KR102501744B1 - Safety pin ring kevlar aramid fabric for 230mm unguided missile submunition fuse and its manufacturing method - Google Patents

Abstract

The present invention relates to a safety pin ring Kevlar aramid fabric for a 230 mm unguided projectile submunition fuse and a method for manufacturing the same. The safety pin ring Kevlar aramid fabric for a 230 mm unguided projectile submunition fuse, according to the present invention, comprises: a Kevlar aramid thread processing process; a Kevlar aramid fabric weaving process; a skin solvent formulation process; an adhesive composition process; a skin film layer formation process; a skin film layer completion process; an adhesive layer formation process; an adhesive layer completion process; a Kevlar aramid fabric and skin film bonding process; a compressed part formation process; a joint stabilization process; a rolling process; a ripening process; a release paper separation process; a submunition fuse safety pin ring Kevlar aramid fabric completion process; and a cutting process. According to the present invention, the effect of bombs can be maximized.

Description

Safety pin ring kevlar aramid fabric for 230mm unguided missile submunition fuse and its manufacturing method

The present invention relates to a Kevlar aramid fabric for a safety pin ring for a 230mm unguided projectile submunition fuse and a method for manufacturing the same. It relates to a Kevlar aramid fabric for a safety pin ring for a 230mm unguided missile submunition fuse that connects a parent bullet and each submunition safety pin to induce the explosion of a submunition and a manufacturing method thereof.

In general, bombs are being developed in the direction of improving their performance according to the explosion at the target point by flying to the side of the enemy far away from the friendly forces as a means of minimizing damage to the friendly forces and mass annihilation of the enemy forces for the purpose of war.

Therefore, by dividing the shells into flying and carrying shells from the point of launch to the target point and sub-projectiles that explode at the target point, as a means to explode a number of submunitions loaded inside the briquettes at the target point, the air above the target point When the mother bullet is disassembled or destroyed and the child bullet is released from the mother bullet, the safety pin of the mother bullet is pulled out.

In order to effectively explode the mounted submunition after flying to the target point, the shell of this method is loaded with a safety pin to suppress the explosion inside the parent projectile, flies to the target point, and when it reaches the target point, the shell is destroyed. The 230mm unguided bullet was born by a method in which the loaded submunition is ejected from the parent bullet and exploded.

At this time, as a means to pull out the safety pin of the sub-tank emitted from the motan at the target point, the safety pin of the sub-munition is connected to the motan so that the safety pin can be pulled out with the force emitted by the sub-munition. .

Since these strings must be stored together with submunitions in a briquette with a very small storage space, the weight is small, light, and has flame retardancy and heat resistance, so that it does not break when the bomb is exploded, and when the submunition is released at the same time, it is not twisted and easily spreads. This is very important.

Accordingly, fabrics woven with Kevlar aramid threads developed by DuPont are mainly used.

However, when the Kevlar aramid fabric woven with the Kevlar aramid yarn is used as it is, it does not sufficiently satisfy the heat resistance required by the high temperature and high temperature environment while satisfying the tension and all other conditions.

However, until now, in order to satisfy the string that endures at high temperature and high heat, attempts have been made to delay heat transfer by using carbonized fibers and various non-woven fabrics inside the fiber as fillers, but these fillers increase the weight of the product, increase the thickness, and increase the usability. It has the problem of falling at the same time, so it was not a satisfactory product.

Looking at prior art and patent documents that have been developed and applied for patents so far in relation to the development of the present invention are as follows.

Patent Application No. 10-2000-0005475 (2000.02.03.) is to attach Kevlar fabric in the form of a thin non-woven fabric to the inner or outer surface of the carbon fabric, which is the raw material of the fishing rod, or between the carbon fabrics to make it integral with the carbon fabric. By heating and molding, it is possible to manufacture a fishing rod that is significantly reinforced in strength and very light in overall weight without impairing the elasticity of the carbon fabric itself, so that the user does not feel fatigue in the arms or wrists even when holding the fishing rod for a long time. It relates to a method for manufacturing a fishing rod with a Kevlar fabric made of non-woven fabric that can significantly reduce the damage of the fishing rod by smoothly absorbing the impact applied from the outside and at the same time not feeling it, and the fishing rod. A series of processes to cut the fishing rod to the size of the fishing rod to be cut, attach it to the mandrel in a rod shape, insert the mandrel with carbon fabric into a heating furnace to heat-form the fishing rod, and release the heated-formed fishing rod from the mandrel to commercialize it. In passing through, the fabric cutting process of cutting the carbon fabric and the Kevlar fabric in the form of a nonwoven fabric according to the size of the fishing rod to be molded under a temperature condition of 16 to 20 ° C., After going through the fabric cutting process, A rolling process in which the cut carbon fabric and Kevlar fabric are sequentially adhered to a mandrel under a temperature condition of 16 to 20 ° C to form a tube shape, and after the above rolling process, the carbon fabric and Kevlar fabric are sequentially adhered to the mandrel A cellophane winding process in which cellophane having a predetermined width is spirally pressed and wound to increase the adhesion between the carbon fabric and the Kevlar fabric, and after the cellophane winding process, the carbon fabric and the Kevlar fabric are sequentially adhered to the mandrel. After charging into the heating furnace, the temperature of the heating furnace is gradually raised from room temperature to 130 ~ 140 ℃ for 2 hours and 30 minutes, and the temperature is maintained at 130 ~ 140 ℃ for 30 minutes. it will go through Patent Application No. 10-2006-7007227 (2003.10.14.) has the original function of the twisted end as well as a twisted string that does not fall into space, the string itself is twisted, or the string is not entangled or released. To provide a non-metallic twisted string that can be easily formed into a shape and can be smoothly unwound from a rolled shape, a ribbon-shaped nonmetallic twisted string having a core portion composed of a non-halogen member and a wing portion, 1) the overall width of which is 1.5 to 20.0 mm, the average thickness of the wings is 0.02 to 0.2 mm, the maximum thickness of the core is 0.04 to 0.3 times the total width, 2) has a torsional strength of 5 to 15 N, and 3) tensile strength It has a rigidity with an elastic modulus of 5,000 to 30,000 Mpa, 4) has a shaping performance of 90% or more, a shaping retention rate of 70 to 95%, and a curvature in the unwinding direction of 10 degrees or less. It is characterized by maintaining a winding performance with a drawing performance and a curl radius in the winding direction maintaining a range of 50 to 200 mm. Patent Application No. 10-2011-0064939 (2011.06.30.) relates to a fabric for an airbag and an airbag for a vehicle including the same, warp fineness and weft fineness are 200 to 1,000 denier, respectively, and warp and weft densities are each 20 to 55 th/inch, and the stiffness according to the ASTM D 4032 method of the American Society for Testing and Materials is 0.79 to 1.32 kgf, and the degree of stiffness measured by the International Organization for Standardization ISO 2286-3 method is 0.10 mm to 0.45 mm, and the American material Aramid fiber fabric with a tensile strength of 150 kgf/10mm or more as measured by the ASTM D 5034 method of the Testing Association standard and a stitch strength of 150 kgf/20mm or more as measured by the ASTM D 1683 method of the American Society for Testing and Materials Testing, and a cover factor 1200 to 1855, and an airbag for the exterior of a vehicle containing an aramid fabric having a stiffness of 0.4 kgf to 1.4 kgf according to the American Society for Testing and Materials ASTM D 4032 method. By significantly lowering the airbag and securing excellent mechanical properties, when applied as an airbag for the outside of a vehicle, it is possible to provide excellent accommodatability, shape stability, and air blocking effect, and at the same time, it is possible to minimize the impact applied to the vehicle and passengers. Patent Application No. 10-2011-0144408 (2011.12.28.) is that a parachute combined with a submunition can be easily and efficiently stored in a deployment bag by simply packing it in a narrow storage space inside an intelligent bullet, and it can be stored in its original state when used. To provide a parachute deployment bag for intelligent ammunition that can be easily restored and promote rapid deployment of a parachute, wherein the parachute deployment bag for intelligent ammunition includes a body; A through-hole formed in the center of the body, one end of which is fixedly connected to the rear end of the bullet, through which the other end of the pull line for pulling the parachute deployment bag passes; A plurality of deployment straps fixed inside the edge of the body; A plurality of deployment bag strap binding units attached around the through hole to insert and bind a plurality of deployment bag lines; A plurality of umbrella line binding parts attached around the deployment sagging line binding part to insert and bind a plurality of umbrella lines connected to the lower end of the canopy of the parachute; A plurality of connecting rings attached around the periphery of the suspension line binding unit; And a cutting string inserted through a plurality of connecting rings, tied in a state in which a ring knot formed at the other end of the pulling line is hung, and cut off by the tensile force of the pulling line; It is characterized in that it includes. Patent Application No. 10-2013-0103644 (August 30, 2013) relates to para-aramid structural insulation yarn having a specific shape that further improves insulation properties while utilizing para-aramid fibers that