TWI747819B - Adhesive tape - Google Patents

Adhesive tape Download PDF

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Publication number
TWI747819B
TWI747819B TW105110368A TW105110368A TWI747819B TW I747819 B TWI747819 B TW I747819B TW 105110368 A TW105110368 A TW 105110368A TW 105110368 A TW105110368 A TW 105110368A TW I747819 B TWI747819 B TW I747819B
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pvc
weight
adhesive tape
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adhesive
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TW105110368A
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Chinese (zh)
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TW201700674A (en
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原田智仁
陳柏鈞
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日商日東電工股份有限公司
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    • 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
    • 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]
    • 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
    • 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
    • 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

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

Abstract

本發明提供一種即便使聚氯乙烯(PVC)膜變薄亦不易於低溫下產生龜裂之PVC黏著帶。藉由本發明而提供之黏著帶包含PVC膜、及配置於該PVC膜之至少一個表面之黏著劑層。上述黏著帶於-20℃下之拉伸斷裂伸長率為80%以上。 The present invention provides a PVC adhesive tape that is not prone to cracking at low temperature even if the polyvinyl chloride (PVC) film is thinned. The adhesive tape provided by the present invention includes a PVC film and an adhesive layer disposed on at least one surface of the PVC film. The tensile elongation at break of the adhesive tape at -20°C is above 80%.

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 provided with 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。 This application is based on the Japanese patent application No. 2015-75201 filed on April 1, 2015, the Japanese patent application No. 2015-133295 filed on July 2, 2015, and the Japanese patent filed on December 28, 2015 Application for priority of No. 2015-257442, all the contents of these applications are incorporated into this specification for 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。 Adhesive tapes with an adhesive layer arranged on at least one surface of the PVC film (hereinafter also referred to as "PVC adhesive tapes") are widely used for various purposes such as electrical insulation, packaging, and protection due to their good workability. As prior art documents related to PVC adhesive tapes, Patent Documents 1 and 2 can be cited.

[先前技術文獻] [Prior 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 Publication No. 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。 As an example of the use of PVC adhesive tape, it can be exemplified by the use of wrapping around electric wires in a wire harness assembled in a vehicle. If the PVC adhesive tape that can be used in such a wire harness can be made lighter, the lighter weight of the vehicle can be used to contribute to the improvement of the fuel efficiency of the vehicle, which is meaningful. In order to make the PVC adhesive tape lightweight, effective It is to make the PVC film thinner, and the above-mentioned PVC film contains a member of the PVC which has a larger specific gravity in the plastic. However, if the PVC film is made thinner, there is a tendency that the wire harness wound with the PVC adhesive tape using the PVC film is likely to crack in the above-mentioned PVC adhesive tape at low temperatures.

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 was made in view of this situation, and its object is to provide a PVC adhesive tape that is not susceptible to cracking at low temperatures even if the PVC film is thinned.

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。 If the present invention is used, an adhesive tape is provided, which includes a polyvinyl chloride film (PVC film) and an adhesive layer disposed on at least one surface of the PVC film. The above-mentioned adhesive tape (PVC adhesive tape) has a tensile elongation at break at -20°C (hereinafter also referred to as "low temperature tensile elongation at break") above 80%. In this way, the PVC adhesive tape that exhibits high stretchability even at low temperatures is also excellent in flexibility even at low temperatures, and therefore can exhibit good low-temperature performance (for example, the performance of preventing cracks at low temperature).

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 with a dynamic viscosity of 3000 Pa·s or less can be preferably used. If such a PVC film is used, there is a tendency to suitably realize a PVC adhesive tape with a high low-temperature tensile elongation at break (typically showing a low-temperature tensile elongation of over 80%).

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 aspect of the adhesive tape, the thickness of the above-mentioned PVC film is 100 μm or less. If the technology disclosed here is used, it is possible to provide a PVC adhesive tape that shows good low-temperature performance even in such a thin PVC film composition.

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 here shows good low-temperature performance even if the PVC film is thinned as described above, and is therefore suitable for the light-weight of the adhesive tape. The technique disclosed here can be suitably implemented in the form of an adhesive tape with a basis weight of 100 g/m 2 or less, and can provide an adhesive tape with light weight and good low-temperature properties.

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 aspect of the adhesive tape, the above-mentioned PVC film contains an elastomer. If a PVC film composed of elastomers is used, there is an adhesive tape that suitably achieves a high low-temperature tensile elongation at break (typically an adhesive tape that exhibits a low-temperature tensile elongation of more than 80%) The tendency. The content of the elastomer in the 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-mentioned PVC film typically contains a plasticizer. The technology disclosed here can be preferably implemented in a state where the content of the plasticizer in the PVC film is, for example, 10% by weight or more and 60% by weight or less. If a PVC film with such a composition is used, there is a tendency to achieve both 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-mentioned PVC adhesive tape preferably contains a fatty acid metal salt. By making the PVC film contain fatty acid metal salt, there is a tendency for the heat-resistant deterioration resistance to be improved. As the fatty acid metal salt, those containing at least one metal element (except Pb) belonging to any 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 preferred.

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 technology disclosed here can be preferably implemented in a state where the content of the fatty acid metal salt in the PVC film is, for example, 0.02% by weight or more and 1% by weight or less. If a PVC film of such a composition is used, there is a tendency to achieve both 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, if the manual is used, a wire harness having the following structure is provided: any of the adhesive tapes disclosed here are wound around the wire. With such a structure, 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‧‧‧The 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 structure 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 structure of an adhesive tape of 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, suitable embodiments of the present invention will be described. Circumstances other than the matters specifically mentioned in this specification and necessary for the implementation of the invention can be accepted based on the instructions on the implementation of the invention described in this specification and the technical common sense at the time of filing the application. People understand. The present invention can be implemented based on the content disclosed in this specification and common technical 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 here includes: a PVC film, and an adhesive layer disposed on one 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-mentioned PVC film is typically obtained by forming a film of a PVC composition containing a specific component by a known method. The so-called PVC composition here refers to a composition in which the main component (which contains the most component, which may contain more than 50% by weight) is PVC. If the PVC composition is used, it is possible to form a PVC film (typically a film containing a soft vinyl chloride resin) that exhibits suitable physical properties as a substrate (supporting substrate) supporting the adhesive layer. The content of PVC in the PVC film is typically more than 40% by weight, and it is usually appropriate to set it to more than 50% by weight. The technology disclosed herein can be preferably implemented in a state where the content of PVC in the above-mentioned 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-mentioned PVC composition can be various polymers with vinyl chloride as the main monomer (referring to the main component in the monomer component, which can be a monomer that accounts for more than 50% by weight of the monomer component). In other words, the concept of PVC here includes not only the homopolymer of vinyl chloride, but also the copolymer of vinyl chloride and various comonomers. Examples of the above-mentioned comonomers include: vinylidene chloride; olefins such as ethylene and propylene (preferably olefins with 2 to 4 carbon atoms); acrylic acid and methacrylic acid (hereinafter, acrylic acid and methacrylic acid are collectively referred to as "(formaldehyde) (Meth)acrylic acid"), maleic acid, fumaric acid and other monomers containing carboxyl groups or their anhydrides (maleic anhydride, etc.); (meth)acrylic acid esters, such as (meth)acrylic acid and those with a carbon number of about 1-10 Alkyl alcohol or cycloalkyl alcohol ester; vinyl acetate, vinyl propionate and other vinyl ester monomers; styrene, substituted styrene (α-methylstyrene, etc.), vinyl toluene and other styrene Monomer; Acrylonitrile, etc. As the above-mentioned copolymer, the copolymerization ratio of vinyl chloride is preferably 70% by weight or more (preferably 90% by weight Above). PVC is obtained by polymerizing such monomers by an appropriate method (typically a suspension polymerization method).

