Single-component polyurethane foam joint mixture double-layer tank body structure capable of being constructed in all directions

Abstract

The utility model discloses a single-component polyurethane foam joint mixture double-layer tank structure capable of being constructed in all directions, and relates to the field of single-component polyurethane foam joint mixtures, the single-component polyurethane foam joint mixture double-layer tank structure sequentially comprises an inner cavity and an outer tank from inside to outside, the inner cavity is made of plastic materials, the outer tank is made of high-pressure-resistant materials, the opening of the inner cavity is connected with a valve cup in a sealing mode, and the valve cup is connected with the outer tank in a sealing mode. The upper end of the valve cup is hung on a tank opening of the outer tank or is sealed at the connecting position of a tank body and a tank upper top cover during tank manufacturing, the inner cavity is used for containing a single-component polyurethane foam joint mixture glue solution, and the outer tank is used for containing a propellant. According to the structure, 360-degree omni-directional (inverted, upright and horizontal) construction of glue can be realized; shaking is not needed before construction, construction difficulty is reduced, construction steps are reduced, and product quality is guaranteed; the raw materials of the glue solution formula are easy to select and adjust, the consumption of the foaming agent is reduced, the VOC emission is greatly reduced, and foams with low, medium and high densities can be obtained.

Description

Technical Field

[0001] The utility model relates to the field of one-component polyurethane foam sealants, and specifically relates to a double-layer tank structure of a one-component polyurethane foam sealant that can be constructed in all directions. Background Technique

[0002] The one-component polyurethane foam sealant is a special polyurethane foam product filled in an aerosol can. It has been widely used in construction and various fields. It has excellent functions such as caulking, sealing, heat insulation, bonding, and sound insulation. It is a caulking and sealing material with a single-piece (can) packaging, convenient to carry, simple to use, and environmentally friendly and energy-saving.

[0003] The existing one-component polyurethane foam sealant in the form of an ordinary aerosol can packaging has an inverted valve structure. When in use, the aerosol can must be inverted. During the operation process, it is inconvenient for the operator to hold, and it is difficult to construct in a restricted top space (such as a ceiling, a suspended ceiling).

[0004] CN218787346U realizes upright construction by setting a valve cup and a diversion pipe below the valve, solving the disadvantages of inverted construction in the top space. However, in some places with low height at the lower part that require inverted construction, such as the lower part of a floor-to-ceiling window, upright construction will be difficult. Moreover, if this upright construction method is applied to a gun type, it does not match a large number of commonly used inverted glue guns on the market, and has great limitations in use. Secondly, whether it is an inverted glue or an upright glue, when used horizontally, due to its structural reasons, the foaming agent (propellant) is likely to leak, resulting in the glue not being easily used up and having a high residue rate. In short, whether it is a single inverted glue or an upright glue, there are disadvantages when used in certain specific parts of the construction, and respective special guns need to be configured, and 360° all-directional (inverted, upright, horizontal) construction cannot be achieved, and it is not applicable to all glue guns on the market.

[0005] Secondly, the existing one-component polyurethane foam sealant is in the form of an ordinary aerosol can packaging. The foaming agent (propellant) is commonly propane-butane and dimethyl ether, which coexist with the polyurethane prepolymer glue in one can, and the two cannot be completely compatible within the required ratio. When the glue is extruded to form foam, the foaming agent not only plays a role in foaming, but also acts as a propellant to extrude the glue. If better foam properties (including foaming volume, etc.), better workability (low viscosity), and lower glue residue rate are to be obtained, the amount of the foaming agent (propellant) is large (about 20%), so it will lead to a narrow selection of raw materials and a narrow formula tolerance, making it difficult to adjust the formula, the effective content (solid content) in the glue is low, and a product with a higher density (above 30 kg / m3) cannot be obtained.

[0006] Again, the existing one-component polyurethane foam sealant is in the form of a common aerosol can packaging. The foaming agent (propellant) and the polyurethane prepolymer glue coexist in one can. They are not completely compatible. Before use, it must be shaken to temporarily mix the raw materials in the can evenly. Otherwise, it will affect the foam structure and the amount of foam generated. In this way, the quality and the amount of foam of the final product are not only affected by the product itself, but also have a great relationship with the construction operation.

[0007] Based on the above problems, the inventor provides a tank structure for a one-component polyurethane foam sealant that can be constructed in all directions, has a wider selection of raw materials, is easier to adjust the formula, and does not need to be shaken before construction. Summary of the Utility Model

[0008] The purpose of the present utility model is to provide a double-layer tank structure for a one-component polyurethane foam sealant that can be constructed in all directions. Through this structure, the glue can be sprayed out in all directions of 360 degrees; it does not need to be shaken before construction, reducing the construction difficulty, reducing the construction steps, and ensuring the product quality; the selection and adjustment of the raw materials of the glue formula are relatively easy, the amount of foaming agent used is reduced, and the VOC emission is greatly reduced, and foams of various densities can be obtained.

[0009] This purpose is achieved by the following technical solutions:

[0010] A tank structure for a one-component polyurethane foam sealant that can be constructed in all directions, which sequentially includes an inner cavity and an outer tank from the inside to the outside. At the upper opening of the outer tank, there is a first extended opening, and on the tank body of the outer tank, there is a second extended opening. The inner cavity is connected to the first extended opening or the second extended opening; the inner cavity is made of a plastic material, and the outer tank is made of a high-pressure resistant material. The inner cavity is used to place the one-component polyurethane foam sealant glue, and the outer tank is used to place the propellant. At the lower end of the outer tank, there is an inflation hole and a hole plug, and the hole plug is detachably connected to the inflation hole.

[0011] Among them, the plastic material refers to a material that has plasticity under normal temperature and static load, can be processed or formed by forging, stamping, extrusion, etc., and has strong impact and vibration resistance capabilities, such as low-carbon steel, copper, aluminum, plastics, rubber, etc. Preferably, the inner cavity is made of aluminum foil or plastic or aluminum-plastic composite material. When making the can, the inner cavity is used to place the one-component polyurethane foam sealant glue, and the outer tank is used to place the propellant. High-pressure resistant means a high-pressure resistant material that can withstand a pressure of more than 1.8 MPa, such as a tinplate can or an aluminum can.

[0012] During use, the operator opens the valve at the upper end of the inner cavity. The pressure outside the can is lower than the pressure of the propellant inside the outer tank. The pressure of the propellant squeezes the inner cavity to deform and shrink, and sprays out the one-component polyurethane foam sealant glue in the inner cavity. After curing, the one-component polyurethane foam sealant foam is obtained.

[0013] In actual use, according to the different requirements of the viscosity, performance, production convenience and cost of the one-component polyurethane foam sealant, the inner cavity is adjusted to a bag structure connected with a valve cup or a bottle structure without a valve cup according to the needs.

[0014] When the inner cavity is a bag structure, a valve cup is hermetically connected to the opening of the inner cavity. A third extension port is provided on the valve cup, and the third extension port of the valve cup is connected to the first extension port of the outer tank. The connection of the inner cavity through the valve cup is more conducive to fixing the feeding.

[0015] A valve is provided at the upper end of the valve cup. When the material enters the inner cavity, the opening on the valve cup is closed through the valve.

[0016] Among them, the bag structure connected with the valve cup is a packaging bag structure, which can be rectangular or other shapes. The opening of the bag structure is connected to the valve cup, and usually the third extension port at the upper end of the valve cup is connected to the first extension port of the outer tank. The bag structure connected with the valve cup is suitable for low and medium viscosity one-component polyurethane foam sealant products.

