CN110065281A - A kind of BOPP two-sided heat-sealing film and preparation method thereof - Google Patents
A kind of BOPP two-sided heat-sealing film and preparation method thereof Download PDFInfo
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- CN110065281A CN110065281A CN201910319194.4A CN201910319194A CN110065281A CN 110065281 A CN110065281 A CN 110065281A CN 201910319194 A CN201910319194 A CN 201910319194A CN 110065281 A CN110065281 A CN 110065281A
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- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 40
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000010410 layer Substances 0.000 claims abstract description 83
- 239000011347 resin Substances 0.000 claims abstract description 37
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000004743 Polypropylene Substances 0.000 claims abstract description 28
- 229920001155 polypropylene Polymers 0.000 claims abstract description 25
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000002344 surface layer Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 31
- 239000002216 antistatic agent Substances 0.000 claims description 24
- -1 polypropylene Polymers 0.000 claims description 17
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 11
- 150000002148 esters Chemical class 0.000 claims description 9
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 9
- 238000003851 corona treatment Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- 239000012792 core layer Substances 0.000 claims description 4
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical group CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical class CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 2
- 238000005266 casting Methods 0.000 claims 1
- 238000005461 lubrication Methods 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 239000004408 titanium dioxide Substances 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000012528 membrane Substances 0.000 abstract description 8
- 238000001125 extrusion Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 5
- 239000012790 adhesive layer Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 231100000331 toxic Toxicity 0.000 abstract description 3
- 230000002588 toxic effect Effects 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 239000011229 interlayer Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 55
- 230000000052 comparative effect Effects 0.000 description 9
- 235000019504 cigarettes Nutrition 0.000 description 7
- 229920002125 Sokalan® Polymers 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 239000004584 polyacrylic acid Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000000181 anti-adherent effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000057114 Sapium sebiferum Species 0.000 description 1
- 235000005128 Sapium sebiferum Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
Abstract
A kind of BOPP two-sided heat-sealing film, including sandwich layer (1) and outer layer (3) are provided with time surface layer (2) between sandwich layer and outer layer；Wherein, the material on secondary surface layer is polypropylene-base binding resin, and the material of sandwich layer is polypropene composition, and the material of outer layer is PETG resin combination.The present invention uses BOPP film as sandwich layer, and PETG resin is main material as outer layer, and BOPP two-sided heat-sealing film of the invention is made to have the advantages that wear-resisting flower, preparation process difficulty are low (horizontal when production, longitudinal membrane is good).Further, the present invention is by joined the adhesive layer (secondary surface layer) using polypropylene-base binding resin as material in sandwich layer and outer interlayer, it solves BOPP film and PETG film is easy the defect of sliding, removing, and it can be prepared by unified extrusion, the technique of membrane, concise in technology, production qualification rate are high.Compared to using transparent glue to bond, concise in technology, environmental protection (solvent of transparent glue is usually toxic) and peeling force and heat seal strength are good.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly to a kind of BOPP two-sided heat-sealing film and its preparation side
Method.
Background technique
With the raising of living standards of the people and the enhancing of environmental consciousness, the requirement to product packaging is higher and higher, both wishes
Hope it is beautiful, and can environmental protection can either wire up transparent for the barrel packaging of some packaging fields, such as cigarette, do not allow
Easily mill flower, guarantees its aesthetics, and can remove item packet carton, plays environment protecting, for the application field of this kind of demand, is intended to
Develop a kind of novel B OPP heat sealing film for meeting the above demand.Current major part BOPP heat sealing film is all by being arranged altogether
Poly- PP has certain heat sealability as surface layer, but since copolymerization PP surface hardness is lower, is packing and transporting
It is easy to cause film surface to wear in journey, scratch occurs, seriously affect the aesthetics of packaging, especially cigarette pack field, because
This many BOPP manufacturing enterprise has all carried out the study on the modification of this respect, and has related patents to disclose:
Chinese patent CN206264524U discloses a kind of high light smoke film of wear-resisting type, and it includes 3-tier architectures: middle layer is equal
Poly- polypropylene layer, the copolymer polypropylene layer of upper and lower surfaces contain the irregular sphere of anti abrasive rule in copolymer polypropylene layer
Organic matter filler, to increase abrasion resistance properties.Chinese patent CN106315009A discloses a kind of resistance to colored cigarette film, for 3 layers of knot
Structure: the upper and lower surfaces of the intermediate core layer of homopolypropylene composition, copolymer polypropylene and modified polyacrylate and nucleating agent composition
Layer.The three-decker film is mainly the abrasion resistance properties for passing through the polyacrylate increase surface layer that surface layer is mixed with rub resistance, can
With standby by co-extrusion.
Chinese patent CN103252960B discloses a kind of wear-resisting cigarette pack film, wherein having 3-tier architecture: middle layer
BOPP film layer, middle layer upper and lower surfaces are equipped with polyacrylic acid ester layer, if polyacrylic acid ester layer is equipped with the transparent UV solidification of dry-packing
The pit of coating, wherein middle layer and polyacrylic acid ester layer are bonded by transparent glue.The cigarette pack film mainly passes through resistance to
The polyacrylic acid ester layer of friction increases crocking resistance, and still, preparation process is to coat on the intermediate layer film prepared
Transparent glue, after drying on transparent glue polyacrylic acid coating ester solution, again baking and curing.Its complex process, assembly line
It is long, and the glue coated be easy uneven and solvent volatilization be easy to produce bubble (and workshop air is caused to pollute,
Need to increase air draft, purify air device and increase cost), rejection rate is higher, and the UV layer crocking resistance on surface is insufficient,
The demand of the rub resistance of cigarette pack film cannot sufficiently be met.
Chinese patent CN101362539B discloses a kind of polyester film for shrinkable cigarette pack, with three-layered node
Structure: the main component of core layer formulation is that PETG+PET is sliced, the main component PETG of upper and lower surfaces layer formula, and three-decker is logical
Cross direct coextru-lamination.PETG film has good abrasion resistance properties, and still, sandwich layer is that PETG+PET slice is mainly to match
The film layer of side, draftability is bad when preparation, and technology difficulty is higher when leading to production, and resistance to steam permeance property is also insufficient.
Summary of the invention
The object of the present invention is to provide a kind of BOPP two-sided heat-sealing film, with wear-resisting flower, preparation process it is succinct,
Outer layer and sandwich layer are not easy the advantages of sliding, removing.
Another object of the present invention is to provide the preparation method of above-mentioned BOPP two-sided heat-sealing film, preparation process is succinct,
Environmental protection.
The present invention is achieved by the following technical solutions:
A kind of BOPP two-sided heat-sealing film, including sandwich layer and outer layer are provided with time surface layer between sandwich layer and outer layer；Its
In, the material of sandwich layer is polypropene composition, and the material on secondary surface layer is polypropylene-base binding resin, and the material of outer layer is PETG tree
Oil/fat composition.
The material of sandwich layer is BOPP film, and tensile property good (can be stretched with 4 × 8 times), barrier steam are good, as outer layer
The wear-resisting colored performance of PETG resin combination is good, and therefore, two kinds of material films are compound to be prepared into BOPP two-sided heat-sealing film, wear-resisting
Flower, and a co-extrusion, the preparation method of transverse and longitudinal stretching can be used to produce, reduction is produced into difficulty, improves yield.
Further, as shown in Figure of description 1, time surface layer (2) is being provided between sandwich layer and outer layer, secondary surface layer
Material is polypropylene-base binding resin.
The caking property of the sandwich layer and the outer membrane of PETG resin combination of BOPP film composition is lower, and each layer is thin when in use
Sliding and removing are easy between film.Therefore, further it is arranged between outer layer and sandwich layer and is made of polypropylene-base binding resin
Secondary surface layer (adhesive layer), using this be formulated adhesive layer, solve when being produced using transparent glue toxic solvent volatilization ask
Inscribe (not environmentally), air bubble problem (qualification rate is low).Also, due to using polypropylene-base binding resin, can by a co-extrusion,
The preparation process of transverse and longitudinal membrane produces film, improves production efficiency, reduces production cost.
Also, polypropylene-base binding resin is used, bonds, improves wear-resisting with using transparent glue compared to adhesive-less layer
Flower performance.
The polypropene composition, by weight, including 70-100 parts of homopolypropylene, 0-20 parts of petroleum trees
Rouge, 0-5 part antistatic agent, 0-5 parts of slipping agents.
Contain Petropols in polypropene composition, the processing performance and film of polypropene composition can be improved
Physical mechanical property and optical property.
Petropols are selected from nine hydrogenated petroleum resin of light dydrocarbon or carbon.
In the embodiment of the present invention, the melt index of homopolypropylene can be 2~4g/10min, GB/T 3682.1-
2018。
In polypropene composition, the antistatic agent in amine-based antistatic agent, esters antistatic agent at least one
Kind；The slipping agent is selected from least one of erucyl amide class slipping agent, oleamide class slipping agent.
The polypropylene-base binding resin is maleic anhydride inoculated polypropylene binding resin, grafting rate 0.1-
2.0%, melt index 4~8g/10min, GB/T 3682.1-2018.
The maleic anhydride inoculated polypropylene binding resin can be pure maleic anhydride inoculated polypropylene, be also possible to horse
Maleic anhydride grafted polypropylene composition may include other auxiliary agents, such as slipping agent, antioxidant, UV resistant agent in composition.
The auxiliary agent is also possible to other additives.In maleic anhydride inoculated polypropylene composition, maleic anhydride inoculated polypropylene is
Main component accounts for 80% of weight percent or more.
The PETG resin combination by weight, including 94-100 parts of PETG resins, 0-2 parts of antistatic agents, 0-2
Part caking inhibiter, 0-2 parts of slipping agents.
In PETG resin combination, the PETG resin properties viscosity 0.65-0.85dl/g；The antistatic agent choosing
From at least one of amine-based antistatic agent, esters antistatic agent；The slipping agent is selected from silicone slipping agent, erucyl amide
At least one of class slipping agent；The caking inhibiter in silica, clay, diatomite, glass microballoon at least
It is a kind of.
The core layer thickness is 0.1-68.8 microns, secondary skin depth is 0.3-3 microns, outer layer thickness is 0.3-3 micro-
Rice.If the thickness on secondary surface layer is lower than 0.3 micron, bonding force can be less than 0.2N, it is not easy to meet the requirement of film product.
The preparation method of above-mentioned BOPP two-sided heat-sealing film, comprising the following steps: each layer raw material is respectively by different extrusions
Machine melting, plasticizing squeeze confluence in same die head, form sheet through slab roller by die head outflow melt, sheet is using longitudinal direction
Stretching, cross directional stretch, traction processing, BOPP two-sided heat-sealing film is obtained by winding；If desired, being needed after traction processing
Sided corona treatment.
Drying device: continuous drier, temperature is generally at 70 DEG C, and drying time was at 6 hours or more.
Extruder device: extruder can may be double screw extruder for single screw extrusion machine, and extruder temperature is set
Setting range is 170 DEG C~290 DEG C, and temperature is too low, and resin plasticization is bad poor so as to cause film appearance effect or even melt is difficult to
It squeezes out；Temperature is too high, and resin is easy to decompose, to influence the stability that properties of product even produce.
Cooling slab device: cooling slab device can be slab roller and cooling trough collectively constitutes, can also be only cold
But slab roller, temperature setting range are 10 DEG C~50 DEG C.The melt come out from die head is mainly cooled to rapidly sheet, it is cooling
The temperature setting of slab device has a great impact to the quality of sheet, influences whether downstream the production even quality of film, can
To adjust temperature setting within this temperature range according to different situations.
Longitudinal tensile fixture: sheet enters regions of longitudinal stretch by guide roller, longitudinal tensile fixture generally comprise preheating,
Longitudinal stretching and thermal finalization three parts.Preheating is that sheet is allowed to soften, and reaches the requirement (100~150 DEG C of temperature range) of stretching；It is vertical
It is that sheet after preheating is realized through more than two draw rolls there are speed difference to stretching, stretching ratio is set as 3.5~
7.0, can be using one-off drawing or using twice or multi-drawing, drawing temperature range is 60~130 DEG C；Thermal finalization is
Increase film dimensions stability, temperature range is 90~155 DEG C.
Transversal stretching device: by above-mentioned longitudinal stretching sheet regions of lateral stretch by preheating, cross directional stretch and
Film is formed after thermal finalization, subsequently into downstream traction and winding region.Preheating is that sheet is allowed to soften, and reaches the requirement of stretching；
Cross directional stretch is the lateral physical mechanical property in order to improve film, and stretching ratio is set as 8~12, specific stretching ratio root
Depending on concrete condition；Thermal finalization is to increase film dimensions stability.
Corona treatment plant: corona treatment plant is a part in traction winding region, and sided corona treatment mainly improves thin
The wetting tension of film surface such as is conducive to be printed, is compound on the membrane surface at the Downstream processings, and the size of sided corona treatment value can
With depending on the demand of specific downstream client, some clients carry out sided corona treatment even without film.
It draws wrap-up: by the above-mentioned BOPP film processed after traction, receiving reel-to-reel according to the requirement of production
It takes in equipment.
Compared with prior art, the present invention having the advantages that
Firstly, the present invention use PETG be main material as outer layer, BOPP as sandwich layer, keep BOPP of the invention two-sided
Heat sealing film has a wear-resisting flower, preparation process difficulty low (horizontal when production, longitudinal membrane is good, can be stretched with 4 × 8 times) it is excellent
Point.
Further, the present invention replaces traditional transparent glue using polypropylene-base binding resin, has bonded outer layer PETG
Resin and sandwich layer BOPP film, preparation method is succinct, environmentally friendly: after can unifying extrusion, slab in die head into sheet, being led to
It crosses lateral, longitudinal membrane and obtains product, the BOPP two-sided heat-sealing film that high yield rate, outer layer and sandwich layer will not be slided, be removed.
Compared to using transparent glue to bond, although the peeling force of transparent glue is slightly better, because of transparent adhesive tape
Contain a large amount of toxic solvent in water, therefore, needs a large amount of air draft, air filter unit when preparing film, and with
The glue layer of the evaporation of solvent, film may leave bubble, it is often more important that, the production technology of glue adhesive film can only be
It first prepares and is coated with glue after thin film, is adhered by another layer film, therefore, preparation process is cumbersome, at high cost, rejection rate
Also high.Also, polypropylene-base binding resin is used, is bonded compared to adhesive-less layer with using transparent glue, improves wear-resisting flower
Performance.
Therefore, BOPP two-sided heat-sealing film of the invention has good competitiveness.
Detailed description of the invention
Fig. 1: BOPP two-sided heat-sealing membrane structure schematic diagram, label 1 is sandwich layer, label 2 is time surface layer, label 3 is outer
Layer.
Specific embodiment
The present invention further illustrates the present invention by following embodiment, but the present invention is not limited by the following examples.
The raw materials used in the present invention source is as follows:
PETG resin: U.S. Yi Siman chemical industry GP001；
Maleic anhydride inoculated polypropylene binding resin: Mitsui chemistry, ADMERTM, grafting rate 0.8%, 145 DEG C of fusing point；
Homopolypropylene: Maoming branch company, Sinopec, F300M；
Petropols: Exxon Mobil, PR100A；
Antistatic agent: Nanjing Nordson Corp, SACY06；Beijing Du Chen company, DS126；
Slipping agent: Su Xing masterbatch Co., Ltd SJ065, Shu Erman Plastics Company 2582SC；
Antitack agent:；Shu Erman Plastics Company ABPP05SC；
The preparation process of embodiment BOPP two-sided heat-sealing film is referring to specification part.
Properties test method:
(1) heat seal strength: referring to GBT1003-2008 detection, (heat seal strength indicates two films in certain time, temperature
Under pressure, have certain leakproofness after mutually fusing and cool down, be mainly used in sealed package field)；
(2) it peeling force: is detected referring to GB 8808-88；
(3) wear-resisting to take time: rub in the stipulated time, whether observed by scratching to 20 films, in this way then this when
Between be exactly wear-resisting to take time；
(4) it coefficient of friction: is detected referring to GB10006-88.
Table 1: embodiment BOPP two-sided heat-sealing film formulation (each layer weight percentage) and properties test result
Comparative example 1: film only haves three layers: outer layer (PETG95%, antistatic agent 2%, slipping agent 1%, anti-adhesive agent 2%)
With a thickness of 0.3 micron, sandwich layer (homopolypropylene 82%, Petropols 15%, slipping agent 1%, antistatic agent 2%) is with a thickness of 20
Micron, for preparation process in addition to the preparation on not secondary surface layer, remaining is identical as embodiment.Test result are as follows: heat seal strength 1.9N/
15mm, peeling force are less than 0.1N, wear-resisting < 20s that takes time, coefficient of friction 0.19.
Comparative example 2: film, which contains, to be of five storeys: outer layer (PETG95%, antistatic agent 2%, slipping agent 1%, anti-adhesive agent 2%)
With a thickness of 0.3 micron, sandwich layer (homopolypropylene 82%, Petropols 15%, slipping agent 1%, antistatic agent 2%) is with a thickness of 20
Micron, secondary surface layer are to be bonded using transparent glue, and transparent glue is acrylate solution, and preparation process is two-way in plane
It stretches and coats acrylate solution, then composite skins online on the sandwich layer of film forming.Test result are as follows: heat seal strength 2.0N/15mm,
Peeling force 1.1N, the wear-resisting 23s that takes time, coefficient of friction 0.18.
Comparative example 3: film, which contains, to have three layers: outer layer (copolymer polypropylene 95%, antistatic agent 2%, slipping agent 1%, anti-bonding
Agent 2%) with a thickness of 1.2 microns, sandwich layer (homopolypropylene 82%, Petropols 15%, slipping agent 1%, antistatic agent 2%) is thick
Degree is 18 microns, and preparation process is that three layers of melting are coextruded plane bidirectional extending method.Test result are as follows: heat seal strength 3.4N/
15mm, 135 DEG C, wear-resisting take time less than 20 seconds, coefficient of friction 0.19.
Comparative example 4: film, which contains, to have three layers: (copolymer polypropylene 95%, antistatic agent 2%, slipping agent 1%, glass are micro- for outer layer
Pearl anti-wear agent 2%) with a thickness of 1.2 microns, sandwich layer is (homopolypropylene 82%, Petropols 15%, slipping agent 1%, antistatic
Agent 2%) with a thickness of 18 microns, preparation process is that three layers of melting are coextruded plane bidirectional extending method.Test result are as follows: heat-sealing is strong
Spend 3.3N/15mm, 135 DEG C, wear-resisting take time 24 seconds, coefficient of friction 0.17.
The peeling force needs of BOPP bilayer heat-sealing film, which reach at least 0.2N, could have good use value.
As it can be seen from table 1 not only preparation process is succinct for BOPP bilayer heat-sealing film of the invention, but also properties of product are good
It is good, also, take time from comparative example 1 and the wear-resisting of comparative example 2 as can be seen that using polypropylene-base binding resin, compared to nothing
Adhesive layer is bonded with using transparent glue, improves wear-resisting colored performance.
Although from comparative example 2 as can be seen that secondary surface layer be it is transparent compared with water when its peeling force it is good, its production technology is more
Cumbersome, not environmentally, product competitiveness is insufficient.
If from comparative example 3 and comparative example 4 as can be seen that be PP material by surface layer, although with the bond effect of sandwich layer it is good,
Peeling force is very high, while " three layers melting be coextruded plane bidirectional extending method " production also can be used, but it is wear-resisting spend it is poor.
Claims (10)
1. a kind of BOPP two-sided heat-sealing film, which is characterized in that including sandwich layer (1) and outer layer (3), set between sandwich layer and outer layer
It is equipped with time surface layer (2)；Wherein, the material on secondary surface layer is polypropylene-base binding resin, and the material of sandwich layer is polypropene composition, outside
The material of layer is PETG resin combination.
2. BOPP two-sided heat-sealing film according to claim 1, which is characterized in that the polypropene composition, by weight
Part meter is measured, including 70-100 parts of homopolypropylene, 0-20 parts of Petropols, 0-5 parts of antistatic agents, 0-5 parts of slipping agents.
3. BOPP two-sided heat-sealing film according to claim 2, which is characterized in that the antistatic agent is anti-selected from amine
At least one of electrostatic agent, esters antistatic agent；It is refreshing that the slipping agent is selected from erucyl amide class slipping agent, oleamide class
At least one of lubrication prescription；The Petropols are selected from nine hydrogenated petroleum resin of light dydrocarbon or carbon.
4. BOPP two-sided heat-sealing film according to claim 1, which is characterized in that the polypropylene-base binding resin choosing
From maleic anhydride inoculated polypropylene binding resin, grafting rate 0.1-2%.
5. BOPP two-sided heat-sealing film according to claim 4, which is characterized in that the maleic anhydride inoculated polypropylene
The melt index of binding resin is 4~8g/10min, GB/T 3682.1-2018.
6. BOPP two-sided heat-sealing film according to claim 4, which is characterized in that the maleic anhydride inoculated polypropylene
Binding resin can be pure maleic anhydride inoculated polypropylene, be also possible to maleic anhydride inoculated polypropylene composition, in composition
It may include other auxiliary agents etc., such as slipping agent, antioxidant, UV resistant agent.
7. BOPP two-sided heat-sealing film according to claim 1, which is characterized in that the PETG resin combination is by weight
Measure part meter, including 94-100 parts of PETG resins, 0-2 parts of antistatic agents, 0-2 parts of caking inhibiters, 0-2 parts of slipping agents.
8. BOPP two-sided heat-sealing film according to claim 7, which is characterized in that the PETG resin properties viscosity
0.65-0.85dl/g；The antistatic agent is selected from least one of amine-based antistatic agent, esters antistatic agent；Described
Slipping agent is selected from least one of silicone slipping agent, erucyl amide class slipping agent；The caking inhibiter is selected from titanium dioxide
At least one of silicon, clay, diatomite, glass microballoon.
9. BOPP two-sided heat-sealing film according to claim 1, which is characterized in that the core layer thickness is 0.1-68.8
Micron, secondary skin depth are 0.3-3 microns, outer layer thickness is 0.3-3 microns.
10. the preparation method of the described in any item BOPP two-sided heat-sealing films of claim 1-8, which is characterized in that including following
Step: each layer raw material is respectively by the melting of different extruders, plasticizing, extruding confluence in same die head, by die head outflow melt through casting
Piece roller forms sheet, and sheet is handled using longitudinal stretching, cross directional stretch, traction, and BOPP two-sided heat-sealing is obtained by winding
Film；If desired, needing sided corona treatment after traction processing.
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| CN114474932A (en) * | 2022-02-07 | 2022-05-13 | 山东优尼科斯科技股份有限公司 | Method and device for preparing polyolefin bottom-back spliced carpet |
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Inventor after: Xue Peng Inventor after: He Qingdong Inventor before: Xue Peng |