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. Considering the balance between processability (formability) and strength, it is generally preferable to use PVC whose average degree of polymerization is in the range of about 800 to 1600 (for example, about 900 to 1500).

(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 in the technology disclosed here 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 above-mentioned plasticizer include: benzoate (diol benzoate etc.), phthalate, terephthalate, trimellitate, pyromellitic acid Aromatic carboxylic acid esters such as esters; aliphatic carboxylic acid esters such as adipic acid ester, sebacic acid ester, azelaic acid ester, maleic acid ester, citric acid ester (acetyl tributyl citrate, etc.); Polyester of carboxylic acid and polyol; in addition, polyether polyester, epoxy polyester (epoxidized vegetable oil such as epoxidized soybean oil or epoxidized linseed oil, epoxidized fatty acid alkyl ester, etc.), phosphate ester (Tresyl phosphate etc.) etc., but it is not limited to these. A plasticizer can be used individually by 1 type or in combination of 2 or more types.

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 above-mentioned phthalate (phthalate plasticizer), for example, phthalic acid and a carbon number of 4 to 16 (preferably 6 to 14, typically 8 to 13) can be used Suitable examples of diesters of alkyl alcohol include di-n-octyl phthalate, di(2-ethylhexyl) phthalate, diisononyl phthalate, and phthalic acid Diisodecyl ester and so on. Among them, diisononyl 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 above-mentioned terephthalate (terephthalate-based 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 alkyl alcohol, bis(2-ethylhexyl) terephthalate can be cited.

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 above-mentioned trimellitate (trimellitic acid ester-based plasticizer), for example, a triester of trimellitic acid and an alkyl alcohol having 6 to 14 carbon atoms (typically 8 to 12) can be used. Examples include: tri-n-octyl trimellitate, tris(2-ethylhexyl) trimellitate, triisononyl trimellitate, tri-n-decyl trimellitate, trimellitic acid Triisodecyl ester and so on.

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 (pyromellitic acid ester-based plasticizer), for example, a tetraester of pyromellitic acid and an alkyl alcohol having 6 to 14 carbon atoms (typically 8 to 12) can be used. Suitable examples include tetra-n-octyl pyromellitic acid, tetrakis(2-ethylhexyl) pyromellitic acid, and tetra-n-decyl pyromellitic acid.

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 above-mentioned adipate (adipate-based plasticizer), for example, two of adipic acid and an alkyl alcohol having 4 to 16 carbon atoms (preferably 6 to 14 and typically 8 to 13) can be used Suitable examples of the ester include di-n-octyl adipate, di(2-ethylhexyl) adipate, diisononyl adipate, and the like.

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, azelaic acid, sebacic acid, citric acid, phthalic acid, isophthalic acid, p- Polycarboxylic acids such as phthalic acid and trimellitic acid and (poly)ethylene glycol ("(poly)ethylene glycol" herein collectively refer to the meaning of ethylene glycol and polyethylene glycol. The following is the same ), (poly) propylene glycol, (poly) butylene glycol, (poly) hexanediol, (poly) neopentyl glycol, polyvinyl alcohol and other polyols derived from polyester compounds. The above-mentioned polycarboxylic acid is preferably an aliphatic dicarboxylic acid having 4 to 12 carbon atoms (typically 6 to 10), and suitable examples include adipic acid and sebacic acid. Especially in terms of versatility or price, adipic acid is more desirable. The above-mentioned polyol is preferably an aliphatic diol having 2 to 10 carbon atoms, and suitable examples include ethylene glycol and butanediol (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 set to, for example, 10% by weight or more of the PVC film, and from the viewpoint of obtaining a better plasticizing effect, it is preferably set to 15% by weight or more. The content of the plasticizer can also be 20% by weight or more. In addition, the content of the plasticizer can be set to less than 50% by weight, for example. From the viewpoint of heat resistance (typically heat degradation resistance), etc., it is generally appropriate to set it to 40% by weight or less. 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 there is no particular limitation, the amount of plasticizer used relative to 100 parts by weight of PVC is usually 15 to 75 parts by weight, preferably 20 to 60 parts by weight, and 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。 Although there is no particular limitation, the amount of plasticizer contained in the PVC film is usually set to 1% by weight or more and less than 30% by weight when the weight of the PVC adhesive tape with the PVC film is set to 100% by weight More appropriate. The plasticizer in the PVC film can diffuse into the adhesive layer due to time. Therefore, depending on the composition of the PVC adhesive tape, the plasticizer may be concentrated and the adhesion and other characteristics may change at low temperatures. Get inhomogeneous conditions. By setting the usage amount of the plasticizer relative to the weight of the PVC adhesive tape (the plasticizer content of the PVC adhesive tape) within the above range, there is a good balance between the good plasticizing effect and the partial concentration of the plasticizer. There is a tendency of chemical inhibition. The technology disclosed here can be preferably implemented in a state where the plasticizer content rate 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 of the preferred aspects of the technology disclosed here, the PVC film can be made to contain an elastomer. By containing the elastomer in the PVC film, it is possible to suppress the decrease in properties such as strength at room temperature (for example, about 25° C.) or heat resistance (for example, heat resistance deterioration), and to improve the flexibility at low temperature. Therefore, by using the PVC film, a PVC adhesive tape with a large low-temperature tensile elongation at break can be suitably realized. Including elastomers 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. As non-limiting examples of such elastomers, chlorinated polyethylene (CPE), ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer (for example, vinyl acetate content of about 10% by weight or more, Typically about 10-25% by weight of vinyl chloride-vinyl acetate copolymer), (meth)acrylate-butadiene-styrene copolymer (e.g. methyl methacrylate-butadiene-benzene Ethylene copolymer), acrylonitrile-butadiene-styrene copolymer, acrylonitrile-butadiene copolymer, styrene-butadiene copolymer (typically styrene-butadiene block copolymer, such as Styrene content is about 35% by weight or less, typically about 10 to 35% by weight styrene-butadiene block copolymer), styrene-butadiene-styrene block copolymer, chlorosulfonated poly Ethylene (CSM), polyester-based thermoplastic elastomer, thermoplastic polyurethane, other synthetic rubbers (isoprene rubber, butadiene rubber, etc.), these composites or modified products, etc. Elastomers can be used individually by 1 type or in combination of 2 or more types.

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。 In the technology disclosed here, as the elastomer contained in the PVC film, it is preferable to select a material with good compatibility 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 with a composition (content) within a range that achieves a good compatibility state in the PVC film. The above-mentioned compatibility state can be grasped by observing the presence or absence of white turbidity, for example, by observing the PVC film directly or in the state of extending (for example, extending to about 2 times 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。 In the technology disclosed herein, as a non-limiting example of an elastomer that can be preferably used, chlorinated polyethylene (for example, the chlorine content is about 25-50% by weight, typically about 30-45% by weight). , Preferably about 35~45% by weight of chlorinated polyethylene), (meth)acrylate-butadiene-styrene copolymer, acrylonitrile-butadiene copolymer (for example, the content of acrylonitrile is about 15~ 50% by weight, typically about 25 to 45% by weight, preferably about 30 to 40% by weight of acrylonitrile-butadiene copolymer), ethylene-vinyl acetate copolymer (e.g., 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 it is set in such a way that the desired effect can be obtained. Generally, it is more appropriate to set the content of the elastomer in the PVC film to about 0.5% by weight or more, and from the viewpoint of obtaining a higher effect, it is preferably to be about 1% by weight or more. In addition, from the viewpoint of compatibility, etc., the content of elastomer in PVC film Generally, it is appropriate to set it to less than 40% by weight, preferably about 35% by weight or less, and more preferably about 30% by weight or less (for example, about 25% by weight or less). From the standpoint of easily achieving a balance between the effect of using elastomers and other characteristics, the technology disclosed here can allow the content of elastomers in the PVC film to be about 1-20% by weight (typically about 1-15% by weight, It is preferably about 1 to 10% by weight, for example, about 3 to 8% by weight) and is preferably implemented.

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)。 Although it is not particularly limited, the content of the elastomer relative to 100 parts by weight of PVC is usually about 1 part by weight or more. From the viewpoint of obtaining higher effects, it is preferably 2 parts by weight or more. In addition, from the viewpoint of compatibility, etc., the content of the elastomer relative to 100 parts by weight of 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) , For example, about 45 parts by weight or less). In a preferred aspect, the content of the elastomer relative to 100 parts by weight of PVC can be about 2-25 parts by weight (for example, about 5-20 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 in the technology disclosed here preferably contains fatty acid metal salt in addition to PVC and plasticizer. PVC film has the following situations: during the processing of the PVC film or PVC adhesive tape, or the use environment of the adhesive tape, the PVC contained in the above-mentioned PVC film is subjected to physical energy such as heat, ultraviolet rays or shearing force, etc. , Discoloration due to chemical reactions caused by this, or damage to physical, mechanical or electrical properties. Since the PVC film contains fatty acid metal salt, the fatty acid metal salt can function as a stabilizer to prevent or inhibit the above-mentioned chemical reaction. In addition, preventing or suppressing the above-mentioned chemical reaction (typically the detachment of hydrogen chloride) can make a beneficial contribution to the improvement of the heat-resistant deterioration 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 compound can be used alone or in combination of two or more compounds that can function as a stabilizer of the PVC film. For example, the fatty acids constituting the fatty acid gold salt can be selected from saturated or unsaturated fatty acids (may be hydroxy fatty acids) with carbon numbers of about 10-20 (typically 12-18) such as lauric acid, ricinoleic acid, and stearic acid. Best choice. At once From the viewpoints of the formability and processability of the PVC film, metal stearate can be preferably used. In addition, from the viewpoints of suppression of changes over time of the PVC film or PVC adhesive tape, and flexibility at low temperatures, metal lauric acid salts can be preferably used. It is also possible to use a combination of metal stearate and metal laurate. In this case, the ratio of the amount of lauric acid metal salt used to the amount of stearic acid metal salt used is not particularly limited. For example, it can be set to about 0.1 to 10 on a weight basis, and usually set to 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 the metal constituting the fatty acid metal salt, in consideration of the increasing awareness of environmental sanitation in recent years, metals other than lead (non-lead metals) can be preferably used. If the technology disclosed here is used, it is possible to realize a PVC adhesive tape that exhibits good heat-resistant deterioration even in such a state where no lead-containing stabilizer is used. As the above-mentioned 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 can be selected. Suitable examples include Li, Na, Ca, Mg, Zn, Ba and Sn. As the above-mentioned fatty acid metal salt, a Ca salt or a Ba salt can be preferably used from the viewpoints of cost, ease of availability, and the like. In addition, from the viewpoint of the formability and processability of the PVC film, Zn salt can be preferably used. In a preferred aspect, Ca salt and Zn salt can be used in combination. In this case, the ratio of the used amount of Zn salt to the used amount of Ca salt is not particularly limited. For example, it can be set to about 0.1-10 on a weight basis, and usually set to about 0.2-5 (for example, about 0.5-2 ) Is more appropriate. The technique disclosed herein can be preferably implemented in a state where Ca stearate and Zn lauric acid are contained in the above-mentioned weight ratio, or a state where Zn stearate and Ca lauric acid are contained in the above-mentioned weight ratio. Furthermore, in applications where the use of fatty acid Pb salt is permitted, the fatty acid Pb salt may also 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 fatty acid metal salt used is not particularly limited. The amount of fatty acid metal salt used (in the case of using two or more types, the total amount) can be set such that the content of the fatty acid metal salt in the PVC film becomes about 0.01% by weight or more to obtain a higher effect. From a viewpoint, it is preferable to set it as about 0.02 weight% or more, and it is more preferable to set it as about 0.05 weight% or more. The upper limit of the content of fatty acid metal salt is not particularly limited, usually set as PVC Approximately 5% by weight or less of the film is appropriate. From the viewpoint of flexibility at low temperatures, etc., it is preferably approximately 3% by weight or less, and more preferably approximately 1% by weight or less (typically approximately 0.5% by weight). Or less, 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。 In the PVC film in the technology disclosed here, in addition to PVC and plasticizers, antioxidants may also be included. By making the PVC film contain an antioxidant, 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 that can exert an antioxidant function can be used without particular limitation. Examples of antioxidants include phenol-based antioxidants, phosphorus-based antioxidants, sulfur-based antioxidants, and amine-based antioxidants. Antioxidant can be used individually by 1 type or in combination of 2 or more types.

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。 Suitable examples of antioxidants include phenolic antioxidants such as hindered phenolic antioxidants. Examples of hindered phenol-based antioxidants include: pentaerythritol-tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (trade name "Irganox 1010", Ciba Company manufacture), 3-(3,5-di-tert-butyl-4-hydroxyphenyl) stearyl propionate (trade name "Irganox 1076", manufactured by Ciba Corporation), 4,6- Bis(dodecylthiomethyl)-o-cresol (trade name "Irganox 1726", manufactured by Ciba Corporation), triethylene glycol-bis[3-(3-tertiarybutyl-5-methyl) -4-hydroxyphenyl)propionate] (trade name "Irganox 245", manufactured by Ciba Corporation), bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (Trade name "TINUVIN 770", manufactured by Ciba Corporation), condensation polymer of dimethyl succinate and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol (dimethyl succinate Ester-1-(2-hydroxyethyl)-4-hydroxy-2,2,6,6-tetramethylpiperidine polycondensate) (trade name "TINUVIN 622", manufactured by Ciba Corporation), etc. Among them, pentaerythritol-tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (trade name "Irganox 1010", manufactured by Ciba Corporation), triethyl Diol-bis[3-(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionate] (trade name "Irganox 245", manufactured by Ciba Corporation) and the like.

