JPS63216737A - Surface protective material - Google Patents

Surface protective material

Info

Publication number
JPS63216737A
JPS63216737A JP5156987A JP5156987A JPS63216737A JP S63216737 A JPS63216737 A JP S63216737A JP 5156987 A JP5156987 A JP 5156987A JP 5156987 A JP5156987 A JP 5156987A JP S63216737 A JPS63216737 A JP S63216737A
Authority
JP
Japan
Prior art keywords
adhesive
surface protection
heat
protected
protection material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5156987A
Other languages
Japanese (ja)
Other versions
JPH0431862B2 (en
Inventor
一夫 泰磨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujimori Kogyo Co Ltd
Original Assignee
Fujimori Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujimori Kogyo Co Ltd filed Critical Fujimori Kogyo Co Ltd
Priority to JP5156987A priority Critical patent/JPS63216737A/en
Publication of JPS63216737A publication Critical patent/JPS63216737A/en
Publication of JPH0431862B2 publication Critical patent/JPH0431862B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 倉皇よ立豆凪公更 本発明は、アクリル樹脂、塩化ビニル樹脂、ポリカーボ
ネート樹脂等からなる合成樹脂板やポリエステルフィル
ムなどの被保護物の表面に貼着され、この被保護物表面
を保護するために用いられる感熱型の表面保護材に関す
る6 良来匹伎4 建築材料、包装材料等として用いられるアクリル樹脂、
塩化ビニル樹脂、ポリカーボネート樹脂等からなる合成
樹脂板やポリエステルフィルムは、運送時、作業時等に
表面に傷が付き易いため、それらの表面を感熱型のシー
ト状表面保護材で被覆し、保護することが行われている
[Detailed Description of the Invention] The present invention is applied to the surface of an object to be protected, such as a synthetic resin plate made of acrylic resin, vinyl chloride resin, polycarbonate resin, etc., or a polyester film. 6 Concerning heat-sensitive surface protection materials used to protect the surface of protected objects 4. Acrylic resins used as building materials, packaging materials, etc.
Synthetic resin plates and polyester films made of vinyl chloride resin, polycarbonate resin, etc. are easily scratched on the surface during transportation, work, etc., so their surfaces are protected by covering them with a heat-sensitive sheet-like surface protection material. things are being done.

従来、この種の感熱型表面保護材としては、紙や高密度
ポリエチレンフィルム等からなる基材の片面にエチレン
−酢酸ビニル共重合体(EVA)等からなる感熱性接着
剤を積層したもの、或いは低密度ポリエチレンの単体フ
ィルムからなるものなどが一般に用いられている。
Conventionally, this type of heat-sensitive surface protection material has been made by laminating a heat-sensitive adhesive made of ethylene-vinyl acetate copolymer (EVA) on one side of a base material such as paper or high-density polyethylene film, or Those made of a single film of low-density polyethylene are generally used.

■が ゛ しようとするnk しかし、これらの表面保護材を被保護物に貼着し、被保
護物を保存した場合、感熱性接着剤が経時劣化し、その
結果接着強度が上昇して被保護物からの保護材の剥離が
困難となったり、剥離後に被保護物表面に接着剤が残存
するなどの問題があった・ 本発明は、上記事情に鑑みなされたもので、貼着後にお
ける感熱性接着剤の接着力上昇が可及的に抑制され、こ
のため長期保存後でも被保護物から容易に剥離できると
共に、剥離後に被保護物表面に接着剤が残存することの
ない表面保護材を提供することを目的とする。
However, when these surface protection materials are attached to the object to be protected and the object is stored, the heat-sensitive adhesive deteriorates over time, and as a result, the adhesive strength increases and the object to be protected increases. There have been problems such as it being difficult to peel off the protective material from the object and adhesive remaining on the surface of the object to be protected after peeling off.The present invention was made in view of the above circumstances. The increase in the adhesive strength of the adhesive is suppressed as much as possible, so that it can be easily peeled off from the object to be protected even after long-term storage, and the adhesive does not remain on the surface of the object after being peeled off. The purpose is to provide.

