Polyolefin composition and preparation process thereof

Abstract

The invention relates to the field of polyolefin composition preparation, in particular to a polyolefin composition and a preparation process thereof, which can improve the efficiency of filtering impurities among produced polyolefin particles before circulation packaging, and the process comprises the following steps: S1, enabling molded polyolefin particles to flow into a preparation device in a butt joint manner; s2, screening and circulating the particles through a preparation device; s3, the sieved and filtered particles are evenly distributed and flatly laid through a preparation device to be bagged; s4, the packaging bag used for packaging the particles is pressed through the preparation device; and S5, intermittently adhering incense powder to the surfaces of particles while screening and circulating in S2, and adopting the polyolefin composition prepared by the process, the polyolefin composition is prepared from the following raw materials in parts by weight: 48 parts of polyolefin resin, 50 parts of ethylene-vinyl alcohol random copolymer, 48 parts of polypropylene, 34 parts of flame-retardant synergist and 9 parts of charring agent.

Description

Technical Field

[0001] This invention relates to the field of polyolefin composition preparation, and more specifically to a polyolefin composition and its preparation process. Background Technology

[0002] Polyolefin compositions are a class of polymeric materials with the largest output and widest application due to their abundant raw materials, low price, ease of processing and molding, and excellent comprehensive performance. Polyethylene and polypropylene are the most important among them. The main varieties include polyethylene and some ethylene-based copolymers, such as ethylene-vinyl acetate copolymers, ethylene-acrylic acid or acrylate copolymers, as well as polypropylene and some propylene copolymers, poly-1-butene, poly-4-methyl-1-pentene, and cyclic olefin polymers. In the existing polyolefin composition production process, for example, a polyolefin composition and its application described in application number 202111336529.7 can avoid the risk of electric leakage and fire in polyolefin materials, improving the safety of polyolefin materials. However, after the entire process of producing polyolefin granules, impurities inevitably remain on the surface of the granules before packaging. Therefore, it is not suitable to improve the efficiency of filtering impurities between granules before distribution and packaging. Summary of the Invention

[0003] The purpose of this invention is to provide a polyolefin composition and its preparation process, which can improve the efficiency of filtering impurities between polyolefin particles before distribution and packaging.

[0004] The objective of this invention is achieved through the following technical solution: a process for preparing a polyolefin composition, the process comprising the following steps:

[0005] S1: The formed polyolefin particles are fed into the preparation device.

[0006] S2: The particles are filtered and passed through the preparation device;

[0007] S3: The filtered particles are evenly distributed and spread out using a preparation device for bagging.

[0008] S4: Press the packaging bag for packaging the granules using the preparation device;

[0009] S5: While the particles are being filtered and flowed through S2, fragrance powder is intermittently applied to their surface.

[0010] The preparation device includes a placement frame and a lead screw rotatably connected to the rear side of the placement frame. The front side of the placement frame is slidably connected to the front side of a flow frame, the rear side of the flow frame is drivenly connected to the lead screw, and a filter ring is slidably connected to the upper side of the flow frame.

[0011] The filter ring is provided with multiple small holes evenly distributed along its circumference.

[0012] An arc-shaped frame is fixedly connected to the right side of the flow frame. Multiple guide columns are uniformly rotatably connected to the arc-shaped frame along the circumferential direction. The middle part of each guide column is uniformly in contact with the upper side of the inside of the filter ring.

[0013] The outer right side of the filter ring has multiple teeth, and the rear side of the flow frame is rotatably connected to a rotating rod. A gear is fixedly connected to the middle of the rotating rod, and the gear meshes with the teeth on the filter ring for transmission.

[0014] The polyolefin composition prepared by the above process is composed of the following raw materials in parts by weight: 48 parts polyolefin resin, 50 parts ethylene-vinyl alcohol random copolymer, 48 parts polypropylene, 34 parts flame retardant synergist, and 9 parts charring agent. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the process flow for preparing a polyolefin composition according to the present invention;

[0017] Figure 2 This is a partial structural schematic diagram of the placement rack of the present invention;

[0018] Figure 3 This is a partial structural schematic diagram of the flow frame of the present invention;

[0019] Figure 4 This is a partial structural schematic diagram of the filter ring of the present invention;

[0020] Figure 5 This is a partial structural schematic diagram of the guide column of the present invention;

[0021] Figure 6 This is a partial structural schematic diagram of the right-angle frame of the present invention;

[0022] Figure 7 This is a partial structural schematic diagram of the material storage tube of the present invention;

[0023] Figure 8 This is a partial structural schematic diagram of the square frame of the present invention;

[0024] Figure 9 This is a schematic diagram of the overall structure of the present invention;

[0025] In the figure: Placement rack 101; Lead screw 102; Flow frame 103; Arc frame 104; Diverter frame 105; Screen ring 201; Rotating rod 202; Gear 203; Guide column 301; Right angle frame 401; Material storage tube 402; Square frame 501; Pressing angle 502; Electric push rod 503. Detailed Implementation

[0026] A process for preparing a polyolefin composition, the process comprising the following steps:

[0027] S1: The formed polyolefin particles are fed into the preparation device.

