TWI259222B - A method for manufacturing synthetic (artificial) leather from non-woven fabric - Google Patents

Abstract

The present invention relates to a method for adding potential capacities of elasticity and cushioning property to a non-woven fabric used in manufacturing synthetic leather and artificial leather and non-woven fabric synthetic leather and artificial leather which are manufactured using the non-woven fabric, thereby expressing superior elasticity and cushioning property. A non-woven fabric for synthetic leather and artificial leather according to the present invention is manufactured by mixing 5 to 60 wt.% of a water soluble polyvinyl alcohol fiber with a synthetic fiber in the temperature range of 5 to 95 DEG C, wherein elasticity or cushioning property is selectively expressed from the synthetic leather and artificial leather by manufacturing synthetic leather and artificial leather using the non-woven fabric after passing the non-woven fabric through appropriate post-treatment processing. Non-woven fabric synthetic leather and artificial leather having more superior elasticity or cushioning property are manufactured according to the present invention.

Description

V. DESCRIPTION OF THE INVENTION (1) ^"--Multiple [Technical Fields of the Invention] ^ The present invention relates to a method for producing a synthetic leather σ, and a woven artificial leather using the above-mentioned spear artificial leather . particular::! : Made of non-fibrous; non-woven fabrics to increase the potential elasticity for synthetic leather and ^ also involves the use of the non-woven fabrics produced by the crepe and cushioning properties of the fabrics to make them exhibit superior elasticity = leather and artificial ^ Know the technology] 绫 性质 nature. Backflush is therefore usually a synthetic leather and man-made similar property. In addition, the synthetic leather two out and the natural grain leather leather are not superior to the '/· raw and special = leather * through the addition of days of missing leather alternative materials. It is often used as a natural grain, using fabrics, not always; ^ a ” fat impregnated or coated to produce quality, through the use of polyurethane A for the production of high quality; to:: artificial leather,;;: ;= The most similar characteristics of the surface 2:, quasi-',, ° structure' can therefore show the general non-woven synthetic, leather similar rigidity and ductility, y: artificial leather performance and day defects ^ in terms of buffer properties There are also limitations: too...the characteristics of the meaning, and the synthesis: by:::ί t No. 199 δ - 018061 discloses that the force of the non-woven fabric with π having a plate orientation is obtained by the following method, ... Sheath year 1259222

V. Description of the invention (2) Sheath-core filament to the melting point temperature of the sheath component or below, after the textile concentric sheath core fiber, hot-drawn and heat-heated sheath core fiber in the width direction, And they are accumulated, and the aforementioned concentric sheath core is composed of a poly-g core component and a polyolefin sheath component. However, there are also some problems. Although this non-woven fabric can be used as a PAP material and a medical hygienic material due to its superior lateral elasticity, it is difficult to use the nonwoven fabric as a synthetic leather and artificial leather material due to its weak breaking strength. Further, the Korean Patent Publication No. 1 9 9 9-076〇34 discloses a method of increasing the elasticity of artificial leather using the elastic modification of the sea-island type composite fiber to produce artificial leather. The sea component in the island-type composite fiber is composed of a salt-soluble copolymer polyester, and the island component is composed of polytrimethylene terephthalate. Compared with the artificial leather produced by the island-type composite fiber in which the existing island component is polyamide or polyester, the artificial leather produced by the island 1 and the enamel fiber is used because of the superior elasticity of the island component of the fiber. When the elongation is 10%, it shows a complete elongation recovery, thus showing a relatively superior = sex. However, its elasticity is still unsatisfactory. In addition, there is also a technology that has been introduced, in which 'the resulting leather's bullets = pass through, and the enemies are improved. The enemy shrinkage is due to the elastic non-woven fabric and the short or filament non-woven fabric between the production crepe and the leather. Subsequent X: ί ί 勺 ' These non-woven fabrics have potential shrinkage by inserting and bonding elastic ammonia enamel braids, knits or woven fabrics during the production of non-woven fabrics. However, there are some problems with this technology. 2 In the case of elastic non-woven fabrics in which the knitted fabric is broken or bonded, the heavier the cloth, the greater the resistance to the elasticity, and the insufficient adhesion.

