KR20010036548A - A fabric used in wool packing - Google Patents

Abstract

PURPOSE: A wool pack fabric used for packing material of wool in which binder resin is treated on the surface, and all yarns or a part that comprise fabrics are polyamide filaments processed by air texturing is provided, which promotes productivity, prevents offensive odor due to an organic solvent, and enables wool under storing to maintain dyeing uniformity as it is. CONSTITUTION: In a wool pack fabric on which binder resin is dipped, sprayed or printed, all yarns or a part that comprise fabrics are polyamide filaments processed by air texturing, wherein the polyamide filaments have a total fineness of 630 to 1,890 denier. The fabric has a warp thread density and a weft thread density 15 to 25 ends/inch.

Description

Forge for Woolpack {A fabric used in wool packing}

The present invention relates to a forge for wool packs.

Wool packs must be provided with excellent tensile and tear strength to prevent bursting, since wool obtained from sheep is placed in a mold made in a predetermined form for packaging and transportation and pressed under strong pressure.

Preferably the tensile strength should be at least 250kg / 5cm as measured by ASTM D 5035 method and the tear strength should be at least 45kg as measured by Australian Woolpack Standard NO.3 2.3 method. In addition, when working outdoors, ultraviolet (UV) stability is required in consideration of deterioration of physical properties due to embrittlement of wool pack forges due to ultraviolet rays.

Other important properties required for wool packs are the stiffness and anti-slip performance to impart morphological stability of the forge. The wool pack containing the wool goes through the transportation process. Generally, the wool pack is loaded into a vehicle or a ship container in several stages. However, if the anti-slip property is too low, the phenomenon that the loaded wool pack is collapsed during transportation due to the low friction, and if too high, there is a disadvantage that handling is not easy.

Such anti-slip properties preferably have a coefficient of friction of 3.5-6.0 N as measured by the Australian Wool Pack Standard NO.3 2.5 method. As described above, a method of manufacturing a conventional wool pack fabric for satisfying various characteristics required for the wool pack fabric will be described.

Conventionally, as a wrapping paper (hereinafter referred to as a "wool pack") containing wool, a lot of polypropylene or high-density polyethylene yarns are woven in plain weave. In order to improve the packing property of the wool pack made of such a forge has been used through the steel pipe on the side of the wool pack.

As such, when the steel pipe is penetrated to the side of the wool pack, the packing property of the wool pack is improved, but the risk of tearing the forge constituting the wool pack by the steel pipe increases. If the fork for wool pack is torn, polypropylene or high-density polyethylene fibers constituting the wool pack fork are mixed with the wool stored in the wool pack, resulting in a non-uniform dyeing of wool. Such non-uniformity is due to the different dyeability between wool and polypropylene or high density polyethylene fibers.

Recently, wool pack materials similar to wool are dyed. The dyes used for dyeing wool are generally the most widely used dyes, acid dyes, metal complex dyes, and some bat dyes and reactive dyes can be used. Fibers similar in color to wool can be dyed with the dyes mentioned above as silk and nylon. However, for dogs, the price is high and their physical properties do not meet the performance requirements of the wool pack.

In general, polyester has high physical properties, but when dyed with a dye used for wool, the wool is dyed, but polyester is not dyed at all, so it cannot be used as a wool pack. Therefore, recently, polyamide yarns have been used a lot in the manufacture of wool packs to solve the dyeing unevenness problem.

On the other hand, in order to impart anti-slipness and fabric stiffness to wool pack papers, methods of dipping, spraying or printing binders containing acrylic resins and / or melamine resins as main components on woven fabrics have been proposed. .

Such a method can impart the fabric stiffness of the forge for wool packs, but does not satisfy the anti-slip property at the same time, so there is a problem in that a process of applying a second anti-slip agent is required.

In addition, since the conventional wool pack forge mainly uses a general polyamide-based multifilament that is not subjected to air texturing processing, in order to impart proper anti-slipness to the paper by binder resin treatment, a larger amount of binder has to be attached to the paper. As a result, the drying and curing time of the forge is long, the productivity is lowered, there is a problem that the odor is high due to the large amount of volatilized organic solvent during the manufacturing process.

