Science and Technology of Latex Dipping

Whilst there are many technical articles covering polymer latices, there are few that look in detail into the actual processes employed by the manufacturers to make these products, the constraints that they face and the problems that they ...

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Author: David Hill

Publisher: Smithers Rapra

ISBN: 9781909030060

Category: Science

Page: 274

View: 432

Many rubber products that have a direct impact on our health and quality of life today - gloves, condoms, baby bottle teats, catheters and various other medical devices - are made by dipping elastomers in a latex form. Whilst there are many technical articles covering polymer latices, there are few that look in detail into the actual processes employed by the manufacturers to make these products, the constraints that they face and the problems that they must overcome to compete successfully in the market place.This book looks to help fill that gap by describing, in practical terms, the raw materials used in modern latex dipping, how these materials are prepared for use and the actual processes employed to convert these materials into a finished product. Some of the scientific principles that will be encountered in the production procedures are described in simplified form to help those involved in the manufacturing understand the critical principles involved in latex dipping. In addition, advice is given on the reinforcement of dipped latex products, quality control, problem solving and the validation of the manufacturing processes in an industry that is becoming increasingly regulated.The book will be of value to all those engaged in the manufacture of dipped latex products, the production plant supervisors, those working in quality control, testing laboratories and technical support functions. It is hoped that those involved in the research and development of latex dipping, together with interested workers outside of the direct manufacturing industry, for example in universities and colleges, will also find it a useful insight into modern manufacturing with latex products, and how science and technology are coming together to provide products to make our world a better place in which to live.

Rubber Machinery Sourcebook

DIPPING EQUIPMENT Latex Dipping Machines The dipping process , as the name implies , involves the immersion of a former into either a latex , or a rubber ...

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Author:

Publisher: iSmithers Rapra Publishing

ISBN: 1859572294

Category: Rubber industry and trade

Page: 154

View: 385

A one-volume source of information for procurement and technical personnel that facilitates the choice and purchasing of rubber machinery. This sourcebook combines an analysis of the types and range of rubber machinery available, together with contact details for machinery manufacturers and suppliers.

Latex Dipping

A major consideration in the design and layout of a dipping line are the dipping tanks, especially the latex tanks. Dipping tanks on a latex dipping line ...

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Author: David M. Hill

Publisher: Walter de Gruyter GmbH & Co KG

ISBN: 9783110638097

Category: Science

Page: 259

View: 748

Latex products that we use in everyday life have a great impact on health and lifestyle. This book gives a comprehensive overview of how raw materials are prepared for latex manufacture and how they are converted to products by modern latex dipping methods. Tools for how to solve production problems encountered, quality control and how to validate the processes used in the latex industry are thoroughly discussed and described.

Latex 2001

Latex dipping fortunately falls between these extremes . Coagulant dipping is generally slower than the latex dip and of course the coagulant plays a major ...

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Author:

Publisher: iSmithers Rapra Publishing

ISBN: 1859572995

Category: Latex

Page: 230

View: 558

Polymer Latices

This method of heat-sensitizing natural rubber latex for dipping is particularly suitable, not only because polyvinylmethyl ether is very effective as a ...

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Author: D.C. Blackley

Publisher: Springer Science & Business Media

ISBN: 9789401158480

Category: Technology & Engineering

Page: 655

View: 189

Polymer Latices, Second Edition is a comprehensive update of the previous edition, High Polymer Latices, taking into account the many developments since it was first published in 1966. It is the only publication to provide such an outstanding and extensive review of latex science and technology, from background theory and principles, to modern day applications. It will prove an invaluable reference source for all those working in the area of latex science and technology, such as colloid chemists, polymer scientists, and materials processors.

Practical Guide to Latex Technology

4.1 Dipping Latex dipping is a process by which thin walled polymer products are produced by first immersing a former in a latex which has been suitably ...

