CN114654778A - Anti-air-leakage TPU airbag and preparation method thereof - Google Patents
Anti-air-leakage TPU airbag and preparation method thereof Download PDFInfo
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- CN114654778A CN114654778A CN202210357182.2A CN202210357182A CN114654778A CN 114654778 A CN114654778 A CN 114654778A CN 202210357182 A CN202210357182 A CN 202210357182A CN 114654778 A CN114654778 A CN 114654778A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000010410 layer Substances 0.000 claims abstract description 195
- 239000000463 material Substances 0.000 claims abstract description 138
- 239000000178 monomer Substances 0.000 claims abstract description 81
- 239000002344 surface layer Substances 0.000 claims abstract description 59
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000004080 punching Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 20
- 238000010030 laminating Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 210000001161 mammalian embryo Anatomy 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000004512 die casting Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 11
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 238000007723 die pressing method Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 9
- 230000032683 aging Effects 0.000 description 6
- 210000004712 air sac Anatomy 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 210000000625 blastula Anatomy 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002459 blastocyst Anatomy 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
- B29D22/02—Inflatable articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/849—Packaging machines
- B29C66/8491—Packaging machines welding through a filled container, e.g. tube or bag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/851—Bag or container making machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
Abstract
The invention particularly relates to an air leakage-proof TPU airbag and a preparation method thereof, wherein the preparation method of the airbag comprises the steps of firstly carrying out film punching treatment on a surface layer material and a bottom layer material to respectively obtain an upper layer airbag with a first airbag cavity and a lower layer airbag with a second airbag cavity, then attaching the upper layer airbag and the lower layer airbag to form an airbag blank in a pre-sealing mode, wherein the first airbag cavity is communicated with the corresponding second airbag cavity to form an airbag monomer, the airbag blank is preset with at least one air inlet channel, then carrying out secondary die pressing on the airbag blank after inflation to separate the air inlet channel and the airbag channel to obtain the airbag, and the airbag monomers of the airbag are mutually independent. The preparation method is simple and convenient to operate, low in production cost and high in production efficiency, the air bag prepared by the method is high in overall bearing capacity, elastic, impact-resistant, bending-resistant and not prone to air leakage, the overall bearing and buffering performance of the air bag is not affected even if a single air bag monomer is damaged, and safety is high.
Description
Technical Field
The invention relates to the technical field of airbag production, in particular to an air leakage prevention TPU airbag and a preparation method thereof.
Background
The air bag has light weight, good elasticity and impact resistance, and is widely applied to the fields of household cushions, medical mattresses, sports protectors, packaging materials and the like. However, the air bags obtained by the difference of the existing structure and the manufacturing process have uneven quality, and are easy to have the problems of air leakage, bending resistance or poor bearing capacity and the like. For example, chinese patent CN104118645B discloses a packaging airbag, which comprises a plurality of elastic airbags arranged in an array, wherein the elastic airbags are connected to each other by soft folded edges to form a planar body, an airbag channel is disposed between adjacent elastic airbags arranged in a longitudinal direction of the elastic airbags, and the longitudinal elastic airbags and the transverse elastic airbags of the elastic airbags arranged in an array are all arranged in a straight line. The air leakage risk and the preparation degree of difficulty that the packing gasbag of this structure has increased the gasbag through setting up of a plurality of air inlets, and whole pressure-bearing performance is relatively poor. For example, chinese patent application CN201710609262.1 discloses a method for manufacturing an inflatable and deflatable bladder for shoe upper, wherein an outer TPU film is bonded with an inner TPU film through a hot melt adhesive film on a mold with a predetermined shape by high-frequency hot pressing to form a closed air chamber. The air bag obtained by the adhesion of the hot melt adhesive film in the preparation method has low bonding strength, is easy to leak when the bearing strength is high, and has short service life. Based on this, the structure and the manufacturing process of the airbag need to be improved to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide an air leakage-proof TPU airbag and a preparation method thereof, the airbag has the characteristics of high elasticity, high bearing strength, bending resistance, air leakage prevention and long service life, and the preparation method of the airbag has high flexibility, low production cost and simple and convenient operation.
