Quick-stick

Lowering of the rubbery plateau modulus increases the compliance of the polymer making faster wet-out of a substrate possible. As a result, the PSAs show more aggressive tack properties. Provided the surface energy of the substrate allows for complete polymer wetting, a PSA with improved quick-stick and faster adhesion build will be obtained. 

The methods to evaluate PSAs include the rolling ball test (ASTM D3121, PSTC-6, BS EN 1721), loop tack test (ASTM D6195, FINAT Test Method 9, BS EN 1719), and quick stick test (PSTC-S). ... 

Figure 5 Quick-stick tack testing (a) compressive effect of 90° peel (b) loop tack testing.

Economy For many applications, rubber-based adhesives and sealants are inexpensive relative to the base cost of many other polymer systems. In addition, the costs for dispensing and application tooling are often low. The speed of assembly operations with quick-stick adhesives often provides a labor and total cost advantage, and may even lower tooling costs. 

Quick Stick (PSTC-5) - A one-inch wide specimen is allowed to bond to the metal panel without any external pressure. The Instron immediately is employed to measure a... 

Fig. 3. Quick Stick and Peel Adhesion of Natural Rubber Latex Tackified with a Beta-Pinene Resin Emulsion...

The next series of Figs. 5-7 illustrate the use of a relatively new aromatic modified terpene resin as a tackifier for natural rubber latex. Again, the properties of probe tack, quick stick, peel and shear adhesion were measured for various rubber/resin ratios. We observe that this resin tackifies the natural rubber latex quite well, yet the curves are substantially different from those generated with the beta-pinene resin emulsion. These differences can be attributed to differences in solubility parameter (caused by compositional differences) and molecular weight and distribution of the two resins. 

Fig 9. Quick Stick and Peel Adhesion of Various Carboxylated SBR Latexes Tackified with an Emulsion of the Glycerol Ester of Highly Hydrogenated Rosin... 

Fig. 14. Quick Stick, Peel and Shrear Adhesion of an Emulsion of an a-Methyl Styrene/Vinyl Toluene Copolymer Resin with Acrylic Latex C...

Combination Tack Quick Stick Adhesion Adhesion... 

The two-roll mill rollers are parallel and horizontally moimted. The speeds and directions of rotation are different. The gap or nip between rolls can be controlled. Heat is applied or can be developed by friction. The dry premix is forced down through the gap and allowed to form a band or sheet on one of the rollers. There is little mixing, and so the banded material is usually cut and reintroduced manually to promote mixing (1). Leaving the material on the mill for a longer period of time can maximize dispersion. On occasion, the majority of the resin is added separately and allowed to band. The colorant blend is then slowly added. This can help contain the pigments and additives. The powders quickly stick to the banded resin and are incorporated as the material passes through the nip. 

FIGURE 50. Quick stick data vs. RDS data (NR/resin system). 

From an efficiency standpoint, most flexible packaging manufacturers using common substrates benefit most by using PSAs for quick-stick application. However, some specialty substrate applications may call for heat-activated or UV-curable adhesive tape technologies as an alternative splicing product. 

Quick stick is a measure of how readily a pressure sensitive adhesive adheres to a test surface with no applied pressure other than the weight of the adhesive backing. The test strip is peeled immediately after application. 

The term quick stick is also frequently equated with tack it is defined by PSTC as Ability of tape to adhere to a surface instantly, using no pressure other than weight of... 

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