CN106113830B - One kind is exempted to apply silicon release film and preparation method thereof - Google Patents
One kind is exempted to apply silicon release film and preparation method thereof Download PDFInfo
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- CN106113830B CN106113830B CN201610506646.6A CN201610506646A CN106113830B CN 106113830 B CN106113830 B CN 106113830B CN 201610506646 A CN201610506646 A CN 201610506646A CN 106113830 B CN106113830 B CN 106113830B
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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
-
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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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
-
- 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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- 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
-
- 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B32B2038/0028—Stretching, elongating
-
- 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
- B32B2307/72—Density
-
- 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
- B32B2323/00—Polyalkenes
- B32B2323/10—Polypropylene
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention belongs to technical field of polymer materials, and in particular to one kind is exempted to apply silicon release film and preparation method thereof.The release film has the three-decker of the first functional layer, intermediate layer and bottom or the first functional layer, intermediate layer and the second functional layer, using homopolypropylene and calcium carbonate masterbatch as primary raw material, the three-layer type release film provided, structure is compacted easily peelable, off-type force is small on the basis of ensureing not influencing glue surface characteristic, effect is more preferable, solves the problems, such as that the release transfer of conventional light release film is generally higher；And eliminate and apply silicon process, cost-effective, process is not related to poisonous, volatile solvent etc., environmentally safe, reduces the harm to operating personnel.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to one kind is exempted to apply silicon release film and preparation method thereof.
Background technology
Release film is also known as stripping film, isolation film, seperation film, adhesive block film, fractal film, film, plastic film, masking hole film, silicon
Oil film, silicone oil paper, antiadhesion barrier, type paper, skidding film, that paper of day, release liners etc., refer to that film surface can have the film of differentiation, from
Type film does not have viscosity, or slight viscosity after being contacted under limited conditions with specific material.Due to release film have every
From, fill, protect, be easily peeled off the advantages that, release film has been widely used in packing, has printed, flexible circuitry, insulation system
The industry fields such as product, wiring board, fitting, electronics, sealing material use film, adhesive article, cross cutting stamp processing.
Current release film is usually by plain paper（Wood pulp paper）Drench PE（Polyethylene）Organic silicone oil is applied afterwards to be made, organosilicon
Coating method is usually solvent-borne type, and solvent volatilization is there are environmental pollution, toxicity are big, and this conventional processes is cumbersome, cost
It is high.In addition traditional papermaking also belongs to high pollution industry, does not meet the environmental protection concept of modern people.With the development of the social economy, people
Environmental consciousness enhancing, in response to country environmentally protective call, it is necessary to develop one kind exempt from apply silicon release film and
Its its preparation method.
Release film mainly has a polyester, polyethylene, polypropylene three major types, and polypropylene is non-polar material, product surface itself
Can be relatively low, it is not easy to produce firm adhesion with other gelatin substances, but be still not enough to be used in release liners field.In order to which product is straight
Scoop out and be used for release field it is necessary to further reduce its surface tension.
The content of the invention
The present invention is a kind of based on homopolypropylene synthetic paper in order to overcome the deficiencies of the prior art and provide, there is provided
A kind of simple process and low cost is honest and clean, solvent-free volatilization, asepsis environment-protecting exempt from apply silicon release film and preparation method thereof.
To achieve the above object, the technical solution adopted in the present invention is：
One kind exempts to apply silicon release film, three-decker with the first functional layer, intermediate layer and bottom or with the first work(
The three-decker of ergosphere, intermediate layer and the second functional layer, wherein, the first functional layer and the second functional layer include following parts by weight
Component, 75-90 parts of homopolypropylene, 5-10 parts of silicone masterbatch and 5-15 parts of calcium carbonate masterbatch, intermediate layer are sandwich layer, including with
10-30 parts of the component of lower parts by weight, 70-90 parts of homopolypropylene and calcium carbonate masterbatch, bottom includes the component of following parts by weight,
2-10 parts of 90-98 parts of homopolypropylene and antibock Masterbatch.Wherein, the thickness and composition of the number of functional layer, two functional layers
Adjustment can be made choice according to practical application request.
