CN1403350A - Composite fiber material, molded packing material with the fiber material and its use - Google Patents

Abstract

The invention relates to the field of packaging materials and provides fiber composite materials with cushioning and load-bearing properties, which are mainly composed of thick fibers and thin fibers through adhesives, wherein the thick fibers are tubular fibers with a length of 3-60 mm, and the thin fibers are 10-60 mm in length. For the purpose fiber powder, the weight ratio of crude fiber to thin fiber is 5-100:10. At the same time, a film-plastic packaging material made of the fiber composite material is provided, which mainly includes a shell layer, a solid layer and a bottom plate layer, wherein the solid layer adopts the fiber composite material with cushioning and load-bearing properties provided by the present invention. This film plastic packaging material is used for the packaging of heavy products. The film-plastic packaging material provided by the invention can utilize a large amount of agricultural waste fibers, so the cost is low, and it is also an environment-friendly material, which can especially meet the demand for packaging materials for heavy-duty export products.

Description

Fiber composite material and molded packaging material using the material and its use

                            

The invention relates to the field of packaging materials, in particular to fiber composite materials with cushioning and load-bearing properties, molded packaging materials made of the composite materials and applications thereof.

technical background

At present, most of the cushioning packaging materials use polystyrene foamed plastics. Because polystyrene foam plastic is difficult to degrade in the natural environment, it forms "white pollution", and the freon (CFC) used in the foam production process destroys the atmospheric ozone layer, seriously affecting the global environment. The use of Styrofoam has been explicitly restricted or banned worldwide. Now there are pulp molded packaging materials on the market as an environmentally friendly product that replaces polystyrene foamed plastics. Its cushioning effect is mainly determined by the hollow shell structure of pulp molded parts, but it bears heavy and severe shocks. Impact strength is poor. Therefore, pulp molded packaging materials can only be used for the packaging of lighter items, such as the packaging of small electrical products and accessories, referred to as "light packaging"; and cannot be used for the packaging of heavier items, such as large electrical products, The packaging of TV sets, computer monitors and washing machines, referred to as "heavy packaging", has no suitable substitutes in the world today.

Contents of Invention

The object of the present invention is to provide an environment-friendly fiber composite material with cushioning and load-bearing properties, which can be used for heavy-duty packaging materials, and can also utilize agricultural waste fibers in large quantities, and is low in cost, degradable, and has social and economic benefits.

Another object of the present invention is to provide a film-plastic packaging material made of the fiber composite material, which can be used as a heavy-duty packaging material and is environmentally friendly and economical.

Another object of the present invention is to provide the use of the film-plastic packaging material made of the fiber composite material.

The fiber composite material with cushioning and load-bearing properties provided by the present invention is mainly composed of thick fibers and thin fibers through an adhesive compound, wherein the thick fibers are tubular fibers with a length of 3-60mm, the thin fibers are fiber powders of 10-60 meshes, and the thick The weight ratio of fiber to fine fiber is 5-100:10.

Among them, the length of the thick fiber is preferably 5-40 mm, and the fine fiber is preferably 20-40 mesh.

The weight ratio of thick fibers to thin fibers is preferably 10 to 60:10.

The adhesive can be a general adhesive, especially an environment-friendly adhesive, such as water-based synthetic glue, starch and its derivatives. The adhesive generally accounts for 2-12% of the total weight of the material.

The film-plastic packaging material made of the fiber composite material mainly includes an outer shell layer, a solid layer and a bottom plate layer, wherein the solid layer adopts the fiber composite material with cushioning and load-bearing properties provided by the present invention.

The shell layer is generally a pulp fiber molding layer, which is a three-dimensional structure of the shell layer designed according to the shape structure and protection requirements of the packaged goods; the solid layer adopts the fiber composite material with cushioning and load-bearing properties provided by the present invention; the bottom plate layer Pulp fiber flat material is generally used.

The thickness of the solid layer can be adjusted arbitrarily, and the fiber composite material of the solid layer is evenly filled in the entire space surrounded by the shell layer and the bottom plate layer.

This film plastic packaging material is used for the packaging of heavy products.

The film plastic packaging material can be formed by secondary molding. According to the specific application of the packaging material, the outer shell layer is molded first, and then the solid layer is molded, and then covered with the bottom plate layer.

The fiber composite material provided by the invention has buffering and load-bearing properties. According to the performance test of the elastic steel ball impact test, the energy absorption of the material is basically similar to that of traditional synthetic materials, indicating that it has a good buffering effect, and the thickness of the solid layer can be It can be adjusted arbitrarily according to the needs to meet the needs of carrying the weight of items.

The fiber composite material with cushioning and load-bearing properties provided by the invention can utilize a large amount of agricultural waste fibers, so the cost is low, and because of the degradability of the fibers, it is also an environmentally friendly material. The film-plastic packaging made of this material The materials can meet the strict international requirements on packaging materials for export products after my country's accession to the WTO, especially to alleviate the demand for heavy-duty material packaging.

