CN1118519C - Process for preparing degradable disposable product and its products - Google Patents
Process for preparing degradable disposable product and its products Download PDFInfo
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- CN1118519C CN1118519C CN 00133393 CN00133393A CN1118519C CN 1118519 C CN1118519 C CN 1118519C CN 00133393 CN00133393 CN 00133393 CN 00133393 A CN00133393 A CN 00133393A CN 1118519 C CN1118519 C CN 1118519C
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Abstract
The present invention discloses a method for manufacturing disposable degradable products, which comprises: crushing straw into over 60 meshes of powder with water content not exceeding 2%; then, putting the powder mixed with preservative, adhesive, lubricant, anchoring agent, filler and proper amount of water into a mould used for preshaping a product; pressurizing and heating the product by a hydraulic machine to shape the product; packing the product disinfected by ultraviolet light. The present invention also discloses a product manufactured by the method. Compared with products of the prior art, the product manufactured by the method of the present invention has higher intensity.
Description
The present invention relates to the manufacture method and the goods thereof of degradable disposable product.
The disposable tableware that uses mostly is foam plastic product at present.Moreover, the internal packing of product is also mostly is expanded plastics.This material has light weight, and plasticity-is strong, have certain antihunt action, inexpensive and the part be nontoxic advantage.But the deadly defect of this material is not degrade.In case with after tableware or internal packing just be difficult to handle after reclaiming.Take landfill, it will take a large amount of soils, and 10 years, even remain unchanged decades.Take to burn, can cause atmospheric pollution.The use of foam plastic product has become a kind of public hazards in fact, is a kind of " white pollution ".
Today, people are more and more clearer to the understanding of environmental protection, and resisting " white pollution " has become not only environmental protection personnel's task, also is the public's requirement.
In order to change the status quo, existing many people have proposed to use the straw of degradation material, particularly farm crop, and the seed cot is made disposable tableware.For example, Chinese patent application CN1173451A, CN1198314A, CN1199121A, CN1172756A, CN1244349A and CN1246313A disclose the straw with farm crop, the method for material as the manufacturing disposable tableware of the main raw material of making degradable disposable tableware that be easy to get such as rice hulls.Although disclosed manufacture method has difference on proportion of raw materials and complete processing in above-mentioned document, the common defects that their exist is the undercapacity of the disposable tableware made.By the disclosed manufacture method of aforementioned documents all is with binding agent straw etc. to be bonded together by hot pressing to form.Raw materials such as straw itself are loose, though with binding agent they are sticked together by hot-forming again, still have the space between the straw etc., and the existence in these spaces cause making the deficiency of tableware on intensity.On the other hand, the binding agent of use mostly is edible binding agent, and the cohesive strength of this binding agent is not very high, and this is to cause second not high reason of tableware intensity of making.
Since above two aspects, consequently scrap rate rising in manufacturing processed on the one hand, and cost increases; Frangible rate increases in transportation and use on the other hand, influences the sale of product.
Therefore, one object of the present invention is to provide a kind of manufacture method that can overcome the degradable disposable product of above-mentioned defective.
Another object of the present invention is to provide the goods of making by preceding method.
According to first purpose of the present invention, the manufacture method of degradable disposable product comprises the steps:
At first, the main raw material of making degradable disposable product is pulverized into powder more than 60 orders, the water content of described powder is less than 2%.Described main raw material comprises straw, the seed shell skin of farm crop, as paddy skin, wheat skin, leguminous plants, as shell of soybean, peanut etc.These materials are by shredding unit, and as pulverizer, ball mill is pulverized.The weighting agent that the present invention uses the back to illustrate is a Semen Maydis powder, the starch that it is used than prior art has higher granule strength, and because the powder that the size ratio straw of weighting agent etc. are made is thinner, it can be filled in the space between the powder that straw etc. makes, thereby increases the strength of joint between described powder.
Its water content of powder of the main raw material of making according to the present invention is controlled under 2%, and compared with the prior art, this will help reducing the issuable bubble of goods behind bonding, hot compacting, help the intensity of reinforced article.
Be ground into the step of powder according to the main raw material that will make degradable disposable product of the present invention, when the water content of powder surpasses 2%, also comprise one making the step of powder oven dry.
The second, get the powder of the described main raw material of 65-70% (by weight, down with), the weighting agent of the binding agent of 10-12%, the tackifier of 2-4%, 9-11%, the lubricant of 5-7% and an amount of water is mixing fully, wherein,
Described binding agent comprises the edible gum of 20-30%, as polyvinyl alcohol or α-Qing Jibingxisuanzhi glue, wherein preferably molecular weight at the polyvinyl alcohol more than 10000, the synthesizing amino air aldehyde resin of 30-40%, as melamine-formaldehyde resin adhesive, Phenol aldehyde resin or urea-formaldehyde resin adhesive, and water solvent is formed.The effect of binding agent is to make the powder of main raw material and weighting agent to be bonded to one.
In order to increase the cohesive strength of binding agent, the tackifier that the present invention also uses, tackifier are titanium dioxide, and its granularity is more than 100 orders.