(H古を ′するための−び′ 即ち、本発明者は、上記目的を達成するため感熱性接着
剤の経時劣化を防止することにつき鋭意研究を行った結
果、EVA等からなる感熱性接着剤にポリオレフィン系
樹脂を配合した場合、意外にもこのポリオレフィン系樹
脂が接着力上昇防止剤として作用し、接着後長期保存し
た場合でも接着力が上昇し雉いことを知見し、本発明を
なすに至った・ 従って、本発明は、基材の片面に感熱性接着剤からなる
接着層が積層され、この接着層を被保護物表面に貼着す
るようにした表面保護材において、上記接着層を感熱性
接着主剤に接着力上昇防止剤としてポリオレフィン系樹
脂を配合してなる接着剤で形成したことを特徴とする表
面保護材を提供することを目的とする。
In other words, in order to achieve the above object, the present inventor conducted extensive research into preventing the deterioration of heat-sensitive adhesives over time, and as a result, developed a heat-sensitive adhesive made of EVA, etc. It was discovered that when a polyolefin resin is blended into the adhesive, the polyolefin resin unexpectedly acts as an agent to prevent an increase in adhesive strength, and the adhesive strength increases even when stored for a long period of time after adhesion, resulting in the present invention. Therefore, the present invention provides a surface protection material in which an adhesive layer made of a heat-sensitive adhesive is laminated on one side of a base material, and this adhesive layer is attached to the surface of an object to be protected. An object of the present invention is to provide a surface protection material, which is formed of an adhesive comprising a heat-sensitive adhesive base compound and a polyolefin resin as an agent for preventing increase in adhesive strength.

本発明保護材は、EVA等の感熱性樹脂からなる感熱接
着主剤にポリオレフィン系樹脂を配合した接着剤を用い
たことにより、被保護物に貼着して保存した場合、ポリ
オレフィン系樹脂の作用で接着剤の接着力の経時的上昇
が抑制され、このため長期保存後でも接着剤の接着力が
接着時とほぼ同程度或いは多少上昇した程度に保たれて
いるので、被保護物から容易に剥離し得ると共に、被保
護物に接着剤を残存させることがないものである。
The protective material of the present invention uses an adhesive containing a polyolefin resin as a heat-sensitive adhesive base made of a heat-sensitive resin such as EVA. The increase in the adhesive strength of the adhesive over time is suppressed, and as a result, even after long-term storage, the adhesive strength of the adhesive is maintained at approximately the same level as at the time of adhesion, or slightly increased, so it can be easily peeled off from the object to be protected. In addition, the adhesive does not remain on the object to be protected.

以下、本発明につき更に詳しく説明する。The present invention will be explained in more detail below.

本発明の表面保護材は、基材片面の接着層を熱感応性接
着主剤に接着力上昇防止剤としてポリオレフィン系樹脂
を配合した接着剤により形成したものである。
In the surface protection material of the present invention, the adhesive layer on one side of the base material is formed of an adhesive containing a heat-sensitive adhesive base and a polyolefin resin as an adhesive force increase prevention agent.

この場合、基材としてはクラフト紙、上質紙等の紙類や
、高密度ポリエチレンやポリプロピレン等のプラスチッ
クフィルムなどを使用し得る。なお、基材の厚さは紙を
用いた場合は30〜150g / rd程度、プラスチ
ックフィルムの場合は20〜100p程度とすることが
好ましい。
In this case, the base material may be paper such as kraft paper or high-quality paper, or a plastic film such as high-density polyethylene or polypropylene. The thickness of the base material is preferably about 30 to 150 g/rd when paper is used, and about 20 to 100 g/rd when a plastic film is used.

また、感熱性接着主剤の種類、組成に特に制限はなく、
熱により接着性を示す樹脂であればいずれのものでも使
用し得るが、例えばEvA、スチレン−ブタジェン−ス
チレン共重合体、スチレン−イソプレン−スチレン共重
合体、エチレン−ポリプロピレンターポリマー等の1種
又は2種以上を好適に使用し得る。これらの中では特に
酢酸ビニルを10〜20%(重量%、以下同じ)程度含
有するEVAを用いることが好ましく、これにより被保
護物に対する適度な接着力を得ることができる。この場
合、酢酸ビニル量が10%未満であると接着強度か弱す
ぎて被保護物から保護材が浮いてしまうことがあり、2
0%を超えると接着強度が強すぎて被保護物から剥離で
きなくなる場合が生じる。
In addition, there are no particular restrictions on the type or composition of the heat-sensitive adhesive base,
Any resin can be used as long as it exhibits adhesive properties when heated; for example, one type of resin such as EvA, styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, ethylene-polypropylene terpolymer, etc. Two or more types can be suitably used. Among these, it is particularly preferable to use EVA containing about 10 to 20% (by weight, the same applies hereinafter) of vinyl acetate, which can provide a suitable adhesive force to the object to be protected. In this case, if the amount of vinyl acetate is less than 10%, the adhesive strength may be too weak and the protective material may float away from the object to be protected.
If it exceeds 0%, the adhesive strength may be so strong that it may not be possible to peel it off from the object to be protected.

