CN101509313A - Thermoplastic polyurethane floor tile and technique for producing the same - Google Patents
Thermoplastic polyurethane floor tile and technique for producing the same Download PDFInfo
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- CN101509313A CN101509313A CNA2009101112821A CN200910111282A CN101509313A CN 101509313 A CN101509313 A CN 101509313A CN A2009101112821 A CNA2009101112821 A CN A2009101112821A CN 200910111282 A CN200910111282 A CN 200910111282A CN 101509313 A CN101509313 A CN 101509313A
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Abstract
The invention provides a thermoplastic polyurethane floor tile and a producing technique thereof. The floor tile comprises a wearing layer, a printing layer and a base layer, which are compounded together from top to bottom in sequence to be integral, wherein the wearing layer is made of TPU sheets with the thickness of 0.1-2.0mm, the printing layer is made of TPU films with the thickness of 0.05-1.0mm and patterns on the surface, and the base layer is made of sheets mixed and rolled by TPU and rock flour. The producing technique is completed by the following steps: layered material processing, hot pressure laminating semi-finished products slotting and trimming, cleaning and packaging. The hot compounded floor tile of the invention produced by fully using the physical and chemical properties of the thermoplastic polyurethane has characteristics of high surface hardness, wearing resistance, skid resistance, no moisture absorption, no mould, good glossiness, abundant patterns, light weight, simple and convenient construction and recyclability.
Description
Technical field
The invention belongs to building material field, particularly a kind of thermoplastic polyurethane floor tile and production technology thereof.
Background technology
Recently, along with the progress of composite material and the improvement of processing technology, plastic floor tile of all kinds occurs, with light weight, lay convenience, surface abrasion resistance, thin thickness and performances such as high resilience, alternative part ceramic tile and marmorean share in the past extensively applies to public and interim occasion.Existing plastic floor tile adopts PVC materials processing to form mostly, and the surface is printed with various patterns and texture, satisfies the different aesthetic requirements of people.Though but the PVC floor tile has reduced the content of heavy metal when selection, reduced unwanted volatile.But because PVC is a kind of chloride hydrocarbon, polyvinyl chloride is the thermoplasticity line style resin that generated through sudden reaction by monomer vinyl chloride (its structural formula is [-CH2-CHCl] n]), because the architectural characteristic of itself, in process, must add plasticizing agent (generally being DOP, DOA, DINP etc.), these add the phenol that all contains varying number in the plasticizing agent, long-term contact meeting can produce adverse effect to the nervous system and the urinary system of human body, particularly directly use the child on Body contact ground, particularly serious; The PVC product has pungent smell in process in addition, and the human respiratory tract is had a direct impact, also easy contaminated environment, and PVC can burn and emit HCl on flame, can cause the PVC variable color behind the release HCl; Though PVC moulds floor tile can recycling, once running off or abandon, can natural decomposition under natural environment, cause the eternal pollution of environment; The low temperature resistant limit of PVC can only reach-10 ℃, and proportion is heavier to be 1.3-1.4; Because its elastic performance is not best, easily jackknifing, all these all do not meet international environmental protection ROHS requirement, and human body and environment are caused direct adverse effect.Select alternative plastic sheet suitable and that satisfy environmental protection and human body safety promptly to become the target that the dealer pursues for this reason.Along with a kind of loopful is protected material---thermoplastic polyurethane material's the development and the reduction of cost, with and the progressively embodiment of excellent properties, how to utilize the thermoplastic polyurethane material to process the object that floor tile promptly becomes the present invention's research.
Summary of the invention
The purpose of this invention is to provide a kind of thermoplastic polyurethane floor tile and production technology thereof; Make full use of the physics and the chemical characteristic of thermoplastic polyurethane, the wood floor bolck that heat is combined into, have the case hardness height, wear-resisting, anti-skidding, nonhygroscopic, do not go mouldy, glossiness is good, pattern is abundant, and in light weight, easy construction, recyclable characteristics.
Thermoplastic polyurethane floor tile of the present invention, comprise the wearing layer, printed layers and the basic unit that are combined with each other, it is characterized in that: be combined into one by wearing layer, printed layers and basic unit successively from top to bottom, wherein wearing layer is the TPU sheet material, and thickness is between 0.1mm-2.0mm; Printed layers is the TPU film, and thickness is between 0.05mm-1.0mm, and the surface is printed with pattern texture; Basic unit is TPU and stone flour (CaCO
3) mix the sheet material of calendering by a certain percentage. be the needs of control product rerum natura, the basic unit of this product is divided into two-layer composition, and the boundary is referred to as middle initial bed between printed layers and initial bed, the bottom be referred to as initial bed.
When TPU was brand-new material: its formula rate was as follows:
Middle initial bed: TPU: CaCO
3=20-30kg: 70-80kg.
Initial bed: TPU: CaCO
3=32.5-42.5kg: 56.5-66.5kg.
When TPU is the compound of brand-new material and reclaimed materials, according to parts by weight: 50 parts of TPU virgin material+50 part TPU reclaimed materials are mixed into 100 parts of TPU compounds, and compound is divided into two parts, fills a prescription to be:
Middle initial bed: 50 parts of TPU compound+122-132 part stone flour (CaCO
3)
Initial bed: 50 parts of TPU compound+62-72 part stone flour (CaCO
3)
When TPU all adopts reclaimed materials, according to parts by weight:
Middle initial bed: 50 parts of TPU reclaimed materials+105-110 part stone flour (CaCO
3)
Initial bed: 50 parts of TPU reclaimed materials+56-61 part stone flour (CaCO
3)
Thermoplastic polyurethane floor tile of the present invention produces by following processing step:
A) layered material processing
Wearing layer: by the extrusion casting apparatus, process wear-resisting layered material by design thickness, and precut into sheet material, be up to the standards, 1500 or 2000 neatly repeatedly are placed on the pallet stand-by;
Printed layers: adopt blow moulding equipment or extrusion curtain coating to process printed layers, adopt the printing process of selecting of hectographic printing, serigraphy or intaglio printing on its surface, be printed with pattern texture by design thickness,
And precut into sheet material, and be up to the standards, 1500 or 3000 neatly repeatedly are placed on the pallet stand-by; Basic unit: adopt successively
1) mixed processes: adopt the high-speed mixing mixing plant, drop into raw material with feeding sequence in proportion, ordering in launching is to drop into TPU raw material or block reclaimed materials, stone flour (CaCO then earlier
3);
2) banburying operation: banburying is to finish by ten thousand horsepowers (they being fast banburying mixer), and concrete operation is: the material that will mix drops in ten thousand horsepowers of machines with 130-150kg at every turn on the other hand.Control the electric current by hammer then, be stabilized between the 220A-550A, pressurization is carried out at twice, pressurizes 1.5-2 minute for the first time, and middle the pause is not more than 1 minute stirring time, pressurizes 0.5-1.0 minute for the second time; Stirring is meant that for the first time pressurization finishes, and mentions hammer, above allowing and the raw material at edge be involved in and carry out second time again behind the bottom and pressurize;
3) compound: pressure process for the second time, when the hammer electric current reaches 300A, should mention hammer once more, check whether material glues together frustillatum, in this way, opens bottom door, releases compound, treat to close bottom door immediately after material has been put; As not being, repeat above-mentioned action, until the gummed frustillatum, release compound;
4) calendering procedure: work continuously by three roller type calenders, make compound roll into the uniform sheet material of thickness;
5) cut operation: adopt guillotine to cut out basic unit's sheet material continuously by production specification, be up to the standards, 800 or 1000 neatly repeatedly are placed on the pallet stand-by;
B) hot pressing compound working procedure: with the above-mentioned materials and parts that cut honest material, being followed successively by wearing layer, printed layers and basic unit from top to bottom neatly repeatedly is placed on the shading plate, wherein the printed layers pattern plane is towards the wearing layer direction, and be stamped template on the wearing layer surface, stacking the 2-8 layer continuously is a little mould, and hot press is hot-forming in batches on one group of the ten little mould.Elder generation's preheating 10 minutes, temperature is controlled between 110-135 ℃ according to material thickness, carries out hot pressing after the preheating, pressure is being controlled at 0.60-0.80mpa, saturation temperature 135-140 ℃, after hot pressing 10-15 minute, be cooled to 20-30 ℃ after counterdie promptly get the floor tile semiproduct;
C) semiproduct fluting trimming process step: the deburring of floor tile semiproduct machinery, burr around the cutting semiproduct are straight bright and clean around making; According to the design needs anti-slip tank or phase caulking groove are offered in floor tile semiproduct bottom or side, utilize the fluting hobboing cutter to carve groove; Can increase chamfering process in case of necessity, carry out chamfered, make product have third dimension around the floor tile surface;
D) cleaning packaging process: the dust of above-mentioned processed finished product through absorbing finished surface processing and producing, be up to the standards, pack moulding and get product.
Remarkable advantage of the present invention is:
The present invention adopts thermoplastic elastomer (TPU) for the advantage of raw material to be:
A) thermoplastic elastomer of Cai Yonging (TPU) is because its molecular structure simple (only containing C, H, O, N) is a kind of product of hydrocarbon-containiproducts. belong to a class contains more carbamate groups (-NHCOO-) in strand elastic polymer material.It is not have the mutual induction and making mutually of alcohol and low molecular weight diol chain extender by oligomeric system two people's cyanates and polyethers that has terminal hydroxy group or polyester more.Be a kind of block polymer, generally the long flexible chain by polyalcohol constitutes soft section, constitutes hard section with two people's cyanates and chain extender.Hard section is orderly with the arrangement alternate with each other of hard section, forms the repetitive structure crystalline element, gives elastic body with high strength, rigidity with do performance such as fusing point; Soft section then unordered curling arrangement forms unformed area, gives elastic body with flexibility, elasticity, hygroscopicity and resistance to low temperature.Water content has urethano group and ether, ester and urea groups in the polyurethane elastomer strand, forms the chlorine chain between the molecule, with strong hydrogen bond be combined into.The prescription that is generated by numerous ether and ester can obtain performance polyurethane elastomer kind very inequality.These design features make elastic polyurethane have excellent abrasive, toughness peaceful coexistence high resiliency entirely, also are easy to have compatibility with other polymer.
A). processing is simple, energy consumption is low, the waste material leftover pieces are recycling: need not to add plasticizing agent (containing DOP, phenol etc.) in the process.
B) return period is short: be embedded in the soil because of being subjected to natural decomposition in humidity and the microbial action 3-5.
C) easy coloring: I take charge of the floor tile printed layers and can print with this material.
D) the splendid on-slip of tool.
E) process does not have stink (harmless to employee's health), can etching apparatus, reduce the equipment maintenance cost.
F) to environment, body harmless: be made up of hydrocarbon, burning can not produce any hazardous substances, does not have penetrating odor; The TPU material is pure environmental protection material (edible not hindering) after tested, and the long-term contact of human body can not produce harm (infant can relievedly use fully to our company's floor tile).
G) TPU has good abrasion resistance, and its abrasion resistance is 2-10 a times of natural rubber; Elongation at break exceeds 300% up to 600%-800% than natural rubber.(because of its antiwear characteristic TPU floor tile of the present invention more of a specified duration service life than the common PVC floor tile).
H) impact strength of TPU is than higher, and density is 1.14-1.22g/cm3, tensile strength 30-65M:Pa, and ester class TPU is a little more than ether fan TPU; Hot property is also higher, and long-term serviceability temperature also shows its good resilient flexible under-50-90 ℃ temperature.
I) TPU chemical resistance, anti-xanthochromia, oil resistivity, radiation hardness, oxygen resistence, ozone resistance, endurance is throbbed with fear and vibration resistance is good, heat resistance is also than higher, and molding and processing cost are low.
J) low temperature limit is-50 ℃, the light 0.9-1.1 of proportion.
K) anti-flexion: general plastic products are jackknifing easily under repeat function power, and the goods of TPU have proved that in experiment it still keeps not jackknifing under high-intensity active force, and outstanding anti-flexion characteristic can be fit to the demanding product line of anti-flexion performance.Damage is one of whether durable unalterable quota of test plastic products.
1) tear-proof: tearing strength is exactly the ability that effect is torn in the opposing of judgement material, and TPU has the height lear energy, and performance is excellent in actual applications.
M) anti-oxidant: general plastic material is easy to generate oxidation for a long time under the high temperature environment of (as more than 60 ℃); The TPU oxidation resistance is good, and generally speaking heat-resisting quantity is about more than 90-120 ℃.
The physicochemical property of TPU uniqueness allows other macromolecular material too far behind to catch up especially; Present TPU range of application: film, the applying of footwear material, bedding applying, stationery sports goods and sports equipment, automobile decoration piece, outdoor tent, waterproof bar, lister bag etc., but using TPU environmental protection material to replace PVC to make floor tile does not also report, the Promethean use of the present invention TPU environmental protection material replaces PVC to make floor tile, and utilizes its good characteristic only need add stone flour (CaCO in processing and fabricating floor tile process
3) just can make the needed material of different composite layer, and guarantee environmentally safe, harmless, make floor tile sheet material have higher safety in utilization, and the decorative layer of therebetween provides colourful texture and pattern, can see through the transparent wear-resistant coat of thermoplastic elastomer and reflect.
The present invention makes full use of the physics and the chemical characteristic of thermoplastic polyurethane, the wood floor bolck that heat is combined into, have the case hardness height, wear-resisting, anti-skidding, nonhygroscopic, do not go mouldy, glossiness is good, pattern is abundant, and in light weight, easy construction, recyclable characteristics.Production technology is reasonable, automaticity is high, energy consumption is little, steady quality, provides the thermoplastic polyurethane material to make a kind of feasible technology of floor tile.
Description of drawings
Below in conjunction with concrete legend the utility model is described further:
Fig. 1 thermoplastic polyurethane floor tile three-dimensional exploded view.
Fig. 2 is a basic unit of the present invention exploded view.
During the moulding of Fig. 3 floor tile and template concern stereogram.
1-wearing layer, 2-printed layers, 3-basic unit, 4-template, 5-shading plate 6-middle initial bed 7-initial bed wherein
The specific embodiment
Raw material TPU and stone flour, equipment that the present invention is used are the commercially available prod.
The form of effect data replenishes
Specify embodiments of the present invention below in conjunction with embodiment.
Embodiment one: brand-new TPU raw material processing
Middle initial bed: TPU: CaCO
3=20-30kg: 70-80kg.
Initial bed: TPU: CaCO
3=32.5-42.5kg: 56.5-66.5kg.
See figures.1.and.2, wearing layer 1, printed layers 2 and basic unit 3 process respectively and cut in flakes by production specification, and through being up to the standards, many neatly repeatedly are placed on the pallet stand-by.Wherein the sheet material that processes through the extrusion casting apparatus for the TPU raw material of wearing layer 1 according to designing requirement, can process the thick wear-resisting layered material of 0.1-2.0mm; Printed layers 2 extends fully through blowing or signature for the TPU raw material, and processing thickness is 0.05-1.0mm printed layers film, again by hectographic printing chromatic colour pattern; Basic unit 3 is divided into two-layer, promptly middle initial bed and initial bed.Middle initial bed is 25 parts of TPU raw materials, infiltrates 75 parts of CaCO
3, initial bed is 38.5 parts of TPU raw materials, infiltrates 61.5 parts of CaCO
3Mix, add and be pressed into glue-bondable little bulk through high-speed stirred banburying equipment.The banburying operation adopts high speed banburying mixer equipment, and control hammer electric current is stabilized between the 220A-550A, pressurizes 1.5 minutes for the first time, and the middle 0.5 minute stirring that pauses pressurizeed 0.5 minute for the second time; Pressure process when the hammer electric current reaches 300A, should be mentioned hammer once more for the second time, checks whether material glues together frustillatum, is to release compound; Not, repeat above-mentioned action,, release compound until the gummed frustillatum; Compound is sent into the roller type calender be squeezed into sheet material, the calendering action is that formation is worked continuously, and makes compound roll into the uniform sheet material of thickness by three roller type calender series connection; The carboxylic specification cuts stand-by.
As Fig. 2; hot pressing is compound; being followed successively by wearing layer 1, printed layers 2 and basic unit 3,4 from top to bottom neatly repeatedly is placed on the shading plate 5; wherein printed layers 2 pattern plane are towards wearing layer 1 direction; and be stamped template 4 on wearing layer 1 surface; stacking 5 layers continuously is a little mould; one group of top die machine of ten little moulds is hot-forming in batches; elder generation's preheating 10 minutes, temperature is controlled between 110-120 ℃ according to material thickness, carries out hot pressing after the preheating; pressure is being controlled at 0.60-0.80mpa; saturation temperature 135-140 ℃, after hot pressing 10-15 minute, be cooled to 20-30 ℃ after counterdie promptly get the floor tile semiproduct.
The deburring of floor tile semiproduct machinery, the cutting semiproduct because of the hot compression deformation edge and around burr etc., straight bright and clean around making; According to the design needs anti-slip tank or phase caulking groove are offered in floor tile semiproduct bottom or side, utilize the fluting hobboing cutter to carve groove; Can increase chamfering process in case of necessity, carry out chamfered, make product have third dimension around the floor tile surface;
Cleaning packaging process: the dust of above-mentioned processed finished product through absorbing finished surface processing and producing, be up to the standards, pack moulding and get product.
