Overlock Sewing Machine is very first sewing machine made by brother and other manufacturers. The sewing machine which is used for sewing edge or to join two or more fabric pieces by five or more threads is called over lock sewing machine. Usually this machine will cut the edges of the cloth as they are fed though some are made without machine cutters.
Function of Overlock Sewing Machine:
The functions of brother over lock sewing machine are given below.
Overlock Sewing Machine
Over locks sewing machine makes an edge finish and sew seams of fabric.
It cuts off the fabric for smooth edge for sewing with nancy sewing
This sewing machine is suitable for sewing such as T-shirt, skirt, suit, trousers etc
This sewing machine suitable for diverse stitch as selectable options
Specifications of Brother Industrial Sewing Machine:
The features of brother sewing machines are given below.
Brother sewing machines are suitable for over edging operation of thin, moderate and thick fabrics
Brother sewing machines was equipped with automatic lubricating system
Safety over lock machine is a combination of 3 threads over lock machine and 2 thread chain stitch
This sewing machine has 1 thread and 2 loopers and works with 3 spools or cones of thread.
Highest speed of over lock machine is up to 8500 rpm.
Used for needles, 3 loopers and 5 cones of thread.
It provides straight chain stitch plus an edge finish.
Sewing machine repair facility
It is similar of baby lock
Installation Procedure of Overlock Machine:
The machine should be connected correctly according to illustrations shown herewith. Fix the Secondary Board to the under face of machine table by Bolt and Nut. Rubber Cushion should be put into each hollow of Supporting Board.
Installation Procedure of Overlock Machine
Sewing Speed and Turning Direction of Pulley :
The highest sewing speed of this machine is shown in the table below. However, from the point of view durability it is preferred to function in the initial use of new machine at a speed of 20-25 that is lower than the highest speed for 200 hours approximately about one month.
Brother Sewing Machine Parts :
Brother sewing machine parts are listed below-
Sewing Machine Parts
Presser foot release
Adjusting screw
Tape Guide
Eye guard
Oil cap
Thread guide
Thread tension spring
Belt cover
Oil sight gauge
Push button
Front cover
Model plate
Indicate lamp
Metering devices
Roller
Cylinder cover
Presser footer
Presser arm
Differential lever
Elastic Tap Feeder and Control Box –
Brother sewing machine parts including elastic tap feeder and control box
Elastic Tap Feeder and Control Box
Elastic Tap Feeder-
Tap spool bar
Guide bar
Switch lever
Pole
Clamp
Main roller
Sub roller
Control Box –
Display
Function Switch
Setting Switch
Power Plug
Power Switch
Fuse Holder
Motor Pulley-
Use the Clutch Motor of 3 phase and bi-polar, 400 Watt and V-Belt of Type M. The motor should be located making both center lines of Motor Pulley and Machine Pulley be aligned when the Motor Pulley shifts to the left by pedaling.
Lubrication for Overlock Machine:
Quality machine oil is recommendable as the lubricant.
Lubrication
Feeding OiI:
Because oil in machine have been drained completely at the shipment when it must be replenished with new oil without fail before the operation. The feeding should be made up to the upper one of 2 lines of Oil Sight Gauge(A) removing Oil Cap (D) marked OIL. At the beginning use of brand new machine and the reuse of machine after long suspension of operation feed 2 or 3 drops of oil to Needle Bar(B) and Upper Looper Bar(C) without any fail.
Oil Gauge and Confirmation of Oil Flow:
Before the operation every day check the Oil Gauge regularly and replenish oil if the oil surface is below 2 lines. Oil Cap (D) should be tightened after the replenishment. At the beginning of operation confirm also that oil is flowing out of Oil Nozzle looking through Oil Cap (0).
Exchange of 0iI for Overlock Sewing Machine:
To have a long life of overlock sewing machine, after operation of about 250 hours the oil should be changed completely.
Exchange of 0iI
After that, the oil should be changed 2 or 3 times a year. Oil change should be made as follows.
Bring the machine head on the Table and
Drain oil and removing Drain Screw(E)
After draining, tighten the Drain Screw(E) again without fail
To replenish the new oil, refer to “Feeding Oil” (Item 5-2)
Check of Oil Filter and Exchange:
If the Oil Filter clogged with dust normal feeding of oil is impossible. Ordinarily, it is recommended to check the Filter every six months. In case of no oil comes out of Nozzle despite the oil reservoir is sufficient and in case of reservoir of oil is extremely little, check the machine.
