radiation grafting of acrylic acid onto polypropylene fibres

grafting is carried out on natural or synthetic textile fibers or fabrics like cotton, silk, jute, nylon, polyester, polypropylene etc. in order to modify the properties. the resulting improvements in properties are change in hydrophilic or hydrophobic nature, durability, dyeability, crease resistance, antistaticity, soil resistance and i..

fluorescent colorants for plastics

there are four major areas where the optical brilliance of daylight fluorescent dyes and pigments have been employed to take full advantage of the striking contrast these colorants have with their surrounding environment. they include $em dash$ (1) packaging $em dash$ a good example of this would be detergent and soap boxes; (2) safety an..

effect of tetrakis(hydroxymethyl)phosphonium chloride (thpc) on selected properties of fibers

in the reported experiments, the effect of tetrakis(hydroxymethyl)phosphonium chloride (thpc) on the physical and chemical properties of wool, cotton, rayon, nylon, and polyester was examined. thpc had the greatest effect on wool, reducing its flammability and decomposition temperature and increasing the extensibility and dyeability of th..

sand beach energetics: an ecosystem approach towards a high energy interface

general results of a study of energetics on open sandy beaches in south africa are presented. these sand beaches are considered to interact with adjacent terrestrial environments via the sand dune system and with the sea via the surf zone. a food web is given for the macrofauna showing all known interactions from the supply of food materi..

determination of the ( $alpha$ $plus$ $epsilon$ ) amino $em dash$ group content of wool by reaction with ninhydrin

a simple method is proposed for the determination of the ( $alpha$ $plus$ $epsilon$ ) amino groups of wool by reaction with ninhydrin. the method gives good reproducibility without the need for complex apparatus. variations in fiber diameter and cystine content have no significant influence on the values obtained for ( $alpha$ $plus$ $eps..

screen and pad transfer decorating of molded plastic parts

silk screen printing, screen process printing, stencil printing, serigraphy, or mitography all describe a printing process in which ink is forced through a woven mesh in a selective manner so as to produce a controlled image, repeatedly. general remarks on the use of printing techniques for decorating plastics products are followed by a d..

decoration of plastic sheet by lithography

this paper reviews the main features of and progress in the two methods of decorating plastics sheets by using letter press or relief printing, and lithography. these are the same methods used to print or decorate paper and many other materials. both methods have some distinct advantages over hot stamping and silk screening, as well as so..

recent developments in the screen and pad-transfer decorating of molded plastics parts

silk screen printing, screen process printing, stencil printing, serigraphy or mitorgaphy, all describe a printing process in which ink is forced through a woven mesh in a selective manner so as to produce a controlled image, repeatedly. this paper reviews the most important features of screen decorating technique which is capable of gene..

potential for solar energy in some australian industries

a brief description of existing and possible future types of solar collectors with their estimated performance was prepared along with estimates for the cost of solar energy. available statistical data on energy usage for the manufacturing industries were reviewed and an assessment made of the potential for solar energy utilisation prelim..

dasll $em dash$ an automatic printed circuit board layout system

dasll stands for design automation system at lawrence livermore and is a system of computer programs to automatically lay out printed circuit boards. the focus has been on two-sided pcb fabrication aids; primarily drill tape, documentation, and artwork generation (including etch, silkscreen, and drill schedule artwork) limifour-layer pcbs..