纺织英语-(第三版)(附赠多媒体光盘) 节选

bsp; 本书是在《纺织英语》(第二版)的基础上改编而成的。主要用于高等
院校纺织及相关专业的专业英语教学。书中的课文多精选于英美的原版
教材或杂志，语言流畅，语法规范，内容力求反映纺织技术的*新发展。
书中涵盖了纤维、纱线、织物、纺织品染整、非织造布、时装、复合材料等
内容，并对新型纺织技术做了介绍。根据有关院校使用该教材的反映，对
内容做了部分删改和补充。书中包括了纺织专业常用的基本词汇。
    本书尽管是为高校纺织专业的学生编写的．但也可以作为相关企业
学习英语的教材。对纺织领域有兴趣的读者也可以参考使用。
    欢迎读者对本书提出宝贵意见和建议。
    黄故
    2008年2月
     The book is written based on the Textile Readers (second edition). It is
used for the college students majoring in textiles and related majors. The
context is carefully selected mainly from books and journals published in the
United States and the United Kingdom. Each text reads easily and smoothly
with standard expressions. The book covers fibers, yams, fabrics, textile
dyeing and finishing, nonwovens, fashion, composites, and new textile
technology is also included, which reflects the newest development in the
textile field. It is revised based on the suggestions raised from different
readers. Words selected in the book are sufficient for daily use on textile
communication.
    Although the book is prepared for the college students, it can also be used
as training materials for enterprises. Those who are interested in the textiles
may use the book as reference.
    All suggestions for improvement are cordially welcome.
                                                                  Huang Gu
                                                                   Feb, 2008

  Lesson Thirty
            Some Considerations in Sizing
     For a size formula to approach perfection in a given application, it should have several basic
characteristics which will serve to eliminate warp breaks during weaving. Defects in the warp yam
such as knots, crossed ends, slubs, weak spots, etc., must be overcome as much as possible by the
size film. Even the strongest of warp yams, such as filament nylon, and even woven wire will
kink and encounter quality problems. For the size fdm to accomplish its primary tasks one would
have to consider the following:.
Tensile strength
     The tensile strength of the yam must be increased by the fiber-to-fiber cementing of the size
film, as well as by the addition of the strength of the film itself.
     Logically, the greater the increase in tensile strength, the less likelihood there will be of a
break occurring, particularly where weak places are excessive.
Adhesion
     Adhesion is not only necessary in the fiber-to-fiber cementing, but also important to assure
that the film formed by the size formula will adhere to the fiber substrate and protect the warp
yam in the weaving operation.
Flexibility
     This property is particularly important in weaving. Sized warp yams must be able to
withstand repeated and extensive bending in the weaving operation without damage to the size

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