Page 8—91122RB7 V. Inventive Note (3) Time Correction 曰-- \r^_, the non-woven fabric and the knitted fabric are produced by the fiber of the ^^ and the elastic ray produced by the #π Buffer & $ ^ uses a weak fracture strength with potential shrinkage properties to allow the coexistence to have a lot of beaded into leather that cannot be negated because of the fiber side, with sufficient strength for cushioning. Material or filling material, it: and the fiber in the bulk of the non-woven fabric * and *, 'adhesive fiber or adhesive buffering properties, this is not::, therefore, due to bulkiness = : material' Because their strength is used as a synthetic leather and artificial leather, the composite non-woven fabric is used: not only at the same time, it can be utilized _ = generally non-woven on top of the substrate, and the 3 mesh is laid on the synthetic leather and artificial leather on the substrate. Some of the properties are a technique for the use of knitted fabrics, as a substrate. However, the 2 buffering property, the use of the arrangement is due to the fact that in the case of the composite non-woven fabric, there are some problems, such as f flattening badly, and the strength for the quality of the non-woven i1:::knitted fabric is weakened, so Reinforced, i punched u and clever leather physical shoes, clothes and various items = sex shell, in the actual production of general synthetic leather with cushioning properties and human / skin / sponge bonded to no [technical content of the present invention] In leather. In order to solve the prior art described above, the aim is to provide a kind of potentially slow:: Jay's invention has superior elasticity and cushioning properties::: Weaving 'Life': Another purpose of the invention is Provides treatment without leather. The potential elastic properties and cushioning properties are selected as follows::::: so that another 本 of the present invention is expressed from 匕+... The trick is to provide superior performance of elasticity or cushioning. Page 9 1259222 Revision 曰 91122667 V. Invention Description (4) ----_ _ Nature of non-woven leather and artificial leather, they are obtained by the above method Will be 5% V6. '/ Now two of the two, through at 5. . To 95. . In the temperature range of mixing, the production of water-soluble polyvinyl alcohol fiber and synthetic fiber in the day of the private day is better: Manzhi: non-woven fabric of synthetic leather and artificial leather. The fineness i of the vinyl alcohol fiber is 3 denier or less, and the water-soluble poly is manufactured: US: used for the non-woven fabric of leather and artificial leather, (4) to 60% [heavy/sudden Through the temperature range of 5 ° C to the price of the temperature; the production of non-woven bristle half] heat sink and shrink non-woven half: 匕 through the non-woven semi-finished products into the polyvinyl alcohol fiber in the water pool temperature in the water soluble and love The shrinkage of the non-woven fabric is f = f in the range of 60% to 95%; the degree 'where, the + weaving is half zh. The surface is at 100 °C to 18. . . , the heat-shrinkable synthetic fiber is preferably added by 5% to coffee (weight Γ in addition, according to the manufacturing method of the woven fabric of the present invention, the system comprises, in two, synthetic leather and artificial leather, the temperature range will be 5% to 6% [Heavy Diffuse Steps··~ Produce non-woven Bribs through the mixing of synthetic fibers from 5t to 95t,: ·Bathing polyglycol fiber and ^: (2) Spray steam force is 2kg/9^ to: A non-woven semi-finished product that is not woven, and has a dry surface at a temperature of /C to 1 30^. . To 18 (^:: shrinking non-woven semi-finished table, 1 woven fabric semi-finished product is best passed through 1259222 V. Invention description (5) Adding 5% to 15% [weight] Excellent elasticity or leather, produced by the following method Non-woven fabric, then the polyvinyl alcohol fiber, the pre-water dissolution temperature or higher [the best practice of the present invention will pass through the optimum capacity. The present invention features a non-woven fabric in leather, which is mixed with leather and fibers in general fibers. Artificial leather is not a method of selective expression of cloth as a substrate to obtain leather and artificial leather. First, in the production of different fiber blends, to make synthetic properties. The synthetic dimension used here, such as general polyamide The finest finer synthetic fibers used in the elution of island-in-the-sea composites are corrected using synthetic fibers with 122667

Produced by heat shrinkable synthetic fibers. Buffering properties; ^ Zhong female production:::: synthetic leather and artificial leather work non-woven fabric immersed in the water, Xuan, +, ^ in the liquid to remove, / / / liquid temperature is poly The vinylidene fiber is only worn, and then the nonwoven fabric is dried. The embodiment of the present invention describes in detail the specificity of the present invention, in order to provide a water-soluble 4::: fiber web for use in the production of synthetic leather and non-woven fabrics; After relying on the treatment and right, 乂, and using the non-woven 〃 〃 〃 〃 t t t = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = All types of fiber ς = short fibers or filaments, separable or soluble woven silk, natural fibers, etc. In addition, the degree is preferably 旦 3 denier or less because of the synthetic leather and artificial leather produced by the fiber. of

