CN208615101U - Utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material - Google Patents
Utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material Download PDFInfo
- Publication number
- CN208615101U CN208615101U CN201821273336.5U CN201821273336U CN208615101U CN 208615101 U CN208615101 U CN 208615101U CN 201821273336 U CN201821273336 U CN 201821273336U CN 208615101 U CN208615101 U CN 208615101U
- Authority
- CN
- China
- Prior art keywords
- drying
- air
- conveyer belt
- raw material
- modified poly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material, including horizontal pull system, drying box body, transmission device；Horizontal pull system includes: preheating section, stretch section, heat-setting section, cooling section；The first exhaust blower is arranged in preheating section, the second exhaust blower is arranged in stretch section, third exhaust blower is arranged in heat-setting section；Air inlet and outlet is provided in drying box body；Air inlet is connect with blast main, and blast main is connect with the first exhaust blower by the first air hose, is connect by the second air hose with the second exhaust blower, connect by third air hose with third exhaust blower；Air inlet is connected to air outlet, forms dry air duct inside drying box；Transmission device includes conveyer belt, feed opening, discharge gate；Through-hole is set on conveyer belt；Transmission band part is located in drying box body, descends two sides on the belt on dry air duct, by air inlet and air outlet point；Feed opening is arranged above conveyer belt；Discharge gate is arranged below conveyer belt.
Description
Technical field
The utility model relates to plastic film contour machining equipment more particularly to a kind of fan-drying heat for utilizing horizontal drawing case
The drying system of shrink film modified poly ester raw material.
Background technique
Heat shrink films are by introducing other segments on PET strand with modified poly ester, and the molecular structure of formation is regular
The polyester material that property is poor, crystallinity is extremely low, water imbibition is similar to PET, some kind hygroscopicity can be stronger.Compared to common
The drying of PET, heat shrink films modified poly ester are more troublesome.Since altered contents content is higher in heat shrink films modified poly ester,
Its fusing point with glass transition temperature is compared PET and had to be declined to a certain degree, its crystallinity is extremely low in addition, so Modified polyester chips exist
75 DEG C or so begin to soften, and adhesion can be generated between particle, the 120-130 DEG C of drying temperature that unbearable PET is used can only
Use 75 DEG C or so low temperature, the drying process mode of long period.
There are two main classes for modified poly ester heat shrink films production technology, and one kind is the purely lateral shrink film for stretching and obtaining, a kind of
It is the cross directional stretch heat shrink films for thering is longitudinal stretching (stretching ratio is very low) to assist.Its process flow are as follows: raw and auxiliary material → (dry
It is dry) → conveying metering → extruder plasticizing (single screw extrusion machine or double screw extruder) → metering pump → T-die curtain coating →
Chilling roller slab → (longitudinal stretching) → cross directional stretch → traction → winding → cutting → inspection → packaging → finished product.Wherein, it does
Drying process is matching used with single screw extrusion machine, if generally no longer individually matched using the extruder of twin-screw double-exhaust
Set drying device.But in recent years, the successful use in processing is squeezed out in PET with twin-screw double-exhaust extruder, PET is stretched
Film is more and more using this production line for squeezing out processing method.It is plasticized, conveys in double screw extruder, in plasticizing process,
It dehumidified, be vented by vacuumizing mode, avoid hydrolysis, modified poly ester heat shrink films also mostly use this mode to produce.
Because vacuum system of dual-screw extruder is that comprehensive vacuum plant extracting ability and drawn polyester film line are total
Body requires design, and dehumidifying, exhaust capacity have certain limit.Its more satisfactory disposition is that polyester slice is aqueous
Amount is lower than 2000ppm.Though there are certain design margins for vacuum plant gas exhaust treatment ability, but if polyester slice water content mistake
High or polyester slice is kept for a long time compared with high-moisture percentage, if polyester slice water content is 3000-4000ppm.It, can be because when actual production
Vacuum dehumidifying effect is inadequate, causes that certain hydrolysis problem occurs in polyester process.It intuitively shows as, polyester in extrusion process
Viscosity drop is bigger than normal, and the mechanical strength of processed film article is relatively low.In addition, being squeezed if polyester slice moisture content is higher always
Machine vacuum system operating load will increase out, and long-term heavy-duty service is also easy to produce mechanical breakdown.
