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A kind of preparation method of eps foam packaging box

A packaging box and foam technology, which is applied in the field of preparation of EPS foam packaging boxes, can solve the problems of not being able to classify beads of different diameters, affecting the foaming effect and foaming ability of beads, and complicated operation of the pre-expansion machine. effect of effect

Active Publication Date: 2020-06-09
壹物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The final density of the number of cells is controlled by the heating temperature and heating time. At present, the pre-expansion process is mainly completed by the pre-expansion machine. The operation of the pre-expansion machine is complicated, and it cannot be accurately weighed when feeding the pre-expansion machine The weight of the beads put into the machine, and the beads of different diameters cannot be sorted before foaming. If beads of different diameters are mixed for pre-foaming, this will affect the foaming effect and foaming ability of the beads

Method used

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  • A kind of preparation method of eps foam packaging box
  • A kind of preparation method of eps foam packaging box
  • A kind of preparation method of eps foam packaging box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] Such as figure 1 , figure 2 and image 3 As shown, the present embodiment provides an EPS mixing device, which includes a device body 110, a feed pipe 111 is arranged above the device body 110, a baffle 112 is arranged inside the device body 110, and the baffle 112 divides the inside of the device body 110 Separated into a first treatment tank 1131 and a second treatment tank 1132, the first treatment tank 1131 is vertically provided with a plurality of support rods 120, and the plurality of support rods 120 are provided with rubber springs 121, and the plurality of support rods 120 An inclined sieve plate 130 is arranged above, and the sieve plate 130 is located below the feed pipe 111 and one end of the sieve plate 130 is aligned with the second treatment tank 1132; an eccentric wheel 150 for vibrating the sieve plate 130 is also provided in the first treatment tank 1131 , the eccentric wheel 150 is pierced with a drive shaft 160, the two ends of the drive shaft 16...

Embodiment 2

[0121] Such as Figure 4 , Figure 5 and Figure 6 As shown, the present embodiment provides an EPS particle feeding device, which includes a device body 110, a feed pipe 111 is provided above the device body 110, a mounting plate 210 is provided above the feed pipe 111, and a user is provided below the mounting plate 210. For the pressure sensor 240 for measuring the pressure, the pressure sensor 240 is installed on the device body 110; the mounting plate 210 is provided with a through hole corresponding to the feed pipe 111 up and down, and the feed hopper 230 is arranged in the through hole, and the feed hopper 230 has a rectangular section, and the top of the feed hopper 230 can be opened and the bottom can be closed. The feed hopper 230 is divided into a left hopper 231a and a right hopper 231b. The lower right edges of the hopper 231b are respectively rotatably connected to the side walls of the through hole.

[0122] Beads can enter the device body 110 from the feed ...

Embodiment 3

[0138] This embodiment provides a method for preparing an EPS foam packaging box, comprising the following steps:

[0139] 1. Control the third motor 250 so that the upper part of the feeding hopper 230 is in an open state, and the lower part of the blocking device 232 is a closed device;

[0140] 2. Keep the pressure sensor 240 in a working state, and make the display that cooperates with the pressure sensor 240 display a weight of 0;

[0141] 3. Add polystyrene beads containing foaming agent from the feed hopper 230, then check the weight from the display, and then increase or decrease the beads to make the weight reach a predetermined value;

[0142] 4. Turn on the first motor 161 to vibrate the sieve plate 130;

[0143] 5. Control the third motor 250 so that the top of the feed hopper 230 is in a closed state, and the bottom of the stopper device 232 is in an open state. At this time, the beads fall from the feed pipe 111 into the device body 110, and the polystyrene bead...

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Abstract

The invention relates to the technical field of plastic production, in particular to a manufacturing method of an EPS foaming package box. The method comprises the following steps that 1, the upper portion of a feeding hopper is in an opening state, and a closed device is arranged below a material blocking device; 2, a displayer matched with a pressure sensor displays the weight to be zero; 3, beads are added, and then the weight is checked from the displayer; 4, a sieving plate vibrates; 5, the upper portion of the feeding hopper is in a closed state, and the lower portion of the material blocking device is in an opening state; 6, a stirring device stirs large beads in a second treatment groove; 7, steam is introduced into a device body through a steam generator, the temperature in the device body is larger than 92 DEG C, and the beads are foamed in the device body; and 8, after being foamed for 10-24 hours, the foamed beads are taken out, then mellowing is carried out, and finally die pressure forming is carried out. According to the manufacturing method, the weight of the beads can be weighed accurately, a feeding pipe can be opened and closed conveniently, and the beads can beseparately stirred and mixed after being screened.

Description

technical field [0001] The invention relates to the technical field of plastic production, in particular to a method for preparing an EPS foam packaging box. Background technique [0002] Polystyrene foam, referred to as EPS, is formed by foaming polystyrene particles, which mainly contain polystyrene, soluble pentane expansion components and fire retardant. During the molding process of EPS, the pentane in polystyrene particles is heated and vaporized, and expands in the particles to form many closed cavities. This uniform closed cavity structure determines that EPS has many characteristics that other materials do not have. [0003] The raw material beads are softened when heated to above 92°C by steam in a continuous or batch pre-expansion machine, and the volume of the blowing agent volatilizes and dissipates slowly expands to the required ratio or gram weight. Stable magnification is the guarantee of fixed molding conditions, and the molding quality can be guaranteed. S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C44/34B29B13/10B29K25/00
CPCB29B13/10B29C44/3415B29C44/3442B29C44/3461B29K2025/06B29L2031/7162
Inventor 甘春勇王谊
Owner 壹物科技股份有限公司