What are PE self-adhesive label stock and PE plastic film labels?
PE self-adhesive label stock, also known as PE plastic film labels, is essentially the same material—just referred to by different names depending on the audience. Below is a detailed introduction:
PE (Polyethylene)
Commercial Names: PE plastic, PE self-adhesive label, PE label stock (polyethylene), PE plastic film label
Abbreviation: PE
Colors: White PE or transparent PE
Molding shrinkage rate: 1.5–3.6%
Molding temperature: 140–220°C

Polyethylene is primarily categorized into three major types:

.Low-density polyethylene (LDPE) produced under high pressure
.High-density polyethylene (HDPE)
.Linear low-density polyethylene (LLDPE)
Film is the primary processed product of PE, followed by sheets, coatings, hollow containers such as bottles, jars, and drums, as well as various injection-molded and blow-molded products, pipes, and insulation/jacketing for wires and cables. PE is widely used in packaging, agriculture, household chemicals, and other fields.

Properties of PE Plastic Film:

Polyethylene (PE) plastic exhibits excellent chemical resistance and electrical insulation properties (especially at high frequencies).
.LDPE is suitable for corrosion-resistant and insulating components.
.HDPE is ideal for film applications.
.Ultra-high-molecular-weight polyethylene (UHMWPE) is used for shock-absorbing, wear-resistant, and transmission parts.
PE film used in self-adhesive label printing typically undergoes no stretching. Surface treatments commonly include corona treatment or coating to improve adhesion.

Disadvantages of PE Plastic Film in Self-Adhesive Label Printing:

.Softness-related issues: Due to its flexibility, processing and labeling require a minimum thickness (typically 80–120 μm).
.Poor transparency.
.Prone to surface scratching, with relatively low tensile strength, tear resistance, heat resistance, and durability—making it best suited for indoor use.

Advantages of PE Plastic Film in Self-Adhesive Label Printing:

PE is a rapidly growing eco-friendly label material. Its excellent flexibility makes it ideal for curved surfaces, and its labels resist edge wrinkling. Many cosmetic and shampoo bottles are made from PE; using PE labels on PE containers greatly facilitates recycling. Transparent PE offers a unique soft, hazy appearance that gives printed labels a premium, sophisticated look.
However, because polyethylene molecules lack polar groups and exhibit high crystallinity and low surface energy, PE films have poor printability and weak adhesion to inks and adhesives. Therefore, surface treatment (e.g., corona or coating) is essential before printing or laminating.

Applications of PE Plastic Film in Self-Adhesive Label Printing:

PE film labels are suitable for products requiring high resistance to water, oil, and chemicals. Self-adhesive label manufacturers commonly use this material for cosmetics, shampoos, detergents, and other household chemical products that demand moisture resistance and durability during use. Thanks to its exceptional flexibility, PE is especially well-suited for labeling flexible plastic bags. It is also an ideal alternative to PVC labels in applications where environmental regulations prohibit PVC use.

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