CN104562503A

CN104562503A - Wet-hot core mercerization process technology for cotton fabric

Info

Publication number: CN104562503A
Application number: CN201310508132.0A
Authority: CN
Inventors: 李长娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-25
Filing date: 2013-10-25
Publication date: 2015-04-29

Abstract

The invention relates to a wet-hot core mercerization process technology for a cotton fabric. The technology specifically comprises the following steps of inverse sewing, singeing, open-width refining and bleaching, wet cropping, wet cloth feeding, alkali diluting, high pressure mangling (alkali rolling), cloth drum tensioning, high pressure mangling (alkali rolling), cloth drum tensioning, high pressure mangling (alkali rolling), cloth drum tensioning, alkali diluting pre-washing clip tentering, (five-flushing and five-suction), straight roll groove treatment (six-upper and seven-lower alkali removal), alkali-removing steaming box treatment, open washing and wet cropping. By adopting the wet-hot core mercerization process technology for the cotton fabric, problems existing in a wet-wet core mercerization process for a long time are solved in a breakthrough manner, the production quality and production yield are improved on the aspect of efficient mercerization, the heat energy consumption and alkali consumption are greatly lowered, and the economic benefit is increased.

Description

A kind of COTTON FABRIC damp and hot core mercerization technology

Technical field

The present invention relates to a kind of COTTON FABRIC damp and hot core mercerization technology, belong to COTTON FABRIC processing technology field.

Background technology

For traditional COTTON FABRIC, in order to improve its gloss and feel, common alkali mercerization finish, textile pad alkali lye fiber occurs swelling, increases the degree of orientation of fiber under tension, to improve brute force, the cylinder making cotton fiber become smooth, increases the reflection to light, presents silky gloss, reduce fabric shrinkage, and fabric face gauffer can be eliminated.

Mercerising is one of basic operation in dyeing and printing process, and it plays an important role to product quality; Overwhelming majority cotton and BLENDED FABRIC thereof all need to carry out mercerization finish before carrying out dyeing and stamp processing, usual mercerising refers to that cotton and BLENDED FABRIC thereof are when being all subject to some tension through broadwise, with concentrated caustic (NaOH) or other chemicals process, to change the Structure and form of cotton fiber, thus reach the process improving fibre property; Cotton mercerising divides dry cloth mercerising and wet cloth mercerising two kinds, because wet cloth mercerising is containing wet more difficult control, therefore more with dry cloth mercerising.

At present, in energy shortage, energy prices one rise when rising again, tap the latent power in dyeing inside, the energy-saving and cost-reducing target just becoming colourist, mercerising is a critical process in dyeing and printing process, the dry cloth mercerization that domestic general employing is traditional, for reducing last one drying operation, effectively economize energy before dry cloth mercerization.

Summary of the invention

The object of the present invention is to provide a kind of COTTON FABRIC damp and hot core mercerization technology, more to process for COTTON FABRIC to environmental protection.

To achieve these goals, technical scheme of the present invention is as follows:

A kind of COTTON FABRIC damp and hot core mercerization technology, specifically comprises the following steps: turn over stitch → singe → open width refining rinsing → wet cropping → wet cloth enters cloth → light alkali → high pressure mangle (rolling the alkali) → cloth roller → high pressure mangle (rolling alkali) that the stretches tight → cloth roller → high pressure mangle (rolling alkali) that stretches tight → cloth roller that stretches tight → light alkali prewashing leaf cloth gripper tentering (5 punchings 5 are inhaled) → straight roller groove (upper six times seven lixiviatings) → lixiviating steam box → open washing → wet cropping.

After carrying out damp and hot mercerization finish, according to the whiteness of standard method test sample, sedimentation time, wicking and absorption property (barium value method: be the common method checking mercerization effect, barium value is large, and mercerization effect is good; Cotton barium value=100, barium value >150 represents abundant mercerising, is generally 135 ~ 150).

