JP4044679B2 - Textiles and textile products - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fiber and a fiber product that have an effect of improving blood circulation and suppressing rash, such as sanitary materials such as paper diapers, sanitary napkins, bandages, gauze, disposable underwear, wet tissue, cosmetic puffs, etc. The present invention relates to fibers and fiber products suitable for personal wipers and the like.
[0002]
[Prior art]
Conventionally, rashes have been regarded as important in textile products that come into contact with the human body, such as paper diapers and sanitary napkins. In particular, the cause of diaper rashes is the growth of various bacteria such as Candida spp. Diaper breathability (sweat such as sweat), friction with surface paper, urine, chemical reaction due to contact with stool, etc. are considered. Above all, the propagation of bacteria is regarded as important, and attempts have been made to prevent diaper rash by suppressing these propagations.
[0003]
For example, Japanese Patent Application Laid-Open No. 61-28078 proposes a cloth or paper product coated with Kumazasa, pearl barley and other plant extract oils. JP-B 63-54013, JP-A 63-175117, and JP-A 1-250413 disclose fibers imparted with antibacterial properties by ion dissociation of an antibacterial metal supported on zeolite, and fibers. A product has been proposed. In addition, antibacterial properties are imparted using biguanite derivatives and organic silicon quaternary ammonium salts. In addition to the above, there are also examples of using antibacterial agents extracted from natural products in consideration of effects on the human body. JP-A-5-5274 discloses a deacetylated product of chitin, and JP-A-9-108261 uses an inclusion of glycyrrhizin or phytoncide in cyclodextrin to provide antibacterial, antifungal and deodorizing effects. Has proposed to control diaper rash.
[0004]
[Problems to be solved by the invention]
However, the following problems are mentioned in the above-mentioned fibers and fiber products. For example, in Japanese Patent Application Laid-Open No. 61-28078, most of the tocopherol homologues extracted from natural products (about 60 to 80% or more) are γ type, and in fact, there are many α types having biological activity in vivo. Both are about 20%, which is not sufficient for suppressing rash. Furthermore, by containing fats and oils (linoleic acid), oxidative degradation may occur due to light (ultraviolet rays) and the like, which may induce oxidation of lipids in the skin and lipid peroxides. In addition, even if the textile products containing antibacterial substances have the effect of suppressing the growth of bacteria, etc., no measures have been taken for the cause of essential diaper rash, and the effect is not sufficient. .
[0005]
The present invention has been made in view of such circumstances, such as paper diapers, sanitary napkins, bandages, gauze and other sanitary materials, disposable underwear, wet tissues, cosmetic puffs, etc. that improve blood circulation and are effective against rashes. It is an object of the present invention to provide fibers and fiber products suitable for interpersonal wipers and the like.
[0006]
[Means for Solving the Problems]
The fiber of the present invention is a fiber in which a tocopherol homologue is attached to at least a part of the surface of a single fiber. Among the tocopherol homologues, α-type tocopherol is 0.01 to 0.5 with respect to 100 parts by weight of the fiber. It is characterized by adhering to a weight part. By adopting such a configuration, it is possible to suppress diaper rash internally by promoting the inner surface of the human body, that is, blood circulation, and suppressing oxidative deterioration of the skin surface, rather than suppressing diaper rash due to external factors. As a result, the present invention has been achieved.
[0007]
In the fiber of the present invention, among the tocopherol homologues, the α-type tocopherol / remaining tocopherol homologue weight ratio is preferably 2/8 to 7/3.
[0008]
In the fiber of the present invention, it is desirable that the hydrophilic fiber treating agent other than the tocopherol homolog is attached in an amount of 0.1 to 1 part by weight with respect to 100 parts by weight of the fiber.
[0009]
And the fiber product which consists of a fiber of this invention accelerates | stimulates the blood circulation of a human body, the oxidative degradation of the skin surface is suppressed, and it contributes to suppression of a rash, such as a diaper.
The contents of the present invention will be specifically described below.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The fiber of the present invention is not particularly limited as long as it has a fiber form. For example, regenerated fiber such as rayon, acrylic fiber, polyamide fiber such as nylon 6, nylon 66, polyethylene terephthalate, polybutylene terephthalate. Polyester fiber such as polyethylene fiber, long fiber such as polyolefin fiber such as polyethylene and polypropylene, or short fiber, and the fiber shape is not particularly limited. Single fiber, core-sheath type composite fiber, split type composite fiber Any of a fiber having a modified cross section, a hollow fiber and the like may be used.
[0011]
For example, when the fiber of the present invention is used for a surface sheet for sanitary materials, polypropylene / polyethylene, polyethylene terephthalate / polyethylene, polypropylene / ethylene-propylene copolymer, polyethylene terephthalate / ethylene-propylene copolymer, etc. A heat-adhesive core-sheath type composite fiber or a split type composite fiber made of a combination is suitable.
[0012]
Further, the fineness of the fiber of the present invention is not particularly limited, and may be appropriately set according to the use. However, when used as a surface sheet, the texture is emphasized, and 2 to 6 dtex is preferable.