Preferably, the first functional layer and the second functional layer include the component of following parts by weight, 86 parts of homopolypropylene, silicon
6 parts and 8 parts calcium carbonate masterbatch of ketone masterbatch, intermediate layer include the component of following parts by weight, and 85 parts of homopolypropylene and calcium carbonate are female
15 parts of material, bottom include 4 parts of the component of following parts by weight, 96 parts of homopolypropylene and antibock Masterbatch.Preferably, the first function
Layer and the second function layer thickness are 5-10 μm, and intermediate layer thickness is 30-60 μm, and underlayer thickness is 2-5 μm.
A kind of above-mentioned preparation method for exempting to apply silicon release film, it is characterised in that comprise the following steps：
（1）Each component is weighed in proportion, homopolypropylene, calcium carbonate masterbatch are heated to melting in main extruder, obtained
Sandwich layer melt；Homopolypropylene, silicone masterbatch, calcium carbonate masterbatch are melted in subsidiary extruder, obtain the first functional layer respectively
Melt and the second functional layer melt；When the release film includes bottom, homopolypropylene and antiblocking agent are extruded in auxiliary
Melted in machine, obtain bottom melt；Three kinds of melts are filtered respectively, and converges in extruder die head and is extruded through die head；
（2）Quench in a water bath is attached on sharp cooling roll by high pressure air knife from the melt of die head extrusion and forms slab；
（3）Slab carries out longitudinal stretching after pressure roller and compressed air water removal；
（4）Carry out cross directional stretch again after longitudinal stretching；
（5）Film after stretching horizontally enter after room temperature is air-cooled traction flattening system carry out thickness measuring feedback, winding, when
Cut, packed after effect.
Preferably, step（1）Middle extruder die head temperature is 240-250 DEG C.
Preferably, step（2）Middle 30-35 DEG C of Quench roll temperature, bath temperature are 30-35 DEG C.
Preferably, step（3）Middle longitudinal stretching concretely comprises the following steps, and slab is first preheated at a temperature of 120-140 DEG C,
The longitudinal stretching at 120-135 DEG C, stretching ratio is in 4.0-5.5.
Preferably, step（4）In it is stretching in the transverse direction concretely comprise the following steps, before slab cross directional stretch at a temperature of 165-170 DEG C
Preheated, stretched at a temperature of 155-160 DEG C, 162-168 DEG C of thermal finalization, stretching ratio is 7.0-8.0.
Raw material used in the present invention：Silicone masterbatch, for one kind using polypropylene as carrier, silicone macromolecule is effective ingredient
Blend composition.Primarily serving reduces the effect of product surface adhesion.Calcium carbonate masterbatch, is also pearly-lustre masterbatch, it is a kind of using polypropylene as
Carrier, calcium carbonate are the mixture of effective ingredient.Reduction product density is primarily served after adding this product and then production is greatly reduced
The effect of product cost.Anti-adhesion master batch, using polypropylene as carrier, silica or crosslinked polymethylmethacrylaparticles are effective ingredient
Mixture.Silica or cross linked polyacrylate methyl esters form protrusion in product subsurface, so that playing prevents product adhesion
Effect.Three kinds of raw materials are commercial goods.
The present invention has the advantages and positive effects of：
（1）Three-layer type release film provided by the present invention, structure are compacted easily peelable, are ensureing not influencing the base of glue surface characteristic
Off-type force is small on plinth, and effect is more preferable, solves the problems, such as that the release transfer of conventional light release film is generally higher；
（2）Silicon cave used in the present invention has extremely low surface tension, is made into functional master batch blending and adds this product
After functional layer, the surface tension of product further reduces, and can reach the effect that can depart from very well with adhesive sticker, products obtained therefrom energy
Enough directly apply to release field；
（3）Primary raw material is homopolypropylene and calcium carbonate masterbatch, without using wood pulp paper, is conducive to environmental protection；Carbon
Sour calcium masterbatch, which can also play, to be reduced product density, product cost is greatly reduced；
（4）Eliminate and apply silicon process, cost-effective, process is not related to poisonous, volatile solvent etc., to environment without dirt
Dye, reduces the harm to operating personnel.
Embodiment
The present invention is specifically described and illustrated below by embodiment：
Embodiment 1
Each component is weighed in proportion, the first functional layer uses 75 parts of homopolypropylene, 5 parts of silicone masterbatch and 5 parts of carbonic acid
Calcium masterbatch, sandwich layer is using 70 parts of homopolypropylene, 10 parts of calcium carbonate masterbatch, and bottom is using 90 parts of polypropylene, 2 parts of anti-adhesion master batchs.
Produced using following production and processing step：
（1）Homopolypropylene, calcium carbonate masterbatch are heated to melting in main extruder, obtain sandwich layer melt；By homopolymerization poly- third
Alkene, silicone masterbatch, calcium carbonate masterbatch melt in subsidiary extruder, obtain release functional layer melt；By homopolypropylene with it is anti-stick
Even agent melts in subsidiary extruder, obtains bottom melt；Three kinds of melts are filtered respectively, and are converged in die head through die head
Extrusion, extruder die head temperature are 240 DEG C；
（2）Attach to by high pressure air knife on 30 DEG C of sharp cooling rolls in 30 DEG C of water-baths that Quench is formed from the melt of die head extrusion
Slab；
（3）Slab enters longitudinal stretching after pressure roller and compressed air water removal, and slab is preheated by 120 DEG C, and
Longitudinal stretching at 120 DEG C, stretching ratio is 4.0；
（4）Carry out cross directional stretch again after longitudinal stretching, preheated before cross directional stretch with 165 DEG C, at 155 DEG C into
Row stretching, 162 DEG C of thermal finalizations, stretching ratio 7.0；
（5）Film after stretching horizontally enter after room temperature is air-cooled traction flattening system carry out thickness measuring feedback, winding, when
Cut, pack after effect.
Embodiment 2
Each component is weighed in proportion, the first functional layer uses 90 parts of homopolypropylene, 10 parts of silicone masterbatch and 15 parts of carbon
Sour calcium masterbatch, sandwich layer is using 90 parts of homopolypropylene, 30 parts of calcium carbonate masterbatch, and bottom is using 98 parts of polypropylene, 10 parts of anti-sticking mothers
Material.Produced using following production and processing step：
（1）Homopolypropylene, calcium carbonate masterbatch are heated to melting in main extruder, obtain sandwich layer melt；By homopolymerization poly- third
Alkene, silicone masterbatch, calcium carbonate masterbatch melt in subsidiary extruder, obtain release functional layer melt；By homopolypropylene with it is anti-stick
Even agent melts in subsidiary extruder, obtains bottom melt；Three kinds of melts are filtered respectively, and are converged in die head through die head
Extrusion, extruder die head temperature are 250 DEG C；
（2）Attach to by high pressure air knife on 35 DEG C of sharp cooling rolls in 35 DEG C of water-baths that Quench is formed from the melt of die head extrusion
Slab；
（3）Slab enters longitudinal stretching after pressure roller and compressed air water removal, and slab is preheated by 140 DEG C, and
Longitudinal stretching at 135 DEG C, stretching ratio is 5.5；
（4）Carry out cross directional stretch again after longitudinal stretching, preheated before cross directional stretch with 170 DEG C, at 160 DEG C into
Row stretching, 168 DEG C of thermal finalizations, stretching ratio 8.0；
（5）Film after stretching horizontally enter after room temperature is air-cooled traction flattening system carry out thickness measuring feedback, winding, when
Cut, pack after effect.
Embodiment 3
Each component is weighed in proportion, the first functional layer uses 86 parts of homopolypropylene, 6 parts of silicone masterbatch and 8 parts of carbonic acid
Calcium masterbatch, sandwich layer is using 85 parts of homopolypropylene, 15 parts of calcium carbonate masterbatch, and bottom is using 96 parts of polypropylene, 4 parts of anti-adhesion master batchs.
