CN111910472A - Egg tray forming and drying method - Google Patents
Egg tray forming and drying method Download PDFInfo
- Publication number
- CN111910472A CN111910472A CN202010725499.8A CN202010725499A CN111910472A CN 111910472 A CN111910472 A CN 111910472A CN 202010725499 A CN202010725499 A CN 202010725499A CN 111910472 A CN111910472 A CN 111910472A
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- Prior art keywords
- drying
- dehumidification
- egg tray
- cavity
- drying method
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- 238000001035 drying Methods 0.000 title claims abstract description 93
- 238000007791 dehumidification Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000000047 product Substances 0.000 claims abstract description 17
- 239000011265 semifinished product Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims description 7
- 238000010981 drying operation Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
- D21J3/10—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of hollow bodies
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to the field of paper-plastic production equipment, in particular to an egg tray forming and drying method which is used for drying wet paper-plastic blanks and is realized based on drying equipment with a double-layer structure, wherein a dehumidification cavity is arranged on the upper layer of the drying equipment, and a drying cavity is arranged on the lower layer of the drying equipment; the drying method comprises the following steps: a dehumidification process and a drying process, wherein in the dehumidification process, the wet paper-plastic blank is shaped, preheated and dehumidified in hot air in a dehumidification cavity at the dehumidification temperature of 30-120 ℃ for 2-3 minutes to reduce the moisture to 50-80%; and a drying process, drying the semi-finished product subjected to the dehumidification process in hot air in a drying cavity, wherein the drying temperature is 85-150 ℃, and keeping for 12-18 minutes until the moisture content reaches 3-7%, so that the egg tray product is obtained. The method is simple and convenient to implement, is beneficial to realizing the mechanized production process of products, ensures the stable quality and drying efficiency of the products, and has strong popularization and application values.
Description
Technical Field
The invention relates to the field of paper-plastic production equipment, in particular to an egg tray forming and drying method.
Background
The paper pulp molding is to mold paper products with certain specifications and shapes, such as egg trays and the like, by using waste paper as a raw material on a molding machine through a characteristic mold, has the advantages of wide and easily available raw materials, recycling, no pollution to the environment in the production process and the like, and the manufacturing process comprises the working procedures of pulping, molding, drying and shaping and the like. The existing enterprises generally carry out the forming and drying qualitative separately, namely the slurry is pressed and formed by manpower after being made into slurry and is sent into a drying chamber for drying through a transfer cart. In the traditional process, external natural wind or drying in a heating furnace is mostly utilized, and because the moisture content of the wet blank of the egg support semi-finished product is too high, a long time is needed, the yield is influenced, the drying cost is high, and the efficiency is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the egg tray forming and drying method which is simple in process, convenient to realize and capable of improving the drying efficiency and the product yield.
According to the design scheme provided by the invention, the egg tray forming and drying method is used for drying paper-plastic wet blanks and is realized based on a drying device with a double-layer structure, wherein a dehumidification cavity is arranged on the upper layer of the drying device, and a drying cavity is arranged on the lower layer of the drying device; the drying method comprises the following steps: a dehumidification process and a drying process, wherein,
a dehumidification process, in which the wet paper-plastic blank is shaped, preheated and dehumidified in hot air in a dehumidification cavity, the dehumidification temperature is 30-120 ℃, and the temperature is kept for 2-3 minutes, so that the moisture is reduced to 50-80%;
and a drying process, drying the semi-finished product subjected to the dehumidification process in hot air in a drying cavity, wherein the drying temperature is 85-150 ℃, and keeping for 12-18 minutes until the moisture content reaches 3-7%, so that the egg tray product is obtained.
As the egg tray forming and drying method, the drying equipment further conveys the wet paper plastic blank from the feeding hole of the drying equipment to the discharging hole of the drying equipment through the multi-stage chain conveyer belt, and the finished product shaping and drying operation in the conveying process is completed.
As the egg tray forming and drying method, further, the multi-stage chain conveyer belt advances at a constant speed in the conveying process, and the dehumidifying and drying holding time is adjusted by controlling the advancing speed.
As the egg tray forming and drying method, a heat source in the dehumidifying cavity is supplied by a dehumidifier and/or a solar air heat collector.
As the egg tray forming and drying method, further, a heat source in the drying cavity is supplied by a dryer and/or a solar air heat collector.
The invention has the beneficial effects that:
the drying method is simple and convenient to realize, is beneficial to realizing the mechanized production process of products, ensures the stable quality and the drying efficiency of the products, and has stronger popularization and application values.
Description of the drawings:
FIG. 1 is a schematic diagram of the dehumidifying and drying conveying process in the embodiment.
In the figure, reference numeral 1 denotes a drying apparatus, reference numeral 2 denotes a dehumidifying chamber, and reference numeral 3 denotes a drying chamber.
The specific implementation mode is as follows:
the present invention will be described in further detail below with reference to the accompanying drawings and technical solutions, and embodiments of the present invention will be described in detail by way of preferred examples, but the embodiments of the present invention are not limited thereto.
The embodiment of the invention, as shown in fig. 1, provides an egg tray forming and drying method, which is used for drying paper-plastic wet blanks and is realized based on a drying device 1 with a double-layer structure, wherein a dehumidification cavity 2 is arranged on the upper layer of the drying device 1, and a drying cavity 3 is arranged on the lower layer; the drying method comprises the following steps: a dehumidification process and a drying process, wherein,
a dehumidification process, in which the wet paper-plastic blank is shaped, preheated and dehumidified in hot air in a dehumidification cavity 2, the dehumidification temperature is 30-120 ℃, and the dehumidification temperature is kept for 2-3 minutes, so that the moisture is reduced to 50-80%;
and a drying procedure, namely drying the semi-finished product subjected to the dehumidification procedure in hot air in the drying cavity 3, wherein the drying temperature is 85-150 ℃, and keeping for 12-18 minutes until the moisture content reaches 3-7%, so that the egg tray product is obtained.
The method is simple, convenient to realize and control, beneficial to realizing the mechanized production process of the product, and capable of ensuring the stable quality and the drying efficiency of the product.
As an egg tray forming and drying method in the embodiment of the invention, further, referring to fig. 1, a drying device 2 conveys a wet paper plastic blank from a feeding port of the drying device to a discharging port of the drying device through a multi-stage chain conveyor belt to finish the finished product shaping and drying operation in the conveying process, and the egg tray forming and drying method is simple in structure, compact, convenient to implement and small in occupied area. Furthermore, the multi-stage chain conveyer belt advances at a constant speed in the conveying process, and the dehumidifying and drying holding time is adjusted by controlling the advancing speed. Further, the heat source in the dehumidification chamber 2 is supplied by a dehumidifier and/or a solar air heat collector. Further, the heat source in the drying chamber 3 is supplied by a dryer and/or a solar air collector.
A solar collector is a device for converting solar radiation energy into heat energy, and the solar collector is a key part of various solar utilization devices because of the relatively dispersed solar energy. The collectors on the market today consist of collecting and absorbing devices by absorbing solar radiation and transferring the generated thermal energy to a heat transfer medium. In the embodiment of the invention, the solar air heat collector which can be directly purchased in the market can be utilized to send air into the dehumidifying cavity and/or the drying cavity as a heat transfer medium, so that the dehumidifying and drying operation of products on stations can be conveniently carried out, the influence of external environmental factors can be reduced, and the production operation requirement can be ensured. Under the conditions of weather factors or dryer/dehumidifier faults and the like, the solar air heat collector can be used for dehumidifying and drying heat source supply, the smooth proceeding of the drying process in product operation is ensured, energy is saved, emission is reduced, and better social image and economic value can be brought to enterprises.
The present invention is not limited to the above-described embodiments, and various changes may be made therein by those skilled in the art, but any changes equivalent or similar to the present invention are intended to be included within the scope of the claims of the present invention.
The term "and/or" herein means that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above and various combinations of the technical features and structures proposed by the present invention may be made without departing from the concept of the present invention, and the scope of the present invention is defined by the appended claims. The foregoing description of specific exemplary embodiments of the invention is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. An egg tray forming and drying method is used for drying egg tray paper plastic wet blanks and is characterized in that drying equipment is arranged on the basis of a double-layer structure, a dehumidification cavity is arranged on the upper layer of the drying equipment, and a drying cavity is arranged on the lower layer of the drying equipment; the drying method comprises the following steps: a dehumidification process and a drying process, wherein,
a dehumidification process, in which the wet paper-plastic blank is shaped, preheated and dehumidified in hot air in a dehumidification cavity, the dehumidification temperature is 30-120 ℃, and the temperature is kept for 2-3 minutes, so that the moisture is reduced to 50-80%;
and a drying process, drying the semi-finished product subjected to the dehumidification process in hot air in a drying cavity, wherein the drying temperature is 85-150 ℃, and keeping for 12-18 minutes until the moisture content reaches 3-7%, so that the egg tray product is obtained.
2. The egg tray molding and drying method according to claim 1, wherein the drying device conveys the wet paper plastic blank from the feeding port of the drying device to the discharging port of the drying device through a multi-stage chain conveyor belt, so as to finish the finished product shaping and drying operation in the conveying process.
3. The egg tray molding and drying method according to claim 2, wherein the multi-stage chain conveyor belt advances at a constant speed during the conveying process, and the dehumidifying and drying holding time is adjusted by controlling the advancing speed.
4. The egg tray molding and drying method according to claim 1, wherein the heat source in the dehumidifying cavity is supplied by a dehumidifier and/or a solar air collector.
5. The egg tray molding and drying method according to claim 1, wherein the heat source in the drying chamber is supplied by a dryer and/or a solar air collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725499.8A CN111910472A (en) | 2020-07-24 | 2020-07-24 | Egg tray forming and drying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725499.8A CN111910472A (en) | 2020-07-24 | 2020-07-24 | Egg tray forming and drying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111910472A true CN111910472A (en) | 2020-11-10 |
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ID=73280264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010725499.8A Pending CN111910472A (en) | 2020-07-24 | 2020-07-24 | Egg tray forming and drying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111910472A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105558A (en) * | 1991-03-28 | 1992-04-21 | Curry Donald P | Apparatus and process for drying cellulosic and textile substances with superheated steam |
| CN103743212A (en) * | 2013-12-27 | 2014-04-23 | 青岛市汇宇纸塑制品有限公司 | Waste heat energy saving automatic humidification and drying line |
-
2020
- 2020-07-24 CN CN202010725499.8A patent/CN111910472A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105558A (en) * | 1991-03-28 | 1992-04-21 | Curry Donald P | Apparatus and process for drying cellulosic and textile substances with superheated steam |
| CN103743212A (en) * | 2013-12-27 | 2014-04-23 | 青岛市汇宇纸塑制品有限公司 | Waste heat energy saving automatic humidification and drying line |
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Application publication date: 20201110 |