Laminated Bag Structure for Bulk Pharmaceutical Packaging

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Solution Overview

Problem

Conventional packaging for bulk pharmaceuticals consumes significant plastic and paper, leading to environmental issues and inefficient use of space during transport and storage, while existing packaging materials are not adequately suited for sensitive pharmaceuticals.

Innovation Solution

A laminated bag structure comprising multiple layers of polyester, metal (such as aluminum or tin), and nylon, with an inner polyethylene layer, providing protection against moisture and mechanical damage, and optionally including a one-way valve for gas management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional box-type packaging (HDPE drums or corrugated boxes) is used for bulk pharmaceuticals, then mechanical protection and moisture resistance are provided, but plastic and paper consumption increases significantly and storage/transport space efficiency decreases

Engineering Contradiction:

Improveprotection against moisture and mechanical damageVSAvoidplastic and paper consumption

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent replaces rigid box-type packaging with flexible laminated bags comprising multiple thin film layers (polyester, metal foil, nylon, polyethylene). These flexible structures provide equivalent moisture and mechanical protection while consuming significantly less plastic and paper material, directly resolving the contradiction between reliability and material consumption.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The invention uses composite laminated structures combining different materials (polyester layer, metal foil layer, nylon layer, polyethylene layer) each providing specific protective functions. This composite approach achieves superior moisture resistance and mechanical strength with reduced overall material consumption compared to conventional single-material rigid packaging.

Inventive Principle:

Principle #40Composite materials

2Reliability

If conventional box-type packaging is used for bulk pharmaceuticals, then protection against moisture and mechanical damage is achieved, but the space occupied during transport and storage is much higher than necessary

Engineering Contradiction:

Improveprotection against moisture and mechanical damageVSAvoidstorage and transportation space

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The flexible laminated bags can be collapsed and compressed to minimal volume when empty or partially filled, unlike rigid boxes that maintain fixed volume. This dramatically reduces storage and transportation space requirements while the laminated structure provides equivalent moisture and mechanical protection.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The flexible packaging structure allows inner bags to be nested within outer bags, and empty packaging to be compressed into minimal space, optimizing space utilization during multi-stage transport and storage operations.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Ease of manufacture

If single-layer packaging is used, then manufacturing simplicity is maintained, but protection against moisture and mechanical damage is insufficient for sensitive pharmaceuticals

Engineering Contradiction:

Improvepackaging structure simplicityVSAvoidprotection against moisture and mechanical damage

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent employs a multi-layer composite structure where each layer serves a specific function: polyester provides structural integrity, metal foil provides moisture and light barrier, nylon provides mechanical strength and puncture resistance, and polyethylene provides sealability and chemical resistance. This composite approach achieves superior protection while remaining manufacturable through established lamination processes.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The packaging is divided into functional segments (different layers) where each layer addresses specific protection requirements. This segmentation allows optimization of each layer's properties for its specific function while maintaining overall manufacturing efficiency through continuous lamination processes.

Inventive Principle:

Principle #1Segmentation

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 laminated bag structure reduces plastic and paper consumption, minimizes storage and transportation space, and maintains the quality and stability of active pharmaceutical ingredients, achieving equivalent or improved results compared to traditional packaging methods.

Implementation Method 1

a metal layer completely embracing said inner polyethylene layer

Methodology Applied

Scientific EffectBarrier property:

Implementation Method 2

The present invention describes laminate bags filled with active pharmaceutical ingredients

Methodology Applied

Scientific EffectLamination: Lamination

Implementation Method 3

an inner polyethylene layer completely embracing said active pharmaceutical ingredient

Methodology Applied

Scientific EffectHydrophobicity: Hydrophobe

Data Source

PatentEP3094492B1Laminated bag for pharmaceuticals

Publication Date: 2019.05.15 CENTRIENT PHARMA NETHERLANDS BV

Figure 1A~1B

AI summary

The present invention relates to a laminated bag containing an active pharmaceutical ingredient,a method for packaging an active pharmaceutical ingredient and the use of a laminated bag for packaging an active pharmaceutical ingredient.