Production process for preparing packaging box by using waste textiles

Abstract

The invention relates to a production process for preparing a packaging box by using waste textiles. The production process comprises the following steps: S1, crushing and dicing the waste textiles; s2, the waste textiles are infiltrated by ethylene glycol for not less than 15 minutes, the waste textiles are opened into short fibers of 15-100 mm, and the waste glass fibers are cut into short glass fibers of 15-100 mm; s3, short fibers and short glass fibers are mixed according to the ratio of (1-8): 1, and a mixed material is obtained; s4, feeding the mixed material to a lapping machine, and forming a net on a non-woven fabric base material to obtain a mixed material net; s5, feeding the mixed material net into a needling machine to obtain a needled felt; and S6, performing hot melting on the needled felt by using an oven, closely observing an infiltration reaction, and when thermal shrinkage deformation reaches 30% or above, quickly transferring the needled felt to a hot-pressing mold for molding to obtain a finished product. According to the production process, the polyester fibers in the waste textiles are used as a thermoplastic matrix, the waste glass fibers are used as reinforcing fibers, other fibers are used as gap materials, no other low-melting fibers or resin materials need to be added in the processing process, and the manufacturing cost and the energy consumption are greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of felt making, and in particular to a production process for preparing a packaging box by utilizing waste textiles. Background Art

[0002] Waste textiles refer to old clothes and other household textile waste discarded by residents. The main components are polyester (PET), polypropylene (PP), cotton, wool and linen. The material proportion and chemical properties are uncontrollable, and the physical properties are seriously reduced by mechanical external forces, ultraviolet aging and other factors. It is necessary to learn from the preparation method of glass fiber composite materials to strengthen the structure in order to meet the use requirements. The preparation of traditional glass fiber composite materials generally adopts resin powder particles and glass fibers for impregnation. The technical bottleneck is to improve the uniformity of glass fiber dispersion in the resin. There are also studies in China on the use of glass fiber and polypropylene fiber (GF / PP) mixed method to manufacture boards. To a certain extent, the impregnation effect of PP substrate and glass fiber is improved, but because high-purity PP material must be used as the matrix, it is not suitable for the requirements of recycling waste textiles. Summary of the invention

[0003] The embodiment of the present invention provides a production process for preparing a packaging box using waste textiles, so as to solve the processing problem caused by the complex components in the waste textiles in the prior art.

[0004] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0005] A production process for preparing a packaging box using waste textiles comprises the following steps:

[0006] S1. Crush and cut waste textiles into pieces;

[0007] S2, soaking with ethylene glycol for no less than 15 minutes, opening the soaked waste textile into short fibers with a length range of 15 to 100 mm, and cutting the waste glass fibers into short glass fibers with a length range of 15 to 100 mm;

[0008] S3, mixing the short fibers and the short glass fibers in a ratio ranging from 1 to 8:1 to obtain a mixed material;

[0009] S4, sending the mixed material to a web laying machine, forming a web on a non-woven fabric substrate, and obtaining a mixed material web;

[0010] S5, sending the mixed material web into a needle punching machine, and obtaining a needle punched felt after needling;

[0011] S6. Use an oven to heat-melt the needle-punched felt, closely observe the melt-infiltration reaction, and when the heat shrinkage deformation reaches more than 30%, quickly transfer it to a hot pressing mold for molding to obtain a finished product.

[0012] Furthermore, the concentration range of ethylene glycol in S2 is 20 v％ -30 v％。

[0013] Furthermore, in S2, a feeding machine is used to loosen the waste textiles, and a gill carding machine is used to loosen the short fibers.

[0014] Furthermore, in S3, an air flow drum mixing method is used for mixing.

[0015] Furthermore, in S4, the mixed material is delivered to the web laying machine by air flow method, and the suction port of the air flow conveying device reciprocates between 45° and 135°.

[0016] Furthermore, in S5, the acupuncture amplitude ranges from 8 to 10 mm, and the acupuncture depth ranges from 10 to 30 mm.

[0017] Furthermore, in S6, the first stage oven is first entered, and the temperature range is 145°-165°. During the baking process, it is necessary to pay close attention to the melt infiltration deformation ratio. After the melt infiltration deformation of the needle felt is greater than 30%, the needle felt is quickly transferred to the second stage oven; the temperature range of the second stage oven is 200°-280°. During the baking process, it is necessary to pay close attention to the surface shrinkage of the needle felt. When the long pile disappears, the needle felt is quickly transferred to the hot pressing mold for molding.

