Method for manufacturing a plastic fuel tank with improved creep strength
a technology of creep strength and manufacturing method, which is applied in the field of plastic fuel tank creep strength manufacturing method, can solve the problems of loss of useful tank volume, difficult to accurately position the insert using this technique, and not very economical, and achieve the effect of strengthening the fuel tank, increasing the creep strength, and avoiding loss of useful volum
Active Publication Date: 2016-05-03
PLASTIC OMNIUM ADVANCED INNOVATION & RES SA
View PDF52 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
However, recourse to these straps involves an additional attachment step and is therefore not very economical.
However, it is not easy to position the insert accurately using this technique.
However, this results in a loss of useful tank volume (as a result of the inflection of the said walls at the welding seam).
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 moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020]The term “fuel tank” is intended to denote a sealed tank able to store fuel under diverse and varying environmental and usage conditions. An example of this tank is a tank fitted to motor vehicles.
[0021]The fuel tank produced according to the method according to the invention is made of plastic, that is to say of a material comprising at least one synthetic resin polymer.
[0022]All types of plastic may be suitable. Particularly suitable plastics come from the thermoplastics category.
[0023]The term “thermoplastic” denotes any thermoplastic polymer, including thermoplastic elastomers, as well as blends thereof. The term “polymer” denotes both homopolymers and copolymers (especially binary or ternary copolymers). Examples of such copolymers are, nonlimitingly, random copolymers, linear block copolymers, other block copolymers and graft copolymers.
[0024]Any type of thermoplastic polymer or copolymer whose melting point is below the decomposition temperature is suitable. Synthetic 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
| Property | Measurement | Unit |
|---|---|---|
| temperature | aaaaa | aaaaa |
| external pressure | aaaaa | aaaaa |
| shrinkage | aaaaa | aaaaa |
Login to View More
Abstract
A method for manufacturing a plastic fuel tank including: a) inserting a plastic parison including two distinct parts into an open two-cavity mold; b) inserting a core, bearing at least part of a reinforcing element configured to create a link between the two parison parts, inside the parison; c) pressing the parison firmly against the mold cavities, for example by blowing through the core and / or creating suction behind the cavities; d) fixing the part of the reinforcing element to at least one of the parison parts using the core; e) withdrawing the core; f) closing the mold, bringing its two cavities together to grip the two parison parts around their periphery to weld them together; g) injecting a pressurized fluid into the mold and / or creating a vacuum behind the mold cavities to press the parison firmly against the mold cavities; and h) opening the mold and extracting the tank.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a Continuation application of U.S. application Ser. No. 11 / 721,785, filed Jun. 14, 2007, which is the National Stage of PCT / EP2005 / 056750, filed Dec. 13, 2005, and claims priority under 35 U.S.C. 119 to French Application No. 04.13310, filed Dec. 15, 2004. The entire content of U.S. application Ser. No. 11 / 721,785 is incorporated herein by reference.BACKGROUND[0002]The present invention relates to a method for manufacturing a plastic fuel tank with improved creep strength.[0003]Plastic fuel tanks intended for motor vehicles have to meet specifications that specify maximum permissible amplitudes of deflection on their lower skin. The deflections stated in these specifications usually have to be met during ageing tests in which the tank contains a certain quantity of fuel for a given period of time (typically several weeks) and at temperature (usually 40° C.). The purpose of these specifications is to ensure that vehicle...
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
Login to View More Patent Type & Authority Patents(United States)
IPC IPC(8): B29C49/20B29D22/00B29C49/64B29C51/12B29C51/26B29C31/00B29C65/02B29C65/00B29C49/04B29C49/42B29C65/60B29C49/00B29K23/00B29L31/00B60K15/03B29C49/78B29C51/46
CPCB29D22/003B29C31/008B29C49/20B29C49/64B29C51/12B29C51/267B29C65/028B29C66/53245B29C66/90B29B2911/14326B29C49/04B29C49/4273B29C49/78B29C51/46B29C65/60B29C66/532B29C66/61B29C66/8322B29C2049/0057B29C2049/206B29C2049/2008B29C2049/2013B29C2049/2073B29C2049/2078B29C2049/2086B29C2049/2095B29C2791/001B29C2791/006B29C2791/007B29C2793/0081B29C2949/78025B29C2949/7842B29C2949/78151B29C2949/78277B29C2949/78294B29C2949/78512B29C2949/78663B29C2949/78857B29C2949/78873B29K2023/065B29K2023/086B29L2031/7172B60K15/03177
Inventor CRIEL, BJORNLEONARD, STEPHANEFERRACIN, THIERRYJANNOT, FREDERIC
Owner PLASTIC OMNIUM ADVANCED INNOVATION & RES SA