A method and device for making buffer material using plant fiber pulp

Abstract

The present invention discloses a method for making a cushioning material using plant fiber pulp, which comprises: continuously spraying the plant fiber pulp onto a rolling mold; the rolling mold continuously rotates to form a continuous and retractable cushioning material by compression molding. The present invention also provides a device for making a cushioning material, which is used to make the plant fiber pulp in a pulp pool into the cushioning material, and comprises: a spraying machine and a rolling mold, the spraying machine is used to extract the plant fiber pulp from the pulp pool and spray out the plant fiber pulp; the rolling mold is used to rotate the compression mold to form the cushioning material, and the spraying machine sprays the plant fiber pulp onto the rolling mold. The production equipment and method provided by the present invention solve the technical problems of low production efficiency, complex process and inability to meet lightweight requirements when the cushioning material made by the existing plant fiber pulp carrier or pallet is used in the express packaging field.

Description

Technical Field

[0001] The invention relates to the field of making paper cushioning materials, and in particular to a method and equipment for making cushioning materials by using plant fiber pulp. Background Art

[0002] The existing plant fiber pulp making carriers or trays are relatively mature, mainly including: first, the plant fiber pulp is scooped out from the pulp pool through a scooping tool with a certain water leakage function to remove some water, and then the scooped plant fiber pulp is passed through a compression molding machine for compression molding. During compression molding, heating is required to further remove water. A common shape is compression molded into an egg tray, and then the compression molded shape is dried in a dryer and solidified to form a finished product.

[0003] The buffer material that the inventor wants to make is a paper pad used in the packaging field that can play a protective buffering role. This buffer material needs to be used in the express packaging and envelope buffering fields. There are specific requirements for buffer materials, and the above plant fiber pulp process for making pallets or carriers cannot meet the requirements. It is difficult to make the buffer material of the present invention using the method of making a carrier or pallet with plant fiber pulp. The process of making a carrier with plant fiber pulp has the following defects when making buffer materials:

[0004] 1. The cushioning material is thick and heavy, and the weight per square meter is generally not less than 200g. If it is used in the express packaging field, it will increase the weight of express packaging bags and envelope bags, and the transportation cost will increase sharply;

[0005] 2. During compression molding, the material needs to be formed piece by piece, and the formed material is a sheet material. When the sheet material is used to make packaging bags and other express packaging and envelopes, it needs to be grabbed and placed. The grabbing and placing actions involve operations such as grabbing and positioning. Compared with the coil unwinding production method, it will lead to complex processes, increased production equipment and reduced production efficiency;

[0006] 3. During compression molding, the compression molding machine needs to maintain the heating state for a period of time to evaporate the water in the slurry of plant fiber. The holding time is relatively long, generally about 2 minutes, which means that only one sheet can be produced every 2 minutes, and the production efficiency is too low. Summary of the invention

[0007] The purpose of the present invention is to provide a method for making a cushioning material using plant fiber pulp, aiming to solve the technical problems of low production efficiency, complex process and inability to meet lightweight requirements when the cushioning material made by using the existing plant fiber pulp to make carriers or pallets is used in the express packaging field.

[0008] The present invention discloses a method for making a buffer material using plant fiber pulp. The method comprises:

[0009] The plant fiber slurry is continuously sprayed onto the rolling mold;

[0010] The rolling die is continuously rotated to form a continuously retractable cushioning material by compression molding.

[0011] The rolling die absorbs the plant fiber pulp, and releases the buffer material after the rolling die is compression molded. The plant fiber pulp is compression molded to form the continuous buffer material having a concave-convex surface.

[0012] Among them, the rolling mold includes a first rolling roller and a second rolling roller, the first rolling roller and the second rolling roller are arranged opposite to each other, the first rolling roller and the second rolling roller rotate synchronously, the first rolling roller is provided with a plurality of inner concave holes, and the second rolling roller is provided with a plurality of protrusions, the inner concave holes and the protrusions correspond to each other; when the first rolling roller and the second rolling roller rotate, at least a portion of the protrusions are located in part of the inner concave holes.

[0013] The rolling die removes moisture from the plant fiber slurry during compression molding; and the rolling die performs water removal treatment on the plant fiber slurry before rolling molding.

[0014] The rolling depth of the rolling die can be adjusted to adapt to plant fiber pulp with different moisture contents and / or thickness of buffer materials.

[0015] Wherein, the method also includes drying and rolling, and after the rolling mold continuously rotates to compression-mold the cushioning material, it is dried and rolled into a coil. In the present invention, the plant fiber slurry is sprayed continuously onto the rolling mold, and the rolling mold can form a continuous roll material after rotating the mold, and can form a coil after rolling. When the rolled cushioning material is used in packaging materials such as express bags and envelopes, it can be made by unwinding. Compared with the traditional method of making a single sheet of pallets or carriers, it can be manufactured by conveying and feeding, and operations such as grabbing and placing are no longer required, and the production efficiency of the equipment is improved; in addition, it overcomes the technical problems of long compression molding time and long time required for water evaporation during the existing compression molding by mold, and removes water by heating during the rotation of the mold, and only needs to control the rotation rate of the rolling mold.

[0016] Finally, when making cushioning materials of different thicknesses, controlling the amount of spraying and the rotation rate of the rolling mold can achieve thickness control and achieve lightweight requirements.

[0017] Another object of the present invention is to disclose a device for making a cushioning material using plant fiber pulp, by which lightweight cushioning materials can be made, while also overcoming the problem of low efficiency in making cushioning materials using existing plant fiber pulp.

[0018] The invention discloses a device for making a buffer material by using plant fiber pulp, which is used for making the buffer material from the plant fiber pulp in a pulp pool, and the buffer material can be continuously rolled up.

[0019] The device comprises:

[0020] A spraying machine, the spraying machine is used to extract plant fiber slurry from the slurry pool and spray out the plant fiber slurry;

[0021] A rolling mold is used for rotating a die to form the buffer material, and the spraying machine sprays the plant fiber slurry onto the rolling mold.

[0022] Wherein, the rolling die comprises:

[0023] A first rolling roller, wherein a plurality of inner concave holes are arranged on the surface of the first rolling roller, and the inner concave holes are used to absorb the plant fiber pulp;

[0024] A second rolling roller, wherein a plurality of protrusions are arranged on the second rolling roller, wherein the protrusions correspond to the inner concave holes, and when the first rolling roller and the second rolling roller rotate, at least a portion of the protrusions are located in a portion of the inner concave holes, and a portion of the plant fiber pulp is molded in the protrusions and the inner concave holes.

[0025] A heating structure, which is arranged inside the rolling roller and is used to heat the rolling roller, thereby drying the plant fiber pulp passing through the rolling roller die;

[0026] A conveyor line, the conveyor line is used to convey the buffer material, a drying device is provided on the conveyor line, the drying device is used to dry the buffer material when the conveyor line conveys the buffer material, and one end of the conveyor line is connected to the rear end of the second rolling roller;

[0027] A winding device is connected to the other end of the conveyor line, and is used for winding up the buffer material after drying.

[0028] The first rolling roller and the second rolling roller are arranged opposite to each other, and the first rolling roller and the second rolling roller rotate synchronously.

[0029] Wherein, the first rolling roller comprises:

[0030] Rotating shaft;

[0031] A rotating roller, arranged on the rotating shaft and rotating relative to the rotating shaft, a surface of the rotating roller is provided with a plurality of inner concave holes arranged in an array, the inner concave holes in the same row are connected to each other through a conducting channel, and the conducting channel is arranged parallel to the rotating shaft and extends to the bottom edge of the rotating roller;

[0032] An annular negative pressure zone, wherein the annular negative pressure zone is arranged on the rotating roller, the annular negative pressure zone is connected to a negative pressure pump, the annular negative pressure zone is a fan-shaped area, the annular negative pressure zone is connected to the channel toward the side of the rotating roller, and the annular negative pressure zone is arranged toward the shotcrete machine.

[0033] A water filter cloth is also provided at the front end of the first rolling roller, one end of the water filter cloth faces the second rolling roller, and the other end of the water filter cloth faces the spraying machine, and the spraying machine sprays the plant fiber slurry toward the water filter cloth and / or the first rolling roller.

