PET (Polyethylene Terephthalate) foam material and manufacturing method thereof

Abstract

The invention relates to the field of PET foaming materials, in particular to a PET foaming material and a manufacturing method thereof. The manufacturing method comprises the following steps: S1, selecting PET resin and a foaming agent; s2, melting and mixing the prepared PET resin and foaming agent under a high-temperature condition, and then extruding the PET resin into the vertical pipe from an extruder; s3, the vertical pipe extrudes the PET resin out of the round box, and the round box and the multiple injection pipes on the round box continuously rotate to extrude the PET resin into the position between the two half boxes; and S4, introducing water vapor into the flat box, and spraying the water vapor onto the PET resin through the plurality of air spraying holes to promote the PET resin to foam to form a PET foaming material. The PET foaming material is composed of PET resin and a foaming agent. The foaming material is convenient to shape and demould.

Description

Technical Field

[0001] The invention relates to the field of PET foam materials, and more particularly to a PET foam material and a manufacturing method thereof. Background Art

[0002] PET foam material refers to a lightweight, porous material made from polyethylene terephthalate through a foaming process. PET is a widely used plastic that is widely used in packaging, fiber, bottles and other fields due to its excellent mechanical properties and chemical stability. PET foam material is commonly used for packaging materials: such as cushioning packaging and thermal insulation packaging. Building materials: used for doors and windows, wall insulation, etc. Electronic products: used as protective materials. PET foam material has many excellent properties and is suitable for multiple industries. It is an important engineering material. However, during the manufacturing of PET foam material, it is easy to have poor shaping and demolding, so it is necessary to improve the shaping and demolding process of PET foam material. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a PET foam material and a method for manufacturing the same, which has the beneficial effect of facilitating shaping and demoulding of the foam material.

[0004] A PET foam material manufacturing device comprises a support plate, wherein the upper side of the support plate is provided with a plurality of strip grooves from left to right, and two half boxes are arranged on the left and right sides, and the two half boxes are located on both sides of the support plate.

[0005] Baffles are fixed at the front and rear ends of the middle part of the lower side of the support plate, and the two baffles block the lower sides of the two support plates. Inclined rods are fixed at the left and right ends of the lower side of the support plate, and a blocking protrusion is fixed at the lower end of each inclined rod.

[0006] A bracket is fixed on the lower side of the support plate, a cross rail is fixed on the upper part of the bracket, both left and right ends of the cross rail are slidably connected with slide seats, the slide seats are driven to slide by hydraulic cylinders, and a cam is fixed on the rear side of each half box, and the two cam shafts are rotatably connected to the two slide seats respectively.

[0007] A PET foam material manufacturing device is used to manufacture a PET foam material manufacturing method, comprising the following steps:

[0008] S1: Select PET resin and foaming agent;

[0009] S2: Melting and mixing the prepared PET resin and foaming agent under high temperature conditions, and then extruding the PET resin from the extruder into the vertical pipe;

[0010] S3: The vertical pipe squeezes the PET resin out of the round box, and the round box and the multiple injection pipes thereon rotate continuously to squeeze the PET resin into between the two half boxes;

[0011] S4: passing water vapor into the flat box, and the water vapor is sprayed onto the PET resin through a plurality of air jet holes, so as to promote the foaming of the PET resin to form a PET foam material.

[0012] A PET foam material manufacturing device manufactures a PET foam material, wherein the PET foam material is composed of PET resin and a foaming agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 A schematic diagram of the structure of a PET foam material manufacturing device Figure 1 ;

[0015] Figure 2 A schematic diagram of the structure of a PET foam material manufacturing device Figure 2 ;

[0016] Figure 3 A schematic diagram of the structure of a PET foam material manufacturing device Figure 3 ;

[0017] Figure 4 The structure of the pallet is shown in Figure 1. Figure 1 ;

[0018] Figure 5 The structure of the pallet is shown in Figure 1. Figure 2 ;

[0019] Figure 6 The structure of the pallet is shown in Figure 1. Figure 3 ;

[0020] Figure 7 is a schematic diagram of the structure of the base;

[0021] Figure 8 The structure of the round box Figure 1 ;

[0022] Fig. 9 The structure of the round box Figure 2 ;

[0023] Fig.10 It is a structural schematic diagram of the door frame;

[0024] Fig.11 The structure of the flat box Figure 1 ;

[0025] Fig.12 The structure of the flat box Figure 2 .

