CN110588122A - Non-woven fabric containing casting film - Google Patents

Non-woven fabric containing casting film Download PDF

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Publication number
CN110588122A
CN110588122A CN201911037042.1A CN201911037042A CN110588122A CN 110588122 A CN110588122 A CN 110588122A CN 201911037042 A CN201911037042 A CN 201911037042A CN 110588122 A CN110588122 A CN 110588122A
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China
Prior art keywords
layer
woven fabrics
polypropylene
woven fabric
casting film
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CN201911037042.1A
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Chinese (zh)
Inventor
李娇
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Jiangsu Jinrongtai New Material Technology Co Ltd
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Jiangsu Jinrongtai New Material Technology Co Ltd
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Priority to CN201911037042.1A priority Critical patent/CN110588122A/en
Publication of CN110588122A publication Critical patent/CN110588122A/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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/404—Multi-coloured
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to the technical field of non-woven fabrics, and discloses a non-woven fabric containing a cast film, which comprises a non-woven fabric base layer, wherein the non-woven fabric is made of polypropylene (PP), the specific gravity of the polypropylene is three fifths of that of cotton, the non-woven fabric base layer made of polypropylene fibers has porosity, the polypropylene has a weak chemical structure, molecular chains can be easily broken, a propylene-based elastomer bonding layer is arranged on the upper surface of the non-woven fabric base layer, and the cast film is arranged on the upper surface of the propylene-based elastomer bonding layer. This non-woven fabrics that contains casting film is provided with thermoplastic polyurethane elastomer layer through casting film for the tensile properties of the non-woven fabrics that contains casting film is higher, and makes the non-woven fabrics that contains casting film have higher tension and toughness, is provided with non-crystallization polyethylene terephthalate layer through casting film, makes the separation performance of the non-woven fabrics that contains casting film higher, has better rain-proof, dampproofing, mould proof performance.

Description

Non-woven fabric containing casting film
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a non-woven fabric comprising a casting film.
Background
Nonwoven fabrics, also known as nonwovens, are composed of oriented or random fibers. The non-woven fabric is called as cloth because of the appearance and certain properties of the cloth, and the non-woven fabric comprises terylene, polypropylene fiber, chinlon, spandex, acrylic fiber and the like according to components. The non-woven fabric made of the polypropylene resin as the main production raw material has the advantages of fluffiness, good hand feeling, good air permeability, easy maintenance of dry and comfortable cloth surface and easy washing. However, the nonwoven fabric made of polypropylene resin as a main production raw material is inferior in strength and durability to woven fabrics, and the barrier property of the nonwoven fabric made of polypropylene resin as a main production raw material is inferior to that of the crystalline plastic shell.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the non-woven fabric containing the casting film, which has the advantages of high barrier property to oil and water, higher tensile strength, higher toughness and the like, and solves the problems that the non-woven fabric prepared by taking polypropylene resin as a main production raw material has poorer strength and durability compared with woven fabric, and the non-woven fabric prepared by taking the polypropylene resin as a main production raw material has poorer barrier property compared with a crystalline plastic shell.
(II) technical scheme
In order to achieve the purposes of high barrier property to oil and water, high tensile strength and high toughness, the invention provides the following technical scheme: the utility model provides a non-woven fabrics that contains curtain coating film, includes the non-woven fabrics basic unit, the material of non-woven fabrics is polypropylene (PP), and the proportion of polypropylene is three fifths of cotton, and the non-woven fabrics basic unit that polypropylene fiber constitutes has porousness, and the chemical structure of polypropylene is insecure, and the molecular chain just can be split very easily, and the upper surface of non-woven fabrics basic unit is provided with propenyl elastomer tie coat, the upper surface of propenyl elastomer tie coat is provided with curtain coating film, through first tie coat adhesion between non-woven fabrics basic unit and the curtain coating film, curtain coating film is multilayer coextrusion film, curtain coating film contains and includes: a thermoplastic polyurethane elastomer (TPU) layer, a Low Density Polyethylene (LDPE) layer and an amorphous polyethylene terephthalate (APET) layer, wherein the content of the thermoplastic polyurethane elastomer is 70-80 parts, and the content of the low density polyethylene is 3-5 parts; the content of the non-crystallized polyethylene terephthalate is 15 to 20 parts.
Preferably, the cast film is prepared by casting thermoplastic polyurethane elastomer, low density polyethylene and amorphous polyethylene terephthalate in proportions into a casting machine to produce a non-stretched, non-oriented cast film by melt casting quenching.
