CN1273204A

CN1273204A - Packing material with liner of stalk (or straw) fibres and its production technology

Info

Publication number: CN1273204A
Application number: CN99115768A
Authority: CN
Inventors: 吴志刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-10
Filing date: 1999-05-10
Publication date: 2000-11-15
Anticipated expiration: 2019-05-10
Also published as: CN1099986C

Abstract

A cushioning-packing material is prepared from stalk or straw fibre through washing, disinfecting, pulverizing, mixing with additive and hot-die pressing, and it is substituted for moulding and foamed plastics. Its raw materials are stalk or straw powder (60-75 wt.%), additive (20-30 wt.%) and water (1-5 wt.%). Said additive is prepared from corn flour, rosin, clay, edible adhesive, calcium carbonate and edible pigment. Its advantages are rich raw materials, low cost, simple preparing process and easy degradation.

Description

Packing material with liner of stalk (or straw) fibres and production technology thereof

The present invention relates to packing material with liner of stalk (or straw) fibres and production technology thereof.

What at present, known bumper and absorbing shock packing used is foamed plastic or paper mould material.Though foam plastic product has brought facility to people's life, be not worth owing to have to recycle, number of applications is big, and the volume that takes up room is also big.In natural environment, also be difficult to natural degradation even experience hundreds of years.They are imbedded in the ground, can destroy soil texture, the deterioration soil; Fall into the water, the meeting polluted-water influences water quality; Burning disposal, can produce ten surplus kind of noxious gas, atmosphere pollution.Border measuring and calculating factually, one mu of soil contains 3.9 kilograms of residual-film amounts, can make crop production reduction 11-23%.Produce and use chlorine fluorine hydroxyl classes (being fluorine Lyons) as foaming agent in the foam plastic product process in a large number, meeting havoc ozone layer causes the human cancer attack rate to increase, and brings serious harm for the vegeto-animal growth of the earth." the Montreal convention " of the common signature of most countries head in 1987 clearly stipulated, must be stopped to produce and using fluorine Lyons as early as possible.The Chinese government promised to undertake 2003 in 1994, and China is except that refrigerator and hard polyurethane fat industry, and the foamed plastic industry will be cancelled comprehensively.Moulded paper pulp product, though environmental protection is had certain positive effect, because it expends the timber of a large amount of preciousnesses, the cost of product height is difficult to make consumers in general to accept.Solve plastic wastes pollution technology and listed in one of 50 up-to-date technologys of 21 century by world authoritative institution.At present, states such as American and Britain, meaning, day, method begin the part achievement of scientific research is put goods on the market, and its major product only is agricultural mulching and plastic packaging bag, fail to be applied to the bumper and absorbing shock packing maturely so far and China is on the same level.

The objective of the invention is, make full use of very abundant vegetable fibre resources such as stalk, with special method, formation can substitute the pad package material and the production technology thereof of paper mould and foamed plastic, with the protection environment, eliminates white pollution.

The object of the present invention is achieved like this: it is a primary raw material with vegetable fibres such as wheat straws, makes additive with several safety non-toxic materials, through unique technology and forming technique, makes the high-fall pad package material of separating.Specifically:

1. raw material: at least a in the multiple natural plant fibre class materials such as wheat straw stalk, cornstalk, sorghum stalk, straw, bagasse, cotton stalk, peanut shell, total component is 60-98% (percentage by weight);

2. additive: at least a in starch, rosin, calcium carbonate, clay, edible glue, water, the food coloring, total component is 3-40% (percentage by weight);

3. forming technique: mold heated 120-250 ℃, and the 0.05-2mm tapering is arranged, to solve exhaust and release problems.

The manufacture method of above-mentioned degradable pad package material is as follows:

1. the raw material that can make pad package material cleans, oven dry;

2. the raw material pulverizing that can make pad package material is to the 50-200 order;

3. mix with additive, water, mould is injected in the activation back, pressurization 30-2000kg/cm ², mould is heated to 120-250 ℃, and mould remaining time is 2 seconds-1 minute, and the packing embryo can be taken off rapidly after the die sinking;

4. can dispatch from the factory after the encapsulation sterilization.

The pad package material of this alternative paper mould and foamed plastic has that density is little, in light weight, compression strength is high, characteristics such as certain elasticity are arranged, and aboundresources, and is cheap, is easy to degraded, helps eliminating white pollution.

The present invention below is described in detail in detail for example:

1. the agricultural crop straw 70% of Fen Suiing, additive 25%, water 5% injects mould behind the stirring and evenly mixing, pressurization 50-1000kg/cm ², 180 ℃ of mold temperatures, in 6 seconds of mould remaining time, the product embryo is taken out in die sinking, and sterilization, packing are dispatched from the factory.

2. the agricultural crop straw 50% of Fen Suiing, additive 48%, water 2% injects mould behind the stirring and evenly mixing, pressurization 1000-2000kg/cm ², mould is heated to 200-250 ℃, and mould remaining time is 1 second-3 minutes, and foaming is impacted in moulding, and die sinking is also taken out the product embryo, and sterilization, packing are dispatched from the factory.

Claims

1. the packing material with liner of stalk (or straw) fibres of alternative paper mould and foamed plastic is characterized in that: be made up of agricultural crop straw, additive and water.

2. according to the described packing material with liner of stalk (or straw) fibres of claim 1, it is characterized in that: agricultural thing thing stalk can be selected for use in wheat straw stalk, cornstalk, sorghum stalk, cotton stalk, the peanut shell at least a, when selecting for use when two or more, its total component is 50-98% (percentage by weight).

3. according to the described packing material with liner of stalk (or straw) fibres of claim 1, it is characterized in that: additive can be selected for use in starch, rosin, calcium carbonate, clay, edible glue and the food coloring at least a, when selecting for use when two or more, its total component is 6-45% (percentage by weight).

4. according to the described packing material with liner of stalk (or straw) fibres of doing of claim 1, it is characterized in that: these packing can be box, tube, jar, (holder) dish, basin, bowl, cup etc.

5. make the described packing material with liner of stalk (or straw) fibres production method of doing of claim 1 for one kind, it is characterized in that: raw material is made 50-100 order powder, mix, inject mould, pressurization 30-2000kg/cm with additive and water ², mold heated is to 120-500 ℃, and mould remaining time is 2 seconds-1 minute, and die sinking gets final product, and sterilization, packing are dispatched from the factory.

6. make the described packing material with liner of stalk (or straw) fibres production method of doing of claim 1 for one kind, it is characterized in that: mould will have the 0.05-2mm tapering, to solve the problem of the exhaust and the demoulding.