PVC (polyvinyl chloride) wire-drawing sealing inflatable plate and preparation process

Abstract

The invention belongs to the technical field of inflatable products, and provides a PVC wire-drawing sealing inflatable plate and a preparation process. Comprising the steps that in the first step of SI high-frequency welding, the welding temperature is room temperature, the mold line width of high-frequency welding is 5 mm-40 mm, the pressure of high-frequency welding is 0.3 Mpa-0. 8 Mpa, the current of high-frequency welding is 2 A-15 A, the input voltage of high-frequency welding is 330 V-400 V, and the output voltage of high-frequency welding is 3000 V-10000 V; secondly, a mold is used, and the mold enables the PVC upper surface layer part of the PVC wiredrawing material and the attaching layer made of the PVC attaching material to be welded together under the cooperation of high frequency and pressure; 3, inflating the finished PVC wire-drawing sealing inflatable plate produced in the step SII, testing water, and wiping and packaging after the finished PVC wire-drawing sealing inflatable plate is qualified; and finishing. Compared with the prior art, due to the setting of high-frequency welding process parameters, the inflatable plate produced by the process does not leak air, and has the characteristics of safety, no air leakage and high durability; no adhesive smell exists, and health and environmental protection are achieved; production operation is simplified, and production efficiency is high; the applicability is wide.

Description

Technical Field

[0001] The invention belongs to the technical field of inflatable product manufacturing, and in particular relates to a PVC wire drawing sealing inflatable plate and a preparation process thereof. Background Art

[0002] The sealed inflatable board in the prior art currently includes an inner layer made of PVC brushed material, a bonding layer made of PVC bonding material, and a sealing bonding layer made of PVC soft material, wherein the inner layer has a PVC upper surface layer portion, a cloth layer portion with multiple polyester threads distributed thereon, and a PVC lower surface layer portion. The aforementioned existing sealed inflatable board is manufactured through processes such as PVC brushed composite shearing, PVC soft material shearing, gluing, air drying, pasting, fitting of air nozzles, inflation, water testing, secondary gluing, secondary pasting, hot melt sealing, secondary inflation testing, cleaning of adhesives, and packaging. Adhesives (i.e. glue) are used many times during the manufacturing process. The sealed inflatable board after production is prone to leakage due to aging, has poor safety, is not durable, and has an adhesive odor, which is unhealthy and not environmentally friendly. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a PVC drawing sealing inflatable board and a preparation process.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A preparation process of a PVC drawing sealed inflatable board, the preparation process comprising the following steps:

[0006] Step S1, first prepare an inner layer made of PVC wire drawing material, a bonding layer made of PVC soft material surrounding the outer periphery of the inner layer, a top extended annular portion of the bonding layer as a sealing layer, a sealing layer made of PVC soft material and the inner layer are seamlessly connected to form a high-frequency welding line, wherein the welding temperature during high-frequency welding is room temperature, the mold line width of the high-frequency welding is 5mm-40mm, the pressure of high-frequency welding is 0.3Mpa-0.8Mpa, the current of high-frequency welding is 2A-15A, the input voltage of high-frequency welding is 330V-400V, and the output voltage of high-frequency welding is 3000V-10000V;

[0007] Step 2 SII, arrange the inner layer so that the upper and lower parts are aligned as much as possible, use high-frequency welding equipment and mold, the mold is located outside the upper edge layer part and is in close contact with the upper edge layer part; under the high frequency and pressure of the high-frequency welding equipment, the parameters set by high-frequency welding in SI are adopted, and the high frequency penetrates through the upper edge layer part and the inner layer, so that the PVC upper surface layer part of the inner layer is welded with the upper edge layer part by high-frequency welding, and a high-frequency mold line is formed under the action of mold pressure; two adjacent upper edge layer parts and two adjacent lower edge layer parts are connected end to end to be welded and sealed tightly on the inner layer, and connected to the inner side between the laminating layers to make a finished PVC wire drawing sealed inflatable board;

[0008] The third step SIII, inflate and test the finished PVC wire drawing sealed inflatable board produced in step SII, and then wipe and package it after passing the test; the process is completed.

[0009] As a preferred technical solution of the present invention, when the multiple upper edge layer portions and the multiple lower edge layer portions are respectively welded to the surface of the inner layer made of PVC brushed material through a high-frequency process, the mold line width used in the welding method is smaller than the width of the sealing layer portion made of PVC soft material.

[0010] As a preferred technical solution of the present invention, during the high-frequency welding process of step SI, a three-dimensional mold is used to weld the curvature of the edge of the inner layer made of the drawing material, and the shape of the three-dimensional mold is made according to the curvature of the edge of the inner layer.

[0011] As a preferred technical solution of the present invention, when high-frequency welding is used in steps SI and / or SII, the corresponding mold size can be selectively adjusted according to the product size of the PVC brushed sealing and inflatable board; when welding the PVC brushed material and the PVC soft material surrounding the outer periphery of the brushed material, the value range of the one-time welding length L is 0<L≤3m.

[0012] As a preferred technical solution of the present invention, the mold used in step SII can be a three-dimensional mold;

[0013] Or the mold used may be a straight mold;

[0014] Or the mold used can be a combination of a three-dimensional mold and a straight mold.

[0015] As a preferred technical solution of the present invention, the indentation of the high-frequency welding line can be observed very clearly by naked eyes, which is a direct feature of the preparation process of the PVC drawing sealing inflatable board that is different from the gluing process or the hot welding process.

[0016] The present invention also provides a PVC wire drawing sealing inflatable board made by the above-mentioned preparation process, comprising

[0017] An inner layer made of PVC wire drawing material, a laminating layer made of PVC laminating material, and a sealing laminating layer made of PVC soft material, wherein the inner layer comprises a PVC upper surface layer portion, a fabric layer portion with a plurality of polyester threads distributed thereon, and a PVC lower surface layer portion, wherein the PVC upper surface layer portion is connected to the PVC lower surface layer portion by welding through the wire drawing structure of the fabric layer portion, and the laminating layer surrounds the inner layer and extends upward;

[0018] The sealing layer includes a plurality of upper edge layer portions made of PVC soft material and a plurality of lower edge layer portions made of PVC soft material, and an air nozzle for air intake or exhaust is provided on one side of the bonding layer; two adjacent upper edge layer portions are connected end to end and tightly attached to the top extended annular portion of the bonding layer by welding, and two adjacent lower edge layer portions are connected end to end and tightly attached to the inner connection between the inner layer and the bonding layer by welding.

[0019] As a preferred technical solution of the present invention, the PVC laminating material used for the laminating layer is polyester cloth.

[0020] As described above, the present invention relates to a PVC wire drawing sealing inflatable board and a preparation process, which has the following beneficial effects:

[0021] After utilizing the above-mentioned PVC wire drawing sealing and inflatable board and preparation process, compared with the prior art, the bonding between the inner layer made of PVC wire drawing material, the bonding layer made of PVC bonding material and the sealing bonding layer made of PVC soft material of the PVC wire drawing sealing and inflatable board is achieved by high-frequency welding, which has the following advantages:

[0022] (1) No adhesive is used in the structure of the PVC drawing sealed inflatable board, and there will be no problem of air leakage due to aging caused by adhesive used in the prior art. The parameters involved in the specific high-frequency welding method include the high-frequency welding die line width of 5mm-40mm, the high-frequency welding pressure of 0.3Mpa-0.8Mpa, the high-frequency welding current of 2A-15A, the high-frequency welding input voltage of 330V-400V, and the high-frequency welding output voltage of 3000V-10000V; so that the inflatable board has the characteristics of high safety, no air leakage and strong durability; and the formaldehyde emission reaches E0 level or even exceeds E0 level, without any adhesive odor, healthy and environmentally friendly;

[0023] (2) The various indicators of PVC wire drawing sealing inflatable panels produced by high-frequency welding are improved to varying degrees compared with the process of ordinary adhesive bonding, which simplifies the production operation and can increase the production efficiency by 50% to 70%;

[0024] (3) After production, the finished PVC brushed sealed inflatable board has a wide range of adaptability and can be widely used in indoor mattresses, outdoor wave boards, inflatable furniture, life-saving supplies and other related products.

[0025] The present invention will be further described below in conjunction with specific implementation modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the inner layer of the PVC wire drawing sealing inflatable board applied for by the present invention;

[0027] Figure 2 A three-dimensional diagram of the PVC wire drawing sealing inflatable board applied for by the present invention;

[0028] Figure 3 The process flow chart of preparing PVC drawing sealing inflatable board for the present invention application;

[0029] Figure 4 This is a schematic diagram of the first three-dimensional mold structure used in the process of preparing PVC wire drawing sealing inflatable board in the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the first straight mold used in the process of preparing the PVC wire drawing sealing inflatable board in the present invention;

[0031] Figure 6 This is a schematic diagram of the second three-dimensional mold structure used in the process of preparing PVC wire drawing sealing inflatable board in the present invention;

[0032] Figure 7 A manufacturing process diagram for the present invention;

[0033] Figure 8 This is a cross-sectional view of the effect of the application of the present invention.

[0034] Reference numerals - In the drawings:

[0035] Internal layer 1;

[0036] PVC upper surface layer portion 10; fabric layer portion 11; PVC lower surface layer portion 12;

[0037] Lamination layer 2;

[0038] Gas nozzle 20;

[0039] Sealing layer 3;

[0040] Upper edge layer portion 30; Lower edge layer portion 31;

[0041] Mold 4;

[0042] High frequency welding line 5. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0048] The present invention also provides a preparation process of the PVC wire drawing sealing inflatable board as described above; the specific preparation process is as follows. In this embodiment, combined with Figures 1 to 8 As shown, the preparation process comprises the following steps:

[0049] Step S1, first prepare an inner layer 1 made of PVC wire drawing material, a bonding layer 2 made of PVC soft material surrounding the outer periphery of the inner layer 1, the top extended annular portion of the bonding layer 2 becomes a sealing layer 3, and the sealing layer 3 made of PVC soft material and the inner layer 1 are seamlessly connected to form a high-frequency welding line 5, wherein the welding temperature during high-frequency welding is room temperature, the mold line width of the high-frequency welding is 5mm-40mm, the pressure of high-frequency welding is 0.3Mpa-0.8Mpa, the current of high-frequency welding is 2A-15A, the input voltage of high-frequency welding is 330V-400V, and the output voltage of high-frequency welding is 3000V-10000V;

[0050] Step 2 SII, arrange the inner layer 1 so that the upper and lower parts are aligned as much as possible, use high-frequency welding equipment and mold 4, the mold 4 is located outside the upper edge layer 30 and is in close contact with the upper edge layer 30; under the high frequency and pressure of the high-frequency welding equipment, the parameters set by high-frequency welding in SI are adopted, and the high frequency penetrates through the upper edge layer 30 and the inner layer 1, so that the PVC upper surface layer 10 of the inner layer 1 is welded together with the upper edge layer 30 by high-frequency welding, and a high-frequency mold line is formed under the action of mold pressure; the two adjacent upper edge layer parts 30 and the two adjacent lower edge layer parts 31 are connected end to end to be welded and sealed tightly on the inner layer 1, and connected to the inner side between the laminating layers 2 to make a finished PVC wire drawing sealed inflatable board;

[0051] The third step SIII, inflate and test the finished PVC wire drawing sealed inflatable board produced in step SII, and then wipe and package it after passing the test; the process is completed.

[0052] It should be noted that: the comparative example is an inflatable board product produced by the existing process in the background technology, and the specific process is not repeated here; when the high-frequency welding process of the present invention is used for processing and production, there are multiple specific high-frequency welding parameter settings, which can be the first set parameters (Example 1): the high-frequency welding temperature is room temperature, the high-frequency welding die line width is 10mm, the high-frequency welding pressure is 0.3Mpa, the high-frequency welding current is 2A, the high-frequency welding input voltage is 330V, and the high-frequency welding output voltage is 3000V; the second set parameters ( Example 2): The high-frequency welding temperature is room temperature, the high-frequency welding die line width is 50mm, the high-frequency welding pressure is 0.4Mpa, the high-frequency welding current is 6A, the high-frequency welding input voltage is 360V, and the high-frequency welding output voltage is 4000V; The third set parameters (Example 3): The high-frequency welding temperature is room temperature, the high-frequency welding die line width is 60mm, the high-frequency welding pressure is 0.6Mpa, the high-frequency welding current is 10A, the high-frequency welding input voltage is 400V, and the high-frequency welding output voltage is 10000V.