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Author: Rani Joseph

Publisher: Smithers Rapra

ISBN: 9781847355676

Category: Science

Page: 110

View: 151

Latex-based technology forms a sizable fraction of natural and synthetic rubber technology and an introduction to the important technologies is beneficial to all practicing technical personnel. This book offers a condensed practical guidance on the technologies used for the production of important latex products. The book begins with a short history of natural rubber latex, formation in the tree and the tapping, storage and conversion of latex to marketable forms. It discusses preservation and concentration of natural rubber latex and the most widely used latex compounding ingredients. Dipping and casting techniques are discussed, as well as the technology related to foams, threads and adhesives. In addition, the book offers an introduction to important lattices such as styrene-co-butadiene rubber, acrylonitrile-co-butadiene, polychloroprene, polyvinyl chloride, and so on. Fully illustrated throughout, with photographs from actual production sites, this practical guide is ideal for academics, research and development managers, students of polymer technology and all those working in the latex industry.

Latex and Synthetic Polymer Dispersions 2013

Recently it was reported that the latex dipping line is evolving into a high-speed machine that can produce up to 45,000 pieces of NBR gloves per hours per ...

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Author: Smithers Rapra

Publisher: Smithers Rapra

ISBN: 9781909030572

Category: Science

Page: 154

View: 763

The 8th Smithers Rapra conference on Latex and Synthetic Polymer Dispersions gave a very broad picture of the industry. These proceedings cover all the presentations from the two day event which included: The scientific principles underlying latex dipping were described by Professor C. C. Ho, and Dr, Aik Hwee Eng of Ansell spoke about a modern result of dipping - the antimicrobial glove. Very interesting observations about the allergenic potential of synthetic latex gloves compared to those dipped from natural rubber were made by Hardi Tamm of Korymbos. The use of gamma radiation from the very start of the process, as a means of prevulcanization, to the end of the production process, in sterilization, was described by Dr. Rosamma Alex of the Rubber Research Institute of India and Eric Beers of Nordion respectively. The versatility of natural latex was demonstrated in a paper by Dr. Azura of Universiti Sains Malaysia, who showed us how it can be used for the cleaning of compression moulds. Innovative polymer synthesis in the manufacture of latex dispersions was presented by Dr. Joachim Storsberg of the Fraunhofer Institute, and Dr. Soeren Butz of Synthomer told how more clever chemistry could be used to "e;tailor-make"e; pressure sensitive adhesives. The environmental side of the industry was not forgotten, with two presentations from the Malaysian Rubber Board - Muhammad D Syraarani describing an environmentally friendly method for the analysis of magnesium in latex and Dr. Devaraj Veerasamy presenting the use of ultrafiltration to process latex. In a similar vein, Prof. Khairah Haji Badri, of the Universiti Tun Abdul Rahman showed how natural resources such as palm oil can be used to create useful polymers. David Hill of David Hill and Associates described how to carry out Process Validation of dipped condoms and gloves, and the delegates were told how the newest latex for dipping - synthetic polyiosprene - compares with the oldest - natural rubber - by Dr. Bert Krutzer of Kraton. The conference ended with Dr. Siby Varghese of the Rubber Research Institute of India, and Prof. Sabu Thomas of the Mahatma Gandhi University describing recent advances and applications in the field of nanotechnology.

Latex in Industry

In operation , the metal salts are added to the latex after which the forms , either
pre - heated or continuously heated by internal heating coils , are immersed in
latex . In localized areas ... Dipping in highly concentrated latex . . Dipping with
aid ...

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Author: Royce Jennings Noble

Publisher:

ISBN: WISC:89078554664

Category: Latex

Page: 912

View: 332

Rubber Products Manufacturing Technology

First latex dipping . The formers are dipped into the latex compound and slowly withdrawn , usually with former inversion at the end . 4. Oven .

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Author: Anil K. Bhowmick

Publisher: CRC Press

ISBN: 0824791126

Category: Technology & Engineering

Page: 936

View: 622

Provides authoritative coverage of compounding, mixing, calendering, extrusion, vulcanization, rubber bonding, computer-aided design and manufacturing, automation and control using microprocessors, just-in-time technology and rubber plant waste disposal.

Journal of the Rubber Research Institute of Malaya

Rubber Research Institute of Malaya. Latex Dipping II . Development of the
Theory of Deposition of Rubber and the Influence of Coagulant A. D. T. GORTON
and G. C. IYER The relationship between the thickness of rubber deposited
under the ...

