JP2000038466A - Foam comprising vegetable material and polyolefin resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a foam making it possible to effectively utilize barley lees (beer cakes) and/or tea dregs for cushioning materials by mixing a specific amount of the barley lees and/or the tea dregs with polypropylene resin. SOLUTION: This foam comprises 20-50 wt.% of polypropylene resin and 50-80 wt.% of barley lees generated in a process for producing beer and/or tea dregs generated in a process for producing a tea drink. The foam is obtained by drying the barley lees and/or the tea dregs, pulverizing the dried product, extruding the pulverized product together with polypropylene resin and water by a twin-screw-extruder and subsequently forming the extruded product. The barley lees and/or the tea dregs may be dried in such an extent as not interfering a subsequent process, and may further be pulverized in such an extent that the pulverized barley lees and/or tea dregs pass through a sieve having an opening size of 0.5 mm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam mainly composed of wheat slag generated in a beer manufacturing process, tea scum generated in a tea beverage manufacturing process, and polypropylene resin.

[0002]

2. Description of the Related Art Conventionally, barley slag generated in a beer manufacturing process and tea slag generated in a tea beverage manufacturing process are partially used for fertilizers and soil conditioners, but most are discarded without being effectively used. Have been.

[0003]

Most of the above-mentioned barley slag and tea slag are discarded without being effectively used, and are buried or incinerated, which may contaminate or destroy the natural environment.

[0004]

In order to solve the above-mentioned problems, barley sprouts generated in a beer manufacturing process and tea slag generated in a tea beverage manufacturing process are dried, pulverized, mixed with a polypropylene resin and extruded. Thus, it was found that a foam was obtained.

[0005] Barley slag generated in the beer production process is mostly hulls and is generated in a state containing a large amount of water. The tea residue generated in the tea beverage manufacturing process is also a residue obtained by extracting and filtering a beverage component, and is generated in a state containing a large amount of water.

[0006] Starch and protein dissolve when heated in the presence of sufficient water to form a state similar to hot-melted plastic and can form a uniform film. Element is the main component and does not dissolve even when heated in the presence of water.

That is, even if water is added to the above-mentioned barley scum or tea scum to obtain a foam by extrusion molding, a film of each cell cannot be formed and a foam cannot be obtained.

[0008] Then, the above-mentioned barley scum and tea scum are dried and pulverized.
It was extruded using a screw extruder to obtain a foam.

The barley scum and the tea scum may be dried to such an extent that they do not hinder the subsequent pulverization. The pulverization may be performed so that the pulverized barley scum and tea slag pass through a sieve having an opening of 0.5 mm.

A desired foam can be obtained if the proportion of the raw material composition of the foam is 20% or more of the polypropylene resin in the whole.

The ratio of the polypropylene resin is 5
Although a similar foam can be obtained even if it exceeds 0%, the ratio of the polypropylene resin is desirably 50% or less from the viewpoint of effective use of barley slag and tea slag.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples.

[0013]

Example 1 Barley slag generated in the beer production process (water content: 6)
6%) was dried at a hot air temperature of 105 ° C. using a flash dryer manufactured by Johnson Boiler Co., Ltd. to a water content of 7%.

It is pulverized by a pulverizer and has an opening of 0.5 mm.
To obtain dry powder of barley slag.

A twin screw extruder TEX69 manufactured by Japan Steel Works, Ltd.
Using FCT-21AW, 35 parts by weight of polypropylene resin and 10 parts by weight of water
Parts by weight, the cylinder tip temperature was set to 145 ° C., the die temperature was set to 170 ° C., and the screw rotation speed was 280 rpm.
p. m to obtain a plate-like foam having a thickness of 20 mm and a width of 100 mm and a rectangular cross section perpendicular to the extrusion direction.

The obtained foam was subjected to a temperature of 24 ° C. and a relative humidity of 6
After one day in a 5% room, the density is 0.055g
/ Cm ³ .

[0017]

Example 2 In place of barley produced in the beer production process, tea residue produced in the tea beverage production process was used.
In the same manner as described above, a foam was obtained.

The obtained foam was treated at a temperature of 24 ° C. and a relative humidity of 6
After standing in a 5% room for one day, its density is 0.050g
/ Cm ³ .

[0019]

According to the present invention, a small amount of polypropylene resin can be used to remove barley scum generated in the beer manufacturing process and tea slag generated in the tea beverage manufacturing process, which cannot be essentially formed into a foam by itself. Since it can be made into a foam, the barley slag and the tea slag can be effectively used as a buffer.

Claims (1)

[Claims] Claims: 1. A process for producing a beer and / or tea beverage produced in a beer production process and / or a tea beverage production process, wherein the content thereof is 50% by weight or more and 80% by weight or less.
And the content of polypropylene resin is 20% by weight or more and 50% or more.
Foam that is less than or equal to weight percent.