In addition, polyester slice in addition to the vacuum packaging of specialities, generally adds the jumbo bag of PE inner lining bag using plastic woven bag
Form, sealing tie up mode using artificial.In wet environment or storage for a long time, slice moisture absorption to water content
2000ppm or more is easy to occur.This brings larger matter to twin-screw double-exhaust extruder production drawn polyester film
Measure hidden danger and problem.
Therefore, with the processing modified polyester thermal contraction film of double screw extruder, carrying out simple be dried to raw material is to have one
It is fixed necessary, it is helpful to product quality and equipment operation.
And which kind of process route no matter modified poly ester heat shrink films use, and is intended to carry out cross directional stretch.Cross directional stretch system
Also referred to as transverse stretching machine, transverse stretching machine is mainly by tentering system；Heated oven (including lagging casing, heat source, hot wind distributing system)；It passes
Guiding systems；The most of composition of film cooling system four.By film drawing process process, transverse stretching machine can be divided into preheating section, stretch section,
Heat-setting section, cooling section.
During cross directional stretch, the medium of heating and cooling film is circulated air.Due to having low point during horizontal drawing
Sub- substance evaporates, and in order to reduce the concentration of low polymer in heated oven, reduces its pollution to film surface, needs not
Disconnected ground extraction section hot-air in baking oven, in the fresh air that baking oven air inlet is supplemented, heats.Currently, extracted heat
Wind is exhausted directly in air, this partial heat wastes.
For this purpose, the utility model devises a kind of device for utilizing horizontal drawing case fan-drying Modified polyester chips.
Summary of the invention
Heat shrink films modified poly ester is dried the purpose of the utility model is to provide a kind of recycling, using horizontal drawing case air draft
The drying system of raw material guarantees and improves membrane quality.
In order to achieve the above object, technical solution proposed by the present invention is as follows:
Utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material, including horizontal pull system, drying
Case ontology, transmission device；The horizontal pull system includes: preheating section, stretch section, heat-setting section, cooling section；The preheating section setting
The second exhaust blower is arranged in first exhaust blower, the stretch section, third exhaust blower is arranged in the heat-setting section；The drying box body
On be provided with air inlet and outlet；The air inlet is connect with blast main, and the blast main passes through the first air hose and the first air draft
Machine connection is connect with the second exhaust blower by the second air hose, is connect by third air hose with third exhaust blower；The air inlet with
The air outlet connection forms dry air duct inside the drying box；The transmission device include conveyer belt, feed opening,
Discharge gate；Through-hole is set on the conveyer belt；The transmission band part is located in drying box body, is in and dries on air duct, incites somebody to action
Air inlet and air outlet point descend two sides on the belt；The feed opening is arranged in drying box body, is located above conveyer belt；
The discharge gate is arranged in drying box body, is located at below conveyer belt.
Further: baffle is arranged in the band body two sides of the conveyer belt.
It is further: guide plate, the guide plate and the baffle phase are set between the feed opening and the conveyer belt
It connects.
Further: the air inlet is located in the drying box body below the conveyer belt, the air outlet position
In the drying box body above the conveyer belt.
It is further: filter screen is respectively set in the air inlet and outlet.
Further: the filter screen is 80 mesh stainless (steel) wires.
Further: the through-hole is set in a row, and the aperture of each through-hole is 1.5mm, each upper two adjacent through-holes of row
Center is 10mm away from row's spacing for 5mm, adjacent two exhausting hole.
Further: the drying box body is the cabinet of iron plate welding.
Further: setting power-operated shutter is fanned in the air inlet.
Further: first air hose, the second air hose, third air hose and the blast main junction are respectively set first
Thermometer is provided with second temperature meter in blast main and air inlet junction.
The technical effect of the utility model is:
In the present invention, the horizontal hot wind for drawing each section of case discharge of reasonable utilization, by pipeline is aggregated into general pipeline, and
Into after above-mentioned drying box body, the modified poly ester raw material on conveyer belt in conveying is purged, and makes its drying that heats up, is allowed
The volatilization of its surface moisture is detached from, and is reduced modified poly ester moisture content of raw material, is mitigated and vacuumize in twin-screw extrusion machining process
Pressure reduces in plasticizing process and hydrolyzes risk, makes full use of the discarded hot wind energy, guarantee and improve membrane quality.
Detailed description of the invention
Fig. 1 is one schematic diagram of the embodiments of the present invention；
Fig. 2 is two schematic diagram of the embodiments of the present invention；
In above each figure: 1 air inlet, power-operated shutter fan 11,2 conveyer belts, 3 polyester slices, 4 feed openings, 5 air outlets, mistake
51,6 drainage conduit of strainer, 7 drying box bodies, 8 blast mains, 81 first air hoses, 82 first exhaust blowers, 83 second air hoses, 84 second
Exhaust blower, 85 third air hoses, 86 third exhaust blowers, 87 thermometers.
Specific embodiment
Be described in detail the utility model below in conjunction with attached drawing and specific embodiment, illustrative examples therein with
And explanation is only used to explain the utility model, but is not intended as the improper restriction to the utility model.
Utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material, including horizontal pull system, drying
Case ontology, transmission device；The horizontal pull system includes: preheating section, stretch section, heat-setting section, cooling section；The preheating section setting
The second exhaust blower is arranged in first exhaust blower, the stretch section, third exhaust blower is arranged in the heat-setting section；The drying box body
On be provided with air inlet and outlet；The air inlet is connect with blast main, and the blast main passes through the first air hose and the first air draft
Machine connection is connect with the second exhaust blower by the second air hose, is connect by third air hose with third exhaust blower；The air inlet with
The air outlet connection forms dry air duct inside the drying box；The transmission device include conveyer belt, feed opening,
Discharge gate；Through-hole is set on the conveyer belt；The transmission band part is located in drying box body, is in and dries on air duct, incites somebody to action
Air inlet and air outlet point descend two sides on the belt；The feed opening is arranged in drying box body, is located above conveyer belt；
The discharge gate is arranged in drying box body, is located at below conveyer belt.
In this drying system, by the horizontal drawing case preheating section of flat membrane method modified poly ester production line of heat shrinkable films, stretch section, sizing
The air draft of 3 sections of section through pipe influx into a total air-exhausting duct, and total air-exhausting duct and the air inlet of drying box body is connected
It connects；Modified poly ester raw material on conveyer belt in conveying is purged, and allows its drying that heats up, makes its surface moisture volatilization, de-
From reduction modified poly ester moisture content of raw material mitigates evacuated pressure in twin-screw extrusion machining process.
Below by taking 4200mm production line of heat shrinkable films as an example, the working principle of this drying system is illustrated:
The technological temperature of preheating section in the horizontal pull system of modified poly ester heat shrink films is the process warm of 98 DEG C or so, stretch section
Degree is 88 DEG C or so, the technological temperature for section of being formed is 75 DEG C or so.
Three above region is respectively set an at least exhaust blower, and the power of every exhaust blower is 5.5kw (or other function
Rate is herein conventional selection), the air draft total amount in three above region is calculated for 450~600m3/h；Temperature of outgoing air is in 72-75
DEG C or so, just meet the drying temperature of modified poly ester；Therefore it may be implemented completely using the horizontal air draft for drawing case come to thermal contraction
Film is dried with modified poly ester raw material；Both will not waste of energy, improvement cost is also cheap；It only needs to increase cabinet and cabinet
Internal transmission belt, so that it may effectively reduce the risk that modified poly ester hydrolyzes in plasticizing process, make full use of discarded hot wind energy
Source guarantees and improves membrane quality；Also mitigate evacuated pressure in twin-screw extrusion machining process simultaneously.
In the present apparatus, air inlet and air outlet are located at the conveyer belt of setting through-hole or more two sides, blow from above or under
It blows over it is not limited here, but had better be blown from bottom to top during actual use, can effectively guarantee to transmit
The material to be dried taken not will cause in disorder, is hard to tell whether material is dried, is unfavorable for producing.
In addition feed opening as close as possible to conveyer belt driving wheel, discharge gate as close as possible to conveyer belt driven wheel, by object
Expect that the self weight of itself falls into discharge gate, can be set to funnel type at discharge gate, there is gather effect, more conducively discharge；Or
Other forms, it is not limited here.
In order to allow material preferably to dry in sequence, it is convenient for procedure, gear is arranged in the band body two sides of the conveyer belt
Plate.The possibility that baffle effectively prevents the material on conveyer belt to be blown off guarantees the stability of transmission.The feed opening and institute
It states and guide plate is set between conveyer belt, the guide plate connects with the baffle.Guide plate is preferably obliquely installed, convenient under material
It falls.
In order to further guarantee to carry out efficient drying to the material on conveyer belt, while again convenient for transmission；The air inlet
Mouth is located in the drying box body below the conveyer belt, and the air outlet is located at the drying above the conveyer belt
On case ontology.
