JPS6218252A - Composite laminated fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a fabric that prevents water from entering while facilitating the evaporation of moisture from the body, that is, unlike conventional rubberized fabrics, it is waterproof and moisture permeable. The invention relates to a fabric that does not confuse humans with its inherent stuffiness, while exhibiting excellent heat retention in addition to the above-mentioned waterproof and moisture permeable properties in cold environments.

[Prior art and its problems]

In recent years, there has been rapid development of multifunctional composite laminated fabrics made by combining fiber base materials and resins.

In order to obtain fabrics that have both moisture permeability, waterproofness, and heat retention, a resin in which metal powder such as aluminum is kneaded is coated with dots of gravure resin on top of a microporous film layer formed by dry or wet coating. There are those that are coated, and those that are wet-coated with a polyurethane polymer mixed with metal such as aluminum to form a microporous film containing metal powder.

These products have a microporous coating that simultaneously provides moisture permeability and waterproofness, which are contradictory functions, and a resin layer containing metals such as aluminum blocks radiant energy (radiation) from the human body, increasing heat retention. ing.

However, those that knead metal powder into resin,
Increasing the content of metal powder reduces the film strength, so
The amount of metal powder contained in the film is generally 3 to 50% by weight, and the entire surface of the microporous film cannot be covered with metal.

Also, it is preferable to arrange the metal pieces within the coating in parallel to the coating, as this has a higher reflectance of radiant energy.
It is difficult to make the angle of this metal piece constant.

Therefore, this processing does not have a significant effect on improving heat retention.

[Purpose of the invention]

The purpose of the present invention is to improve the above-mentioned drawbacks, and to provide waterproof property that prevents water from entering from the outside into clothing, and to facilitate the evaporation of water from the human body. Ski wear, golf wear, etc. that have excellent heat retention that could not be achieved with conventional technology without reducing moisture permeability to a microporous film that simultaneously combines three contradictory functions. The company provides composite laminated fabrics that are suitable not only for sports clothing but also for casual wear.

[Structure of the invention]

The present invention has the following configuration to achieve the above object. That is, it is a composite laminated fabric having a microporous polyurethane resin membrane on at least one side of a fibrous base material, and a metal membrane laminated on a portion other than the pores existing on the surface of the membrane.

More specifically, the present invention, as illustrated in FIG.
A composite film consisting of a microporous polyurethane resin film 3 and a metal film 2 is present on the surface of the fiber base material 4, and the metal film 2 is present on the surface of the urethane resin film 3. The layers are laminated without blocking the many micropores in the layers.

Therefore, as a result, the small pores of the metal film 2 and the small pores of the microporous polyurethane resin film 3 are in communication, so moisture permeability hardly decreases and heat retention can be dramatically improved. It can be done.

The fiber base material 4 in the present invention may be in any form such as woven fabric, knitted fabric, web, non-woven fabric, etc., and there are no limitations on commonly used fiber materials.

Next, in the present invention, the film layer of the microporous polyurethane resin film 3 formed on at least one side of the fiber base material 4 has a large number of fine pores on its surface, and the pores are inside the film. Features that exhibit remarkable effects on waterproofness and moisture permeability by having a relatively large cavity communicating with the cavity, and having a communication hole in at least a part of the wall that partitions the adjacent cavities. has. In particular, it is particularly effective when the average cross-sectional diameter of the fine pores on the surface is 5 microns or less, preferably 1 micron or less, and the average cross-sectional diameter of the cavity is at least three times that of the fine pores.

Further, the metal film 2 according to the present invention is obtained by closely covering the surface of the microporous film with a thin metal film on the surface of the microporous film other than the small pores. As the method, a vapor deposition method such as vacuum vapor deposition, sputtering, ion blating, electron beam vapor deposition, etc. is used.

The metals used are aluminum and zinc.

Gold, silver, chromium, titanium, nickel, copper, tin.

Nichrome is common, but it is not limited to this. Among these, vacuum evaporation of aluminum is a preferred processing method because it is easy to process, relatively inexpensive, and has the ability to reflect almost all of the radiation energy.

The thickness of the metal thin film 2 is 0.01 to 0.3 micron, more preferably 0.03 to 0.1 micron. If it is too thin, the radiant energy reflection performance will be low, and if it is too thick, the small pores on the surface of the microporous film, which is a feature of the present invention, will be blocked, resulting in a decrease in moisture permeability.

The metal film laminated on the surface of the microporous film may be corroded and altered by acids, alkalis, water, etc., and may have poor durability such as wear resistance. In order to improve this, a polyacrylic acid polymer is applied on top of the metal film 2.

The metal can also be protected by topcoating it with a transparent resin such as polyurethane polymer. The thickness of this protective resin film 1 is five times or more that of the metal film 2, and more preferably 10 to 100 times that of the metal film 2.

If this thickness is too thin, it will not be possible to completely cover the metal film 2, and the abrasion resistance will be poor, making it impossible to sufficiently achieve the main purpose of protecting the metal film 2.

On the other hand, if it is too thick, the moisture permeability will decrease significantly. The protective resin film layer 1 may be a microporous film, but in the case of a microporous film, the transparency of the protective resin film layer is poor and the reflection performance of radiant energy is poor (which is not preferable. It is better to use a protective resin film layer that has an excellent non-porous film and moisture permeability.Even with a non-porous film, by selecting a resin and reducing the thickness of the protective resin film layer, it is possible to eliminate the need for a protective resin film layer. The moisture permeability does not decrease significantly compared to the previous fabrics coated with natural rubber or synthetic rubber, and has superior moisture permeability compared to conventional fabrics coated with natural rubber or synthetic rubber.

Here, the synthetic polymer having moisture permeability used for the protective resin film 1 has a thickness of 3 microns to 3 microns from the synthetic polymer solution.
A synthetic polymer having a moisture permeability of 3000 g/m for more than 24 hours when a dry non-porous film layer of 20 microns is formed is desirable.

For example, it is particularly effective when using a synthetic polymer selected from synthetic polymers mainly consisting of polyurethane polymers, polyacrylic acid polymers, and silicone polymers.

Any method can be used to form the protective resin film, but the adhesion between the microporous polyurethane resin film and the metal film is often weak, so it is preferable to form the metal film on the surface of the microporous resin film. After forming, the metal film is tensioned in the width direction and passed through a heat setter, and the metal film is cracked through a calender, etc., and then a solution of the synthetic polymer whose viscosity has been lowered is passed through a floating knife coater or other ordinary coating machine. Apply it evenly to the specified thickness and dry.

Furthermore, in fields where adhesion between a microporous resin film and a metal film is required, pattern deposition can be achieved by layering a mesh-like coarse fabric on top of the microporous resin film when forming the metal film. A metal film is formed on the surface of the microporous resin film in the form of dots, and the metal layer is cracked through the aforementioned heat setter or calender step, after which a low-viscosity synthetic polymer is applied and dried. .

When cracks are made in the metal film and a low-viscosity synthetic polymer is applied, the synthetic polymer enters the cracks in the metal film and reaches the surface of the microporous resin film beneath the metal film, where it forms a microporous resin film. Even if the adhesive strength between the microporous resin film and the metal film is weak, the adhesive strength between the microporous resin film, the metal film, and the protective resin film is strong. You can get something.

In addition, when there is a dot-shaped metal film on the microporous resin film, there is a part where the microporous resin film and the protective resin film are directly bonded to the cracks in the metal film mentioned above, which increases the adhesive strength. Obtainable.

When this protective resin film is calendered at a temperature close to the melting point of the resin, the resin is forced into the cracks in the metal film, resulting in higher adhesive strength.

A dot-shaped metal film has a slightly inferior effect of reflecting radiant energy compared to an entire surface metal film, but the bond between the microporous resin film, metal film, and protective resin film is strong enough to be used for various purposes. It is desirable to classify according to

The reflectance of infrared rays measured from the protective resin film side of the composite laminated fabric thus obtained is 0.5 or more, and a value of 0.7 or more can be obtained by adjusting the processing method to appropriate conditions.

