GB2123861A - Autogenous bonding of nylon flbres activated by acid - Google Patents

Autogenous bonding of nylon flbres activated by acid Download PDF

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Publication number
GB2123861A
GB2123861A GB08220403A GB8220403A GB2123861A GB 2123861 A GB2123861 A GB 2123861A GB 08220403 A GB08220403 A GB 08220403A GB 8220403 A GB8220403 A GB 8220403A GB 2123861 A GB2123861 A GB 2123861A
Authority
GB
United Kingdom
Prior art keywords
fibre
web
nylon
homogeneous
artificial leather
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08220403A
Inventor
Tsai Yen-Ming
Yang Cheng-Lung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENG LUNG YANG
YEN MING TSAI
Original Assignee
CHENG LUNG YANG
YEN MING TSAI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHENG LUNG YANG, YEN MING TSAI filed Critical CHENG LUNG YANG
Priority to GB08220403A priority Critical patent/GB2123861A/en
Publication of GB2123861A publication Critical patent/GB2123861A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D04H1/485—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with weld-bonding
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate

Abstract

An artificial leather made of a mixture of fibrous materials including synthetic and natural fibres. The mixture of fibrous materials is further mixed with polymide fibre such as Nylon 6 or Nylon 66, beaten into a homogenous random fibre batt, combed by a carding machine, crossapped, punched with barbed needles, and then roll-pressed to become a fibre sheet, which is then dipped in an aqueous acid solution, rinsed with water and then dried to become a complete artificial leather. In an alternate process Nylon fibres are not added to the fibrous materials but are added to the acid solution to become a colloid solution. <IMAGE>

Description

SPECIFICATION Artificial leather and a process for manufacturing the same This invention relates to artificial leather and a process for manufacturing the same.
Commercial leather products available on the mar key can generally be divided into two categories, viz, animal leather products and artificial leather products.
Because of limited sourses, animal leather is extraordinarily expensive. In addition, under unfavour able weather conditions, such as high temperature and humidity, deformation and microbial deterioration can easily occur in animal leather products. As to conventional artificial leather products, they are relatively inexpensive, yetthey lack the advantages of animal leather products with respect to gas permeability, elasticity and fiexibility. In addition, both animal leather products and conventional artificial leather products lack resistance to acid, alkali and heat.
It is the main object of this invention to provide an artificial leather that has good gas permeability, elasticity, mechanical strength and resistance to chemicals.
ltisanotherobjectofthis invention to provide an artificial leather of low cost.
According to the present invention there is provided a processformaking artificial leather, comprising the steps of: Mixing syntheticfibre material containing 10 to 40 percent Nylon by weight; beating the mixed synthetic fibre materials into a homogeneous batt; combing said homogeneous batt into a plurality of fibre lines; crosslapping said fibre lines to form a web; punching said web with barbed needles; roll-pressing the punched web to form it into a fibre sheet; dipping said fibre sheet into aqueous sulphuric acid; neutralizing the dipped fibre sheet; rinsing the neutralized fibre sheet; and drying the rinsed fibre sheet.
,The invention also includes a processformaking artificial leather, comprising the steps of: mixing syntheticfibre materials excluding Nylon fibres into a homogeneous whole; beating the mixed fibre materials into a homogeneous batt; combing said homogeneous batt into a plurality of fibre lines; crosslapping said fibre lines to form a web; punching said web with barbed needles; dipping the punched web into a colloid solution of aqueous sulphuric acid and Nylon fibre material; roll-pressing the dipped web to become a fibre sheet; neutralizing the fibre sheet; rinsing the neutralized fibre sheet; and drying the rinsed fibre sheet.
Figure lisa flow diagram of a process in accordance with the invention; and Figure 2 is a flow diagram of an alternative process in accordance with the invention.
To manufacture an artificial leather a quantity of nonwoven fibrous material, which may be selected from such synthetic fibres as polyester, polyacrylic, polyacrylonitrile, polyvinylchloride and polyvinylalcohol, and such natural fibres as cotton, silk, wood and linen, is mixed with a suitable quantity of polyamide fibre such as Nylon 6 or Nylon 66. The mixture is then beaten to become a homogeneous random fibre batt, combed by a carding machine, crosslapped, punched with barbed needles, and then roll-pressedto become a fibre sheet. The fibre sheet is then dipped in an aqueous acid solution, rinsed with water and then dried to become a completed artificial leather.In the above described process the fibrous elementofthe mixture offibrous material and Nylon fibre is first intertangled in the needle punching operation to mechanically bone together, and then further adhered together after being dipped in the aqueous acid solution to form a microporous structure. Theformation of the microporous structure isthoughtto be such that Nylon fibres are resolved bytheacidandthe fibrous elements are adheredtogetheratthecrossov- er points by the resolved Nylon fibres, leaving the parts, otherthan the crossover points, substantially separate.
In an alternative method, Nylon fibres are not added to the fibrous materials but are added to the aqueous acid solution so that the Nylon fibres are pre-resolved in the solution to become a colloid solution. The fibrous material without Nylon fibres is beaten to become a homogeneous, random fibre batt, combed, crosslapped, punched and then dipped through the colloid solution to become a fibre web, which is then roll-pressed, neutralized, rinsed and dried to become a completed artificial leather.
Example 1 Afirst process is illustrated in Figure 1.
1 kg of a random mixture of fibrous material is mixed with 0.7 kg of Nylon fibres. The mixture should contain between 10 and 40% Nylon fibre by weight.
The mixedfibre material is then beaten with a batting machine into a homogeneous batt, combed with a carding machine into a line-shape, then crosslapped five or six layers to form a web. The web is then punched with barbed needlesto intertanglethe fibrous elements together. The needle punched web is then roll-pressed to become a fibre sheet, which is then dipped in a 10-35% aqueous sulphuric acid solution in a continuous processor approximately one minute, and then passed through a water or neutralizing bath of aqueous ammonia wherein the residual acid is neutralized or removed, a rinsing bath wherein thefibre sheet is further rinsed, and finally a dryerwherein the fibre sheet is dehydrated first and then heated to 50 degrees C until the fibre sheet is completely dry.
Example 2 1 kg of a random mixture of fibrous material excluding Nylon fibres is processed up to the needle The drawing(s) originally filed was/were informai and the print here reproduced is taken from a later filed formal copy.
punching step according to the process of Example 1.
The needle punched web is then dipped in a colloid solution ofthe mixture of 10-35% aqueous sulphuric acid and Nylon fibres in the ratio of 3:7 to 5:5 by weightfor approximately thirty seconds in a continuous process, then roll-pressed to squeeze out the excess colloid solution from the soaked web to become a fibre sheet. The fibre sheet is then passed through a neutralizing bath, a rinsing bath and a dryer as in Example 1 to become a completed artificial leather.
The process according to Example 1 produces a relatively soft artificial leather sheet and that according to Example 2 produces a relatively hard one. The softness or hardness of the product, however, can be varied as desired by adjusting the ratio of the Nylon fibres with respecttothe mixtureoffibrous material or by adjusting the duration time of dipping in the aqueous sulphuric acid or the colloid solution of aqueous acid and Nylon fibres. In any case, the microporous structure, or gas permeability of the completed artificial leather will not be greatly affected.

