In today’s fast-paced industrial and commercial world, ensuring product safety, longevity and compliance is a no-no. At the heart of achieving these goals lies one key component: the sealing membrane.
From food packaging to medical device manufacturing, this versatile material is indispensable in a wide range of industries. In this guide, we will explore what sealing membranes are, their main functions, types and applications to help you make informed decisions based on your business needs.
What is a sealing film?
Sealing film is the thin, flexible material designed to create airtight, watertight airtight containers that are packaged or sealed at the mouth of a cup. It is usually made of polymers such as PE, PP, PET or aluminum foil composite, which is both durable and adaptable. Its core features include:Sealing film is the thin, flexible material designed to create airtight, watertight airtight containers that are packaged or sealed at the mouth of a cup. It is usually made of polymers such as PE, PP, PET or aluminum foil composite, which is both durable and adaptable. Its core features include: Sealing film is the thin, flexible material designed to create airtight, watertight airtight containers that are packaged or sealed at the mouth of a cup. It is usually made of polymers such as PE, PP, PET or aluminum foil composite, which is both durable and adaptable. Its core features include:
– High barrier performance : blocking water, oxygen and pollutants.
– Heat resistance : Can withstand extreme temperatures during sealing.
– Customizable thickness : Range from micron to millimetre tailored protection.
Whether used to preserve perishable goods or protect sensitive electronics, sealing membranes ensure reliability every step of the way.
Main functions of sealing film
Why does industry rely on sealing film? How it creates value:
1. Protection and preservation
– Extend shelf life by preventing oxidation and microbial growth (such as vacuum-sealed food packaging).
– Protect the product from physical damage during transportation.
2. Prevent changes
– Integrated visible seals to prevent unauthorized access, critical for pharmaceuticals and high-value goods.
3. Multiple sealing methods
– Supports heat sealing, electromagnetic induction or binder-based methods for a variety of scenarios.
4. Transparency and HD printing
– High definition film displays products while allowing custom printing (logos, descriptions).
By addressing issues such as corruption, contamination and counterfeiting, sealing membranes improve safety and consumer trust.
Type of sealing film
Choosing the right sealing film depends on material properties and industry requirements:
By material
1. Aluminum foil composite sealing film
– Advantages : Excellent barrier performance, suitable for all kinds of food, medical equipment or moisture sensitive electronic products. Widely used, sealing effect is good
2.PE composite film (transparent or PE aluminum foil composite film)
– Advantages : cost-effective, flexible, suitable for PE material cups, widely used in food packaging and sealing
3.PP composite film (transparent or PP aluminum foil composite film)
– Advantages : Heat resistant (up to 120°C+), ideal for microwave safe food containers.
4. Biodegradable sealing film
– Advantages : An environmentally friendly alternative made from polylactic acid or starch-based polymers, in line with Sustainable Development Goals.
By application
– Food grade : QS food packaging production license certification and ISO9001 2015 quality system certification, products meet the requirements of ROHS, Reach regulations
– Medical Grade : Sterilizable and ISO 13485 certified for aseptic device packaging.
– Industrial Grade : Designed for heavy duty use in the automotive or construction industries.
Cross-industry applications
Sealing film Suitable for different industries, high precision:
– Dining
Cups and bottles sealed, snack bags sealed, vacuum sealed meat packaging.
– Medicine
Tablet blister packaging, sterile surgical instrument packaging and diagnostic kit sealing.
-Electronic
Circuit board moisture-proof packaging, lithium battery insulation.
How to choose the right sealing film?
Follow these expert tips to optimize your choices:
1. Assess environmental needs
– Consider temperature range, exposure to UV/chemicals and storage conditions.
2. Verify compliance
– Ensure certification in regulated industries such as food or healthcare.
3. Give priority to customization
Work with suppliers to provide tailored solutions.
4. Balance cost and performance
– Although the cost of the aluminum foil film will be higher, the sealing effect is better
Why choose us?
Lingying is a technology enterprise focusing on flexible packaging aluminum-plastic composite film, integrating research and development, design, production and sales service.
It has specialized in customizing flexible packaging aluminum-plastic composite film for 20 years, and has a number of automatic production lines to meet the various requirements of different customers, professional inspection equipment and clean workshop.
The company is committed to the development, production and sales of various types of flexible packaging, functional film polymer composite materials, to produce food, daily chemical packaging bags, automatic packaging film, and is committed to biotechnology and other functional extension of the composite film.
The company has passed the QS food packaging production license certification and ISO9001 2015 quality system certification, and the products meet the requirements of ROHS and Reach regulations, which reflects the company’s attention to product quality.13485 medical device certification.
From maintaining the freshness of food to ensuring the sterility of medical devices, the sealing film is the silent and important guardian of product quality.
Understanding their capabilities, types, and applications allows businesses to optimize packaging efficiency and compliance.
Ready to upgrade your packaging strategy?
Contact our team for today’s request – contact us for a free sample or to discuss a custom sealing film solution.
Let us help you succeed in every package!
《Effects of Material and Sealing Process Parameters on the Tightness of the Layer Transition Area of Pouch Packaging Made From Functional Papers》
