CN111748110A - Composite polyurethane condom with adhesive layer and preparation method thereof - Google Patents
Composite polyurethane condom with adhesive layer and preparation method thereof Download PDFInfo
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- CN111748110A CN111748110A CN202010431395.6A CN202010431395A CN111748110A CN 111748110 A CN111748110 A CN 111748110A CN 202010431395 A CN202010431395 A CN 202010431395A CN 111748110 A CN111748110 A CN 111748110A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
- A61F6/02—Contraceptive devices; Pessaries; Applicators therefor for use by males
- A61F6/04—Condoms, sheaths or the like, e.g. combined with devices protecting against contagion
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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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Abstract
The invention provides a composite polyurethane condom with an adhesive layer and a preparation method thereof. The composite polyurethane condom with the adhesive layer at least comprises a first polyurethane film layer; an adhesive layer on the first film layer; a second film layer on the adhesive layer; the second film layer comprises natural rubber or polyisoprene resin; the adhesive layer comprises 0-100 wt% of polar component hydrophilic to polyurethane, 0-100 wt% of non-polar component hydrophilic to natural rubber or polyisoprene resin, and 0-100 wt% of polar-non-polar component; the adhesive layer has a thickness of 0.1-30 μm; the polyurethane condom has a thickness of 0.010-0.080 mm. According to the polyurethane condom provided by the invention, the interlayer adhesion is high, and the performances such as flexibility, strength and the like can reach the optimal performances, so that the market demand of products is met.
Description
Technical Field
The invention belongs to the field of condom materials, and particularly relates to a composite polyurethane condom with an adhesive layer and a preparation method thereof.
Background
Condoms are the most widely and simply used devices for contraception and prevention of the spread of venereal diseases in the world, and the existing products mainly comprise natural latex rubber condoms, polyisoprene condoms and polyurethane condoms.
At present, the natural latex rubber condom is large in thickness due to the material characteristics of natural latex, and meanwhile, the natural latex contains a plurality of proteins, so that certain safety risks exist in the use of protein allergic people. The polyisoprene condom material has soft texture and good transparency, does not contain protein, but has the problems of large thickness and low strength. Polyurethane condoms are characterized by high strength and high biosafety, but polyurethane films are less flexible than natural latex and Polyisoprene (PI).
At present, in order to achieve comprehensive performance, polyurethane and natural latex or polyisoprene are compounded on the market, but because polyurethane resin is a polar material and natural rubber and Polyisoprene (PI) are non-polar materials, the adhesion force of the two composite materials on the market is poor due to different polarities of the materials during compounding, so that the layering phenomenon is caused, and industrial production cannot be carried out.
Therefore, the novel composite polyurethane condom is provided, so that the properties such as softness, strength and the like can reach the optimal properties, the layering phenomenon caused by low adhesive force among different layer materials is solved, and the composite polyurethane condom has very important significance.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a composite polyurethane condom with an adhesive layer, which has a thin thickness, excellent softness and strength, and can solve the problem of delamination between different layers of materials due to low adhesion, thereby meeting the market demand of products.
It is another object of the present invention to provide a method for preparing a composite polyurethane condom with an adhesive layer as described above and in detail below.
In order to achieve the above objects and other related objects, the present invention comprises the following technical solutions:
a composite polyurethane condom with an adhesive layer, comprising at least: a first polyurethane film layer; an adhesive layer on the first polyurethane film layer; a second film layer on the adhesive layer; the second film layer comprises natural rubber or polyisoprene resin; the adhesive layer comprises 0-100 wt% of polar component hydrophilic to polyurethane, 0-100 wt% of non-polar component hydrophilic to natural rubber or polyisoprene resin, and 0-100 wt% of polar-non-polar component; the adhesive layer has a thickness of 0.1-30 μm; the polyurethane condom has a thickness of 0.010-0.080 mm.
In one embodiment of the invention, the polyurethane condom is selected from at least one of the following: the bursting pressure is more than or equal to 1 kPa; the blasting volume is more than or equal to 5L; 100% modulus less than 2.5N/mm 2.
In one embodiment of the invention, the substance of the adhesive layer is selected from at least one of the following: the glass transition temperature is less than or equal to 0 ℃; the number average molecular weight is less than or equal to 200000 g/mol; 100% tensile modulus of 2.5N/mm2 or less.
In one embodiment of the present invention, the polar component is selected from any one of polyurethane, chloroprene rubber, polyvinyl acetate resin, acrylonitrile-butadiene-styrene, vinyl acetate-ethylene copolymer resin, polyacrylate, polyvinyl chloride, protein, starch, cellulose, and epoxy resin, or any combination thereof.
