CN102198450A - Cleaning method - Google Patents
Cleaning method Download PDFInfo
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- CN102198450A CN102198450A CN201110078226XA CN201110078226A CN102198450A CN 102198450 A CN102198450 A CN 102198450A CN 201110078226X A CN201110078226X A CN 201110078226XA CN 201110078226 A CN201110078226 A CN 201110078226A CN 102198450 A CN102198450 A CN 102198450A
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- sleeve
- cleaning
- skin
- screw rod
- core structure
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Abstract
The invention relates to a cleaning method, particularly relates to a method for cleaning a screw and a sleeve, and specifically relates to a cleaning method using coated wire woven cloth of an oblong skin core structure made of a coated wire of a skin core structure, the melting point of the skin layer of which is lower than that of the core layer. The cleaning method comprises the following steps of: heating the screw and the sleeve of an extruder, adding a cleaning raw material into the sleeve, operating a main machine, and continuously discharging the cleaning raw material in the sleeve, wherein the cleaning raw material is the oblong woven cloth prepared from the thermoplastic resin coated wire of the skin core structure, the melting point of the skin layer material of the thermoplastic resin coated wire of the skin core structure is lower than that of the core layer material, and the heating temperature of the sleeve is between the melting point of the skin layer material and the melting point of the core layer material. By the method, the cleaning effect is greatly improved, the cleaning time is reduced, a large amount of materials and energy are saved, and the cleaning cost of an enterprise is greatly reduced.
Description
Technical field
The present invention relates to a kind of cleaning method, particularly relate to a kind of method of cleaning screw rod and sleeve, specifically a kind of cleaning method of covering thread woven cloth of the thread oblong-shaped skin-core structure of coating that adopts the skin-core structure that the cortex fusing point is lower than the sandwich layer fusing point.
Background technology
Existing screw rod mechanism---as plastic overmold machine, spinning-drawing machine and injection moulding machine etc., before changing factory formula and product colour, must cleaning to screw rod and sleeve, prevent the product that screw rod and the different material influence of the interior last consignment of remnants of sleeve will be produced, make color and performance be affected.Its traditional cleaning method is, adds in the sleeve with the raw material that will produce, and heating is constantly discharged material remaining in the sleeve then, up to color and performance and will produce product consistent till; This cleaning method wastes raw material, electric, water, but also loses time.And some not the raw material of easy to clean also can in sleeve, gather, because high temperature heats for a long time, might carbonization, therefore, generally all need must remove screw rod at set intervals in industrial use, the pellet with carbonization clears then, loses time, workload is big, and damages machine easily.
Described in the patent CN 101244616A with plant class fruit or shell or through the plant class rhizome of cutting or be equipped with a certain proportion of surfactant again; solvent; chemical industry class cleaning materials such as washing assisant; join the interior discharge scrubbing of sleeve of plastics machine; be to utilize plant class fruit or plant class rhizome expanded by heating and in sleeve, move sleeve surface is cleaned; in addition; plant class fruit or shell or difficult to determine through the fusing point of the plant class rhizome of cutting; in implementation process, might stop up screw rod; and be difficult for discharging; and plant class rhizome surface contains inorganic particles such as silt, screw rod and sleeve generation wearing and tearing that can be very high to precision requirement through regular meeting.
Described in the patent CN100336892C is a class screw cleaning agent, be characterised in that: comprised sodium sulfate of polyethenoxy ether of fatty alcohol, neopelex etc. in the cleaning agent, make cleaning agent, very strong permeability and activation are arranged, the color in the residual raw material is dissolved rapidly; Its shortcoming is that the chemical agent that uses has corrosiveness to screw rod and sleeve, and in addition, owing to added many chemical assistants, therefore, contaminated environment is avoided in the processing of need classifying of the waste material of discharge.
Summary of the invention
The purpose of this invention is to provide a kind of cleaning method, a kind of method of cleaning screw rod and sleeve particularly is provided, specifically provides a kind of cleaning method of covering thread woven cloth of the thread oblong-shaped skin-core structure of coating that adopts the skin-core structure that the cortex fusing point is lower than the sandwich layer fusing point; For problems such as wasting raw material of existing in the cleaning process that solves screw rod mechanisms such as plastic overmold machine, injection machine, blow molding machine, extrusion moulding machine, spinning-drawing machine, the energy, time, effect are bad, provide a kind of method for cleaning efficiently and cleaning raw material.