The reflectance of conventional coatings made without aluminum powder incorporated therein is limited to about 0.45. Furthermore, the gloss of the protective resin film of the composite laminated fabric is not so high when viewed with the naked eye. To increase the visual gloss, this gloss is improved by incorporating metal powder into the protective resin film. However, if a large amount of metal powder is added, the metal film under the protective resin film layer will be hidden by the metal powder and the reflection effect of radiant energy will be reduced. Therefore, the amount of metal powder is preferably 2 to 30% by weight, more preferably 5 to 20% by weight. Weight%.

Next, the composite laminated fabric according to the present invention will be explained according to an example of the manufacturing process.

One of the specific examples of manufacturing the composite laminated fabric of the present invention includes the steps shown below. Although this step is one of the preferred examples, it goes without saying that the manufacturing method of the present invention is not limited to this method.

That is, (first step) a suitable fiber base material is previously subjected to treatment for suppressing penetration of the polyurethane polymer solution.

(Second Step) A polar organic solvent solution containing a polyurethane polymer as a main component is applied to at least one side of the base material.

(Third step) Immerse in a coagulation bath to form a polyurethane microporous film.

(Fourth step) Aluminum is vacuum-deposited on the polyurethane microporous film layer to form an aluminum film on the portions other than the small pores existing on the surface of the microporous film.

(Fifth process) Heat set without tension in the width direction,
Creates a crack in the aluminum film.

(Sixth Step) A substantially non-porous film layer of a moisture permeable synthetic polymer is formed on the aluminum film.

(Seventh step) Calendering is performed on the non-porous film layer.

(Eighth step) Perform tJ3 water processing.

That is, in the present invention, a polar organic solvent solution mainly containing the polyurethane polymer shown in the second step may be applied directly to at least one side of the fiber base material, and then coagulation treatment may be performed. It is preferable to carry out a pretreatment for the purpose of improving moisture permeability, improving the feel of the coated fabric, and improving the adhesion between the microporous coating and the fiber base material. The first idea is to allow the polyurethane polymer to penetrate in the thickness direction of the fiber base material up to a process depth of 3 minutes of the thickness of the base material, but to prevent it from penetrating beyond that. Preferable in terms of moisture.

Treatment methods for this purpose include heating and pressurizing the surface of the fiber base material to which the polyurethane polymer solution is applied to change the cross-sectional shape of the fibers and narrowing the fiber gaps, and applying a fluorine-based repellent to the fiber base material. There is a method of applying IΩ liquid medicine such as water medicine. By appropriately applying these treatment means to the fiber base material, when applying the polyurethane polymer solution, the penetration of the polymer solution into the fiber base material is suppressed, and at the same time, the fibers and synthetic polymer constituting the base material are The bond is relaxed and therefore the texture is flexible and breathable.

A coated fabric with good peel strength can be obtained.

Note that if the polyurethane polymer solution permeates the fiber base material in the thickness direction to a depth of one-third or more of the thickness, physical properties such as moisture permeability and tear strength, and flexibility will decrease.

As the water repellent used in the present invention, it is preferable to use a fluorine water repellent. The amount of the fluorine-based IΩ solution attached to the fiber base material is related to the viscosity of the polymer solution used in the second step, but it is preferably in the range of 0.03 to 1.0% by weight. If it deviates from this range, for example, the adhesion amount will be 0.
If the amount is less than 3% by weight, the fiber I of the polyurethane polymer solution
The effect of suppressing penetration into the I base material is poor, and the resulting coated fabric has poor softness and moisture permeability. On the other hand, when the coating amount exceeds 1.0% by weight, the treatment effect is remarkable, and the texture of the resulting coated fabric is extremely soft and has excellent moisture permeability, but the peeling strength is weak and durability is poor. poor.

In addition, after the above-mentioned water-repellent treated fiber base material is further added with water or a water/polar organic solvent mixture in an amount of 100% by weight or less based on the weight of the base material, the following second step and subsequent steps are carried out. Although the mechanism of action is not clear, the effect of this process is more significant than that of water repellent treatment alone.
In particular, peel strength is significantly improved.

