CN1328076A - Preparation method of continuous roll thermoplastic polyurethane foam under normal pressure - Google Patents

Abstract

A process for preparing the ordinary-pressure continuous coiled foam of thermoplastic polyurethane includes such steps as mixing thermoplastic polyurethane resin, foaming agent, filler and assistant, pugging, preparing film, ordinary-pressure heating for foaming, and continuous coiling. Has the effects of saving energy, improving the production speed, continuously producing, reducing the cost, being nontoxic and protecting the environment.

Description

Preparation method of continuous roll thermoplastic polyurethane foam under normal pressure

The invention relates to a processing method of a foam body, in particular to a method for making a continuous rolling thermoplastic polyurethane foam body under normal pressure.

Commonly used methods for making thermoplastic polyurethane foams are broadly divided into two categories. The first category is to adopt heating and high-pressure airtight foam molding, such as Taiwan patent announcements 339265, 382589, 293825 and U.S. patents 4656199 and 4132840. It is an intermittent batch production, the foaming time is long, it needs to be carried out under high pressure, and the production speed is slow. When a reinforcing material is needed, it must be attached to the reinforcing material by itself before it can be used; the second type is the traditional one. The main disadvantage of the TDI slate foam foaming method is that TDI is highly toxic and pollutes the environment. When it needs a reinforcing material, it must also be attached to the reinforcing material by itself before it can be used.

The main purpose of the present invention is to provide a method for making continuous rolling thermoplastic polyurethane foam under normal pressure. The composition does not contain toxic TDI. After mixing and kneading to form a thin film, it is heated and foamed under normal pressure. And cooling and coiling to produce continuous roll foam products, overcome the disadvantages of the existing technology, and achieve the goals of saving energy, increasing production speed, continuous production, reducing costs, non-toxic and protecting the environment.

Another object of the present invention is to provide a method for making continuous rolling thermoplastic polyurethane foam under normal pressure. The reinforcing material is pasted and then heated and foamed under normal pressure to form a composite continuous rolling foam Products, or surface treatment with surface treatment, printing or embossing devices to increase added value and develop a variety of designs and varieties.

The object of the present invention is achieved like this: a kind of method for the preparation of normal pressure continuous roll type thermoplastic polyurethane foam, is characterized in that: comprise the steps:

(1) raw material composition mixing:

Add 100 parts by weight of thermoplastic polyurethane resin, 2-15 parts of foaming agent, 5-100 parts of filler and 0.05-20 parts of additives into the mixing device, fully stir and mix evenly;

(2) Mixing:

Put the mixture of the above (1) into the kneading device to refine evenly, the temperature is controlled at 90-180°C, and the decomposition temperature of each mixture component is not exceeded;

(3) Manufacture of film:

The uniformly mixed rubber material is sent to the film production device to form a continuous film, the temperature is controlled below 180°C, and it is coiled after cooling;

(4) Foaming process:

Send the coiled film continuously into the normal pressure foaming device for heating and foaming, the humidity is 160-260°C, and the residence time is 1-10 minutes;

(5) Continuous coiling:

After the foaming is completed, it is cooled and coiled to make a single continuous coiled foam of the present invention.

