CN104118124B - Fiber composite products with thickness variation - Google Patents

Abstract

A fiber composite product with thickness variation comprises: a resin portion, at least one substrate layer, and at least one thickening layer, wherein the resin portion comprises a first surface, a second surface, a main structural region adjacent to the first surface, and a thickening region between the main structural region and the second surface. The substrate layer and the thickening layer are both made of fiber material and are coated in the resin portion, wherein the substrate layer corresponds to the main structural region of the resin portion, and the area of the thickening layer is smaller than that of the substrate layer and corresponds to the thickening region of the resin portion. The thickening layer is used to generate a thickness variation between the first surface and the second surface of the resin portion, so that lines with depth variation can be easily formed on the first surface and the second surface of the resin portion.

Description

Fiber composite products with thickness variation

technical field

The invention relates to a fiber composite product, in particular to a fiber composite product with fiber as the main material and a multi-layer structure with variable thickness.

Background technique

In the past, when fiber composite materials were manufactured, the fibers were usually woven into cloth, and then the cloth was pre-impregnated in a bonding liquid such as epoxy resin. fiber composites. When used, several layers of fiber composite materials can be stacked and glued together according to the requirements of the application occasions to form a thick fiber composite product.

Although fiber composite products can provide the expected hardness and structural strength in the past, it is often necessary to print on the surface of the product such as trademarks, patterns, etc. When it is insufficient, it is quite difficult to emboss the concave and convex lines on the finished product, and the embossed lines are not obvious. If the number of layers of the fiber composite product is large, although the embossed lines can be made more three-dimensional and clear, but in order to form concave-convex lines in local areas, the overall thickness must be increased. Not only the weight after assembly is heavy, but also the manufacturing cost is relatively high.

Contents of the invention

The purpose of the present invention is to provide a fiber composite product with thickness variation, which can improve the three-dimensional effect and definition of the texture with limited weight and cost.

The fiber composite product of the present invention comprises: a resin part, at least one base material layer and at least one thickening layer wrapped in the resin part. The resin portion has a first surface, a second surface, a main structure area adjacent to the first surface, and a thickened area between the main structure area and the second surface. Both the base material layer and the thickening layer are made of fiber materials, wherein the base material layer is correspondingly coated in the main structure area of the resin part, and the area of the thickening layer is smaller than the area of the base material layer , and covered in the thickened area of the resin part.

In the fiber composite product of the present invention, the fiber composite product includes several thickened layers arranged at intervals, and the area of the thickened layer gradually decreases from the side adjacent to the base material layer to the second surface of the resin part.

In the fiber composite product of the present invention, the fiber composite product includes several substrate layers arranged at intervals and having the same area.

In the fiber composite product of the present invention, the resin part is epoxy resin, and the fiber composite product further includes a first film surface layer bonded to one of the first surface and the second surface of the resin part, the first The film skin is made of thermoplastic polyurethane elastomer.

The fiber composite product of the present invention, the fiber composite product further comprises a second film surface layer bonded to the other of the first surface and the second surface of the resin part, the second film surface layer is made of thermoplastic polyurethane elastomer .

In the fiber composite product of the present invention, the fibers of the substrate layer are selected from: carbon fibers, glass fibers, or a combination of the aforementioned materials, and the fibers of the thickened layer are selected from: polyester fibers, polyamide fibers, or the aforementioned combination of materials.

The beneficial effect of the present invention is that: the thickening layer makes the thickness change between the first surface and the second surface of the resin part, and can increase the thickness of the first surface on the first surface while increasing the limited weight and manufacturing cost. Or the three-dimensionality and clarity of the lines on the second surface.

Description of drawings

Fig. 1 is the front view of a first preferred embodiment of fiber composite product of the present invention;

Fig. 2 is a sectional view taken along line II-II in Fig. 1;

Fig. 3 is a three-dimensional exploded view, assisting in explaining the manufacturing process of the first preferred embodiment;

Fig. 4 is a manufacturing flow chart, which is also used to assist in explaining the manufacturing process of the first preferred embodiment;

Fig. 5 is a sectional view similar to Fig. 2, illustrating a second preferred embodiment of the fiber composite product of the present invention.

detailed description

The present invention will be described in detail below with reference to the drawings and embodiments. In the following description, similar elements are denoted by the same numerals.

Referring to Figures 1 and 2, a first preferred embodiment of the fiber composite product 1 of the present invention is suitable for use in various industries, for example, the fiber composite product 1 can be used in shoes, golf bags, electronic products In the manufacture of shells, etc., that is to say, as long as the product needs to have appropriate hardness, and three-dimensional lines such as concave and convex characters and patterns need to be provided in local areas, the fiber composite product 1 of the present invention can be used. In the following description, only the parts of the shoes are used for illustration.

The fiber composite product 1 of this embodiment includes: a resin part 11 composed of epoxy resin, two base material layers 12 with the same area and arranged at intervals to cover the interior of the resin part 11, several areas smaller than the above-mentioned The area of the base material layer 12 covers the thickening layer 13 inside the resin part 11 at intervals, and a first film surface layer 14 and a second film surface layer 15 combined and fixed with the resin part 11 .

The resin part 11 of this embodiment has a first surface 111, a second surface 112 spaced apart from the first surface 111, a main structure region 113 adjacent to the first surface 111, and a Between the second surface 112 and from the main structure region 113 to the second surface 112, the thickened region 114 of the thickened layer 13 is embossed. The second surface 112 has at least one texture 115 opposite to the thickened region 114. In this preferred embodiment, the texture 115 is formed by several protruding regions in the shape of a star, but the texture 15 can also be inner Concave structures, or different graphics or text.

