JPH0672465A - Packing material and manufacture of the same - Google Patents

Abstract

PURPOSE:To provide a packing material made of natural substance, capable of natural corruption, easy to dispose by burning, light-weight, properly strong and easy to process, by a method wherein grains are heated to foam, coated with binder and molded by pressing. CONSTITUTION:Corn 3 is put through a hopper 2 into heating container 1, which is then sealed with a lid 4, and heated to foam. The foamed corn grains 5 are coated with binder. As the binder, viscouse may be used, for example. Next, the foamed and binder-coated corn grains 7 are charged into a die 6, covered with a lid 8, and applied with pressure. Then the corn grains 7 are binded into a mold 9. The mold 9 is then dried so that its inside can be binded fully. In this instance, it is also possible that at the time when the corn grains are pressed and molded, the die 6 is vacuum inside, so that drying work can be saved. After that, the mold 9 is cut by a proper length and used to fill a gap as a shock absorbing and packing material in packing various kinds of goods.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging material and a method for producing the same, and in particular, for packaging various products, it is light and can be used for filling voids, fixing products, etc.
The present invention relates to a cushioning packaging material made of a natural material that has appropriate strength and is easy to process, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, a large amount of petrochemical products such as expanded polystyrene have been used as cushioning packaging materials.
At the time of incineration and incineration after use, high heat was generated, causing damage to the incinerator and other pollution problems.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above problems and is made of a natural material, which is light and has appropriate strength.
It is an object of the present invention to provide a buffer packaging material that can be easily processed and a method for manufacturing the same.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a method for producing a packaging material, which comprises heat-foaming grains, applying a binder, press-molding, and drying the molded product, and a plurality of methods. The present invention relates to a packaging material, which is obtained by binding foamed grains such as corn with a binder to form a molded product of an appropriate size.

Examples of the grains used in the present invention include corn, barley, wheat, oats, fluff, rice, knees, pimples, beans and the like, and corn is used for the purpose desired in the present invention. Is preferable (hereinafter, it will be explained using corn). The corn fruit is rich in starch and is used as food or feed for livestock and is cultivated all over the world. It is easily available and edible. Therefore, safety as a packaging material can be secured. In the heating container,
When corn is charged, sealed and heated for a certain period of time, and then opened to the atmosphere, the corn explodes and expands to become foamed. FIG. 1 (A) shows an example of the operation, in which the corn 3 is introduced from the hopper 2 into the heating container 1,
It is sealed with a lid 4, heated and foamed. As the foamed corn, popcorn obtained by roasting and puffing corn can be used. A binder is applied to the foamed corn grains 5. As a binder,
For example, there is viscose. Viscose is a solution of sodium cellulose xanthate dissolved in water or sodium hydroxide solution.
The binder can be applied by spraying and adhering the binder, spraying it, or immersing it in a binder solution. The foamed corn coated with the binder is filled in, for example, a mold and pressure is applied to form a molded product having an appropriate size. FIGS. 1 (B) and 1 (C) show an example of such an operation and a molded product obtained by such an operation. A mold 6 is filled with foamed corn 7 coated with a binder, a lid 8 is placed, pressure is applied, and foaming is performed. The corn is collected to form a molding 9. The molded product 9 may be dried so as to be sufficiently bonded to the inside thereof. At the time of the pressure molding, the drying operation may be omitted, for example, by making the inside of the mold 6 a vacuum. The molded product 9 can be used as a buffer packaging material by cutting it into an appropriate size and filling the voids when packaging various products. Since the packaging material is made of natural material, it can be returned to soil, can collapse naturally, is easy to waste and incinerate, is safe and light, has appropriate mechanical strength, and can be processed as packaging material such as cutting. It's easy.

[0006]

EXAMPLES Next, examples of the present invention will be shown. Example A large number of corns were placed in a 1-liter heating container, sealed and heated at 150 ° C. for 30 minutes, then exposed to the atmosphere, explosively expanded, and foamed corn grain 1
00cc Viscose solution is sprinkled and adhered, filled in a mold like a lunch box, covered, pressure is applied to collect the foamed corn, dried in a heating furnace, and the height is 3 cm and the width is 10 c.
A molded product having a length of 30 cm was obtained. When this molded product was cut and used as a packaging material, it could be used sufficiently as a cushioning packaging material.

[0007]

As described above, according to the present invention, it is possible to provide a cushioning packaging material which is made of a natural material, which can be naturally disintegrated, is easy to waste and incinerate, is light, has appropriate strength, and is easy to process. did it.

[Brief description of drawings]

FIG. 1A is an explanatory diagram showing an embodiment of the present invention, and FIG.
Is an explanatory view showing an embodiment of the present invention, (C) is an example configuration diagram of a molded product

[Explanation of sign]

 1 ... Heating container 2 ... Hopper 3 ... Corn 4 ... Lid 5 ... Foamed corn 6 ... Mold 7 ... Binder-coated foamed corn 8 ... Lid 9 ... Molding Thing (packaging material)

Claims (4)

[Claims] 1. A method for producing a packaging material, which comprises heat-foaming grains, applying a binder, press-molding, and drying the molded product. 2. The grain comprises corn.
The method for producing a packaging material according to. 3. The binder according to claim 1, wherein the binder is viscose.
The method for producing a packaging material according to. 4. A packaging material comprising a plurality of foamed grains such as corn bonded with a binder to form a molded product of an appropriate size.