[0018] Furthermore, the preset temperature of the mold is not less than 60°.

[0019] The embodiments of the present invention have the following advantages:

[0020] The present invention discloses a production process for preparing packaging boxes using waste textiles, which is a unique dry melt-impregnation felting method. The existing needle-punched felting process is technically improved, and the main polyester fiber (PET) in waste textiles is used as a thermoplastic matrix, the short fiber material of waste glass fiber (GF) is used as a reinforcing fiber, and other fibers in waste spinning are used as gap materials. No other low-melting fiber or resin material is added during the processing process, and the manufacturing cost and energy consumption are greatly reduced; and the different physical properties of GF / PET / PP fibers are fully utilized to improve the mixing uniformity of glass fiber and matrix fiber, and under different orders of hot melting conditions, the melt-impregnation effect of glass fiber and matrix fiber is improved, the fracture rate of glass fiber is reduced, and the mechanical properties of waste spinning glass fiber composite materials and the quality of finished products are significantly improved. The process uses waste textile polyester fiber (PET) eliminated from residents' domestic garbage as the main matrix material, and glass fiber as a reinforcing material. Through processes such as opening, mixing, web forming, needle-punching felting, melt-impregnation and hot pressing, a packaging box that can be used repeatedly is made. The packaging box can be used in many fields such as express delivery, electronics, and military. The plates made by this process have uniform mechanical properties in all directions, good thermoplasticity and smooth surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0023] Figure 1 A flow chart of a method for producing a packaging box using waste textiles provided by an embodiment of the present invention;

[0024] Figure 2 A flow chart of a process for producing packaging boxes by using a production process for producing packaging boxes using waste textiles is provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, a production process for preparing packaging boxes using waste textiles includes the following steps:

[0027] S1. Cut the waste textiles into pieces. A rag shredder can be used to cut rags and textile-like items into filaments, original single fibers, short fibers or fragments, crumbs, or powder to meet the requirements of subsequent processes.

[0028] S2, the concentration range is 20 v％ -30 v％The impregnated waste textiles are then opened with a feeding machine to obtain short fibers with a length range of 15 to 100 mm. Before S3, a gill combing machine is used to cut the waste glass fibers into short glass fibers with a length range of 15 to 100 mm.

[0029] S3. Mix the short fibers and the short glass fibers in a ratio of 1 to 8:1 to obtain a mixed material. In this embodiment, the airflow drum mixing method is used for mixing, wherein the airflow mixer sends compressed air into the mixing chamber through the nozzle on the mixing head. The material instantly spirals up along the cylinder wall with the compressed air to form a fluidized mixing state. After several pulse blowing and pause intervals, the material in the entire volume can be quickly and evenly mixed. At the same time, the rotation of the mixing chamber further improves the fluidity of the mixed material. Since there are no transmission devices such as mixing arms and mixing rods, special materials with wear, corrosion, flammability and explosion, poor fluidity, and easy-to-break particles can be effectively controlled and mixed.

[0030] S4. The mixed material is delivered to the web laying machine by air flow method. The suction port of the air flow conveying equipment reciprocates between 45° and 135°. The discharge port of the air flow conveying equipment and the feed port of the web laying machine are located at 180° tangent feeding. The air flow rotates clockwise. The air flow conveying equipment can adjust the wind speed, air volume and air flow rotation direction as needed. The web laying machine forms a web on the non-woven fabric substrate. The gram weight of the web ranges from 30 to 300g to obtain a mixed material web.

[0031] S5. The mixed material net is sent into the needle punching machine. Through needle punching, the two fibers are entangled with each other to strengthen the structural strength, and then the different fibers are fully mixed, creating conditions for the next step of melt infiltration reaction. After needle punching, a needle felt is obtained, wherein the needle punching amplitude range is 8-10mm, the needle punching depth is 10-30mm, and the needle punching frequency is adjusted according to the material stepping speed. Multiple needle punching deformations are formed at one point, so that the mixed fibers form fiber entanglement, and a loosely structured felt is formed from the outside. Moreover, the needle felt can be fed in a single layer or a double layer. When feeding in a double layer, the needle punching direction of the needle felt should be outward to ensure a higher melt infiltration rate of the outer layer fibers.

[0032] S6. Use an oven to heat-melt the needle felt. The oven is preferably a far-infrared oven. Closely observe the melt-infiltration reaction of the needle felt after entering the oven. When the heat shrinkage deformation reaches more than 30%, quickly transfer it to the hot pressing mold for molding to obtain a finished product. In this embodiment, a two-stage hot melt is used, and the specific operations include:

[0033] First enter the first stage oven, adjust the first stage oven temperature according to the material ratio and the length of the oven, the temperature range is 145°-165°, so that the PET fiber, glass fiber and PP material in the needle felt undergo preliminary melt infiltration reaction, and the PET fiber is also preheated. During the baking process, it is necessary to pay close attention to the melt infiltration deformation ratio, adjust the transmission speed and the temperature of the first stage oven according to the deformation speed of the material, and quickly transfer the needle felt to the second stage oven after the melt infiltration deformation of the needle felt is greater than 30%.

[0034] The temperature of the second-stage oven is adjusted according to the material ratio and the length of the oven. The temperature range of the second-stage oven is 200°-280°, so that the PET fiber, glass fiber and PP material in the needle-punched felt can undergo sufficient melt-infiltration reaction. During the baking process, it is necessary to pay close attention to the shrinkage of the needle-punched felt surface. When the long pile disappears, the needle-punched felt is quickly transferred to the hot pressing mold for molding to obtain a finished product.

[0035] In this technology, the hot pressing mold is a box body mold, such as Figure 2 As shown, the finished product is a packaging box or a packaging case, and a plurality of buckle or adhesive areas (such as attached Figure 2 The black area in the figure) is used to close and lock the packaging box.

[0036] Based on the above technical steps, the following embodiments 1-6 are made:

[0037] Example 1

[0038] S1. Crush and cut the waste textiles into pieces.

[0039] S2, using concentration 20 v％ The impregnated waste textiles are then opened with a feeding machine to obtain short fibers of 15 mm. Before S3, the waste glass fibers are cut into short glass fibers of 15 mm in length using a gill combing machine.

[0040] S3. The short fibers and the short glass fibers are mixed in a ratio of 1:1 to obtain a mixed material.

[0041] S4. The mixed material is delivered to the web laying machine by air flow method. The suction port of the air flow conveying equipment reciprocates between 45° and 135°. The discharge port of the air flow conveying equipment and the feed port of the web laying machine are located at 180° tangent feeding, and the air flow rotates clockwise. The web laying machine forms a web on the non-woven fabric substrate with a gram weight range of 30g to obtain a mixed material web.

[0042] S5. The mixed material web is fed into a needling machine with a needling amplitude of 8 mm and a needling depth of 10 mm, so that the mixed fibers form fiber entanglement.

[0043] S6, first enter the first stage oven, the temperature is 145 °, the melting deformation ratio needs to be closely monitored during the baking process, and when the melting deformation of the needle felt is greater than 30%, the needle felt is quickly transferred to the second stage oven.

[0044] The temperature of the second-stage oven is 200°. During the baking process, it is necessary to pay close attention to the shrinkage of the surface of the needle felt. When the long pile disappears, the needle felt is quickly transferred to the hot pressing mold for molding.

[0045] Example 2

[0046] S1. Crush and cut the waste textiles into pieces.

[0047] S2, using concentration 22 v％ The impregnated waste textiles are then opened with a feeding machine to obtain 30 mm short fibers. Before S3, the waste glass fibers are cut into short glass fibers with a length of 30 mm using a gill combing machine.

[0048] S3. The short fibers and the short glass fibers are mixed in a ratio of 2:1 to obtain a mixed material.

[0049] S4. The mixed material is delivered to the web laying machine by air flow method. The suction port of the air flow conveying equipment reciprocates between 45° and 135°. The discharge port of the air flow conveying equipment and the feed port of the web laying machine are located at 180° tangent feeding, and the air flow rotates clockwise. The web laying machine forms a web on the non-woven fabric substrate, and the gram weight range of the web is 80g, to obtain a mixed material web.

[0050] S5. The mixed material web is fed into a needling machine with a needling amplitude of 8.5 mm and a needling depth of 14 mm, so that the mixed fibers form fiber entanglement.

[0051] S6, first enter the first stage oven, the temperature is 148 °, the melting deformation ratio needs to be closely monitored during the baking process, and when the melting deformation of the needle felt is greater than 30%, the needle felt is quickly transferred to the second stage oven.