本発明接着剤は、上記接着主剤にポリオレフィン系樹脂
を配合するものである。ここで、ポリオレフィン系樹脂
の種類に特に限定はないが、例えば低密度ポリエチレン
(分子鎖を有するもの及び直鎖状のものを含む)、中・
高密度ポリエチレン、ポリプロピレン等を使用し得る。
The adhesive of the present invention is one in which a polyolefin resin is blended with the above-mentioned main adhesive agent. Here, there is no particular limitation on the type of polyolefin resin, but for example, low-density polyethylene (including those with molecular chains and linear ones), medium-density polyethylene,
High density polyethylene, polypropylene, etc. can be used.

特に、密度0.918〜0.926g/a+?の低密度
ポリエチレンを用いることが好ましい。この場合、密度
が0.926g/ai?を超えると接着層の透明性が低
下したり、接着主剤との相溶性が悪くなる場合があり、
0.918g/cIiI未満であると、フィルム製膜時
にトラブルを生じ易い場合がある。
In particular, density 0.918-0.926g/a+? It is preferable to use low density polyethylene. In this case, the density is 0.926g/ai? If it exceeds this, the transparency of the adhesive layer may decrease or the compatibility with the main adhesive may deteriorate.
If it is less than 0.918 g/cIiI, troubles may easily occur during film formation.

また、接着主剤に対するポリオレフィン系樹脂の配合量
は限られないが、主剤の3〜20%の配合量とすること
が好適である。3%未満の場合は経時劣化が防止できず
、接着強度が強すぎて被保護物から保護材を剥離できな
くなることがあり、20%を超えると接着強度か弱すぎ
て被保護物から浮く場合が生じる。
Further, the amount of polyolefin resin to be blended with respect to the adhesive base material is not limited, but it is suitable that the blend amount is 3 to 20% of the base adhesive. If it is less than 3%, it will not be possible to prevent deterioration over time, and the adhesive strength will be too strong and the protective material may not be able to be peeled off from the object to be protected. If it exceeds 20%, the adhesive strength will be too weak and it may float away from the object to be protected. occurs.

なお、本発明接着剤には、必要に応じその他の適宜成分
、例えば接着力の調整のために界面活性剤、粘着付与剤
、導電性を付与するためにカーボンブラックなどを配合
しても差支えない。
It should be noted that the adhesive of the present invention may contain other appropriate components, such as a surfactant, a tackifier, and carbon black to impart conductivity, as necessary to adjust adhesive strength. .

また、接着剤の積層量に限定はないが、通常10〜50
g/ボ程度の積層量とすることが好ましい。
In addition, there is no limit to the amount of adhesive laminated, but it is usually 10 to 50.
It is preferable to set the amount of lamination to about 1 g/bo.

本発明保護材の製法は限定されず、公知の方法を採用し
得る。例えば基材として紙類を用いる場合は、基材の片
面に溶剤に溶解した接着剤を塗布し、これを乾燥するこ
となどにより得ることができる。また、基材がプラスチ
ックフィルムの場合は、インフレーション法により基材
及び接着層を共押出しすることなどにより得ることがで
きる。
The method for manufacturing the protective material of the present invention is not limited, and any known method may be employed. For example, when paper is used as the base material, it can be obtained by applying an adhesive dissolved in a solvent to one side of the base material and drying it. Furthermore, when the base material is a plastic film, it can be obtained by coextruding the base material and the adhesive layer using an inflation method.

本発明保護材を使用する場合、例えば押出し法により製
造されたアクリル板等の合成樹脂板に保護材を貼着する
場合には、押出し直後の35〜85℃程度に加温された
合成樹脂板表面に加圧して貼着せしめて保護する。これ
により、容易に貼着でき、経時によっても接着強度が上
昇することもなく、保護材を貼着したままでも加工適性
が良いものである。
When using the protective material of the present invention, for example, when attaching the protective material to a synthetic resin board such as an acrylic board manufactured by an extrusion method, the synthetic resin board is heated to about 35 to 85°C immediately after extrusion. Protect by applying pressure to adhere to the surface. As a result, it can be easily attached, the adhesive strength does not increase over time, and the processability is good even when the protective material is attached.

ここで、本発明保護材の保護対象は限定されないが、特
にアクリル樹脂、ポリカーボネート樹脂。
Here, the objects to be protected by the protective material of the present invention are not limited, but are particularly applicable to acrylic resins and polycarbonate resins.

ポリ塩化ビニル樹脂、ポリスチレン樹脂等からなる合成
胡脂板やポリエステルフィルムといったプラスチック製
品に対して好適に使用し得、本発明シートによればプラ
スチック製品表面を確実に保護できる。
It can be suitably used for plastic products such as synthetic sesame plates and polyester films made of polyvinyl chloride resin, polystyrene resin, etc., and the sheet of the present invention can reliably protect the surface of plastic products.

充12j党釆− 以上説明したように1本発明表面保護材は、被保護物に
貼着した後保存中に接着剤の接着力が上昇し難く、従っ
て長期保存後でも被保護物から容易に剥離し得、しかも
剥離時に被保護物に接着剤が残存しないもので1合成樹
脂板等の表面保護に好適に使用されるものである。
As explained above, the adhesive strength of the adhesive of the surface protection material of the present invention does not easily increase during storage after being applied to the object to be protected, and therefore it is easily removed from the object even after long-term storage. It can be peeled off, and no adhesive remains on the object to be protected when it is peeled off, so it is suitable for use in protecting the surface of synthetic resin plates and the like.

次に、実施例と比較例により本発明を具体的に示すが、
本発明は下記の実施例に制限されるものではない。
Next, the present invention will be specifically illustrated by Examples and Comparative Examples.
The invention is not limited to the following examples.

害】1生ユ遺」U殊 下記表に示す酢酸ビニル含有量のエチレン−酢酸ビニル
共重合体(三井石油化学社製H2O41)に対して密度
0.919g/ccの低密度ポリエチレン(住人化学社
製F2O1−1)を下記表に示す配合量で混合した感熱
性接着剤となる混合樹脂と。
[Harm] 1 Lifestyle Remains U Special Low-density polyethylene with a density of 0.919 g/cc (Suminami Chemical Co., Ltd.) is used for the ethylene-vinyl acetate copolymer (H2O41 manufactured by Mitsui Petrochemical Co., Ltd.) with the vinyl acetate content shown in the table below. A mixed resin that becomes a heat-sensitive adhesive is prepared by mixing F2O1-1) in the amount shown in the table below.

基材となる高密度ポリエチレンとを通常のインフレーシ
ョン法により共押出しして厚さ50声の下記表に示す表
面保護材をそれぞれ得た。
The high-density polyethylene used as a base material was coextruded by a conventional inflation method to obtain the surface protection materials shown in the table below each having a thickness of 50 degrees.

次に、これら保護材の感熱性接着剤塗布面を、押出され
た表面温度60℃のアクリル板の両面に加圧ロールを用
い貼着積層して、アクリル板表面を保護すると共に、表
面保護材とアクリル板との貼着直後及び温度40℃、湿
度90%中で経時させた時の接着強度をそれぞれ測定し
た。結果を下記表及び図面に示す。なお、図中aは実施
例1、bは実施例2、Cは比較例2、dは比較例3、e
は比較例4の結果をそれぞれ示す。この場合、接着力の
好適範囲は2ケ月経過時において30〜300 g /
 25 mであり、300 g / 25 mmより大
きいと接着強度が高すぎ、30 g / 25 rmよ
り低いと浮き等の原因となる。
Next, the heat-sensitive adhesive-coated surfaces of these protective materials were laminated using a pressure roll on both sides of an extruded acrylic board with a surface temperature of 60°C to protect the acrylic board surface and to protect the surface of the acrylic board. The adhesive strength was measured immediately after adhesion to the acrylic plate and after aging at a temperature of 40° C. and a humidity of 90%. The results are shown in the table and drawings below. In addition, in the figure, a is Example 1, b is Example 2, C is Comparative Example 2, d is Comparative Example 3, and e
shows the results of Comparative Example 4, respectively. In this case, the preferred range of adhesive strength is 30 to 300 g / 2 months after 2 months have passed.
If it is larger than 300 g / 25 mm, the adhesive strength is too high, and if it is lower than 30 g / 25 rm, it will cause lifting.