are safe and harmless to the human body and have heat resistance, and fabrics using the same. In the case of filament yarn, the fineness is 300 to 500 denier, the number of filaments is 54 to 200, the elongation is 5 to 7%, and in the case of spun yarn, the para-aramid fiber having a yarn count of 30 to 60 is twisted A stem yarn containing 15 to 25 knots per inch formed by the process; Polyethylene terephthalate, polybutylene terephthalate, polycyclohexanedimethanol terephthalate or polytrimethylene terephthalate, and when the flame retardant thermoplastic fiber is polyamide fiber, nylon-6 (polycaprolactam), nylon-6,6, Nylon-6,12 or nylon-12 (polylauryllactam), and when the flame retardant thermoplastic fiber is a polyolefin fiber, a branch yarn of a flame retardant thermoplastic fiber of polypropylene having a total fineness of 50 to 125 denier; And a plurality of branch yarns are formed in a group and penetrated through the one knot in order to contain the air layer of the stem yarn. Patent Application No. 10-2014-0015619 (2014.02.11) discloses a multipurpose composite strap having high tensile strength and elasticity and a method for manufacturing the same, including laminated parts that are folded and adhered to the upper side based on reference lines formed at both ends. external covering; An inner cover seated on an upper surface of the outer cover material and including a seating groove concavely formed on the upper surface; And a decoration that has a predetermined elasticity and tensile strength, is made in a bar shape, is seated in the seating groove of the inner covering, and is bound in a stitching method by decorative yarn made of transparent material to be coupled and fixed to the upper surface of the inner covering. A bonding step of firstly folding and bonding the laminated portion of the outer covering to the upper surface of the outer covering along a reference line; A stitching step of seating a decorative core on the upper surface of the inner covering and binding the decorative core to the upper surface of the inner covering in a backstitch manner by means of decorative yarns and fixedly combining the decorative core; A seating step of seating the inner cover on the upper surface of the outer cover; And a cover step of combining the outer covering and the inner covering so that both ends of the outer covering surround both ends of the inner covering by using a thermal pressure method; and a multi-purpose composite strap and a manufacturing method thereof. Patent Application No. 10-2015-0154151 (November 3, 2015) provides a coating method for bulletproof Kevlar fibers for producing Kevlar fibers having excellent ballistic properties by forming a separate coating layer on the surface of Kevlar fibers. A coating method for Kevlar fibers for use, comprising: a Kevlar fiber pre-treatment step of treating the surface of the prepared Kevlar fibers; Preparing a seed solution for forming a coating layer seed on the surface of the Kevlar fiber; Preparing a growth solution for growing a coating layer on the surface of the seeded Kevlar fibers; Kevlar fiber coating layer seeding step of immersing the pretreated Kevlar fiber in a seed solution to form a coating layer seed on the surface of the fiber; and a Kevlar fiber coating layer growth step of growing the coating layer by immersing the Kevlar fibers seeded with the coating layer in a growth solution. Patent Application No. 10-2016-0161848 (November 30, 2016) discloses an aramid structure manufacturing method, 1) the upper and lower supply steps of the aramid structure by a pair of upper and lower supply rollers installed opposite to each other at a constant distance; 2) a core material supply step between the upper and lower portions of the aramid structure by means of a pair of core portion supply rollers located between the pair of upper and lower portion supply rollers; 3) transforming the shape of the core portion supplied by the core portion material supply step into a waveform by using a heating and pressing plate; 4) a binding step of vertically pressing with a pair of compression rollers in order to bind the core portion deformed to the waveform supplied in step 3 between the upper and lower portions of the aramid structure supplied in step 1); and 5) fixing the aramid structure bound after step 4) with a pair of heat treatment plates. Patent Application No. 10-2016-0180352 (2016.12.27.) is an aramid structure manufacturing apparatus, 1) a pair of upper and lower supply rollers installed oppositely at a constant distance to supply the upper and lower parts of the aramid structure; 2) a pair of core portion supply rollers located between the pair of upper and lower supply rollers and supplying material to the core portion between the upper and lower portions of the aramid structure; 3) a pair of heating and pressing plates that heat and press the core supplied from the core supply roller to easily change the shape of the wave; 4) a pair of compression rollers for vertically pressing the upper and lower portions of the aramid structure provided from the pair of upper and lower supply rollers and the corrugated core portion deformed by the heating and pressing plate to be bound to the upper and lower inner surfaces; 5) a pair of heat treatment plates for stabilizing the aramid structure bound to the compression roller and 6) an aramid structure manufacturing device that may consist of a cooling device for fixing the aramid structure stabilized by the heat treatment plate Aramid structure composed of It is about manufacturing equipment. Patent Application No. 10-2018-7033409 (2017.04.18.) is a divisible parachute grenade, which includes a grenade casing, a nose cone, an explosive fuse, a splitting powder, a warhead, a parachute device, a grenade bottom and a support device, and the support device is annular and includes a pretension sector element fixed to the retaining ring in a recess on the inner side of the grenade casing, the sector element having a tension disposed around the annular support device through a recess in the sector element pretensioned by a ring, the support device being arranged radially expandable in a recess on the inner side of the grenade casing at the rear of the warhead and supporting the warhead in a protruding position during the acceleration phase of the grenade; , a divisible parachute grenade in which the warhead remains with the grenade after it is separated from the grenade.