[0017] When the inner cavity is a bottle structure, the bottle structure is a bottle-shaped structure with an open upper end. A fourth extension port is provided at the upper end of the inner cavity, and the fourth extension port is connected to the first extension port or the second extension port. This structure is suitable for one-component polyurethane foam sealant products with various viscosities of low, medium and high. In addition to being suitable for one-component polyurethane foam sealants, this structure can also be used for other products with various viscosities, especially high-viscosity products such as sealants, high-viscosity adhesives, cream and butter.

[0018] Furthermore, a liquid suction pipe is provided in the inner cavity, and the inner diameter of the liquid suction pipe is 3-20 mm. The liquid suction pipe is made of plastic. The provision of the liquid suction pipe in the inner cavity is conducive to the rapid and smooth discharge of the glue liquid at each part of the inner cavity when the inner cavity is pressurized, reducing the glue liquid residue rate.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] The tank structure of the one-component polyurethane foam sealant capable of all-direction construction of the present invention, when in use, in addition to the basic use methods and tools (guns, plastic wrenches) being the same as those of ordinary one-component polyurethane foam sealants, can also achieve 360-degree all-direction (inverted, upright, horizontal) construction of the glue. It is not necessary to shake before construction, reducing the construction difficulty, reducing the construction steps, and ensuring the product quality.

[0021] At the same time, the structure isolates the foaming agent from the propellant through the inner cavity and the outer tank, so that the function of the propellant is independent from the one-component polyurethane foam sealant. The foaming agent in the one-component polyurethane foam sealant has a wider selection range and the best performance can be selected. The dosage is also greatly reduced, the effective matter (solid content) is increased, the unit packaging cost is reduced, and VOC emissions are reduced (selecting suitable foaming agents and propellants can achieve safety, non-flammability, and zero VOC emissions). In addition, the selection and adjustment of formula raw materials are relatively easy, and foam products of various densities can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0023] Figure 1 It is a schematic diagram of the outer tank structure;

[0024] Figure 2 It is a schematic diagram of a bagged structure with an inner cavity;

[0025] Figure 3 It is a schematic diagram of the inner cavity after wrapping and folding;

[0026] Figure 4 It is a schematic diagram of the tank structure of the present invention;

[0027] Figure 5 The schematic diagram is that the inner cavity is a bottled structure, and the fourth extension port of the inner cavity is connected to the first extension port;

[0028] Figure 6 This is a schematic diagram of an inner cavity having a bottle-shaped structure, in which the fourth outer extension port of the inner cavity is connected to the second outer extension port.

[0029] Marks and corresponding parts names in the attached drawings:

[0030] 1-valve, 2-valve cup, 21-third extension port, 3-external tank, 31-first extension port, 32-second extension port, 4-pipette, 5-inner cavity, 51-fourth extension port, 6-inflating hole, 7-hole plug. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the utility model and their descriptions are only used to explain the utility model and are not intended to limit the utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the protection scope of the present utility model.

[0033] Embodiment 1

[0034] This structure sequentially includes an inner cavity 5 and an outer tank 3 from the inside to the outside. The structure of the outer tank 3 is as Figure 1 shown. A first extension port 31 is provided at the upper end opening of the outer tank 3, and a second extension port 32 is provided on the tank body of the outer tank 3. An inflation hole 6 and a hole plug 7 are provided at the lower end of the outer tank 3, and the hole plug 7 is detachably connected to the inflation hole 6.

[0035] When preparing the outer tank, a second extension port 32 is provided on the tank body, and the tank top is sealed on the tank body to obtain the outer tank 3, wherein the first extension port 31 is located on the tank top of the outer tank 3.

[0036] The inner cavity 5 is connected to the first extension port 31 or the second extension port 32; the inner cavity 5 is made of a plastic material, and the outer tank 3 is made of a high-pressure resistant material. The inner cavity 5 is used to place the single-component polyurethane foam sealant liquid, and the outer tank 3 is used to place the propellant.

