TWM543046U - Multi-functional polyurethane (TPU) thin film cover capable of being waterproof and moisture permeable - Google Patents

Description

Waterproof and moisture permeable multifunctional polyurethane film cover

The present invention is a polyurethane elastomer film composition; in particular, a polyurethane material having waterproof, moisture permeable, antibacterial and antistatic properties is subjected to special solvent olefin release, so that various film sleeve molds can be immersed in the polyurethane olefin release liquid. It evenly covers the surface of the mold and then passes through the drying process to form a waterproof and moisture permeable multifunctional polyurethane film sleeve of the film sleeve.

At present, a large number of film sleeves are used on the market, such as latex film sleeves for medical personnel to block and protect; latex film sleeves for industrial antifouling and waterproofing; latex film sleeves for cleaning and cleaning generally used; Rubber film sleeves, etc. Since the moisture permeability of the conventional latex or rubber film sleeve is very poor, when the user wears the latex film for a period of time, it will accumulate in the glove due to the perspiration of the wearer, resulting in dampness and sultry heat. Comfortable, and the skin of the wearer is easily swollen, broken or allergic after being soaked for a long time, and it is easy to wet bacteria. Therefore, the film cover of latex or rubber is not suitable for long-term wear.

Furthermore, the latex or rubber film sleeve also has problems such as easy generation of static electricity, difficulty in using the touch screen in the wearable area, and difficulty in decomposition of the material. Natural rubber latex is made from the milky juice of Hevea brasiliensis. Some of the proteins may cause allergic reactions in some people, including allergens caused by direct contact with the skin, and allergies. The original glove dust particles cause allergies caused by breathing into the human body, so it is quite inconvenient to use.

In addition, as disclosed in Japanese Patent Publication No. 201315399, "Waterproof and moisture permeable sleeve and manufacturing method thereof", the method for producing the waterproof moisture permeable sleeve provides a mold which has a predetermined shape; the mold is immersed in a polyurethane ( In the polyurethane, PU), a first film is formed on the surface of the mold; the first film is dried, and the first film is peeled off from the mold to obtain a predetermined shape. Waterproof and moisture permeable sleeve. Wherein, the polyurethane-containing compound comprises silica, porous polysilicon, a solvent, or a combination thereof, and the solvent is dimethyl formaldehyde (DMF), Toluene, acetone, methyl ethyl ketone (MEK), ethyl acetate (EAC), butyl acetate (BAC), water, or a combination thereof.

However, after the creator of the present invention actually tested the waterproof moisture permeable sleeve, it was found that the waterproof and moisture permeable sleeve made by the method and the material had too thick thickness, poor elasticity and insufficient strength, and would be broken when pulled with a little force. Moreover, the thickness of the glove is also unsatisfactory, so it is a failed polyurethane (PU) film sleeve, and no one has been developed on the market and in various literatures, and has waterproof, high elasticity and high strength. Multi-functional polyurethane (PU) film cover with high moisture permeability.

Therefore, there are currently three kinds of PU gloves sold on the market. The first one is to take the general cloth gloves to the immersion PU to form a composite glove with a surface covered with PU. The disadvantage is that the thickness is too thick and has no elasticity. Therefore, the use is limited and cannot be used as a film sleeve; the second is to pre-press a PU flat film, and then the PU flat film is cut, and the cut PU film is cut by a high-frequency hot press bonding method. Adhesive to other fabrics, the disadvantages are high processing cost, poor structural strength, inconsistent elasticity, very ugly appearance, environmental protection, inconsistent feeling when worn, uncomfortable adhesiveness, and only the PU material in some positions; The third type is to use two high-frequency hot-press bonding methods to bond two pieces of cut PU flat film into a PU glove. The disadvantages are high processing cost, poor structural strength, and ergonomic and sticky when worn. Feeling. Therefore, the composite PU gloves which are not integrally formed have poor practicability, low consumer acceptance, high manufacturing cost, and no economic benefit.

To this end, the creator created the case in response to the problems existing in the various film sleeves.

The purpose of this creation is to use the polyethylene glycol structure contained in the polyurethane casing to ensure that the casing can effectively prevent the infiltration of liquid water, water vapor, and solvent resistance, and supplemented with additives of other polyurethane materials. The cover body has the multi-functional effect of high elasticity, high strength, antibacterial, anti-static and tonable, and solves the problem that the conventional latex film sleeve or the rubber film sleeve cannot penetrate moisture, is easy to wet bacteria, and generates static electricity; This creation utilizes a mold and immersion technology with an atomized surface to create an integrally formed film sleeve, and allows the film sleeve to be easily released from the mold and has a dry and comfortable feeling when worn, and is solved by a conventional latex or rubber material. The problem of film sleeves and composite PU gloves.