The purpose of the invention is realized by the following technical scheme: a preparation method of an anti-air leakage TPU airbag comprises the following steps:
preparing a surface layer material and a bottom layer material required by manufacturing the air bag;
step two, respectively carrying out die punching treatment on the surface layer material and the bottom layer material to obtain an upper layer air bag and a lower layer air bag;
thirdly, attaching the upper layer airbag and the lower layer airbag, and performing pre-mould pressing to obtain an airbag blank;
step four, inflating the airbag blank obtained in the step three, and performing secondary mould pressing on the inflated airbag blank to obtain the airbag;
and step five, performing edge cutting and shaping treatment on the air bag obtained in the step four to obtain a finished air bag product.
Further, the surface layer material and the bottom layer material are TPU films. The TPU film is used as a surface layer material and a bottom layer material of the air bag, so that the air bag has excellent bearing capacity, impact resistance, elasticity, wear resistance and flexing resistance, and is low in processing difficulty and easy to form.
Furthermore, an elastic fabric layer is arranged on the upper surface of the surface layer material, and a cloth layer is arranged on the lower surface of the bottom layer material. The elastic fabric layer and the cloth layer are arranged to enable the fabric layer material and the bottom layer material to be easier to process, mold and demold, and the appearance and the quality of the air bag are effectively improved through selection of different elastic fabric layers and different cloth layers. In the invention, the specific operation is as follows: coating an adhesive on the upper surface of the surface layer material, then bonding the elastic surface material layer with the upper surface of the surface layer material, and drying for later use; coating an adhesive on the lower surface of the bottom material, attaching the fabric layer to the lower surface of the bottom material, and drying for later use. According to the actual application requirement, the surface layer material and the elastic surface material layer, and the bottom layer material and the cloth layer can also be fixed through hot-press bonding.
Further, the gasbag embryo includes upper gasbag and sets up in the lower floor's of upper gasbag lower surface gasbag, be provided with a plurality of gasbag monomers between upper gasbag and the lower floor's gasbag, it is a plurality of gasbag monomer groups to arrange into the gasbag monomer, and a plurality of gasbag monomers in every gasbag monomer group are arranged in proper order, have preset the gasbag passageway between the adjacent gasbag monomer and between the adjacent gasbag monomer group in being located same gasbag monomer group, at least one inlet channel has been preset to the TPU gasbag embryo, gasbag monomer and inlet channel intercommunication, inlet channel is used for being linked together with the external world, upper gasbag and lower floor's gasbag laminating is equipped with the banding connecting portion, the banding connecting portion is around in gasbag monomer, gasbag passageway and inlet channel. Specifically, the upper layer airbag is provided with a plurality of first airbag cavities, and the first airbag cavities are formed by upward bulges of partial areas of the upper layer airbag; the lower floor's gasbag is provided with a plurality of second gasbag chambeies, the second gasbag chamber is by the subregion downwardly convex formation of lower floor's gasbag. The first air bag cavity is communicated with the corresponding second air bag cavity to form the air bag single body.
In the invention, firstly, a surface layer material and a bottom layer material are subjected to film punching treatment to respectively obtain an upper layer air bag with a plurality of first air bag cavities and a lower layer air bag with a plurality of second air bag cavities, the upper layer air bag and the lower layer air bag are jointed to form an air bag blank, and the air bag blank is provided with at least one air inlet channel and an air bag channel in advance to obtain the air bag blank. The air sac embryo fills each air sac monomer to the required saturation degree through the air inlet channel and the air sac channel, and then the air inlet channel and the air sac are sealed and separated to enable the air sac monomers to be mutually independent. The whole impact resistance of gasbag that makes through the setting of above-mentioned structure is good with elasticity, resistant inflection and leak protection gas, even single gasbag monomer damage does not influence the holistic bearing shock-absorbing capacity of gasbag yet, and the security is high.
Further, the specific operation of the second step is as follows: and (3) placing the surface layer material or the bottom layer material into a support frame to be flat, installing a required shape mold on a high-frequency machine, placing the support frame on a hot melting platform of the high-frequency machine, and starting the high-frequency machine to carry out hot-press molding on the surface layer material or the bottom layer material to obtain the upper layer airbag or the lower layer airbag.
Further, the specific operation of the second step is: fixing the surface layer material or the bottom layer material by adopting a jig, placing the fixed surface layer material or the bottom layer material in an oven at the temperature of 130-180 ℃, heating and softening for 30-60 seconds, then placing the softened surface layer material or the softened bottom layer material in a mold of a plastic-absorbing machine, and forming an upper layer air bag or a lower layer air bag under the vacuum negative pressure condition. In actual operation, the vacuum degree of the plastic uptake machine is adaptively adjusted according to parameters such as the thickness of a surface layer material or a bottom layer material.
Further, the specific operation of the second step is: fixing the surface layer material or the bottom layer material by adopting a jig, placing the fixed surface layer material or the bottom layer material in an oven at the temperature of 130-180 ℃, heating and softening for 30-60 seconds, then placing the softened surface layer material or the softened bottom layer material on a forming operation table, applying pressure to the formed surface layer material or the softened bottom layer material through a cold pressing mold, performing die-casting forming on the formed surface layer material or the formed bottom layer material, wherein the pressure is 5-20 kg/square meter and the time is 30-60 seconds, and demolding to obtain the upper layer airbag or the lower layer airbag.
In the invention, the upper layer air bag and the lower layer air bag are easy to form through the film punching treatment in the second step, the operation is flexible, and the production efficiency is high.
Further, the specific operation of the third step is as follows: and (3) placing the upper-layer airbag obtained in the step two on the upper surface of the lower-layer airbag, fixing the upper-layer airbag and the lower-layer airbag by adopting a female die and a flat die, then placing the upper-layer airbag and the lower-layer airbag on a high-frequency machine, using 0.8-1.2A current to generate high-frequency current of 10-40S, welding the upper-layer airbag and the lower-layer airbag in regions except for the airbag monomer, the air inlet channel and the airbag channel together by high-frequency processing to form a sealed edge connecting part, and removing the female die and the flat die after cooling to obtain the airbag blank.
Further, the specific operation of the step four is as follows: after an inflating nozzle of an inflating device is inserted into an air inlet channel to inflate, a first edge sealing die is adopted to fix a plurality of air bag monomers communicated with the air inlet channel, the air inlet channel is sealed and separated through a high-frequency machine, then a second edge sealing die is adopted to fix all the air bag monomers, the air inlet channel and the air bag channels are sealed and separated through the high-frequency machine, and all the air bag monomers of the air bag are mutually independent. In the fourth step, the current of the high frequency machine is 0.8-1.2A, the current-applying time is 20-40S, and the temperature is 140-. The sealing performance and the bending resistance of the air bag are improved through the operation of the fourth step, and the service life is prolonged.
Further, the specific operation of the step four is as follows: after an inflating nozzle of the inflating device is inserted into the air inlet channel for inflating, all the air bag monomers are fixed by adopting the second edge sealing die, and the air inlet channel and the air bag channels are sealed and separated by the high-frequency machine, so that all the air bag monomers of the air bag are independent from each other, namely the air bag monomers are not communicated. And (4) sealing each air bag monomer independently through the operation of the step four, and even if a single air bag monomer is damaged, the integral bearing capacity and elastic buffering performance of the TPU air bag are not influenced. In the fourth step, the current of the high frequency machine is 0.8-1.2A, the current-applying time is 20-40S, and the temperature is 140-. The operation of the fourth step is simple, the production efficiency is high, and the time is short.
An air leakage prevention TPU airbag is prepared by the preparation method of the airbag.
The invention has the beneficial effects that: the invention discloses an air leakage preventing TPU airbag and a preparation method thereof. The preparation method is simple and convenient to operate, low in production cost and high in production efficiency, the air bag prepared by the method is high in overall bearing capacity, elastic, impact-resistant, bending-resistant and not prone to air leakage, the overall bearing and buffering performance of the air bag is not affected even if a single air bag monomer is damaged, and safety is high.
Drawings
FIG. 1 is a graph showing the effect of the present invention on an air blastula.
FIG. 2 is a schematic structural diagram of the air blastula of the present invention.
FIG. 3 is a sectional view of the blastocyst of the present invention.
The reference signs are: 1-upper layer airbag, 2-lower layer airbag, 3-airbag monomer, 4-airbag channel, 5-air inlet channel, 6-edge sealing connecting part, 31-first airbag cavity, 32-second airbag cavity, 7-elastic fabric layer and 8-cloth layer.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
As a preferred embodiment of the present invention, as shown in fig. 1 to 3, the airbag blank of the present invention includes an upper airbag 1 and a lower airbag 3 disposed on a lower surface of an upper airbag 2, a plurality of airbag monomers 3 are disposed between the upper airbag 1 and the lower airbag 2, the airbag monomers 3 are arranged into a plurality of airbag monomer groups, the airbag monomers 3 in each airbag monomer group are sequentially arranged, airbag channels 4 are preset between adjacent airbag monomers 3 in the same airbag monomer group and between adjacent airbag monomer groups, the airbag blank is preset with at least one air inlet channel 5, the airbag monomers 3 are communicated with the air inlet channel 5, the air inlet channel 5 is used for communicating with the outside, the upper airbag 1 and the lower airbag 2 are attached and provided with an edge sealing connection portion 6, and the edge sealing connection portion 6 surrounds the airbag monomers 3, An air bag passage 4 and an intake passage 5. Specifically, the upper layer airbag 1 is provided with a plurality of first airbag cavities 31, and the first airbag cavities 31 are formed by upward bulges of partial areas of the upper layer airbag 1; the lower layer airbag 2 is provided with a plurality of second airbag cavities 32, and the second airbag cavities 32 are formed by protruding part of the area of the lower layer airbag 2 downwards. The first air bag cavity 31 is communicated with the corresponding second air bag cavity 32 to form the air bag single body 3.
