FR2630086A1 - FIBER REINFORCED PLASTIC CONTAINER - Google Patents

Abstract

The corners of the cover 1 and of the box 5 are reinforced to withstand impacts, by a peripheral bulge of the edges 2, 6 and by a bulge of the corners, by means of a reinforcing insert 10, 10 'preformed in reinforced plastic material by fibers, integrated into the bulge of the edges 2, 6 at least in the area of the corners and, if necessary, by an additional prefabricated tongue reinforcement insert 12, also of fiber-reinforced synthetic material, and integrated into the reinforcement insert 10 prefabricated.

Description

The invention relates to a container made of pLas-

  fiber-reinforced tick, comprising a cover and a box which can be sealed with one another, by means of a peripheral groove in which an elastic seal and a tongue are placed, and in which

  the corners of the lid and the box are reinforced to support

  bear the shocks, in particular by a peripheral bulge

  edges and / or by bulges in the corners.

  Such a container made of plastic reinforced with fibers is known from document EP-PS 92 670. During violent shocks, in particular when falling over a considerable height, there is the risk that the tongue is broken, in particular in the corners and the container ceases to be

  waterproof. The devices enclosed in the container, in particular

  especially humidity sensitive devices, are serious

  exposed when damage to the container is not immediately noticed. To relieve the tongue, it has already been attempted to place pegs in the corner area, between the cover and the box. However, this arrangement necessitates providing an additional place in the zone exposed to shocks, so that an increase, which would not otherwise be necessary, in the cross section of the edges of the cover and of

the box is compulsory.

  In order to avoid the disadvantages mentioned above

  above, the main purpose of the invention is to produce a story

  neur having the highest possible impact resistance with an effective maintenance of the seal between the lid and the box and the smallest possible increase in the cross section of the slices, as well as a reduced weight of

All.

  To achieve this object, the invention provides that a

  reinforced plastic pre-formed reinforcement lining

  forced by fibers is integrated into an edge bulge and / or a corner bulge, at least in the corner area,

  and, optionally, an additional reinforcement lining

  tongue, preformed also in plastic

  reinforced, is integrated into said preformed lining

necessarily.

  Advantageously, a preformed lining of reinforcement

  cement can be provided in each corner, comprising three reinforcement arms each integrated respectively into an edge leading to this corner, oriented at 90 relative to each other, and having a decreasing section away from the corner. Thanks to this arrangement, a great solidity of the corners can be obtained so that a shock can be endured without causing damage, with the preservation of the seal

of the container.

  Particularly advantageously, two of the three reinforcement arms of the reinforcement lining can

  be integrated with the tongue reinforcement trim.

  Preferably, the reinforcement constituted by small

  bres in correspondence with the requirements of the solidity, can be carried out using sheets of fibers, continuous mattresses, scraps of fabric and / or strips of fabric in glass fibers,

  polyamide fibers (Kevlar) and / or carbon fibers.

  If desired, the reinforcement by individual fibers and the various types of fibers can also be used as a mixture to allow optimal adaptation to the needs. With a reinforcement of particularly stiff and dense fibers, for example by the use of carbon fibers, a particularly rigid, very solid and not very flexible container can be obtained whereas by the use of fibers of

  polyamide an elastically flexible container can be obtained.

  Correspondingly, the reinforcing linings can also be made to be more flexible or, if desired, stiffer than the rest of the walls of the container, so that the stress concentrations occurring during violent impacts are kept to a value. as low as possible and that local destruction of the material is prevented for sure with the preservation of the tightness of the container

2630086-

  during all phases of the event.

  To further increase the strength of the container, metal reinforcing pieces made in particular of perforated sheet metal and / or expanded metal can be provided in the reinforcement linings and / or in the linings of

  reinforcement of the tongue so as to provide a solid

  particularly high locality and to prevent localized crack formation, especially in the area

of the tongue.

  As plastic, can be used in relation

  with the requirements for solidity and stability

  chemical lity, unsaturated polyester resin, vinyl ester, acrylic resin and / or polyurethane for the walls of the container, for the reinforcement linings and / or

  for the tongue reinforcement pads, however

  as different plastics, possibly also of different hardness, can be used for the walls of the container, the reinforcing linings and / or the

  Tongue strengthening pads.

  To obtain a tight wall as homogeneous as possible in all areas, the surfaces of the linings

  prefabricated reinforcement and / or reinforcing linings

  cement of the tongue can be treated for the activation of their surface before their integration into the wall of the container, in particular by sandblasting and / or by surface dissolution by means of a solvent, this dissolution being achievable by a physical process or, also, by a chemical process, to guarantee good crosslinking with the plastic of the

container walls.

  To obtain a further increase in the strength of the container, it is possible to also reinforce, at least partially, the walls of the groove, in

  particularly in the corner area, with a reinforcement

necessarily.

  '' Other features and advantages of the invention

  tion will appear on reading the following description of a

  embodiment given by way of illustration and without intention

  limitative tion. Reference will be made to the accompanying drawings in which: - Figure 1 is a sectional view of part of a

  container in the area of the gasket between the cover

  key and box, - Figure 2 is a sectional view along the line

II-II of Figure 1.

  A cover 1 made of plastic reinforced with fibers, shown only partially in the figure

  1, has a peripheral edge reinforcement 2, which carries a lan-

  lookout 3 extending down; this cooperates, in the closed state of the container, with a peripheral groove 4 of a box

  5 which also has a peripheral edge bulge 6. For the étan-

  container sheave, a seal 7 in the form of a seal

  O-ring is arranged in the groove 4; he is put under cons

  dangles when the slices are pressed against each other

  8 and 9 of the cover 1 and of the box 5 and it guarantees the watertight

cheerfulness.

  To obtain an economical way of the container with high impact resistance, the bulge of the edge 2 is reinforced by a reinforcement lining 10, both in the areas of the straight edges and of the corners. Thus, in each corner, the reinforcement lining consists of three reinforcement arms 11, 11 ', 11 ", the reinforcement arms 11' 11" being arranged in the bulge extending parallel to

  the edge 8 and the reinforcing arm 11 being disposed per-

  pendulum to this section in the edge which leads to

  this corner of the cover 1. In a quadrangular container

  laire, four reinforcement linings 10 are therefore integrated into the cover in the area of the wafers 8 and, optionally, four reinforcement linings, not shown, are integrated into the wall of the container on the upper side of the

  lid. The reinforcing linings 10 are prefabricated.

  They are made of plastic reinforced with fibers. For fiber reinforcement, it is possible to use fiber fleeces, continuous mattresses,

  scraps of fabric, strips of fabric, in order of resistance

  growing tance. The sheets may be made of glass fibers, but also, for higher strength, of polyamide fibers and / or carbon fibers for particularly high stresses. As plastic, unsaturated polyester resins are usually used. For higher constraints, vinyl resins, acrylic resins and / or polyurethane can be used, both for the container walls and for the linings

reinforcement 10.

  So that the tongue 3 can withstand stresses

  particularly important, it can be reinforced at

  less in the corner area by, in particular, trim

  prefabricated tongue strengthening structures. Guys-

  reinforcing tongues 12 of the tongue are prefabricated in the same material as mentioned above and are integrated into the reinforcing lining 10 during the prefabrication of

the latter.

  For additional reinforcement of the tongue 3, metal reinforcing pieces 13 can be integrated therein in the corner area. For an intimate connection with the plastic, the metal reinforcing parts can be formed by a perforated sheet or, also, by expanded metal; a particular strengthening effect can be obtained

  due to the development in space of the expanded metal.

  If an intimate bond of the reinforcing linings

  10 and / or tongue reinforcement pads 12 pre-

  manufactured is desired or necessary, the surfaces of these linings 10, 12 can be specially activated before their integration into the actual walls of the cover I or

  of box 5, for example by sandblasting or by super dissolution

  with a solvent. Such a dissolution can be obtained by a purely physical process but also by a

  chemical process so that the hardened plastic of the gar-

  nitrides 10, 12 binds particularly well with the plastic which still remains to harden during the manufacturing in several stages of the cover 1 and of the box 3, and that the

  chemical crosslinking is done particularly well.

  To increase the solidity of the walls of the groove 4 formed in the bulge 6 of the edge of the box 5, this groove can be associated with a prefabricated reinforcement lining 10 '. During the multi-stage manufacturing of the

  container, the walls must be manufactured and cured appropriately

  ximatively at the same thickness, because a particularly good and regular hardening results in an almost constant resistance of the walls and also, because a particularly good gas tightness, in particular a tightness with water vapor, is obtained, so that fragile objects such as optical devices, electronic devices and spare parts can be kept safely in the container for long periods and can, in the event of

  need, during urgent transport be launched with the container

  neur from vehicles, helicopters or trans planes

Harbor.

Claims (8)

  1. Plastic container reinforced with   fibers, comprising a cover (1) and a box (5) which can   can be closed tightly with each other, thanks to a peripheral rib (4) in which is placed an elastic seal (7) and -a tongue (3), and in which the corners   the cover (1) and the box (5) are reinforced to support   bear shocks, in particular by a peripheral bulge   only edges (2, 6) and / or by a bulge in the corners, charac-   terrified in that a reinforcement lining (10,10 ') prefor-   méée in plastic reinforced by fibers is integrated in the bulge of the edges (2, 6) at least in the zone of the corners   and, if necessary, an additional lining (12) for reinforcing   tongue cement / also prefabricated in plastic   reinforced with fibers, is integrated into the pre-formed lining reinforcement mea (10).   2. Container according to claim 1 characterized in   that a preformed reinforcement lining (10,10 ') is pre-   view in each corner, including three reinforcing arms   (11, 11 ', 11 ") each integrated into an edge respectively   weaving at this corner, arranged at 90 relative to each other,   and having a decreasing section away from the corner.   3. Container according to claim 2 characterized in   that two of the three reinforcing arms (11, 11 ') of the gar-   reinforcement niture (10) include the linings (12) of reinforcement of the tongue.   4. Container according to any one of the claims   1 and 2, characterized in that the reinforcements composed of fibers are made up according to the requirements of the strength, of sheets of fibers, of continuous mattresses, of fabric scraps or of strips of fabric of glass fibers, of polyamide fibers or carbon fiber.   5. Container according to any one of the claims   1 to 4, characterized in that metal reinforcing parts (13) made of perforated sheet and / or expanded metal are provided in the reinforcement linings (10,10 ') and in the linings (12) tongue reinforcement.   6. Container according to any one of the claims.   1 and 2 characterized in that the plastic material used is unsaturated polyester resin, vinyl ester, acrylic resin and polyurethane for the walls of the   container, the reinforcement fittings (10,10 ') and the gar-   tongue reinforcement nitrides (12), these plastic materials   being, if necessary, of a different nature and hardness   different for the container walls, the fittings   forcing (10,10 ') and the linings (12) for reinforcing tabs (12).   7. Container according to any one of the claims.   1 to 6, characterized in that the surfaces of the prefabricated reinforcing linings (10,10 ') or the linings (12)   tongue reinforcement are processed for activation.   before their integration into the container walls, in particular   by sandblasting or by surface dissolution using a sol- glue or glue.   8. Container according to any one of the claims.   tions 1 to 7 characterized in that the walls of the groove (4) are reinforced at least partially, in particular in the   corner area, by a reinforcement lining (10 ').