CN110938385A - 1-4.9-micron high-transmittance ultrathin PU film - Google Patents
1-4.9-micron high-transmittance ultrathin PU film Download PDFInfo
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- CN110938385A CN110938385A CN201911350318.1A CN201911350318A CN110938385A CN 110938385 A CN110938385 A CN 110938385A CN 201911350318 A CN201911350318 A CN 201911350318A CN 110938385 A CN110938385 A CN 110938385A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/10—Presence of homo or copolymers of propene
- C09J2423/106—Presence of homo or copolymers of propene in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
Abstract
The invention discloses a 1-4.9 mu m high-transmittance ultrathin PU film, which comprises an OPP film and a high-transmittance resin film, wherein the high-transmittance resin film is coated on the surface of the OPP film, and the high-transmittance resin film and the OPP film are connected into a whole after being processed by rolling and drying processes; the high-transmittance resin film consists of three raw materials, namely high-transmittance PU resin, MEK and a leveling agent; and mixing the three raw materials of the high-transparency resin film to prepare glue during processing, coating the glue on an OPP film, and drying and forming. The high-permeability ultrathin PU film prepared by the invention has high moisture permeability, water pressure, portability and good elasticity, and can reach the water pressure JIS L1092: 5000 or more, moisture permeability of JIS L10992012A 1: 7000 is suitable for the ironing film of any fabric, has good hand feeling, and can increase the elasticity and the vertical feeling of the fabric.
Description
Technical Field
The invention particularly relates to a 1-4.9 mu m high-transmittance ultrathin PU film.
Background
PU is an abbreviation for Polyurethane, the Chinese name Polyurethane. The PU is polyurethane, and the PU film is a polyurethane film, is a non-toxic and harmless environment-friendly material, has no harm to human skin, and is widely applied to the fields of clothing fabrics, medical treatment and health, leather and the like.
In the field of garment fabrics, the recent popular ultrathin fabrics are attached, and if the PU film still feels too thick before, the style is not good, so that the functional breathable moisture-permeable fabric made of the PU film is developed according to social requirements.
At present, the functional breathable and moisture permeable fabric needs to be made by two methods:
1. the fabric is manufactured by sticking a PU high-permeability film, but the price of sticking the PU film is high, the moisture permeability of the stuck finished product is not high, and the highest standard of the general moisture permeability is JIS L10992012A 1: 3500;
2. the air and moisture permeability is realized by adopting a coating mode, but the coating has a hand feeling which is relatively flat and stiff, and the moisture permeability is not too high, and the general standard is JIS L10992012A 1:3000, water pressure JIS L1092: 5000.
because the common ultrathin PU film only has moisture permeability and no water pressure, the fabrics made of the two PU films have poor air permeability and moisture permeability and poor hand feeling, and the invention of the ultrathin PU film with high transmittance of 1-4.9 μm is necessary.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the high-permeability ultrathin PU film with the thickness of 1-4.9 microns so as to achieve the purposes of air permeability, moisture permeability and good hand feeling of the prepared fabric.
In order to achieve the purpose, the invention provides the following technical scheme: a1-4.9 μm high-transmittance ultrathin PU film comprises an OPP film and a high-transmittance resin film, wherein the high-transmittance resin film is coated on the surface of the OPP film, and the high-transmittance resin film and the OPP film are connected into a whole after being processed by rolling and drying processes;
the high-transmittance resin film consists of three raw materials, namely high-transmittance PU resin, MEK and a leveling agent.
Further, the high-transmittance resin film adopts three raw materials in proportion: the high-transmittance PU resin accounts for 100 percent, the MEK accounts for 100 percent, and the flatting agent accounts for 0.3 to 0.5 percent.
Further, the high-transmittance resin film is prepared by heating and mixing the high-transmittance PU resin, the MEK and the leveling agent to prepare glue, and the viscosity of the glue is set to be 900-.
