SK28396A3 - Lining parts from fibrous sendwich mats and their manufacturing process - Google Patents

Abstract

Cladding, pref. car interior trim sections (1) are made of fibrous composite mats (2). The mat, which may have a decorative layer (3), is heated and pressed to shape. In the novel process, adjuncts (6,7) are then moulded onto the rear, consisting of e.g. stiffening ribs, holders and fastenings. They are rear-injected or rear-pressed into place, in the same tool. Pref. the press is closed during the addition. In a variation, plastic and composite mat may be applied before closure. In a further method the mat may be shaped by closing the press, plastic then introduced with the dies half open, finally moulding by re-closing the press. Also claimed is the cladding made in similar fashion.

Description

The invention relates to methods. production of storage panels made of fiber sandwich mats, especially for the interior space of pine vehicles, in which the fiber sandwiches are heated accordingly! mat, event. together with the decorative material representing the face side, by molding the fibers on the tile; as well as storage panels made by the process according to the invention.

BACKGROUND OF THE INVENTION

Complex tiles, such as built in. in the interior of motor vehicles, mostly consist of plastics. Recently, a variety of hot-compressible and malleable hot-melt sandwich mats have penetrated the automotive industry, especially natural fiber mats for storage panels. Since such tiles can be recycled without any problems, a high increase of these materials can be expected.

To increase the optical impression and comfort, plastic storage panels are increasingly produced with a textile or otherwise decorated surface. Decorated shelves: they are produced either by the so-called direct or two-step process.

In the two-step process, the artwork is first produced, including any additional construction elements, and for this it is provided with a decor in a separate workflow. The application of decor to an art is generally referred to as laminated. Adhesion between the decor and the article is ensured by different adhesive systems.

Direct procedure means such. in which the decorated storage compartment: is produced in one working step and without the use of adhesives. In this case, the melt of the thermoplastically processable plastic is shaped together with the decorative layer. The most common direct procedures are spraying and rialising. For spraying, the decorative layer is inserted into the injection molding tool and the plastic is applied with the injection molding device closed at the back of the decor. During the coating process, the plastic is applied to the cavity of the tool when the windshield washer is open, for example by means of a slit nozzle, and then pressed together with the decorative layer, the plastic filling the cavity between the two tool halves

For working in the first class. With the use of natural fiber materials, the so-called fiber pressing, a correspondingly heated fiber mat, e.g. Polypropylene and linen fibers (partly multilayered with different fiber fractions), together with the decorative material or decorative layer, form a solid cohesion between the fiber sandwich mat as the base body and the decorative layer as the surface material even without glue. Suitable natural fibers are furthermore e.g. products of hemp, sisal. Jute, pulp and cotton, and wood pulp. The addition of synthetic fibers would also be necessary. Glass or carbon fibers can also be added for tiles with increased strength.

Shaped parts or additional elements, such as e.g. fasteners, clips or even reinforcements must either be adhered to the fiber sandwich mat in the next working step, or they can be pleated as prefabricated metal parts during the forming process. For this purpose, however, the punching tool must be fitted with the appropriate additional parts before each working stroke. Furthermore, the complex additional portions of this prior art are described.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION It is an object of the present invention to improve fibrous sandwich mats as well as the manufacturing process thereof so as to reduce the laboriousness of mounting additional parts to the mininium, while providing additional design and addi tional add-ons. part.

This object is achieved according to the invention in that the additional elements, such as e.g. stiffeners, fasteners, clips, etc. designed for the back side of the cladding panel are molded in the same tool by spraying or pressing thermoplastically processable plastics. This production method is suitable for both decorated and undecorated tiles.

In a first variant of the invention, it is particularly proposed that the additional elements be shaped towards the end or after completion of the molding process of the fibrous sandwich mat with the molding tool closed, at least in the areas intended to form the additional parts by injection molding thermoplastically processable plastic.

Another variant of the invention contemplates. The process according to claim 1, characterized in that the additional elements are formed at the same time during the forming process of the fiber sandwich mat, whereby before the shaping process is started, the thermoplastically workable plastic is applied with at least the areas intended to form the additional elements.

Is a? However, this is also possible. that the latter is known. the fibrous end-layer mat is closed by closing the cladding to the final shape of the cladding,

1. i s o v c: om n o s t i o n i n e s e t; The processable plastic is at least to the areas intended to render the additional parts, and the additional elements are pressed again by recoiling; o v a c i. e h o us t r o Me.