[0034] By using the equipment of the present invention to produce cushioning materials, on the one hand, the cushioning materials can be made lighter, and on the other hand, the production efficiency of the cushioning materials themselves can be improved. The rolled cushioning materials can be used to produce express packaging bags, envelopes, etc. by unwinding and conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the device disclosed in the present invention;

[0036] Figure 2 It is a schematic diagram of the main working process of the device of the present invention;

[0037] Figure 3 It is a schematic diagram of the structure of the buffer material made by the device of the present invention;

[0038] Figures 4 to 6 A schematic diagram of the structure of the first rolling roller of the present invention;

[0039] Figure 7 It is a schematic diagram of the structure of the second rolling roller of the present invention;

[0040] Figure 8 is a flow chart of a method for making a buffer material according to the present invention;

[0041] Fig. 9 It is a process step diagram of the method of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described and illustrated below in conjunction with specific embodiments and accompanying drawings:

[0043] Please refer to Figure 1 and Figure 2The present invention discloses a device 100 for making a buffer material 300 using plant fiber pulp. The device 100 is used to make the plant fiber pulp in a pulp pool 200 into the buffer material 300. The buffer material 300 is a coil that can be continuously rolled up.

[0044] Among them, the equipment 100 includes a spraying machine 11 and a rolling mold 12. The spraying machine 11 is used to extract plant fiber slurry from the slurry pool 200 and spray the plant fiber slurry to the rolling mold 12. The spraying machine 11 can control the thickness and quality of the buffer material 300 by controlling the spraying amount to achieve the purpose of lightweighting.

[0045] like Figure 3 The rolling mold 12 is used to rotate and mold to form the buffer material 300. The surface of the rolling mold 12 is provided with an inner concave hole 121, and the plant fiber pulp is adsorbed through the inner concave hole 121 to prevent the plant fiber pulp from escaping from the rolling mold 12 before rolling. A heating structure 122 is provided in the rolling mold 12. The rolling mold 12 heats the plant fiber pulp during the rolling forming process to remove moisture in the plant fiber pulp and form the relatively dry and formable buffer material 300.

[0046] See 4 to Figure 7 Specifically, the rolling mold 12 includes: a first rolling roller 123, a second rolling roller 124, the heating structure 122, a conveying line 125 and a winding device 126.

[0047] Among them, a plurality of inner concave holes 121 are arranged on the surface of the first rolling roller 123, and the inner concave holes 121 are used to absorb the plant fiber pulp. Specifically: the first rolling roller 123 includes a rotating shaft 1231, a rotating roller 1232 and an annular negative pressure area 1233. The rotating roller 1232 is arranged on the rotating shaft 1231 and rotates relative to the rotating shaft 1231. A plurality of inner concave holes 121 arranged in an array are arranged on the surface of the rotating roller 1232. The inner concave holes 121 in the same column are connected to each other through a conducting channel 127, and the inner concave holes 121 in the same row are arranged at intervals along the circumference of the rotating roller 1232. The conducting channel 127 is arranged parallel to the rotating shaft 1231 and extends to the bottom edge of the rotating roller 1232.

[0048] A baffle 1211 is disposed at the bottom of the inner concave holes 121 , and an opening 1212 is disposed on the baffle 1211 . The openings 1212 on the inner concave holes 121 in the same row are connected to one of the conducting channels 127 .

[0049] The annular negative pressure area 1233 is arranged on the rotating roller 1232, and the annular negative pressure area 1233 is connected with a negative pressure pump 128. The annular negative pressure area 1233 is a fan-shaped area, and the side of the annular negative pressure area 1233 facing the rotating roller 1232 is open, and is tightly matched with the side of the rotating roller 1232 facing the annular negative pressure area 1233; at the same time, the conducting channel 127 extends to the side of the rotating roller 1232 facing the annular negative pressure area 1233, when the rotating roller 1232 rotates When the rotating roller 1232 is in motion, the conducting channel 127 on the rotating roller 1232 is sequentially connected with the annular negative pressure area 1233, and the negative pressure pump 128 sets the inner concave hole 121 in the area corresponding to the annular negative pressure area 1233 to negative pressure through the annular negative pressure area 1233 and the conducting channel 127, thereby adsorbing the plant fiber pulp; when the rotating roller 1232 continues to rotate, the conducting channel 127 returns to normal pressure in the inner concave hole 121 after leaving the area corresponding to the annular negative pressure area 1233, and the inner concave hole 121 releases the plant fiber pulp. The annular negative pressure area 1233 is set toward one side of the spraying machine 11. After the spraying machine 11 sprays out the plant fiber pulp, it is adsorbed by the rotating roller 1232 and the inner concave hole 121 with negative pressure near the spraying machine 11.