[0028] S2: The particles are filtered and passed through the preparation device;

[0029] S3: The filtered particles are evenly distributed and spread out using a preparation device for bagging.

[0030] S4: Press the packaging bag for packaging the granules using the preparation device;

[0031] S5: While the particles are being filtered and flowed through S2, fragrance powder is intermittently applied to their surface.

[0032] This section is based on Figure 2-4 The working process described in section 9 is as follows: To improve the efficiency of filtering impurities between polyolefin granules before distribution packaging, during use, the polyolefin granules are connected to the inside of the distribution frame 103. To keep the distribution frame 103 horizontal, its front side is slidably connected to the placement rack 101, and its rear side is threadedly connected to the lead screw 102, thus keeping the distribution frame 103 horizontal. Furthermore, the left side of the lead screw 102 is fixedly connected to the output shaft of the first motor via a coupling. When the first motor is driven, the lead screw 102... 02. Rotation allows the flow frame 103, which contains polyolefin particles, to move laterally and distribute the material evenly. When the polyolefin particles inside the flow frame 103 are being filtered, a filter ring 201 is circumferentially connected to the upper inner side of the flow frame 103. As the filter ring 201 slides circumferentially, its inner surface continuously rubs against the polyolefin particles, causing impurities to adhere to the inner surface of the filter ring 201 and allowing the polyolefin particles to continue flowing. This improves the efficiency of filtering impurities between the polyolefin particles before they are packaged.

[0033] This section is based on Figure 2-4 The working process described in 9 is as follows: multiple small holes are evenly provided on the filter ring 201 along the circumferential direction, so that when the filter ring 201 slides circumferentially, the inner surface of the filter ring 201 is continuously rubbed against the polyolefin particles, thereby causing impurities to adhere to the inner surface of the filter ring 201 and allowing the polyolefin particles to continue to flow.

[0034] This section is based on Figure 2-5The working process described in section 9 is as follows: an arc-shaped frame 104 is fixedly connected to the right side of the flow frame 103 by welding. Multiple guide columns 301 are uniformly rotatably connected to the arc-shaped frame 104 along the circumferential direction. The middle part of each guide column 301 is uniformly in contact with the upper side of the inside of the filter ring 201. This facilitates the rotation limit of the filter ring 201 by multiple guide columns 301 when the filter ring 201 rotates, and further maintains the stability of the rotating filter ring 201.

[0035] This section is based on Figure 2-5 The working process described in section 9 is as follows: When the filter ring 201 rotates continuously, multiple teeth are provided on the right side of the outer side of the filter ring 201. A rotating rod 202 is rotatably connected to the rear side of the flow frame 103. A gear 203 is fixedly connected to the middle of the rotating rod 202 by bolts. The gear 203 meshes with the teeth on the filter ring 201 for transmission. The left side of the rotating rod 202 is fixedly connected to the output shaft of the second motor through a coupling. The second motor is fixedly connected to the rear side of the flow frame 103 by bolts. When the second motor is driven, the rotating rod 202 rotates, which in turn drives the gear 203 to rotate synchronously. This causes the gear 203 to mesh with the teeth on the filter ring 201 for transmission, further enabling the filter ring 201 to rotate continuously, which facilitates the screening of polyolefin particles in batches.

[0036] The bottom of the flow frame 103 is fixedly connected to an inclined diversion frame 105. Multiple diversion plates are evenly arranged on the front and rear sides of the diversion frame 105, and the multiple diversion plates on both sides are mirror images of each other.

[0037] This section is based on Figure 2-5 The working process described in section 9 is as follows: To facilitate the dispersed flow of polyolefin particles from the flow frame 103, which helps them to spread evenly on the packaging bag and thus allows staff to observe the quality of the batch of polyolefin, during use, the bottom of the flow frame 103 is fixedly connected to an inclined diversion frame 105 by bolts. Multiple diversion plates are evenly arranged on the front and rear sides of the diversion frame 105, and the multiple diversion plates on both sides are mirror-arranged. When the polyolefin particles are flowing, the multiple diversion plates evenly distributed on both sides facilitate the dispersed flow of polyolefin particles from the flow frame 103, which helps them to spread evenly on the packaging bag and thus allows staff to observe the quality of the batch of polyolefin. The structure is simple and easy to use.

[0038] A right-angle frame 401 is slidably connected to the right side of the flow frame 103, and a storage tube 402 is rotatably connected to the left rear side of the right-angle frame 401.

[0039] This section is based on Figure 2-7The working process described in section 9 is as follows: In order to facilitate the application of fragrance powder to the surface of polyolefin particles by rotating the filter ring 201 when filtering polyolefin particles, during use, the right-angle frame 401 slides down and drives the storage tube 402 connected to one side of the right-angle frame 401 to fit against the inner side of the filter ring 201. As a result, the fragrance powder located in the storage tube 402 intermittently falls into the inner surface of the filter ring 201, so that the filter ring 201 can apply fragrance powder to the surface of polyolefin particles by rotating the filter ring 201 when filtering polyolefin particles, so that the surface of the polyolefin particles has fragrance.

