CZ5962U1 - Knotted sorptive cloth - Google Patents

Description

for liquid sorption.

BACKGROUND OF THE INVENTION

For the sorption of oils, organic liquids, in particular hydrocarbons, aqueous solutions of working liquids, non-woven fabrics of melt-blown microfibers in the weight range of 80 g / m ² to 400 g / m ^{2 are used} . To achieve maximum sorption capacity, bulky non-woven fabrics are needed, i.e., nonwoven fabrics. low density nonwoven fabric, which results in lower tensile strength and low abrasion resistance of the fiber surface layers. The tensile strength is currently increased by thermal point bonding on engraved calenders, where at the point of bonding the microfibers are at least partially transferred to the foil by heat and pressure. Calendering can be used to treat non-woven fabrics of microfibres with a basis weight up to 150 g / m ² , which is technological and economical upper limit. When treating microfibre nonwovens with a basis weight of over 100 g / m ^2, there is a risk of surface hardening after contact with the tempered metal rollers of the calender.

There are known textile articles intended for cleaning such as rags, dusters, cleaning fabrics, produced on interlocking or quilting machines. Generally, a loose-laid fiber formation, such as a web, is reinforced by means of one or two sets of warp yarns by a known warp knitting weave. The web of natural and / or chemical staple fibers is prepared on carding machines or pneumatic web formers, in this way fibers with a densities of more than 1 dtex can normally be processed.

The disadvantage is that due to the large fiber space and small capillary forces, the nonwoven staple fibers do not achieve the sorption capacity of the melt-blown nonwoven microfibers.

The technical solution for the sorption tarpaulin utilizes the thermal, chemical or mechanical connection of the system of impermeable and sorption layers in one unit.

The disadvantage of the solution is the limited manipulability and usability of the body having one of the liquid impermeable surfaces.

The essence of the technical solution

The essence of the interwoven sorption fabric is that it consists of at least one layer of melt-blown microfiber nonwoven mechanically reinforced by interweaving in an area by one or more sets of binder warp yarns that form stitch pillars alternately and / or sequentially intertwined by the interlocking connecting loops.

-1GB 5962 Ul

The melt-blown microfibre nonwoven is made of polypropylene, polyester (PET, PBT), polyethylene (LLDPE, LDPE, HDPE), polyamide (6, 6.6, 11, 12), the diameter of the individual fibers is in the range of 0.5 to 10 μιη.

Silk or yarn of polypropylene, polyester, polyamide, cotton, viscose or a fiber mixture thereof is used as binder yarn.

For weaving, basic warp knitting is used, ie, a chain, leotard, cloth, atlas, or a combination thereof, with a column density of 100 mm ranging from 10 to 60 and a row density of stitches of 100 mm ranging from 15 to 100.

The advantages of the interwoven sorbent fabric are mainly the possibility of re-use due to increased tensile strength and reduced delamination of the microfiber surface layers.

Examples

Example 1

The interwoven sorption fabric consists of a non-woven fabric of melt-blown polypropylene microfibers of 200 g / m ² , interwoven with a polyester dye of 110 dtex in chain-cloth, the density of the stitches / number of posts per 100 mm / 20 and the stitch row density / number of rows per 100 mm / is 50.

Example 2

The sorption fabric is a non-woven fabric of polyethylene terephthalate microfibers of the melt-blown type with a basis weight of 150 g / m ² , which is interwoven with a 80 dtex polyester silk chain weave, the stitch column density is 25 and the stitch row density is 60.

Example 3

The sorption fabric is based on two layers of non-woven fabrics made of polypropylene microfibers of the melt-blown type, both of which have a basis weight of 200 g / m ² and are joined to each other by the reverse sides. The interlacing is performed with a 180 dtex polyester yarn with a chain-four-line atlas, with a stitch column density of 13 and a stitch row density of 17.

Example 4

The interwoven sorbent fabric is identical to Example 1, but a cationic wetting composition is deposited on the surface of the melt-blown polypropylene microfibers.

Industrial applicability

Interwoven melt-blown microfibre sorbent fabrics can be used wherever oil products, solvents, acids, lyes and emulsions are handled, as well as household rags.

-2GB 5962 Ul

Claims (4)

CLAIMS FOR PROTECTION 1. A sorbed absorbent fabric, in particular for absorbing liquids, characterized in that it comprises at least one layer of melt-blown nonwoven fabric intertwined in the surface by one or more sets of warp threads forming stitches of stitches alternately and / or successively connected in the direction of the width of the braid by the back loops. 2. The interwoven sorption fabric of claim 1 wherein the weight of the melt-blown nonwoven fabric ranges from about 20 g / m ² to about 20 g / m ^2. 500 g / m ² . 3. The entangled sorption fabric of claim 1, wherein the weave bonding in the nonwoven web is a tricot, cloth, atlas, or combination thereof. The entangled sorption fabric of claim 1, wherein the stitch density of the stitches per 100 mm is in the range of 10 to 60 and the stitch density of the stitches per 100 mm is in the range of 15 to 100. End of document