The waterproof and moisture permeable multifunctional polyurethane film sleeve of the present invention comprises at least one set of the body, and the set system is integrally formed by a polyurethane raw material containing a polyethylene glycol structure, the sleeve body is provided with an opening, and a receiving groove is arranged in the opening. The inner side of the sleeve body is provided with an atomizing surface to increase the dry comfort of the user wearing the sleeve body; the sleeve system is made of a mold having an atomizing surface, and the polyurethane dilution material containing the polyethylene glycol structure is utilized by the immersion technique. It is then dried.

The waterproof and moisture permeable multifunctional polyurethane film sleeve of the present invention, wherein the polyurethane dilution raw material containing the polyethylene glycol structure is diluted by an oil dilution solvent, which is mixed with a low vapor pressure solvent and a high vapor pressure solvent. The low vapor pressure solvent is obtained by using dimethylformamide, a mixed solvent containing dimethylformamide or other low vapor pressure solvent, and the high vapor pressure solvent is obtained by containing methyl ethyl ketone and/or toluene. Mixed solvent, or other high vapor pressure solvent.

The waterproof and moisture permeable multifunctional polyurethane film sleeve of the present invention, wherein the polyurethane dilution raw material containing the polyethylene glycol structure is diluted with pure water.

The waterproof and moisture permeable multifunctional polyurethane film sleeve of the present invention, wherein the sleeve system is manufactured by at least one immersion drying operation procedure to increase the thickness of the sleeve body, and the sleeve body has better tensile strength and resistance. Tear strength and water pressure stability.

The waterproof and moisture permeable multifunctional polyurethane film sleeve of the present invention, wherein the polyurethane raw material is added with any of eucalyptus oil, cerium oxide powder, hardener of isocyanate group (-N=C=O), titanium dioxide powder, antibacterial agent and dyeing agent. The combination of the above combinations to enhance the versatility of the sleeve.

In order to further understand the creation, the embodiment of the optimal waterproof and moisture permeable multifunctional polyurethane film sleeve is shown in Figures 1 and 2, and includes at least:

The sleeve 1 is a film sleeve integrally formed of a polyurethane (PU) material containing a polyethylene glycol (PEG) structure. Since the polyethylene glycol has hydrophilic moisture permeability, the polyethylene glycol is used. The polyurethane raw material has the high moisture permeability effect of the waterproof polyurethane sleeve 1 and can maintain the good tensile, tear resistance, elasticity and the like of the polyurethane material, and the polyurethane material is a decomposable material, so the sleeve is made Body 1 achieves the effect of environmental protection. As shown in FIG. 1, the sleeve body 1 is provided with an opening 10, and a receiving groove 11 is disposed in the opening 10, so that the user can penetrate the wearing portion of the sleeve body 1 from the opening 10 and wear it for disposal. The inside of the casing 1 is provided with a groove 11; as shown in FIG. 2, the inside of the casing 1 is provided with an atomizing surface 12 to increase the dry comfort of the user wearing the casing 1; Shoe covers, headgear, finger sleeves, joint sleeves, arm sleeves, leg sleeves, condoms, clothes, trousers or other body-worn sleeves are all indispensable.

The polyurethane (PU) raw material may be a combination of any one or more of a silicone oil, a silica powder, a hardener of an isocyanate group (-N=C=O), a titanium dioxide powder, an antibacterial agent, and a coloring agent. Additives to enhance the versatility of the casing 1, depending on the needs. Among them, the addition of silicone oil to the polyurethane raw material can provide the sleeve with a smooth feeling and prevent the adhesion between the films, and has a release effect between the sleeve 1 and the mold, which contributes to the release of the sleeve 1 Among them, the addition of cerium oxide powder to the polyurethane raw material can provide the dry feeling of the sleeve 1, prevent the adhesion between the sleeves 1 and eliminate the surface of the sleeve 1; wherein the isocyanate is added to the polyurethane raw material. The hardener of the base (-N=C=O) can further strengthen the physical properties and mechanical strength of the sleeve 1; wherein the titanium dioxide is a good electron transport material, and the addition of titanium dioxide to the polyurethane raw material can produce an antistatic effect. The user can wear the sleeve 1 to directly operate the touch interface, and the titanium dioxide can make the sleeve 1 white, so that the sleeve 1 is more beautiful and does not need to add a dye; wherein an antibacterial agent is added to the polyurethane raw material. The sleeve 1 can have the effect of inhibiting the growth of bacteria and mold, and the antibacterial agent can also reduce the chance of medical and health workers to indirectly contact with germs and molds to contain polyethylene. The casing 1 made of the polyurethane material of the alcohol structure can discharge water vapor, and the large amount of hot gas taken away by the evaporation of the water vapor can keep the inside of the casing 1 dry and reduce the growth of bacteria and mold, supplemented by antibacterial. The action of the agent can minimize the growth of bacteria and mold; among them, the coloring agent can be added to the polyurethane raw material to arrange various sleeves 1 of different sizes, shapes, thicknesses and functions into specific colors according to different use requirements. To increase the identity of the sleeve 1.