The wind purged from bottom to top effectively realizes purging, and the material that gravity can be fallen naturally is blown into row
Material mouth is killed two birds with one stone.Upper downward blowing is avoided, air outlet may be blocked.
In order to avoid material enters air inlet and air outlet, and also to guarantee the cleaning of air inlet and the outlet；It is described into
Filter screen is respectively set on air port, air outlet.The mesh number of filter screen is arranged according to actual material size, filtering described herein
Net is 80 mesh stainless (steel) wires.
Further: the through-hole is set in a row, and the aperture of each through-hole is 1.5mm, each upper two adjacent through-holes of row
Center is 10mm away from row's spacing for 5mm, adjacent two exhausting hole.
The drying box body is the cabinet of iron plate welding.It is welded using iron plate, low in cost, processing and manufacturing is simple.
In order to cooperate the purging of air inlet to act, power-operated shutter is set in the air inlet and is fanned.Power-operated shutter fan can be with
The wind shifts that air inlet is come out make purging more flexible to angle is needed.
For more stable drying, punishment is connect with the blast main in first air hose, the second air hose, third air hose
First thermometer is not set, blast main and air inlet junction are provided with second temperature meter.It is aobvious by the numerical value of each thermometer
Show, the air quantity that each air hose enters general pipeline can be adjusted according to the actual needs, to adjust drying temperature, significantly more efficient guarantee
Drying temperature.
Embodiment one
As shown in Figure 1, in the present embodiment, the lower section of drying box body is arranged in air inlet, air outlet is arranged in drying
The top of case ontology, transmission band part are located in drying box body, and feed inlet is located in the drying box body above conveyer belt；Row
Material mouth is located in the drying box body below conveyer belt, is respectively set filter screen on air inlet and air outlet, and the two of conveyer belt
Baffle is arranged in side, and material is prevented to fall.
In the present embodiment, to increasing drying device before original double screw extruder, the horizontal drawing of reasonable utilization
The hot wind of each section of case discharge, avoids the waste of the energy；Improvement cost is low, purges to modified poly ester raw material, reduces and is modified
Polyester raw material moisture content mitigates evacuated pressure in twin-screw extrusion machining process, improves service life, avoid failure
It generates, while reducing the risk that modified poly ester raw material hydrolyzes in plasticizing process, guarantee and improve the quality of film.
Embodiment two
As shown in Fig. 2, being different from above-described embodiment, in the present embodiment, thermometer is provided on each blast pipe, and
And be provided with power-operated shutter on air inlet and fan, it can arbitrarily adjust the angle of air inlet purging.It is significantly more efficient to reduce modification
The moisture content of polyester raw material.
The above description is not intended to limit the present invention, and the utility model is also not limited to the example above, this skill
The variations, modifications, additions or substitutions that the technical staff in art field is made in the essential scope of the utility model, also should belong to
The protection scope of the utility model.
Claims (10)
1. utilizing the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material, it is characterised in that: including horizontal drawing
System, drying box body, transmission device；
The horizontal pull system includes: preheating section, stretch section, heat-setting section, cooling section；The first exhaust blower of the preheating section setting,
The second exhaust blower is arranged in the stretch section, third exhaust blower is arranged in the heat-setting section；
Air inlet and outlet is provided in the drying box body；The air inlet is connect with blast main, and the blast main passes through
First air hose connect with the first exhaust blower, is connect by the second air hose with the second exhaust blower, by third air hose and third air draft
Machine connection；The air inlet is connected to the air outlet, forms dry air duct inside the drying box body；
The transmission device includes conveyer belt, feed opening, discharge gate；Through-hole is set on the conveyer belt；The transmission band part
In drying box body, two sides are descended on the belt on dry air duct, by air inlet and air outlet point；
The feed opening is arranged in drying box body, is located above conveyer belt；The discharge gate is arranged in drying box body,
Below conveyer belt.
2. the drying system according to claim 1 using horizontal drawing case fan-drying heat shrink films modified poly ester raw material,
It is characterized by: baffle is arranged in the band body two sides of the conveyer belt.
3. the drying system according to claim 2 using horizontal drawing case fan-drying heat shrink films modified poly ester raw material,
It is characterized by: guide plate is arranged between the feed opening and the conveyer belt, the guide plate connects with the baffle.
