JPS63126739A - Laminate - Google Patents
LaminateInfo
- Publication number
- JPS63126739A JPS63126739A JP27286486A JP27286486A JPS63126739A JP S63126739 A JPS63126739 A JP S63126739A JP 27286486 A JP27286486 A JP 27286486A JP 27286486 A JP27286486 A JP 27286486A JP S63126739 A JPS63126739 A JP S63126739A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- laminate
- polypropylene resin
- foam sheet
- sheet
- 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
Links
- -1 polypropylene Polymers 0.000 claims description 27
- 239000004743 Polypropylene Substances 0.000 claims description 26
- 229920001155 polypropylene Polymers 0.000 claims description 26
- 239000006260 foam Substances 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 239000000463 material Substances 0.000 description 5
- 238000003856 thermoforming Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
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】
産呈上久五里盆＃
本発明は、熱成形材料として特に有用な、断熱性積層体
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermally insulating laminate that is particularly useful as a thermoforming material.
従来の技術
薄い発泡プラスチックシートの両面に無発泡のプラスチ
ックシートを積層したものは多数知られている。しかし
ながら、従来のこの種積層体は、発泡シートの表面もし
くは全体の強化のために積層体としたものが普通である
から、透明性が考慮されることはなかった。2. Description of the Related Art There are many known products in which non-foamed plastic sheets are laminated on both sides of a thin foamed plastic sheet. However, in conventional laminates of this kind, transparency has not been taken into account since the laminate is usually used to strengthen the surface or the entire foam sheet.
明が解決しようとする問題点
本発明の目的は、上述のように不透明な従来の発泡プラ
スチックシート積層体とは異なり、積層体の向こう側に
ある物体を透視可能な程度に透明でしかも熱成形が可能
な、したがって各種断熱性容器、包装用容器等の成形材
料として有用な積層体を提供することにある。The purpose of the present invention is to create a thermoformable plastic sheet that is transparent enough to allow objects on the other side of the laminate to be seen through, unlike conventional foamed plastic sheet laminates that are opaque as described above. The object of the present invention is to provide a laminate that can be used as a molding material for various heat-insulating containers, packaging containers, etc.
問題点を解決するための手段
本発明が提供する積層体は、密度が０．０５ｇ／ｃ１１
１３以下、厚さが０．３〜３龍であり且つ厚さ方向の平
均気泡数が３以下であるポリプロピレン系樹脂発泡シー
トの両面に、厚さ０．２〜１關のポリプロピレン系樹脂
無発泡シートが接着されてなるものである。Means for Solving the Problems The laminate provided by the present invention has a density of 0.05 g/c11
13 or less, the thickness is 0.3 to 3, and the average number of cells in the thickness direction is 3 or less. It is made of sheets glued together.
ここで“厚さ方向の平均気泡数”とは、厚さ方向に積み
重なって存在する泡の数を発泡シートの切断面をシート
の両端から１０ＩｌｌＩ１１と中央部について長さ方向
３００＋＋＋ｍ毎に３点顕微鏡下に厚み方向の平均気泡
径ｄｔ （ｍｍ）、シートの平均厚みＤ（鰭）を測定し
、式Ｄ／ｄｔで計算した値である。Here, the "average number of bubbles in the thickness direction" refers to the number of bubbles that are piled up in the thickness direction.The cut surface of the foam sheet is 10IllI11 from both ends of the sheet, and the central part is measured using a three-point microscope every 300+++m in the length direction. The average cell diameter dt (mm) in the thickness direction and the average thickness D (fin) of the sheet are measured below, and the values are calculated using the formula D/dt.
本発明による積層体の中でも特に好ましいものは、積層
体全体の厚さが０．７〜５■であり、ポリプロピレン系
樹脂発泡シート層の厚さＤ「とポリプロピレン系樹脂無
発泡シート層２層の合計厚さＤｎとの間に
０．２ ＜ Ｄｆ／Ｄｎ ＜ ５
の関係があるものである。Among the laminates according to the present invention, particularly preferred is one in which the thickness of the entire laminate is 0.7 to 5 cm, and the thickness of the polypropylene resin foam sheet layer is D'' and the two layers of the polypropylene resin non-foam sheet layer. The relationship with the total thickness Dn is 0.2<Df/Dn<5.
