浆纱-1-08

• 浆纱主要应用于短纤单纱和无捻长丝纱。
This process is performed on single spun warp yarns and untwisted continuous filament warp yarns.
概述：
二、浆纱目的 —— 提高经纱在织机上的可织性
Objectives —— to adapt warp yarns to weaving on looms.
- 渗透性
Penetration
Penetration of the size into the yarn must be properly controlled.
- 吸湿性 - 均匀性
Hygroscopicity Uniformity
- 浆液粘性
Viscosity
The viscosity of the size mixture directly controls the amount of
penetration at a given temperature and roll pressure. Too little viscosity (too thin a mixture) will give excessive penetration
五、上浆后浆纱性能值得关注的几个指标 - 强力
Tensile strength
The greater the increase in tensile strength, the less
likelihood there will be of a break occurring,
particularly where weak places are excessive.
and the size film will not form the protective film on the outside of
the yarn. The size mix should have enough viscosity so that it will be thick enough to form the film, and at the same time lay the fibres of the yarn properly.
to provide maximum weavability in the warcomponents required to support the warp yarn characteristics;
- 确定助剂种类
to determine formula adjustments or additives which would provide stability, easier preparation, improved application, or formula economy.
subsequent shedding and yarn damage due to clinging.
- 伸长和弹性
Elongation and Elasticity
Elongation is the amount of stretch the yarn will undergo before it breaks.
Every size film must have a film-forming capability that will provide a tough durable and continuous film.
- 毛羽伏贴
Fibre lay
Sufficient cementing action should be exerted by the slashing process so as to lay the fibres close to the yarn itself. The protruding ends of the fibres should be laid against the yarn by the adhesive action of the size. That will greatly diminish or eliminate fibre entanglement between
第三章 浆纱
Sizing (Slashing) Process
概述
Introduction
一、浆纱的原因：Why is the slashing process a necessary
process for woven fabrics production?
- 短纤纱具有毛羽，长丝纱中单丝强力不够将导致织造
1. 调浆 2. 轴架 3. 浆槽
4. 烘燥装置
5. 分绞、卷绕
Warp yarn separation section (lease rods) and headstock.
概述：
概述：
四、配置浆液应考虑的方面：
Considerations for the evaluation of the perfect size formula. - 给予经纱良好的可织性
Elasticity is that property of the yarn which allows it
to return almost to its original length after the stretching tension is released.
- 耐磨性
Abrasion Resistance
- 柔韧性
Flexibility
Sized warp yarns must be able to withstand repeated and extensive bending in the weaving operation without damage to the size film.
Rupture of the film causes increased friction and
and drop wires.
- 粘附性
Adhesion
Adhesion is not only necessary in the fibre-to-fibre
cementing action, but is also important to assure
that the film formed by the size formula will adhere to the fibre substrate and protect the warp yarn in the weaving operation.
时断头增多。
Single spun yarns possess hairy structures. A filament in a
continuous filament yarn is a weak element and may break during
weaving.
浆纱的原因：
- 短纤纱中的毛羽和长丝纱中单丝断头致使经纱相互粘连，由此导致： The hairiness of spun or broken filaments of continuous filament yarn cause clinging of warp yarns which leads to:
1. 织机经纱断头 Warp breaks on most looms. 2. 喷气织机上纬停增加 Warp caused filling stops in air jet looms. 3. 织物疵点 Fabric defects.
总之，这一切影响织造效率和织物质量。 These cause low weaving efficiency and fabric quality.
adjacent yarns in close weaves and reduce the break outs of ends.
Laying the fibre also produces a more compact and smoother yarn which reduces the friction between the yarn and the reed, heddles
说法一：增强、保伸、耐磨。 说法二：耐磨和贴伏毛羽。
三、浆纱工程及其要求
1、浆纱工程：调浆、上浆。Size solution preparing, slashing 2、要求：1）浆纱具有良好的可织性；
to prepare warp yarns for weaving.
2）粘着剂、助剂来源充足，成本低；
sufficient adhesive and additive materials, low costs.
3）易退浆，不污染环境。
easy to desize, no environmental pollution.
浆纱机
组成
A glimpse of slasher
Sizing Machine (Slasher) Elements Size solution preparation and storage. Creel to hold warp beam(s). Size application (size box). Sized warp drying (drying section).
Clinging of Warp Yarns Caused by Hairiness
说明：
• 浆纱是一个“过河拆桥”的工序。
The sizing process is a nonproductive. Size material is added to the yarn during the slashing process on a temporary basis. After weaving, the size material is removed during finishing.