Pressure-resistant composite packaging material and method for producing the same

Abstract

The present application relates to the field of foam packaging material, in particular to a kind of anti-pressure composite packaging material and preparation method thereof, by the bubble of first bubble film is embedded in the bubble gap of second bubble film, the bubble film of two layers is mutually embedded in the same layer structure, and is alternately arranged, bubble wall supports each other, when it is pressed, the bubble of second bubble film is flattened in the process, its side wall is supported by the bubble of first bubble film, therefore it will not be flattened, thereby greatly improve bubble density and the supporting property of foam packaging material;The bubble of first bubble film, second bubble film is formed by separate film, bubble has independent bubble wall, bubble density is big, and pressure resistance is strong;Through the double heat preservation structure of aluminized film and bubble film structure, it has excellent heat preservation performance, is suitable for the packaging and heat preservation of food material.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of foam packaging materials, in particular to a pressure-resistant composite packaging material and a preparation method thereof. BACKGROUND

[0002] The air cushion film is a film-shaped material containing a bubble interlayer in the middle of the film. The film-shaped material is extruded by an extruder after melting of low-density polyethylene resin, and then two film sheets are extruded in a forming mold. One of the film sheets is sucked into a film bubble shape on a vacuum roller, and then is combined with the other film sheet to form an integrated film. The latter is tightly attached to the opening surface with the film bubble. This combined film is an air cushion film. If a layer of film is further combined on the convex film bubble surface, it becomes a three-layer combined air cushion film. The three-layer combined air cushion film contains a bubble layer in the middle, so the combined film is relatively light and has elasticity. In addition, it also has the characteristics of moisture resistance, shock resistance, sound insulation, beauty, insect resistance, mildew resistance, and low price. According to the characteristics of the combined air cushion film, people often use this film as a packaging material for instruments, instruments, ceramics, and glassware. Traditional bubble film adopts a circular bubble structure of single or multiple layers. Whether it is a single or multiple layer bubble film, the bubble becomes flat after being pressed, and the bubble wall is prone to burst after being pressed. The bubble wall is thin and prone to breakage if the bubble density on the single film is simply increased. The bubbles in the same film are prone to breakage if they are too dense during the forming process. In addition, the traditional bubble film has poor heat preservation performance. In view of this, the present application is generated. SUMMARY

[0003] An object of the present application is to solve at least the above problems by a pressure-resistant composite packaging material and a preparation method thereof.

[0004] To solve the above technical problems, the technical solution adopted by the present application is as follows: the pressure-resistant composite packaging material comprises, from top to bottom, a PVF film, a VMPET film, a first bubble film, a second bubble film, a smooth film, and a reinforced fabric. The first bubble film is distributed with bubbles rising downward, the second bubble film is distributed with bubbles protruding upward, and the bubbles of the first bubble film are embedded in the interstitial spaces of the bubbles of the second bubble film.

[0005] Preferably, the non-bubble surface of the first bubble film is bonded to the VMPET film, the end surface of the bubble of the first bubble film is bonded to the non-bubble surface of the second bubble film, the end surface of the bubble of the second bubble film is bonded to the non-bubble surface of the first bubble film, and the non-bubble surface of the second bubble film is bonded to the smooth film.

[0006] Preferably, the bubbles of the first bubble film are in the shape of triangular prisms, the bubbles of the second bubble film are in the shape of cylinders, the bubbles on the second bubble film are arranged in a plum blossom arrangement, and the bubbles of the first bubble film are embedded between three adjacent bubbles on the second bubble film.

[0007] Preferably, the bubble shape of the first bubble film is long columnar, the bubble shape of the second bubble film is cylindrical, the bubbles on the second bubble film are arranged in a quincunx arrangement, and the bubbles of the first bubble film are embedded between four adjacent bubbles of the second bubble film.

[0008] Preferably, the fabric organization of the reinforcing fabric is plain weave or satin weave.

[0009] Preferably, the fiber structure of the warp of the reinforcing fabric is a core-sheath structure, the core-sheath structure includes a core layer and a sheath layer, the core layer is a high-strength component, and the sheath layer is a flame-retardant component. The fiber structure of the weft is a hollow structure, and the fiber of the weft uses an antibacterial component.

[0010] Preferably, the raw materials of the first bubble film include the following components in parts by weight: linear low-density polyethylene 55-65 parts, low-density polyethylene 20-25 parts, metallocene polyethylene 3-8 parts, and ethylene-vinyl acetate copolymer 3-8 parts. The raw materials of the second bubble film include the following components in parts by weight: linear low-density polyethylene 20-30 parts, high-density polyethylene 10-20 parts, ethylene-vinyl acetate copolymer 3-5 parts, colorant 0.5-1 part, organic tin stabilizer 1-2 parts, butylated hydroxyanisole 2-3 parts, and phenyl o-hydroxybenzoate 0.2-0.5 parts.

[0011] According to the preparation method of the pressure-resistant composite packaging material described above, the method includes the following steps:

[0012] Step a, respectively taking PVF film, VMPET film, first bubble film, second bubble film, smoothing film, and reinforcing fabric for standby;

[0013] Step b, the first bubble film and the second bubble film are respectively formed into film bubbles by vacuum roll suction molding;

[0014] Step c, the bubbles of the first bubble film are embedded in the bubble gap of the second bubble film, and are heat-combined;

[0015] Step d, the smoothing film is combined with the non-bubble surface of the second bubble film;

[0016] Step e, the reinforcing fabric is combined with the back surface of the smoothing film;

[0017] Step f, after the PVF film and the VMPET film are combined, the VMPET film is combined with the non-bubble surface of the first bubble film;

[0018] Step g, the pressure-resistant composite packaging material after being combined and shaped is processed into a desired shape.

[0019] Preferably, the pressure-resistant composite packaging material is processed by a composite production line, which comprises a first vacuum roller, a second vacuum roller, a first transfer conveyor, a second transfer conveyor, a first composite roller, a second composite roller, a third composite roller, a fourth composite roller, a first glue applicator, a second glue applicator, a first drying machine and a second drying machine, the transfer belt of the first transfer conveyor is provided with protrusions matching the bubble shape of the first bubble film, the first bubble film is formed into a film bubble by the first vacuum roller, and then transferred to the first transfer conveyor, the protrusions on the transfer belt of the first transfer conveyor are embedded in the bubbles of the first bubble film, the transfer belt of the second transfer conveyor is provided with protrusions matching the bubble shape of the second bubble film, the second bubble film is formed into a film bubble by the first vacuum roller, and then transferred to the second transfer conveyor, the protrusions on the transfer belt of the second transfer conveyor are embedded in the bubbles of the first bubble film, the first glue applicator and the first drying machine are arranged above the first transfer conveyor, and the second glue applicator and the second drying machine are arranged above the second transfer conveyor, the first bubble film is glued on the bubble end face by the first glue applicator, and the water in the glue is volatilized by the first drying machine, the second bubble film is glued on the bubble end face by the second glue applicator, and the water in the glue is volatilized by the second drying machine, the protrusions of the first transfer conveyor and the second transfer conveyor are engaged at the composite position, the bubbles of the first bubble film are embedded in the gap between the bubbles of the second bubble film after being compounded, the smooth film is compounded with the non-bubble surface of the second bubble film by the first composite roller, the reinforcing fabric is compounded with the smooth film by the second composite roller, the PVF film and the VMPET film are compounded by the third composite roller, and then the VMPET film is compounded with the non-bubble surface of the first bubble film by the fourth composite roller, to obtain the pressure-resistant composite packaging material.