本発明による積層体を構成するポリプロピレン系樹脂発
泡シートの素材としては、通常のアイソタクチックポリ
プロピレンのほか、エチレン／プロピレンランダム共重
合体、エチレン／プロピレンブロック共重合体、ポリプ
ロピレンとポリエチレンとの混合物、プロピレンと他の
オレフィンの共重合体等が使われる。これらのポリプロ
ピレン系樹脂より上記発泡シートを製造する方法は任意
であって、なんら限定されるものではない。発泡シート
の発泡構造は上述のとおりとするが、特に好ましい構造
は、密度０ 、０３５ ｇｉｃＩ１１３以下、厚さ方向
の平均気泡数が約１〜３のものである。In addition to ordinary isotactic polypropylene, materials for the polypropylene resin foam sheet constituting the laminate according to the present invention include ethylene/propylene random copolymers, ethylene/propylene block copolymers, mixtures of polypropylene and polyethylene, Copolymers of propylene and other olefins are used. The method for producing the foamed sheet from these polypropylene resins is arbitrary and is not limited in any way. The foamed structure of the foamed sheet is as described above, but a particularly preferred structure is one with a density of 0.035 gicI113 or less and an average number of cells in the thickness direction of about 1 to 3.
また、本発明の積層体を構成するポリプロピレン系樹脂
無発泡シートとしては、上記発泡シートに使用可能な素
材と同様の素材の中から選ばれた素材（これは発泡シー
トに使用するものと同一でもよく異なるものでもよい）
から作られた無延伸シートまたは延伸シートが用いられ
る。ポリプロピレン 。In addition, the non-foamed polypropylene resin sheet constituting the laminate of the present invention is selected from materials similar to those that can be used for the foamed sheet (this may be the same as that used for the foamed sheet). (may be different)
An unstretched sheet or a stretched sheet made from Polypropylene.
系樹脂発泡シートの両表面に配置されるこのシート２枚
は、同じものでもよく、また異なっていてもよい。The two sheets placed on both surfaces of the resin foam sheet may be the same or different.
ポリプロピレン系樹脂発泡シーＹとポリプロピレン系樹
脂無発泡シートとを接着して本発明の積層体とする方法
も任意であるが、熱成形に耐える接着強度を達成し得る
ようにし、また、透明性低下を招くような方法は採用し
ないことが望ましい。好ましい積層方法は、押出ラミネ
ート熱接着法およびドライラミネート法である。発泡能
を有する無発泡ポリプロピレン系シートとポリプロピレ
ン系樹脂シート （発泡しておらず発泡能もないもの）
を加熱下に積層して発泡させてもよ１１１゜
弁−■
本発明の積層体において、ポリプロピレン系樹脂発泡シ
ートは、その限定された厚さおよび発泡状態に基づき、
断熱性のよい発泡シートでありながら透明性を示す（厚
さが０．３〜３■でも、厚さ方向の平均気泡数が３をこ
えるものは、透視可能なほど透明ではない。発泡倍率が
２０倍未満のものは、透明性は良くても断熱性が劣る。Although the method of bonding the polypropylene resin foam sheet Y and the polypropylene resin non-foam sheet to form the laminate of the present invention is optional, it is possible to achieve adhesive strength that can withstand thermoforming, and to reduce transparency. It is desirable not to adopt methods that may lead to Preferred lamination methods are extrusion lamination thermal bonding and dry lamination. Non-foamed polypropylene sheets and polypropylene resin sheets with foaming ability (non-foamed and without foaming ability)
In the laminate of the present invention, the polypropylene resin foam sheet can be laminated under heating and foamed.
Although it is a foam sheet with good heat insulation, it is transparent (even if the thickness is 0.3 to 3 cm, if the average number of cells in the thickness direction exceeds 3, it is not transparent enough to be seen through. If it is less than 20 times, the transparency is good but the heat insulation is poor.