Page 11 1259222 ------- nickname 9112 Coffee 7 - 5, invention description (6) The closer the quality is to natural grain leather. The fineness of the dimension and dimension is preferably from   to 4 denier, of which the staple fiber is still cushioning. In addition, Depending on the properties to be expressed, it is elastic. Polyether in water: C: used as a hot polyvinyl alcohol fiber in the temperature range of 5 C to 95 C. The choice of 3 is maximized in the present invention. For example, the temperature of the water bath can be such that the desired characteristics of the enol fiber phase 5, and the use of the fineness and high water-soluble temperature of the polyethanol fiber, f, the use of thick and low water temperature polyethylene The current characteristics 2 superior buffer properties. At this time, consider the operability and amount of the poly-process used in the table, and the characteristics are 5% to 6〇% [re-adjustment. The circumference can also be based on the amount of polyvinyl alcohol fiber. = dimension and ordinary fiber to spread the mesh or non-woven fabric inside the glue ^ SPUn_^Ce / ethod ) through the excessive bonding condition in the fiber can not * = obtain the non-woven semi-finished products, the degree of fiber breakage, and make:: two soil them The degree of polyethylene condensation is deepened' and thus the elastic or buffered two gauges: the structure has a high density and the proper treatment is not woven = now has a bad influence. Semi-finished products exhibit elasticity or cushioning that can be given to non-woven fabrics, that is, the potential for different, sexual potential. + Cheng. ...to the hot water and shrink into the 12th page 1259222

Page 13 Case No. 91122667 1259222

V. INSTRUCTION OF THE INVENTION (8) _ That is, it is preferable to shrink the non-woven fabric by spraying the vapor pressure d "steam" to the non-woven fabric without any direction during the steam shrinkage, and then the temperature is 1 〇〇 & = 6 kg / ^ Dry the two surfaces of the non-woven fabric. In addition, between the non-woven '30 C heat', in the same way as in the hot water shrinking process, add 5% to 15% by weight of the heat shrinkable synthetic fiber. The past is not: the uniformity and maximization of the semi-finished fabric, and the use of the U-receiving is the best, because the steam-contracted non-woven synthetic fiber has an increased bulkiness. Instead of using a polyaminophthalate to impregnate a prostitute, a non-woven fabric, a synthetic leather and an artificial 2 coating, the leather and artificial leather of the present invention have an immersion temperature equal to or higher than 5 =: heat through the synthetic skin In the aqueous solution, the synthetic leather in the water-soluble temperature solution of the polyether is removed, and the synthetic leather in the water-soluble temperature solution of the enol fiber and the human, the raw material, the alcohol, and the dried and immersed in the hot-water-dissolved artificial leather ί artificial leather to obtain *woven fabric synthesis Leather and non-woven, = non-woven Cloth synthetic leather and artificial leather skillful fluidity read W7 八有, ', mouth structure mobile machine twins through the transmission of polyvinyl alcohol fiber and the superior flexibility of the current A field * have two increased *'. The invention is not limited to the scope of the present invention, and the following examples are intended to describe the invention in detail. They are only [Example 1] "The general production method of Kang non-woven fabric, through the 5 [weight] 1259222 case 91丨22667 r, no Όα ο,, gas 7Γ ν Ο, / general solvent elution island-type dissolved poly The fluff of vinyl short fiber, in which the length of Haiwei is 51 mm, and the length of poly is 3 8 mm, and then the condition of 1 cm circle of 1 cm circle, and the composite salty property of island type is obtained. The reduced non-woven semi-finished product for synthetic leather per unit area weight is immersed in warm seconds and the non-woven fabric is semi-finished, and the dried non-woven fabric contains about 20% [weight] product about 27〇g/m, j29〇g / Get: with 10% tree The non-woven fabric of t obtained by the above method is immersed in the sea-island composite fiber while extracting 肀7 π | vinyl alcohol fiber [Case 2] except that 40% of the modified composite short fiber is combined with 50% by weight of gq. . The fineness of the fiber mixture and the mixed island type composite short fiber which is mixed with water is 3-5 denier, and the fineness of the vinyl vinyl short fiber is 1.5 dan, and the fiber permeation is in the total needle density (ppsc). About 5 pairs of mixed ^ ^ net and paper _ per acupuncture and have about 24 0g / Gu Ij 2 5 0g / #, the amount of non-woven ridge ',,, and short fibers, which use about 30% [ The weight is divided into raw materials. From about 590g/m2 to 61 〇g/m2 and a thickness of about 丨· 〇 leg Weaving is produced by the following method: 5 seconds from the hot water tank of 7 4 °C to 7 6 °C! 〇 Products, extrusion and drying shrinkage of non-woven semi-finished fabrics. The final polyaminophthalate resin and the suede synthetic leather having a weight per unit area of m2 are impregnated with a non-woven fabric of a polyurethane-containing polyaminophthalate resin by the following method, and the non-woven fabric after solidification impregnation is solidified into 9 0 C to 9 5 C in a thief solution to dissolve sea components to superfine and dissolve the fibers, and to dry, polish and polish the fiber surface. Ordinary nylon staple fiber 1259222 with a fineness of 2 deniers __ Case No. 91922RR7 曰 Amendment 5, invention description (10) dimension, 10% [weight] fineness is 丨.4 denier polyester staple fiber, and 5〇% [weight '' and a fiber length of 51_, a length of 38 mm, 40 ° C water-soluble poly 2, 细 fineness of 1.5 dan and fiber example 1 the same method, obtained with J ^ . . In addition to the alcohol fiber blend, a non-woven semi-finished product with a weight of 280 g/m2 was used. The non-woven fabric U g/ m2 for the synthetic leather and the non-woven semi-finished product obtained for the synthetic leather with a weight per unit area of 270 g / m2 to a weight of about 3 〇〇g/nf 1 Jmm per unit area are produced by steaming as follows: Under the conditions, there is about Skg/nf steaming; the air flow is set to 'the device is at zero tension, and then the surface temperature is 14〇1: to ^. The second shrinkage non-woven fabric is semi-finished. ϋ c roll ironing shrinks dare, winter contains about 20% [weight] 嘹 per unit area about UOg / ni to 23Gg / nf ^ f formic acid S resin and has a stained state of synthetic leather semi-finished products through the following people The thickness of the immersed solids containing gold is obtained by the I m A method. The non-woven fabric produced by impregnation with 10% dendritic A diterpene: formic acid resin is solid 95. =: The cured non-woven fabric is immersed at a temperature of 9. . . Into the furnace's 1' liquid mixture, the polyvinyl alcohol fiber is dissolved and extracted, and the fiber is dried by a known method. [Comparative Example 1]