[0050] The heating structure 122 is arranged inside the rotating roller 1232, and is used to heat the rotating roller 1232, and dry the plant fiber pulp that is pressed by the rotating roller 1232. The inner concave holes 121 are arranged in an array, and the heating structure 122 is arranged between two adjacent rows or columns of the inner concave holes 121. The heating structure 122 is arranged on the inner wall of the rotating roller 1232 close to the surface. When the rotating roller 1232 rotates, the water in the plant fiber pulp that has been adsorbed or is being rolled and formed is heated to remove the water, thereby achieving fixed mold.

[0051] The second rolling roller 124 is arranged opposite to the first rolling roller 123. A plurality of protrusions 1241 are arranged on the second rolling roller 124, and the protrusions 1241 correspond to the inner concave holes 121. When the first rolling roller 123 and the second rolling roller 124 rotate, at least a portion of the protrusions 1241 is located in a portion of the inner concave holes 121, and a portion of the plant fiber pulp is molded in the protrusions 1241 and the inner concave holes 121.

[0052] In the present invention, the first rolling roller 123 and the second rolling roller 124 rotate synchronously.

[0053] In this embodiment, the first rolling roller 123 is pressed together with the second rolling roller 124 to achieve die forming, wherein the distance between the first rolling roller 123 and the second rolling roller 124 can be adjusted, and can be controlled according to the thickness and weight of the buffer material 300 to be roll-formed. For example, when the buffer material 300 needs to be lighter and thinner, on the one hand, the spraying amount of the spraying machine 11 is controlled to be reduced, and on the other hand, the distance between the first rolling roller 123 and the second rolling roller 124 is adjusted to reduce, thereby achieving the production of lightweight buffer material 300; on the contrary, when the buffer material 300 needs to be thicker, the spraying amount of the spraying machine 11 is increased, and the height of the first rolling roller 123 is raised to adapt to the rolling forming of the relatively thick buffer material 300. Among them, the rotation speed of the first rolling roller 123 can be controlled. When the thickness of the buffer material 300 increases, the rotation speed of the first rolling roller 123 is reduced. When the thickness of the buffer material 300 decreases, the rotation speed of the first rolling roller 123 is appropriately increased, thereby improving production efficiency.

[0054] like Figure 1 In another embodiment of the present invention, a water filter cloth S is further provided at the front end of the first rolling roller 123, one end of the water filter cloth S is connected to the second rolling roller 124, and the other end of the water filter cloth S is facing the spraying machine 11, and the spraying machine 11 sprays the plant fiber slurry toward the water filter cloth S and / or the first rolling roller 123.

[0055] In this embodiment, a part of the plant fiber slurry sprayed by the spraying machine 11 is first filtered through the water filter cloth S and then flows into the space between the first rolling roller 123 and the second rolling roller 124 to achieve rolling forming. The setting of the water filter cloth S can reduce the moisture in the plant fiber slurry before rolling to the maximum extent, and the moisture flows out through the water filter cloth S, and the plant fiber slurry slowly flows into the space between the first rolling roller 123 and the second rolling roller 124; on the other hand, it can also receive part of the plant fiber slurry dropped from the first rolling roller 123 to prevent the plant fiber slurry from stacking at the front end of the first rolling roller 123 after long-term use, thereby causing the problem of uneven thickness of the buffer material 300.

[0056] See also Figure 1 and Figure 2In this embodiment, the equipment 100 also includes a conveyor line 125 and a winding device 126. The conveyor line 125 is used to convey the buffer material 300. The conveyor line 125 is provided with a drying device 129, which is used to dry the buffer material 300 when the conveyor line 125 conveys the buffer material 300. One end of the conveyor line 125 is connected to the rear end of the second rolling roller 124; the winding device 126 is connected to the other end of the conveyor line 125, and the winding device 126 is used to wind up the dried buffer material 300.

[0057] When the equipment 100 of the present invention is used to make the buffer material 300, the spraying amount of the spraying machine 11 is first adjusted according to the weight and thickness of the buffer material 300 to be made, and then the height between the first rolling roller 123 and the second rolling roller 124 is controlled, and the rotation speed of the first rolling roller 123 and the second rolling roller 124 is adjusted. After the above adjustments, the buffer material 300 is formed by rolling, heating to evaporate moisture, and drying.

