CN116512723A - PU solvent-free leather - Google Patents

PU solvent-free leather Download PDF

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Publication number
CN116512723A
CN116512723A CN202310451635.2A CN202310451635A CN116512723A CN 116512723 A CN116512723 A CN 116512723A CN 202310451635 A CN202310451635 A CN 202310451635A CN 116512723 A CN116512723 A CN 116512723A
Authority
CN
China
Prior art keywords
layer
moisture
solvent
leather
conducting
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.)
Pending
Application number
CN202310451635.2A
Other languages
Chinese (zh)
Inventor
汪炳安
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.)
Shishi Congxiang New Material Technology Co ltd
Original Assignee
Shishi Congxiang New Material Technology Co ltd
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 Shishi Congxiang New Material Technology Co ltd filed Critical Shishi Congxiang New Material Technology Co ltd
Priority to CN202310451635.2A priority Critical patent/CN116512723A/en
Publication of CN116512723A publication Critical patent/CN116512723A/en
Pending legal-status Critical Current

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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
    • B32B27/40—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
    • 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
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • 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
    • B32B2307/584—Scratch resistance
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • 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
    • B32B2307/73—Hydrophobic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Landscapes

  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The invention relates to the technical field of PU leather, in particular to PU solvent-free leather, which comprises a surface layer, a filling layer and a base layer, wherein the filling layer comprises a hydrophobic moisture-conducting layer, a breathable layer and an antibacterial layer which are positioned below the surface layer, the breathable layer is positioned between the hydrophobic moisture-conducting layer and the antibacterial layer, the surface layer is provided with a first hole communicated with the filling layer, the arrangement of the hydrophobic moisture-conducting layer improves the transverse transmission capacity of moisture, fully absorbs the moisture, utilizes the first hole to carry out the longitudinal transmission of the moisture, conducts the moisture out, absorbs moisture and dissipates heat, effectively inhibits the growth of bacteria, and improves the environmental comfort inside PU solvent-free leather products.

Description

PU solvent-free leather
Technical Field
The invention relates to the technical field of PU leather, in particular to PU solvent-free leather.
Background
PU leather is the skin of polyurethane component, is widely suitable for being used as the decoration of bags, clothes, shoes, vehicles and furniture, has been increasingly confirmed in the market, has wide application range and large quantity, is various, and is unsatisfied by the traditional natural leather.
Most of the current PU is solvent-based, is unfavorable for environmental protection, has poor wear resistance, moisture resistance and heat resistance, and especially when being used as raw materials of leather shoes, bacteria are more easily bred under a humid and high-temperature environment, so that the internal environment is poor, peculiar smell is generated, and the comfort is poor, so that the PU solvent-free leather is needed.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the scheme provides the PU solvent-free leather, which is realized by the following specific technical means: the waterproof packaging material comprises a surface layer, a filling layer and a base layer, wherein the filling layer comprises a hydrophobic moisture-conducting layer, a breathable layer and an antibacterial layer, the hydrophobic moisture-conducting layer is positioned below the surface layer, the breathable layer is positioned between the hydrophobic moisture-conducting layer and the antibacterial layer, a first hole communicated with the filling layer is formed in the surface layer, the setting of the hydrophobic moisture-conducting layer improves the transverse transmission capacity of moisture, the moisture is fully absorbed, and the first hole is utilized for carrying out the longitudinal transmission of the moisture, so that the moisture is conducted.
The first preferred technical scheme is as follows: the surface layer is a solvent-free polyurethane surface layer.
And the second preferred technical scheme is as follows: the base layer is a tensile base layer, and a hole II communicated with the antibacterial layer is formed in the base layer.
And the preferred technical scheme is as follows: and an anti-scratch film is coated on the upper side of the surface layer.
The preferable technical scheme is as follows: the surface layer is pressed with concave-convex lines, the arrangement of the concave-convex lines improves the connection strength between the surface layer and the scratch-resistant layer, and the surface layer is not easy to separate.
Adopt above-mentioned structure to make this scheme possess following beneficial effect:
1. the arrangement of the hydrophobic moisture-conducting layer improves the transverse transmission capacity of moisture, fully absorbs the moisture, and conducts the moisture out by utilizing the first holes to carry out the longitudinal transmission of the moisture;
2. the arrangement of the second holes improves the ventilation of air, and the arrangement of the sterilization layer can effectively inhibit the growth of bacteria, so that the antibacterial effect of the PU leather is integrally improved;
3. the leather is not easy to fall off, the scraping is resistant, and the abrasion is not easy.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a schematic diagram of the overall structure of the present solution.
Wherein, 1, top layer, 2, filling layer, 21, hydrophobic moisture-conducting layer, 211, moisture-absorbing layer, 212, moisture-conducting layer, 22, ventilation layer, 23, antibacterial layer, 3, base layer, 4, fine hair grain layer, 5, scratch-proof film, 6, hole I, 7, hole II.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the pu solvent-free leather comprises a solvent-free polyurethane surface layer 1, a filling layer 2 and a base layer 3, wherein the filling layer 2 comprises a hydrophobic moisture-conducting layer 21, a breathable layer 22 and an antibacterial layer 23 which are positioned below the surface layer 1, the hydrophobic moisture-conducting layer 21 comprises a moisture-absorbing layer 211 positioned at the lower side and a moisture-conducting layer 212 positioned at the upper side, a first hole 6 formed in the surface layer 1 is communicated with the moisture-conducting layer 212, the breathable layer 22 is positioned between the hydrophobic moisture-conducting layer 21 and the antibacterial layer 23, a first hole 6 communicated with the filling layer 2 is formed in the surface layer 1, the base layer 3 is a tensile-pulling base layer 3, and a second hole 7 communicated with the antibacterial layer 23 is formed in the base layer 3.
Referring to fig. 1, the pu solvent-free leather is covered with an anti-scratch film 5 on the top surface 1.
Referring to fig. 1, the pu solvent-free leather is adhesively bonded to the moisture-conductive layer 212, the moisture-absorbing layer 211, the breathable layer 22, and the antimicrobial layer 23.
Referring to fig. 1, the pu solvent-free leather is provided with a fleece layer 4 at the bottom of the base layer 3.
Referring to fig. 1, the pu solvent-free leather has a surface layer 1 with embossed texture.
In use, the lower layer realizes contact sterilization of air at the inner side and the sterilization layer through the second hole, ventilation is realized, meanwhile, moisture at the lower side flows to the hydrophobic and moisture-guiding layer through the second hole for transverse transmission, and the first hole is used for longitudinal transmission of moisture, so that the moisture is conducted and dispersed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A PU solventless leather, characterized in that: the waterproof and breathable waterproof coating comprises a surface layer (1), a filling layer (2) and a base layer (3), wherein the filling layer (2) comprises a hydrophobic moisture-conducting layer (21), a breathable layer (22) and an antibacterial layer (23) which are positioned below the surface layer (1), the breathable layer (22) is positioned between the hydrophobic moisture-conducting layer (21) and the antibacterial layer (23), and the surface layer (1) is provided with a first hole (6) communicated with the filling layer (2).
2. The PU solvent-free leather of claim 1, wherein: the surface layer (1) is a solvent-free polyurethane surface layer.
3. The PU solvent-free leather of claim 1, wherein: the hydrophobic moisture-conducting layer (21) comprises a moisture-absorbing layer (211) positioned at the lower side and a moisture-conducting layer positioned at the upper side, and a first hole (6) formed in the surface layer (1) is communicated with the moisture-conducting layer.
4. The PU solvent-free leather of claim 1, wherein: the base layer (3) is a tensile base layer (3), and a hole II (7) communicated with the antibacterial layer (23) is formed in the base layer (3).
5. The PU solvent-free leather of claim 1, wherein: the upper side of the surface layer (1) is covered with an anti-scratch film (5).
6. A PU solvent-free leather according to claim 3, wherein: the moisture-conducting layer, the moisture-absorbing layer (211), the ventilation layer (22) and the antibacterial layer (23) are connected in an adhesive mode.
7. The PU solvent-free leather of claim 1, wherein: the bottom of the base layer (3) is provided with a velvet grain layer (4).
8. The PU solvent-free leather of claim 5, wherein: concave-convex lines are pressed on the surface layer (1).
CN202310451635.2A 2023-04-25 2023-04-25 PU solvent-free leather Pending CN116512723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310451635.2A CN116512723A (en) 2023-04-25 2023-04-25 PU solvent-free leather

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310451635.2A CN116512723A (en) 2023-04-25 2023-04-25 PU solvent-free leather

Publications (1)

Publication Number Publication Date
CN116512723A true CN116512723A (en) 2023-08-01

Family

ID=87405868

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310451635.2A Pending CN116512723A (en) 2023-04-25 2023-04-25 PU solvent-free leather

Country Status (1)

Country Link
CN (1) CN116512723A (en)

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