CN1974154A - Process of making molded tray - Google Patents
Process of making molded tray Download PDFInfo
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- CN1974154A CN1974154A CN 200610098335 CN200610098335A CN1974154A CN 1974154 A CN1974154 A CN 1974154A CN 200610098335 CN200610098335 CN 200610098335 CN 200610098335 A CN200610098335 A CN 200610098335A CN 1974154 A CN1974154 A CN 1974154A
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- plant
- mold pressing
- plant material
- lower mould
- make
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Abstract
The present invention relates to molded product, and is especially process of making molded tray. The present invention has the molded tray made with tree branches and timber leftover as well as other annual and perennial plant material. The present invention has saving in timber resource, high tray quality, low power consumption and low production cost.
Description
Technical field:
The present invention relates to the forming method of pressing, particularly relate to the forming method of molded tray.
Background technology:
Pallet is important physical distribution apparatus, is to make static goods change the carrier of dynamic goods into, plays irreplaceable effect in the modern logistics system.
At present the side go up the solid wood pallet used and wood-base fibre and particle panel material piece together the nail pallet exist consume forest reserves amount big, disease and pest, shortcoming that cost is high arranged.Application number is 200510048717.4 Chinese invention patent ublic specification of application, a kind of manufacturing technique method of wood particle-moulding tray is disclosed, but the temperature process condition of this process, not only bad for energy savings, and be unfavorable for the equilibrium of material is heated, its higher hot pressing temperature also can cause solidifies sizing material because of overheated and aging, thereby influences the quality of pallet.
At the shortcoming of the method for above-mentioned technology, the present invention proposes a kind of manufacturing process of molded tray, when effectively improving the molded tray quality, saves heat energy.In addition, the present invention can also be applicable to 1 year or the perennial plant raw material, further reduces production costs, and saves timber resources.
Summary of the invention:
Technology of the present invention is:
A kind of method of making molded tray is characterized in that, comprises the steps:
(1) with the plant material drying;
(2) in dried plant material, add the sizing material and the formation mold pressing material that stirs;
(3) heat upper and lower mould, make them be in essentially identical temperature levels between 150-170 ℃, the mold pressing material is mated formation in the upper and lower mould of heating, make upper and lower mould closure, and the pressure that imposes 3.5～6.0Mpa carries out mold pressing, pressurize 4-6min.
Aforesaid plant material can be a timber, or bamboo wood, or plant stalk.
Aforesaid timber, or bamboo wood, or plant stalk is made into wood wool respectively, or the bamboo silk, or fibre bundle.
If choosing timber makes wood wool, then it is of a size of: length＜8-20mm, width＜3mm, thickness＜1mm;
If choosing bamboo wood makes the bamboo silk, then it is of a size of: length＜10-25mm, width＜2mm, thickness＜1mm;
If choose plant stalk, the form of plant stalk is fiber and fibre bundle.
Select the upper and lower mould of heating, make them be in essentially identical temperature levels between 150-170 ℃, the mold pressing material is contained in the upper and lower mould of heating, upper and lower mould closure, and the pressure that imposes 3.5～6.0Mpa carries out mold pressing, pressurize 4-6min can effectively satisfy the curing needs of glue in the mold pressing material, can fully satisfy the requirement that makes the moulding of mold pressing material compacting again.By adjustment and relative equilibrium control to upper and lower mold temperature, than existing mould pressing process, not only more accurately practical to the temperature control of compression molding, and realize preferably the harmony of material is heated, and the abundant energy savings of energy, further reduce production costs, more can effectively prevent of the infringement of higher temperature, thereby improved the quality of pallet the glue after solidifying.
Suitably the mold pressing material of form has significance for the manufacturing of molded tray, the plant of choosing above-mentioned numerical value or form is the mold pressing material, can make the glue mixing of mold pressing material more even, also make the mold pressing material have certain specific area, and satisfy mold pressing and add mold pressing in man-hour material one constant current malleability is arranged, satisfy the requirement of pallet moulding pressing.
According to technical scheme of the present invention, when making plant material dry, should make moisture content＜3 ± 0.5% of dried plant material.Select the control criterion of this moisture content, in the time of will making the compression molding of mold pressing material, effectively avoid moisture content on the low side, make plant material inhale glue in a large number, cause plant material surface starved and influence bonding strength.Also avoid moisture content higher, layering and bulge phenomenon take place when mold pressing.
According to technical solutions according to the invention, the applied amount that adds sizing material in plant material should be the 14%-15% of over dry plant material weight.Select the resin added of this ratio, can satisfy the basic demand of the certain cementing strength of needs after the plant material compression molding, can satisfy few glue of using again, the operating requirement that reduces production costs.
The plant material that the present invention is selected not only obtains easily, and cheap, but also twice laid effectively saves production cost.
The specific embodiment:
Embodiment 1:
Plant material is chosen the wood wool that timber is made, and it is of a size of: length＜8-20mm, width＜3mm, thickness＜1mm.With this wood wool plant material drying, make its moisture content＜3 ± 0.5%, add 15% urea-formaldehyde glue, stirring forms the mold pressing material.Heat upper and lower mould, make them be in 170 ℃ temperature levels, the mold pressing material is mated formation in the molding die of heating.Make upper and lower mould closure, and the pressure that imposes 4.5Mpa carries out mold pressing, pressurize 4min makes its moulding.
