CN105966011A - Self-adhesive surface protection film with high temperature resistance and manufacturing method thereof - Google Patents
Self-adhesive surface protection film with high temperature resistance and manufacturing method thereof Download PDFInfo
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- CN105966011A CN105966011A CN201610300859.3A CN201610300859A CN105966011A CN 105966011 A CN105966011 A CN 105966011A CN 201610300859 A CN201610300859 A CN 201610300859A CN 105966011 A CN105966011 A CN 105966011A
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- self
- surface protection
- protection film
- adhesive surface
- film
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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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a self-adhesive surface protection film with high temperature resistance. The protection film comprises a self-adhesive layer, an intermediate layer and an anti-sticking layer. The film is characterized in that the self-adhesive layer comprises flexible polypropylene; the intermediate layer comprises an ethylene-propylene copolymer with few fish-eyes and block copolymerized polypropylene; and the self-adhesive layer employs block copolymerized polypropylene. The invention also discloses a method for manufacturing the high transparency type self-adhesive surface protection film. The method comprises the following steps in order: dedusting of raw materials, automatic weighing and metering of raw materials, heating and extrusion, high-efficiency filtering, co-extrusion and film formation, cooling and sizing, automatic gauge control, trimming and rolling, and cutting and packaging. The self-adhesive surface protection film with high temperature resistance has the characteristics of high temperature resistance, self-adhesion stability, and the like. The film can be widely applied to surface protection fields of PC sheet materials, PMMA sheet materials, and the like which are prepared by thermal forming at a high temperature.
Description
Technical field
The present invention relates to autohension protecting film field, be specifically related to a kind of high-temperature resistant self-adhesive surface protection film and manufacture method thereof.
Background technology
At present; many commodity are transporting, are storing, are processing or in assembling process; generally require the corrosion dust pollution that material and component surface are protected by preventing harmful gas, microorganism; or avoid producing scratch etc. because machinery scratches; one of conventional method is to stick layer protecting film at protected body surface; transporting, store, process or after assembling etc. completes, then protecting film is thrown off, reach to protect the effect of material surface.Protecting film product common on market has PP (polypropylene) film, PVC (polrvinyl chloride) film, PE (polyethylene) film, EVA (ethylene-vinyl acetate copolymer) film etc., has been widely used for the surface protection of composited aluminum and plastic decking, mirror steel plate, decorative panel, lucite, marble and display screen etc..
Wherein, in daily life, people usually can contact or use plastics household utensils, and the plastics household utensils by thermoforming of the many in the market, major part all uses PMMA (polymethyl methacrylate, i.e. lucite) as material.When molding, first PMMA sheet material is heated to softening temperature, is then obtained the shape of required articles for use or device by mold pressing or plastics sucking moulding.In forming process, being generally accomplished by covering one layer of film material shielded on the surface of the PMMA sheet material used, in case damaging its surface during transport or lower procedure, affecting the outward appearance of final finished.Play the film material of surface protection effect for such for, high temperature resistant, clean and viscosity is well necessary application feature.
Protecting film is broadly divided into gluing (coating) type protecting film and co-extrusion protecting film by production technology.Gluing (coating) type protecting film is owing to have employed some materials with relatively lower glass transition temperatures and lower molecular weight; after tearing protecting film, often the binding resin on protecting film can remain in protected object surface; and production process employs organic solvent; not environmentally; polluting big, safety coefficient is low, the most comparatively environmental protection of the production technology of co-extrusion protecting film; process contamination is little, and the binding resin that protecting film remains after tearing is few.
As previously mentioned, high temperature resistant, clean and viscosity is well the surface protection film prerequisite application feature of material, although the production technology more environmental protection of existing co-extrusion protecting film and being used widely, but still come with some shortcomings, such as, existing three-layer co-extruded blown film, its resistance to elevated temperatures is poor, its adhesive strength changes along with temperature height, firm pasting during high temperature, but it is difficult to remove time the most seriously, affect protected object surface, and when low temperature its tack, the most also can come off, the effect on protection surface cannot be played, these deficiencies have impact on protecting film, the particularly development of self-adhering protective film.In view of this, it is provided that a kind of high-temperature resisting clean type self-adhesion protective film and preparation method thereof, overcome defect present in prior art, be industry problem demanding prompt solution.