Produced using following production and processing step：
（1）Homopolypropylene, calcium carbonate masterbatch are heated to melting in main extruder, obtain sandwich layer melt；By homopolymerization poly- third
Alkene, silicone masterbatch, calcium carbonate masterbatch melt in subsidiary extruder, obtain release functional layer melt；By homopolypropylene with it is anti-stick
Even agent melts in subsidiary extruder, obtains bottom melt；Three kinds of melts are filtered respectively, and are converged in die head through die head
Extrusion, extruder die head temperature are 245 DEG C；
（2）Attach to by high pressure air knife on 33 DEG C of sharp cooling rolls in 33 DEG C of water-baths that Quench is formed from the melt of die head extrusion
Slab；
（3）Slab enters longitudinal stretching after pressure roller and compressed air water removal, and slab is preheated by 130 DEG C, and
Longitudinal stretching at 128 DEG C, stretching ratio is 5.0；
（4）Carry out cross directional stretch again after longitudinal stretching, preheated before cross directional stretch with 168 DEG C, at 158 DEG C into
Row stretching, 164 DEG C of thermal finalizations, stretching ratio 7.5；
（5）Film after stretching horizontally enter after room temperature is air-cooled traction flattening system carry out thickness measuring feedback, winding, when
Cut, pack after effect.
Embodiment 4
Each component is weighed in proportion, the first functional layer uses 86 parts of homopolypropylene, 6 parts of silicone masterbatch and 8 parts of carbonic acid
Calcium masterbatch, sandwich layer using 85 parts of homopolypropylene, 15 parts of calcium carbonate masterbatch, the second functional layer using 86 parts of homopolypropylene, 6 parts
Silicone masterbatch and 8 parts of calcium carbonate masterbatch.Produced using following production and processing step：
（1）Homopolypropylene, calcium carbonate masterbatch are heated to melting in main extruder, obtain sandwich layer melt；By homopolymerization poly- third
Alkene, silicone masterbatch, calcium carbonate masterbatch melt in subsidiary extruder, obtain the first functional layer and the second functional layer melt respectively；Will
Three kinds of melts filter respectively, and converge in die head and extruded through die head, and extruder die head temperature is 242 DEG C；
（2）Attach to by high pressure air knife on 31 DEG C of sharp cooling rolls in 32 DEG C of water-baths that Quench is formed from the melt of die head extrusion
Slab；
（3）Slab enters longitudinal stretching after pressure roller and compressed air water removal, and slab is preheated by 125 DEG C, and
Longitudinal stretching at 125 DEG C, stretching ratio is 4.5；
（4）Carry out cross directional stretch again after longitudinal stretching, preheated before cross directional stretch with 167 DEG C, at 156 DEG C into
Row stretching, 163 DEG C of thermal finalizations, stretching ratio 7.5；
（5）Film after stretching horizontally enter after room temperature is air-cooled traction flattening system carry out thickness measuring feedback, winding, when
Cut, pack after effect.
Embodiment 5
Each component is weighed in proportion, the first functional layer uses 10 parts of silicone masterbatch, 85 parts of homopolypropylene and 5 parts of carbonic acid
Calcium masterbatch, sandwich layer are gathered using 85 parts of polypropylene, 15 parts of calcium carbonate masterbatch, the second functional layer using 6 parts of silicone masterbatch, 89 parts of homopolymerizations
Propylene and 5 parts of calcium carbonate masterbatch.
（1）Homopolypropylene, calcium carbonate masterbatch are heated to melting in main extruder, obtain sandwich layer melt；By homopolymerization poly- third
Alkene, silicone masterbatch, calcium carbonate masterbatch melt in subsidiary extruder, obtain the first functional layer and the second functional layer melt respectively；Will
Three kinds of melts filter respectively, and converge in die head and extruded through die head, and extruder die head temperature is 242 DEG C；
（2）Attach to by high pressure air knife on 31 DEG C of sharp cooling rolls in 32 DEG C of water-baths that Quench is formed from the melt of die head extrusion
Slab；
（3）Slab enters longitudinal stretching after pressure roller and compressed air water removal, and slab is preheated by 125 DEG C, and
Longitudinal stretching at 125 DEG C, stretching ratio is 4.5；
（4）Carry out cross directional stretch again after longitudinal stretching, preheated before cross directional stretch with 167 DEG C, at 156 DEG C into
Row stretching, 163 DEG C of thermal finalizations, stretching ratio 7.5；
（5）Film after stretching horizontally enter after room temperature is air-cooled traction flattening system carry out thickness measuring feedback, winding, when
Cut, pack after effect.
Embodiment 6
Each component is weighed in proportion, the first functional layer uses 10 parts of silicone masterbatch, 85 parts of homopolypropylene and 5 parts of carbonic acid
Calcium masterbatch, sandwich layer is using 85 parts of polypropylene, 15 parts of calcium carbonate masterbatch, and the second functional layer is using 10 parts of silicone masterbatch, 85 parts of homopolymerizations
Polypropylene and 5 parts of calcium carbonate masterbatch.
（1）Homopolypropylene, calcium carbonate masterbatch are heated to melting in main extruder, obtain sandwich layer melt；By homopolymerization poly- third
Alkene, silicone masterbatch, calcium carbonate masterbatch melt in subsidiary extruder, obtain the first functional layer and the second functional layer melt respectively；Will
Three kinds of melts filter respectively, and converge in die head and extruded through die head, and extruder die head temperature is 248 DEG C；
（2）Attach to by high pressure air knife on 33 DEG C of sharp cooling rolls in 34 DEG C of water-baths that Quench is formed from the melt of die head extrusion
Slab；
（3）Slab enters longitudinal stretching after pressure roller and compressed air water removal, and slab is preheated by 135 DEG C, and
Longitudinal stretching at 130 DEG C, stretching ratio is 5.0；
（4）Carry out cross directional stretch again after longitudinal stretching, preheated before cross directional stretch with 168 DEG C, at 158 DEG C into
Row stretching, 167 DEG C of thermal finalizations, stretching ratio 7.5；
（5）Film after stretching horizontally enter after room temperature is air-cooled traction flattening system carry out thickness measuring feedback, winding, when
Cut, pack after effect.
Release performance contrasts：
With 3M 810# standard testing adhesive tapes（Width 19mm) carry out performance detection with the following method on tensilon：
（1）Sample surfaces are pasted on by adhesive tape is smooth.And pressed 5 times back and forth repeatedly with finger, ensure that adhesive tape is adjacent to sample
Surface；（2）One end of adhesive tape is fixed with tensilon upper fixture, sample film is fixed on fixture under puller system, detects adhesive tape
Adhesion between sample.Testing result is as follows：
1 testing result of table
It can be found by contrast, the product that the present invention is produced and plain edition bidirectional stretching polypropylene film（Adhesive tape
With）Test result（Usual corona layer is used as rubberised layer, and non-corona layer is as release layer）Compare, product subsurface of the present invention glues
Attached power substantially reduces, and has excellent release effect so as to as release film application.
In addition, plain polypropylene applies silicon release film in addition to needing to apply silicon, its product density is about 0.91g/cm3, and
The present invention more causes the reduction of product global density in addition to removing the step for applying silicon from due to adding calcium carbonate masterbatch in sandwich layer
To 0.6-0.8g/cm3, so as to significantly reduce the use cost of product.
Claims (8)
1. one kind exempts to apply silicon release film, three-decker with the first functional layer, intermediate layer and bottom or with the first functional layer,
Intermediate layer and the three-decker of the second functional layer, it is characterised in that the first functional layer and the second functional layer include following weight
The component of part, 75-90 parts of homopolypropylene, 5-10 parts of silicone masterbatch and 5-15 parts of calcium carbonate masterbatch, intermediate layer are sandwich layer, including
10-30 parts of the component of following parts by weight, 70-90 parts of homopolypropylene and calcium carbonate masterbatch, bottom includes the group of following parts by weight
Point, 2-10 parts of 90-98 parts of homopolypropylene and antibock Masterbatch.
2. according to claim 1 exempt to apply silicon release film, it is characterised in that the first functional layer and the second functional layer include
The component of following parts by weight, 6 parts and 8 parts 86 parts of homopolypropylene, silicone masterbatch calcium carbonate masterbatch, intermediate layer includes following weight
The component of part, 85 parts of homopolypropylene and 15 parts of calcium carbonate masterbatch, bottom include the component of following parts by weight, homopolypropylene 96
4 parts of part and antibock Masterbatch.
3. according to claim 1 exempt to apply silicon release film, it is characterised in that the first functional layer and the second function layer thickness are equal
For 5-10 μm, intermediate layer thickness is 30-60 μm, and underlayer thickness is 2-5 μm.
