CN114290779A - Composite sheet and suitcase - Google Patents

Abstract

The invention discloses a composite board and a luggage case. Wherein, the decorative layer sets up in base plate layer upside, and the inoxidizing coating sets up in the decorative layer upside. The decorative layer is designed as a porous structure, the whole of which is filled with an adhesive medium. And the decorative layer and the substrate layer and the protective layer are connected through bonding media. According to the composite board disclosed by the invention, the composite board is formed by hot pressing, has excellent impact resistance, can provide ultrahigh-strength impact resistance for a trunk, and can be decorated on the board surface according to requirements. The production process is hot-melt composite production, volatile materials such as adhesives and the like are not used in the composite process, the production working condition is environment-friendly, and the plate is a thermoplastic material and can be recycled.

Description

A composite board and luggage

technical field

The present invention relates to the technical field of composite materials, in particular to a composite board and a luggage case.

Background technique

At present, most of the suitcases on the market are made of PC (Polycarbonate, polycarbonate) or ABS (Acrylonitrilebutadiene Styrene copolymers, acrylonitrile-butadiene-styrene copolymers) materials, which have a certain impact resistance and rigidity, but the impact resistance and Rigidity is not enough to meet various high-strength application scenarios, and the surface decoration of PC or ABS material is single, which cannot provide differentiated options for luggage. In addition, the production of general boards often requires the use of adhesives for bonding, which causes great pollution, poor working environment, and easy to cause formaldehyde residues.

Therefore, there is a need for a composite panel for luggage that at least partially solves the above problems.

SUMMARY OF THE INVENTION

A series of concepts in simplified form have been introduced in the Summary section, which are described in further detail in the Detailed Description section. The Summary of the Invention section of the present invention is not meant to attempt to limit the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

In order to at least partially solve the above problems, the present invention provides a composite board, comprising:

substrate layer;

a decorative layer, which is arranged on the upper side of the substrate layer;

protective layer, the protective layer is arranged on the upper side of the decorative layer;

Wherein, the decoration layer is constructed as a porous structure, the whole decoration layer is filled with an adhesive medium, and the decoration layer and the substrate layer and between the decoration layer and the protective layer are connected by the adhesive medium.

Optionally, the substrate layer comprises a stack of at least two layers of continuous fiber reinforced thermoplastic composite sheets.

Optionally, the at least two layers of continuous fiber-reinforced thermoplastic composite sheets comprise a first sheet and a second sheet, wherein the extending direction of the continuous fibers in the first sheet is different from the extending direction of the continuous fibers in the second sheet.

Optionally, the substrate layer is selected from one of the following arrangements:

at least two first sheets stacked;

In a top-to-bottom direction, the first sheet and the second sheet are alternately stacked;

The substrate layer includes at least one stacking unit, and the stacking unit is arranged in the order of first sheet-second sheet-second sheet-first sheet from top to bottom.

Optionally, the extending direction of the continuous fibers in the first sheet is perpendicular to the extending direction of the continuous fibers in the second sheet.

Optionally, the protective layer is constructed as an integrally formed double-layer structure, the protective layer includes a scratch-resistant layer and a connection layer, the scratch-resistant layer is located on the upper side of the connection layer, and the connection layer is used to form a connection with the adhesive medium, the The connection layer is selected from a material that is completely or partially compatible with the adhesive medium.

Optionally, the fibers in the substrate layer and/or the decorative layer are selected from glass fibers, carbon fibers, basalt fibers and aramid fibers.

Optionally, the composite panel is formed by hot pressing.

Optionally, the adhesive medium exists independently as a medium layer between the decorative layer and the protective layer before hot pressing, and is immersed in the decorative layer during hot pressing.

The composite board according to the present invention is formed by hot pressing, has excellent impact resistance, can provide ultra-high-strength impact performance for luggage, and the board surface can be decorated in various ways according to requirements. The production process is hot-melt composite production. There are no volatile materials such as adhesives in the composite process. The production conditions are environmentally friendly, and the board is a thermoplastic material that can be recycled.

According to a second aspect of the present invention, there is provided a luggage case comprising the above-mentioned composite panel.

According to the luggage case of the present invention, similar technical effects to those of the composite board described in the first aspect can be achieved.

Description of drawings

The following drawings of the present invention are incorporated herein as a part of the present invention for understanding of the present invention. The accompanying drawings illustrate embodiments of the present invention and their description, which serve to explain the principles of the present invention.

In the attached picture:

FIG. 1 is a schematic structural diagram of a composite panel according to a preferred embodiment of the present invention.

Description of reference numbers:

110: Substrate layer

111: First sheet

112: Second sheet

120: Decorative layer

130: Protective Layer

140: Adhesive dielectric layer

Detailed ways

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other instances, some technical features known in the art have not been described in order to avoid obscuring the present invention.

For a thorough understanding of the present invention, a detailed description will be set forth in the following description. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments in accordance with the present invention. As used herein, the singular forms are also intended to include the plural forms unless the context clearly dictates otherwise. Furthermore, it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, it indicates the presence of features, integers, steps, operations, elements and/or components, but does not preclude the presence or addition of a or multiple other features, integers, steps, operations, elements, components and/or combinations thereof.

Ordinal numbers such as "first" and "second" referenced in the present invention are merely identifications, and do not have any other meanings, such as a specific order and the like. Also, for example, the term "first element" does not by itself imply the presence of a "second element," nor does the term "second element" by itself imply the presence of a "first element."

It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and similar expressions used herein are for illustrative purposes only , not a restriction.

Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

Referring to FIG. 1 , the present invention provides a composite board 100 for luggage, which includes a substrate layer 110 , a decorative layer 120 and a protective layer 130 . The decoration layer 120 is arranged on the upper side of the substrate layer 110 , and the protective layer 130 is arranged on the upper side of the decoration layer 120 . The decoration layer 120 is constructed as a porous structure, the whole of which is filled with an adhesive medium. In addition, the decorative layer 120 and the substrate layer 110 and the decorative layer 120 and the protective layer 130 are connected by an adhesive medium.

In other words, the finished composite board 100 is roughly composed of three-layer structures, and an adhesive medium is permeated between the three-layer structures, thereby realizing the connection of the three-layer structures as a whole.

In a preferred embodiment, the composite panel 100 is made by hot pressing. The following parameters can be adopted for the hot pressing compounding process: the temperature is 180-220°C, the speed is 16m/min, and the pressure of the pressing roller is 2-6bar.

Before hot pressing, in addition to the above three-layer structure, the adhesive medium exists in the form of an adhesive medium layer 140 . That is, the composite board 100 has a four-layer structure before hot pressing. The adhesive medium layer 140 exists between the decoration layer 120 and the protective layer 130 .

During the hot pressing process, the adhesive medium layer 140 is melted and dipped into the decoration layer 120 , so that the decoration layer 120 is entirely filled with the adhesive medium. Exemplarily, the adhesive medium layer 140 may be a transparent or thermoplastic material with certain transparency, such as a polyolefin film. The decorative layer 120 can be selected from decorative materials with voids, so as to provide texture and facilitate sufficient infiltration of the thermoplastic resin. For example, fiber mats such as glass fiber mats, basalt mats, and carbon fiber mats, or fiber mats such as linen, gauze, and carbon fabrics. Preferably, the decorative layer 120 is made of glass fiber mat.

In addition, the decorative layer 120 and the substrate layer 110 and the decorative layer 120 and the protective layer 130 are connected by an adhesive medium. In the final finished composite panel 100, the separate adhesive medium layer 140 does not appear. As a result, the overall bonding of the plates can be achieved without using a special adhesive, and the process is simple and more environmentally friendly.

In detail, please refer to the lower part of FIG. 1 , in order to ensure the rigidity of the composite panel 100 , the substrate layer 110 includes at least two layers of continuous fiber-reinforced thermoplastic composite sheets stacked. The continuous fiber-reinforced thermoplastic composite sheet may be a prepreg sheet formed by impregnating fiber tapes with a thermoplastic matrix material. The above-mentioned matrix material may be one or more of thermoplastic resins such as polypropylene, polyethylene and nylon. During the hot pressing process, the base material of the above-mentioned substrate layer 110 will also melt, so as to be fully or partially compatible with the melted adhesive medium to form an integral connection.

In addition, the adhesive medium is preferably a material that is fully or partially compatible with the thermoplastic resin constituting the substrate layer 110 .

In an optional embodiment, the matrix material may be composed of a host resin, a modification assistant, and the like. The main resin is polyolefin resin, and the content in the matrix material is 85%. Modification assistants include one or more combinations of functional additives such as toughening masterbatches, compatibilizers, antioxidants, slip agents, UV stabilizers, and glass microbeads. The content of modification assistant is 15%. Among them, the content of toughening masterbatch is 5 parts (5%), the content of compatibilizer is 5 parts (5%), the content of antioxidant is 2 parts (2%), and the content of slip agent is 1 part (1%), the content of UV stabilizer is 1 part (1%), and the content of glass microbeads is 1 part (1%).

The at least two layers of continuous fiber-reinforced thermoplastic composite sheets include a first sheet 111 and a second sheet 112, wherein the extending direction of the continuous fibers in the first sheet 111 and the extending direction of the continuous fibers in the second sheet 112 are different. Preferably, the extending direction of the continuous fibers in the first sheet 111 and the extending direction of the continuous fibers in the second sheet 112 may be 90 degrees, or may be set to any other angle as required.