Summary of the invention
It is an object of the invention to provide a kind of high-temperature resistant self-adhesive surface protection film and manufacture method thereof, solve existing autohension protecting film temperature tolerance poor, the problem that viscosity is unstable.
The technical solution used in the present invention is: a kind of high-temperature resistant self-adhesive surface protection film, including self-adhesive layer, intermediate layer and adherent layer, described self-adhesive layer includes soft polypropylene；Described intermediate layer includes the ethylene-propylene copolymer of low brilliant point, one or both mixture of polyethylene, and described adherent layer uses block copolymerization polypropylene.
Preferably, ethylene-propylene copolymer and the block copolymerization polypropylene of described intermediate layer employing 50/50～90/10 mixes.
The melt flow rate (MFR) of described block copolymerization polypropylene is 4～10/10min, density is 890～910kg/m3, block copolymerization polypropylene can be selected but be not limited to the block copolymerization polypropylene that model is BC3HF that Japan JPP produces, the melt flow rate (MFR) of soft polypropylene is 6～12/10min, density is 860～900kg/m3, and soft polypropylene can be selected but be not limited to the model of Borealis's production is RFG4VM soft polypropylene.
The ethylene-propylene copolymer melt flow rate (MFR) of described low brilliant point is 6～12/10min, and density is 890～910kg/m3；The ethylene-propylene copolymer of low brilliant point can be selected but be not limited to the ethylene-propylene copolymer that model is RD208CF that private limited partnership of Borouge Singapore produces.
The thickness of described self-adhesive layer is the 10～20% of gross thickness, and the thickness in intermediate layer is the 60～80% of gross thickness, and the thickness of adherent layer is the 10～20% of gross thickness.
The method utilizing above-mentioned dispensing to manufacture high-temperature resistant self-adhesive surface protection film, uses three-layer co-extruded casting technology, passes sequentially through following processing step and prepares.First it is delivered to raw material respectively in dedusting, Destaticizing device carry out dedusting, destatic, powder impurity that may be present in raw material is removed, it is to avoid the powder brilliant point that long-time degradation causes in an extruder.Described dedusting, Destaticizing device are the raw material dust arrester of PELLETRON company of the U.S..The extrusion capacity of every extruder by automatic weighing system, is automatically controlled, it is ensured that the thickness evenness of each functional layer is consistent by removing dust, Destaticizing device raw material out again by automatic Weighing metering.Being weighed the feedstock transportation after metering and carry out fusing extrusion to heated extruder, heated extruder uses the screw extruder with decussation hole homogenizing zone, it is ensured that raw material plastifies uniformly in extrusion, it is to avoid produce brilliant point because of degraded.Molten resin passes through the disc-type high efficiency particulate air filter of Japan's NAGASE Patent design after extruder is extruded again, melt is filtered, its filtering accuracy reaches 30um, it is possible to filter out the macroscopic impurity of people, it is ensured that thin film face crystalline substance point quantity controls within standard.The melt of three extruder extrusions is a melt film with three difference in functionality layers by the set of blocks that gathers materials, and melt film cooled roller cooling and shaping is thin film.
The thin film crystalline substance point quantity prepared through the method is few, and performance is more stable.Following table is the thin film crystalline substance point population size control table that this method prepares.
As can be seen from the table, the thin film crystalline substance point quantity that this method prepares is far less than international average level.Meanwhile, this raw material and method the thin film prepared, recording its viscosity through realization is 3-5g/15mm, and extinction is mist degree about 30%, and intensity is MD/TD 40/30MPa, is resistant to the high temperature of 120 DEG C, and keeps good autohension.
Beneficial effects of the present invention: by the high-temperature resistant self-adhesive surface protection film obtained by inventive formulation, there is face crystalline substance point quantity few；The advantages such as resistance to temperature is high, viscosity stabilized.Using soft polypropylene in described self-adhesive layer, soft polypropylene is a kind of syndiotactic polypropylene, and the methyl on its strand ensures stablizing of its crystalline state at the top-bottom cross ordered arrangement of main chain, such regular arrangement mode.Use soft polypropylene to improve the stability of thin film viscosity in self-adhesive layer, reduce the amplitude that viscosity changes with temperature-time change.The crystal region of this soft polypropylene and the size of amorphous region are controlled in nanoscale, have low-density, softness, the feature such as transparent and high temperature resistant, and it is maximum uses temperature can reach 125 DEG C, but its Vicat softening point only has 60 DEG C.
The ethylene-propylene copolymer that described intermediate layer uses low crystalline substance to select is major ingredient, and low brilliant some ethylene-propylene copolymer is the bipolymer that a class special catalyst catalyzes and synthesizes, and is evenly distributed owing to it has strand, is not easy to produce brilliant point in the course of processing.In low brilliant some ethylene-propylene copolymer, add block copolymerization polypropylene, its objective is to improve the heat resistance of intermediate layer material.
Described adherent layer uses block copolymerization polypropylene, block copolymerization polypropylene is to be 97-98% propylene by mass ratio and a class co-polypropylene that 2-3% ethylene is polymerized under catalyst, owing to the polyethylene section of company existing in its strand is embedded in polypropylene molecular chain regularly, this structure makes it have the features such as fusing point high (the highest can reach 168 DEG C), temperature tolerance high (the highest can reach 160 DEG C), intensity are big.
The manufacture method of the present invention is supporting raw material dust arrester on production equipment, guarantee raw material entering before extruder by destaticing, dust arrester, powder impurity that may be present in raw material is removed, it is to avoid the powder brilliant point that long-time degradation causes in an extruder；Supporting automatic weighing system, is automatically controlled the extrusion capacity of every extruder by automatic Weighing metering, it is ensured that the thickness evenness of each functional layer is consistent；Use the screw extruder with decussation hole homogenizing zone, it is ensured that raw material plastifies uniformly in extrusion, it is to avoid produce brilliant point because of degraded；Supporting disc-type high efficiency particulate air filter, making molten resin after extruder is extruded, then filter melt through disc-type high efficiency particulate air filter, its filtering accuracy reaches 30um, the macroscopic impurity of people can be filtered out, it is ensured that thin film face crystalline substance point quantity controls within standard；Ensure cutting apparatus cleaning.
Detailed description of the invention
Embodiment 1:
A kind of high-temperature resistant self-adhesive surface protection film, including self-adhesive layer, intermediate layer and adherent layer, described self-adhesive layer includes soft polypropylene；Described intermediate layer is made up of ethylene-propylene copolymer and the block copolymerization polypropylene of low brilliant point, and the mass percent of ethylene-propylene copolymer and block copolymerization polypropylene is 50/50.Described adherent layer uses block copolymerization polypropylene.
The thickness of described self-adhesive layer is the 10% of gross thickness, and the thickness in intermediate layer is the 75% of gross thickness, and the thickness of adherent layer is the 15% of gross thickness.
Embodiment 2:
A kind of high-temperature resistant self-adhesive surface protection film, comprises self-adhesive layer, intermediate layer and adherent layer.Described self-adhesive layer includes soft polypropylene；Described intermediate layer is made up of ethylene-propylene copolymer and the block copolymerization polypropylene of low brilliant point, and the mass percent of ethylene-propylene copolymer and block copolymerization polypropylene is 70/30.Described adherent layer uses block copolymerization polypropylene.
The thickness of described self-adhesive layer is the 15% of gross thickness, and the thickness in intermediate layer is the 70% of gross thickness, and the thickness of adherent layer is the 15% of gross thickness.
Embodiment 3:
A kind of high-temperature resistant self-adhesive surface protection film, comprises self-adhesive layer, intermediate layer and adherent layer.Described self-adhesive layer includes soft polypropylene；Described intermediate layer is made up of ethylene-propylene copolymer and the block copolymerization polypropylene of low brilliant point, and the mass percent of ethylene-propylene copolymer and block copolymerization polypropylene is 90/10.Described adherent layer uses block copolymerization polypropylene.
The thickness of described self-adhesive layer is the 20% of gross thickness, and the thickness in intermediate layer is the 65% of gross thickness, and the thickness of adherent layer is the 15% of gross thickness.
Performance detects
Some design parameters are tested by the high-temperature resistant self-adhesive surface protection film prepared in above-described embodiment 1 to 3 according to country's respective standard, concrete test result such as following table:
Claims (5)
1. a high-temperature resistant self-adhesive surface protection film, including self-adhesive layer, intermediate layer and adherent layer, it is special
Levy and be: described self-adhesive layer includes soft polypropylene；Described intermediate layer by low brilliant point ethylene-propylene copolymer and
Block copolymerization polypropylene forms, and described adherent layer uses block copolymerization polypropylene.
2. high-temperature resistant self-adhesive surface protection film as claimed in claim 1, it is characterised in that: described low
The ethylene-propylene copolymer melt flow rate (MFR) of brilliant point is 6～10g/10min, and density is 880～900kg/m3.
3. high-temperature resistant self-adhesive surface protection film as claimed in claim 1, it is characterised in that: described from
The thickness of adhesion coating is the 10～20% of gross thickness, and the thickness in intermediate layer is the 60～80% of gross thickness, adherent layer
Thickness is gross thickness 10～20%.
4. high-temperature resistant self-adhesive surface protection film as claimed in claim 1, it is characterised in that: in described
The mass percent of interbed ethylene-propylene copolymer and polyethylene is 50/50～90/10.
5. a manufacture method for high-temperature resistant self-adhesive surface protection film, passes sequentially through following processing step system
, be followed successively by raw material dedusting, the metering of raw material automatic Weighing, add hot-extrudable, high efficiency filter, co-extrusion film forming,
Cooling and shaping, gauge automatic control, defect detection, trimming rolling, Ageing Treatment, cut packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610300859.3A CN105966011A (en) | 2016-05-05 | 2016-05-05 | Self-adhesive surface protection film with high temperature resistance and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610300859.3A CN105966011A (en) | 2016-05-05 | 2016-05-05 | Self-adhesive surface protection film with high temperature resistance and manufacturing method thereof |
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| CN105966011A true CN105966011A (en) | 2016-09-28 |
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| CN201610300859.3A Pending CN105966011A (en) | 2016-05-05 | 2016-05-05 | Self-adhesive surface protection film with high temperature resistance and manufacturing method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63278844A (en) * | 1987-04-15 | 1988-11-16 | ミネソタ マイニング アンド マニユフアクチユアリング カンパニー | Reflective ability sheet material with backing film |
| US20100167038A1 (en) * | 2004-01-05 | 2010-07-01 | Sika Technology Ag | Protective film consisting of a hot-melt adhesive and method and device for applying said film |
| CN202148278U (en) * | 2011-07-06 | 2012-02-22 | 俞明高 | Self-adhesion protective film |
| CN103336321A (en) * | 2012-12-24 | 2013-10-02 | 湖北慧狮塑业股份有限公司 | Polypropylene type optical protective film |
| CN104354414A (en) * | 2014-11-15 | 2015-02-18 | 佛山新长盛塑料薄膜有限公司 | High-temperature-resistant clean type self-adhesive protection film and preparation method thereof |
| CN105128496A (en) * | 2015-10-15 | 2015-12-09 | 昆山金华安电子科技有限公司 | Production technology for high-viscosity CPP self-sticking protection film |
-
2016
- 2016-05-05 CN CN201610300859.3A patent/CN105966011A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63278844A (en) * | 1987-04-15 | 1988-11-16 | ミネソタ マイニング アンド マニユフアクチユアリング カンパニー | Reflective ability sheet material with backing film |
| US20100167038A1 (en) * | 2004-01-05 | 2010-07-01 | Sika Technology Ag | Protective film consisting of a hot-melt adhesive and method and device for applying said film |
| CN202148278U (en) * | 2011-07-06 | 2012-02-22 | 俞明高 | Self-adhesion protective film |
| CN103336321A (en) * | 2012-12-24 | 2013-10-02 | 湖北慧狮塑业股份有限公司 | Polypropylene type optical protective film |
| CN104354414A (en) * | 2014-11-15 | 2015-02-18 | 佛山新长盛塑料薄膜有限公司 | High-temperature-resistant clean type self-adhesive protection film and preparation method thereof |
| CN105128496A (en) * | 2015-10-15 | 2015-12-09 | 昆山金华安电子科技有限公司 | Production technology for high-viscosity CPP self-sticking protection film |
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Application publication date: 20160928 |
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