Further, an air inlet channel 5 is preset in the TPU air bag blank, and an outlet of the air inlet channel 5 is arranged on an air bag monomer 3 located at the edge of the air bag blank.
Furthermore, adjacent airbag monomer groups are communicated through one or more airbag channels 4, and two ends of each airbag channel 4 are respectively arranged on two airbag monomers 3 of different airbag monomer groups.
Example 1
A preparation method of an anti-air leakage TPU airbag comprises the following steps:
preparing a surface layer material and a bottom layer material required by manufacturing the air bag;
step two, respectively carrying out die punching treatment on the surface layer material and the bottom layer material to obtain an upper layer air bag 1 and a lower layer air bag 2;
step three, laminating the upper layer airbag 1 and the lower layer airbag 3, and performing pre-mould pressing to obtain an airbag blank;
step four, inflating the airbag blank obtained in the step three, and performing secondary mould pressing on the inflated airbag blank to obtain the airbag;
and step five, performing edge cutting and shaping treatment on the airbag obtained in the step four to obtain the finished airbag.
Further, surface course material and bottom material are the TPU membrane, the upper surface of surface course material is provided with elasticity precoat 7, the lower surface of bottom material is provided with bed of cloth 8.
The second step comprises the following specific operations: and (2) placing the surface layer material or the bottom layer material into a support frame to be flat, installing a required shape mold on a high-frequency machine, placing the support frame on a hot melting platform of the high-frequency machine, and starting the high-frequency machine to carry out hot-press molding on the surface layer material or the bottom layer material to obtain the upper layer airbag 1 or the lower layer airbag 2.
Wherein, the specific operation of the third step is as follows: and (3) placing the upper layer airbag 1 obtained in the step two on the upper surface of the lower layer airbag 2, fixing the upper layer airbag 1 and the lower layer airbag 2 by adopting a female die and a flat die, then placing the upper layer airbag 1 and the lower layer airbag 2 on a high-frequency machine, using a 1.0A current to generate a high-frequency current of 30S, welding the areas of the upper layer airbag 1 and the lower layer airbag 2 outside the airbag monomer 3, the air inlet channel 5 and the airbag channel 4 together by high-frequency processing to form a sealed edge connecting part 6, and removing the female die and the flat die after cooling to obtain the airbag blank. In this embodiment, an air inlet channel 5 is preset in the airbag blank, an air outlet of the air inlet channel 5 is opened in one of the airbag single bodies 3, and the air inlet channel 5 is directly communicated with one of the airbag single bodies 3 and is communicated with the other airbag single bodies 3 through the airbag single body 3.
The specific operation of the step four is as follows: after an inflating nozzle of an inflating device is inserted into an air inlet channel 5 to inflate, a first edge sealing die is adopted to fix a plurality of air bag monomers 3 communicated with the air inlet channel, the air inlet channel 5 is sealed and separated through a high-frequency machine, then a second edge sealing die is adopted to fix all the air bag monomers 3, and a plurality of air bag channels 4 are sealed and separated through the high-frequency machine, so that all the air bag monomers 3 of an air bag are mutually independent, namely all the air bag monomers are not communicated with each other. In the fourth step, the current of the high frequency machine is 0.8A, the current-applying time is 30S, and the temperature is 150 ℃.
The TPU airbag prepared by the preparation method of example 1 was subjected to a longitudinal tearing force (tensile force per unit finished product), a plane bearing pressure, a tearing strength, a bending property test, and an aging test. The bending performance is measured by adopting a QB/T1471 standard (under the normal temperature condition), the longitudinal tearing force test is measured by adopting a GB/T10654 standard, and the aging test is measured by adopting a GB/T3903.7 standard. The test results of the airbag obtained in example 1 above were: the longitudinal tearing force is 95kg, the plane bearing pressure is 780kg, the tearing strength is 25kg/cm, the aging test time is more than 180h, and the bending performance is more than 80000 times.
