Table of Contents

1. Introduction

2. Core Characteristics of PE Protective Film

3. Adhesion Level Classification and Selection Principles

4. Temperature Range Adaptability of PE Protective Film

5. PE Protective Film Application in Multi-Industry Protection

6. PE Protective Film Selection Guide

7. Performance Comparison Table of PE Protective Film

8. Conclusion

9. Frequently Asked Questions (FAQs)

1. Introduction

PE protective film is a versatile surface protection material, widely used in multi-industry protection scenarios. From aluminum composite panels in construction to high-end furniture in home decoration, it plays a crucial role in preventing scratches, pollution, and oxidation during production, transportation, and installation.

The global PE protective film market is growing steadily. According to industry reports, the market size reached 186.7 billion yuan in 2024, with a year-on-year growth of 9.3%. Among them, the construction and furniture industries account for 32% and 18% of the consumption respectively.

Adhesion level and temperature range adaptability are the two core indicators determining the protection effect of PE protective film. Choosing the right adhesion level and matching the temperature range with the application scenario can maximize the protection effect and avoid problems such as residue or film detachment.

Many manufacturers often make mistakes in selection, leading to surface damage of products. This guide focuses on the selection of adhesion levels and temperature adaptation, helping professionals in various industries make scientific choices.

2. Core Characteristics of PE Protective Film

2.1 Basic Material and Advantages

PE protective film is made of polyethylene (PE) as the base material, coated with pressure-sensitive adhesive on the surface. It has excellent flexibility, transparency, and chemical stability.

Its core advantages include good adhesion, easy pasting and tearing, no residue after removal, and low cost. These characteristics make it suitable for multi-industry protection needs.

Common PE materials include LDPE (low-density polyethylene) and LLDPE (linear low-density polyethylene). LDPE has better flexibility, while LLDPE has higher tensile strength and puncture resistance.

2.2 Key Indicators Affecting Selection

Adhesion level and temperature range adaptability are the most important indicators for PE protective film selection.

Adhesion level determines the bonding force between the film and the protected surface. Too high adhesion will leave residue, while too low adhesion will cause the film to fall off easily.

Temperature range adaptability refers to the stability of the film in different temperature environments. Extreme high or low temperatures will affect the adhesion and service life of the film.

3. Adhesion Level Classification and Selection Principles

3.1 Adhesion Level Classification

PE protective film is usually divided into four adhesion levels according to peel strength: super low adhesion, low adhesion, medium adhesion, and high adhesion. The unit is g/25mm, which is the peel force required for a 25mm wide film.

Super low adhesion (5-30g/25mm): Suitable for smooth and high-gloss surfaces, easy to paste and tear without residue.

Low adhesion (30-80g/25mm): A universal type, with stable adhesion and good re-peeling performance, suitable for most smooth surfaces.

Medium adhesion (80-200g/25mm): Strong adhesion, suitable for rough surfaces or long-term protection scenarios.

High adhesion (above 200g/25mm): Suitable for difficult-to-adhere surfaces such as rough aluminum plates and coated stainless steel panels.

3.2 Core Selection Principles

The selection of adhesion level is mainly based on the surface roughness and material of the protected product.

Smooth surfaces (such as high-gloss furniture, mirror aluminum plates) should choose low or super low adhesion to avoid residue and surface damage.

Rough surfaces (such as anodized aluminum plates, frosted furniture) need medium or high adhesion to ensure stable bonding.

In addition, the storage and transportation time should also be considered. Longer time requires slightly higher adhesion to prevent film detachment.

4. Temperature Range Adaptability of PE Protective Film

4.1 Temperature Range Classification

According to the temperature adaptation range, PE protective film can be divided into conventional type, high-temperature resistant type, and low-temperature resistant type.

Conventional type: Adaptable to -10℃ to 60℃, suitable for normal temperature environments such as indoor furniture and ordinary aluminum plate storage.

High-temperature resistant type: Adaptable to -10℃ to 80℃ (short-term up to 120℃), suitable for high-temperature processing scenarios such as aluminum plate baking.

Low-temperature resistant type: Adaptable to -30℃ to 50℃, suitable for cold chain transportation or low-temperature storage environments.

4.2 Adaptation Principles for Different Scenarios

Outdoor applications (such as building aluminum composite panels) need to choose high-temperature resistant PE protective film to withstand direct sunlight and high temperatures in summer.

Indoor applications (such as high-end furniture) can use conventional PE protective film, as the temperature is relatively stable.

Cold chain transportation or low-temperature storage scenarios require low-temperature resistant PE protective film to avoid film embrittlement and cracking.

