Self-crimpable polyamide filament

[Detailed Description of the Invention]

It is related with this filament that has copoly amide as a specific more high contraction ingredient about the two-ingredient boria Midfee lamento which can form p). U.S. Pat. No. 3,399,108 is made into the self-crimpable (sel.f-crimpable) polyamide filament of the kind consisting of two sorts of ingredients which changes. The ingredient of a way is gay polyamide and another side is indicating the filament which is more nearly contractile copoly amide. Poly (hexamethylene adipamide) is indicated as it is suitable gay polyamide. In the indicated copoly amide, the random copoly amide of the kind which consists of a hexamethylene adipamide unit with hexamethylene isophthalamide middle rank and which changes, and the thing which contains 20 thru/or 40% of the weight of a hexamethylene isophthalamide unit especially are contained. Although these copoly amide can provide providing suitable crimpability (crimpability) to some end uses with sufficiently high contraction, To poly (hexamethylene adipamide), since the melting point of these things is low, the filament which may bring about the difficulty on processing between fusion silk thread spun, and is generated to some application may lack in recovery and dimensional stability of Crimp under existence of hygroscopic surface moisture. As opposed to the publicly known two-ingredient polyamide filament to which the object of the present invention uses hexamethylene adipamide and a hexamethylene isophthalamide unit as a substrate, It is a polyamide filament of the self-crimpability which provides the filament which has good textile treatment nature and the improved silk-thread-spun nature with the improved textiles characteristic and which can obtain easily and is moreover manufactured from A of an economical price, and the Maher material. Other objects will become clear from the following disclosure. The present invention is made into two ingredients of sheath core composition filament which can form Crimp of a screw type at the time of relaxation, the poly (hexamethylene adipamide) sheath which constitutes the amount % of 35 thru/or 50@ of a filament substantially and by which for Arrangement was carried out -- and It is at least about 60% of the weight of a hexamethylene adipamide unit substantially, It consists of about 15 % of the weight thru/or 30% of the weight of hexamethylene isophthalamide middle rank and about 5 % of the weight thru/or 10% of the weight of a hexamethylphthalamide unit, It is related with the filament which consists of a 3 yuan copoly amide core which consists of the ratio of weight % of a hexamethylene isophthalamide unit versus hexamethylphthalamide unit being between 1.5 thru/or 6.0, preferably 1.5 thru/or 3.0, and which was allocated in eccentricity. The filament of the present invention consists of copoly amide of the ratio as which hexamethylene adipamide, △, Xamethylene isophthalamide, and - and a Xamethylene terephthalamide unit were specified, It is nylon 2 which have poly (hexamethylene adipamide) sheath by which for Arrangement was carried out ingredient Filanon[which surrounded the core allocated in eccentricity. The sheath and the core are continuously extended along the length direction of a filament in both. If heated in few tension or states where there is no tension, Crimp of a screw type will be induced by the difference in contraction of two ingredients, but copoly amide serves as an ingredient of high contractility here. filament yarn (y a, r n) -- there -- a spandex filament (,) spandexfilament -- the bottom of long Shoes which this thing is committing as single cover yarn (Cover yarn) of business (h o s e) -- like It has many attributes which make especially useful the thing of a lacing-up textiles cloth structure (kni t fabri c st ruct ure) smell lever. The ingredient of low cost, the ease of manufacture, high Crimp progress nature, and high Crimp recovery nature are in this attribute. This filament can be spun and processed with the usual art using a publicly known device. In order to obtain the maximum crimpability in a standard circular section filament, Namely, in order to acquire the highest Crimp level at the time of relaxation of the extended two-ingredient filament, At least side must be carried out from the axis of the filament so that, as for a core, what has the thickness by which only a very thin sheath is equivalent to about 1% of the total diameters of a filament, for example may separate this from the outside of a filament. United States patent 3,316*No. 589 has indicated the silk-thread-spun cap and art for spinning this filament. The filament section like what is shown in Drawing 1 of United States patent No. 4.069.363 is preferred. The sheath must constitute 35% of the weight of a filament, 50 % of the weight preferably 40 % of the weight thru/or 45 % of the weight. Since the filament which both ingredients of the filament of the present invention avoid the difficulty of processing which is not preferred, and To, and has good intensity and crimpability is provided, Each polymer which must be pushed out from polymer of the molecular weight which generates textiles can be manufactured according to the art which a duty field may be sufficient as and is known. For maximization of progress of silk-thread-spun nature and Crimp, it is preferred that sheath polymer has the relative viscosity (RV) of 45 thru/or 55 within the limits, and core copoly amide has about 13 thru/or RV with few 14 units. The copoly amide of a core must have the balance of the characteristic needed in order to provide high-crimping and Crimp recovery nature in a two-ingredient filament. This thing is a basis of the conditions which may be received commercially again, and since silk thread spun and extension whose satisfaction is possible are permitted, it must also have sheath polymer and processing compatibility. Combination of this crimpability, Crimp recovery nature, and processability, Copoly amide is at least about 60% of the weight of a hexamethylene adipamide (6, 6) unit substantially, It consists of about 15 % of the weight thru/or 30% of the weight of a hexamethylene isophthalamide (6I) unit and at least about 5 % of the weight thru/or 10% of the weight of a hexamethylphthalamide (6T) unit, It realizes, when the ratios of 6 I pair BTli grade are 1.5 thru/or 6*0 preferably about 1.5 thru/or about 3.0. When a 6T unit exists in copoly amide, a two-ingredient filament is provided with high crimpability, but although Crimp recovery nature is especially important in the end use of haberdashery (hosiery), it will become low. In order to give suitable Crimp for a filament, an at least about 15% of the weight of 6T unit is required. Crimp recovery nature is damaged when many 6I middle rank exists from 30 % of the weight. By adding a 6T unit to copoly amide, the Crimp recovery characteristic of a filament is improved and fusion silk-thread-spun performance is improved. in order to bring the increase which is a foregone conclusion to Crimp recovery nature -- 1. -- at least about 5% of the weight of 6T1 place is needed. However, as long as increase of the extension destruction (d raw-b reaks) between the reduction which is not preferred as for crimpability, or processing of a filament shall be avoided, don't exceed the maximum of 10 6T unit % of the weight. Hot sweet rice Ox i■ head: The tractive characteristics of yarn thread were measured with the Instron tensile test machine. Before the examination, the conditioning of the yarn put together was carried out for at least 2 hours in 65±2% the atmosphere of 170±2 degrees F of RH(s). The thing with a sample length of 10 inches (25 or 4 cm) was clamped between the jaw shaped parts (jaw) of a testing machine. Tenacity (Te nac i t y) (T) of Uyan which obtained the stress-strain curve is called for as what divided the load (g unit) in a damaging point by the number of deniers of yarn, expanding a yarn sample at the rate of 12 inch [/minute ]/(a part for 30 and 5Cm/). Growth (%E) is % of the increase in the length of the sample in a damaging point. A modulus is measured as an initial slope of a stress-strain curve. Seniority: That [ 1050-denier ] or To of yarn was wound up on the denier reel (denier reel) by the rotation needed for giving cold about 44 inches (112 cm) in length. skein was hung at the rotary magazine (rotary magaz i ne) (the handling which can be lent 30 is possible), and the conditioning was carried out for at least 30 minutes under 2*5 g of load with the atmosphere which are RH and 70±2 degrees F 65±2%. Next, aluminum1 law of the long fence Ll of the start which can construct and lend 700-g weight, and can be Hang from(ed) and lent was carried out. 700-g weight is replaced with 2.5-g weight next, and it is offer 1~ about 1.2mg/denier of tension load. The magazine into which the constructed cold was put was dipped in water for 1.5 minutes next in Yoku by whom it was controlled by the temperature of 95 ±2-degreeC. It can lend, and the assembly thing of the /magazine was taken out from bathing next, was neglected, and was made to Dry smoke for 3~4 hours. Long fence L2 of the cold Crimp(ed) by 2.5 g of load was measured. Finally, 2.5-g weight was replaced with 700-g weight, and long fence L3 was measured. Crimp potential (CP) is calculated with (L3-L2) CP= /L2X100 per %. Number of crimp II (C3) is calculated with (Ll-L3) C3= /LIX100 per %. Lantern School■ "Relative viscosity" [ which is used here ] Becoming words and phrases are the ratios to flow time of solvent itself of flow time in a viscosity meter of polymer fluid containing 8.2±0.2 chief editor's % polymer. Let the solvent be 90% of the weight of formic acid here. Into formic acid 50mu, the measurement reported here uses 5.5 g of polymer, and is performed by 25 degreeC. Sentence statueJ This example illustrates the eccentricity sheath core filament and standard crimpability and Crimp recovery nature for collation of the present invention. A part for a Terpolymer time is manufactured by mixing Kisamachi range amine (HMD), isophthalic acid, and terephthalic acid to that of the quantity of the wish in water in the reaction vessel heated to the temperature of 50~70 degreeC. HMD or acid of the amount of additions is added as it is needed for reaching PH level of 7.6±0.3. Solution of hexamethylene isophthalamide (6■) and hexamethylphthalamide (6T) salt to generate is mixed with 1, next hexamethylene adipamide (6, 6) salt, and the Terpolymer ratio of a wish is provided. The anti-foaming agent, the anti-oxidization agent, and formic acid stabilizer of the amount of [ wish ] are added to the next. Salt solution is first moved into an evaporator and this thing is condensed there. The condensed solution is loaded into autoclave next, this thing is heated to 160degreeC there, and it goes that it is to pressure 250psig (17 or 6-kg/cm2 gauge). while maintaining fixed pressure -- temperature -- gradually -- up to about 247degreeC -- 1= -- it takes \4. low r Make pressure the last gradually to the atmospheric pressure of an enclosure, making it continue carrying out 1 Rise of the temperature to about 264~274degreeC. After holding the polymer to generate for 20 minutes in autoclave, extrusion molding is carried out under the pressure of inactive gas at the Strand system (strand), this is cooled rapidly with water, and then it cuts, and considers it as the shape (flake) of flakes. By 66 gay Borimer, and 66/6I / 6T Turpoli, a vacuum Exhaustion screw type extrusion molding machine (Vacuum exhausted screwextruder) is used, and - is fused separately. The relative viscosity (RV) of the fusion polymer sampled just before entering into the assembly thing of a silk-thread-spun cap is 52.6 in 66 polymer, and is 39.7 in Terpolymer. a separate measurement pump supplies two sorts of fusion things to a silk-thread-spun cap assembly thing by 287 degreeC at the speed adjusted so that the weight ratio which a sheath (66) and a core (Terpolymer) psi see might be provided. When it comes out of a silk-thread-spun cap, a filament is cooled rapidly with air and a conditioning is carried out with vapor. Finish is applied before winding up at 750 yards/m. The 52 degrees F (10, 5degreeC) air (cross-flowair) which intersects perpendicularly and flows is made to perform rapid cooling in a 60-inch (152 cm) (7) chimney. A water vapor conditioning is performed by letting yarn pass in the tube part between alcove slabs with a length of 80 inches (203 cm) which contains saturation water vapor by atmospheric pressure (interfloor tube). The spun yarn was allocated between the fountain roll (feed r'oll) on a commercial Drouzui star (d raw-twi st e r), and the extension roll (draw roll), On the draw pin (draw pin) which is not heated, it is further extended to the extension ratio (3, 24X) of a wish. The extended yarn is immediately put together using annular winding-up @ and (r i ngwindup) a traveller loop wheel machine (trave Ier wi ndup). In the 1st following table, 0 items l for which the sheath core ratio 42158 is used have composition 66/6I and / 6T. Weight % of each unit is 70/22.5/7.5 about items l. It knits to haberdashery by making yarn into Chinese milk vetch yarn (leg yarn), and they are 1 Beard and its Crimp index (crimp 1nde x). (CI) is measured to a fixation front and the back. CI and a Crimp rate of recovery (crimp r, ecove ry) are carried out as the following, and are measured: The yarn (about 400 deniers) l cold which has the circumference of abbreviation In is made by loosening upper Hayan of a wheel from under long Shoes. Cold is taken out from a wheel and it is made to loosen by extending slightly and hanging for 30 seconds next except for a paragraph shaped part (snag). 1.8-g weight is loaded on this cold for about 5 minutes, and that length is recorded (LR). This long fence LE that loaded 500-g weight next for the ability to lend, and was extended is recorded. A Crimp index (CI) is % unit and is LE-LR. CL= X 100E It is calculated by the becoming equation. Yarn should be loosened [ whether they are also long socks old for unworn long socks, 1.3, and five days, or ] in the 1st table. The Crimp rate of recovery which performs measurement immediately after fixation is in % unit. Crimp rate-of-recovery =CI 1.3 or 5 day CI (unworn) -- it is calculated by an equation. Milk-1=1 Moe 1 Yu (New) Before - wear 59.9 1 one-day wear 38.7 1 three-day wear 38.1 1 five-day wear 37.5 4 rough Village - 1 one-day wear 65 1 three-day wear 64 -5[1 wear A time 1 Good l Uniformity 64 As a standard [ for 1 Egg inspection ], it has a sheath core ratio of 42158, a sheath is nylon 6.6, and cores are 6 *6/6I. It is weight (70/30) %. Two ingredients of sheath core yarn which at least side was made in eccentricity is investigated about CI and a Crimp rate of recovery. For 1 minute and 10 minutes apply the sample of the yarn taken out from the finished long socks to the load of Ig/a denier. The measurements of length are performed to inside and the back before the period of load in the case. Although yarn thread is straight lengthened to measurement of the length (it loosened) to which load is not applied, tension is not applied in order to remove the Crimp. an equation and a result -- following passage: -- CI(before load) Lx-L. = X 100=67.5%Lx CI (after the load for 1 minute) L, -L. = --- X 100 = 29, 8%L. CI(after load for 10 minutes) L3-L. = = X 100 = 18 and 9% -- here -- the first relaxation length Lx='+7 Equal load length of Lo- Relaxation length A recommendation 10L cereals after removing the load for [ length L4 = l ] 0 minute at the time of the load maintained for relaxation length L 3= 10 minutes after removing the load for [ length L ] 2= 1 minute at the time of Ri and the load maintained for -1 minute - % After 1-minute load = it is jI for 1 minute! After C 110-minute load of what 1 and a q uni-44% load side = CI sentence Rapturel in front of i A time l To 1 load J Facial expression sigmaCI=28% load A tree example illustrates the importance and process performance of a sheath / core ratio by which a new two-ingredient filament is specified. Hexamethylene adipamide, hexamethylene isophthalamide, and some random 3 yuan copoly amide of hexamethylphthalamide middle rank, It examines as a core ingredient in the eccentricity sheath core filament which has poly (hexamethylene adipamide) as a sheath. It examines on the influence which it has on crimpability also about some sheath core ratios. ' in which a core meets the half side of a filament substantially, an eccentricity core is highly allocated in as shown in United States patent 4.069th and No. 363, and only a thin sheath encloses this by the side else - (qualitatively fabricated by the object for rice, or the form of ++D''' type.) The crimpability of a filament is measured from a point of Crimp potential (CP) and Crimp contraction (CS) after relaxation in Hot bath. A filament is spun and extended by the usual method using draw Twister― using various extension ratios. Yarn contains the filament of eight trees. 6 Kovoli amide A which uses six sorts of copoly amide constituents contains the hexamethylene adipamide / hexamethylene isophthalamide / hexamethylphthalamide unit of 70/15/15 Le lpsi%, respectively. Copoly amide B contains each 70/20/10 % of the weight unit. copoly amide C may contain 60/25/15 pile stitch% of each degree, and copoly amide D contains each unit of 70/22, 5/7, and the amount % of 5@. Copoly amide E contains each unit of 65 / 25/10-fold A %. Copoly amide F is 60/28.5/l 1. 5% of the weight of each unit is contained. The typical result chosen from many items is shown in the 2nd table. The best crimpability will be obtained if the filament containing sheath polymer below the amount % of 50 Tsui is used. Six items 9.12 and 18 by which items 6A and 6B are spun by 600ypm are spun by 800ypm. Items 2.4 and 6 are spun by 750ypm. All the items are extended by the extension ratio of 3.46 thru/or 3.609x within the limits. The unit of initial tensile stress denoted by g number per the growth/denier at the time of several g/destruction per denier reports Tenacity / growth / modulus (T/E/M), respectively. Items 2 and 4 are the things of the present invention within the limits. Dimensions~ O n1 : 2': ": : : ■ CO Dimensions Atmosphere 1 n r-''''==== of-country The Crimp characteristic that the textiles (items 2.4 and 6) of the present invention which has a sheath of % less than 50 have been improved is known easily. The performance at the time of draw rice Tapping (draw-twisting) of the yarn denoted by items 2.4 and 6 is dependent on the relative amount of the terephthalamide unit in Terpolymer. It is Show 17 It was about draw Twister- destruction of high A to the extent that items 2 do not show draw Twister- destruction, but items 4 show only the fine draw Twister- destruction which may be received marginally between the plant operations in actual L sentence conditions 5 and items 6 cannot be received.