| An integral part of barcode labeling, barcode label | | | | are generally classified into two groups: permanent |
| adhesive is the substance or material applied to | | | | and removable barcode label adhesives. Most of |
| the back of a barcode label to attach it to the | | | | the barcode applications employ permanent |
| surface of a particular item. A barcode label | | | | barcode label adhesives. A feature of this type of |
| adhesive should be of industrial grade and must | | | | barcode label adhesive is that it has a strong |
| have an apply temperature ranging from 40 | | | | adhesion to a range of surfaces including paper, |
| °F to 250 °F.Shear, tack, and peel are | | | | plastic, and stainless steel. Permanent barcode |
| among the properties that are critical for barcode | | | | label adhesives are generally used for applications |
| label adhesives. Shear represents the | | | | where removal is not required or |
| measurement of an adhesive's internal strength | | | | necessary.Removable barcode label adhesives are |
| with which it attaches itself; shear is especially | | | | used for barcode applications where the label is |
| important on curved surfaces. Adhesives with a | | | | temporary. Common examples of removable |
| low shear fall off easily, while high-shear adhesives | | | | barcode label are price tags affixed on costly |
| do not. Tack measures the ability of an adhesive | | | | consumer items. The apply temperature of |
| to build an instantaneous bond with the surface on | | | | removable barcode label adhesives starts at |
| which it is applied. Peel determines the force | | | | around 40°F, which is higher than that of the |
| required to remove a label.Barcode labels are | | | | permanent barcode label adhesives. For particular |
| available in a variety of adhesive backings, and the | | | | applications, barcode label adhesives are further |
| application of adhesives depends upon the type of | | | | sub-divided into acrylic, acid-free, |
| surface and quality of label material. The weight of | | | | cold-temperature, high-temperature, |
| the adhesive coat varies according to the | | | | pressure-sensitive, emulsion, food contact, silicone, |
| application requirements. Barcode label adhesives | | | | solvent, rubber, and glove-friendly adhesives. |