CN106142782B - One kind covers iron heat-sealable polyester film and preparation method thereof - Google Patents
One kind covers iron heat-sealable polyester film and preparation method thereof Download PDFInfo
- Publication number
- CN106142782B CN106142782B CN201510173415.3A CN201510173415A CN106142782B CN 106142782 B CN106142782 B CN 106142782B CN 201510173415 A CN201510173415 A CN 201510173415A CN 106142782 B CN106142782 B CN 106142782B
- Authority
- CN
- China
- Prior art keywords
- crystalline polyester
- film
- iron heat
- polyester film
- sealable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 37
- 229920006267 polyester film Polymers 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229920000728 polyester Polymers 0.000 claims abstract description 67
- 238000002844 melting Methods 0.000 claims abstract description 44
- 230000008018 melting Effects 0.000 claims abstract description 41
- 229920001519 homopolymer Polymers 0.000 claims abstract description 29
- 229920001634 Copolyester Polymers 0.000 claims abstract description 22
- 210000002615 epidermis Anatomy 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008602 contraction Effects 0.000 claims abstract description 6
- 238000003475 lamination Methods 0.000 claims abstract description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 52
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 45
- 239000010410 layer Substances 0.000 claims description 42
- 239000002994 raw material Substances 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 11
- 210000002469 basement membrane Anatomy 0.000 claims description 9
- 239000012792 core layer Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 6
- 238000006068 polycondensation reaction Methods 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 4
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical class OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- KUCOHFSKRZZVRO-UHFFFAOYSA-N terephthalaldehyde Chemical compound O=CC1=CC=C(C=O)C=C1 KUCOHFSKRZZVRO-UHFFFAOYSA-N 0.000 claims 1
- 238000001125 extrusion Methods 0.000 description 20
- 238000001816 cooling Methods 0.000 description 9
- 238000011045 prefiltration Methods 0.000 description 9
- 239000007888 film coating Substances 0.000 description 4
- 238000009501 film coating Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 235000019628 coolness Nutrition 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses one kind to cover iron heat-sealable polyester film and preparation method thereof, it is described to cover iron heat-sealable polyester film, be the sandwich layer of crystalline polyester homopolymer and copolyester with low melting point including main component, main component be mineral-modified crystalline polyester and crystalline polyester homopolymer with the upper epidermis and main component of mineral-modified crystalline polyester and low-melting point polyester copolymer layer, the upper and lower top layer coextru-lamination is in the upper and lower surface of the sandwich layer.The polyester film of the present invention not only has the good heat sealability with metallic plate, but also has the required contraction stability of metallic plate deep-draw process.
Description
Technical field
The invention belongs to technical field of macromolecules, and in particular to one kind covers iron heat-sealable polyester film and preparation method thereof.
Background technology
Application processing is all had to pass through on the inside of made of metal tank industry, traditional metal can, and used in application processing
Bisphenol-A class material containing environmental hormone in material, once it is exceeded dissolution occur, harmful shadow can be all produced to human body and environment
Ring.And metallic plate film coating technique utilizes the films such as PET, PVC or PP and sheet metal (galvanized sheet, cold-reduced sheet, aluminium sheet, stainless steel
Plate) carry out it is laminating form, without using sticker and solvent, there is very important meaning to environmental protection and food security etc.
Justice.Only rested in a small number of producer's hands such as Japan using the metallic plate film coating technique of common PET film, if PET film has
Heat seal property can be bonded together in case of heating with metallic plate, can substantially reduce the difficulty of metallic plate film coating technique, drop
Its low cost simultaneously can popularity metallic plate film coating technique, be conducive to the development and progress of industry.
The content of the invention
The object of the present invention is to provide a kind of heat-sealing type ployester series film that can be compound with metallic plate and this kind of film
Preparation method.
In order to solve the above technical problems, the technical scheme is that：
One kind covers iron heat-sealable polyester film, including upper epidermis, sandwich layer and layer three-decker, and wherein upper epidermis is by eutectic
Point polyester, mineral-modified crystalline polyester composition, sandwich layer are made of crystalline polyester homopolymer, copolyester with low melting point, following table
Layer is made of crystalline polyester homopolymer, mineral-modified crystalline polyester, and the upper and lower top layer coextru-lamination is in the sandwich layer
Upper and lower surface.
Wherein, the mineral-modified crystalline polyester homopolymer is by inorganic matter, terephthalic acid (TPA), ethylene glycol polymerization
Obtained polyester homopolymer, wherein, inorganic matter：Terephthalic acid (TPA)：Ethylene glycol=0.1-2.5wt%：60~70wt%：30~
40wt%, the vacuum of 20-50ppm is used in polycondensation process, and reaction temperature is 270-285 DEG C, reaction time 2-4h.It is described
Inorganic matter is silica (SiO2) class nucleator, its particle size range is 10~4000nm.
As a preferred embodiment, the particle diameter of the inorganic matter is 1000~3000nm.
The crystalline polyester homopolymer is the polyester homopolymer being polymerize by terephthalic acid (TPA), ethylene glycol, wherein, it is right
Phthalic acid：Ethylene glycol=55~70wt%：30~45wt%, the vacuum of 20-50ppm, reaction temperature are used in polycondensation process
Spend for 270-290 DEG C, reaction time 2-4h.
The copolyester with low melting point is by terephthalic acid (TPA), M-phthalic acid, ethylene glycol, 2,2- dimethyl -1,3 propane diols
Obtained polyester copolymer is copolymerized, wherein, terephthalic acid (TPA)：M-phthalic acid：Ethylene glycol：2,2- dimethyl -1,3 propane diols=
50~65wt%：3~17wt%：24~35wt%：3~10wt%, the vacuum of 20-50ppm, reaction are used in polymerization process
Temperature is 270-285 DEG C, reaction time 2-4h.
The fusing point of the mineral-modified crystalline polyester is 256~262 DEG C, and the crystalline polyester homopolymer melts
Point is 258~262 DEG C, and the fusing point of the copolyester with low melting point is 180~230 DEG C.
As a preferred embodiment, the fusing point of the crystalline polyester homopolymer is 260~262 DEG C.
As a preferred embodiment, the fusing point of the copolyester with low melting point is 200~225 DEG C.
As a preferred embodiment, the fusing point of the mineral-modified crystalline polyester is 260~262 DEG C.
The inherent viscosity of the mineral-modified crystalline polyester is 0.60~0.80dl/g, the crystalline polyester copolymer
Inherent viscosity be 0.62~0.70dl/g, the inherent viscosity of the low melting point amorphous polyester is 0.72~0.86dl/g.
As a preferred embodiment, the inherent viscosity of the mineral-modified crystalline polyester is 0.64~0.70dl/g.
As a preferred embodiment, the inherent viscosity of the crystalline polyester homopolymer is 0.65~0.70dl/g.
As a preferred embodiment, the inherent viscosity of the copolyester with low melting point is 0.74~0.82dl/g.
The density for covering iron heat-sealable polyester film is 1.30~1.40g/m2, the thickness for covering iron heat-sealable polyester film
For 10~60 μm, the thickness of the sandwich layer is 8~50 μm.
The longitudinal contraction rate of the iron heat-sealable polyester film in 170 DEG C, 10min hot-airs of covering is 0~2%, is laterally received
Shrinkage is -5~2%.
The heat seal strength of the iron heat-sealable polyester film under 140 DEG C, 400N, 2s that cover is not less than 3N/15mm.
A kind of preparation method for covering iron heat-sealable polyester film, comprises the following steps：
(1) mineral-modified crystalline polyester and copolyester with low melting point are pressed into 1~20wt%：80~99wt%'s matches somebody with somebody
Than mixing the raw material as film upper strata, melt at a temperature of 260~280 DEG C, extruded with double screw extruder；
(2) crystalline polyester homopolymer, low melting point copolymer will be used to press 10~90wt%：The proportioning of 10~90wt% is mixed
Close, respectively as the raw material of film sandwich layer, melt at a temperature of 260~285 DEG C, extruded with double screw extruder；
(3) mineral-modified crystalline polyester and crystalline polyester homopolymer are pressed into 1~60wt%：40~99wt%
Raw material of the proportioning mixing as film lower floor, melt at a temperature of 260~280 DEG C, extruded with double screw extruder；
(4) by the upper and lower top layer raw material after the core layer raw material after melting and melting, it is molded through three layers of compound die coextrusion head,
Chilling is into slab at a temperature of 10~40 DEG C；
(5) by the slab made in step (4) after preheating at a temperature of 70~90 DEG C, then 80~90 DEG C of progress longitudinal directions
Stretching obtains basement membrane, and draw ratio is 3.00~4.50；
(6) by the slab made in step (5) after preheating at a temperature of 90~110 DEG C, then in 100~130 DEG C of progress
Cross directional stretch obtains final film, and draw ratio is 3.00~5.00.
The beneficial effects of the invention are as follows：
The present invention's covers iron heat-sealable polyester film, the main component low-melting point polyester copolymer of its upper epidermis, since this is common
Polymers is since with relatively low fusing point, excellent heat sealability and stretching film forming, this realizes required with monolithic metal etc.
Heat sealability；Due to containing a certain proportion of mineral-modified crystalline polyester in the upper and lower top layer of the film, which gathers
Ester has good smoothness, this, which is realized, covers the required Kekelé structure count of iron heat sealing film；Due to containing certain proportion in sandwich layer
Low-melting point polyester copolymer, with upper epidermis have good attachment fastness, it can be achieved that application of the film-covered iron during deep-draw.
Embodiment
With reference to specific embodiment, the present invention is further explained.
The preparation method of mineral-modified crystalline polyester：The particle diameter that mass fraction is 0.3~1.5% is 1000~
The silica of 3000nm, the terephthalic acid (TPA) of 62~68wt%, 32~38wt% ethylene glycol mixture, be in vacuum
20ppm, under conditions of reaction temperature is 275 DEG C, polycondensation reaction 3.5h.
The preparation method of copolyester with low melting point：The terephthalic acid (TPA) of 58~62wt%, the M-phthalic acid of 4~8wt%, 22
The mixture of the ethylene glycol of~32wt%, 2,2- dimethyl -1,3 propane diols of 5~10wt%, is 20ppm in vacuum, reaction
Under conditions of temperature is 275~285 DEG C, polycondensation reaction 4h.
Embodiment 1
By the crystalline polyester homopolymer that fusing point is 260 DEG C, fusing point is 220 DEG C of copolyester with low melting point, according to 50wt%：
The ratio of 50wt%, which is mixed as core layer raw material, enters double screw extruder, the melting extrusion at 270 DEG C, the molten condition of extrusion
Mixture through prefilter, metering pump, main filter, into die head.
By by the mineral-modified crystalline polyester that copolyester with low melting point and fusing point that fusing point is 220 DEG C are 258 DEG C by
According to 90wt%：The content of 10wt% is than mixing, as upper epidermis raw material；Then, mixture is put into double screw extruder,
Melting extrusion is carried out to mixture at a temperature of 270 DEG C.The mixture of the molten condition of extrusion is by being installed on twin-screw extrusion
Vacuum extractor at machine removes moisture and oligomer, then through prefilter, metering pump, main filter, into die head.
By be 258 DEG C by crystalline polyester homopolymer and fusing point that fusing point is 260 DEG C mineral-modified crystal type gather
Ester is according to 90wt%：The content of 10wt% is than mixing, as layer raw material；Then, mixture is put into double screw extruder,
Melting extrusion is carried out to mixture at a temperature of 275 DEG C.The mixture of the molten condition of extrusion is squeezed by being installed on twin-screw
The vacuum extractor gone out at machine removes moisture and oligomer, then through prefilter, metering pump, main filter, into die head.
By the core layer raw material after melting and upper and lower top layer raw material, the coextrusion mold after three-layer co-extruded compound die head converges,
Through 30 DEG C of rapid coolings into slab on chilling roller.
After the slab that cooling obtains is preheated at 80 DEG C, then carry out longitudinal stretchings at 85 DEG C and obtain basement membrane, draw ratio
For 3.20.
After obtained basement membrane is preheated at 100 DEG C, then carry out cross directional stretch at 110 DEG C and obtain film, draw ratio is
3.50。
Film is through cooling down, cutting, to obtain density be 1.35g/m for static elimination and winding2Multi-layer co-extruded shrinkable film, institute
The thickness for stating film is 12 μm, and the thickness of the sandwich layer is 8 μm, and the thickness on upper and lower top layer is 2 μm.This covers iron heat-sealable polyester
Longitudinal contraction rate of the film in 170 DEG C, 30min hot-airs is 1%, lateral shrinkage 0%.This covers iron heat-sealable polyester film
Heat seal strength be 4.5N/15mm.
Embodiment 2
By the crystalline polyester homopolymer that fusing point is 262 DEG C, fusing point is 210 DEG C of copolyester with low melting point, according to 40wt%：
The ratio of 60wt%, which is mixed as core layer raw material, enters double screw extruder, the melting extrusion at 265 DEG C, the molten condition of extrusion
Mixture through prefilter, metering pump, main filter, into die head.
By by the mineral-modified crystalline polyester that copolyester with low melting point and fusing point that fusing point is 210 DEG C are 260 DEG C by
According to 95wt%：The content of 5wt% is than mixing, as upper epidermis raw material；Then, mixture is put into double screw extruder, 265
Melting extrusion is carried out to mixture at a temperature of DEG C.The mixture of the molten condition of extrusion is by being installed at double screw extruder
Vacuum extractor remove moisture and oligomer, then through prefilter, metering pump, main filter, into die head.
By be 260 DEG C by crystalline polyester homopolymer and fusing point that fusing point is 262 DEG C mineral-modified crystal type gather
Ester is according to 95wt%：The content of 5wt% is than mixing, as layer raw material；Then, mixture is put into double screw extruder,
Melting extrusion is carried out to mixture at a temperature of 275 DEG C.The mixture of the molten condition of extrusion is squeezed by being installed on twin-screw
The vacuum extractor gone out at machine removes moisture and oligomer, then through prefilter, metering pump, main filter, into die head.
By the core layer raw material after melting and upper and lower top layer raw material, the coextrusion mold after three-layer co-extruded compound die head converges,
Through 20 DEG C of rapid coolings into slab on chilling roller.
After the slab that cooling obtains is preheated at 90 DEG C, then carry out longitudinal stretchings at 88 DEG C and obtain basement membrane, draw ratio
For 3.50.
After obtained basement membrane is continued preheating at 110 DEG C, then carry out cross directional stretch at 120 DEG C and obtain film, stretching times
Number is 3.80.
Film is through cooling down, cutting, to obtain density be 1.34g/m for static elimination and winding2Multi-layer co-extruded shrinkable film, institute
The thickness for stating film is 20 μm, and the thickness of the sandwich layer is 14 μm, and the thickness on upper and lower top layer is 3 μm.This covers iron heat-sealable polyester
Longitudinal contraction rate of the film in 170 DEG C, 30min hot-airs is 1.5%, and lateral shrinkage is -1%.This covers iron heat-sealable polyester
The heat seal strength of film is 6N/15mm.
Embodiment 3
By the crystalline polyester homopolymer that fusing point is 258 DEG C, fusing point is 200 DEG C of copolyester with low melting point, according to 70wt%：
The ratio of 30wt%, which is mixed as core layer raw material, enters double screw extruder, the melting extrusion at 270 DEG C, the molten condition of extrusion
Mixture through prefilter, metering pump, main filter, into die head.
By by the mineral-modified crystalline polyester that copolyester with low melting point and fusing point that fusing point is 200 DEG C are 262 DEG C by
According to 85wt%：The content of 15wt% is than mixing, as upper epidermis raw material；Then, mixture is put into double screw extruder,
Melting extrusion is carried out to mixture at a temperature of 270 DEG C.The mixture of the molten condition of extrusion is by being installed on twin-screw extrusion
Vacuum extractor at machine removes moisture and oligomer, then through prefilter, metering pump, main filter, into die head.
By be 262 DEG C by crystalline polyester homopolymer and fusing point that fusing point is 258 DEG C mineral-modified crystal type gather
Ester is according to 85wt%：The content of 15wt% is than mixing, as layer raw material；Then, mixture is put into double screw extruder,
Melting extrusion is carried out to mixture at a temperature of 280 DEG C.The mixture of the molten condition of extrusion is squeezed by being installed on twin-screw
The vacuum extractor gone out at machine removes moisture and oligomer, then through prefilter, metering pump, main filter, into die head.
By the core layer raw material after melting and upper and lower top layer raw material, the coextrusion mold after three-layer co-extruded compound die head converges,
Through 25 DEG C of rapid coolings into slab on chilling roller.
After the slab that cooling obtains is preheated at 75 DEG C, then carry out longitudinal stretchings at 80 DEG C and obtain basement membrane, draw ratio
For 3.10.
After obtained basement membrane is continued preheating at 105 DEG C, then carry out cross directional stretch at 125 DEG C and obtain film, stretching times
Number is 4.10.
Film is through cooling down, cutting, to obtain density be 1.37g/m for static elimination and winding2Multi-layer co-extruded shrinkable film, institute
The thickness for stating film is 15 μm, and the thickness of the sandwich layer is 10 μm, and the thickness on upper and lower top layer is 2.5 μm.It is poly- that this covers iron heat-sealing
Longitudinal contraction rate of the ester film in 170 DEG C, 30min hot-airs is 0%, lateral shrinkage 0%.It is thin that this covers iron heat-sealable polyester
The heat seal strength of film is 4N/15mm.
Although the above-mentioned embodiment to the present invention is described, not to the limit of the scope of the present invention
System, those skilled in the art should understand that, on the basis of technical scheme, those skilled in the art need not pay
Go out various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (13)
1. one kind covers iron heat-sealable polyester film, it is characterised in that：Including upper epidermis, sandwich layer and layer three-decker, wherein on
Top layer is made of copolyester with low melting point, mineral-modified crystalline polyester；The copolyester with low melting point be by terephthalic acid (TPA),
The polyester copolymer that M-phthalic acid, ethylene glycol, 2,2- dimethyl -1,3 propane diols are copolymerized, wherein, terephthalic acid (TPA)：Between
Phthalic acid：Ethylene glycol：2,2- dimethyl -1,3 propane diols=50~65wt%：3~17wt%：24~35wt%：3~
10wt%, the vacuum of 20-50ppm is used in polymerization process, and reaction temperature is 270-285 DEG C, reaction time 2-4h；
The mineral-modified crystalline polyester is the polyester homopolymerization being polymerize by inorganic matter, terephthalic acid (TPA), ethylene glycol
Thing, wherein, inorganic matter：Terephthalic acid (TPA)：Ethylene glycol=0.1-2.5wt%：60~70wt%：30~40wt%, it is described inorganic
The sum of percentage by weight of thing, terephthalic acid (TPA) and ethylene glycol three is 100%；The vacuum of 20-50ppm is used in polycondensation process
Degree, reaction temperature are 270-285 DEG C, reaction time 2-4h；The inorganic matter is silica-based nucleator, its particle size range
For 10~4000nm；
Sandwich layer is made of crystalline polyester homopolymer, copolyester with low melting point, and the crystalline polyester homopolymer is by terephthaldehyde
The polyester homopolymer that acid, ethylene glycol polymerize, wherein, terephthalic acid (TPA)：Ethylene glycol=55~70wt%：30~45wt%,
The vacuum of 20-50ppm is used in polycondensation process, reaction temperature is 270-290 DEG C, reaction time 2-4h；Layer is by tying
Crystalline polyester homopolymer, mineral-modified crystalline polyester composition, mineral-modified crystalline polyester and crystal type gather
Ester homopolymer presses 1~60wt%：Raw material of the proportioning mixing of 40~99wt% as film lower floor；The crystalline polyester homopolymerization
The inherent viscosity of thing is 0.62~0.70dl/g, the inherent viscosity of the mineral-modified crystalline polyester for 0.60~
0.80dl/g；
The inherent viscosity of the copolyester with low melting point is 0.72~0.86dl/g；
The upper and lower top layer coextru-lamination is in the upper and lower surface of the sandwich layer.
2. cover iron heat-sealable polyester film as claimed in claim 1, it is characterised in that：The particle diameter of the inorganic matter for 1000~
3000nm。
3. cover iron heat-sealable polyester film as claimed in claim 1, it is characterised in that：The mineral-modified crystalline polyester
Fusing point be 256~262 DEG C, the fusing point of the crystalline polyester homopolymer is 258~262 DEG C, the copolyester with low melting point
Fusing point is 180~230 DEG C.
4. cover iron heat-sealable polyester film as claimed in claim 3, it is characterised in that：The fusing point of the crystalline polyester homopolymer
For 260~262 DEG C.
5. cover iron heat-sealable polyester film as claimed in claim 3, it is characterised in that：The fusing point of the copolyester with low melting point is
200~225 DEG C.
6. cover iron heat-sealable polyester film as claimed in claim 3, it is characterised in that：The mineral-modified crystalline polyester
Fusing point be 260~262 DEG C.
7. cover iron heat-sealable polyester film as claimed in claim 1, it is characterised in that：The mineral-modified crystalline polyester
Inherent viscosity be 0.64~0.70dl/g.
8. cover iron heat-sealable polyester film as claimed in claim 1, it is characterised in that：The characteristic of the crystalline polyester homopolymer
Viscosity is 0.65~0.70dl/g.
9. cover iron heat-sealable polyester film as claimed in claim 1, it is characterised in that：The inherent viscosity of the copolyester with low melting point
For 0.74~0.82dl/g.
10. cover iron heat-sealable polyester film as claimed in claim 1, it is characterised in that：It is described to cover the close of iron heat-sealable polyester film
Spend for 1.30~1.40g/m2, the thickness for covering iron heat-sealable polyester film is 10~60 μm, and the thickness of the sandwich layer is 8~50
μm。
11. cover iron heat-sealable polyester film as claimed in claim 1, it is characterised in that：The iron heat-sealable polyester film that covers is 170
DEG C, the longitudinal contraction rate in 10min hot-airs is 0~2%, and lateral shrinkage is -5~2%.
12. cover iron heat-sealable polyester film as claimed in claim 1, it is characterised in that：The iron heat-sealable polyester film that covers is 140
DEG C, the heat seal strength under 400N, 2s is not less than 3N/15mm.
13. any preparation method for covering iron heat-sealable polyester film according to claim 1-12, comprises the following steps：
(1) mineral-modified crystalline polyester and copolyester with low melting point are pressed into 1~20wt%：The proportioning of 80~99wt% is mixed
Cooperate for the raw material of film upper epidermis, to melt at a temperature of 260~280 DEG C, extruded with double screw extruder；
(2) crystalline polyester homopolymer, low melting point copolymer will be used to press 10~90wt%：The proportioning mixing of 10~90wt%, point
Raw material not as film sandwich layer, melts at a temperature of 260~285 DEG C, is extruded with double screw extruder；
(3) mineral-modified crystalline polyester and crystalline polyester homopolymer are pressed into 1~60wt%：40~99wt%'s matches somebody with somebody
Than mixing the raw material as film layer, melt at a temperature of 260~280 DEG C, extruded with double screw extruder；
(4) by the upper and lower top layer raw material after the core layer raw material after melting and melting, it is molded through three layers of compound die coextrusion head, 10
Chilling is into slab at a temperature of~40 DEG C；
(5) by the slab made in step (4) after preheating at a temperature of 70~90 DEG C, then in 80~90 DEG C of progress longitudinal stretchings
Basement membrane is obtained, draw ratio is 3.00~4.50；
(6) by the basement membrane made in step (5) after preheating at a temperature of 90~110 DEG C, then in 100~130 DEG C of progress laterally
Stretching obtains final film, and draw ratio is 3.00~5.00.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510173415.3A CN106142782B (en) | 2015-04-13 | 2015-04-13 | One kind covers iron heat-sealable polyester film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510173415.3A CN106142782B (en) | 2015-04-13 | 2015-04-13 | One kind covers iron heat-sealable polyester film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106142782A CN106142782A (en) | 2016-11-23 |
| CN106142782B true CN106142782B (en) | 2018-05-08 |
Family
ID=57336484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510173415.3A Active CN106142782B (en) | 2015-04-13 | 2015-04-13 | One kind covers iron heat-sealable polyester film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106142782B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957616B (en) * | 2017-05-05 | 2020-09-15 | 杭州大华塑业有限公司 | Printable iron-coated film and preparation method thereof |
| CN109251485B (en) * | 2018-07-05 | 2020-09-18 | 安徽国风塑业股份有限公司 | BOPET film for metal compounding and preparation method thereof |
| CN110920168B (en) | 2018-09-19 | 2021-02-19 | 宝山钢铁股份有限公司 | Double-layer polyester film and film-coated metal plate |
| CN110920170A (en) | 2018-09-19 | 2020-03-27 | 宝山钢铁股份有限公司 | Single-layer polyester film and film-coated metal plate |
| CN111409337B (en) * | 2019-12-31 | 2022-05-31 | 树业环保科技股份有限公司 | Environment-friendly flexible matte polyester film for door plate and preparation method thereof |
| CN112046107B (en) * | 2020-08-05 | 2022-05-31 | 树业环保科技股份有限公司 | Alkali-resistant scratch-resistant steam-resistant polyester coated iron film and preparation method and application thereof |
| CN112659691A (en) * | 2021-03-15 | 2021-04-16 | 富维薄膜（山东）有限公司 | Polyester film for fire-resistant dry film resist and preparation method thereof |
| CN114407474B (en) * | 2022-03-30 | 2022-06-28 | 宁波长阳科技股份有限公司 | High-temperature-resistant lubricating polyester base film and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI281891B (en) * | 2002-03-01 | 2007-06-01 | Teijin Ltd | Biaxially oriented multi-layered laminated film and method for manufacture thereof |
| CN103640237B (en) * | 2013-09-29 | 2016-01-27 | 桐城市福润包装材料有限公司 | A kind of production technology of heat shrinkable polyester film |
-
2015
- 2015-04-13 CN CN201510173415.3A patent/CN106142782B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106142782A (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106142782B (en) | One kind covers iron heat-sealable polyester film and preparation method thereof | |
| CN109070558A (en) | Polyvinyl laminate film structure with barrier property | |
| CN101367285B (en) | Polyester film and methods for making same | |
| CN103182821B (en) | A kind of modified polyamide laminated film and preparation method thereof | |
| CN104327347B (en) | It is a kind of for high molecular bonding resin of non-PVC medical infusion bags and preparation method thereof | |
| CN109049746B (en) | Production process of aluminum-plastic panel | |
| CN103722861B (en) | The preparation method of the PVC profile of metal film is covered on a kind of surface | |
| CN111716857A (en) | Melt co-extrusion multilayer composite high-barrier film, preparation method and application thereof | |
| CN102070882A (en) | Polyester film for being adhered to surface of metal thin plate and manufacture method thereof | |
| CN102806735A (en) | High-fastness aluminum plating polypropylene (PP) film and production process thereof | |
| CN103722747A (en) | Preparation method of metal coated PVC (Polyvinyl Chloride) sectional material for improving plasticity | |
| CN103223759A (en) | Biaxially oriented polypropylene hot-pressing film and its making process | |
| CN113844069A (en) | Preparation method of recyclable high-barrier high-strength composite film | |
| CN102765190A (en) | Method for producing biaxially oriented multilayer co-extruded polyolefin shrink film by flat film process | |
| CN102352063A (en) | Oxygen barrier composite material and preparation method thereof | |
| CN104647849A (en) | Production method for high-adhesion high-surface-tension CPP aluminum-plating film | |
| CN109732830A (en) | A kind of FEP film, the preparation method and the usage of punching | |
| DE4218369A1 (en) | Process for the production of a metal-plastic film composite, metal-plastic film composite produced by this process and its use for the production of packaging containers | |
| CN103223758B (en) | A kind of architectural engineering BOPET film and preparation method thereof | |
| CN102950858A (en) | Heat-seal two-way-stretch polypropylene aluminized-based film and manufacturing method thereof | |
| CN115871302A (en) | Cast polypropylene composite film for new energy battery aluminum plastic film and preparation method | |
| CN202200615U (en) | Modified polyamide/polypropylene glueless coextrusion high-barrier casting film | |
| CN101735528A (en) | Polyvinyl chloride laminated soft sheet and preparation technology thereof | |
| CN108943948B (en) | Wine cellar lining cast polypropylene film and preparation method thereof | |
| CN104608453B (en) | A kind of contagion gown uvioresistant thin film and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20161123 Assignee: Shuye Aisikai Environmental Protection Materials (Shantou) Co.,Ltd. Assignor: SHUYE ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Contract record no.: X2023980035024 Denomination of invention: An iron-coated heat-sealed polyester film and its preparation method Granted publication date: 20180508 License type: Exclusive License Record date: 20230424 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20240329 Granted publication date: 20180508 |
|
| PP01 | Preservation of patent right |