Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for reinforcing a panel and a method for manufacturing a composite panel implementing such a method

A panel and reinforcement element technology, applied in the manufacture of composite sandwich panels, in the field of composite sandwich panels, can solve the problems of increasing manufacturing time and increasing the cost of reinforced products

Pending Publication Date: 2022-02-22
SOC INT POUR LE COMMERCE & LIND +1
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0036] According to the inventors' findings, this method according to US.3030.256 B1, WO2006 / 125562 and EP 3.173.216 A1 requires reinforcement of the panels with fiber reinforcement material of small cross-section in order to minimize disadvantages and thus provide of the reinforcement material (a large amount of fiber reinforcement material relative to the surface of the panel), which has the disadvantage of increasing the manufacturing time and therefore the cost of the reinforced product

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
  • Method for reinforcing a panel and a method for manufacturing a composite panel implementing such a method
  • Method for reinforcing a panel and a method for manufacturing a composite panel implementing such a method
  • Method for reinforcing a panel and a method for manufacturing a composite panel implementing such a method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0223] Example 1 Acrylic core material (PMI) was reinforced by the proposed method according to different core diameters and its pores were lined according to different filling ratios.

[0224] [Table 2]

[0225]

[0226] The different tests were carried out on the same 50 mm thick acrylic foam panels reinforced along nine reinforcement lines and as presented in Table 2 and according to the scheme described below:

[0227] The panel is planar and the drilling axis of the holes and the insertion axis of the reinforcing elements are perpendicular to the plane of the panel.

[0228] According to the reinforcement method according to the present disclosure, each line N°1 to N°9 of Table 2 provides for the insertion of two reinforcement elements (each line). The coil formed at the end of the insertion step d) is cut so as to divide the stiffening element into two lengths which protrude from the panel on both sides

[0229] At each line (N°1 to N°9), the outer diameter of the d...

example 2

[0239] Example 2 Polyurethane (PUR) core material is reinforced by the proposed method according to different core diameters, and its pores are lined according to different filling ratios.

[0240] [table 3]

[0241]

[0242]

[0243] Table 3 shows the results when the panels are closed cell polyurethane foam and according to the same protocol as in Example 1

[0244] By having the same bulk density value ρ 纤维 and ρ 树脂 The formula of example 1 can easily obtain the fiber mass content (%m) contained in the reinforced bridge to the fiber volume content (V 纤维 ) conversion.

example 3

[0245] Example 3 Polyethylene (PE) core material is reinforced by the proposed method according to different core diameters, and its pores are lined according to different filling ratios.

[0246] [Table 4]

[0247]

[0248] Table 4 shows the results when the panels are closed-cell polyethylene foam, and according to the same protocol as in Example 1.

[0249] By having the same bulk density value ρ 纤维 and ρ 树脂 The formula of example 1 can easily obtain the fiber mass content (%m) contained in the reinforced bridge to the fiber volume content (V 纤维 ) conversion.

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
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

A method for reinforcing a panel (P) in the direction of its thickness E, comprising: a step a) of providing an flexible elongate reinforcing element (1) with two longitudinal ends (10, 11) having a length L strictly greater than twice the thickness E of the panel (P), a step b) of positioning and holding said reinforcing element (1) on one side of the panel, termed the insertion side, a step c) of gripping the reinforcing element (1), at its middle, on the insertion side, an insertion step d) in which said reinforcement element, gripped by its middle, is pulled through a bore passing through the panel, by folding the reinforcing element back on itself, and as far as a final position (Pf) in which the two longitudinal ends (10, 11) do or do not extend beyond the bore on the insertion side (Ci), wherein a loop (12) of the reinforcing element does or does not extend beyond the bore on the side of the panel opposite the insertion side.

Description

[0001] The present invention relates to a method for strengthening panels according to their thickness and a method for manufacturing composite panels using this panel strengthening method. technical field [0002] This disclosure relates to the field of fabrication of composite sandwich panels, also known as composite panels. Composite sandwich panels basically consist of three elements, which are superimposed, planar or 3D preformed, depending on their thickness, namely two skins and an interlayer core, which is usually planar or 3D preformed panel shape, tightly bonded to the two skins. In the context of the present disclosure, as non-limiting examples, the core reinforced by inserting one (or more) reinforcing elements may be e.g. polyethylene foam (PE), polyethylene terephthalate (PET) foam , polyurethane (PUR) foam, acrylic foam (PMI), bio-sourced foam and other cellular foam panels, as well as various materials such as, for example, cork. The skin is usually a textile...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/08B29C70/24
CPCB29C70/086B29C70/24B29C70/443B29C70/545B29C70/68B65F1/16B29C2793/0045B29C2793/0027
Inventor 菲利普·马科维奇菲利普·萨杰特克斯阿维埃·考弗雷厄查莱斯·莱斯托夸西里尔·莱内
Owner SOC INT POUR LE COMMERCE & LIND