5. PE Protective Film Application in Multi-Industry Protection

5.1 Aluminum Plate Protection (Including Aluminum Composite Panels)

Aluminum plates and aluminum composite panels are widely used in construction and decoration. Their surfaces are prone to scratches and oxidation, so PE protective film protection is essential.

For smooth aluminum plates and aluminum composite panels, medium adhesion (80-120g/25mm) PE protective film is suitable, with a temperature range of -20℃ to 70℃ to adapt to outdoor environments.

For rough anodized aluminum plates, high adhesion (150-200g/25mm) PE protective film is needed to ensure stable bonding.

Data shows that 85% of aluminum plate manufacturers use PE protective film for surface protection, reducing product scrap rate by 30%以上.

5.2 Furniture Protection

Furniture protection covers high-end solid wood furniture, panel furniture, and painted furniture. The surface is delicate and prone to scratches, so the selection of PE protective film is very critical.

High-gloss painted furniture and solid wood furniture should choose low adhesion (30-50g/25mm) PE protective film to avoid residue and damage to the paint surface.

Panel furniture and frosted surface furniture can use medium adhesion (50-80g/25mm) PE protective film, which balances adhesion and residue-free performance.

The furniture industry's demand for PE protective film is growing at a rate of 14.5% per year, with low-adhesion and high-transparency products being the mainstream.

6. PE Protective Film Selection Guide

6.1 Step-by-Step Selection Process

Step 1: Confirm the protected product surface (smooth/rough, material type) to determine the required adhesion level.

Step 2: Analyze the use environment (indoor/outdoor, temperature range) to select the appropriate temperature-resistant type.

Step 3: Consider the storage and transportation time to adjust the adhesion level appropriately.

Step 4: Conduct a small-scale test to check whether there is residue, detachment, or surface damage after pasting and tearing.

6.2 Common Selection Mistakes and Avoidance Methods

Mistake 1: Blindly choosing high adhesion, leading to residue and surface damage. Solution: Select according to surface roughness, not pursue high adhesion blindly.

Mistake 2: Ignoring temperature range adaptability, resulting in film embrittlement or detachment in extreme temperatures. Solution: Confirm the use environment temperature before selection.

Mistake 3: Choosing low-cost and low-quality PE protective film, leading to poor protection effect. Solution: Prioritize products with stable adhesion and qualified temperature adaptability.

7. Performance Comparison Table of PE Protective Film

The following table compares the key performance of PE protective films with different adhesion levels, providing a clear reference for selection in multi-industry protection:

8. Conclusion

PE protective film plays an irreplaceable role in multi-industry protection. Its adhesion level and temperature range adaptability directly determine the protection effect and product quality.

For aluminum plate protection, the adhesion level should be selected according to the surface roughness, and the temperature range should be adapted to the outdoor or processing environment.

For furniture protection, low or medium adhesion should be preferred to avoid surface damage and residue.

Following the selection guide and avoiding common mistakes can help enterprises and professionals select the most suitable PE protective film, reduce costs, and improve product qualification rate.

With the development of multi-industry upgrading, the demand for high-performance PE protective film (such as low-residue, wide temperature adaptation) will continue to grow, promoting the continuous innovation of PE protective film technology.

9. Frequently Asked Questions (FAQs)

Q1: What adhesion level should I choose for aluminum composite panel protection?

A1: For smooth aluminum composite panels, medium adhesion (80-120g/25mm) is recommended. For rough or anodized aluminum composite panels, high adhesion (150-200g/25mm) is better. The temperature range should choose -20℃ to 70℃ to adapt to outdoor environments.

Q2: Will low-adhesion PE protective film fall off easily during furniture transportation?

A2: No, it won’t. Low-adhesion PE protective film (30-80g/25mm) has stable adhesion, which can meet the needs of furniture transportation. It will not fall off easily under normal transportation vibration, and can be torn off without residue.

Q3: What is the difference between conventional and high-temperature resistant PE protective film?

A3: The conventional type is suitable for -10℃ to 60℃, suitable for indoor and normal temperature storage. The high-temperature resistant type can withstand -10℃ to 80℃ (short-term 120℃), suitable for high-temperature processing scenarios such as aluminum plate baking and outdoor high-temperature environments.

Q4: How to avoid residue when using PE protective film?

A4: First, choose the appropriate adhesion level according to the surface smoothness—smooth surfaces use low or super low adhesion. Second, avoid pasting the film in high-temperature environments, and tear it off in time after use (within 3-6 months is recommended).

Q5: What is the service life of PE protective film in outdoor aluminum plate protection?

A5: High-temperature resistant PE protective film with medium adhesion can be used outdoors for 6-12 months. It is recommended to replace it in time after 6 months to avoid film aging and residue.