JP2009191376A - Pile fabric for protection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pile fabric for protection which is capable of protecting a locking device or a controlling device internally installed by utilizing a through-hole bored by using a drill from the operation for unlocking or illegally operating. <P>SOLUTION: The pile fabric for protection includes a pile fabric having warp ground yarns, weft ground yarns and continuous pile warp yarns, or a pile fabric having upper and lower double ground texture having ground warp yarns and ground weft yarns, and continuous pile yarns connecting the upper and lower double ground textures, and is regulated so that the pile warp yarn may contain at least 10 wt.% or more high-strength fiber, and the pile length may be 10 mm or more. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a defense pile fabric, and more particularly, to a defense pile fabric that prevents an illegal act of unlocking or illegally operating a locking device or a control device from a through hole opened by a drill.

  In recent years, thumb-turn picking has emerged. The thumb-turn type picking is to make a through hole with a drill in the peripheral part of the key in the door, insert a thick wire with a bent tip from the through hole, and use the tip of the wire as a rotation knob of the inner key on the back side of the door. It will be hooked and unlocked.

  As a defense against such a new thumb-turn type picking, Patent Document 1 discloses that a key for operating a locking claw is buried in the door body, its key hole is exposed on the front side of the door body, and a rotary knob on the back side. A security door has been proposed in which a section filled with cut-resistant fibers such as aramid fibers is provided so as to surround the key inside the door body (see Patent Document 1).

  According to the security door described in Patent Document 1, by providing an area filled with cut resistant fibers, even if an attempt is made to open a through hole with a drill in this area, the cut resistant fibers are wound around the drill and cut. Since it accumulates without being stopped, the rotation of the drill stops and no further penetrating operation can be performed. In this security door, as a cut resistant fiber to be filled, a fiber assembly in which short fibers are randomly dispersed, a nonwoven fabric, a woven fabric, and a knitted fabric in which a randomly dispersed fiber assembly is entangled with a needle punch is used. Yes.

  However, there is also a structure in which a control device is installed instead of a locking device. In such a structure, if a through hole is drilled in the front plate, the control device can be operated illegally. In addition to the locking devices provided at the doors of houses, condominiums, apartments, etc., there are also locking devices that are not supposed to be unlocked from the inside, such as safes, warehouses, lockers, and archives.

  On the other hand, cut-resistant fibers such as aramid fibers are used as protective materials for clothes, gloves, arm covers, etc. that protect the body without being broken or pierced by contact with blades or sharp metal. It is used. However, aramid fibers and the like have drawbacks such that the fibers themselves are stiff and have a poor feeling of being transmitted to the hands and arms and have poor water absorption compared to natural fibers such as cotton. In order to improve them, it is possible to plant aramid fibers as pile yarns (see Patent Document 2), or to use high elongation processing aramid fibers or the like for pile warps (see Patent Document 3). Proposed. These technologies are intended to improve the above-mentioned drawbacks of protective materials. However, when the pile length is increased, the piles that have been raised fall down from the side of the pile when they come into contact with a knife or stone. Forces such as cutting and abrasion are applied. Therefore, a shorter pile length is preferable (about 0.5 mm to 6 mm).

  Further, a polishing towel cloth is also disclosed in which an aramid fiber yarn is used as a pile yarn and a pile having a pile length of 5 mm or less is formed on the woven fabric surface (see Patent Document 4).

Furthermore, it is disclosed that a pile cloth in which a looped pile is planted is used as a protective mat for protecting a buried object such as a power line, a telephone line, a gas pipe, and a water pipe from a drilling or the like (see Patent Document 5). ). However, since this pile cloth is for making an operator detect presence of an embedded object, pile height is about 5 mm.
JP 2004-324145 A Japanese Patent No. 3591013 Japanese Patent No. 389856 Utility Model Registration No. 3086344 JP 2004-232719 A (see paragraphs [0049], [0053], etc.)

