The Preparation of Plantation Rubber

CHAPTER XX

SPECIAL METHODS OF PREPARATION

Da Costa process--Byrne curing process--Freezing process-- Wickham process--Derry process--Spontaneous coagulation-- Definition of--Discussion of types--AErobic--Anaerobic-- Organisms--Maude-Crosse patent--Method of operation-- Accelerating action of sugars--Accelerating action of soluble calcium salts--Ilcken-Down process--Slab rubber 290

PART VI VULCANISATION

CHAPTER XXI

INTRODUCTORY DEALING WITH TREATMENT AND VULCANISATION

Wild rubber contrasted with plantation rubber--Milling and mixing--Preparation for vulcanising--Vulcanising 301

CHAPTER XXII

TESTING OF PLANTATION RUBBER

Tests on raw rubber--Breaking strain--Behaviour of rubber during milling, etc.--Preparation for testing--Tests on vulcanised rubber--Choice of a formula--Physical tests 309