JPS60151028A - Glass fiber reinforced pultrusion article with metallic piece fixed between pultrusion process - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Background of the Invention Pultrusion is a continuous forming process and is well known. Glass fiber reinforcement of polyester and other thermoset resin materials is commonly utilized in pultrusion. Pultrusion involves stretching the reinforcing material in a resin bath in which the reinforcing material is impregnated with a liquid thermosetting resin. As for this Kugetsuji,
There are epoxy, acrylic, polyester, etc.

The fiber laminate is an uncured body formed into a specific shape and drawn in a heated die. After that, the resin is 200~
The shape of the pultruded product is determined by exposing it to a high temperature of 300°C (several hundred degrees Fahrenheit).

Pultrusions have many advantages. It generally has sufficient strength for use as a structural member, is lighter than similar metal members, and is generally less expensive to manufacture. An example of an application of pultrusion is columns supporting the side panels of luggage cars and trailers.

For example, the pultrusion may be an elongated member with a "Z"-shaped cross section designed for use as a side vertical column in a trailer. Side panels are riveted to the column to form the side walls. Conventionally, There were problems with riveting the side panels to the pultruded columns.

One problem is that after the rivet is inserted into the side panel and post holes, the rivet swage action applied to the rivet handle and the rivet swage area create significant forces against the glass fiber surface. . .

This weakens the glass fibers and causes localized damage just below the rivet swage. Since the pull-out portions that contact the side panels form the primary load-bearing area, it is important to minimize the potential for damage due to rivet swaging.

Patents exist that disclose the use of various plastics in combination with various metals. For example, U.S. Patent No. 3
, 746,388 discloses an aluminum coating separated by a glass fiber material and a foam element. US Patent No. 3
, 502,541 discloses a laminate of solution coated aluminum foil and polypropylene film. US Pat. No. 4,382,626 discloses a shaped glass reinforcement blank used to screw steel sheets to SMC panels. None of these patents suggest the production of pultruded articles in which aluminum is embedded and secured to a glass fiber substrate during the manufacturing process.

OBJECTS OF THE INVENTION It is an object of the present invention to provide an improved pultruded article.

Another object of the invention is to provide an improved pultrusion which can accept rivets, etc. without weakening the pultrusion parts.

Structure of the Invention In the present invention, a pultruded product is formed by stretching a glass fiber reinforcement material in a resin bath, molding and heating the formed portion, and curing the portion at a high temperature. The metal material is added to the pultrusion after the resin bath and before curing. The metal material forms part of the final pultrusion and facilitates riveting other parts to the pultrusion.

Other objects and advantages of the invention will become apparent and will be apparent from the following description and the appended claims, taken in conjunction with the accompanying drawings.

DESCRIPTION OF THE EMBODIMENTS Referring to Figures 1, 2 and \, the trailer box has side walls 16.
has. A column 20 is spaced apart and coupled between a roof rail 22 and a floor rail 24.

“A plurality of metal sheets 26 are attached to the pillar 2 by rivets 28.
It is attached to 0. Each of the pillars 20 is made of a resin material 21 reinforced with glass fibers and a metal strip 30 embedded therein.
It is a pultruded product consisting of. In Komata, embedding does not include wrapping the metal, but refers to a state in which the metal is partially embedded within the pultruded product, but the metal surface that receives the swaging force is exposed.

The pultruded column 20 is made by the process shown in FIG. 4 and described below. Generally, the metal strip 30, which may be aluminum or other suitable metal, is embedded in the resin material prior to curing in pultrusion so that the metal strip and glass fiber reinforced resin are integral. forming the product. The metal strip 30 is placed in the resin while the material is still flexible and before it hardens.

As shown in FIG.
1, a portion of the strip is completely exposed and can therefore receive a swaging portion 34 in the illustrated embodiment. Although swage portion 34 is shown as being flattened, other types of rivets may be used. It should be noted that if the metal strip 30 were completely encapsulated, the swage portion 34 of the rivet 28 would reduce the strength of the portion of the fiberglass reinforcement material that constitutes the primary load-bearing portion of the sidewall of the trailer. sea bream.

FIG. 4 shows the manufacturing process of a pultruded product to which a metal strip is fixed. The glass fiber rovings 36 pass through a resin bath 38 and through a forming die 40 .

A glass fiber mat 42 is also passed through the resin bath 44. The resin-impregnated glass fiber mat 42 passes through a forming die 46 which also receives the resin-impregnated glass fiber roving from the forming die 40. Of course, other types of fiber materials may be used in place of glass fibers.

It is. After being dried by suitable means, the roll 48
Metal strips from resin-impregnated glass fiber rovings 3
6 and resin-impregnated glass fiber mat 42 and passed through a molding die 52.

The metal strip is applied to the two-figure uncured pultrusion and then passed through a curing die 54 before the resin cures. The final pultruded product passes through a cooling chamber 56. The means for tensioning the pultrusion may be a roller;
Alternatively, other tensioning devices may be used. They are not shown but are well known in the art.

Metal strip 30 from roll 48 may be adhered to resin material 21 during the pultrusion process, but in the preferred embodiment is embedded within the resin material as shown in FIG. Embedding, rather than simply gluing the strip to the pultrusion, ensures that the metal strip 30 is held in place within the pultrusion. Also, partially embedding the strips simplifies the final forming die 52, making it easier to form pultruded products.

By incorporating the metal strip into the glass fiber reinforced resin during pultrusion, the support structure can be provided relatively inexpensively and the separate step of bonding the strip to the pultrusion can be eliminated.

Although the present invention has been described with respect to supporting side panels, the columns can be used to support roof panels, floor panels, or any other area requiring columns.

[Brief explanation of the drawing]

FIG. 1 shows an example of the use of a pultruded product having a metal strip secured thereto according to the invention, and is an isometric view with a portion of the side wall of a trailer cut away. FIG. 2 is an enlarged isometric view with a portion of the side wall shown in FIG. 1 cut away. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 shows the main steps of pultrusion forming columns in which metal strips are fixed to a glass fiber reinforced substrate. Explanation of symbols 16... Side wall, 20... Pillar, 22... Roof rail, 24... Floor rail, 26... Metal plate, 28...
rivet, 30... metal strip, 34... swaging portion, 36... glass fiber roving, 38... resin bath, 4
0... Molding die, 42... Glass fiber mat, 4
4... Resin bath, 46... Molding die, 48... Roll, 50... Washing solution, 52... Molding die,
54...Hardening die, 56...Cooling room % allowance a person
The Pad Com Bunny Representative Patent Attorney 1) Osamu Sumi Tokukai Sho G 0-151028 (4)

Claims (1)

[Scope of Claims] (1) A pultruded product having a reinforced resin base and a metal piece fixed to the resin base during the drawing process of the resin base. (2. The pultrusion molded product according to claim 1, wherein the metal piece is a metal strip embedded in the reinforcing resin matrix. (3) Molding process and curing process (4) The pultrusion product according to claim 3, wherein the metal strip is added to the reinforcing resin base prior to the curing step. (5) The pultrusion product according to claim 4, wherein the column structure material is a structural material having two cross-sectional shapes. There it is,
The metal strip is a pultruded piece embedded on the leg in contact with the panel work and arranged to receive fixing means inserted therethrough for fixing the column structure to the flannel. (6 ) A pultruded article according to claim 5, wherein said fixing means is a swage type rivet in physical contact with said metal strip.