  The present invention has been made in view of the above circumstances, and it is possible to prevent an operation to unlock or illegally operate a locking device or a control device provided using a through hole opened by a drill. The object is to provide a protective pile fabric.

  In order to achieve the above object, the inventors of the present invention have developed a pile fabric having a loose structure that can be attached in close contact with a front plate of a structure having a locking device or a control device and that is easily entangled with a drill. Pay attention. And as a result of experimenting with changing the pile length, it was found that a pile fabric with a pile length of 10 mm or more has an excellent defense function against a drill, and even if the pile yarn is a rigid fiber, weaving of the pile fabric is compared. It was found that it was easy.

That is, the defense pile fabric of the present invention is
A pile fabric for defense comprising a ground warp and a pile warp continuous with a ground weft, wherein the pile warp contains at least 10% by weight of high-strength fibers and has a pile length of 10 mm or more. It is a feature.
Moreover, the pile fabric for defense of the present invention is
A pile fabric for defense comprising a top and bottom double ground structure composed of ground warp and ground weft, and a continuous pile warp connecting between the top and bottom double ground structures, the pile warp, It contains at least 10% by weight of high-strength fibers and has a pile length of 10 mm or more.

  In the defense pile fabric of the present invention, the total tensile strength per pair of the pile warp yarns is preferably at least three times the total tensile strength per pair of intersecting weft yarns.

  The high-strength fiber is preferably at least one fiber selected from polyphenylene sulfide fiber, wholly aromatic polyester fiber, polybenzobisoxazole fiber, high molecular weight polyethylene fiber, aramid fiber, and polyketone fiber.

  The pile fabric for defense according to the present invention has a long pile length of the pile warp. Therefore, even if a person trying to cheat attempts to open a through-hole with a drill to unlock or improperly operate the locking device or control device, The pile warp yarns that are entangled with the periphery of the drill and dull the pivoting operation of the drill, so that no further penetrating operation can be performed. Also, by making the tensile strength of the pile warp higher than the tensile strength of the ground weft, even if the pile warp is pulled at the moment when it is entangled with the drill, the ground weft cuts earlier than the pile warp. There is no risk that the tangled pile warp will break or unravel. Therefore, fraudulent acts can be prevented by attaching the defense pile fabric of the present invention to the back of the front plate of the structure in which the locking device and the control device are installed.

  Referring to the drawings, the defense pile fabric (10) of the example of the present invention shown in FIG. 1 includes a continuous pile warp yarn (5), ground warp yarns (3), (4) and ground weft yarn (7). The pile warp pile length (L) is 10 mm or more. The pile warp yarn (5) constitutes a loop pile (5a) in the pile fabric (10).

  The defense pile fabric (20) of the example of the present invention shown in FIG. 2 is composed of a fabric (ground structure) (9) and a ground warp yarn (3) composed of ground warp yarns (1), (2) and ground weft yarn (6), A pile warp comprising a continuous pile warp (5) connecting between upper and lower double ground structures composed of a woven fabric (ground structure) (8) comprising (4) and ground weft (7) The pile length (L) is 10 mm or more.

  In the present invention, the “pile length” refers to the distance between the top and bottom of the pile including the ground when the pile is tight, and is the distance indicated by L in FIGS. This pile length needs to be 10 mm or more. Even if the pile length is less than 10 mm, the pile warp yarn is entangled with the drill, but a sufficient amount of yarn is prevented from being entangled so that the turning operation of the drill can be stopped. The pile length is desirably 15 mm or more in order to provide a more sufficient protective function, and is desirably 30 mm or less in consideration of the weavability of the pile fabric and the ease of attachment to the structure.

  The pile fabrics (10) and (20) can be produced by a conventionally known weaving method. The pile woven fabric (20) is produced by a method of making a pile with warp with a weft double structure using a special loom, and the weft to make the ground structure is a plain weave structure including a changed plain weave structure and two upper and lower sheets. A woven fabric is made, and pile warp yarns (5) are connected up and down between the two woven fabrics while alternately crossing the front and back weft yarns (6) and (7).

  On the other hand, the pile woven fabric (10) is produced by a method of making piles with warp yarns in a pile woven structure using a dedicated loom, and the warp and weft forming the ground texture is made with a plain woven structure including a changed plain weave structure, A pile warp yarn (5) is sandwiched and fixed between ground warp yarns (3), (4) and a weft yarn (7). Such a pile woven fabric (10) can also be obtained by removing the ground warp yarns (1), (2) and the ground weft yarn (6) constituting the ground texture on the upper surface from the pile woven fabric (20). As shown in FIG. 1, the ground warp yarns (3), (4) and the ground weft yarn (7) cooperate with each other to form a ground structure (8) of the pile fabric (10). The pile (5a) is preferably formed on one side of the ground tissue.

  In the pile woven fabric of the present invention, the pile density formed by the pile warp is preferably in the range of 200 to 1500 pieces / 25 mm square. If the density is 200 pieces / 25 mm square or more, the pile warp is entangled around the drill. It becomes possible to blunt the turning operation of the drill. The greater the amount of pile warp that is entangled, the greater the effect of slowing or stopping the pivoting action of the drill, but if the density exceeds 1500/25 mm square, the weaving property tends to be inferior and the effect tends to peak. In FIG. 1, the pile indicated by the density of the pile is counted as one loop pile (5a) from the time when the pile warp yarn (5) is woven into the next weft yarn (7). In FIG. 2, until the pile warp yarn (5) is woven from one ground yarn of the upper surface texture or the lower surface texture into the next ground yarn, that is, if it is the upper surface texture, from the weft yarn (6) to the next ground. Until it is woven into the weft yarn (6), the pile from the weft yarn (7) to the next weft yarn (7) is counted as one if it is a lower surface texture.

  In the pile fabrics (10) and (20) of the present invention, as the pile warp yarn (5), a filament yarn or a spun yarn can be used, both of which exhibit the desired effect, but are most preferable from the viewpoint of tensile strength. Is a multifilament yarn.

  The yarn used for the pile warp contains at least 10% by weight of high-strength fiber so as not to break when entangled with the drill, but more preferably contains 50% by weight or more. It is most effective to consist of% by weight. The yarn may be composed of one or more types of high-strength fibers, but high-strength fibers and synthetic fibers such as nylon, polyester and acrylic, regenerated fibers such as rayon, and natural materials such as cotton and linen You may be comprised from the alignment with a fiber, a twist, a blended yarn, or a blended yarn. In particular, if there is a large difference in tensile strength between the pile warp and the ground weft described later, the pile warp will break because the weft tangled around the drill will be pulled first, even if the pile warp is pulled by the rotational momentum of the drill. This is preferable in that it can prevent the entanglement or entanglement from being released. The difference in tensile strength between the pile warp and the weft is that the total tensile strength per pair of pile warp forming the same pile in the woven structure intersects with one set of the pile warp described later The total tensile strength is preferably 3 times or more, more preferably 5 times or more, and most preferably 20 times or more.

  If the single yarn fineness of the yarn used for the pile warp is too small, the mechanical strength of the single yarn will be weak, and if it is too large, the cut and abrasion resistance will be excellent, but if it is too large, the pile warp will become stiff and the yarn will become stiff It becomes difficult to handle. Therefore, when the pile warp is a filament yarn, the single yarn fineness of the yarn is preferably about 0.5 to 11 dtex, and the fineness (total fineness) of the yarn is recommended to be in the range of 220 dtex to 3300 dtex. On the other hand, when the pile warp is a spun yarn, the single yarn fineness of the yarn is preferably about 0.5 to 11 dtex, and the yarn count (cotton count) is preferably in the range of 40 to 5 count. The spun yarn may be produced by a known method.