）。ポリプロピレン系樹脂無発泡シート層は、透明な断
熱性層であるポリプロピレン系樹脂発泡シート層の表面
を、該発泡シートの透明性を低下させることなしに保護
するとともに、積層体を熱成形可能なものにしている。). The non-foamed polypropylene resin sheet layer protects the surface of the polypropylene resin foam sheet layer, which is a transparent heat insulating layer, without reducing the transparency of the foam sheet, and also allows the laminate to be thermoformed. I have to.
本発明の積層体においてポリプロピレン系樹脂無発泡シ
ート層の厚さを０．２〜ＩＩＩＩＩＩｌにし且つポリプ
ロピレン系樹脂発泡シート層の厚さＤｆとポリプロピレ
ン系樹脂無発泡シート層２層の合計厚さＤｎを０．２
＜ Ｄｆ／Ｄｎ ＜ ５ であるようにすることは
、熱成形材料として適当な厚さ、すなわち約０．７〜５
＋ｍの範囲において上述の各層の作用を充分ならしめる
ために望ましい。In the laminate of the present invention, the thickness of the polypropylene resin non-foam sheet layer is set to 0.2 to IIIIIIl, and the thickness Df of the polypropylene resin foam sheet layer and the total thickness Dn of the two polypropylene resin non-foam sheet layers are 0.2
< Df/Dn < 5 means that the thickness is suitable for a thermoforming material, that is, about 0.7 to 5
A range of +m is desirable in order to make the effects of each of the above-mentioned layers sufficient.
本発明の積層体の透明性は、熱成形などの加工によって
失われるものではなく、むしろ、成形時に生じる延伸に
よって気泡が扁平化することにより、透明性は向上する
。The transparency of the laminate of the present invention is not lost by processing such as thermoforming, but rather, the transparency is improved by flattening the cells due to the stretching that occurs during molding.
発明の効果
本発明の積層体は従来の発泡体積層シートと違って透明
であり、しかも断熱性があって熱成形も可能なものであ
るから、内容物を透視可能で断熱性もある包装材料、容
器、容器の蓋、小型温室の屋根もしくは壁面構成材など
を製造することができるきわめてユニークな材料である
。本発明の積層体はまた、’Ｐ ｓ’ フ−ｈ！ ＩＩ
ｑｏｒ−ｒｗしｙＭ、Ｍｌｍｋｓｒ−ｆｐｚＬｍｍＬ
ＬｈｓＬ −ｈから作られた容器が電子レンジを用い
る調理に使用可能であるという利点もある。Effects of the Invention Unlike conventional foam laminated sheets, the laminate of the present invention is transparent, has heat insulating properties, and can be thermoformed, so it can be used as a packaging material that allows the contents to be seen through and has heat insulating properties. It is an extremely unique material that can be used to manufacture containers, container lids, and roof or wall components of small greenhouses. The laminate of the present invention also has 'Ps' hu-h! II
qor-rw yM, Mlmksr-fpzLmmL
There is also the advantage that containers made from LhsL-h can be used for cooking using a microwave oven.
ヌ１廻
密度０．９１ ｇ／ｃｎ＋３、メルトインデックス０．
６ｇ／１０分のポリプロピレンより、密度０ 、０２
ｇ７ｃｍコ、気泡径０．５〜０．７ｍｍの発泡シートを
常法により製造する。一方、同じポリプロピレンより、
無発泡の無延伸シートを製造しつつ押出しラミネートし
、冷却して接着する。Density per turn: 0.91 g/cn+3, melt index: 0.
From 6g/10min polypropylene, density 0,02
A foam sheet with a diameter of 7 cm and a cell diameter of 0.5 to 0.7 mm is produced by a conventional method. On the other hand, from the same polypropylene,
While producing a non-foamed, non-stretched sheet, it is extruded and laminated, cooled and bonded.
