CN115256999A - Preparation method of microcellular foamed particle composite elastic material - Google Patents

Preparation method of microcellular foamed particle composite elastic material Download PDF

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Publication number
CN115256999A
CN115256999A CN202210945871.5A CN202210945871A CN115256999A CN 115256999 A CN115256999 A CN 115256999A CN 202210945871 A CN202210945871 A CN 202210945871A CN 115256999 A CN115256999 A CN 115256999A
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section
pressing
fabric
hot pressing
hot
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秦柳
马文良
梁宇光
谭林立
陶广庆
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Ningbo Gmf Technology Co ltd
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Ningbo Gmf Technology Co ltd
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Priority to CN202210945871.5A priority Critical patent/CN115256999A/en
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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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a preparation method of a microporous foamed particle composite elastic material of a single-layer fabric or a double-layer fabric, which is carried out by adopting a composite elastic material preparation device, wherein the device comprises a first fabric glue spraying unit, a foamed particle spraying machine, a primary pressing roller, a hot pressing and shaping unit and a winding machine which are sequentially arranged, the first fabric glue spraying unit comprises a first unreeling machine and a first glue spraying machine, the foamed particle spraying machine is used for spraying microporous foamed particles on a bottom-layer fabric, and the bottom-layer fabric sequentially passes through the first unreeling machine, the first glue spraying machine, the foamed particle spraying machine, the primary pressing roller, the hot pressing and shaping unit and the winding machine. Compared with the traditional preparation process, the invention does not need the procedures of high-temperature forming of TPU foaming particles, cutting of pieces by a slicer and the like, saves the cost, has uniform thickness of the prepared material, improves the finished product rate of products, realizes continuous operation, and has simple preparation process and high finished product rate, and the thickness of the prepared material can be less than 1 mm.

Description

Preparation method of microcellular foamed particle composite elastic material
Technical Field
The invention relates to the technical field of elastic composite material production, in particular to a preparation method of a microcellular foamed particle composite elastic material.
Background
Thermoplastic polyurethane elastomers (TPU) are elastomers that can be plasticized by heating and can be dissolved in solvents, and are mainly classified into polyester type and polyether type; is (AB) n type block linear polymer, A is polyester or polyether with high molecular weight (1000-6000), B is diol containing 2-12 straight chain carbon atoms, and the chemical structure between AB chain segments is diisocyanate. TPU is a high molecular material between rubber and plastic, can be heated and plasticized, has no or little crosslinking on a chemical structure, and has basically linear molecules but certain physical crosslinking; the thermoplastic polyurethane rubber is crosslinked by intermolecular hydrogen bonds or slightly crosslinked between macromolecular chains, and the two crosslinking structures have reversibility along with the increase or decrease of temperature, so that the intermolecular force is weakened in a molten state or a solution state, and the intermolecular force is strongly connected together after cooling or solvent volatilization, thereby recovering the performance of the original solid. The TPU has excellent mechanical properties, good abrasion resistance, low-temperature resistance, aging resistance, high-strength impact resistance and tearing resistance, and high extensibility and tensile strength. It is nontoxic, environment-friendly, and has strong wear resistance (more wear resistance than POM and nylon); the rubber has high softness, silence, higher elastic modulus than rubber with similar hardness, small swelling in solvent and fuel oil and good weather resistance.
The TPU composite fabric is a composite material formed by compounding TPU films on various fabrics, and a novel fabric is obtained by combining the characteristics of the TPU films and the fabrics. The existing production methods of the TPU composite fabric generally comprise two methods, wherein one method is post-lamination, namely a TPU film is prepared and then glued and laminated with the fabric, and the other method is on-line lamination, namely the TPU film is directly cast on the fabric to prepare the composite fabric. The processing technology of the cast film is that resin is melted and plasticized by an extruder, extruded from a nose through a slit die orifice, so that a molten material is tightly attached to a cooling roller, and then stretched, cut and coiled; the casting method is easy to realize large-scale, high-speed and automatic molding, and the produced film has better transparency, high thickness precision, good uniformity and higher strength than a blown film. However, the composite fabric prepared by the two methods is actually compounded by the TPU film and the fabric, the TPU film does not have microcellular foaming, the material is thin, the specific gravity is high, the material is not soft and comfortable, the interior does not have a microscopic bubble hole structure, and the heat preservation property is poor compared with the heat preservation property. The elasticity of the TPU film and fabric composite fabric is poor.
At present, various microporous foaming particles are developed on the market and are prepared by permeating supercritical carbon dioxide and physically foaming by a temperature and pressure rising and reducing method, the prepared foaming particles contain carbon dioxide gas, the particles have the characteristics of high resilience, wear resistance, strong mechanical property, heat insulation and the like, and the microporous structures uniformly distributed in the microporous foaming material not only have good heat resistance and size stability, but also can reduce the density of the material and simultaneously play a role in enhancing and toughening. At present, there are reports of preparing microcellular foamed particles from elastic materials such as TPU, PA (nylon), TPEE (thermoplastic polyester elastomer), TPE (polyvinyl chloride), PP (polypropylene), and the like.
The TPU physical microporous foaming material is prepared from polyether TPU granules by a supercritical carbon dioxide physical microporous foaming method. Putting the pretreated TPU granules into a high-pressure kettle, evacuating the air in the kettle body, filling carbon dioxide gas into the kettle, raising the temperature and the pressure of the kettle body to make the temperature higher than 31.1 ℃, the pressure higher than 7.38MPa, and making the carbon dioxide in the condition reach a supercritical state. The supercritical carbon dioxide has strong solvating capacity and excellent mass transfer performance as other supercritical fluids, has zero surface tension and super-strong permeability, and can easily permeate into TPU particles. Maintaining the state for a period of time until the carbon dioxide in the TPU reaches a full saturation state to form TPU/CO 2 Is a homogeneous system of (2). Then, the saturated state and homogeneous phase system is broken through by rapid pressure relief, a large number of micro bubble nuclei can be formed inside TPU particles, then, gas inside the TPU particles is rapidly heated and escapes in a large amount, and the large number of micro bubble nuclei inside the TPU particles are rapidly expanded and grown up, so that the TPU particles are expanded to form TPU foamed particles. Then the tiny air bubbles in the particles are stably shaped under certain temperature and pressure to prepare the productPreparing the final TPU microporous foamed particles. The foaming process is carried out by subjecting the TPU/CO 2 The method comprises four stages of homogeneous system formation, bubble nucleus formation, bubble growth and bubble shaping, wherein the four foaming stages have important influences on the bubble nucleus formation quantity, particle density, rebound resilience, foaming multiplying power and apparent characteristics of TPU foaming particles. Therefore, the foaming process of the TPU only uses carbon dioxide as a foaming agent, the foaming process is green and environment-friendly, the particles are a physical expansion change process, and no harmful substance is left in the manufacturing process. The foamed particles are compression molded by high temperature steam.