The thermoplastic polyurethane resin includes polyurethane resin. The thermoplastic polyurethane resin includes ester type and/or ether type polyurethane resin. The blowing agent includes azodicarbonamide, p-toluenesulfonic acid hydrazide, 4,4-oxybisbenzenesulfonic acid hydrazide, 2,4,6-triamino-1,3,5-triazine, p-toluenesulfonic acid hydrazide Acid phencarbazide, 5-phenyl-tetra, dinitrosopentylenetetramine, bicarbonate or bicarbonate citric acid mixture. The filler includes heavy calcium carbonate, light calcium carbonate, barium sulfate, calcium sulfate, micronized silica gel, silica gel salt, alumina, aluminum powder, quartz powder, asbestos powder, barite, calcined clay, mica powder, oxide Silicon, talc, natural fibers or glass fibers. The additives include zinc stearate, calcium stearate, zinc oxide or antimony oxide. The above-mentioned steps can be carried out separately or continuously, and there is no need for a coiling process between the steps, and only cooling and coiling are performed after foam molding. The finished continuous roll foam product can also go through (6) surface treatment, (7) surface printing and (8) embossing treatment. The (6) surface treatment includes passing the continuous rolling foam through a surface treatment device, performing surface treatment with a surface treatment agent, and then drying, cooling and coiling to make it with a matte surface, a bright surface, oil wax, and velvet. Waxed or waxed surface products. The surface treatment agent is selected from polyvinyl chloride, polyurethane or polyacrylate surface treatment agents. The drying conditions are 80-150° C. and 5-60 seconds. The preferred drying conditions are 85-145° C. and 15-40 seconds. The surface treatment device includes a rotary surface treatment machine. The (7) surface printing treatment includes printing the continuous roll-type foam through a surface printing device, using various printing inks for single-page or multi-page printing, and then drying, cooling, and winding to make different patterns. patterned products. The printing ink is selected from polyvinyl chloride, polyurethane or polyacrylate printing ink. The surface printing device includes a letterpress or gravure single or multi-version rotary printing machine or a single-version or multi-version screen printing machine. The (8) embossing process includes placing the side-rolling foam in an embossing device, first heating it, and using various embossing wheels with different patterns to press out the required pattern lines, and then cooling and rolling. Pick. The heating conditions are 120-200° C. and heating for 5-60 seconds. The preferred heating conditions are 150-180° C. and heating for 10-40 seconds. The various surface treatment steps include overlapping and crossing. The overlapping and intersecting step includes (6) surface treatment first, and then (7) surface printing. The overlapping and intersecting step includes (7) surface printing first, and then (6) surface treatment. The overlapping and intersecting step includes (eight) embossing treatment first, and then (six) surface treatment and/or (seven) surface printing. The overlapping and intersecting step includes (8) embossing treatment first, and then (7) surface printing and/or (6) surface treatment. The ingredients of the composition are 100kg of thermoplastic polyurethane resin, 6kg of azodicarbonamide, 50kg of light calcium carbonate, and 2kg of zinc stearate, mixed for 1 minute at 25°C, kneaded at 130°C for uniformity, and then Under the film manufacturing device at 150°C, an adhesive film roll with a thickness of 0.6 mm is made, and then foamed at 220°C and 80 seconds under normal pressure through a foaming device to make the normal pressure continuous thermoplastic polyurethane of the present invention. Ester foam. Including the addition of (9) pasting process, the (9) pasting process is to use the reinforcing material directly or process it into a reinforcing material film through a pasting device, and then apply a layer of paste as a direct layer, at a temperature of 80-160 After drying at ℃ and 10-60 seconds, it is coiled, and then compounded with the film made in step (3), and then sent to (4) foaming device for heating and foaming to make a composite continuous roll foam with reinforcing material body products. The reinforcing material includes fiber products, paper products, rubber and plastic films or metal foils. The method for coating the paste includes using a T-die extruder to coat the paste on a reinforcing material.

The main advantages of the invention are energy saving, production speed improvement, continuous production, cost reduction, non-toxicity and environmental protection.

Further description will be given below in conjunction with preferred embodiments and process flow diagrams.

Fig. 1 is the technological process schematic diagram of embodiment 1-4 of the present invention;

Fig. 2 is a schematic process flow diagram of Embodiment 5-8 of the present invention.

Example 1

Referring to Fig. 1, preparation method of the present invention comprises the steps:

(1) raw material composition mixing:

Add 100 parts by weight of thermoplastic polyurethane resin, 2-15 parts of foaming agent, 5-100 parts of filler and 0.05-20 parts of additives into the mixing device, fully stir and mix evenly;

(2) Mixing:

Put the mixture of the above (1) into the kneading device to refine evenly, the temperature is controlled at 90-180°C, and the decomposition temperature of each mixture component is not exceeded;

(3) Manufacture of film:

The uniformly mixed rubber material is sent to the film production device to form a continuous film, the temperature is controlled below 180°C, and it is coiled after cooling;

(4) Foaming process:

Send the coiled film continuously into the normal pressure foaming device for heating and foaming, the humidity is 160-260°C, and the residence time is 1-10 minutes;

(5) Continuous coiling:

After the foaming is completed, it is cooled and coiled to make a single continuous coiled foam of the present invention.

Wherein the thermoplastic polyurethane resin includes polyurethane resin, including ester type and/or ether type, and the foaming agent includes azodicarbonamide ADC (Azodicarbonamide), p-toluenesulfonic acid hydrazide TSH (P-toluenesulphohydrazide), 4,4-Oxybisbenzenesulfonic acid hydrazide OBSH (4,4-oxybis (benzenesulphohydrazide), 2,4,6-tripleamino-1,3,5-triazine THT (2,4,6-trihydrazino-1 , 3,5-triazine), p-toluenesulphonylsemicarbazide TSS (P-toluenesulphonylsemicarbazide), 5-phenyl-tetrazole 5PT (5-phenyl-tetrazole), dinitrosopentamethylenetetramine

DNPT (dinitrosopertamethylenetetramine), bicarbonate (NaHCO ₃ ) and bicarbonate citric acid mixture (NaHCO3/citric acid); the filler includes heavy calcium carbonate, light calcium carbonate, barium sulfate, calcium sulfate, micronized silica gel, silica gel Salt, alumina, aluminum powder, quartz powder, asbestos powder, barite, calcined clay, mica powder, silicon oxide, talc, natural fibers or glass fibers. The additives include zinc stearate, calcium stearate, zinc oxide or antimony oxide.

The above-mentioned steps can be carried out separately or continuously, and there is no need for a coiling process between the steps, and only cooling and coiling are performed after foam molding, which has the flexibility and convenience of production.

The continuous rolling foam product made by the method of the present invention can also go through (6) surface treatment, (7) surface printing and (8) embossing treatment, so as to increase the diversity of products and increase the added value of products.

The (6) surface treatment includes passing the continuous rolling foam through a surface treatment device, performing surface treatment with a surface treatment agent, and then drying, cooling and coiling to make it with a matte surface, a bright surface, oil wax, and velvet. Wax or colored wax surface products, the surface treatment agent is selected from polyvinyl chloride, polyurethane or polyacrylate surface treatment agents, the drying conditions are 80-150 ° C and 5-60 seconds, the preferred drying conditions 85-145°C and 15-40 seconds. The surface treatment device includes a rotary surface treatment machine.

The (7) surface printing treatment includes printing the continuous roll-type foam through a surface printing device, using various printing inks for single-page or multi-page printing, and then drying, cooling, and winding to make different patterns. patterned products. The printing ink is selected from polyvinyl chloride, polyurethane or polyacrylate printing ink, and the drying conditions are the same as (6), so it will not be repeated. The surface printing device includes a letterpress or gravure single or multi-version rotary printing machine or a single-version or multi-version screen printing machine.

The (8) embossing process includes placing the side-rolling foam in an embossing device, first heating it, and using various embossing wheels with different patterns to press out the required pattern lines, and then cooling and rolling. Preferably, the heating condition is 120-200°C and heating for 5-60 seconds, and the preferred heating condition is 150-180°C and heating for 10-40 seconds. The surface treatment steps include overlapping and intersecting, and the overlapping and intersecting steps include first performing (6) surface treatment, and then performing (7) surface printing, or first performing (7) surface printing, and then performing (6) surface treatment; or first (8) embossing treatment, then (6) surface treatment and/or (7) surface printing, or (8) embossing treatment first, then (7) surface printing and/or (6) surface treatment, Such change treatment can produce products with various surface changes, which can increase the added value and application range of products, and are widely used in shoe materials, handbags, suitcases, computer bags, protective pads, table mats, floor mats, linings, furniture, etc. .

In this embodiment, the ingredients of the composition are 100kg of thermoplastic polyurethane resin, 6kg of azodicarbonamide, 50kg of light calcium carbonate, and 2kg of zinc stearate, mixed for 1 minute at 25°C, and mixed at 130°C. Refining evenly, and then through the film manufacturing device at 150 ° C, a film roll with a thickness of 0.6 mm is made, and then through the foaming device, foamed at 220 ° C and 80 seconds under normal pressure to form the normal pressure continuous thermoplastic film of the present invention. Polyurethane foam.

Measure the physical properties of the foam made by the following test methods, see Table 1:

1. Foaming ratio: the film thickness after foaming divided by the film thickness before foaming. The thickness is measured with a thickness gauge with a precision of 0.01×10mm. The foaming ratio measurement result is: 2.5.