An object of the present invention is to prepare a wool pack for paper that satisfies the basic physical properties required for wool pack paper, but can be given an appropriate anti-slip even with a smaller amount of binder resin treatment.

The present invention is to provide a wool pack forge that can maintain the uniformity of dyed wool as it is, and has good anti-slip properties even with a small amount of binder resin treatment to improve productivity, while having basic properties such as stiffness. do.

The present invention relates to a wool pack forge and a method of manufacturing the same.

More specifically, the present invention relates to a wool pack forge, characterized in that all or part of the yarn constituting the forge is an air texturing processed polyamide-based multifilament.

The present invention is characterized by using polyamide-based multifilament which is air-textured for all or part of warp and weft yarns when weaving the paper so that good anti-slip property can be expressed even with a small amount of binder treatment.

In other words, weaving the paper using polyamide-based multifilament treated with air texture as warp and weft yarn, or some of the warped or weft yarn using polyamide multifilament with air-textured finish, It is characterized by weaving the forge using a non-generic polyamide-based multifilament.

Hereinafter, the present invention will be described in detail.

First, the present invention uses only the air-textured polyamide multifilament as the warp and weft, or the air-textured polyamide multifilament and the air-textured general polyamide multifilament two kinds of warp and weft Used together as wefts, weaving the forge into plain weave, ribstop or rib tissue.

As a weft yarn, it is more advantageous to reduce the processing cost of the yarn by using air-textured polyamide-based multifilament and general polyamide-based multifilament together. In this case, too, the desired anti-slipness can be given sufficiently.

More specifically, one of the theft yarns uses multi-filament processed by air-texuring, and the other direction uses general multifilament that has not been air-textured, or multi-filament and air-textured by air-tightened yarn. It is also possible to alternately arrange and use unprocessed ordinary multifilaments.

Air texuring is a process in which an irregular loop is formed on a multifilament by overfeeding the multifilament into a nozzle for air texuring in which turbulent flow of compressed air occurs.

The multifilament is fed into the nozzle by the feed roller and then exited out of the nozzle by the delivery roller and wound up by the winding roller. At this time, the rotation speed of the supply roller is made faster than the rotation speed of the delivery roller. The speed difference between these rollers is the over feed rate.

In order to remove the unstable loop formed on the multifilament, it is desirable to apply tension by making the rotational speed of the winding roller faster than the rotational speed of the delivery roller. The supply roller may be composed of one pair or two or more pairs, and in the case of two pairs, airtexuring may be performed while plying two types of multifilaments. In addition, two pairs of feed rollers can be rotated at different speeds to select core (Core) and effect (Effect).

In the present invention, it is preferable that the overfeed rate (overfeed rate) is 20 to 50%, the air pressure is 4 to 10 bar, and the winding speed is 300 to 800 m / min during the air texturing process. However, the present invention does not specifically limit the air texturing processing conditions.

In general, when the air pressure and the overfeed rate increase, the turbulence in the nozzle increases, the number of loops formed on the multifilament increases, and the stability of the loop decreases. In addition, the strength and cutting elongation of the multifilament is reduced and fineness is increased. Therefore, it is desirable to control the air pressure and the overfeed rate in an appropriate range during airtexuring processing.

It is preferable to use polyamide-based multifilaments such as polyamide 6 or polyamide 66 as the polyamide-based multifilament. Polyamide-based yarns have a -CONH, -NH ₂ or -COOH group in the molecular formula, so the dyeing property is similar to wool.

When the polyamide 6 and polyamide 66 are compared, the dyeing pipe excitation is the same, but the polyamide 6 has the same bonding direction as the molecular chain, but the polyamide 66 is the reverse, so there is a difference in hydrogen bonding.

Therefore, polyamide 6, which has a small amount of hydrogen bonds, has a relatively large amount of amorphous regions which become salt seats, so that dyeing is relatively easy and saturation dyes are also large. Therefore, it is more preferable to use polyamide 6 multifilament as the weft yarn.

In the present invention, the fineness of the theodolite is preferably 630 to 1,890 deniers. If the fineness of the warp yarn is less than 630 denier, the desired strength cannot be obtained, and the binder requirement is increased to obtain the weight of 1.3 to 1.7 kg / pack required by the wool pack. In addition, when the strength exceeds 1,890 denier, the strength is increased, but there is a risk that the total weight is exceeded after processing.

The weft yarn density during weaving should be 15-25 copies / inch. When the weft yarn density is less than 15 bones / inch, not only the physical properties such as tensile strength required in the wool pack are satisfied, but also the wool that is stored escapes through the pores of the fabric.

In addition, when the weft density exceeds 25 bones / inch, when the wool is contained in the wool pack, the lower end of the wool pack swells like a balloon, and the pressure in the wool pack rises, so that pressure repulsion is formed in the opposite direction to the wool injection, which makes packaging difficult. .

Next, the woven wool pack paper is treated with a binder resin to impart stiffness and anti-slip property to the paper at the same time. Specifically, the woven wool pack forge is dipped in a binder resin, squeezed with mangle, and the binder resin solution is sprayed onto the dried or woven wool pack forge.

As the binder resin solution, a solution obtained by dissolving a melamine resin, an acrylic resin, a polyvinyl alcohol resin, a polyurethane resin, a polyvinyl acrylate resin, or a mixed resin thereof in water with a catalyst is used. As the binder resin solution, an aqueous solution in which Hg or Zn salicylate is dissolved in water may be used.

The wool pack forge of the present invention may be treated with a small amount of binder resin because all or a part of the warp yarns constituting the wool pack are air-textured polyamide-based multifilaments to have a higher coefficient of friction than general polyamide-based multifilaments. It exhibits anti-slip properties.

Therefore, when dipping the woven fabric in the binder resin solution, the pick-up rate in the mangle can be increased, and when the binder resin solution is sprayed on the woven fabric, the binder adhesion amount per unit area of the paper is set low. can do. As a result, the drying time of the binder resin is shortened, the productivity is increased, and the amount of organic solvent volatilized during the process is small, resulting in a comfortable working environment.

The present invention evaluates the various main properties of the forge for wool pack in the following manner.

·The tensile strength

It is measured by Australian Wool Pack Standard NO.3 2.1 method under standard conditions.

Tear strength

It is measured by Australian Wool Pack Standard NO.3 2.3 method under standard conditions.

Surface friction coefficient (anti slip)

It is measured by Australian Wool Pack Standard NO.3 2.5 method in the standard condition.

Elongation at load

It is measured by Australian Wool Pack Standard NO.3 2.7 method under standard conditions.

Hereinafter, the present invention will be described in detail through Examples and Comparative Examples. However, the present invention is not limited only to the following examples.

Example 1

Polyamide 6 yarn of 1,260 denier 204 filaments air-textured at 25% overfeed rate, 6 bar air pressure and 50 m / min winding speed, and polyamide 6 1260 denier 204 filament unair-textured The yarns are alternately used in warp and weft yarns in a 2: 2 arrangement, and these are then subjected to a normal weaving preparatory process, and then weaved into a ripstop tissue so as to have a warp density of 21 yarns / inch and a weft density of 22 yarns / inch.

Both surfaces of the forge are spray-sprayed with a solution composed of 100 parts by weight of water, 90 parts by weight of melamine-based binder, 60 parts by weight of acrylic binder, and 9 parts by weight of catalyst, and then heat-set at 150 ° C. for 20 seconds to prepare wool packs. The results of evaluation of various physical properties of the manufactured wool pack forge are shown in Table 1.

Example 2

A 1,260 denier 204 filament of 1,260 denier 204 filaments air-textured at a slope of 25% overfeed rate, 6 bar of air pressure and 50 m / min of winding speed is used as a slope, and 1,260 denier 204 filaments not processed by air-texturing. After using the polyamide 6 yarn of the yarns, they are subjected to a normal weaving preparation process, and then fabrics are manufactured by ripstop tissue so as to have a warp density of 21 bones / inch and a weft density of 28 bones / inch.

Both surfaces of the forge are spray-sprayed with a solution composed of 100 parts by weight of water, 90 parts by weight of melamine-based binder, 90 parts by weight of acrylic binder, and 9 parts by weight of catalyst, and then heat-set at 150 ° C. for 20 seconds to prepare wool packs. The results of evaluation of various physical properties of the manufactured wool pack forge are shown in Table 1.

Example 3

Polyamide 6 yarn of 1,890 denier 306 filaments air-textured at 25% overfeed rate, 6 bar air pressure and 50 m / min winding speed, and polyamide 6 1890 denier 306 filament unair-textured After the yarns are alternately used in warp and weft yarns in a 4: 4 arrangement, they are subjected to a normal weaving preparatory process, and then weaved into a ripstop tissue to produce warp densities of 14.5 bone / inch and weft density of 14.5 bone / inch.

The pouch is dipped in a binder resin solution (concentration 25% by weight) containing Hg salicylate as a main component, squeezed with mangle, and heat-fixed at 150 ° C. for 40 seconds to prepare wool pack pouches. The results of evaluation of various physical properties of the manufactured wool pack forge are shown in Table 1.

Comparative Example 1

Ripstop structure with polyamide 6 yarn of 1,260 denier 204 filaments, not air-textured, used as warp and weft yarns, and then subjected to normal weaving preparation process to have a warp density of 21 / inch and a weft density of 22 / inch. Weaving is carried out to prepare forge.

After spraying a solution consisting of 100 parts by weight of water, 90 parts by weight of melamine-based binder, 60 parts by weight of acrylic binder, 9 parts by weight of catalyst, heat-fixed at 150 ° C. for 20 seconds to prepare wool packs. The results of evaluation of various physical properties of the manufactured wool pack forge are shown in Table 1.

Comparative Example 2

Ribbed structure with 1,890 denier 306 filaments of polyamide 6 yarn (not air-texturing) used as warp and weft yarns, and then subjected to a normal weaving preparation process so that the warp density is 14.5 pieces / inch and the weft density is 14.5 pieces / inch Weaving

The pouch is dipped in a binder resin solution (concentration 25% by weight) containing Hg salicylate as a main component, squeezed with mangle, and heat-fixed at 150 ° C. for 40 seconds to prepare a wool pack pouch. The results of evaluation of various physical properties of the manufactured wool pack forge are shown in Table 1.

<Table 1> Measurement results of productivity and physical properties of wool pack forge

division productivity Properties Surface friction coefficient (N) Shape stability Example 1 slope Great 5.5 Great Weft 5.7 Great Example 2 slope Great 5.2 Great Weft 5.0 Great Example 3 slope Great 5.8 Great Weft 5.6 Great Comparative Example 1 slope usually 3.7 usually Weft 3.5 usually Comparative Example 2 slope usually 4.0 usually Weft 3.7 usually

In the case of Comparative Example 1 and Comparative Example 2, the surface friction was low, and finally, the anti-slip property was evaluated as bad. Therefore, Comparative Example 1 and Comparative Example 2 has a problem in that the amount of binder used to increase the anti-slip properties or to increase the anti-slip agent in the binder solution.

In the present invention, since all or part of the yarn constituting the forge is air-textured polyamide-based multifilament, antislip property can be improved even with a small amount of binder treatment. As a result, the drying time and curing time of the binder are shortened, thereby improving production productivity and preventing odor due to volatilization of an organic solvent in the manufacturing process.

In addition, the present invention is composed of polyamide-based multifilament can maintain the dyeing uniformity of the wool in storage.

Claims (5)

A wool pack paper, wherein all or part of the yarn constituting the paper is an air texturing processed polyamide-based multifilament. The wool pack forge according to claim 1, wherein the polyamide-based multifilament total fineness is 630 to 1,890 denier. The wool pack forge according to claim 1, wherein the warp and weft densities of the forge are 15 to 25 bones / inch. The wool pack forge according to claim 1, wherein the warp or weft of the forge is air-textured polyamide-based multifilament. 2. The wool pack forge according to claim 1, wherein the polyamide-based multifilaments which are air-textured in the warp and weft directions are alternately arranged.