[0037] During use, the operator opens the valve 1 at the upper end of the inner cavity 5. The pressure outside the tank is lower than the pressure of the propellant in the outer tank 3. The pressure of the propellant squeezes the inner cavity to deform and contract, spraying out the single-component polyurethane foam sealant liquid in the inner cavity, and obtaining the single-component polyurethane foam sealant foam after curing.

[0038] Embodiment 2

[0039] On the basis of Embodiment 1, as Figure 2 shown, the inner cavity 5 is a bag structure. A valve cup 2 is sealingly connected to the opening of the inner cavity 5. A third extension port 21 is provided on the valve cup 2, and the third extension port 21 of the valve cup 2 is connected to the first extension port 31 of the outer tank 3. A liquid suction pipe 4 is connected to the lower end of the valve cup 2. The liquid suction pipe 4 is located in the inner cavity 5, and a valve 1 is provided at the upper end of the valve cup 2.

[0040] During use, the inner cavity connected to the valve cup is wrapped and folded into the structure as Figure 3 shown, and the wrapped inner cavity 5 is placed into the outer tank from the upper end of the outer tank 3, and the third extension port 21 of the valve cup 2 is connected to the first extension port 31 of the outer tank 3.

[0041] Use a filling machine to sequentially pour the metered composite polyether and polymethylene polyphenyl isocyanate into the inner cavity 5 through the opening on the valve cup 2 via the liquid suction pipe 4;

[0042] Place the valve 1 on the can mouth, and use a sealing machine to tightly seal the valve 1 and the valve cup 2 on the can mouth of the outer can 3;

[0043] Then, fill the foaming agent into the inner cavity 5 from the valve 1. During the filling process, the wrapped inner cavity 5 unfolds under the action of the foaming agent. After filling, shake it evenly to obtain a single-component polyurethane foam sealant glue solution in the inner cavity 5;

[0044] Fill the metered propellant into the outer can 3 from the inflation hole 6 at the lower end or to the preset pressure, and seal it with the hole plug 7. After standing, obtain the single-component polyurethane foam sealant with the tank structure of the present invention, as Figure 4 shown.

[0045] During use, the operator opens the valve. After opening the valve, the pressure outside the can is lower than the pressure of the propellant inside the can. The pressure of the propellant squeezes the inner cavity to deform and shrink, spraying out the single-component polyurethane foam sealant glue solution in the inner cavity. After curing, a single-component polyurethane foam sealant foam is obtained. The tank structure of the present invention can realize 360-degree all-directional construction of the glue, and there is no need to shake before construction, which not only reduces the construction difficulty, but also reduces the construction steps and ensures the product quality.

[0046] In this embodiment, the inner cavity 5 is an aluminum-plastic bag, the liquid suction pipe 4 is a plastic pipe with an inner diameter of 10 mm, and the outer can 3 is a tinplate high-pressure can that can withstand a pressure of more than 1.8 MPa.

[0047] Example 3

[0048] On the basis of the above embodiment, the inner cavity 5 is a bottled structure, the bottled structure is a bottle-shaped structure with an upper opening, and a fourth extension port 51 is provided at the upper end of the inner cavity 5. The fourth extension port 51 is connected to the first extension port 31 or the second extension port 32.

[0049] When the fourth extension port 51 of the inner cavity 5 is connected to the first extension port 31, as Figure 5 shown, the material of the inner cavity 5 is polyester PET. Place the inner cavity 5 into the outer can 3, and suspend the upper end of the fourth extension port 51 of the inner cavity 5 on the first extension port 31 of the can mouth of the outer can 3. Use this structure to produce a single-component polyurethane foam sealant: First, place the liquid suction pipe 4 into the inner cavity 5, and then the steps of pouring raw materials, filling the foaming agent, the propellant, etc., the pouring amount, and the filling conditions are the same as those in Example 2. The product usage method and usage effect are also exactly the same.