A kind of cleaning method of the present invention, the screw rod and the sleeve that add hot extruder will clean raw material and join in the sleeve, the running main frame, constantly discharge the rectangle woven cloth that the thermoplastic resin covering thread that described cleaning raw material is a skin-core structure is prepared into cleaning raw material in the sleeve;
The fusing point of the cortical material of the thermoplastic resin covering thread of described skin-core structure is lower than the fusing point of core material;
The temperature of described sleeve heating is between the fusing point of the fusing point of cortical material and core material.
As optimized technical scheme:
Wherein, aforesaid a kind of cleaning method, described cortical material is PVC or PE; Wherein the molecular weight of PVC is 0.8～1.2ln η r/C (C is a concentration 0.2gPVC/100ml cyclohexanone solution, and temperature is 30 ℃), and the melt index of PE is 1～120.
Aforesaid a kind of cleaning method, described core material are terylene, acrylic fibers.
Aforesaid a kind of cleaning method, the skin thickness of the thermoplastic resin covering thread of described skin-core structure is 0.5～2mm, the sandwich layer diameter is 0.5～2mm.
Aforesaid a kind of cleaning method, described rectangle woven cloth, its length are 10～30cm, wide is 5～10cm.Woven cloth is 2*2,3*3,4*4 or 5*5, and promptly 2 covering threads also also weave as parallel as warp and 2 covering threads together together; Or 3 covering threads and together also together weave etc. as parallel as warp and 3 covering threads.
This patent is raw materials used to be the woven cloth of skin-core structure covering thread, covering thread comprises that PVC coats polyester thread, PE coats polyester thread and some other resin-coating line, and wherein, the outermost resin of covering thread is consistent basically with the product that will produce, in the discharge process, need not add any auxiliary agent.
The woven cloth internal layer of covering thread and the fusing point of cladding material all are very clear and definite, if extrusion pressure is excessive during discharge, the temperature that can also raise allows the inner fiber fusion, the situation of screw rod and sleeve therefore can not occur stopping up.
The woven cloth cleaning sleeve of covering thread and the principle of screw rod are: the short chopping of internal layer higher melt drives original remaining resin in outermost resin and the screw rod, extrude under the power effect in the screw rod rotation, the resin of not easy cleaning remaining in screw rod and the sleeve is taken out of, owing to have the higher terylene of fusing point or other higher melt silks in the woven cloth, therefore, not fusion fully in extrusion; The short fiber of fusion does not have an agglomeration to molten resin, and molten resin is the center conglomeration with the short fiber, and sleeve and screw rod are had the pressure effect, therefore can clear up sleeve and screw rod fast and efficiently.
The described method for cleaning of this patent utilizes the physical mechanical active force that the clout in screw rod and the sleeve is extruded, and does not add any auxiliary agent, and screw rod is not had corrosiveness, and the waste material of discharge can directly be handled.Used resin and inner fiber all be can fusion material, and fusing point determines that the plant roots and stems, the fruit that do not have inorganic particle or fusing point to determine can not stop up screw rod and barrel, discharge is simple to operate.
Beneficial effect
Technical scheme of the present invention, used the covering thread woven cloth to clear up screw rod and sleeve, the covering thread outermost resin is melt into the bigger melt of viscosity in screw rod and sleeve, the but not fusion of covering thread internal layer tow, the higher resin melt of these short fibers drive viscosity of fusion is not cleared up sleeve and screw rod, owing to after short fiber and full-bodied resin are reunited, can a higher pressure effect be arranged, therefore improve cleaning performance greatly to screw rod and sleeve.Compare with the cleaning way of sleeve with existing screw rod, the present invention has following advantage:
1, greatly reduce scavenging period, saved the wide variety of materials and the energy, greatly reduce the cleaning cost of enterprise;
2, it is easy, clean, with low cost to clean screw rod and sleeve, utilizes woven cloth and endless tow bar can increase fiber and the direct cleaning surface of screw rod, to the screw rod corner of easy cleaning not cleaning out fast and efficiently;
3, environmental protection, non-pollution discharge avoid chemical assistant and silt dust granules to the erosion of screw rod and stained.
4, the covering thread woven cloth can production sandy beach screen cloth, some clouts or underproof product in the process such as table linen, curtain, as long as be cut into the cleaning that rectangle promptly can be used for screw rod and barrel, saved a large amount of costs.
Description of drawings
Fig. 1 is the covering thread schematic diagram
Fig. 2 is the woven cloth schematic diagram
Wherein 1 is outer field thermoplastic resin, and 2 is the sandwich layer fiber.