[0058] By using the device 100 of the present invention to produce the cushioning material 300, on the one hand, the cushioning material 300 can be made lighter, and on the other hand, the production efficiency of the cushioning material 300 itself can be improved. The rolled cushioning material 300 can be used to make express packaging bags, envelopes, etc. by unwinding and conveying, which is more efficient than the sheet grabbing method.

[0059] like Figure 8 and Fig. 9 The present invention also discloses a method for making a buffer material 300 using plant fiber pulp, the method comprising:

[0060] 1. Continuously spray the plant fiber slurry onto the rolling mold 12;

[0061] 2. The rolling mold 12 is continuously rotated to form the continuously retractable cushioning material 300 by compression molding.

[0062] In the present invention, the plant fiber pulp is directly sprayed onto the rotating rolling mold 12 and is formed by the rotating rolling mold 12. On the one hand, it can improve production efficiency, and on the other hand, it can produce a strip-shaped coil, which is convenient for further processing of the buffer material 300 in the later stage. For example, the buffer material 300 is unrolled and set as the inner core or buffer layer of a packaging bag or other structure, which is more efficient than traditional sheet material grabbing. In addition, the quality of the buffer material 300 can be controlled by rolling forming to achieve the purpose of lightweighting. Figures 1 to 6 In the present invention, the rolling die 12 is provided with an inner concave hole 121, and the inner concave hole 121 is used to absorb the plant fiber pulp, and the buffer material 300 having a concave-convex surface and being continuous is formed after compression molding.

[0063] The rolling mold 12 includes a first rolling roller 123 and a second rolling roller 124, the first rolling roller 123 and the second rolling roller 124 are arranged opposite to each other, the first rolling roller 123 and the second rolling roller 124 rotate synchronously, a plurality of inner concave holes 121 are arranged on the first rolling roller 123, and a plurality of protrusions 1241 are arranged on the second rolling roller 124, and the inner concave holes 121 and the protrusions 1241 correspond to each other; when the first rolling roller 123 and the second rolling roller 124 rotate, at least a portion of the protrusions 1241 are located in part of the inner concave holes 121.

[0064] The rolling depth of the rolling mold 12 is adjustable to adapt to plant fiber pulp with different moisture contents and / or thickness of the buffer material 300 .

[0065] The method of the present invention further includes drying and rolling. After the rolling mold 12 continuously rotates to compression-mold the cushioning material 300, it is dried and rolled into a coil.

[0066] In the present invention, the inner concave holes 121 absorb plant fiber pulp. After rolling forming, the plant fiber pulp absorbed in the inner concave holes 121 forms protrusions on the surface of the buffer material 300. These protrusions and the unabsorbed parts together form the concave-convex surface. These protrusions can increase the buffering performance of the buffer material 300.

[0067] In the buffer material 300 manufactured by the method of the present invention, the thickness and weight of the buffer material 300 can be controlled, and the production efficiency of the buffer material 300 can also be ensured.

[0068] The self-heating method can be used to evaporate water from the plant fiber pulp during the rotation of the rolling roller, thereby ensuring that the buffer material 300 is basically formed after rolling.

[0069] The rolling die 12 removes moisture from the plant fiber slurry during compression molding; the rolling die 12 filters the plant fiber slurry before rolling molding. A water filter cloth S is provided at the front end of the rolling die 12, the plant fiber slurry is sprayed onto the water filter cloth S and / or the rolling die 12, and the plant fiber slurry on the water filter cloth S flows into the rolling die 12, and the water filter cloth S is used to filter the moisture from the plant fiber slurry.

[0070] One of the ways is to spray the plant fiber pulp directly onto the water filter cloth S, and then pass the plant fiber pulp through the water filter cloth S after filtering the water, and then pass through the rolling mold 12. At this time, the water filter cloth S has filtered most of the water, which can effectively reduce the water that needs to be evaporated on the rolling mold 12, and can make the rolling mold 12 rotate at a faster speed. Compared with the implementation method without the water filter cloth S, the production efficiency is further improved. At the same time, adding the water filter cloth S can also make part of the plant fiber pulp that is not adsorbed on the rolling mold 12 be recovered, and then enter the rolling mold 12 after recovery, so as to achieve the purpose of saving raw materials, and it is more convenient, and there is no need to set up a plant fiber pulp recovery device at the front end of the rolling mold 12.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A method for making a cushioning material using plant fiber pulp, characterized in that: Includes the following: The plant fiber slurry is continuously sprayed onto the rolling mold; The rolling die is continuously rotated to form a continuous and retractable cushioning material by compression molding; the rolling die absorbs the plant fiber pulp, and releases the cushioning material after the rolling die is compression molded, and the plant fiber pulp is formed into the cushioning material having a concave-convex surface and being continuous after compression molding; Among them, the rolling mold includes a first rolling roller and a second rolling roller, the first rolling roller and the second rolling roller are arranged opposite to each other, the first rolling roller and the second rolling roller rotate synchronously, the first rolling roller is provided with a plurality of inner concave holes, and the second rolling roller is provided with a plurality of protrusions, the inner concave holes and the protrusions correspond to each other; when the first rolling roller and the second rolling roller rotate, at least a portion of the protrusions are located in part of the inner concave holes.

2. The method for making a cushioning material using plant fiber pulp according to claim 1, characterized in that: The rolling mold removes moisture from the plant fiber pulp during compression molding; the rolling mold performs water removal treatment on the plant fiber pulp before rolling molding.

3. The method for making a buffer material using plant fiber pulp according to claim 1 or 2, characterized in that: The rolling depth of the rolling die can be adjusted to adapt to plant fiber pulp with different moisture contents and / or thickness of buffer materials.

4. The method for making a buffer material using plant fiber pulp according to claim 1, characterized in that: The method further comprises drying and rolling. After the rolling die continuously rotates to compression-mold the buffer material, the buffer material is rolled into a coil after drying.

5. A device for making a buffer material using plant fiber pulp, used for making the buffer material from the plant fiber pulp in the pulp pool, characterized in that: The cushioning material is continuously retractable; the device comprises: A spraying machine, the spraying machine is used to extract plant fiber slurry from the slurry pool and spray out the plant fiber slurry; A rolling mold, wherein the rolling mold is used to rotate the mold to form the buffer material, and the spraying machine sprays the plant fiber slurry onto the rolling mold; The rolling die comprises: A first rolling roller, wherein a plurality of inner concave holes are arranged on the surface of the first rolling roller, and the inner concave holes are used to absorb the plant fiber pulp; a second rolling roller, wherein a plurality of protrusions are arranged on the second rolling roller, wherein the protrusions correspond to the inner concave holes, and when the first rolling roller and the second rolling roller rotate, at least a portion of the protrusions are located in a portion of the inner concave holes, and a portion of the plant fiber pulp is molded in the protrusions and the inner concave holes; A heating structure, the heating structure is arranged inside the first rolling roller, and is used to heat the first rolling roller, so as to dry the plant fiber pulp passing through the die of the first rolling roller; The first rolling roller and the second rolling roller are arranged opposite to each other, and the first rolling roller and the second rolling roller rotate synchronously.

6. The device for making a buffer material using plant fiber pulp as claimed in claim 5, characterized in that: The first rolling roller comprises: Rotating shaft; A rotating roller, arranged on the rotating shaft and rotating relative to the rotating shaft, a surface of the rotating roller is provided with a plurality of inner concave holes arranged in an array, the inner concave holes in the same row are connected to each other through a conducting channel, and the conducting channel is arranged parallel to the rotating shaft and extends to the bottom edge of the rotating roller; An annular negative pressure zone, the annular negative pressure zone is arranged on the rotating roller, the annular negative pressure zone is connected to a negative pressure pump, the annular negative pressure zone is a fan-shaped area, the annular negative pressure zone is connected to the conduction channel toward the side of the rotating roller, and the annular negative pressure zone is arranged toward the shotcrete machine.

7. The device for making a cushioning material using plant fiber pulp as claimed in claim 6, characterized in that: A water filter cloth is also provided at the front end of the first rolling roller, one end of the water filter cloth faces the second rolling roller, and the other end of the water filter cloth faces the spraying machine, and the spraying machine sprays the plant fiber slurry toward the water filter cloth and / or the first rolling roller.

Images