Adhesive strips

The adhesive strip on the outside of sanitary napkins is conventionally applied by hot melt transfer coating in-line with the production of the napkin itself. The adhesive in this application performs a function in the product beyond just holding the parts together. Thus, the requirements are more numerous ... 

For most electron-curable adhesives, a dose of 100 kGy is required to cure. Fig. 4 shows the speed of curing various widths of material as a function of accelerator power. A reasonably controllable speed for moving parts through an accelerator would be approximately 10 m per minute. Based on this criterion, the lower wattage limit for an accelerator curing an adhesive strip 5 cm wide would be 5 kW. For curing very large parts a 50 kW accelerator would be more suitable. 

Fig, 8.16 illustrates schematically the different configurations of interleaving strips which have been studied (Chan et al., 1986 Chan and Ochoa, 1989 Kim, 1983) (1) Adhesive strips interleaved along the free edge. 

Adhesive strips interleaved at a certain distance away from the free edge. 

Norman, T.L. and Sun, C.T. (1991). Mechanical properties and interlaminar toughness of cross-plied laminates containing adhesive strips. AIAA J. 29, 247-252. 

The assembly of the rectangular ducts must be executed with riveted sleeves and retractable adhesive strips. 

Coating of one joint member with an adhesive strip of controlled thickness and width... 

An unusual skin burn resulted from the application of a glyceryl trinitrate transdermal patch in a patient who was subsequently exposed to radiation that leaked from a damaged microwave oven. The patient sustained a second-degree burn of the size and shape of his skin patch, probably due to a reaction with a metallic element in the adhesive strip (94). 

Hints on the presence of silicone deposits are given by the adhesive strip test (lowering of the adhesion due to silicone) and the foam test (marked formation of foam when the textile sample is shaken with chlorinated hydrocarbons). Detection by means of IR spectroscopy is discussed in Section 8.4.4. 

Film adhesives have to be strictly delimitated from adhesive tapes and adhesive strips (Sections 5.6 and 5.7). Mainly blocked two-component reactive adhesives (Section 3.1.4) are used raw materials. For transport and storage (at low temperatures) they are applied to a - nonadhesive - substrate. Prior to processing they are removed and then applied between the adherends (compounding) and cured under pressure and heat (Sections 3.1.4, 3.2.2 and 4.1.2). Special film adhesives (e.g., phenolic resin nitrile rubber) are also activated by suitable solvents. 

Adhesive strips Consist of paper or kraft paper strips, if required reinforced, coated with an adhesive layer that can be activated by water or heat. 

HN Mayrovitz, SG Carta. Laser-doppler imaging assessment of skin hyperemia as an indicator of trauma after adhesive strip removal. Adv Wound Care 9(4) 38-42, 1996. 

Personal hygiene products such as disposable diapers make use of self-adhesive strips, covered with a release tape that is removed at the point of use. Again unmodified acrylic dispersions as well as hot melts dominate this application. The same considerations apply here as in first-aid dressings, and in particular the adhesive must not cause skin irritation. 

Thin Support Films. Filter Paper Adhesive Stripping... 

Strips of thermoplastic web are laid as a fine weft (Figure 21.4) the bonded strip is flat and has zero crimp, but certain resins can soften and loosen the adhesive strip. The resin strip does tend to be tacky and so the prepared fabric is stored interleaved with polyethylene fihn. 

A strip of adhesive tape (Tesafilm, Scotch tape), 1—2 cm wide, is stuck all round the outside of the plate to be able to prepare thicker layers on glass plates, using the pouring procedure. The adsorbent suspension is poured into the shallow trough thus formed. The adhesive strip can be torn off after the layer has dried. 

If animal does not fit on one single MALDI plate, place a large Post-it(R) (3M) with the adhesive side facing up onto a flat surface. Align the plates on the adhesive strip which will prevent them from shifidng during the mounting process. 

Skim reading is a great time-saver. First of all, flip through the book to see what it contains, looking at the contents, summaries, introduction, tables, diagrams and so on. It should be possible to identify areas that are necessary to the syllabus. These can be marked with removable adhesive strips or Post-it notes. 

Sticky tapes and labels are obvious uses of adhesives that cover a wide range of everyday applications. A relatively new type of adhesive has apparently been used in the manufacture of Post-it (trademark, 3M) products, small slips of paper with a reusable adhesive strip at one edge. SEM images show the adhesive partly coating the paper fibers (Fig. 5.83) [396]. Rounded domains of about 5-50 /xm form a contact on the applied surface (Fig. 5.83A). Regions between these rounded domains have a fine particulate structure which does not adhere, permitting the label to be removed easily. In order to image the adhesive nature of these materials, two adhesive strips were attached and then peeled back and exanuned in the SEM. (The adhesive strip and a piece of paper peel away from each other too... 

Figure 5.4 Variation of the peel strenth with the thickness of adhesive strip at 140 °C for NR/NR ( ) and NR-BR/NR-BR blend (o) test pieces...

A further technique is to form an adhesive strip containing the metallic coagent. The adhesive strip may then be used to bond another rubber to a metal surface. When the adhesive strip approach is used, the metallic coagents are milled into the rubber compoimd. The uncured compound is then formed into sheets by calendaring and then cut into stable, thin strips that contain the metallic coagent, peroxide and other rubber additives. The rubber strip can then be applied between the uncured rubber compound and the... 

Coupon overlap is 2.5 cm Adhesive strip thickness 0.8 mm Rubber thickness varies... 

Eigure 8.10 Adhesive strip - test specimen side view... 

Table 8.19 Bonding peroxide cured elastomers to steel with the EPDM Saret 633 adhesive strip ...

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