This article is provided by Jinan Saicheng Electronic Technology Co., Ltd

The aluminum foil composite film weighing method water vapor transmission rate tester plays an irreplaceable role in ensuring product quality, optimizing packaging design, controlling costs, meeting regulatory requirements, and enhancing market competitiveness. Aluminum foil composite film is commonly used to package humidity sensitive products (such as pharmaceuticals, food, and electronic products), and its water vapor barrier performance directly affects product stability. For pharmaceutical packaging, according to the requirements of the Chinese Pharmacopoeia, the water vapor transmission rate of medicinal aluminum foil should be ≤ 0.5g/(m ² · 24h). If the barrier properties are insufficient, the drug may oxidize, deteriorate, or become ineffective due to moisture absorption. For example, tablets may clump when wet, and biologics may lose their activity. Food packaging: Products such as milk powder and coffee that are prone to moisture absorption must be strictly moisture-proof. If the moisture permeability of the packaging is too high, the food may clump and mold, shortening the shelf life.

1、 Equipment Introduction

Based on the cup method testing principle, it is a professional water vapor transmission rate tester for flat materials and containers. It is suitable for measuring the water vapor transmission rate and coefficient of various materials such as plastic films, composite films, bags, bottles, medical and building materials fields to control and adjust the technical indicators of materials and meet the different needs of product applications.

2、 Application scope

The film is suitable for testing the water vapor transmission rate of various plastic films, plastic composite films, paper plastic composite films, geomembranes, co extruded films, aluminum plated films, aluminum foil, aluminum foil composite films, waterproof and breathable films and other film like materials

Sheet materials are suitable for testing the water vapor transmission rate of various engineering plastics, rubber, building materials (waterproof materials for construction), insulation materials, and other sheet materials, such as PP sheets, PVC sheets, PVDC sheets, nylon sheets, etc

Paper and cardboard are suitable for testing the water vapor transmission rate of paper and cardboard

Textiles and non-woven fabrics are suitable for testing the water vapor transmission rate of materials such as textiles and non-woven fabrics

Containers suitable for plastic bags, paper boxes, plastic bottles, infusion bags, infusion bottles, and other containers

三、重要性

Electronic product packaging: Precision components such as chips and displays may experience short circuits and rust when exposed to moisture, which can affect their service life.

The weighing method tester can quantitatively evaluate the effect of different materials and structures on moisture permeability

The impact of rate provides data support for packaging design:

Material selection: Compare the moisture permeability of single-layer aluminum foil and aluminum-plastic composite film, and choose a more cost-effective solution. For example, a food company found through testing that even after reducing the thickness of aluminum foil from 20 μ m to 15 μ m, the moisture permeability still meets the requirements, saving material costs by 15% annually.

Structural improvement: Optimize the coating process or number of layers of composite films. For example, adding PVDC coating can reduce moisture permeability by 50% and extend product shelf life.

Lightweight design: When developing lightweight packaging, it is necessary to verify whether the barrier performance meets the standards through testing, in order to avoid quality risks caused by excessive thinning.