[0026] In the figure: support plate 101; baffle 102; half box 103; strip groove 104; inclined rod 105; baffle 106; cross rail 107; convex shaft 108; bracket 109; slide seat 110;

[0027] Base 201; slide rail 202; screw rod 203; vertical column 204; vertical rod 205; horizontal rod 206; vertical rod 207;

[0028] Round box 301; injection tube 302; gear ring 1 303; gear 304; motor base 305; convex plate 306; vertical tube 307; limiting hook 308;

[0029] Door frame 401; middle pole 402; rocker 403; turntable 404; rotating frame 405; side shaft 406; gear ring 2 407; cam 408; lifting rod 409;

[0030] Flat box 501; gas injection pipe 502; L-shaped frame 503; fixing base 504; gas injection hole 505. DETAILED DESCRIPTION

[0031] like Figure 4-6 As shown, this example can achieve the effect of facilitating the shaping and demolding of the foamed material.

[0032] Since the PET foam material manufacturing device includes a support plate 101, a plurality of strip grooves 104 are arranged on the upper side of the support plate 101 from left to right, and two half boxes 103 are arranged on the left and right sides, and the two half boxes 103 are located on both sides of the support plate 101, the PET resin and the foaming agent can be mixed and squeezed into the upper side of the support plate 101, and the two half boxes 103 enclose the PET resin to prevent the PET resin from escaping from the upper side of the support plate 101. The two half boxes 103 limit the volume of the PET resin after foaming, and the two half boxes 103 can be separated from the left and right, thereby facilitating the shaping and demoulding of the foam material. After the foam material is shaped, the plurality of strip grooves 104 make the bottom of the foam material have a plurality of strip protrusions, thereby increasing the friction between the foam material and the contact object, and preventing the foam material from slipping during use.

[0033] like Figure 4-6 As shown, this example can achieve the effect that when the two half boxes 103 are separated to the left and right, the two half boxes 103 slide down obliquely along the two oblique rods 105 respectively.

[0034] Since baffles 102 are welded at the front and rear ends of the middle part of the lower side of the support plate 101, the two baffles 102 are blocked at the lower side of the two support plates 101, and inclined rods 105 are welded at the left and right ends of the lower side of the support plate 101. A blocking protrusion 106 is welded at the lower end of each inclined rod 105. The baffles 102 support the half boxes 103 at the bottom to prevent the half boxes 103 from shaking when they are merged. When the two half boxes 103 are separated to the left and right, the two half boxes 103 slide down diagonally downward along the two inclined rods 105 respectively, and the blocking protrusion 106 limits the maximum distance of the two half boxes 103 when sliding down.

[0035] like Figure 4-6 As shown, this example can achieve the effect that when the two half boxes 103 are separated, the two half boxes 103 slide down obliquely along the two oblique rods 105 respectively.

[0036] Since a bracket 109 is welded to the lower side of the support plate 101, a cross rail 107 is welded to the upper part of the bracket 109, and slide seats 110 are slidably connected to the left and right ends of the cross rail 107, and the slide seats 110 are driven to slide by a hydraulic cylinder, and a convex shaft 108 is welded to the rear side of each half box 103, and the two convex shafts 108 are rotatably connected to the two slide seats 110 respectively, and the two slide seats 110 can slide closer or farther on the cross rail 107, thereby driving the two convex shafts 108 and the two half boxes 103 to move closer or farther from each other. When the two half boxes 103 are separated, the two half boxes 103 slide down obliquely downward along the two inclined rods 105 respectively.