[0053] Table 1 below is a test table of whether there is leakage, formaldehyde content, and odor (pungent smell detection) of the aforementioned comparative example and Examples 1-3 when used for 10 days under the same conditions:

[0054]

[0055]

[0056] Table 2 below is a test table of whether there is leakage, formaldehyde content, and odor (pungent smell detection) of the aforementioned comparative example and Examples 1-3 when used for 20 days under the same conditions:

[0057]

[0058] Table 3 below is a test table of whether there is leakage, formaldehyde content, and odor (pungent smell detection) of the aforementioned comparative example and Examples 1-3 when used for 60 days under the same conditions:

[0059]

[0060] It can be seen from the above three test tables that the performance effect of the PVC wire drawing sealed inflatable board produced by the second parameter setting is the best, the formaldehyde emission reaches E0 level or even exceeds E0 level, there is no adhesive smell, and it is healthy and environmentally friendly; compared with the comparative example, the inflatable boards of Examples 1-3 are safe, airtight and durable. The inventor has determined through other testing methods that the various indicators of the PVC wire drawing sealed inflatable board produced by the high-frequency welding method applied by the present invention are improved to varying degrees compared with the process of ordinary adhesive bonding, the production operation is simplified, and the production efficiency can be increased by 50% to 70%; therefore, it is helpful for the PVC wire drawing sealed inflatable board to be widely used in indoor mattresses, outdoor wave boards, inflatable furniture, life-saving supplies and other related products after production, so it has a wide adaptability; in addition, according to the inventor's test, the energy consumption can be reduced by 40% compared with the energy consumption of ordinary wire drawing inflatable boards, which is suitable for industrial production.

[0061] In this embodiment, when the plurality of upper edge layer portions 30 and the plurality of lower edge layer portions 31 are respectively welded to the surface of the inner layer 1 made of PVC brushed material by high-frequency technology, the mold line width used in the welding method is smaller than the width of the sealing layer 3 made of PVC soft material.

[0062] Combination Figure 4 or Figure 6 As shown, in this embodiment, during the high-frequency welding process of step SI, a three-dimensional mold is used to weld the curvature of the edge of the inner layer 1 made of the drawing material, and the shape of the three-dimensional mold is made according to the curvature of the edge of the inner layer 1.

[0063] Combination Figure 3 As shown, in this embodiment, when high-frequency welding is used in steps SI and / or SII, the corresponding mold 4 size can be selectively adjusted according to the product size of the PVC drawing sealing inflatable board; when welding the PVC drawing material and the PVC soft material surrounding the outer periphery of the drawing material, the value range of the one-time welding length L is 0<L≤3m.

[0064] It should be noted that the aforementioned L can be 2.5m, 2.6m, 3m or 3.5m or other suitable values.

[0065] Combination Figure 4 , Figure 5 as well as Figure 6 As shown, in this embodiment, the mold 4 used in step SII may be a three-dimensional mold;

[0066] Or the mold 4 used may be a straight mold;

[0067] Or the mold 4 used can be a combination of a three-dimensional mold and a straight mold.

[0068] It should be noted that the indentation of the high-frequency welding line can be observed very clearly with the naked eye, which is a direct feature of the preparation process of the PVC drawing sealing inflatable board that distinguishes it from the adhesive process or the hot welding process.

[0069] The present invention also provides a PVC wire drawing sealed inflatable board made by the above-mentioned preparation process, combined with Figure 1 and Figure 2 As shown, the PVC brushed sealed inflatable board includes

[0070] An inner layer 1 made of PVC wire drawing material, a laminating layer 2 made of PVC laminating material, and a sealing laminating layer 3 made of PVC soft material, wherein the inner layer 1 comprises a PVC upper surface layer portion 10, a fabric layer portion 11 with a plurality of polyester threads distributed thereon, and a PVC lower surface layer portion 12, wherein the PVC upper surface layer portion 10 is connected to the PVC lower surface layer portion 12 by welding through the wire drawing structure of the fabric layer portion 11, and the laminating layer 2 surrounds the inner layer and extends upward;

[0071] The sealing layer 3 includes a plurality of upper edge layer portions 30 made of PVC soft material and a plurality of lower edge layer portions 31 made of PVC soft material, and an air nozzle 20 for air intake or exhaust is provided on one side of the bonding layer 2; two adjacent upper edge layer portions 30 are connected end to end and tightly attached to the top extended annular portion of the bonding layer 2 by welding, and two adjacent lower edge layer portions 31 are connected end to end and tightly attached to the inner connection between the inner layer 1 and the bonding layer 2 by welding.

[0072] In this embodiment, the PVC laminating material used for the laminating layer 2 is polyester fabric.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0074] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A preparation process of a PVC drawing sealing inflatable board, characterized in that: The preparation process comprises the following steps: Step S1, first prepare an inner layer (1) made of PVC wire drawing material, a bonding layer (2) made of PVC soft material surrounding the outer periphery of the inner layer (1), the top extended annular portion of the bonding layer (2) becomes a sealing layer (3), and a high-frequency welding line (5) required for seamless connection of the sealing layer (3) made of PVC soft material and the inner layer (1), wherein the welding temperature during high-frequency welding is room temperature, the mold line width of the high-frequency welding is 5mm-40mm, the pressure of high-frequency welding is 0.3Mpa-0.8Mpa, the current of high-frequency welding is 2A-15A, the input voltage of high-frequency welding is 330V-400V, and the output voltage of high-frequency welding is 3000V-10000V; Step 2 SII, arrange the inner layer (1) so that the upper and lower parts are aligned as much as possible, use high-frequency welding equipment and mold (4), the mold (4) is located on the outside of the upper edge layer (30) and is in close contact with the upper edge layer (30); under the high frequency and pressure of the high-frequency welding equipment, the parameters set by high-frequency welding in SI are adopted, and the high frequency penetrates through the upper edge layer (30) and the inner layer (1), so that the PVC upper surface layer (10) of the inner layer (1) is welded to the upper edge layer (30) by high-frequency welding, and a high-frequency mold line is formed under the action of mold pressure; two adjacent upper edge layer parts (30) and two adjacent lower edge layer parts (31) are connected end to end and tightly attached to the inner layer (1) by high-frequency welding and sealing, and connected to the inner side between the bonding layers (2), so as to form a finished PVC wire drawing sealed inflatable board; The third step SIII, inflate and test the finished PVC wire drawing sealed inflatable board produced in step SI I, and then wipe and package it after passing the test; the process is completed.

2. The preparation process of the PVC drawing sealing inflatable board as claimed in claim 1, characterized in that: When the plurality of upper edge layer portions (30) and the plurality of lower edge layer portions (31) are respectively welded to the surface of the inner layer (1) made of PVC brushed material by high-frequency technology, the mold line width used in the welding method is smaller than the width of the sealing layer (3) made of PVC soft material.

3. The preparation process of the PVC wire drawing sealing inflatable board as claimed in claim 2, characterized in that: During the high-frequency welding process of step SI, a three-dimensional mold is used to weld the curvature of the edge of the inner layer (1) made of the drawing material, and the shape of the three-dimensional mold is made according to the curvature of the edge of the inner layer (1).

4. The preparation process of the PVC drawing sealing inflatable board according to any one of claims 1 to 3, characterized in that: In step SI and / or SII, when high-frequency welding is used, the size of the corresponding mold (4) can be selectively adjusted according to the size of the PVC drawing sealing inflatable board product; when welding the PVC drawing material and the PVC soft material surrounding the outer periphery of the drawing material, the value range of the one-time welding length L is 0<L≤3m.

5. The preparation process of the PVC drawing sealing inflatable board according to any one of claims 1 to 3, characterized in that: The mold (4) used in step SII may be a three-dimensional mold; Or the mold (4) used may be a straight mold; Or the mold (4) used can be a combination of a three-dimensional mold and a straight mold.

6. The process for preparing the PVC drawing sealing inflatable board according to any one of claims 1 to 3, characterized in that: The indentation of the high-frequency welding line (5) can be observed very clearly with the naked eye, and is a direct feature that distinguishes the preparation process of the PVC wire drawing sealing inflatable board from the gluing process or the hot welding process.

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