Preferably, the thermoplastic polyurethane elastomer layer is a support layer, and plays a role in supporting the casting film and enhancing the tensile property and the aging resistance of the casting film, the amorphous polyethylene terephthalate layer is a composite layer and plays a role in high barrier effect on the casting film, and the low-density polyethylene layer is a bonding layer and is used for bonding the thermoplastic polyurethane elastomer layer and the amorphous polyethylene terephthalate layer.
Preferably, color master batches are added in the preparation process of the non-woven fabric base layer, the diameter of each color master batch is 2-4mm, and the water content of each color master batch is less than 0.05%.
Preferably, the thickness of the cast film is 0.15mm to 0.22mm, wherein the thickness of the amorphous polyethylene terephthalate layer and the adhesive thermoplastic polyurethane elastic layer are both 0.05 to 0.1mm, and the thickness of the low density polyethylene layer is 0.02 mm.
Preferably, the non-woven fabric base layer is prepared by melting polypropylene and color master batch, then extruding, then stretching the extruded polypropylene melt to form continuous filaments, laying the filaments into a fiber net, and then thermally bonding and chemically bonding the fiber net to form the non-woven fabric base layer.
Preferably, the side of the non-woven fabric base layer which is not bonded with the casting film is provided with a printing pattern, and the application range of the non-woven fabric is marked in the printing pattern.
(III) advantageous effects
Compared with the prior art, the invention provides the non-woven fabric containing the casting film, which has the following beneficial effects:
1. this non-woven fabrics that contains casting film is provided with thermoplastic polyurethane elastomer layer through casting film for the tensile properties of the non-woven fabrics that contains casting film is higher, and makes the non-woven fabrics that contains casting film have higher tension and toughness, is provided with non-crystallization polyethylene terephthalate layer through casting film, makes the separation performance of the non-woven fabrics that contains casting film higher, has better rain-proof, dampproofing, mould proof performance.
2. This non-woven fabrics that contains curtain coating membrane is polypropylene through the non-woven fabrics for the quality of non-woven fabrics is lighter, and the compliance of non-woven fabrics is higher, and the polypropylene is more easily degraded, has reduced the pollution of non-woven fabrics to the environment, through the masterbatch that adds different colours in the non-woven fabrics, makes the pattern of the non-woven fabrics that contains the curtain coating membrane comparatively changeable, has improved the aesthetic property of non-woven fabrics.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The utility model provides a non-woven fabrics that contains curtain coating film, including non-woven fabrics basic unit, the material of non-woven fabrics is polypropylene (PP), the proportion of polypropylene is three fifths of cotton, and the non-woven fabrics basic unit that polypropylene fiber constitutes has porousness, the chemical structure of polypropylene is insecure, the molecular chain just can be split very easily, be polypropylene through the non-woven fabrics, make the quality of non-woven fabrics lighter, and the compliance of non-woven fabrics is higher, and polypropylene is easier to be degraded, the pollution of non-woven fabrics to the environment has been reduced, the upper surface of non-woven fabrics basic unit is provided with propenyl elastomer tie coat, the upper surface of propenyl elastomer tie coat is provided with curtain coating film, through first tie coat adhesion between non-woven fabrics basic unit and the curtain coating film: a thermoplastic polyurethane elastomer (TPU) layer, a Low Density Polyethylene (LDPE) layer and an amorphous polyethylene terephthalate (APET) layer, wherein the thermoplastic polyurethane elastomer content is 70 parts, and the low density polyethylene content is 4 parts; the content of the amorphous polyethylene terephthalate was 15 parts.
Specifically, the preparation of casting film is through pouring into the casting machine with thermoplastic polyurethane elastomer, low density polyethylene and amorphous polyethylene terephthalate in proportion, through the melt casting quench production one kind not tensile, unoriented crowded film of flat of one kind, be provided with thermoplastic polyurethane elastomer layer through the casting film, make the tensile properties of the non-woven fabrics that contains the casting film higher, and make the non-woven fabrics that contains the casting film have higher tension and toughness, be provided with amorphous polyethylene terephthalate layer through the casting film, make the barrier property of the non-woven fabrics that contains the casting film higher, have better rain-proof, dampproofing, mould proof properties.
Specifically, thermoplastic polyurethane elastomer layer is the supporting layer, play the supporting role to the curtain coating membrane, the tensile strength and the ageing-resistant performance of reinforcing curtain coating membrane, the life of the non-woven fabrics that contains the curtain coating membrane has been improved, and the bearing capacity of the wrapping goods that the non-woven fabrics that contains the curtain coating membrane made has been improved, amorphous polyethylene terephthalate layer is the composite bed, play high barrier effect to the curtain coating membrane, make the non-woven fabrics that contains the curtain coating membrane easily hinder the infiltration of water, the low density polyethylene layer is the tie coat, a thermoplastic polyurethane elastomer layer and amorphous polyethylene terephthalate layer are used for gluing.