[0020] Preferably, the layers of the pressure-resistant composite packaging material are bonded by a water-based composite adhesive, and the raw materials of the water-based composite adhesive include the following components in parts by weight: hydroxymethyl acrylamide 8-10 parts, polytetrahydrofuran ether glycol 5-8 parts, methyl methacrylate 5-6 parts, toluene diisocyanate 4-7 parts, dimethylol propionic acid 10-12 parts, antimony pentoxide flame retardant 0.5-0.6 parts, and water-based polyisocyanate crosslinking agent 0.6-0.8 parts.

[0021] From the above description, the compression-resistant composite packaging material and the preparation method thereof have the following beneficial effects: in the present application, the bubbles of the first bubble film are embedded in the bubble gaps of the second bubble film, the two bubble films are embedded in the same layer structure, and are arranged alternately, the bubble walls support each other, when the bubble film is compressed, the sidewall of the bubble of the second bubble film is supported by the bubble of the first bubble film during the flattening process, so the bubble film will not be flattened, thereby greatly improving the bubble density and the supporting property of the foam packaging material; the bubbles of the first bubble film and the second bubble film are formed by separate films, the bubbles have independent bubble walls, the bubble density is large, and the compression resistance is strong; the double heat preservation structure of the VMPET aluminized film and the bubble film structure has excellent heat preservation performance, is suitable for food packaging and heat preservation; the reinforced fabric plays a supporting and reinforcing role on the whole packaging material, protects the bubble film and the smooth film from being punctured, and has good heat preservation and flame retardant performance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a lateral sectional view of the compression-resistant composite packaging material of the specific embodiment one.

[0023] Figure 2 It is a lateral sectional view of the compression-resistant composite packaging material of the specific embodiment one.

[0024] Figure 3 It is a lateral sectional view of the compression-resistant composite packaging material of the specific embodiment two.

[0025] Figure 4 It is a lateral sectional view of the compression-resistant composite packaging material of the specific embodiment two.

[0026] Figure 5 It is a structure schematic view of the composite production line. DETAILED DESCRIPTION

[0027] The present application is further described below through specific embodiments.

[0028] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0029] As shown in the figure, the anti-pressure composite packaging material of the application comprises, from top to bottom, a PVF film 1, a VMPET film 2, a first bubble film 3, a second bubble film 4, a smooth film 5 and a reinforced fabric 6, the first bubble film 3 is distributed with bubbles rising downward, the second bubble film 4 is distributed with bubbles protruding upward, and the bubbles of the first bubble film 3 are embedded in the bubble gaps of the second bubble film 4. The PVF film 1 is a fluorine ethylene homopolymer, which is processed and manufactured by a two-way stretching process from a polyvinyl fluoride resin, has many excellent properties, including excellent weather resistance, excellent mechanical properties, and resistance to corrosion by many chemicals, etc., and is covered on the outer surface of the aluminized film to form a protective layer for the aluminized film; the VMPET aluminized film is a film with bright metallic color, which is made of PET film as raw material, and high-purity aluminum wire is evaporated into gas state at high temperature of 1100-1200℃, and then the plastic film passes through the vacuum evaporation chamber, and the gaseous aluminum molecules are deposited on the surface of the plastic film to form a bright metallic color film. The aluminizing of the film surface has the effects of light shielding and preventing ultraviolet radiation, which not only prolongs the shelf life of the contents, but also improves the brightness of the film, and is used to replace aluminum foil; the traditional circular bubbles become flat after being pressed, and the bubble wall is prone to burst after being pressed, so the pressure resistance is not good. In the application, the bubbles of the first bubble film 3 are embedded in the bubble gaps of the second bubble film 4, the two layers of bubble films are embedded in the same layer structure and are alternately arranged, and the bubble walls support each other, so that the bubbles of the second bubble film 4 will not become flat during the flattening process, thereby greatly improving the bubble density and the supporting property of the foam packaging material; the bubbles of the first bubble film 3 and the second bubble film 4 are formed by separate films, the bubbles have independent bubble walls, the bubble density is large, and the pressure resistance is strong. Compared with the single film, if the bubble density is simply increased, the bubble wall will be very thin and prone to burst, and if the bubbles in the same film are too dense, they are prone to burst during the forming process. The anti-pressure composite packaging material of the application has a double-hollow bubble film structure, so it has good heat preservation performance. The anti-pressure composite packaging material has a double heat preservation structure of VMPET aluminized film and bubble film structure, so it has excellent heat preservation performance and is suitable for packaging and heat preservation of food materials. When used for hot preservation of food materials, the VMPET aluminized film faces inward; when used for cold preservation of food materials, the VMPET aluminized film faces outward. The packaging material can be cut and reused, has strong pressure resistance, good heat preservation and flame retardant performance, and can block the invasion of air, moisture and bacteria. The packaging material of the application can be processed into the required shape according to the requirements, such as a packaging bag with a sealing opening.The first bubble film 3, the second bubble film 4 and the smooth film 5 are made of polyethylene material, the smooth film 5 is used for sealing the second bubble film 4, and the bubbles of the first bubble film 3 are sealed by the VMPET film 2; the reinforcing fabric 6 plays a role of supporting and reinforcing the whole packaging material, and can protect the bubble film and the smooth film 5 from being punctured from one side thereof, and has good heat preservation and flame retardant properties.