4. a kind of claim 1-3 any one of them is exempted to apply the preparation method of silicon release film, it is characterised in that including following step
Suddenly：
（1）Each component is weighed in proportion, homopolypropylene, calcium carbonate masterbatch are heated to melting in main extruder, obtain sandwich layer
Melt；Homopolypropylene, silicone masterbatch, calcium carbonate masterbatch are melted in subsidiary extruder, obtain the first functional layer melt respectively
With the second functional layer melt；When the release film includes bottom, by homopolypropylene and antiblocking agent in subsidiary extruder
Melting, obtains bottom melt；Three kinds of melts are filtered respectively, and converges in extruder die head and is extruded through die head；
（2）Quench in a water bath is attached on sharp cooling roll by high pressure air knife from the melt of die head extrusion and forms slab；
（3）Slab carries out longitudinal stretching after pressure roller and compressed air water removal；
（4）Carry out cross directional stretch again after longitudinal stretching；
（5）After film after stretching horizontally enters traction flattening system progress thickness measuring feedback, winding, timeliness after room temperature is air-cooled
Cut, packed.
5. the preparation method according to claim 4 for exempting to apply silicon release film, it is characterised in that step（1）Middle extruder die
Head temperature is 240-250 DEG C.
6. the preparation method according to claim 4 for exempting to apply silicon release film, it is characterised in that step（2）Middle Quench roller temperature
30-35 DEG C of degree, bath temperature are 30-35 DEG C.
7. the preparation method according to claim 4 for exempting to apply silicon release film, it is characterised in that step（3）Middle longitudinal stretching
Concretely comprise the following steps, slab first is preheated at a temperature of 120-140 DEG C, the longitudinal stretching at 120-135 DEG C, stretching ratio exists
4.0-5.5。
8. the preparation method according to claim 4 for exempting to apply silicon release film, it is characterised in that step（4）Middle cross directional stretch
Concretely comprise the following steps, preheated at a temperature of 165-170 DEG C before slab cross directional stretch, drawn at a temperature of 155-160 DEG C
Stretch, 162-168 DEG C of thermal finalization, stretching ratio is 7.0-8.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610506646.6A CN106113830B (en) | 2016-07-01 | 2016-07-01 | One kind is exempted to apply silicon release film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610506646.6A CN106113830B (en) | 2016-07-01 | 2016-07-01 | One kind is exempted to apply silicon release film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106113830A CN106113830A (en) | 2016-11-16 |
| CN106113830B true CN106113830B (en) | 2018-05-08 |
Family
ID=57467575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN106832803B (en) * | 2016-12-25 | 2018-12-07 | 泉州天泉信息科技有限公司 | A kind of preparation method of high-temperature stable release film |
| CN107351498A (en) * | 2017-07-17 | 2017-11-17 | 安徽国风塑业股份有限公司 | A kind of release basement membranes of low temperature resistant BOPP and preparation method thereof |
| JP7287273B2 (en) * | 2017-12-25 | 2023-06-06 | 東レ株式会社 | release film |
| CN109278388B (en) * | 2018-09-30 | 2021-06-22 | 安徽国风塑业股份有限公司 | Extinction type high-barrier biaxially-oriented polypropylene cold-seal base film and preparation method thereof |
| CN112026315B (en) * | 2020-07-14 | 2022-10-18 | 黄山永新股份有限公司 | Cast polypropylene peelable release film and preparation method thereof |
| CN113183580A (en) * | 2021-05-28 | 2021-07-30 | 广东德冠薄膜新材料股份有限公司 | Biaxially oriented polypropylene release film, preparation method thereof and adhesive tape film |
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| CN104553218A (en) * | 2015-01-13 | 2015-04-29 | 浙江凯利新材料股份有限公司 | Ultralow-temperature heat-seal two-way stretching polypropylene film and preparation method thereof |
| CN105172284A (en) * | 2015-07-30 | 2015-12-23 | 中山火炬职业技术学院 | BOPP film with endurable and smoothness characteristics and preparation method therefor |
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| CN104553218A (en) * | 2015-01-13 | 2015-04-29 | 浙江凯利新材料股份有限公司 | Ultralow-temperature heat-seal two-way stretching polypropylene film and preparation method thereof |
| CN105172284A (en) * | 2015-07-30 | 2015-12-23 | 中山火炬职业技术学院 | BOPP film with endurable and smoothness characteristics and preparation method therefor |
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