COTTON FABRIC mercerising principle: cotton fiber is after concentrated caustic solution-treated, namely fiber occurs expanded, its diameter increases and contraction in length. and fiber becomes level and smooth cylindricality from original flat, specific to cotton fiber, cell and the natural twist also disappear simultaneously, if timely in addition tension force during process, the little wrinkle of fiber surface disappears, then fiber just shows like silky gloss, after cotton fiber and concentrated caustic solution effects, fiber occurs expanded, generate a kind of new compound, claim alkali cellulose, above compound is all unstable, clear water occurs after washing away alkali forever to separate, alkali cellulose after hydrolysis, be called cellulose hydrate or mercerized cellulose, mercerized cellulose is identical with non-mercerized cellulose chemical composition, crystalline texture is different, claim structural variant, after cellulosic structure variant, performance there is following change:

A) cotton fiber is after mercerising, and crystal region reduces, and amorphous region increases, and improves adsorption capacity, hygroscopicity, the raising of upper dye power;

B) cotton fiber expanded after, morphologic change, is circular by original elliptical deformation, increases, make fabric produce soft gloss to the reflecting effect of light;

C) destruction and reconstruction of hydrogen bond, can improve dimensional stability for fabric.

Current mercerising agent is still based on caustic soda (NaoH), and main cause is that the expanded performance of caustic soda is good, inexpensive, operation also facilitates, and can be divided into shredded dried bean curd light and wet mercerising by processing process difference; Yarn mercerising, fabric mercerising and mariages light can be divided into by mercerising object difference: (one) wets cloth mercerising: wet cloth mercerising major advantage: 1. swelling of fiber foot, inhale alkali even, uniform in quality; 2. good level-dyeing property; 3. cropping door fabric width; 4. front drying plant is saved; 5. semi-products turnover is accelerated; (2) thermokalite mercerising: conventional mercerization is room temperature mercerising (18 DEG C ~ 20 DEG C), and alkali lye is thickness comparatively, not easily permeates, and easily cause " surperficial mercerising ", thick and heavy close weave will obtain evenly thorough effect, and difficulty is larger; Thermokalite good penetrability, but expanded poor, and therefore adopt first thermokalite, the mercerization of rear cold alkali, the infiltration in advance of thermokalite, the continuation being conducive to cold alkali lye is infiltrated, and makes fabric with more alkali number, produces evenly and effectively expanded.

This beneficial effect of the invention is: the establishment of (1) COTTON FABRIC damp and hot core mercerization. its effect can reach good level; (2) technological break-through of COTTON FABRIC damp and hot core mercerising solves the mercerization Problems existing for a long time that wets, and is one of dyeing important step realizing cleaner production; (3) realizing efficient mercerising meaning not only increases the quality of production and production output, also considerably reducing thermal energy consumption and alkaline consumption, improve economic benefit.

Detailed description of the invention

Below in conjunction with embodiment, the specific embodiment of the present invention is described, better to understand the present invention.

Embodiment

The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims

1. a COTTON FABRIC damp and hot core mercerization technology, is characterized in that: specifically comprise the following steps: turn over stitch → singe → open width refining rinsing → wet cropping → wet cloth enters cloth → light alkali → high pressure mangle (rolling the alkali) → cloth roller → high pressure mangle (rolling alkali) that the stretches tight → cloth roller → high pressure mangle (rolling alkali) that stretches tight → cloth roller that stretches tight → light alkali prewashing leaf cloth gripper tentering (5 punchings 5 are inhaled) → straight roller groove (upper six times seven lixiviatings) → lixiviating steam box → open washing → wet cropping.

2. a kind of COTTON FABRIC according to claim 1 damp and hot core mercerization technology, it is characterized in that: after carrying out damp and hot mercerization finish, will according to the whiteness of standard method test sample, sedimentation time, wicking and absorption property (barium value method: the common method being inspection mercerization effect, barium value is large, and mercerization effect is good; Cotton barium value=100, barium value >150 represents abundant mercerising, is generally 135 ~ 150).