  As the above-described high-strength fiber, the tensile strength measured based on JIS L 1013 (1999) is preferably 13 cN / dtex or more, more preferably 15 cN / dtex or more. In particular, if the strength and heat resistance are high, the fiber is not melted by frictional heat generated by the rotational force of the drill, which is safe. As for heat resistance, the melting point or the thermal decomposition starting temperature is preferably 250 ° C. or higher, more preferably 300 ° C. or higher.

  Examples of such high-strength fibers include polyphenylene sulfide (PPS) fibers, wholly aromatic polyester fibers (for example, Kuraray Co., Ltd., trade name “Vectran”), polyparaphenylene benzobisoxazole fibers (for example, Toyobo Co., Ltd., Trade name "Zylon"), high molecular weight polyethylene fiber, aramid fiber and polyketone fiber. These fibers may be used alone or in combination of two or more to constitute a pile warp yarn.

  Examples of the aramid fibers include meta-aramid fibers and para-aramid fibers. Examples of the meta-aramid fibers include meta-aromatic polyamide fibers such as polymetaphenylene isophthalamide fibers (manufactured by DuPont, trade name “NOMEX”). Para-aramid fibers include, for example, polyparaphenylene terephthalamide fiber (trade name “Kevlar” manufactured by Toray DuPont Co., Ltd.) and copolyparaphenylene-3,4′-diphenyl ether terephthalamide fiber (Teijin Techno Products Co., Ltd.) Para-type wholly aromatic polyamide fibers manufactured by the company and trade name “Technola”).

  Polyketone fibers include polyketone (PK) fibers, polyetherketone (PEK) fibers, polyetherketoneketone (PEKK) fibers, polyetheretherketone (95% by mass or more of repeating units composed of 1-oxotrimethylene ( PEEK) fiber and the like.

  Among these high-strength fibers, para-aramid fibers are preferable in terms of economy and tensile strength as well as excellent cut resistance and heat resistance. There is no risk of the fibers dissolving due to frictional heat generated by the rotational force of the drill.

  In the pile fabrics (10) and (20) of the present invention, filament yarns or spun yarns can be used as the ground warp yarn and the weft yarn, and these yarns are recycled from synthetic fibers such as nylon, polyester, acrylic, and rayon. It is preferably composed of fibers, natural fibers such as cotton and hemp, or their mixed twists, blended yarns or blended yarns. In particular, as described above, in order to make the total tensile strength per pair of pile warp yarns more than three times the total tensile strength per pair of intersecting ground weft yarns, the weft yarns are made of natural materials such as cotton and linen. It should be composed of fibers.

  Examples of the pile woven fabric of the present invention include a pile woven fabric in which continuous pile warp yarns are simultaneously woven into the ground texture. However, a pile woven fabric in which a continuous pile warp yarn is implanted in a woven fabric previously made of ground warp yarn and ground weft yarn is also used. good.

  In the pile woven fabric of the present invention, the flexibility, cushioning, heat retention, and the like obtained by piling up the pile warp are unnecessary, so the pile warp need not be raised and in a state of being tilted against the ground structure. good. The thickness of the pile fabric in a state where the pile warp has fallen is not particularly limited, but in order to provide sufficient defense performance, the ratio of the thickness of the pile fabric to the pile length may be 30 to 90%. Preferably, the pile fabric has a thickness of 5 mm or more.

  It is effective to provide the protective pile fabric of the present invention on the back side of the front plate of the structure in which the locking device and the control device are provided. For example, a method in which a protective pile fabric is sandwiched between a front plate and an auxiliary plate and a locking device or a control device is installed behind the protective pile fabric, or the protective pile fabric is bonded to the front plate and / or auxiliary plate with an adhesive. Examples of the method include pasting and a similar configuration. Thereby, even if the cutting edge of the drill penetrates the front plate, the defense pile fabric prevents the penetration, so that it is possible to prevent an operation to unlock or improperly operate the locking device or the control device.