The invention also provides a processing technology of the 1-4.9 mu m high-transmittance ultrathin PU film, which comprises the following operation steps:
s1, adding the high-permeability PU resin, the MEK and the flatting agent into a stirring machine with a heating function according to the proportion, stirring and heating, mixing uniformly, then preparing glue with certain viscosity, and defoaming for later use;
s2, on the film making machine, adjusting the height of the coating knife and the coating head and the distance between the coating knife and the coating head according to the film making thickness, then installing and connecting the OPP film, and setting the drying temperature of the film making machine: 70-90 ℃, and setting the air speed: 100-120;
s3, pumping the glue prepared in the step S1 to a coating knife by a glue pump, and starting production at the speed of 60 yards;
and S4, winding the formed high-transparency ultrathin PU film finished product by a winding machine, and storing.
Further, the high-transmittance PU resin, MEK, and leveling agent described in step S1 are heated in a stirrer at a temperature of 60 ℃.
Further, the defoaming process in step S1 specifically includes: vacuum defoaming is adopted.
Further, in step S3, the specific production flow is: and uniformly paving the glue by adopting a coating knife, then laminating the glue and the OPP film pressing roller into a whole by adopting a coating head, and then drying and molding the laminated film body by the drying temperature and the wind speed set in the step S2.
The embodiment of the invention has the following advantages:
1. the invention adopts high-transparency PU resin, MEK and a flatting agent to prepare high-transparency resin film glue, adopts a coating knife and a coating head to coat the glue on an OPP film, and can obtain a high-transparency ultrathin PU film with the thickness of 1-4.9 mu m after drying and forming, the high-transparency ultrathin PU film has high moisture permeability and water pressure, and the water pressure of the high-transparency ultrathin PU film can reach JIS L1092: 5000 or more, high moisture permeability JIS L10992012B 1 standard: 22 ten thousand, the finished product is finished by the method of JIS L10992012A 1: 7000;
2. the high-permeability ultrathin PU film prepared by the invention is light, convenient, good in elasticity and free from swelling;
3. the fabric is suitable for ironing films of any fabrics, has good hand feeling, and can increase the elasticity and the vertical feeling of the fabrics;
4. the finished product of the high-permeability PU film can be used for achieving liner-free and velvet-proof.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a cross-sectional view of a high-transmittance ultrathin PU film provided by the present invention.
In the figure: 0PP film 1 and high-permeability resin film 2.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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
Referring to the attached figure 1 of the specification, the 1-4.9 μm high-transmittance ultrathin PU film of the embodiment comprises an OPP film 1 and a high-transmittance resin film 2, wherein the high-transmittance resin film 2 is coated on the surface of the OPP film 1, and the high-transmittance resin film 2 and the OPP film 1 are connected into a whole after being processed by rolling and drying processes;
the high-transmittance resin film 2 is composed of three raw materials of high-transmittance PU resin, MEK and a leveling agent.
Further, the high-transmittance resin film 2 adopts three raw materials in proportion: the high-transmittance PU resin accounts for 100 percent, the MEK accounts for 100 percent, and the flatting agent accounts for 0.3 to 0.5 percent.
Further, the high-transmittance resin film 2 is made of high-transmittance PU resin, MEK and a leveling agent through heating and mixing, and the viscosity of the glue is set to be 900-.
Specifically, in this embodiment, the high-transmittance resin film 2 is made of three materials in the following ratio: the high-transmittance PU resin accounts for 100 percent, the MEK accounts for 100 percent, and the flatting agent accounts for 0.3 percent;
the high-transparency resin film 2 is prepared by heating and mixing high-transparency PU resin, MEK and a flatting agent to prepare glue, the viscosity of the glue is set to 900, and the viscosity is required to be consistent every time during production;
the invention also provides a processing technology of the 1-4.9 mu m high-transmittance ultrathin PU film, which comprises the following operation steps:
s1, adding the high-permeability PU resin, the MEK and the leveling agent into a stirring machine with a heating function according to the proportion, stirring and heating at 60 ℃, mixing uniformly, then preparing glue with certain viscosity, and defoaming in vacuum for later use;
s2, on the film making machine, adjusting the height of the coating knife and the coating head and the distance between the coating knife and the coating head according to the film making thickness, then installing and connecting the OPP film 1, and setting the drying temperature of the film making machine: 70-90 ℃, and setting the air speed: 100-120;
s3, pumping the glue adjusted in the step S1 to a coating knife by a glue pump, and starting production at the speed of 60 yards, wherein the specific production flow is as follows: uniformly paving glue by using a coating knife, then laminating the glue and the OPP film 1 into a whole by using a coating head, and then drying and molding the laminated film body at the drying temperature and the wind speed set in the step S2;
and S4, winding the formed high-transparency ultrathin PU film finished product by a winding machine, and storing.
Example 2
Referring to the attached figure 1 of the specification, the 1-4.9 μm high-transmittance ultrathin PU film of the embodiment comprises an OPP film 1 and a high-transmittance resin film 2, wherein the high-transmittance resin film 2 is coated on the surface of the OPP film 1, and the high-transmittance resin film 2 and the OPP film 1 are connected into a whole after being processed by rolling and drying processes;
specifically, in this embodiment, the high-transmittance resin film 2 uses three raw materials in the following ratio: the high-transmittance PU resin accounts for 100 percent, the MEK accounts for 100 percent, and the flatting agent accounts for 0.4 percent;
the high-transparency resin film 2 is prepared by heating and mixing high-transparency PU resin, MEK and a flatting agent to prepare glue, the viscosity of the glue is set to be 1000, and the viscosity is required to be consistent every time during production;
the invention also provides a processing technology of the 1-4.9 mu m high-transmittance ultrathin PU film, which comprises the following operation steps:
s1, adding the high-permeability PU resin, the MEK and the leveling agent into a stirring machine with a heating function according to the proportion, stirring and heating at 60 ℃, mixing uniformly, then preparing glue with certain viscosity, and defoaming in vacuum for later use;
s2, on the film making machine, adjusting the height of the coating knife and the coating head and the distance between the coating knife and the coating head according to the film making thickness, then installing and connecting the OPP film 1, and setting the drying temperature of the film making machine: 70-90 ℃, and setting the air speed: 100-120;
s3, pumping the glue adjusted in the step S1 to a coating knife by a glue pump, and starting production at the speed of 60 yards, wherein the specific production flow is as follows: uniformly paving glue by using a coating knife, then laminating the glue and the OPP film 1 into a whole by using a coating head, and then drying and molding the laminated film body at the drying temperature and the wind speed set in the step S2;
and S4, winding the formed high-transparency ultrathin PU film finished product by a winding machine, and storing.
Example 3
Referring to the attached figure 1 of the specification, the 1-4.9 μm high-transmittance ultrathin PU film of the embodiment comprises an OPP film 1 and a high-transmittance resin film 2, wherein the high-transmittance resin film 2 is coated on the surface of the OPP film 1, and the high-transmittance resin film 2 and the OPP film 1 are connected into a whole after being processed by rolling and drying processes;
specifically, in this embodiment, the high-transmittance resin film 2 uses three raw materials in the following ratio: the high-transmittance PU resin accounts for 100 percent, the MEK accounts for 100 percent, and the flatting agent accounts for 0.5 percent;
the high-transparency resin film 2 is prepared by heating and mixing high-transparency PU resin, MEK and a flatting agent to prepare glue, the viscosity of the glue is set to be 1100, and the viscosity is required to be consistent every time during production;
the invention also provides a processing technology of the 1-4.9 mu m high-transmittance ultrathin PU film, which comprises the following operation steps:
s1, adding the high-permeability PU resin, the MEK and the leveling agent into a stirring machine with a heating function according to the proportion, stirring and heating at 60 ℃, mixing uniformly, then preparing glue with certain viscosity, and defoaming in vacuum for later use;
s2, on the film making machine, adjusting the height of the coating knife and the coating head and the distance between the coating knife and the coating head according to the film making thickness, then installing and connecting the OPP film 1, and setting the drying temperature of the film making machine: 70-90 ℃, and setting the air speed: 100-120;
s3, pumping the glue adjusted in the step S1 to a coating knife by a glue pump, and starting production at the speed of 60 yards, wherein the specific production flow is as follows: uniformly paving glue by using a coating knife, then laminating the glue and the OPP film 1 into a whole by using a coating head, and then drying and molding the laminated film body at the drying temperature and the wind speed set in the step S2;
and S4, winding the formed high-transparency ultrathin PU film finished product by a winding machine, and storing.