In the present invention, when the bullets fly and reach the target point, when the loaded bullets are released from the bullets as the bullets are destroyed, the string connecting the bullets and the safety pins of the bullets is light in weight and cut off in order to pull out the safety pins of the bullets The purpose is to produce and supply Kevlar aramid fabric, a safety pin ring for a 230mm unguided bullet fuse that has flame retardancy and heat resistance, and at the same time, the string is not twisted or tangled when the bullet is released, and the bullet is easily released and the bullet is spread.

In order to achieve the above object, the present invention impregnates a kevlar aramid yarn having a fineness of 150 to 250 denier into a non-conductive fluorinated binder to at least 50 inters per yard (yd: yard). A Kevlar aramid yarn processing process of lacing, drying, and then bunconing; In the Kevlar aramid yarn processing process, a Kevlar aramid yarn impregnated with a non-conductive fluorinated binder and interlaced at least 50 per yard (yd: yard) has a density of 30 to 60 per inch of warp and weft yarn. A Kevlar aramid fabric weaving process for weaving in plain weave to become; By adding 27 to 29 parts by weight of methyl ethyl ketone, 29 to 31 parts by weight of polyurethane, and 5 to 10 parts by weight of yellow pigment to 41 to 43 parts by weight of N-dimethylformamide (N-formyldimethylamine: N-FORMYLDIMETHYLAMINE) A skin agent composition step of forming a skin agent; Composing an adhesive by adding 0.1 to 0.5 parts by weight of benzene, 1,3-diisocyanatomethyl toluene diisocyanate (mixed isomers) acetic acid, and 24 to 24.9 parts by weight of ethyl acetate to 75 to 75.5 parts by weight of PU (polyurethane plutonium) An adhesive composition step to do; A skin film layer forming step of forming a skin film layer by evenly applying the skin solvent prepared in the skin solvent composition step to the surface of the release paper having the same width or plus tolerance as the width of the Kevlar aramid fabric woven in the Kevlar aramid fabric weaving process ; In the process of forming the skin film layer, the release paper on which the skin film layer was formed by being evenly applied to the surface of the release paper was sequentially passed through a drying chamber in which heating zones were formed at 60 ° C, 80 ° C, 100 ° C, and 120 ° C, and the solvent was blown away. a skin film layer completion step of completing the skin film layer; an adhesive layer forming step of forming an adhesive layer by applying the adhesive prepared in the adhesive composition step to the surface of the skin film layer molded on the surface of the release paper after the solvent is volatilized in the skin film layer forming step; In the adhesive layer forming step, an adhesive is applied to the surface of the skin film layer molded on the surface of the release paper to dry the release paper on which the adhesive layer is formed in a drying chamber in which a heating zone is formed at 60 ° C, 80 ° C, 100 ° C, and 120 ° C to form an adhesive layer An adhesive layer completion step to complete; In the adhesive layer completion process, one side of the Kevlar aramid fabric woven in the Kevlar aramid fabric weaving process is laminated on the side where the adhesive layer is completed on the surface of the skin, which is applied to the surface of the release paper and completed, and presses and presses under high pressure to bond them together to be integral with each other Kevlar aramid fabric and skin film bonding process; In the process of bonding the Kevlar aramid fabric and the skin film, the outer circumferential surface is formed with long grooves formed in the transverse direction at regular intervals so that the balance line formed in the transverse direction is formed at regular intervals in the state where the skin is integrally bonded to one side of the Kevlar aramid fabric. A balance line forming step of pressing with a roller so that balance lines formed in the transverse direction are formed at regular intervals in the longitudinal direction; A bonding stabilization step of stabilizing the bonding state in a hot chamber at 100 to 120 ° C. in a state in which balanced lines are formed at regular intervals in the transverse direction transverse to the longitudinal direction in the balanced line forming process; A rolling step of integrally bonding the skin to one side of the Kevlar aramid fabric in the bonding process of the Kevlar aramid fabric and the skin film and rolling without separating the release paper in a state in which the bonding state is stabilized in the bonding stabilization process to form a fabric roll; An aging step of discharging volatile substances by aging the Kevlar aramid fabric in which the skin is integrally bonded to one side rolled in the rolling step in an aging room at 60 to 80 ° C for at least 48 hours; A release paper separation step of separating the release paper from the skin by releasing the roll in which the skin bonded to one side of the Kevlar aramid fabric in the aging process is integrated by aging and volatile substances are discharged; The skin film layer formation process, skin film layer completion process, adhesive layer formation process, adhesive layer completion process, Kevlar aramid fabric and A safety pin ring Kevlar aramid fabric completion process for a new crown by performing a skin film bonding process, a bonding stabilization process, a rolling process, an aging process, and a release paper separation process in order to complete the safety pin ring Kevlar aramid fabric for the new crown; The cutting process of cutting the Kevlar aramid fabric of the safety pin ring for the new priest completed in the safety pin ring Kevlar aramid fabric completion process for the new priest to be suitable for the safety pin ring for the 230mm unguided bullet new priest; As a method for manufacturing safety pin rings for pipes, a Kevlar aramid thread with a fineness of 150 to 250 denier is impregnated with a non-conductive fluorinated binder, interlacing at least 50 per yard, and warp and weft yarns. On both surfaces of the Kevlar aramid fabric woven in a plain weave so that the density is 30 to 60 per inch, a skin with PU (polyurethane plutonium) as the main component and pigment added is integrally bonded, Zir is a Kevlar aramid fabric that is a safety pin for a 230mm unguided bullet fuse with balanced lines at regular intervals in the transverse direction.