[0013]
The fiber product in the present invention may be any fiber product as long as it has a form composed of single fibers such as a nonwoven fabric, a net-like material, and a knitted fabric, and a fiber product may be obtained from a fiber to which a tocopherol homolog is previously attached. And after processing an untreated single fiber into a fiber product, you may process so that a tocopherol homologue may adhere to at least one part of the single fiber which comprises a fiber product. When the fiber product is, for example, a non-woven fabric, the form of the constituent fiber web is not particularly limited, and includes a parallel web composed of staple fibers, a cross web, a semi-random web, a long fiber web composed of continuous filaments, and a short fiber. Wet paper-made webs, air laid webs, melt blown nonwoven fabrics and the like can be arbitrarily used. If emphasis is placed on the texture and flexibility of the nonwoven fabric, a fiber web made of staple fibers is preferred.
[0014]
It is not particularly limited in the processing method of the nonwoven fabric, and it is possible to adopt a known method such as a thermal bond method including a hot air spray method, a hot roll method, a spun bond method, a wet paper making method, a needle punch method, a spun lace method, Any selection may be made. In particular, for surface sheets of sanitary materials (especially infant diapers), thermal bond nonwoven fabrics with good texture are generally used in consideration of rubbing due to friction with the skin. The core-sheath type composite fiber is suitable. In the spunbond method, wet papermaking method, spunlace method, and the like, it is preferable to spray or impregnate the tocopherol homologue prepared by post-processing after manufacturing the nonwoven fabric in the manufacturing process.
[0015]
The basis weight of the fiber web is not particularly limited. For example, in the case of a sanitary material surface sheet, a basis weight of about 15 to 40 g / m ² is preferable.
[0016]
In the fibers and fiber products, the tocopherol adhering to at least a part of the surface of the single fiber is generally obtained by extraction, purification, and concentration from soybean oil or rapeseed oil, and α-type, β-type, It is formed by γ-type and δ-type tocopherol homologues. And in this invention, it is preferable that (alpha) -type tocopherol adheres 0.01-0.5 weight part with respect to 100 weight part of fibers among tocopherol homologues. If the adhesion amount of α-type tocopherol is less than 0.01 parts by weight, rash suppression cannot be said to be sufficient, and if it exceeds 0.5 parts by weight, a significant difference cannot be confirmed, resulting in high costs and This is a disadvantage in balance.
[0017]
In addition, the remaining homologues β-type, γ-type, and δ-type tocopherols can be used to suppress the oxidation of the fiber treatment agent and prevent spoilage, thereby reducing the running cost of the fiber treatment agent. convenient. In the present invention, among the tocopherol homologues, the weight ratio of α-type tocopherol / remaining tocopherol homologues is preferably 2/8 to 7/3. More preferably, it is 3/7 to 5/5. When the weight ratio is less than 2/8, it is a general ratio contained in natural vegetable oil. When the ratio of α-type tocopherol decreases, the biological activity decreases, and when the weight ratio exceeds 7/3, This is because there is a risk that antioxidant inhibition will occur outside the living body, that is, in the fiber treatment agent, and the cost will be high.
[0018]
Further, among the remaining tocopherols, γ-type tocopherol and δ-type tocopherol are particularly effective in suppressing oxidation of the fiber treatment agent, and α-type tocopherol / {γ-type tocopherol and / or δ-type tocopherol} / weight of the remaining tocopherol homologue. The ratio is preferably 2/7/1 to 7/3/0.
[0019]
In addition to the tocopherol homologue which is the main component of vitamin E, another drug may be added. For example, vitamin A such as vitamin A and vitamin C other than vitamin E can be mentioned, and vitamin A is particularly preferable because it can increase the absorption efficiency of the tocopherol homologue.
[0020]
Next, the manufacturing method of the fiber and fiber product of this invention is demonstrated. First, tocopherol homologues (α-type, β-type, γ-type, and δ-type) are prepared at a predetermined ratio. And since the prepared tocopherol homologue is oily, it can be added to a normal fiber treatment agent by emulsifying with a known emulsifier, and can be easily dissolved. Thereby, in the manufacturing process of the conventional chemical fiber and synthetic fiber, a desired tocopherol homologue can be adhered to the single fiber surface very easily. The fiber treatment agent used at this time may be any, but when it is a hydrophilic fiber treatment agent, for example, when used for a surface sheet of an absorbent article, it has excellent liquid permeability and absorbs liquid. It is excellent in that it can be quickly transferred to. The adhesion amount of the hydrophilic fiber treatment agent is preferably 0.1 to 1 part by weight with respect to 100 parts by weight of the fiber. If the adhesion amount is less than 0.1 parts by weight, static electricity is easily generated, the processability is inferior, and sufficient hydrophilic performance cannot be obtained. If the amount of adhesion exceeds 1 part by weight, not only the opening failure in the card process is likely to occur, but also the cost increases.
[0021]
The tocopherol homologue can be attached by spraying and / or impregnating after drawing at the time of fiber production, or after processing a fiber product after attaching a normal fiber treatment agent or obtaining an untreated fiber. it can. Tocopherol homologues are excellent in thermal stability, and are stable even in the non-woven fabric processing temperature range when used as a drying process or heat-adhesive fiber after the fiber treatment agent is adhered. It is also superior in terms of cost.
[0022]
【Example】
Hereinafter, the contents of the present invention will be described with reference to examples.
[Example 1]
First, it prepared so that the hydrophilic fiber processing agent which has phosphoric acid ester potassium salt as a main component might be 1.5% of pure content in a finishing treatment oil agent tank. Then, tocopherol homologue prepared and emulsified so that α type / β type / γ type / δ type = 50/2/45/3 by weight ratio is added to the finishing oil tank, and The mixture was prepared so that the content was 0.1%.
[0023]
Next, melt spinning was performed using a circular core-sheath type nozzle in which polyethylene terephthalate as a core component and high-density polyethylene as a sheath component were arranged at a volume ratio of 1/1 to obtain an undrawn yarn having a fineness of 6 dtex. Next, the undrawn yarn is drawn 3 times in warm water at 80 ° C., and the drawn yarn is continuously immersed in a finishing oil tank prepared in advance, and 15 crimps / 25 mm of machine crimps by a staffin box type crimper. In the ratio of This was dried with a hot air dryer at 110 ° C. for 15 minutes to remove moisture, and then cut into a fiber length of 51 mm to obtain staple fibers having a fineness of 2.2 dtex.
[0024]
100 g of the obtained staple fiber was sampled, and the contained oil and tocopherol homologues were extracted with a 1: 1 mixed solvent of chloroform and methanol, and the total adhesion amount of the tocopherol homologues and the adhesion amount of each homologue were measured by liquid chromatography. Was identified. As a result of calculating from the peak area of the chart, the total adhesion amount of the tocopherol homologue to the single fiber surface was 0.05 part by weight. The adhesion rates of the homologues were 0.03 parts by weight and 0.02 parts by weight, respectively, α-type and γ-type. The β type and δ type were too small to be detected.
[0025]
[ Comparative Example 1 ] The same as Example 1 except that the ratio of the tocopherol homologue was α-type / γ-type = 90/10, and the pure content of the tocopherol homologue in the finishing oil tank was 0.8%. Staple fibers were obtained by the method. As a result of measuring the adhesion amount of the tocopherol homologue, they were 0.30 parts by weight and 0.03 parts by weight, respectively.
[0026]
[Comparative Example 2 ] Staple fibers were obtained in the same manner as in Example 1 except that the tocopherol homologue was not used.
[0027]
[Comparative Example 3 ] As a tocopherol homologue, the ratio as it is contained in soybean oil without preparation, α-type / β-type / γ-type / δ-type = 10/0/60/30, Staple fibers were obtained by the same method as in Example 1. As a result of measuring the adhesion amount of the tocopherol homologue, the α-type, β-type, γ-type, and δ-type were 0.005 parts by weight, 0, 0.035 parts by weight, and 0.01 parts by weight, respectively.
[0028]
A fiber web having a basis weight of 20 g / m ² was prepared from the staple fibers obtained in Examples and Comparative Examples using a parallel card, and then heat treated at 140 ° C. for 5 seconds with a hot air processing machine to obtain a thermal bond nonwoven fabric. When evaluating each nonwoven as a surface sheet of paper diaper, particularly Oite in Example 1, without occurs skin rash, sufficient effect was obtained. In addition, Example 1 contains α-type tocopherol / γ-type and δ- type tocopherol / other tocopherols in a ratio of 50/48/2, so that oxidation is suppressed even when the fiber treatment agent is stored for a long period of time. There was no corruption.
[0029]
【The invention's effect】
The fiber and the fiber product of the present invention have an α-type tocopherol adhered to at least a part of the surface of a single fiber in an amount of 0.01 to 0.5 parts by weight with respect to 100 parts by weight of the fiber, thereby allowing the capillaries of the human body to be formed. It is possible to expand and promote blood circulation, and by preventing antioxidant and lipid peroxides, it can promote prevention of skin surface and rough skin due to oxidation of lipids in the skin. It is effective in suppressing rash when directly touching the human body like sanitary materials such as napkins.
The fibers and fiber products of the present invention are suitable for sanitary materials such as paper diapers, sanitary napkins, bandages, and gauze, and wipers for personal use such as disposable underwear, wet tissues, and cosmetic puffs.

Claims (5)

In fibers that are at least partially attached tocopherol homologs of the single fiber surface, of the tocopherol homologues, and α-type tocopherol adheres 0.01 parts by weight per 100 parts by weight of fiber Among the tocopherol homologues , a fiber having a weight ratio of α-type tocopherol / remaining tocopherol homologues of 2/8 to 7/3 . The weight ratio of α-type tocopherol / {γ-type tocopherol and / or δ-type tocopherol} / remaining tocopherol homologue is 2/7/1 to 7/3/0. fiber.   The fiber according to claim 1 or 2, wherein a hydrophilic fiber treating agent is attached in an amount of 0.1 to 1 part by weight with respect to 100 parts by weight of the fiber in addition to the tocopherol homologue. The fiber according to claim 3, wherein the hydrophilic fiber treatment agent comprises a phosphate ester potassium salt. Textile products comprising fiber according to claim 1-4.