Specifically, the color master batch is added in the preparation process of the non-woven fabric base layer, the diameter of the color master batch is 2-4mm, the water content of the color master batch is less than 0.05%, and the color master batches with different colors are added in the non-woven fabric, so that the non-woven fabric containing the casting film is changeable in style, and the attractiveness of the non-woven fabric is improved.
Specifically, the thickness of the casting film is 0.16mm, wherein the thickness of the amorphous polyethylene terephthalate layer is 0.08mm, the thickness of the adhesive thermoplastic polyurethane elastic layer is 0.06mm, and the thickness of the low-density polyethylene layer is 0.02mm, and the tensile property and the barrier property of the non-woven fabric comprising the casting film can be easily adjusted by changing the thickness of each layer of the casting film.
The preparation method of the non-woven fabric base layer comprises the steps of melting polypropylene and color master batches, then extruding, stretching the extruded polypropylene melt to form continuous filaments, laying the filaments into a fiber net, thermally bonding and chemically bonding the fiber net to form the non-woven fabric base layer, and adopting spun-bonded non-woven fabric to prepare the non-woven fabric base layer, so that fiber bundles of the non-woven fabric base layer are dense, and the tension of the non-woven fabric base layer is improved.
Specifically, the non-woven fabrics basic unit is not provided with the printing pattern with the one side of curtain coating membrane bonding, and the sign has the application scope of non-woven fabrics in the printing pattern, through being provided with the printing pattern sign for the promptness of the non-woven fabrics that contains the curtain coating membrane is stronger, makes user of service's selection and use comparatively convenient.
The nonwoven fabric produced in this example was randomly held in a tensile tester to measure the longitudinal tensile properties under the following test conditions: the temperature is 27 ℃, the clamping length is 200mm, and the test speed is 200 mm/min. The test results are shown in table 1:
table 1 tensile test results
The nonwoven fabric manufactured in this example was randomly held in a water vapor transmission rate tester to measure the water vapor transmission rate under the following test conditions: the temperature is 38 ℃, the relative humidity is 98 percent, and the wind speed is 2 m/s. The test results are shown in table 2:
TABLE 2 Water vapor Transmission Rate test results
Example 2
The utility model provides a non-woven fabrics that contains curtain coating film, including non-woven fabrics basic unit, the material of non-woven fabrics is polypropylene (PP), the proportion of polypropylene is three fifths of cotton, and the non-woven fabrics basic unit that polypropylene fiber constitutes has porousness, the chemical structure of polypropylene is insecure, the molecular chain just can be split very easily, the upper surface of non-woven fabrics basic unit is provided with propenyl elastomer tie coat, the upper surface of propenyl elastomer tie coat is provided with curtain coating film, through first tie coat bonding between non-woven fabrics basic unit and the curtain coating film, curtain coating film is multilayer coextrusion film, curtain coating film contains and includes: a thermoplastic polyurethane elastomer (TPU) layer, a Low Density Polyethylene (LDPE) layer and an amorphous polyethylene terephthalate (APET) layer, wherein the thermoplastic polyurethane elastomer content is 75 parts, and the low density polyethylene content is 4 parts; the content of the amorphous polyethylene terephthalate was 17.5 parts.
Specifically, cast films are prepared by injecting thermoplastic polyurethane elastomer, low density polyethylene and amorphous polyethylene terephthalate in proportions into a casting machine and producing a non-stretched, non-oriented cast film by melt casting and quenching.
Specifically, the thermoplastic polyurethane elastomer layer is a supporting layer, plays a supporting role in the casting film, enhances the tensile property and the aging resistance of the casting film, the amorphous polyethylene terephthalate layer is a composite layer, plays a high-barrier role in the casting film, and the low-density polyethylene layer is a bonding layer for bonding the thermoplastic polyurethane elastomer layer and the amorphous polyethylene terephthalate layer.
Specifically, color master batches are added in the preparation process of the non-woven fabric base layer, the diameter of each color master batch is 2-4mm, and the water content of each color master batch is less than 0.05%.
Specifically, the thickness of the cast film was 0.19mm, wherein the thickness of the amorphous polyethylene terephthalate layer was 0.1mm, the thickness of the adhesive thermoplastic polyurethane elastic layer was 0.07mm, and the thickness of the low density polyethylene layer was 0.02 mm.