Example 2
A preparation method of an anti-air leakage TPU airbag comprises the following steps:
preparing a surface layer material and a bottom layer material required by manufacturing the air bag;
step two, respectively carrying out die punching treatment on the surface layer material and the bottom layer material to obtain an upper layer air bag 1 and a lower layer air bag 2;
step three, laminating the upper layer airbag 1 and the lower layer airbag 2, and performing pre-mould pressing to obtain an airbag blank;
step four, inflating the air bag blank obtained in the step three, and carrying out secondary mould pressing on the inflated air bag blank to obtain the air bag;
and step five, performing edge cutting and shaping treatment on the airbag obtained in the step four to obtain the finished airbag.
Further, surface course material and bottom material are the TPU membrane, the upper surface of surface course material is provided with elasticity precoat 7, the lower surface of bottom material is provided with bed of cloth 8.
The specific operation of the step one is as follows:
wherein, the specific operation of the second step is as follows: fixing the surface layer material or the bottom layer material by adopting a jig, placing the fixed surface layer material or the bottom layer material in a drying oven at the temperature of 160 ℃ for heating and softening for 40S, then placing the softened surface layer material or the softened bottom layer material in a mold of a plastic-absorbing machine, and forming an upper layer air bag 1 or a lower layer air bag 2 under the vacuum negative pressure condition.
The third step comprises the following specific operations: and (3) placing the upper-layer airbag 1 obtained in the step two on the upper surface of the lower-layer airbag 2, fixing the upper-layer airbag 1 and the lower-layer airbag 2 by adopting a female die and a flat die, then placing the upper-layer airbag 1 and the lower-layer airbag 2 on a high-frequency machine, using a 1.0A current to generate a high-frequency current of 30S, welding the upper-layer airbag 1 and the lower-layer airbag 2 in the areas outside the airbag monomer 3, the air inlet channel 5 and the airbag channel 4 together by high-frequency processing to form an edge sealing connection part 6, and removing the female die and the flat die after cooling to obtain the airbag blank.
The specific operation of the step four is as follows: after an inflating nozzle of an inflating device is inserted into an air inlet channel 5 to inflate, a first edge sealing die is adopted to fix a plurality of air bag monomers communicated with the air inlet channel, the air inlet channel 5 is sealed and separated through a high-frequency machine, then a second edge sealing die is adopted to fix all air bag monomers 3, and a plurality of air bag channels 4 are sealed and separated through the high-frequency machine, so that all air bag monomers 3 of an air bag are mutually independent, namely all air bag monomers are not communicated with each other. In the fourth step, the current of the high frequency machine is 1.0A, the current-applying time is 20S, and the temperature is 140 ℃.
Example 3
A preparation method of an anti-air leakage TPU airbag comprises the following steps:
preparing a surface layer material and a bottom layer material required by manufacturing the air bag;
step two, respectively carrying out die punching treatment on the surface layer material and the bottom layer material to obtain an upper layer air bag 1 and a lower layer air bag 2;
step three, laminating the upper layer airbag 1 and the lower layer airbag 2, and performing pre-mould pressing to obtain an airbag blank;
step four, inflating the airbag blank obtained in the step three, and performing secondary mould pressing on the inflated airbag blank to obtain the airbag;
and step five, performing edge cutting and shaping treatment on the airbag obtained in the step four to obtain the finished airbag.
Further, surface course material and bottom material are the TPU membrane, the upper surface of surface course material is provided with elasticity precoat 7, the lower surface of bottom material is provided with bed of cloth 8.
Further, the specific operation of the second step is as follows: fixing the surface layer material or the bottom layer material by adopting a jig, placing the surface layer material or the bottom layer material in an oven with the temperature of 150 ℃ for heating and softening for 40S, then placing the softened surface layer material or the softened bottom layer material on a forming operation table, applying pressure to the surface layer material or the softened bottom layer material through a cold pressing die to carry out die-casting forming, wherein the pressure is 15 kg/square meter and the time is 40S, and obtaining the upper layer airbag 1 or the lower layer airbag 2 after demoulding.