The film-plastic packaging material is especially suitable as a "heavy-duty packaging" material, which is specially used for packaging of heavy-duty products, such as large-scale electrical products, TV sets, washing machines, etc.

Description of drawings

This material structure is as shown in accompanying drawing 1, and Fig. 1 is the cross-sectional view of this film-plastic packaging material, and the mark explanation among the figure is as follows:

1: Represents the "shell layer" of the film-plastic packaging material;

2: Represents the "solid layer" of film-plastic packaging materials;

3: Represents the "covering layer" of the film-plastic packaging material.

The fiber composite molded packaging material provided by the present invention is composed of three parts: the molded pulp fiber shell layer 1 , the fiber composite material filled solid layer 2 provided by the present invention, and the pulp fiber plate material as the covering layer 3 . Among them, the outer shell layer 1 is designed and processed into a corresponding pulp fiber composite molded part according to the shape and structure of the packaged article; the solid layer 2 is filled with the fiber composite material provided by the present invention to increase the resistance of the outer shell layer 1 to a strong external force. Impact strength, which is characterized by a similar concrete structure. The crude fiber is cut from agricultural waste fibers (rice straw, wheat straw, corn straw, etc.) into tubular fibers with a length of 3-60mm, which maintains its own natural structure and has good cushioning Performance and support strength, forming a structure with certain elasticity, which is equivalent to "steel skeleton". The fine fiber is to crush the agricultural waste fiber into 10-60 mesh fiber powder, which is equivalent to "pebbles and sand", and the adhesive is equivalent to "cement "; Pulp fiber flat plate covering layer 3 is a fiber composite flat plate covering the solid layer 2, and bonded with the shell layer 1 to form an integral structure.

Detailed ways

Example 1

The packaging template of an instrument is shown in Figure 1, with a length of 50 cm, a width of 50 cm, and a height of 10 cm. It is manufactured according to the structure shown in Figure 1. The outer shell layer 1 is a composite molded part of white pulp and fiber on the outer surface; the fiber composite material fills the solid layer In 2, the ratio of thick and thin fibers is 1:2, the adhesive accounts for 3% of the total weight of the material, the length of the thick fibers is 5-15mm, the fine fiber particles are 20-30 mesh, and the thickness varies according to the shape of the product; the fiber composite plate The cover layer 3 is a gray-backed white panel paper, and is bonded with the outer shell layer 1 to form an integral structure.

Example 2

The packaging template of an instrument is shown in Figure 1, with a length of 50 cm, a width of 50 cm, and a height of 10 cm. It is manufactured according to the structure shown in Figure 1. The outer shell layer 1 is a composite molded part of white pulp and fiber on the outer surface; the fiber composite material fills the solid layer In 2, the ratio of thick and thin fibers is 4:1, the adhesive accounts for 6% of the total weight of the material, the length of the thick fibers is 10-20mm, the fine fiber particles are 30-40 mesh, and the thickness varies according to the shape of the product; the fiber composite plate The cover layer 3 is a gray-backed white panel paper, and is bonded with the outer shell layer 1 to form an integral structure.

Example 3

The packaging template of an instrument is shown in Figure 1, with a length of 50 cm, a width of 50 cm, and a height of 10 cm. It is manufactured according to the structure shown in Figure 1. The outer shell layer 1 is a composite molded part of white pulp and fiber on the outer surface; the fiber composite material fills the solid layer In 2, the ratio of thick and thin fibers is 2:1, the adhesive accounts for 10% of the total weight of the material, the length of the thick fibers is 15-25mm, the fine fiber particles are 40-50 mesh, and the thickness varies according to the shape of the product; the fiber composite plate Overlay 3 is white top paper on grey. And bonded with the shell layer 1 to form an integral structure.

Claims (7)

1, a kind of fiber composite materials with buffering, load-bearing property, mainly be composited by adhesion agent by coarse fibre, fine fibre, wherein coarse fibre is the tubular fiber of length 3～60mm, and fine fibre is 10～60 purpose fiber powder, and the weight ratio of coarse fibre and fine fibre is 5～100: 10.

2, the described fiber composite materials of claim 1, wherein said coarse-fibred length is 5～40mm, fine fibre is 20～40 purpose fiber powder.

3, claim 1 or 2 described fiber composite materialss, wherein the weight ratio of coarse fibre and fine fibre is 10～60: 10.

4, a kind of film is moulded packing, mainly comprises outer shell, solid layer and backplane level, and wherein solid layer adopts any fiber composite materials of claim 1～3.

5, the described film of claim 4 is moulded packing, and wherein outer shell is a paper pulp fiber molding layer, and backplane level adopts the paper pulp fiber plate material.

6, claim 4 or 5 described molding packaging materials, wherein the thickness of solid layer can be regulated arbitrarily, and the fiber composite materials of solid layer evenly is filled in whole spaces of outer shell and backplane level encirclement.

7, the described arbitrary film of claim 4～6 is moulded the packing that packing are used for Heavy Product.

Images