Embodiment 2:
Plant material is chosen the bamboo silk that bamboo wood is made, and it is of a size of: length＜20-25mm, width＜2mm, thickness＜1mm.With this bamboo silk plant material drying, make its moisture content＜3 ± 0.5%, add 14% urea-formaldehyde glue, stirring forms the mold pressing material.Heat upper and lower mould, make them be in 165 ℃ temperature levels, the mold pressing material is mated formation in molding die.Make upper and lower mould closure, and the pressure that imposes 6.0Mpa carries out mold pressing, make material heart layer temperature reach 100 ℃, pressurize 5min makes its moulding.
Embodiment 3:
Plant material is chosen the plant fasciculus that plant stalk is made.With the plant fasciculus raw material drying, make its moisture content＜3 ± 0.5%, add 15% urea-formaldehyde glue, stirring forms the mold pressing material.Heat upper and lower mould, make them be in 150 ℃ temperature levels, the mold pressing material is mated formation in molding die.Make upper and lower mould closure, and the pressure that imposes 5.0Mpa carries out mold pressing, pressurize 6min makes its moulding.
Claims (6)
1, a kind of method of making molded tray is characterized in that, comprises the steps:
(1) with the plant material drying;
(2) in dried plant material, add the sizing material and the formation mold pressing material that stirs;
(3) heat upper and lower mould, make them be in essentially identical temperature levels between 150-170 ℃, the mold pressing material is mated formation in the upper and lower mould of heating, make upper and lower mould closure, and the pressure that imposes 3.5～6.0Mpa carries out mold pressing, pressurize 4-6min.
2, manufacture method according to claim 1, its plant material are timber, or bamboo wood, or plant stalk.
3, manufacture method according to claim 2 is characterized in that, its timber, or bamboo wood, or plant stalk is made into wood wool respectively, or the bamboo silk, or fibre bundle.
4, according to claim 2 or 3 described manufacture methods, it is characterized in that its wood wool is of a size of: length＜8-20mm, width＜3mm, thickness＜1mm; Its bamboo silk is of a size of: length＜20-25mm, width＜2mm, thickness＜1mm; Its plant stalk is made fibre bundle.
5, manufacture method according to claim 1 is characterized in that, dried plant material moisture content 3 ± 0.5%.
6, manufacture method according to claim 1 is characterized in that, adds sizing material at plant material, and the solid content of sizing material is 60-65%, and its resin added is 14%～15% of an over dry plant material weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610098335 CN1974154A (en) | 2006-12-12 | 2006-12-12 | Process of making molded tray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610098335 CN1974154A (en) | 2006-12-12 | 2006-12-12 | Process of making molded tray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1974154A true CN1974154A (en) | 2007-06-06 |
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ID=38124646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610098335 Pending CN1974154A (en) | 2006-12-12 | 2006-12-12 | Process of making molded tray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1974154A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089693A1 (en) * | 2008-01-16 | 2009-07-23 | Zhang, Cuilan | Bidirectional pressing method and apparatus for forming plant fiber pallet |
| CN101298158B (en) * | 2008-04-18 | 2010-06-16 | 张翠兰 | Plant fibre pallet double-press pressing method and apparatus equipped with pressure maintaining device |
| CN102268848A (en) * | 2011-04-26 | 2011-12-07 | 杭州绿宝纸制品有限公司 | Process for producing logistics tray |
| CN106142281A (en) * | 2015-04-14 | 2016-11-23 | 东台市久胜环美农副产品有限公司 | A kind of preparation method of paper tube stopper |
| CN107363674A (en) * | 2017-06-14 | 2017-11-21 | 杭州沛诺包装科技有限公司 | The processing method of the molded tray of material based on a kind of mixing wood shavings by bamboo and wood |
-
2006
- 2006-12-12 CN CN 200610098335 patent/CN1974154A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089693A1 (en) * | 2008-01-16 | 2009-07-23 | Zhang, Cuilan | Bidirectional pressing method and apparatus for forming plant fiber pallet |
| CN101298158B (en) * | 2008-04-18 | 2010-06-16 | 张翠兰 | Plant fibre pallet double-press pressing method and apparatus equipped with pressure maintaining device |
| CN102268848A (en) * | 2011-04-26 | 2011-12-07 | 杭州绿宝纸制品有限公司 | Process for producing logistics tray |
| CN102268848B (en) * | 2011-04-26 | 2013-04-03 | 杭州绿宝纸制品有限公司 | Process for producing logistics tray |
| CN106142281A (en) * | 2015-04-14 | 2016-11-23 | 东台市久胜环美农副产品有限公司 | A kind of preparation method of paper tube stopper |
| CN107363674A (en) * | 2017-06-14 | 2017-11-21 | 杭州沛诺包装科技有限公司 | The processing method of the molded tray of material based on a kind of mixing wood shavings by bamboo and wood |
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Open date: 20070606 |