At present, the TPU microcellular foaming cloth adopts a plate formed by TPU foaming particles with the thickness of 2cm, the plate with the thickness of 2cm is cut into thin slices with the thickness of about 3-4mm by a slicer, the surface of a TPU sheet is treated by a treating agent, glue is coated on the surface of the TPU sheet to be bonded with the cloth, and then the cutting treatment is carried out. The preparation process is complicated and comprises the steps of foaming TPU, forming a plate by high-temperature steam of TPU foaming particles, cutting the TPU plate into thin slices, treating the thin slices by using a treating agent, brushing glue, adhering cloth, cutting and the like. The process cuts the TPU foamed plate with the thickness of 2cm into thin slices by a slicer, because the TPU foamed plate has high elasticity, the problems of uneven thickness, hole breakage, high rejection rate and the like can occur during slicing, the thickness can only be about 3-4mm, and the thin slice with the thickness of 1-2mm is difficult to realize; and the process is difficult to realize the continuous operation production of the production line.
Disclosure of Invention
The invention aims to solve the problems and provide two preparation methods of microporous foamed particle composite elastic materials, wherein one method is used for preparing the composite elastic material with only a single-layer fabric, and the other method is used for preparing the composite elastic material with two layers of fabrics, namely a bottom layer and a top layer.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a microporous foamed particle composite elastic material of a single-layer fabric comprises the following steps:
step 1, taking a bottom layer fabric, blanking through a first unreeling machine, uniformly spraying glue on the bottom layer fabric by a first glue spraying machine, spraying microporous foaming particles onto the bottom layer fabric by a foaming particle spraying machine, and adhering the microporous foaming particles to the bottom layer fabric by the glue on the bottom layer fabric; the bottom layer fabric is made of cotton cloth, linen, silk, woolen cloth, leather, chemical fiber, blended fabric or modal material, or is a hot melt adhesive film;
step 2, primarily pressing the bottom layer fabric adhered with the microcellular foam particles by a primary pressing roller, and then carrying out hot pressing and shaping by a hot pressing and shaping unit, so that the microcellular foam particles and the bottom layer fabric, and the microcellular foam particles and the particles are tightly adhered together;
the hot pressing and shaping unit comprises four sections of hot pressing modules, the temperatures of the first section, the second section, the third section and the fourth section of hot pressing modules are respectively set to be 80-180 ℃, 80-180 ℃ and 80-180 ℃, the temperature of the second section is 0-30 ℃ higher than that of the first section, the temperature of the third section is 0-20 ℃ higher than that of the second section, and the temperature of the fourth section is 0-20 ℃ lower than that of the third section; the pressing gaps of the first section, the second section, the third section and the fourth section of the hot-pressing module are respectively set to be 0.5-50mm, 0.5-50mm and 0.5-50mm; the pressing gap of the shaping module is 0.5-50mm;
and 3, winding the obtained composite material by using a winding machine.
A preparation method of a microporous foaming particle composite elastic material of a double-layer fabric comprises the following steps:
step 1, taking a bottom layer fabric, blanking through a first unreeling machine, uniformly spraying glue on the bottom layer fabric by a first glue spraying machine, spraying microporous foaming particles onto the bottom layer fabric by a foaming particle spraying machine, and adhering the microporous foaming particles to the bottom layer fabric by the glue on the bottom layer fabric; taking the top layer fabric, discharging through a second unreeling machine, and uniformly spraying glue on the top layer fabric through a second glue spraying machine; the bottom layer fabric is made of cotton cloth, linen, silk, wool, leather, chemical fiber, blended fabric or modal material or is a hot melt adhesive film, and the top layer fabric is made of cotton cloth, linen, silk, wool, leather, chemical fiber, blended fabric or modal material;
step 2, covering the top layer fabric above the bottom layer fabric adhered with the microcellular foam particles, then preliminarily pressing the top layer fabric by a preliminary pressing roller, and then carrying out hot pressing and shaping by a hot pressing and shaping unit to enable the microcellular foam particles to be tightly adhered to the bottom layer fabric and the top layer fabric and the microcellular foam particles to be tightly adhered to the particles;
the hot pressing and shaping unit comprises four sections of hot pressing modules, the temperatures of the first section, the second section, the third section and the fourth section of hot pressing modules are respectively set to be 80-180 ℃, 80-180 ℃ and 80-180 ℃, the temperature of the second section is 0-30 ℃ higher than that of the first section, the temperature of the third section is 0-20 ℃ higher than that of the second section, and the temperature of the fourth section is 0-20 ℃ lower than that of the third section; the pressing gaps of the first section, the second section, the third section and the fourth section of the hot-pressing module are respectively set to be 0.5-50mm, 0.5-50mm and 0.5-50mm; the pressing gap of the shaping module is 0.5-50mm;
and 3, winding the obtained composite material by using a winding machine.
The preparation method of the microporous foamed particle composite elastic material of the single-layer fabric is carried out by adopting a composite elastic material preparation device, the composite elastic material preparation device comprises a first fabric glue spraying unit, a foamed particle spraying machine, a preliminary pressing roller, a hot pressing and sizing unit and a winding machine which are sequentially arranged, the first fabric glue spraying unit comprises a first unreeling machine and a first glue spraying machine, the foamed particle spraying machine is used for spraying microporous foamed particles onto the bottom-layer fabric, and the bottom-layer fabric sequentially passes through the first unreeling machine, the first glue spraying machine, the foamed particle spraying machine, the preliminary pressing roller, the hot pressing and sizing unit and the winding machine, so that the microporous foamed particles and the bottom-layer fabric and the microporous foamed particles and the particles are mutually bonded together to form the composite elastic material; the hot pressing and shaping unit comprises a plurality of sections of hot pressing modules and shaping modules which are arranged in a flow line mode, the hot pressing modules are roller hot pressing modules or flat plate hot pressing modules, and the shaping modules are roller shaping modules.