The base material layer 12 in this embodiment is a fabric woven from fibers, which is in the main structure area 113 of the resin part 11. Preferably, the base material layer 12 is selected from fibers with better structural strength. , for example: carbon fiber, glass fiber, or a combination of the aforementioned materials. And described thickening layer 13 is also the cloth that is woven by fiber, preferably, this thickening layer 13 is selected from the relatively low fiber of structural intensity, specific example: polyester (polyester) fiber, polyamide fiber ( Nylon) and other artificial fibers, or a combination of the aforementioned materials. The area of the thickened layer 13 gradually decreases from a side adjacent to the base material layer 12 to the second surface 112 of the resin portion 11 .

In this embodiment, the first film surface layer 14 is bonded to the first surface 111 of the resin part 11 , and the second film surface layer 15 is bonded to the second surface 112 of the resin part 11 . The first film surface layer 14 and the second film surface layer 15 are all made of thermoplastic polyurethane elastomer (thermoplastic urethane elastomer, referred to as TPU), and the first film surface layer 14 and the second film surface layer 15 can not only The resin portion 11 made of resin is firmly combined, and can also be firmly combined with materials such as rubber, polyurethane (PU for short), polyamide fibers, etc. Material selection can improve the bonding strength between the fiber composite product 1 and other items.

Referring to Figures 2, 3, and 4, when the fiber composite product 1 of this embodiment is manufactured, first, according to the needs of properties, a cloth woven from carbon fiber or glass fiber is selected as the base, and the cloth is pre-impregnated in epoxy resin. After the solution is dried, then cut into two pieces of the first prepreg 16 for subsequent use, in addition, select the cloth made of artificial fibers such as polyester fiber or polyamide fiber as the base, and the cloth is pre-impregnated in epoxy resin The solution is then dried, and then cut into several second prepregs 17 with different areas for later use. Next, the first prepreg 16 and the second prepreg 17 are stacked up and down together, and cover the first film surface layer 14 and the second film surface layer 15 to form a combination, and finally the combination The body is placed in a processing mold (not shown in the figure) for hot pressing processing, and the manufacture of the fiber composite product 1 of this embodiment can be completed.

During the hot pressing process, the epoxy resins of the adjacent first prepreg 16 and the second prepreg 17 will combine, and thus form the resin part 11 of this embodiment, and the first prepreg The fabric of the cloth 16 will become the base material layer 12 of this embodiment, and the fabric of the second prepreg 17 will also form the thickened layer 13 of this embodiment. As for the texture 115 of the resin part 11 of this embodiment, then It is the concave-convex inner mold surface corresponding to the processing mold. That is to say, in this embodiment, the resin portion 11 has the main structure region 113 and the thickened region 114 by stacking the thickened layer 13 on the base material layer 12 with a reduced area. Since the thickness of the aforementioned thickened region 114 is relatively increased, the depth of the lines 115 imprinted on the thickened region 114 of the resin part 11 can be increased, so this embodiment can be formed in a local area of the fiber composite product 1 Three-dimensional and clear lines115.

The quantity of base material layer 12 described in this embodiment also can have only one layer, and it is not necessary to have two layers, and the quantity of this thickened layer 13 is also determined according to the change of required thickness, that is, the thickened The number of layers 13 is not limited to that disclosed in the embodiment.

Referring to Fig. 5, the structure of a second preferred embodiment of the fiber composite product 1 of the present invention is similar to that of the first preferred embodiment, the difference is that the resin part 11 has a main structural region 113, and two intervals are arranged The thickened region 114, that is to say, the thickened region 114 of the fiber composite product 1 of the present invention can be set according to the needs of use, and is not limited to a single one.

From the above description, it can be known that the design of the present invention to increase the thickness of the local area of the resin part 11 by using the thickening layer 13 is not only structurally innovative, but also allows the area where the texture 115 is to be formed to be prepared while increasing the limited weight and manufacturing cost. The thickness can be increased to improve the three-dimensionality and clarity of the texture 115 of the fiber composite product 1, so the present invention is clearly a fiber composite product with novel structure and industrial application value.

Claims (4)

1. A fiber composite product with thickness variation, comprising: a resin portion, and at least one substrate layer, the resin portion has a first surface, a second surface, and a main structural region adjacent to the first surface , the substrate layer is covered in the main structure area of the resin part, and is made of fiber material; it is characterized in that: The resin portion also has a thickened region between the main structure region and the second surface, The fiber composite product also includes several thickened layers arranged at intervals and wrapped in the thickened region of the resin part. The thickened layer is made of fiber material and has an area smaller than that of the base material layer. The thickened layer The area of the layer is gradually reduced from the side adjacent to the base material layer to the second surface of the resin part; The resin part is epoxy resin, and the fiber composite product also includes a first film surface layer bonded to one of the first surface and the second surface of the resin part, and the first film surface layer is made of thermoplastic polyurethane elastomer. production; The fiber composite product also includes a second film surface layer bonded to the other of the first surface and the second surface of the resin part, and the second film surface layer is made of thermoplastic polyurethane elastomer. 2 . The fiber composite product with variable thickness according to claim 1 , characterized in that: the fiber composite product comprises several substrate layers arranged at intervals and having the same area. 3. The fiber composite product with variable thickness according to claim 2, characterized in that: the fibers of the substrate layer are selected from: carbon fibers, glass fibers, or a combination of the aforementioned materials, and the fibers of the thickened layer Selected from: polyester fiber, polyamide fiber, or a combination of the aforementioned materials. 4. The fiber composite product with variable thickness according to claim 1, characterized in that: the fibers of the substrate layer are selected from: carbon fibers, glass fibers, or a combination of the aforementioned materials, and the fibers of the thickened layer Selected from: polyester fiber, polyamide fiber, or a combination of the aforementioned materials.