[0037] like Figure 7 As shown, this example can achieve the effect that the up-down, front-back, left-right positions of the horizontal rod 206 can be adjusted at will.

[0038] Since two vertical rods 207 are fixed on the lower side of the support plate 101, both vertical rods 207 are fixed on the base 201, a slide rail 202 is provided at the rear part of the base 201, and a vertical column 204 is slidably connected to the slide rail 202, a motor is fixed on the base 201, and a screw rod 203 is fixed on the output shaft of the motor, and the screw rod 203 cooperates with the vertical column 204 through a thread, and a vertical rod 205 is vertically slidably connected to the vertical column 204, and a flat rod 206 is slidably connected to the upper part of the vertical rod 205 in the front and rear directions. The vertical rod 205 and the flat rod 206 are both driven to slide by a hydraulic cylinder, and the motor drives the screw rod 203 to rotate, thereby driving the vertical column 204 to slide on the slide rail 202, and the vertical rod 205 can slide vertically on the vertical column 204, and the flat rod 206 can slide back and forth on the vertical rod 205, so that the up and down, front and back, left and right positions of the flat rod 206 can be adjusted at will.

[0039] like Figure 8-9 As shown, this example can achieve the effect of evenly laying the material on the upper side of the pallet 101 .

[0040] Since the front part of the flat rod 206 is connected with a vertical pipe 307 by screws, the lower end of the vertical pipe 307 is inserted into the round box 301, and the lower side of the round box 301 is provided with a plurality of injection pipes 302 in a ring shape, the upper side of the round box 301 is connected with a gear ring 1 303, a limiting hook 308 is welded on the vertical pipe 307, a card slot is provided on the limiting hook 308, and the gear ring 1 303 is inserted into the card slot, and the right side of the vertical pipe 307 is connected with a motor seat 305 by screws, and the motor seat 305 is connected with a motor by screws, and the output shaft of the motor is connected with a gear 303. 04, gear 304 meshes with gear ring 1 303 for transmission, and the extruder can be connected from the vertical pipe 307, and the PET resin and the foaming agent are melted and mixed under high temperature conditions and then squeezed into the vertical pipe 307, and then the PET resin enters the round box 301, and the motor drives the gear 304 to rotate, and then drives the gear ring 1 303 and the round box 301 to rotate, and then drives the multiple injection pipes 302 to rotate, and the material is squeezed into the upper side of the support plate 101 from the multiple continuously rotating injection pipes 302, so that the material is evenly laid on the upper side of the support plate 101. The limiting hook 308 can prevent the round box 301 from detaching from the vertical pipe 307.

[0041] like Figure 8-10 As shown, this example can achieve the effect of continuously mixing the materials extruded by the multiple injection tubes 302.

[0042] Since a convex plate 306 is fixed to the right side of the vertical tube 307, a gantry 401 is fixed on the convex plate 306, a lifting rod 409 is vertically slidably connected to the gantry 401, a rocker 403 is hinged at the front of the lifting rod 409, side shafts 406 are fixed to the front and rear sides of the rotating frame 405, the rotating frame 405 is rotatably connected to the lower part of the gantry 401 through the two side shafts 406, a turntable 404 is fixed to the side shaft 406 located on the front side, a rocker 403 is hinged at the eccentric position of the turntable 404, the upper part of the rocker 403 is hinged on the lifting rod 409, the gantry 401 will move with the vertical tube 307, and when the lifting rod 409 slides back and forth vertically, the turntable 404 is driven to rotate through the rocker 403, and then the rotating frame 405 is driven to rotate at the lower side of the gantry 401 through the two side shafts 406, so that the materials squeezed out by the multiple injection pipes 302 are continuously mixed.

[0043] like Fig.10 As shown, this example can achieve the effect of driving the lifting rod 409 to move vertically back and forth.