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Author: Rubber Research Institute of Malaya

Publisher:

ISBN: CORNELL:31924053921239

Category: Hevea

Page:

View: 219

Rubber Recycling

... compound is intended to be used for an industrial cleaning purpose, such as cleaning the formers used in the production of latex dipped articles.

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Author: Jin Kuk Kim

Publisher: Royal Society of Chemistry

ISBN: 9781788015448

Category: Science

Page: 337

View: 650

Rubber is used in a vast number of products, from tyres on vehicles to disposable surgical gloves. Increasingly both manufacturers and legislators are realising that recycling is essential for environmental sustainability and can improve the cost of manufacture. The volume of rubber waste produced globally makes it difficult to manage as accumulated waste rubber, especially in the form of tyres, can pose a significant fire risk. Recycling rubber not only prevents this problem but can produce new materials with desirable properties that virgin rubbers lack. This book presents an up-to-date overview of the fundamental and applied aspects of renewability and recyclability of rubber materials, emphasising existing recycling technologies with significant potential for future applications along with a detailed outline of new technology based processing of rubber to reuse and recycle. This book will be of interest to researchers in both academia and industry as well as postgraduate students working in polymer chemistry, materials processing, materials science and engineering.

Development Document for Proposed Effluent Limitations Guidelines and New Source Performance Standards for the Fabricated and Reclaimed Rubber Segment of the Rubber Processing Point Source Category

These segments dipped goods and latex foam as well as the minor products , latex thread and porous mold items . are Raw Materials The basis for the ...

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Author: United States. Environmental Protection Agency. Office of Water and Hazardous Materials

Publisher:

ISBN: UIUC:30112008877166

Category: Rubber industry and trade

Page: 213

View: 472

"This document presents the findings of an extensive study of the rubber processing industry by Roy F. Weston, Inc., for the Environmental Protection Agency, for the purpose of developing effluent limitations guidelines ... "--Abstract.

Chemistry Manufacture and Applications of Natural Rubber

latex particles are overcome by the ionic coagulant, as explained in Fig. ... the first stage of dipping occurs within 0À30 s with rapid buildup of wet gel.

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Author: Shinzo Kohjiya

Publisher: Woodhead Publishing

ISBN: 9780128188446

Category: Technology & Engineering

Page: 506

View: 541

Chemistry, Manufacture and Applications of Natural Rubber, Second Edition presents the latest advances in the processing, properties and advanced applications of natural rubber (NR), drawing on state-of-the-art research in the field. Chapters cover manufacturing, processing and properties of natural rubber, describing biosynthesis, vulcanization for improved performance, strain-induced crystallization, self-reinforcement, rheology and mechanochemistry for processing, computer simulation of properties, scattering techniques and stabilizing agents. Applications covered include natural rubber, carbon allotropes, eco-friendly soft bio-composites using NR matrices and marine products, the use of NR for high functionality such as shape memory, NR for the tire industry, and natural rubber latex with advanced applications. This is an essential resource for academic researchers, scientists and (post)graduate students in rubber science, polymer science, materials science and engineering, and chemistry. In industry, this book enables professionals, R&D, and producers across the natural rubber, tire, rubber and elastomer industries, as well as across industries looking to use natural rubber products, to understand and utilize natural rubber for cutting-edge applications. Explains the latest manufacture and processing techniques for natural rubber (NR) with enhanced properties Explores novel applications of natural rubber across a range of industries, including current and potential uses Discusses resources and utilization, and considers sustainable future development of natural rubber

Latex 2006

Dipping compounds Except where otherwise specified , compounds were made by adjusting the pH of the latex to approximately 8 .

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Author:

Publisher: iSmithers Rapra Publishing

ISBN: 1859575501

Category: Latex

Page: 242

View: 614

This fourth international conference on latex brought together manufacturers, technologists and researchers with a common interest in latex applications and technology.

Official Gazette of the United States Patent Office

... RESIN LATEX STABILIZER AND COAGULANT WITHDRAW FORM AND DRY DIP FORM IN LATEX DIPPING COMPOSITION TO FORM DESIRED ARTICLE 3,286,011 METHOD OF MAKING ...

