Roller laminator

Roller A serrated piece of aluminum used to work a plastic laminate. 

Lamination and pressure rollers for paper, steel, and printing industries rollers and wheels for heavy-duty transport cable railway guide rolls... 

Because people everywhere tend to take their fun seriously, they spend freely on sports and recreational activities. The broad range of properties available from plastics has made them part of all types of sports and recreational equipment for land, water, and airborne activities. Roller-skate wheels are now abrasion- and wear-resistant polyurethane, tennis rackets are molded from specially reinforced plastics (using glass, aramid, graphite, or other fibers), skis are laminated with plastics, and so on. 

Roller A serrated piece of aluminum used to work a plastic laminate. Purpose of device is to compact a laminate and to break up laige air pockets to permit release of entrapped air. 

For thermoplastic laminates the material obviously needs to be heated before entering the roller region. Induction (450 kHz.) was selected as the means for doing this. The basis for the selection was its noncontact nature and its ability to heat through the thickness quickly. Use of induction was also predicated on the fact that most components of interest utilized graphite fibers, which had the required electrical conductivity. A great deal was learned about the... 

Figure 14.21 Laminate characteristics in the vicinity of the forming roller. The material must be rigid as it leaves the forming roller at the tangent line...

As seen in Figures 6 and 7, the final system has a tab that aides in commercial system application. This tab is formed from the release liner by the relamination step, which consists of placing a roll of laminate onto the slitter-relaminating equipment. This roll is then guided through rollers where the release liner is removed and slit (sliced) to the correct width. The slitted material is then placed... 

Strip Packs. Usually two laminates of paper and/or soft temper aluminum and various plastics have been used as clear cellophane (i.e., coated rather than a laminate). This process uses two rolls of either laminate or film which at the point of coming together have the product (usually tablet or capsule) placed between the rolls and heat sealed inside the rolls by means of a hot knurled roller, thereby welding the inside layers of the laminate together. The essential point of this method is that the product itself helps to form the pocket. The number of packed tablets or capsules required is then cut off the strip. 

The microstructure was realized by a dry-film photoresist technique and based on established techniques from printed circuit board technology [142], Dry resists are available as thin films, e.g. of thickness 50 or 100 pm. The resist films are encased in other polymer materials which are later removed. The resist films can be deposited on various base materials such as silicon or polymers giving mechanical stability. Lamination is carried out with a roller laminator. Then, exposure is made and spray development without any solvents follows. The process steps can be repeated at multi-laminated structures. Closed structures can be made in this way. 

Some tablet presses are equipped with two sets of rollers a smaller roller located between the feed frame, and the main compression roller which allows a small degree of compression (e.g., precompression) to take place. Precompression can remove air from the powder bed in order to minimize tablet capping and lamination. Good com-pactibility of the powder blend is essential to tablet formation under the influence of compression forces and ensures that tablets will remain intact compact when the compression force is removed. 

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