CN104610771B - A kind of plant fiber injection molded product and its manufacture method and application - Google Patents
A kind of plant fiber injection molded product and its manufacture method and application Download PDFInfo
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- CN104610771B CN104610771B CN201510092344.4A CN201510092344A CN104610771B CN 104610771 B CN104610771 B CN 104610771B CN 201510092344 A CN201510092344 A CN 201510092344A CN 104610771 B CN104610771 B CN 104610771B
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- string
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- plant fiber
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- molded product
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The present invention relates to a kind of plant fiber injection molded product and its manufacture method and application, belong to plant fiber injection molded product manufacture field, methods described comprises the following steps：1. string, glue, additive are mixed, obtains string batch mixing；2. mould is first warming up to 110~160 DEG C in 30s, string batch mixing is injected in the die cavity of mould again, 15~350MPa pressurizes, 3~5min, then mould is cooled to 50~80 DEG C in 30s, 15~350MPa pressurizes, 3~5min, mould is finally cooled to 10~30 DEG C in 30s, 10~15MPa pressurizes, 2~5min is depressurized to after 15~350MPa pressurizes, 3~5min, plant fiber injection molded product is obtained, the present invention has the beneficial effect that the plant fiber injection molded product surface of manufacture is smooth, cracking rate is low, bubble-free is produced.
Description
Technical field
The present invention relates to a kind of plant fiber injection molded product and its manufacture method and application, belong to string and project into
Type product manufacture field.
Background technology
Existing utilization ejection formed piece technology, its primary raw material source is thermoset plastic, thermoplastic shape at present in the whole world
Material or heat curing-type rubber, but plastics or rubber are difficult to be decomposed by the microorganisms, rot in natural environment or landfill,
A large amount of dense smokes and toxic gas can be produced again in burning incineration course, the various environmental pollutions such as air, soil, water source are caused,
And turn into environment environmental issue.
Additionally, the manufacture method of existing thermoplastic plastic ejection formed piece, all needs to utilize high temperature in batch mixing with when projecting
Plastics are made to maintain molten condition, so as in injecting die cavity, plastics gradually obtain ejection formed piece after cooling and shaping in the die cavity,
In order that plastics can be melted completely, project expects pipe and want continuous heating and to be maintained at more than 200 DEG C of high temperature, in die cavity, then
Must wait until that ejection formed piece is shaped and is cooled to below predetermined temperature completely could take out, in order to avoid ejection formed piece softening transform,
Make the manufacturing time of ejection formed piece long, therefore, existing thermoplastic ejection formed piece have material not environmentally, waste energy
The shortcomings of source, low manufacture efficiency, high cost；Same thermoset plastic and heat curing-type rubber ejection formed piece also have material not ring
The shortcomings of protecting, waste the energy, low manufacture efficiency, high cost.
In order to solve the problems, such as material not environmentally, although also have part daily living article with timber or paper pulp as raw material,
But existing timber and the wet type manufacture method of paper pulp, in addition to it must still cut down forest, can also discharge a large amount of papermaking wastewaters, to environment
Still can heavy damage, and cost cannot also reduce.
In addition, in order in response to ecological requirements, also there is the product with string as raw material in recent years, but such product system
Makes be that the major defect of hot-press molding method is not easy uniformly to cause product thickness not for pan feeding based on hot pressing mode shaping
Make deformation rate high and the product of special construction and shape cannot be molded, such as to manufacture special shape product must it is secondary or
Repeatedly processing, and have the low shortcoming of high cost, process efficiency, even with the product that the method for ejection formation is obtained
Be easily cracked, the rough or phenomenon that there is bubble to produce, and need secondary operation to increase cost, reduce efficiency.
In view of this, at present except still needing to be devoted to original of the various natural agricultural wastes of exploitation as various life products
Material is stressed outside environmental protection with saving cost of material, in order to further lift Related product quality, increase shape of product diversification and change
Kind manufacture efficiency, still has Persisting exploitation and improves the demand of manufacture method, and meet the national policy of environmental protection.
The content of the invention
The present invention makes the string of its manufacture when plant fiber injection molded product is manufactured by the way of rapid heat cycle
Ejection formed piece surface is smooth, no cracking and bubble, reduces the cost of secondary operation.
The invention provides a kind of manufacture method of plant fiber injection molded product, the manufacture method includes following step
Suddenly：
1. dispensing：String, glue, additive are mixed, string batch mixing is obtained；
2. ejection formation：Mould is first warming up to 110~160 DEG C using rapid heat cycle gloss mold temperature controller high in 30s, then will
String batch mixing is injected in the die cavity of mould using 15~350MPa pressure, 15~350MPa, 3~5min of pressurize, then by mould
Tool is cooled to 50~80 DEG C, 15~350MPa, 3~5min of pressurize, finally by mould using rapid heat cycle gloss mold temperature controller high in 30s
Tool is cooled to -10~30 DEG C again using rapid heat cycle gloss mold temperature controller high in 30s, is dropped after 15~350MPa pressurizes, 3~5min
10~15MPa, 2~5min of pressurize are depressed into, plant fiber injection molded product is obtained.
