CN105088597B - A kind of method for improving one side TPU compound fabric flatness - Google Patents
A kind of method for improving one side TPU compound fabric flatness Download PDFInfo
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- CN105088597B CN105088597B CN201510578528.1A CN201510578528A CN105088597B CN 105088597 B CN105088597 B CN 105088597B CN 201510578528 A CN201510578528 A CN 201510578528A CN 105088597 B CN105088597 B CN 105088597B
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Abstract
The present invention is easily bent, is difficult to carry out the technical problem of next procedure operation and provide a kind of method for improving one side TPU compound fabric flatness to solve print clot after cutting is sampled.The technical solution used in the present invention is：A kind of method for improving one side TPU compound fabric flatness, mainly increases following steps in TPU compound fabric production processes between bottoming step and TPU overlay film steps：Step (1), coiled treatment；Step (2), maturation process；Step (3), TPU overlay film pre-treatments；Because the present invention is using as above technical scheme, after taking curing and the treatment of pre-humidifying, coated fabric outwards extends and the contraction of moisture absorption sagging produced power with TPU membrane forms a kind of power for balancing each other so that TPU compound fabrics are not in the phenomenon of curling or out-of-flatness, the operation of operation after being easy to, while not interfering with the laminating fastness and other performances of TPU products.
Description
Technical field
It is more particularly to a kind of to improve one side TPU compound fabrics the invention belongs to spinning coating fabric processing technique field
The method of flatness.
Background technology
TPU (Thermoplastic polyurethanes) entitled TPUE, with intensity it is high,
The characteristic such as good toughness, wear-resisting, cold-resistant, ageing-resistant, weatherability, be both also have water proofing property penetrability high, windproof, cold-proof, antibacterial,
Many excellent functions such as mould proof, warming, uvioresistant and energy release, in commodity, sports goods, toy, decoration material
It is used widely in the fields such as material.TPU compound fabrics are exactly to be compounded in form a kind of composite wood on various fabrics with TPU film
Material, a kind of novel fabric is obtained with reference to both characteristics.
In conventional TPU compound fabric production processes, fabric first passes through scraper blade coating bottoming, forms coated fabric；So
Gained coated fabric after bottoming is directly sent at TPU extrusion casting apparatus afterwards, is carried out the TPU needed for composite film-stuck is formed and is combined
Fabric.Although the product laminating intensity so produced is higher, often exists and cut print clot after sampling, it is easily curved
It is bent, be difficult to carry out the defect of next procedure operation.
The content of the invention
The present invention to solve to cut print clot after sampling, ask by the technology be easily bent, being difficult to carry out next procedure operation
Inscribe and a kind of method for improving one side TPU compound fabric flatness is provided.
The technical solution used in the present invention is：A kind of method for improving one side TPU compound fabric flatness, mainly exists
Increase following steps between bottoming step and TPU overlay film steps in TPU compound fabric production processes：
Step (1), coiled treatment：On axle, then be placed on for web and unreeled by gained coated fabric volume after bottoming
On frame, curing chamber is pushed；
Step (2), maturation process：A humidifier is placed in curing chamber, watt level can be according to the size of curing chamber
Depending on, open humidifier carries out pre-add wet process to coated fabric；
Step (3), TPU overlay film pre-treatments：After machine sets, before proceeding by overlay film, will be first watered in humidifier,
Humidifier normally runs in ensuring production process, and the thin and thick according to coated fabric adjusts the size of humidifier water smoke；Then will add
Wet device is placed on apart from the place of machine infrared radiation 0.8-1.5m, is prepared as the non-coat side humidification of coated fabric, then starts to cover
Film is produced.
Preferably, coiled rice number is 1000-5000m in the step (1).
May well cause very much curing not thorough into coil diameter, influence pre-humidifying effect；It is too small into coil diameter and can reduce
Production efficiency；Preferably, coiled a diameter of 50-100cm in the step (1).
Curing effect well is can reach at normal temperatures, therefore for energy saving, curing chamber room in the step (2)
Interior temperature is normal temperature.
Preferably, curing chamber indoor humidity is 30%-90%RH (relative humidity) in the step (2).If humidity
Too low, then flatness improvement is not good；If humidity is too high, TPU compound fabrics other performances can be reduced.
Preferably, in the step (2) curing time be 24h.
The improvement principle of method that the present invention improves one side TPU compound fabric flatness is：Fabric is carrying out coating bottoming
During, by 150 DEG C -200 DEG C bake of high temperature, the yarn of fabric has shunk to varying degrees, in order that coating
Fabric recovers the original state of yarn by being tried one's best after bottoming, and pre-humidifying is first carried out to it expands yarn.In order that pre-humidifying
Effect is better, so it is too big to be tried not into coil diameter, in case curing is not thorough.First during TPU overlay films are carried out
100 DEG C -180 DEG C of infrared heating is carried out to coated fabric, actual temp is set according to different coating fabric.Though infrared heating
So make the cloth cover of coated fabric more smooth, laminating fastness is more preferable, but the non-overlay film face of coated fabric can further shrink.For
Ensure that the amplitude that coated fabric shrinks is less big, be again in advance that it is humidified with humidifier, keep after overlay film cooling as far as possible before
Yarn change afterwards is little.Play a part of to extend coated fabric yarn and moisture absorption aggravates.And TPU membrane is thermoplastic poly
Urethane elastic membrane, the temperature of film weight scope film when (30-250g/ ㎡) fits with coated fabric is higher, and ductility is larger,
TPU membrane can crystallize contraction after the cooling period.If not carrying out pre-add wet process to coated fabric, because the contraction of TPU membrane will go out
The phenomenons such as existing TPU compound fabrics alice, curling.The product relatively thin for coated fabric is especially apparent.Take curing and pre-add
After wet treatment, coated fabric outwards extend and moisture absorption it is sagging produced by power and the contraction of TPU membrane form a kind of balancing each other
Power is so that TPU compound fabrics are not in the phenomenon of curling or out-of-flatness.
The present invention has the advantages and positive effects that：Because the present invention is using as above technical scheme, take curing and
After the treatment of pre-humidifying, coated fabric outwards extends and the sagging produced power of moisture absorption forms a kind of equal with the contraction of TPU membrane
The power of weighing apparatus is so that TPU compound fabrics are not in the phenomenon of curling or out-of-flatness, it is easy to the operation of operation later, while will not
Influence the laminating fastness and other performances of TPU products.
Specific embodiment
Embodiment 1
A kind of method for improving one side TPU compound fabric flatness, the mainly bottoming in TPU compound fabric production processes
Increase following steps between step and TPU overlay film steps：
Step (1), coiled treatment：By gained coated fabric volume after bottoming on axle, 1000 meters of coiled rice number, into coil diameter
Size according to the thin and thick of fabric determine.Then web is placed on unwinding rack, pushes curing chamber.
Step (2), maturation process：A humidifier is placed in curing chamber, watt level can be according to the size of curing chamber
Depending on.Open humidifier carries out pre-add wet process to coated fabric.Indoor temperature：Normal temperature.Indoor humidity：30%RH.During curing
Between：24h.
Step (3), TPU overlay film pre-treatments：After machine sets, before proceeding by overlay film, will be first watered in humidifier,
Humidifier normally runs in ensuring production process, and the thin and thick according to coated fabric adjusts the size of humidifier water smoke, general coating
Fabric than relatively thin, crimp than it is more serious the water smoke of humidifier should be adjusted it is larger, what can conversely be adjusted is smaller, can
Depending on actual conditions.Then humidifier is placed on apart from the place of machine infrared radiation 0.8m, is prepared as coated fabric not
Coat side is humidified, and then starts overlay film production.Humidifier will be always maintained at humidification state in process of production, coated fabric is existed
Humidification is always maintained at when passing through above humidifier.The effective width of humidifier must be consistent with the breadth of coated fabric.
Embodiment 2
A kind of method for improving one side TPU compound fabric flatness, the mainly bottoming in TPU compound fabric production processes
Increase following steps between step and TPU overlay film steps：
Step (1), coiled treatment：By gained coated fabric volume after bottoming on axle, coiled rice number 5000m, into coil diameter
Size according to the thin and thick of fabric determine.Then web is placed on unwinding rack, pushes curing chamber.
Step (2), maturation process：A humidifier is placed in curing chamber, watt level can be according to the size of curing chamber
Depending on.Open humidifier carries out pre-add wet process to coated fabric.Indoor temperature：Normal temperature.Indoor humidity：90%RH.During curing
Between：24h.
Step (3), TPU overlay film pre-treatments：After machine sets, before proceeding by overlay film, will be first watered in humidifier,
Humidifier normally runs in ensuring production process, and the thin and thick according to coated fabric adjusts the size of humidifier water smoke, general coating
Fabric than relatively thin, crimp than it is more serious the water smoke of humidifier should be adjusted it is larger, what can conversely be adjusted is smaller, can
Depending on actual conditions.Then humidifier is placed on apart from the place of machine infrared radiation 1.5m, is prepared as coated fabric not
Coat side is humidified, and then starts overlay film production.Humidifier will be always maintained at humidification state in process of production, coated fabric is existed
Humidification is always maintained at when passing through above humidifier.The effective width of humidifier must be consistent with the breadth of coated fabric.
Embodiment 3
A kind of method for improving one side TPU compound fabric flatness, the mainly bottoming in TPU compound fabric production processes
Increase following steps between step and TPU overlay film steps：
Step (1), coiled treatment：By gained coated fabric volume after bottoming on axle, into coil diameter 50cm.Then will be coiled
Fabric is placed on unwinding rack, pushes curing chamber.
Step (2), maturation process：A humidifier is placed in curing chamber, watt level can be according to the size of curing chamber
Depending on.Open humidifier carries out pre-add wet process to coated fabric.Indoor temperature：Normal temperature.Indoor humidity：50%RH.During curing
Between：24h.
Step (3), TPU overlay film pre-treatments：After machine sets, before proceeding by overlay film, will be first watered in humidifier,
Humidifier normally runs in ensuring production process, and the thin and thick according to coated fabric adjusts the size of humidifier water smoke, general coating
Fabric than relatively thin, crimp than it is more serious the water smoke of humidifier should be adjusted it is larger, what can conversely be adjusted is smaller, can
Depending on actual conditions.Then humidifier is placed on apart from the place of machine infrared radiation 0.9m, is prepared as coated fabric not
Coat side is humidified, and then starts overlay film production.Humidifier will be always maintained at humidification state in process of production, coated fabric is existed
Humidification is always maintained at when passing through above humidifier.The effective width of humidifier must be consistent with the breadth of coated fabric.
Embodiment 4
A kind of method for improving one side TPU compound fabric flatness, the mainly bottoming in TPU compound fabric production processes
Increase following steps between step and TPU overlay film steps：
Step (1), coiled treatment：Gained coated fabric volume after bottoming on axle, is advisable into coil diameter 100cm.Then
Web is placed on unwinding rack, curing chamber is pushed.
Step (2), maturation process：A humidifier is placed in curing chamber, watt level can be according to the size of curing chamber
Depending on.Open humidifier carries out pre-add wet process to coated fabric.Indoor temperature：Normal temperature.Indoor humidity：90%RH.During curing
Between：24h.
Step (3), TPU overlay film pre-treatments：After machine sets, before proceeding by overlay film, will be first watered in humidifier,
Humidifier normally runs in ensuring production process, and the thin and thick according to coated fabric adjusts the size of humidifier water smoke, general coating
Fabric than relatively thin, crimp than it is more serious the water smoke of humidifier should be adjusted it is larger, what can conversely be adjusted is smaller, can
Depending on actual conditions.Then humidifier is placed on apart from the place of machine infrared radiation 1.5m, is prepared as coated fabric not
Coat side is humidified, and then starts overlay film production.Humidifier will be always maintained at humidification state in process of production, coated fabric is existed
Humidification is always maintained at when passing through above humidifier.The effective width of humidifier must be consistent with the breadth of coated fabric.
Comparative example
Fabric first passes through scraper blade coating bottoming, forms coated fabric；Then gained coated fabric after bottoming is directly sent to
At TPU extrusion casting apparatus, carry out composite film-stuck and form TPU compound fabrics.
Test result
1st, testing flatness
Respectively with conventional coated fabric and relatively thin coated fabric (such as 75D brocades silk, 190D taffetas, 230T Buddhist nun's silk
Spin, the coated fabric such as 210T Nylon Taffetas and some conventional 210D oxfords, 420D oxfords, 840D oxfords) for raw material is adopted
One side TPU compound fabrics are prepared into embodiment and comparative example method, and carry out testing flatness.Test condition is：In room temperature,
Indoor relative humidity tears embodiment and comparative example gained one side TPU compound fabrics along warp-wise in the case of 20%-60%RH
Into a 30-50cm long, the rectangle test specimens of 5-10cm wide cut 5 pieces of samples per banner, TPU face up be placed on it is smooth
A period of time is stood on desktop, observation test sample is along the upward alice in warp-wise both sides, crimping situation.
Test result shows, the one side TPU compound fabrics both sides being prepared from conventional coated fabric in comparative example method
Alice angle is at 5 ° -60 °；There is volume in the one side TPU compound fabrics being prepared from relatively thin coated fabric in comparative example method
Song is more than 180 ° in cylinder phenomenon, i.e. alice angle；The one side TPU being prepared from conventional coated fabric in embodiment method is combined
Fabric membrane focuses on the product between (30-80g/ ㎡), and flatness is very well, not curled；Film focuses on the product between (80-150g/ ㎡)
Product, flatness is very well, not curled；Film focuses on the product between (150-250g/ ㎡), and flatness is preferably, not curled；Embodiment side
The one side TPU compound fabrics being prepared from relatively thin coated fabric in method, it may appear that slight alice phenomenon, 5 ° -10 ° it
Between, but do not interfere with later operation.
2nd, other performance tests
Stripping fastness, ultimate strength, heat seal strength and the trapezoidal survey torn are carried out to embodiment and comparative example gained finished product
Examination, different for different coated fabric raw material gained finished product test concrete numerical values, variation tendency is approximate；With 230T white Buddhist nun's silks
It is the 230T white Nylon Taffeta TPU compound fabrics that raw material is prepared into using embodiment 1-4 and comparative example method to spin coated fabric
As a example by illustrate, test result is as shown in table 1.
Table 1
By test result as can be seen that the one side TPU composite fabric products of the inventive method preparation are smooth not curled, easily
In the operation of later operation, while not interfering with the laminating fastness and other performances of TPU products.
Several embodiments of the present invention have been described in detail above, but the content is only preferable implementation of the invention
Example, it is impossible to be considered as limiting practical range of the invention.All impartial changes made according to the present patent application scope and improvement
Deng all should still belong within patent covering scope of the invention.
Claims (6)
1. it is a kind of improve one side TPU compound fabric flatness method, it is characterised in that in TPU compound fabric production processes
Increase following steps between bottoming step and TPU overlay film steps：
Step (1), coiled treatment：On axle, then is placed on web on unwinding rack by gained coated fabric volume after bottoming,
Push-in curing chamber；
Step (2), maturation process：A humidifier is placed in curing chamber, open humidifier carries out pre-humidifying to coated fabric
Treatment；
Step (3), TPU overlay film pre-treatments：After machine sets, before proceeding by overlay film, will be first watered in humidifier, it is ensured that
Humidifier normally runs in production process, and the thin and thick according to coated fabric adjusts the size of humidifier water smoke；Then by humidifier
It is placed on apart from the place of machine infrared radiation 0.8-1.5m, is prepared as the non-coat side humidification of coated fabric, then starts overlay film life
Produce.
2. it is according to claim 1 it is a kind of improve one side TPU compound fabric flatness method, it is characterised in that：It is described
Coiled rice number is 1000-5000m in step (1).
3. it is according to claim 1 it is a kind of improve one side TPU compound fabric flatness method, it is characterised in that：It is described
Coiled a diameter of 50-100cm in step (1).
4. it is according to claim 1 it is a kind of improve one side TPU compound fabric flatness method, it is characterised in that：It is described
Curing chamber indoor temperature is normal temperature in step (2).
5. it is according to claim 1 it is a kind of improve one side TPU compound fabric flatness method, it is characterised in that：It is described
Curing chamber indoor humidity is 30%-90%RH in step (2).
6. it is according to claim 1 it is a kind of improve one side TPU compound fabric flatness method, it is characterised in that：It is described
The curing time is 24h in step (2).
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