The specific embodiment
Below in conjunction with the specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
A kind of cleaning method of the present invention, the screw rod and the sleeve that add hot extruder will clean raw material and join in the sleeve, the running main frame, constantly discharge the rectangle woven cloth that the thermoplastic resin covering thread that described cleaning raw material is a skin-core structure is prepared into cleaning raw material in the sleeve; Described covering thread as shown in Figure 1, wherein 1 is outer field thermoplastic resin, 2 is the sandwich layer fiber.
The fusing point of the cortical material of the thermoplastic resin covering thread of described skin-core structure is lower than the fusing point of core material;
The temperature of described sleeve heating is between the fusing point of the fusing point of cortical material and core material.
Aforesaid a kind of cleaning method, wherein, described cortical material is PVC or PE; Wherein the molecular weight of PVC is 0.8～1.2ln η r/C (C is a concentration 0.2gPVC/100ml cyclohexanone solution, and temperature is 30 ℃), and the melt index of PE is 1～120.
Described core material is terylene, acrylic fibers.
The skin thickness of the thermoplastic resin covering thread of described skin-core structure is 0.5～2mm, and the sandwich layer diameter is 0.5～2mm.
Described rectangle woven cloth, as shown in Figure 2, its length is 10～30cm, wide is 5～10cm.Woven cloth is 2*2,3*3,4*4 or 5*5, and promptly 2 covering threads also also weave as parallel as warp and 2 covering threads together together; Or 3 covering threads and together also together weave etc. as parallel as warp and 3 covering threads.
A kind of cleaning method at the PVC coating machine, at first, die head is removed earlier, then, the screw rod and the sleeve that add hot extruder, screw rod and sleeve one, two, three, the temperature in four districts is set at 160 ℃, 163 ℃, 166 ℃, 170 ℃, it is wide to be cut into 10cm, the rectangle woven cloth that the thermoplastic resin covering thread of the skin-core structure of the strip that 30cm is long is prepared into joins in the sleeve, and the cortical material of the thermoplastic resin covering thread of described skin-core structure is PVC, and its molecular weight is 0.8ln η r/C, C is a concentration 0.2gPVC/100ml cyclohexanone solution, temperature is 30 ℃, and the PVC skin thickness is 0.5mm, and core material is a terylene, diameter is 0.5mm, and woven cloth is 2*2; The running main frame the discharge constantly of remaining PVC material with cleaning raw band in the sleeve.Therebetween, dacron thread in the middle of the covering thread does not have fusion, these not the short fiber of fusion drive the higher PVC melt of viscosity sleeve and screw rod cleared up because after short fiber and the reunion of full-bodied resin, can a higher pressure effect be arranged to screw rod and sleeve, therefore improve cleaning performance greatly.
Embodiment 2
A kind of cleaning method of the extruder at the PVC plastic product, at first, mould is removed earlier, then, the screw rod and the sleeve that add hot extruder, screw rod and sleeve one, two, three, the temperature in four districts is set at 165 ℃, 167 ℃, 169 ℃, 173 ℃, it is wide to be cut into 10cm, the rectangle woven cloth that the thermoplastic resin covering thread of the skin-core structure of the strip that 10cm is long is prepared into joins in the sleeve, and the cortical material of the thermoplastic resin covering thread of described skin-core structure is PVC, and its molecular weight is 1.2ln η r/C, C is a concentration 0.2gPVC/100ml cyclohexanone solution, temperature is 30 ℃, and the PVC skin thickness is 2mm, and core material is a terylene, diameter is 2mm, and woven cloth is 4*4; The running main frame the discharge constantly of remaining PVC material with cleaning raw band in the sleeve.Therebetween, dacron thread in the middle of the covering thread does not have fusion, these not the short fiber of fusion drive the higher PVC melt of viscosity sleeve and screw rod cleared up because after short fiber and the reunion of full-bodied resin, can a higher pressure effect be arranged to screw rod and sleeve, therefore improve cleaning performance greatly.