The device of present invention manufacture plant fiber injection molded product preferably comprises storage vat, binder cylinder, cooler, material
Manage, penetrate head, mould, rapid heat cycle gloss mold temperature controller high, evacuator, the discharging opening of the storage vat connects with the charging aperture of binder cylinder
Connect, the binder cylinder is connected with cooler, the binder cylinder is provided with for material to be pressed into strip and the screw rod of expects pipe is squeezed into, institute
State the discharging opening of binder cylinder to be connected with the feeding mouth of expects pipe, the discharging opening of the expects pipe is connected with head is penetrated, described to penetrate head and mould
Connection, the mould is connected with rapid heat cycle gloss mold temperature controller high, and the mould is connected with evacuator.
Mould of the present invention is more preferably that, with TOP-TIP, the hot nozzle of mould is provided with several envelope pins, often
Individual hot nozzle is provided with independent air flue, and feed time and the charging of each hot nozzle are individually controlled by magnetic valve and the time relay
Amount.
Rapid heat cycle gloss mold temperature controller high of the present invention is more preferably have heating, cooling, cold and hot conversion and control work(
Liquid, cooling liquid recovery system and can be heated, the heating liquid and cooling liquid are preferably silicone oil or water.
String of the present invention is preferably husk fiber, stalk fibrid, waste residue fiber and starch fiber
In at least one.
Husk fiber of the present invention is preferably in rice husk, wheat husk, sorghum husk, peanut shell, beanpod and cocoanut shell extremely
Few one kind.
Stalk fibrid of the present invention is preferably in rice straw, straw, cornstalk, sorghum stalk, beans stalk, cotton stalk and reed
It is at least one.
Waste residue fiber of the present invention is preferably wood chip, bamboo scraps, corn ear slag, bagasse, soybean residue, beer residue and beans
At least one in slag.
Starch fiber of the present invention is preferably cornstarch, dehydrated potato powder, tapioca starch, soy meal, bajiao banana powder, taro powder
With at least one in acorn nut powder.
String of the present invention belongs to agricultural wastes, cheap and easily-available, and species extensively, can be according to various regions resource situation
And season, different raw materials being chosen, can be decomposed in natural environment using the product manufactured by string of the present invention, accord with
Cyclization guaranteed request.
The granularity of string of the present invention is preferably 40~120 mesh.
When the granularity of string of the present invention is more than 120 mesh, cause string mobility in glue poor, easily
Agglomeration is produced, although the product surface of manufacture is more smooth, structural strength is deteriorated with physical property；String of the present invention
Granularity be less than 40 mesh when, then need to take more time to be processed with program, increase manufacturing cost.
Glue of the present invention is preferably latex, pectin, protein adhesive, melamine glue, phenolic resin glue and Lauxite
At least one in glue.
Additive of the present invention is preferably the mixture of cornstarch, sulfate and stearic acid.
Sulfate of the present invention is preferably barium sulfate, ferric sulfate, zinc sulfate, manganese sulfate or chromium sulfate.
Stearic acid of the present invention is preferably hard magnesium, calcium stearate, zinc stearate, stearic acid aluminium or stearic acid
Barium.
Additive of the present invention, preferably by mass percentage, is made up of following components：
Cornstarch 40~60%
Sulfate 20~40%
Stearic acid 10~30%.
String batch mixing of the present invention, preferably by mass percentage, is made up of following components：
String 45~70%
Glue 10~35%
Additive 15~25%.
The moisture content of string batch mixing of the present invention is preferably 30~50wt%.
Temperature of the string batch mixing of the present invention before die cavity is injected is preferably not higher than 58 DEG C, specifically from dispensing
Control temperature to be not higher than 58 DEG C to before injecting die cavity, make string batch mixing avoid the moisture that frictional heat is caused from reducing and shift to an earlier date
Produce chemical reaction.
String batch mixing of the present invention is preferably while die cavity is injected and die cavity is vacuumized, and mixes string
Expect uniformly to fill up die cavity, accelerate to exclude hot gas moisture, improve shaping speed, stabilized product quality and reduction fraction defective.
Mould intracavity wall of the present invention is preferably and is provided with aluminium alloy, is conducive to the rapid temperature rise and drop to string batch mixing.
The purpose of another aspect of the present invention is that the string that the manufacture method described in offer the invention described above is obtained is penetrated
Go out products formed.
The purpose of another aspect of the invention be provide the invention described above described in plant fiber injection molded product in funeral and interment
Application in articles for use, furniture or building materials.
The present invention has the beneficial effect that：
1. the present invention is manufactured by rapid heat cycle mode plant fiber injection molded product surface is smooth, cracking rate is low, nothing
Bubble produces, reduces the cost of secondary operation, specially cracking rate 0.02%, bubble formation rate 0%；And plant of the prior art
Fibres ejection formed piece is because without being manufactured using rapid heat cycle mode, cracking rate is 20%, and bubble formation rate is
5%；The hot-forming product cracking rate of string of the prior art is 30%, and bubble formation rate is 10%；
2. plant fiber injection molded product density produced by the present invention is big, water absorption is low, the function with waterproof.
Brief description of the drawings
The width of accompanying drawing of the present invention 9,
Fig. 1 is the structural representation of the vertical ejection forming machine with rapid heat cycle function；
Fig. 2 is the structural representation of the Horizontal Projecting Make-up Machine with rapid heat cycle function；
Wherein, 1, storage vat, 2, binder cylinder, 21, screw rod, 3, cooler, 4, project bar, 5, expects pipe, 6, penetrate head, 7, mould
Tool, 71, die cavity, 72, die wall, 8, rapid heat cycle gloss mold temperature controller high, 9, evacuator.
Fig. 3 is the smooth design sketch without cracking bubble-free string cinerary casket in surface of the manufacture of the embodiment of the present invention 1；
Fig. 4 is the design sketch of the string cinerary casket cracking of prior art manufacture；
Fig. 5 is the amplification effect figure of the string cinerary casket cracking of prior art manufacture；
Fig. 6 is the design sketch that the string cinerary casket that prior art is manufactured has arc bubble；
Fig. 7 is the amplification effect figure that the string cinerary casket that prior art is manufactured has arc bubble；
Fig. 8 is the design sketch that the string cinerary casket that prior art is manufactured has non-arc bubble；
Fig. 9 is the amplification effect figure that the string cinerary casket that prior art is manufactured has non-arc bubble.
Specific embodiment
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Embodiment 1
A kind of manufacture method of string cinerary casket, the manufacture method comprises the following steps：
1. dispensing：By string, 30% glue and 25% additive that mass percent is 45% in batch mixer
Middle mixing, mixing temperature is not higher than 58 DEG C, obtains string batch mixing；
The string is the mixture of rice husk and straw, and the granularity of the string is 40~120 mesh, the glue
Water is melamine glue, and the additive is that cornstarch that mass percent is 50%, 30% barium sulfate is hard with 20%
The mixture of resin acid calcium；
2. ejection formation：String batch mixing is added in storage vat, string batch mixing enters binder in storage vat
After cylinder, strip is pressed into by the screw rod of binder cylinder and is squeezed into expects pipe, binder temperature is not higher than 58 DEG C, mould is utilized into chilling urgency
Heat gloss mold temperature controller high is warming up to 160 DEG C in 30s, and string batch mixing in expects pipe is shot material pressure using bar is projected with 15MPa
Inject 15MPa pressurizes 3min in the die cavity of mould by penetrating first time property, by mould using rapid heat cycle gloss mold temperature controller high in 30s
50 DEG C are cooled to, mould is cooled to 10 DEG C by 15MPa pressurize 3min again using rapid heat cycle gloss mold temperature controller high in 30s,
10MPa pressurize 3min are depressurized to after 15MPa pressurizes 3min, residual heat air-blowing is walked after opening mould, string bone ash is obtained
Box.The physical property of the string cinerary casket that test is obtained, the results are shown in Table 1.
The physical property of the string cinerary casket of the manufacture of 1 embodiment of table 1
| Pilot project | Test method | Result of the test |
| CNS 451(2005)Modified | 1.31 | |
| Moisture content (%) | CNS 452(2005)Modified | 20.65 |
| CNS 453(2005)Modified | 317 | |
| CNS 454(2005)Modified | 54.4 | |
| Full shrinkage factor (%) | CNS 459(2005)Modified | 2.98 |
| CNS 6714(2005)Modified | 0.02 | |
| Calorific value (kcal/kg) | ASTM D240(2002)Modified | 3362 |
Claims (9)
1. a kind of manufacture method of plant fiber injection molded product, it is characterised in that：The manufacture method comprises the following steps：
1. dispensing：String, glue, additive are mixed, string batch mixing is obtained, the granularity of the string is 40
~120 mesh；
2. ejection formation：Mould is first warming up to 110~160 DEG C using rapid heat cycle gloss mold temperature controller high in 30s, then by plant
Fiber batch mixing is injected in the die cavity of mould using 15~350MPa pressure, 15~350MPa, 3~5min of pressurize, then by mould profit
50~80 DEG C, 15~350MPa, 3~5min of pressurize, finally by mould profit are cooled in 30s with rapid heat cycle gloss mold temperature controller high
- 10~30 DEG C are cooled to again in 30s with rapid heat cycle gloss mold temperature controller high, be depressurized to after 15~350MPa pressurizes, 3~5min
10~15MPa, 2~5min of pressurize, obtain plant fiber injection molded product, and the mould intracavity wall is provided with aluminium alloy.
2. manufacture method according to claim 1, it is characterised in that：The glue is latex, pectin, protein adhesive, trimerization
At least one in cyanamide glue, phenolic resin glue and urea-formaldehyde resin adhesive.
3. manufacture method according to claim 1, it is characterised in that：The additive be cornstarch, sulfate with it is hard
The mixture of resin acid class, the stearic acid is hard magnesium, calcium stearate, zinc stearate, stearic acid aluminium or hard barium.
4. manufacture method according to claim 1, it is characterised in that：The additive, by mass percentage, by following groups
It is grouped into：
Cornstarch 40~60%
Sulfate 20~40%
Stearic acid 10~30%；
The stearic acid is hard magnesium, calcium stearate, zinc stearate, stearic acid aluminium or hard barium.
5. manufacture method according to claim 1, it is characterised in that：The string batch mixing, by mass percentage, by
Following component compositions：
String 45~70%
Glue 10~35%
Additive 15~25%.
6. manufacture method according to claim 1, it is characterised in that：The moisture content of the string batch mixing be 30~
50wt%.
7. manufacture method according to claim 1, it is characterised in that：Temperature of the string batch mixing before die cavity is injected
Not higher than 58 DEG C of degree.
8. the plant fiber injection molded product that the manufacture method described in claim 1 is obtained.
9. application of the plant fiber injection molded product described in claim 8 in funeral and interment articles for use, furniture or building materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092344.4A CN104610771B (en) | 2015-02-27 | 2015-02-27 | A kind of plant fiber injection molded product and its manufacture method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092344.4A CN104610771B (en) | 2015-02-27 | 2015-02-27 | A kind of plant fiber injection molded product and its manufacture method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104610771A CN104610771A (en) | 2015-05-13 |
| CN104610771B true CN104610771B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510092344.4A Expired - Fee Related CN104610771B (en) | 2015-02-27 | 2015-02-27 | A kind of plant fiber injection molded product and its manufacture method and application |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107586462A (en) * | 2017-09-14 | 2018-01-16 | 贵州思特技术有限公司 | Mechanograph and preparation method thereof |
| CN110526676A (en) * | 2019-07-03 | 2019-12-03 | 浙江祥泰礼仪服务有限公司 | A kind of manufacturing process of cinerary casket |
| CN112356213A (en) * | 2020-11-11 | 2021-02-12 | 浙江农林大学暨阳学院 | Method for manufacturing bamboo fiber elastic cushion |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521093A (en) * | 2003-01-31 | 2004-08-18 | 杨国桢 | Environmental protection pallet and display board made of plant fibres and their making methods |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884381A (en) * | 2006-07-03 | 2006-12-27 | 汪愿望 | Environment-friendly craft material and its moulding process |
| CN101871190B (en) * | 2010-04-19 | 2011-09-07 | 杨国桢 | Method for manufacturing plant fiber injection molded product |
| TWI574818B (en) * | 2011-02-24 | 2017-03-21 | 遠東科技大學 | The method of controlling the surface smoothness of the plastic added to the plant fiber during injection molding |
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- 2015-02-27 CN CN201510092344.4A patent/CN104610771B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521093A (en) * | 2003-01-31 | 2004-08-18 | 杨国桢 | Environmental protection pallet and display board made of plant fibres and their making methods |
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Effective date of registration: 20180611 Address after: 115000 China (Liaoning) free trade pilot area, Bohai 97 West 403, Yingkou Patentee after: Liaoning Dehui Technology Co.,Ltd. Address before: 116000 1802, 81 unit 1, North Garden Garden, Huida garden, Ganjingzi District, Dalian, Liaoning. Patentee before: Yang Guozhen |
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Address after: 115000 Qinghua Street West 63, Xishi District, Yingkou, Liaoning Patentee after: Liaoning Dehui Technology Co.,Ltd. Address before: China (Liaoning) free trade trial area Yingkou 97 Bohai Street West No. 403 Patentee before: Liaoning Dehui Technology Co.,Ltd. |
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Granted publication date: 20170616 |