The preparation method of the non-woven fabric base layer comprises the steps of melting polypropylene and color master batches, then extruding, stretching the extruded polypropylene melt to form continuous filaments, laying the filaments into a fiber net, and thermally bonding and chemically bonding the fiber net to form the non-woven fabric base layer.
Specifically, the non-woven fabric base layer is provided with a printing pattern on the side which is not bonded with the casting film, and the application range of the non-woven fabric is marked in the printing pattern.
The nonwoven fabric produced in this example was randomly held in a tensile tester to measure the longitudinal tensile properties under the following test conditions: the temperature is 27 ℃, the clamping length is 200mm, and the test speed is 200 mm/min. The test results are shown in Table 3
TABLE 3 tensile test results
The nonwoven fabric manufactured in this example was randomly held in a water vapor transmission rate tester to measure the water vapor transmission rate under the following test conditions: the temperature is 38 ℃, the relative humidity is 98 percent, and the wind speed is 2 m/s. The test results are shown in table 4:
TABLE 4 Water vapor Transmission Rate test results
Example 3
The utility model provides a non-woven fabrics that contains curtain coating film, including non-woven fabrics basic unit, the material of non-woven fabrics is polypropylene (PP), the proportion of polypropylene is three fifths of cotton, and the non-woven fabrics basic unit that polypropylene fiber constitutes has porousness, the chemical structure of polypropylene is insecure, the molecular chain just can be split very easily, the upper surface of non-woven fabrics basic unit is provided with propenyl elastomer tie coat, the upper surface of propenyl elastomer tie coat is provided with curtain coating film, through first tie coat bonding between non-woven fabrics basic unit and the curtain coating film, curtain coating film is multilayer coextrusion film, curtain coating film contains and includes: a thermoplastic polyurethane elastomer (TPU) layer, a Low Density Polyethylene (LDPE) layer and an amorphous polyethylene terephthalate (APET) layer, wherein the thermoplastic polyurethane elastomer content is 80 parts, and the low density polyethylene content is 4 parts; the content of the amorphous polyethylene terephthalate was 20 parts.
Specifically, cast films are prepared by injecting thermoplastic polyurethane elastomer, low density polyethylene and amorphous polyethylene terephthalate in proportions into a casting machine and producing a non-stretched, non-oriented cast film by melt casting and quenching.
Specifically, the thermoplastic polyurethane elastomer layer is a supporting layer, plays a supporting role in the casting film, enhances the tensile property and the aging resistance of the casting film, the amorphous polyethylene terephthalate layer is a composite layer, plays a high-barrier role in the casting film, and the low-density polyethylene layer is a bonding layer for bonding the thermoplastic polyurethane elastomer layer and the amorphous polyethylene terephthalate layer.
Specifically, color master batches are added in the preparation process of the non-woven fabric base layer, the diameter of each color master batch is 2-4mm, and the water content of each color master batch is less than 0.05%.
Specifically, the thickness of the cast film was 0.22mm, wherein the thickness of the amorphous polyethylene terephthalate layer was 0.12mm, the thickness of the adhesive thermoplastic polyurethane elastic layer was 0.08mm, and the thickness of the low density polyethylene layer was 0.02 mm.
The preparation method of the non-woven fabric base layer comprises the steps of melting polypropylene and color master batches, then extruding, stretching the extruded polypropylene melt to form continuous filaments, laying the filaments into a fiber net, and thermally bonding and chemically bonding the fiber net to form the non-woven fabric base layer.
Specifically, the non-woven fabric base layer is provided with a printing pattern on the side which is not bonded with the casting film, and the application range of the non-woven fabric is marked in the printing pattern.
The nonwoven fabric produced in this example was randomly held in a tensile tester to measure the longitudinal tensile properties under the following test conditions: the temperature is 27 ℃, the clamping length is 200mm, and the test speed is 200 mm/min. The test results are shown in Table 5
TABLE 5 tensile test results
The nonwoven fabric manufactured in this example was randomly held in a water vapor transmission rate tester to measure the water vapor transmission rate under the following test conditions: the temperature is 38 ℃, the relative humidity is 98 percent, and the wind speed is 2 m/s. The test results are shown in table 6:
TABLE 6 Water vapor Transmission Rate test results
The existing non-woven fabric is randomly held in a tensile tester to measure the longitudinal tensile property, and the test conditions are as follows: the temperature is 27 ℃, the clamping length is 200mm, and the test speed is 200 mm/min. The test results are shown in Table 7
TABLE 7 tensile test results
The existing non-woven fabric is randomly added and held in a water vapor transmission rate tester to measure the water vapor transmission rate, and the test conditions are as follows: the temperature is 38 ℃, the relative humidity is 98 percent, and the wind speed is 2 m/s. The test results are shown in table 8:
TABLE 8 Water vapor Transmission Rate test results
As can be seen from tables 1 to 8, the tensile properties and barrier properties of the nonwoven fabric including the cast film of the present invention are higher than those of the conventional nonwoven fabric, and the nonwoven fabric including the cast film prepared in example 1 is suitable for producing a packaging product with a light weight, and the nonwoven fabric including the cast film prepared in example 3 is suitable for producing a packaging product with a heavy weight.
To sum up, this non-woven fabrics that contains casting film, be provided with thermoplastic polyurethane elastomer layer through casting film, make the tensile properties of the non-woven fabrics that contains casting film higher, and make the non-woven fabrics that contains casting film have higher tension and toughness, be provided with amorphous polyethylene terephthalate layer through casting film, make the barrier property of the non-woven fabrics that contains casting film higher, better rain-proof has, dampproofing, the mould proof performance, be polypropylene through the non-woven fabrics, make the quality of non-woven fabrics lighter, and the compliance of non-woven fabrics is higher, and polypropylene is easily degraded, the pollution of non-woven fabrics to the environment has been reduced, through the masterbatch that adds different colours in the non-woven fabrics, make the style of the non-woven fabrics that contains casting film comparatively changeable, the aesthetic property of non-woven fabrics has been improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A nonwoven fabric comprising a cast film comprising a nonwoven fabric base layer, characterized in that: the material of non-woven fabrics is polypropylene (PP), and the proportion of polypropylene is three fifths of cotton, and the non-woven fabrics basic unit that polypropylene fiber constitutes has porosely, and polypropylene's chemical structure is insecure, and the molecular chain just can break very easily, and the upper surface of non-woven fabrics basic unit is provided with propenyl elastomer tie coat, the upper surface of propenyl elastomer tie coat is provided with curtain coating film, through first tie coat adhesion between non-woven fabrics basic unit and the curtain coating film, the curtain coating film is multilayer coextrusion membrane, curtain coating film contains and includes: a thermoplastic polyurethane elastomer (TPU) layer, a Low Density Polyethylene (LDPE) layer and an amorphous polyethylene terephthalate (APET) layer, wherein the content of the thermoplastic polyurethane elastomer is 70-80 parts, and the content of the low density polyethylene is 3-5 parts; the content of the non-crystallized polyethylene terephthalate is 15 to 20 parts.
2. A nonwoven fabric comprising a cast film according to claim 1, characterized in that: the cast film is prepared by proportionally injecting the thermoplastic polyurethane elastomer, the low-density polyethylene and the amorphous polyethylene terephthalate into a casting machine, and producing a non-stretched and non-oriented cast film through melt casting and quenching.
3. A nonwoven fabric comprising a cast film according to claim 1, characterized in that: the thermoplastic polyurethane elastomer layer is a supporting layer, plays a role in supporting the casting film and enhancing the tensile property and the aging resistance of the casting film, the amorphous polyethylene terephthalate layer is a composite layer and plays a role in high barrier effect on the casting film, and the low-density polyethylene layer is a bonding layer and used for bonding the thermoplastic polyurethane elastomer layer and the amorphous polyethylene terephthalate layer.
4. A nonwoven fabric comprising a cast film according to claim 1, characterized in that: the preparation method comprises the steps of adding color master batches in the preparation process of the non-woven fabric base layer, wherein the diameter of each color master batch is 2-4mm, and the water content of each color master batch is less than 0.05%.
5. A nonwoven fabric comprising a cast film according to claim 1, characterized in that: the thickness of the casting film is 0.15mm-0.22mm, wherein the thickness of the amorphous polyethylene terephthalate layer and the thickness of the adhesive thermoplastic polyurethane elastic layer are both 0.05-0.1mm, and the thickness of the low-density polyethylene layer is 0.02 mm.
6. A nonwoven fabric comprising a cast film according to claim 4, characterized in that: the preparation method of the non-woven fabric base layer comprises the steps of melting polypropylene and color master batches, then extruding, stretching the extruded polypropylene melt to form continuous filaments, laying the filaments into a fiber net, and thermally bonding and chemically bonding the fiber net to form the non-woven fabric base layer.
7. A nonwoven fabric comprising a cast film according to claim 1, characterized in that: the side of the non-woven fabric base layer, which is not bonded with the casting film, is provided with a printing pattern, and the application range of the non-woven fabric is marked in the printing pattern.
CN201911037042.1A 2019-10-29 2019-10-29 Non-woven fabric containing casting film Pending CN110588122A (en)

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