Embodiment 3
A kind of cleaning method at the extruder of producing the PE plastic product, at first, mould is removed earlier, the screw rod and the sleeve that add hot extruder then, screw rod and sleeve one, two, three, the temperature in four districts is set at 150 ℃, 153 ℃, 156 ℃, 160 ℃, it is wide to be cut into 5cm, the rectangle woven cloth that the thermoplastic resin covering thread of the skin-core structure of the strip that 10cm is long is prepared into joins in the sleeve, and the cortical material of the thermoplastic resin covering thread of described skin-core structure is PE, and the melt index of PE is 1, thickness is 0.5mm, core material is acrylic fibers, and diameter is 1mm, and woven cloth is 3*3; The running main frame the discharge constantly of remaining PE material with cleaning raw band in the sleeve.Therebetween, the acrylics filament in the middle of the covering thread does not have fusion, these not the short fiber of fusion drive the PE melt sleeve and screw rod cleared up owing to after short fiber reunites with the PE resin, can an individual higher pressure effect be arranged to screw rod and sleeve, so improve cleaning performance greatly.
Embodiment 4
A kind of at the cleaning method of producing the PE coating machine, at first, die head is removed earlier, the screw rod and the sleeve that add hot extruder then, screw rod and sleeve one, two, three, the temperature in four districts is set at 155 ℃, 158 ℃, 160 ℃, 161 ℃, it is wide to be cut into 5cm, and the rectangle woven cloth that the thermoplastic resin covering thread of the skin-core structure of the strip that 30cm is long is prepared into joins in the sleeve, and the cortical material of the thermoplastic resin covering thread of described skin-core structure is PE, the cortical material of the thermoplastic resin covering thread of described skin-core structure is PE, the melt index of PE is 120, and thickness is 2mm, and core material is acrylic fibers, diameter 1.5mm, woven cloth is 5*5; The running main frame the discharge constantly of remaining PE material with cleaning raw band in the sleeve.Therebetween, acrylics filament in the middle of the covering thread does not have fusion, these not the short fiber of fusion drive the PE melt sleeve and screw rod cleared up because after short fiber and the reunion of full-bodied resin, can a higher pressure effect be arranged to screw rod and sleeve, therefore improve cleaning performance greatly.
Embodiment 5
A kind of cleaning method at the extruder of producing the PVC plastic product, at first mould is removed earlier, the screw rod and the sleeve that add hot extruder, screw rod and sleeve one, two, three, the temperature in four districts is set at 165 ℃, 168 ℃, 170 ℃, 171 ℃, it is wide to be cut into 8cm, the rectangle woven cloth that the thermoplastic resin covering thread of the skin-core structure of the strip that 20cm is long is prepared into joins in the sleeve, its molecular weight is 0.9ln η r/C, and C is a concentration 0.2gPVC/100ml cyclohexanone solution, and temperature is 30 ℃, the PVC skin thickness is 2mm, core material is acrylic fibers, diameter 1.5mm, and woven cloth is 4*4; The running main frame the discharge constantly of remaining PVC material with cleaning raw band in the sleeve.Therebetween, acrylics filament in the middle of the covering thread does not have fusion, these not the short fiber of fusion drive the higher PVC melt of viscosity sleeve and screw rod cleared up because after short fiber and the reunion of full-bodied resin, can a higher pressure effect be arranged to screw rod and sleeve, therefore improve cleaning performance greatly.
Embodiment 6
A kind of at the cleaning method of producing the PE coating machine, at first die head is removed, the screw rod and the sleeve that add hot extruder then, screw rod and sleeve one, two, three, the temperature in four districts is set at 157 ℃, 159 ℃, 161 ℃, 164 ℃, it is wide to be cut into 9cm, the rectangle woven cloth that the thermoplastic resin covering thread of the skin-core structure of the strip that 25cm is long is prepared into joins in the sleeve, the cortical material of the thermoplastic resin covering thread of described skin-core structure is PE, and the cortical material of the thermoplastic resin covering thread of described skin-core structure is a terylene, and the melt index of PE is 103, thickness is 1mm, core material is a terylene, diameter 1.8mm, and woven cloth is 2*2; The running main frame the discharge constantly of remaining PE material with cleaning raw band in the sleeve.Therebetween, the acrylics filament in the middle of the covering thread does not have fusion, these not the short fiber of fusion drive the PE melt sleeve and screw rod cleared up because short fiber and resin reunite after, can an individual higher pressure effect be arranged to screw rod and sleeve, so improve cleaning performance greatly.
Claims (5)
1. cleaning method, the screw rod and the sleeve that add hot extruder will clean raw material and join in the sleeve, the running main frame, constantly discharge cleaning raw material in the sleeve, it is characterized in that: the rectangle woven cloth that the thermoplastic resin covering thread that described cleaning raw material is a skin-core structure is prepared into;
The fusing point of the cortical material of the thermoplastic resin covering thread of described skin-core structure is lower than the fusing point of core material;
The temperature of described sleeve heating is between the fusing point of the fusing point of cortical material and core material.