In one embodiment of the present invention, the non-polar component is selected from one or any combination of natural rubber, polyolefins, silicone resins, butyl rubbers, styrene-butadiene rubber, ethylene-propylene-diene rubber, polystyrenes, polyisoprenes, polyesters, rosin resins, terpene resins, rosin resins, and their derivatives.
In one embodiment of the present invention, the polar-non-polar component is selected from organically modified polar or non-polar polymeric materials.
In one embodiment of the present invention, the organic modification is any one or a combination of any of silicone modification, organofluorine modification, silane modification, acrylate copolymerization modification, vinyl modification, aromatic monomer modification, polyether modification, amination, carboxylation, hydroxylation, sulfonation and polymerization modification.
The invention also provides a composite polyurethane condom with an adhesive layer, which at least comprises: a first polyurethane film layer; a first adhesive layer on the first polyurethane film layer; the second film layer is positioned on the bonding layer, the second bonding layer is positioned on the second film layer, and the second bonding layer and the first bonding layer have the same structure; the third polyurethane film layer is positioned on the second film layer, and the third polyurethane film layer and the first polyurethane film layer have the same structure; the second film layer comprises natural rubber or polyisoprene resin; the first adhesive layer comprises 0-100 wt% of polar component of polyurethane-philic, 0-100 wt% of non-polar component of natural rubber-philic or polyisoprene resin, 0-100 wt% of polar-non-polar component; the first adhesive layer has a thickness of 0.1-30 μm; the first adhesive layer has a 100% tensile modulus of 2.5N/mm2 or less; the polyurethane condom has a thickness of 0.010-0.080 mm.
The invention also provides a preparation method of the composite polyurethane condom with the adhesive layer, which at least comprises the following steps: impregnating polyurethane resin and drying to form a first polyurethane film layer; dipping an adhesive layer substance on the first polyurethane film layer, and drying to form an adhesive layer; dipping natural rubber or polyisoprene resin on the bonding layer, and drying to form a second film layer; dipping a release agent on the second film layer, and drying, demolding and electrically detecting to obtain the composite polyurethane condom with the bonding layer; the adhesive layer material comprises 0-100 wt% of polar component hydrophilic to polyurethane, 0-100 wt% of non-polar component hydrophilic to natural rubber or polyisoprene resin, and 0-100 wt% of polar-non-polar component; the adhesive layer has a thickness of 0.1-30 μm; the polyurethane condom has a thickness of 0.010-0.080 mm.
According to the composite polyurethane condom with the adhesive layer, the adhesive layer is additionally arranged between two different polar materials of natural rubber or polyisoprene and waterborne polyurethane to prepare the composite polyurethane condom, the adhesive force between the layers of the composite polyurethane condom is high, and the composite polyurethane condom is soaked in 50-70 ℃ alkali liquor for 1-10min without layering. In addition, the composite polyurethane condom provided by the invention bonds film layers with the same performance or different performances together through the bonding layer for composite forming, the performance advantages of each layer of material are fully exerted, the thickness of the condom is 0.010-0.080mm, and the condom has various performances such as flexibility, strength and the like, so that the performance optimization is achieved, and the market demand of products is met. In addition, the formula of the invention has low cost, adopts impregnation molding, and has simple molding process, safety and environmental protection. Other features, benefits and advantages will be apparent from the disclosure including the description and claims detailed herein.
Drawings
FIG. 1 shows a schematic structural view of one embodiment of the polyurethane condom with adhesive layer according to the invention.
Fig. 2 shows a schematic of the construction of the structural layer of the polyurethane condom with adhesive layer of fig. 1.
FIG. 3 shows a schematic structural diagram of another embodiment of the structural layer of the polyurethane condom with an adhesive layer: it comprises 5 layers.
FIG. 4 is a flow chart showing a method for preparing the polyurethane condom with adhesive layer according to the invention.
Detailed Description
The present invention is further illustrated below with reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention.
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
As shown in fig. 1 to 4, the present invention provides a polyurethane condom 100, wherein the polyurethane condom 100 is made of a polyurethane material, and has high strength, compactness and biocompatibility, and the thickness of the polyurethane condom 100 may be, for example, 0.001mm to 0.08mm, and further, for example, 0.05mm to 0.04mm, such as 0.005mm, 0.01mm, 0.015mm, 0.02mm, 0.03mm and 0.04mm, which may provide a more comfortable experience for a user and a softer and more delicate skin-friendly touch. And the problem of allergy can not occur. The polyurethane condom 100 provided by the invention can be soaked in 50-70 ℃ alkali liquor for 1-10min without delamination, for example, can be soaked in 50 ℃ sodium hydroxide solution for 3 min without delamination.
The polyurethane condom 100 having the above thickness range has a burst pressure of, for example, 1kPa or more, further 3kPa or more, for example, 3kPa, 4kPa, 5kPa, and further a burst volume of, for example, 5L or more, for example, 8L, 12L, 18L.
The strength, e.g., tensile strength, of the polyurethane condom 100 can be, e.g., greater than or equal to 30MPa, further, greater than or equal to 40MPa, and 100% modulus, e.g., less than 2.5N/mm2, e.g., 2N/mm2、1.8N/mm2、1.5N/mm2、1N/mm2。
As shown in fig. 1 and 2, the present invention provides a specific embodiment of a polyurethane condom 100, which may be composed of a multi-layer structure, such as 3 layers, 4 layers, 5 layers, 6 layers, etc., but is not limited thereto, and may be adjusted according to actual needs. Here, the polyurethane condom 100 is configured as a male condom, it being understood that it may also be configured as a female condom, as well as other shaped condoms and the like, and any product comprising the polyurethane condom 100 in the layer configuration of the present invention is intended to be within the scope of the present invention.
The polyurethane condom provided by the invention is made of a polyurethane material and a natural rubber or polyisoprene material, and the film layers on the two sides of the bonding layer are bonded by using the bonding layer with low modulus and high bonding property, so that the interlayer adhesive force with expected performance is achieved, the layering problem is avoided, the respective performance advantages of each layer material are fully exerted, and the flexibility, the strength and other properties of the polyurethane condom are optimized, thereby meeting the market demand of products.
As shown in fig. 2, the polyurethane condom 100 comprises a first polyurethane film 10, an adhesive layer 20 and a second film 30. The first polyurethane film layer 10 may be an innermost layer of the polyurethane condom 100 and may be in contact with the skin during use, but may be an outermost layer thereof and may be adjusted as needed.
As shown in fig. 2, the first polyurethane film layer 10 may be a layer made of a polyurethane resin, or may be a layer made of an emulsion of the polyurethane resin and other additives. The auxiliary agent may be, for example, functional auxiliary agents such as lubricants, bactericides, thickeners, wetting agents, antifoaming agents, water, and the like, but is not limited thereto. The polyurethane resin may be any suitable type of aliphatic polyurethane or aromatic polyurethane, further, for example, anionic, cationic, nonionic, amphoteric, solvent-based, solvent-free polyurethane, and the raw materials and preparation processes of the polyurethane may be adjusted to produce a desired polyurethane.
In some embodiments, the tensile strength of the polyurethane resin may be, for example, 25MPa or more, further 30MPa or more, for example, 35MPa, 38MPa, 40MPa, 60MPa, thereby forming a high-strength polyurethane resin, and it should be understood that the tensile strength of the polyurethane resin of the first polyurethane film layer 10 is merely a property of strength, but is not limited thereto, and more properties such as a low modulus type, a high elongation type, a water resistance type, a high burst pressure type, a high burst volume type, a dielectric breakdown type, and the like may be formed according to actual needs.
As shown in FIG. 2, the first polyurethane film layer 10 may have a thickness of, for example, 0.1 to 30 μm, such as 0.3 μm, 1 μm, 3 μm, 5 μm, 10 μm, 20 μm, 25 μm.
As shown in fig. 2, the adhesive layer 20 is disposed on the first polyurethane film layer 10, and the adhesive layer 20 includes a substance consisting of 0 to 100 wt% of a polar component that is polyurethane-philic, 0 to 100 wt% of a non-polar component that is natural rubber-philic or a polyisoprene resin, and 0 to 100 wt% of a polar-non-polar component. For example, the adhesive layer 20 is a layer composed of 100% by weight of a polar component of polyurethane-philic, a layer composed of 100% by weight of a non-polar component of natural-philic rubber or polyisoprene resin, a layer composed of 100% by weight of a polar-non-polar component, or a layer composed of 60% by weight of a polar component, 40% by weight of a non-polar component, a layer composed of 50% by weight of a polar component, 30% by weight of a non-polar component, 20% by weight of a polar-non-polar component, or the like.
The polar component is, for example, a polymer material having a polar group, and specific examples thereof include any one of polyurethane, chloroprene rubber, polyvinyl acetate resin, acrylonitrile-butadiene-styrene, vinyl acetate-ethylene copolymer resin, polyacrylates, polyvinyl chloride, proteins, starch, celluloses, and epoxy resins, or any combination thereof. The nonpolar component is, for example, a polymer material having a nonpolar group, and specific examples thereof include one or a combination of any of natural rubber, polyolefins, silicone resins, butyl rubbers, styrene-butadiene rubbers, ethylene-propylene-diene rubbers, polystyrenes, polyisoprenes, polyesters, rosin resins, terpene resins, rosin resins, and extensions thereof.
The polar-nonpolar component refers to, for example, a polymer material having both polar groups and nonpolar groups, thereby simultaneously exhibiting polarity and nonpolar properties, and the polar material, for example, the polar polymer material, may be modified by using a material having nonpolar groups, and in some specific embodiments, polyisoprene polyol or vinyl-modified aqueous polyurethane is used. It is of course also possible to modify nonpolar materials, for example nonpolar polymer materials, or to use materials with polar groups, for example polyvinyl alcohol or polyacrylic acid for modifying natural rubber, so that polymer materials with both polar and nonpolar groups are obtained,
furthermore, it should be understood that the modification process can be achieved by organic modification of the polar material or non-polar material to obtain a polymer material having both polar and non-polar groups, including but not limited to silicone modification, organofluorine modification, silane modification, acrylate copolymerization modification, vinyl modification, aromatic monomer modification, polyether modification, amination, carboxylation, hydroxylation, sulfonation. Further, the modification process may be chemical modification or physical modification, and any other suitable means.
In other embodiments, the substance of the adhesive layer 20 may also be reactive with the first polyurethane film 10 and the second polyurethane film 30, and specifically, the substance of the adhesive layer 20 may have, for example, a vinyl group, a silane group, an amino group, a carboxyl group, a hydroxyl group, and the like, so as to react with the polyurethane or the vinyl group, so that the adhesive layer 20 can form a chemical bond with the polyurethane or the natural rubber.
The structure of the adhesive layer 20 is different from the structure of other film layers, and the 100% tensile modulus of the material of the adhesive layer 20 is less than or equal to 2.5N/mm2E.g. 2N/mm2、1.8N/mm2、1.5N/mm2、1N/mm2、0.8N/mm2. For example, the low-modulus aliphatic sulfonic acid type waterborne polyurethane material is synthesized by using polyether/polyester polyol, has good adhesion to other high polymer materials, and has flexibility.
In some embodiments, the substance of the bonding layer 20 has a glass transition temperature of, for example, 0 ℃ or lower, further-10 ℃ or lower, and in other embodiments, a number average molecular weight of, for example, 200000g/mol or lower, for example 100000g/mol, 80000g/mol, 50000g/mol, 20000 g/mol. Further, when the substance molecular weight distribution of the adhesive layer 20 is broad, the content ratio of the component having the number average molecular weight of, for example, 50000 or less should be in the range of 10 to 100%, for example, 40%, 60%. The adhesive layer within the above range has low modulus and soft characteristics and has a desired adhesiveness, so that when it is used as a middle layer of the polyurethane condom 100, the film layers on both sides can be closely adhered without delamination, and respective properties of the film layers on both sides can be sufficiently exhibited.
As shown in fig. 2, the adhesive layer 20 is a middle layer, which closely adheres the film layers on both sides thereof, and includes at least one layer, such as one layer, two layers, three layers, etc., each of which is laminated with other material film layers on both sides. The adhesive layer 20 may for example have a thickness of 0.1-30 μm, further 0.1-20 μm, such as 1 μm, 2 μm, 3 μm, 5 μm, 10 μm, 15 μm, based on the adhesive layer 20 to obtain a low modulus, high adhesion and the desired properties of the polyurethane condom 100. In addition, since the material of the adhesive layer 20 has a low modulus and is inherently weak, the ratio of the thickness of the adhesive layer 20 to the total thickness of the polyurethane condom 100 is less than or equal to 40%, and further less than or equal to 35%, such as 30%, 25%.
As shown in fig. 2, a second film layer 30 is disposed on the adhesive layer 20, and the second film layer 30 includes natural rubber or polyisoprene resin.
As shown in fig. 2, the second film layer 30 may have a thickness of, for example, 0.1 to 30 μm, such as 1 μm, 2 μm, 3 μm, 5 μm, 10 μm, 15 μm, 20 μm, based on the polyurethane condom 100 to obtain a desired thickness and a desired interlayer adhesion.