[0044] Since a compression spring is fixed to the upper side of the lifting rod 409, the upper part of the compression spring is fixed to the upper part of the door frame 401, and a middle rod 402 is fixed to the middle part of the door frame 401, and a cam 408 is rotatably connected to the middle rod 402, and the upper side of the cam 408 is an inclined surface, and the cam 408 is located on the lower side of the lifting rod 409, and a gear ring 2 407 is fixed to the cam 408, and the gear ring 2 407 is meshed with the gear 304 for transmission. When the gear 304 rotates, it will also drive the gear ring 2 407 and the cam 408 to rotate, thereby driving the lifting rod 409 to move upward, and then the lifting rod 409 is pressed downward by the compression spring, thereby driving the lifting rod 409 to reciprocate vertically.

[0045] like Figure 11-12 As shown, this example can achieve the effect of promoting the foaming of PET resin to form PET foam material by uniformly spraying water vapor on the material.

[0046] Since a fixed seat 504 is welded to the front of the base 201, an L-shaped frame 503 is slidably connected to the fixed seat 504 in the front-to-back direction, and the L-shaped frame 503 is driven to slide by a hydraulic cylinder, a flat box 501 is fixed to the upper part of the L-shaped frame 503, an air injection pipe 502 is arranged on the upper side of the flat box 501, and a plurality of air injection holes 505 are evenly distributed on the lower side of the flat box 501. When the PET resin is injected into the upper side of the support plate 101, the L-shaped frame 503 and the flat box 501 are driven to move forward, so that the flat box 501 moves to the upper side of the support plate 101, and water vapor is introduced into the air injection pipe 502, and then the water vapor is ejected from the plurality of air injection holes 505, and the water vapor is evenly sprayed on the material to promote the foaming of the PET resin to form a PET foam material.

[0047] A PET foam material manufacturing device is used to manufacture a PET foam material manufacturing method, characterized in that it includes the following steps:

[0048] S1: Select PET resin and foaming agent;

[0049] S2: Melting and mixing the prepared PET resin and foaming agent under high temperature conditions, and then extruding the PET resin from the extruder into the vertical pipe 307;

[0050] S3: The vertical pipe 307 squeezes the PET resin out of the round box 301, and the round box 301 and the multiple injection pipes 302 thereon rotate continuously to squeeze the PET resin into between the two half boxes 103;

[0051] S4: passing water vapor into the flat box 501, and the water vapor is sprayed onto the PET resin through the plurality of air jet holes 505, so as to promote the foaming of the PET resin to form a PET foam material.

[0052] A PET foam material manufacturing device manufactures a PET foam material, wherein the PET foam material is composed of PET resin and a foaming agent.

Claims

1. A PET foam material manufacturing device, comprising a support plate (101), characterized in that: The upper side of the support plate (101) is provided with a plurality of strip-shaped grooves (104) from left to right, and two half boxes (103) are arranged on the left and right, and the two half boxes (103) are located on both sides of the support plate (101).

2. A PET foam material manufacturing device according to claim 1, characterized in that: Baffles (102) are fixed at both the front and rear ends of the middle of the lower side of the support plate (101), and the two baffles (102) block the lower sides of the two support plates (101). Inclined rods (105) are fixed at both the left and right ends of the lower side of the support plate (101), and a blocking protrusion (106) is fixed at the lower end of each inclined rod (105).

3. A PET foam material manufacturing device according to claim 2, characterized in that: A bracket (109) is fixed on the lower side of the support plate (101), a cross rail (107) is fixed on the upper part of the bracket (109), both left and right ends of the cross rail (107) are slidably connected with a slide seat (110), the slide seat (110) is driven to slide by a hydraulic cylinder, and a convex shaft (108) is fixed on the rear side of each half box (103), and the two convex shafts (108) are rotatably connected to the two slide seats (110) respectively.