In the preparation method of the microporous foamed particle composite elastic material of the single-layer fabric, the hot-pressing module is a roller hot-pressing module, each section of the hot-pressing module comprises a plurality of heating pressing rollers which are horizontally distributed in parallel and a plurality of heating carrier rollers which are horizontally distributed in parallel, the heating pressing rollers are contacted with the heating carrier rollers, the heating pressing rollers are fixedly connected to a hot-pressing roller base, a hot-pressing roller up-and-down moving guide rail is arranged on the base, the hot-pressing roller base is in sliding connection with the hot-pressing roller up-and-down moving guide rail, so that the hot-pressing roller base can move up and down in the hot-pressing roller up-and-down moving guide rail to drive the hot-pressing roller to move up and down; alternatively, the first and second liquid crystal display panels may be,
the hot pressing die set is a flat plate hot pressing die set, each section of hot pressing die set comprises a hot pressing flat plate and a hot pressing supporting plate, flat plate up-and-down moving guide rails and flat plate left-and-right moving guide rails are arranged above and below the base, the hot pressing flat plate or the hot pressing supporting plate is fixedly arranged on a corresponding flat plate support, the flat plate support is in sliding connection with the corresponding flat plate up-and-down moving guide rails, the flat plate up-and-down moving guide rails move up and down and drive the hot pressing flat plate or the hot pressing supporting plate to move up and down, the flat plate up-and-down moving guide rails are in sliding connection with the flat plate left-and-right moving guide rails, and the flat plate up-and-down moving guide rails can move left and right in the flat plate left-and-right moving guide rails so as to move the position of the hot pressing die set left and right in the horizontal direction;
the shaping module comprises a plurality of shaping pressing rollers and a plurality of shaping carrier rollers, the shaping pressing rollers are in contact with the shaping carrier rollers, and the fabric passes through between the heating pressing rollers and the heating carrier rollers or between the hot pressing flat plate and the hot pressing supporting plate and between the shaping pressing rollers and the shaping carrier rollers;
the hot-pressing and shaping unit comprises four sections of hot-pressing modules.
The preparation method of the microporous foamed particle composite elastic material of the double-layer fabric is carried out by adopting the preparation device of the composite elastic material, the preparation device of the composite elastic material further comprises a second fabric glue spraying unit, the second fabric glue spraying unit comprises a second unreeling machine and a second glue spraying machine, the second fabric glue spraying unit and the first fabric glue spraying unit are arranged in parallel, the second unreeling machine is used for outputting the top layer fabric, the second glue spraying machine is used for spraying glue on the lower surface of the top layer fabric, the top layer fabric and the bottom layer fabric adhered with the microporous foamed particles are converged at a primary pressing roller and are compounded above the foamed particle layer, and then the compounded bottom layer fabric and the top layer fabric are subjected to hot pressing and shaping unit and a winding machine.
In the above method for preparing a microporous foamed particle composite elastic material of a single-layer fabric or a double-layer fabric, the apparatus for preparing a composite elastic material further comprises a rolling buffer unit disposed before the hot-pressing and sizing unit and/or after the hot-pressing and sizing unit;
rolling buffer unit includes a pair of rolling roller that reciprocates and corresponds to the rolling roller of rolling roller reciprocates the guide rail, the rolling roller with rolling roller reciprocates guide rail sliding connection, can be in rolling roller reciprocates the upper and lower round trip movement of guide rail.
In the preparation method of the microporous foamed particle composite elastic material of the single-layer fabric or the double-layer fabric, the preparation device of the composite elastic material further comprises a cutting and stamping unit arranged in front of the winding machine, and the cutting and stamping unit comprises a stamping knife, a stamping knife up-and-down moving guide rail and a stamping base plate.
In the preparation method of the microporous foamed particle composite elastic material of the single-layer fabric or the double-layer fabric, in the step 3, the composite material obtained in the step 2 is rolled up by the rolling buffer unit, then is punched into a set product by the cutting and punching unit, and then is rolled up by the rolling machine.
In the preparation method of the microporous foamed particle composite elastic material of any one of the single-layer fabric and the double-layer fabric, the microporous foamed particles are TPU, PA, TPEE, TPE or PP microporous foamed particles;
preferably, the particle diameter of the microcellular foaming particles is 3-10mm, and the density is 0.1-0.25g/cm 3 Hardness 10-50HC; the glue is environment-friendly PU glue or TPU hot melt adhesive;
preferably, the thickness of the glue on the bottom layer fabric is 100-1000um, and the thickness of the glue on the top layer fabric is 100-1000um.
In the preparation method of the microporous foaming particle composite elastic material of any one of the single-layer fabric or the double-layer fabric, the diameter of a heating pressing roller is 4-5mm, and the diameter of a sizing pressing roller is 45-55mm or 50mm;
the temperatures of the first section, the second section, the third section and the fourth section of the hot-pressing module are respectively set to be 130-150 ℃, 150-160 ℃ and 140-150 ℃, the temperature of the second section is 5-20 ℃ higher than that of the first section, the temperature of the third section is 0-10 ℃ higher than that of the second section, and the temperature of the fourth section is 5-10 ℃ lower than that of the third section; the pressing gaps of the first section, the second section, the third section and the fourth section of the hot-pressing module are respectively set to be 1-2mm, 1.5-3mm and 1.5-3mm; the pressing gap of the shaping module is 1.5-3mm, and the ambient temperature is 0-11 ℃, preferably 0-10 ℃.
The particles sprayed by the expanded particle spray can be a single color, a mixture of colors to form a pattern.
In the invention, the elastic composite material with the upper and lower fabrics and the middle made of the foaming material can be prepared by the simultaneous existence of the bottom fabric and the top fabric. If the bottom layer of the fabric is singly arranged, the elastic composite material with the upper layer made of the foaming material and the lower layer made of the fabric can be prepared. If a single bottom fabric exists and the bottom fabric is replaced by the hot melt adhesive film, a slice or a foaming plate made of pure foaming materials is prepared.