As shown in fig. 3, the present invention also discloses another embodiment of the polyurethane condom 100, wherein the polyurethane condom 100 comprises: the film comprises a first polyurethane film layer 10, a first adhesive layer 21, a second film layer 30, a second adhesive layer 22 and a third film layer 40.
As shown in fig. 3, the adhesive layer includes a first adhesive layer 21 and a second adhesive layer 22, which are made of, for example, the same resin, and the first polyurethane film 10 and the second polyurethane film 30 are respectively laminated on both sides of the first adhesive layer 21, and the second film 30 and the third film 40 are respectively laminated on both sides of the second adhesive layer 22.
As shown in fig. 3, the first polyurethane film layer 10, the first adhesive layer 21, and the second polyurethane film layerThe film layer 30 and the second adhesive layer 22 may be the same as those described above. The third film layer 40 is located on the second film layer 20 and has the same structure as the first polyurethane film layer 10, and in a specific embodiment, for example, the polyurethane condom 100 has a thickness of 0.010-0.080mm and is soaked in 50-70 ℃ lye for 1-10min without delamination: the first polyurethane film layer 10 and the third film layer 40 have the same structure, and the tensile strength is greater than or equal to 25MPa, for example, 35 MPa; the adhesive layers 21 and 22 are made of aliphatic sulfonic acid type aqueous polyurethane resin with the molecular weight of 30000g/mol and the 100 percent tensile modulus of less than or equal to 2.5N/mm2E.g. 1.8N/mm2The polyurethane of (a); the second film layer 30 is polyisoprene resin and has a 100% tensile modulus of 1N/mm or less2E.g. 0.8N/mm2。
The polyurethane condom may be formed with more structural layers, such as three-layer structure of natural rubber or polyisoprene resin layer + bonding layer + polyurethane film layer, five-layer structure of natural rubber or polyisoprene resin layer + bonding layer + polyurethane film layer + bonding layer + natural rubber or polyisoprene resin layer, five-layer structure of polyurethane film layer + bonding layer + natural rubber or polyisoprene resin layer + bonding layer + polyurethane film layer, etc., without limitation, it should be understood that any structure in which the bonding layer 20 is used as the middle layer of the polyurethane condom 100 and the film layers on both sides thereof are compounded is within the scope of the present invention.
As shown in FIG. 4, the present invention also provides a process for preparing the composite polyurethane condom with adhesive layer, wherein the preparation method of the pure polyurethane condom includes, but is not limited to, the following steps S1-S4.
S1, impregnating polyurethane resin and drying to form a first polyurethane film layer;
s2, dipping adhesive layer material on the first polyurethane film layer and drying to form an adhesive layer;
s3, dipping natural rubber or polyisoprene resin on the bonding layer and drying to form a second film layer;
and S4, dipping a release agent on the second film layer, and drying, demolding and electrically detecting to obtain the composite polyurethane condom with the bonding layer.
In the process of the steps S1-S4 as described above, for example, a glass mold may be used, and the surface of the glass mold is heated to 20-50 deg.C, e.g., 35 deg.C, 40 deg.C, impregnated with a polyurethane resin, and dried, e.g., at 80-120 deg.C, e.g., 90 deg.C, 100 deg.C, 110 deg.C; impregnating the adhesive layer, and drying at 70-110 deg.C, such as 80 deg.C, 90 deg.C, 100 deg.C; impregnating natural rubber or polyisoprene resin, and drying at 100-120 deg.C, such as 110 deg.C; after crimping, the polyurethane condom is dried at the temperature of 100-.
The present invention will be described in more detail with reference to specific examples.
Examples of the invention
Example 1
The composite polyurethane condom comprises the following raw materials: modulus of polyurethane resin 2.5N/mm2Tensile strength 55 MPa; bonding layer: aliphatic sulfonic acid type waterborne polyurethane resin with modulus of 1.0N/mm2The tensile strength is 5 MPa; polyisoprene (PI) resin.
Cleaning a glass mold, heating the surface of the mold to 30 ℃, soaking polyurethane resin, controlling the thickness to be 0.013mm, and drying at 90 ℃; dipping the bonding layer, controlling the thickness to be 0.002mm, and drying at 80 ℃; impregnating polyisoprene resin with the thickness of 0.015mm, and drying at 100 ℃; and (3) drying the product after edge curling at 120 ℃, soaking a separant, drying at 80 ℃, demolding, and then carrying out electric detection, internal wrapping and external wrapping to prepare the polyurethane condom 1 with the polyurethane film layer, the polyurethane film layer and the polyisoprene film layer. Through detection, the polyurethane condom 1: 0.03mm in thickness, 0.8N/mm2 in 100% modulus, 2.0kPa burst pressure, 25L burst pressure, 40N/mm2 in tensile strength, and no delamination occurred after 1 minute of soaking in 50 ℃ sodium hydroxide solution.
Example 2
The composite polyurethane condom comprises the following raw materials: modulus of polyurethane resin 2.0N/mm2Tensile strength of 50 MPa; bonding layer: aliphatic sulfonic acid type waterborne polyurethane resin with modulus of 0.8N/mm2Tensile strength of 3 MPa; polyisoprene (PI) resin.
Cleaning a glass mold, heating the surface of the mold to 40 ℃, soaking natural rubber, controlling the thickness to be 0.010mm, and drying at 110 ℃; soaking N with the thickness controlled to be 0.003mm, and drying at 100 ℃; soaking in polyurethane resin with thickness of 0.010mm, and oven drying at 110 deg.C; soaking in 0.003mm of N, and drying at 100 deg.C; soaking natural rubber with thickness of 0.010mm, and oven drying at 120 deg.C; and (3) drying the curled product at 140 ℃, soaking the separant, drying the product at 80 ℃, demolding, and then carrying out electric detection, internal wrapping and external wrapping to prepare the polyurethane condom 2 with the natural rubber layer, the bonding layer, the polyurethane film layer, the bonding layer and the natural rubber film layer. After detection, the polyurethane condom 2: 0.036mm in thickness, 0.8N/mm2 in 100% modulus, 2.0kPa burst pressure, 30L burst pressure, 40N/mm2 in tensile strength, and no delamination after 3 minutes of immersion in a sodium bicarbonate solution at 60 ℃.
Example 3
The composite polyurethane condom comprises the following raw materials: modulus of polyurethane resin 1.4N/mm2Tensile strength 40 MPa; bonding layer: aliphatic sulfonic acid type waterborne polyurethane resin with modulus of 1.0N/mm2The tensile strength is 5 MPa; polyisoprene (PI) resin.
Cleaning a glass mold, heating the surface of the mold to 40 ℃, soaking polyurethane resin, controlling the thickness to be 0.013mm, and drying at 110 ℃; soaking N with the thickness controlled to be 0.002mm, and drying at 100 ℃; impregnating polyisoprene resin, controlling the thickness to be 0.010mm, and drying at 110 ℃; soaking N with the thickness controlled to be 0.002mm, and drying at 100 ℃; soaking polyurethane resin with the thickness controlled to be 0.013mm, drying at 120 ℃, soaking a separant, drying at 80 ℃, demolding, performing electric detection, internal wrapping and external wrapping to prepare the polyurethane condom 3 with the polyurethane film layer + the bonding layer + the polyisoprene film layer + the bonding layer + the polyurethane film layer. The detection shows that the thickness is 0.04mm, the 100 percent modulus is 1.0N/mm2, the bursting pressure is 2.6kPa, the bursting pressure is 20L, the tensile strength is 52N/mm2, and delamination does not occur after the mixture is soaked in a potassium hydroxide solution at the temperature of 60 ℃ for 5 minutes.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a take compound polyurethane condom of bonding layer which characterized in that includes at least:
a first polyurethane film layer;
an adhesive layer on the first polyurethane film layer;
a second film layer on the adhesive layer;
the second film layer comprises natural rubber or polyisoprene resin;
the adhesive layer comprises 0-100 wt% of polar component hydrophilic to polyurethane, 0-100 wt% of non-polar component hydrophilic to natural rubber or polyisoprene resin, and 0-100 wt% of polar-non-polar component;
the adhesive layer has a thickness of 0.1-30 μm;
the polyurethane condom has a thickness of 0.010-0.080 mm.
2. The adhesive-layered composite polyurethane condom of claim 1, wherein the polyurethane condom is selected from at least one of the following:
the bursting pressure is more than or equal to 1 kPa;
the blasting volume is more than or equal to 5L;
100% modulus less than 2.5N/mm 2.
3. The composite polyurethane condom with adhesive layer according to claim 1, wherein the polar component is selected from any one of polyurethane, neoprene, polyvinyl acetate, acrylonitrile-butadiene-styrene, vinyl acetate-ethylene copolymer resin, polyacrylate, polyvinyl chloride, protein, starch, cellulose, epoxy resin, or any combination thereof.
4. The composite polyurethane condom with adhesive layer according to claim 1, wherein the non-polar component is selected from one or any combination of natural rubber, polyolefins, silicone resins, butyl rubber, styrene-butadiene rubber, ethylene-propylene-diene rubber, polystyrenes, polyisoprene, polyesters, rosin resins, terpene resins, rosin resins and their extensions.
5. The composite polyurethane condom with adhesive layer according to claim 1, wherein the polar-nonpolar component is selected from organically modified polar or nonpolar polymeric materials.
6. The composite polyurethane condom with adhesive layer according to claim 5, wherein the organic modification is selected from any one of silicone modification, organic fluorine modification, silane modification, acrylate copolymerization modification, vinyl modification, aromatic monomer modification, polyether modification, amination, carboxylation, hydroxylation, sulfonation and polymerization modification or any combination thereof.
7. The utility model provides a take compound polyurethane condom of bonding layer which characterized in that includes at least:
a first polyurethane film layer;
a first adhesive layer on the first polyurethane film layer;
a second film layer on the adhesive layer,
the second adhesive layer is positioned on the second film layer and has the same structure as the first adhesive layer;
the third polyurethane film layer is positioned on the second film layer, and the third polyurethane film layer and the first polyurethane film layer have the same structure;
the second film layer comprises natural rubber or polyisoprene resin;
the first adhesive layer comprises 0-100 wt% of polar component of polyurethane-philic, 0-100 wt% of non-polar component of natural rubber-philic or polyisoprene resin, 0-100 wt% of polar-non-polar component;
the first adhesive layer has a thickness of 0.1-30 μm;
the first adhesive layer has a 100% tensile modulus of 2.5N/mm or less2；
The polyurethane condom has a thickness of 0.010-0.080 mm.
8. The preparation method of the composite polyurethane condom with the adhesive layer is characterized by at least comprising the following steps:
impregnating polyurethane resin and drying to form a first polyurethane film layer;
dipping an adhesive layer substance on the first polyurethane film layer, and drying to form an adhesive layer;
dipping natural rubber or polyisoprene resin on the bonding layer, and drying to form a second film layer;
dipping a release agent on the second film layer, and drying, demolding and electrically detecting to obtain the composite polyurethane condom with the bonding layer;
the adhesive layer material comprises 0-100 wt% of polar component hydrophilic to polyurethane, 0-100 wt% of non-polar component hydrophilic to natural rubber or polyisoprene resin, and 0-100 wt% of polar-non-polar component;
the adhesive layer has a thickness of 0.1-30 μm;
the polyurethane condom has a thickness of 0.010-0.080 mm.
Priority Applications (19)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010431395.6A CN111748110A (en) | 2020-05-20 | 2020-05-20 | Composite polyurethane condom with adhesive layer and preparation method thereof |
| CN202210689196.4A CN115068196A (en) | 2020-05-20 | 2020-05-20 | Composite polyurethane condom with adhesive layer and preparation method thereof |
| JP2022559542A JP2023527506A (en) | 2020-03-31 | 2020-06-16 | Polyurethane condom molding mold, mold manufacturing method and usage method |
| CN202080099166.7A CN115916500A (en) | 2020-03-31 | 2020-06-16 | Mold for forming polyurethane condom and preparation method and using method thereof |
| US17/916,110 US20230149206A1 (en) | 2020-03-31 | 2020-06-16 | Mold for molding polyurethane condom, and preparation method and use method for mold |
| AU2020440312A AU2020440312A1 (en) | 2020-03-31 | 2020-06-16 | Mold for molding polyurethane condom, and preparation method and use method for mold |
| PCT/CN2020/096323 WO2021196413A1 (en) | 2020-03-31 | 2020-06-16 | Mold for molding polyurethane condom, and preparation method and use method for mold |
| EP20928950.3A EP4129608A4 (en) | 2020-03-31 | 2020-06-16 | Mold for molding polyurethane condom, and preparation method and use method for mold |
| MX2022012118A MX2022012118A (en) | 2020-03-31 | 2020-06-16 | Mold for molding polyurethane condom, and preparation method and use method for mold. |
| CN202080099083.8A CN116194517A (en) | 2020-03-31 | 2020-10-22 | Polyurethane condom with adhesive layer and preparation method thereof |
| MX2022012120A MX2022012120A (en) | 2020-03-31 | 2020-10-22 | Polyurethane condom with adhesive layer and preparation method therefor. |
| CN202080099103.1A CN115867236A (en) | 2020-03-31 | 2020-10-22 | Pure polyurethane condom with adhesive layer and preparation method thereof |
| EP20928974.3A EP4129252A4 (en) | 2020-03-31 | 2020-10-22 | Polyurethane condom with adhesive layer and preparation method therefor |
| PCT/CN2020/122617 WO2021196570A1 (en) | 2020-03-31 | 2020-10-22 | Polyurethane condom with adhesive layer and preparation method therefor |
| EP20928568.3A EP4129251A4 (en) | 2020-03-31 | 2020-10-22 | Pure polyurethane condom having adhesive layer, and preparation method therefor |
| MX2022012119A MX2022012119A (en) | 2020-03-31 | 2020-10-22 | Pure polyurethane condom having adhesive layer, and preparation method therefor. |
| PCT/CN2020/122616 WO2021196569A1 (en) | 2020-03-31 | 2020-10-22 | Pure polyurethane condom having adhesive layer, and preparation method therefor |
| US17/916,164 US20230157862A1 (en) | 2020-03-31 | 2020-10-22 | Pure polyurethane condom having adhesive layer and preparation method therefor |
| US17/916,135 US20230414401A1 (en) | 2020-03-31 | 2020-10-22 | Pure polyurethane condom having adhesive layer, and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010431395.6A CN111748110A (en) | 2020-05-20 | 2020-05-20 | Composite polyurethane condom with adhesive layer and preparation method thereof |
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| CN202210689196.4A Division CN115068196A (en) | 2020-05-20 | 2020-05-20 | Composite polyurethane condom with adhesive layer and preparation method thereof |
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| CN111748110A true CN111748110A (en) | 2020-10-09 |
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| CN202010431395.6A Pending CN111748110A (en) | 2020-03-31 | 2020-05-20 | Composite polyurethane condom with adhesive layer and preparation method thereof |
| CN202210689196.4A Pending CN115068196A (en) | 2020-05-20 | 2020-05-20 | Composite polyurethane condom with adhesive layer and preparation method thereof |
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| CN202210689196.4A Pending CN115068196A (en) | 2020-05-20 | 2020-05-20 | Composite polyurethane condom with adhesive layer and preparation method thereof |
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| CN (2) | CN111748110A (en) |
Cited By (2)
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| WO2021196570A1 (en) * | 2020-03-31 | 2021-10-07 | 兰州科天健康科技股份有限公司 | Polyurethane condom with adhesive layer and preparation method therefor |
| WO2022057856A1 (en) * | 2020-09-21 | 2022-03-24 | 兰州科时西西里健康科技有限公司 | High-blasting-volume waterborne polyurethane condom and preparation method therefor |
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| CN103692733A (en) * | 2013-12-10 | 2014-04-02 | 上海强睿博化工有限公司 | Full-synthetic or composite water-based polyurethane condom |
| CN111072902A (en) * | 2019-12-30 | 2020-04-28 | 眉山尤博瑞新材料有限公司 | Multilayer condom containing modified polyurethane raw material and preparation method thereof |
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| CN103692733A (en) * | 2013-12-10 | 2014-04-02 | 上海强睿博化工有限公司 | Full-synthetic or composite water-based polyurethane condom |
| CN111072902A (en) * | 2019-12-30 | 2020-04-28 | 眉山尤博瑞新材料有限公司 | Multilayer condom containing modified polyurethane raw material and preparation method thereof |
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| WO2021196570A1 (en) * | 2020-03-31 | 2021-10-07 | 兰州科天健康科技股份有限公司 | Polyurethane condom with adhesive layer and preparation method therefor |
| WO2022057856A1 (en) * | 2020-09-21 | 2022-03-24 | 兰州科时西西里健康科技有限公司 | High-blasting-volume waterborne polyurethane condom and preparation method therefor |
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| CN115068196A (en) | 2022-09-20 |
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Effective date of registration: 20210325 Address after: 730000 Ketian water science and Technology Industrial Park, 3949 Kunlun Mountain Avenue, Lanzhou New District, Lanzhou City, Gansu Province Applicant after: Lanzhou Keshi Sicily Health Technology Co.,Ltd. Address before: 730000 Ketian water science and Technology Industrial Park, 3949 Kunlun Mountain Avenue, Lanzhou New District, Lanzhou City, Gansu Province Applicant before: LANZHOU KETIAN HEALTH TECHNOLOGY Co.,Ltd. |
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Application publication date: 20201009 |