Exchange
To repair ad check the Filter of Overlock Sewing Machine remove Oil Filter Cap(G). If the Filter is clogged with dust, it must be renewed. You can read more about this machine from brother sewing machine manual of their official site
Fabric Tester is used for viscose fabric, dacron fabric, calico fabric, fashion fabrics, jacquard fabric for laboratory tests to check major cost component of any garment attains high importance in regard to its testing on various quality parameters. This tester cover nearly all the major properties in this section. This tester also used to check surface-to-air tearing strength of textiles as well as for calculating dimensional changes in the fabric after dry cleaning so it is demanded in a large number in garments industry.
Types of Fabric Tester :
All types of fabric tester is given below with a diagram –
Carding Machine is used for fibers, which need to pass a sequence of processing to get yarn. This is the first step of spinning process. Spinning of textile fibers may be carded and cotton is the most common products all over the world for spinning process is completely different from textile fibers spinning methods. The main task of carding machine are typically similar for all kinds of fiber. There are cotton carding and wool carding available in the market those are different from each other.
Feature of Carding Machine:
In reverse way of cylinder working on flats for increasing action and improve of web quality.
For flat stripping a comb is generally replaced by cleaning roller.
Wool Carding machine reduce noise
Carding machine has multi suction that point on card and continuous suction.
Front and rear stationary flats and carding segment of carding machine under licker in are fitted.
Electronic control and digital display similar parameter.
It is run by Inverter controlled system, feed roller and doffer drive for stepless speeds.
Equipped with metallic card clothing width best quality.
Double apron system the web take-off device allowing visual inspection for beautiful look.
It exist automatic stop motion devices.
Textile Fibers :
Meticulously designed three licker-in structure can make fine and full textile fibers and fabrics open, greatly increase fiber separation and orientation, reduce cylinderand and flat clothing load, extend clothing duration, enhance wool carding efficiency in cylinder-flat area, reduce neps and short staple. Front/rear stationery flats is made by aluminum alloy, featured by gradual increase density arrangement, good tip neatness and convenient gage adjustment to ensure textile fibers carding more fully and fine. Visible plastic filtering pipe, fea-tured by smooth and easy main-tenance. Multi continuous suction points. `
Textile Fibers
Objective of Carding
The carding protects essentially involves the opening of the fibre aggregates by working them between two closely spaced surfaces covered with inclined wires.
The main objective of carding are:-
To carry further process of fibre opening to a state of individual fibres.
To remove naps, tiny lumps of fibre and fused fibre ends.
To make the fibres to provide a uniform distribution.
To deliver a continuous sliver for further processes.
As we know that “carding is the heart of the spinning”
The material fed to the carding machine is in the form of lap which is here by mean of chute feed system from the blow room, there are three outlets from the blow room line serves three group of card A, B, C. A & B lines in the carding department are the same but the line C employs the better quality. There are 4 cards in line A, 5 cards in line B and 6 cards in line C. In Malwa Industries Ltd. all cards are made by RIETER and havingmodel C-50 which is the latest model of card. The waste removal at the carding stage is 5-6%. The waste % of both carding and blow room is 10-11% in which 2.5-3% is flat waste and rest of 7-8% is dropping the cleaning efficiency of card alone is about 90-95% and the cleaning efficiency along with blow room is 99%.
DIFFERENT PARTS OF CARD
CYLINDER
DOFFER
LICKER-IN
FEED ROLLER
DELIEVERY ROLLER
CYLINDER WIRE
FLAT WIRE
LICKER – IN WIRE
DOFFER WIRE
The C-50 carding machine is settled with a closed loop control for minimizing the sliver irregularity. The drives are given by mean of belt. Here for grinding purpose automatic grinding roller is incorporated in card. The setting of the feed roller and the step roll at the delivery end are made by mean of a voltage setting at the respective points for example: step roll setting is set at 8 inch by mean of 2.p0 setting corresponding to a voltage of 3700W.
VARIOUS PARAMETERS OF C-50 CARD
Cylinder speed = 550rpm
Flat speed = 0.26m/min
Delivery speed = 244mpm
Total draft = 98.1 – 98.3
Production = 95 kgs/hrs.
Corresponding factor = 1.245
Can capacity = 52kgs
Sliver length = 8010m
Specifications of Yarn Carding Machine:
[label type=”label” title=”Specifications Name”]
[label type=”label” title=”Specifications Value”]
Product Category
Spinning
Machine Category
Carding Machine
Product Name
Cotton carding machine in yarn spinning
Product Model
According to Manufacturer
Product Class
New
Origin
China/India/Others
Brand/Manufacturer
Name of Manufacturer
Agent In Bangladesh
No/Yes
Power
6.88kw total
Temperature
Normal
Certification
SGS/Others
Production Capacity
1000sets/month
Dimension(L*W*H)
3132*1974mm
Width
1020mm
Sliver Weight
3.5-6.5g/m
Deliver Fixed Weight
3.5-6.5g/m
Feed Fixed Weight
350-800g/m
Spinning Method
Ring Spinning
Weight
5500kg
Delivery Speed
20-220m/min
Output
25-80kg/h
Breadth
1020mm
Coiler Can Size
600*1100mm
Cylinder Dia
1289mm
Doffer Dia
706mm
Doffer Speed
10-60rmp
Cylinder Speed
397r/min
Taker-In Roller Dia
250mm
Taker-In Roller Speed
1047rpm
Stationary Flats
Front 4 rear 7 stationary flats;Front 1 rear 1 web purifier
Flat Speed
166;187;213;4mm/min
Flat Quantity
Revolning flats 82pcs/working flats 30pcs
Range Of Application
Cotton/chemical fiber and blends
Yield(KG/H)
Maxmium 50
Description
Carding Machine owns special three roller stripping cotton device for making fiber
Parts of Carding Machine:
Carding Machine Parts
Textile Fibers Analysis Test:
Textile Fibers Burning test: Blow out the flame if still burning and smell the smoke. Note the odour and examine the color and nature of any ash or residue.
Take a small tuff of fibers (in this case yarn) and place close of the side of a small flame. Note if the fiber melt or shrink from the flame.
Move the fibre into the flame. Note whether the fibred burn and when held in the flame. Remove from the flame very slowly and note whether they continue to burn outside the flame.
Compare the behavior observed with that of the table flame retardant modification of some fibre cotton, rayon and acetate has retardate burning. Odour or burning and ash may be changed. Colored fibers especially those colored by pigments-will retain color in the color residue.
The vegetable fibre and regenerated cellulose (rayon) small like burning paper. Animal fiber and manmade protein fibers has odour of burning hair or feathers. Other manned fibre like acrylic nylon and spandex have characteristic odour which can be recognized with experience.
Type of fibre
Melts near flame
Shrinkage from flame
Burns in flame
Continuous to burn
Appearance of ash
Cotton/cellulose
No
No
Yes
Yes
Light grayish
Wool
Yes
Yes
Yes
Slowly
Irregular Blake
Polyester
Yes
Yes
Yes
Yes
Hard Blake round bead
Nylon
Yes
Yes
Yes
Yes
Hard gray round bead
Rayon
No
No
Yes
No
None
Textile Fibers Solubility test: For test as room temperature (20°C) place a small sample of fibres in a watch crystal test tube or 50ml beaks and cover with the test solvent. Use above 1 ml of solvent per 10 gm of fibre.
Hydrochloric acid
Sulfuric acid
Sulfuric acid
Formic acid
Concentration (%)
Temperature (°C)
Time (minute)
20
20
10
59.5
20
20
70
38
20
85
20
5
Cotton/cellulose
Insoluble
Insoluble
Soluble
Insoluble
Wool
Insoluble
Insoluble
Insoluble
Insoluble
Polyester
Insoluble
Insoluble
Insoluble
Insoluble
Nylon
Soluble
Soluble
Soluble
Soluble
Rayon
Insoluble
Insoluble
Insoluble
Insoluble
Microscopically cross section analysis: Obtain a parallel bundle of yarn. Use a sharp razor blade to make smooth cuts of the yarn, slides are prepared and viewed under magnification of 200-500 X compare with the cross section of known fibre.
Carding wool Cross
Carding Feature:
70% of the quality will be achieved in carding, if the wires are selected properly
Following Table Can Be Used As A Guide Line For Cylinder Wire Selection If micronaire is lower than 3.5, cylinder speed should be around 350rpm. If micronaire is within 3.5-4.0, it is about 450 rpm if it is more than 4.0, it is about 500 rpm.
The lower the mike, the lower the licker in speed ranging from 800-1150rpm depending on mike & production rate.
Pointed wires should be used for cylinder.
TSG grinder should be used once in 2 months for consistent quality.
Flat tops should be ground frequently (once in 3 months) for better yarn quality as flat tops play a major role in reducing neps & kitties in yarn. Emery fillet rollers should be used for flat tops grinding, instead of using grinding roller grinding stone.
Licker-in wire should be changed for every 150000kgs production in carding.
Stationary flats should be changed for every 150000kgs production in carding.
Individual card studies up to yarn stage should be conducted regularly, & if quality is deteriorated by 25% from average quality. Card should be attended (wire mounting, grinding, full-setting etc to be done).
Setting between cylinder & flat tops should be as close as possible, depending on variation between cylinder & flat tops. Care should be taken so that, wires do not touch each other.
Card auto levellers should be set properly. Nominal draft should be correct. Draft deviation should not be more than 5% during normal working.
Card stoppages should be as low as possible.
Slow speed working of cards should be avoided. Slivers produced during slow speed should be removed.
10 meters C.V% of card sliver should be less than 2.0.
Sliver weight difference between cards should not be more than 2.5%.
Sliver U% should be less than 3.5 & spectrogram peaks should be attended.
Cylinder loading should be nil & if is loaded, wire should be inspected & accordingly grinding should be done or wire should be changed.
Sliver diameter difference should be less. Calendar roller pressure should be same in all cards
Trash in sliver should be less than 0.1%
Uniformity ratio of sliver should be same or better than raw cotton
If kitties or seed coat fragments are more, higher flat speeds should be used & as much as flat waste should be removed to reduce seed coat fragments in yarn
In general sliver hank varies from 0.12 to 0.14
Individual card studies should be conducted up to yarn stage, if quality from a particular card is bad, immediate action to be taken to rectify problem. The lower the variations, the better the yarn quality.
Carding wool Making Tools:
Carding wool making tools are described below-
Cylinder and Licke-in: The structure of driving cylinder and licker-in with flat belt is very easy and simple. The driving cylinder is smooth and stable.
Doffer: The doffer is run by an inverter as well as synchronous belt. The synchronous belt control stepless variations of the speed.
Cross Apron :Cross apron is used for sliver guiding and easy operation.
Feed Roller: The feed roller is run by an electronic frequency converter. The electronic converter permits stepless variation of its speed and it is controled to be synchronized with doffer by the computer.
Pressure Mechanism: Pressure mechanism of the machine delivers the consistence amount the pressure and the measurement.
Multi suction point: Multi suction of the device is pointed on card
Flats: The flats increase carding activities to improve web quality. For flat stripping comb is replaced by brushing roller and the cleaning roller.
Electric control system: The electronic control cabinet of card control doffer’s and feed motor’s speed for making a stepless variable-speed and run it at the rate, with a smooth speed up and down, that is why carding machine running steadily and reliably for making carding wool
Textile yarn tester is test equipment which test textile yarn mohair yarns, polyester yarn, yeoman yarns for measuring optimum quality as these are quality tested by efficient auditors on various parameters. Only after they are assured of the quality aspect of these products, then only the professionals dispatch about the products to the market.
Specifications of Reel Wraps Yarn Tester for Textile Yarn:
[label type=”label” title=”Specifications Name”]
[label type=”label” title=”Specifications Value”]
Product Category
Yarn
Machine Category
Yarn Testing Machine
Product Name
Reel wraps for Yarn Length Testing
Product Model
According to Manufacturer
Product Class
New
Origin
China/India/Others
Brand/Manufacturer
Name of Manufacturer
Agent in Bangladesh
No/Yes
Power
AC220V 50Hz 100W
Temperature
Normal
Certification
SGS/Others
Production Capacity
NA
Test yarn fray
6 frays
Reel circumference
1000mm (metric system)(YG086D)
Spacing of yarn
60mm
Girth of yarn frame
1000 ±1mm
DimensionsL*W*H
780 mm×660mm × 480mm
Rev of reel
25-300 RPM (numeric pre-settable)
Interval of spindle
65mm
Number of wrap
2~9999 Rev(pre-settable)
Programmable stop
1~9 rev(pre-settable)
Reeling pre-tension
0~100cN (pre-settable)
Instrument weight
50kg
Description
This Electronic Reel wraps is designed to produce skeins of yarn of a pre determined length and number of turns for count and strength testing
What is Mohair Yarn Testing:
Mohair yarn occupies the intermediate position in the manufacture of fabric from raw material. Yarn results are essential for both estimating the quality of raw material and for controlling the quality of fabric produced. The important characteristics of yarn being tested are described below shortly-
Yarn twist
Linear density
Yarn strength
Yarn elongation
Yarn evenness
Yarn hairiness etc.
Twist Yarns:
Twist of yeoman yarns are called turns which is twisting the fiber.
Linear Density of Yarn:
The excellence of the yarn is usually expressed in terms of its linear thickness. There are a amount of systems and units for expressing yarn fineness. But they are categorised as follows
Direct system
Indirect System
Checking More Testing:
Uneven shade
Oil spot
Neps
Crease mark
Machine Stoppage mark
Listing
Line mark
Pick missing
Double yam
Dead cotton
Bowing
Fly yam contamination
Experiment Name: To measure the wash fastness.
The “color fastness” of a colored textile is defined as its resistance to these changes when subjected to particulates of conditions. It follows that color fastness must be specified in terms of these changes and expressed in terms of the magnitude.
Color-fastness to wash:
Wash-fastness is perhaps the most common once to be carried out: It is necessary to bear in mind that there are two types of wash
Domestic wash
Industrial wash
Which can be carried out with different of severity and for this reason there are 5 normalized types of with soap and at least 16 normalized washing tests for domestic and commercial laundering using a standard detergent.
The different characteristics are indicated in the table below:
Characteristics of test for fastness to washing with soap
Now we shall describe washing test no. 1 as an example to explain the mode of the operation.
If the sample adjusted to the test is fabric a rectangular measuring I0x4 cm- is cut out and placed the multifibre of the same size. The, composite specimen is placed in a container of the sample dyeing machine along with a soapy solution with a liquor ratio 1:50. The machine is started and the sample is streed 30 min
Buyer’s Requirements:-
ECHO SCOURING: ISO 105 C06 A2S 40’C
DECATHLON ISO 105 C06 60-C
CARRE FOUR ISO 105 C06
WELL L L ORD ISO 105 C06 A2S 40-C
EURO CENTRA ISO 105 C06 A2S 40’C
Required materials:-
Sample size 10×2 cm.
Multi fiber at 10×2 cm
ECE detergent (WOB)
Sodium per-borate
5, Distilled water
Normal cold water
Steel balls
Required instrument:
Sample dyeing machine
pH meter (where necessary)
Scissor
Stitch machine
Procedure:
Cut sample & multifibre at I Ox2 cm and then Stitch
4 g/l ECE detergent (WOB) + 1~ I Sodium-pr borate put in distilled water & cooled at 20C and measure p (where necessary)
Run the program in the following way:
Rinse the sample twice with cold water.
Dry at 60C by hanging or by Flat iron pressing but temperature should not be more than 150C.
Experiment Name :To measure the color-fastness to water.
Buyer’s Reguirements :
ECHO SCOURING: ISO 105: 1996 EOI
DECATHLON: ISO 105: 1996 EOI
CARRE FOUR: ISO 105: 1996 E02
WELL LORD ISO 105: 1996 EOI
EURO CENTRA: ISO 105: 1996 EO, I
Procedure:
Sample size: Cut the specimen & the multifibre at 10×2 cm & sewn together.
Solution: Wet in distilled water at room temperature & socked but only for CAREE FOUR wet in 30g/l Nacl Solution at room temperature & socked.
Place it in acrylic resin plates & put the weight on to the plates.
Keep it in oven and kept the temperature at 3 7± 02’c for 4 hrs.
Open the specimen and dry it in the air not exceeding 60’c temperature.
Assess the staining & shade change with grey scale.
Experiment Name :To measure the fastness to perspiration acid and alkaline.
Buyer’s Reguirements:-
LDECATHLON: ISO 105: 1996 E04
CARRE FOUR: ISO 105: 1996 E04
WELL LORD ISO 105: 1996 E04
EURO CENTRA: ISO 105: 1996 E04
Experiment Name: To measure the fastness to rubbing (Dry & Wet).
Buyer’s Requirements:-
L ECHO SOURCHING: ISO 105 X 12
2 DECATH-LON ISO 105 X 12
CARREFOUR ISO 105 X 12
WELL LORD ISO 105 X 12
EURO CENTRA ISO 105 X 12
Procedure:
Rubbing cloth: Take rubbing cloth at 5×5 cm size
Sample size: Take the specimen at 14×5 cm at wales wise and course wise
Put the rubbing cloth on to the grating and stag by steel wire and run ten times manually and assess the rubbing cloth with grey scale.
Place the rubbing cloth on the water and socked and squeeze. Place the wet rubbing cloth on to the grating and stag with stainless steel wire and run ten times manually. then assess the staining on to the rubbing cloth by grey scale for wet rubbing.
Experiment Name: To measure the pilling of the given fabric.
Please not that all test specimens should be conditioned at 65 ± 5 R.H. 20 20′ c temperature. For 16 hrs & 2 hrs for polyester fabric. If customer demand then prior to test specimen should be washed at least 15 min & then dry and then try to start for testing.
Procedure:
Cut the fabric 12.5 x 12.5 cm & benchmarks should be 10 cm by using template.
Then sewn the fabric so that it can be firmly fit in to the tube a moulded polyurethane tube.
Then four tubes are placed in a box and start 60 ± 02 rev/min for at least 5 hours or according to the buyer requirements.
Then assess the pilling by putting tested specimens at the view cabinet and compare with standard photograph.
Experiment Name: To measure the dimensional stability (Shrinkage & spirality Buyer’s Requirements :
Conditioning: Put the sample in table for 4 hrs for conditioning before starting test.
Cut the sample 50×50 cm & benchmark should be 35×35 cm. Stitch the sample (3 sides) by over lock sewing machine.
Put sample in washing machine in the following ways for different buyer:
ECHO: Gentle Wash Temp 40 ± 3C (washing +4 Rinse +3 Spin) total 30 min.
DECATHLON: Normal Wash Temp. 40 ± 3 C (washing +4 Rinse +3 Spin) total 30 min.
iii. CAREE FOUR: Normal Wash Temp. 40 ± 3C (washing +4 Rinse +3 Spin) total 30 min.
WELL LORD: According to care label if mentioned or Normal Wash Temp. 40 ± 3 C (washing +4 Rinse +3 Spin) total 30 min.
EURO CENTRA: According to care label if mentioned or Normal Wash Temp. 40 ± 3C (washing +4 Rinse +3 Spin) total 30 min.
SQURE: Gentle Wash Temp 50 ± 3′ C (washing +4 Rinse +3 Spin.) total 30 min.
Drying: All Buyers’ requirement is tumble Dry except ECHO SCOURING is flat dry.
Shrinkage test calculation
Spirality test calculation :
Suppose,
A = The right side distance of the specimen from the stitch line after wash
B = The left side distance of the specimen from the stitch line after wash.
Experiment Name: To measure the fastness to light with the Megaosol light fastness tester Procedure:
Cut the four pieces of test specimens according to the length & width wise and attached with the specimen holder.
Then the holder set in to the Megasol light fastness tester.
Then the experiment continued at 72 hours according to the buyer’s requirement.
After 72 hours later the specimen taken from the light fastness tester.
Then the test specimen compare with the Blue scale or computer.
Experiment Name: To measure the GSM of the fabric by GSM cutter.
Procedure:
Cut the fabric with the GSM cutter (gram per square inch).
Weight the fabric with the electric balance.
Suppose,
The weight of the fabric 2.51 gm. That means the GSM of the fabric is 251. Because when we cut the fabric with the GSM cutter then we get I from the 100 meter from the square meter.
Experiment Name: To measure the CPI & MTI with the magnifying glass setting
multiplier.
Procedure:
Take the fabric& marking I inch with the ball pen according to the course& wales wise
of a knitted fabric.
Then set the marking point with the multiplier scale & counting the CPI & WPI of knitted fabric in l inch.
Recipe Calculation:
Dyeing solution (all classes of reactive dyes):
Water: 840 CC
Cibacel DBC: 60 CC
Ciba flow C: 20 CC
Ergasol CO: 40 CC
Lioptan R/G: 40 CC
Total : 1000 CC
Dyeing solution (all classes of reactive dyes):
Water : 880 CC
Invadine DIF/DP: 40 CC
AB45: 80 CC
Total: 1000 CC
L:R = 1:8
Fabric weight: 5 gin
Soda ash solution: 10 % (Prepared in to lab)
Soap solution: (Prepared in the lab)
Cibacron R = 1 gm/l
Cibacel DBC = 0. 5 gm /l
L: R = 1:20
Acetic acid = 0. 5 gm/l
Textile Yarn Strength And Elongation:
Breaking strength and elongation is important factors for representing the performance of the polyester yarn.
Single end strength
Skein strength for reel wraps
[1] Thambi Durai, B.Tech. Textile Technology, Park College of Engineering and Technology, Kaniyur-India
Slitting machine or slitter is an industrial equipment is used for tubular fabric for making it to open form finishing line by machine operator for textile design. Slitting is a special process that is useful for cutting the tubular cloth through cut or laser cut machine direction prior to stenter machine and open width compactor machine. During slitting by slitter machine it is necessary to be very attentive about the cutting line or else, cloth faults can be occurred there any time. It is used also for textile design. Slitting is a process which is applied for cutting the tubular fabric through the intended break wales line or lengthways direction prior to Stenter processing
Parts of this Industrial Equipment:
The parts are listed below-
Slitter Parts
Rotary blade
Laser cut blade
Plaiting
Ring
Guide Roller
Sensor
Function of Slitting Machine for Laser Cut:
The functions of the machine are listed below-
Slitting Machine
GSM of cloth can control by machine operator for textile design
It can control the diameter of fabric by slitter machine operated by machine operator,
This industrial equipment use for removing excess water
This industrial equipment use after pretreatment and dyeing.
This industrial equipment slit tubuler cloth by the knife
Fabric diameter can control by this industrial equipment,
Slitting Machin use for preparing the cloth for stenter machine and open width compactor,
Twisting unit of slitter removes of cloth
Specifications of Slitter for Tubular Fabric:
The specification of the machine is listed below-
[label type=”label” title=”Specifications Name“]
[label type=”label” title=”Specifications Value“]
Product Category
Cutting
Machine Category
Slitting Machine / Slitter
Product Name
Slitting Machine for Tubular cloth
Product Model
According to Manufacturer
Product Class
New
Origin
China/India/Others
Brand/Manufacturer
Industrial equipment
Agent in Bangladesh
No/Yes
Power
7.5KW
Temperature
Normal
Certification
SGS/Others
Production Capacity
NA
Width of Roller
80″~120″
Main Motor
2HP gearmotor + 2HP inverter
Outer Motor
2HP gearmotor + 2HP inverter
Working Speed
0~100yards/min
De-twisting control
automatically or manually
Dimensions (LxWxW)
7400mm*3500mm*6500mm
Weight
1380kg
Description
Dual functions for opening tubular cloth after dyeing and automatic rope opening machine is equipped with stainless steel detwister
Abnormalities seen in the Finishing Process:
Slitter Machine –Operators diligence & concentration should be at the highest level when operating a Sutter slitter m/c. no negligence case was seen in the spot.
Dewater m/c- Air pressure is the main object to be considered. Less air quantity in the fabric tube can create crease mark. So there is always a crease mark area formed near the swatch cut as air comes out from that point. Some negligence has been seen here. The operators sometimes fail to maintain the proper air pressure.
Stenter Machine – One temperature sensor is not working. Continuous problem with a burner was observed. Fabric guiding roller sensor is not working properly.
Tensionless Dryer- cooling fan of the control panel is not working. So a stand fan is been used here. Fabric centering guide is not functioning properly. No negligence case was seen here.
Process Requirements of Slitter
Equipment used
Following equipment is used for slitting process :
Airtex Slitter Machine (Sweden).
Key Accessories
Following key accessories are used for slitting process :
Scissors
Sewing machine
Sewing thread
Trolley
Cutting blade
Measuring tape, etc.
Materials / Chemicals Used
Not applicable.
Safety of Slitter Mc
Following Do’s and Don’ts are to be followed during operation :
Do not wear loose dress that may entangle with the machine parts while running.
Always wear rubber shoes.
Be careful about the circular cutting blade.
Do not insert hands between the rollers during running the machine.
Be careful in handling the trolley of fabrics.
Be aware of the first aid treatment procedure.
Operation Procedure of Slitting Machine
Operation Staff
Operation stuffs of Slitting Process includes:
Manager
Textile Technologist / Production Executive
Production Co-ordinator
Machine Operator
Assistant Operator
Checklist Before Operation
Operator must check the following items before slitting the fabric in the Slitter machine:
Machine parameters are set.
Required manpower is available for feed side and delivery side.
Feed side fabric is set in the round trolley.
Empty trolley is set for delivery side.
Sewing machine is set at the delivery side to stitch the unstitched rolls of the fabric.
Operation Procedure
The operator fixes the trolley on the turning table and picks up the fabric in a round trolley, then following a standard operating passage way he starts the machine for slitting that fabric.
Product Quality Check
Design Check: Operator checks the design of fabric at delivery side and matches with the required design as specified in the batch card.
Fabric Bow & Slant Check: Operator checks the bowing and slanting of fabric at delivery side. If any abnormality is found, he adjusts the machine. If he fails to make that straight, he informs to shift officer to take the necessary action(s).
Fault Check: The operator checks the knitting fault (i.e. Double yarn, missing yarn, yarn contamination, etc.), spinning faults (i.e. Thick & thin yarn, barre mark etc.), and other faults (i.e. Dye stain, bend mark, chemical stain, torn & hole, shade variation, etc.) during the process. When minor faults occur within 2-3 rolls which is not resulted from previous process and also not recorded on the batch card, the necessary actions to be taken are as follows :
Checks the feed side fabric to make sure that these faults did not occur from the previous process.
Stop the machine to identify the place where from this faults are occurring.
Response to Equipment Faults
Following are the response to be taken in case of equipment fault of Slitting machine:
Machine Faults
Response
Turn Table Problem
Mechanical Engineer should be called
Forwards/reverse Problem
Electrical Engineer should be called
Speed Potentiometer Problem
Electrical Engineer should be called
Basket Moving Problem
Mechanical/Electrical Engineer should be called
Plaiter Problem
Mechanical Engineer should be called
Circular Cutting Blade Problem
Mechanical Engineer should be called
Slitting Machine /Area Cleaning
The daily and weekly cleaning works for Slitting Machine are described below:
Clean the sieves that can be reached from the outside of the machine at least once per shift
Clean the moving basket properly after each batch.
Clean all the rollers properly after each batch.
The Maintenance Department performs the preventive maintenance task as per the PM schedule. Refer to Maintenance Specification for details.
Applicable Forms & Documents
Forms & Documents Used
The necessary forms & documents for Slitting process are listed below :
Process Batch Card
Machine Downtime Report
Production Register of Slitter Machine
Document Flow
The document flow of Finishing Process is as follows :
Operator fills out the Batch and the concerned officer put his signature on it upon verification. The Batch Card moves with the fabric for the next step of finishing process. (i.e. Stenter).
Machine Downtime Report is maintained to keep record of any stoppage in production due to machine break down or any other reason. Operator fills this and the responsible officer sign on it upon verification
Production Register of Slitter Machine is used to keep records of date wise production details. Operator fills this out along with his remarks (if any) and this report is recorded for future reference.
Attachments
Examples of all applicable forms and documents are attached.
SleetingMachine Maintenance:
Frequency
Maintenance Criteria
Weekly
Check and clean dust form all motor fan cover
Check all motors’ terminals
Check tension of all chains and adjust if required
Grease all the bearings
Monthly
Check current setting of motors’ overload relays
Check all ON/OFF switches
Check the oil level of Gear box and refill it if required
