CN1212311A - Pulp moulding product dry shaping process - Google Patents
Pulp moulding product dry shaping process Download PDFInfo
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- CN1212311A CN1212311A CN 98111532 CN98111532A CN1212311A CN 1212311 A CN1212311 A CN 1212311A CN 98111532 CN98111532 CN 98111532 CN 98111532 A CN98111532 A CN 98111532A CN 1212311 A CN1212311 A CN 1212311A
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Abstract
The dry shaping process for paper pulp moulded product blank is applicable to production of disposable paper tablewares, packaging materials for various products and medical instruments, and includes the following steps: 1. regulating water content of paper pulp moulded product blank by means of humidification or dehumidification, distributing the water content in the interior of the paper product blank uniformly and making total water content be 12%-25%; 2. placing the paper pulp moulded product blank whose water content is regulated into the shaping mould on the special-purpose hydraulic press, heating and pressing the blank at 80-160 deg.C and 3Mpa-7Mpa so as to obtain the invented finished product.
Description
What pulp moulding product dry shaping process of the present invention related to is a kind of moulded paper pulp product blank dry shaping process method, is applicable to paper mould technology manufacturing tableware, part packaging for foodstuff utensil, part industrial and agricultural products packing container and disposable medical apparatus dry shaping.
The unit of development paper mould finely processed product and paper tableware comprises that offshore company all is the shaping process route that directly compresses heat drying behind the employing paper pulp molding in the paper pulp molding mould basically now, and this technology has following weak point:
(1) restricted in the form of paper pulp molding mould inner drying heating, all adopt electricity to be the energy, energy consumption cost height generally speaking.
(2) a large amount of water vapours generate from blank, mould structure must be considered the passage that water vapour is discharged, on a working face of mould, or lining net or making other exhaust passages all can make a surface of goods form reticulate pattern or other vestiges accordingly, influenced the outward appearance of product, limit the carrying out of further decoration, also increased the workload that the lining net consumed or cleared up passage.
(3) because the work period of each goods long (30～40 seconds) needs a large amount of mould turnovers, in case change kind, need to change a large amount of moulds, very flexible is difficult to adapt to market.
(4) difficulty of realization automatic continuous production is big, the cost height.
The objective of the invention is weak point at above-mentioned present moulded paper pulp product shaping process existence, a kind of pulp moulding product dry shaping process is provided, adopt new technology product of the present invention two sides bright and clean, the blank moisture content is low, the mold heated energy consumption is low, and each product pressing cycle is short, unit production efficiency height, labour intensity is low, is convenient to realize automated production.
Pulp moulding product dry shaping process takes following scheme to realize: the present invention on the paper mould technical foundation in addition infiltration and development form, with traditional paper mould process as the base process, the blank that makes is carried out the pressure finished machined, make goods have higher tightness, size and profile accurately, bright and clean level and smooth surface reaches the final requirement to goods.
The process of paper mould can be made the pulp goods of moulding in a large number in high efficiency mode, joins slurry, moulding, dry three operations through system, makes uniform specification, and tightness is 0.3 gram per centimeter
3About, surface ratio is more coarse and distortion is arranged slightly, and moisture content is at the moulded paper pulp product blank below 12%, and shape of products, size are determined by forming mould.
The pulp moulding product dry shaping process process is:
1, the moulded paper pulp product blank is carried out moisture content conditioning humidification or dehumidification, and in the inner evenly distribution of blank, total moisture content is 12%～25%,
2, on special hydraulic press, the moulded paper pulp product blank that moisture content was nursed one's health is packed in the shaping mould, the compacting of heating, under 80 ℃～160 ℃ temperature, pressure compacting blank with 3Mpa～7Mpa, and pressurize was taken out after 1～4 second in mould, and blank promptly is formed to goods, and the goods tightness is 0.5～0.7 gram per centimeter
3, the size profile is accurate, and any surface finish is level and smooth, and cutting burr just becomes final products.
Pulp moulding product dry shaping process is reasonable in design, methodological science is easy, adopt the moulded paper pulp product of manufacturing of the present invention to compare following major advantage with the moulded paper pulp product that conventional process techniques is produced: 1, the product two sides is bright and clean, die marks impression or printed decoration can be passed through in the surface, further improve the grade and the value of product.2, the blank moisture content is low, and the mold heated energy consumption is low.3, the pressing cycle of each product is 4～8 seconds.Unit production efficiency height, labour intensity is low, can also realize automated production after further improving.4, mould total amount much less, the ability that the conversion kind adapts to market is strong.International and domestic " white pollution " that foam plastic product is caused all begins to note and administer at present, and the moulded pulp set for dining that adopts manufacturing of the present invention is the best substitute that replaces foamed plastics system disposable tableware.