Each of these variants of the process according to the invention yields a lining component consisting of a fiber sandwich mat formed by the pressing of fibers, which is, if appropriate, a fiber composite. provided on the face side with decorative material, wherein according to the invention, additionally shaped portions are arranged at the back of the shaped fiber sandwich mat, which are directly shaped on the back of the fiber sandwich mat by spraying or pressing a thermoplastically workable hair. astov.

To better anchor the additional elements, the backside of the tray can be spray applied or pressed at least around the islet regions of the add-on parts, and these islet regions can form the entire backside of the tray, especially with smaller stackers.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained in more detail below on the basis of:

drawings.

Fig. 1 shows a sectional view of a shelf according to the invention, FIG.

a top view of the back of the shelf according to FIG. 1 and FIG. 3 and specific examples of the use of storage panels for the interior of passenger motor vehicles.

an embodiment of the invention

The shelf 1 shown schematically in FIG. 1 and 2, for example a cover in the luggage compartment trim of a motor vehicle ... is as ... seen in the sectional view of FIG. 1, constructed from a fiber sandwich mat 2 formed by fiber pressing and the decorative layer 3 formed in the same process. However, the face 4 of the fiber sandwich mat may remain partially or completely untrimmed.

At the back 5 of the fiber sandwich mat 2, additional portions 6 and 7 are provided, which are molded on the fiber sandwich mat 2 by applying thermoplastically processable plastics by spraying or pressing. Reference numeral 6 denotes a fastener and a reinforcement 7.

For better connection to the fiber sandwich mat 2, the back side 5 of the tile 1 can be sprayed or pressed around the additional portions 6, 7 at least in the island regions 6'- 7 '. These island regions 67, 7' can cover the whole, especially for small tiles. the back of the fiber sandwich mat 2.

In FIG. 3 and 4 show specific examples of use for such tiles. Fig. 3 shows the inner lining of the B-pillar of a passenger motor vehicle in a three-dimensional embodiment. The fastening elements of the pillar lining are marked with 6.

Fig. 4 is a cross-sectional view of the side compartment cover in the luggage compartment of a passenger motor vehicle, showing the clips 8, for example, to receive: a warning triangle and a first-aid kit. The islet-like areas 8 * cover a large area of the rear side 5 at this side cover.

Claims (6)

Fiber sandwich mat storage panels, consisting of a fiber sandwich fiber sandwich mat which is optionally provided with a decorative layer on the face side, in particular for the interior of motor vehicles, characterized in that on the front side (5) of the molded fiber sandwich mat. The mats (2) are provided with additional parts (6, 7, 8) such as reinforcements, fasteners, threads, etc., which are molded directly on the back (5) of the fibrous sandwich mat (2) by thermoplastic application. processable plastic by spraying or pressing. Cladding panels according to claim 1, characterized in that the rear side (5) of the cladding panel (1) is sprayed or pressed in at least in the islet regions (6 ', 7', 8 '). 3 ‘,. Method for manufacturing storage panels from fiber sandwich mats. in particular for the interior of motor vehicles, in which the fibrous sandwich mat is heated accordingly; together with the decorative material J representing the view side, it forms a panel by pressing the fibers on the tile, characterized in that the additional elements on the back side of the tile, such as e.g. stiffeners, fasteners, clips, etc., are formed in the same tool by spraying or pressing thermoplastically processable plastics. The method of claim 3. S h a t i n i n i s. The process according to claim 1, characterized in that the additive elements at the end or after completion of the forming process of the fibrous sandwich mat are molded with the molding tool closed, at least in the areas intended to form the additional elements by spraying ... thermoplastically processable plastic. Method according to claim 3, characterized in that the additional elements are molded simultaneously during the molding process of the fiber sandwich mat, and are already thermoplastically applied to at least the regions intended for the design of the additional elements before the molding process is started processable plastic and additional elements are formed by pressing. 6. The method according to claim 3, characterized in that The method of claim 1, wherein the fibrous sandwich mat is first formed substantially up to the final shape of the panel by closing the die, that in the semi-open die the thermoplastically workable plastic is applied at least to the regions intended to form the additional elements.