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Layer made of base plastic comprising barrier plastic nodules

A plastic layer, plastic technology, applied in the direction of plastic recycling, synthetic resin layered products, cellulose plastic material layered products, etc., can solve the problems of limitation, limited level of reuse, poor mechanical properties, etc.

Inactive Publication Date: 2007-03-07
PLASTIC OMNIUM ADVANCED INNOVATION & RES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of multilayer structures, the presence of many different plastics presents problems during recycling: if the situation is limited to grinding them into pellets and reusing them in the manufacture of new articles, there is the danger that the latter (new articles) exhibit poor mechanical properties; therefore, the amount of this recycled material must sometimes be strictly limited depending on the box geometry
[0005] However, the level of re-use of these recycled plastics, and generally recycled plastics, has so far been limited, since they are in fact only used for the middle layer of the article, not least for reasons of mechanical strength of the inner layer and with respect to the outer layer. For aesthetic reasons, and to be able to ensure that certain fittings are welded to the tank in a reliable manner

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0060] Manufactured 5 consecutive generations (0, 1, 2, 3 and 4) of P+R1 / A / B / A / R2 / P fuel tanks, of which:

[0061] - P+R1 = inner layer, for generation 0 (where R1 = 0), based on new HDPE (grade, Eltex(R) RSB714); for later generations, containing 46.2% by weight of stream R1 (defined below), Its diluted in 53.8% new HDPE, this layer accounts for 42% of the total structure,

[0062] - A = adhesive layers based on PE-g-MA (Admer L2100) and each layer accounts for 2% by weight of the structure,

[0063] - B = EVOH layer (Eval F101), 2.75% by weight of the structure,

[0064]- R2 = layer based on flow R2 (defined below) and accounting for 40% of the structure's weight,

[0065] - P = outer layer based on new HDPE, which forms the remainder of the structure,

[0066] Manufactured with:

[0067] 1. Extrusion blow molding:

[0068] - A Bekum BAT1000 plant consisting of 6 extruders (one per layer) with a total production capacity of 330kg / h and whose geometrical characteristics ...

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Abstract

Layer made of base plastic comprising, in the dispersed form, nodules with a diameter of less than or equal to 1 micron comprising barrier plastic incompatible with the base plastic; multilayer structure comprising at least one such layer and process for the manufacture of such layers / structures.

Description

field of invention [0001] The invention relates to a layer made of a base plastic comprising spacer plastic spheres and to a multilayer structure comprising at least one such layer. More specifically, the present invention relates to the recycling and reuse of components of multilayer hollow bodies comprising at least one barrier plastic layer and one matrix plastic layer. Background technique [0002] Such multilayer structures are often used in highly diverse industries, for example in the manufacture of packaging materials or fuel tanks. An example of a multilayer fuel tank comprising 5 layers: PE / adhesive / EVOH / adhesive / PE, where PE stands for high density polyethylene and EVOH stands for ethylene-vinyl alcohol copolymer, the binder can be used especially Maleic anhydride grafted polyethylene (PE-g-MA). [0003] During the manufacture of plastics-based articles, especially by extrusion blow molding, large quantities (often more than 40%) of production waste (offcuts) ar...

Claims

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Application Information

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IPC IPC(8): B32B27/08B29B17/00B29B17/02B29B17/04B29C48/07B29C48/08B29C48/18B29C48/21B29C49/00B29C49/04B29C49/22B32B27/14
CPCB29C47/0054B29C47/0019B29C47/0042B32B27/08B29K2023/086Y10T428/1352B29C47/0021B29B2017/0265B29C49/04B29B17/0404B29C49/0005B29C47/06B29L2031/7172B29K2105/26B29C47/065B29B17/0042B29K2105/04B29K2023/065B29B17/02B29C49/22Y02W30/62B29C48/07B29C48/08B29C48/0012B29C48/0017B29C48/18B29C48/21Y02W30/52B32B23/04B32B37/00B32B27/32B32B27/306B32B2272/00B32B1/00
Inventor 尤勒斯-约瑟夫·范沙夫廷根泽格·杜邦芭芭拉·马贝德
Owner PLASTIC OMNIUM ADVANCED INNOVATION & RES SA
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