[0040] The storage tube 402 has multiple through holes evenly distributed along the circumferential direction on its left side.

[0041] This section is based on Figure 2-7 The working process described in 9 is as follows: when the fragrance powder in the storage tube 402 intermittently falls onto the inner surface of the filter ring 201, multiple through holes are uniformly provided along the circumferential direction on the left side of the storage tube 402. Then, when the storage tube 402 is in contact with the inner surface of the filter ring 201 and the filter ring 201 is rotating, the fragrance powder in the storage tube 402 intermittently falls onto the inner surface of the filter ring 201, thereby further maintaining the amount of fragrance powder in the storage tube 402.

[0042] A pressing corner 502 is slidably connected to each of the four corners of the bottom of the placement rack 101. The outer sides of the four pressing corners 502 are fixedly connected to the four inner corners of the square frame 501. The rear side of the square frame 501 is fixedly connected to the movable end of the electric push rod 503. The fixed end of the electric push rod 503 is fixedly connected to the rear bottom of the placement rack 101.

[0043] This section is based on Figure 2-9 The working process described is as follows: When packaging the polyolefin granules flowing out of the flow frame 103, in order to stabilize the packaging bag, the electric push rod 503 is driven, so that the square frame 501 located on the movable end of the electric push rod 503 moves downward, causing the pressing angles 502 located at the four corners of the square frame 501 to press the four corners of the packaging bag. Then, the polyolefin granules flowing out of the flow frame 103 are diverted and spread out. After observing the quality of the granules, the polyolefin granules can be directly packaged.

[0044] The polyolefin composition prepared by the above process is composed of the following raw materials in parts by weight: 48 parts polyolefin resin, 50 parts ethylene-vinyl alcohol random copolymer, 48 parts polypropylene, 34 parts flame retardant synergist, and 9 parts charring agent.

Claims

1. A process for preparing a polyolefin composition, characterized in that, The process includes the following steps: S1: The formed polyolefin particles are fed into the preparation device. S2: The particles are filtered and passed through the preparation device; S3: The filtered particles are evenly distributed and spread out using a preparation device for bagging. S4: Press the packaging bag for packaging the granules using the preparation device; S5: While the particles are being filtered and flowed through S2, fragrance powder is intermittently applied to their surface.

2. The process according to claim 1, characterized in that: The preparation device includes a placement frame (101) and a lead screw (102) rotatably connected to the rear side of the placement frame (101). The front side of the placement frame (101) is slidably connected to the front side of a flow frame (103). The rear side of the flow frame (103) is drivenly connected to the lead screw (102). A filter ring (201) is slidably connected to the upper side of the flow frame (103).

3. The process according to claim 2, characterized in that: The filter ring (201) has multiple small holes evenly distributed along the circumference.

4. The process according to claim 2, characterized in that: An arc-shaped frame (104) is fixedly connected to the right side of the flow frame (103). Multiple guide columns (301) are uniformly rotated and connected to the arc-shaped frame (104) along the circumferential direction. The middle part of each guide column (301) is uniformly in contact with the upper side inside the filter ring (201).

5. The process according to claim 2, characterized in that: The right side of the outer side of the filter ring (201) is provided with multiple teeth. The rear side of the flow frame (103) is rotatably connected to a rotating rod (202). A gear (203) is fixedly connected to the middle of the rotating rod (202). The gear (203) meshes with the teeth on the filter ring (201) for transmission.

6. The process according to claim 5, characterized in that: The bottom of the flow frame (103) is fixedly connected to an inclined diversion frame (105), and multiple diversion plates are evenly provided on the front and rear sides of the diversion frame (105), with the multiple diversion plates on both sides being mirror images of each other.

7. The process according to claim 6, characterized in that: A right-angle frame (401) is slidably connected to the right side of the flow frame (103), and a storage tube (402) is rotatably connected to the left rear side of the right-angle frame (401).

8. The process according to claim 7, characterized in that: The storage tube (402) has multiple through holes evenly distributed along the circumferential direction on its left side.

9. The process according to claim 2, characterized in that: At the bottom four corners of the placement rack (101), a pressing corner (502) is slidably connected. The outer sides of the four pressing corners (502) are fixedly connected to the inner four corners of the square frame (501). The rear side of the square frame (501) is fixedly connected to the movable end of the electric push rod (503). The fixed end of the electric push rod (503) is fixedly connected to the bottom rear side of the placement rack (101).

10. The polyolefin composition prepared by the process according to any one of claims 1-9, characterized in that, The polyolefin composition is composed of the following raw materials in parts by weight: 40-48 parts of polyolefin resin, 35-50 parts of ethylene-vinyl alcohol random copolymer, 25-48 parts of polypropylene, 32-34 parts of flame retardant synergist, and 8-9 parts of charring agent.

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