JPH0362815B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to fabrics for bags, and particularly to fabrics for bags suitable for sports bags, Boston bags, lesson bags, school bags, etc. Conventionally, fabrics made of polyamide filament flat yarns have been mainly used as fabrics for bags. However, although such woven fabrics are satisfactory in terms of strength, they not only have disadvantages such as having a slimy feel and luster peculiar to filament yarns, the tendency for threads to slip together, and poor workability, but also a feeling of bulkiness. It has disadvantages such as lack of strength (thinness). The present inventors have arrived at the present invention as a result of intensive research in order to provide fabric for bags that does not have the above-mentioned drawbacks. In other words, the crimp rate in one or both of the warp and weft directions is 15% or more, and the hot water crimp fastness is 10.
This fabric for bags is characterized in that it is made of a fabric woven using synthetic polyamide filament yarn processed by an air jet method with a fineness of 300 to 1,500 deniers, which has a fineness of 300 to 1,500 deniers. Due to the use of filament-processed yarn, the fabric according to the present invention does not have the disadvantages of sliminess and slippage characteristic of flat yarns, has a spun-like texture, is bulky, and has excellent processability, color development, etc. The synthetic polyamide filament yarn used in the present invention includes nylon 6, nylon 6,
Polyamide filament textured yarn such as No. 6, filament textured yarn consisting mainly of these structural units and other copolymerizable components, and polyamide filament textured yarn consisting of blends or composites of these polymers can also be used. The method for producing processed yarn is the air jet method, and hot air jet processed yarn,
This method is most suitable for obtaining thick denier processed yarn suitable for bags, and the fabric using this processed yarn has bulkiness and dimensions. It has excellent stability and workability. In the case of ordinary false twisting, processing of thick denier is not as easy as in the air jet method, and the fabric obtained from the false twisted yarn is inferior in bulk and dimensional stability. The fineness of processed yarn is usually 300 to 1500 denier.
Preferably it is 500 to 1000 deniers. Moreover, it is preferable that the strength is 2 g/d or more. The denier of single yarn is usually preferably about 8 to 15 denier. If the fineness is less than 300 denier, the physical properties as a fabric for bags will be insufficient, while if it exceeds 1,500 denier, there will be defects such as impairing sewing properties, flexibility, appearance, etc. The cross-sectional shape of the filament may be either round or irregularly shaped, but preferably triangular. The processed yarn used preferably has a crimp rate of 15% or more and a hot water crimp fastness of 10% or more, and more preferably a crimp rate of 18% or more and a hot water crimp fastness of 13% or more. is particularly preferred. Also, the shrinkage rate of boiling water is
It is 12% or more, preferably 8% or less. A processed yarn that satisfies the above physical property values has particularly excellent workability, spun-like texture, bulkiness, and excellent dimensional stability. In the present invention, such processed yarns are used for either one or both of the warp and weft to weave fabrics such as plain weave, dobby pattern, and jiyaguard pattern. Further, a part of the processed yarn may be replaced with a flat yarn within a range that does not impair the gist of the present invention.
Furthermore, a combination of a filament-processed yarn made of a regular polymer and a cationically dyeable flat yarn, or a combination of a filament-processed yarn made of a regular polymer and a cationically dyeable flat yarn, a combination of a filament-processed yarn made of a regular polymer and a cationically dyeable filament-processed yarn, and a combination of a filament-processed yarn made of a regular polymer and a cationically dyeable flat yarn. It is also possible to dye different colors by combining with polyester filament processed yarn or by combining three or more types. Furthermore, by using at least a portion of the cationic dyeable polyamide filament, the durability of water repellency and/or waterproofing is further improved. The fabric thus obtained is treated to be water repellent and/or waterproof to obtain fabric for bags, and if desired, it is colored by dyeing or printing. Dyeing is usually carried out before water-repellent and/or waterproofing. It is usually preferable to apply water repellent treatment after waterproofing. Water repellent finishing can be done by using a water repellent such as organopolysiloxane, fluorine water and oil repellent, stearylamide methylpyridinium chloride, octadecyl ethylene urea, etc. alone or in combination of two or more, or if desired, by adding N- to the water repellent. This is carried out by adding a methylol compound, a reactive acrylic polymer, etc. Particularly preferred are water and oil repellent finishing agents containing perfluoroalkyl groups. This processing can significantly improve water repellency and durability due to the synergistic effect of improved bulk and processability due to the use of processed yarn. It goes without saying that an antistatic agent, stain removability improver, etc. can be added to the processing agent as desired. The present invention will be explained below with reference to Examples, but the present invention is not limited to the Examples. In addition, various tests in the examples were based on the following measurement methods. (1) Slip strength JIS L1096.6.21.3. Pin hook method (2) Crimp development rate (%) 100℃ for polyester filament processed yarn
×5 minutes, 60 minutes for polyamide filament processed yarn
C. for 20 minutes under no load, take out the sample from the hot water, apply a load of 0.2 g/d while it is still wet, and measure the length (Acm). Then, the weight was removed and the material was dried for 30 minutes at 60° C. under no load. After conditioning in a standard atmosphere, an initial load of 0.002 g/d was applied and the length was measured 1 minute later (Bcm). Crimp development rate (%) = A-B/A x 100 (3) Hot water crimp fastness (%) When a weight of 0.005 g/d is applied to the comb-like processed yarn, the polyester filament processed yarn
Treated with hot water at 100℃ for 15 minutes, and for polyamide filament processed yarn at 60℃ for 20 minutes, removed from the hot water and applied a load of 0.2g/d while still wet.
Measure the length after 30 seconds (Acm). Then, it was dried at 60℃ for 30 minutes under no load, and after conditioning in a standard atmosphere,
Apply an initial load of 0.002 g/d and measure the length after 30 seconds (Bcm). Hot water crimp development rate (%) = AB/A x 100 (4) Hot water shrinkage rate (%) Apply an initial load of 0.1 g/d and measure the length after 30 seconds (A cm). Next, an initial load of 0.1 g/d was applied, and the polyester filament yarn was treated with hot water at 100℃ for 20 minutes, and the polyamide filament yarn was treated with hot water at 60℃ for 20 minutes. Apply a load and measure the length after 30 seconds (B
cm). Hot water shrinkage rate (%) = A-B/A x 100 (5) Waterproofness - Water repellency L-1092 Method A Water resistance m/m Spray method water repellency example 1 By nylon 6 air jet method (Taslan processing) Processed yarn: 500d/64f, number of additional twists: 60T/m,
Strength 2.5g/d, elongation 45%, crimp rate 21.1%,
Hot water crimp fastness 15.0%, hot water shrinkage rate 4.5%, using triangular cross-sectional shapes as warp and weft, finished width 102 cm by water jet loom loom,
A plain weave with a finishing density of 52 warps/inch and 32 wefts/inch was woven. The obtained woven fabric was scoured at 80°C, and then jitzger dyed at 100°C for 40 minutes using an acid dye. Next, 15 g/m ³ of acrylic ester resin was applied using a floating knife coater for waterproofing, and then padded with a 1% solution of fluorine water and oil repellent (squeezing ratio: 80%) and dried (120°C for 1 minute). , heat treated (130°C for 30 seconds). The performance of the obtained treated fabric was compared with that of a conventional product using flat yarn, and is shown in Table 1.

【table】

[Table] As a result, the product of the present invention has the slip characteristic of long fibers,
The fabric was not slimy, had a spun-like, voluminous texture, had excellent dimensional stability, and was highly waterproof and water repellent. In addition, when the present invention product and the conventional product were washed in a home washing machine,
The water repellency and prevention properties of the product of the present invention hardly deteriorate,
Although durability was observed, the conventional product showed a significant decrease in water repellency and water resistance. Example 2 Nylon 6 filament flat yarn,
420d/48f warp yarn, filament processed yarn using cationic dyeable nylon 6 hot air jet method, 1000d/64f, strength 2.6g/d, elongation
48%, crimp rate 23%, hot water crimp fastness 15%, hot water shrinkage rate 6.5%, using a triangular cross-sectional shape as the warp and weft, finished width 102 cm by water jet loom loom, A plain weave with a finishing density of 52 warps/inch and 27 wefts/inch was woven. The obtained woven fabric was scoured at 80°C, and then dyed in one bath boil for 40 minutes using an acid dye and a cationic dye. Next, it was subjected to waterproofing and water repellent finishing in the same manner as in Example 1. As a result, the result is a spun-like, voluminous texture with no slip or slimy feel, excellent dimensional stability, waterproofness, and water repellency.Furthermore, cross-dining allows for different color dyeing, dark and light dyeing, and a pre-dyed look. A fabric with the appearance was obtained.

Claims (1)

[Claims] 1 Woven using air-jet processed yarn of synthetic polyamide filament with a fineness of 300 to 1,500 deniers, which has a crimp rate of 15% or more and a hot water crimp fastness of 10% or more, in either or both warp and weft directions. A bag fabric characterized by being made from a woven fabric treated with water-repellent or waterproof treatment.