2. Airbag status: The judging criteria are as follows:

○, indicating that the diameter of the airbag is less than 0.3mm, and it is uniform and fine;

△, indicating the uneven distribution of airbag size;

×, indicating that the airbag is ruptured.

The measurement result is: ◯, indicating that the diameter of the balloon is 0.3 mm or less, and it is uniform and fine.

3. Hardness: Refer to the standard test method of JISH6301. Since it has not been reinforced, the hardness has not been measured.

4. Tensile strength kgf/3cm: Refer to the standard test method of ASTM D412, the test result is 10 in the warp direction and 8 in the weft direction.

5. Elongation %: refer to the standard test method of ASTM D412, the test result: 500 in the warp direction, 400 in the weft direction,

6. Tear strength kg/cm ² : Refer to the standard test method of ASTM D624, the test results: 0.5 in the warp direction, 0.4 in the weft direction,

7. Bursting strength kgf/cm ² : refer to the standard test method of JISP8131,

8. Peel strength kgf/3cm: referring to the standard test method of JISK6772, it indicates the adhesion strength between the cloth and the film.

9. Air permeability g/m ² .24 hours: With reference to the standard test method of JISK6772, since no reinforcement has been performed in this example, burst strength, peel strength and air permeability are not measured.

10. Rubber surface wear g/1000 revolutions: refer to the test method of ASTM D1044-56, the test result is: 0.0125g/1000 revolutions.

Example 2

Composition is the polyurethane resin 100kg of ester type, blowing agent is p-toluene sulfonic acid hydrazide TSH10kg, filler is micropowder silica gel 30kg, and adding auxiliary agent is zinc oxide 5 grams, and its processing method is with embodiment 1, The processing conditions and physical properties of the foam are shown in Table 1.

Example 3

Composition is the polyurethane resin 100kg of ether type, foaming agent is 5-phenyl tetrazole 5PT7kg, filler is barium sulfate 20kg, and additive is zinc stearate 5 grams, and its processing method is the same as embodiment 1. The processing conditions and physical properties of the foam are shown in Table 1.

Example 4

The composition is 100kg of ester-type polyurethane resin, the blowing agent is 13kg of sodium bicarbonate, the filler is 50kg of aluminum oxide, and the additive is 5 grams of antimony oxide. Its processing method is the same as that of Example 1, and its processing conditions And the physical properties of the foam are shown in Table 1.

Example 5

Referring to Fig. 2, the present embodiment includes adding (nine) pasting process, which is to directly use the reinforcing material or process it into a reinforcing material film through a pasting device, and then apply a layer of paste as The direct layer is coiled after being dried at a temperature of 80-160°C for 10-60 seconds, and then compounded with the film made in step (3), and then sent to (4) foaming device for heating and foaming to make a reinforcing material Composite continuous roll foam products. The reinforcing material includes fiber products, paper products, rubber and plastic films or metal foils, and the method for coating the paste includes using a T-shaped die head extruder to coat the paste on the reinforcing material. The reinforcing material in this embodiment is T/C blended fabric, the thickness of the composite adhesive film is 1.5mm before foaming, the thickness after foaming is 3.75mm, and the expansion ratio is 2.5 times. The physical properties are shown in Table 1.

Example 6

In the present embodiment, the composition is 100 kg of ether-type polyurethane resin, the foaming agent is 5-phenyl-tetrazole 5PT7 kg, the filler is 30 kg of barite, and the additive is 2 kg of antimony oxide. The method and reinforcing material are the same as in Example 5, and the processing conditions and physical properties of the foam are shown in Table 1.

Example 7

In this embodiment, the composition is 100 kg of ester-type polyurethane resin, 7 kg of azodicarbonamide as a foaming agent, 30 kg of mica powder as a filler, and 2 kg of zinc oxide as an additive. Its processing method and reinforcement The material is the same as in Example 5, without being processed by the surface paste device of step (9), directly coating a layer of paste and then compounding with the film made in step (3), the processing conditions and the physical properties of the foam are shown in Table 1 .

Example 8

In the present embodiment, the composition is 100 kg of ether-type polyurethane resin, the blowing agent is 10 kg of dinitrosopentylenetetramine, the filler is 60 kg of asbestos powder, and the additive is 4 kg of calcium stearate. Its reinforcing material is a non-woven fabric, and its processing method is the same as in Example 7, and its processing conditions and physical properties of the foam are shown in Table 1.

The above-mentioned composite continuous rolling foam body can also be subjected to surface treatment processing to increase the added value of the product and develop many varieties of designs and colors, which will not be repeated here.

Schedule 1 Single continuous foam production Composite continuous foam production Example number 1 2 3 4 5 6 7 8 The processing conditions of the process of the present invention Mixing temperature (°C)/time (seconds) 25/60 28/60 27/60 28/60 25/60 30/60 28/60 27/60 Mixed flicker temperature (°C)/time (seconds) 130 140 150 155 150/120 140/120 130/120 155/120 Film making device temperature (°C) 150 155 160 165 140 150 150 160 Foaming temperature (℃) 220 220 240 240 220 220 240 240 Foaming time (seconds) 80 120 80 120 80 120 80 120 Physical properties of foam Foaming ratio (times) 2.5 3 3 5 2.5 3 3 5 air bag status ○ ○ ○ ○ ○ ○ ○ ○ Hardness (shore-A)(*) - - - - 56 50 50 60 Tensile strength (kgf/3cm) through 10 8 8 5 68 57 65 54 latitude 8 7 6.5 3.8 52 51 58 54 Elongation(%) through 500 550 550 650 31 30 25 63 latitude 400 430 435 550 40 47 40 72 Tear strength (kg/cm ² ) through 0.5 0.4 0.4 0.3 3.3 2.5 3.5 5.0 latitude 0.4 0.2 0.3 0.2 3.2 2.4 2.9 5.7 Bursting Strength(**)(kgf/cm ² ) - - - - 14.6 14.2 25 20.2 Peel Strength(***)(kgf/3cm) through - - - - N N N N latitude - - - - N N N N Air permeability (g/m ² .24hrs) - - - - 280.1 452.1 449.9 696.0 Amine wear (g/1000 rpm) 0.0125 0.0132 0.0148 0.0136 0.0125 0.0156 0.0197 0.0129 Note: *: Reinforcing material: T/C blended fabric was used in Examples 5-7, and non-woven fabric was used in Example 8. **: Burst strength, peel strength and air permeability are not measured for single continuous foam. ***: Peel strength indicates the bonding strength between cloth and glue, and N indicates that it cannot be peeled off.

Claims (28)

1, a kind of method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure is characterized in that: comprise the steps:

(1) feedstock composition mixes:

TPU(Thermoplastic polyurethanes) 100 weight parts, whipping agent 2-15 part, weighting agent 5-100 part and interpolation auxiliary agent 0.05-20 part are added in the mixing device, fully mix;

(2) mixing:

The mixture of above-mentioned (one) is inserted in the kneading device refining evenly, and temperature is controlled at 90-180 ℃, exceeds with the decomposition temperature that is no more than each mixture composition;

(3) make film:

Mixing uniform sizing material is delivered to film production device form continuous glued membrane, temperature is controlled at below 180 ℃, batches via cooling;

(4) foaming processing procedure:

The glued membrane that batches is sent into foamable in the normal pressure foam device continuously, humidity 160-260 ℃, residence time 1-10 minute;

(5) batch continuously:

Cooled off after foaming finished and batched, made single type continuously rolled foam of the present invention.

2, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1 is characterized in that: this thermoplastic polyurethane resin comprises polyurethane methyl esters resin.

3, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1 is characterized in that: this thermoplastic polyurethane resin comprises the polyurethane methyl esters resin of ester type and/or ether type.

4, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1, it is characterized in that: this whipping agent comprises azoformamide, tosic acid hydrazides, 4, the two Phenylsulfonic acid hydrazides, 2 of 4-oxygen, 4,6-three hydrazinos-1,3,5-triazine, tosic acid phenol carbohydrazide, 5-phenyl-four, Dinitroso Pentamethylene Tetramine, supercarbonate or supercarbonate citric acid mixture.

5, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1 is characterized in that: this weighting agent comprises water-ground limestone, light calcium carbonate, barium sulfate, calcium sulfate, micropowder silica gel, silica gel salt, aluminum oxide, aluminium powder, silica powder, asbestos powder, barite, calcination soil, mica powder, silicon oxide, talcum powder, natural fiber or glass fibre.

6, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1 is characterized in that: this interpolation auxiliary agent comprises Zinc Stearate, calcium stearate, zinc oxide or weisspiessglanz.

7, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1 is characterized in that: above steps can be carried out respectively, also can carry out continuously, between each step coiling process needn't be arranged, and only cools off after foaming and batches.

8, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1 is characterized in that: the type continuously rolled foam product of making can also be via (six) surface treatment, (seven) surface printing and (eight) embossed.

9, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 8, it is characterized in that: should (six) surface treatment comprise type continuously rolled foam via surface processing device, carry out surface treatment with surface treatment agent, then drying, cool off and batch, make have cloudy surface, bright, oil is cured, suede is cured or the product on look cured surface.

10, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 9 is characterized in that: this surface treatment agent is selected from the surface treatment agent of polyvinyl chloride, urethane or polyacrylic ester system.

11, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 9 is characterized in that: this drying condition is 80-150 ℃ and 5-60 second.

12, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 9 is characterized in that: this preferred drying condition is 85-145 ℃ and 15-40 second.

13, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 9 is characterized in that: this surface processing device comprises that wheel changes surface treating machine.

14, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 8, it is characterized in that: should the processing of (seven) surface printing comprise type continuously rolled foam via the surface printing device, carry out single edition or multiple printing with various printing-ink, again drying, cool off, batch, make the product of the different designs of tool.

15, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 14 is characterized in that: this printing-ink is selected from the printing-ink of polyvinyl chloride, urethane or polyacrylic ester system.

16, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 14 is characterized in that: this surface printing device comprises single edition or many editions rotary presss or single edition, many editions screen printers of relief printing plate or intaglio plate.

17, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 8, it is characterized in that: should (eight) embossed comprise that the limit is continued rolled foamed body placed Embosser, earlier after heating, embossed wheel with various different patterns suppresses required pattern lines, again through cooling off and batching.

18, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 17 is characterized in that: this heating condition is 120-200 ℃ and heats 5-60 second.

19, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 17 is characterized in that: this preferred heating condition is 150-180 ℃ and heats 10-40 second.

20, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 8 is characterized in that: this each surface treatment step comprises that overlapping intersection carries out.

21, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 20 is characterized in that: this overlapping intersection step comprises carries out (six) surface treatment earlier, carries out (seven) surface printing again.

22, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 20 is characterized in that: this overlapping intersection step comprises carries out (seven) surface printing earlier, carries out (six) surface treatment again.

23, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 20 is characterized in that: this overlapping intersection step comprises carries out (eight) embossed earlier, again through (six) surface treatment and/or (seven) surface printing.

24, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 20 is characterized in that: this overlapping intersection step comprises carries out (eight) embossed earlier, again through (seven) surface printing and/or (six) surface treatment.

25, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1, it is characterized in that: the composition of constituent is thermoplastic poly Urethylane resin 100kg, Cellmic C 121 6kg, light calcium carbonate 50kg, Zinc Stearate 2kg, under 25 ℃ of conditions, mixed 1 minute, 130 ℃ mixing even, again under 150 ℃ of apparatus for manufacturing thin film, make thickness and be 0.6 millimeter glued membrane volume, again through foam device, normal pressure continuous thermoplastic polyurethane methyl esters foam of the present invention is made in 220 ℃ and foaming in 80 seconds under normal pressure.

26, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 1, it is characterized in that: comprise increase (nine) paper processing procedure, should for directly being used or stick with paste device through table, the reinforcement material be processed into reinforcement material film by (nine) paper processing procedure, be coated with one deck thickener again as direct layer, after drying second, temperature 80-160 ℃ and 10-60 batch, the film made from step (three) is compound again, send into foamable in (four) foam device again, make the compound type continuously rolled foam product that comprises the reinforcement material.

27, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 26 is characterized in that: this reinforcement material comprises fibre product, paper product, rubber and plastic glue film or tinsel.

28, the method for making of thermoplastic foam polyurethane body coiled continuously at ordinary pressure as claimed in claim 26 is characterized in that: the method for this coating thickener comprises uses T pattern head forcing machine that thickener is coated on the reinforcement material.

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