JPH06280121A - Synthetic yarn provided with thermoplastic resin - Google Patents

Abstract

PURPOSE: To obtain a composite yarn useful for producing clothing for protection or the like by wrapping a hazardous core material such as wire in a specified condition. CONSTITUTION: Thermoplastic strands 52a, 52b and 52c having a low melting point are disposed in the longitudinal direction of a core member 50 of wire, fiberglass or the like in order to form an adhesive layer 52. The core member 50 together with the strands are wound by a core sheath 54 of nylon or the like and is furthermore wound by an outer sheath layer 56 in a direction counter to the direction of the containment barrier 54. The strands 52a-52c are melted by thermal treatment to form the adhesive layer 52 sheathing the core member and also well adhered to the core sheath and absorbed in the core sheath.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cut resistant yarn and a related woven fabric, cord or nonwoven fabric made by using the yarn. The present invention also relates to stable heat dissipative materials, reinforced materials, and abrasion resistant materials. In particular, the present invention relates to a foreskin material that encloses the core material so as not to cause such a fear, since the worker, the product, or the environment will be damaged if the core portion is exposed.

[0002]

2. Description of the Related Art In recent years, spinning and fiber processing of cut resistant yarns used for protective clothing and the like have been actively carried out. In these fiber processings, a stainless steel wire is used together with many kinds of fibers from the viewpoint of cutting resistance and manufacturing cost. Byrns, U.S. Pat. No. 4,384,449, describes the use of elongate wires foresheathed by aramid fibers and the working effects of such foreskin wires. One advantage is that it has better cut resistance compared to gloves made of plain aramid fiber. The Biruns patent also describes the ease of sewing using conventional glove sewing machines, the ease of use of gloves sewn with such foreskin fibers, and the like.

Batcher US Pat. No. 4,470,251 further illustrates what was taught in the Bylns patent by two basic findings. First, two or more finer wire strands are more flexible than one strand and use a larger amount of wire, and the filament strands knitted by these wire strands When used, the softness is further improved, and secondly, in the Batcher patent, a foreskin formed of a polyamide fiber, such as nylon, is shown to provide comfort to the user when used in gloves. There is.

Corms / Premons US Pat. No. 4,83
Nos. 8,017 and 4,777,789 have a tempered stainless steel wire wrapped around a fiber serving as a core material, and a wire strand wrapped in the opposite direction.
It shows that the flexibility is further increased while maintaining the cut resistance. The Corms / Plemons patent also suggests that the fibers used in the core and woven skin can be selected from a wide variety of types.

[0005]

SUMMARY OF THE INVENTION These prior arts are
It illustrates various improvements in protective clothing. Although each invention has its own mark of improvement, the present invention relates to the creation of an important and unpredictable technique associated with the manufacture of protective garments, which is further improved over these prior art. The lesser known problem is that when using a fiber that wraps the wire, the wire strand often breaks, pierces the wearer's skin, pollutes the product or manufacturing process, and risks the user to be infested by bacteria. Cultivate. During repeated bending actions, the wire breaks openly, piercing the surface of any known woven fabric. The present invention has found that the above drawbacks can be overcome by improving this wire wrapping method and by using other materials such as fiberglass when they are the core of the yarn. To date, the US Food and Drug Administration (FDA) or US Department of Agriculture (USDA) has not stipulated the use of such materials as yarn cores, but their use is unstable. There are many issues that have factors and must be resolved.
I do not know whether this solution will be accepted by industry or put to practical use.

Microscopically, it is known that the wire and the fiberglass give the synthetic yarn additional cut resistance while changing the cut surface. This is due to the fact that this material has such a superdenseness and abrasion resistance that it blunts the cutting edge of any cutting tool that comes into contact with this material. Wires and fiberglass also impart toughness to synthetic yarns. These materials have the advantage that various properties can be imparted to the composition at a relatively low cost.
However, these substances have the problem that synthetic yarns are used in fields where environmental and / or hygienic aspects cannot be ignored.

The present invention uses improved wire and / or fiberglass and / or other useful but at the same time harmful materials as the core material for the underlying synthetic yarns, where debris or defects in these materials are articles. Provide a fully foreskin-free synthetic thread so that it is not exposed to the surface of the worker and damages the health of the operator or the final product handled. The present invention substantially reduces the risk of exposing these substances by covering the core material composed of a single element or multiple elements with a shielding material, which has many problems and risks as described above. It is something to try.

