CN1271039A

CN1271039A - Vegetable fiber containing product and its production process

Info

Publication number: CN1271039A
Application number: CN 99105770
Authority: CN
Inventors: 苏建兴; 佐藤圣子
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-16
Filing date: 1999-04-16
Publication date: 2000-10-25

Abstract

By using vegetable fiber as main raw material and through the steps of adding adhesive and demolding agent and then mixing, moistening, press-molding into form, and others, the product is obtained, such as seedling growing container, disposable tableware, and packaging container. The present invention has simple production process, wide raw material resource and low cost, and the product after being used can be degraded biologically into organic fertilizer.

Description

A kind of vegetable fiber containing product and preparation method thereof

The present invention relates to contain the string composition, more specifically saying so a kind of is that main raw material preparation comprises the disposable tableware that agricultural is used with the region between the heart and the diaphragm seedling alms bowl or food industry and the goods of food container with the string.

As everyone knows, will discharge a large amount of discarded objects human every day, and a large amount of in discarded object be light weight and bulky plastic products, people are referred to as " white pollution ".For eliminating white pollution, protect environment, people carry out number of research projects.For example Chinese patent 91108365.0 and Chinese patent application 98111945.x propose to pulverize back straw, corncob, rice bran etc. and adhesive, filler, dispersant mixing, tableware and food package box are made in mold pressing, this method (hereinafter to be referred as dry method) water consumption is few, technology is simple, but, filler such as talcum powder, calcium carbonate and the adhesive used in this method prescription do not have good stripping result, and suitability for industrialized production is very difficult; Also as application number be 95111976.1 disclosed be main raw material with the string straw pulp, be equipped with modifier and handle, make flowerpot through vacuum suction net mold forming.Not only price is higher for the straw pulp that this method (hereinafter to be referred as the paper pulp method) adopts, and can produce a large amount of waste water in the straw pulp bleaching process, and serious environment pollution is the industry of the strict control development of country, and the straw pulp source is restricted.This method paper mould complex manufacturing need to consume a large amount of water, so cost certainly will be higher; Used filler talcum powder, precipitating agent aluminum sulfate weakens alms bowl body air-and water-permeable performance in the prescription in addition, is unfavorable for plant growing, so this technology is difficult to promote.

The objective of the invention is to overcome the shortcoming of prior art, providing a kind of is the region between the heart and the diaphragm seedling alms bowl that comprises agriculture usefulness that makes of main raw material and the tableware that food industry is used, biodegradable articles of food container and preparation method thereof with the string.

Main technical schemes of the present invention: the mixing by a certain percentage of the string after will pulverizing, binding agent and releasing agent, humidification and compression molding promptly obtain required goods.

The composition of goods of the present invention comprises string, binding agent and releasing agent, its weight ratio: string: binding agent: releasing agent is 100: 50-60: 7-8.

Described string comprises the herbaceous plant of straw, cavings, reed, cogongrass and bamboo, basis, can select wherein a kind of, two or more mixture, herbaceous plant preferably, and it helps environmental protection more.

Described binding agent comprises cereal starch, preferably the strong wheat flour of adhesive property.

Described releasing agent comprises paraffin, rapeseed oil, preferably food-grade paraffin wax.

Goods preparation method of the present invention may further comprise the steps:

1. pulverize: the string fragmentation;

2. mix: string, binding agent, releasing agent are mixed in proportion, stir;

3. humidification: limit Jia Shui is stirred in the waterside that adds the 30-35% of compound weight in (2) step compound, makes its compound keep the loose powder shape;

4. compression molding: the compound of (3) step humidification is added in the mould, and compacting is 0.5-1 minute under 150-160 ℃, 2-2.8MPa, treats to take out finished product after binding agent slaking and the water evaporates from mould.

The described string of step (1) should be crushed to the 30-40 order, pulverizes too carefully, and fiber is too short, and product intensity weakens, and crosses that slightly then fiber is oversize, and the finished product internal structure is loose, and the surface is crude; Described releasing agent should be pulverized the 10-20 order during with paraffin, too fining-off difficulty of particle, and too slightly skewness then influences the demoulding.

The described amount of water of step (2) should be controlled suitably, and water is difficult for mixing thoroughly less, and water forms the semi-fluid shape at most, is unfavorable for press forming, and it is also relatively more difficult to remove moisture content.

The described compression molding of step (3), temperature and pressure is the key of moulding, and temperature is low, and the time is short, and binding agent can not slaking, and the water evaporates amount is few, can not be shaped; The temperature height.Time is long, and binding agent meeting coking makes it lose viscosity.

Advantage of the present invention:

The present invention compares with dry method, owing to adopt releasing agent, the demoulding is easy, the make efficiency height.Help industrial production; Compare with the paper pulp method, raw material sources are extensive, and water is few, save the used energy of dehydration.Therefore cost of manufacture is lower; Do not have fillers such as talcum powder, calcium carbonate, clay in the prescription of the present invention, the pot for growing seedlings air-and water-permeable performance of the agricultural usefulness that makes is good, helps plant strain growth, and after the band alms bowl was transplanted to the land for growing field crops, the alms bowl body can decompose voluntarily, and catabolite is as the organic fertilizer of soil.In a word; goods agricultural usefulness or that food is used that make by prescription of the present invention and method; not only raw material sources are extensive; cheap; the more important thing is can eliminate " white pollution ", the protection environment be highly profitable; also can eliminate simultaneously by the burning atmosphere pollution that crop stalk caused, so the present invention has than large economy benefit and social benefit.

Further specify characteristics of the present invention below by instantiation.

Example 1

This example is a preparation the region between the heart and the diaphragm seedling alms bowl.

The raw material that this example is used: straw 20kg is ground into 30 order powder; Food-grade paraffin wax 1.5kg is ground into 10 purpose powder; Flour 10kg.

Straw powder, flour, paraffin placed in the mixer mix, slowly add the water of 9.5kg during stirring, after stirring, take out compound at every turn and inject die cavity, compacting is 1 minute under 150 ℃, 2.8Mpa.After flour slaking and the water evaporates, finished product is taken out in die sinking, so repeats, and can make 160 in the region between the heart and the diaphragm seedling alms bowl of 450ml.

Example 2

The raw material that this example is used: cogongrass 10kg and cavings 10kg are ground into 40 order powder; Food-grade paraffin wax 1.6kg is ground into 20 order powder; Flour 12kg; Water 11kg.

Operating process is with example 1, operating condition: 160 ℃ of the temperature during compression molding, pressure 2.5Mpa, suppressed 1 minute.Can make 160 of 450ml pot for growing seedlings.

Example 3

This example is the preparation disposable tableware.

Raw material composition, consumption and operating process that this example is used and condition be with example 1, be used mould be the mould of tableware, releasing agent is a rapeseed oil.

Claims

1. goods that contain string is characterized in that composition is string, binding agent and releasing agent, and its weight ratio is a string: binding agent: releasing agent=100: 50-60: 7-8.

2. according to the described goods of claim 1, it is characterized in that described string comprises herbaceous plant and the bamboo and wood of straw, cavings, reed, cogongrass, select wherein a kind of, two or more mixture.

3. according to the described goods of claim 2, it is characterized in that described string is the herbaceous plant that comprises straw, cavings, reed, cogongrass.

4. according to the described goods of claim 1, it is characterized in that described binding agent is a cereal starch.

5. according to the described goods of claim 4, it is characterized in that described binding agent is a wheat flour.

6. according to the described goods of claim 1, it is characterized in that described releasing agent comprises food-grade paraffin wax, rapeseed oil.

7. the preparation method of the described goods of claim 1, its feature may further comprise the steps in preparation process:

(1) pulverizes: string is crushed to the 30-40 order;

(2) mix: string and releasing agent, the binding agent of fragmentation are mixed in proportion, stir;

(3) humidification: in (2) step compound, add the water of the 30-35% of compound weight, add water while stirring, make its compound keep the loose powder shape;

(4) compression molding: the compound of (3) step humidification is added in the mould, and compacting is 0.5-1 minute under 150-160 ℃, 2-2.8Mpa, treats to take out finished product after binding agent slaking and the water evaporates from mould.

8. in accordance with the method for claim 7, when it is characterized in that the described releasing agent of step (2) is paraffin, before mixing, it should be crushed to the 10-20 order.