4. A PET foam material manufacturing device according to claim 3, characterized in that: Two vertical rods (207) are fixed on the lower side of the support plate (101), and the two vertical rods (207) are fixed on the base (201). A slide rail (202) is arranged at the rear of the base (201), and a vertical column (204) is slidably connected to the slide rail (202). A motor is fixed on the base (201), and a screw rod (203) is fixed on the output shaft of the motor. The screw rod (203) and the vertical column (204) are threadedly matched. A vertical rod (205) is vertically slidably connected to the vertical column (204), and a horizontal rod (206) is slidably connected to the upper part of the vertical rod (205) in the front-rear direction. The vertical rod (205) and the horizontal rod (206) are both driven to slide by a hydraulic cylinder.

5. A PET foam material manufacturing device according to claim 4, characterized in that: A vertical tube (307) is fixed to the front of the flat rod (206), the lower end of the vertical tube (307) is inserted into the round box (301), a plurality of injection tubes (302) are arranged in a ring shape on the lower side of the round box (301), a gear ring (303) is fixed to the upper side of the round box (301), a limiting hook (308) is fixed to the vertical tube (307), a slot is arranged on the limiting hook (308), the gear ring (303) is inserted into the slot, a motor seat (305) is fixed to the right side of the vertical tube (307), a motor is fixed to the motor seat (305), a gear (304) is fixed to the output shaft of the motor, and the gear (304) is meshed with the gear ring (303) for transmission.

6. A PET foam material manufacturing device according to claim 5, characterized in that: A convex plate (306) is fixed to the right side of the vertical tube (307), a door frame (401) is fixed to the convex plate (306), a lifting rod (409) is vertically slidably connected to the door frame (401), a rocker (403) is hinged at the front of the lifting rod (409), side shafts (406) are fixed to the front and rear sides of the rotating frame (405), the rotating frame (405) is rotatably connected to the lower part of the door frame (401) through two side shafts (406), a turntable (404) is fixed to the side shaft (406) located at the front side, a rocker (403) is hinged at an eccentric position of the turntable (404), and the upper part of the rocker (403) is hinged to the lifting rod (409).

7. A PET foam material manufacturing device according to claim 6, characterized in that: A compression spring is fixed on the upper side of the lifting rod (409), the upper part of the compression spring is fixed on the upper part of the door frame (401), a middle rod (402) is fixed on the middle part of the door frame (401), a cam (408) is rotatably connected to the middle rod (402), the upper side of the cam (408) is an inclined surface, the cam (408) is located on the lower side of the lifting rod (409), a second gear ring (407) is fixed on the cam (408), and the second gear ring (407) is meshed with the gear (304) for transmission.

8. A PET foam material manufacturing device according to claim 7, characterized in that: A fixed seat (504) is fixed at the front of the base (201), an L-shaped frame (503) is slidably connected to the fixed seat (504) in the front-rear direction, the L-shaped frame (503) is driven to slide by a hydraulic cylinder, a flat box (501) is fixed at the upper part of the L-shaped frame (503), an air injection pipe (502) is arranged on the upper side of the flat box (501), and a plurality of air injection holes (505) are evenly distributed on the lower side of the flat box (501).

9. A PET foam material manufacturing device according to claim 8, used to manufacture a PET foam material manufacturing method, characterized in that: The following steps are involved: S1: Select PET resin and foaming agent; S2: Melting and mixing the prepared PET resin and foaming agent under high temperature conditions, and then extruding the PET resin from the extruder into the vertical pipe (307); S3: The vertical pipe (307) squeezes the PET resin out of the round box (301), and the round box (301) and the multiple injection pipes (302) thereon continuously rotate to squeeze the PET resin into between the two half boxes (103); S4: passing water vapor into the flat box (501), and the water vapor is sprayed onto the PET resin through a plurality of spray holes (505), thereby promoting the foaming of the PET resin to form a PET foam material.

10. The PET foam material manufacturing device according to claim 8, wherein the manufactured PET foam material is characterized in that: The PET foam material consists of PET resin and a foaming agent.

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