WO2021126132A1

WO2021126132A1 - A sock structure with cellulosic acetate sustainable content

Info

Publication number: WO2021126132A1
Application number: PCT/TR2020/051322
Authority: WO
Inventors: Şeyma Nur TEKİN
Original assignee: Bony Teksti̇l İşletmeleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇
Priority date: 2019-12-18
Filing date: 2020-12-18
Publication date: 2021-06-24

Abstract

The invention relates to a sock that is preferably knitted with a recycle gimped yarn containing at least 60% cellulose acetate yarn and comprises a reinforced sole (11), a reinforced toe (12), a forefoot part (13), a rear foot part (14) and a stocking (15).

Description

A SOCK STRUCTURE WITH CELLULOSIC ACETATE SUSTAINABLE CONTENT

Technical Field

The present invention relates to a sock structure that is made of yarns made of cellulosic acetate fibers with biodegradable feature that can breathe, feel cool and soft sense and have antibacterial, hypoallergenic properties.

Present State of the Art

Socks are mainly defined as a cloth that is worn on the feet and they can vary based on usage areas. Shoes are structures subject to long-term use in products such as shoes, boots, slippers etc. by the users during the day. Since the socks stay on the foot for a long time and in a closed condition and physiological perspiration of the human body occurs, it creates a feeling of discomfort in the users. Even in some cases, it may cause dangerous situations regarding the foot health.

Due to these reasons, the yarns used in the production of socks are selected from the natural fibers that provide moisture transfer and comfort. Cotton is the most preferred fiber used in the production of socks. However, processing the cotton and particularly dyeing the same cause consumption of high amounts of water and energy. Moreover, the chemicals used during dyeing processes cause environmental pollution and create risk in terms of human health.

As a result, due to the abovementioned disadvantages and the insufficiency of the current solutions regarding the subject matter, a development is required to be made in the relevant technical field.

Brief Description of the Invention

The present invention is related to a sock structure with cellulose acetate content which fulfills the abovementioned requirements, eliminates all disadvantages and brings some additional advantages. The main aim of the present invention is to provide a sock structure that is made of yarns made of cellulosic acetate fibers with sustainable and biodegradable feature that can breathe, feel cool and soft sense and have antibacterial, hypoallergenic properties.

An aim of the invention is to provide a sock structure manufactured from a raw material obtained by a production process that does not create risk in terms of environmental pollution and human health.

Another aim of the invention is to provide a sock structure whose production does not cause extra energy and water consumption.

In order to fulfill the abovementioned aims, the invention relates to a sock that consists of a reinforced toe, a reinforced sole, a forefoot section and a rear foot section and a stocking. Accordingly, said sock comprises a recycle gimped yarn preferably containing 60% cellulose acetate, 30% recycle polyester, 3% elastane and 7% polyamide so as to form the structure of said sock (10).

In order to fulfill the aims of the invention, said cellulose acetate yarn is preferably 150/38^*2 denier and 300/76^*2 denier.

In order to fulfill the aims of the invention, said cellulosic acetate yarn is used preferably in two layers and/or by twisting the same with nylon 70 denier yarn at said reinforced sole and reinforced toe.

The structural and characteristic features of the present invention will be understood clearly by the following drawings and the detailed description made with reference to these drawings and therefore the evaluation shall be made by taking these figures and the detailed description into consideration.

Figures Clarifying the Invention

Figure 1 is a general view of the inventive sock structure.

The figures are not required to be scaled and the details which are not necessary for understanding the present invention may be neglected. Moreover, the elements that are at least substantially identical or have at least substantially identical functions are shown by the same number.

Description of the References

10 Sock

11 Reinforced Sole

12 Reinforced Toe

13 Forefoot section

14 Rear Foot Section

15 Stocking

Detailed Description of the Invention

In this detailed description, the inventive sock (10) is described only for clarifying the subject matter in a manner such that no limiting effect is created.

The general view of the inventive sock (10) is given in Figure 1 and the sock (10) mainly consists of a reinforced sole (11), a reinforced toe (12), a forefoot part (13), a rear foot part (14) and a stocking (15). The sock (10) is produced in Lonati sock knitting machines, said reinforced sole (11) and reinforced toe (12) sections are made reinforced with the use of double-layer yarn and/or preferably with the yarn obtained by twisting 70 denier nylon yarn. The reinforced sole (11) and reinforced toe (12) sections are formed by taking high wearing possibility on the sock (10) into consideration. The sock (10) obtained as a result of knitting process is also processed with solvents so as to give oil and dirt repellent features.

The sock (10) is provided from a recycle gimped yarn that has preferably 150/38^*2 denier and 300/76^*2 denier fineness and preferably contains 60% cellulose acetate (Naia™), 30% recycle polyester, 3% elastane and 7% polyamide. Cellulose acetate yarns are obtained by means of regenerating cellulose obtained from eucalyptus and pineapple. Naia yarn is a thermoplastic yarn and it has a structure close to FOY (fully oriented yarn). The yarn is provided by drawing the melt from the jet and subsequently mixing the filaments by blowing air with the air jet. Adherence and drawing between filaments is provided by mixing the filaments with air. Naia has dehumidification capacity in a ratio of 6,5% under standard laboratory conditions and this value can increase up to 13% when it remains within a very humid environment. Dehumidification capacity is 8,5% in cotton, 11% in floss and less than 1% in polyester. Therefore, dehumidification capacity equivalent to the cotton can be obtained in the sock (10) structure. Naia is dyed with disperse dyestuff. Naia has a more uniform dye intake compared to floss and it is an environmentally friendly fiber in both yarn production and fabric dyeing processes again compared to floss. Therefore, the disadvantageous conditions experience in dyeing processes in the production of the sock (10) are eliminated by using cellulose acetate yarns.

The cellulose acetate (Naia) is biodegradable in water and soil. The biodegradation of the cellulose acetate in sweet water is in a ratio of 90% at 21 degrees in 56 days. Its dissolution in the soil realized within 2 years and it does not give any damage to the soil during this period and even plant can be grown thereon. Cellulose acetate can also be dissolved industrially. In this context, biodegradation realized within 26 weeks. The degradation and deterioration of filaments take up to 12 weeks. The obtained decayed material does not contain significant amounts of heavy metal or toxic substance and can be used for growing plants without any harmful condition.

It is explicit that cellulose acetate provides advantages in the production of sock (10) compared to cotton etc. natural fibers and regenerated cellulose fibers in terms of energy and water consumption in the production and also environmental pollution and human health risks. Moreover, the usage of the sock (10) is preferred since it exhibits sufficient performance in breathing capability, feeling of coolness, feeling of softness, antibacterial and hypoallergenic features.

Claims

1. A sock (10) comprising a reinforced sole (11), a reinforced toe (12), a forefoot part (13), a rear foot part (14) and a stocking (15), characterized by comprising a gimped yarn preferably containing 60% cellulose acetate, 30% recycle polyester, 3% elastane and 7% polyamide to form the structure of said sock (10).

2. The sock (10) according to claim 1 , characterized in that; said cellulosic acetate yarn is preferably 150/38 denier and 300/76 denier.

3. The sock (10) according to claim 1 , characterized in that; said cellulosic acetate yarn is used preferably in two layers and/or by twisting the same with nylon 70 denier yarn at said reinforced sole (11) and reinforced toe (12).