TW201700674A - Adhesive tape - Google Patents

Adhesive tape Download PDF

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Publication number
TW201700674A
TW201700674A TW105110368A TW105110368A TW201700674A TW 201700674 A TW201700674 A TW 201700674A TW 105110368 A TW105110368 A TW 105110368A TW 105110368 A TW105110368 A TW 105110368A TW 201700674 A TW201700674 A TW 201700674A
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Taiwan
Prior art keywords
adhesive tape
weight
pvc
pvc film
less
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TW105110368A
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Chinese (zh)
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TWI747819B (en
Inventor
Tomohito Harada
bo-jun Chen
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Nitto Denko Corp
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Priority claimed from JP2015133295A external-priority patent/JP6633306B2/en
Application filed by Nitto Denko Corp filed Critical Nitto Denko Corp
Publication of TW201700674A publication Critical patent/TW201700674A/en
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Publication of TWI747819B publication Critical patent/TWI747819B/en

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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
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0045—Cable-harnesses
    • 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
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • 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
    • C09J107/00—Adhesives based on natural rubber
    • 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
    • C09J109/00—Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
    • C09J109/06—Copolymers with styrene
    • C09J109/08—Latex
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0016—Plasticisers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • 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
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/302—Applications of adhesives in processes or use of adhesives in the form of films or foils for bundling cables
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/41—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the carrier layer
    • 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
    • C09J2407/00—Presence of natural rubber
    • 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
    • C09J2409/00—Presence of diene rubber
    • 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
    • C09J2421/00—Presence of unspecified rubber
    • C09J2421/006—Presence of unspecified rubber in the substrate
    • 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
    • C09J2427/00—Presence of halogenated polymer
    • C09J2427/006—Presence of halogenated polymer in the substrate
    • 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
    • C09J2467/00—Presence of polyester
    • 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
    • C09J2471/00—Presence of polyether
    • 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
    • C09J2475/00—Presence of polyurethane
    • 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
    • C09J2483/00—Presence of polysiloxane

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

A polyvinyl chloride (PVC) adhesive tape is provided which is not prone to cracking at low temperatures even when the PVC film is thin. This adhesive tape includes a PVC film and an adhesive layer arranged on at least one surface of said PVC film. The adhesive tape has a 80% or higher tensile elongation at break at -20 DEG C.

Description

黏著帶 Adhesive tape

本發明係關於一種具備聚氯乙烯(PVC)膜之黏著帶。 The present invention relates to an adhesive tape having a polyvinyl chloride (PVC) film.

本申請係主張基於2015年4月1日提出申請之日本專利申請2015-75201號、2015年7月2日提出申請之日本專利申請2015-133295號及2015年12月28日提出申請之日本專利申請2015-257442號之優先權，該等申請之所有內容被併入至本說明書中作為參照。 Japanese Patent Application No. 2015-75201 filed on Apr. 1, 2015, Japanese Patent Application No. 2015-133295 filed on July 2, 2015, and Japanese Patent Application No. Priority is claimed on Dec. 2015-257442, the entire contents of each of which is incorporated herein by reference.

於PVC膜之至少一個表面配置有黏著劑層之黏著帶(以下亦稱為「PVC黏著帶」)因其良好之作業性而被廣泛使用於電絕緣用、包裝用、保護用等各種用途。作為與PVC黏著帶相關之先前技術文獻，可列舉專利文獻1及2。 An adhesive tape (hereinafter also referred to as "PVC adhesive tape") having an adhesive layer disposed on at least one surface of a PVC film is widely used for various purposes such as electrical insulation, packaging, and protection because of its excellent workability. Patent Documents 1 and 2 can be cited as prior art documents related to PVC adhesive tapes.

[先前技術文獻] [Previous Technical Literature] [專利文獻] [Patent Literature]

[專利文獻1]日本專利申請公開平8-259909號公報 [Patent Document 1] Japanese Patent Application Laid-Open No. Hei 8-259909

[專利文獻2]日本專利申請公開2009-249510號公報 [Patent Document 2] Japanese Patent Application Publication No. 2009-249510

作為PVC黏著帶之用途之一例，可列舉於組裝於車輛之線束(wire harness)中纏繞於電線之周圍之用途。若能夠使可如此般於線束中使用之PVC黏著帶輕量化，則可利用車輛之輕量化而有助於該車輛之燃料效率之提高，因此有意義。為了使PVC黏著帶輕量化，有效的 是使PVC膜變薄，上述PVC膜係包含塑膠中比重較大之PVC之構件。然而，若使PVC膜變薄，則存在如下傾向：纏繞有使用該PVC膜之PVC黏著帶之線束於低溫下容易於上述PVC黏著帶產生龜裂。 An example of the use of the PVC adhesive tape is a use for winding around a wire in a wire harness incorporated in a vehicle. If the PVC adhesive tape which can be used in the wire harness can be made lighter, it is possible to contribute to the improvement of the fuel efficiency of the vehicle by utilizing the weight reduction of the vehicle. In order to make the PVC adhesive tape lightweight, effective The PVC film is thinned, and the above PVC film comprises a component of PVC having a large specific gravity in the plastic. However, when the PVC film is made thin, there is a tendency that the wire bundle wound with the PVC adhesive tape using the PVC film is liable to cause cracking of the PVC adhesive tape at a low temperature.

本發明係鑒於該情況而成者，其目的在於提供一種即便使PVC膜變薄亦不易於低溫下產生龜裂之PVC黏著帶。 The present invention has been made in view of the above circumstances, and an object thereof is to provide a PVC adhesive tape which is less likely to be cracked at a low temperature even if a PVC film is made thin.

若利用本發明，則提供一種黏著帶，其包含聚氯乙烯膜(PVC膜)、及配置於該PVC膜之至少一個表面之黏著劑層。上述黏著帶(PVC黏著帶)於-20℃下之拉伸斷裂伸長率(以下亦稱為「低溫拉伸斷裂伸長率」)為80%以上。如此般即便於低溫下亦顯示出較高之伸張性之PVC黏著帶即便於低溫下柔軟性亦優異，因此可成為顯示出良好之低溫性能(例如，防止低溫下產生龜裂之性能)者。 According to the present invention, there is provided an adhesive tape comprising a polyvinyl chloride film (PVC film) and an adhesive layer disposed on at least one surface of the PVC film. The tensile elongation at break (hereinafter also referred to as "low-temperature tensile elongation at break") of the above adhesive tape (PVC adhesive tape) at -20 ° C is 80% or more. In this way, the PVC adhesive tape which exhibits high elongation even at a low temperature is excellent in flexibility even at a low temperature, and thus can exhibit good low-temperature properties (for example, prevention of cracking at low temperatures).

作為構成該PVC黏著帶之PVC膜，可較佳地採用包含動態黏度為3000Pa‧s以下之樹脂材料者。若利用此種PVC膜，則存在適宜地實現低溫拉伸斷裂伸長率較大(典型地顯示出80%以上之低溫拉伸斷裂伸長率)之PVC黏著帶之傾向。 As the PVC film constituting the PVC adhesive tape, a resin material having a dynamic viscosity of 3,000 Pa‧s or less can be preferably used. When such a PVC film is used, there is a tendency to suitably achieve a PVC adhesive tape having a low elongation at break at a low temperature (typically exhibiting a low temperature tensile elongation at break of 80% or more).

於較佳之一態樣之黏著帶中，上述PVC膜之厚度為100μm以下。若利用此處所揭示之技術，則可提供一種即便於如此般具備較薄之PVC膜之構成中亦顯示出良好之低溫性能之PVC黏著帶。 In a preferred embodiment of the adhesive tape, the thickness of the PVC film is 100 μm or less. By utilizing the technique disclosed herein, it is possible to provide a PVC adhesive tape which exhibits good low-temperature properties even in the configuration of a thin PVC film.

此處所揭示之黏著帶如上所述即便使PVC膜變薄亦顯示出良好之低溫性能，因此適於該黏著帶之輕量化。此處所揭示之技術例如以基重為100g/m2以下之黏著帶之態樣而適宜地實施，可提供一種輕量且低溫特性良好之黏著帶。 The adhesive tape disclosed herein exhibits good low-temperature properties even when the PVC film is thinned as described above, and is therefore suitable for weight reduction of the adhesive tape. The technique disclosed herein is suitably carried out, for example, in the form of an adhesive tape having a basis weight of 100 g/m 2 or less, and an adhesive tape having a light weight and good low-temperature characteristics can be provided.

於較佳之一態樣之黏著帶中，上述PVC膜含有彈性體。若利用含有彈性體之組成之PVC膜，則存在適宜地實現低溫拉伸斷裂伸長率較大之黏著帶(典型地顯示出80%以上之低溫拉伸斷裂伸長率之黏著帶) 之傾向。上述PVC膜中之上述彈性體之含量例如可設為1~30重量%左右。 In a preferred embodiment of the adhesive tape, the PVC film contains an elastomer. When a PVC film containing a composition of an elastomer is used, there is an adhesive tape which is suitable for achieving a low elongation at low temperature tensile elongation (typically exhibiting an adhesive tape of a low temperature tensile elongation at break of 80% or more) The tendency. The content of the above elastomer in the above PVC film can be, for example, about 1 to 30% by weight.

上述PVC膜典型地含有塑化劑。此處所揭示之技術可以上述PVC膜中之塑化劑之含量例如為10重量%以上且60重量%以下左右之態樣而較佳地實施。若利用此種組成之PVC膜，則存在同時實現良好之低溫特性與良好之耐熱性(例如耐熱劣化性)之傾向。 The above PVC film typically contains a plasticizer. The technique disclosed herein can be preferably carried out in such a manner that the content of the plasticizer in the PVC film is, for example, 10% by weight or more and 60% by weight or less. When a PVC film having such a composition is used, there is a tendency to simultaneously achieve good low-temperature characteristics and good heat resistance (for example, heat deterioration resistance).

構成上述PVC黏著帶之PVC膜較佳為含有脂肪酸金屬鹽。藉由使PVC膜含有脂肪酸金屬鹽，存在耐熱劣化性提高之傾向。作為脂肪酸金屬鹽，可較佳地採用含有屬於週期表之1族、2族、12族、13族及14族之任一者之至少1種金屬元素(其中，Pb除外)者。其中，較佳為含有選自由Li、Na、Ca、Mg、Zn、Ba及Sn所組成之群中之至少1種金屬元素之脂肪酸金屬鹽。 The PVC film constituting the above PVC adhesive tape preferably contains a fatty acid metal salt. When the PVC film contains a fatty acid metal salt, the heat deterioration resistance tends to be improved. As the fatty acid metal salt, at least one metal element (excluding Pb) belonging to any one of Group 1, Group 2, Group 12, Group 13 and Group 14 of the periodic table can be preferably used. Among them, a fatty acid metal salt containing at least one metal element selected from the group consisting of Li, Na, Ca, Mg, Zn, Ba, and Sn is preferable.

此處所揭示之技術可以上述PVC膜中之上述脂肪酸金屬鹽之含量例如為0.02重量%以上且1重量%以下左右之態樣而較佳地實施。若利用此種組成之PVC膜，則存在同時實現良好之低溫特性與良好之耐熱性(典型地為耐熱劣化性)之傾向。 The technique disclosed herein can be preferably carried out in such a manner that the content of the fatty acid metal salt in the PVC film is, for example, about 0.02% by weight to about 1% by weight. When a PVC film having such a composition is used, there is a tendency to simultaneously achieve good low-temperature characteristics and good heat resistance (typically heat deterioration resistance).

又，若利用該說明書，則提供一種具有如下構成之線束：於電線之周圍纏繞有此處所揭示之任一種黏著帶。藉由如此般構成，可於上述線束中實現良好之低溫性能。 Moreover, according to this specification, a wire harness having a configuration in which any of the adhesive tapes disclosed herein is wound around the electric wire is provided. With such a configuration, good low temperature performance can be achieved in the above-mentioned wire harness.

1、2‧‧‧PVC黏著帶(黏著帶) 1, 2‧‧‧PVC adhesive tape (adhesive tape)

11‧‧‧支持基材 11‧‧‧Support substrate

11A‧‧‧第一面 11A‧‧‧ first side

11B‧‧‧第二面 11B‧‧‧ second side

21、22‧‧‧黏著劑層 21, 22‧‧‧ adhesive layer

21A‧‧‧表面(黏著面) 21A‧‧‧Surface (adhesive surface)

圖1係示意性表示一實施形態之黏著帶之構成的剖視圖。 Fig. 1 is a cross-sectional view schematically showing the configuration of an adhesive tape according to an embodiment.

圖2係示意性表示其他實施形態之黏著帶之構成的剖視圖。 Fig. 2 is a cross-sectional view schematically showing the configuration of an adhesive tape according to another embodiment.

以下，對本發明之適宜之實施形態加以說明。本說明書中特別言及之事項以外且對於本發明之實施而言所必需之情況可基於本說明書中所記載之關於發明之實施之指示與提出申請時之技術常識而被業 者所理解。本發明可基於本說明書中所揭示之內容與該領域中之技術常識而實施。 Hereinafter, preferred embodiments of the present invention will be described. The matters necessary for the implementation of the present invention other than those specifically mentioned in the present specification may be based on the instructions on the implementation of the invention and the technical common sense at the time of filing the application described in the present specification. Understand. The present invention can be implemented based on the contents disclosed in the present specification and the technical common knowledge in the field.

此處所揭示之黏著帶具備：PVC膜、及配置於該PVC膜之一個表面或兩個表面之黏著劑層。 The adhesive tape disclosed herein has a PVC film and an adhesive layer disposed on one surface or both surfaces of the PVC film.

<PVC膜> <PVC film>

上述PVC膜典型地藉由如下方式而獲得：利用公知之方法對含有特定成分之PVC組合物進行膜化。此處所謂PVC組合物，係指主成分(係指含有最多之成分，可為含有超過50重量%之成分)為PVC之組合物。若利用該PVC組合物，則可形成作為支持黏著劑層之基材(支持基材)而顯示出適宜之物性之PVC膜(典型地為包含軟質氯乙烯樹脂之膜)。PVC膜中之PVC之含量典型地為超過40重量%，通常設為50重量%以上較為適當。此處所揭示之技術可以上述PVC膜中之PVC之含量超過50重量%(典型地為55重量%以上、例如60重量%以上)之態樣而較佳地實施。 The above PVC film is typically obtained by subjecting a PVC composition containing a specific component to film formation by a known method. The term "PVC composition" as used herein refers to a composition in which a main component (which is a component containing the most, and which may be a component containing more than 50% by weight) is PVC. When the PVC composition is used, a PVC film (typically a film containing a soft vinyl chloride resin) which exhibits suitable physical properties as a substrate (support substrate) supporting the adhesive layer can be formed. The content of PVC in the PVC film is typically more than 40% by weight, and usually 50% by weight or more is suitable. The technique disclosed herein can be preferably carried out in such a manner that the content of PVC in the above PVC film exceeds 50% by weight (typically 55% by weight or more, for example, 60% by weight or more).

(PVC) (PVC)

構成上述PVC組合物之PVC可為以氯乙烯作為主單體(係指單體成分中之主成分，可為占單體成分之超過50重量%之單體)之各種聚合物。亦即，此處所謂PVC之概念除了氯乙烯之均聚物以外，亦包含氯乙烯與各種共聚單體之共聚物。作為上述共聚單體，可例示：偏二氯乙烯；乙烯、丙烯等烯烴(較佳為碳數2~4之烯烴)；丙烯酸、甲基丙烯酸(以下將丙烯酸及甲基丙烯酸總稱為「(甲基)丙烯酸」)、馬來酸、富馬酸等含有羧基之單體或其酸酐(馬來酸酐等)；(甲基)丙烯酸酯，例如(甲基)丙烯酸與碳數1~10左右之烷基醇或環烷基醇之酯；乙酸乙烯酯、丙酸乙烯酯等乙烯酯系單體；苯乙烯、經取代之苯乙烯(α-甲基苯乙烯等)、乙烯基甲苯等苯乙烯系單體；丙烯腈等。作為上述共聚物，較佳為氯乙烯之共聚比率為70重量%以上(較佳為90重量% 以上)者。藉由利用適當之方法(典型地為懸浮聚合法)使此種單體聚合而獲得PVC。 The PVC constituting the above PVC composition may be various polymers having vinyl chloride as a main monomer (referred to as a main component in the monomer component, and may be a monomer which accounts for more than 50% by weight of the monomer component). That is, the concept of PVC here includes a copolymer of vinyl chloride and various comonomers in addition to the homopolymer of vinyl chloride. The comonomer may, for example, be vinylidene chloride; an olefin such as ethylene or propylene (preferably an olefin having 2 to 4 carbon atoms); acrylic acid or methacrylic acid (hereinafter, acrylic acid and methacrylic acid are collectively referred to as "(A) a monomer containing a carboxyl group such as maleic acid or fumaric acid or an anhydride thereof (maleic anhydride or the like); a (meth)acrylic acid ester such as (meth)acrylic acid having a carbon number of about 1 to 10 Ester of alkyl alcohol or cycloalkyl alcohol; vinyl ester monomer such as vinyl acetate or vinyl propionate; styrene such as styrene, substituted styrene (α-methylstyrene, etc.), vinyl toluene, etc. Monomer; acrylonitrile and the like. The copolymer preferably has a copolymerization ratio of vinyl chloride of 70% by weight or more (preferably 90% by weight). Above). PVC is obtained by polymerizing such a monomer by a suitable method (typically suspension polymerization).

雖然並無特別限定，但PVC組合物中所含之PVC之平均聚合度例如可為大約600~1800左右。考慮到加工性(成形性)與強度之兼顧等，通常可較佳地採用上述平均聚合度處於大約800~1600(例如大約900~1500)左右之範圍之PVC。 Although not particularly limited, the average degree of polymerization of the PVC contained in the PVC composition may be, for example, about 600 to 1800. In view of the combination of workability (formability) and strength, etc., it is generally preferred to use PVC having an average degree of polymerization of about 800 to 1600 (e.g., about 900 to 1,500).

(塑化劑) (Plasticizer)

此處所揭示之技術中之PVC膜典型地含有塑化劑。作為塑化劑，可並無特別限定地使用已知顯示出PVC之塑化效果之各種材料。作為上述塑化劑之例，可列舉：苯甲酸酯(二醇苯甲酸酯等)、鄰苯二甲酸酯、對苯二甲酸酯、偏苯三甲酸酯、均苯四甲酸酯等芳香族羧酸酯；己二酸酯、癸二酸酯、壬二酸酯、馬來酸酯、檸檬酸酯(乙醯基檸檬酸三丁酯等)等脂肪族羧酸酯；多元羧酸與多元醇之聚酯；此外可列舉聚醚系聚酯、環氧系聚酯(環氧化大豆油或環氧化亞麻籽油等環氧化植物油、環氧化脂肪酸烷基酯等)、磷酸酯(磷酸三甲苯酯等)等，但並不限定於該等。塑化劑可單獨使用1種或組合使用2種以上。 The PVC film of the technology disclosed herein typically contains a plasticizer. As the plasticizer, various materials known to exhibit the plasticizing effect of PVC can be used without particular limitation. Examples of the plasticizer include benzoic acid ester (such as glycol benzoate), phthalic acid ester, terephthalic acid ester, trimellitate, and pyromellitic acid. An aromatic carboxylic acid ester such as an ester; an aliphatic carboxylic acid ester such as an adipate, a sebacate, a sebacate, a maleate or a citrate (such as tributyl citrate); a polyester of a carboxylic acid and a polyhydric alcohol; and a polyether type polyester, an epoxy type polyester (epoxidized vegetable oil, such as an epoxidized soybean oil or an epoxidized linseed oil, an epoxidized fatty acid alkyl ester, etc.), a phosphate ester. (such as tricresyl phosphate), etc., but it is not limited to these. The plasticizers may be used alone or in combination of two or more.

作為上述鄰苯二甲酸酯(鄰苯二甲酸酯系塑化劑)，例如可使用鄰苯二甲酸與碳數4~16(較佳為6~14、典型地為8~13)之烷基醇之二酯，作為適宜例，可列舉：鄰苯二甲酸二正辛酯、鄰苯二甲酸二(2-乙基己基)酯、鄰苯二甲酸二異壬酯、鄰苯二甲酸二異癸酯等。其中，較佳為鄰苯二甲酸二異壬酯。 As the phthalic acid ester (phthalate-based plasticizer), for example, phthalic acid and a carbon number of 4 to 16 (preferably 6 to 14, typically 8 to 13) can be used. The diester of an alkyl alcohol, as a suitable example, di-octyl phthalate, di(2-ethylhexyl) phthalate, diisodecyl phthalate, phthalic acid Diisodecyl ester and the like. Among them, diisodecyl phthalate is preferred.

作為上述對苯二甲酸酯(對苯二甲酸酯系塑化劑)，例如可使用對苯二甲酸與碳數4~16(較佳為6~14、典型地為8~13)之烷基醇之二酯，作為一適宜例，可列舉對苯二甲酸雙(2-乙基己基)酯。 As the terephthalate (terephthalate plasticizer), for example, terephthalic acid and a carbon number of 4 to 16 (preferably 6 to 14, typically 8 to 13) can be used. As a suitable example of the diester of an alkyl alcohol, bis(2-ethylhexyl)terephthalate is mentioned.

作為上述偏苯三甲酸酯(偏苯三甲酸酯系塑化劑)，例如可使用偏苯三甲酸與碳數6~14(典型地為8~12)之烷基醇之三酯，作為適宜 例，可列舉：偏苯三甲酸三正辛酯、偏苯三甲酸三(2-乙基己基)酯、偏苯三甲酸三異壬酯、偏苯三甲酸三正癸酯、偏苯三甲酸三異癸酯等。 As the trimellitate (p-benzoate-based plasticizer), for example, trimellitic acid and a triester of a carbon number of 6 to 14 (typically 8 to 12) can be used as a suitable one. For example, tri-n-octyl trimellitate, tris(2-ethylhexyl) trimellitic acid, triisodecyl trimellitate, tri-n-decyl trimellitate, trimellitic acid Triisodecyl ester and the like.

作為上述均苯四甲酸酯(均苯四甲酸酯系塑化劑)，例如可使用均苯四甲酸與碳數6~14(典型地為8~12)之烷基醇之四酯，作為適宜例，可列舉：均苯四甲酸四正辛酯、均苯四甲酸四(2-乙基己基)酯、均苯四甲酸四正癸酯等。 As the above-mentioned pyromellitic acid ester (perylene tetracarboxylate plasticizer), for example, tetraester of pyromellitic acid and an alkyl alcohol having 6 to 14 carbon atoms (typically 8 to 12) can be used. As a suitable example, tetra-n-octyl pyromellitate, tetrakis(2-ethylhexyl) pyromellitate, tetra-n-decyl pyromellitate, etc. are mentioned.

作為上述己二酸酯(己二酸酯系塑化劑)，例如可使用己二酸與碳數4~16(較佳為6~14、典型地為8~13)之烷基醇之二酯，作為適宜例，可列舉：己二酸二正辛酯、己二酸二(2-乙基己基)酯、己二酸二異壬酯等。 As the adipate (adipate plasticizer), for example, adipic acid and an alkyl alcohol having 4 to 16 carbon atoms (preferably 6 to 14, typically 8 to 13) can be used. Examples of suitable esters include di-n-octyl adipate, di(2-ethylhexyl) adipate, and diisononyl adipate.

作為上述聚酯(聚酯系塑化劑)，例如可使用由琥珀酸、己二酸、辛二酸、壬二酸、癸二酸、檸檬酸、鄰苯二甲酸、間苯二甲酸、對苯二甲酸、偏苯三甲酸等多元羧酸與(聚)乙二醇(此處所謂「(聚)乙二醇」，係總括地指代乙二醇及聚乙二醇之含義。以下相同)、(聚)丙二醇、(聚)丁二醇、(聚)己二醇、(聚)新戊二醇、聚乙烯醇等多元醇所得之聚酯化合物。作為上述多元羧酸，較佳為碳數4~12(典型地為6~10)之脂肪族二羧酸，作為適宜例，可列舉己二酸及癸二酸。特別是就通用性或價格之方面而言，較理想為己二酸。作為上述多元醇，較佳為碳數2~10之脂肪族二醇，作為適宜例，可列舉乙二醇、丁二醇(例如1,3-丁二醇、1,4-丁二醇)等。 As the polyester (polyester plasticizer), for example, succinic acid, adipic acid, suberic acid, sebacic acid, sebacic acid, citric acid, phthalic acid, isophthalic acid, and the like can be used. A polycarboxylic acid such as phthalic acid or trimellitic acid and (poly)ethylene glycol (herein referred to as "(poly)ethylene glycol" are collectively referred to as ethylene glycol and polyethylene glycol. A polyester compound obtained from a polyhydric alcohol such as (poly)propylene glycol, (poly)butylene glycol, (poly)hexanediol, (poly) neopentyl glycol, or polyvinyl alcohol. The polyvalent carboxylic acid is preferably an aliphatic dicarboxylic acid having 4 to 12 carbon atoms (typically 6 to 10), and examples of the polyvalent carboxylic acid include adipic acid and sebacic acid. In particular, adipic acid is preferred in terms of versatility or price. The polyhydric alcohol is preferably an aliphatic diol having 2 to 10 carbon atoms, and examples of the polyhydric alcohol include ethylene glycol and butylene glycol (for example, 1,3-butanediol and 1,4-butanediol). Wait.

PVC膜中之塑化劑之含量並無特別限定。塑化劑之含量例如可設為PVC膜之10重量%以上，就獲得更良好之塑化效果之觀點而言，較佳為設為15重量%以上。亦可將塑化劑之含量設為20重量%以上。又，塑化劑之含量例如可設為未達50重量%，就耐熱性(典型地為耐熱劣化性)等觀點而言，通常設為40重量%以下較為適當，較佳為設 為35重量%以下(例如30重量%以下)。 The content of the plasticizer in the PVC film is not particularly limited. The content of the plasticizer can be, for example, 10% by weight or more of the PVC film, and is preferably 15% by weight or more from the viewpoint of obtaining a more excellent plasticizing effect. The content of the plasticizer may be 20% by weight or more. In addition, the content of the plasticizer can be, for example, less than 50% by weight, and is usually 40% by weight or less from the viewpoint of heat resistance (typically heat deterioration resistance). It is 35% by weight or less (for example, 30% by weight or less).

雖然並無特別限定，但相對於100重量份PVC之塑化劑之使用量通常設為15~75重量份較為適當，較佳為設為20~60重量份，更佳為設為30~50重量份。 Although it is not particularly limited, the amount of the plasticizer used per 100 parts by weight of the PVC is usually 15 to 75 parts by weight, preferably 20 to 60 parts by weight, more preferably 30 to 50 parts by weight. Parts by weight.

雖然並無特別限定，但PVC膜中所含之塑化劑之量於將具備該PVC膜之PVC黏著帶之重量設為100重量%時，通常設為1重量%以上且未達30重量%較為適當。PVC膜中之塑化劑可因經時等而分子擴散於黏著劑層中，因此根據PVC黏著帶之構成，可能有因塑化劑偏集存在化而使黏著力等特性於低溫時等變得不均質之情況。藉由將相對於PVC黏著帶之重量之塑化劑之使用量(PVC黏著帶之塑化劑含有率)設為上述範圍內，存在適宜地兼顧良好之塑化效果與塑化劑之偏集存在化抑制之傾向。此處所揭示之技術可以PVC黏著帶之塑化劑含有率為5重量%以上且25重量%以下(5重量%以上且23重量%以下)之態樣而較佳地實施。 The amount of the plasticizer contained in the PVC film is usually 1% by weight or more and less than 30% by weight when the weight of the PVC adhesive tape having the PVC film is 100% by weight. More appropriate. The plasticizer in the PVC film may be molecularly diffused in the adhesive layer due to the passage of time or the like. Therefore, depending on the composition of the PVC adhesive tape, there may be a change in the adhesion property such as the plasticizer. The situation is not homogeneous. By using the amount of the plasticizer (the plasticizer content of the PVC adhesive tape) relative to the weight of the PVC adhesive tape within the above range, there is a suitable balance between a good plasticizing effect and a plasticizer. The tendency to exist inhibition. The technique disclosed herein can be preferably carried out in such a manner that the plasticizer content of the PVC adhesive tape is 5% by weight or more and 25% by weight or less (5% by weight or more and 23% by weight or less).

(彈性體) (elastomer)

於此處所揭示之技術之較佳之一態樣中，可使PVC膜含有彈性體。藉由使PVC膜含有彈性體，可抑制室溫(例如25℃左右)下之強度等特性或耐熱性(例如耐熱劣化性)之降低，且使低溫下之柔軟性提高。因此，藉由使用該PVC膜，可適宜地實現低溫拉伸斷裂伸長率較大之PVC黏著帶。使PVC膜含有彈性體亦對該PVC膜之強度提高有用。 In one preferred aspect of the techniques disclosed herein, the PVC film can be made to contain an elastomer. By including the elastomer in the PVC film, it is possible to suppress deterioration of properties such as strength at room temperature (for example, about 25 ° C) or heat resistance (for example, heat deterioration resistance), and to improve flexibility at low temperatures. Therefore, by using the PVC film, a PVC adhesive tape having a high tensile elongation at break at a low temperature can be suitably achieved. The inclusion of an elastomer in the PVC film is also useful for improving the strength of the PVC film.

作為彈性體，可利用公知之各種聚合物材料。作為此種彈性體之非限定例，可列舉：氯化聚乙烯(CPE)、乙烯-乙酸乙烯酯共聚物、氯乙烯-乙酸乙烯酯共聚物(例如乙酸乙烯酯含量為大約10重量%以上、典型地為大約10~25重量%之氯乙烯-乙酸乙烯酯共聚物)、(甲基)丙烯酸酯-丁二烯-苯乙烯共聚物(例如甲基丙烯酸甲酯-丁二烯-苯 乙烯共聚物)、丙烯腈-丁二烯-苯乙烯共聚物、丙烯腈-丁二烯共聚物、苯乙烯-丁二烯共聚物(典型地為苯乙烯-丁二烯嵌段共聚物，例如苯乙烯含量為大約35重量%以下、典型地為大約10~35重量%之苯乙烯-丁二烯嵌段共聚物)、苯乙烯-丁二烯-苯乙烯嵌段共聚物、氯磺化聚乙烯(CSM)、聚酯系熱塑性彈性體、熱塑性聚胺基甲酸酯、其他合成橡膠(異戊二烯橡膠、丁二烯橡膠等)、該等之複合物或改性物等。彈性體可單獨使用1種或組合使用2種以上。 As the elastomer, various known polymer materials can be used. Non-limiting examples of such an elastomer include chlorinated polyethylene (CPE), ethylene-vinyl acetate copolymer, and vinyl chloride-vinyl acetate copolymer (for example, the vinyl acetate content is about 10% by weight or more, Typically from about 10 to 25% by weight of a vinyl chloride-vinyl acetate copolymer), a (meth) acrylate-butadiene-styrene copolymer (for example methyl methacrylate-butadiene-benzene) Ethylene copolymer), acrylonitrile-butadiene-styrene copolymer, acrylonitrile-butadiene copolymer, styrene-butadiene copolymer (typically styrene-butadiene block copolymer, for example a styrene-butadiene block copolymer having a styrene content of about 35% by weight or less, typically about 10 to 35% by weight, a styrene-butadiene-styrene block copolymer, chlorosulfonation polymerization Ethylene (CSM), polyester-based thermoplastic elastomer, thermoplastic polyurethane, other synthetic rubber (isoprene rubber, butadiene rubber, etc.), composites or modified products thereof, and the like. The elastomer may be used alone or in combination of two or more.

於此處所揭示之技術中，作為PVC膜中所含有之彈性體，較佳為選擇與PVC相容性良好之材料。藉此，可使PVC膜及使用該PVC膜之PVC黏著帶之低溫特性有效地提高。就PVC黏著帶之外觀品質等觀點而言，上述彈性體較佳為以於PVC膜中實現良好之相容狀態之範圍內之組成(含量)而使用。上述相容狀態例如可藉由對PVC膜直接或於延伸(例如於行進方向上延伸至2倍左右)之狀態下觀察白濁之有無而掌握。 Among the techniques disclosed herein, as the elastomer contained in the PVC film, it is preferred to select a material which is compatible with PVC. Thereby, the low-temperature characteristics of the PVC film and the PVC adhesive tape using the PVC film can be effectively improved. From the viewpoint of the appearance quality of the PVC adhesive tape, etc., the above-mentioned elastomer is preferably used in a composition (content) within a range in which a good compatibility state is achieved in the PVC film. The above-described compatible state can be grasped, for example, by observing the presence or absence of white turbidity in a state in which the PVC film is directly or extended (for example, extended to about twice in the traveling direction).

於此處所揭示之技術中，作為可較佳地使用之彈性體之非限定例，可列舉：氯化聚乙烯(例如氯含量為大約25~50重量%、典型地為大約30~45重量%、較佳為大約35~45重量%之氯化聚乙烯)、(甲基)丙烯酸酯-丁二烯-苯乙烯共聚物、丙烯腈-丁二烯共聚物(例如丙烯腈含量為大約15~50重量%、典型地為大約25~45重量%、較佳為大約30~40重量%之丙烯腈-丁二烯共聚物)、乙烯-乙酸乙烯酯共聚物(例如乙酸乙烯酯含量為大約30~75重量%、典型地為大約40~70重量%、較佳為大約50~65重量%之乙烯-乙酸乙烯酯共聚物)等。 Among the techniques disclosed herein, as a non-limiting example of an elastomer which can be preferably used, chlorinated polyethylene (for example, a chlorine content of about 25 to 50% by weight, typically about 30 to 45% by weight) is exemplified. Preferably, it is about 35 to 45% by weight of chlorinated polyethylene), (meth) acrylate-butadiene-styrene copolymer, acrylonitrile-butadiene copolymer (for example, acrylonitrile content is about 15~) 50% by weight, typically about 25 to 45% by weight, preferably about 30 to 40% by weight of an acrylonitrile-butadiene copolymer), an ethylene-vinyl acetate copolymer (for example, a vinyl acetate content of about 30%) ~75% by weight, typically about 40 to 70% by weight, preferably about 50 to 65% by weight of ethylene-vinyl acetate copolymer) and the like.

PVC膜中之彈性體之含量並無特別限定，可以獲得所期望之效果之方式而設定。通常，將PVC膜中之彈性體之含量設為大約0.5重量%以上較為適當，就獲得更高之效果之觀點而言，較佳為設為大約1重量%以上。又，就上述相容性等觀點而言，PVC膜中之彈性體之含量 通常設為大約未達40重量%較為適當，較佳為大約35重量%以下，更佳為大約30重量%以下(例如大約25重量%以下)。就容易取得使用彈性體之效果與其他特性之平衡之觀點而言，此處所揭示之技術可以PVC膜中之彈性體之含量為大約1~20重量%(典型地為大約1~15重量%、較佳為大約1~10重量%、例如大約3~8重量%)之態樣而較佳地實施。 The content of the elastomer in the PVC film is not particularly limited, and can be set in such a manner that a desired effect can be obtained. In general, the content of the elastomer in the PVC film is preferably about 0.5% by weight or more, and from the viewpoint of obtaining a higher effect, it is preferably about 1% by weight or more. Further, in terms of the above compatibility and the like, the content of the elastomer in the PVC film It is usually set to be about 40% by weight or less, preferably about 35% by weight or less, more preferably about 30% by weight or less (for example, about 25% by weight or less). From the standpoint of easily obtaining a balance between the effect of using an elastomer and other characteristics, the technique disclosed herein may be such that the content of the elastomer in the PVC film is about 1 to 20% by weight (typically about 1 to 15% by weight, Preferably, it is preferably about 1 to 10% by weight, for example, about 3.8 to 8% by weight.

雖然並無特別限定，但相對於100重量份PVC之彈性體之含量通常設為大約1重量份以上較為適當，就獲得更高之效果之觀點而言，較佳為2重量份以上。又，就相容性等觀點而言，相對於100重量份PVC之彈性體之含量通常設為大約75重量份以下較為適當，較佳為大約55重量份以下(典型地為大約50重量份以下、例如大約45重量份以下)。於較佳之一態樣中，可將相對於100重量份PVC之彈性體之含量設為大約2~25重量份(例如大約5~20重量份)。 The content of the elastomer based on 100 parts by weight of the PVC is usually preferably about 1 part by weight or more, and from the viewpoint of obtaining a higher effect, it is preferably 2 parts by weight or more. Further, the content of the elastomer relative to 100 parts by weight of the PVC is usually about 75 parts by weight or less, preferably about 55 parts by weight or less (typically about 50 parts by weight or less) from the viewpoint of compatibility and the like. For example, about 45 parts by weight or less). In a preferred embodiment, the content of the elastomer relative to 100 parts by weight of the PVC may be set to be about 2 to 25 parts by weight (for example, about 5 to 20 parts by weight).

(脂肪酸金屬鹽) (fatty acid metal salt)

此處所揭示之技術中之PVC膜較佳為除了PVC及塑化劑以外，亦含有脂肪酸金屬鹽。PVC膜存在如下情況：於該PVC膜或PVC黏著帶之加工時、或該黏著帶之使用環境中，上述PVC膜中所含之PVC受到如熱、紫外線或剪切力等般之物理能量等，因以此為起因之化學反應等而變色，或者損及物理、機械或電氣特性。藉由於PVC膜中含有脂肪酸金屬鹽，該脂肪酸金屬鹽可作為防止或抑制上述化學反應之穩定劑而發揮功能。又，防止或抑制上述化學反應(典型地為氯化氫之脫離)可對PVC黏著帶之耐熱劣化性提高做出有利貢獻。 The PVC film of the technology disclosed herein preferably contains a fatty acid metal salt in addition to PVC and a plasticizer. The PVC film has the following conditions: in the processing of the PVC film or the PVC adhesive tape, or in the use environment of the adhesive tape, the PVC contained in the PVC film is subjected to physical energy such as heat, ultraviolet light or shearing force, etc. Discoloration due to chemical reactions such as this, or damage to physical, mechanical or electrical properties. Since the PVC film contains a fatty acid metal salt, the fatty acid metal salt functions as a stabilizer for preventing or suppressing the above chemical reaction. Further, preventing or suppressing the above chemical reaction (typically, the detachment of hydrogen chloride) can contribute to an improvement in heat deterioration resistance of the PVC adhesive tape.

作為脂肪酸金屬鹽，可單獨使用1種或組合使用2種以上可作為PVC膜之穩定劑而發揮功能之化合物。例如，構成脂肪酸金族鹽之脂肪酸可自月桂酸、蓖麻油酸、硬脂酸等碳數10~20(典型地為12~18)左右之飽和或不飽和之脂肪酸(可為羥基脂肪酸)中較佳地選擇。就 PVC膜之成形性或加工性等觀點而言，可較佳地使用硬脂酸金屬鹽。又，就PVC膜或PVC黏著帶之經時變化抑制或低溫下之柔軟性等觀點而言，可較佳地使用月桂酸金屬鹽。亦可將硬脂酸金屬鹽與月桂酸金屬鹽組合使用。於此情形時，月桂酸金屬鹽之使用量相對於硬脂酸金屬鹽之使用量之比並無特別限定，例如以重量基準計可設為大約0.1~10，通常設為大約0.2~5(例如大約0.5~2)較為適當。 As the fatty acid metal salt, one type or a combination of two or more types of compounds which can function as a stabilizer for a PVC film can be used. For example, the fatty acid constituting the fatty acid gold salt may be a saturated or unsaturated fatty acid (which may be a hydroxy fatty acid) having a carbon number of 10 to 20 (typically 12 to 18) such as lauric acid, ricinoleic acid or stearic acid. Preferably selected. on From the viewpoints of moldability and workability of the PVC film, a stearic acid metal salt can be preferably used. Further, the lauric acid metal salt can be preferably used from the viewpoint of suppressing the change of the PVC film or the PVC adhesive tape over time or the flexibility at a low temperature. A metal stearate can also be used in combination with a metal laurate. In this case, the ratio of the amount of the lauric acid metal salt to the amount of the stearic acid metal salt used is not particularly limited, and may be, for example, about 0.1 to 10 on a weight basis, and usually about 0.2 to 5 ( For example, about 0.5~2) is more appropriate.

作為構成脂肪酸金屬鹽之金屬，考慮到近年來對環境衛生之意識提高，可較佳地使用鉛以外之金屬(非鉛金屬)。若利用此處所揭示之技術，則可實現即便於如此般並未使用含鉛之穩定劑之態樣中亦顯示出良好之耐熱劣化性之PVC黏著帶。作為上述金屬，例如可選擇屬於週期表之1族、2族、12族、13族及14族(但Pb除外)之任一者之金屬元素，作為適宜例，可列舉Li、Na、Ca、Mg、Zn、Ba及Sn。作為上述脂肪酸金屬鹽，就成本或獲取容易性等觀點而言，可較佳地採用Ca鹽或Ba鹽。又，就PVC膜之成形性或加工性等觀點而言，可較佳地採用Zn鹽。於較佳之一態樣中，可將Ca鹽與Zn鹽組合使用。於此情形時，Zn鹽之使用量相對於Ca鹽之使用量之比並無特別限定，例如以重量基準計可設為大約0.1~10，通常設為大約0.2~5(例如大約0.5~2)較為適當。此處所揭示之技術例如可以按上述重量比含有硬脂酸Ca與月桂酸Zn之態樣、或按上述重量比含有硬脂酸Zn與月桂酸Ca之態樣而較佳地實施。再者，於容許使用脂肪酸Pb鹽之用途中，亦可於PVC膜中含有脂肪酸Pb鹽。 As a metal constituting a fatty acid metal salt, a metal other than lead (non-lead metal) can be preferably used in view of an increase in awareness of environmental hygiene in recent years. According to the technique disclosed herein, a PVC adhesive tape which exhibits excellent heat deterioration resistance even in the case where the lead-containing stabilizer is not used in this manner can be realized. As the metal, for example, a metal element belonging to any one of Group 1, Group 2, Group 12, Group 13, and Group 14 (except Pb) of the periodic table may be selected, and examples of the metal include Li, Na, and Ca. Mg, Zn, Ba and Sn. As the fatty acid metal salt, a Ca salt or a Ba salt can be preferably used from the viewpoints of cost, availability, and the like. Further, from the viewpoints of moldability and workability of the PVC film, etc., a Zn salt can be preferably used. In a preferred embodiment, a Ca salt can be used in combination with a Zn salt. In this case, the ratio of the amount of the Zn salt used to the amount of the Ca salt used is not particularly limited, and may be, for example, about 0.1 to 10 by weight, and usually about 0.2 to 5 (for example, about 0.5 to 2). ) is more appropriate. The technique disclosed herein can be preferably carried out, for example, in a state in which the above-mentioned weight ratio contains Ca or lauric acid Zn, or a weight ratio of Zn stearate to lauric acid Ca in the above weight ratio. Further, in the use of the fatty acid Pb salt, the fatty acid Pb salt may be contained in the PVC film.

脂肪酸金屬鹽之使用量並無特別限定。脂肪酸金屬鹽之使用量(於使用2種以上之情形時為該等之合計量)例如可設為PVC膜中之脂肪酸金屬鹽之含量成為大約0.01重量%以上之量，就獲得更高之效果之觀點而言，較佳為設為大約0.02重量%以上，更佳為設為大約0.05重量%以上。脂肪酸金屬鹽之含量之上限並無特別限制，通常設為PVC 膜之大約5重量%以下較為適當，就低溫下之柔軟性等觀點而言，較佳為設為大約3重量%以下，更佳為設為大約1重量%以下(典型地為大約0.5重量%以下、例如大約0.3重量%以下)。 The amount of the fatty acid metal salt used is not particularly limited. The amount of the fatty acid metal salt used (in the case where two or more kinds are used) is, for example, an amount of the fatty acid metal salt in the PVC film of about 0.01% by weight or more, thereby obtaining a higher effect. From the viewpoint of the above, it is preferably about 0.02% by weight or more, and more preferably about 0.05% by weight or more. The upper limit of the content of the fatty acid metal salt is not particularly limited and is usually set to PVC. The film is preferably about 5% by weight or less, and is preferably about 3% by weight or less, more preferably about 1% by weight or less (typically about 0.5% by weight) from the viewpoint of flexibility at a low temperature and the like. Hereinafter, for example, about 0.3% by weight or less).

(抗氧化劑) (Antioxidants)

於此處所揭示之技術中之PVC膜中，除了PVC及塑化劑以外，亦可含有抗氧化劑。藉由使PVC膜含有抗氧化劑，可使PVC黏著帶之耐熱性(典型地為耐熱劣化性)提高。 The PVC film in the technique disclosed herein may contain an antioxidant in addition to PVC and a plasticizer. By including the antioxidant in the PVC film, the heat resistance (typically heat deterioration resistance) of the PVC adhesive tape can be improved.

作為抗氧化劑，可並無特別限定地使用可發揮抗氧化功能之公知之材料。作為抗氧化劑之例，可列舉酚系抗氧化劑、磷系抗氧化劑、硫系抗氧化劑、胺系抗氧化劑等。抗氧化劑可單獨使用1種或組合使用2種以上。 As the antioxidant, a known material which exhibits an antioxidant function can be used without particular limitation. Examples of the antioxidant include a phenol-based antioxidant, a phosphorus-based antioxidant, a sulfur-based antioxidant, and an amine-based antioxidant. The antioxidant may be used alone or in combination of two or more.

作為抗氧化劑之適宜例，可列舉受阻酚系抗氧化劑等酚系抗氧化劑。作為受阻酚系抗氧化劑，例如可列舉：季戊四醇-四[3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯](商品名「Irganox 1010」，日本汽巴公司製造)、3-(3,5-二-第三丁基-4-羥基苯基)丙酸十八烷基酯(商品名「Irganox 1076」，日本汽巴公司製造)、4,6-雙(十二烷硫基甲基)-鄰甲酚(商品名「Irganox 1726」，日本汽巴公司製造)、三乙二醇-雙[3-(3-第三丁基-5-甲基-4-羥基苯基)丙酸酯](商品名「Irganox 245」，日本汽巴公司製造)、癸二酸雙(2,2,6,6-四甲基-4-哌啶基)酯(商品名「TINUVIN 770」，日本汽巴公司製造)、琥珀酸二甲酯與4-羥基-2,2,6,6-四甲基-1-哌啶乙醇之縮聚物(琥珀酸二甲酯-1-(2-羥基乙基)-4-羥基-2,2,6,6-四甲基哌啶縮聚物)(商品名「TINUVIN 622」，日本汽巴公司製造)等。其中，較佳為季戊四醇-四[3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯](商品名「Irganox 1010」，日本汽巴公司製造)、三乙二醇-雙[3-(3-第三丁基-5-甲基-4-羥基苯基)丙酸酯](商品名「Irganox 245」，日本汽巴公司製造)等。 A suitable example of the antioxidant is a phenolic antioxidant such as a hindered phenol-based antioxidant. Examples of the hindered phenol-based antioxidant include pentaerythritol-tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] (trade name "Irganox 1010", Japan Ciba Manufactured by the company, octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propanoate (trade name "Irganox 1076", manufactured by Ciba, Japan), 4,6- Bis(dodecylthiomethyl)-o-cresol (trade name "Irganox 1726", manufactured by Ciba, Japan), triethylene glycol-bis[3-(3-tert-butyl-5-methyl) -4-hydroxyphenyl)propionate] (trade name "Irganox 245", manufactured by Ciba, Japan), bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (trade name "TINUVIN 770", manufactured by Ciba, Japan), polycondensate of dimethyl succinate and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol (dimethyl succinate) Ester-1-(2-hydroxyethyl)-4-hydroxy-2,2,6,6-tetramethylpiperidine polycondensate) (trade name "TINUVIN 622", manufactured by Ciba Corporation of Japan). Among them, pentaerythritol-tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] (trade name "Irganox 1010", manufactured by Japan Ciba Corporation), and triethyl acetate are preferred. Glycol-bis[3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate] (trade name "Irganox 245", manufactured by Ciba Corporation of Japan).

抗氧化劑之使用量(於使用2種以上之情形時為該等之合計量)並無特別限定，例如可設為PVC膜中之抗氧化劑之含量成為大約0.001重量%以上之量。就獲得更高之效果之觀點而言，通常將PVC膜中之抗氧化劑之含量設為大約0.005重量%以上較為適當，較佳為設為大約0.01重量%以上，更佳為設為大約0.05重量%以上。於較佳之一態樣中，可將PVC膜中之抗氧化劑之含量設為大約0.1重量%以上，亦可設為大約0.5重量%以上，進而亦可設為大約1重量%以上(例如大約1.5重量%以上)。抗氧化劑之含量之上限並無特別限制，通常設為PVC膜之大約5重量%以下(典型地為大約3重量%以下)較為適當。 The amount of the antioxidant to be used (in the case where two or more kinds are used) is not particularly limited. For example, the content of the antioxidant in the PVC film may be about 0.001% by weight or more. From the viewpoint of obtaining a higher effect, the content of the antioxidant in the PVC film is usually suitably about 0.005% by weight or more, preferably about 0.01% by weight or more, more preferably about 0.05% by weight. %the above. In a preferred embodiment, the content of the antioxidant in the PVC film may be about 0.1% by weight or more, or may be about 0.5% by weight or more, and further may be about 1% by weight or more (for example, about 1.5). More than weight%). The upper limit of the content of the antioxidant is not particularly limited, and is usually about 5% by weight or less (typically about 3% by weight or less) of the PVC film.

於此處所揭示之技術中之PVC膜中，可於並不顯著妨礙本發明之效果之範圍內，視需要進而含有可於PVC膜(特別是PVC黏著帶用PVC膜)中使用之公知之添加劑。作為此種添加劑之例，可列舉：顏料或染料等著色劑、脂肪酸金屬鹽以外之穩定劑(例如月桂酸二辛基錫等有機錫化合物)、穩定化助劑(例如亞磷酸三烷基酯等亞磷酸酯、水滑石或沸石等無機化合物)、光穩定劑、紫外線吸收劑、改質劑、阻燃劑、抗靜電劑、防黴劑、潤滑劑等。該等添加劑之使用量可設為於PVC膜之領域中一般之量。此處所揭示之技術中之PVC膜較佳為不含如三羥甲基丙烷等般於分子內具有複數個聚合性官能基(例如(甲基)丙烯醯基)之化合物。其原因在於：如此般具有複數個聚合性官能基之化合物存在藉由氧化等進行聚合而發揮使PVC膜硬化之作用之情況，由此可能損及低溫特性。 In the PVC film of the technology disclosed herein, it is possible to further contain a known additive which can be used in a PVC film (especially a PVC film for PVC adhesive tape), as long as it does not significantly impair the effects of the present invention. . Examples of such an additive include a coloring agent such as a pigment or a dye, a stabilizer other than a fatty acid metal salt (for example, an organotin compound such as dioctyltin laurate), and a stabilizing auxiliary (for example, a trialkyl phosphite). An inorganic compound such as a phosphite, hydrotalcite or zeolite), a light stabilizer, an ultraviolet absorber, a modifier, a flame retardant, an antistatic agent, an antifungal agent, a lubricant, and the like. The amount of these additives used can be set to a general amount in the field of PVC film. The PVC film in the technique disclosed herein preferably does not contain a compound having a plurality of polymerizable functional groups (for example, (meth)acryl fluorenyl group) in the molecule, such as trimethylolpropane. The reason for this is that the compound having a plurality of polymerizable functional groups has a function of curing the PVC film by polymerization such as oxidation, and thus it is possible to impair the low-temperature characteristics.

此種組成之PVC膜典型地藉由如下方式而獲得：將具有對應組成之PVC組合物利用熱塑性樹脂膜之領域中公知之方法成形為膜形狀。作為此種公知之成形方法，例如可利用熔融擠出成形法(吹脹法(inflation method)、T模頭法等)、熔融流延法、壓延法等。此處所揭示之技術即便於上述PVC膜使用並未實施交聯劑之添加或活性能量線 之照射等刻意地提高該PVC膜整體之交聯性之處理者之態樣中亦可較佳地實施。若利用此種PVC膜，則存在獲得更低溫下之拉伸斷裂伸長率較大之PVC黏著帶之傾向。PVC膜之交聯程度可藉由將該PVC膜1g投入至四氫呋喃(THF)10mL中並進行攪拌，以目視觀察PVC膜溶解於THF中之情況而掌握，此時可將殘存對THF之不溶成分之PVC膜判斷為刻意地導入有交聯結構者。 A PVC film of such a composition is typically obtained by forming a PVC composition having a corresponding composition into a film shape by a method known in the art of a thermoplastic resin film. As such a known molding method, for example, a melt extrusion molding method (inflation method, T-die method, etc.), a melt casting method, a calendering method, or the like can be used. The technique disclosed herein does not implement the addition of a crosslinking agent or an active energy ray even if the above-mentioned PVC film is used. The aspect of the processor which deliberately improves the crosslinkability of the entire PVC film, such as irradiation, can also be preferably carried out. When such a PVC film is used, there is a tendency to obtain a PVC adhesive tape having a large tensile elongation at break at a lower temperature. The degree of crosslinking of the PVC film can be grasped by adding 1 g of the PVC film to 10 mL of tetrahydrofuran (THF) and visually observing that the PVC film is dissolved in THF. In this case, the insoluble component remaining in THF can be retained. The PVC film was judged to be intentionally introduced into a crosslinked structure.

作為一例，將使用壓延法之情形時的典型之膜製成順序之概要表示於以下。 As an example, a summary of a typical film formation sequence in the case of using a calendering method is shown below.

(1)計量：根據目標組成而計量PVC、塑化劑及視需要使用之其他材料。 (1) Measurement: PVC, plasticizer and other materials as needed are metered according to the target composition.

(2)混合：對所計量之各材料進行攪拌混合，製備均一之混合物(典型地為粉末狀之混合物、亦即混合粉末)。 (2) Mixing: Each of the materials measured is stirred and mixed to prepare a uniform mixture (typically a powdery mixture, that is, a mixed powder).

(3)混練：對上述(2)中所製備之混合物進行加熱而使其熔融化，利用2根或3根以上之混練輥(典型地為金屬製之輥)進行混練。混練輥之溫度例如設定為100℃~250℃(較佳為150℃~200℃)較為適當。 (3) Kneading: The mixture prepared in the above (2) is heated and melted, and kneaded by two or more kneading rolls (typically metal rolls). The temperature of the kneading roll is suitably set to, for example, 100 ° C to 250 ° C (preferably 150 ° C to 200 ° C).

(4)壓延成形：將上述(3)中所得之混練物投入至壓延成形機中，成形具有任意厚度之PVC膜。厚度之控制可藉由調整壓延輥之間距及/或輥間之速度比而進行。輥間之速度比可調整為較佳為1.0~1.5、更佳為1.1~1.4、例如1.2~1.3之範圍。 (4) Calendering: The kneaded product obtained in the above (3) was placed in a calender molding machine to form a PVC film having an arbitrary thickness. The thickness can be controlled by adjusting the distance between the calender rolls and/or the speed ratio between the rolls. The speed ratio between the rolls can be adjusted to preferably in the range of 1.0 to 1.5, more preferably 1.1 to 1.4, for example, 1.2 to 1.3.

上述PVC組合物(亦即構成PVC膜之樹脂材料)之動態黏度並無特別限定。就較薄之(例如厚度未達100μm、典型地為厚度80μm以下之)PVC膜之製造容易性之觀點而言，通常上述PVC組合物之動態黏度為大約4000Pa‧s以下(例如大約3500Pa‧s以下)較為有利。於較佳之一態樣中，上述PVC組合物之動態黏度可為大約3000Pa‧s以下(更佳為大約2800Pa‧s以下、例如大約2500Pa‧s以下)。若利用由顯示出此種動態黏度之PVC組合物而形成之PVC膜，則可適宜地實現-20 ℃下之拉伸斷裂伸長率較大之PVC黏著帶。上述PVC組合物之動態黏度例如可設為大約1000Pa‧s以上，就PVC膜之強度等觀點而言，通常設為大約1300Pa‧s以上(例如大約1500Pa‧s以上)較為適當。 The dynamic viscosity of the above PVC composition (that is, the resin material constituting the PVC film) is not particularly limited. In view of the ease of manufacture of a relatively thin (e.g., thickness less than 100 μm, typically less than 80 μm thick) PVC film, the dynamic viscosity of the above PVC composition is typically below about 4,000 Pa s (e.g., about 3,500 Pa ‧ s) The following) is more advantageous. In a preferred aspect, the PVC composition may have a dynamic viscosity of about 3,000 Pa ‧ or less (more preferably about 2800 Pa ‧ s or less, for example, about 2500 Pa ‧ s or less). If a PVC film formed from a PVC composition exhibiting such dynamic viscosity is used, it can be suitably achieved -20 PVC adhesive tape with a large tensile elongation at break under °C. The dynamic viscosity of the above-mentioned PVC composition can be, for example, about 1000 Pa·s or more, and is usually about 1300 Pa·s or more (for example, about 1,500 Pa·s or more) from the viewpoint of the strength of the PVC film and the like.

此處，所謂上述PVC組合物之動態黏度，係指利用下述實施例中所記載之手法而測定之動態黏度。上述動態黏度可藉由PVC組合物中所含之成分(PVC及視需要使用之塑化劑、彈性體及其他添加劑)之選擇及該等之調配比而調節。例如，藉由應用如下等方法之1種或2種以上而存在上述PVC組合物之動態黏度大體變低之傾向：使用平均聚合度更低之PVC；使用熔體流動速率(MFR)更小之彈性體；選擇與PVC之相容性更良好之彈性體；進一步增多塑化劑之使用量。 Here, the dynamic viscosity of the above-mentioned PVC composition means the dynamic viscosity measured by the method described in the following examples. The above dynamic viscosity can be adjusted by the choice of the components (PVC and optionally plasticizers, elastomers and other additives) contained in the PVC composition and the ratio of such blending. For example, there is a tendency that the dynamic viscosity of the PVC composition is generally lowered by applying one or more of the following methods: using a PVC having a lower average degree of polymerization; using a melt flow rate (MFR) is smaller. Elastomer; choose an elastomer that is more compatible with PVC; further increase the amount of plasticizer used.

於此處揭示之黏著帶中，上述PVC膜可構成包含該PVC膜之單層或多層之支持基材，亦可構成除了該PVC膜以外亦包含其他層之支持基材。於較佳之一態樣中，上述其他層可為設置於PVC膜之表面之印刷層、剝離處理層、底塗層等輔助性層。或者，上述PVC膜亦可構成該PVC膜與PVC膜以外之樹脂膜積層而成之構成之支持基材。作為較佳之一態樣，可列舉於包含單層之PVC膜之支持基材之單面配置有黏著劑層之構成。 In the adhesive tape disclosed herein, the PVC film may constitute a single or multiple layers of the support substrate including the PVC film, and may also constitute a support substrate including other layers in addition to the PVC film. In a preferred embodiment, the other layer may be an auxiliary layer such as a printing layer, a release treatment layer or an undercoat layer provided on the surface of the PVC film. Alternatively, the PVC film may constitute a support substrate in which the PVC film and a resin film other than the PVC film are laminated. As a preferable aspect, a structure in which an adhesive layer is disposed on one side of a support substrate including a single-layer PVC film can be cited.

於此處所揭示之技術中，支持基材之厚度並無特別限定。支持基材(例如包含單層之PVC膜之支持基材)之厚度典型地為大約500μm以下，通常為大約300μm以下，就PVC黏著帶之處理性等觀點而言，較佳為大約200μm以下，更佳為大約150μm以下(例如大約120μm以下)。此處所揭示之技術係以將較薄之PVC膜作為支持基材之態樣而實施，可適宜地發揮防止低溫下之龜裂之效果。若利用更薄之PVC膜，則存在可使利用該PVC膜而形成之PVC黏著帶進而變薄之傾向。藉此，可使利用上述PVC黏著帶而構成之構件(例如線束)之外形變小，而可節約該構件之設置空間。又，若利用更薄之PVC膜，則存在 可使利用該PVC膜而形成之PVC黏著帶之基重進而變小之傾向。藉此，可實現使用上述PVC黏著帶而構成之構件(例如線束)之輕量化。就該觀點而言，作為上述支持基材，可較佳地採用厚度為大約100μm以下(典型地為大約未達100μm、更佳為大約90μm以下、進而更佳為大約80μm以下)之PVC膜。上述支持基材亦可為厚度大約75μm以下之PVC膜。支持基材之厚度典型地為大約10μm以上、通常為大約25μm以上，就處理性或低溫下之龜裂防止性之觀點而言，較佳為大約50μm以上(例如大約60μm以上)。上述支持基材之厚度例如可較佳地應用於電線或配管等之保護或捆束、包圍電線等之周圍而進行保護之波紋管(corrugate tube)之被覆、束有複數根電線者(集束電線)之被覆、電絕緣等中所使用之黏著帶。 In the technique disclosed herein, the thickness of the support substrate is not particularly limited. The thickness of the support substrate (for example, a support substrate comprising a single layer of a PVC film) is typically about 500 μm or less, and usually about 300 μm or less, and is preferably about 200 μm or less from the viewpoint of rationality of the PVC adhesive tape. More preferably, it is about 150 μm or less (for example, about 120 μm or less). The technique disclosed herein is carried out by using a thin PVC film as a supporting substrate, and the effect of preventing cracking at a low temperature can be suitably exhibited. If a thinner PVC film is used, there is a tendency that the PVC adhesive tape formed by the PVC film can be made thinner. Thereby, the member formed by the above-mentioned PVC adhesive tape (for example, a wire harness) can be made smaller in shape, and the installation space of the member can be saved. Also, if a thinner PVC film is used, it exists The basis weight of the PVC adhesive tape formed by using the PVC film can be made smaller. Thereby, weight reduction of a member (for example, a wire harness) formed using the above-mentioned PVC adhesive tape can be achieved. From this point of view, as the support substrate, a PVC film having a thickness of about 100 μm or less (typically about less than 100 μm, more preferably about 90 μm or less, still more preferably about 80 μm or less) can be preferably used. The support substrate may also be a PVC film having a thickness of about 75 μm or less. The thickness of the support substrate is typically about 10 μm or more, and usually about 25 μm or more, and is preferably about 50 μm or more (for example, about 60 μm or more) from the viewpoint of handleability or crack prevention at low temperatures. The thickness of the support substrate can be preferably applied to, for example, a corrugate tube that protects or bundles electric wires or pipes, or a corrugate tube that protects the periphery of the electric wires, and the like, and bundles of wires (bundled wires) ) Adhesive tape used in coating, electrical insulation, etc.

於支持基材中之配置有黏著劑層之表面，亦可視需要實施電暈放電處理、電漿處理、紫外線照射處理、酸處理、鹼處理、下塗劑(底塗劑)之塗佈、抗靜電處理等先前公知之表面處理。此種表面處理可為用以提高基材與黏著劑層之密接性、換而言之用以提高黏著劑層於基材上之抓固性之處理。底塗劑之組成並無特別限定，可自公知者中適宜選擇。下塗層之厚度並無特別限制，通常較佳為大約0.01μm以上且大約1μm以下，更佳為大約0.1μm以上且大約1μm以下。 The surface of the supporting substrate disposed with the adhesive layer may also be subjected to corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, acid treatment, alkali treatment, coating of the undercoating agent (primer), antistatic Processing such as previously known surface treatments. Such a surface treatment may be a treatment for improving the adhesion between the substrate and the adhesive layer, in other words, for improving the grip of the adhesive layer on the substrate. The composition of the primer is not particularly limited and may be appropriately selected from those skilled in the art. The thickness of the undercoat layer is not particularly limited, and is usually preferably about 0.01 μm or more and about 1 μm or less, more preferably about 0.1 μm or more and about 1 μm or less.

僅於支持基材之一個表面配置黏著劑層之構成之PVC黏著帶中，於未配置黏著劑層之側之表面(背面)，亦可以印字性之提高、光反射性之降低、重疊貼附性之提高等為目的而對上述背面實施電暈放電處理、電漿處理、紫外線照射處理、酸處理、鹼處理等處理。又，於PVC黏著帶之背面，亦可視需要實施剝離處理或抗靜電處理等先前公知之表面處理。例如，藉由於基材之背面設置長鏈烷基系、聚矽氧系等之剝離處理層，可減輕捲繞為輥狀之形態之PVC黏著帶之解捲力。此處所揭示之PVC黏著帶即便於未對該PVC黏著帶之背面實施如上所 述之剝離處理之形態下亦可較佳地實施。 In the PVC adhesive tape in which the adhesive layer is disposed only on one surface of the support substrate, the surface (back surface) on the side where the adhesive layer is not disposed can also be improved in printability, reduced in light reflectivity, and overlapped. For the purpose of improving the properties, the back surface is subjected to a treatment such as corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, acid treatment, or alkali treatment. Further, on the back surface of the PVC adhesive tape, a previously known surface treatment such as a peeling treatment or an antistatic treatment may be performed as needed. For example, by providing a release-treated layer such as a long-chain alkyl group or a polyfluorene-based system on the back surface of the substrate, the unwinding force of the PVC adhesive tape wound in a roll form can be reduced. The PVC adhesive tape disclosed herein is not implemented as described above even on the back side of the PVC adhesive tape. It can also be preferably carried out in the form of the stripping treatment.

<黏著劑層> <Adhesive layer>

此處所揭示之技術中之黏著劑層典型地為包含具有如下性質之材料(黏著劑)之層：於室溫附近之溫度區域中呈現柔軟之固體(黏彈性體)之狀態，藉由壓力簡單地與被黏著體接著。此處所謂黏著劑如「C.A.Dahlquist,“Adhesion：Fundamental and Practice”,McLaren & Sons,(1966)P.143」中所定義般，一般而言可為具有滿足複拉伸彈性模數E*(1Hz)<107dyne/cm2之性質之材料(典型地為於25℃下具有上述性質之材料)。 The adhesive layer in the technique disclosed herein is typically a layer comprising a material (adhesive) having the property of presenting a soft solid (viscose elastomer) in a temperature region near room temperature, by simple pressure The ground is followed by the adherend. The term "adhesive" as defined in "CADahlquist, "Adhesion: Fundamental and Practice", McLaren & Sons, (1966) P.143" generally has a complex tensile modulus E* (1 Hz). A material having a property of <10 7 dyne/cm 2 (typically a material having the above properties at 25 ° C).

此處所揭示之技術中之黏著劑層可為由水分散型黏著劑組合物、水溶性黏著劑組合物、溶劑型黏著劑組合物、熱熔型黏著劑組合物、活性能量線硬化型黏著劑組合物等各種形態之黏著劑組合物而形成之黏著劑層。此處，所謂「活性能量線」，係指具有可引起聚合反應、交聯反應、起始劑之分解等化學反應之能量之能量線，係包含如紫外線、可見光線、紅外線般之光、或如α射線、β射線、γ射線、電子束、中子射線、X射線般之放射線等之概念。就抑制PVC膜中之塑化劑向黏著劑層轉移而容易抑制黏著力之經時變化等方面而言，較佳為由水分散型黏著劑組合物而形成之黏著劑層。 The adhesive layer in the technology disclosed herein may be a water-dispersible adhesive composition, a water-soluble adhesive composition, a solvent-based adhesive composition, a hot-melt adhesive composition, or an active energy ray-curable adhesive. An adhesive layer formed by various types of adhesive compositions such as a composition. Here, the "active energy ray" means an energy line having an energy which causes a chemical reaction such as a polymerization reaction, a crosslinking reaction, or decomposition of a starter, and includes ultraviolet light, visible light, infrared light, or Concepts such as alpha ray, beta ray, gamma ray, electron beam, neutron ray, X-ray radiation, and the like. The adhesive layer formed of the water-dispersible pressure-sensitive adhesive composition is preferred in terms of suppressing the transfer of the plasticizer in the PVC film to the adhesive layer and easily suppressing the temporal change of the adhesive force.

構成上述黏著劑層之黏著劑之種類並無特別限定。上述黏著劑可為含有於黏著劑之領域中公知之橡膠系聚合物、丙烯酸系聚合物、聚酯系聚合物、胺基甲酸酯系聚合物、聚醚系聚合物、聚矽氧系聚合物、聚醯胺系聚合物、氟系聚合物等各種橡膠狀聚合物之1種或2種以上作為基礎聚合物(聚合物成分中之主成分)者。此處，所謂橡膠系黏著劑，係指含有橡膠系聚合物作為基礎聚合物之黏著劑。關於丙烯酸系黏著劑及其他黏著劑亦同樣。又，所謂丙烯酸系聚合物，係指於聚合物結構中含有源自1分子中具有至少一個(甲基)丙烯醯基之單體(丙 烯酸系單體)之單體單元的聚合物，典型地係指以超過50重量%之比率含有源自丙烯酸系單體之單體單元之聚合物。再者，上述所謂(甲基)丙烯醯基，係總括地指代丙烯醯基及甲基丙烯醯基之含義。 The type of the adhesive constituting the above adhesive layer is not particularly limited. The above-mentioned adhesive may be a rubber-based polymer, an acrylic polymer, a polyester-based polymer, a urethane-based polymer, a polyether-based polymer, or a polyoxymethylene-based polymer which is known in the field of an adhesive. One or two or more kinds of various rubber-like polymers such as a polyamide polymer and a fluorine-based polymer are used as a base polymer (a main component in a polymer component). Here, the rubber-based adhesive refers to an adhesive containing a rubber-based polymer as a base polymer. The same applies to acrylic adhesives and other adhesives. Further, the term "acrylic polymer" means a monomer having at least one (meth)acrylonium group derived from one molecule in a polymer structure (C) The polymer of the monomer unit of the olefinic monomer is typically a polymer containing a monomer unit derived from an acrylic monomer in a ratio of more than 50% by weight. In addition, the above-mentioned (meth) propylene fluorenyl group means the meaning of an acryl fluorenyl group and a methacryl fluorenyl group collectively.

作為此處所揭示之PVC黏著帶之黏著劑層，就低溫特性及被黏著體選擇性之廣泛度之觀點而言，可較佳地採用以橡膠系黏著劑作為主成分之黏著劑層(橡膠系黏著劑層)。上述橡膠系黏著劑可為含有選自天然橡膠及合成橡膠之1種或2種以上之橡膠系聚合物者。再者，於本說明書中所謂「主成分」，於並未特別記載之情形時，係指含有最多之成分，典型地係指含有超過50重量%之成分。作為橡膠系聚合物，可使用天然橡膠及合成橡膠之任一者。作為天然橡膠，可並無特別限制地使用可於黏著劑組合物中使用之公知之材料。此處所謂天然橡膠，並不限定於未改性之天然橡膠，係包含例如藉由丙烯酸酯等進行改性而成之改性天然橡膠之概念。亦可將未改性天然橡膠與改性天然橡膠併用。作為合成橡膠，可並無特別限制地使用可於黏著劑組合物中使用之公知之材料。作為適宜例，可列舉苯乙烯-丁二烯橡膠(SBR)、苯乙烯-異戊二烯橡膠、氯丁二烯橡膠等。該等合成橡膠可為未改性，亦可經過改性(例如羧基改性)。橡膠系聚合物可單獨使用1種或組合使用2種以上。 As the adhesive layer of the PVC adhesive tape disclosed herein, an adhesive layer containing a rubber-based adhesive as a main component can be preferably used from the viewpoint of low-temperature characteristics and the degree of adhesion of the adherend (rubber system) Adhesive layer). The rubber-based pressure-sensitive adhesive may be one or two or more rubber-based polymers selected from the group consisting of natural rubber and synthetic rubber. In the present specification, the term "main component" means a component which contains the most components, and typically means a component containing more than 50% by weight, unless otherwise specified. As the rubber-based polymer, any of natural rubber and synthetic rubber can be used. As the natural rubber, a known material which can be used in the adhesive composition can be used without particular limitation. Here, the natural rubber is not limited to the unmodified natural rubber, and includes a concept of a modified natural rubber modified by, for example, acrylate or the like. Unmodified natural rubber can also be used in combination with modified natural rubber. As the synthetic rubber, a known material which can be used in the adhesive composition can be used without particular limitation. As a suitable example, a styrene-butadiene rubber (SBR), a styrene-isoprene rubber, a chloroprene rubber, etc. are mentioned. The synthetic rubbers may be unmodified or modified (eg, carboxyl modified). The rubber-based polymer may be used alone or in combination of two or more.

較佳之一態樣之PVC黏著帶具有由水分散型橡膠系黏著劑組合物而形成之橡膠系黏著劑層，上述水分散型橡膠系黏著劑組合物係於橡膠系乳膠中視需要調配黏著賦予樹脂及其他添加劑而成者。上述橡膠系乳膠可為公知之各種橡膠系聚合物分散於水中而成者。可使用天然橡膠乳膠及合成橡膠乳膠之任一者。作為天然橡膠乳膠，可並無特別限制地使用可於黏著劑組合物中使用之公知之材料。此處所謂天然橡膠乳膠，並不限定於未改性之天然橡膠乳膠，係包含例如藉由丙烯酸酯等進行改性而成之改性天然橡膠乳膠之概念。亦可將未改性天然橡 膠乳膠與改性天然橡膠乳膠併用。作為合成橡膠乳膠，可並無特別限制地使用可於黏著劑組合物中使用之公知之材料。作為適宜例，可列舉苯乙烯-丁二烯橡膠乳膠(SBR乳膠)、苯乙烯-異戊二烯橡膠乳膠、氯丁二烯橡膠乳膠等。該等合成橡膠乳膠中所含之合成橡膠可為未改性，亦可經過改性(例如羧基改性)。橡膠系乳膠可單獨使用1種或組合使用2種以上。 Preferably, the PVC adhesive tape has a rubber-based adhesive layer formed of a water-dispersible rubber-based adhesive composition, and the water-dispersible rubber-based adhesive composition is added to a rubber-based latex as needed. And other additives. The rubber-based latex may be one in which various rubber-based polymers are known to be dispersed in water. Any of natural rubber latex and synthetic rubber latex can be used. As the natural rubber latex, a known material which can be used in the adhesive composition can be used without particular limitation. Here, the natural rubber latex is not limited to the unmodified natural rubber latex, and includes a concept of a modified natural rubber latex modified by, for example, acrylate or the like. Unmodified natural oak Latex glue is used together with modified natural rubber latex. As the synthetic rubber latex, a known material which can be used in the adhesive composition can be used without particular limitation. As a suitable example, a styrene-butadiene rubber latex (SBR latex), a styrene-isoprene rubber latex, a chloroprene rubber latex, or the like can be given. The synthetic rubber contained in the synthetic rubber latex may be unmodified or modified (for example, carboxyl modified). The rubber latex may be used alone or in combination of two or more.

較佳之一態樣之橡膠系黏著劑組合物(例如水分散型橡膠系黏著劑組合物)含有天然橡膠及合成橡膠之兩者作為橡膠系聚合物。若利用此種黏著劑組合物，則可形成顯示出良好之黏著特性之PVC黏著帶。例如可形成顯示出適於電線、配管等之保護或捆束、如上所述之波紋管之被覆、電絕緣等用途的黏著特性之PVC黏著帶。作為天然橡膠與合成橡膠之重量比(天然橡膠：合成橡膠)，較佳為大約10：90~90：10之範圍，更佳為大約20：80~80：20之範圍，進而更佳為大約30：70~70：30之範圍。作為上述合成橡膠，可較佳地採用SBR。 A rubber-based pressure-sensitive adhesive composition (for example, a water-dispersible rubber-based pressure-sensitive adhesive composition) preferably contains both a natural rubber and a synthetic rubber as a rubber-based polymer. When such an adhesive composition is used, a PVC adhesive tape exhibiting good adhesive properties can be formed. For example, a PVC adhesive tape which exhibits adhesive properties suitable for protection or binding of electric wires, piping, etc., coating of bellows as described above, electrical insulation, and the like can be formed. The weight ratio of natural rubber to synthetic rubber (natural rubber: synthetic rubber) is preferably in the range of about 10:90 to 90:10, more preferably in the range of about 20:80 to 80:20, and even more preferably 30:70~70:30 range. As the above synthetic rubber, SBR can be preferably used.

此處所揭示之技術中之黏著劑層(典型地為橡膠系黏著劑層)除了如上所述之基礎聚合物以外，亦可含有黏著賦予樹脂。作為黏著賦予樹脂，可自公知之各種黏著賦予樹脂中選擇適當者而使用。例如可使用選自松香系樹脂、石油樹脂、萜烯系樹脂、酚系樹脂、薰草咔-茚系樹脂、酮樹脂等各種黏著賦予樹脂之1種或2種以上。 The adhesive layer (typically a rubber-based adhesive layer) in the technique disclosed herein may contain an adhesive-imparting resin in addition to the base polymer as described above. As the adhesion-imparting resin, any of various adhesion-imparting resins known to be used can be selected and used. For example, one type or two or more types of various adhesion-imparting resins, such as a rosin-based resin, a petroleum resin, a terpene-based resin, a phenol-based resin, a scented sputum-based resin, and a ketone resin, can be used.

作為松香系樹脂之例，可列舉：歧化松香、氫化松香、聚合松香、馬來松香(maleic rosin)、富馬松香(fumaric rosin)等松香衍生物、或酚改性松香、松香酯等。作為酚改性松香，例如可列舉：使酚類與天然松香或松香衍生物進行加成反應所得者、或使可溶酚醛型酚樹脂與天然松香或松香衍生物反應所得之酚改性松香等。作為松香酯，例如可列舉使上述松香系樹脂與多元醇反應而成之酯化物等。再者，亦可將松香酚樹脂製成酯化物。 Examples of the rosin-based resin include rosin derivatives such as disproportionated rosin, hydrogenated rosin, polymerized rosin, maleic rosin, and fumaric rosin, or phenol-modified rosin and rosin ester. Examples of the phenol-modified rosin include those obtained by subjecting a phenol to a natural rosin or a rosin derivative, or a phenol-modified rosin obtained by reacting a novolac type phenol resin with a natural rosin or a rosin derivative. . Examples of the rosin ester include an esterified product obtained by reacting the above rosin-based resin with a polyhydric alcohol. Further, the rosin phenol resin may be made into an esterified product.

作為萜烯系樹脂之例，可列舉：萜烯樹脂(α-蒎烯樹脂、β-蒎烯樹脂、檸檬烯樹脂等)、萜烯-酚樹脂、芳香族改性萜烯樹脂、氫化萜烯樹脂等。 Examples of the terpene-based resin include a terpene resin (α-pinene resin, β-pinene resin, limonene resin, etc.), a terpene-phenol resin, an aromatic modified terpene resin, and a hydrogenated terpene resin. Wait.

作為石油樹脂之例，可列舉：脂肪族系(C5系)石油樹脂、芳香族系(C9系)石油樹脂、脂肪族/芳香族共聚系(C5/C9系)石油樹脂、該等之氫化物(例如對芳香族系石油樹脂進行氫化所得之脂環族系石油樹脂)、該等之各種改性物(例如馬來酸酐改性物)等。 Examples of the petroleum resin include an aliphatic (C5-based) petroleum resin, an aromatic (C9-based) petroleum resin, an aliphatic/aromatic copolymer (C5/C9-based) petroleum resin, and the like. (for example, an alicyclic petroleum resin obtained by hydrogenating an aromatic petroleum resin), various modified products (for example, a maleic anhydride modified product), and the like.

作為酚系樹脂之例，可列舉苯酚、間甲酚、3,5-二甲苯酚、對烷基苯酚、間苯二酚等各種酚類與甲醛之縮合物。作為酚系樹脂之其他例，可列舉：使上述酚類與甲醛於鹼觸媒下進行加成反應所得之可溶酚醛樹脂、或使上述酚類與甲醛於酸觸媒下進行縮合反應所得之酚醛清漆等。 Examples of the phenol resin include condensates of various phenols such as phenol, m-cresol, 3,5-xylenol, p-alkylphenol, and resorcin, and formaldehyde. Other examples of the phenol resin include a resol resin obtained by subjecting the phenol and formaldehyde to an alkali catalyst, or a condensation reaction between the phenol and formaldehyde under an acid catalyst. Novolac and the like.

作為薰草咔-茚系樹脂之例，可列舉：薰草咔-茚樹脂、氫化薰草咔-茚樹脂、酚改性薰草咔-茚樹脂、環氧改性薰草咔-茚樹脂等。 Examples of the scented sputum-anthraquinone resin include: sorrel 茚-茚 resin, hydrogenated scented sputum- 茚 resin, phenol-modified scented scented enamel resin, epoxy modified scented scented enamel resin, etc. .

作為酮樹脂之例，可列舉藉由酮類(例如甲基乙基酮、甲基異丁基酮等脂肪族酮；苯乙酮等芳香族酮；環己酮、甲基環己酮等脂環式酮等)與甲醛之縮合而得之酮樹脂。 Examples of the ketone resin include ketones (e.g., aliphatic ketones such as methyl ethyl ketone and methyl isobutyl ketone; aromatic ketones such as acetophenone; and lipids such as cyclohexanone and methylcyclohexanone; A ketone resin obtained by condensation of a cyclic ketone or the like with formaldehyde.

所使用之黏著賦予樹脂之軟化溫度並無特別限定。例如可使用軟化點為60~160℃之黏著賦予樹脂。又，亦可使用常溫下為液狀之黏著賦予樹脂。就平衡良好地兼顧凝聚力與低溫特性(例如低溫下之解捲性或黏著力)之觀點而言，可較佳地使用軟化點為大約60~140℃(更佳為大約80~120℃)之黏著賦予樹脂。例如較佳為使用軟化點處於上述範圍之石油樹脂。再者，黏著賦予樹脂之軟化點可基於JIS K2207中所規定之軟化點試驗方法(環球法)而測定。 The softening temperature of the adhesive-imparting resin to be used is not particularly limited. For example, an adhesive which imparts a softening point of 60 to 160 ° C can be used. Further, it is also possible to use a resin which is liquid-like at normal temperature. From the viewpoint of well-balanced cohesion and low-temperature characteristics (for example, unwinding property or adhesion at a low temperature), it is preferred to use a softening point of about 60 to 140 ° C (more preferably about 80 to 120 ° C). Adhesive to the resin. For example, it is preferred to use a petroleum resin having a softening point in the above range. Further, the softening point of the adhesion-imparting resin can be measured based on the softening point test method (ring and ball method) prescribed in JIS K2207.

黏著劑層中所含之聚合物成分與黏著賦予樹脂之比率並無特別限定，可根據用途而適宜地決定。相對於100重量份聚合物成分之黏 著賦予樹脂之含量以不揮發成分基準計，例如可設為大約20重量份以上，通常設為大約50重量份以上較為適當。就獲得更高之使用效果之觀點而言，相對於100重量份聚合物成分之黏著賦予樹脂之使用量可設為大約80重量份以上，亦可設為大約100重量份以上。另一方面，就低溫特性等觀點而言，通常相對於100重量份聚合物成分之黏著賦予樹脂之使用量設為大約200重量份以下較為適當，較佳為設為大約150重量份以下。 The ratio of the polymer component and the adhesion-imparting resin contained in the pressure-sensitive adhesive layer is not particularly limited, and can be appropriately determined depending on the application. Stick to 100 parts by weight of polymer component The content of the resin to be added is, for example, about 20 parts by weight or more, and usually about 50 parts by weight or more, based on the nonvolatile content. The amount of the adhesion-imparting resin to be used with respect to 100 parts by weight of the polymer component can be set to about 80 parts by weight or more, or about 100 parts by weight or more, from the viewpoint of obtaining a higher use effect. On the other hand, the amount of the adhesion-imparting resin to be used is preferably about 200 parts by weight or less, and preferably about 150 parts by weight or less, based on 100 parts by weight of the polymer component.

此外，上述黏著劑層亦可視需要含有黏度調整劑(增黏劑等)、調平劑、塑化劑、軟化劑、填充劑、顏料或染料等著色劑、光穩定劑、抗老化劑、抗氧化劑、耐水化劑、抗靜電劑、發泡劑、消泡劑、界面活性劑、防腐劑、交聯劑等在黏著劑之領域中一般之各種添加劑。 In addition, the above adhesive layer may optionally contain a viscosity adjusting agent (tackifier, etc.), a leveling agent, a plasticizer, a softener, a filler, a pigment or a dye, a coloring agent, a light stabilizer, an anti-aging agent, and an anti-aging agent. An oxidizing agent, a water-resistant agent, an antistatic agent, a foaming agent, an antifoaming agent, a surfactant, a preservative, a crosslinking agent, and the like, and various additives generally in the field of an adhesive.

黏著劑層之形成可適宜採用先前公知之各種方法而進行。例如可採用藉由於如上所述之基材(典型地為PVC膜)上直接賦予(典型地為塗佈)黏著劑組合物並使其乾燥而形成黏著劑層之方法(直接法)。又，亦可採用藉由於具有剝離性之表面(剝離面)賦予黏著劑組合物並使其乾燥而於該表面上形成黏著劑層，並將該黏著劑層轉印至基材之方法(轉印法)。亦可將該等方法組合。作為上述剝離面，可利用剝離襯墊之表面、或經過剝離處理之支持基材背面等。 The formation of the adhesive layer can be suitably carried out by various methods known in the art. For example, a method (direct method) of forming an adhesive layer by directly imparting (typically coating) an adhesive composition on a substrate (typically a PVC film) as described above and drying it can be employed. Further, a method of forming an adhesive layer on the surface by applying a tacky surface (peeling surface) to the adhesive composition and drying the adhesive composition, and transferring the adhesive layer to the substrate may be employed. Indian law). These methods can also be combined. As the peeling surface, the surface of the release liner or the back surface of the support substrate subjected to the release treatment can be used.

黏著劑組合物之塗佈例如可使用凹版輥式塗佈機、逆輥塗佈機、接觸輥塗佈機、浸漬輥塗佈機、棒式塗佈機、刮刀塗佈機、噴塗機等公知或慣用之塗佈機而進行。黏著劑層典型地為連續地形成，根據目的及用途，亦可形成為點狀、條紋狀等規則或不規則之圖案。 For the application of the adhesive composition, for example, a gravure roll coater, a reverse roll coater, a contact roll coater, a dip roll coater, a bar coater, a knife coater, a spray coater, or the like can be used. Or a conventional coating machine. The adhesive layer is typically formed continuously, and may be formed into a regular or irregular pattern such as a dot or a stripe depending on the purpose and use.

於此處所揭示之技術中，黏著劑層之厚度並無特別限定，通常設為大約100μm以下(典型地為大約50μm以下)較為適當。就PVC黏著帶之薄化及輕量化之觀點而言，黏著劑層(典型地為橡膠系黏著劑層)之厚度例如可設為大約30μm以下，較佳為大約25μm以下，更佳 為大約20μm以下(典型地為大約未達20μm、例如大約18μm以下)。又，就獲得適當之黏著力之觀點而言，黏著劑層之厚度通常設為大約3μm以上較為適當，較佳為設為大約5μm以上(例如大約7μm以上)。 In the technique disclosed herein, the thickness of the adhesive layer is not particularly limited, but is usually set to be about 100 μm or less (typically about 50 μm or less). The thickness of the adhesive layer (typically a rubber-based adhesive layer) can be, for example, about 30 μm or less, preferably about 25 μm or less, from the viewpoint of thinning and weight reduction of the PVC adhesive tape. It is about 20 μm or less (typically about less than 20 μm, for example, about 18 μm or less). Further, from the viewpoint of obtaining an appropriate adhesive force, the thickness of the adhesive layer is usually preferably about 3 μm or more, and preferably about 5 μm or more (for example, about 7 μm or more).

此處所揭示之技術可以黏著劑層之厚度為大約5μm以上且未達20μm(典型地為大約7μm以上且18μm以下，更佳為大約10μm以上且15μm以下)之PVC黏著帶之形態而較佳地實施。上述黏著劑層之厚度之範圍例如可較佳地應用於電線、配管等之保護或捆束、如上所述之波紋管之被覆、電絕緣等中所使用之PVC黏著帶。其中，於支持基材之厚度為大約未達100μm(例如大約未達90μm)且被製備成下述黏著帶輥之形態之PVC黏著帶中，就解捲力之調整等觀點而言，將黏著劑層之厚度設為上述範圍較為有利。 The technique disclosed herein may preferably be in the form of a PVC adhesive tape having a thickness of the adhesive layer of about 5 μm or more and less than 20 μm (typically about 7 μm or more and 18 μm or less, more preferably about 10 μm or more and 15 μm or less). Implementation. The range of the thickness of the above-mentioned adhesive layer can be preferably applied, for example, to the protection or bundling of electric wires, pipes, and the like, the coating of the bellows as described above, electrical insulation, and the like. Wherein, in the PVC adhesive tape having a thickness of the support substrate of about less than 100 μm (for example, less than about 90 μm) and being prepared into the following adhesive tape roll, adhesion is made from the viewpoint of adjustment of the unwinding force and the like. It is advantageous that the thickness of the agent layer is in the above range.

<黏著帶> <adhesive tape>

將此處所揭示之黏著帶之一構成例表示於圖1中。圖1中所示之PVC黏著帶1係構成為單面黏著帶，其具備：具有第一面11A及第二面11B之支持基材(例如單層之PVC膜)11、及配置於該第一面11A上之黏著劑層21。於較佳之一態樣中，使用前(亦即，貼附於被黏著體之前)之黏著帶1例如可為如圖1所示般，藉由於長度方向捲繞而於支持基材之第二面11B抵接黏著劑層21，從而保護其表面(黏著面)21A之黏著帶輥之形態。或者亦可為藉由至少與黏著劑層21對向之側成為剝離面之剝離襯墊而保護黏著劑層21之表面21A之形態。作為剝離襯墊，可並無特別限定地使用公知或慣用者。例如可使用於塑膠膜或紙等基材之表面具有剝離處理層之剝離襯墊、或包含氟系聚合物(聚四氟乙烯等)或聚烯烴系樹脂(聚乙烯、聚丙烯等)之低接著性材料之剝離襯墊等。 An example of the constitution of the adhesive tape disclosed herein is shown in FIG. The PVC adhesive tape 1 shown in FIG. 1 is configured as a single-sided adhesive tape, comprising: a support substrate having a first surface 11A and a second surface 11B (for example, a single-layer PVC film) 11 and disposed on the first surface 11A Adhesive layer 21 on one side 11A. In a preferred embodiment, the adhesive tape 1 before use (that is, before being attached to the adherend) may be, for example, as shown in FIG. The surface 11B abuts against the adhesive layer 21, thereby protecting the surface of the adhesive tape of the surface (adhesive surface) 21A. Alternatively, the surface 21A of the adhesive layer 21 may be protected by a release liner which is a release surface on at least the side opposite to the adhesive layer 21. As the release liner, a known or customary person can be used without particular limitation. For example, it can be used for a release liner having a release treatment layer on a surface of a substrate such as a plastic film or paper, or a low fluorine-containing polymer (such as polytetrafluoroethylene) or a polyolefin resin (polyethylene, polypropylene, etc.). A release liner of a material, and the like.

將此處所揭示之黏著帶之其他構成例表示於圖2中。圖2中所示之黏著帶2係構成為雙面黏著帶，其於支持基材(例如單層之PVC膜)11之第一面11A及第二面11B上分別配置有第一黏著劑層21及第二黏著 劑層22。此處所揭示之技術亦可以此種雙面黏著帶之形態而較佳地實施。 Other constitutional examples of the adhesive tape disclosed herein are shown in Fig. 2. The adhesive tape 2 shown in FIG. 2 is configured as a double-sided adhesive tape, and a first adhesive layer is disposed on each of the first surface 11A and the second surface 11B of the support substrate (for example, a single-layer PVC film) 11. 21 and the second adhesion Agent layer 22. The technique disclosed herein can also be preferably implemented in the form of such a double-sided adhesive tape.

此處所揭示之黏著帶係藉由利用下述實施例中所記載之方法而測定之低溫拉伸斷裂伸長率(-20℃下之拉伸斷裂伸長率)為80%以上而賦予特徵。具有此種特性之PVC黏著帶即便於低溫下亦顯示出較高之柔軟性(伸張性)，因此可成為顯示出良好之低溫性能者。該PVC黏著帶例如於在線束中纏繞於電線之周圍之用途中，可發揮適宜地防止低溫下產生龜裂之性能。就獲得更高之低溫性能之觀點而言，較佳為上述低溫拉伸斷裂伸長率為大約100%以上(更佳為大約110%以上、例如大約120%以上)之PVC黏著帶。低溫拉伸斷裂伸長率之上限並無特別限制。就處理性之觀點而言，上述低溫拉伸斷裂伸長率通常為大約300%以下較為適當，較佳為大約200%以下(例如大約170%以下)。此處所揭示之技術例如可以上述低溫拉伸斷裂伸長率為大約100%~200%(較佳為110%~170%)之態樣而較佳地實施。 The adhesive tape disclosed herein is characterized in that the low-temperature tensile elongation at break (tensile elongation at break at -20 ° C) measured by the method described in the following examples is 80% or more. The PVC adhesive tape having such characteristics exhibits high flexibility (stretchability) even at low temperatures, and thus can be a person exhibiting good low temperature performance. The PVC adhesive tape is used, for example, in a wire bundle around a wire, and can exhibit a property of suitably preventing cracking at a low temperature. From the viewpoint of obtaining higher low-temperature properties, the above-mentioned low-temperature tensile elongation at break is preferably about 100% or more (more preferably about 110% or more, for example, about 120% or more) of the PVC adhesive tape. The upper limit of the low temperature tensile elongation at break is not particularly limited. From the viewpoint of handleability, the above-mentioned low-temperature tensile elongation at break is usually about 300% or less, preferably about 200% or less (for example, about 170% or less). The technique disclosed herein can be preferably carried out, for example, in the above-described low-temperature tensile elongation at break of about 100% to 200%, preferably 110% to 170%.

PVC黏著帶之總厚(支持基材與黏著劑層之合計厚度)並無特別限定。就PVC黏著帶之薄化及輕量化之觀點而言，此處所揭示之技術可以該PVC黏著帶之總厚為大約未達120μm(更佳為大約未達110μm、進而更佳為大約未達100μm、例如大約未達90μm)之態樣而較佳地實施。又，就低溫下之龜裂防止性之觀點而言，PVC黏著帶之厚度設為大約55μm以上較為適當，通常較佳為設為大約60μm以上(更佳為大約70μm以上、進而更佳為大約75μm以上、例如大約80μm以上)。 The total thickness of the PVC adhesive tape (the total thickness of the support substrate and the adhesive layer) is not particularly limited. In view of the thinning and weight reduction of the PVC adhesive tape, the technique disclosed herein may have a total thickness of the PVC adhesive tape of less than about 120 μm (more preferably about less than 110 μm, and even more preferably less than about 100 μm). It is preferably carried out, for example, in the form of about 90 μm. Moreover, the thickness of the PVC adhesive tape is preferably about 55 μm or more from the viewpoint of crack prevention at a low temperature, and is usually preferably about 60 μm or more (more preferably about 70 μm or more, and still more preferably about 75 μm or more, for example, about 80 μm or more).

雖然並無特別限定，但就PVC黏著帶之輕量化之觀點而言，此處所揭示之技術可以該PVC黏著帶之基重為大約120g/m2以下、較佳為大約110g/m2以下、更佳為大約100g/m2以下、例如大約90g/m2以下之態樣而較佳地實施。又，就低溫下之龜裂防止性之觀點而言，PVC黏著帶之基重設為大約55g/m2以上較為適當，通常較佳為設為大約 60g/m2以上(更佳為大約70g/m2以上、進而更佳為大約75g/m2以上、例如大約80g/m2以上)。 Although not particularly limited, the technique disclosed herein may have a basis weight of the PVC adhesive tape of about 120 g/m 2 or less, preferably about 110 g/m 2 or less, from the viewpoint of weight reduction of the PVC adhesive tape. More preferably, it is preferably about 100 g/m 2 or less, for example, about 90 g/m 2 or less. Further, from the viewpoint of crack prevention at a low temperature, the basis weight of the PVC adhesive tape is preferably about 55 g/m 2 or more, and usually it is preferably about 60 g/m 2 or more (more preferably about 70 g). /m 2 or more, and more preferably about 75 g/m 2 or more, for example, about 80 g/m 2 or more).

於此處所揭示之技術中，PVC黏著帶之寬度並無特別限定，可根據目的或用途而適宜設定。上述PVC黏著帶之寬度例如可為5mm~55mm、通常為10mm~40mm、較佳為15mm~30mm(典型地為15mm~25mm)。於此種寬度之PVC黏著帶中，可適宜地發揮應用本發明之效果。此處所揭示之技術可以將寬度約19mm之PVC黏著帶捲為輥狀而成之黏著帶輥之形態而較佳地實施。 In the technique disclosed herein, the width of the PVC adhesive tape is not particularly limited and may be appropriately set depending on the purpose or use. The width of the above-mentioned PVC adhesive tape may be, for example, 5 mm to 55 mm, usually 10 mm to 40 mm, preferably 15 mm to 30 mm (typically 15 mm to 25 mm). In the PVC adhesive tape of such a width, the effect of applying the present invention can be suitably exerted. The technique disclosed herein can be preferably carried out in the form of an adhesive tape roll in which a PVC adhesive tape having a width of about 19 mm is wound into a roll.

此處所揭示之黏著帶輥之直徑並無特別限定，就纏繞作業性之觀點而言，上述黏著帶輥之直徑並不過大較為有利。就該觀點而言，黏著帶輥之直徑通常設為20cm以下(典型地為5cm~20cm)較為適當。此處所揭示之技術可以直徑處於15cm以下(例如5cm~15cm)之範圍之黏著帶輥之形態而適宜地實施。 The diameter of the adhesive tape roll disclosed herein is not particularly limited, and the diameter of the above-mentioned adhesive tape roll is not particularly advantageous from the viewpoint of winding workability. From this point of view, the diameter of the adhesive tape roll is usually set to 20 cm or less (typically 5 cm to 20 cm). The technique disclosed herein can be suitably carried out in the form of an adhesive tape roll having a diameter of 15 cm or less (for example, 5 cm to 15 cm).

<用途> <Use>

此處所揭示之黏著帶由於低溫下之龜裂防止性優異，因此可於要求低溫性能之各種領域中使用。例如適於電線、配管等之保護或捆束、包圍電線等之周圍而進行保護之波紋管之被覆、電絕緣等用途。其中，作為較佳之用途，可列舉於線束(例如汽車及其他車輛之線束、特別是具備內燃機之車輛之線束等)中，纏繞於構成該線束之電線(典型地為複數根電線)之周圍之用途。此處，於構成線束之電線之周圍纏繞有PVC黏著帶之態樣之例中，包含於該電線之周圍纏繞有PVC黏著帶之態樣、或於收容有上述電線之筒(例如波紋管)之周圍纏繞有PVC黏著帶之態樣。又，此處所揭示之黏著帶並不限定於上述用途，亦可於先前以來使用PVC黏著帶之各種領域、例如電氣零件(變壓器、線圈等)、電子零件等之層間或外表面之絕緣、固定、顯示、識別等領域中適宜地使用。 The adhesive tape disclosed herein is excellent in crack prevention at low temperatures, and thus can be used in various fields requiring low temperature performance. For example, it is suitable for coating or electric insulation of a bellows for protecting or binding a wire or a pipe, surrounding a wire, and the like. Among them, as a preferable use, a wire harness (for example, a wire harness for an automobile or another vehicle, particularly a wire harness of a vehicle including an internal combustion engine) is wound around a wire (typically a plurality of wires) constituting the wire harness. use. Here, in the example in which the PVC adhesive tape is wound around the electric wire constituting the wire harness, the PVC adhesive tape is wound around the electric wire or the cylinder (for example, a bellows) in which the electric wire is accommodated. The PVC adhesive tape is wrapped around it. Moreover, the adhesive tape disclosed herein is not limited to the above-mentioned use, and may be insulated or fixed in various fields such as electrical parts (transformers, coils, etc.), electronic parts, and the like which have been used in the past. Suitable for use in fields such as display, recognition, and the like.

藉由該說明書而揭示之事項包括如下者。 The matters disclosed by this specification include the following.

(1)一種黏著帶，其包含：PVC膜、及配置於該PVC膜之至少一個表面之黏著劑層；且-20℃下之拉伸斷裂伸長率為80%以上(典型地為大約80%以上且大約300%以下)。 (1) An adhesive tape comprising: a PVC film; and an adhesive layer disposed on at least one surface of the PVC film; and a tensile elongation at break at -20 ° C of 80% or more (typically about 80%) Above and about 300% or less).

(2)如上述(1)之黏著帶，其中構成上述PVC膜之樹脂材料之動態黏度為大約3000Pa‧s以下(典型地為大約3000Pa‧s以下且大約1000Pa‧s以上)。 (2) The adhesive tape according to the above (1), wherein the resin material constituting the PVC film has a dynamic viscosity of about 3,000 Pa‧s or less (typically about 3,000 Pa·s or less and about 1,000 Pa·s or more).

(3)如上述(1)或(2)之黏著帶，其中上述PVC膜之厚度為大約100μm以下。 (3) The adhesive tape according to (1) or (2) above, wherein the thickness of the PVC film is about 100 μm or less.

(4)如上述(1)至(3)中任一項之黏著帶，其基重為大約100g/m2以下。 (4) The adhesive tape according to any one of the above (1) to (3), which has a basis weight of about 100 g/m 2 or less.

(5)如上述(1)至(4)中任一項之黏著帶，其中上述PVC膜包含彈性體。 (5) The adhesive tape according to any one of the above (1) to (4) wherein the above-mentioned PVC film contains an elastomer.

(6)如上述(5)之黏著帶，其中上述彈性體包含選自如下化合物之1種或2種以上：(A)氯含量為大約25~50重量%(例如大約35~45重量%)之氯化聚乙烯、(B)(甲基)丙烯酸酯-丁二烯-苯乙烯共聚物、(C)丙烯腈含量為大約15~50重量%(例如大約30~40重量%)之丙烯腈-丁二烯共聚物、及(D)乙酸乙烯酯含量為大約30~75重量%(例如大約50~65重量%)之乙烯-乙酸乙烯酯共聚物。 (6) The adhesive tape according to the above (5), wherein the elastomer comprises one or more selected from the group consisting of: (A) a chlorine content of about 25 to 50% by weight (for example, about 35 to 45% by weight) Chlorinated polyethylene, (B) (meth) acrylate-butadiene-styrene copolymer, (C) acrylonitrile having an acrylonitrile content of about 15 to 50% by weight (for example, about 30 to 40% by weight) a butadiene copolymer, and (D) an ethylene-vinyl acetate copolymer having a vinyl acetate content of about 30 to 75% by weight (e.g., about 50 to 65% by weight).

(7)如上述(5)或(6)之黏著帶，其中上述PVC膜中之上述彈性體之含量為大約1重量%以上且大約30重量%以下。 (7) The adhesive tape according to the above (5) or (6), wherein the content of the above elastomer in the PVC film is about 1% by weight or more and about 30% by weight or less.

(8)如上述(1)至(7)中任一項之黏著帶，其中上述PVC膜包含大約 10重量%以上且大約60重量%以下之塑化劑。 (8) The adhesive tape according to any one of (1) to (7) above, wherein the above-mentioned PVC film contains approximately 10% by weight or more and about 60% by weight or less of a plasticizer.

(9)如上述(8)之黏著帶，其中上述塑化劑包含選自苯甲酸酯、鄰苯二甲酸酯、對苯二甲酸酯、偏苯三甲酸酯、均苯四甲酸酯、己二酸酯、癸二酸酯、壬二酸酯、馬來酸酯及檸檬酸酯之1種或2種以上。 (9) The adhesive tape according to the above (8), wherein the plasticizer comprises a benzoic acid ester, a phthalic acid ester, a terephthalic acid ester, a trimellitic acid ester, and a pyromellitic acid. One or two or more kinds of esters, adipates, sebacates, sebacates, maleates, and citrates.

(10)如上述(1)至(9)中任一項之黏著帶，其中上述PVC膜包含脂肪酸金屬鹽。 (10) The adhesive tape according to any one of the above (1) to (9) wherein the above-mentioned PVC film contains a fatty acid metal salt.

(11)如上述(10)之黏著帶，其中上述脂肪酸金屬鹽為硬脂酸金屬鹽、月桂酸金屬鹽、或硬脂酸金屬鹽與月桂酸金屬鹽之組合。 (11) The adhesive tape according to the above (10), wherein the fatty acid metal salt is a metal stearate, a metal laurate, or a combination of a metal stearate and a metal laurate.

(12)如上述(10)或(11)之黏著帶，其中上述PVC膜中之上述脂肪酸金屬鹽之含量為大約0.02重量%以上且大約1重量%以下。 (12) The adhesive tape according to (10) or (11) above, wherein the content of the fatty acid metal salt in the PVC film is about 0.02% by weight or more and about 1% by weight or less.

(13)如上述(1)至(12)中任一項之黏著帶，其中構成上述黏著劑層之黏著劑係選自橡膠系黏著劑、聚酯系黏著劑、胺基甲酸酯系黏著劑、聚醚系黏著劑及聚矽氧系黏著劑。 (13) The adhesive tape according to any one of (1) to (12) above, wherein the adhesive constituting the adhesive layer is selected from the group consisting of a rubber-based adhesive, a polyester-based adhesive, and a urethane-based adhesive. Agent, polyether adhesive and polyoxygenated adhesive.

(14)如上述(1)至(13)中任一項之黏著帶，其中上述黏著劑層係以橡膠系黏著劑作為主成分之橡膠系黏著劑層。 (14) The adhesive tape according to any one of the above (1), wherein the adhesive layer is a rubber-based adhesive layer containing a rubber-based adhesive as a main component.

(15)如上述(1)至(14)中任一項之黏著帶，其中上述黏著劑層係以10：90~90：10之重量比含有天然橡膠與合成橡膠(例如SBR)。 (15) The adhesive tape according to any one of the above (1) to (14) wherein the adhesive layer contains natural rubber and synthetic rubber (for example, SBR) in a weight ratio of 10:90 to 90:10.

(16)如上述(1)至(15)中任一項之黏著帶，其中上述黏著劑層包含選自松香系樹脂、石油樹脂、萜烯系樹脂、酚系樹脂、薰草咔-茚系樹脂及酮樹脂之1種或2種以上之黏著賦予樹脂。 The adhesive tape according to any one of the above-mentioned (1), wherein the adhesive layer comprises a rosin-based resin, a petroleum resin, a terpene-based resin, a phenol-based resin, and a scented scent One or two or more types of adhesion of the resin and the ketone resin to the resin.

(17)如上述(1)至(16)中任一項之黏著帶，其中上述黏著劑層含有橡膠系聚合物、及作為黏著賦予樹脂之石油樹脂，上述石油樹脂之含量相對於上述橡膠系聚合物100重量份為50~150重量份。 The adhesive tape according to any one of the above-mentioned (1), wherein the adhesive layer contains a rubber-based polymer and a petroleum resin as an adhesion-imparting resin, and the content of the petroleum resin is relative to the rubber system. The polymer is 50 to 150 parts by weight in 100 parts by weight.

(18)一種黏著帶，其係包含PVC膜、及配置於該PVC膜之至少一個表面之黏著劑層者， 上述PVC膜之厚度為大約50μm以上且大約100μm以下(例如大約50μm以上且大約80μm以下)，上述PVC膜與上述黏著劑層之合計厚度為大約60μm以上且大約120μm以下(較佳為大約60μm以上且大約未達100μm、例如大約60μm以上且大約未達90μm)，上述PVC膜含有彈性體、塑化劑、及脂肪酸金屬鹽，上述彈性體包含選自如下化合物之1種或2種以上：(A)氯含量為大約25~50重量%(例如大約35~45重量%)之氯化聚乙烯、(B)(甲基)丙烯酸酯-丁二烯-苯乙烯共聚物、(C)丙烯腈含量為大約15~50重量%(例如大約30~40重量%)之丙烯腈-丁二烯共聚物、及(D)乙酸乙烯酯含量為大約30~75重量%(例如大約50~65重量%)之乙烯-乙酸乙烯酯共聚物，上述彈性體之含量為上述PVC膜之大約1重量%以上且大約30重量%以下，上述黏著劑層為橡膠系黏著劑層。 (18) An adhesive tape comprising a PVC film and an adhesive layer disposed on at least one surface of the PVC film, The thickness of the PVC film is about 50 μm or more and about 100 μm or less (for example, about 50 μm or more and about 80 μm or less), and the total thickness of the PVC film and the adhesive layer is about 60 μm or more and about 120 μm or less (preferably about 60 μm or more). And the PVC film contains an elastomer, a plasticizer, and a fatty acid metal salt, and the elastomer contains one or more selected from the group consisting of: (approximately 100 μm, for example, about 60 μm or more and about 90 μm or less): A) chlorinated polyethylene having a chlorine content of about 25 to 50% by weight (for example, about 35 to 45% by weight), (B) (meth) acrylate-butadiene-styrene copolymer, (C) acrylonitrile The content is about 15 to 50% by weight (for example, about 30 to 40% by weight) of the acrylonitrile-butadiene copolymer, and (D) the vinyl acetate content is about 30 to 75% by weight (for example, about 50 to 65% by weight). The ethylene-vinyl acetate copolymer, wherein the content of the elastomer is about 1% by weight or more and about 30% by weight or less of the PVC film, and the pressure-sensitive adhesive layer is a rubber-based pressure-sensitive adhesive layer.

(19)如上述(18)之黏著帶，其中上述塑化劑包含選自苯甲酸酯、鄰苯二甲酸酯、對苯二甲酸酯、偏苯三甲酸酯、均苯四甲酸酯、己二酸酯、癸二酸酯、壬二酸酯、馬來酸酯及檸檬酸酯之1種或2種以上。 (19) The adhesive tape according to the above (18), wherein the plasticizer comprises a benzoic acid ester, a phthalic acid ester, a terephthalic acid ester, a trimellitic acid ester, and a pyromellitic acid. One or two or more kinds of esters, adipates, sebacates, sebacates, maleates, and citrates.

(20)如上述(18)或(19)之黏著帶，其中上述脂肪酸金屬鹽為硬脂酸金屬鹽、月桂酸金屬鹽、或硬脂酸金屬鹽與月桂酸金屬鹽之組合，上述PVC膜中之上述脂肪酸金屬鹽之含量為大約0.02重量%以上且大約1重量%以下。 (20) The adhesive tape according to the above (18) or (19), wherein the fatty acid metal salt is a metal salt of stearic acid, a metal laurate, or a combination of a metal salt of stearic acid and a metal laurate, the above PVC film The content of the above fatty acid metal salt is about 0.02% by weight or more and about 1% by weight or less.

(21)如上述(18)至(20)中任一項之黏著帶，其中上述橡膠系黏著劑層含有橡膠系聚合物與黏著賦予樹脂，上述橡膠系聚合物係以10：90~90：10之重量比包含天然橡膠與合成橡膠(例如SBR)， 作為上述黏著賦予樹脂，含有相對於上述橡膠系聚合物100重量份為50~150重量份之石油樹脂。 The adhesive tape according to any one of the above-mentioned (18), wherein the rubber-based adhesive layer contains a rubber-based polymer and an adhesive-imparting resin, and the rubber-based polymer is 10:90 to 90: The weight ratio of 10 contains natural rubber and synthetic rubber (such as SBR), The adhesion-imparting resin contains 50 to 150 parts by weight of a petroleum resin based on 100 parts by weight of the rubber-based polymer.

(22)如上述(18)至(21)中任一項之黏著帶，其-20℃下之拉伸斷裂伸長率為大約80%以上(典型地為大約80%以上且大約300%以下)。 (22) The adhesive tape according to any one of the above (18) to (21), which has a tensile elongation at break at -20 ° C of about 80% or more (typically about 80% or more and about 300% or less) .

(23)一種線束，其包含電線、及纏繞於該電線之周圍之如上述(1)至(22)中任一項之黏著帶。 (23) A wire harness comprising an electric wire, and an adhesive tape according to any one of the above (1) to (22) wound around the electric wire.

[實施例] [Examples]

以下，對關於本發明之若干實施例加以說明，但並非意欲將本發明限定於該具體例所示者。再者，以下說明中之「份」及「%」只要無特別說明，則為重量基準。 In the following, some embodiments of the invention are described, but the invention is not intended to be limited to the specific examples. In addition, the "parts" and "%" in the following description are the weight basis unless otherwise specified.

<使用材料> <Use materials>

於以下之實施例中所使用之材料之略號如下所示。 The abbreviations of the materials used in the following examples are as follows.

(脂肪酸金屬鹽) (fatty acid metal salt)

A1：硬脂酸鈣(岸田化學股份有限公司製品) A1: Calcium stearate (product of Kishida Chemical Co., Ltd.)

A2：月桂酸鈣(岸田化學股份有限公司製品) A2: calcium laurate (product of Kishida Chemical Co., Ltd.)

(塑化劑) (Plasticizer)

B1：鄰苯二甲酸二異壬酯(J-plus股份有限公司製品，商品名「DINP」) B1: Diisodecyl phthalate (product of J-plus Co., Ltd., trade name "DINP")

B2：對苯二甲酸雙(2-乙基己基)酯(J-plus股份有限公司製品，商品名「DOTP」) B2: bis(2-ethylhexyl) terephthalate (product of J-plus Co., Ltd., trade name "DOTP")

(彈性體) (elastomer)

E1：Kaneka股份有限公司製品，(甲基)丙烯酸酯-丁二烯-苯乙烯共聚物，商品名「Kane Ace B22」 E1: Kaneka Co., Ltd. product, (meth) acrylate-butadiene-styrene copolymer, trade name "Kane Ace B22"

E2：日本瑞翁股份有限公司製品，丙烯腈-丁二烯共聚物，丙烯腈含量為31~36%，商品名「Nipol 1052J」 E2: Japan Reynolds Co., Ltd. product, acrylonitrile-butadiene copolymer, acrylonitrile content of 31~36%, trade name "Nipol 1052J"

E3：JSR股份有限公司製品，丙烯腈-丁二烯共聚物，丙烯腈含 量為41.5%，等級名「PN20HA」 E3: JSR Co., Ltd. products, acrylonitrile-butadiene copolymer, acrylonitrile The quantity is 41.5% and the grade name is "PN20HA"

E4：日本合成化學工業股份有限公司製品，乙烯-乙酸乙烯酯共聚物，乙酸乙烯酯含有率為55%，商品名「Soarblen BH」 E4: Product of Japan Synthetic Chemical Industry Co., Ltd., ethylene-vinyl acetate copolymer, vinyl acetate content of 55%, trade name "Soarblen BH"

E5：昭和電工股份有限公司製品，氯化聚乙烯，氯含量為38.0~41.0%，商品名「Elaslen 401A」 E5: Showa Denko Co., Ltd. product, chlorinated polyethylene, chlorine content of 38.0~41.0%, trade name "Elaslen 401A"

E6：Kaneka股份有限公司製品，氯乙烯-乙酸乙烯酯共聚物，乙酸乙烯酯含量為5%，商品名「Kanevinyl M1008」 E6: Kaneka Co., Ltd. product, vinyl chloride-vinyl acetate copolymer, vinyl acetate content of 5%, trade name "Kanevinyl M1008"

E7：JSR股份有限公司製品，苯乙烯-丁二烯嵌段共聚物，線性結構，苯乙烯含量為40%，等級名「TR2000」 E7: JSR Co., Ltd. product, styrene-butadiene block copolymer, linear structure, styrene content 40%, grade name "TR2000"

<黏著帶之製作> <Production of Adhesive Tape>

(實施例1) (Example 1)

以固形物成分基準將SBR乳膠(日本瑞翁股份有限公司製品，商品名「Nipol LX426」)60份、天然橡膠乳膠(GOLDEN HOPE公司製品，商品名「HYTEX HA」)40份及石油樹脂乳液120份加以混合而製備水分散型橡膠系黏著劑組合物。作為上述石油樹脂乳液，使用將石油樹脂(Exxon公司製品，脂肪族系烴樹脂，商品名「Escorez 1202」，軟化點為100℃)75份溶解於甲苯25份中，並於其中加入界面活性劑(花王股份有限公司製品，商品名「EMULGEN 920」)3.5份及水46.5份，藉由均質攪拌機進行攪拌乳化而成者。以下，將上述黏著劑組合物表記為「黏著劑組合物A」。 60 parts of SBR latex (product of Japan Reion Co., Ltd., trade name "Nipol LX426"), 40 parts of natural rubber latex (product of GOLDEN HOPE Co., Ltd., trade name "HYTEX HA"), and petroleum resin emulsion 120 based on the solid content. The mixture was mixed to prepare a water-dispersible rubber-based pressure-sensitive adhesive composition. As the petroleum resin emulsion, 75 parts of petroleum resin (product of Exxon, aliphatic hydrocarbon resin, trade name "Escorez 1202", softening point of 100 ° C) was dissolved in 25 parts of toluene, and a surfactant was added thereto. (King Co., Ltd. product, trade name "EMULGEN 920") 3.5 parts and 46.5 parts of water were stirred and emulsified by a homomixer. Hereinafter, the above adhesive composition is referred to as "adhesive composition A".

將表1中所示之各原料以成為表1中所示之組成(亦即，以0.10%之比率含有脂肪酸金屬鹽A1、以25%之比率含有塑化劑B1、以6%之比率含有彈性體E1、剩餘部分為PVC之組成)之方式計量並加以混合，進行混練後，藉由壓延成形機於成形溫度150℃下成形為厚度為70μm之長條之膜形狀。以此方式獲得例1之PVC膜(支持基材)。此處，作為表1中所示之PVC，使用平均聚合度為1000之聚氯乙烯(信越化學股份 有限公司製品，商品名「TK-1000」)。 Each of the raw materials shown in Table 1 was made into the composition shown in Table 1 (that is, the fatty acid metal salt A1 was contained in a ratio of 0.10%, and the plasticizer B1 was contained in a ratio of 25%, and contained in a ratio of 6%. The elastomer E1 and the remainder of the composition of PVC were measured and mixed, and after kneading, they were formed into a long film shape having a thickness of 70 μm at a molding temperature of 150 ° C by a calender molding machine. The PVC film (support substrate) of Example 1 was obtained in this manner. Here, as the PVC shown in Table 1, a polyvinyl chloride having an average degree of polymerization of 1000 (Shin-Etsu Chemical Co., Ltd.) was used. Co., Ltd. product, the trade name "TK-1000").

使用缺角輪直接塗佈機(comma direct coater)，於上述PVC膜之一個表面塗佈上述黏著劑組合物A，並使其乾燥，為了進行下述低溫纏繞試驗而以充分之長度進行捲取。黏著劑組合物A之塗佈量係以乾燥後形成表1中所示厚度之黏著劑層之方式進行調整。將其切斷為19mm之寬度(切割成長條)而獲得實施例1之黏著帶。 The above-mentioned adhesive composition A was applied to one surface of the above PVC film by using a comma direct coater, and dried, and wound up at a sufficient length for the following low temperature winding test. . The coating amount of the adhesive composition A was adjusted in such a manner that the adhesive layer of the thickness shown in Table 1 was formed after drying. The adhesive tape of Example 1 was obtained by cutting it to a width of 19 mm (cutting a long strip).

(實施例2~8及比較例1~3) (Examples 2 to 8 and Comparative Examples 1 to 3)

將PVC膜(支持基材)之組成與黏著劑層之厚度設為如表1所示，除此以外，以與實施例1同樣之方式製作實施例2~8及比較例1~3之黏著帶。 The adhesion of Examples 2 to 8 and Comparative Examples 1 to 3 was produced in the same manner as in Example 1 except that the composition of the PVC film (support substrate) and the thickness of the pressure-sensitive adhesive layer were as shown in Table 1. band.

再者，將各例之PVC膜於行進方向(MD)上延伸為約2倍之長度，藉由目視觀察外觀，結果實施例1~5及比較例3之PVC膜均透明。於實施例6及比較例1、2之PVC膜中觀察到若干之白濁。 Further, the PVC film of each example was extended to a length of about 2 times in the traveling direction (MD), and the appearance was visually observed. As a result, the PVC films of Examples 1 to 5 and Comparative Example 3 were all transparent. Some white turbidity was observed in the PVC film of Example 6 and Comparative Examples 1 and 2.

<測定及評價> <Measurement and evaluation>

(動態黏度測定) (Dynamic viscosity measurement)

基於JIS K 7210(2009)中所記載之流動試驗方法而進行測定。具體而言，使用島津製作所股份有限公司製造之流動度試驗儀(flow tester)(毛細管流變儀)CFT-500D/100D，於設定為160℃之容積為1cm3之活塞內填充作為測定試樣之PVC膜使其熔融，根據施加40MPa之荷重(P)而自孔徑(D)為1mm、長度(L)為1mm之模嘴擠出時之流動速率(Q)求出動態黏度(單位：Pa‧s)。 The measurement was carried out based on the flow test method described in JIS K 7210 (2009). Specifically, a flow tester (capillary rheometer) CFT-500D/100D manufactured by Shimadzu Corporation was used, and a piston having a volume of 1 cm 3 set at 160 ° C was filled as a measurement sample. The PVC film was melted, and the dynamic viscosity (unit: Pa) was obtained from the flow rate (Q) at the time of extrusion of the nozzle having a pore diameter (D) of 1 mm and a length (L) of 1 mm according to a load (P) of 40 MPa. ‧s).

(低溫拉伸斷裂伸長率之測定) (Measurement of low temperature tensile elongation at break)

將各例之黏著帶切成寬10mm、長100mm之尺寸而製作測定樣品，基於JIS K 7161中所記載之「塑膠-拉伸特性」之試驗方法測定-20℃下之拉伸斷裂伸長率。所使用之測定裝置及測定條件如下所示。 Each of the adhesive tapes was cut into a size of 10 mm in width and 100 mm in length to prepare a measurement sample, and the tensile elongation at break at -20 ° C was measured in accordance with the test method of "plastic-tensile properties" described in JIS K 7161. The measurement device and measurement conditions used are as follows.

裝置：拉伸試驗機(島津製作所股份有限公司製造，Autograph AG-20kNG) Device: Tensile testing machine (manufactured by Shimadzu Corporation, Autograph AG-20kNG)

測定條件：夾盤間距離為50mm、拉伸速度為300mm/min Measurement conditions: the distance between the chucks is 50 mm, and the stretching speed is 300 mm/min.

於上述條件下將各測定樣品於長度方向上拉伸，根據樣品斷裂之時間點之夾盤間距離X(mm)，藉由下式：拉伸斷裂伸長率(%)=(X-50)/50×100而求出低溫拉伸斷裂伸長率。 Each of the measurement samples was stretched in the longitudinal direction under the above conditions, and the distance between the chucks at the time point of the sample breakage X (mm) was obtained by the following formula: tensile elongation at break (%) = (X-50) /50 × 100 to determine the low temperature tensile elongation at break.

(低溫纏繞試驗) (low temperature winding test)

準備10根將住友電裝股份有限公司製造之汽車用薄壁低壓電線「AVSS0.5」切成600mm之長度者及4根將住友電裝股份有限公司製造之汽車用薄壁低壓電線「AVSS0.85」切成600mm之長度者。將該等14根電線彙集，以容易進行纏繞作業之方式將長度方向之兩端利用黏著帶彙總固定後，於上述電線之外周藉由半搭接(half lap)而纏繞各例之黏著帶(寬19mm)，製作評價用樣品。此處所謂半搭接，係指於纏繞黏著帶時，以該黏著帶之寬度之一半重疊於已纏繞之黏著帶之寬度之一半之方式進行之纏繞態樣。將上述評價用樣品投入至設定為-20℃之手套箱(愛斯佩克股份有限公司製造之「WU-200」)中並保持1小時後，於同一手套箱內以沿著直徑為80mm之鋼棒之外周之方式進行纏繞。維持該狀態，藉由目視觀察向鋼棒外周纏繞時或自纏繞起30分鐘以內，於各例之黏著帶(於集束電線之外周藉由半搭接而纏繞之黏著帶)是否產生龜裂。 We will prepare 10 pieces of thin-walled low-voltage electric wires "AVSS0.5" manufactured by Sumitomo Denso Co., Ltd. and cut them into 600mm lengths and 4 thin-wall low-voltage wires for automobiles manufactured by Sumitomo Denso Co., Ltd. "AVSS0. 85" cut into the length of 600mm. The 14 electric wires are collected, and the both ends in the longitudinal direction are collectively fixed by an adhesive tape so as to be easily wound, and the adhesive tape of each example is wound around the outer circumference of the electric wire by a half lap ( A sample for evaluation was produced with a width of 19 mm. The term "semi-lapping" as used herein refers to a winding state in which one of the widths of the adhesive tape is half overlapped with the width of the wound adhesive tape when the adhesive tape is wound. The sample for evaluation was placed in a glove box (WU-200 manufactured by Espress Co., Ltd.) set at -20 ° C for 1 hour, and then was 80 mm in diameter in the same glove box. The steel rod is wound in a manner other than the circumference. While maintaining this state, whether or not cracks occurred in the adhesive tape of each example (adhesive tape wound by a half overlap on the outer circumference of the bundled wire) by visual observation of the outer circumference of the steel bar or within 30 minutes from the winding.

將觀察結果按以下3種水準表示於表1之「-20℃下之纏繞試驗」之欄中。 The observation results are shown in the column of "winding test at -20 ° C" in Table 1 in the following three levels.

E：未發現龜裂之產生(低溫龜裂防止性：優)。 E: No cracks were found (low temperature crack prevention: excellent).

G：發現輕微之龜裂，但不會看到集束電線之外表面(低溫龜裂防止性：良)。 G: A slight crack was found, but the outer surface of the bundled wire was not seen (low temperature crack prevention: good).

P：發現可看到集束電線之外表面之水準之龜裂(低溫龜裂防止性差)。 P: It was found that cracks at the level of the outer surface of the bundled wire were observed (low temperature crack prevention).

將所得之結果與各例之黏著帶之概略構成一同表示於表1中。 The results obtained are shown in Table 1 together with the outline of the adhesive tape of each example.

如表1所示，低溫拉伸斷裂伸長率為80%以上之實施例1~8之黏著帶與比較例1~3之黏著帶相比，低溫(此處為-20℃)纏繞試驗中之龜裂防止性明顯良好。實施例1、2、4、6~8之黏著帶顯示出特別高之低溫龜裂防止性。 As shown in Table 1, the adhesive tapes of Examples 1 to 8 having a low-temperature tensile elongation at break of 80% or more were compared with the adhesive tapes of Comparative Examples 1 to 3, and the low temperature (here, -20 ° C) winding test. Crack prevention is clearly good. The adhesive tapes of Examples 1, 2, 4, and 6 to 8 exhibited particularly high low temperature crack prevention.

再者，於實施例8之黏著帶中，將PVC膜中之塑化劑B1之含量變更為22重量%，且將彈性體E2之含量變更為18重量%，結果確認該黏著帶之低溫拉伸斷裂伸長率為125%，於上述低溫纏繞試驗中顯示出優異之龜裂防止性。 Further, in the adhesive tape of Example 8, the content of the plasticizer B1 in the PVC film was changed to 22% by weight, and the content of the elastomer E2 was changed to 18% by weight, and it was confirmed that the adhesive tape was pulled at a low temperature. The elongation at break was 125%, and excellent crack prevention was exhibited in the above low temperature winding test.

以上，對本發明之具體例進行了詳細說明，但該等僅為例示，並不限定申請專利範圍。申請專利範圍中所記載之技術亦包含對以上所例示之具體例進行各種變化、變更者。 The specific examples of the present invention have been described in detail above, but these are merely examples and are not intended to limit the scope of the claims. The technology described in the scope of the patent application also includes various changes and modifications to the specific examples described above.

1‧‧‧PVC黏著帶(黏著帶) 1‧‧‧PVC adhesive tape (adhesive tape)

11‧‧‧支持基材 11‧‧‧Support substrate

11A‧‧‧第一面 11A‧‧‧ first side

11B‧‧‧第二面 11B‧‧‧ second side

21‧‧‧黏著劑層 21‧‧‧Adhesive layer

21A‧‧‧表面(黏著面) 21A‧‧‧Surface (adhesive surface)

Claims (10)

一種黏著帶，其包含：聚氯乙烯膜、及配置於該聚氯乙烯膜之至少一個表面之黏著劑層；且-20℃下之拉伸斷裂伸長率為80%以上。 An adhesive tape comprising: a polyvinyl chloride film; and an adhesive layer disposed on at least one surface of the polyvinyl chloride film; and a tensile elongation at break at -20 ° C of 80% or more. 如請求項1之黏著帶，其中構成上述聚氯乙烯膜之樹脂材料之動態黏度為3000Pa‧s以下。 The adhesive tape of claim 1, wherein the resin material constituting the polyvinyl chloride film has a dynamic viscosity of 3,000 Pa‧s or less. 如請求項1或2之黏著帶，其中上述聚氯乙烯膜之厚度為100μm以下。 The adhesive tape of claim 1 or 2, wherein the polyvinyl chloride film has a thickness of 100 μm or less. 如請求項1至3中任一項之黏著帶，其基重為100g/m2以下。 The adhesive tape according to any one of claims 1 to 3, which has a basis weight of 100 g/m 2 or less. 如請求項1至4中任一項之黏著帶，其中上述聚氯乙烯膜包含彈性體。 The adhesive tape according to any one of claims 1 to 4, wherein the polyvinyl chloride film comprises an elastomer. 如請求項5之黏著帶，其中上述聚氯乙烯膜中之上述彈性體之含量為1重量%以上且30重量%以下。 The adhesive tape according to claim 5, wherein the content of the elastomer in the polyvinyl chloride film is 1% by weight or more and 30% by weight or less. 如請求項1至6中任一項之黏著帶，其中上述聚氯乙烯膜包含10重量%以上且60重量%以下之塑化劑。 The adhesive tape according to any one of claims 1 to 6, wherein the polyvinyl chloride film contains 10% by weight or more and 60% by weight or less of a plasticizer. 如請求項1至7中任一項之黏著帶，其中上述聚氯乙烯膜包含脂肪酸金屬鹽。 The adhesive tape according to any one of claims 1 to 7, wherein the polyvinyl chloride film comprises a fatty acid metal salt. 如請求項8之黏著帶，其中上述聚氯乙烯膜中之上述脂肪酸金屬鹽之含量為0.02重量%以上且1重量%以下。 The adhesive tape of claim 8, wherein the content of the fatty acid metal salt in the polyvinyl chloride film is 0.02% by weight or more and 1% by weight or less. 一種線束，其包含電線、及纏繞於該電線之周圍之如請求項1至9中任一項之黏著帶。 A wire harness comprising an electric wire, and an adhesive tape according to any one of claims 1 to 9 wound around the electric wire.
TW105110368A 2015-04-01 2016-03-31 Adhesive tape TWI747819B (en)

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JP2015133295A JP6633306B2 (en) 2015-04-01 2015-07-02 Adhesive tape
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CN110418826A (en) * 2017-03-15 2019-11-05 电化株式会社 Adhesiveness sheet material, protection materials and harness
US20200299549A1 (en) * 2017-10-05 2020-09-24 Denka Company Limited Adhesive sheet, protective material, and wire harness
WO2021029403A1 (en) * 2019-08-15 2021-02-18 デンカ株式会社 Adhesive tape
JP7512126B2 (en) 2019-09-11 2024-07-08 積水化学工業株式会社 Polyvinyl chloride-based carbon fiber reinforced composite material

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