EPS package foam forming technology

A foam molding and process technology, applied in the field of foam molding process, can solve the problems of products prone to raspberries, all small bumps in appearance, and collapsed appearance of products, avoiding long-term work and handling, avoiding water velocity impact collapse, guaranteeing The effect of appearance finish

Inactive Publication Date: 2019-08-23
江西维力科技有限公司
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then the appearance of the product will also have steam plugs, and the appearance of the product will be unqualified.
2. When the traditional mold is formed, it is directly heated by steam through the steam plug to form the product, so it will appear: when the steam pressure is high, the appearance of the product will appear wrinkles, and when the steam pressure is low, there will be grain drop phenomenon, which does not meet the requirements
3. Cooling and demoulding. When the traditional mold is cooled, the cooling water directly acts on the product through the steam plug, which will cause the appearance of the product to collapse due to the impact of the water speed, and the flatness is not good.
[0004] Moreover, because the heating steam and cooling water are directly applied to the product in the traditional process, it will cause ①, steam leakage during heating is very serious, and the temperature in the workplace is too high in summer, and workers cannot stand it
also waste energy
②. The demoulding process. Since the traditional mold is demolded with water, there will be splashes of water at the moment of mold opening. Workers must wear raincoats

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • EPS package foam forming technology
  • EPS package foam forming technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present invention provides such Figure 1-2 A kind of EPS packaging foam molding process shown, comprises the following steps:

[0029] (1) Selection of raw materials: select ultra-fine foam particle raw materials with a diameter of 0.4~0.6mm;

[0030] (2) Pre-foaming: The raw materials need to be weighed before the pre-foaming work: pour the raw materials into the hopper, and send them into the pre-weighing hopper through the rotating screw. The computer chip detects the feeding amount through the infrared position sensor. When it reaches the upper Within a limited time, the rotating screw stops and the feeding ends. At this time, the stirring motor of the foaming machine is turned on, the warehouse door is closed, and the steam main valve is opened. When the temperature in the barrel reaches 100 degrees, the pre-weighing hopper starts to discharge the material to the weighing pan, and the weighing is obtained. To weigh the exact value, weigh continuously during t...

Embodiment 2

[0037] The present invention provides such Figure 1-2 A kind of EPS packaging foam molding process shown, comprises the following steps:

[0038] (1) Selection of raw materials: select ultra-fine foam particle raw materials with a diameter of 0.4~0.6mm;

[0039] (2) Pre-foaming: The raw materials need to be weighed before the pre-foaming work: pour the raw materials into the hopper, and send them into the pre-weighing hopper through the rotating screw. The computer chip detects the feeding amount through the infrared position sensor. When it reaches the upper Within a limited time, the rotating screw stops and the feeding ends. At this time, the stirring motor of the foaming machine is turned on, the warehouse door is closed, and the steam main valve is opened. When the temperature in the barrel reaches 100 degrees, the pre-weighing hopper starts to discharge the material to the weighing pan, and the weighing is obtained. To weigh the exact value, weigh continuously during t...

Embodiment 3

[0046] The present invention provides such Figure 1-2 A kind of EPS packaging foam molding process shown, comprises the following steps:

[0047] (1) Selection of raw materials: select ultra-fine foam particle raw materials with a diameter of 0.4~0.6mm;

[0048] (2) Pre-foaming: The raw materials need to be weighed before the pre-foaming work: pour the raw materials into the hopper, and send them into the pre-weighing hopper through the rotating screw. The computer chip detects the feeding amount through the infrared position sensor. When it reaches the upper Within a limited time, the rotating screw stops and the feeding ends. At this time, the stirring motor of the foaming machine is turned on, the warehouse door is closed, and the steam main valve is opened. When the temperature in the barrel reaches 100 degrees, the pre-weighing hopper starts to discharge the material to the weighing pan, and the weighing is obtained. To weigh the exact value, weigh continuously during t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses an EPS package foam forming technology. The EPS package foam forming technology comprises the following steps of first, carrying out material selection; second, carrying out pre-foaming; third, carrying out fluidization; fourth, carrying out curing; fifth, carrying out forming; six, carrying out packaging; and seventh, obtaining a finished product. According to the EPS package foam forming technology, a mold designed according to the technology is used for mold forming work, and according to a traditional mold, because of a vapor lock, a vapor lock hole is prone to being blocked when ultrafine raw materials are in use; the smooth finish of the appearance of a product is guaranteed; during demolding work after forming is completed, air blowing and an ejector rod areused in cooperation, a water-free demolding technology without the vapor lock is adopted, at the moment of demolding, air blowing is carried out on a lower mold to enable the product to move towards an upper mold, and after the upper mold is opened to some extent, the product is sent downwards through the ejector rod of a material gun, and a blow-out valve acts at the time to blow the product outof the mold; and in this way, it can be avoided that the surface of the product is poor in flatness because of sinking after being impacted by water with a high-speed, and the process of transferringthe product to a drying room for drying is omitted.

Description

technical field [0001] The invention relates to the field of foam molding technology, in particular to a foam molding technology for EPS packaging. Background technique [0002] Now all domestic companies that use foam trays require that the foam trays for medical blood collection test tubes must have a smooth appearance, no wrinkles, no threshing, no unevenness, high strength, good toughness, no collapse of the product, and high flatness. [0003] For the above requirements, if traditional technology and molds are used, the following situations will occur: 1. Because of the traditional EPS molding mold, the mold cavity is full of steam plugs. Then the appearance of the product will also have steam plugs, and the appearance of the product will be unqualified. 2. When the traditional mold is formed, it is directly heated by steam through the steam plug to form the product. Then it will appear: when the steam pressure is high, the appearance of the product will appear wrinkle...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B29C44/02B29C44/34B29C44/56B29C44/58B29C44/60
CPCB29C44/02B29C44/34B29C44/3426B29C44/3442B29C44/56B29C44/58B29C44/60
Inventor 陈申荣桂小宾毛连荣
Owner 江西维力科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap