Soft core technology

Two processing procedures are applied the soft core technology and the hard core technology . As the name implies, the two processes can be differentiated in the design and in the material of the core molds. 

Molds for the Soft Core Technology 1.8.2.3.1 Master Model... 

Similar to the soft-core technology, a mold cavity is also needed here however, this cavity must be more solid because of the higher forces occurring during both the layup and the curing process in the autoclave. Therefore, the cavity is made from aluminum or steel, milled in one piece without previous master models. The cores (Figure 1.212), usually divided, are made very accurately from aluminum. 

By itself a subject of study, metallic yam used in the past comes in a number of varieties that reflect the level of technology and trade of the time. A majority of metallic threads has been made into yarn by cutting prepared metallic material into strips that were then wound around a core thread of silk or linen. The metallic materials used were either gold or silver leaf adhered to membrane, parchment, leather, or paper or plain soft metal. Membrane is adversely affected by water and... 

Mass spectrometry is an emerging technology and now a core resource in all areas of viral research [1,2]. It is becoming a fundamental tool for work in areas such as protein characterization [3-6], structural virology [7-12], drug discovery [12,13], and clinical chemistry [14]. Most of the increased interest in this technique has been due to the development of matrix-assisted laser desorp-tion/ionization [15] (MALDI) and electrospray ionization (ESI) [16], which are highly sensitive and soft ionization techniques. 

Natural and synthetic iron oxides not possessing pigment properties are used as raw materials in the production of hard and soft ferrites (see Section 5.5.5.2, Electro- and Magneto-Ceramics) for radio, television and telephone technology, for adhesive magnets, for rotors in dynamos, for low-loss magnetic layers, for DC-motors, for transformer cores, for electronic calculators and high frequency furnaces. This amounts to an annual worldwide production of more than 300 10 t/a. 

Acrylic elastomers have previously been used only in the rubber industry and conventional polymers (EEA or core-shell acrylate polymers) are based on the rubber in hard phases. Based on the soft phase only, however, EniChem s Europrene AR uses original technology for modification of PA 6 with conventional acrylic rubber in granule form. It increases the specific rubber efficiency in the impact resistance characteristics, so differing from other traditional elastomers (EPR, SEES) used in modification of nylon. 

A variety of processes have received official non-objection from the U.S. FDA for use of mechanically recycled PET in food packaging. The earliest processes relied on insensitive uses or on imposition of a physical barrier between the food and the recycled plastic. For example, the first approval was in 1989 for use of recycled PET in egg cartons. Continental PET Technologies received approval in 1993 for a coinjected multilayer PET bottle with a l-rml (O.OOl-in) layer of virgin PET between the core layer of recycled PET and the container contents. The approach was used initially for soft drink bottles in Australia, New Zealand, and Switzerland. In 1994 and 1995, Wellman, Inc., obtained approval for use of mechanically recycled PET in multilayer packaging for a variety of food products. ... 

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