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 antioxidant used (the total amount when two or more types are used) is not particularly limited. For example, the amount of antioxidant in the PVC film may be approximately 0.001% by weight or more. From the viewpoint of obtaining higher effects, it is generally appropriate to set the antioxidant content in the PVC film to about 0.005% by weight or more, preferably to about 0.01% by weight or more, and more preferably to about 0.05% by weight %above. In a preferred aspect, the content of the antioxidant in the PVC film can be set to about 0.1% by weight or more, can also be set to about 0.5% by weight or more, and can also be set to about 1% by weight or more (for example, about 1.5% by weight). Weight% or more). The upper limit of the antioxidant content is not particularly limited, and it is generally appropriate to set it to be 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。 The PVC film in the technology disclosed herein may further contain well-known additives that can be used in PVC films (especially PVC films for PVC adhesive tapes) within a range that does not significantly hinder the effects of the present invention. . Examples of such additives include: colorants such as pigments and dyes, stabilizers other than fatty acid metal salts (for example, organotin compounds such as dioctyltin laurate), and stabilizing aids (for example, trialkyl phosphite) Inorganic compounds such as phosphites, hydrotalcite or zeolite), light stabilizers, ultraviolet absorbers, modifiers, flame retardants, antistatic agents, antifungal agents, lubricants, etc. The usage amount of these additives can be set to the usual amount in the field of PVC film. The PVC film in the technology disclosed here preferably does not contain a compound having a plurality of polymerizable functional groups (for example, (meth)acryloyl groups) in the molecule such as trimethylolpropane. The reason is that such a compound having a plurality of polymerizable functional groups may be polymerized by oxidation or the like to play a role of hardening the PVC film, which may impair 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 thermoplastic resin film. As such a well-known molding method, for example, a melt extrusion molding method (inflation method, T die method, etc.), melt casting method, calendering method, etc. can be used. The technology disclosed here does not implement the addition of cross-linking agent or active energy rays even when used in the above-mentioned PVC film. The irradiation, etc., can also be preferably implemented in the aspect of treatments that deliberately improve the crosslinkability of the PVC film as a whole. If such a PVC film is used, there is a tendency to obtain a PVC adhesive tape with a higher tensile elongation at break at a lower temperature. The degree of crosslinking of the PVC film can be grasped by putting 1g of the PVC film into 10mL of tetrahydrofuran (THF) and stirring, and visually observing the dissolution of the PVC film in THF. At this time, the remaining insoluble components in THF can be determined. The PVC film is judged to be deliberately introduced with a cross-linked 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, the outline of a typical film production sequence when the calendering method is used 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) Metering: Measure PVC, plasticizer and other materials as needed 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: Stir and mix the measured materials to prepare a uniform mixture (typically a powdery mixture, that is, 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 (2) above is heated and melted, and kneaded with two or more kneading rolls (typically metal rolls). It is appropriate to set the temperature of the kneading roll 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: Put the kneaded product obtained in (3) above into a calendering machine to form a PVC film with any 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 rollers can be adjusted to a range of preferably 1.0 to 1.5, more preferably 1.1 to 1.4, such as 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-mentioned PVC composition (that is, the resin material constituting the PVC film) is not particularly limited. From the viewpoint of the ease of manufacture of thinner (for example, less than 100μm in thickness, typically less than 80μm in thickness) PVC film, usually the dynamic viscosity of the above-mentioned PVC composition is about 4000 Pa‧s or less (for example, about 3500Pa‧s Below) is more advantageous. In a preferred aspect, the dynamic viscosity of the above-mentioned PVC composition may be about 3000 Pa·s 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 showing such a dynamic viscosity is used, it can be suitably achieved -20 PVC adhesive tape with higher tensile elongation at break at ℃. The dynamic viscosity of the above-mentioned PVC composition can be set to, for example, about 1000 Pa·s or more. From the viewpoint of the strength of the PVC film, it is usually about 1300 Pa·s or more (for example, about 1500 Pa·s or more).

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 refers to the dynamic viscosity measured by the method described in the following examples. The above-mentioned dynamic viscosity can be adjusted by the selection of the ingredients (PVC and plasticizers, elastomers and other additives used as needed) contained in the PVC composition and the blending ratio of these. For example, by applying one or more of the following methods, the dynamic viscosity of the above-mentioned PVC composition tends to be generally lower: use PVC with a lower average degree of polymerization; use a lower melt flow rate (MFR) Elastomer: Choose an elastomer with better compatibility 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 here, the above-mentioned PVC film can constitute a single-layer or multi-layer supporting substrate including the PVC film, and can also constitute a supporting substrate including other layers in addition to the PVC film. In a preferred aspect, the above-mentioned other layers may be auxiliary layers such as a printing layer, a peeling treatment layer, a primer layer, etc., which are provided on the surface of the PVC film. Alternatively, the above-mentioned PVC film may constitute a supporting base material in which the PVC film and a resin film other than the PVC film are laminated. As a preferred aspect, a structure in which an adhesive layer is arranged on one side of a supporting 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 technology disclosed here, the thickness of the supporting substrate is not particularly limited. The thickness of the supporting substrate (for example, a supporting substrate containing a single-layer PVC film) is typically about 500 μm or less, usually about 300 μm or less, and from the viewpoint of the rationality of the PVC adhesive tape, it is preferably about 200 μm or less. More preferably, it is about 150 μm or less (for example, about 120 μm or less). The technology disclosed here is implemented with a thinner PVC film as a supporting substrate, and can suitably exhibit the effect of preventing cracks at low temperatures. If a thinner PVC film is used, there is a tendency to make the PVC adhesive tape formed by using the PVC film thinner. Thereby, the outer deformation of the member (such as the wire harness) formed by the above-mentioned PVC adhesive tape can be reduced, and the installation space of the member can be saved. Also, if a thinner PVC film is used, there will be The basis weight of the PVC adhesive tape formed by the PVC film can be reduced. Thereby, it is possible to reduce the weight of a member (such as a wire harness) formed by using the above-mentioned PVC adhesive tape. From this point of view, as the above-mentioned supporting 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, and even more preferably about 80 μm or less) can be preferably used. The supporting substrate may also be a PVC film with a thickness of about 75 μm or less. The thickness of the supporting substrate is typically about 10 μm or more, usually about 25 μm or more, and from the viewpoint of handling properties or crack prevention at low temperature, it is preferably about 50 μm or more (for example, about 60 μm or more). The thickness of the above-mentioned support substrate can be preferably applied to, for example, the protection or bundling of electric wires or piping, the coating of corrugate tubes that surround and protect the surrounding electric wires, etc., and those with a plurality of electric wires bundled (bundled electric 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 where the adhesive layer is arranged in the supporting substrate can also be subjected to corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, acid treatment, alkali treatment, coating of undercoating agent (primer), antistatic Treatment and other previously known surface treatments. Such surface treatment can 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 can be appropriately selected from known ones. The thickness of the undercoat layer is not particularly limited, and it is generally preferably about 0.01 μm or more and about 1 μm or less, and 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 a PVC adhesive tape composed of an adhesive layer on only one surface of the supporting substrate, the surface (back) on the side where the adhesive layer is not provided can also improve the printability, reduce the light reflectivity, and overlap it. For the purpose of improving properties, corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, acid treatment, alkali treatment, etc. are applied to the above-mentioned back surface. In addition, on the back of the PVC adhesive tape, it may also be subjected to previously known surface treatments such as peeling treatment or antistatic treatment as needed. For example, the release treatment layer of long-chain alkyl series, silicone series, etc. is provided on the back of the base material, so that the unwinding force of the PVC adhesive tape wound in a roll shape can be reduced. Even if the PVC adhesive tape disclosed here is not implemented on the back of the PVC adhesive tape as above It can also be preferably implemented in the form of the peeling treatment described above.

<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 technology disclosed here is typically a layer containing a material (adhesive) with the following properties: a soft solid (viscoelastic) state in a temperature region around room temperature, simple pressure Ground and adhered body. The so-called adhesive here is as defined in "CADahlquist, "Adhesion: Fundamental and Practice", McLaren & Sons, (1966) P.143". Generally speaking, it can have a complex tensile elastic modulus E*(1Hz ) Materials with properties of <10 7 dyne/cm 2 (typically materials with 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 here can be composed of a water-dispersible adhesive composition, a water-soluble adhesive composition, a solvent-based adhesive composition, a hot-melt adhesive composition, and an active energy ray hardening adhesive. Adhesive layer formed by various forms of adhesive composition such as composition. Here, the so-called "active energy rays" refer to energy rays with energy that can cause chemical reactions such as polymerization reactions, cross-linking reactions, and decomposition of initiators, and include light such as ultraviolet rays, visible rays, and infrared rays, or Concepts such as alpha rays, beta rays, gamma rays, electron beams, neutron rays, and X-ray radiation. In terms of inhibiting the transfer of the plasticizer in the PVC film to the adhesive layer and easily inhibiting changes in the adhesive force over time, the adhesive layer formed of a water-dispersed adhesive composition is preferred.

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-mentioned adhesive layer is not particularly limited. The above-mentioned adhesive may be a rubber polymer, acrylic polymer, polyester polymer, urethane polymer, polyether polymer, polysiloxane polymer, which is well-known in the field of adhesives. , Polyamide-based polymers, fluorine-based polymers, and other rubber-like polymers with one or two or more as the base polymer (the main component of the 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. In addition, the so-called acrylic polymer refers to the polymer structure containing at least one (meth)acrylic acid monomer derived from a molecule (acrylic acid) A polymer of monomer units of olefinic acid monomers typically refers to a polymer containing monomer units derived from acrylic monomers at a ratio of more than 50% by weight. In addition, the above-mentioned (meth)acryloyl group collectively refers to the meaning of acryloyl group and methacryloyl group.

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 here, from the viewpoint of low-temperature characteristics and broadness of adherend selectivity, an adhesive layer (rubber-based adhesive) with a rubber-based adhesive as the main component can be preferably used Adhesive layer). The rubber-based adhesive may be one containing one or two or more rubber-based polymers selected from natural rubber and synthetic rubber. In addition, the term "principal component" in this specification refers to the component that contains the most when there is no special description, and typically refers to the component that contains more than 50% by weight. As the rubber-based polymer, either natural rubber or synthetic rubber can be used. As the natural rubber, known materials that can be used in the adhesive composition can be used without particular limitation. The so-called natural rubber here is not limited to unmodified natural rubber, and includes, for example, the concept of modified natural rubber modified by acrylate or the like. Unmodified natural rubber and modified natural rubber can also be used together. As the synthetic rubber, known materials that can be used in the adhesive composition can be used without particular limitation. Suitable examples include styrene-butadiene rubber (SBR), styrene-isoprene rubber, and chloroprene rubber. These synthetic rubbers can be unmodified or modified (such as carboxyl modification). The rubber-based polymer can be used singly 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。 A preferred aspect of the PVC adhesive tape has a rubber-based adhesive layer formed of a water-dispersible rubber-based adhesive composition. The water-dispersible rubber-based adhesive composition is blended with an adhesive-imparting resin in the rubber latex as required And other additives. The above-mentioned rubber-based latex may be obtained by dispersing various known rubber-based polymers in water. Either natural rubber latex and synthetic rubber latex can be used. As the natural rubber latex, known materials that can be used in the adhesive composition can be used without particular limitation. The so-called natural rubber latex here is not limited to unmodified natural rubber latex, and includes, for example, the concept of modified natural rubber latex modified by acrylate or the like. Unmodified natural rubber Latex and modified natural rubber latex are used together. As the synthetic rubber latex, known materials that can be used in the adhesive composition can be used without particular limitation. Suitable examples include styrene-butadiene rubber latex (SBR latex), styrene-isoprene rubber latex, and chloroprene rubber latex. The synthetic rubber contained in the synthetic rubber latex may be unmodified or modified (for example, carboxyl modification). Rubber latex can be used individually by 1 type or in combination of 2 or more types.

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 preferred aspect of the rubber-based adhesive composition (for example, a water-dispersed rubber-based adhesive composition) contains both natural rubber and synthetic rubber as the rubber-based polymer. If this adhesive composition is used, a PVC adhesive tape showing good adhesive properties can be formed. For example, it is possible to form a PVC adhesive tape exhibiting adhesive properties suitable for the protection or bundling of electric wires, piping, etc., as described above, for the coating of corrugated pipes, and electrical insulation. 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 about The range of 30:70~70:30. As the above-mentioned 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 technology disclosed here may contain an adhesion-imparting resin in addition to the base polymer described above. As the adhesion-imparting resin, an appropriate one can be selected and used from various known adhesion-imparting resins. For example, one kind or two or more kinds selected from various adhesion-imparting resins such as rosin-based resins, petroleum resins, terpene-based resins, phenol-based resins, lavender-indene-based resins, and ketone resins, 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 rosin-based resins include rosin derivatives such as disproportionated rosin, hydrogenated rosin, polymerized rosin, maleic rosin, and fumaric rosin, or phenol-modified rosin, rosin ester, and the like. Examples of phenol-modified rosins include those obtained by addition reaction of phenols with natural rosin or rosin derivatives, or phenol-modified rosins obtained by reacting resol-type phenol resin with natural rosin or rosin derivatives, etc. . As rosin ester, the esterification etc. which made the said rosin-type resin and polyhydric alcohol react, for example, are mentioned. Furthermore, the rosin phenol resin can also 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 terpene resins include terpene resins (α-pinene resin, β-pinene resin, limonene resin, etc.), terpene-phenol resin, aromatic modified terpene resin, 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 petroleum resins include: aliphatic (C5 series) petroleum resins, aromatic (C9 series) petroleum resins, aliphatic/aromatic copolymer series (C5/C9 series) petroleum resins, and hydrogenated products of these (For example, alicyclic petroleum resin obtained by hydrogenating aromatic petroleum resin), various modified products of these (for example, maleic anhydride modified products), 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 phenol resins include condensation products of various phenols and formaldehyde, such as phenol, m-cresol, 3,5-xylenol, p-alkylphenol, and resorcinol. As other examples of phenol resins, resol resins obtained by the addition reaction of the aforementioned phenols and formaldehyde under an alkali catalyst, or condensation reactions of the aforementioned phenols and formaldehyde under an acid catalyst can be cited Novolac, etc.

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 lavender-indene resins include lavender-indene resins, hydrogenated lavender-indene resins, phenol-modified lavender-indene resins, epoxy-modified lavender-indene resins, 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 ketone resins include ketones (for example, aliphatic ketones such as methyl ethyl ketone and methyl isobutyl ketone; aromatic ketones such as acetophenone; lipids such as cyclohexanone and methyl cyclohexanone). Cyclic ketone, etc.) and formaldehyde condensation ketone resin.

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 used is not particularly limited. For example, an adhesive imparting resin with a softening point of 60 to 160°C can be used. In addition, it is also possible to use adhesive-imparting resins that are liquid at room temperature. From the viewpoint of a well-balanced balance between cohesive force and low-temperature properties (such as unwinding or adhesion at low temperatures), it is preferable to use a softening point of about 60~140°C (more preferably about 80~120°C) Adhesive imparting resin. For example, it is preferable to use a petroleum resin having a softening point in the above-mentioned range. Furthermore, the softening point of the adhesion-imparting resin can be measured based on the softening point test method (Ring and Ball method) specified 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 contained in the adhesive layer to the adhesion-imparting resin is not particularly limited, and can be appropriately determined according to the application. Relative to the viscosity of 100 parts by weight of polymer The content of the imparted resin is based on a non-volatile content basis. For example, it can be set to about 20 parts by weight or more, and it is generally appropriate to set it to about 50 parts by weight or more. From the viewpoint of obtaining higher usage effects, the usage amount of the adhesion-imparting resin relative to 100 parts by weight of the polymer component can be set at about 80 parts by weight or more, or may be set at about 100 parts by weight or more. On the other hand, from the viewpoint of low-temperature characteristics and the like, it is generally appropriate to set the usage amount of the adhesion-imparting resin to 100 parts by weight of the polymer component to be about 200 parts by weight or less, and preferably to be about 150 parts by weight or less.

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 aforementioned adhesive layer may optionally contain viscosity modifiers (tackifiers, etc.), leveling agents, plasticizers, softeners, fillers, pigments or dyes and other colorants, light stabilizers, anti-aging agents, and anti-aging agents. Oxidizers, water-resistant agents, antistatic agents, foaming agents, defoamers, surfactants, preservatives, cross-linking agents, etc. are common additives in the field of adhesives.

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 previously known methods. For example, a method (direct method) of forming an adhesive layer by directly applying (typically coating) an adhesive composition on the substrate (typically a PVC film) as described above and drying it can be used. In addition, a method of forming an adhesive layer on the surface (peeling surface) by imparting an adhesive composition to a peelable surface (peeling surface) and drying it to form an adhesive layer on the surface and transferring the adhesive layer to the substrate (transfer India and France). These methods can also be combined. As the above-mentioned release surface, the surface of the release liner or the back surface of the supporting substrate after 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 coating the adhesive composition, for example, gravure roll coaters, reverse roll coaters, touch roll coaters, dip roll coaters, bar coaters, knife coaters, sprayers, etc. can be used. Or the usual coating machine. The adhesive layer is typically formed continuously, and according to the purpose and application, it can also be formed in regular or irregular patterns such as dots and stripes.

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 technology disclosed here, the thickness of the adhesive layer is not particularly limited, and it is generally appropriate to set it to about 100 μm or less (typically about 50 μm or less). From the viewpoint of thinning and weight reduction of the PVC adhesive tape, the thickness of the adhesive layer (typically a rubber-based adhesive layer) can be set to, for example, about 30 μm or less, preferably about 25 μm or less, and more preferably It is about 20 μm or less (typically about less than 20 μm, for example, about 18 μm or less). In addition, from the viewpoint of obtaining a suitable adhesive force, the thickness of the adhesive layer is usually approximately 3 μm or more, preferably approximately 5 μm or more (for example, approximately 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 technology disclosed here can preferably be in the form of a PVC adhesive tape whose thickness of the adhesive layer is 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). Implement. The thickness range of the above-mentioned adhesive layer can be preferably applied to PVC adhesive tapes used in the protection or bundling of electric wires, piping, etc., the coating of corrugated pipes as described above, and electrical insulation, etc., for example. Among them, in the PVC adhesive tape whose thickness of the support substrate is less than 100 μm (for example, less than 90 μm) and prepared into the form of the following adhesive tape roll, from the viewpoint of adjusting the unwinding force, the adhesive It is advantageous to set the thickness of the agent layer to the above-mentioned 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 configuration of the adhesive tape disclosed here is shown in FIG. 1. The PVC adhesive tape 1 shown in FIG. 1 is configured as a single-sided adhesive tape, which includes: a supporting substrate (such as a single-layer PVC film) 11 having a first side 11A and a second side 11B, and a first side Adhesive layer 21 on one side 11A. In a preferred aspect, the adhesive tape 1 before use (that is, before being attached to the adherend) can be, for example, as shown in FIG. The surface 11B abuts the adhesive layer 21, thereby protecting the shape of the adhesive tape roll of the surface (adhesive surface) 21A. Alternatively, it may be a form in which the surface 21A of the adhesive layer 21 is protected by a release liner whose at least the side facing the adhesive layer 21 becomes a release surface. As a release liner, a well-known or customary thing can be used without a restriction|limiting in particular. For example, it can be used for a release liner with a release treatment layer on the surface of a base material such as plastic film or paper, or a low-grade resin containing a fluorine-based polymer (polytetrafluoroethylene, etc.) or polyolefin-based resin (polyethylene, polypropylene, etc.) Adhesive material release liner, etc.

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 structural examples of the adhesive tape disclosed here are shown in FIG. 2. The adhesive tape 2 shown in FIG. 2 is configured as a double-sided adhesive tape, which is respectively provided with a first adhesive layer on the first side 11A and the second side 11B of the supporting substrate (such as a single-layer PVC film) 11 21 and second adhesion 剂层22。 Agent layer 22. The technology disclosed here can also be implemented preferably 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 here is characterized by a low-temperature tensile breaking elongation (tensile breaking elongation at -20°C) of 80% or more measured by the method described in the following examples. PVC adhesive tapes with such characteristics show high flexibility (stretchability) even at low temperatures, so they can be those that show good low temperature performance. The PVC adhesive tape, for example, is used in a wire harness to be wound around an electric wire, and it can suitably prevent cracks at low temperatures. From the viewpoint of obtaining higher low-temperature performance, the PVC adhesive tape having the above-mentioned low-temperature tensile elongation at break is about 100% or more (more preferably about 110% or more, for example, about 120% or more). The upper limit of the low temperature tensile elongation at break is not particularly limited. From the viewpoint of handling properties, the low-temperature tensile elongation at break is usually about 300% or less, preferably about 200% or less (for example, about 170% or less). The technology disclosed herein can be preferably implemented with the aforementioned low-temperature tensile elongation at break of approximately 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 supporting substrate and the adhesive layer) is not particularly limited. From the viewpoint of the thinning and weight reduction of the PVC adhesive tape, the technology disclosed here allows the total thickness of the PVC adhesive tape to be less than about 120μm (more preferably less than about 110μm, and even more preferably less than about 100μm. , For example, about less than 90μm) and preferably implemented. In addition, from the viewpoint of crack prevention properties at low temperatures, the thickness of the PVC adhesive tape is preferably about 55 μm or more, and it is usually preferably about 60 μm or more (more preferably about 70 μm or more, and even 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, from the viewpoint of the weight reduction of the PVC adhesive tape, the technology disclosed here allows the basis weight of the PVC adhesive tape to be about 120 g/m 2 or less, preferably about 110 g/m 2 or less, It is more preferably about 100 g/m 2 or less, for example, about 90 g/m 2 or less, and it is preferably implemented. In addition, from the viewpoint of crack prevention at low temperature, the basis weight of the PVC adhesive tape is more than about 55g/m 2 or more, and it is usually preferably about 60g/m 2 or more (more preferably about 70g). /m 2 or more, 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 technology disclosed here, the width of the PVC adhesive tape is not particularly limited, and can be appropriately set according to the purpose or application. The width of the above-mentioned PVC adhesive tape can be, for example, 5mm~55mm, usually 10mm~40mm, preferably 15mm~30mm (typically 15mm~25mm). In a PVC adhesive tape of such a width, the effect of applying the present invention can be suitably exerted. The technology disclosed here can be implemented preferably in the form of an adhesive tape roll formed by rolling a PVC adhesive tape with a width of about 19mm 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 here is not particularly limited. From the viewpoint of winding workability, it is advantageous that the diameter of the adhesive tape roll is not too large. From this point of view, the diameter of the adhesive tape roll is usually 20 cm or less (typically 5 cm to 20 cm). The technique disclosed here can be suitably implemented in the form of an adhesive tape roll with 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 here has excellent crack prevention properties at low temperatures, so it can be used in various fields requiring low-temperature performance. For example, it is suitable for the protection of electric wires, piping, etc., or corrugated pipe covering and electrical insulation for bundling, surrounding electric wires, etc. for protection. Among them, as a preferred application, it can be enumerated in wiring harnesses (such as wiring harnesses for automobiles and other vehicles, especially wiring harnesses for vehicles with internal combustion engines, etc.), wound around the wires (typically plural wires) constituting the wiring harness use. Here, in the case where the PVC adhesive tape is wound around the wires constituting the wire harness, it includes the case where the PVC adhesive tape is wound around the wires, or in a tube (such as a corrugated tube) that houses the above-mentioned wires. PVC adhesive tape is wrapped around it. In addition, the adhesive tape disclosed here is not limited to the above-mentioned use, and can also be used in various fields where PVC adhesive tape has been previously used, such as insulation and fixing between layers or outer surfaces of electrical parts (transformers, coils, etc.), electronic parts, etc. Appropriate use in fields such as, display, and recognition.

藉由該說明書而揭示之事項包括如下者。 The matters disclosed by this manual 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 arranged on at least one surface of the PVC film; and the tensile elongation at break at -20°C is 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 of (1) above, wherein the dynamic viscosity of the resin material constituting the PVC film is about 3000 Pa·s or less (typically about 3000 Pa·s or less and about 1000 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 of (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 of any one of (1) to (3) above, 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 (1) to (4) above, wherein the PVC film includes 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 of the above (5), wherein the elastomer contains one or two or more selected from the following compounds: (A) The chlorine content is about 25-50% by weight (for example, about 35-45% by weight) Chlorinated polyethylene, (B) (meth)acrylate-butadiene-styrene copolymer, (C) acrylonitrile with an acrylonitrile content of about 15-50% by weight (e.g., about 30-40% by weight) -Butadiene copolymer, and (D) an ethylene-vinyl acetate copolymer with a vinyl acetate content of about 30 to 75% by weight (for example, 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 of the above (5) or (6), wherein the content of the 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 of any one of (1) to (7) above, wherein the PVC film contains approximately 10% by weight or more and about 60% by weight or less of 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 of the above (8), wherein the plasticizer is selected from the group consisting of benzoate, phthalate, terephthalate, trimellitate, pyromellitic acid One or more of ester, adipate, sebacate, azelate, maleate, and citrate.

(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 (1) to (9) above, wherein the 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 of (10) above, 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 of the above (10) or (11), 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 of any one of (1) to (12) above, wherein the adhesive constituting the adhesive layer is selected from rubber-based adhesives, polyester-based adhesives, and urethane-based adhesives Agents, polyether adhesives and silicone adhesives.

(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 (1) to (13) above, wherein the adhesive layer is a rubber-based adhesive layer mainly composed of a rubber-based adhesive.

(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 of any one of (1) to (14) above, wherein the adhesive layer contains natural rubber and synthetic rubber (such as 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。 (16) The adhesive tape according to any one of (1) to (15) above, wherein the adhesive layer comprises a resin selected from the group consisting of rosin-based resins, petroleum resins, terpene-based resins, phenolic resins, and lavender-indene-based resins. Adhesion imparting resin of one or more types of resin and ketone 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。 (17) The adhesive tape of any one of (1) to (16) above, 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-based polymer 100 parts by weight of the polymer are 50 to 150 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 arranged 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 approximately less than 100 μm, for example, approximately 60 μm or more and approximately less than 90 μm), the above-mentioned PVC film contains an elastomer, a plasticizer, and a fatty acid metal salt, and the above-mentioned elastomer contains one or two or more selected from the following compounds: ( A) Chlorinated polyethylene with a chlorine content of about 25-50% by weight (for example, about 35-45% by weight), (B) (meth)acrylate-butadiene-styrene copolymer, (C) acrylonitrile The content is about 15-50% by weight (e.g., about 30-40% by weight) of acrylonitrile-butadiene copolymer, and (D) vinyl acetate content is about 30-75% by weight (e.g., about 50-65% by weight) ) The ethylene-vinyl acetate copolymer, 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 adhesive layer is a rubber-based 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 of the above (18), wherein the plasticizer is selected from the group consisting of benzoate, phthalate, terephthalate, trimellitate, pyromellitic acid One or more of ester, adipate, sebacate, azelate, maleate, and citrate.

(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 of (18) or (19) above, wherein the fatty acid metal salt is a metal stearate, a metal laurate, or a combination of a metal stearate and a metal laurate, and the PVC film The content of the above-mentioned 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。 (21) The adhesive tape according to any one of (18) to (20) above, wherein the rubber-based adhesive layer contains a rubber-based polymer and an adhesion-imparting resin, and the rubber-based polymer is 10:90~90: The weight ratio of 10 includes natural rubber and synthetic rubber (such as SBR), As the adhesion-imparting resin, a petroleum resin is contained in an amount of 50 to 150 parts by weight with respect to 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 of any one of (18) to (21) above 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 the adhesive tape of any one of (1) to (22) above wound around the electric wire.

[實施例] [Example]

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。 Hereinafter, some embodiments of the present invention will be described, but the present invention is not intended to be limited to those shown in this specific example. In addition, "parts" and "%" in the following description are based on weight 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 Kishita 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 Kishita 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: Diisononyl 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: Product of Kaneka Co., Ltd., (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: Product of Zeon Corporation, Japan, 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: Product of JSR Co., Ltd., acrylonitrile-butadiene copolymer, containing acrylonitrile The amount 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 Nippon Synthetic Chemical Industry Co., Ltd., ethylene-vinyl acetate copolymer, vinyl acetate content rate is 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: Product of JSR Co., Ltd., styrene-butadiene block copolymer, linear structure, 40% styrene content, grade name "TR2000"

<黏著帶之製作> <Making 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」。 Based on the solid content basis, 60 parts of SBR latex (product of Zeon Co., Ltd., trade name "Nipol LX426"), 40 parts of natural rubber latex (product of GOLDEN HOPE, trade name "HYTEX HA"), and 120 parts of petroleum resin emulsion The parts are mixed to prepare a water-dispersed rubber-based adhesive composition. As the above-mentioned 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. (Product of Kao Co., Ltd., trade name "EMULGEN 920") 3.5 parts and 46.5 parts of water, mixed and emulsified with a homomixer. Hereinafter, the above-mentioned adhesive composition will be 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」)。 The raw materials shown in Table 1 are made into the composition shown in Table 1 (that is, the fatty acid metal salt A1 is contained at a ratio of 0.10%, the plasticizer B1 is contained at a ratio of 25%, and the plasticizer is contained at a ratio of 6%. Elastomer E1, the remainder is the composition of PVC) and mixed. After kneading, it is formed into a long film shape with a thickness of 70μm at a molding temperature of 150°C by a calender molding machine. In this way, the PVC film (supporting substrate) of Example 1 was obtained. Here, as the PVC shown in Table 1, polyvinyl chloride with an average degree of polymerization of 1000 (Shin-Etsu Chemical Co., Ltd. Co., Ltd. product, 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。 Using a comma direct coater, apply the adhesive composition A on one surface of the PVC film, and dry it, and take it to a sufficient length for the following low-temperature winding test . The coating amount of the adhesive composition A was adjusted to form an adhesive layer with the thickness shown in Table 1 after drying. This was cut into a width of 19 mm (cut into a long strip) to obtain the adhesive tape of Example 1.

(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 composition of the PVC film (supporting base material) and the thickness of the adhesive layer were set as shown in Table 1. Except for this, the adhesives of Examples 2 to 8 and Comparative Examples 1 to 3 were produced in the same manner as in Example 1. belt.

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。 Furthermore, the PVC film of each example was extended to approximately twice the length in the direction of travel (MD), and the appearance was observed visually. 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 films 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 determination)

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 performed 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 filled in a piston with a volume of 1 cm 3 set at 160°C as a measurement sample The PVC film is melted, and the dynamic viscosity (unit: Pa) is calculated based on the flow rate (Q) when extruding from a die with a hole diameter (D) of 1mm and a length (L) of 1mm when a load of 40MPa (P) is applied (P) ‧S).

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

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。 The adhesive tape of each example was cut into a size of 10 mm in width and 100 mm in length to prepare measurement samples, and the tensile elongation at break at -20°C was measured based on the test method of "Plastic-Tensile Properties" described in JIS K 7161. The measuring equipment and measuring 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 50mm, and the stretching speed is 300mm/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。 Under the above conditions, each test sample is stretched in the length direction, according to the distance between the chucks X (mm) at the time point when the sample breaks, 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。 Prepare 10 thin-walled low-voltage wires for automobiles manufactured by Sumitomo Denso Co., Ltd. ``AVSS0.5'' cut into a length of 600mm and 4 pieces of thin-walled low-voltage wires for automobiles manufactured by Sumitomo Denso Co., Ltd. ``AVSS0. 85" cut into a length of 600mm. The 14 wires are collected together, and the two ends in the longitudinal direction are assembled and fixed with adhesive tapes in a way that facilitates the winding operation, and then the adhesive tapes of each example are wound by half laps on the outer circumference of the above-mentioned wires ( 19mm in width), and a sample for evaluation was prepared. The so-called semi-lap joint here refers to the winding state in which half of the width of the adhesive tape overlaps with half of the width of the wound adhesive tape when the adhesive tape is wound. Put the above evaluation sample into a glove box ("WU-200" manufactured by Espec Co., Ltd.) set at -20°C and keep it for 1 hour. The steel rod is wound around the circumference. Maintaining this state, visually observe whether the adhesive tapes (adhesive tapes wound around the outer circumference of the bundled wire by half-lap) cracks when wound around the steel rod 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 according to the following 3 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: Slight cracks are found, but the outer surface of the bundled wire is 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: Cracks at the level of the outer surface of the bundled wire can be seen (poor 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 composition of the adhesive tape of each example.

Figure 105110368-A0202-12-0031-1
Figure 105110368-A0202-12-0031-1

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 low-temperature tensile elongation at break of the adhesive tapes of Examples 1 to 8 is compared with the adhesive tapes of Comparative Examples 1 to 3 in the low temperature (-20°C) winding test. The crack prevention property is obviously good. The adhesive tapes of Examples 1, 2, 4, and 6 to 8 showed particularly high low-temperature cracking prevention properties.

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。 Furthermore, 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. As a result, it was confirmed that the adhesive tape had a low temperature stretch The tensile elongation at break is 125%, and it shows excellent crack prevention in the above-mentioned 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。 Above, specific examples of the present invention have been described in detail, but these are only examples and do not limit the scope of patent applications. The technology described in the scope of the patent application also includes various changes and modifications to the specific examples illustrated 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‧‧‧The 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 (7)

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；-20℃下之拉伸斷裂伸長率為80%以上，上述聚氯乙烯膜包含脂肪酸金屬鹽、彈性體及塑化劑，且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。 An adhesive tape comprising: a polyvinyl chloride film and an adhesive layer arranged on at least one surface of the polyvinyl chloride film; the tensile elongation at break at -20°C is more than 80%, and the polyvinyl chloride film includes Fatty acid metal salt, elastomer, and plasticizer, and 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. 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。 Such as the adhesive tape of claim 1, wherein the dynamic viscosity of the resin material constituting the above-mentioned polyvinyl chloride film is 3000 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。 Such as the adhesive tape of claim 1 or 2, wherein the thickness of the above-mentioned polyvinyl chloride film is 100 μm or less. 如請求項1或2之黏著帶，其基重為100g/m2以下。 For example, the adhesive tape of claim 1 or 2 has a basis weight of 100g/m 2 or less. 如請求項1或2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 of claim 1 or 2, 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或2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 of claim 1 or 2, wherein the polyvinyl chloride film contains 10% by weight or more and 60% by weight or less of a plasticizer. 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6中任一項之黏著帶。 A wire harness comprising an electric wire and an adhesive tape such as any one of claims 1 to 6 wound around the electric wire.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101555391A (en) * 2008-04-07 2009-10-14 日东电工株式会社 Adhesive sheet
CN102226067A (en) * 2011-05-16 2011-10-26 永一胶粘(中山)有限公司 Acrylate solvent-based pressure sensitive adhersive and product thereof

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JPS501584B1 (en) * 1967-03-27 1975-01-20
JPS55127479A (en) * 1979-03-24 1980-10-02 Nitto Electric Ind Co Ltd Tackifier for surface protection
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101555391A (en) * 2008-04-07 2009-10-14 日东电工株式会社 Adhesive sheet
CN102226067A (en) * 2011-05-16 2011-10-26 永一胶粘(中山)有限公司 Acrylate solvent-based pressure sensitive adhersive and product thereof

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