Found inside – Page 17Vacuum bag molding is another technique that offers several benefits. ... Purchase materials used in large quantities in returnable or reusable containers. Found inside – Page 32Chinese Patent 1,775,498 Caron MC (2005) Reusable vacuum bag for forming polymeric materials against the mold. US Patent 2,005,086,916 16. Found inside – Page 396Breathers have been an integral part of composite manufacturing and repair for nearly thirty years . Over this time , breather technology has not significantly changed . Presently new reusable breathers and vacuum bags , manufactured from ... Found inside – Page 979Of course , silicone reusable systems are not a universal remedy to all composite applications but a well defined design approach can produce reliable vacuum bagging systems . To a great extent , the reusable elastomeric vacuum bag solves ... Found inside – Page 4-25Laid-up prepreg stacks must be consolidated using a vacuum bag to ensure proper consolidation; a typical vacuum-bag assembly is illustrated in Figure 4-26. Found inside – Page 100(Seeman's.composite.resin.infusion.molding.process):. vacuum.by.pump.and.reusable.bags..Fiberglass.and.carbon.is.preliminar- ... Found inside – Page 133Some manufacturers have invested in reusable silicone rubber vacuum bags to reduce costs and lessen the chance of a leak or bag rupture during cure. Found inside – Page 776Attention is given to curing methods , space applications , infrastructure , transfer molding , composite analysis and modeling , metallics ... ( Author ) A99-17059 How vacuum bags really work • The myth of volatiles and breathers . ... ( FEP ) parting film and a reusable silicone rubber vacuum bag with a 0.75 - mm thick layer of Dupont Viton fluoroelastomer laminated to the outside of the silicone diaphragm . Found inside – Page 125The cost of the non-reusable materials described above is considerable; many companies use permanent, shaped vacuum bags made from high-temperature ... Found inside – Page 653Breather plies are used to provide a vacuum pathway into the composite ... Vacuum bags must be heat resistant, flexible, nonvolatile, and resistant to ... Found inside – Page 636THE INFUSION PROCESS UTILIZING A REUSABLE PRE - SHAPED VACUUM BAG HÃ¥kan Johansson DIAB ... A specially formulated polymer enables the creation of low cost reusable vacuum bags . ... Over the past five years or so a significant section of the composite industry has adopted infusion manufacturing ... Found inside – Page 205Vacuum bag bridging is one of the primary causes of resin-rich and ... of expendable vacuum bags, application of silicone rubber reusable bags is the ... Found inside – Page 19Even though in some instances vacuum bag composite parts are cured at room temperature ... vacuum bag, some manufacturers use reusable silicone vacuum bags. Found inside – Page 37116.5.2 REUSABLE VACUUM BAGGING TECHNIQUES There are material and recurring labor cost disadvantages to the use of expendable vacuum bags of plastic films ... Found inside – Page 94Product Line ( s ) : Distributor of process materials ( bagging film , release film , cutting tools , abrasives , fiberglass , reusable vacuum bags , hand layup tools , shears , rollers , breather cloth , bleeder cloth , shrink film , pressure sensitive tape ... Whether repairing existing components, fabricating new ones, building a race car, or restoring a classic, this is the one book to guide the reader through each critical stage. Found inside – Page 106Finally, inexpensive molds, reusable vacuum bags, and potential to spray the primer directly to the mold also played a vital role in cost reduction. Found insideReusable vacuum bags for " impossible " shapes - NO PROBLEMS ! MECHANICAL FASTENERS Advanced Composites Engineering Rivetting ideas Side distances Diameter. I Honeycomb Core Material bigHead We can supply a wide range ... Found inside – Page 32881td ) Reusable Vacuum Bagging Systems 0 Anderson St. ( ZIP Ultra - Violet Mercury For Curing & Drying Jave Lamps . For Use ... NR Company Profile Section ) ems , 555 Jackson Complete Reusable Vacuum Bagging Systems for curing composite and ... Vacuum Bag Machinery , Vacuum Pouches , Gas Flush Packaging Machinery , Rollstock Film , Cook & Chill Bags , & Shrink Bags ) ( 909-371-8369 ) . Found inside – Page 201( 801 ) 466-2686 • Composite Process Equipment ( 817 ) 636-2515 • McClean ... Ci • Littleford Day Inc. ( 606 ) 525-7600 Ci Vacuum Bags and Supplies . Found inside – Page 150Reusable vacuum bags have become an important application because of the high cost of vacuum bagging using disposable materials. Many composite applications ... Found inside – Page 1Reusable Vacuum Bagging Systems COSBY M. NEWSOM Bondline Products Norwalk , California Any manufacturing method that has not changed in forty years is overdue . Sticky - tape and thin film vacuum bags are still used to cure ... Found inside – Page 11763.3 Nonhazardous Materials There are some nonhazardous materials which add to the cost of composite components . The most ... Furthermore , reusable vacuum bags can eliminate the need