical strength and biodegradability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If degradable materials are used to manufacture extruded netting, then environmental friendliness is improved, but mechanical strength deteriorates

Engineering Contradiction:

Improveenvironmental impactVSAvoidmechanical strength

Core Design Contradiction:

Object-affected harmful factorsVSStrength

Solution Approach 1:

The patent applies composite materials by creating a polymer blend consisting of multiple degradable components: polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), and a compatibilizer. This composite approach allows the material to maintain mechanical strength while retaining biodegradability, resolving the contradiction between environmental friendliness and mechanical performance.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent employs parameter changes by carefully controlling the composition ratios of the polymer blend components (PLA, PBAT, and compatibilizer) and adjusting processing parameters during extrusion. These parameter optimizations enable the degradable material to achieve acceptable mechanical strength for netting applications while maintaining its biodegradable nature.

Inventive Principle:

Principle #35Parameter changes

2Loss of substance

If degradable materials are used to manufacture extruded netting, then waste production is reduced, but mechanical strength deteriorates

Engineering Contradiction:

Improvewaste productionVSAvoidmechanical strength

Core Design Contradiction:

Loss of substanceVSStrength

Solution Approach 1:

The patent uses composite materials through a multi-component polymer blend (PLA + PBAT + compatibilizer) that synergistically combines the advantages of each component. This composite structure provides sufficient mechanical strength for netting applications while ensuring the entire material system is biodegradable, thus reducing waste without sacrificing strength.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent applies parameter changes by optimizing the specific composition ratios of the blend components and processing conditions. By adjusting these parameters, the material achieves the necessary mechanical properties for structural netting applications while maintaining complete biodegradability, thereby reducing waste production effectively.

Inventive Principle:

Principle #35Parameter changes

3Strength

If non-biodegradable materials are used for extruded netting, then mechanical strength is improved, but environmental harm increases

Engineering Contradiction:

Improvemechanical strengthVSAvoidenvironmental harm

Core Design Contradiction:

StrengthVSObject-generated harmful factors

Solution Approach 1:

The patent resolves this contradiction by using composite materials - a polymer blend of PLA, PBAT, and compatibilizer - that collectively provide mechanical strength comparable to conventional materials while ensuring complete biodegradability. This composite approach eliminates environmental harm through proper material selection rather than relying on non-biodegradable components.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent applies parameter changes by optimizing the composition ratios and processing conditions of the degradable polymer blend. These parameter adjustments enable the material to achieve sufficient mechanical strength for netting applications, eliminating the need for non-biodegradable materials and thereby preventing environmental harm.

Inventive Principle:

Principle #35Parameter changes

4Duration of action of stationary object

If degradable materials are used for extruded netting, then biodegradability is improved, but mechanical strength deteriorates

Engineering Contradiction:

ImprovebiodegradabilityVSAvoidmechanical strength

Core Design Contradiction:

Duration of action of stationary objectVSStrength

Solution Approach 1:

The patent applies composite materials by formulating a polymer blend where PLA provides biodegradability, PBAT enhances mechanical strength and flexibility, and the compatibilizer ensures proper mixing and interfacial adhesion. This composite system achieves both high biodegradability and acceptable mechanical strength simultaneously.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent employs parameter changes by optimizing the composition ratios of the blend components and controlling extrusion processing parameters. These optimizations allow the degradable material to achieve the necessary mechanical strength for structural applications while maintaining complete biodegradability, resolving the contradiction between these two properties.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250075380A1Polymer blend compositions and degradable extruded netting made therefrom

Publication Date: 2025.03.06 DELSTAR TECHNOLOGIES INC

AI summary

Degradable extruded nettings include a plurality of interconnected strands, at least some of the strands being made from a polymeric blend, the polymeric blend including polylactic acid polymer composition, polybutylene adipate terephthalate polymer composition, polylactic acid-polybutylene compatibilizer, and a degradation additive, the degradation additive including a degrader in a carrier resin.