In the present invention, in order to improve the peel strength between the polyurethane polymer film and the fiber base material without impairing moisture permeability, the polymer is coated on the surface of the fiber base material with a composition different from that of the polyurethane polymer. It is also preferable to apply a polymer, particularly a synthetic polymer having an adhesive function, intermittently in dots or lines.

In the present invention, a polar organic solvent solution mainly containing a polyurethane polymer is applied to a fiber base material which has been pretreated as described above.

As the polyurethane polymer used in the present invention, polyester-based or polyether-based polyurethane polymers can be considered, and in general, any polymer can be used as long as it has the function of forming a microporous film by a wet coagulation method. But it can be adopted. However, in the present invention, extremely small pores are formed on the surface of the coated film using these polyurethane polymers, and at the same time, cavities having an inner diameter larger than the diameter of the pores on the surface are formed inside the film. It is necessary to form a polyurethane polymer, and a coating solution based on polyurethane polymers has to be specially prepared for this purpose.

An example of the composition of the polyurethane polymer solution used in the present invention is shown here.

In the present invention, the polyurethane polymer is 8 to 25% by weight.
0.1 to 1.0% by weight of a fluorinated water repellent, 0.2 to 3% by weight of polyisocyanates, and 1 to 8% by weight of a nonionic surfactant in a polar organic solvent solution typified by dimethylformamide containing It is desirable to use a liquid preparation containing %.

As the ↑Ω water agent used in the present invention, fluorine-based IΩ water agents, silicone-based ↑θ water agents, etc. can be used, but fluorine-based water repellents are particularly effective. Durable water repellency can be imparted not only to the surface of the polyurethane microporous film produced by the coagulation method, but also to the surface of the numerous fine pores inherent in the film.

If the water repellent content is less than 0.1% by weight, sufficient tΩ water resistance cannot be obtained, while if it is more than 1.0% by weight, the pores inherent in the microporous film formed during wet coagulation may be They tend to be uneven in size.

As polyisocyanates, diisocyanates,
Examples include compounds having two or more isocyanate groups such as triisocyanates, such as 2.4- (2,6-
) l-lylene diisocyanate, diphenylmethane 4,
Diisocyanates such as 4'-diisocyanate, 1,4-naphthalene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate! Any compound having 3 moles of these diisocyanates and 1 mole of active hydrogen, such as triisocyanates obtained by an addition reaction with 1 mole of trimethylolpropane, glycerin, etc., can be used.

Note that these polyisocyanates may be in a form in which the isocyanate group is free or in a form stabilized by adding phenol or the like.

The effect of the polyisocyanates here is to improve the adhesion of the water repellent agent mentioned above to the polyurethane microporous coating, impart durability to the water repellency, and improve the flexibility of the microporous coating. Note that if the content of polyisocyanates is less than 0.2% by weight, the action and effect will be poor, resulting in insufficient water-repellent durability and the flexibility of the microporous film, whereas if it is more than 3% by weight. In this case, the effect is noticeable, but the texture becomes rough and hard.

As the nonionic surfactant used in the present invention, any commonly reprinted nonionic surfactant can be used, but a nonionic surfactant composed of a block of polypropylene glycol and polyethylene glycol is particularly preferred. Give results.

That is, in the present invention, the inclusion of such a nonionic surfactant has the effect of increasing the compatibility of the above-mentioned water repellent and polyisocyanates, pigments, and other additives with the polyurethane polymer solution. Also, when the polyurethane polymer solution is immersed in a coagulation bath, the effect is to adjust the elution rate of the solvent in the polymer solution into the coagulation bath and the permeation and diffusion rate of water in the coagulation bath into the polymer solution. As a result, the pores inherent in the microporous film produced can be made uniform and fine, and most of the tΩ solution used can be uniformly collected on the surface of the pores. The content of nonionic surfactant is 1% by weight.
If the amount is less than 8, the effect is insufficient;
When the amount is more than % by weight, the pore size inside the resulting microporous film tends to become large.

Note that the polyurethane polymer of the present invention can be any polyester-based or polyether-based polyurethane polymer, but generally, when forming a microporous polyurethane film by a wet coagulation method, the content of the polyurethane polymer is There is a correlation between the diameter of the pores inherent in the microporous film, and as the content increases, the pore diameter tends to become denser. In the present invention, this tendency is alleviated by the effect of the nonionic surfactant used in combination, but if the content of the polyurethane polymer is lower than 8% by weight, the diameter of the small pores of the porous film is formed to be 5 microns or less. On the other hand, if it is higher than 25% by weight, extremely fine pores may be formed, but the moisture permeability is poor and the feel becomes rubber-like.

The coating liquid is applied uniformly to a desired thickness using a knife-over-roll coater or other conventional coating machine.

The viscosity of the above-mentioned liquid mixture used in the present invention is not particularly limited, but if the viscosity is extremely low, it is difficult to suppress the permeation of the liquid mixture into the fiber base material even if pre-treatment is performed. Therefore, it is necessary to consider this together with the pretreatment method.

As mentioned above, in the present invention, the coating liquid (
By using a polyurethane polymer solution containing a water tightening agent, a polyisocyanate [and a nonionic surfactant, respectively, in amounts within specified ranges, the synergistic action of these agents results in a microporous film 3 as shown in FIG. Cavities 6.6', 6'' having a large number of fine inner diameters are formed on the surface of the fiber base material 4 and at the same time inside the microporous film.

On the other hand, the surface of the microporous film 1 has small pores 5.5'.

5" are formed, and the diameter of the small hole is 5".
There are a considerable number of particles smaller than microns.

There are also many small pores with a diameter of 1 micron or less. According to actual measurements based on Example 1, the diameter of the small pores is distributed from 0.1 micron to 3.0 micron, and 0.1 micron.
Small pores from micron to 1.0 micron accounted for a considerable proportion. In addition, most of these small pores communicate with cavities 6.6', 6'' inside the film, and the diameter of the cavity is at least three times the diameter of the small pores. It has a structure in which it forms a so-called truncated shape, which was completely unthinkable in the past.The diameter of the cavity is usually 50 microns on average, and preferably about 30 microns.By the way, the cavity in the cavity 6' in the figure X of
And as a result of actually measuring Y, X was 20 microns and Y was 12 microns.

Furthermore, in the present invention, one or more small holes 7.7' are provided in a part or all of the wall part partitioning between adjacent cavity parts,
7'' is provided to communicate between the cavities.

The diameter of this communicating hole is 5 microns or less, usually about 0.1 to 3 microns. Conventional microporous films have structures that include many closed cells or many tubular pores that communicate between the front and back surfaces, and most of these have diameters of 10 microns or more. Moisture Permeability 1 Previously, these had the disadvantages of poor breathability or poor waterproofness, but in the present invention, we have developed a new method that combines extremely small pores of 5 microns or less and a relatively large cavity. Because it is a microporous film, it is possible to obtain coated fabrics with excellent water resistance, flexibility, and strong peeling properties, as well as excellent moisture permeability and waterproof properties.

Further, since the microporous film of the present invention has the above-mentioned characteristic structure, it can exhibit excellent functions in terms of waterproofness and moisture permeability. It should be noted that there are an extremely large number of small pores formed on the surface of the microporous film of the present invention, and a measurement of a certain portion shows that 500,000 pores/cI+! It turns out that there are more than that.

The third step is not particularly limited, but it is advantageous to use an aqueous solution containing 5 to 15% by weight of dimethylformamide as the coagulation bath.

When the coagulation of the polyurethane polymer is completed, the solvent remaining in the microporous coating layer is sufficiently washed away and dried.

The fourth step is to form a metal coating layer in contact with the polyurethane microporous coating 11M layer formed by the method described above, except for the small pores present on the microporous coating surface.

The metal used here may be any metal as long as it can be processed by vapor deposition as described above.

Also, the same vapor deposition method as described above can be used.

The reason why small pores are formed in the metal film as described above in the present invention is that the metal film has almost no moisture permeability, and if the metal film does not have small pores, moisture permeability will be significantly inhibited. For example, if a metal is deposited on the surface of a moisture permeable nonporous film layer in the same manner as described above, a substantially nonporous metal film will be formed on the surface of the film, and the reflection performance of radiant energy will be significantly improved.
On the other hand, moisture permeability is significantly reduced.

However, in the present invention, the radiant energy reflection performance is significantly improved, and the moisture permeability is hardly reduced (the moisture permeability is approximately the same as that of the microporous film layer), and the object of the present invention can be achieved for the first time. It is something.

Here is one example. That is, through the first to third steps of the present invention, the moisture permeability is 5500g/, l・2
As a fourth step, aluminum was vacuum deposited to a thickness of 0.06 microns on the coated fabric having a 4-hour performance (invention).

For comparison, moisture permeable 4, in which the surface of the microporous film layer is top-coated with moisture permeable polyurethane (non-porous film layer)
Aluminum was vacuum-deposited to a thickness of 0.06 microns on a fabric having a performance of 500 g/m/24 hours (comparative example, metal film without small holes).

The performance of the resulting fabric is shown in the table below.

The fifth to seventh steps are performed on the metal layer to prevent the metal layered on the microporous film layer from being corroded by acid, alkali, water, etc. and falling off due to wear etc. in the fourth step. In this step, a protective resin film layer is formed on the substrate. In addition, since the adhesion between the microporous film layer and the metal film is often not very strong, as mentioned above, cracks are created in the metal film in the fifth step, and in the sixth step, a synthetic polymer with moisture permeability whose viscosity is slightly lowered is used. For example, a solution of a synthetic polymer selected from synthetic polymers mainly composed of polyurethane polymers, polyacrylic acid polymers, and silicone polymers is coated uniformly using a floating knife coater or other ordinary coating machine. By applying it to a specified thickness and drying it, a portion of the synthetic polymer enters the cracks in the metal film and adheres to the microporous film. As a result, even if the adhesive strength between the microporous film layer and the metal film is weak, the adhesion between the protective resin film layer and the microporous film layer at the cracked part is strong, so that the microporous film layer and the metal film are The adhesive strength between the protective resin film layer and the protective resin film layer is strong.

The seventh step does not necessarily need to be carried out, but if the protective resin layer is calendered at a temperature close to the melting point of the resin, the resin will be pushed into the cracks of the metal film and reach the microporous coating layer, as described above. The adhesive force between the three parties becomes stronger.

Although the eighth step does not necessarily have to be carried out, it imparts a more permanent ↑Ω aqueous property to the composite laminated fabric obtained up to the seventh step, and is carried out if necessary.

↑As the Ω liquid agent, any one type of water agent such as fluorine type or silicone type can be used. The amount of water repellent applied to the substrate can be any amount depending on the application, but is generally in the range of 0.5 to 2.0% by weight.

〔Effect of the invention〕

The present invention features pores present on the surface of a microporous film that simultaneously has three contradictory functions: waterproofness, which prevents water from entering from the outside into clothing, and moisture permeability, which facilitates the evaporation of water from the human body. Golf wear has excellent heat retention, moisture permeability, and waterproof functions by covering the rest of the golf wear with metal.

Sportswear such as ski wear, winter clothing.

It can be used in a wide range of applications, including raincoats.

〔Example〕

Example 1 A woven fabric made of "Tetron" cotton blend yarn was treated with a fluorine-based tθ aqueous solution, dried, and heat treated. Incidentally, the amount of the water repellent applied to the fabric is 0.04% by weight.

15 parts by weight of polyester polyurethane elastomer,
0.4 parts by weight of fluorine-based water repellent, trimethylolpropane
1.0 parts by weight of hexamethylene diisocyanate (mole ratio 1:3) adduct and polypropylene glycol/polyethylene glycol block (nonionic surfactant)
A coating liquid (viscosity 900 cps/30°C) prepared by dissolving 5 parts by weight in 78.6 parts by weight of dimethylformamide,
Approximately 300 g/I (wet) was applied onto the substrate subjected to the fΩ water treatment using a reverse roll coater, and then immersed in an aqueous solution containing 10% dimethylformamide at 30°C. After gelling for 5 minutes, heat at 80°C.
After washing with hot water for 30 minutes and drying with hot air, heat treatment is performed at 140°C for 3 minutes.

The resulting coated fabric has a smooth texture and softness because the polyurethane paint liquid hardly penetrates into the fiber base material, and has a water pressure resistance of 1600a + lI□0° and a moisture permeability of 5500.
g / rrr ・24 hours, peeling strength 400g/cm
It has the physical properties of

Vacuum deposition was continuously performed on the surface of the polyurethane microporous coating layer of the above-mentioned coating material under the following conditions while being wound in a high-frequency heating type vapor deposition machine.

Metal: Aluminum Degree of vacuum: 2 Xl0-'torr Evaporation source temperature:
Approximately 1200℃ Base material temperature: 30'C Processing speed: 30m/min Through this process, aluminum with a thickness of approximately 0.05 microns is uniformly adhered to areas other than the pores existing on the surface of the microporous film. .

The composite laminated fabric having an aluminum film on the surface of this microporous film is tensioned by 5% in the width direction using a heat setter.
After treatment at a temperature of 140°C for 1 minute to crack the aluminum film, a polyurethane polymer having MtW properties (a non-porous film layer of 10 microns in thickness was formed on the aluminum surface with a moisture permeability of 4200 g/m・24 hour performance) in IPA/xylene solution (viscosity: 1
000cps/30°C) containing 10% by weight of aluminum powder was applied uniformly using a floating knife coater and dried with hot air to form a substantially non-porous coating layer with an average thickness of 2 microns ( A protective resin film) is formed.

Next, it is immersed in a solution containing 1% by weight of a silicone water repellent, uniformly squeezed with a mangle 6 trowel to a squeezing rate of 70%, and then heat-treated at 150° C. for 30 seconds using a heat setter.

After that, using a 40TON calendar, the speed was 30 m/
(The protective resin film side is treated at a temperature of 140°C for 30 minutes, and the resin is pushed into the cracks in the aluminum).The aluminum film is placed on top of the polyurethane microporous film surface, and the polyurethane polymer is further applied to provide non-porous protection. A composite laminated fabric having a resin film was obtained.

This composite laminated fabric has high heat retention of 1.55 clo,
Moisture permeability was 3900 g/rrr for 24 hours, which was not significantly reduced due to the microporous film-coated fabric, and water pressure resistance was good at 2300+*mHzO. In addition, the peeling strength between the polyurethane microporous film and the aluminum film/protective resin film is 108 g/cm vertically and 113 g/cm horizontally.
g/am, it was easy to wash with water, and even after dry cleaning, the aluminum film did not peel off and the heat retention properties did not change. Furthermore, the infrared reflectance measured from the protective resin film side is as high as 0.75, making it easy to wash with water.

There was no change even after dry cleaning.

(Note) Physical properties were measured according to the following methods.

Heat retention: A, S, T, M, D-1518-577
Moisture permeability: JIS Z-0208 Water pressure resistance: JIS L-1092 Strong peel JIS L-1066 Washed with water: JIS L-0217 Dry cleaning: JIS L-1018 Infrared reflectance: Emissivity meter (DEUICES & 5ERUICES COM
(manufactured by PANY), the emissivity at a wavelength of 3 to 30 μm was measured, and the reflectance was determined using the following formula.

Reflectance = 1 - Emissivity Example 2 The method of creating cracks in the aluminum film in Example 1 was repeated by calendering the aluminum film instead of using a heat setter (conditions: 40 TON calender, speed 30 m/min,
A composite laminated fabric was obtained in the same manner as in Example 1 except that cracks were created (temperature: 150°C).

This composite laminated fabric has a peeling strength of 98g/c vertically between the polyurethane microporous film and the aluminum film/protective resin film.
m, width: 105 g/am, which is slightly lower than that of Example 1.

Other performances were the same as in Example 1.

Example 3 In place of the polyurethane polymer solution having moisture permeability that forms the protective resin film in Example 1, a non-porous film with a thickness of 10 microns was formed, and the moisture permeability was 3800 g /
Same as Example 1 except that a toluene (viscosity: 2000 cps/30°C) solution of polyacrylic acid polymer having RD/24 hour performance was used to form a non-porous film layer with an average thickness of 5 microns. A composite laminated fabric was obtained by processing.

This composite laminated fabric has a heat retention of 1.50 clo, moisture permeability of 3500 g/=・24 hours, and water pressure resistance of 250
0mmH2O, infrared reflectance 0.07. The peel strength between the porous film and the aluminum film/protective resin film is 102 g/cm (vertical) and 96 g/cm (horizontal), providing excellent heat retention, moisture permeability, and waterproof functionality. Moreover, it has good washing resistance, and its physical properties hardly change after washing.

Example 4 In Example 1, a coarse mesh-like knit was placed on the polyurethane microporous film side, and aluminum was vapor-deposited using a roll wound at the same time. A composite laminated fabric was obtained in the same manner as in Example 1, except that aluminum was vapor-deposited in dots on the surface of the microporous film using this method.

This composite laminated fabric has a heat retention of 1.40 clo and moisture permeability of 4.
000 g/m・24 hours, water resistance 220ONH2
0, infrared reflectance 0.55. The peeling strength between the microporous film and the aluminum film/protective resin film is 180g vertically/
am.

The width is 176 g/cm, which is slightly inferior in heat retention compared to Examples 1 to 3 described above, but the peeling strength is high and the durability is excellent.

Comparative Example 1 An IPA/xylene solution of a polyurethane polymer containing 30% aluminum metal powder was gravure coated using a gravure coater on the microporous film of a polyurethane microporous film coated fabric obtained in the same manner as in Example 1. As a result, the heat retention was as low as 1.30 clo, and the infrared reflectance was as low as 0.35.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged view of the membrane structure of a cross section of the composite laminated fabric of the present invention. FIG. 2 is an electron micrograph showing the film structure of the composite laminated fabric in Example 1 after aluminum vapor deposition (the aluminum film has small holes). FIG. 3A is a diagram showing the surface of the deposited film after aluminum deposition in Example 1, and FIG. 3B is a diagram showing the film structure after the heat setting process. DESCRIPTION OF SYMBOLS 1... Protective resin film, 2... Metal film, 3... Microporous polyurethane resin film, 4... Fiber base material, 5゜5
', 5''... Small pores on the surface of the microporous film, 6.6'. 6''... Cavity, 7.7', 7''... Small pores communicating between the cavities.

Claims (1)

[Scope of Claims] 1. A fiber base material has a microporous polyurethane resin film on at least one side, and a metal film is laminated on a portion other than the pores existing on the surface of the film. Composite laminated fabric. 2. The composite laminated fabric according to claim 1, wherein the metal film has a thickness of 0.01 to 0.30μ. 3. The composite laminated fabric according to claim 1, wherein the metal film has partially cracked parts. 4. The composite laminated fabric according to claim 1, wherein the metal film has a protective resin film on its surface. 5. The composite laminated fabric according to claim 4, wherein the protective resin film is 5 times or more thicker than the metal film. 6. The composite laminated fabric according to claim 4, wherein the total thickness of the metal film and the protective resin film is not more than twice the thickness of the microporous polyurethane resin film. 7. The composite laminated fabric according to claim 4, wherein the membrane portion has an infrared reflectance of 0.5 or more. 8. The moisture permeability of the composite membrane layer consisting of a microporous polyurethane resin membrane, a metal membrane, and a protective resin membrane is 2000 to 8000 (g
/m^2・24 hours) and has a water pressure resistance of 7000mmH.
The composite laminated fabric according to claim 4, which has a _2O/cm^2 or less.