KR20170078298A - Composite sheet for synthetic leather - Google Patents

Composite sheet for synthetic leather Download PDF

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Publication number
KR20170078298A
KR20170078298A KR1020150188668A KR20150188668A KR20170078298A KR 20170078298 A KR20170078298 A KR 20170078298A KR 1020150188668 A KR1020150188668 A KR 1020150188668A KR 20150188668 A KR20150188668 A KR 20150188668A KR 20170078298 A KR20170078298 A KR 20170078298A
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KR
South Korea
Prior art keywords
synthetic leather
composite sheet
film layer
melt film
hot melt
Prior art date
Application number
KR1020150188668A
Other languages
Korean (ko)
Inventor
장지상
이재정
최경석
Original Assignee
(주)아셈스
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 (주)아셈스 filed Critical (주)아셈스
Priority to KR1020150188668A priority Critical patent/KR20170078298A/en
Publication of KR20170078298A publication Critical patent/KR20170078298A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2375/00—Polyureas; Polyurethanes
    • 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
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/1685—Wear resistance
    • 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
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The present invention relates to a composite sheet for a synthetic leather, and more particularly, to a composite sheet for a synthetic leather which is capable of exhibiting a leather feeling by a simple process in which the synthetic leather is placed on an upper surface of a base fabric, So that it is possible to improve the productivity of the synthetic leather such that various and beautiful patterns and patterns can be easily formed on the synthetic leather. In addition, the composite sheet for synthetic leather A first hot melt film layer is formed on the upper surface of the non-woven type raw monolayer, a second hot melt film layer is formed on the lower surface of the first hot melt film layer, and a coating layer made of a TPU film Thereby improving the adhesion to the base fabric and achieving an appropriate level of flexibility as a whole Also, the nonwoven fabric type monolayer can be expressed in a variety of patterns, patterns and colors, so that it can be applied to a wider range of designs and products. Further, since the coating layer realizes a coating effect on the monolayer, The present invention relates to a composite sheet for synthetic leather, which can enhance durability and further enhance the beauty of design, thereby realizing a high-quality product.

Description

{Composite Sheet for Synthetic Leather}

The present invention relates to a composite sheet for a synthetic leather, and more particularly, to a composite sheet for a synthetic leather which is capable of exhibiting a leather feel through a simple process in which the synthetic leather is placed on the upper surface of a base fabric and then pressed.

In general, natural leather is widely used in products such as shoes, bags, wallets, pouches, sofas, and clothing, but its resources are limited and not enough to meet demand, The supply and demand is gradually decreasing.

Therefore, synthetic leather having various patterns on its surface has been widely used as a substitute product thereof. Specifically, the synthetic leather is produced by preparing a nonwoven fabric using mixed fibers made of nylon-polystyrene (PS), polyethylene terephthalate (PET) -polystyrene, or the like, The nonwoven fabric is produced by coating a synthetic resin.

Meanwhile, the wet process and the dry process may be applied to the coating process, and a method of forming the pattern in each case will be described as follows.

First, according to the wet method, a cloth is impregnated with a synthetic resin impregnation solution, then the synthetic resin is coagulated in a coagulation bath, and a synthetic resin for wet side grain coating is applied to the coagulated impregnation enclosure. The residue is coagulated again in a coagulation bath, the residual solvent remaining on the fabric is washed with water, dried, and then printed with necessary patterns or pressed using a roll having a pattern engraved with embossed and embossed patterns, Is formed on the surface thereof.

However, such a wet process has a problem that the coagulation time is long, the water washing process is essentially included, and the production efficiency is lowered, thereby increasing the production cost.

Therefore, a dry process is widely used rather than a wet process. The dry process is widely used, and a polyurethane for dry film is applied on a release paper, heated and dried at an appropriate temperature for curing, and then the adhesive polyurethane is applied to the hardened release paper, The pattern of the releasing paper is transferred to the surface of the synthetic leather and formed when the releasing paper is peeled off after it is dried and warmed again with the dry fabric, and as a related art, Korean Patent Registration No. 10-0757409, Korean Patent Laid- 2010-0008925.

However, the conventional dry method as described above is not only complicated but also includes a solvent such as dimethylformamide (DMF), which is essential for the polyurethane for a dry film, so that a large amount of water vapor and wastewater containing the solvent are generated Dioxin and carbon dioxide are generated in large quantities even when the finished product is incinerated, and a large amount of heavy metal is contained in the residue generated after incineration, which is a main cause of environmental pollution.

Patent Document 1: Korean Patent Registration No. 10-0757409 entitled " Process for producing breathable synthetic leather and synthetic leather thereof " Patent Document 2: Korean Patent Laid-Open No. 10-2010-0008925 "Process for producing dry synthetic leather with three-dimensional feeling using polyurethane and synthetic leather thereof"

Disclosure of the Invention The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a composite sheet for a synthetic leather, which is capable of exhibiting a leather feel through a simple process of positioning on the upper surface of a base fabric, The present invention aims to improve not only the productivity of the synthetic leather, but also the productivity of the synthetic leather, such as various patterns and patterns easily formed on the synthetic leather.