The high-permeability ultrathin PU films prepared in the above examples 1 to 3 were respectively subjected to moisture permeability and water pressure tests by using a fabric moisture permeability tester and a hydrostatic pressure resistance tester, to obtain the following test data:
| moisture permeability standard | Standard of water pressure | |
| Example 1 | JIS L10992012 A1:6500 | JIS L1092：4500-5000 |
| Example 2 | JIS L10992012 A1:7000 | JIS L1092: over 5000 |
| Example 3 | JIS L10992012 A1:6500 | JIS L1092：4500-5000 |
As can be seen from the above table, when the high-transmittance resin film 2 is prepared in example 2, the addition ratio of the leveling agent is moderate, and the viscosity of the glue formed after the high-transmittance PU resin, the MEK and the leveling agent are mixed is moderate, so that the moisture permeability and the water pressure of the finished high-transmittance ultrathin PU film product processed by the method are highest.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. A1 μm-4.9 μm high-transmittance ultrathin PU film is characterized in that: the high-transmittance optical film comprises an OPP film (1) and a high-transmittance resin film (2), wherein the high-transmittance resin film (2) is coated on the surface of the OPP film (1), and the high-transmittance resin film (2) and the OPP film (1) are connected into a whole after being processed by rolling and drying processes;
the high-transmittance resin film (2) is composed of three raw materials of high-transmittance PU resin, MEK and a leveling agent.
2. The ultra-thin PU film with high transmittance of 1 μm to 4.9 μm according to claim 1, wherein: the high-permeability resin film (2) is prepared from the following three raw materials in percentage by weight: the high-transmittance PU resin accounts for 100 percent, the MEK accounts for 100 percent, and the flatting agent accounts for 0.3 to 0.5 percent.
3. The ultra-thin PU film with high transmittance of 1 μm to 4.9 μm according to claim 1, wherein: the high-transmittance resin film (2) is prepared by heating and mixing high-transmittance PU resin, MEK and a leveling agent to prepare glue, and the viscosity of the glue is set to be 900-1100.
4. The process for preparing ultra-thin PU film with high transmittance of 1 μm-4.9 μm according to any one of claims 1-3, wherein: the method comprises the following operation steps:
s1, adding the high-permeability PU resin, the MEK and the flatting agent into a stirring machine with a heating function according to the proportion, stirring and heating, mixing uniformly, then preparing glue with certain viscosity, and defoaming for later use;
s2, on the film making machine, adjusting the height of the coating knife and the coating head and the distance between the coating knife and the coating head according to the film making thickness, then installing and connecting the OPP film (1), and setting the drying temperature of the film making machine: 70-90 ℃, and setting the air speed: 100-120;
s3, pumping the glue prepared in the step S1 to a coating knife by a glue pump, and starting production at the speed of 60 yards;
and S4, winding the formed high-transparency ultrathin PU film finished product by a winding machine, and storing.
5. The process for preparing ultra-thin PU film with high transmittance of 1 μm-4.9 μm according to claim 4, wherein: the high-permeability PU resin, the MEK and the leveling agent in the step S1 are heated in a stirrer at a temperature of 60 ℃.
6. The process for preparing ultra-thin PU film with high transmittance of 1 μm-4.9 μm according to claim 4, wherein: the defoaming process in the step S1 specifically includes: vacuum defoaming is adopted.
7. The process for preparing ultra-thin PU film with high transmittance of 1 μm-4.9 μm according to claim 4, wherein: in step S3, the specific production flow is: uniformly paving glue by adopting a coating knife, then laminating the glue and the OPP film (1) into a whole by adopting a coating head, and then drying and molding the laminated film body by the drying temperature and the wind speed set in the step S2.
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| WO2023232098A1 (en) * | 2022-06-02 | 2023-12-07 | 吴江市汉塔纺织整理有限公司 | Preparation method for ultra-thin and ultra-breathable microporous membrane |
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Application publication date: 20200331 |