上記製法において、発泡シートの厚さを０．３〜２ｍｌ
ｌ１の範囲で、また無発泡シートの厚さを０．１〜２．
５ｍｍの範囲で、それぞれ変更して得られた積層体を、
浅野機械（株）製成形磯−ＦＣＰＯ５ＡＴＡ−Ｗにより
、投影面積１６３ｃｎ＋”、深さ７ｃ輸、容積６１０ｃ
ｃのトンブリ状容器に成形した。In the above manufacturing method, the thickness of the foam sheet is 0.3 to 2 ml.
l1, and the thickness of the non-foamed sheet is from 0.1 to 2.
The laminate obtained by changing each within a range of 5 mm,
Asano Kikai Co., Ltd.'s Molded Iso-FCPO5ATA-W has a projected area of 163cn+", a depth of 7c, and a volume of 610c.
It was molded into a tonburi-shaped container shown in c.
上記積層体および容器の特性値および性能を表１に示す
。Table 1 shows the characteristic values and performance of the above laminate and container.
なお性能試験の方法は次のとおりである。The performance test method is as follows.
透明性：新聞紙上に積層体を置き、通常の視力を有する
者が明視の距離から紙面を透視する。約１ｃｍ角の小見
出し用活字の読解性に基づき次の基準で透明性を判定す
る。Transparency: When the laminate is placed on newspaper, a person with normal vision can see through the paper from a distance of clear vision. Transparency is determined using the following criteria based on the readability of the approximately 1 cm square subheading type.
◎：明瞭に読み取れる
○：明瞭とはいノーないう弓番解可能
Δ：部分的に読取れない所がある
Ｘ：読解不可能
保温性：容器に９０°Ｃの熱湯４００ｃｃを入れ、直ち
に容器表面に手を触れたとき感しる熱さにより判定する
。◎: Can be read clearly ○: Can be clearly interpreted as yes/no Δ: Partially unreadable It is judged by the heat you feel when you touch it.
○：持っていられる Δ：なんとか持てる程度の熱さ ×：熱くて持てない 成形性：次の基準で判定する。○: You can take it with you. Δ: Heat that can be maintained somehow ×: Too hot to hold Formability: Judged based on the following criteria.
○ニ一般のポリプロピレン熱成形シートの成形条件で成
形可能。○Can be molded under the molding conditions of general polypropylene thermoforming sheets.
Δニ一般のポリプロピレン熱成形シートより成形可能温
度範囲は狭いが成形は可能。ΔD The moldable temperature range is narrower than general polypropylene thermoformable sheets, but molding is possible.
×：成形困難×: Difficult to mold
Claims (2)
〜３ｍｍであり且つ厚さ方向の平均気泡数が３以下であ
るポリプロピレン系樹脂発泡シートの両面に厚さ０．２
〜１ｍｍのポリプロピレン系樹脂無発泡シートが接着さ
れてなる積層体。(1) Density is 0.05g/cm^3 or less, thickness is 0.3
A polypropylene resin foam sheet with a thickness of 0.2 to 3 mm and an average number of cells in the thickness direction of 3 or less on both sides.
A laminate made of 1 mm non-foamed polypropylene resin sheets adhered together.
