RU90798U1 - COMPLEX SYNTHETIC THREAD, INCLUDING YARN, WITH ANTI-MICROBIAL PROPERTIES - Google Patents

Abstract

1. A complex synthetic thread, including yarn, the filamentation index of which is f 26-96, while an antimicrobial additive is introduced into its composition. ! 2. The thread according to claim 1, characterized in that it is made of polyester filaments or fibers. ! 3. The thread according to claim 1, characterized in that the antimicrobial additive contains silver ions. ! 4. The thread according to claim 1, characterized in that it is made textured. ! 5. The thread according to claim 1, characterized in that the index of its fineness is 2-25 tex.

Description

The utility model relates to textiles, and more specifically to a complex synthetic yarn modified in the process of its production by an additive with antimicrobial action. Such threads can be used in light industry for the manufacture of a hosiery-knit assortment in contact with skin, such as, for example, socks, half-socks (stockings), stockings, tights, etc.

By definition, a textile thread is a flexible, strong body with small transverse dimensions of considerable length. One type of yarn is yarn, which is also defined as a yarn consisting of fibers of a limited length, connected, for example, by twisting. Under the complex thread understand the thread, consisting of two or more elementary threads ("Big Encyclopedic Dictionary. Polytechnic" Scientific Publishing House "Big Russian Encyclopedia", M., 2000, S. 235, 334, 426). Thus, the concept of “thread” includes such a concept as “yarn”.

In medicine, in particular in surgery, the use of suture material or tissue with antimicrobial properties is widely known. Such materials are used both during operations, in particular in endoprosthetics in the manufacture of artificial heart valves, and for the prevention of postoperative purulent complications and the creation of optimal conditions for wound healing.

So, the known technology for producing non-woven textile materials based on synthetic fibers and their mixtures. An antimicrobial organosilicon drug is introduced into this nonwoven material as a fiber polymer modifier (RU 2288983).

An antimicrobial thread is also known, including a core of twisted or braided polyamide filament with a film coating in the form of a copolymer sheath with the addition of an antibiotic (RU 31325).

Due to their functional purpose, special requirements are imposed on antimicrobial threads used in medicine, which are not mandatory for household products, which, in addition to general requirements for increased strength, have their own requirements, for example, such as: color retention and lack of smell. Textile products, especially those that have direct contact with the skin (socks, pantyhose), are negatively affected by various microorganisms located on the skin, including gram-negative and gram-positive bacteria, causing various spots to appear on these products and giving them undesirable odors, as well as their fading, while these microorganisms weaken the strength of the products and cause their cross-contamination.

As analogues of the claimed utility model, the antimicrobial threads (AMY) mentioned in electronic media consisting of polyester and polymer with silver and ceramic components (http://www.robbreport.ru, January 2005) and antimicrobial fibers (AMY) can be considered ), while at the stage of weaving fibers introduced non-migratory silver compound. A fabric with such fibers has antimicrobial properties (http://www.skis.ru; An article by George Dubenetsky dated November 2005).

The given analogues describe the antimicrobial properties of products related to the initial textile materials (thread, fiber), while they do not contain information about the design of the thread itself (yarn).

The technical problem to which the claimed solution is directed is to develop a synthetic thread (yarn) suitable for manufacturing high-performance (air permeability, vapor permeability, lightness, etc.) properties of hosiery products by performing this thread (yarn) complex with a certain degree of filamentation. Along with the above properties, products made of such threads (yarn) have a prolonged antimicrobial effect, which contributes to a significant slowdown in the growth of bacteria harmful to humans on their surface.

The technical problem posed is solved using the following set of features.

A complex synthetic thread, including yarn, is characterized by the fact that its filament index is f 26-96, and an antimicrobial additive is introduced into its composition (in the process of production), in other words, it is modified with an antimicrobial additive.

In an advantageous embodiment of the utility model, the thread, including yarn, is made of polyester filaments (fibers), and the antimicrobial additive (antimicrobial additive) contains silver ions.

Also, polypropylene, polyacrylonitrile or polyamide filament or fiber can be used as the basis of a complex (multifilament) synthetic thread (yarn).

The specified thread (yarn) can be made textured, which will increase the antibacterial properties of a knitted product made from it by increasing the contact area of the threads (fibers) with the skin, adding to this an improvement in the operational properties of the product, in particular, such as elasticity and elasticity.

The fineness of the thread (yarn) lies in the range of values: 2-25 tex.

The basis of the proposed complex thread (yarn) has a multifilament, i.e. consisting of many fine filaments or fibers (a few micrometers thick each), structure. This allows you to increase the performance properties of products made from such a thread or yarn, such as: air permeability, vapor permeability and hygroscopicity. In addition, products from such yarns are characterized by lightness and have good handling properties.

In accordance with the proposed utility model, a synthetic material, such as polyethylene terephthalate (PET), is used as the polyester backbone of the thread (yarn). Unlike natural ones, this thread (yarn) is characterized by significant mechanical abrasion and tear strength, as well as elasticity and biostability.

The filaments or fibers that make up the proposed thread (yarn) have a high modulus of elasticity, due to which the products made from it perfectly retain their shape and restore it even after prolonged exposure to external force, so they do not wrinkle and are stable in shape. The specified thread (yarn) is characterized by a low specific gravity.

The proposed thread (yarn) is resistant to acids and alkalis, as well as oxidizing agents and reducing agents.

Jerseys from these chemically inert threads (yarn) can be worn by the most sensitive (allergic-dependent) people.

The antimicrobial additive (additive) of the thread (yarn) can contain silver in various forms (ions, salts, metal), which enhances the above properties.

An antimicrobial additive, for example, containing silver ions, has multiple effects on bacterial life processes, preventing the growth of fungi, gram-positive and gram-negative bacteria and mold, as well as various infections, thereby improving foot hygiene and reducing the unpleasant odor of sweat. Mentioned additive provides a lasting effect, ease of integration, minimal fading, the absence of friction and clogging during spinning, as well as the absence of mechanical deformation of twisted fibers.

The drawing shows a diagram of a process for producing antimicrobial threads (yarn), dyed in bulk.

Amorphous PET granulate through a transport system is first supplied to a daily container 1, from which it passes through a rotary dispenser 2 to a crystallizer 3, where this granulate is heated by circulating air and thoroughly mixed to prevent the granules from sticking together.

After completion of the crystallization process, the granulate is poured into a vertical shaft dryer 4, from which the dried granulate is piped to a gravimetric unit 5.

Polymer dye concentrate (PAC) and antimicrobial additive (AD) are loaded into the respective containers 6 and 7, of which through conveyors are fed to dryers 8 and 9, and then to the gravimetric unit 5.

From the gravimetric unit 5, the granulate mixture, which includes: PET, PAC and HELL, enters the extruder 10 through a loading funnel, where they are melted and homogenized.

The resulting melt is fed to the molding heads 11, and from there it flows under pressure to the four-chamber spinning metering pumps 12, each of which measures the melt flow into four dies.

Next, the melt is fed by a spinning pump to a spinneret kit, where it is filtered fine. After exiting the spinneret, the melt trickles fall into the blower shaft 13. Due to the difference between the molding speed and the winding speed on the winding heads 14, an elementary thread or yarn fibers are drawn.

Since a bacterium-resistant additive with an antimicrobial effect, containing silver ions, is added to the mass of threads during their formation, and not to their surface, it does not migrate from products to the skin and, therefore, is stored for a sufficiently long time in products made from these threads (yarn ), even after repeated washing of these products.

In order to confirm the antibacterial properties of threads (yarn), several experiments were carried out, in particular, sterility was seeded in accordance with the order of the Ministry of Health of the USSR No. 720.

Made in accordance with the above method, the complex polyester thread was cut into small pieces 1-2 cm long and pulled apart for possible germination of microorganisms.

Sowing was carried out in 3 tubes with thioglycolic medium, 3 tubes with Saburo medium, and 3 tubes with Hottinger sugar broth, placing 4-5 pieces of test material in each. The material was taken in 5 repetitions at different lengths of the thread (upper, lower and from the center). For control, seeding was performed on ENDO, Saburo and blood agar media.

The experimental results are summarized in table 1.

Table 1 to Polyester thread with silver ions about n t repetitions R about l b Thioglycolic 0 0 0 0 0 Wednesday 0 0 0 0 0 0 Saburo 0 0 0 0 0

0 0 0 0 0 0 Sugar Broth 0 0 0 0 0 0 0 0 0 0 0

The strand was also tested for several bacteria. The experimental results are summarized in tables 2 and 3.

table 2 Test bacteria Thread pattern Escherichia coli aureus Staphylococcus A AT FROM BUT AT FROM Polyester thread with silver ions 2 3.6 2.2 2 3.8 2.2

Test bacteria:

Staphylococcus aureus - ATCC ™ 29213

Escherichia coli - ATCC ™ 25922

The number of parallel measurements is three.

And - the specified number of bacteria / ml according to McFarland before inoculation.

B is the average number of bacteria / ml according to McFarland after inoculation without adding strands after 24 hours.

C is the average number of bacteria / ml according to McFarland after inoculation with the addition of threads after 24 hours.

Table 3 Thread pattern Test bacteria Enterococcus faecalis Candida albicans A AT FROM BUT AT FROM Polypropylene thread with silver ions 2 3.2 2.2 2 4.6 2.2

Test bacteria:

Enterococcus faecalis - ATCC ™ 29212

Candida albicans -ATCC ™ 2091

The number of parallel measurements is three.

And - the specified number of bacteria / ml according to McFarland before inoculation.

B is the average number of bacteria / ml according to McFarland after inoculation without adding strands after 24 hours.

C is the average number of bacteria / ml according to McFarland after inoculation with the addition of threads after 24 hours.

Claims (5)

1. A complex synthetic thread, including yarn, the filamentation index of which is f 26-96, while an antimicrobial additive is introduced into its composition. 2. The thread according to claim 1, characterized in that it is made of polyester filaments or fibers. 3. The thread according to claim 1, characterized in that the antimicrobial additive contains silver ions. 4. The thread according to claim 1, characterized in that it is made textured. 5. The thread according to claim 1, characterized in that the index of its fineness is 2-25 tex.