CN210821268U - A military green PVC/TPU high resistance composite film - Google Patents

Abstract

The utility model discloses a green PVC of army TPU high resistant complex film, green PVC of army TPU high resistant complex film is from top to bottom in proper order: the decorative layer comprises an army green PVC plastic slurry layer, an army green PVC plastic slurry layer with an adhesive, a high-strength polyester woven fabric, a transparent PVC plastic slurry layer with an adhesive, a transparent PVC plastic slurry layer and a modified TPU barrier film layer; the army green PVC plastic slurry layer, the army green PVC plastic slurry layer with the adhesive, the high-strength polyester woven fabric, the transparent PVC plastic slurry layer with the adhesive and the transparent PVC plastic slurry layer are coated with a knife coating method to obtain army green PVC coated cloth, and the transparent PVC plastic slurry layer of the army green PVC coated cloth and the modified TPU barrier film layer are laminated through pressure to obtain the army green PVC/TPU high-resistance composite film material. The utility model has the advantages of good high separation, high strength, light weight, green, simple process, easy implementation and wide market prospect.

Description

A military green PVC/TPU high resistance composite film

technical field

The utility model relates to a preparation method of a composite film, in particular to an army green PVC/TPU high-resistance composite film.

Background technique

Membrane material is the most important part of the membrane structure and is called the "fifth generation building material", and its function is equivalent to the concrete, steel and other materials in the traditional rigid structure. It is a kind of film material with high strength and flexibility, which is a coated fabric composed of a fabric material and a coating. At present, the commonly used membrane materials are divided into the following types according to their different coating materials: 1) PVC membrane: composited by polyvinyl chloride coating and polyester fiber (polyester) base layer; 2) PTFE membrane: in the extreme A composite membrane material formed by coating polytetrafluoroethylene (PTFE) on a base cloth woven from fine glass fibers; its biggest features are high strength, good durability, fire and flame resistance, good self-cleaning properties, and are not affected by ultraviolet rays ;3) PVDF membrane material: a composite membrane material formed by coating polyvinyl chloride on the polyester fiber woven base cloth and then adding 100% polyvinylidene fluoride (PVDF) surface coating. Cost-effective, low raw material cost, good tear strength and excellent processing flexibility, it is the most widely used film material at present.

The traditional polyester PVC film is generally composed of a base layer and a coating surface layer. By first smearing the polyvinyl chloride resin or emulsion evenly on the cloth base, and then baking and melting (heating until the paste layer is completely melted and plasticized and evenly adhered to the cloth). On the cloth base), the film is formed after cooling. The PVC film is usually laminated by hot pressing, and the PVC film and polyester fabric are directly laminated under a certain pressure and temperature, and the calendered film can be obtained by cooling. Usually, this method needs to coat a layer of adhesive on the surface of the base fabric, and then the base fabric and the PVC film are bonded together by heating and pressing. At present, the products of the hot-pressing lamination method are mainly double-layer hot-lamination films.

At present, the film cold sealing materials have problems such as poor bonding force with the film, high thickness and low bonding strength. The preparation of functional membranes depends on membrane structure design, coating formulation design and composite process. And the research on the multi-layer thermal paste technology is still in its infancy, especially the multi-layer thermal paste film technology for preparing high-resistance composite films needs further research.

Utility model content

The technical problem to be solved by the utility model is to provide a military green PVC/TPU high-resistance composite film, the product water vapor transmission rate (g/m ³ *24h) ≤ 1.5, and has excellent high barrier, high strength and light weight. Advantages, green and environmental protection, simple process, easy to implement, and broad market prospects.

The utility model provides an army green PVC/TPU high-resistance composite film. The army-green PVC/TPU high-resistance composite film is in the order from top to bottom: an army green PVC plastic slurry layer, an army green with an adhesive PVC plasticized layer, high-strength polyester woven fabric, transparent PVC plasticized layer with adhesive, transparent PVC plasticized layer and modified TPU barrier film layer; the military green PVC plasticized layer with adhesive The military green PVC plastic slurry layer, high-strength polyester woven fabric, transparent PVC plastic slurry layer with adhesive, and transparent PVC plastic slurry layer are all obtained by knife coating method to obtain military green PVC coated cloth. The transparent PVC plastic slurry layer of the military green PVC coated cloth and the modified TPU barrier film layer are pressed together to obtain the military green PVC/TPU high-resistance composite film material.

As a preference, the military green PVC plastic slurry layer, the military green PVC plastic slurry layer with adhesive, the transparent PVC plastic slurry layer with adhesive and the transparent PVC plastic slurry layer all include PVC paste resin , plasticizer, adhesive, anti-aging agent and water repellent, wherein plasticizer is DINP, and the content of plasticizer is 54% by weight of PVC paste resin.

As a kind of preference, the military green PVC plastic paste layer and the military green PVC plastic paste layer with adhesive also contain military green pigment and titanium dioxide paste, and the content of the titanium dioxide paste is the weight of the PVC paste resin of 9.8%.

As a preference, the adhesive in the military green PVC plastic slurry layer with the adhesive and the transparent PVC plastic slurry layer with the adhesive is an isocyanate-based adhesive, and the content of the adhesive is 3.3% by weight of PVC resin.

As a preference, the thickness of the high-strength polyester woven fabric is 0.20 mm; the thickness of the military green PVC plastic paste layer with adhesive and the transparent PVC plastic paste layer with adhesive are both 0.065~ 0.07 mm.

A preparation method for preparing the above-mentioned military green PVC/TPU high-resistance composite film, comprising the following steps:

a: The front and back sides of the high-strength polyester woven fabric are simultaneously coated with a vertical primer with an army green PVC plastic layer with adhesive and a transparent PVC plastic layer with adhesive by knife coating method. The heating wheel The temperature is 165～180 ℃;

b: the material obtained in step a by the knife coating method is vertically primed with an army green PVC plastic slurry layer and a transparent PVC plastic slurry layer, and the temperature of the heating wheel is 175-185 ℃ to obtain the military green PVC coated cloth;

c: simultaneously preheating the transparent PVC plastic slurry layer and the modified TPU barrier film layer of the military green PVC coated cloth obtained in step b, and contacting the transparent PVC plastic slurry layer of the military green PVC coated cloth with the surface of the TPU barrier film layer , so that it is directly pressure-fitted, and the bonding temperature is 150-160 °C; the speed of the military green PVC coated cloth and the modified TPU barrier film layer entering the bonding pressure wheel is the same; after two flattening, two heating , and cooled to room temperature to obtain a military green PVC/TPU high-resistance composite film material.

As a kind of preference, the steps of the knife-scraping coating of the military green PVC plastic slurry layer with adhesive and the transparent PVC plastic slurry layer with adhesive described in step a include: mixing PVC paste resin, plasticizer , adhesive, anti-aging agent, waterproofing agent, titanium dioxide slurry and pigment are mixed evenly and placed in the storage tank on one side of the machine; PVC paste resin, plasticizer, adhesive, anti-aging agent and waterproofing agent are mixed. After mixing evenly, put it in the storage tank on the other side of the machine. The high-strength polyester woven fabric is rolled through the storage tank by rollers. The transparent PVC plastic slurry layer with adhesive is transported to the heating wheel for heating and cooling.

As a kind of preference, the step of coating the army green PVC plastic slurry layer and the transparent PVC plastic slurry layer by the knife coating method adopted in step b comprises: applying PVC paste resin, plasticizer, anti-aging agent, water repellant, titanium After mixing the white paste and pigment evenly, put it in the storage tank on one side of the machine. Mix the PVC paste resin, plasticizer, anti-aging agent and water repellant evenly and put it in the storage tank on the other side of the machine. a The prepared material is rolled through the storage tank by the roller, and the front and back sides are respectively scraped with a layer of military green PVC plastic slurry layer and transparent PVC plastic slurry layer, and then transported to the heating wheel, entered into the oven for drying and plasticizing, and formed after cooling. Army green PVC coated cloth.

The utility model is mainly applied to the storage of military machinery and equipment, and has a special application field.

The utility model TPU thermal bonding composite technology: the back of the military green PVC coating cloth is designed with a thermoplastic polyurethane elastomer TPU barrier film, a self-developed bonding machine is used, and a base cloth pressing wheel is set between the mask heating wheel and the bottom film heating wheel After two times of flattening and two heating, the flatness of the fit and the barrier ability are improved.

The high-strength base fabric weaving technology of the utility model: 1000D high-strength polyester filaments are used in the warp and weft threads, and 20×20 woven fabrics per inch are used as the base fabric to improve the weaving density and fiber strength, thereby enhancing the mechanical strength of the base fabric.

The formula technology of the military green PVC coating layer of the utility model: the formula of the military green PVC slurry is composed of PVC paste resin, plasticizer, military green material, UV531 antiaging agent, antibacterial agent, adhesive and AG-710 waterproofing agent, Orthogonal orthogonal optimization formula design, high-speed stirring and dispersion, improve the compatibility between materials, with antibacterial, anti-aging, waterproof and other functions.

The beneficial effects of the utility model are as follows: compared with the traditional composite film, the film structure of the present utility model is pioneered by domestic counterparts, the water vapor transmission capacity (g/m ³ *24h) is less than or equal to 1.5, and it has high barrier, high strength, Lightweight and other characteristics; green and environmental protection, simple process, easy to implement, beautiful paste effect, and has excellent market prospects.

Description of drawings

FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

The present utility model will be further described below in conjunction with the accompanying drawings.

Detailed ways

Example 1: As shown in Figure 1, a military green PVC/TPU high-resistance composite film, the military green PVC/TPU high-resistance composite film from top to bottom is: military green PVC plastic slurry layer 1, with Adhesive army green PVC plastic slurry layer 2, high-strength polyester woven fabric 3, transparent PVC plastic slurry layer with adhesive 4, transparent PVC plastic slurry layer 5 and modified TPU barrier film layer 6; Green PVC plastic paste layer 1, military green PVC plastic paste layer with adhesive 2, high-strength polyester woven cloth 3, transparent PVC plastic paste layer with adhesive 4, transparent PVC plastic paste layer 5 The military green PVC coated cloth is obtained by the knife coating method, and the transparent PVC plastic slurry layer 5 of the military green PVC coated cloth and the modified TPU barrier film layer 6 are bonded by pressure to obtain the military green PVC/TPU high resistance composite membrane material.

The military green PVC plastic slurry layer 1, the military green PVC plastic slurry layer 2 with adhesive, the transparent PVC plastic slurry layer 4 with adhesive and the transparent PVC plastic slurry layer 5 all include PVC paste resin, Plasticizer, adhesive, anti-aging agent and waterproofing agent, wherein the plasticizer is DINP, and the content of the plasticizer is 54% by weight of the PVC paste resin.

The military green PVC plastic paste layer 1 and the military green PVC plastic paste layer 2 with adhesive also contain military green pigment and titanium dioxide paste, and the content of the titanium dioxide paste is 9.8% by weight of the PVC paste resin .

The adhesive in the military green PVC plastic slurry layer 2 with the adhesive and the transparent PVC plastic slurry layer 4 with the adhesive is an isocyanate-based adhesive, and the content of the adhesive is a PVC resin. 3.3% by weight.

The thickness of the high-strength polyester woven fabric 3 is 0.20 mm; the thicknesses of the military green PVC plastic slurry layer 2 with adhesive and the transparent PVC plastic slurry layer 4 with adhesive are both 0.065-0.07 mm .

The main technical indicators that the above products can achieve are:

1. Tensile load (N/5cm): warp ≥3200, weft ≥2500;

2. Tear load (N): warp direction ≥ 250, weft direction ≥ 200;

3. Peeling load (N/5cm): warp ≥120, weft ≥120;

4. Water vapor transmission capacity (g/m ³ *24h): ≤1.5.

Embodiment 2: a preparation method of military green PVC/TPU high-resistance composite film, comprising the following steps:

a: The front and back sides of the high-strength polyester woven fabric 3 are simultaneously subjected to vertical primer coating using the knife-scratch coating method with the army green PVC plastic slurry layer 2 with adhesive and the transparent PVC plastic slurry layer 4 with adhesive. , the heating wheel temperature is 165 ~ 180 ℃;

b: The material obtained in step a by the knife coating method is vertically primed with an army green PVC plastic slurry layer 1 and a transparent PVC plastic slurry layer 5, and the temperature of the heating wheel is 175-185 ° C to obtain the military green PVC coating. cloth;

c: simultaneously preheating the transparent PVC plastic paste layer 5 and the modified TPU barrier film layer 6 of the military green PVC coated cloth obtained in step b, the transparent PVC plastic paste layer 5 of the military green PVC coated cloth and the TPU barrier film The surface of the layer 6 is contacted to make it directly press-fit, and the bonding temperature is 150-160 ℃; the speed of the military green PVC coated cloth and the modified TPU barrier film layer 6 entering the bonding pressure wheel is the same; flat, heated twice, and cooled to room temperature to obtain a military green PVC/TPU high-resistance composite film material.

Wherein, the steps of the military green PVC plastic slurry layer 2 with adhesive and the transparent PVC plastic slurry layer 4 with adhesive in the blade coating described in step a include: mixing PVC paste resin, plasticizer, Adhesive, anti-aging agent, waterproofing agent, titanium dioxide slurry and pigment are mixed evenly and placed in the storage tank on one side of the machine; PVC paste resin, plasticizer, adhesive, anti-aging agent and waterproofing agent are mixed After being evenly placed in the storage tank on the other side of the machine, the high-strength polyester woven fabric 3 is rolled through the storage tank by rollers, and a layer of military green PVC plastic slurry with adhesive is scraped on the front and back sides respectively. The transparent PVC plastic slurry layer 4 with adhesive is transported to the heating wheel for heating and cooling.

Wherein, the step of coating the military green PVC plastic slurry layer 1 and the transparent PVC plastic slurry layer 5 by the knife-scratch coating method adopted in step b includes: applying PVC paste resin, plasticizer, anti-aging agent, water repellant, titanium dioxide After mixing the slurry and pigment evenly, put it in the storage tank on one side of the machine. Mix the PVC paste resin, plasticizer, anti-aging agent and water repellant evenly and put it in the storage tank on the other side of the machine. Step a The obtained material is rolled through the storage tank by the roller, and a layer of military green PVC plastic slurry layer 1 and transparent PVC plastic slurry layer 5 are scraped on the front and back sides respectively. Forms army green PVC coated cloth.

Claims (2)

1. A military green PVC/TPU high-resistance composite film is characterized in that: the military green PVC/TPU high-resistance composite film is followed from top to bottom: military green PVC plastic slurry layer (1), with adhesive military green PVC plastic layer (2), high-strength polyester woven fabric (3), transparent PVC plastic layer with adhesive (4), transparent PVC plastic layer (5) and modified TPU barrier film layer (6); the military green PVC plastic paste layer (1), the military green PVC plastic paste layer with adhesive (2), high-strength polyester woven fabric (3), transparent PVC with adhesive Between the plastic slurry layer (4) and the transparent PVC plastic slurry layer (5), a knife coating method is used to obtain an army green PVC coated cloth, and the transparent PVC plastic slurry layer (5) of the military green PVC coated cloth is the same as the one. The modified TPU barrier film layer (6) is pressure-fitted to obtain a military green PVC/TPU high-resistance composite film material. 2. The military green PVC/TPU high-resistance composite film according to claim 1, characterized in that: the thickness of the high-strength polyester woven fabric (3) is 0.20 mm; The thicknesses of the green PVC plastic paste layer (2) and the transparent PVC plastic paste layer (4) with adhesive are both 0.065-0.07 mm.

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