WO2008056520A1 - Film adhésif sensible à la pression - Google Patents
Film adhésif sensible à la pression Download PDFInfo
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- WO2008056520A1 WO2008056520A1 PCT/JP2007/070402 JP2007070402W WO2008056520A1 WO 2008056520 A1 WO2008056520 A1 WO 2008056520A1 JP 2007070402 W JP2007070402 W JP 2007070402W WO 2008056520 A1 WO2008056520 A1 WO 2008056520A1
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- WIPO (PCT)
- Prior art keywords
- film
- adhesive
- sensitive adhesive
- adhesive layer
- layer
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
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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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/025—Copolymer of an unspecified olefine with a monomer other than an olefine
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/006—Presence of polyolefin in the substrate
Definitions
- the present invention relates to an adhesive film.
- the adhesive film of the present invention has an unfavorable influence on the surface of the article such as dust adhesion or scratching by sticking it on the surface of the article such as a synthetic resin plate, a decorative plywood, a metal plate and a coated steel plate. It can be particularly preferably used as a surface protective film for protection, and as a surface protective film at the time of baking coating of automobiles or solder immersion of printed circuit boards.
- the term “adhesive film” in the present invention also means an adhesive sheet or an adhesive tape.
- adhesive films for the purpose of protecting the surface of an object to be coated have been used during processing, storage and transportation of building materials, electricity, electronic products, automobiles, etc. It should have good adhesion and be able to be easily peeled off after use without being contaminated with adhesive.
- adhesive films based on polyolefin resins have been used instead of adhesive films based on plasticized butyl chloride resin. 1S These adhesive resins based on polyolefin resins are mainly based on low-crystalline or non-crystalline adhesive layers such as EVA and low-density polyethylene, and adhesive layers composed of elastomers such as SIS and SEBS. The one formed by coextrusion with the layer is used.
- the above-mentioned adhesive film is affected by the environment in which the joined body is placed and immediately changes particularly over time, particularly in a high temperature environment. As a result, the adhesive strength increases and the adherend strength increases. There were problems such as difficulty in peeling off and adhesive remaining.
- Japanese Patent Application Laid-Open No. 2006-63123 discloses an adhesive that maintains a suitable adhesive property that does not change with time even under a low temperature environment or a high temperature environment regardless of the operating temperature range.
- a composition comprising an amorphous olefin polymer and a specific ethylene polymer is described.
- Patent Document 1 JP-A-2006-63123 [0004] Also in the above-mentioned JP-A-2006-63123, depending on the storage state of the pressure-sensitive adhesive film, it is not always sufficient, especially when stored in a roll state, the surface of the pressure-sensitive adhesive layer is influenced by the opposite surface. In some cases, it may cause extreme changes over time and further improvement is required.
- FIG. 1 is a schematic diagram of a measurement sample.
- the problem to be solved by the present invention is that there is little change in adhesive strength immediately after bonding to an adherend and after lapse of time. Further, when the adhesive film is stored in a roll state, it is affected by the storage state. It is providing the adhesive film which does not have.
- the present invention is a stretched polypropylene resin film comprising a laminate having an adhesive layer on the surface of a base material layer comprising a polypropylene resin, wherein the average roughness SRa of the adhesive layer surface is 0 ⁇ OlO ⁇ m or more and 0.032 m or less, and the dynamic hardness of the adhesive layer surface is 0.15 ⁇ £ / 111 2 or more and 1.4 gf / m 2 or less, and the direction perpendicular to the winding direction during film production
- the thickness variation rate power in the lateral direction is 2.0% or more and 7.5% or less, and relates to an adhesive film in which the low molecular weight substance on the adhesive layer surface is less than lmg / m 2
- the pressure-sensitive adhesive film is characterized in that the pressure-sensitive adhesive layer of the film is made of an adhesive resin.
- the film is characterized by being biaxially stretched.
- the average roughness S Ra of the surface on the opposite side of the adhesive layer of the film is characterized by being 0 ⁇ 30 m or less.
- the film is characterized in that the polypropylene resin layer and the adhesive layer are melt extruded and laminated from a plurality of extruders by a coextrusion method.
- the film is characterized in that it is an adhesive film roll obtained by winding the film with a length of 500 m or more and a width of 500 mm or more.
- the adhesive film according to the present invention has little change in adhesive force immediately after being bonded to an adherend and after a lapse of time. Further, when the adhesive film is stored in a roll state, it may be affected by the storage state. There are few advantages. BEST MODE FOR CARRYING OUT THE INVENTION
- the pressure-sensitive adhesive film of the present invention requires a base material layer made of a polypropylene resin.
- the polypropylene resin used here include crystalline polypropylene, a random copolymer block copolymer of propylene and a small amount of ⁇ -olefin. More specifically, as a crystalline polypropylene resin, ⁇ heptane-insoluble isotactic propylene homopolymer used in ordinary extrusion molding or the like and polypropylene containing 60% by weight or more of propylene and other polypropylene resins may be used.
- a copolymer with ⁇ -olefin can be used, and this propylene homopolymer or a copolymer of propylene and another ⁇ -olefin is used alone or in combination.
- ⁇ heptane insolubility is an indicator of polypropylene crystallinity and at the same time indicates safety.
- ⁇ heptane insolubility (25 ° C, 60 ° C according to Ministry of Health and Welfare Notification No. 20 in February 1982). It is preferable to use the one that is compatible with the elution amount after the partial extraction is 150pPm or less (the working temperature exceeds 100 ° C is 30PPm or less)!
- the ⁇ -olefin copolymer component of the copolymer of propylene and other ⁇ -olefins includes ⁇ -olefins having 2 to 8 carbon atoms, such as ethylene or 1-butene, 1-pentene, 1— Hexene, 4-methyl 1-pentene and other C4 or higher ⁇ -olefins are preferred. That's right.
- the copolymer is preferably a random or block copolymer obtained by polymerizing one or more ⁇ -olefins exemplified above with propylene.
- Menoleto flow rate (ma, 0;; to 100g / 10min, preferably (ma 0.5 to 20g / 10min, more preferably 1.0 to 10g / 10min) The range of 2.0 to 5. Og / 10 min is particularly preferable.
- the use of an olefin-based polymer increases the interlayer strength or peels because the adhesive layer is laminated on the polypropylene resin layer. It is desirable to prevent the adhesive layer from remaining on the adherend later.
- an amorphous material having a crystal melting heat amount and a crystallization heat amount of 10 j / g or less is used alone or 3 in differential scanning calorimetry.
- amorphous raw materials that are most desirable to be used in a mixture of 0% by weight or more include, for example, “Tufselen H3522A” manufactured by Sumitomo Chemical Co., Ltd. and “Notio TX1236AJ” manufactured by Mitsui Chemicals, Inc.
- the polyolefin polymer mixed with the amorphous raw material is not particularly limited, and is not limited to ethylene-propylene copolymer, ethylene 1-butene copolymer, ethylene 1-hexene copolymer.
- Polymer ethylene 1-octene copolymer, ethylene 4-methyl 1-pentene copolymer, ethylene 1-propylene 1-butene copolymer, ethylene propylene 1-hexene copolymer, ethylene 1-butene 1-hex Cene copolymer, propylene 1-butene copolymer, propylene 1-hexene copolymer, propylene 1-octene copolymer, propylene-4-methyl-1 pentene copolymer, propylene 1-butene 1 hexene copolymer, Examples include propylene 1-butene-4-methyl-1 pentene copolymer.
- the melt flow rate is preferably in the range of 1 to 10 g / 10 min, and more preferably in the range of 2 to 5 g / 10 min.
- the average roughness SRa of the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive film of the present invention must be 0.032 111 or less. Preferably, 0.5 030 ⁇ M or less, more preferably 0. 028 i m3 ⁇ 4T.
- the contact area is reduced at the time of bonding to the adherend, which is not preferable because it causes a decrease in the adhesive strength.
- the surface of the pressure-sensitive adhesive layer needs to be as flat as possible, and it can be said that additives that form surface irregularities need not be added as much as possible. Furthermore, by using the stretched film which is a requirement of the present invention, since the crystals on the surface are aligned, the surface roughness of the surface is smoothed and the flatness is further improved. On the other hand, it can be said that it is practically difficult to make the average roughness SRa of the surface of the adhesive layer less than 0.000 m even in a stretched film without additives. Preferably it is 0.025 or less.
- the dynamic hardness of the pressure-sensitive adhesive layer surface of the pressure-sensitive adhesive film of the present invention needs to be 0.1 l ⁇ i / urn 2 or more and 1.4 gf / m 2 or less.
- the dynamic hardness is described in Shimadzu review, 50, 3, 321 (1993) and represents the hardness in the ultra-fine region.
- the process of measuring the indenter indentation depth and pressing force and the deformation resistance of the sample continuously. Is expressed by equation (1).
- This dynamic hardness is the hardness obtained from the load and depth of indentation when the indenter is pushed in, and is a characteristic value when the plastic deformation and elastic deformation of the sample are combined.
- the dynamic hardness in the present invention is the hardness of the film surface, which indicates the hardness at a certain depth from the outermost surface of the film, and the hardness at a part having a depth of 1 ⁇ m was used as an index.
- the preferred dynamic hardness of the adhesive layer surface is 0 ⁇ 20 ⁇ / m 2 or more 1 ⁇ 2 gf /
- the dynamic hardness of the adhesive layer surface is less than 0.1 l Sgf / m 2 , the surface is soft and easily deformed, so it is affected by the surface condition of the adherend after bonding to the adherend.
- the surface of the adherend is easily smooth, the surface of the adhesive layer is deformed in accordance with the smoothness, and fine irregularities formed on the surface of the adhesive layer gradually disappear with time. The contact area with the body will increase, and the adhesive strength will improve from the set value, which may make it difficult to peel off or cause adhesive residue, making handling extremely difficult and undesirable. .
- the dynamic hardness of the adhesive layer surface when it exceeds 1. gf / ⁇ m 2, to determine the adhesive strength, it is another factor viscoelasticity is low, does not appear adhesion of interest, undesirable .
- the viscoelasticity of the adhesive film surface layer is a major factor in the force used to peel the adhesive film from the adherend. The stress acting in the direction opposite to the direction becomes higher and the adhesive strength becomes stronger.
- the dynamic hardness of the adhesive layer surface here means that the film surface layer becomes harder. This means that the viscoelasticity is low and the adhesive strength is not high.
- the pressure-sensitive adhesive film of the present invention needs to have a thickness variation rate of 2.0% to 7.5% in the lateral direction, which is a direction perpendicular to the winding direction during film production. Preferably, it is 7.0% or less, and more preferably 6.5% or less.
- a thickness variation rate exceeds 7.5%, it is not preferable because when the pressure-sensitive adhesive film is pressure-applied on the adherend, pressure unevenness occurs depending on the location and the pressure-sensitive adhesive force is reduced. On the other hand, it can be said that it is practically difficult to keep the thickness fluctuation rate below 2.0%.
- the pressure-sensitive adhesive film of the present invention may contain a known additive as required, or may be coated on the film surface.
- a lubricant, an antiblocking agent, a heat stabilizer, an antioxidant, an antistatic agent, a light resistance agent, an impact resistance improvement agent, or the like may be contained, or the surface may be coated.
- the target viscosity should be less than lmg / m 2 on the adhesive layer surface. Necessary for gaining strength.
- the measurement of the low molecular weight substance on the surface of the adhesive layer was carried out according to the following procedure. The surface of the adhesive layer does not corrode the resin that constitutes the adhesive layer such as ethanol!
- the organic solvent is removed from the washing liquid with an evaporator, and the residue is weighed.
- the residue is weighed.
- the residue is present at lmg / m 2 or more, foreign matter will be present between the surface of the adhesive layer and the adherend surface, reducing the contact area and reducing the van der Waals force. It is not preferable because the power is reduced.
- an additive it is necessary to select a polymer type additive or to study the addition method so that there is no transfer or transfer to the adhesive layer.
- the method for producing the pressure-sensitive adhesive film of the present invention is not particularly limited, but after forming the base material layer and the pressure-sensitive adhesive layer using an inflation film production apparatus or a T-die film production apparatus, respectively, an extrusion laminating method is used.
- a multilayer film may be formed by pasting together or by coextrusion from the beginning.
- the flatness can be improved, so that the thickness variation rate can be within a suitable range.
- the dynamic hardness which is a requirement of the above, an appropriate hardness can be obtained, so that a suitable pressure-sensitive adhesive film having no change with time can be obtained.
- the pressure-sensitive adhesive layer which is one of the requirements of the present invention, is to give an appropriate temperature within the range in which the finolene does not melt in the preheating and stretching temperature in the stretching process. Desirable for obtaining surface dynamic hardness. If heat is insufficient, the crystal surface orientation increases the hardness of the film surface and may reduce the adhesive strength. Since the crystal part of the adhesive layer is melted to become amorphous and the amorphous part increases, the dynamic hardness of the adhesive layer surface is lowered, and the change in the adhesive force with time may be increased.
- the preferred temperature range is illustrated as an example of the preheating temperature during longitudinal stretching from 100 ° C to 135 ° C and the stretching temperature from 100 ° C to 125 ° C. I can do it.
- the preheating is less than 135 ° C and the stretching exceeds 125 ° C, the surface of the adhesive layer is almost unstretched, reducing the dynamic hardness and reducing the film thickness. This is not preferable because it causes deterioration of the fluctuation rate and causes the adhesive force to change over time.
- the draw ratio it is preferable to take an appropriate range. If the ratio is low, the target thickness fluctuation rate may not be obtained. If the ratio is high, the film surface hardness increases, This is not preferable because the adhesive strength may not be obtained. Examples of the preferred stretching ratio for sequential biaxial stretching include 3 to 6 times in the longitudinal direction and 6 to 10 times in the transverse direction.
- the pressure-sensitive adhesive film of the present invention may be formed with a release layer on the opposite surface of the pressure-sensitive adhesive layer.
- a layer made of a silicone resin or a fluororesin, a resin made of a propylene-ethylene block copolymer, and a polyethylene resin are mixed. By doing so, a layer having a rough surface can be laminated in a mat shape.
- the resin suitable for obtaining a mat-like surface include propylene monoethylene block copolymers such as “PC523D” and “PC523A” manufactured by Sanalomer Co., Ltd.
- the average surface roughness SRa when formed into a film is preferably 0.20 m or more.
- PC523D manufactured by Sanalomar Co., Ltd. is advantageous.
- the surface roughness of the release layer at this time should be a surface having an average roughness SRa of 0.40 m or less.
- the surface roughness SRa exceeds 0 ⁇ 40 m, when storing the adhesive film in roll form, the surface irregularities of the release layer are transferred to the adhesive layer, reducing the contact area during adhesion, especially in the initial stage. This is not preferable because it may cause a decrease in adhesive strength.
- the longitudinal stretching preheating temperature during stretching is not too low.
- the stretching preheating temperature is lowered, the propylene ethylene block copolymer is reduced. Since the irregularities formed by utilizing the incompatibility of the polyethylene resin and the polyethylene resin are excessively formed, it is not preferable.
- the preferred preheating temperature during longitudinal stretching is 100. It is possible to exemplify above ° C.
- the surface roughness of the release layer is such that the average roughness SRa is not more than 0.30 in.
- the thickness of the pressure-sensitive adhesive film of the present invention is 1 a m or more and less than 10 ⁇ m.
- ⁇ m or more and 9 m or less More preferably, ⁇ m or more and 9 m or less.
- the thickness of the adhesive film is less than 1 m, there is a problem with adhesion, and if it is 10 m or more, there is a problem that the dynamic hardness of the surface of the adhesive layer is too low.
- the adhesive film of the present invention is a synthetic resin plate, a stainless steel plate (for example, for building materials), an aluminum plate, a decorative plywood, a steel plate, a glass plate, a home appliance, a precision machine, and the surface of an automobile body at the time of manufacture.
- a synthetic resin plate for example, for building materials
- an aluminum plate for example, aluminum plate
- a decorative plywood for example, a steel plate
- a glass plate for example, a home appliance, a precision machine
- secondary processing for example, bending and pressing
- the average roughness SRa was determined by measuring under the following setting conditions using a model ET-30HK manufactured by Kosaka Laboratory.
- Shimadzu Dynamic Ultra Micro Hardness Tester DUH-201 room temperature 20-23 ° C, humidity 40-80 It measured on condition of the following in% environment, and computed with the following formula.
- This dynamic hardness (DH) is the hardness obtained from the load and indentation depth of the indentation process when the indenter is pushed in! / And is defined by the following equation (1).
- a sample having a length of 40 mm with respect to the winding direction during film production and a length of 500 mm with respect to the direction perpendicular to the winding direction was cut out, and the continuous thickness in the direction perpendicular to the winding direction was measured under the above conditions. .
- the thickness variation rate was calculated by the following equation (2). The measurement was performed five times for one sample, and the average value was taken as the thickness fluctuation rate of the sample.
- Thickness variation rate (%) [(maximum thickness minimum thickness) / average thickness] X 100 (2)
- Acrylic plate (Mitsubishi Rayon Co., Ltd .: Atarilite 3mm thickness) 50mm x 150mm is prepared as the adherend, and the test piece is 25mm in the winding direction during film production and 180mm in the direction perpendicular to it.
- the test piece was cut out and covered with a rubber roll having a mass of 2000 g (with a spring hardness of 80Hs on the roller surface and a thickness of 45mm and a diameter (including the rubber layer) of 95mm covered with a rubber layer of 6mm).
- the body and the test piece were pressed once by reciprocating at a speed of 5 mm / sec.
- the initial one is left for 30 minutes in an environment with a temperature of 23 ° C and a relative humidity of 65%, and the one left for 24 hours is used as a normal condition, using “Tensilon” (UTM-IIIU) manufactured by Toyo Seiki Co., Ltd.
- the resistance value when peeled 180 degrees at a speed of 300 mm / min was defined as the adhesive strength [cN / 25 mm]
- the measurement sample was bonded to the end of the measurement film with pressure-sensitive adhesive film and acrylic plate on the adhesive film side using a cellophane tape with a width of 15 mm as a grip margin for measurement. The results are shown in Fig. 1. The measurement was carried out three times for one sample, and the average value was taken as the adhesive strength of the sample.
- a sample of lm square was cut out from the test film and cut into approximately 5 cm squares to create test pieces. Subsequently, the entire surface of the test piece was strongly washed with ethanol in a washing bottle one by one against the adhesive surface of the test piece, and the washing solution was collected. At this time, the film is pinched with tweezers, and the lower part of the film is first tightened with ethanol, then the lower edge is gripped and turned over to clean the upper part of the first pinched part. Since ethanol always remains on the film after washing, in order not to miss the extract, ethanol was reciprocated several times to ensure that the extract was collected.
- FS2011DG3 manufactured by Sumitomo Chemical Co., ethylene content 0.9 wt%, Merutofu low rate 2. 5 g / 10 min
- SPX78J1 manufactured by Sumitomo Chemical Co., 1-butene content 25 wt 0/0
- the melt flow rate was 7 g / 10 min.
- 30 wt% was melt mixed and extruded with a 60 mm ⁇ single screw extruder (L / D; 22.4) to form a base layer.
- PC523A manufactured by Sanalomer, melt flow rate 5 g / 10 min
- a 65 ⁇ ⁇ single screw extruder L / D; 25
- the obtained film is made into a ronole shape of 500mm width, 500m, winding hardness 80 (manufactured by Shimadzu Corporation, thread winding hardness tester No. K66846), room temperature (23-26C), unwinding 100m after storage for 24 hours between temples.
- winding hardness 80 manufactured by Shimadzu Corporation, thread winding hardness tester No. K66846
- room temperature 23-26C
- Example 1 the resin constituting the base layer is FS2011DG3 (manufactured by Sumitomo Chemical Co., Ltd., ethylene content: 0.9% by weight, melt flow rate: 2.5 g / 10 min) is 100% by weight to form a release layer.
- An adhesive film was obtained in the same manner as in Example 1 except that PC523D (manufactured by Sanalomer, melt flow rate 5 g / 10 min) was changed to 100% by weight.
- the obtained film had a good initial handling strength as in Example 1, had a small change in the adhesive strength with time, and had good handleability.
- Example 2 the resin constituting the adhesive layer was changed to SPX78J1 (Sumitomo Chemical Co., Ltd., 1-butene content 25 wt%, melt flow rate 7 g / 10 min) 100 wt%. Thus, a film was obtained. The obtained film was a non-adhesive film having a high dynamic hardness value.
- Example 2 a film was obtained in the same manner as in Example 1 except that the resin constituting the release layer was changed to 100% by weight of PC523A (manufactured by Sanalomer, melt flow rate 5 g / 10 min). .
- the obtained film is affected by the average surface roughness of the release layer, the average surface roughness value of the adhesive surface increases, changes in the adhesive strength over time, and hinders handling. Met.
- Example 2 a film was obtained in the same manner as in Example 1 except that the resin constituting the adhesive layer was changed to 100% by weight of TX1236A (Mitsui Chemicals, melt flow rate 7 g / 10 min). The obtained film satisfied the requirements of the present invention and had good handling properties with little initial change in the adhesive strength with a strong initial adhesive strength.
- TX1236A Mitsubishi Chemicals, melt flow rate 7 g / 10 min.
- Example 2 a film was obtained in the same manner as in Example 1 except that the pre-heating temperature was 140 ° C and the stretching temperature was 130 ° C.
- the resulting film is dynamic In addition to low hardness, the rate of variation in thickness was large, and the change in adhesive strength over time was large, which hindered handling.
- Example 2 when forming the base layer, as an antistatic agent, polyoxyethylene (2) a 0.56 weight stearylamine monostearate 0/0, N, N-bis (2-hydroxy Echinore) stearylamine 0.14 weight 0/0, stearic acid mono-glyceryl ester with the addition of 1 wt% 0., FS2011DG3 (manufactured by Sumitomo chemical Co., ethylene content 0.9 wt%, main belt flow rate 2. 5 g / 10 min ) was changed to 99.2% by weight, and a film was obtained in the same manner as in Example 1. The obtained film had additives on the surface of the pressure-sensitive adhesive layer, which showed a decrease in pressure-sensitive adhesive force, which hindered handling.
- polyoxyethylene (2) a 0.56 weight stearylamine monostearate 0/0, N, N-bis (2-hydroxy Echinore) stearylamine 0.14 weight 0/0, stearic acid mono-glyceryl este
- Example 2 the take-up speed was 9 m / min, and the discharge rate of each extruder was adjusted, so that it was laminated into one jet of a rice occupancy layer 10 ⁇ m, a base layer 40 ⁇ 111, and a release layer 10 ⁇ m.
- a three-kind three-layer unstretched film with a Tota Nore of 60 mm was obtained.
- the obtained film has a low dynamic hardness and a large thickness fluctuation rate (measured at a length of 200 mm with respect to the direction perpendicular to the winding direction), and the change in adhesive strength with time is large. Therefore, it was a problem in handling.
- the pressure-sensitive adhesive film of the present invention has a small change in adhesive force immediately after being bonded to an adherend and after a lapse of time. Further, when the pressure-sensitive adhesive film is stored in a roll state, it is less susceptible to storage conditions. It can be used in a wide range of application fields such as synthetic resin boards, decorative plywood, metal plates and painted steel sheets, and when baking and printing automobiles and printed circuit boards. It is important to contribute to
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN200780041360.4A CN101631840B (zh) | 2006-11-07 | 2007-10-19 | 胶粘膜 |
KR1020097009244A KR101389150B1 (ko) | 2006-11-07 | 2007-10-19 | 점착 필름 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2006-301096 | 2006-11-07 | ||
JP2006301096 | 2006-11-07 | ||
JP2006316587 | 2006-11-24 | ||
JP2006-316587 | 2006-11-24 |
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WO2008056520A1 true WO2008056520A1 (fr) | 2008-05-15 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/070402 WO2008056520A1 (fr) | 2006-11-07 | 2007-10-19 | Film adhésif sensible à la pression |
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JP (1) | JP5292763B2 (ja) |
KR (1) | KR101389150B1 (ja) |
CN (1) | CN101631840B (ja) |
TW (1) | TWI417361B (ja) |
WO (1) | WO2008056520A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112752815A (zh) * | 2018-09-26 | 2021-05-04 | 三井化学株式会社 | 带有粘接层的功能性层、层叠体及其用途 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010229222A (ja) * | 2009-03-26 | 2010-10-14 | Toyobo Co Ltd | 粘着フィルム |
JP5129204B2 (ja) * | 2009-07-16 | 2013-01-30 | 日東電工株式会社 | 両面粘着テープ |
JP5600905B2 (ja) * | 2009-08-24 | 2014-10-08 | 東洋紡株式会社 | 粘着フィルム |
JP5445023B2 (ja) * | 2009-10-22 | 2014-03-19 | 東洋紡株式会社 | 粘着フイルム |
JP5445022B2 (ja) * | 2009-10-22 | 2014-03-19 | 東洋紡株式会社 | 粘着フイルム |
JP5544821B2 (ja) * | 2009-10-22 | 2014-07-09 | 東洋紡株式会社 | 粘着フィルムロール |
CN102863919B (zh) * | 2011-07-04 | 2014-07-09 | 孟孟 | 无底涂聚丙烯双向拉伸薄膜及其制备方法 |
JP5978051B2 (ja) * | 2011-10-17 | 2016-08-24 | 日東電工株式会社 | 粘着テープ用フィルムおよび粘着テープ |
JP6028661B2 (ja) * | 2013-04-03 | 2016-11-16 | 王子ホールディングス株式会社 | 自己粘着性二軸延伸ポリプロピレンフィルム |
JP6677939B2 (ja) | 2017-10-31 | 2020-04-08 | 東レフィルム加工株式会社 | 積層フィルム |
KR102607556B1 (ko) * | 2018-04-16 | 2023-11-29 | 도레이 필름 카코우 가부시키가이샤 | 적층 필름 |
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KR100635053B1 (ko) * | 2005-06-21 | 2006-10-16 | 도레이새한 주식회사 | 전자부품용 접착테이프 |
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- 2007-10-19 CN CN200780041360.4A patent/CN101631840B/zh not_active Expired - Fee Related
- 2007-10-19 WO PCT/JP2007/070402 patent/WO2008056520A1/ja active Application Filing
- 2007-10-19 KR KR1020097009244A patent/KR101389150B1/ko not_active IP Right Cessation
- 2007-10-25 JP JP2007277195A patent/JP5292763B2/ja active Active
- 2007-11-05 TW TW096141618A patent/TWI417361B/zh not_active IP Right Cessation
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JPH09188857A (ja) * | 1996-01-05 | 1997-07-22 | Sekisui Chem Co Ltd | 表面保護フィルム及びその製造方法 |
JPH09217045A (ja) * | 1996-02-09 | 1997-08-19 | Hitachi Chem Co Ltd | 自動車塗膜保護用粘着フィルム |
JPH09217046A (ja) * | 1996-02-13 | 1997-08-19 | Sekisui Chem Co Ltd | 表面保護フィルム |
JPH09316412A (ja) * | 1996-05-30 | 1997-12-09 | Sekisui Chem Co Ltd | 表面保護フィルム |
JP2005298630A (ja) * | 2004-04-09 | 2005-10-27 | Hitachi Chem Co Ltd | 表面保護用粘着フィルム |
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JP2007126569A (ja) * | 2005-11-04 | 2007-05-24 | Sekisui Chem Co Ltd | 粘着剤及び表面保護フィルム |
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CN112752815A (zh) * | 2018-09-26 | 2021-05-04 | 三井化学株式会社 | 带有粘接层的功能性层、层叠体及其用途 |
Also Published As
Publication number | Publication date |
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CN101631840B (zh) | 2014-02-19 |
KR20090086067A (ko) | 2009-08-10 |
CN101631840A (zh) | 2010-01-20 |
JP5292763B2 (ja) | 2013-09-18 |
TWI417361B (zh) | 2013-12-01 |
JP2008150581A (ja) | 2008-07-03 |
TW200833809A (en) | 2008-08-16 |
KR101389150B1 (ko) | 2014-04-24 |
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