Abstract: There is disclosed a novel mixture of polyhydroxy phenolic curing agents, such as novolac resins blended with a mixture of mono, bis and tris hydroxyaryl phosphine oxides for co-curing epoxy resins and imparting flame resistance thereto. A preferred composition includes a mixture of monohydroxyaryl, bishydroxyaryl and trishydroxyaryl phosphine oxide and a benzoguanamine/phenol/formaldehyde terpolymer which is used along with an epoxy resin to produce flame-resistant printed wiring boards without the use of halogens.

Abstract: There is disclosed a novel mixture of polyhydroxy phenolic curing agents, such as novolac resins blended with a mixture of mono, bis and tris hydroxyaryl phosphine oxides for co-curing epoxy resins and imparting flame resistance thereto. A preferred composition includes a mixture of monohydroxyaryl, bishydroxyaryl and trishydroxyaryl phosphine oxide and a benzoguanamine/phenol/formaldehyde terpolymer which is used along with an epoxy resin to produce flame-resistant printed wiring boards without the use of halogens.

Abstract: An adjustable film forming apparatus for receiving unfolded film and forming the unfolded film into a tubular form for packaging different sizes of articles. An angled guide rod receives respective portions of the web to form a flat bottom and cooperating with an angled member mounted above the flat bottom forms the top, closed side and opposite open side of the film tube for receiving articles to be packaged. An adjustable film forming table receives the flat bottom portion of the web. Self-positioning means are provided to floatably mount one end of the angled guide rod so as to reposition the guide rod in conformance with changes in the angled member to accommodate different article heights. A side sealer packaging machine with an in-feed conveyor, adjustable film forming apparatus, a side sealer, and an end sealer.

Abstract: An apparatus for reinking ribbons, including computer ribbons, comprising means for feeding the ribbon to be inked; means for collecting the reinked ribbon; drive means; guide means; inking means for applying a reinking composition to the ribbon so that it can be reused to print, including a reinking composition supply reservoir, a feed or ductor roller and an inking roller, wherein the positional relationship between the feed and inking roller determines the amount of reinking composition transferred from the reservoir to the ribbon; and cam means for adjusting the positional relationship between the feed and inking rollers.

Abstract: An improved ribbon re-inking apparatus having an improved means for holding and recirculating the re-inking composition comprising means for feeding and collecting the ribbon, means for driving the collecting means, inking means for applying re-inking composition to the ribbon, guide means for guiding the ribbon into contact with the inking means, and a supply means for providing a continuous supply of re-inking composition to be picked up and transfer to the ribbon, which supply means broadly comprises a closed reservoir means which holds a supply of re-inking composition, a relatively shallow open feed container which holds a pool of the composition to be picked up, a pump for continuously pumping the re-inking composition between the reservoir and the feed container, and a filter means for filtering the re-inking composition.