Manufacturing method of foam with air holes

A manufacturing method and foam technology, applied in the field of foam gaskets, can solve the problems such as loss of elasticity of shoe gasket 5, no longer recycling, incomplete hole shape, etc.

Inactive Publication Date: 2005-06-01
刘坤钟
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. When the solid needle 6 is used to squeeze and pierce the insole 5, the solid part of the insole 5 will be compacted and the insole 5 will lose its elasticity
[0005] 2. When the hollow needle 7 is used to cut and pierce the insole 5, the waste 502 cut off by the hollow needle 7 cannot be recycled, resulting in waste of materials
[0006] 3. The blank 3 is heated and pressurized by the upper and lower mold bases 1 and 2 to complete foaming and crosslinking. However, when the volume and thickness of the blank 3 are larger

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
  • Manufacturing method of foam with air holes
  • Manufacturing method of foam with air holes
  • Manufacturing method of foam with air holes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] refer to figure 2 , image 3 And Fig. 4, the first preferred embodiment of the manufacturing method of the foamed body with vent hole of the present invention comprises the following steps:

[0024] Step 1: Prepare a first and a second mold unit 10 , 20 . The first and second mold units 10 and 20 each have a first and second mold base 11 and 21, a first and second mold cover 12 and 22 that can be closed or separated from the first and second mold bases 11 and 21 , a first and a second mold cavity 13, 24 can be formed when they are closed to each other. The second mold unit 20 has a plurality of perforating pins 23 fixed on the second mold cover 22-mold top surface 221, and these perforating needles 23 can be extended from the mold top surface 221 to the second mold base 21-mold The bottom surface 211 runs through the second mold cavity 24 , and the bottom surface 211 of the mold is provided with a plurality of concave holes 212 for inserting and positioning the perf...

Embodiment 2

[0039] Another example Figure 6 As shown, the manufacturing method of the second embodiment of the present invention includes the following steps: (A) preparing a first and second mold unit identical to that of the first embodiment. (B) Putting a blank into the first mold unit, the blank only contains a foaming agent. (C) heating and pressurizing the first mold unit, when the billet has reached the reaction temperature and controlling the reaction time, the foaming and crosslinking reactions of the billet are not completely completed. (D) Opening the first mold unit to expand and form an incompletely foamed embryo outside the mold, the volume of the embryo being larger than the first cavity but smaller than the second cavity. (E) Putting the uncooled and solidified primordial body into the second mold unit and piercing it with the perforating needles. (F) heating and pressurizing the second mold unit, and making the embryonic body continue to complete foaming and crosslinki...

Embodiment 3

[0041] another example Figure 7 As shown, the manufacturing method of the third embodiment of the present invention includes the following steps: (A) preparing a mold unit, the mold unit has a plurality of piercing needles inside. (B) Putting an unfoamed billet (which can be solid raw meal or melted liquid raw meal) into the mold unit and pierced by the perforating needles. (C) heating and pressurizing the mold unit, and making the billet complete foaming and crosslinking reactions in the mold. (D) After the foaming and cross-linking reactions of the billet are completed in the mold, the mold unit can be cooled and lowered in temperature. (E) Opening the mold unit to obtain a foam body with a plurality of penetrating air holes. (F) Slicing and cutting the foam. Therefore, it is also possible to make a foam with air holes by using a single mold unit with a plurality of perforating needles.

[0042] It is worth mentioning that the blank material of the present invention is ...

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 making process of foamed body with air permeable holes includes the steps of setting the material to be foamed inside a mold with needles, heating and pressurizing the mold for foaming and cross-linking, cooling the mold and demolding. The foamed body may be further cut to required sizes. Or, the material may be first heated and pressurized inside one first mold to form the initial blank, and then foamed and cross-linked in the second mold with needles to obtain the foamed body with air permeable holes.

Description

technical field [0001] The invention relates to a foam gasket, in particular to a method for manufacturing a foam with air holes which can form a plurality of air holes when the foam is formed. Background technique [0002] Generally, insoles made of polyurethane (PU) will naturally form a large number of pores after molding, so the air permeability is good, but the price of polyurethane is more expensive, which will increase the manufacturing of insoles Cost, on the other hand, when ethylene-vinyl acetate copolymer (EVA) is used as a material, it has the advantage of low cost, but it is not breathable, so holes must be opened to improve its breathability. Such as figure 1 Shown, the manufacturing method of existing a kind of ethylene-vinyl acetate copolymer insole sheet is to prepare an upper mold base 1 and a lower mold base 2 with a mold cavity 201 concavely on the top surface, then, the upper and lower mold bases 1, 2 are closed, and an ethylene-vinyl acetate copolymer...

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): B29C44/08
Inventor 刘坤钟
Owner 刘坤钟
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