2. a kind of cleaning method according to claim 1 is characterized in that, described cortical material is PVC or PE; Wherein the molecular weight of PVC is 0.8～1.2ln η r/C, and C is a concentration 0.2gPVC/100ml cyclohexanone solution, and temperature is 30 ℃; The melt index of PE is 1～120.
3. a kind of cleaning method according to claim 1 is characterized in that, described core material is terylene, acrylic fibers.
4. a kind of cleaning method according to claim 1 is characterized in that, the skin thickness of the thermoplastic resin covering thread of described skin-core structure is 0.5～2mm, and the sandwich layer diameter is 0.5～2mm.
5. a kind of cleaning method according to claim 1 is characterized in that, described rectangle woven cloth, its length are 10～30cm, and wide is 5～10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110078226XA CN102198450A (en) | 2011-03-30 | 2011-03-30 | Cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110078226XA CN102198450A (en) | 2011-03-30 | 2011-03-30 | Cleaning method |
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|---|---|
| CN102198450A true CN102198450A (en) | 2011-09-28 |
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| CN201110078226XA Pending CN102198450A (en) | 2011-03-30 | 2011-03-30 | Cleaning method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065728A (en) * | 2012-12-29 | 2013-04-24 | 安徽省康利亚实业有限公司 | Downtime post-processing craft of extruder |
| CN103433229A (en) * | 2013-08-23 | 2013-12-11 | 苏州利材高分子科技材料有限公司 | Method for cleaning screw extruder |
| CN104858183A (en) * | 2015-05-11 | 2015-08-26 | 昆山恒光塑料制品有限公司 | Screw surface layer plastic removing technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD239355A1 (en) * | 1985-07-18 | 1986-09-24 | Robotron Elektronik | PROCESS FOR THE QUICK COLOR CHANGE IN THE PROCESSING OF ACCUMULATED THERMOPLASTIC MOLDING MATERIALS AND CLEANING MATERIAL FOR CARRYING OUT THE METHOD |
| JPH05220735A (en) * | 1992-02-17 | 1993-08-31 | Yasuo Yada | Cleaning method for kneading tank and cleaning material for said cleaning |
| JP2005219398A (en) * | 2004-02-06 | 2005-08-18 | Osamu Izawa | Cleaning agent for molding machine |
| CN101244616A (en) * | 2007-02-16 | 2008-08-20 | 李炯标 | Scrubbing polishing method for plastics machine and scrubbing relief polishing material |
| JP2009039863A (en) * | 2007-08-06 | 2009-02-26 | Daicel Polymer Ltd | Resin composition for washing |
| CN101973118A (en) * | 2010-09-20 | 2011-02-16 | 北京化工大学 | Method for cleaning PVC extruder by using rubber |
-
2011
- 2011-03-30 CN CN201110078226XA patent/CN102198450A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD239355A1 (en) * | 1985-07-18 | 1986-09-24 | Robotron Elektronik | PROCESS FOR THE QUICK COLOR CHANGE IN THE PROCESSING OF ACCUMULATED THERMOPLASTIC MOLDING MATERIALS AND CLEANING MATERIAL FOR CARRYING OUT THE METHOD |
| JPH05220735A (en) * | 1992-02-17 | 1993-08-31 | Yasuo Yada | Cleaning method for kneading tank and cleaning material for said cleaning |
| JP2005219398A (en) * | 2004-02-06 | 2005-08-18 | Osamu Izawa | Cleaning agent for molding machine |
| CN101244616A (en) * | 2007-02-16 | 2008-08-20 | 李炯标 | Scrubbing polishing method for plastics machine and scrubbing relief polishing material |
| JP2009039863A (en) * | 2007-08-06 | 2009-02-26 | Daicel Polymer Ltd | Resin composition for washing |
| CN101973118A (en) * | 2010-09-20 | 2011-02-16 | 北京化工大学 | Method for cleaning PVC extruder by using rubber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065728A (en) * | 2012-12-29 | 2013-04-24 | 安徽省康利亚实业有限公司 | Downtime post-processing craft of extruder |
| CN103433229A (en) * | 2013-08-23 | 2013-12-11 | 苏州利材高分子科技材料有限公司 | Method for cleaning screw extruder |
| CN104858183A (en) * | 2015-05-11 | 2015-08-26 | 昆山恒光塑料制品有限公司 | Screw surface layer plastic removing technology |
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Application publication date: 20110928 |