4. horizontal drawing case fan-drying heat shrink films modified poly ester raw material is utilized described in any one according to claim 1-3
Drying system, it is characterised in that: the air inlet is located in the drying box body below the conveyer belt, the outlet air
Mouth is located in the drying box body above the conveyer belt.
5. the drying system according to claim 4 using horizontal drawing case fan-drying heat shrink films modified poly ester raw material,
It is characterized by: filter screen is respectively set in the air inlet and outlet.
6. the drying system according to claim 5 using horizontal drawing case fan-drying heat shrink films modified poly ester raw material,
It is characterized by: the filter screen is 80 mesh stainless (steel) wires.
7. according to claim 1 or 6 utilize the horizontal dry system for drawing case fan-drying heat shrink films modified poly ester raw material
System, it is characterised in that: the through-hole is set in a row, and the aperture of each through-hole is 1.5mm, the center of each upper two adjacent through-holes of row
It is 10mm away from row's spacing for 5mm, adjacent two exhausting hole.
8. the drying system according to claim 7 using horizontal drawing case fan-drying heat shrink films modified poly ester raw material,
It is characterized by: the drying box body is the cabinet of iron plate welding.
9. the drying system according to claim 8 using horizontal drawing case fan-drying heat shrink films modified poly ester raw material,
It is characterized by: setting power-operated shutter is fanned in the air inlet.
10. the drying system according to claim 9 using horizontal drawing case fan-drying heat shrink films modified poly ester raw material,
It is characterized by: the first temperature is respectively set in first air hose, the second air hose, third air hose and the blast main junction
Meter is provided with second temperature meter in blast main and air inlet junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821273336.5U CN208615101U (en) | 2018-08-08 | 2018-08-08 | Utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821273336.5U CN208615101U (en) | 2018-08-08 | 2018-08-08 | Utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208615101U true CN208615101U (en) | 2019-03-19 |
Family
ID=65709287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821273336.5U Active CN208615101U (en) | 2018-08-08 | 2018-08-08 | Utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208615101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112720906A (en) * | 2020-12-10 | 2021-04-30 | 浙江固特热熔胶有限公司 | Production process and equipment of low-temperature anti-brittle book and periodical glue |
-
2018
- 2018-08-08 CN CN201821273336.5U patent/CN208615101U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112720906A (en) * | 2020-12-10 | 2021-04-30 | 浙江固特热熔胶有限公司 | Production process and equipment of low-temperature anti-brittle book and periodical glue |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106630539A (en) | Low-temperature drying device for sludge | |
| EP2650632A1 (en) | Multiple product belt drier for drying pasty and/or powdery materials, particularly for drying sludges from treatment plants or biomass | |
| CN206253351U (en) | A kind of rice dries screening machine | |
| CN109944004B (en) | Cloth steaming shaping equipment | |
| CN208615101U (en) | Utilize the horizontal drying system for drawing case fan-drying heat shrink films modified poly ester raw material | |
| CN108344281A (en) | Hot air circulation drying cotton machine | |
| CN204346050U (en) | Cycles, economized sea-tangle air-dry apparatus | |
| CN206352952U (en) | A kind of device for drying traditional Chinese medicinal materials | |
| CN210415437U (en) | PERT floor heating pipe forming machine | |
| CN206510253U (en) | The quick hair dryer of plastic bracing and plastic grain production line | |
| CN208269606U (en) | A kind of small particles material continuous drying equipment | |
| CN206593441U (en) | A kind of chamber typed drying-machine | |
| CN201439247U (en) | Hot air collecting dehydration device | |
| CN106766815A (en) | A kind of new mesh dryer | |
| CN113776281A (en) | Wet material of zinc hydroxide is dried, primary reducing mechanism | |
| CN209098487U (en) | A kind of automation sludge at low temperature drying equipment | |
| CN212538653U (en) | PET is from online drying device of type membrane production | |
| CN108180733A (en) | A kind of efficient weaving drying unit | |
| CN219686319U (en) | Plastic flat wire drawing machine | |
| CN210242171U (en) | Quick drying device is used in production of plastic woven sack raw materials | |
| CN207945954U (en) | Drying cotton machine system | |
| CN206501454U (en) | A kind of screw extrusion apparatus | |
| CN206501451U (en) | A kind of PET film band process units | |
| CN206396043U (en) | A kind of sludge at low temperature desiccation apparatus | |
| CN207428563U (en) | A kind of safe shoemaking tenderizing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |