Sealing tape

Polyester film consumes 7% of production. When coated with a chemical emulsion, it is used as x-ray and microfilm when coated with a magnetic emulsion, it is used for audio and video tapes and when coated with an adhesive, it is used for wrapping and sealing tapes (see Films and sheeting). 

Air cells are packaged with sealing tape over the air holes or in sealed containers. In the sealed state, they maintain their capacity well during storage... 

Pre-formed sealing tapes are widely used in construction applications and for glazing applications in automotive glass. 

To investigate a vertical distribution of a chemical, a sediment column is divided into sections with appropriate thickness. The sediment column taken in a pipe should be refrigerated in an ice-cooled container, transported to the laboratory, and removed carefully on to a clean tray so that there is as little disturbance as possible to the soil core structure. In the case of a column in which there is little soil moisture and it tends to collapse, the soil should be pushed out to each required thickness and carved off. It is also possible to take a sediment column up to a 30-cm depth using a pipe that is connected to cylinders (5-cm height) with sealing tape. In this case, the sample in each 5-cm fraction can be obtained as it is, after removing the tape. 

Load each well with 50 pL of the mixture obtained from step 12, cover the plates with plate-sealing tape, and incubate, with continuous shaking using a microtiter plate shaker, for 90 min at room temperature. 

Stop the plate shaker after 90 min (step 14), remove the sealing tape, and discard the solution into a waste bucket containing 0.5% sodium hypochlorite to destroy the toxin. Wash the plates five times with washing buffer and dry them as in steps 6 and 7. 

Polyisobutylene fractions of particular molecular weights are very tacky and are used as adhesives for pressure-sealing tapes. 

Poly-tetrafluoroethylene or -hexafluoropropylene sealing tapes burned vigorously in contact with the alloy in a helium atmosphere [1], A teflon-coated magnetic stirrer bar used to stir the alloy under propane atmosphere ignited when the speed was increased and generated enough heat to melt the glass. Triboelectric initiation was postulated [2],... 

Carefully transfer the cleared bacterial lysate supernatants from each of the 24 wells into the wells of a 96-well filter plate. Cover the filter-plate top with clear plate-seal tape, to prevent cross-contamination. 

Sealing tape has 35 to 90 pounds per ream of kraft paper as a substrate, whereas, reinforced sealing tape is based on a bonded laminate of kraft paper, reinforcing fibers, and kraft paper. The adhesives applied to these substrates may be thin-boiling, waxy starches alone, or blended with a soluble dextrin (5). More recently, blends of a soluble dextrin with oxidized potato or a hydrox-ypropyl ether of an oxidized potato starch are being used (9). Also, the acetate or succinate of an oxidized waxy starch may be used (15) as well as specially produced waxy starch acrylamide graft copolymer products (16). 

FIGURE 4.11 Schematic of the process for producing thread seal tape. (Courtesy of DuPont.)... 

Microtiter plates, model M129E (Dynatech Laboratories Inc., VA). Plate sealing tapes. 

Use Lubricating-oil additive, hot-melt adhesives, sealing tapes, special sealants, cable insulation, polymer modifier, viscosity index improvers, films, and coatings. 

Filter Stick. A typical filter stick for solution filtration is shown in Figure 4. A section of teflon tubing (2-3 ft) is pushed over the Luer fitting of an observation port (Popper Sons), and conventional filter paper is then attached to the end of the observation port as shown. Half inch teflon sealing tape (Aldrich - this may also be available from a local plumbers supplier as pipe dope) is first wrapped around the base of the observation port, filter paper is then wrapped around the outside of the teflon tape, and one or two loops of nichrome wire (20 gauge, 32 thou) are used to secure the filter paper in place. The teflon tape provides a bed into which the wire can bite and seal the system. Any filter paper may be used, but we have found water resistant fine filter papers such as Whatman s 50 to be most satisfactory, except for gummy solids which may require a faster paper. 

Paper and board as security features may seem a little far from reality to the uninitiated, but seals, tapes, labels and cartons can all be utilised as devices to ensure the security of your product. The security issues will be dealt with in two ways first the really criminal issues, i.e. tampering and counterfeiting in particular second the security of ensuring that the correct copy gets onto the correct paper material, onto the correct substrate containing the correct pharmaceutical product. 

---