Further, the specific operation of the third step is: and (3) placing the upper layer airbag 1 obtained in the step two on the upper surface of the lower layer airbag 2, fixing the upper layer airbag 1 and the lower layer airbag 2 by adopting a female die and a flat die, then placing the upper layer airbag 1 and the lower layer airbag 2 on a high-frequency machine, using a 1.2A current to generate a high-frequency current of 20S, welding the areas of the upper layer airbag 1 and the lower layer airbag 2 outside the airbag monomer 3, the air inlet channel 5 and the airbag channel 4 together by high-frequency processing to form a sealed edge connecting part 6, and removing the female die and the flat die after cooling to obtain the airbag blank.
Further, the specific operation of the step four is as follows: after an inflating nozzle of an inflating device is inserted into an air inlet channel 5 to inflate, a first edge sealing die is adopted to fix a plurality of air bag monomers 3 communicated with the air inlet channel, the air inlet channel 5 is sealed and separated through a high-frequency machine, then a second edge sealing die is adopted to fix all the air bag monomers 3, and a plurality of air bag channels 4 are sealed and separated through the high-frequency machine, so that all the air bag monomers 3 of an air bag are mutually independent, namely all the air bag monomers are not communicated with each other. In the fourth step, the current of the high frequency machine is 1.0A, the current-applying time is 30S, and the temperature is 150 ℃.
The airbag prepared by the preparation method of the above example 3 was subjected to a longitudinal tearing force (tensile force applied to a unit finished product), a plane bearing pressure, a tearing strength, a bending performance test and an aging test. The test results of the airbag obtained in example 3 above were: the longitudinal tearing force is 92kg, the plane bearing pressure is 770kg, the tearing strength is 20kg/cm, the aging test time is more than 180h, and the bending performance is more than 80000 times.
Example 4
A preparation method of an anti-air leakage TPU airbag comprises the following steps:
preparing a surface layer material and a bottom layer material required by manufacturing the air bag;
step two, respectively carrying out die punching treatment on the surface layer material and the bottom layer material to obtain an upper layer air bag 1 and a lower layer air bag 2;
step three, laminating the upper layer airbag 1 and the lower layer airbag 2, and then performing pre-mould pressing to obtain an airbag blank;
step four, inflating the airbag blank obtained in the step three, and performing secondary mould pressing on the inflated airbag blank to obtain the airbag;
and step five, performing edge cutting and shaping treatment on the air bag obtained in the step four to obtain a finished air bag product.
Further, the surface layer material and the bottom layer material are TPU films.
The second step comprises the following specific operations: and (2) placing the surface layer material or the bottom layer material into a support frame to be flat, installing a required shape mold on a high-frequency machine, placing the support frame on a hot melting platform of the high-frequency machine, and starting the high-frequency machine to carry out hot-press molding on the surface layer material or the bottom layer material to obtain the upper layer airbag 1 or the lower layer airbag 2.
The third step comprises the following specific operations: and (3) placing the upper layer airbag 1 obtained in the step two on the upper surface of the lower layer airbag 2, fixing the upper layer airbag 1 and the lower layer airbag 2 by adopting a female die and a flat die, then placing the upper layer airbag 1 and the lower layer airbag 2 on a high-frequency machine, using a 1.0A current to generate a high-frequency current of 30S, welding the areas of the upper layer airbag 1 and the lower layer airbag 2 outside the airbag monomer 3, the air inlet channel 5 and the airbag channel 4 together by high-frequency processing to form a sealed edge connecting part 6, and removing the female die and the flat die after cooling to obtain the airbag blank.
Wherein, the specific operation of the fourth step is as follows: after an inflating nozzle of an inflating device is inserted into an air inlet channel 5 to inflate, a first edge sealing die is adopted to fix a plurality of air bag monomers 3 communicated with the air inlet channel 5, the air inlet channel 5 is sealed and separated through a high-frequency machine, then a second edge sealing die is adopted to fix all the air bag monomers 3, and a plurality of air bag channels 4 are sealed and separated through the high-frequency machine, so that all the air bag monomers 3 of an air bag are mutually independent, namely all the air bag monomers are not communicated with each other. In the fourth step, the current of the high frequency machine is 1.2A, the current-applying time is 30S, and the temperature is 150 ℃.
Example 5
A preparation method of an anti-air leakage TPU airbag comprises the following steps:
preparing a surface layer material and a bottom layer material required by manufacturing the air bag;
step two, respectively carrying out die punching treatment on the surface layer material and the bottom layer material to obtain an upper layer air bag 1 and a lower layer air bag 2;
step three, laminating the upper layer airbag 1 and the lower layer airbag 2, and performing pre-mould pressing to obtain an airbag blank;
step four, inflating the air bag blank obtained in the step three, and carrying out secondary mould pressing on the inflated air bag blank to obtain the air bag;
and step five, performing edge cutting and shaping treatment on the air bag obtained in the step four to obtain a finished air bag product.
