Faqs

Standard LDPE protective film has a density of approximately 0.920–0.925 g/cm³. LLDPE ranges from 0.915 to 0.940 g/cm³, while blended or filled films can exceed 1.2 g/cm³. Density directly determines how many square meters of PE protective film you receive per kilogram purchased—making it the single most important variable to verify in any supplier COA.Why Kilogram Pricing Feels Simple—But Isn’t

Negative thickness tolerance means a film can be manufactured thinner than its stated specification without being considered non-conforming. A 60 µm PE film with −10% tolerance can ship at 54 µm. This reduces protective performance and adhesive consistency while inflating apparent area yield per kilogram, making inferior protective film appear deceptively cost-efficient to buyers pricing by weight.

Yes, for any surface-critical application. Virgin PE provides consistent density, predictable UV aging behavior, and clean adhesive performance. Recycled or blended PE film introduces variable density, potential contaminants, and inconsistent tack—raising the risk of surface damage, adhesive residue, or premature film failure on ACP panels, coated aluminum profiles, and high-gloss surfaces.

For construction or outdoor applications, request a UV aging test report showing at least 200–500 hours of exposure per ASTM D4329 or an equivalent standard, with documented retention of adhesive tack and tensile strength post-exposure. Reputable PE protective film manufacturers including Plashield provide these reports as part of standard product qualification documentation.

The key reason why high-quality temporary PE protective films leave no residue upon removal lies in the multiple optimizations of adhesive formulation, production processes, and quality control.

• Environmentally friendly acrylic pressure-sensitive adhesive layer

This high-quality protective film utilizes a specially developed acrylic pressure-sensitive adhesive with a stable molecular structure and moderate, controllable viscosity. This adhesive forms only a temporary bond with the building surface and will not leave residue due to penetration or chemical reactions.

• Precise Control of Adhesive Layer Thickness and Uniformity

Through advanced coating processes, the adhesive layer thickness is strictly controlled within a reasonable range (typically 3-8μm) and evenly distributed. This prevents excessive adhesion due to excessive thickness or residual adhesive residue caused by excessive adhesive in certain areas, ensuring that the adhesive layer is completely separated from the film during peeling.

• Adhesion Design Matching Substrate Characteristics

Different building material surfaces (e.g., the porosity of stone, the smoothness of metal) require varying adhesive strength. A quality protective film will have a customized adhesion level (e.g., slightly tack, low tack, medium tack) tailored to the application scenario. This ensures it resists peeling during application and can be easily removed without residue within its shelf life.

• Strict Aging Testing and Quality Control

Prior to shipment, each product undergoes environmental simulation testing, including high temperature, UV, and humidity, to verify the adhesive layer’s stability throughout its shelf life (typically 6-12 months). This ensures that the adhesive layer will not harden, become brittle, or migrate, even in outdoor exposure to sunlight or humidity, thus eliminating the risk of adhesive residue.

The key reason why high-quality temporary PE protective films leave no residue upon removal lies in the multiple optimizations of adhesive formulation, production processes, and quality control.

• Environmentally friendly acrylic pressure-sensitive adhesive layer

This high-quality protective film utilizes a specially developed acrylic pressure-sensitive adhesive with a stable molecular structure and moderate, controllable viscosity. This adhesive forms only a temporary bond with the building surface and will not leave residue due to penetration or chemical reactions.

• Precise Control of Adhesive Layer Thickness and Uniformity

Through advanced coating processes, the adhesive layer thickness is strictly controlled within a reasonable range (typically 3-8μm) and evenly distributed. This prevents excessive adhesion due to excessive thickness or residual adhesive residue caused by excessive adhesive in certain areas, ensuring that the adhesive layer is completely separated from the film during peeling.

• Adhesion Design Matching Substrate Characteristics

Different building material surfaces (e.g., the porosity of stone, the smoothness of metal) require varying adhesive strength. A quality protective film will have a customized adhesion level (e.g., slightly tack, low tack, medium tack) tailored to the application scenario. This ensures it resists peeling during application and can be easily removed without residue within its shelf life.

• Strict Aging Testing and Quality Control

Prior to shipment, each product undergoes environmental simulation testing, including high temperature, UV, and humidity, to verify the adhesive layer’s stability throughout its shelf life (typically 6-12 months). This ensures that the adhesive layer will not harden, become brittle, or migrate, even in outdoor exposure to sunlight or humidity, thus eliminating the risk of adhesive residue.