As previously mentioned, used weighting agent according to manufacture method of the present invention, used weighting agent is a Semen Maydis powder, and its granularity is more than the granularity height of described powder, more than 100 orders.As previously mentioned, its role is to the space of filling powder intergranular.Use Semen Maydis powder than using starch to have structural strength on the higher microcosmic in the prior art, not yielding, thus improved the structural strength of goods.
Lubricant is carbon atoms stearate between 16～20.The effect of lubricant is that goods are easy to take out from mould behind hot compacting.
The 3rd, the batching that above-mentioned steps obtains is put into the mould that desire is shaped, then mould is placed in the thermocompressor, the hydropress applied pressure is 10-25Mpa, temperature 140-170 ℃, the time of the pressurization of heating is 45-90 second, and the mould that wherein said desire is shaped is dish, bowl, lunch box etc.
The 4th, after the tableware of hot compacting takes out from mould, through disinfection by ultraviolet light, packing.
According to another aspect of the present invention, press the goods that preceding method is made, comprise tablewares such as disposable dish, bowl, lunch box.
The product of making according to the manufacture method of degradable disposable product of the present invention has solved the defective that prior art exists, and has improved the intensity of goods, and owing to has been mixed with the mildew that synthesizing amino aldehydes resin has solved goods effectively in tackiness agent.
Above-mentioned purpose of the present invention and other purpose and advantage thereof will be more readily apparent from by the detailed description below in conjunction with the accompanying drawing illustrated embodiment, and accompanying drawing has:
Fig. 1 a-1b is front view and the side-view of first embodiment of the goods made according to disposable manufacture method of falling goods of the present invention;
Fig. 2 is the front view according to second embodiment of the goods of the manufacture method manufacturing of degradable disposable product of the present invention;
Fig. 3 is the front view according to the 3rd embodiment of the goods of the manufacture method manufacturing of degradable disposable product of the present invention.
Fig. 1 a to Fig. 3 shows three embodiment that make according to the manufacture method of degradable disposable product of the present invention, and they are disposable lunch-box respectively, disposable bowl and disposable dish.
Claims (5)
1. the manufacture method of degradable disposable product comprises the steps:
The main raw material of making the disposable degradable product is ground into powder more than 60 orders with shredding unit, and described main raw material comprises straw, seed shell, and the water content of described powder is less than 2%;
Get the powder of the main raw material of 65-70% (by weight, down with), the weighting agent of the binding agent of 10-12%, the tackifier of 2-4%, 9-11%, the lubricant of 5-7% and an amount of water is mixing fully, wherein:
Described tackiness agent is by the edible gum of 20%-30%, and the synthesizing amino air aldehyde resin of 30-40% and water solvent are formed;
Described weighting agent is a Semen Maydis powder, and its granularity is more than 100 orders;
Described lubricant is the stearic acid sodium salt of carbon atoms between 16-20, and its granularity is more than 100 orders;
Described tackifier are the titanium dioxide of granularity more than 100 orders;
The above-mentioned batching of abundant mixing is inserted in the mould of desiring formed article, and the mould that will be equipped with described batching is then put into hydropress, and applied pressure is 10-25Mpa, and temperature is 140-170 ℃;
The goods of hot compacting are placed ultraviolet ray sterilization down, packing then.
2. in accordance with the method for claim 1, wherein after pulverizing, described main raw material also comprises baking step.
3. in accordance with the method for claim 1, wherein said edible gum comprises polyvinyl alcohol, α-Qing Jibingxisuanzhi glue.
4. in accordance with the method for claim 1, wherein said synthesizing amino air aldehyde resin comprises melamine-formaldehyde resin glue, Phenol aldehyde resin or urea-formaldehyde resin glue.
5. according to the goods of any manufacturing of the described method of claim 1-3, it is characterized in that described goods comprise mess-tin, dish or the bowl of being made up of box body and lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00133393 CN1118519C (en) | 2000-11-28 | 2000-11-28 | Process for preparing degradable disposable product and its products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00133393 CN1118519C (en) | 2000-11-28 | 2000-11-28 | Process for preparing degradable disposable product and its products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1296996A CN1296996A (en) | 2001-05-30 |
| CN1118519C true CN1118519C (en) | 2003-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 00133393 Expired - Fee Related CN1118519C (en) | 2000-11-28 | 2000-11-28 | Process for preparing degradable disposable product and its products |
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| CN (1) | CN1118519C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001290491A1 (en) * | 2000-09-09 | 2002-03-22 | Thiam Huay Gary Choo | Moulded product |
| CN102031005B (en) * | 2010-11-30 | 2012-06-13 | 宁波木林森纤维科技有限公司 | Plant fiber material composite and preparation method of plant fiber product |
| CN103027460B (en) * | 2012-12-04 | 2014-12-03 | 青岛大学 | Method for preparing snack boxes by using soybean raw material |
| CN105295409B (en) * | 2015-11-25 | 2018-07-06 | 武夷山市怡华竹木制品有限公司 | A kind of preparation method of bamboo fiber material |
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2000
- 2000-11-28 CN CN 00133393 patent/CN1118519C/en not_active Expired - Fee Related
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| CN1296996A (en) | 2001-05-30 |
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