The hot pressing and shaping unit tightly presses the foaming particles and the fabric, and the particles together, and after hot pressing, the oval foaming particles are compressed into a round cake shape, the thickness of the surface layer can be controlled by adjusting the pressure and the particle size of the foaming particles, and the material with the thickness of more than 0.5mm can be prepared. The hot pressing and shaping unit is a multi-section independently controlled hot pressing module, each section of hot pressing module can be independently adjusted at 80-180 ℃, the pressing gap is independently adjusted at 0.5-50mm (determining the thickness of the composite material), and when the pressing gap is set to be larger, the composite material is a TPU foamed plate. The hot pressing module can adopt roller pressing or flat plate pressing, and the diameter of the heating pressing roller is 4-5mm. The fabric is shaped by cooling and extruding by a plurality of groups of rollers or laminated plates, and the temperature can be adjusted from-5 ℃ to 25 ℃.
The invention has the beneficial effects that:
the invention provides a novel preparation method of a microporous foamed particle composite elastic material, which can be used for preparing a composite elastic material such as a TPU composite elastic material, changes the traditional process of firstly producing a TPU foamed plate, cutting the TPU foamed plate into thin sheets by a slicer and then compounding the fabrics, innovatively and directly adopts TPU foamed particles to compound the fabrics, omits the step of slicing the TPU foamed plate, and reduces the problems of uneven thickness, broken holes, high rejection rate and the like of the sheets in the traditional process. Compared with the traditional preparation process, the invention does not need the procedures of high-temperature forming of TPU foaming particles, cutting of pieces by a slicer and the like, saves the cost, has uniform thickness of the prepared material, improves the finished product rate of products, realizes continuous operation, has simple preparation process, high automation degree and high finished product rate, can realize the thickness of the prepared material below 1mm and even can realize the ultrathin thickness of 0.5mm, and is limited by the traditional process that the thickness of the cut pieces of the slicer can only be about 3-4mm and the finished product rate is lower. The process can be used for preparing elastic fabrics of single-layer fabrics or double-layer fabrics, and simultaneously preparing sheets and plates of TPU foaming materials, and can be used for continuously preparing products such as insoles, uppers, yoga mats, mattresses, cushions, TPU foaming plates and the like.
The TPU composite fabric prepared by the method has good elasticity and rebound resilience up to more than 60%; the TPU foaming material has good heat insulation performance, and the heat conductivity coefficient of the TPU foaming material is as low as 0.031W/(m.k); the fabric has good waterproof performance, and the internal cellular structure of the TPU foamed particles is a closed-cell structure; meanwhile, the TPU has good skin-friendly and bacteriostatic properties, and the materials and the preparation process are environment-friendly and have no harmful substance residues, so that the TPU is safer and more comfortable to use.
Drawings
FIG. 1 is a schematic structural view of an apparatus for producing microcellular foamed particle composite elastic materials according to example 1 of the present invention.
FIG. 2 is a schematic view showing the structure of an apparatus for producing a microcellular foamed particulate composite elastic material according to an embodiment of example 1.
Fig. 3 is a schematic view showing the structure and connection relationship of the hot pressing and sizing unit, the winding buffer unit and the cutting and punching unit in one embodiment of example 1.
Fig. 4 is a schematic structural diagram of a flat plate hot press module according to an embodiment of example 1.
FIG. 5 is a schematic representation of the change in state of the composite elastic material of the single layer facing in example 2 before and after forming.
FIG. 6 is a schematic view of the molded structure of the elastic composite material of the two-layer fabric in example 3.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to be limiting.
The experimental procedures in the following examples are conventional unless otherwise specified.
Example 1 apparatus for producing microcellular foamed particle composite elastic material
The device for preparing the microcellular foamed particle composite elastic material shown in figure 1 mainly comprises a first fabric glue spraying unit, a foamed particle spraying machine 1, a primary pressing roller 2, a hot pressing and shaping unit and a winding machine 3 which are sequentially arranged. The first fabric glue spraying unit comprises a first unreeling machine 4 and a first glue spraying machine 5, the first unreeling machine 4 is used for outputting a bottom fabric, the first glue spraying machine 5 is used for spraying glue on the bottom fabric, the foaming particle spraying machine 1 is used for spraying microporous foaming particles on the bottom fabric, the bottom fabric sequentially passes through the first unreeling machine 4, the first glue spraying machine 5, the foaming particle spraying machine 1, the primary pressing roller 2, the hot pressing and shaping unit and the winding machine 3, and the microporous foaming particles and the bottom fabric and the microporous foaming particles and the particles are mutually adhered to form the composite elastic material.
In some embodiments, the hot-pressing and shaping unit includes a plurality of sections of hot-pressing modules 6 and shaping modules 7 arranged in a flow line, the hot-pressing modules 6 are roller hot-pressing modules or flat-plate hot-pressing modules, and the shaping modules 7 are roller shaping modules.
When the hot-pressing module is a roller hot-pressing module, as shown in fig. 3, each section of hot-pressing module comprises a plurality of heating press-fit rollers 6-1 which are horizontally distributed in parallel, a plurality of heating carrier rollers 6-2 which are horizontally distributed in parallel, the heating press-fit rollers 6-1 are contacted with the heating carrier rollers 6-2, the plurality of heating press-fit rollers 6-1 are fixedly connected to a hot-pressing roller base, a hot-pressing roller up-and-down moving guide rail 6-3 is arranged on a machine base, and the hot-pressing roller base is in sliding connection with the hot-pressing roller up-and-down moving guide rail 6-3, so that the hot-pressing roller base can move up and down in the hot-pressing roller up-and-down moving guide rail 6-3 to drive the heating press-fit rollers 6-1 to move up and down.