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Author: United States. Patent Office

Publisher:

ISBN: PSU:000065837245

Category: Patents

Page:

View: 983

Latex Natural and Synthetic

Dipping compounds will normally contain curing ingredients and an antioxidant .
Pigments , waxes , and the like ... One - piece rubbers , both ladies ' toe rubbers
and conventional rubbers , are made from latex . The latter may be dipped on an
 ...

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Author: Phillip G. Cook

Publisher:

ISBN: STANFORD:36105031217420

Category: Latex

Page: 231

View: 349

Development of latex to its present form. Latex production and importation. Testing of latex prior to use. Vulcanization of latex. Compounding: materials affecting liquid properties. Materials affecting film properties. Processing and testing of compounds. Synthetic rubber latices. Rubber-plastic latices. Latex products.

Natural Rubber Science and Technology

The technique is not normally used in the dipping industry but it could be worth
considering for the thinner dipped goods such as surgeon's gloves and condoms
, in which flaws must be avoided . 3. Conversion processes NR latex normally ...

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Author: A. D. Roberts

Publisher: Oxford University Press, USA

ISBN: STANFORD:36105030476308

Category: Rubber.

Page: 1136

View: 595

A summary of the current position in the study of rubber, its fundamental properties and the uses to which it is put, from everyday to extraordinary applications, with pointers to the future.

EPA 440 1

Latex - Based Products Subcategories In - Plant Control since Subcategories J ... General Latex Spills and Leaks Both the latex - dipped goods ( Subcategory ...

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Author:

Publisher:

ISBN: CORNELL:31924056581394

Category:

Page:

View: 113

Troubleshooting Rubber Problems

While NR latex is predominantly used in the manufacture of dipped gloves, ... Latex dipping represents nearly 50% of the worldwide consumption of NR latex ...

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Author: John Sommer

Publisher: Carl Hanser Verlag GmbH Co KG

ISBN: 9781569905548

Category: Technology & Engineering

Page: 310

View: 357

Many challenges confront the rubber technologist in the development, manufacture, and use of rubber products. These challenges include selecting and combining materials to form rubber compounds suitable for processing, successfully operating a range of manufacturing equipment, and meeting product performance in difficult and diverse environments. Case studies and literature references relate problem solutions to the everyday experience of the rubber technologist. From materials to processes to products, this book identifies many different rubber-related problems and suggests approaches to solve them. Contents: • TSE and TPE Materials, Compounds, Processes, and Products • TSE Materials and Compounds • TSE Processes and Equipment • TSE Products • TPE Materials and Compounds • TPE Processes and Equipment • TPE Products

Pinch Analysis for Energy and Carbon Footprint Reduction

The formed latex films then undergo leaching, a process that removes excess chemicals in the latex film by dipping them in a hot water bath in Leaching ...

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Author: Ian C. Kemp

Publisher: Butterworth-Heinemann

ISBN: 9780081025376

Category: Technology & Engineering

Page: 566

View: 798

Pinch Analysis for Energy and Carbon Footprint Reduction is the only dedicated pinch analysis and process integration guide, covering a breadth of material from foundational knowledge to in-depth processes. Readers are introduced to the main concepts of pinch analysis, the calculation of energy targets for a given process, the pinch temperature, and the golden rules of pinch-based design to meet energy targets. More advanced topics include the extraction of stream data necessary for a pinch analysis, the design of heat exchanger networks, hot and cold utility systems, combined heat and power (CHP), refrigeration, batch- and time-dependent situations, and optimization of system operating conditions, including distillation, evaporation, and solids drying. This new edition offers tips and techniques for practical applications, supported by several detailed case studies. Examples stem from a wide range of industries, including buildings and other non-process situations. This reference is a must-have guide for chemical process engineers, food and biochemical engineers, plant engineers, and professionals concerned with energy optimization, including building designers. Covers practical analysis of both new and existing processes Teaches readers to extract the stream data necessary for a pinch analysis and describes the targeting process in depth; includes a downloadable spreadsheet to calculate energy targets Demonstrates how to achieve the targets by heat recovery, utility system design, and process change Updated to include carbon footprint, water and hydrogen pinch, developments in industrial applications and software, site data reconciliation, additional case studies, and answers to selected exercises