[0008]

The basis of the present invention is to use a fusible thermoplastic resin as an enveloping material to isolate one or several cores that may damage the wearer or the surrounding environment. It is in the synthetic thread. This novel synthetic yarn basically consists of a thermoplastic resin and one or more cores covered with a substance added to it as a jacket. This combination also wraps around a dangerous core material,
It is a hot melt that forms a flexible fiber shield. The shield that envelops the core of a selected substance, together with other fiber products, is made up of a melt of thermoplastic resin, which places the dangerous substance between the melt and the fibrous material of the core. It is designed to be sandwiched. In another embodiment, the longitudinally extending material forming the core is inserted into a continuous fibrous shroud, and the shroud and core are not bonded.

It is desirable to wrap the wire in a plastic fiber layer that has a smooth outer surface that does not adhere to the skin layer. Since the wire itself has a smooth surface that does not bond to the thermoplastic resin, it is important that the core material be bonded to the thermoplastic resin so that the wire is wrapped between them. This combination provides a high performance foreskin medium while retaining a high degree of flexibility. The final product, such as gloves, made from such synthetic yarns may be somewhat hardened by the heat treatment in the molding process, but the synthetic yarns have a high degree of flexibility and can be easily knitted, woven or braided. Or it is easy to make gloves or other products. Depending on the end use conditions, various materials and processes can be used to make compatible synthetic threads.

It is highly desirable to use the conventionally used wrapping or wire wrapping equipment to make synthetic yarns. For later winding or for winding
Other devices and equipment can also be used. For example a mixer,
A twisting device, an extruder, etc.

The core material of the synthetic yarn is selected from a group of various kinds of fiber materials such as span, continuous yarn, multifilament or monofilament. The core material is a single strand,
It is selected from single fibers with multiple strands, or hybrids of these fibers. The choice of core structure is virtually unlimited and includes fiberglass, wire strands, thermoplastics, and / or other commonly used materials or combinations thereof. The core structure can be produced by blending these fibrous materials, twisting, extruding or any other method suitable for making the desired core or final product.

It has been found that the synthetic yarns made by the method of the present invention have various previously unrecognized advantages.
It has been found that such wires and fiberglass have a stronger abrasion effect when they are firmly fixed in place. The abrasion-resistant action of the cut-resistant yarn increases the action effect of other high-tensile fibers by abrading the cutting edge. If a wire is used, the exposed cutting edge will remove the filament from more of the fiber. When the wire is contained in its place, as in the present invention, its edges will come into direct contact with the skin and become more worn. This effectively encloses the supplemental overcoat until the full abrasion effect is exerted. The same can be said for fiberglass. Once fiberglass is crushed, it does not work effectively when hitting its cut edge and during normal rubbing. By joining the glasses in the manner described above, they are less likely to be crushed. When the glass is singulated so that it does not shatter easily and formed with a friction surface that does not move, maximum wear capacity is exerted. By using the abrasion effect more effectively in this way, it is possible to obtain the one having the same cutting resistance with a lower abrasion amount or the one having the increased durability with the same capacity.

The present invention has a characteristic effect when the thread is likely to be cut by a striking operation as well as being exposed to a cutting operation. When the encapsulated fiber of the present invention is pulled toward the cutting blade, the concentration and frictional action of the protective fiber in the area to be cut is increased. Thus, an increased protection capacity is achieved against this type of fear. or,
It has been found that the method of the present invention creates a yarn having the ability to absorb shocks and vibrations of all kinds. This is because the elastic material present in the composition acts as a mixture used to fuse the compositions together. This property acts to absorb vibrations and increase the degree of protection from traumatic injuries that slow the object.

It has been found that the bulkhead that wraps the core material is more effective at accommodating the wire than initially expected. It was initially believed that the longitudinally extending wire strands could not exceed 0.002 inch diameter due to the risk of the containment septum rupturing. However, as a result, the diameter of the wire strand extending in the longitudinal direction was successfully made 0.006 inches without increasing the diameter of the entire yarn. This means that heavier wire strands can be used while minimizing the risk of bursting of the septum.

Finally, it was observed that holes were formed after the heat treatment in the examples using the core material mainly composed of the thermoplastic resin which is fused by melting. This example was found to be highly original and improved in suppleness. This is an important factor in the field of clothing where comfort is required when worn. In certain embodiments, rather than bundling the core material with a thermoplastic resin, the material of the inner core material foreskin bulkhead is separated from the selected core material to isolate it from the surrounding thermoplastic resin. It is preferable to adopt the method of being covered with layers. In this case, the core material structure is not fused with the thermoplastic resin to maintain flexibility. Particularly fragile core materials will degrade rapidly if they are unable to move freely within such a sheath. The laminated material that serves as a partition for containing the inner core material is
A material having a higher melting point than the thermoplastic resin material surrounding it is used.