During production, the interlayer mechanical structure can be designed and adjusted according to the load-bearing mechanical requirements of the luggage, such as strength requirements, mechanical force direction requirements, etc. Exemplarily, the arrangement form of the substrate layer may be that at least two first sheets 111 are stacked, that is, sheets with the same extending direction of the continuous fibers are selected. The arrangement form of the substrate layer can also be that the first sheet 111 and the second sheet 112 are alternately stacked in the top-to-bottom direction, that is, sheets with different extending directions of continuous fibers in each layer are selected for stacking, for example 0/90/0/90 arrangement. The arrangement form of the substrate layer may also include at least one of the following stacking units, and the arrangement form of the stacking units from top to bottom is the first sheet - the second sheet - the second sheet - the first sheet , when the extending direction of the continuous fibers of the first sheet 111 is perpendicular to the extending direction of the continuous fibers of the second sheet 112 , the arrangement is 0/90/90/0.

Looking in detail at the top of FIG. 1 , the protective layer 130 is constructed as an integrally formed two-layer structure (not shown). Specifically, the protective layer 130 includes a scratch-resistant layer (not shown) and a connection layer (not shown). The scratch-resistant layer is located on the upper side of the connecting layer, and the connecting layer is used to form a connection with the adhesive medium. The two can be integrally formed by co-extrusion.

Preferably, the connection layer is made of a material that is completely or partially compatible with the adhesive medium. Alternatively, the connection layer is selected from the same composition material as the base material of the bonding medium or the substrate layer 110 . As an example, the protective layer 130 is a transparent or translucent co-extruded film, one side of the film has scratch resistance and scratch resistance properties, and the other side is a polyolefin modified layer.

Preferably, the fibers in the substrate layer 110 and/or the decoration layer 120 are selected from glass fibers, carbon fibers, basalt fibers and aramid fibers. For example, the fibers in the substrate layer 110 and/or the decoration layer 120 can be selected from glass fibers, the linear density of the glass fibers is 1200 tex, and the content is 60%.

According to the composite board 100 of the present invention, it has excellent impact resistance, can provide ultra-high-strength impact performance for luggage, and the board surface can be decorated in various ways according to requirements. The production process is hot-melt composite production, and there are no volatile materials such as adhesives in the composite process. The production conditions are environmentally friendly, and the board is a thermoplastic material that can be recycled.

Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used herein is for the purpose of describing a particular implementation only and is not intended to limit the present invention. A feature described herein in one embodiment may be used in another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or stated otherwise.

The present invention has been described by the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of illustration and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, those skilled in the art can understand that the present invention is not limited to the above-mentioned embodiments, and more variations and modifications can also be made according to the teachings of the present invention, and these variations and modifications all fall within the protection claimed in the present invention. within the range. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A composite board for luggage, wherein the composite board comprises: substrate layer; a decoration layer, the decoration layer is arranged on the upper side of the substrate layer; a protective layer, the protective layer is arranged on the upper side of the decorative layer; Wherein, the decoration layer is structured as a porous structure, the whole decoration layer is filled with an adhesive medium, and the decoration layer and the substrate layer and between the decoration layer and the protective layer pass through the The adhesive medium connection. 2. The composite panel of claim 1, wherein the substrate layer comprises a stack of at least two layers of continuous fiber-reinforced thermoplastic composite sheets. 3. The composite panel of claim 2, wherein the at least two layers of continuous fiber-reinforced thermoplastic composite sheets comprise a first sheet and a second sheet, wherein the continuous fibers in the first sheet are The direction of extension and the direction of extension of the continuous fibers in the second sheet are different. 4. The composite board according to claim 3, wherein the substrate layer is selected from one of the following arrangements: at least two of said first sheets are stacked; along the top-to-bottom direction, the first sheet material and the second sheet material are alternately stacked; The substrate layer includes at least one stacking unit, and the stacking unit is arranged in the order of first sheet-second sheet-second sheet-first sheet from top to bottom. 5. The composite panel according to claim 3, wherein the extending direction of the continuous fibers in the first sheet is perpendicular to the extending direction of the continuous fibers in the second sheet. 6 . The composite board according to claim 1 , wherein the protective layer is constructed as an integrally formed double-layer structure, the protective layer comprises a scratch-resistant layer and a connecting layer, and the scratch-resistant layer is located on the On the upper side of the connection layer, the connection layer is used to form a connection with the adhesive medium, and the connection layer is selected from a material that is completely or partially compatible with the adhesive medium. 7 . The composite board according to claim 1 , wherein the fibers in the substrate layer and/or the decorative layer are selected from one of glass fibers, carbon fibers, basalt fibers and aramid fibers. 8 . 8 . The composite board according to claim 1 , wherein the composite board is formed by hot pressing. 9 . 9 . The composite board according to claim 8 , wherein the adhesive medium exists independently as a medium layer between the decoration layer and the protective layer before hot pressing, and is immersed in the hot pressing process. 10 . in the decorative layer. 10. A luggage case, characterized in that it comprises the composite board according to any one of claims 1-9.

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