When the hot pressing module is a flat plate hot pressing module, as shown in fig. 4, each section of the hot pressing module comprises a hot pressing flat plate 6-4 and a hot pressing supporting plate 6-5, flat plate up-and-down moving guide rails 6-6 and flat plate left-and-right moving guide rails 6-7 are arranged above and below the base, the hot pressing flat plate 6-4 or the hot pressing supporting plate 6-5 is fixedly arranged on a corresponding flat plate support, the flat plate support is connected with the corresponding flat plate up-and-down moving guide rails 6-6 in a sliding manner, the flat plate up-and-down moving guide rails 6-6 move up and down and move back and forth in the flat plate up-and-down moving guide rails 6-6 and the flat plate left-and-right moving guide rails 6-7, and can move left and right in the flat plate left-and-right moving guide rails 6-7 to move left and right in the horizontal direction so as to move the position of the hot pressing module left and right.
The shaping module comprises a plurality of shaping pressing rollers and a plurality of shaping carrier rollers, as shown in figure 3, the shaping pressing roller 7-1 is in contact with the shaping carrier roller 7-2, and the fabric passes through between the heating pressing roller 6-1 and the heating carrier roller 6-2, or between the hot pressing flat plate 6-4 and the hot pressing supporting plate 6-5, and between the shaping pressing roller 7-1 and the shaping carrier roller 7-2.
In some embodiments, the hot pressing and sizing unit comprises four sections of hot pressing modules, and correspondingly, the hot pressing modules comprise four sets of heating pressing rollers/heating supporting rollers or four sets of hot pressing flat plates/hot pressing supporting plates.
In some embodiments, as shown in fig. 2, the apparatus for preparing a microporous foamed particle composite elastic material of the present invention further includes a second fabric glue spraying unit, the second fabric glue spraying unit includes a second unreeling machine 8 and a second glue spraying machine 9, the second fabric glue spraying unit and the first fabric glue spraying unit are arranged in parallel, the second unreeling machine 8 is used for outputting a top layer fabric, the second glue spraying machine 9 is used for spraying glue on a lower surface of the top layer fabric, the top layer fabric and a bottom layer fabric adhered with microporous foamed particles are converged at the primary pressing roller 2 and are compounded above the foamed particle layer, and then the compounded materials pass through the hot pressing and shaping unit and the reeling machine 3.
In some embodiments, as shown in fig. 3 or fig. 4, the winding buffer unit of microcellular foamed particle composite elastic material of the present invention comprises a pair of winding rollers 10 moving up and down and a winding roller up-down guide rail 11 corresponding to the winding roller 10, the winding roller 10 is slidably connected to the winding roller up-down guide rail 11 and can move up and down and back in the winding roller up-down guide rail 11. Set up rolling buffer memory unit, can avoid machine equipment fast operation and compound elastic material overlength material moving speed to keep up the overlapping of leading to and press the book.
In some embodiments, as shown in fig. 3, the apparatus for preparing microcellular foamed particle composite elastic material of the present invention further comprises a cutting and punching unit disposed before the winder 3, the cutting and punching unit comprising a punching blade 12, a punching blade up-and-down moving guide 13, and a punching pad 14.
When the device is used for producing the composite material with only one layer of fabric, the bottom layer fabric sequentially passes through the first unreeling machine, the first glue sprayer, the foaming particle sprayer, the preliminary pressing roller, the hot pressing and shaping unit, the rolling buffer unit, the cutting and stamping unit and the reeling machine, and the composite elastic material with only one layer of fabric is obtained. The cutting and stamping unit cuts and stamps the composite material into products such as insoles, uppers, cushions, yoga mats, mattresses and the like; or the composite elastic material can be directly rolled without arranging a cutting and stamping unit.
When the device is adopted to produce the composite material with two layers of fabrics and middle microporous foaming particles, the bottom fabric sequentially passes through the first unreeling machine, the first glue sprayer and the foaming particle sprayer, the foaming particles are sprayed on the bottom fabric coated with glue by the foaming particle sprayer, the top fabric sequentially passes through the second unreeling machine and the second glue sprayer, the bottom fabric and the top fabric adhered with the foaming particles are converged at the preliminary press-fit roller, the top fabric is compounded on the upper surface of the foaming particles through the preliminary press-fit roller to obtain the composite material of the bottom fabric, the foaming particles and the top fabric, the composite material sequentially passes through the hot-pressing and shaping unit, the rolling buffer unit, the cutting and stamping unit and the winding machine, and the composite elastic material with the double layers of fabrics is obtained. The cutting and stamping unit cuts and stamps the composite material into products such as insoles, uppers, cushions, yoga mats, mattresses and the like; or the composite elastic material can be directly rolled without arranging a cutting and stamping unit.
Example 2 preparation of a composite elastic Material of Single layer facing
The composite elastic material of the single-layer fabric is produced by adopting the preparation device of the microcellular foamed particle composite elastic material in the embodiment 1, and the preparation device of the microcellular foamed particle composite elastic material is composed of a first unreeling machine 4, a first glue sprayer 5, a foamed particle spraying machine 1, a primary pressing roller 2, a hot pressing and sizing unit, a reeling buffer unit, a cutting and stamping unit and a reeling machine 3. The hot-pressing and shaping unit is a four-section roller hot-pressing module.
(1) Composite elastic material for preparing single-layer fabric
The bottom surface fabric adopts the blended fabric, through the unloading of first unreeling machine, the bottom surface fabric makes glue that adheres to evenly on the bottom surface fabric through first glue sprayer spraying glue, and used glue adopts PU to glue, and rubber coating thickness 150um. After the bottom fabric is coated with glue, TPU micropore foaming particles are uniformly sprayed on the bottom fabric coated with PU glue through a foaming particle spraying machine, the TPU micropore foaming particles are polyester type foaming particles, the particle size is 3-4mm, the density is 0.1g/cm & lt 3 & gt, the hardness is 10HC, the rebound resilience is higher than 60%, the color is pure white, and the particles are uniformly sprayed one layer. The bottom layer fabric and the TPU micropore foaming particles are pressed together through a preliminary pressing roller and then enter a hot pressing and shaping unit. The four-section hot pressing module roller gap (the gap between the heating pressing roller and the heating carrier roller, namely the hot pressing gap) is respectively set to be 1mm, 1.5mm and 1.5mm, and the temperature is respectively set to be 130 ℃, 150 ℃ and 140 ℃. The design module is 5 design pressfitting rollers, and the clearance all sets up to 1.5mm (the clearance between appointed type pressfitting roller and the design bearing roller, design pressfitting clearance promptly), and ambient temperature sets up to 10 ℃. The diameter of the heating pressing roller is 4-5mm, and the diameter of the shaping pressing roller is 50mm. After hot-pressing and shaping, the bottom fabric is adhered to the TPU microporous foamed particles, and the particles are deformed by hot-pressing and compression, so that the original oval shape is changed into a round cake shape with the upper and lower surfaces being flat, and the TPU particles are tightly adhered to each other due to the existence of glue (as shown in fig. 5). And then the composite material enters a cutting and stamping unit to stamp products, the stamping knife can be a cutting die of insoles, uppers, cushions, yoga mats, mattresses and the like, the required products are continuously stamped out, or the finished elastic fabric is directly rolled without stamping, and the thickness of the manufactured elastic fabric is 1.5mm.
