CN103966768A - Production technology for hot-rolled non-woven cloth capable of being broken up by water - Google Patents

Abstract

The invention discloses a production technology for hot-rolled non-woven cloth capable of being broken up by water. The production technology comprises the steps of unwinding and feeding, low-temperature hot rolling and winding and is characterized in that cellulose base fiber is selected to prepare non-woven cloth; a high-precision sensor is adopted for controlling tension in the step of unwinding and feeding, and the unwinding tension is controlled within range of 0.1-0.6 bar; in the step of low-temperature hot rolling, rolling points are arranged lengthways, the temperature range of rollers is 70-100 DEG C, and the range of rolling force is 2.5-4.2 MPa; a high-precision sensor is adopted for controlling tension in the step of winding, and the winding tension is controlled within the range of 0.1-0.6 bar. The production technology can be used for preparing non-woven cloth, which touches soft, is low in cost and has the characteristics of degradability and capability of being broken up by water.

Description

Hot rolling can be broken up the production technology of non-weaving cloth

Technical field

The present invention relates to a kind of production technology of non-weaving cloth, the production technology of the non-weaving cloth that particularly a kind of hot rolling can be broken up.

Background technology

The quantity such as the solid waste producing in city dweller's house refuse, TRADE REFUSE, municipal maintenance and management at present sharply increase, wherein traditional spunlace non-woven cloth product just occupies the quite large ratio that obtains, as the disposable wet tissue of daily consumption maximum, life and industrial wiper and Dispoable medical protective clothing etc.Their main component is taking terylene as main chemical fibre, cannot natural degradation in environment after use abandons or break up, not only destroy the approach that soil texture and crop absorb moisture and nutritional labeling from soil, and affected agricultural production, brought serious pollution to environment.In order to address this problem, now market also has that one can be broken up, degradable wet tissue, this wet tissue is to produce through water jet process by wet papermaking or air lay with the viscose glue below 17mm or long fluff pulp fibers again, its complicated technique has determined that its production capacity is lower, but percent defective is higher, and production cost is higher.For making up above-mentioned deficiency, adopting the mode of special hot rolling that conventional hydro-entangled non-woven fabric is processed into the environment-friendly products that can break up is the main paties that address this problem.But the broken up product of existing spunlace non-woven wiper and toilet paper classification exists following problem:

First, conventional Hydroentangled product is mixed into raw material with 30-50mm viscose glue, terylene substantially, and as disposable wiper, the processing after it is discarded is more difficult, in natural environment, cannot degrade, and causes reject product to bring waste pollution to environment;

Secondly, the wipe product of health stationery, though have the characteristic that can scatter under impact of water effect, it falls, and suede is serious and use is powerful limited, the brute force being used under hygrometric state by it is lower, easily distortion.

Therefore need now a kind of production technology or production method of the novel non-weaving cloth breaking up that can address the above problem.

Summary of the invention

The present invention is in order to solve the existing above-mentioned deficiency of prior art, and proposition one can be prepared soft, with low cost, and the production technology that has degradable, can break up the non-weaving cloth of characteristic.

Technical solution of the present invention is: a kind of hot rolling can be broken up the production technology of non-weaving cloth, comprises that debatching is broadcasted, Low Temperature Hot Rolling and coiling step, it is characterized in that:

Select cellulose fibre to carry out the preparation of non-weaving cloth,

Described debatching is broadcasted in step and is adopted high-precision sensor to carry out tension force control, and debatching tension force is controlled within the scope of 0.1-0.6bar,

In described Low Temperature Hot Rolling step, roll a longitudinal arrangement, the temperature range of roll is 70-100 DEG C, and roll-force scope is 2.5-4.2Mpa,

In described coiling step, adopt high-precision sensor to carry out tension force control, Winding Tension Controlling is within the scope of 0.1-0.6bar.