In preparing the composite sheet for synthetic leather, a first hot-melt film layer is formed on the non-woven type single layer, a second hot-melt film layer is formed on the bottom surface of the first hot-melt film, It is possible to obtain an appropriate level of flexibility as a whole while improving the adhesion to the base fabric and also to display the nonwoven fabric type monolayer in various patterns, patterns and colors Further, since the coating layer implements the coating effect on the monolayer, it is possible to improve durability such as abrasion resistance of the sheet, and to further enhance the beauty of the design, So that it can be implemented.

The composite sheet for synthetic leather according to the present invention is characterized in that a first hot melt film layer 12 is formed on the upper surface of a nonwoven type monolayer 13 and a second hot melt film layer 12 is formed on the lower surface of the non- And a coating layer (11) is formed on the upper surface of the first hot melt film layer (12). The composite hot melt film layer (14) is formed on the first hot melt film layer (12).

Here, the nonwoven fabric type monolayer 13 is woven by being entangled without a certain direction, and the yarn may be singly or in combination of amide yarn, polyester yarn, nylon yarn or cotton yarn, It is preferable to use them in combination.

The coating layer 11 is preferably formed of a thermoplastic polyurethane (TPU) film.

The present invention provides a composite sheet for a synthetic leather which is capable of exhibiting a leather feeling through a simple process of placing the synthetic leather on the upper surface of the base fabric and then pressing it, In addition, it is possible to improve the properties of the synthetic leather such as various and beautiful patterns and patterns easily formed on the synthetic leather. Further, in the production of the composite sheet for synthetic leather, the nonwoven type single- A second hot-melt film layer is formed on the lower surface of the first hot-melt film layer, and a coating layer made of a TPU film is formed on the first hot-melt film layer to improve adhesion to the base fabric, It is possible to realize an appropriate level of flexibility as a whole, and it is also possible to apply the nonwoven fabric type monolayer to various patterns, And can be applied to a wider range of designs and products. Further, since the coating layer implements the coating effect on the monolayer, durability such as abrasion resistance of the sheet can be improved, Thereby making it possible to realize a high-quality product.

1 is a view showing a configuration of a composite sheet for a synthetic leather according to the present invention;
FIG. 2 is a photograph of a composite sheet for a synthetic leather according to the present invention
Fig. 3 is a photograph of a nonwoven fabric type single layer according to the present invention
FIG. 4 is a photograph of a synthetic leather applying a composite sheet for synthetic leather according to the present invention
5 is a cross-sectional view of a synthetic leather to which a composite sheet for a synthetic leather according to the present invention is applied;

In order to achieve the above-mentioned effects, the present invention relates to a composite sheet for a synthetic leather, and in each drawing and detailed description it is to be understood that the present invention is not limited to the structure and operation easily understood by those skilled in the art, The detailed description and the detailed description of the specific technical composition and operation of the elements are omitted or simplified.

Hereinafter, the composite sheet for a synthetic leather according to the present invention will be described in detail.

1, a composite sheet 100 for a synthetic leather according to the present invention includes a first hot melt film layer 12 formed on an upper surface of a nonwoven fabric type monolayer 13, The second hot melt film layer 14 is formed on the lower surface of the first hot melt film layer 13 and the coating layer 11 is formed on the upper surface of the first hot melt film layer 12,

Here, the 'composite sheet for synthetic leather' refers to a synthetic leather used for various products such as shoes, bags, wallets, various pouches and the like, as well as a simple process for placing the synthetic leather on the upper surface of the base fabric, Quot; refers to a sheet capable of expressing a synthetic leather feel by itself.

The nonwoven fabric type monolayer 13 is used for expressing patterns, patterns, and colors for expressing a synthetic leather feeling when the composite sheet is applied. As shown in FIG. 3, the nonwoven fabric type monolayer 13 is woven And the raw material is used alone or in combination of two or more of amide yarn, polyester yarn, nylon yarn or cotton yarn. Meanwhile, as described above, the nonwoven fabric type monolayer 13 is not limited to the type of the yarn as a known fabric, and various well-known nonwoven fabric fabrics can be applied.

The first hot melt film layer 12 and the second hot melt film layer 14 are formed by bonding the coating layer 11 and the nonwoven fabric type monolayer 13 and the nonwoven type monolayer 13 and the base fabric 200 The coating layer 11 acts as a coating on the uppermost layer of the composite composite sheet 100 to improve the durability such as abrasion resistance and further emphasizes the beauty of the design, And the like.