表 表の結果より1本発明保護材は長期保存しても接着力が
上昇しにくいことが認められる。
From the results shown in Table 1, it is recognized that the adhesive strength of the protective material of the present invention does not easily increase even after long-term storage.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は表面保護材をプラスチック板に貼着した場合にお
ける接着剤の接着力の経時変化を示すグラフである。 出願人  藤 森 工 業 株式会社 代理人  弁理士  小 島 隆 同 時   間
The figure is a graph showing changes over time in the adhesive strength of an adhesive when a surface protection material is attached to a plastic plate. Applicant Fujimori Kogyo Co., Ltd. Agent Patent attorney Takashi Kojima Simultaneous period

Claims (1)

【特許請求の範囲】 1、基材の片面に感熱性接着剤からなる接着層が積層さ
れ、この接着層を被保護物表面に貼着するようにした表
面保護材において、上記接着層を感熱性接着主剤に接着
力上昇防止剤としてポリオレフィン系樹脂を配合してな
る接着剤で形成したことを特徴とする表面保護材。 2、感熱性接着主剤が10〜20重量%の酢酸ビニルを
含有するエチレン−酢酸ビニル共重合体である特許請求
の範囲第1項記載の表面保護材。 3、ポリオレフィン系樹脂が密度0.918〜0.92
6g/ccの低密度ポリエチレンである特許請求の範囲
第1項又は第2項記載の表面保護材4、接着剤が感熱性
接着主剤に対してポリオレフィン系樹脂を3〜20重量
%配合したものである特許請求の範囲第1項乃至第3項
いずれか記載の表面保護材。
[Claims] 1. In a surface protection material in which an adhesive layer made of a heat-sensitive adhesive is laminated on one side of a base material and this adhesive layer is attached to the surface of an object to be protected, the adhesive layer is 1. A surface protection material characterized in that it is made of an adhesive comprising a polyolefin resin as an adhesive strength increase preventive agent mixed with a primary adhesive agent. 2. The surface protection material according to claim 1, wherein the heat-sensitive adhesive main agent is an ethylene-vinyl acetate copolymer containing 10 to 20% by weight of vinyl acetate. 3. Polyolefin resin has a density of 0.918 to 0.92
The surface protection material 4 according to claim 1 or 2, which is a low density polyethylene of 6 g/cc, and the adhesive is a mixture of 3 to 20% by weight of a polyolefin resin based on the heat-sensitive adhesive base material. A surface protection material according to any one of claims 1 to 3.
JP5156987A 1987-03-06 1987-03-06 Surface protective material Granted JPS63216737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5156987A JPS63216737A (en) 1987-03-06 1987-03-06 Surface protective material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5156987A JPS63216737A (en) 1987-03-06 1987-03-06 Surface protective material

Publications (2)

Publication Number Publication Date
JPS63216737A true JPS63216737A (en) 1988-09-09
JPH0431862B2 JPH0431862B2 (en) 1992-05-27

Family

ID=12890595

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5156987A Granted JPS63216737A (en) 1987-03-06 1987-03-06 Surface protective material

Country Status (1)

Country Link
JP (1) JPS63216737A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0515167A2 (en) * 1991-05-20 1992-11-25 Tenza Limited Laminating process and apparatus and use thereof
WO2009098976A1 (en) * 2008-02-05 2009-08-13 Du Pont-Mitsui Polychemicals Co., Ltd. Tacky resin composition and pressure-sensitive adhesive film or sheet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753393A (en) * 1980-09-17 1982-03-30 Kyodo Printing Co Ltd Form booklet with sheath body
JPS5813594A (en) * 1981-07-17 1983-01-26 Grelan Pharmaceut Co Ltd Phosphonodipeptide derivative

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753393A (en) * 1980-09-17 1982-03-30 Kyodo Printing Co Ltd Form booklet with sheath body
JPS5813594A (en) * 1981-07-17 1983-01-26 Grelan Pharmaceut Co Ltd Phosphonodipeptide derivative

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0515167A2 (en) * 1991-05-20 1992-11-25 Tenza Limited Laminating process and apparatus and use thereof
WO2009098976A1 (en) * 2008-02-05 2009-08-13 Du Pont-Mitsui Polychemicals Co., Ltd. Tacky resin composition and pressure-sensitive adhesive film or sheet
US8497321B2 (en) 2008-02-05 2013-07-30 Du Pont-Mitsui Polychemicals Co., Ltd. Tacky resin composition and pressure-sensitive adhesive film or sheet

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