[0052] The temperature of the second-stage oven is 215°. During the baking process, it is necessary to pay close attention to the shrinkage of the surface of the needle felt. When the long pile disappears, the needle felt is quickly transferred to the hot pressing mold for molding.

[0053] Example 3

[0054] S1. Crush and cut the waste textiles into pieces.

[0055] S2, using concentration 24 v％The impregnated waste textiles are then opened with a feeding machine to obtain short fibers of 45 mm. Before S3, the waste glass fibers are cut into short glass fibers of 45 mm in length using a gill combing machine.

[0056] S3. The short fibers and the short glass fibers are mixed in a ratio of 3:1 to obtain a mixed material.

[0057] S4. The mixed material is delivered to the web laying machine by air flow method. The suction port of the air flow conveying equipment reciprocates between 45° and 135°. The discharge port of the air flow conveying equipment and the feed port of the web laying machine are located at 180° tangent feeding, and the air flow rotates clockwise. The web laying machine forms a web on the non-woven fabric substrate, and the gram weight range of the web is 130g to obtain a mixed material web.

[0058] S5. The mixed material web is fed into a needling machine with a needling amplitude of 9 mm and a needling depth of 18 mm, so that the mixed fibers form fiber entanglement.

[0059] S6, first enter the first stage oven, the temperature is 152 °, the melting deformation ratio needs to be closely monitored during the baking process, after the melting deformation of the needle felt is greater than 30%, the needle felt is quickly transferred to the second stage oven.

[0060] The temperature of the second-stage oven is 230°. During the baking process, it is necessary to pay close attention to the shrinkage of the surface of the needle felt. When the long pile disappears, the needle felt is quickly transferred to the hot pressing mold for molding.

[0061] Example 4

[0062] S1. Crush and cut the waste textiles into pieces.

[0063] S2, using concentration 26 v％ The impregnated waste textiles are then opened with a feeding machine to obtain 60 mm short fibers. Before S3, the waste glass fibers are cut into short glass fibers with a length of 60 mm using a gill combing machine.

[0064] S3. The short fibers and the short glass fibers are mixed in a ratio of 5:1 to obtain a mixed material.

[0065] S4. The mixed material is delivered to the web laying machine by air flow method. The suction port of the air flow conveying equipment reciprocates between 45° and 135°. The discharge port of the air flow conveying equipment and the feed port of the web laying machine are located at 180° tangent feeding, and the air flow rotates clockwise. The web laying machine forms a web on the non-woven fabric substrate with a gram weight range of 150g to obtain a mixed material web.

[0066] S5. The mixed material web is fed into a needling machine with a needling amplitude of 9.2 mm and a needling depth of 22 mm, so that the mixed fibers form fiber entanglement.

[0067] S6, first enter the first stage oven, the temperature is 158 °, the melting deformation ratio needs to be closely monitored during the baking process, and when the melting deformation of the needle felt is greater than 30%, the needle felt is quickly transferred to the second stage oven.

[0068] The temperature of the second-stage oven is 250°. During the baking process, it is necessary to pay close attention to the shrinkage of the surface of the needle felt. When the long pile disappears, the needle felt is quickly transferred to the hot pressing mold for forming.

[0069] Example 5

[0070] S1. Crush and cut the waste textiles into pieces.

[0071] S2, using concentration 28 v％ The impregnated waste textiles are then opened with a feeding machine to obtain 80 mm short fibers. Before S3, the waste glass fibers are cut into short glass fibers with a length of 80 mm using a gill combing machine.

[0072] S3. The short fibers and the short glass fibers are mixed in a ratio of 7:1 to obtain a mixed material.

[0073] S4. The mixed material is delivered to the web laying machine by air flow method. The suction port of the air flow conveying equipment reciprocates between 45° and 135°. The discharge port of the air flow conveying equipment and the feed port of the web laying machine are located at 180° tangent feeding, and the air flow rotates clockwise. The web laying machine forms a web on the non-woven fabric substrate, and the gram weight of the web is in the range of 220g to obtain a mixed material web.

[0074] S5. The mixed material web is fed into a needling machine with a needling amplitude of 9.5 mm and a needling depth of 25 mm, so that the mixed fibers form fiber entanglement.

[0075] S6, first enter the first stage oven, the temperature is 160 °, the melting deformation ratio needs to be closely monitored during the baking process, and when the melting deformation of the needle felt is greater than 30%, the needle felt is quickly transferred to the second stage oven.