The coating layer 11, the first hot-melt film layer 12, and the second hot-melt film layer 14 may be formed of various synthetic resins such as polyurethane, polyester, polyethylene, or polyacrylic, It is preferable to use a TPU film. However, the present invention is not limited thereto and various known synthetic resins capable of realizing the above object can be applied. On the other hand, the coating layer 11 serves to coat the sheet without being melted when heated by a hot press, and the first hot melt film layer 12 and the second hot melt film layer 14 are melted to serve as an adhesive, 11) is higher in melting point than the first hot melt film layer 12 and the second hot melt film layer 14, it is possible to apply various synthetic resins as described above. For example, when the melting point of the first hot-melt film layer 12 and the second hot-melt film layer 14 is 110 to 130 ° C, the coating layer 11 has a melting point of 140 to 170 ° C. Since the melting point and the hardness of the TPU film can be variously set in the manufacturing process, the melting point of the coating layer 11, the first hot melt film layer 12 and the second hot melt film layer 14 is It is possible to set various melting points on the assumption that the coating layer 11 has a higher melting point than the first hot-melt film layer 12 and the second hot-melt film layer 14.

Meanwhile, the composite sheet 100 for synthetic leather having the above-described structure can be developed to have the same leather feeling as shown in FIG. 4 by simply pressing and pressing the synthetic leather sheet 100 on the base fabric 200.

As shown in FIG. 5, the base fabric 200 may be made of synthetic resin (for example, poly (poly), poly (B) formed with a backing layer (for example, a fabric woven with nylon yarn) via a hot-melt layer h on the upper and lower surfaces of a foam layer f made of polyurethane foam, urethane, EVA, ), But it is also possible to use all known types of base fabrics 200, which are also known in the art as known base fabrics, as described above.

The synthetic leather composite sheet 100 may be placed on the base fabric 200 and then pressurized using a conventional flat or hot press using a rolling die. cm 2 for 10 to 60 seconds and then cooled at 20 to 40 ° C at a pressure of 10 to 70 kg / cm 2 for 10 to 60 seconds. However, the present invention is not limited to this, and the coating layer 11, the first hot- The layer 12 and the second hot melt film layer 14, the field of use of the final product, the environment, and the like.

If the foam layer (f) is provided on the base fabric 200 as described above, it is required to perform a cooling process after the hot press. Since the cooling process is a well-known process, Can be applied. In addition, the cooling process is not essential and may be selectively applied when the foam layer (f) is provided on the base fabric 200 as described above. The foam layer may be varied depending on the field of use and environment of the final product. .

That is, the present invention provides a composite sheet 100 for a synthetic leather, which is capable of exhibiting a leather feeling through a simple process of positioning the composite sheet 100 on the upper surface of the base fabric 200, The composite sheet 100 for synthetic leather can be improved in productivity as well as productivity and a variety of beautiful patterns and patterns can be easily formed on the synthetic leather. The first hot melt film layer 12 is formed on the upper surface of the nonwoven fabric type monolayer 13 and the second hot melt film layer 14 is formed on the lower surface of the first hot melt film layer 12, By forming the coating layer 11 made of the TPU film on the upper surface, the adhesion to the base fabric 200 can be improved and the flexibility can be achieved as a whole, It is possible to display the entrance barrier layer 13 in a variety of patterns, patterns, and colors, so that it can be applied to a wider range of designs and products. Further, as the coating layer 11 realizes the coating effect on the monolayer 13, The durability such as abrasion resistance of the product can be improved, and the beauty of the design can be further emphasized and the product can be upgraded.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It can be understood that it is possible.

100: Composite sheet for synthetic leather
11: Coating layer
12: first hot melt film layer
13: nonwoven fabric type single layer
14: second hot melt film layer
200: Base fabric

Claims (3)

In the composite sheet for synthetic leather,
The first hot melt film layer 12 is formed on the upper surface of the non-woven type raw monolayer 13,
The second hot melt film layer 14 is formed on the lower surface of the nonwoven fabric type monolayer 13,
Characterized in that a coating layer (11) is formed on the upper surface of the first hot melt film layer (12).
The method according to claim 1,
The nonwoven fabric type monolayer (13)
Characterized in that the yarn is woven by being entangled without having a certain directionality. The yarn is used either singly or in combination of two or more of amide yarn, polyester yarn, nylon yarn or cotton yarn, Composite sheet for synthetic leather.
The method according to claim 1,
The coating layer (11)
A composite sheet for synthetic leather characterized by comprising a TPU (thermoplastic polyurethane) film.
KR1020150188668A 2015-12-29 2015-12-29 Composite sheet for synthetic leather KR20170078298A (en)

Priority Applications (1)

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KR1020150188668A KR20170078298A (en) 2015-12-29 2015-12-29 Composite sheet for synthetic leather

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150188668A KR20170078298A (en) 2015-12-29 2015-12-29 Composite sheet for synthetic leather

Publications (1)

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KR20170078298A true KR20170078298A (en) 2017-07-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114889294A (en) * 2022-05-06 2022-08-12 浙江嘉声环保科技有限公司 Production process of inflatable sleeping mat
CN115558277A (en) * 2021-07-01 2023-01-03 三芳化学工业股份有限公司 Thermoplastic film and method for producing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115558277A (en) * 2021-07-01 2023-01-03 三芳化学工业股份有限公司 Thermoplastic film and method for producing same
CN114889294A (en) * 2022-05-06 2022-08-12 浙江嘉声环保科技有限公司 Production process of inflatable sleeping mat

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