Claims (4)

1. A process for making artificial leather, comprising the steps of: mixing syntheticfibre material containing lotto 40 percent Nylon by weight; beating the mixed synthetic fibre materials into a homogeneous batt; combing said homogeneous batt into a plurality of fibre lines; crosslapping said fibre lines to form a web; punching said web with barbed needles; roll-pressing the punched web to form it into a fibre sheet; dipping said fibre sheet into an aqueous sulphuric acid; neutralizing the dipped fibre sheet; rinsing the neutralized fibre sheet; and drying the rinsed fibre sheet.
2. A process for making artificial leather, comprising the steps of: mixing synthetic fibre materials excluding Nylon fibres into a homogeneous whole; beating the mixed fibre materials into a homogeneous batt; combing said homogeneous batt into a plurality of fibre lines; crosslapping said fibre lines to form a web; punching said web with barbed needles; dipping the punched web into a colloid solution of aqueous sulphuric acid and Nylon fibre material; roll-pressing the dipped web to become a fibre sheet; neutralizing the fibre sheet; rinsing the neutralized fibre sheet.
3. A process for making artificial leather substantially as herein described with reference to either of the Examples herein.
4. An artificial leathersheet produced according to the process of any one of the preceding claims.
GB08220403A 1982-07-14 1982-07-14 Autogenous bonding of nylon flbres activated by acid Withdrawn GB2123861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08220403A GB2123861A (en) 1982-07-14 1982-07-14 Autogenous bonding of nylon flbres activated by acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08220403A GB2123861A (en) 1982-07-14 1982-07-14 Autogenous bonding of nylon flbres activated by acid

Publications (1)

Publication Number Publication Date
GB2123861A true GB2123861A (en) 1984-02-08

Family

ID=10531662

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08220403A Withdrawn GB2123861A (en) 1982-07-14 1982-07-14 Autogenous bonding of nylon flbres activated by acid

Country Status (1)

Country Link
GB (1) GB2123861A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1073183A (en) * 1963-02-05 1967-06-21 Ici Ltd Leather-like materials
GB1248232A (en) * 1966-02-16 1971-09-29 Monsanto Co Improvements in and relating to the bonding of polyamides and polyurethanes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1073183A (en) * 1963-02-05 1967-06-21 Ici Ltd Leather-like materials
GB1248232A (en) * 1966-02-16 1971-09-29 Monsanto Co Improvements in and relating to the bonding of polyamides and polyurethanes

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