Pressure Sensitive Labels (PSL) can be made from a variety of materials, including paper, plastic, and foil, and they can be printed in a range of colors and designs. They are easy to apply and remove, making them a popular choice for labeling products in many industries.
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Pressure sensitive labels are also known as self-adhesive labels, are a type of label that adheres to a surface when pressure is applied. These labels are made of three layers: the facestock (the label material), the adhesive layer, and the liner (the backing material).
Pressure sensitive labels can be made from a variety of materials, including paper, plastic, and foil, and they can be printed in a range of colors and designs. They are easy to apply and remove, making them a popular choice for labeling products in many industries.
When pressure is applied to the label, the adhesive layer sticks to the surface, creating a bond. This type of label is commonly used for product labeling, packaging, and branding purposes.
A Pressure Sensitive Label is a material which has an adhesive glue on the backing. When pressure is applied, it will adhere to most surfaces. Pressure Sensitive Labels offer limitless design possibilities that far exceed those of paper wet glue labels. Promotional and functional features can be built into a Pressure Sensitive Label making them an effective marketing tool.
So you want to know, "What is a pressure sensitive label?" Are they stickers, product identifiers, labels or a component of brand packaging? Yes! Pressure-sensitive labels are used everywhere from toys, food containers, durable products, medical devices, and corrugated boxes, to craft beer can and bottles, cannabis containers, plastic pouches and so much more.
But what are they?
Let's break it down...
A pressure-sensitive label, or self-adhesive label, is made up of three layers: a face stock, an adhesive and a release liner. We refer to this as the "label sandwich." When a label is manufactured, these three components are sandwiched together to create a label material that can be printed on, laminated, die-cut, and finally peeled off and applied to your product.
Facestock
The facestock is the main part of the label. The material could be paper, film, or metallic foil. This is the layer where the ink is applied on press. For specific applications, a topcoat or laminate may be applied to protect the label artwork or enhance certain areas of the design.
Adhesive
The adhesive is what makes the label stick to the surface of the product or packaging. For glue-applied (cut & stack) labels, this process happens as the label is being applied. A pressure-sensitive label is manufactured to have the adhesive already applied to the face stock when you receive your roll or sheet of labels.
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The adhesive type will depend on your application and environment in which the label will be used. Many different types of adhesive are available including versions that stick under cold and wet conditions, some that release easily, some that stick permanently and others that are resealable.
For example, a label that is applied to a durable good, like an air conditioner, will require an adhesive that sticks to metal in an outdoor environment and can last for years. A rubber-based adhesive is aggressive and best for long-life applications.
If the label is only going to be used once, say for a shipping carton label, a strong adhesive isn't necessary. These adhesives are usually acrylic-based and stick more aggressively as they dry, usually over hours or days.
You might even want to select an adhesive that is re-positionable for a peel and redeem coupon.
Liner
The liner is the paper or film that makes up the backing web material. There are options that range from semi-bleached paper or craft paper, to a stronger clear film liner. The liner is coated with a special material that makes it possible to remove the label no matter how strong the adhesive you select.
Paper-based liners are strong yet easily perforated or torn if needed. Film liners are much strong, though slightly more expensive, and work well when there is tension on the label roll when applying the labels.
And there you have it - our label sandwich explained! If you have more questions or want to get more details about label construction, contact us to talk to one of our label experts. They can supply you with samples, quotes or do label testing for your application.
To learn more about labels, download the User's Guide to Labels.
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