Further, surface course material and bottom material are the TPU membrane, the upper surface of surface course material is provided with elasticity precoat 7, the lower surface of bottom material is provided with bed of cloth 8.
Further, the specific operation of the second step is as follows: fixing the surface layer material or the bottom layer material by adopting a jig, placing the fixed surface layer material or the bottom layer material in an oven at the temperature of 130-180 ℃, heating and softening for 30-60 seconds, then placing the softened surface layer material or the softened bottom layer material in a mold of a plastic-absorbing machine, and forming an upper layer air bag 1 or a lower layer air bag 2 under the vacuum negative pressure condition.
Further, the specific operation of the third step is as follows: and (2) placing the upper layer airbag 1 obtained in the step two on the upper surface of the lower layer airbag 2, fixing the upper layer airbag 1 and the lower layer airbag 2 by adopting a female die and a flat die, then placing the upper layer airbag 1 and the lower layer airbag 2 on a high-frequency machine, using 0.8-1.2A current to generate high-frequency current of 10-40S, welding the areas of the upper layer airbag 1 and the lower layer airbag 2 except for the airbag monomer 3, the air inlet channel 5 and the airbag channel 4 together by high-frequency processing to form an edge sealing connecting part 6, and removing the female die and the flat die after cooling to obtain the airbag blank.
Further, the specific operation of the step four is as follows: after an inflating nozzle of an inflating device is inserted into the air inlet channel 5 for inflating, all the airbag monomers are fixed by adopting a second edge sealing die, and the airbag channels 4 are sealed and isolated by a high-frequency machine, so that all the airbag monomers 3 of the airbag are mutually independent, namely all the airbag monomers are not mutually communicated. In the fourth step, the current of the high frequency machine is 1.2A, the current-applying time is 40S, and the temperature is 160 ℃.
In the invention, the performances of the TPU airbag finished products prepared by the preparation methods of the embodiments 1-5 all meet the shipment standard, wherein the longitudinal tearing force is more than 85kg, the plane bearing pressure is in the range of 600-800kg, the tearing strength is more than 17kg/cm, the aging performance is more than 168h, and the folding performance is more than 80000 times. Therefore, the air bag prepared by the preparation method of the TPU air bag provided by the invention has the advantages of excellent bearing capacity, tear resistance and bending resistance, long service life and low possibility of air leakage.
The above specific examples are further illustrative of the technical solutions and advantages of the present invention, and are not intended to limit the embodiments. It will be apparent to those skilled in the art that any obvious alternative is within the scope of the invention without departing from the inventive concept.
Claims (10)
1. A preparation method of an air leakage prevention TPU airbag is characterized by comprising the following steps: the method comprises the following steps:
preparing a surface layer material and a bottom layer material required by manufacturing the air bag;
step two, respectively carrying out die punching treatment on the surface layer material and the bottom layer material to obtain an upper layer air bag and a lower layer air bag;
step three, laminating the upper layer airbag and the lower layer airbag, and then performing pre-mould pressing to obtain an airbag blank;
step four, inflating the air bag blank obtained in the step three, and carrying out secondary mould pressing on the inflated air bag blank to obtain the air bag;
and step five, performing edge cutting and shaping treatment on the airbag obtained in the step four to obtain the finished airbag.
2. The method for preparing an anti-leakage TPU airbag according to claim 1, characterized in that: the surface layer material and the bottom layer material are TPU films.
3. The method for preparing the air leakage preventing TPU airbag according to claim 2, characterized in that: the gasbag embryo includes upper gasbag and sets up in the lower floor's gasbag of upper gasbag lower surface, be provided with a plurality of gasbag monomers between upper gasbag and the lower floor's gasbag, it is a plurality of gasbag monomer groups to arrange into the gasbag monomer, and a plurality of gasbag monomers in every gasbag monomer group are arranged in proper order, have preset the gasbag passageway between the adjacent gasbag monomer and between the adjacent gasbag monomer group in being located same gasbag monomer group, at least one inlet channel has been preset to TPU gasbag embryo, gasbag monomer and inlet channel intercommunication, inlet channel is used for being linked together with the external world, upper gasbag and lower floor's gasbag laminating is equipped with the banding connecting portion, the banding connecting portion is around in gasbag monomer, gasbag passageway and inlet channel.