[0076] The temperature of the second stage oven is 265°. During the baking process, it is necessary to pay close attention to the shrinkage of the surface of the needle felt. When the long pile disappears, the needle felt is quickly transferred to the hot pressing mold for molding.

[0077] Example 6

[0078] S1. Crush and cut the waste textiles into pieces.

[0079] S2, using concentration 30 ％The impregnated waste textiles are then opened with a feeding machine to obtain short fibers of 100 mm. Before S3, the waste glass fibers are cut into short glass fibers of 100 mm in length using a gill combing machine.

[0080] S3. The short fibers and the short glass fibers are mixed in a ratio of 8:1 to obtain a mixed material.

[0081] S4. The mixed material is delivered to the web laying machine by air flow method. The suction port of the air flow conveying equipment reciprocates between 45° and 135°. The discharge port of the air flow conveying equipment and the feed port of the web laying machine are located at 180° tangent feeding, and the air flow rotates clockwise. The web laying machine forms a web on the non-woven fabric substrate, and the gram weight of the web is in the range of 300g to obtain a mixed material web.

[0082] S5. The mixed material web is fed into a needling machine with a needling amplitude of 10 mm and a needling depth of 30 mm, so that the mixed fibers form fiber entanglement.

[0083] S6, first enter the first stage oven, the temperature is 165 °, the melting deformation ratio needs to be closely monitored during the baking process, and when the melting deformation of the needle felt is greater than 30%, the needle felt is quickly transferred to the second stage oven.

[0084] The temperature of the second-stage oven is 280°. During the baking process, it is necessary to pay close attention to the shrinkage of the surface of the needle felt. When the long pile disappears, the needle felt is quickly transferred to the hot pressing mold for molding.

[0085] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A production process for preparing packaging boxes using waste textiles, characterized in that: The following steps are involved: S1. Crush and cut waste textiles into pieces; S2, soaking with ethylene glycol for no less than 15 minutes, opening the soaked waste textile into short fibers with a length range of 15 to 100 mm, and cutting the waste glass fibers into short glass fibers with a length range of 15 to 100 mm; S3, mixing the short fibers and the short glass fibers in a ratio ranging from 1 to 8:1 to obtain a mixed material; S4, sending the mixed material to a web laying machine, forming a web on a non-woven fabric substrate, and obtaining a mixed material web; S5, sending the mixed material web into a needle punching machine, and obtaining a needle punched felt after needling; S6. Use an oven to heat-melt the needle-punched felt, closely observe the melt-infiltration reaction, and when the heat shrinkage deformation reaches more than 30%, quickly transfer it to a hot pressing mold for molding to obtain a finished product.

2. The production process for preparing packaging boxes using waste textiles according to claim 1, characterized in that: The concentration range of ethylene glycol in S2 is 20 v ％ -30 v ％ 。 3. The production process for preparing packaging boxes using waste textiles according to claim 1 is characterized in that: In S2, a feeding machine is used to open the waste textiles, and a gill carding machine is used to open the short fibers.

4. The production process for preparing packaging boxes using waste textiles according to claim 1 is characterized in that: In S3, the mixing is performed by an air flow drum mixing method.

5. The production process for preparing packaging boxes using waste textiles according to claim 1 is characterized in that: In S4, the mixed material is delivered to the web laying machine by air flow method, and the suction port of the air flow conveying device reciprocates between 45° and 135°.

6. The production process for preparing packaging boxes using waste textiles according to claim 1 is characterized in that: In the S5, the acupuncture amplitude ranges from 8 to 10 mm, and the acupuncture depth ranges from 10 to 30 mm.

7. The production process for preparing packaging boxes using waste textiles according to claim 1 is characterized in that: In the step S6, the first stage oven is firstly entered, and the temperature range is 145°-165°. During the baking process, the melt-infiltration deformation ratio needs to be closely monitored. After the melt-infiltration deformation of the needle felt is greater than 30%, the needle felt is quickly transferred to the second stage oven; The temperature range of the second stage oven is 200°-280°. During the baking process, it is necessary to pay close attention to the shrinkage of the needle felt surface. When the long pile disappears, the needle felt is quickly transferred to the hot pressing mold for molding.

8. The production process for preparing packaging boxes using waste textiles according to claim 1 or 7, characterized in that: The preset temperature of the mold is not less than 60°.

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