CN104260383A - Production technology of high-toughness heat-insulation film - Google Patents
Production technology of high-toughness heat-insulation film Download PDFInfo
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- CN104260383A CN104260383A CN201410411230.7A CN201410411230A CN104260383A CN 104260383 A CN104260383 A CN 104260383A CN 201410411230 A CN201410411230 A CN 201410411230A CN 104260383 A CN104260383 A CN 104260383A
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Abstract
The invention discloses a production technology of a high-toughness heat-insulation film. The high-toughness heat-insulation film is prepared from copolymerization-type polypropylene particles, polyethylene particles and polyethylene glycol terephthalate by mixing, heating melting, extrusion curtain-coating, compacting cooling molding, traction, corona treatment and slitting. The middle of the high-toughness heat-insulation film is provided with an aluminum foil layer having the thickness of 0.10-0.15mm. The production technology utilizes the aluminum foil layer in film molding to improve the conventional film surface aluminizing technology. The high-toughness heat-insulation film has good heat insulation effects, has a certain ductility and high toughness, does not easily damage aluminum foil in stretching, has a long service life, and saves application costs in different fields of heat insulation films. The production technology has simple processes and greatly improves enterprise work efficiency.
Description
Technical field
The present invention relates to the production field of organic plastics film, particularly relate to a kind of good toughness, there is the production technology of the macromolecule membrane of heat insulating function simultaneously.
Background technology
With the film that polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins are made, for packaging, and be used as coating layer.Be widely used in the fields such as food, medicine, chemical industry, these products all bring great convenience to people's life.
Current thermal insulation film on the market generally adopts aluminum plating process, film plates layer of metal aluminium, to reach its efficient effect of heat insulation, but in the process that this kind of film uses in reality, be plated in the metallic aluminium of film surface in the process of film stretching, the easy situation of tearing or rupturing, and then affect the effect of heat insulation of film integral; Simultaneously because film itself in use must need certain stretching or extension, it is low that the thermal insulation film that common process is produced also exists service life, and the shortcoming that toughness is lower, use cost is larger.
Summary of the invention
For above-mentioned Problems existing, the invention provides one and there is good heat-insulation effect, there is the production technology of the high-ductility thermal insulation film of certain ductility simultaneously.
In order to achieve the above object, the technical solution used in the present invention is as follows: a kind of production technology of high-ductility thermal insulation film, described high-ductility heat insulation type film is formed through mixed melting by copolymerized type propene polymer particle, polyethylene particle and PETG, the middle part of described high-ductility heat insulation type film is provided with aluminium foil layer, the thickness of described aluminium foil layer is 0.10mm-0.15mm, and its production technology comprises the steps:
1) batch mixing: copolymerized type propene polymer particle, polyethylene particle are screened through 200-250 object screen cloth, after having screened, put in batch mixer, then pet fiber section is added, insulation jacket is used to keep the whipping temp of batch mixer in batch mixing process, whipping temp is 60 DEG C ~ 65 DEG C, stirs 2-3h, obtains mixed material particle after having stirred;
2) heating and melting: the mixed material particle in step 1) is put in melting mixer, with the heating rate of 30 DEG C ~ 40 DEG C/h, reaction temperature to 200 ~ 210 DEG C of heating and melting mixer, keep temperature to stir 1 ~ 2h; Obtain mixed melting solution;
3) extrude curtain coating: by step 2) in mixed melting liquid extrude lower floor's melt film and upper strata melt film respectively through lower film casting machine and upper film casting machine, described upper film casting machine is arranged on the rear of lower film casting machine, aluminium foil roller is provided with between described upper film casting machine and lower film casting machine, aluminium foil is laid on lower floor's melt film by described aluminium foil roller uniformly, described upper film casting machine extrudes upper strata melt film uniform fold on aluminium foil, and the temperature of described casting machine outlet is 210 ~ 225 DEG C; Draw the product film of molten condition;
4) cooling forming is suppressed: the product film of molten condition in step 3) is cooled to 60 ~ 80 DEG C, ventilate, gap plate through being highly 3mm ~ 5mm in the process of ventilating is compressing, to be pressed into thickness from product film is 3mm ~ 5mm finished product, finished product is cooled to 15 DEG C ~ 20 DEG C through chill roll, and room temperature is launched to deposit 24h;
5) draw: the finished product obtained in step 4 is carried out draw operations by carry-over pinch rolls, described carry-over pinch rolls pulling speed be 30-32m/min;
6) corona: by cooling the plastic sheeting obtained in step (5), carry out sided corona treatment through corona treatment;
7) cut; The plastic sheeting both sides slitter edge obtained in step 6) is excised and batches packaging.
The device applied in production process of the present invention comprises lower film casting machine, upper film casting machine, aluminium foil roller, gap plate, air blowing pipeline, batch mixer and heating and melting mixer.
In compacting cooling forming process of the present invention, the both sides of gap plate are provided with multiple air vent, and described air vent is connected on air blowing pipeline by the road; The present invention adopts air-cooled operation, along with the cold wind that is blown in ventilating in pressing process, ensure that the uniform cooling effect of monolithic film membrane product, the situation of prevent partial thin film product to be heated deformation of thin membrane that inequality causes.
The discharging speed of upper film casting machine of the present invention is identical with discharging speed with the extrusion size of lower film casting machine; The upper film casting machine identical with discharging speed by extrusion size and lower film casting machine, ensure that the homogeneity of upper strata melt film and lower floor's melt film material and thickness in product, improve the ductility of integral product.
The extrusion length of the lower film casting machine of upper film casting machine of the present invention is greater than the length 2-3cm of aluminium foil roller; In order to ensure integral product every optical property, aluminium foil layer must all cover between two-layer melt film, facilitate follow-up cutting and shearing work, simultaneously in the work of cutting, the leftover pieces cut are for the recycling of raw material, the length of aluminium foil itself is less than the horizontal width of melt film, and therefore two-layer waste material can be directly used in raw materials recovery, contact cost.
The top of the charging aperture of gap plate of the present invention is provided with the rib structure of inclination; Assist charging by the rib structure tilted, the film preventing thickness larger carries out in the process of suppressing entering gap plate, and upper strata melt film is blocked in gap plate feed inlet end, causes the situation of film facestock skewness.
In batch mixing process of the present invention, the mass ratio of copolymerized type propene polymer particle, polyethylene particle and PETG is 2:1:1.
The invention has the advantages that: the present invention is by changing the aluminum plating process of conventional needle to film surface, change into and add one deck aluminium foil layer in the process of film forming, the thermal insulation film produced by the method not only remains its good heat-proof quality, have certain ductility, toughness is higher simultaneously, and in drawing process, aluminium foil is not fragile, service life is longer, save the application cost of thermal insulation film in different field, integrated artistic is simple to operate, substantially increases the operating efficiency of enterprise.
Accompanying drawing explanation
Fig. 1 is structure diagram of the present invention;
Wherein, 1 time film casting machine, film casting machine on 2,3 aluminium foil rollers, 4 gap plates, 5 rib structures, 6 air vents.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
embodiment 1:as shown in Figure 1, a kind of production technology of high-ductility thermal insulation film, its production technology comprises the steps:
1) batch mixing: copolymerized type propene polymer particle, polyethylene particle are screened through 200 object screen clothes, after having screened, put in batch mixer, then pet fiber section is added, wherein the mass ratio of copolymerized type propene polymer particle, polyethylene particle and PETG is 2:1:1, and use insulation jacket to keep the whipping temp of batch mixer in batch mixing process, whipping temp is 60 DEG C, stir 2h, after having stirred, obtain mixed material particle;
2) heating and melting: the mixed material particle in step 1) is put in melting mixer, with the heating rate of 40 DEG C/h, the reaction temperature to 210 DEG C of heating and melting mixer, keeps temperature to stir 2h; Obtain mixed melting solution;
3) extrude curtain coating: by step 2) in mixed melting liquid extrude lower floor's melt film and upper strata melt film respectively through lower film casting machine and upper film casting machine, described upper film casting machine is arranged on the rear of lower film casting machine, aluminium foil roller is provided with between described upper film casting machine and lower film casting machine, aluminium foil is laid on lower floor's melt film by described aluminium foil roller uniformly, the thickness of described aluminium foil is 0.10mm, described upper film casting machine extrudes upper strata melt film uniform fold on aluminium foil, and the temperature of described casting machine outlet is 210 DEG C; Draw the product film of molten condition;
4) cooling forming is suppressed: the product film of molten condition in step 3) is cooled to 60 DEG C, ventilate, gap plate through being highly 3mm in the process of ventilating is compressing, to be pressed into thickness from product film is 3mm finished product, finished product is cooled to 15 DEG C through chill roll, and room temperature is launched to deposit 24h;
5) draw: the finished product obtained in step 4 is carried out draw operations by carry-over pinch rolls, described carry-over pinch rolls pulling speed be 30m/min;
6) corona: by cooling the plastic sheeting obtained in step (5), carry out sided corona treatment through corona treatment;
7) cut; The plastic sheeting both sides slitter edge obtained in step 6) is excised and batches packaging.
Its surface tension 3.03N/m of the product film obtained, its thickness is the thermal conductivity factor of the product of 3mm is 0.13 W/ (m × K).
embodiment 2:as shown in Figure 1, a kind of production technology of high-ductility thermal insulation film, its production technology comprises the steps:
1) batch mixing: copolymerized type propene polymer particle, polyethylene particle are screened through 250 object screen clothes, after having screened, put in batch mixer, then pet fiber section is added, wherein the mass ratio of copolymerized type propene polymer particle, polyethylene particle and PETG is 2:1:1, and use insulation jacket to keep the whipping temp of batch mixer in batch mixing process, whipping temp is 65 DEG C, stir 3h, after having stirred, obtain mixed material particle;
2) heating and melting: the mixed material particle in step 1) is put in melting mixer, with the heating rate of 40 DEG C/h, the reaction temperature to 210 DEG C of heating and melting mixer, keeps temperature to stir 2h; Obtain mixed melting solution;
3) extrude curtain coating: by step 2) in mixed melting liquid extrude lower floor's melt film and upper strata melt film respectively through lower film casting machine and upper film casting machine, described upper film casting machine is arranged on the rear of lower film casting machine, aluminium foil roller is provided with between described upper film casting machine and lower film casting machine, aluminium foil is laid on lower floor's melt film by described aluminium foil roller uniformly, the thickness of described aluminium foil is 0.15mm, described upper film casting machine extrudes upper strata melt film uniform fold on aluminium foil, and the temperature of described casting machine outlet is 225 DEG C; Draw the product film of molten condition;
4) cooling forming is suppressed: the product film of molten condition in step 3) is cooled to 80 DEG C, ventilate, gap plate through being highly 5mm in the process of ventilating is compressing, to be pressed into thickness from product film is 5mm finished product, finished product is cooled to 20 DEG C through chill roll, and room temperature is launched to deposit 24h;
5) draw: the finished product obtained in step 4 is carried out draw operations by carry-over pinch rolls, described carry-over pinch rolls pulling speed be 32m/min;
6) corona: by cooling the plastic sheeting obtained in step (5), carry out sided corona treatment through corona treatment;
7) cut; The plastic sheeting both sides slitter edge obtained in step 6) is excised and batches packaging.
Its surface tension 3.22N/m of the product film obtained, its thickness is the thermal conductivity factor of the product of 4mm is 0.12 W/ (m × K).
embodiment 3:as shown in Figure 1, a kind of production technology of high-ductility thermal insulation film, its production technology comprises the steps:
1) batch mixing: copolymerized type propene polymer particle, polyethylene particle are screened through 220 object screen clothes, after having screened, put in batch mixer, then pet fiber section is added, wherein the mass ratio of copolymerized type propene polymer particle, polyethylene particle and PETG is 2:1:1, and use insulation jacket to keep the whipping temp of batch mixer in batch mixing process, whipping temp is 63 DEG C, stir 2.5h, after having stirred, obtain mixed material particle;
2) heating and melting: the mixed material particle in step 1) is put in melting mixer, with the heating rate of 35 DEG C/h, the reaction temperature to 205 DEG C of heating and melting mixer, keeps temperature to stir 1.5h; Obtain mixed melting solution;
3) extrude curtain coating: by step 2) in mixed melting liquid extrude lower floor's melt film and upper strata melt film respectively through lower film casting machine and upper film casting machine, described upper film casting machine is arranged on the rear of lower film casting machine, aluminium foil roller is provided with between described upper film casting machine and lower film casting machine, aluminium foil is laid on lower floor's melt film by described aluminium foil roller uniformly, the thickness of described aluminium foil is 0.12mm, described upper film casting machine extrudes upper strata melt film uniform fold on aluminium foil, and the temperature of described casting machine outlet is 220 DEG C; Draw the product film of molten condition;
4) cooling forming is suppressed: the product film of molten condition in step 3) is cooled to 70 DEG C, ventilate, gap plate through being highly 4mm in the process of ventilating is compressing, to be pressed into thickness from product film is 4mm finished product, finished product is cooled to 18 DEG C through chill roll, and room temperature is launched to deposit 24h;
5) draw: the finished product obtained in step 4 is carried out draw operations by carry-over pinch rolls, described carry-over pinch rolls pulling speed be 31m/min;
6) corona: by cooling the plastic sheeting obtained in step (5), carry out sided corona treatment through corona treatment;
7) cut; The plastic sheeting both sides slitter edge obtained in step 6) is excised and batches packaging.
Its surface tension 3.45N/m of the product film obtained, its thickness is the thermal conductivity factor of the product of 5mm is 0.10 W/ (m × K).
embodiment 4:as shown in Figure 1, in compacting cooling forming process of the present invention, the both sides of gap plate 4 are provided with multiple air vent 6, and described air vent 6 is connected on air blowing pipeline by the road; The present invention adopts air-cooled operation, along with the cold wind be blown in air vent 6 in pressing process, ensure that the uniform cooling effect of monolithic film membrane product, the situation of prevent partial thin film product to be heated deformation of thin membrane that inequality causes.
embodiment 5:as shown in Figure 1, the discharging speed of upper film casting machine 2 of the present invention is identical with discharging speed with the extrusion size of lower film casting machine 1; The upper film casting machine 2 identical with discharging speed by extrusion size and lower film casting machine 1, ensure that the homogeneity of upper strata melt film and lower floor's melt film material and thickness in product, improve the ductility of integral product.
embodiment 6:the extrusion length of the lower film casting machine 1 of upper film casting machine 2 of the present invention is greater than the length 2-3cm of aluminium foil roller 3; In order to ensure integral product every optical property, aluminium foil layer must all cover between two-layer melt film, facilitate follow-up cutting and shearing work, simultaneously in the work of cutting, the leftover pieces cut are for the recycling of raw material, the length of aluminium foil itself is less than the horizontal width of melt film, and therefore two-layer waste material can be directly used in raw materials recovery, contact cost.
embodiment 7:as shown in Figure 1, the top of the charging aperture of gap plate 4 of the present invention is provided with the rib structure 5 of inclination; Assist charging by the rib structure 5 tilted, the film preventing thickness larger carries out in the process of suppressing entering gap plate 4, and upper strata melt film is blocked in gap plate feed inlet end, causes the situation of film facestock skewness.
It should be noted that, above-mentioned is only preferred embodiment of the present invention, is not used for limiting protection scope of the present invention, and equivalents done on the basis of above-described embodiment all belongs to protection scope of the present invention.
Claims (7)
1. the production technology of a high-ductility thermal insulation film, it is characterized in that, described high-ductility heat insulation type film is formed through mixed melting by copolymerized type propene polymer particle, polyethylene particle and PETG, the middle part of described high-ductility heat insulation type film is provided with aluminium foil layer, the thickness of described aluminium foil layer is 0.10mm-0.15mm, and its production technology comprises the steps:
1) batch mixing: copolymerized type propene polymer particle, polyethylene particle are screened through 200-250 object screen cloth, after having screened, put in batch mixer, then pet fiber section is added, insulation jacket is used to keep the whipping temp of batch mixer in batch mixing process, whipping temp is 60 DEG C ~ 65 DEG C, stirs 2-3h, obtains mixed material particle after having stirred;
2) heating and melting: the mixed material particle in step 1) is put in melting mixer, with the heating rate of 30 DEG C ~ 40 DEG C/h, reaction temperature to 200 ~ 210 DEG C of heating and melting mixer, keep temperature to stir 1 ~ 2h; Obtain mixed melting solution;
3) extrude curtain coating: by step 2) in mixed melting liquid extrude lower floor's melt film and upper strata melt film respectively through lower film casting machine and upper film casting machine, described upper film casting machine is arranged on the rear of lower film casting machine, aluminium foil roller is provided with between described upper film casting machine and lower film casting machine, aluminium foil is laid on lower floor's melt film by described aluminium foil roller uniformly, described upper film casting machine extrudes upper strata melt film uniform fold on aluminium foil, and the temperature of described casting machine outlet is 210 ~ 225 DEG C; Draw the product film of molten condition;
4) cooling forming is suppressed: the product film of molten condition in step 3) is cooled to 60 ~ 80 DEG C, ventilate, gap plate through being highly 3mm ~ 5mm in the process of ventilating is compressing, to be pressed into thickness from product film is 3mm ~ 5mm finished product, finished product is cooled to 15 DEG C ~ 20 DEG C through chill roll, and room temperature is launched to deposit 24h;
5) draw: the finished product obtained in step 4 is carried out draw operations by carry-over pinch rolls, described carry-over pinch rolls pulling speed be 30-32m/min;
6) corona: by cooling the plastic sheeting obtained in step (5), carry out sided corona treatment through corona treatment;
7) cut; The plastic sheeting both sides slitter edge obtained in step 6) is excised and batches packaging.
2. the production technology of high-ductility thermal insulation film according to claim 1, is characterized in that, in described compacting cooling forming process, the both sides of gap plate are provided with multiple air vent, and described air vent is connected on air blowing pipeline by the road.
3. the production technology of high-ductility thermal insulation film according to claim 1, it is characterized in that, the device applied in described production process comprises lower film casting machine, upper film casting machine, aluminium foil roller, gap plate, air blowing pipeline, batch mixer and heating and melting mixer.
4. the production technology of the high-ductility thermal insulation film according to claim 1 or 3, is characterized in that, the discharging speed of described upper film casting machine is identical with discharging speed with the extrusion size of lower film casting machine.
5. the production technology of the high-ductility thermal insulation film according to claim 1 or 3, is characterized in that, the extrusion length of the lower film casting machine of described upper film casting machine is greater than the length 2 ~ 3cm of aluminium foil roller.
6. the production technology of the high-ductility thermal insulation film according to claim 1 or 3, is characterized in that, the top of the charging aperture of described gap plate is provided with the rib structure of inclination.
7. the production technology of high-ductility thermal insulation film according to claim 1, is characterized in that, in described batch mixing process, the mass ratio of copolymerized type propene polymer particle, polyethylene particle and PETG is 2:1:1.
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| CN109367047A (en) * | 2018-12-04 | 2019-02-22 | 无锡市三力胶带有限公司 | A kind of production equipment and its production technology of non-skid film |
| CN112455003A (en) * | 2020-11-18 | 2021-03-09 | 马鞍山华庆包装有限公司 | Manufacturing process of paper-plastic composite bag |
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Address after: 224055 Residential Committee of Louwang Town, Yandu District, Yancheng City, Jiangsu Province (O) Patentee after: Jiangsu Srida Material Technology Co., Ltd. Address before: 224031 Renmin Road, Louwang Industrial Park, Yandu District, Yancheng City, Jiangsu Province Patentee before: JIANGSU SIRUIDA NEW MATERIAL TECHNOLOGY CO., LTD. |