In the same manner as in Example i, using an island-in-the-sea composite short fiber which is the same as the general solvent eluted with 丨〇〇% [wt] and == Example 1, a unit area of about 30 〇g/Π is obtained. Non-woven semi-finished product having a weight of 310 g/rri and having a denier of 3.5 denier and a length of mm fiber. The thickness of the unit is about 310g / m2 to 330g / m2 and about 1. 3_ thickness

Page 16 1259222 Case No. 9Π22667 Description of Invention (11) _η 曰 Non-woven fabric for artificial leather is produced by the following method: Non-woven semi-finished product is immersed in a liquid solution at a temperature of about 741 to 76, and 5/〇 [heavy] polyvinyl alcohol 5 seconds in the hot water bath of the resin to mask and dry the dipped fabric, after which the dried " = : = over the roll to iron the surface. The cloth + through the mouth was passed through the same method as in Example 1. For artificial leather: obtained, containing about 2% by weight of polyamido § kiss " 并 s with a maternal early area of about 2 70g / m2 to 2 90g / nf weight of suede 1 [Comparative Example 2] 仏 反 半. By the same needle punching and steam drying method as in Example 2, mixing 90 〇 / 〇 [weight] fineness of 2 denier and fiber length of 51 with ordinary staple fiber and 1 〇 % [Weight] of shrinkage polyester staple fiber having a fineness of 丨·4 denier and a fiber length of 51 Å, which is obtained for synthesis having a weight of about 26 〇 to 280 g/ni per unit area and a thickness of about 丨·6 mm. Non-woven fabric of leather. By using a polyaminophthalate tree containing 10% resin solids. The non-woven fabric for synthetic leather produced by impregnation, the impregnated non-woven fabric is cured, and the cured non-woven fabric is dried by a general method to obtain a polyaminophthalic acid resin which finally contains about 2% by weight and has about 3 per unit area. 2 immersed synthetic leather semi-finished product having a weight of 〇g / m2 to 340 g / m2 and a thickness of about 1.5 mm. Measured according to Examples and Comparative Examples by ASTM (American Standard for Testing and Materials) The non-woven fabrics produced, as well as the physical properties of synthetic leather and artificial leather semi-finished products, such as tensile strength, elongation and tear strength. The elongation recovery rate is measured by the following method. The elasticity, cushioning properties, and elongation are measured by the sensation method.