In a more preferred embodiment in which a heat-fixing method is used instead of the conventional liquid inner coating, a first core layer comprising a basic core material and one or more wire strands surrounding the basic core material. Are wound to form the second element of the basic core. The wire may be wound in the same direction with one or with multiple strands parallel to each other, or twisted or compound wound in approximately any conceivable direction. The wires can also be wound in opposite directions, one clockwise and the other counterclockwise. The wire types are 0.
Annealed stainless steel 404 with a diameter of 008 inches or less is preferred. Optimal is a single winding with a diameter of 0.0045 inches or a composite winding with a diameter of 0.003 inches.
When the wire strand is a composite, a finer strand is used. In such an embodiment, 0.
Windings of 002 inch diameter or larger are desirable. The wire wound on the underlying core is wound at a pitch of 1 to 100 turns per inch, depending on the requirements of each embodiment. The spiral shape formed in this way is
It tends to orient the corners of the wire towards the center of the synthetic yarn structure. This property is an important factor when considering fracture of wire strands. The wire strands extending in the longitudinal direction have the property of protruding rigid points when crushed. This rigid portion hits the surface directly when the yarn bends, and it is difficult to store it inside.

The wire structure and / or the partition wall containing the wire structure and the attachment layer added to form the composite as described below are selected from the group of thermofusible thermoplastic resins. This group includes polypropylene, low density, high density or ultra high density polyethylene, low melting nylon polyamide, or polyamide blends, or low melting polyester. Although many high temperature meltable thermoplastic resins have not been tested yet, it is considered that they can be applied to products used under high temperature and their examples. This stratification is applied to various different usage patterns such as foreskin, twisting, core winding, and separating partition of stored items, arranged in the longitudinal direction of the core material, protruding from the core material or compounded with the core material, and mixed with the core material. Or combined with the core by another combination method. It is also possible to add a thermoplastic material to the wire strand prior to winding the wire strand around the underlying core. The selection method of the combination of the thermoplastic resin material and the wire is determined by the product number and size of the wire strand. The wire strands may be foreskin, twisted, juxtaposed with more thermoplastic resin, coated with high purity raw silk other than thermoplastic resin, or coated with more conventional foreskin methods.

The thermoplastic resin selected for this layering is a monofilament, a multifilament, a spun or a mixture with other materials. The proportion of thermoplastic material in the stratification depends only on whether it is in the proper range or if the underlayment material can be stabilized. There are two advantages when joining the wires before wrapping around the underlying core. First, if the bonding is performed as a pretreatment, it is not necessary to separately wrap the thermoplastic resin material. Secondly, the thermoplastic material is concentrated only around the wire, leaving areas not covered by it, which serves to increase the flexibility of the composite main body. A more effective method is described below.

The next stratification is a partition wall body which wraps around the basic core material.
It is selected from a wide range of material groups such as synthetic materials and organic materials exemplified below, but is not limited thereto. That is, polyester, nylon, aramid, high-concentration polyethylene, for example, ultra-high molecular chain polyethylene such as Spectra under the trade name of Allied, cotton, silk, polycotton, rayon, trade name P under Hoechst Celanese.
BI, Teflon, a trade name of DuPont, and mixtures thereof. The exceptions are those with the same melting point as the material to be coated, and above, with a lower melting point than the selected thermoplastic.

This stratification has various functions described below. 1) This layer fuses with the underlying adhesive layer to form a fiber layer that becomes a shroud. In certain embodiments, a coated wire is included and this layering is used to encapsulate the basic core around which the wire is wrapped. As a result, the wire is completely enclosed in a flexible capsule or fibrous that is impenetrable from the outside and exhibits a sandwich effect. 2) In the embodiment using coated wire, the shroud will limit the movement of the wire when the composite is heated. Therefore, when melting the lower layer thermoplastic resin,
It is necessary to select a fiber material that maintains a relatively high hardness and does not lose strength. 3) The layered layer finally imparts cut resistance to the synthetic yarn. 4) The stratification absorbs the underlying heat fusible polymer and functions as a shroud of sufficient thickness to prevent the polymer from reaching the skin. This is a particularly important function when the associated skin must function independently of the core and partition members. Such independent movements are basically necessary to maintain flexibility, but also to ensure that the synthetic yarn is always in perfect condition so as not to become entangled. It has been observed that the cut and / or abrasion resistance of synthetic yarns is improved when the synthetic yarns are free to move across the cutting or friction surfaces. This can be easily understood by observing which is easier to cut, that is, the thread is cut tightly and the thread is cut loosely.

In addition to the above functions, in the embodiment using a coated wire, it is desirable that the third layer be formed by winding a large number of wires per inch at an angle as close to 90 degrees as possible. Ideally, the wrap angles will be near perpendicular to each other when it becomes the final composite yarn. 70 degrees was achieved in this example using 840 denier nylon and 8 turns per inch. In other embodiments, a lighter denier yarn and more turns are required. This becomes a more realistic problem because the wire ends must be wound in opposite directions. The number of turns per inch is determined by a combination of optimum angle, final encapsulation, density of stratification and the ability of the fiber to regulate wire movement during thermal cycling. No. 304 stainless steel alloy has a coefficient of thermal expansion of 10.1 x 10 ^-4 inches per degree Fahrenheit. If the compound is processed at 295 degrees Fahrenheit,
A one-inch section typically expands to 1.022626846 inches. The movement due to this expansion is seemingly small, or if it is uncontrolled, it will deform the fibrous body.
If the wire expands during heat cycling, it will press into the thermoplastic and the thermoplastic will cool faster than the wire, thus impeding this migration or normal bonding. This stratification ideally had a number of turns per inch to form a basic core with a thread of appropriate weight or diameter to maintain full foreskin and sufficient density. Must be one. However, from 20 to the embodiments of the present invention, 4800 denier yarns are used and have 3 to 200 turns per inch. The shroud stratification is alternately wound one or more times in the same or opposite directions. This layering is formed as a basic core by a number of threads as desired for the final function or product. As will be described below as a preferred embodiment, a simpler method and yarn combination yields a better effect.

Finally, the outermost layers are added. This outer layer becomes a particularly important factor when the base layer is not able to absorb the molten thermoplastic resin and has a property of preventing swelling on the surface of the final product (known as a wet-out phenomenon). The fibers contained in this outer layer are selected from the group of wire coatings described above. The outer wrapping layer may be one or more turns, each in a similar or dissimilar form. The wrapping of the selected material forms a single strand, or multiple strands of a single yarn, or a composite of different types of fiber yarns. This outer layer is also stretched over the base layer as a means of dissipating friction.
When a large number of layers are stacked and used as described above, it is not an essential requirement, but it is desirable to stack the layers in opposite directions. This method, known as the balancing method, has the effect of averaging and straightening the yarns so that the layers, which are separated from one another, engage with one another and are not easy to loosen.

The choice of fiber yarn and shape combination is dictated by the final use of the synthetic yarn and fabric, or the final product. Commonly used materials such as nylon, polyester, aramid, extended chain polyethylene, rayon, cotton or silk are used. However, the most suitable fiber and its form can be selected from the group of synthetic or natural fibers. The layering and foreskin are useful for cutting resistance, abrasion resistance, comfort when worn, heat resistance, improvement of touch for handling special materials, ease of knitting and other characteristics. The novel synthetic yarns thus created are suitable for knitting, weaving, braids, threads and other tailoring to desired fabrics and final products. Once the final product is molded, the final melting of the thermoplastic resin takes place. The heat treatment temperature and the heating time vary depending on the properties of the thermoplastic resin, the density of the composite, and the thickness of the product. For example, in the case of gloves,
A glove dipped machine designed to allow precise control of heating temperature and duration will be used. The synthetic yarns are heat treated in pairs in a dry or wet yarn treatment furnace.

[0024]

The following definitions of terms are useful in identifying the various forms and functions of the layering of this invention. (1) Basic core material. A material selected from the group of one or more longitudinally extending thermoplastics, carbon fibers or other hybrids. The basic core material is spun,
It is selected from one or more long, coated, twisted or foreskin materials. (2) Inner core material foreskin partition wall. This refers to an optional layered body that is optionally employed in embodiments where the core and tacky stratification need to be separated. It is stretched or wrapped over the core.
It is selected from selected materials other than those used for the basic core material, or materials having a melting temperature equal to or lower than that of the thermoplastic resin material of the embodiment to be heat-treated. (3) Adhesive layer. This layering relates to the adhesion within the basic core material,
It is used only as a source of tackiness, or is unnecessary if the material in the base core material has adequate tackiness. This layering is covered, stretched, foreskinted or longitudinally arranged on the basic core material or the partition wall enclosing it. (4) First-stage core material foreskin partition wall. It is selected from the same material group as the inner core foreskin septum. It is composed of single or multiple synthetic threads in various combinations, stretched or wrapped over the inner layer. (5) Outer layer. It consists of the same material group as the foreskin septum. This layer is optionally employed to provide the product with certain functions as needed.

Referring to FIG. 1A, there is shown a first embodiment having a basic core material 20 made of 840 denier industry standard nylon. A single wrap 25 of 0.0045 inch diameter annealed stainless steel is wrapped around the core 20 at a rate of 8 turns per inch of core length. Wrapped around this wire wrap 25 is a low temperature fusible thermoplastic resin adhesive layer 30, such as a wire / thermoplastic layer body 32 made of, for example, 0.006 inch diameter Shakespeare monofilament NX1012 telpolyamide. The thermoplastic partition wall layer 30 is wound at a rate of about 100 times per inch of the core material. The first-stage core material foreskin partition wall 35 is wound in a direction opposite to the wire / thermoplastic layer body 32, and
It is made from 40 denier industry standard nylon and has about 8 turns per inch of core or yarn. Finally, the outer layer 40 is wound in the opposite direction to the lower partition layer 35, the number of turns being about 8 turns per inch of core material or yarn,
Formed from 840 denier industry standard nylon.

The embodiment shown in FIG. 1A is one basic one, in which a thermoplastic resin material is first wound around and bonded to a wire wrap before the wire is wound around the core material. The adhesive action of the thermoplastic resin is concentrated in a limited area. By wrapping 840 denier nylon, the wire and nylon are intersected at the best angle to leave room for thermal expansion while maintaining complete coverage of the wire. As a result of testing the examples, the synthetic yarn showed a cutting resistance equivalent to that of a conventionally known synthetic yarn containing a wire, and no undesired rigidity phenomenon was observed in spite of an original wire wrap.

Another embodiment using the same basic structure as shown in FIG. 1A is shown in FIG. 1B. This is a 0.0045 inch diameter annealed stainless steel strand 2 with 1200 denier core 20 'wrapped in chain polyurethane.
5'is wound at 5 turns per inch. The 0.0045 inch diameter steel wire 25 'itself is overwrapped with about 200 denier conventional monofilament or multifilament polyurethane 30' before being wound on the core 20 '. In this example, a continuous foreskin 35 'of 650 denier extended chain polyethylene is applied which completely wraps the wire layer 5-6 times per inch. The final outer foreskin 40 'is made of 840 denier industry standard nylon,
The core material or the thread is wound at a rate of about 8 times per inch.

The second basic structure shown in FIG. 1B is a stratified layer 3 of extended chain polyethylene having a melting point of about 297 degrees Fahrenheit.
5'is wrapped so as to cover the wire pre-wrapped with the normal-type polyethylene 30 'having a melting point of 200 degrees to ensure the adhesive formation between the first-stage core material-containing partition wall layer 35 and the core material for wrapping. It is worth noting that Such a structure is preferable in the sense that conventional polyethylene reinforces the weak tackiness of extended chain polyethylene. This structure also provides an exceptionally high level of cut resistance and good wire wrap functionality due to the excellent toughness and cut resistance of extended chain polyethylene. Nylon is used for the outer foreskin layer 40 'because of its dissimilarity to the core material. If the heat treatment is not precisely controlled, the extended chain polyethylene material can easily reach the melting point and stick to the outer layer, resulting in a hardened end product.

Turning now to FIG. 2A and cross-sections B and C, a third embodiment is shown having a core 50 formed from a single strand of 900 denier fiberglass.
An adhesive layer 52 is formed in the longitudinal direction of the core member 50, and three strands 52 having a diameter of 0.006 inches and a Shakespeare NX1012 having a melting point of 275 degrees F are separated from each other.
a, 52b, 52c are adhered to this. A single encapsulating shroud or core wrap 54 is formed of 840 denier high viscosity nylon and is wrapped about the underlayer about 8 times per inch of core or yarn. Subsequent outer foreskin layer 56 is made of the same 840 denier nylon and is wrapped in the opposite direction from foreskin 54 at about 8 turns per inch. In this example, terpolyamide (molten nylon) does not fully envelop the core prior to heat treatment. However, during the heat treatment, the foreskin material is prepared in an amount sufficient to melt and wrap the core as shown in FIG. 2C. The 840 denier nylon wrap shroud 54 is polyamid and provides a very good adhesive with the meltable teloliamide strands 52a, b, c. The remaining polymer adheres to the fiberglass core. The outer coating layer 56 does not melt bond with the storage shroud 54 because there is a foreskin layer on the inside that absorbs the molten adhesive.

FIG. 3 shows 35 micron stainless steel 304
The 4th Example which has the basic core material 70 which extended the number to the longitudinal direction is shown. The core material 70 is wound with 650 denier extended chain polyethylene at a rate of 5 times per inch,
The inner core material-containing partition wall 72 is formed. A large number of strands of low-density polyethylene monofilament having a diameter of 0.005 inches are added in the longitudinal direction so as to wrap the foreskin core material and in parallel with the steel strands forming the core material 70 to form an adhesive layer 74. To do. The final outer layer is 200 denier TFE fluorocarbon (manufactured and sold by DuPont under the tradename Teflon) wound in the opposite direction of the septum 72 at a rate of about 12 turns per inch to provide an outer coating or The first-stage core material-containing partition wall 76 is formed. In this example, there are 10 straight strands of wire.
It is used to create a basic core material 70 having a high degree of flexibility equivalent to a 00 denier yarn, and the individual strands cannot break the relatively smooth partition layer 72.
The foreskin partition wall material made of extended chain polyethylene forming the inner core material enclosing partition wall 72 is preferably manufactured and sold by Allied Signal Company under the trade name Spectra 1000.

The embodiment shown in FIG. 3 is different from the other embodiments in that the outer foreskin partition layer 76 is finally brought into direct contact with the adhesive layer 74 and melt-bonded with another substance. The lubricity of the Teflon brand name allows the foreskin layer to fuse with the adhesive layer to prevent the Teflon layer from moving to expose underlying material. Further, the trade name Teflon does not need to independently function, as appropriate in this embodiment.
Due to the very heavy layer, the thermoplastic resin of the adhesive layer 74 does not come out on the surface. This embodiment is particularly useful as a cut-resistant surgical glove in the underwear of sterilized latex gloves, which is common in most surgical procedures.

FIG. 4 shows a core material 90 made of Kevlar 29 (aramid) under the trade name of DuPont with 1000 denier.
An example using is shown. The core 90 is longitudinally disposed in a layer 94 of DuPont Polyester No. 68, about 1000 denier, the layer 94 comprising two parallel strands 9
5a and 95b, and 160 denier polyethylene. This layer 94 is wrapped over it at a rate of about 5 turns per inch, opposite the outer wire layer 92b. The final outer coating 96, also formed of polyester, is wrapped over it in the opposite direction to layer 94.
Such a synthetic yarn is woven and sewn to form a glove, which is suitable for being subjected to a heat treatment at 340 ° F. for 5 minutes by an ordinary glove forming machine.

In the embodiment shown in FIG. 4, the adhesive layer 91abc
Lies below the wire layer. In order to increase the coalescing action, additional thermoplastic resin material is added to the first stage core material foreskin septum 94.
Is mixed in. Two wire strands 92a, 92
b are wound in mutually opposite directions, and the first stage core material foreskin partition wall 94 is wound around the outer wire 92b. The first or inner wire strand is wound the same number of times as the septum 94 and in the same direction, pressing against the polyester filaments that were normally placed during the heat treatment. By winding the wire strand in the opposite direction, its expansion is suppressed,
The inner wire is thus regulated. Polyethylene shrinks about 14% by heat treatment at 340 ° F., making it useful as a covering shroud and final foreskin. This shrinkage causes the polyester to bond to the expanding wire and more closely to the core to form a strong cohesive bond.

The embodiment shown in FIG. 5 is a modified example of the synthetic yarn structure and is used for the same purpose as described above or for producing the same product. This example is based on the Beggart 35
About 14 strands of micron-diameter stainless steel type 304 are used as the core material. This core material 110 is heat-meltable with a terpolyamide monofilament parallel strand 115b having a diameter of 0.116 inches by a layered structure 115 in which a foreskin layer 115a of 200 denier industrial standard multifilament nylon is combined.
Wrap about 30 times per inch. As the terpolyamide monofilament of the present embodiment, it is desirable to use NX1012 manufactured by Shakespeare Co. and having a melting point of 270 ° F. What is arranged in parallel with the core material 110 and its outer layer 115 is TF such as Teflon.
E-Fluorocarbon 1200 denier single strand 114. This Teflon is first carefully fed by a device for expanding the width of the multifilament, then around the core material as core filament 1 under the trade name Teflon.
Tapered around 10 and layer 115. The final outer layer 116 is made of 20 denier nylon and is wrapped in the opposite direction from the inner layer 115 at a rate of 8 turns per inch. This final winding layer 116 acts to hold the trade name Teflon until the synthetic yarn is heat treated.

FIG. 6 shows an embodiment in which the core 200 is comprised of industry standard polyester (500 denier) 202 and a single strand of stainless steel 205 of 0.003 inch diameter, model number 304. The adhesive layer 210 is spirally wound around the basic core material 200 at a rate of 7 times per inch and is made of low-density polyethylene having 350 denier and 70 filaments. 50 on this adhesive layer
A first stage core material foreskin partition wall 215 made of 0 denier standard polyester material is spirally wound at a rate of about 9 times per inch. The final outer layer 220 is comprised of 1000 denier industry standard polyester and is wrapped about 8 times per inch in the opposite direction from the inner layer. The thus-prepared synthetic yarn is heat-treated by a steam heating device at 280 ° F. for 2 hours and a half to 2 hours and 45 minutes. This synthetic yarn is particularly suitable for industrial gloves and other clothing requiring cut resistance.

FIG. 7 shows a basic denier of 150 denier textile grade polyester 302 and 100 denier 7
An example using 0-filament low-density polyethylene 305 is shown. This core has a 0.002 inch diameter, model number 3
04 stainless steel wire single strand 310,
It is wound at a rate of 24 times per inch. The first stage wrapping barrier 315 (final layer) comprises 300 denier textile grade polyester wound in the opposite direction to the wire layer 310 at a rate of about 10 turns per inch.
The thus-prepared synthetic yarn is heat-treated at 280 ° F. for 1 hour and 45 minutes by a steam heating device. This synthetic yarn is used for clothing requiring more cut resistance, especially for surgical gloves.

FIG. 8 shows a cut resistant glove manufactured using the above-described synthetic yarn embodiment. This glove has improved cut resistance, flexibility and wear comfort. Other products made with the novel synthetic yarns of the present invention also exhibit the functionality expected from each synthetic yarn embodiment, all of which are within the scope of the claims.

[Brief description of drawings]

FIG. 1 is an embodiment of a synthetic yarn according to the present invention, in which A is a thermoplastic resin material which is first wound around and bonded to a wire wrap before the wire is wound around a core material, and B shows its deformation.

FIG. 2 is an example of a synthetic yarn having a core formed by a single strand of fiberglass, where A is the overall structure,
B and C show cross sections of the core material before and after heat treatment.

FIG. 3 shows a fourth embodiment having a basic core material obtained by stretching stainless steel in the longitudinal direction.

FIG. 4 shows an example using a core material formed of 1000 denier aramid.

FIG. 5 shows a variation of a synthetic yarn structure used to create a similar application or the same product as shown in FIG.

FIG. 6 shows an example in which the core is constructed from industry standard polyester and a single strand of stainless steel.

FIG. 7 shows a modification of the embodiment shown in FIG.

FIG. 8 shows a glove made from the synthetic yarn of the present invention.

[Explanation of symbols]

 20, 20 'core material 25 wrap 30 partition wall or layer 32 thermoplastic layer 35 first stage core material foreskin partition wall 40 outer layer 50 core material 52 adhesive layer 54 foreskin or shroud 56 outer coating layer 70 core material 72 partition wall 74 adhesive layer 76 Foreskin or partition wall 90 Core material 92 Outer wire layer 94 Partition wall 95 Strand 96 Outer coating layer 110 Core material 114 Strand 115 Layer 116 Wrapping layer 200 Core material 210 Adhesive layer 215 Foreskin partition wall 220 Outer layer 300 Core material 310 Strand 315 Foreskin partition wall

Claims (16)

[Claims] 1. A synthetic yarn comprising a core material made of a material in which a core material, which itself may damage the body or the environment, is surrounded by a partition wall and formed into a strand shape, which is knitted or woven to form a garment, Synthetic yarn having the following constitution, which is a material for forming an industrial fibrous material by forming a braid or a cord or for forming a non-woven fabric, and which is made into a desired final product by an ordinary method: A) Wire, fiber A longitudinally-stretched basic core material that is a strand of synthetic yarn made of one or more materials selected from glass, thermoplastics, filaments or spun fibers, and combinations thereof. B) At least one core foreskin septum made of a material selected to operate at the first stage melting temperature. C) An adhesive layer for joining the core material and the foreskin septum made of a material selected to operate at a second stage melting temperature lower than the first stage melting temperature for melting the core foreskin septum. D) A coated fiber layer in which the adhesive layer and the core material foreskin partition wall are melt-bonded by heat fusion. 2. A basic core material comprising at least one strand of aramid and at least one strand of a marula filament thermoplastic resin material positioned in parallel with the aramid, wherein the aramid and the thermoplastic resin strand have a predetermined denier. The synthetic yarn according to claim 1, wherein the thermoplastic resin is made to melt at a temperature lower than that of the aramid. 3. The synthetic yarn according to claim 1, wherein the basic core material is composed of multiple strands of wire having a predetermined diameter. 4. The adhesive layer is polypropylene, ultra low,
The synthetic yarn according to claim 1, which is composed of a thermoplastic resin material selected from the material group of low, high, ultra high density polyethylene, low temperature melting nylon polyamide, polyamide mixture and low temperature melting polyester. 5. The core foreskin partition wall is made of polyester, nylon, aramid, high-concentration polyethylene, ultra-high molecular weight stretched chain polyethylene, cotton, silk, polycotton mixture, rayon or TFE fluorocarbon, PBO, P.
The synthetic yarn according to claim 1, which is composed of a material selected from a material group of BZT and PTI. 6. A synthetic yarn composed of a core material formed by stranding a core material made of a material that itself may damage the body or the environment by partition walls, and knitting or weaving the synthetic thread to form clothes. A material that is used as a fiber material for industrial use as a braid or a braid, or forms a non-woven fabric. By protecting the core material with an outer layer, it can withstand harsh weather conditions, and protection that maintains flexibility and cut resistance. Selected from synthetic yarns, knitted or woven into tailored products, having the following constructions: A) wires, fiberglass, thermoplastics, filaments or spun fibers, and combinations thereof. A basic core material made of a combination of multiple materials and stretched in the longitudinal direction to form a strand of synthetic yarn. B) A pressure-sensitive adhesive layer for wrapping the core material, the pressure-sensitive adhesive layer being disposed between the basic core material and the added outer layer so as to separate the core material and the outer layer from each other. A pressure-sensitive adhesive layer, in which a molten fiber layer is formed between the core material and the outer layer at the time of being heated so as to maintain sufficient flexibility in the knitting or weaving process of the synthetic yarn. C) An outer layer consisting of at least one layer of a material selected to surround the adhesive layer from the outside and to operate at a higher melting temperature than the thermoplastic resin forming the adhesive layer. D) A coating layer made of at least one selected material and wound on the lower layer to a predetermined thickness. 7. A synthetic yarn according to claim 6 and having a basic core construction as follows: A) from a selected filament material longitudinally drawn along the strands of the final synthetic yarn. The first element that becomes. B) It has a predetermined diameter and is spirally wound around the first element so as to extend in the longitudinal direction, and the number of turns is a predetermined number per inch of a strand of the synthetic yarn, at least 1 A second element consisting of a wire strand of a book. 8. A synthetic yarn as defined in claim 6 and having a basic core construction as follows: A) from a selected filament material longitudinally drawn along a strand of the final synthetic yarn. The first element that becomes. B) At least one wire strand having a predetermined diameter and arranged parallel to said first element. 9. The synthetic yarn according to claim 7, wherein the filament constituting the first element is fiberglass. 10. The synthetic yarn according to claim 7, wherein the filament forming the first element is made of asbestos. 11. The synthetic yarn according to claim 7, wherein the filament constituting the first element is made of carbon fiber. 12. The first element comprises a combination of at least one aramid and at least one strand of a multifilament thermoplastic resin having a lower melting point than aramid and arranged parallel to the aramid, each aramid being The synthetic yarn according to claim 7, wherein the thermoplastic resin strand has a predetermined denier. 13. The synthetic yarn of claim 7, wherein the first element comprises multiple strands of wire material having a predetermined diameter. 14. The adhesive layer is polypropylene, ultra low,
7. The synthetic yarn according to claim 6, which is composed of a thermoplastic resin material selected from the group of materials of low, high, ultra high density polyethylene, low temperature melting nylon polyamide, polyamide blends and low temperature melting polyester. 15. The adhesive layer comprises a predetermined number of strands of terpolyamide having a diameter of 0.006 inch.
4. The synthetic yarn according to 4. 16. The outer layer and the coating layer are polyester, nylon, aramid, high-concentration polyethylene, cotton,
Silk, polycotton mixture, rayon, PBO, PBZ
The synthetic yarn according to claim 6, which is composed of a material selected from a material group of T, PBI, and TFE fluorocarbon.