The safety pin ring Kevlar aramid fabric for the 230mm unguided missile submunition fuse according to the present invention can be simply and easily stored in a narrow storage space in the bullet body, even if used after being compressed and stored for a long time while stored in the bullet body. It is an invention with a novel effect that maximizes the effect of the bomb by pulling out the safety pin while helping the spread of submunitions with rapid deployment without distortion or entanglement during use and no deformation of the state due to external factors such as temperature change. .

1 is a process flow diagram illustrating a process in the practice of the present invention.
Figure 2 is an exemplary view of the configuration of the Kevlar aramid fabric for the safety pin ring obtained in the practice of the present invention.
Figure 3 is an exemplary state using the present invention as a safety pin ring.
4 is an exemplary state in which the present invention is implemented in self-tan.
5 is an exemplary view of a roller configuration state in which a balanced line forming process of the present invention is performed.
Figure 6 is an enlarged cross-sectional view of the roller illustrated in Figure 5;
Figure 7 is an enlarged cross-sectional view illustrating another configuration of the roller illustrated in Figure 5;

The present invention to achieve the above object will be described in detail according to the implementation process.

Kevlar aramid yarn processing process;

A kevlar aramid yarn with a fineness of 150 to 250 denier is impregnated with a non-conductive fluorinated binder, interlaced at least 50 times per yard, dried, and then bundled.

Here, Kevlar is an aromatic polyamide-based organic fiber developed by DuPont, which has a unique combination of high strength, high modulus of elasticity, toughness and thermal stability with the unique properties and unique chemical composition of aromatic polyamide (aramid). will be.

Kevlar aramid fabric weaving process;

In the Kevlar aramid yarn processing process, a Kevlar aramid yarn impregnated with a non-conductive fluorinated binder and interlaced at least 50 per yard (yd: yard) has a density of 30 to 60 per inch of warp and weft yarn. Weave in plain weave so that

Here, weaving the Kevlar aramid fabric in a plain weave is for the purpose of minimizing deformation such as twisting or messing and minimizing the weight of the fabric.

At this time, when weaving the Kevlar aramid fabric, the seams in the longitudinal direction are dense by reducing the seams rather than the blades, while the seams are arranged larger than the spacing between the blades to reduce the amount of seams, thereby reducing the weight per unit length of the fabric. may be

skin solvent composition process;

By adding 27 to 29 parts by weight of methyl ethyl ketone, 29 to 31 parts by weight of polyurethane, and 5 to 10 parts by weight of yellow pigment to 41 to 43 parts by weight of N-dimethylformamide (N-formyldimethylamine: N-FORMYLDIMETHYLAMINE) Form a skin solvent.

The metal ethyl ketone used as the solvent here has a chemical formula of CH3COCH2CH3 (molecular weight: 72), methyl ethyl ketone (MEk; 2-butanone; methylacetone) concentration of 99% or more.

In addition, the yellow pigment may be anti-color based, and the addition amount will change according to the degree of color, so it will not be limited to the unit.

adhesive composition process;

Composing an adhesive by adding 0.1 to 0.5 parts by weight of benzene, 1,3-diisocyanatomethyl toluene diisocyanate (mixed isomers) acetic acid, and 24 to 24.9 parts by weight of ethyl acetate to 75 to 75.5 parts by weight of PU (polyurethane plutonium) do.

The adhesive formed here adds affinity between the skin solvent and the Kevlar aramid fabric, so that the skin film is integrally pressed to the Kevlar aramid fabric.

Skin film layer forming process;

A skin film layer is formed by evenly applying the skin solvent prepared in the skin solvent composition step to the surface of the release paper having the same width or plus tolerance as the width of the Kevlar aramid fabric woven in the Kevlar fabric weaving process.

Forming the skin film layer on the release paper in this way is to uniformly configure the skin film layer on the surface of the Kevlar fabric.

skin film layer completion process;

In the process of forming the skin film layer, the release paper on which the skin film layer was formed by being evenly applied to the surface of the release paper was sequentially passed through a drying chamber in which heating zones were formed at 60 ° C, 80 ° C, 100 ° C, and 120 ° C, and the solvent was blown away. Complete the skin film layer.

Here, forming a drying chamber by forming a multi-stage heating zone is to prevent a fire and to ensure that the composition of the skin is evenly arranged.

adhesive layer forming process;

In the skin film layer forming process, the solvent is volatilized and the adhesive prepared in the adhesive composition process is applied to the surface of the skin film layer formed on the surface of the release paper to form an adhesive layer.

adhesive layer completion process;

In the adhesive layer forming step, an adhesive is applied to the surface of the skin film layer molded on the surface of the release paper to dry the release paper on which the adhesive layer is formed in a drying chamber in which a heating zone is formed at 60 ° C, 80 ° C, 100 ° C, and 120 ° C to form an adhesive layer complete

Kevlar aramid fabric and skin film bonding process;

In the adhesive layer completion process, one side of the Kevlar aramid fabric woven in the Kevlar aramid fabric weaving process is laminated on the side where the adhesive layer is completed on the surface of the skin, which is applied to the surface of the release paper and completed, and presses and presses at high pressure to bond them together so that they are integral with each other .

The work at this time will be said to be very effective if hot rollers are installed to perform high-pressure hot pressing.

balance line forming process;

In the process of bonding the Kevlar aramid fabric and the skin film, the outer circumferential surface is formed with long grooves formed in the transverse direction at regular intervals so that the balance line formed in the transverse direction is formed at regular intervals in the state where the skin is integrally bonded to one side of the Kevlar fabric. By pressing with a roller, the balance lines formed in the transverse direction are formed at regular intervals in the longitudinal direction.

Here, the Kevlar fabric in which the skin is integrally compressed is formed at regular intervals in the transverse direction so that the balance line is formed at regular intervals. This is to prevent twisting and fraying due to folding.

junction stabilization process;

In the process of bonding the Kevlar aramid fabric and the skin film, the bonding state is stabilized in a hot chamber at 100 to 120 ° C. in a state where the skin is integrally bonded to one side of the Kevlar fabric.

rolling process

In the process of bonding the Kevlar aramid fabric and the skin film, the skin is integrally bonded to one side of the Kevlar aramid fabric, and the roll is formed by rolling without separating the release paper in a state in which the bonding state is stabilized in the bonding stabilization process.

aging process;

The Kevlar aramid fabric in which the skin is integrally bonded to one side rolled in the rolling process is aged for at least 48 hours in an aging room at 60 to 80 ° C to discharge volatile substances.

release paper separation process;

In the aging process, the skin bonded to one side of the Kevlar aramid fabric is integrated by aging, and the release paper is separated from the skin by unwinding the roll in a state in which volatile substances are discharged.

At this time, the separated release paper is not discarded but reintroduced to the skin film layer formation process and continuously and repeatedly used to minimize pollutant generation and resource waste.

Kevlar Aramid Fabric Finishing Process for Safety Pin Rings for Jatan Priests;

The skin film layer formation process, skin film layer completion process, adhesive layer formation process, adhesive layer completion process, Kevlar aramid fabric and The skin film bonding process, balance line formation process, bonding stabilization process, rolling process, aging process, and release paper separation process are sequentially performed to complete the safety pin ring Kevlar aramid fabric for the new fuse.

The skin integrally bonded to both surfaces of the Kevlar fabric through the above process maintains its original form without loosening until the purpose of using it as a safety pin for a 230mm unguided bullet fuse is fulfilled by cutting the Kevlar aramid fabric woven in plain weave. This is to ensure that the safety pin can be pulled out without losing tension.

cutting process;

The safety pin ring Kevlar aramid fabric for the self-tank fuse completed in the process of completing the safety pin ring Kevlar aramid fabric for the self-shot fuse is cut to fit the safety pin ring for the 230mm unguided bullet fuse.

The present invention, obtained by sequentially carrying out the above processes, is obtained by impregnating a kevlar yarn having a fineness of 150 to 250 denier into a non-conductive fluorinated binder, and interlacing at least 50 per yard (yd: yard). ) and what;

In the kevlar yarn processing process, a kevlar yarn impregnated with a non-conductive fluorinated binder and interlaced at least 50 per yard (yd: yard) has a density of warp and weft yarns of 1 inch Kevlar aramid fabric woven in plain weave to be 30 to 60 per;

A skin film to which PU (polyurethane plutonium) as a main component and pigments are added integrally adhered to both surfaces of the Kevlar aramid fabric woven in the Kevlar fabric weaving process;

To obtain a safety pin ring Kevlar aramid fabric for a 230mm unguided bullet fuse in which balance lines are formed at regular intervals in the transverse direction transversely to the Kevlar fabric to which the skin film is integrally bonded.

As illustrated in FIG. 3 obtained by the present invention described above, a safety pin ring for a 230mm unguided bullet fuse in which the skin film 16 is integrally adhered to both surfaces of the Kevlar aramid fabric 15 Kevlar aramid fabric is cut to obtain a safety pin ring (10) is connected to the safety pin 101 as shown in FIG. 4, folded, and fixed with a clip.

In this way, the safety pin 101 to which the safety pin ring 10 of the present invention is coupled is coupled to the self-tan 100 and mounted inside the brittle (not shown), so that the safety pin ring 10 is again connected to the brittle to complete.

10: safety pin ring 15: Kevlar aramid fabric 16: skin film
100: Zatan 101: Safety pin

Claims (3)

Kevlar aramid yarn with a fineness of 150 to 250 denier is impregnated with a non-conductive fluorinated binder, interlaced at least 50 times per yard, dried, and then kevlar aramid yarn processed. Department of Justice;
In the Kevlar aramid yarn processing process, a Kevlar aramid yarn impregnated with a non-conductive fluorinated binder and interlaced at least 50 per yard (yd: yard) has a density of 30 to 60 per inch of warp and weft yarn. A Kevlar aramid fabric weaving process for weaving in plain weave to become;
By adding 27 to 29 parts by weight of methyl ethyl ketone, 29 to 31 parts by weight of polyurethane, and 5 to 10 parts by weight of yellow pigment to 41 to 43 parts by weight of N-dimethylformamide (N-formyldimethylamine: N-FORMYLDIMETHYLAMINE) A skin agent composition step of forming a skin agent;
Composing an adhesive by adding 0.1 to 0.5 parts by weight of benzene, 1,3-diisocyanatomethyl toluene diisocyanate (mixed isomers) acetic acid, and 24 to 24.9 parts by weight of ethyl acetate to 75 to 75.5 parts by weight of PU (polyurethane plutonium) An adhesive composition step to do;
A skin film layer forming step of forming a skin film layer by evenly applying the skin solvent prepared in the skin solvent composition step to the surface of the release paper having the same width or plus tolerance as the width of the Kevlar aramid fabric woven in the Kevlar aramid fabric weaving process ;
In the process of forming the skin film layer, the release paper on which the skin film layer was formed by being evenly applied to the surface of the release paper was sequentially passed through a drying chamber in which heating zones were formed at 60 ° C, 80 ° C, 100 ° C, and 120 ° C, and the solvent was blown away. a skin film layer completion step of completing the skin film layer;
an adhesive layer forming step of forming an adhesive layer by applying the adhesive prepared in the adhesive composition step to the surface of the skin film layer molded on the surface of the release paper after the solvent is volatilized in the skin film layer forming step;
In the adhesive layer forming step, an adhesive is applied to the surface of the skin film layer molded on the surface of the release paper to dry the release paper on which the adhesive layer is formed in a drying chamber in which a heating zone is formed at 60 ° C, 80 ° C, 100 ° C, and 120 ° C to form an adhesive layer An adhesive layer completion step to complete;
In the adhesive layer completion process, one side of the Kevlar aramid fabric woven in the Kevlar aramid fabric weaving process is laminated on the side where the adhesive layer is completed on the surface of the skin, which is applied to the surface of the release paper and completed, and presses and presses under high pressure to bond them together to be integral with each other Kevlar aramid fabric and skin film bonding process;
In the Kevlar aramid fabric and skin film bonding process, it is applied to the surface of the Kevlar aramid fabric and the surface of the release paper, and the finished skin is compressed to be integral. Bonding stability process of stabilizing the bonding state in a hot chamber at 100 ° C. to 120 ° C. class;
A rolling step of integrally bonding the skin to one side of the Kevlar aramid fabric in the bonding process of the Kevlar aramid fabric and the skin film and rolling without separating the release paper in a state in which the bonding state is stabilized in the bonding stabilization process to form a fabric roll;
An aging step of discharging volatile substances by aging the Kevlar aramid fabric in which the skin is integrally bonded to one side rolled in the rolling step in an aging room at 60 to 80 ° C for at least 48 hours;
A release paper separation step of separating the release paper from the skin by releasing the roll in which the skin bonded to one side of the Kevlar aramid fabric in the aging process is integrated by aging and volatile substances are discharged;
The skin film layer formation process, skin film layer completion process, adhesive layer formation process, adhesive layer completion process, Kevlar aramid fabric and A safety pin ring Kevlar aramid fabric completion process for a new crown by performing a skin film bonding process, a bonding stabilization process, a rolling process, an aging process, and a release paper separation process in order to complete the safety pin ring Kevlar aramid fabric for the new crown;
230, characterized in that it is made by sequentially performing the cutting process of cutting the safety pin ring Kevlar aramid fabric for the self-shot fuse completed in the safety pin ring Kevlar aramid fabric completion process for the self-shot fuse to fit the safety pin ring for the 230 mm unguided bullet fuse. Method for manufacturing a safety pin ring for a pre-guided missile submunition fuse. a kevlar aramid yarn having a fineness of 150 to 250 denier impregnated with a non-conductive fluorinated binder and interlacing at least 50 per yard;
In the Kevlar aramid yarn processing process, a Kevlar aramid yarn impregnated with a non-conductive fluorinated binder and interlaced at least 50 per yard (yd: yard) has a density of 30 to 60 per inch of warp and weft yarn. A Kevlar aramid fabric 15 that is woven in plain weave so as to be;
A skin film 16 having PU (polyurethane plutonium) as a main component and adding pigment to both surfaces of the Kevlar aramid fabric woven in the Kevlar aramid fabric weaving process is integrally bonded;
The skin film 16 is integrally bonded to the Kevlar aramid fabric, characterized in that the balance line is formed at regular intervals in the transverse direction across the longitudinal direction Kevlar aramid fabric. According to claim 1,
In the state where the skin is integrally bonded to one side of the Kevlar fabric in the Kevlar aramid fabric and skin film bonding process between the Kevlar aramid fabric and skin film bonding process and the bonding stabilization process, in the Kevlar aramid fabric and skin film bonding process, Kevlar In the state where the skin is integrally bonded to one side of the aramid fabric, the balance line formed in the transverse direction is compressed with a roller formed at regular intervals in the transverse direction on the outer circumferential surface so that the balance line formed in the transverse direction is formed at regular intervals, so that the balance line formed in the transverse direction It is formed at regular intervals in the longitudinal direction. A method for manufacturing a safety pin ring Kevlar aramid fabric for a 230 mm unguided bullet fuse, characterized in that it further comprises a balance line forming process.

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