Page 17 Case No. 91] 22ftfi7 1259222

V. Description of invention (12) Sex, resilience, etc. The properties of non-woven fabrics are listed in the table, and the properties of human artificial leather are listed in Table 2. The measurement of the enthalpy and elongation recovery rate is carried out by a method comprising the following steps: eight test pieces of 5 cm width are taken, and the length of the test piece is parallel to the width and width direction of the non-woven fabric; After the rate extension ^ = on the tester, each test piece was stretched at an elongation rate of 10 cm/min through the length of the test piece on the collected test piece, and the elongation was 50% and 100% respectively. When the elongation is stopped, the = separate door 'and then the test piece is removed from the &tester; the distance between the test positions on each piece is measured (1)), and the tensile force of the test piece is removed after the elongation In the state, the test piece is enough to be left alone; finally, by calculating the distance measured in the face formula, each elongation recovery rate is calculated and the algebraic average value is recorded. Elongation recovery rate: When the elongation of the table is [(Lxl.5—LlW(Lxl.5—L)]xl〇〇% elongation, [(L x 2 — L 1 ) eight L x 2 — L )]x 1 0 0 Nature of non-woven fabric

Hybrid 1 Intersection 1 Hybrid 2 303 325 (10) Intersection 2 271_ Intersection 1 Example 2 Hybrid 1 1.69 1.27 (mm) 1.52 0.179 0.256 (g/cm) 0.406 45.2 36.3 New direction 35.7 44.3 30.5 Width direction 29.7 tb ♦Example 2 1.57 0.173 41· 5 -—-—— 44.9 Thickness of rabbit density—one tensile strength ^吋) 1259222 Case No. 91122667 One-year monthly correction, invention description (13) Elongation direction 92.0 80.7 77.8 98.3 (%) tA direction 180.1 100.3 127.4 115.7 tear strength direction 14.8 16.4 12Γ6 16.2 (Kg) direction direction 13.2 12.7 15.5 Table 2] Properties of synthetic leather and artificial leather tb♦ Example 1 Case 2 284 225 282 327 Category Weight (g/m2) Thickness (mm) 0.93 Apparent density (g/cm3) 0. 305 Tensile strength length direction 34.3 1.53 25.2 (Kg/gnj^ 0.86 1.60 07328^- 0.204 (Kg) Length width direction ^ · X i I \J · \J LJ V-/ \J · LmJ \J gjT3^36T4~~52.4 50. 5— 32?/ 32.7 ~4^7~

1259222 Case No. 91122667

Page 21

Claims (1)

1259222 VI. Patent application scope 1. A method for manufacturing non-woven synthetic (artificial) leather, comprising the following steps: A. dissolving 5% to 60% by weight of water in a temperature range of 5 ° C to 9 5 t: Polyvinyl alcohol fiber is mixed with synthetic fiber to produce a non-woven semi-finished product selected from polyamine, polyester staple fiber or silk, island-separated composite staple fiber and silk which can be separated or solvent-elutable, natural fiber; B. immersing the non-woven semi-finished product in a hot water tank to shrink the non-woven semi-finished product, wherein the temperature of the hot water pool is set within a range of 60% to 95% of the decomposition temperature of the water-soluble polyvinyl alcohol fiber; C. ironing The surface of the non-woven semi-finished product has been shrunk to a temperature range of 1000 ° C to 18 (TC); D. The non-woven fabric processed in the above step is then immersed in heat at a temperature of 74 ° C to 76 ° C Removing the polyethylene fiber in an aqueous solution for 5 to 10 seconds, the temperature of the hot aqueous solution being equal to or greater than the water dissolution temperature of the polyvinyl alcohol fiber; and E. drying the non-woven fabric from which the polyvinyl alcohol fiber is removed A non-woven leather is produced. 2. A method for manufacturing non-woven synthetic (artificial) leather, comprising the following steps Step: A. mixing 5% to 60% by weight of water-soluble polyvinyl alcohol fibers with synthetic fibers in a temperature range of 5 ° C to 95 ° C to produce a non-woven semi-finished product selected from the group consisting of poly Indole, polyester staple fiber or silk, island-type composite staple fiber and silk, natural fiber which are separable or solvent-elutable Page 22 1259222 VI. Application for patents 圏 — TM ———. Dimensions; B. The surface of the non-woven semi-finished product is sprayed with steam at a pressure between 2kg/cm and 6 kg /cm. If the non-woven semi-finished product is shrunk, Drying the shrinkable nonwoven semi-finished product at a temperature of from 100 ° C to 130 ° C; C. ironing the surface of the shrinkable non-woven semi-finished product to a temperature range of from 1000 ° C to 180 ° C And then removing the polyvinyl alcohol fiber by immersing the non-woven fabric processed in the above step in a hot aqueous solution, the temperature of the hot aqueous solution being equal to or greater than the water dissolution temperature of the polyvinyl alcohol fiber; E. Drying a non-woven fabric from which polyvinyl alcohol fibers are removed to obtain a non-woven fabric. Page 23