4. An air leakage preventing TPU airbag preparation method according to claim 3, characterized in that: the specific operation of the second step is as follows: and (3) placing the surface layer material or the bottom layer material into a support frame to be flat, installing a required shape mold on a high-frequency machine, placing the support frame on a hot melting platform of the high-frequency machine, and starting the high-frequency machine to carry out hot-press molding on the surface layer material or the bottom layer material to obtain the upper layer airbag or the lower layer airbag.
5. An air leakage preventing TPU airbag preparation method according to claim 3, characterized in that: the specific operation of the second step is as follows: fixing the surface layer material or the bottom layer material by adopting a jig, placing the fixed surface layer material or the bottom layer material in an oven with the temperature of 130-180 ℃ for heating and softening for 30-60 seconds, then placing the softened surface layer material or the softened bottom layer material in a mold of a plastic-sucking machine, and forming an upper layer air bag or a lower layer air bag under the vacuum negative pressure condition.
6. An air leakage preventing TPU airbag preparation method according to claim 3, characterized in that: the specific operation of the second step is as follows: fixing the surface layer material or the bottom layer material by using a jig, placing the surface layer material or the bottom layer material in an oven at the temperature of 130-180 ℃, heating and softening for 30-60 seconds, then placing the softened surface layer material or the softened bottom layer material on a forming operation table, applying pressure to the surface layer material or the softened bottom layer material through a cold pressing mold, performing die-casting forming on the surface layer material or the softened bottom layer material, wherein the pressure is 5-20kg per square meter and the time is 30-60 seconds, and demolding to obtain the upper layer airbag or the lower layer airbag.
7. An air leakage preventing TPU airbag preparation method according to claim 3, characterized in that: the third step comprises the following specific operations: and (3) placing the upper-layer airbag obtained in the step two on the upper surface of the lower-layer airbag, fixing the upper-layer airbag and the lower-layer airbag by adopting a female die and a flat die, then placing the upper-layer airbag and the lower-layer airbag on a high-frequency machine, using 0.8-1.2A current to generate high-frequency current of 10-40S, welding the upper-layer airbag and the lower-layer airbag in regions except for the airbag monomer, the air inlet channel and the airbag channel together by high-frequency processing to form a sealed edge connecting part, and removing the female die and the flat die after cooling to obtain the airbag blank.
8. An air leakage preventing TPU airbag preparation method according to claim 3, characterized in that: the specific operation of the step four is as follows: after an inflating nozzle of an inflating device is inserted into an air inlet channel to inflate, a first edge sealing die is adopted to fix a plurality of air bag monomers communicated with the air inlet channel, the air inlet channel is sealed and separated through a high-frequency machine, then a second edge sealing die is adopted to fix all the air bag monomers, the air inlet channel and the air bag channels are sealed and separated through the high-frequency machine, and all the air bag monomers of the air bag are mutually independent.
9. The preparation method of the air leakage prevention TPU airbag according to claim 3, characterized in that: the specific operation of the step four is as follows: after an inflating nozzle of the inflating device is inserted into the air inlet channel for inflating, all the air bag monomers are fixed by adopting a second edge sealing die, and the air inlet channel and the air bag channels are sealed and separated by a high-frequency machine, so that all the air bag monomers of the air bag are mutually independent.
10. The utility model provides a TPU gasbag of leak protection gas which characterized in that: the airbag is manufactured by the manufacturing method of the anti-leakage TPU airbag disclosed by claims 1-9.
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| CN212530438U (en) * | 2020-04-05 | 2021-02-12 | 胡吉万 | Air bag type box board |
| CN217478010U (en) * | 2022-04-06 | 2022-09-23 | 广东中鼎科技发展有限公司 | TPU air sac embryo and air sac |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313519A (en) * | 2018-03-21 | 2018-07-24 | 东莞市中鼎塑料制品有限公司 | One kind is exempted to inflate bilateral air bag and preparation method thereof |
| CN109760323A (en) * | 2019-01-22 | 2019-05-17 | 东莞市厚街宝智鞋材厂 | A kind of insole and its manufacture craft of double-sides belt independent air bags |
| CN110901113A (en) * | 2019-03-21 | 2020-03-24 | 东莞市佳栓实业有限公司 | Production process of antigravity balance massage type buffering convection air bag and air bag cushion |
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