[0030] The non-bubble surface of the first bubble film 3 is bonded with the VMPET film 2, the end surface of the bubble of the first bubble film 3 is bonded with the non-bubble surface of the second bubble film 4; the end surface of the bubble of the second bubble film 4 is bonded with the non-bubble surface of the first bubble film 3, and the non-bubble surface of the second bubble film 4 is bonded with the smooth film 5.

[0031] The pressure-resistant composite packaging material includes but is not limited to the following two structures: Specific embodiment one:

[0033] As shown in Figure 1 and 2 , the bubble shape of the first bubble film 3 is triangular prism, the bubble shape of the second bubble film 4 is cylindrical, the bubbles on the second bubble film 4 are arranged in a quincunx arrangement, and the bubble of the first bubble film 3 is embedded between three adjacent bubbles on the second bubble film 4. Specific embodiment two:

[0035] As shown in Figure 3 and 4 , the bubble shape of the first bubble film 3 is long column, the bubble shape of the second bubble film 4 is cylindrical, the bubbles on the second bubble film 4 are arranged in a quincunx arrangement, and the bubble of the first bubble film 3 is embedded between four adjacent bubbles on the second bubble film 4.

[0036] The fabric organization of the reinforcing fabric 6 is plain weave or satin weave.

[0037] The fiber structure of the warp of the reinforcing fabric 6 is skin-core structure, the skin-core structure includes a core layer and a skin layer, the core layer is a high-strength component, and the skin layer is a flame-retardant component; the fiber structure of the weft is hollow structure, and the fiber of the weft uses an antibacterial component. The reinforcing fabric 6 is interwoven by the warp with high strength and flame-retardant function and the weft with antibacterial function, so that it has excellent tensile, tear resistance, flame retardant and antibacterial properties, wherein the high-strength component uses a para-aramid copolymer, the flame-retardant component uses heat-resistant polyethylene, and the antibacterial component adds natural antibacterial substances such as chitin.

[0038] The raw material of the first bubble film 3 includes the following components in parts by weight: linear low density polyethylene 55-65 parts, low density polyethylene 20-25 parts, metallocene polyethylene 3-8 parts, ethylene-vinyl acetate copolymer 3-8 parts. The raw material of the second bubble film 4 includes the following components in parts by weight: linear low density polyethylene 20-30 parts, high density polyethylene 10-20 parts, ethylene-vinyl acetate copolymer 3-5 parts, colorant 0.5-1 part, organic tin stabilizer 1-2 parts, butyl hydroxy anisole 2-3 parts, and phenyl o-hydroxybenzoate 0.2-0.5 part. The high proportion of high density polyethylene can increase the tensile strength of the surface film; the organic tin stabilizer and butyl hydroxy anisole antioxidant can scavenge peroxide free radicals to protect polyethylene; the phenyl o-hydroxybenzoate ultraviolet light absorber can absorb and change the energy of the incident ultraviolet light into a less destructive form. The use of the stabilizer, antioxidant and ultraviolet light absorber can make the raw material have excellent anti-aging properties and stable color function, good oxidation resistance, slow aging speed, and the sealing bone strip and re-adhesive can be reused, less environmental pollution, and the multi-layer film can be corona treated before being compounded to increase the adhesion, the bubbles are not easy to run out, and the cushioning performance is good. The surface film formed by the raw material of the second bubble film is subjected to artificial accelerated aging test in an ultraviolet aging tester, the ultraviolet spectral region is 300-312 nm, the tensile strength before aging is 9.5 MPa, the elongation at break is 228.5%, the tensile strength retention rate after 200 h of aging is 95.2%, and the elongation at break retention rate is 83.5%, and the performance is excellent.

[0039] The preparation method of the anti-pressure composite packaging material described above includes the following steps:

[0040] Step a, the PVF film 1, VMPET film 2, first bubble film 3, second bubble film 4, smooth film 5 and reinforcing fabric 6 are prepared respectively;

[0041] Step b, the first bubble film 3 and the second bubble film 4 are respectively formed into a bubble film by vacuum roll suction molding;

[0042] Step c, the bubbles of the first bubble film 3 are embedded into the bubble gap of the second bubble film 4, and are hot compounded;

[0043] Step d, the smooth film 5 is compounded with the non-bubble surface of the second bubble film 4;

[0044] Step e, the reinforcing fabric 6 is compounded with the back surface of the smooth film 5;

[0045] Step f, after the PVF film 1 and the VMPET film 2 are compounded, the VMPET film 2 is compounded with the non-bubble surface of the first bubble film 3;

[0046] Step g, the anti-pressure composite packaging material after compounding and molding is processed into the required shape.

[0047] The pressure-resistant composite packaging material is processed by a composite production line, which comprises a first vacuum roller 10, a second vacuum roller 11, a first transfer conveyor 12, a second transfer conveyor 13, a first composite roller 14, a second composite roller 15, a third composite roller 16, a fourth composite roller 17, a first glue coating machine 18, a second glue coating machine 19, a first drying machine 20, and a second drying machine 21. The conveying belt of the first transfer conveyor 12 is provided with protrusions matching the bubble shape of the first bubble film 3. After the first bubble film 3 is vacuum formed by the first vacuum roller 10, it is transferred to the first transfer conveyor 12. The protrusions on the conveying belt of the first transfer conveyor 12 are embedded in the bubbles of the first bubble film 3. The conveying belt of the second transfer conveyor 13 is provided with protrusions matching the bubble shape of the second bubble film 4. After the second bubble film 4 is vacuum formed by the first vacuum roller 10, it is transferred to the second transfer conveyor 13. The protrusions on the conveying belt of the second transfer conveyor 13 are embedded in the bubbles of the first bubble film 3. The first glue coating machine 18 and the first drying machine 20 are arranged above the first transfer conveyor 12, and the second glue coating machine 19 and the second drying machine 21 are arranged above the second transfer conveyor 13. The first bubble film 3 is coated with glue on the bubble end face by the first glue coating machine 18 and the water in the glue is evaporated by the first drying machine 20. The second bubble film 4 is coated with glue on the bubble end face by the second glue coating machine 19 and the water in the glue is evaporated by the second drying machine 21. The protrusions of the first transfer conveyor 12 and the second transfer conveyor 13 are engaged at the composite position. The bubbles of the first bubble film 3 are embedded in the bubble gaps of the second bubble film 4 after being compounded. The smooth film 5 is compounded with the non-bubble face of the second bubble film 4 by the first composite roller 14. The reinforcing fabric 6 is compounded with the smooth film 5 by the second composite roller 15. The PVF film 1 and the VMPET film 2 are compounded by the third composite roller 16, and then the VMPET film 2 is compounded with the non-bubble face of the first bubble film 3 by the fourth composite roller 17, to obtain the pressure-resistant composite packaging material. The first vacuum roller 10, the second vacuum roller 11, the first transfer conveyor 12, and the second transfer conveyor 13 are all provided with vacuum devices. The vacuum range is arranged on the path where the film passes through the corresponding equipment, to help the first bubble film 3 and the second bubble film 4 to be transferred and conveyed. At the end of the first transfer conveyor 12 and the second transfer conveyor 13, the conveying belts are engaged with each other, so that the first bubble film 3 is embedded in the second bubble film 4. After being compounded, the two are further dried, and then the smooth film 5 is hot compounded at the first composite roller 14. After that, the layers of materials are sequentially compounded and formed. The film surface can be subjected to corona treatment before being coated with glue.

[0048] The layers of the pressure-resistant composite packaging material are bonded by a water-based composite adhesive, the raw materials of the water-based composite adhesive include the following components in parts by weight: 8-10 parts of hydroxymethyl acrylamide, 5-8 parts of polytetrahydrofuran ether glycol, 5-6 parts of methyl methacrylate, 4-7 parts of toluene diisocyanate, 10-12 parts of dimethylol propionic acid, 0.5-0.6 parts of antimony pentoxide flame retardant, and 0.6-0.8 parts of water-based polyisocyanate crosslinking agent. The water-based composite adhesive has bonding performance, and can make the material maintain good softness after drying, has little harm to human body, and has fast drying speed.

[0049] The above are only some specific embodiments of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application using this concept shall be deemed to be an infringement of the protection scope of the present application.

Claims

1. A method for preparing a pressure-resistant composite packaging material, characterized in that, Includes the following steps: Step a: Take PVF film, VMPET film, first bubble film, second bubble film, smooth film and reinforcing fabric respectively for later use; Step b: The first bubble film and the second bubble film are respectively vacuum-formed into bubble films using vacuum rollers; Step c: The bubbles in the first bubble film are embedded in the gaps between the bubbles in the second bubble film, and then thermally bonded. Step d: The smooth film is combined with the non-bubble surface of the second bubble film; Step e: Reinforce the fabric and laminate it to the back of the smooth film; After step f, the PVF film and VMPET film are laminated, the VMPET film is laminated with the non-bubble side of the first bubble film; Step g: Process the composite molded pressure-resistant composite packaging material into the required shape; The pressure-resistant composite packaging material is processed through a composite production line, which includes a first vacuum roller, a second vacuum roller, a first transfer conveyor, a second transfer conveyor, a first composite roller, a second composite roller, a third composite roller, a fourth composite roller, a first glue applicator, a second glue applicator, a first dryer, and a second dryer. The conveyor belt of the first transfer conveyor has protrusions adapted to the bubble shape of the first bubble wrap. After the first bubble wrap is vacuum-formed into a bubble by the first vacuum roller, it is transferred to the first transfer conveyor, where the protrusions on the conveyor belt embed into the bubbles of the first bubble wrap. Similarly, the conveyor belt of the second transfer conveyor has protrusions adapted to the bubble shape of the second bubble wrap. After the second bubble wrap is vacuum-formed into a bubble by the first vacuum roller, it is transferred to the second transfer conveyor, where the protrusions on the conveyor belt embed into the bubbles of the first bubble wrap. Inside the bubble wrap, the first glue applicator and the first dryer are positioned above the first transfer conveyor, and the second glue applicator and the second dryer are positioned above the second transfer conveyor. After the first bubble wrap passes through the first glue applicator, glue is applied to the bubble end face, and the moisture in the glue evaporates through the first dryer. After the second bubble wrap passes through the second glue applicator, glue is applied to the bubble end face, and the moisture in the glue evaporates through the second dryer. The protrusions of the first and second transfer conveyors mesh at the lamination point. After lamination, the bubbles in the first bubble wrap are embedded in the gaps between the bubbles in the second bubble wrap. The smooth film is laminated with the non-bubble surface of the second bubble wrap through the first lamination roller. The reinforcing fabric is laminated with the smooth film through the second lamination roller. After the PVF film and VMPET film are laminated through the third lamination roller, the VMPET film is laminated with the non-bubble surface of the first bubble wrap through the fourth lamination roller, finally obtaining a pressure-resistant composite packaging material. The pressure-resistant composite packaging material includes, from top to bottom, a PVF film, a VMPET film, a first bubble wrap, a second bubble wrap, a smooth film, and a reinforcing fabric. The first bubble wrap has downward-pointing bubbles, and the second bubble wrap has upward-pointing bubbles. The bubbles in the first bubble wrap are embedded in the gaps between the bubbles in the second bubble wrap. The non-bubble surface of the first bubble film is bonded to the VMPET film, and the bubble end face of the first bubble film is bonded to the non-bubble surface of the second bubble film; the bubble end face of the second bubble film is bonded to the non-bubble surface of the first bubble film, and the non-bubble surface of the second bubble film is bonded to the smooth film. The first bubble film has a triangular prism shape, the second bubble film has a cylindrical shape, the bubbles on the second bubble film are arranged in a plum blossom pattern, and the bubbles of the first bubble film are embedded between three adjacent bubbles on the second bubble film.

2. The method for preparing the compression-resistant composite packaging material according to claim 1, characterized in that: The first bubble film has long, cylindrical bubbles, while the second bubble film has cylindrical bubbles. The bubbles on the second bubble film are arranged in a quincunx pattern, and the bubbles in the first bubble film are embedded between four adjacent bubbles on the second bubble film.

3. The method for preparing the compression-resistant composite packaging material according to claim 1, characterized in that: The reinforced fabric has a plain weave or satin weave.

4. The method for preparing the compression-resistant composite packaging material according to claim 1, characterized in that: The warp fibers of the reinforced fabric have a core-sheath structure, which includes a core layer and a sheath layer. The core layer is a high-strength component, and the sheath layer is a flame-retardant component. The weft fibers have a hollow structure, and the weft fibers are made of antibacterial components.

5. The method for preparing the compression-resistant composite packaging material according to claim 1, characterized in that: The raw materials of the first bubble film, by weight, include the following components: 55-65 parts of linear low-density polyethylene, 20-25 parts of low-density polyethylene, 3-8 parts of metallocene polyethylene, and 3-8 parts of ethylene-vinyl acetate copolymer. The raw materials of the second bubble film, by weight, include the following components: 20-30 parts of linear low-density polyethylene, 10-20 parts of high-density polyethylene, 3-5 parts of ethylene-vinyl acetate copolymer, 0.5-1 part of colorant, 1-2 parts of organotin stabilizer, 2-3 parts of butylated hydroxyanisole, and 0.2-0.5 parts of phenyl phthalate.

6. The method for preparing the compression-resistant composite packaging material according to claim 1, characterized in that: The layers of the pressure-resistant composite packaging material are bonded together by a water-based composite adhesive. The raw materials of the water-based composite adhesive, by weight, include the following components: 8-10 parts of hydroxymethylacrylamide, 5-8 parts of polytetrahydrofuran ether diol, 5-6 parts of methyl methacrylate, 4-7 parts of toluene diisocyanate, 10-12 parts of dimethylolpropionic acid, 0.5-0.6 parts of antimony pentoxide flame retardant, and 0.6-0.8 parts of water-based polyisocyanate crosslinking agent.

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