Compared with the existing technology, tool has the following advantages in the present invention:

The present invention stings concretion technology by water to combine with hot rolling technology, be about to fully fixed spun laced fabric, carry out hot rolling by the roll that rolls a longitudinal arrangement, cut off fixed part fiber, ensure to roll rear spun laced fabric simultaneously and meet the powerful requirement of use and the requirement that can break up, utilize hydro-entangled non-woven fabric tool prepared by this kind of method to have the following advantages:

The first, because the fiber adopting is cellulose fibre (as sky silk, viscose glue, fluff pulp fibers etc.), this fibrid can be degradable, thereby the final product obtaining has 100% natural degradation function equally, to environment without any pollution.

Second, because non-weaving cloth is after hot rolling, fiber shortens, thereby use brute force higher, and there is the performance that can break up simultaneously, can be used as disposable erasing product, after use, directly abandon in toilet or other municipal water treatment systems, can under the effect of impact of water, directly break up out not blocking pipe

The 3rd, the more fluffy softness of product feel and the good water absorption that adopt this production technology to prepare.

Therefore this production technology has possessed multiple advantage, is particularly suitable for applying in the art, and its market prospects are very wide.

Detailed description of the invention

The specific embodiment of the present invention will be described below.

Hot rolling can be broken up a production technology for non-weaving cloth, comprises that debatching is broadcasted, Low Temperature Hot Rolling and coiling step, and it selects cellulose fibre to carry out the preparation of non-weaving cloth,

By entering Hydroentangled spun laced fabric, broadcast by uncoil-stand; Because its tension fluctuation has obvious impact to follow-up hot rolling technology: as overtension, when hot rolling, product easily stretches and opens, cause product fracture; As too small in tension force, when hot rolling, product is easily pleating; Therefore broadcast in step and adopt high-precision sensor to carry out the control of tension force in debatching, debatching tension force is controlled within the scope of 0.1-0.6bar;

Spun laced fabric after broadcasting by uncoiling machine is directly entered in the middle of two rollers up and down in hot-rolling mill, and top roll is flower roller, and rolling of colored roller used in the present invention is some longitudinal arrangement (it is some arranged askew that conventional roll rolls), and lower roll is smooth roll.For ensureing that product has the brute force of use, there is again the performance that can break up, hot-rolled temperature will be controlled at 70-100 DEG C, and roll-force is controlled at 2.5-4.2Mpa;

Through the product introduction lapper of hot rolling, due to after hot rolling is processed, the fiber of product shortens, the brute force of cloth decreases, thereby the tension force control of rolling is suitable, avoid stretching excessive and cause fracture, adopting high-precision sensor to carry out the control of tension force in this step, its tension range is within the scope of 0.1-0.6bar.

Utilize the grammes per square metre scope of the prepared product of production technology of the present invention at 30-70 g/m ².It and the common Hydroentangled product (contrast piece 1) of producing with the long viscose of 38mm of traditional employing 100% and as shown in table 1 with the performance comparison of the paper for daily use product that can break up (contrast piece 2):

Table 1

Remarks: " evaluating the directive document of the flushable property non-woven cloth products " standard that can break up performance and meet non-woven TIA (INDA) and the establishment of the European non-woven TIA in the world (EDANA);

Conclusion in sum: same 45g/m ²product, the water absorbing properties of the embodiment of the present invention is better than other two kinds of products; Wet powerful (using powerful) differs less with the common Hydroentangled product (contrast piece 1) that the long viscose of 38mm of tradition 100% is produced, but is better than the paper for daily use product (contrast piece 2) that can break up; And there is the performance that can break up.

Claims (1)

1. hot rolling can be broken up a production technology for non-weaving cloth, comprises that debatching is broadcasted, Low Temperature Hot Rolling and coiling step, it is characterized in that:

Select cellulose fibre to carry out the preparation of non-weaving cloth,

Described debatching is broadcasted in step and is adopted high-precision sensor to carry out tension force control, and debatching tension force is controlled within the scope of 0.1-0.6bar,

In described Low Temperature Hot Rolling step, roll a longitudinal arrangement, the temperature range of roll is 70-100 DEG C, and roll-force scope is 2.5-4.2Mpa,

In described coiling step, adopt high-precision sensor to carry out tension force control, Winding Tension Controlling is within the scope of 0.1-0.6bar.