The first step of the method of preparing the sleeve 1 is to add the polyurethane (PU) raw material of the polyether polyol containing a polyethylene glycol (PEG) structure to an olefin releasing solvent to form a polyurethane olefin releasing liquid; It can be an oily dilution solvent or pure water. The oily dilution solvent is prepared by mixing a low vapor pressure solvent and a high vapor pressure solvent; wherein the low vapor pressure solvent is obtained by using dimethylformamide (DMF), a mixed solvent containing dimethylformamide or the like. The vapor pressure solvent makes the polyurethane olefin release liquid in the immersion operation not cause uneven thickness, agglomeration, pinhole, etc. due to rapid evaporation of the olefin solvent, and uniformly distributes the polyurethane raw material on the surface of the mold; The vapor pressure solvent is a mixed solvent containing methyl ethyl ketone (MEK) and/or toluene (TOL), or other high vapor pressure solvent to assist the sleeve 1 to quickly bake the diluted solvent contained in the oven drying operation. Dry removal.

Further, the mold of the sleeve body 1 is disposed, and the mold has an atomizing surface. Since the atomized surface of the mold is rough, the sleeve 1 after drying can reduce the contact area with the mold due to material shrinkage, thus The finished product of the sleeve is easy to demold (so that the ultra-thin film sleeve having a thickness of 0.01 mm to 0.1 mm can be smoothly demolded), and the atomized surface of the mold is used to form the atomizing surface 12 on the inner side of the sleeve 1 . To reduce the contact area between the sleeve 1 and the skin, to achieve a dry and comfortable wearing effect, and to allow the user to wear for a long time without feeling uncomfortable (if a smooth surface mold is used, the polyurethane film formed on the smooth surface will be The mold is sticky, so that the finished product of the sleeve has the disadvantage of being sticky and not easy to demould, and it has a sticky feeling when worn. The mold is made of metal, wood, ceramic, or other material that can be made into a mold.

The second step of the method for manufacturing the sleeve 1 is to immerse the mold 2 in the polyurethane olefin release liquid, so that the surface of the mold 2 uniformly covers the polyurethane olefin release liquid; the immersion operation of the mold 2 can immerse the mold culvert into the aliquot. In the tank with polyurethane olefin release liquid, the mold is slowly raised, the surface of the mold is evenly covered with a layer of polyurethane olefin release liquid, and the excess polyurethane olefin release droplets are flowed back into the tank, and then the mold is transferred to the mold. The direction opposite to the immersion direction, and slowly rotating, the polyurethane olefin release liquid flows in the opposite direction, and the surface of the mold is leveled and covered more uniformly, thereby avoiding the problem of inconsistent thickness of the sleeve finished product.

The third step of the method for manufacturing the sleeve 1 is to dry and demold the mold uniformly covering the polyurethane emulsion to obtain the sleeve 1.

In addition, if it is necessary to increase the thickness of the sleeve 1 so that the sleeve 1 has better tensile strength, tear strength and water pressure stability, the second step and the third step can be repeated, and the plurality of times can be repeated. The immersion and drying process can obtain a casing 1 having a thick thickness, high tensile strength, high tear strength and high water pressure stability. It is worth mentioning that the waterproof and moisture-permeable multifunctional polyurethane film sleeve of the present invention has a thicker thickness of the sleeve 1 which is made by multiple immersion and drying processes, and the moisture permeability thereof is not greatly increased due to the increase in thickness. The reduction and the effect of the thickness on the moisture permeability of the film sleeve, the waterproof and moisture permeable multifunctional polyurethane film sleeve can be applied in a wider range and more practical. According to the actual test by the creator, the film thickness of 0.01mm~0.1mm can reach the level of JIS L1099 B1 test method above 15000 (g/m ₂ /24hr) to ensure the sweat from the skin. The outside of the sleeve 1 is discharged to keep the skin dry. In addition, regarding the waterproof property of the waterproof and moisture permeable multifunctional polyurethane film cover of the present invention, the film cover having a thickness of 0.01 mm to 0.1 mm can be tested by the creator by the creator, and the water pressure resistance can reach JIS L1092B test method 10000 (mm- H2O) The above standards are used to achieve high water pressure resistance standards, allowing the film cover to be used in various industrial, medical and general applications. Moreover, the waterproof and moisture permeable multifunctional polyurethane film sleeve of the present invention also has the anti-solvent property, which allows the user to achieve the effect of blocking the solvent erosion during the wearing process, and avoids the direct erosion of the skin by the solvent.

Therefore, the waterproof and moisture permeable multifunctional polyurethane film sleeve of the present invention utilizes the polyethylene glycol structure contained in the polyurethane sleeve 1, so that the sleeve 1 can surely achieve the effects of preventing liquid water from infiltrating, permeable to water vapor, and anti-solvent, and then With the addition of other polyurethane materials, the sleeve 1 can have high elasticity, high strength, antibacterial, antistatic, and versatile functions; further, the creation uses a mold and culvert with an atomizing surface. The dip technology is used to manufacture an integrally formed film sleeve, and the film sleeve product can be easily released from the mold and has a dry and comfortable feeling when worn, and has the best practicality and economic benefit, and is a component of the present invention.

The above-mentioned embodiments or the drawings are not intended to limit the scope of the present invention, and any suitable variations or modifications of the ordinary skill in the art should be considered as not departing from the scope of the invention.

1‧‧‧ body

10‧‧‧ openings

11‧‧‧ 容 槽

12‧‧‧Atomized surface

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an embodiment of a glove for waterproofing and moisture permeable multifunctional polyurethane film cover of the present invention. Figure 2 is a cross-sectional view taken along line A-A of Figure 1;

1‧‧‧ body

10‧‧‧ openings

11‧‧‧ 容 槽

12‧‧‧Atomized surface

Claims (12)

The utility model relates to a waterproof and moisture permeable multifunctional polyurethane film sleeve, which comprises at least a sleeve body, which is a film sleeve formed by integrally forming a polyurethane raw material containing a polyethylene glycol structure, wherein the sleeve body is provided with an opening, and a receiving groove is arranged in the opening. The inner side of the sleeve body is provided with an atomizing surface to increase the dry comfort of the user wearing the sleeve; the sleeve system will contain a polyurethane dilution material containing a polyethylene glycol structure, and the mold is provided with an atomizing surface to immerse the technique. It is then dried. The waterproof and moisture permeable multifunctional polyurethane film sleeve according to the first aspect of the patent application, wherein the polyurethane dilution raw material containing the polyethylene glycol structure is diluted by an oil dilution solvent, which is a low vapor pressure solvent and a high solvent. Vapor pressure solvent mixture. The waterproof and moisture permeable multifunctional polyurethane film sleeve according to claim 2, wherein the low vapor pressure solvent is dimethylformamide or a mixed solvent containing dimethylformamide. The waterproof and moisture-permeable multifunctional polyurethane film sleeve according to the second aspect of the invention, wherein the high vapor pressure solvent is a mixed solvent containing methyl ethyl ketone or toluene or a mixed solvent of methyl ethyl ketone and toluene. The waterproof and moisture permeable multifunctional polyurethane film sleeve according to the first aspect of the patent application, wherein the polyurethane dilution raw material containing the polyethylene glycol structure is diluted with pure water. The waterproof and moisture permeable multifunctional polyurethane film sleeve according to any one of claims 1 to 5, wherein the sleeve system is manufactured by at least one immersion and drying operation procedure to increase the thickness of the sleeve and The casing has better tensile strength, tear strength and water pressure stability. The waterproof and moisture permeable multifunctional polyurethane film sleeve according to any one of claims 1 to 5, wherein the polyurethane raw material is added with eucalyptus oil to make the sleeve have a slick feel, prevent adhesion between the films, and release the auxiliary sleeve. The effect. The waterproof and moisture-permeable multifunctional polyurethane film sleeve according to any one of claims 1 to 5, wherein the polyurethane raw material is added with cerium oxide powder, so that the sleeve has a dry hand feeling and prevents sticking between the sleeves. And extrude the surface of the sleeve. The waterproof and moisture-permeable multifunctional polyurethane film sleeve according to any one of claims 1 to 5, wherein a hardener containing an isocyanate group (-N=C=O) is added to the polyurethane raw material to further strengthen the sleeve. Physical properties and mechanical strength. The waterproof and moisture permeable multifunctional polyurethane film sleeve according to any one of claims 1 to 5, wherein the polyurethane raw material is added with titanium dioxide, so that the sleeve body has an antistatic effect and allows the user to wear the sleeve body. The touch interface can be operated directly, and the sleeve is rendered white. The waterproof and moisture permeable multifunctional polyurethane film sleeve according to any one of claims 1 to 5, wherein the polyurethane raw material is added with an antibacterial agent, so that the sleeve has an effect of inhibiting growth of bacteria and mold. The waterproof and moisture permeable multifunctional polyurethane film sleeve according to any one of claims 1 to 5, wherein the polyurethane raw material is added with a coloring agent, so that the sleeve is blended into a specific color, and the identification of the casing is increased.