Embodiment 1:
To make good moulded pulp set for dining blank, tightness is 0.3 gram per centimeter
3Carrying out moisture content conditioning dehumidification makes moisture content in the inner evenly distribution of tableware blank, total moisture content is 12%, on special hydraulic press, with the compacting blank of heating in the shaping mould of packing into of the conditioned moulded pulp set for dining blank of moisture content, with the pressure compacting blank of 7Mpa, and pressurize was taken out after 1 second in mould under 160 ℃ temperature, blank promptly is formed to goods, and the goods tightness is 0.5 gram per centimeter
3, the size profile is accurate, and any surface finish is level and smooth, and cutting burr just becomes final products.
Embodiment 2:
To make good moulded pulp set for dining blank, tightness is 0.3 gram per centimeter
3Carrying out moisture content conditioning humidification makes moisture content in the inner evenly distribution of tableware blank, total moisture content is 18%, on special hydraulic press, with the compacting blank of heating in the shaping mould of packing into of the conditioned moulded pulp set for dining blank of moisture content, with the pressure compacting blank of 5Mpa, and pressurize was taken out after 3 seconds in mould under 120 ℃ temperature, blank promptly is formed to goods, and the goods tightness is 0.65 gram per centimeter
3, the size profile is accurate, and any surface finish is level and smooth, and cutting burr just becomes final products.
Embodiment 3:
To make good moulded pulp set for dining blank, tightness is 0.3 gram per centimeter
3Carrying out moisture content conditioning humidification makes moisture content in the inner evenly distribution of tableware blank, total moisture content is 25%, on special hydraulic press, with the compacting blank of heating in the shaping mould of packing into of the conditioned moulded pulp set for dining blank of moisture content, with the pressure compacting blank of 3Mpa, and pressurize was taken out after 4 seconds in mould under 8 ℃ temperature, blank promptly is formed to goods, and the goods tightness is 0.7 gram per centimeter
3, the size profile is accurate, and any surface finish is level and smooth, and cutting burr just becomes final products.
Tableware with the manufacturing of the invention described above new technology, for example the smooth and easy yield rate of instant noodle bowl manufacture process can reach more than 95%, the product that makes reaches the expection requirement fully, when on system face factory automatic packaging line, trying out, can not use because of reticulate pattern gas leakage with other product manufactured at all, and can normally use with the product of manufacturing of the present invention, any problem does not take place, with using of this technology manufacturing the product of decorative means and other product manufactured be not the product of same class fully.
Claims (2)
1, a kind of pulp moulding product dry shaping process is characterized in that technical process is:
(1), the moulded paper pulp product blank is carried out moisture content conditioning humidification or dehumidification, and evenly distribute in that blank is inner, total moisture content is 12%～25%,
(2), on special hydraulic press, the moulded paper pulp product blank that moisture content was nursed one's health is packed in the shaping mould, the compacting blank of heating, under 80 ℃～160 ℃ temperature, the pressure compacting blank with 3Mpa～7Mpa promptly is formed to goods.
2, pulp moulding product dry shaping process according to claim 1 is characterized in that the goods tightness that is processed into is 0.5～0.7 gram per centimeter
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98111532 CN1212311A (en) | 1998-10-12 | 1998-10-12 | Pulp moulding product dry shaping process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98111532 CN1212311A (en) | 1998-10-12 | 1998-10-12 | Pulp moulding product dry shaping process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1212311A true CN1212311A (en) | 1999-03-31 |
Family
ID=5221505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98111532 Pending CN1212311A (en) | 1998-10-12 | 1998-10-12 | Pulp moulding product dry shaping process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1212311A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086058A (en) * | 2017-12-13 | 2018-05-29 | 向孙团 | A kind of Novel plant fiber molds production technology |
| CN108947892A (en) * | 2018-07-02 | 2018-12-07 | 青岛科技大学 | One kind acrylonitrile compound containing bis trifluoromethyl and its application |
| CN112144319A (en) * | 2019-06-28 | 2020-12-29 | 常州万兴纸塑有限公司 | Paper pallet molding product and preparation process thereof |
-
1998
- 1998-10-12 CN CN 98111532 patent/CN1212311A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086058A (en) * | 2017-12-13 | 2018-05-29 | 向孙团 | A kind of Novel plant fiber molds production technology |
| CN108947892A (en) * | 2018-07-02 | 2018-12-07 | 青岛科技大学 | One kind acrylonitrile compound containing bis trifluoromethyl and its application |
| CN112144319A (en) * | 2019-06-28 | 2020-12-29 | 常州万兴纸塑有限公司 | Paper pallet molding product and preparation process thereof |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |