CN105437694A - Heat shrinkable E-PET composite membrane and manufacturing method thereof - Google Patents
Heat shrinkable E-PET composite membrane and manufacturing method thereof Download PDFInfo
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- CN105437694A CN105437694A CN201610027638.3A CN201610027638A CN105437694A CN 105437694 A CN105437694 A CN 105437694A CN 201610027638 A CN201610027638 A CN 201610027638A CN 105437694 A CN105437694 A CN 105437694A
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- 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
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- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- 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
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- 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
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- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- 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
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
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- 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
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
- B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
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- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
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- 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
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
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- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B32B2038/0028—Stretching, elongating
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
- B32B2307/736—Shrinkable
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/75—Printability
Abstract
The invention relates to a heat shrinkable E-PET composite membrane. The heat shrinkable E-PET composite membrane comprises an outer surface layer, a bonding layer and a printing layer, wherein the bonding layer is positioned between the outer surface layer and the printing layer, the outer surface layer is made of a mixture of LLDPE (Linear Low Density Polyethylene) resin and an antiblocking agent, the printing layer is made of a mixture of PETG (Polyethylene Terephthalate Glycol) resin and an antiblocking agent, and the bonding layer is made of styrene block copolymer (SBC) resin. According to a preparation method, the three materials respectively pass through three extrusion and filtration systems, and the three materials respectively correspond to the three extrusion systems; three melts are gathered to a T-shaped die head to extrude a casting piece, and the die head is in a T shape for A, B and C flow channels; two-way stretching, shaping, traction and rolling processes are performed on the casting piece which is extruded and combined by the three materials, so as to prepare the heat shrinkable E-PET composite membrane. The membrane has the advantage of wide shrinkage range and is mainly used for manufacturing a heat shrinkable casing label, and an inner printing mode is adopted for the printing layer which is used as a color pattern bearing layer. The thickness of the shrinkable membrane can be adjusted as required in application, and the shrinkage rate can be adjusted within a shrinkage upper limit as required in application. The heat shrinkable E-PET composite membrane has the advantages of excellent shrinkage and printing performance, simple manufacturing process and strong overall performance.
Description
Technical field
The present invention relates to packaging material field, particularly relate to a kind of heat-shrinkable E-PET composite membrane and manufacture method thereof.
Background technology
Heat shrinkage label belongs to sleeve label, when being a kind of film label labeling adopting ink special to be printed on heat shrinkable plastic film or plastic tube in a heated condition, shrink label just can shrink by the very fast outline along container, be close to vessel surface, build the effect of " from top to bottom " comprehensive packaging bottle.The heat shrink films being applied to packaging field at present mainly contains polyvinyl chloride (PVC) heat shrink films, polyethylene (PE) heat shrink films, polystyrene (PS), PETG heat shrink films, multi-layer co-extruded Polyolefin Heat Shrinkable Film (POF) etc.PVC heat shrink films printing performance is good, transparency is high, glossiness good, but shrinkage factor generally can not more than 60%, at some special-shape bottles or to require high shrinkage (shrinkage factor more than 60%) application to apply limited, and PVC film contains and has plasticiser and can not recycle; PE and POF heat shrink films pliability is good, and impact resistance, tear resistance are strong, not cracky, be not afraid of tide, contraction scope wide (shrinkage factor is the highest is adjusted to 80%), but printing performance is bad; PS film and PETG film light transmittance and glossiness is good, mechanical strength is large, printing performance good but the large hardness of rigidity is high to shrink scope wide (shrinkage factor is the highest is adjusted to 85%), the label feel made is poor.E-PET heat-shrinkable composite membrane of the present invention, utilize PETG film to shrink scope is wide, printing is good, mechanical strength is high feature using PETG material as printed layers, simultaneously in conjunction with the advantage that the good shrinkage factor of PE heat shrink films pliability is high, using PE material as extexine, binding material is utilized to be made by biaxial tension after curtain coating compound.It is wide that this film has contraction scope, and pliability is good, the feature of soft handle.After curtain coating compound, biaxial tension ensure that the shrinkage factor that PE layer is well consistent with PETG layer, and after solving the contraction caused because bi-material contraction is inconsistent, face is wrinkling, the problems such as rete separation.
Summary of the invention
For the deficiency that existing heat shrink films exists, the object of the invention is to provide a kind of environmental protection, printing is good, contraction scope is wide, pliability good, soft handle, tearing toughness large, shrink uniform heat shrink films and manufacture method thereof.The pattern that the heat shrinkage label that this kind of shrink film is made can be beautifully printed, have thermal contraction scope widely (shrinkage factor is maximum reaches 80%), pliability tear resistance is good, and feel is splendid, promotes the appearance of packed article.According to applicable cases, the thickness of above-mentioned shrink film is adjustable, can be adjustable according to applicable cases shrinkage factor within the contraction upper limit.
To achieve these goals, the present invention realizes by the following technical solutions:
1, heat-shrinkable E-PET composite membrane and a manufacture method thereof, comprise the steps: in technical scheme
(1) structure is formed: composite membrane is composited by extexine, tack coat and printed layers are three-layer co-extruded
(2) raw material composition: the raw material of extexine is the mixture of LLDPE resin and opening agent, opening agent is for containing 10-30% concentration SiO
2anti-stick connect masterbatch, addition is the 1%-3% of extexine gross weight; Printed layers is the mixture of copolyester PETG resin and opening agent, and opening agent is for containing 10-30% concentration SiO
2anti-stick connect masterbatch, addition is the 1%-3% of printed layers gross weight; Tack coat is SBC (SBC) resin.
(3) production procedure: the raw material of each layer is fed in raw material through corresponding and extrude fusing system and melt delivery system, each layer melt is sent into ABC tri-runner die head respectively.A, B, C tri-runners corresponding extexine, tack coat and printed layers respectively.Above-mentioned three kinds of molten polymers, after die head place converges and extrudes, by extrudate docile at sharp cooling roll, cool slab fast; Then slab is entered after preheating stretching-machine and carry out vertical cross directional stretch, according to shrinkage factor and thickness adjustment draw ratio, be drawn into film.Last film, through sizing, cooling, rolling, makes heat-shrinkable E-PET composite membrane.
2, a heat-shrinkable E-PET composite membrane, in technical scheme, extexine is LLDPE (LLDPE).
3, a heat-shrinkable E-PET composite membrane, a kind of copolymer that extexine LLDPE used (LLDPE) resin is ethene and is selected from 1-butylene or 1-hexene or 1-octene three kinds of monomers.Wherein comonomer accounts for the 5%-10% weight fraction of ethene and comonomer total amount.Preferably with 1-butylene for comonomer, comonomer accounts for 8% weight fraction of ethene and 1-butene monomers total amount.
4, a heat-shrinkable E-PET composite membrane, tack coat SBC used (SBC) resin in technical scheme, preferred butadiene styrene block copolymerization thing (SBS) resin.When tack coat selects SBS resin, the SBS of preferred linear structure, mean molecule quantity 8-12 ten thousand, S/B (mass ratio) is 30/70.
5, a heat-shrinkable E-PET composite membrane, printed layers copolyester used (PETG) resin in technical scheme, inherent viscosity index is all at more than 0.7dL/g.
6, a heat-shrinkable E-PET composite membrane, this composite membrane general thickness is 40-80 μm.It is characterized in that in layers of material, outer skin thickness accounts for the 30%-40% of general thickness; Adhesive layer thickness accounts for the 10%-15% of general thickness; Printed layers thickness accounts for the 45%-60% of general thickness.
7, its manufacture method of heat-shrinkable E-PET composite membrane, is prepared as follows:
Step one: the material LLDPE of extexine and opening agent are controlled blanking ratio by measurement charging device, opening agent addition is the 1%-3% of extexine gross weight, after blender makes material tentatively mix, enter twin screw vented extruders plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter and static mixer;
Step 2: by bonding layer material SBC (SBC) resin, preferred butadiene styrene block copolymerization thing (SBS) resin controls blanking ratio by measurement charging device, after blender makes material tentatively mix, enter twin screw vented extruders plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter and static mixer;
Step 3: printed layers material PET G resin and opening agent are controlled blanking ratio by measurement charging device, opening agent addition is the 1%-3% of printed layers gross weight, after blender makes material tentatively mix, enter twin screw vented extruders plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter and static mixer;
Step 4: the high-temperature fusant that step one, step 2 and step 3 are formed, after the T-shaped die head of ABC tri-runner is extruded, by extrudate docile on sharp cooling roll, is cooled to slab fast.
Step 5: by slab preheating in vertical transverse stretching equipment, through vertical cross directional stretch, sizing, cooling, thickness measurement online, rolling.
8, heat-shrinkable E-PET composite membrane and a manufacture method thereof, in extrusion process, the processing temperature of extexine extruder is 60-230 DEG C, die head temperature 220-230 DEG C; The processing temperature of printed layers extruder is 220-280 DEG C, die head temperature 260-270 DEG C; Tack coat extruder processing temperature 80-235 DEG C, die head temperature 220-230 DEG C.During slab, sharp cooling roll temperature controls at 30-40 DEG C.
9, heat-shrinkable E-PET composite membrane and a manufacture method thereof, longitudinal stretching preheating zone temperature 70-80 DEG C, longitudinal drawing temperature 80-85 DEG C, longitudinal stretching multiple 1-3 is doubly; Cross directional stretch preheating zone temperature 95-105 DEG C, transverse drawing temperature 80-90 DEG C, cross directional stretch multiple 1-4.5 doubly.
Beneficial effect of the present invention:
1, PE heat shrink films pliability is good, and impact resistance, tear resistance are strong, not cracky, be not afraid of tide, contraction scope wide (shrinkage factor is the highest is adjusted to 80%), but printing performance is bad; PETG film light transmittance and glossiness is good, mechanical strength is large, printing performance is excellent but the large hardness of Film stiffness is high to shrink scope wide (shrinkage factor is the highest is adjusted to 85%), the label feel made is poor.The invention provides a kind of heat-shrinkable E-PET composite membrane, extexine is PE film, and printed layers is PETG film.Intermediate layer is tack coat, PE layer and PETG layer is bonded together and forms entirety.This kind of thermal contraction had both had the pliability of PE film, and puncture resistant ability is strong, and the advantage of soft handle, has again the PETG film high grade of transparency, high gloss, excellent printing performance advantage.
2, PE heat shrink films is in the market blow molding mostly, and this technique is comparatively large to the thickness deviation of film, and thickness evenness is difficult to control.Heat-shrinkable E-PET composite membrane of the present invention, adopts and extrudes curtain coating stretch processes, can ensure the thickness evenness of PETG rete and PE rete simultaneously, achieve the accurate control of heat-shrinkable PETG composite film thickness.
3, film manufacturing process of the present invention, adopts synchro-draw again after PE rete and PETG rete curtain coating compound, ensure that uniformity and the uniformity of heat-shrinkable E-PET composite membrane shrinkage factor.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:
Fig. 1 is heat-shrinkable E-PET composite membrane film layer structure figure of the present invention;
Fig. 2 is the production technological process of heat-shrinkable E-PET composite membrane of the present invention.
Detailed description of the invention:
Case study on implementation given below is to concrete detailed description of the present invention; herein means out following implementation method is be further explained in detail of the present invention simultaneously; unintelligible is limiting the scope of the invention; if the improvement that the technical staff be familiar with in this field only makes on non-intrinsically safe according to content of the present invention, still protection scope of the present invention will be belonged to.Be specifically described below in conjunction with film layer structure Fig. 1 and flow chart 2:
1, as shown in Figure 1, described heat-shrinkable E-PET composite membrane is A/B/C structure, and wherein A layer is extexine, and extexine comprises LLDPE resin and opening agent, and opening agent is for containing 30% concentration SiO
2anti-stick connect masterbatch, addition is 2% of extexine gross weight; B layer is tack coat, and for A layer and the C layer of boning, tack coat is SBC resin; C layer is printed layers, and printed layers comprises PETG resin and opening agent, and opening agent is for containing 30% concentration SiO
2anti-stick connect masterbatch, addition is 1.5% of printed layers gross weight.
2, this composite membrane general thickness is 40 μm.In layers of material, outer skin thickness is 15 μm; Adhesive layer thickness is 5 μm; Printed layers thickness is 20 μm.
3, extexine LLDPE used (LLDPE) resin is ethene and 1-butylene is comonomer, co-monomer content 8% weight fraction; Tack coat SBC used (SBC) resin is butadiene styrene block copolymerization thing (SBS) resin.This kind of SBS resin is linear structure, and mean molecule quantity 8-12 ten thousand, S/B (mass ratio) is 30/70; Printed layers copolyester used (PETG) resin, inherent viscosity index is all at more than 0.7dL/g.
4, heat-shrinkable E-PET composite membrane of the present invention and manufacture method thereof, is prepared as follows:
Step one: the material LLDPE of extexine and opening agent are controlled blanking ratio by measurement charging device, addition is 2% of extexine gross weight, after blender makes material tentatively mix, enter twin screw vented extruders and extexine extruder 1 plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter (fine filter) and static mixer;
Step 2: by bonding layer material SBC (SBC) resin, preferred butadiene styrene block copolymerization thing (SBS) resin controls blanking ratio by measurement charging device, after blender makes material tentatively mix, enter twin screw vented extruders and tack coat extruder 2 plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter (fine filter) and static mixer;
Step 3: printed layers material PET G resin and opening agent are controlled blanking ratio by measurement charging device, addition is 1.5% of printed layers gross weight, after blender makes material tentatively mix, enter twin screw vented extruders and printed layers extruder 3 plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter (fine filter) and static mixer;
Step 4: the high-temperature fusant that step one, step 2 and step 3 are formed, after the T-shaped die head 4 of ABC tri-runner is extruded, by extrudate docile on sharp cooling roll, is cooled to slab fast;
Step 5: by slab preheating in vertical transverse stretching equipment, through vertical cross directional stretch, sizing, cooling, thickness measurement online, rolling.
5, heat-shrinkable E-PET composite membrane manufacture method of the present invention, extexine in extrusion process
The processing temperature that extruder is four sections is 160,200,230,220 DEG C, die head temperature 220-230 DEG C; The processing temperature that printed layers extruder is four sections is 220,270,280,270 DEG C; Die head temperature 260-270 DEG C; The processing temperature that tack coat extruder is four sections is 120,220,235,230 DEG C, die head temperature 220-230 DEG C.During slab, sharp cooling roll temperature controls at 30-40 DEG C.
6, longitudinal stretching preheating zone temperature 70-80 DEG C, longitudinal drawing temperature 80-85 DEG C; Cross directional stretch preheating zone temperature 95-105 DEG C, transverse drawing temperature 80-90 DEG C.Drawing zone longitudinal stretching multiple 1.15 times, cross directional stretch multiple 4 times.
Claims (10)
1. a heat-shrinkable E-PET composite membrane, is characterized by: this heat-shrinkable E-PET composite membrane is A-B-C structure, and wherein A layer is extexine, and extexine comprises LLDPE resin and opening agent, and opening agent is 10-30% concentration SiO
2anti-stick connect masterbatch, addition is the 1%-3% of extexine gross weight; B layer is tack coat, and for A layer and the C layer of boning, tack coat is SBC resin; C layer is printed layers, and printed layers comprises PETG resin and opening agent, and opening agent is 10-30% concentration SiO
2anti-stick connect masterbatch, addition is the 1%-3% of printed layers gross weight.
2. a kind of heat-shrinkable E-PET composite membrane according to claim 1, it is characterized in that, this composite membrane general thickness is 40-80 μm.
3. a kind of heat-shrinkable E-PET composite membrane according to claim 2, it is characterized in that, in layers of material, outer skin thickness accounts for the 30%-40% of composite membrane general thickness; Adhesive layer thickness accounts for the 10%-15% of composite membrane general thickness; Printed layers thickness accounts for the 45%-60% of composite membrane general thickness.
4. a kind of heat-shrinkable E-PET composite membrane according to claim 1, it is characterized in that, a kind of copolymer that extexine LLDPE used (LLDPE) resin is ethene and is selected from 1-butylene or 1-hexene or 1-octene three kinds of monomers, wherein comonomer accounts for the 5%-10% weight fraction of ethene and comonomer total amount; And/or,
Tack coat SBC used (SBC) resin is butadiene styrene block copolymerization thing (SBS) resin; And/or this butadiene styrene block copolymerization thing (SBS) resin is the SBS of linear structure, and mean molecule quantity 8-12 ten thousand, S/B (mass ratio) is 30/70; And/or,
Printed layers copolyester used (PETG) resin, inherent viscosity index is all at more than 0.7dL/g.
5. a kind of heat-shrinkable E-PET composite membrane according to claim 4, is characterized in that, with 1-butylene for comonomer, comonomer accounts for 8% weight fraction of ethene and 1-butene monomers total amount.
6. the method for a kind of heat-shrinkable E-PET composite membrane of preparation as described in any one of claim 1-5, it is characterized by, preparation process is as follows:
Step one: the material LLDPE of extexine and opening agent are controlled blanking ratio by measurement charging device, opening agent addition is the 1%-3% of extexine gross weight, after blender makes material tentatively mix, enter twin screw vented extruders plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter and static mixer;
Step 2: by bonding layer material SBC (SBC) resin, blanking ratio is controlled by measurement charging device, after blender makes material tentatively mix, enter twin screw vented extruders plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter and static mixer;
Step 3: printed layers material PET G resin and opening agent are controlled blanking ratio by measurement charging device, opening agent addition is the 1%-3% of printed layers gross weight, after blender makes material tentatively mix, enter twin screw vented extruders plastifying fusion, enter die head by coarse filter, measuring pump, quiet filter and static mixer;
Step 4: the high-temperature fusant that step one, step 2 and step 3 are formed, after the T-shaped die head of ABC tri-runner is extruded, by extrudate docile on sharp cooling roll, is cooled to slab fast;
Step 5: by slab preheating in vertical transverse stretching equipment, through vertical cross directional stretch, sizing, cooling, thickness measurement online, rolling.
7. the preparation method of a kind of heat-shrinkable E-PET composite membrane according to claim 6, it is characterized by: the melt of extexine, tack coat, printed layers three kinds of materials is respectively from three cover extrusion systems, and corresponding extruder is respectively extexine extruder, tack coat extruder and printed layers extruder.
8. the preparation method of a kind of heat-shrinkable E-PET composite membrane according to claim 6, it is characterized by: above-mentioned three kinds of high-temperature fusants converge to die head and realize three-layer co-extruded, this die head is the T-shaped die head of ABC tri-runner, and ABC tri-runner is the extexine of corresponding E-PET composite membrane, tack coat and printed layers respectively.
9. the preparation method of a kind of heat-shrinkable E-PET composite membrane according to claim 6, is characterized by: in extrusion process, the processing temperature of extexine extruder is 60-230 DEG C, die head temperature 220-230 DEG C; The processing temperature of printed layers extruder is 220-280 DEG C, die head temperature 260-270 DEG C; Tack coat extruder processing temperature 80-235 DEG C, die head temperature 220-230 DEG C; During slab, sharp cooling roll temperature controls at 30-40 DEG C.
10. the preparation method of a kind of heat-shrinkable E-PET composite membrane according to claim 6, is characterized by: longitudinal stretching preheating zone temperature 70-80 DEG C, longitudinal drawing temperature 80-85 DEG C, longitudinally stretches multiple 1-3 doubly; Cross directional stretch preheating zone temperature 95-105 DEG C, transverse drawing temperature 80-90 DEG C, cross directional stretch multiple 1-4.5 doubly.
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| CN201610027638.3A CN105437694B (en) | 2016-01-15 | 2016-01-15 | A kind of heat-shrinkable E-PET composite membranes and its manufacturing method |
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| CN201610027638.3A CN105437694B (en) | 2016-01-15 | 2016-01-15 | A kind of heat-shrinkable E-PET composite membranes and its manufacturing method |
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| CN105437694B CN105437694B (en) | 2018-09-11 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107610585A (en) * | 2017-09-18 | 2018-01-19 | 江苏景宏新材料科技有限公司 | A kind of preparation for washing transparent thermal contraction type beer bottle label and its wash mark technique |
| CN107610585B (en) * | 2017-09-18 | 2021-04-20 | 江苏景宏新材料科技有限公司 | Preparation of washable transparent heat-shrinkable beer bottle label and label washing process thereof |
| CN110303691A (en) * | 2018-03-27 | 2019-10-08 | 扬州市帝邦塑胶科技有限公司 | A kind of fast processing method of RPET sheet material |
| CN110696458A (en) * | 2019-03-08 | 2020-01-17 | 河南银金达新材料股份有限公司 | Isolating membrane for self-adhesive waterproof roll and preparation method thereof |
| CN110696454A (en) * | 2019-03-08 | 2020-01-17 | 河南银金达新材料股份有限公司 | High-elongation polyester modified alloy film for waterproof coiled material and preparation method thereof |
| CN113211921A (en) * | 2020-03-26 | 2021-08-06 | 河南银金达新材料股份有限公司 | Heat-shrinkable PETG (polyethylene terephthalate glycol) black-and-white composite film with light shielding property |
| CN111452469A (en) * | 2020-03-26 | 2020-07-28 | 河南银金达新材料股份有限公司 | Heat-shrinkable PETG (polyethylene terephthalate glycol) black-and-white composite film with light shielding property |
| CN111976252A (en) * | 2020-08-28 | 2020-11-24 | 河南银金达新材料股份有限公司 | Flexible thermal shrinkage composite film formed by tape casting and preparation method thereof |
| CN114889266A (en) * | 2022-04-27 | 2022-08-12 | 河南银金达彩印股份有限公司 | PETG curtain coating membrane |
| CN114889266B (en) * | 2022-04-27 | 2023-11-07 | 河南银金达彩印股份有限公司 | PETG curtain coating membrane |
| CN117162624A (en) * | 2023-11-02 | 2023-12-05 | 河南达新源新材料有限公司 | Strong-oxygen curing type high-peeling-force PETG/PE/PET multilayer film and preparation method thereof |
| CN117261397A (en) * | 2023-11-21 | 2023-12-22 | 河南银金达新材料股份有限公司 | Shrinkage force controllable composite heat shrinkage film, production process and shrinkage force control method |
| CN117261397B (en) * | 2023-11-21 | 2024-03-01 | 河南银金达新材料股份有限公司 | Shrinkage force controllable composite heat shrinkage film, production process and shrinkage force control method |
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