[0050] When the fourth extension port 51 of the inner cavity 5 is connected to the second extension port 32 of the can body, as Figure 6As shown, the inner cavity 5 is made of polyester PET. When the top of the outer can is not yet sealed on the body of the outer can, the inner cavity 5 is placed into the outer can 3, and the fourth extension port 51 of the inner cavity 5 is connected to the second extension port 32 on the can body. After connection, the top of the can is sealed on the can body. Using this structure to produce one-component polyurethane foam sealant: First, the liquid suction pipe 4 is placed into the inner cavity 5, and then the steps of filling in raw materials, charging foaming agent, propellant, etc., the filling amount, and the filling conditions are the same as those in Example 2. The product usage method and usage effect are also exactly the same.

[0051] Wherein, when the inner cavity 5 is a bottled structure, the liquid suction pipe 4 in the inner cavity 5 is directly placed inside the inner cavity 5.

[0052] The "first", "second", "third", etc. used herein are only for clearly distinguishing the corresponding components and are not intended to limit any order or emphasize importance, etc. In addition, the term "connection" used herein, without special explanation, can be directly connected or indirectly connected via other components.

[0053] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above is only the specific embodiments of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A one-component polyurethane foam sealant double-layer tank structure that can be constructed in all directions, characterized in that: From the inside to the outside, the invention comprises an inner cavity (5) and an outer tank (3), the upper opening of the outer tank (3) is provided with a first extension port (31), the tank body of the outer tank (3) is provided with a second extension port (32), and the inner cavity (5) is connected to the first extension port (31) or the second extension port (32); the inner cavity (5) is made of plastic material, the outer tank (3) is made of high pressure resistant material, the inner cavity (5) is used to place a single-component polyurethane foam sealant glue, and the outer tank (3) is used to place a propellant.

2. The double-layer tank structure of a one-component polyurethane foam sealant capable of being constructed in all directions according to claim 1, characterized in that: The opening of the inner cavity (5) is sealedly connected to a valve cup (2), a third extension opening (21) is provided on the valve cup (2), and the third extension opening (21) of the valve cup (2) is connected to the first extension opening (31) of the outer tank (3).

3. The double-layer tank structure of a one-component polyurethane foam sealant capable of being constructed in all directions according to claim 1, characterized in that: The lower end of the outer tank (3) is provided with an air filling hole (6) and a hole plug (7), and the hole plug (7) is detachably connected to the air filling hole (6).

4. The double-layer tank structure of a one-component polyurethane foam sealant capable of being constructed in all directions according to claim 2, characterized in that: A valve (1) is arranged at the upper end of the valve cup (2).

5. The double-layer tank structure of a one-component polyurethane foam sealant capable of being constructed in all directions according to claim 1, characterized in that: The inner cavity (5) is a bagged structure.

6. The double-layer tank structure of a one-component polyurethane foam sealant capable of being constructed in all directions according to claim 1, characterized in that: The inner cavity (5) is a bottle-shaped structure. The upper end of the inner cavity (5) is provided with a fourth extension port (51), and the fourth extension port (51) is connected to the first extension port (31) or the second extension port (32).

7. The double-layer tank structure of a one-component polyurethane foam sealant capable of being constructed in all directions according to claim 1, characterized in that: A liquid suction tube (4) is arranged in the inner cavity (5).

8. The double-layer tank structure of a one-component polyurethane foam sealant capable of being constructed in all directions according to claim 7, characterized in that: The inner diameter of the pipette (4) is 3-20 mm.

9. The one-component polyurethane foam sealant double-layer tank structure capable of being constructed in all directions according to claim 1, characterized in that: The outer can (3) is a tinplate can or an aluminum can.

10. The double-layer tank structure of a one-component polyurethane foam sealant capable of being constructed in all directions according to claim 1, characterized in that: The inner cavity (5) is made of aluminum foil, plastic, or aluminum-plastic composite material.

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