プロピレン系樹脂発泡シート層の厚さＤｆとポリプロピ
レン系樹脂無発泡シート層２層の合計厚さＤｎとの間に
０．２＜Ｄｆ／Ｄｎ＜５ の関係がある特許請求の範囲第１項記載の積層体。(2) The thickness of the entire laminate is 0.7 to 5 mm, and the difference between the thickness Df of the polypropylene resin foam sheet layer and the total thickness Dn of the two polypropylene resin non-foam sheet layers is 0.2 mm. The laminate according to claim 1, which has a relationship of <Df/Dn<5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61272864A JPH0829573B2 (en) | 1986-11-18 | 1986-11-18 | Thermoforming material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61272864A JPH0829573B2 (en) | 1986-11-18 | 1986-11-18 | Thermoforming material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63126739A true JPS63126739A (en) | 1988-05-30 |
| JPH0829573B2 JPH0829573B2 (en) | 1996-03-27 |
Family
ID=17519830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61272864A Expired - Fee Related JPH0829573B2 (en) | 1986-11-18 | 1986-11-18 | Thermoforming material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0829573B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4911978A (en) * | 1988-05-30 | 1990-03-27 | Sekisui Kaseihin Kogyo Kabushiki Kaisha | Polyolefin resin foamed laminate sheet and double-side vacuum forming of the same |
| US5075162A (en) * | 1988-03-01 | 1991-12-24 | Toray Industries, Inc. | Molded laminated article of cross-linked polyolifine foam |
| WO1998048962A3 (en) * | 1997-04-25 | 1999-01-28 | Brunswick Corp | Thermoplastic multi-layer composite structure |
| EP0962314A1 (en) * | 1998-05-27 | 1999-12-08 | Prosyn Polyane S.A. | Diffusing and isothermal plastic film for making coverings for greenhouses or sun shading systems |
| US6033770A (en) * | 1992-04-23 | 2000-03-07 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Polypropylene resin cellular molded article having a skin and production method therefor |
| US6306518B1 (en) | 1999-05-19 | 2001-10-23 | Montell Technology Company Bv | High surface gloss, co-extruded sheets from propylene polymer materials |
| JP2002059521A (en) * | 2000-06-08 | 2002-02-26 | Jsp Corp | Foamed polypropylene resin/polyolefin resin multi-layer body, container body, packaging container, and food packaging body |
| US6489019B1 (en) | 1999-05-19 | 2002-12-03 | Basell Poliolefine Italia S.P.A. | High surface gloss, co-extruded sheets from olefin polymer materials |
| EP1114709A4 (en) * | 1998-04-30 | 2004-06-23 | Daisen Industry Co Ltd | Device and method for synthetic resin internal die foam molding and internal die foam molded product obtained by these device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59107230U (en) * | 1983-01-10 | 1984-07-19 | 積水化成品工業株式会社 | Daylight insulation board |
| JPS6017314U (en) * | 1983-07-12 | 1985-02-05 | 積水化成品工業株式会社 | Coarse cell synthetic resin foam board |
-
1986
- 1986-11-18 JP JP61272864A patent/JPH0829573B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59107230U (en) * | 1983-01-10 | 1984-07-19 | 積水化成品工業株式会社 | Daylight insulation board |
| JPS6017314U (en) * | 1983-07-12 | 1985-02-05 | 積水化成品工業株式会社 | Coarse cell synthetic resin foam board |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5075162A (en) * | 1988-03-01 | 1991-12-24 | Toray Industries, Inc. | Molded laminated article of cross-linked polyolifine foam |
| US4911978A (en) * | 1988-05-30 | 1990-03-27 | Sekisui Kaseihin Kogyo Kabushiki Kaisha | Polyolefin resin foamed laminate sheet and double-side vacuum forming of the same |
| US6033770A (en) * | 1992-04-23 | 2000-03-07 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Polypropylene resin cellular molded article having a skin and production method therefor |
| WO1998048962A3 (en) * | 1997-04-25 | 1999-01-28 | Brunswick Corp | Thermoplastic multi-layer composite structure |
| EP1114709A4 (en) * | 1998-04-30 | 2004-06-23 | Daisen Industry Co Ltd | Device and method for synthetic resin internal die foam molding and internal die foam molded product obtained by these device and method |
| EP0962314A1 (en) * | 1998-05-27 | 1999-12-08 | Prosyn Polyane S.A. | Diffusing and isothermal plastic film for making coverings for greenhouses or sun shading systems |
| US6306518B1 (en) | 1999-05-19 | 2001-10-23 | Montell Technology Company Bv | High surface gloss, co-extruded sheets from propylene polymer materials |
| US6489019B1 (en) | 1999-05-19 | 2002-12-03 | Basell Poliolefine Italia S.P.A. | High surface gloss, co-extruded sheets from olefin polymer materials |
| JP2002059521A (en) * | 2000-06-08 | 2002-02-26 | Jsp Corp | Foamed polypropylene resin/polyolefin resin multi-layer body, container body, packaging container, and food packaging body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0829573B2 (en) | 1996-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |