How to Choose Between Pressure-sensitive Labels, Shrink Sleeves, and In-Mold Labels?
In product packaging, labels play a crucial role in conveying product information and shaping brand image. Among various types of labels, pressure-sensitive labels, shrink sleeves, and in-mold labels are three common ones. This article will provide insights into these labels from multiple perspectives, including materials, advantages, and suitable containers, to help you make an informed decision.

01 Self-adhesive Labels

Pressure-sensitive labels are self-adhesive labels consisting of three parts: face material, adhesive, and liner. They can be easily affixed to various surfaces without the need for additional glue or tape. Due to their convenience and strong adhesion, pressure-sensitive labels are widely used across many industries.

Common Materials for Self-adhesive Labels

Self-adhesive labels come in a wide range of materials, each with its own characteristics to meet different product needs.
• Paper-based materials: Such as coated paper and specialty papers, which are suitable for general product packaging. They are cost-effective and offer good printing quality.
• Film-based materials: Including PET, PE, PVC, and other film materials, which have properties like water resistance, moisture resistance, and abrasion resistance. They are ideal for products with higher environmental requirements, such as food and pharmaceuticals.

Advantages of Self-adhesive Labels

•  Can be applied to a variety of surfaces, including paper, plastic, metal, and glass.
•  Easy to apply, either by hand or using label applicators for large quantities.
•  Available in multiple material options to meet different design requirements.
•  High-precision printing with vibrant colors, fine patterns, and rich details.
•  Diverse processing techniques, such as gold plating, cold stamping, UV embossing, embossing, 3D stamping, lamination, and varnishing.

Types of Containers Suitable for Self-adhesive Labels

•  Flat containers: Such as paper boxes, plastic boxes, glass bottles, and metal cans, where pressure-sensitive labels can be easily affixed to flat surfaces.
•  Regular curved containers: Like cylindrical bottles and cans, where self-adhesive labels can also adhere well, but the curvature of the container and the flexibility of the label need to be considered.

02 Shrink Sleeves

Shrink sleeves are heat-shrinkable film labels that are made into a tubular shape. They are placed over the product container and, when heated, the sleeve contracts to tightly fit the container surface, creating a 360° full-coverage packaging effect.

Common Materials for Shrink Sleeves

The raw materials for shrink film include PET, OPS, PVC, and others. The physical properties of different materials affect the shrink performance and printing quality of the product. Therefore, the choice of material should be based on specific product requirements, such as environmental friendliness, transparency, toughness, and cost.

Advantages of Shrink Sleeves

•  Suitable for various irregularly shaped product containers that are difficult to package with traditional labels.
•  Provides a 360° complete coverage of the container, offering strong visual impact.
•  After heating, the film shrinks and tightly adheres to the container, making it less likely to fall off.
•  Diverse processing techniques, such as gold plating, cold stamping, UV embossing, embossing, 3D stamping, lamination, and varnishing.
•  The film sleeve can be easily removed, making the container easy to recycle and reuse.

Types of Containers Suitable for Shrink Sleeves

•  Suitable for irregular bottles, curved bottles, and other packaging where traditional labels are hard to apply.
•  Commonly used for standard bottles, cans, and bottle necks, such as beverage bottles, condiment cans, cosmetics, beer bottles, etc.
•  Compatible with containers made of various materials, including plastic, glass, and metal.

03 In-Mold Labels

In-mold labels are a labeling technology where the label is directly embedded into the surface of a plastic container during the molding process (such as blow molding or injection molding). The label is integrated with the container without the need for glue or subsequent labeling.

Common Materials for In-Mold Labels

The common materials for in-mold labels are PP and PE films. The label material must be compatible with the container material, such as using PP labels for PP bottles.

Advantages of In-Mold Labels

•  The label is integrated with the product surface, making it less likely to peel off or curl.
•  Waterproof, oil-resistant, and wear-resistant, suitable for freezing and soaking, with a long service life.
•  The label is flat and bubble-free, seamlessly integrated with the product surface, ensuring durability and aesthetics.
•  The label is difficult to remove or replace, effectively preventing product counterfeiting.
•  Eliminates the labeling process, improving production efficiency.

•  During recycling, the label can be processed together with the container without separation issues.

Types of Containers Suitable for In-Mold Labels

•  Mainly used for blow-molded and injection-molded products made of PP, PE, PET, and other materials.
•  Widely used in packaging for ice cream and chilled food, food boxes, beverage bottles, chemical product containers, as well as high-end brand lunch boxes and disposable tableware.
•  Particularly suitable for products with high appearance requirements and the need to maintain label integrity over the long term.

In Summary

Pressure-sensitive labels, in-mold labels, and shrink sleeves each have their own advantages. Pressure-sensitive labels are convenient and widely applicable, making them the first choice for most products. Shrink sleeves offer a 360° seamless decorative effect, suitable for packaging that needs to highlight the image. In-mold labels have a high degree of integration with plastic containers and are durable, making them suitable for packaging with high appearance requirements. We can choose the most suitable label type based on product characteristics, packaging requirements, and budget to achieve the best packaging effect.