(2) Preparation of TPU foamed sheet
The bottom surface fabric adopts TPU hot melt adhesive membrane, through the unloading of first unreeling machine, and the bottom surface fabric makes evenly to adhere to glue on the bottom surface fabric through first glue sprayer spraying glue, and used glue adopts PU to glue, and rubber coating thickness 100um. After the hot melt adhesive film is coated with the glue, uniformly sprinkling TPU microporous foaming particles on the hot melt adhesive film coated with the PU glue by a foaming particle sprinkling machine, wherein the TPU microporous foaming particles are polyester type foaming particles, the particle size is 3-4mm, and the density is 0.1g/cm 3 Hardness 10HC, rebound resilience higher than 60%, pure white color, uniform particle and one layer. The hot melt adhesive film and the TPU microporous foaming particles are pressed together through a preliminary pressing roller and then enter a hot pressing and shaping unit. The four-section hot-pressing module roller clearance is respectively set to be 1.5mm, 2mm and 2mm, and the temperature is respectively set to be 140 ℃, 155 ℃ and 150 ℃. The design module is 5 design compression rollers, and the clearance all sets up to 2mm, and ambient temperature sets up to 10 ℃. The diameter of the heating pressing roller is 4-5mm, and the diameter of the shaping pressing roller is 50mm. After the hot pressing and shaping unit, the hot melt adhesive film is melted and is adhered to the TPU foaming particles, meanwhile, the TPU foaming particles are compressed and deformed, the original oval shape is changed into a round cake shape with upper and lower planes, and the TPU particles are tightly adhered to each other due to the existence of glue. Therefore, the TPU foamed sheet or plate equivalent to no covering cloth is prepared, then the TPU foamed sheet or plate enters a cutting and stamping unit to stamp products, a stamping knife can be a cutting die of insoles, uppers, cushions, yoga mats, mattresses and the like, the required products are continuously stamped, or the TPU foamed sheet or plate is directly rolled into a finished TPU foamed sheet or plate without stamping, and the thickness of the prepared TPU foamed sheet is 2mm.
In addition, the selection of the particle size of the TPU microporous foaming particles, such as the selection of the particle diameter of 3-10mm, the setting of the roller gap of a hot pressing module of 0.5-50mm, and the regulation and control of the gluing thickness and the hot pressing setting temperature can prepare the coiled materials with the thickness of the TPU foaming sheet of 0.5-50mm, and the process of the invention is superior to the process of the traditional steam compression molding 5cm foaming sheet. (3) Colored composite elastic material for preparing single-layer fabric
The bottom surface fabric adopts the blended fabric, through the unloading of first unreeling machine, the bottom surface fabric makes through first glue-spraying machine spraying glue to adhere to glue uniformly on the bottom surface fabric, and used glue adopts PU to glue, and rubber coating thickness is 150um. After the bottom layer fabric is coated with glue, TPU micropore foaming particles are uniformly sprinkled on the bottom layer fabric coated with PU glue through a foaming particle sprinkler, the TPU micropore foaming particles are polyether type foaming particles, the particle size is 3-4mm, and the density is 0.1g/cm 3 The hardness is 10HC, the rebound resilience is higher than 60%, the colors are white, black, red, green, yellow and the like, the particles are uniformly sprinkled one layer, the foaming particle sprinkler is a plurality of independently controlled blanking spray heads in a matrix form, the discharge position and the opening and closing gap are controlled by a pneumatic valve to realize the sprinkling position and amount of the TPU foaming particles, and the sprinkling particles can be a certain pattern of single color, multi-color mixing and color. The bottom layer fabric and the TPU particles are pressed together through a primary pressing roller and then enter a hot pressing and shaping unit. The four-section hot-pressing module roller clearance is respectively set to be 1mm, 1.5mm and 1.5mm, and the temperature is respectively set to be 130 ℃, 150 ℃ and 140 ℃. The design module is 5 compression rollers, and the clearance all sets up to 1.5mm, and ambient temperature sets up to 10 ℃. The diameter of the heating pressing roller is 4-5mm, and the diameter of the shaping pressing roller is 50mm. After the hot pressing and shaping unit, the bottom fabric is adhered to the TPU microporous foamed particles, meanwhile, the particles are deformed by hot pressing and compression, the original oval shape is changed into a round cake shape with the upper and lower surfaces being flat, and the TPU particles are tightly adhered to each other due to the existence of glue. Then the cloth enters a cutting and stamping unit to stamp products, the stamping knife can be a cutting die of insoles, uppers, cushions, yoga mats, mattresses and the like, the required products are continuously stamped out, or the products are directly rolled into finished elastic fabrics without stamping, and the products are color surface layer elastic fabrics with designed patterns.
Example 3 composite elastic Material for producing two-layer Fabric
The device for preparing the microporous foamed particle composite elastic material in the embodiment 1 is used for producing the composite elastic material of the double-layer fabric, and the device for preparing the microporous foamed particle composite elastic material is composed of a first unreeling machine 4, a first glue sprayer 5, a second unreeling machine 8, a second glue sprayer 9, a foamed particle sprayer 1, a preliminary pressing roller 2, a hot pressing and shaping unit, a rolling buffer unit, a cutting and stamping unit and a rolling machine 3. The hot-pressing and shaping unit is a four-section roller hot-pressing module.