Embodiment two TPU virgin materials and reclaimed materials processing
Basic working procedure and last example be with, basic unit's raw material wherein, and according to parts by weight: 50 parts of TPU virgin material+50 part TPU reclaimed materials are mixed into 100 parts of TPU compounds, and compound is divided into two parts, fills a prescription to be:
Middle initial bed: 50 parts of TPU compound+122-132 part stone flour (CaCO
3)
Initial bed: 50 parts of TPU compound+62-72 part stone flour (CaCO
3)
Raw material mixes, and mixes, adds and be pressed into glue-bondable little bulk through high-speed stirred banburying equipment.The pressurization parameter: pressurizeed 2 minutes for the first time, the middle 0.8 minute stirring that pauses pressurizeed 1 minute for the second time; Between hot complex parameter: preheat temperature 120-135 ℃, carry out hot pressing after the preheating, pressure is being controlled at 0.60-0.80mpa, saturation temperature 135-140 ℃, after hot pressing 10-15 minute, be cooled to 22-23 ℃ after counterdie promptly get the floor tile semiproduct.
Embodiment three whole TPU reclaimed materials processing
Basic working procedure and last example are same, and wherein the TPU raw material all adopts reclaimed materials in the basic unit, according to the parts by weight prescription is:
Middle initial bed: 50 parts of TPU reclaimed materials+105-110 part stone flour (CaCO
3)
Initial bed: 50 parts of TPU reclaimed materials+56-61 part stone flour (CaCO
3)
Raw material mixes, and mixes, adds and be pressed into glue-bondable little bulk through high-speed stirred banburying equipment.The pressurization parameter: pressurizeed 2 minutes for the first time, the middle 0.8 minute stirring that pauses pressurizeed 1 minute for the second time; Between hot complex parameter: preheat temperature 120-135 ℃, carry out hot pressing after the preheating, pressure is being controlled at 0.60-0.80mpa, saturation temperature 135-140 ℃, after hot pressing 10-15 minute, be cooled to 22-23 ℃ after counterdie promptly get the floor tile semiproduct.
In the following table 1 the various performance test results of thermoplastic polyurethane floor tile of the present invention, can the very objective excellent properties that reflects thermoplastic polyurethane floor tile of the present invention from table 1.
Table 1
| Performance classification | EN685 | 34 |
| Mass area ratio (g/m 2) | EN430，GB/T4085-2005 | Detect by European standard and GB |
| Hazardous substances detects | GB18586-2001 | Detect by GB |
| Fire line | GB8624-2006，CE | Bf1-s1，t0 |
| Residual indentation, mm | EN433，GB/T4085-2005 | ≤0.10mm |
| Abrasion resistance | EN660-2∶99，GB/T4085-2005 | Detect by European standard and GB |
| The after-contraction of being heated | EN434，GB/T4085-2005 | Detect by European standard and GB |
| Curl after being heated | EN434，GB/T4085-2005 | Detect by European standard and GB |
| Color fastness | ISO?105?B02∶00，GB/T?4085-2005 | Detect by ISO and GB |
| Elasticity, flexibility | EN435 | Detect by European standard |
| Resistance to soiling | EN423 | Detect by European standard |
| Skid resistance | CE | Class?DS |
| The formaldehyde volatile quantity | CE | Class?E1 |
Claims (7)
1. thermoplastic polyurethane floor tile, comprise the wearing layer, printed layers and the basic unit that are combined with each other, it is characterized in that: described thermoplastic polyurethane floor tile is combined into one by wearing layer, printed layers and basic unit from top to bottom successively, wherein wearing layer is the TPU sheet material, printed layers is the TPU film, and basic unit is TPU mixes calendering with stone flour a sheet material.
2. thermoplastic polyurethane floor tile according to claim 1 is characterized in that: described wearing layer thickness is between 0.1mm-2.0mm; Printed layers thickness is between 0.05mm-1.0mm, and the surface is printed with pattern texture; Described basic unit is divided into two-layer: the upper strata, promptly the boundary is referred to as middle initial bed between printed layers and initial bed, the bottom be referred to as initial bed.
3. thermoplastic polyurethane floor tile according to claim 2 is characterized in that: TPU adopts brand-new material in the described basic unit: its formula rate is as follows:
Middle initial bed: TPU: CaCO
3=20-30kg: 70-80kg
Initial bed: TPU: CaCO
3=32.5-42.5kg: 56.5-66.5kg.
4. thermoplastic polyurethane floor tile according to claim 2, it is characterized in that: TPU adopts the compound of brand-new material and reclaimed materials in the described basic unit, according to according to parts by weight: 50 parts of TPU virgin material+50 part TPU reclaimed materials are mixed into 100 parts of TPU compounds, compound is divided into two parts, and each proportion of raw materials is:
Middle initial bed: 50 parts of TPU compound+122-132 part stone flour (CaCO
3)
Initial bed: 50 parts of TPU compound+62-72 part stone flour (CaCO
3).
5. thermoplastic polyurethane floor tile according to claim 2 is characterized in that: when TPU all adopts reclaimed materials in the described basic unit, according to parts by weight:
Middle initial bed: 50 parts of TPU reclaimed materials+105-110 part stone flour (CaCO
3)
Initial bed: 50 parts of TPU reclaimed materials+56-61 part stone flour (CaCO
3).
6. thermoplastic polyurethane floor tile according to claim 1 is characterized in that: described printed layers adopts the printed patterns method of selecting of hectographic printing, serigraphy, intaglio printing or radium-shine printing.
7. the technology of production such as claim 1,2,3,4,5 or 6 described thermoplastic polyurethane floor tiles is characterized in that: by following processing step:
A) layered material processing
Wearing layer: by the extrusion casting apparatus, process wear-resisting layered material by design thickness, and precut into sheet material, be up to the standards, 1500 or 2000 neatly repeatedly are placed on the pallet stand-by;
Printed layers: adopt blowing or signature to extend fully and process printed layers by design thickness, adopt the printing process of selecting of hectographic printing, serigraphy or intaglio printing on its surface, be printed with pattern texture, and precut into sheet material, be up to the standards, 1500 or 3000 neatly repeatedly are placed on the pallet stand-by;
Basic unit: adopt successively
1) mixed processes: adopt the high-speed mixing mixing plant, drop into raw material with feeding sequence in proportion, ordering in launching is first mixture or block reclaimed materials, stone flour auxiliary material then;
2) banburying operation: banburying is to finish by ten thousand horsepowers of imports (being high speed banburying mixer), concrete operation is: control is by the electric current of hammer, be stabilized between the 220A-550A, pressurization is carried out at twice, pressurizeed 1.5-2 minute for the first time, the middle pause is not more than 1 minute stirring time, pressurizes 0.5-1.0 minute for the second time; Stirring is meant that for the first time pressurization finishes, and mentions hammer, above allowing and the raw material at edge be involved in and carry out second time again behind the bottom and pressurize;
3) compound: pressure process for the second time, when the hammer electric current reaches 300A, should mention hammer once more, check whether material glues together frustillatum, in this way, opens bottom door, releases compound, treat to close bottom door immediately after material has been put; As not being, repeat above-mentioned action, until the gummed frustillatum, release compound;
4) calendering procedure: work continuously by three roller type calenders, make compound roll into the uniform sheet material of thickness;
5) cut operation: adopt guillotine to cut out basic unit's sheet material continuously by production specification, be up to the standards, 800 or 1000 neatly repeatedly are placed on the pallet stand-by;
B) hot pressing compound working procedure: with the above-mentioned layered material that cut, be followed successively by wearing layer from top to bottom, printed layers and basic unit neatly repeatedly are placed on the shading plate, wherein the printed layers pattern plane is towards the wearing layer direction, and be stamped template on the wearing layer surface, stacking the 2-8 layer continuously is a little mould, one group of top die machine of ten little moulds is hot-forming in batches, elder generation's preheating 10 minutes, temperature is controlled between 110-135 ℃ according to material thickness, carry out hot pressing after the preheating, pressure is being controlled at 0.60-0.80mpa, saturation temperature 135-140 ℃, after hot pressing 10-15 minute, be cooled to 20-30 ℃ after counterdie promptly get the floor tile semiproduct;
C) semiproduct flutings trimming process step: the deburring of floor tile semiproduct machinery, the cutting semiproduct because of the hot compression deformation edge and around burr etc., straight bright and clean around making; According to the design needs anti-slip tank or phase caulking groove are offered in floor tile semiproduct bottom or side, utilize the fluting hobboing cutter to carve groove; Can increase chamfering process in case of necessity, carry out chamfered, make product have third dimension around the floor tile surface;
D) cleaning packaging process: the dust of above-mentioned processed finished product through absorbing finished surface processing and producing, be up to the standards, pack moulding and get product.
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| CN2009101112821A CN101509313B (en) | 2009-03-17 | 2009-03-17 | Thermoplastic polyurethane floor tile and technique for producing the same |
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|---|---|---|---|
| CN2009101112821A CN101509313B (en) | 2009-03-17 | 2009-03-17 | Thermoplastic polyurethane floor tile and technique for producing the same |
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