  Examples of the structure include doors of houses, condominiums, apartments, warehouses, safes, lockers, archives, ATMs, home appliances, vending machines, ticket vending machines, game machines, measuring devices, emergency call devices, elevators, flow control Examples thereof include a device, a lock device (automatic lock, etc.), a monitoring device, a vehicle steering control device, a building equipment (door etc.) control device, and a ventilation device.

  Next, the present invention will be described more specifically using examples and comparative examples, but the present invention is not limited to the following examples.

(Production Example 1)
Polyselenium terephthalamide fiber filament yarn ("KEVLAR" registered by Toray DuPont Co., Ltd.) as cotton warp yarn with count 20s / 2 as ground warp, cotton spun yarn with count 30s / 2 as weft yarn, and pile warp yarn 29), tensile strength 20.3 cN / dtex, tensile modulus 499 cN / dtex, single yarn fineness 1.65 dtex, total fineness 1670 dtex). The weave structure as seen from the upper or lower surface is arranged so that one pile warp and two one side warp are alternately arranged. The density of the pile warp on one side is 23/25 mm, A warp double-structured pile woven fabric having a density of ground warp of 46/25 mm, a density of ground weft of 36/25 mm, and a pile length of 15 mm was produced. In this weaving structure, a pair of piles is formed by a single pile warp, and a single weft intersects with the pile.

(Production Example 2)
Polyselenium terephthalamide fiber filament yarn ("KEVLAR" registered by Toray DuPont Co., Ltd.) as cotton warp yarn with count 20s / 2 as ground warp, cotton spun yarn with count 30s / 2 as weft yarn, and pile warp yarn Trademark) 29 ", single yarn fineness 1.65 dtex, staple length 51 mm). The weaving structure in which the weave structure as viewed from the upper or lower surface is arranged so that two pile warps and one side warp are alternately arranged. The density of the pile warp on one side is 46/25 mm. A warp double-tissue pile woven fabric having a warp density of 46/25 mm, a weft density of 36/25 mm, and a pile length of 18 mm was produced. In this weaving structure, a pair of piles is formed by two pile warp yarns, and one weft yarn intersects with the piles.

(Comparative Production Example 1)
A pile woven fabric having a pile length of 8 mm was prepared using the same yarn as in Production Example 1 except for the pile length, and woven with the same weave structure and the same density. A pair of piles is formed by one pile warp, and there is one ground weft that intersects the pile.

(Production Example 3)
The ground warp and the weft were removed from the ground structure on the upper surface of the pile fabric produced in Production Example 1 to produce a pile fabric having a pile length of 15 mm. A pair of piles is formed by one pile warp, and there is one ground weft that intersects the pile.

(Production Example 4)
A fabric woven with the same ground warp and pile warp yarn, the same density, the same weave structure and pile length as in Production Example 2 except that a polyester multifilament yarn having a total fineness of 275 dtex was used as the ground weft was prepared from the ground texture on the upper surface. A pile woven fabric having a pile length of 18 mm from which the ground warp and the weft were removed was prepared. A pair of piles is formed by two pile warps, and there is one ground weft that intersects the piles.

(Production Example 5)
Polyselenium terephthalamide fiber ("KEVLAR (registered trademark) 29" manufactured by Toray DuPont Co., Ltd. was used as a cotton spun yarn with a count of 20s / 2 as a ground warp, a cotton spun yarn with a count of 20s / 2 as a weft, and a pile warp. A pile fabric with a pile length of 18 mm was woven with the same weaving structure and density as in Production Example 2 using a spun yarn of 20 count (cotton count) consisting of a blend of 10% by weight and 90% by weight polyester fiber. A pair of piles is formed with two pile warps, and there is one weft crossing the pile.

(Comparative Production Example 2)
A pile woven fabric having a pile length of 18 mm was prepared using the same warp and weft as in Production Example 2 except that cotton spun yarn having a count of 20 s / 2 was used as the pile warp, and woven with the same weave structure and the same density. A pair of piles is formed by two pile warps, and there is one ground weft that intersects the piles.

  The organization chart seen from the ground surface of the upper surface or lower surface of the pile fabric produced in the above production example is shown in FIG. (A) is Production Examples 1 and 3 and Comparative Production Example 1, and (b) is Production Examples 2, 4, 5 and Comparative Production Example 2. In the pile fabric structure produced in the production example, the ground weft hanging on the pile warp and the ground weft not hanging on the pile warp exist alternately. In FIG. 3A, the density of the pile is (pile warp density 23) × (36 weft yarns / 2) = 414/25 mm square. In FIG. 3B, (pile warp density 46). ) × (36 weft yarns / 2) = 828 yarns / 25 mm square.

Example 1
The pile fabric obtained in the above production example and comparative production example is sandwiched between two 9 mm thick MDF plates (medium fiber boards), and the gap between the two MDF plates is 10 mm (produced in the examples) The pile fabric was in a state where the pile yarn was crushed.), Or fixed to 20 mm. A battery driver drill equipped with a drill blade (BOSCH PSR14.4) is pressed from the upper surface of the MDF plate with the pile fabric sandwiched between them, high-speed rotation (maximum no-load rotation speed 1400 min ^-1 rotation / min), torque 30 N · m An experiment was conducted to determine whether the cutting edge of the drill penetrates the MDF plate on the lower surface under the conditions described above. The drill blade used was an outer diameter of 3 mm, the material was cobalt high-speed steel, and the application was for stainless steel, steel, and aluminum. As the drilling resistance performance, the case where the drill blade penetrated the MDF plate was evaluated as x, the case where the drill blade did not penetrate was evaluated as ◯, the case where the drill blade did not come out and the case where the drill blade was broken was evaluated as ◎.

  The total tensile strength of one pair of piles and the total tensile strength of one pair of weft yarns are the values measured in advance according to the method of JIS L1013 and JIS L1095 in the state of yarns, and the number used for each pair is combined. Value.

  The experimental results are summarized in Table 1.

  As is apparent from the results of the table, it can be seen that the protective pile fabric of the present invention has an effect of preventing drill penetration.

  The defense pile fabric according to the present invention includes a structure having a locking structure such as a door, a safe, a warehouse, a locker, a library, an ATM, a vending machine, a vending machine, a game machine, an emergency call device, an elevator, a monitor The present invention can be widely applied to a structure in which a control device such as a device or a building facility (door etc.) control device is installed.

It is a principal part expanded sectional view which shows an example of the defense pile fabric of this invention. It is a principal part expanded sectional view which shows an example of the defense pile fabric of this invention. It is the organization chart seen from the ground surface of the upper surface or lower surface of the pile fabric produced in the manufacture example.

Explanation of symbols

1, 2 Ground warp 3, 4 Ground warp 5 Pile warp 6, 7 Ground weft 8, 9 Ground structure 10 Pile fabric 20 Pile fabric

Claims (4)

  A pile fabric for defense comprising a ground warp and a pile warp continuous with a ground weft, wherein the pile warp contains at least 10% by weight of high-strength fibers and has a pile length of 10 mm or more. Characteristic defensive pile fabric.   A pile fabric for defense comprising a top and bottom double ground structure composed of ground warp and ground weft, and a continuous pile warp connecting between the top and bottom double ground structures, the pile warp, A defense pile fabric comprising at least 10% by weight of high-strength fibers and a pile length of 10 mm or more.   The defense pile fabric according to claim 1 or 2, wherein a total tensile strength per pair of pile warp yarns is three times or more a total tensile strength per pair of intersecting weft yarns.   The high-strength fiber is at least one kind of fiber selected from polyphenylene sulfide fiber, wholly aromatic polyester fiber, polybenzobisoxazole fiber, high molecular weight polyethylene fiber, aramid fiber and polyketone fiber. A pile fabric for defense according to any one of the above.