Bottom surface fabric, top layer surface fabric all adopt the blended fabric, put into the unloading department of first unreeling machine, second unreeling machine respectively, and bottom surface fabric carries out the spraying of glue through first glue sprayer, and used glue adopts PU to glue, evenly sprays glue on bottom surface fabric, and rubber coating thickness 150um. After the bottom layer fabric is coated with the glue, uniformly sprinkling TPU microporous foaming particles on the bottom layer fabric coated with the PU glue by a foaming particle spraying machine, wherein the particle size of the TPU microporous foaming particles is 4-6mm, and the density is 0.1g/cm 3 The hardness of 10HC and the resilience of more than 60 percent, the color is pure white, and the particles are uniformly scattered in one layer. The top layer surface fabric carries out the spraying of glue through the second machine of glue that spouts, and used glue adopts PU to glue, evenly sprays glue on the top layer surface fabric, and the rubber coating thickness is 100um, and the top layer surface fabric is in the same place through preliminary pressfitting roller pressfitting with the bottom surface fabric that is stained with TPU micropore foaming granule, then gets into hot pressing and design unit. The four-section hot-pressing module roller clearance is respectively set to be 2mm, 3mm and 3mm, and the temperature is respectively set to be 145 ℃, 150 ℃ and 140 ℃. The design module is 5 compression rollers, and the clearance all sets up to 3mm, and ambient temperature sets up to 0 ℃. The diameter of the heating pressing roller is 4-5mm, and the diameter of the shaping pressing roller is 50mm. After hot-pressing and shaping, the bottom layer fabric and the top layer fabric are adhered to the TPU microporous foamed particles, meanwhile, the TPU particles are compressed and deformed, the original oval shape is changed into a round cake shape with upper and lower planes, and the TPU particles are tightly adhered to each other due to the existence of glue (as shown in figure 6). Then the composite material enters a cutting and stamping unit to stamp the product, and the stamping knife can be a cutting die of insoles, uppers, cushions, yoga mats, mattresses and the like to continuously stamp the required product or directly roll the product into the finished product without stampingThe thickness of the prepared elastic fabric is 3mm.

Claims (10)

1. A preparation method of a microporous foamed particle composite elastic material of a single-layer fabric is characterized by comprising the following steps:
step 1, taking a bottom layer fabric, blanking through a first unreeling machine, uniformly spraying glue on the bottom layer fabric by a first glue spraying machine, spraying microporous foaming particles onto the bottom layer fabric by a foaming particle spraying machine, and adhering the microporous foaming particles to the bottom layer fabric by the glue on the bottom layer fabric; the bottom layer fabric is made of cotton cloth, linen, silk, woolen cloth, leather, chemical fiber, blended fabric or modal material, or is a hot melt adhesive film;
step 2, primarily pressing the bottom layer fabric adhered with the microcellular foam particles by a primary pressing roller, and then carrying out hot pressing and shaping by a hot pressing and shaping unit, so that the microcellular foam particles and the bottom layer fabric, and the microcellular foam particles and the particles are tightly adhered together;
the hot pressing and shaping unit comprises four sections of hot pressing modules, the temperatures of the first section, the second section, the third section and the fourth section of hot pressing modules are respectively set to be 80-180 ℃, 80-180 ℃ and 80-180 ℃, the temperature of the second section is 0-30 ℃ higher than that of the first section, the temperature of the third section is 0-20 ℃ higher than that of the second section, and the temperature of the fourth section is 0-20 ℃ lower than that of the third section; the pressing gaps of the first section, the second section, the third section and the fourth section of the hot-pressing module are respectively set to be 0.5-50mm, 0.5-50mm and 0.5-50mm; the pressing gap of the shaping module is 0.5-50mm;
and 3, winding the obtained composite material by using a winding machine.
2. A preparation method of a microporous foaming particle composite elastic material of a double-layer fabric is characterized by comprising the following steps:
step 1, taking a bottom layer fabric, blanking through a first unreeling machine, uniformly spraying glue on the bottom layer fabric by a first glue spraying machine, spraying microporous foaming particles onto the bottom layer fabric by a foaming particle spraying machine, and adhering the microporous foaming particles to the bottom layer fabric by the glue on the bottom layer fabric; taking the top layer fabric, discharging through a second unreeling machine, and uniformly spraying glue on the top layer fabric through a second glue spraying machine; the bottom layer fabric is made of cotton cloth, linen, silk, wool, leather, chemical fiber, blended fabric or modal material or is a hot melt adhesive film, and the top layer fabric is made of cotton cloth, linen, silk, wool, leather, chemical fiber, blended fabric or modal material;
step 2, covering the top layer fabric above the bottom layer fabric adhered with the microcellular foam particles, then preliminarily pressing the top layer fabric by a preliminary pressing roller, and then carrying out hot pressing and shaping by a hot pressing and shaping unit to enable the microcellular foam particles to be tightly adhered to the bottom layer fabric and the top layer fabric and the microcellular foam particles to be tightly adhered to the particles;
the hot pressing and shaping unit comprises four sections of hot pressing modules, the temperatures of the first section, the second section, the third section and the fourth section of hot pressing modules are respectively set to be 80-180 ℃, 80-180 ℃ and 80-180 ℃, the temperature of the second section is 0-30 ℃ higher than that of the first section, the temperature of the third section is 0-20 ℃ higher than that of the second section, and the temperature of the fourth section is 0-20 ℃ lower than that of the third section; the pressing gaps of the first section, the second section, the third section and the fourth section of the hot-pressing module are respectively set to be 0.5-50mm, 0.5-50mm and 0.5-50mm; the pressing gap of the shaping module is 0.5-50mm;
and 3, winding the obtained composite material by using a winding machine.
3. The production method according to claim 1, characterized in that: the preparation method is carried out by adopting a composite elastic material preparation device, the composite elastic material preparation device comprises a first fabric glue spraying unit, a foaming particle spraying machine (1), a primary pressing roller (2), a hot pressing and shaping unit and a winding machine (3) which are sequentially arranged, the first fabric glue spraying unit comprises a first unreeling machine (4) and a first glue spraying machine (5), the first unreeling machine (4) is used for outputting bottom fabric, the first glue spraying machine (5) is used for spraying glue on the bottom fabric, the foaming particle spraying machine (1) is used for spraying microporous foaming particles on the bottom fabric, and the bottom fabric sequentially passes through the first unreeling machine (4), the first glue spraying machine (5), the foaming particle spraying machine (1), the primary pressing roller (2), the hot pressing and shaping unit and the winding machine (3) so that microporous foaming particles and the bottom fabric and the microporous foaming particles are mutually bonded together to form the composite elastic material; the hot pressing and shaping unit comprises a multi-section hot pressing module (6) and a shaping module (7) which are arranged in a flow line mode, the hot pressing module (6) is a roller hot pressing module or a flat plate hot pressing module, and the shaping module (7) is a roller shaping module.