for vacuum bags , breathers and sealant tapes . Found inside – Page 185Allied to this is the choice of vacuum bag used. Extensive use is made of rubber reusable bags where time may be saved or reliability improved by avoiding ... This book presents novel methods for the simulation of damage evolution in aerospace composites that will assist in predicting damage onset and growth and thus foster less conservative designs which realize the promised economic benefits of ... Found inside – Page 58Vacuum Bagging The lay - up with the bleeder / breather system is enclosed in a vacuum bag for drawing of vaccuum during cure . This is a critical ... For large - scale production , contoured , reusable silicone rubber bags are recommended . Found inside – Page 380Current commercial airliners use composites in much of the tail structures, ... The use of a silicone rubber reusable vacuum bag reduces the bagging time ... Found inside – Page 200This can bubble through the composite during cure and hence spoil the ... fill the bag with dry sand or light-weight PU spheres and then to apply a vacuum. Found inside – Page 292The mold cavity is sealed with a vacuum bag. The mold is heated and evacuated at the same time. The melted resin impregnates the reinforcement (generally ... Found inside – Page 566... 287f Moisture removal in formulation compounding of polycarbonate composites , 4 : 146 Moisture resistance of epoxy ... reinforcement and layup of an elastomeric bag - side tool , 3 : 417f resin systems , 3 : 399 - 400 reusable vacuum bags ... Found inside – Page 225Types of vacuum bags are described below : ( 1 ) Nylon film bags – This is by far the most commonly used bagging ... which goes around the part like caulking and held down the vacuum bag ( 2 ) Reusable bags – Reusable bags such as ... Found inside – Page 22413.6 ( a ) ) by encasing a heater element under the bag ( usually an electrical resistance wire embedded in silicon rubber ) . Alternatively , a reusable combined vacuum bag and heater blanket may be employed , consisting of silicon rubber ... Found inside – Page 45International SAMPE Symposium and Exhibition : shape and utility of the bag is refined after the initial How Concept . ... To exert internal ( 06833/95 ) Electron - Beam Curing of Filament - Wound pressure during composite curing or secondary bonding , Carbon Fiber ... Researchers at the NASA Langley Research Center in ( 06835/95 ) Improved Silicone Reusable Vacuum Bagging Hampton , Virginia ... Composites Manufacturing: Materials, Product, and Process Engineering fills this void. The author presents a fundamental Found inside – Page 75The basic technique is to apply two discrete vacuum bags, an inner bag, ... reusable pressure distributor and able to better control the vacuum pressure in ... Found inside – Page 125Reusable , form fitting vacuum bags , replacing nylon film throw - ways are most readily made directly on the part after its lay up and before its Thus a part and vacuum bags can be made simultaneously . Rubber vacuum bags , common with ... Found inside98-9 Reconstitution 27-8 Rectangular Composite Tube 124—5 Reciangular Plastic ... Packaging 102-3 Returnable packaging 23-4 Reusable bags 104-5 boxes 74-5. Found inside – Page 5This study resulted in an improved process which emphasized the utilization of reusable silicone rubber vacuum bags ... an improved bag molding procedure for advanced composites has been developed , characterized and vertified by test . Found inside – Page 591Vacuum bag Breather cloth Solid film - S t . . : Bleeder cloth. . Release filr - Metal base platel mandrel - Composite material Elastomeric material local - area pressure pad Fig . 3 Local - area pressure pad Reusable vacuum bag part , and ... Found inside – Page 142Preformed, reusable rubber bags were then placed over the shell molds in the wing compartments and sealed to the upper tooling plate. Vacuum venting was ... Found inside – Page 5-38Manufacturing Advanced Composite Components for Airframes. The bag , to be useful in vacuum bag processing , must be capable of removing volatiles during cure in a convection oven and have ... The advantages and disadvantages of the two bagging systems are presented below : A reusable bag is usually molded to ... Found inside – Page 379The increased potentials for rejected composites because of defects caused ... Uses of thick silicone rubber blankets and self-sealing reusable bags reduce ... The objective of this work is to develop flexible magnetic clamping structures to increase the consolidation pressure in conventional vacuum bagging of composite laminates, thereby obviating the need for an autoclave. Found inside – Page 7June 1988 D5 Composites : Product and Process Developments shock and chemical resistance , are machinable , and meet MIL - C - 9084 and ... D5-0216 Reusable Vacuum Bag Material Available for High - Strength Structural Composites . An illustrated guide to wooden boat construction using WEST SYSTEM epoxy by pioneers in the field of wood/epoxy composite construction. 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