Manufacture method of foaming ball

A foamed ball and additive technology, applied in the field of foamed ball preparation, can solve the problems of poor dimensional stability of foamed balls, easy generation of weld lines, deformation of foamed balls, etc.

Inactive Publication Date: 2015-11-18
东莞市协宏塑胶制品科技有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation method of foamed balls mainly uses acrylic resin as raw material, and then adds foaming agent to make them. The foamed balls produced by the existing technology have poor dimensional stability, shrink easily, the bubbles are not uniform enough,

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of preparation method of foam ball, comprises the following steps:

[0022] 1) Injection molding

[0023] Add the acrylic resin and the foaming additive to the injection molding machine, and extrude through the screw; then go through the steps of mold clamping, injection, pressure holding, cooling and mold opening to obtain the foamed ball intermediate of injection molding; the foaming additive is Sulfonyl hydrazide, the weight ratio of sulfonyl hydrazide and acrylic resin is 0.1:1000;

[0024] 2) cooling and foaming

[0025] The foam ball intermediate in step 1 is taken out from the mold, and placed in cooling water to cool the foam to obtain the desired foam ball.

[0026] Specifically, the screw extrusion temperature in step 1 is 160°C, the injection pressure is 40MPa, and the injection speed is 2CM 3 / S, the holding pressure is 50MPa, and the holding time is 5s.

[0027] Specifically, the temperature of the cooling water in step 2 is 30°C.

Embodiment 2

[0029] A kind of preparation method of foam ball, comprises the following steps:

[0030] 1) Injection molding

[0031] Add the acrylic resin and the foaming additive to the injection molding machine, and extrude through the screw; then go through the steps of mold clamping, injection, pressure holding, cooling and mold opening to obtain the foamed ball intermediate of injection molding; the foaming additive is Sulfonyl hydrazide, the weight ratio of sulfonyl hydrazide and acrylic resin is 10:1000;

[0032] 2) cooling and foaming

[0033] The foam ball intermediate in step 1 is taken out from the mold, and placed in cooling water to cool the foam to obtain the desired foam ball.

[0034] Specifically, the screw extrusion temperature in step 1 is 250°C, the injection pressure is 150MPa, and the injection speed is 30CM 3 / S, the holding pressure is 100MPa, and the holding time is 1s.

[0035] Specifically, the temperature of the cooling water in step 2 is 50°C.

Embodiment 3

[0037] A kind of preparation method of foam ball, comprises the following steps:

[0038] 1) Injection molding

[0039] Add the acrylic resin and the foaming additive to the injection molding machine, and extrude through the screw; then go through the steps of mold clamping, injection, pressure holding, cooling and mold opening to obtain the foamed ball intermediate of injection molding; the foaming additive is Sulfonyl hydrazide, the weight ratio of sulfonyl hydrazide and acrylic resin is 5:1000;

[0040] 2) cooling and foaming

[0041] The foam ball intermediate in step 1 is taken out from the mold, and placed in cooling water to cool the foam to obtain the desired foam ball.

[0042] Specifically, the screw extrusion temperature in step 1 is 200°C, the injection pressure is 100MPa, and the injection speed is 20CM 3 / S, the holding pressure is 80MPa, and the holding time is 2s.

[0043] Specifically, the temperature of the cooling water in step 2 is 40°C.

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

No PUM Login to view more

Abstract

The invention relates to the technical field of manufacture methods of foaming balls, in particular to a method for manufacturing a foaming ball from acrylic-based resin. The method comprises the following steps of (1) injection moulding, wherein the acrylic-based resin and a foaming additive are added into an injection moulding machine, and are extruded through a screw rod; and then an injection moulded foaming ball intermediate is obtained through the steps of mould clamping, adhesive injecting, pressure maintaining, cooling and mould opening; (2) cooling and foaming, wherein the foaming ball intermediate obtained in the step 1 is taken out of a mould, and is placed in cooling water for cooling and foaming so as to obtain the required foaming ball; the foaming additive is gasified into a low molecule organic matter in a heating condition, and is decomposed to generate a large amount of gas, so that molten solid acrylic-based resin contains a great number of bubbles; the foaming ball is enabled to enter a forming mould for forming, and then is placed in cooling water for cooling; the surface of the foaming ball is sized rapidly in the cooling water; and waste heat exists in the internal part of the foaming ball intermediate, and the acrylic-based resin in the inner part is subjected to cooling shrinkage so as to extrude the bubbles therein, and uniform and beautiful bubbles are generated.

Description

technical field [0001] The invention relates to the technical field of preparation methods of foam balls, in particular to a method for making foam balls with acrylic resin. Background technique [0002] Bubble balls are widely used in handicrafts, lighting, decoration, crystal crafts, glass products and accessories. They have a bright appearance and can be made into different colors, sizes and shapes. The size and density of bubbles in the bubble balls vary, resulting in different visual Effect. At present, the preparation method of foamed balls mainly uses acrylic resin as raw material, and then adds foaming agent to make them. The foamed balls produced by the existing technology have poor dimensional stability, shrink easily, the bubbles are not uniform enough, and weld lines are easy to occur; once If it shrinks, the foam ball may be deformed and become an unqualified defective product. Therefore, how to ensure that it does not shrink or keep the size of the shrinkage a...

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): B29C69/02B29C44/20B29C44/42B29C44/60B29C45/77B29C45/78
Inventor 黎继忠黎鹏唐秀敏
Owner 东莞市协宏塑胶制品科技有限公司
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