4. The production method according to claim 3, characterized in that:
the hot pressing module (6) is a roller hot pressing module, each section of hot pressing module comprises a plurality of heating pressing rollers (6-1) which are horizontally distributed in parallel and a plurality of heating carrier rollers (6-2) which are horizontally distributed in parallel, the heating pressing rollers (6-1) are in contact with the heating carrier rollers (6-2), the plurality of heating pressing rollers (6-1) are fixedly connected to a hot pressing roller base, a hot pressing roller up-and-down moving guide rail (6-3) is arranged on a machine base, and the hot pressing roller base is in sliding connection with the hot pressing roller up-and-down moving guide rail (6-3) so that the hot pressing roller base can move up and down in the hot pressing roller up-and-down moving guide rail (6-3) to drive the heating pressing rollers (6-1) to move up and down; alternatively, the first and second liquid crystal display panels may be,
the hot pressing die set (6) is a flat plate hot pressing die set, each section of hot pressing die set comprises a hot pressing flat plate (6-4) and a hot pressing supporting plate (6-5), flat plate up-and-down moving guide rails (6-6) and flat plate left-and-right moving guide rails (6-7) are arranged above and below the base, the hot pressing flat plate (6-4) or the hot pressing supporting plate (6-5) is fixedly arranged on a corresponding flat plate support, the flat plate support is in sliding connection with the corresponding flat plate up-and-down moving guide rails (6-6), the flat plate up-and-down moving guide rails (6-6) move up and down to drive the hot pressing flat plate (6-4) or the hot pressing supporting plate (6-5) to move up and down, the flat plate up-and-down moving guide rails (6-6) are in sliding connection with the flat plate left-right moving guide rails (6-7), and the flat plate can move left and right in the flat plate left-and right moving guide rails (6-7) back and forth, so that the position of the hot pressing die set can be moved left and right in the horizontal direction;
the shaping module (7) comprises a plurality of shaping pressing rollers (7-1) and a plurality of shaping carrier rollers (7-2), the shaping pressing rollers (7-1) are in contact with the shaping carrier rollers (7-2), and the fabric passes through the space between the heating pressing rollers (6-1) and the heating carrier rollers (6-2) or the space between the hot pressing flat plate (6-4) and the hot pressing supporting plate (6-5) and the space between the shaping pressing rollers (7-1) and the shaping carrier rollers (7-2);
the hot-pressing and shaping unit comprises four sections of hot-pressing modules (6).
5. The method of claim 2, wherein: the method is carried out by adopting the composite elastic material preparation device as claimed in claim 3 or 4, and the composite elastic material preparation device further comprises a second fabric glue spraying unit, the second fabric glue spraying unit comprises a second unreeling machine (8) and a second glue spraying machine (9), the second fabric glue spraying unit and the first fabric glue spraying unit are arranged in parallel, the second unreeling machine (8) is used for outputting top layer fabric, the second glue spraying machine (9) is used for spraying glue on the lower surface of the top layer fabric, the top layer fabric and the bottom layer fabric adhered with microporous foamed particles are converged at a primary pressing roller (2) and are compounded above the foamed particle layer, and then the compounded materials pass through a hot pressing and shaping unit and a winding machine (3).
6. The method according to claim 3 or 5, characterized in that: the composite elastic material preparation device also comprises a rolling buffer unit arranged in front of the hot-pressing and shaping unit and/or behind the hot-pressing and shaping unit;
the rolling buffer unit comprises a pair of rolling rollers (10) which move up and down and a rolling roller up-down moving guide rail (11) corresponding to the rolling rollers (10), wherein the rolling rollers (10) are connected with the rolling roller up-down moving guide rail (11) in a sliding manner and can move up and down in the rolling roller up-down moving guide rail (11).
7. The method according to claim 3 or 5, characterized in that: the composite elastic material preparation device further comprises a cutting and stamping unit arranged in front of the winding machine (3), wherein the cutting and stamping unit comprises a stamping knife (12), a stamping knife up-down moving guide rail (13) and a stamping backing plate (14).
8. The method of claim 7, wherein: and 3, after passing through a rolling buffer unit, the composite material obtained in the step 2 is punched into a set product through a cutting and punching unit, and then is rolled through a rolling machine.
9. The production method according to claim 1 or 2, characterized in that: the microcellular foaming particles are TPU, PA, TPEE, TPE or PP microcellular foaming particles;
preferably, the particle diameter of the microcellular foaming particles is 3-10mm, and the density is 0.1-0.25g/cm 3 Hardness 10-50HC; the glue is environment-friendly PU glue or TPU hot melt adhesive;
preferably, the thickness of the glue on the bottom layer fabric is 100-1000um, and the thickness of the glue on the top layer fabric is 100-1000um.
10. The production method according to claim 1 or 2, characterized in that:
the diameter of the heating pressing roller is 4-5mm, and the diameter of the shaping pressing roller is 45-55mm or 50mm;
the temperature of the first section, the second section, the third section and the fourth section of the hot-pressing module is respectively set to be 130-150 ℃, 150-160 ℃ and 140-150 ℃, the temperature of the second section is 5-20 ℃ higher than that of the first section, the temperature of the third section is 0-10 ℃ higher than that of the second section, and the temperature of the fourth section is 5-10 ℃ lower than that of the third section; the pressing gaps of the first section, the second section, the third section and the fourth section of the hot-pressing module are respectively set to be 1-2mm, 1.5-3mm and 1.5-3mm; the pressing gap of the shaping module is 1.5-3mm, and the ambient temperature is 0-11 ℃, preferably 0-10 ℃.
CN202210945871.5A 2022-08-08 2022-08-08 Preparation method of microcellular foamed particle composite elastic material Pending CN115256999A (en)

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