JPS6126048Y2 - - Google Patents
Info
- Publication number
- JPS6126048Y2 JPS6126048Y2 JP7240780U JP7240780U JPS6126048Y2 JP S6126048 Y2 JPS6126048 Y2 JP S6126048Y2 JP 7240780 U JP7240780 U JP 7240780U JP 7240780 U JP7240780 U JP 7240780U JP S6126048 Y2 JPS6126048 Y2 JP S6126048Y2
- Authority
- JP
- Japan
- Prior art keywords
- resin layer
- paper
- release
- release paper
- resin
- 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.)
- Expired
Links
- 229920005989 resin Polymers 0.000 claims description 44
- 239000011347 resin Substances 0.000 claims description 44
- -1 polypropylene Polymers 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 38
- 239000000123 paper Substances 0.000 description 35
- 239000002649 leather substitute Substances 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 7
- 239000010985 leather Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 229920005749 polyurethane resin Polymers 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】
本考案は、合成皮革の製造に適し、特に傷や、
艷ムラのない平滑な合成皮革面を与えることので
きる積層型離型紙に関する。[Detailed description of the invention] The invention is suitable for the production of synthetic leather, and is particularly suitable for preventing scratches and
This invention relates to a laminated release paper that can provide a smooth synthetic leather surface without unevenness.
合成皮革を製造するために、離型紙上にプリウ
レタン樹脂その他の皮革様樹脂層を形成するため
の樹脂を塗布し、樹脂層形成後、離型紙を剥離す
ることにより皮革面を与える方法が広く採用され
ている。このような合成皮革製造用離型紙として
は、紙にクレーコート層あるいはポリエチレン樹
脂層を設けた上にシリコーン樹脂被膜を形成した
もの、または紙上にポリプロピレン樹脂等の離型
性樹脂層を設けたもの等が使用され、これらは必
要に応じてエンボス加工を行つたのち使用に供さ
れてきた。 In order to produce synthetic leather, a widely used method is to apply a preurethane resin or other resin to form a leather-like resin layer on a release paper, and after forming the resin layer, to peel off the release paper to give a leather surface. It has been adopted. Such release paper for synthetic leather production includes paper with a clay coat layer or polyethylene resin layer on which a silicone resin coating is formed, or paper with a release resin layer such as polypropylene resin. etc., and these have been used after being embossed as necessary.
しかしながら、ポリプロピレン等の離型性樹脂
層を設けた離型紙を、特にエンボス加工せず平滑
な状態で使用する場合、これら樹脂層の表面強度
が比較的弱いため、合成皮革製造に使用する以前
の段階で、表面に引つかき傷あるいは艷ムラ等が
発生し易いという欠点がある。このような離型紙
を用いて合成皮革を製造した場合には、離型紙の
剥離後の皮革面に、このような傷や艷ムラが転写
されるため、製品の外観を損ね商品価値を低下さ
せることになる。 However, when release paper with a release resin layer such as polypropylene is used in a smooth state without being embossed, the surface strength of these resin layers is relatively weak. There is a drawback that scratches or unevenness on the surface are likely to occur during the process. When synthetic leather is manufactured using such release paper, such scratches and unevenness are transferred to the leather surface after the release paper is peeled off, impairing the appearance of the product and reducing its commercial value. It turns out.
本考案は、上述した欠点について改良され、傷
や艷ムラのない合成皮革面を与えることのできる
離型紙を提供せんとするものである。 The present invention aims to improve the above-mentioned drawbacks and to provide a release paper that can provide a synthetic leather surface with no scratches or unevenness.
本考案者の研究によれば、このような目的は、
上述した離型性樹脂層上に、この離型性樹脂層に
対して易剥離性を示す樹脂からなる保護層を形成
し、合成皮革製造の直前に保護層を剥離して、平
滑な離型性樹脂層面を出すようにした離型紙構造
体により達成されることが見出された。より詳し
くは本考案の離型紙は、紙上に、ポリプロピレ
ン、ポリ４−メチルペンテン−１およびポリブチ
レンテレフタレートから選ばれた離型性樹脂層
と、ポリエチレンおよびエチレン−酢酸ビニル共
重合体から選ばれた剥離性保護樹脂層との共押出
層を形成したことを特徴とするものである。 According to the inventor's research, these purposes are:
A protective layer made of a resin that exhibits easy peelability is formed on the above-mentioned mold-releasing resin layer, and the protective layer is peeled off immediately before synthetic leather production to ensure smooth mold release. It has been found that this can be achieved by using a release paper structure in which the surface of the adhesive resin layer is exposed. More specifically, the release paper of the present invention has a release resin layer selected from polypropylene, poly4-methylpentene-1, and polybutylene terephthalate on paper, and a release resin layer selected from polyethylene and ethylene-vinyl acetate copolymer. It is characterized by forming a coextruded layer with a peelable protective resin layer.
以下、本考案を図面を参照しつつより詳しく説
明する。 Hereinafter, the present invention will be explained in more detail with reference to the drawings.
図面は、本考案の離型紙の一実施例の部分断面
図である。離型紙は、紙基材１上に、離型性樹脂
層２および保護樹脂層３を順次形成してなる。 The drawing is a partial sectional view of an embodiment of the release paper of the present invention. The release paper is formed by sequentially forming a release resin layer 2 and a protective resin layer 3 on a paper base material 1.
基材の紙１としては、クラフト紙、コート紙、
上質紙等、適当な支持特性を有する任意の紙が用
いられ、合成紙も用いられる。 As the base paper 1, kraft paper, coated paper,
Any paper with suitable support properties can be used, such as wood-free paper, and even synthetic papers.
離型性樹脂層２は、ポリプロピレン、ポリ４−
メチルペンテン−１またはポリブチレンテレフタ
レートあるいはこれらの二種以上から構成され
る。これら樹脂は、合成皮革製造に使用されるポ
リウレタン樹脂に対し、剥離能力を有し、耐熱性
ならびに紙上に樹脂膜を設けるに適した加工適性
を有する。また本考案の離型紙の製造に当り樹脂
膜を形成するに適した、押出適性をも有する。 The mold release resin layer 2 is made of polypropylene, poly4-
It is composed of methylpentene-1, polybutylene terephthalate, or two or more thereof. These resins have peeling ability with respect to polyurethane resins used in the production of synthetic leather, heat resistance, and processability suitable for forming a resin film on paper. It also has extrusion suitability suitable for forming a resin film in producing the release paper of the present invention.
市販の押出コーテイング用グレードが好ましく
用いられる。 Commercially available extrusion coating grades are preferably used.
離型性樹脂層２は、好ましくは20〜40μｍの厚
みに形成される。 The mold release resin layer 2 is preferably formed to have a thickness of 20 to 40 μm.
保護樹脂層３は、ポリエチレンまたはエチレ
ン／酢酸ビニル共重合体あるいはこれらの混合物
から構成される。 The protective resin layer 3 is made of polyethylene, ethylene/vinyl acetate copolymer, or a mixture thereof.
これら樹脂は、上述した離型性樹脂に対して、
仮接着し、かつ押出ラミネート加工適性が有り、
しかも安価である。なおエチレン／酢酸ビニル共
重合体を使用した場合酢酸ビニル含量の高いほう
が仮接着強度が強くなるが、本考案の目的にはエ
チレン／酢酸ビニル共重合体と、ポリエチレンを
混合し、酢酸ビニル含量が３〜７％となるように
配合して使用する事が特に好ましい。保護樹脂層
３は通常５〜20μｍ程度の厚みに形成される。５
μｍ未満では剥離が困難となるが、上限は特に臨
界的ではなく経済性によつて定まる。 These resins are different from the above-mentioned mold release resins.
Suitable for temporary adhesion and extrusion lamination processing,
Moreover, it is inexpensive. Note that when using an ethylene/vinyl acetate copolymer, the higher the vinyl acetate content, the stronger the temporary adhesive strength, but for the purpose of this invention, the ethylene/vinyl acetate copolymer and polyethylene are mixed, and the vinyl acetate content is It is particularly preferable to use it in a proportion of 3 to 7%. The protective resin layer 3 is usually formed to have a thickness of about 5 to 20 μm. 5
If the thickness is less than μm, peeling becomes difficult, but the upper limit is not particularly critical and is determined by economic efficiency.
離型性樹脂層２と保護樹脂層３は紙１上に共押
出により形成される。これは、紙上に離型性樹脂
層２を一旦形成した後、その上に保護樹脂層３を
形成する段階ですでに傷や、艷ムラが発生し、本
来の目的が達成されないからである。 The releasable resin layer 2 and the protective resin layer 3 are formed on the paper 1 by coextrusion. This is because after the mold release resin layer 2 is once formed on the paper, scratches and unevenness occur already at the stage of forming the protective resin layer 3 thereon, and the original purpose cannot be achieved.
各樹脂の押出条件について述べれば、離型性樹
脂層は紙との接着及び離型性の均衡を取るため
290゜〜315゜の押出温度が好ましい。保護樹脂層
の押出温度は260〜315℃が良い。 Regarding the extrusion conditions for each resin, the releasable resin layer is designed to balance adhesion with paper and releasability.
Extrusion temperatures of 290° to 315° are preferred. The extrusion temperature of the protective resin layer is preferably 260 to 315°C.
得られた離型紙は、使用直前に保護樹脂層３を
剥離し、現出した離型性樹脂層２の表面に皮革層
形成樹脂を塗布し、更に起毛布等の支持材層を貼
付し、皮革層が形成された後に、離型紙を剥離す
る方法により合成皮革の製造に供される。 Immediately before using the obtained release paper, the protective resin layer 3 is peeled off, a leather layer forming resin is applied to the surface of the exposed release resin layer 2, and a supporting material layer such as a raised fabric is further attached. After the leather layer is formed, synthetic leather is manufactured by peeling off the release paper.
上述したように本考案によれば、紙上に離型性
樹脂層と剥離性保護樹脂層との共押出層を設ける
ことにより、傷や艷ムラのない平滑な合成皮革用
樹脂の被塗布面を形成可能な離型紙が提供され
る。 As described above, according to the present invention, by providing a coextruded layer of a releasable resin layer and a releasable protective resin layer on paper, a smooth surface to be coated with synthetic leather resin without scratches or unevenness can be obtained. A formable release paper is provided.
以下、その製造使用例により、本考案の離型紙
をより具体的に説明する。 Hereinafter, the release paper of the present invention will be explained in more detail with reference to examples of its manufacture and use.
例
坪量100ｇ／m2の哂クラフト紙に、ポリプロピ
レン（三井石油化学製LA221）及びポリエチレン
（三井ポリケミカル製Ｍ−11）を、それぞれ押出
ダイス温度305℃および305℃で共押出し、30μｍ
および15μｍの膜厚の共押出層を形成したマルチ
マニホールドダイスを使用し、押出速度は50ｍ／
分とした）。Example: Polypropylene (Mitsui Petrochemicals LA221) and polyethylene (Mitsui Polychemicals M-11) are coextruded onto kraft paper with a basis weight of 100g/ m2 at extrusion die temperatures of 305°C and 305°C, respectively, to a thickness of 30 μm.
A multi-manifold die with a coextrusion layer of 15 μm thickness was used, and the extrusion speed was 50 m/min.
).
得られた離型紙よりポリエチレン膜を除去する
ことにより均一なポリプロピレン樹脂層の艷面が
現出した。このポリプロピレン樹脂層上に、ポリ
ウレタン樹脂溶液（大日精化製レザミンME88を
黒色に着色したもの）を樹脂分として150ｇ／m2
の割合で塗布し、130℃で３分間乾燥した。さら
にこの上から二液硬化型ポリウレタン樹脂（日本
ポリウレタン製ニツポラン5034と日本ポリウレタ
ン製コロネートＬとの100：７混合液）を50ｇ／
m2の割合で塗布し、起毛布を貼つてから140℃で
３分間乾燥ならびに熟成した。 By removing the polyethylene film from the release paper, a uniform polypropylene resin layer was revealed on the surface. On this polypropylene resin layer, a polyurethane resin solution (Lezamin ME88 manufactured by Dainichiseika Chemical Co., Ltd., colored black) was applied as a resin content of 150 g/m 2 .
and dried at 130°C for 3 minutes. On top of this, add 50 g of two-component curing polyurethane resin (a 100:7 mixture of Nipporan 5034 manufactured by Nippon Polyurethane and Coronate L manufactured by Nippon Polyurethane).
It was coated at a ratio of m 2 , a raised cloth was applied, and then dried and aged at 140°C for 3 minutes.
得られた積層体から離型紙を剥離することによ
り、傷や艷ムラがなく外観の優れた皮革面を有す
る合成皮革が得られた。 By peeling off the release paper from the obtained laminate, a synthetic leather having a leather surface with excellent appearance and no scratches or unevenness was obtained.
図面は本考案の実施例にかかる離型紙の概念的
断面構造を示す部分断面図である。
１……紙基材、２……離型性樹脂層、３……保
護樹脂層。
The drawing is a partial sectional view showing a conceptual cross-sectional structure of a release paper according to an embodiment of the present invention. 1...Paper base material, 2...Releasable resin layer, 3...Protective resin layer.
Claims (1)
ン−１およびポリブチレンテレフタレートから選
ばれた離型性樹脂層と、ポリエチレンおよびエチ
レン／酢酸ビニル共重合体から選ばれた剥離性保
護樹脂層との共押出層を形成したことを特徴とす
る、離型紙。 A coextruded layer of a releasable resin layer selected from polypropylene, poly4-methylpentene-1, and polybutylene terephthalate and a releasable protective resin layer selected from polyethylene and ethylene/vinyl acetate copolymer is formed on paper. A release paper characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7240780U JPS6126048Y2 (en) | 1980-05-26 | 1980-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7240780U JPS6126048Y2 (en) | 1980-05-26 | 1980-05-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56173442U JPS56173442U (en) | 1981-12-21 |
| JPS6126048Y2 true JPS6126048Y2 (en) | 1986-08-05 |
Family
ID=29665817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7240780U Expired JPS6126048Y2 (en) | 1980-05-26 | 1980-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6126048Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10114036A (en) * | 1996-10-14 | 1998-05-06 | Teijin Ltd | Release film |
-
1980
- 1980-05-26 JP JP7240780U patent/JPS6126048Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56173442U (en) | 1981-12-21 |
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