JPS61172722A - Heat forming of thermoplastic sheet - Google Patents
Heat forming of thermoplastic sheetInfo
- Publication number
- JPS61172722A JPS61172722A JP1321085A JP1321085A JPS61172722A JP S61172722 A JPS61172722 A JP S61172722A JP 1321085 A JP1321085 A JP 1321085A JP 1321085 A JP1321085 A JP 1321085A JP S61172722 A JPS61172722 A JP S61172722A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- heating
- heated
- roll
- 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.)
- Pending
Links
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は繰り出される熱可塑性シートに成形すべきポケ
ット部分のみ加熱してポケット状に成形するようになし
た加熱成形方法に関するものであるＯ
（従来の技術とその問題点〕
熱可塑性合成樹脂シート又はフィルムに包装すべき物品
を収納するポケットを成形して物品の包装を行なうブリ
スター包装機に於ては繰り出される前記シートの全面を
ポケット成形に必要な温度に加熱して成形するようにな
している０このためポケット成形は行なえてもシートが
冷却する時、シート全体が収縮する。この場合ポケット
成形した部分では肉厚が薄くなっており、又ポケット未
成形部分ではシート厚となり、ポケット形成部より厚く
なってシートの厚さが部所によって異なる。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a thermoforming method in which only the pocket portions to be formed into a dispensed thermoplastic sheet are heated to form the pocket shape. [Prior art and its problems] In a blister packaging machine that wraps an article by forming a pocket for storing the article into a thermoplastic synthetic resin sheet or film, the entire surface of the sheet that is fed out is used to form a pocket. The sheet is heated to the required temperature and molded. Therefore, even if pocket molding can be performed, when the sheet cools down, the entire sheet will shrink.In this case, the wall thickness will be thinner in the pocket molded area. In addition, the sheet thickness is thicker in the pocket-unformed portion than in the pocket-formed portion, and the thickness of the sheet differs depending on the portion.
このためシートが冷却する時、カールが発生し、ブリス
ター包装の外観を損なったり、このブリスター包装を何
枚も重ねる場合嵩高くなる等の欠点がある。このカール
発生２防ぐためにはポケット成形後自然冷却をするので
はなく、シール加熱後、不要部分即ちポケット成形部以
外を直ちに冷却する必要がある。この冷却装置を要し為
かつ機械が複雑なものとなると共に余分の加熱によるエ
ネルギーのロスも大なるものである。For this reason, when the sheet is cooled, curling occurs, which impairs the appearance of the blister packaging, and when multiple sheets of blister packaging are stacked, the blister packaging becomes bulky. In order to prevent this occurrence of curling 2, it is necessary to immediately cool unnecessary parts, that is, other than the pocket forming part, after sealing heating, rather than allowing natural cooling after pocket forming. This requires a cooling device, which makes the machine complicated and causes a large loss of energy due to extra heating.
本発明では連続もしくは間歇的に繰り出される熱可塑性
合成樹脂シートをポケット成形に必要な箇所のみ所要加
工成形温度に加熱し、これにより均一加熱を可能として
熱エネルギーの有効利用と製品のカールを防止して寸法
精度の向上を図らんとする。In the present invention, a thermoplastic synthetic resin sheet that is continuously or intermittently fed out is heated to the required processing temperature only in the areas necessary for pocket molding, thereby enabling uniform heating, effective use of thermal energy, and prevention of curling of the product. The aim is to improve dimensional accuracy.
〔実施例〕 以下本発明を図面に示す実施例にもとづいて説明する。〔Example〕 The present invention will be described below based on embodiments shown in the drawings.
所要幅と厚さを有する長尺の熱可塑性合成樹脂シートを
巻数したロールＲより該シートＳを第１図に示す如く加
熱及びポケット成形をロールＨＲＦＲにて行なう場合、
連続して繰り出され、第２図に示す如く加熱及びポケッ
ト成形を平盤にて行なう場合は平盤ＨＰ、ＦＰの長さ等
によって一定ピッチ毎間隔的に繰り出すようにする。勿
論連続あるいは間隔的に繰り出されるシートが加熱ロー
ル又は加熱盤に接する時、ポケット成形に適した温度に
加熱される。そしてこの場合繰り出されるシートの全面
が加熱されるのではなくポケット成形部のみ加熱される
ように加熱ロールＨＲ又は加熱盤ＨＰが加工されている
。この加熱はシート全体に於ては第３図に示す如く、そ
して部分の拡大に於ては第４図に示す如くポケット成形
部Ｓａのみ加熱されるようする。この加熱方法としては
第５１Ｎ（ａ）に示すように加熱ロール又は盤内にヒー
タを内蔵し、その外周面又は表面をポケット成形部位置
のみシート面と接するよう突出させ、それ以外に於ては
外周面又は表面をくぼませるか又はポケット成形部の外
周を断熱材例えばシリコンゴム等を設置し、この断熱材
がシート面に接触してもシートを加熱しないようになす
。さらにこの加熱ロール又は盤の外周又は表面にテフロ
ン等にて表面コートを施すこともある。このヒータ内蔵
式加熱ロールＨＲを使用する場合該ロールと対向して加
圧ロールＰＲを配設し、繰り出されるシートが加熱ロー
ルに所要圧で接触し所望の加熱が行なわれるようにする
。また加熱盤ＨＰの場合はこれと対向して加圧盤を用い
ることもある。When the sheet S is heated and pocket-formed using the roll HRFR as shown in FIG.
When heating and pocket forming are performed on a flat plate as shown in FIG. 2, the sheets are continuously fed out and fed out at regular intervals depending on the lengths of the flat plates HP and FP. Of course, when the sheet that is continuously or periodically fed out comes into contact with a heated roll or heating plate, it is heated to a temperature suitable for pocket forming. In this case, the heating roll HR or the heating plate HP is processed so that the entire surface of the sheet to be fed out is not heated, but only the pocket forming portion is heated. This heating is performed so that the entire sheet is heated as shown in FIG. 3, and when a portion is enlarged, only the pocket forming portion Sa is heated as shown in FIG. As for this heating method, as shown in Article 51N(a), a heater is built into a heating roll or a board, and its outer peripheral surface or surface is projected so as to come into contact with the sheet surface only at the pocket forming part. The outer periphery or surface is recessed or a heat insulating material such as silicone rubber is placed around the outer periphery of the pocket forming part so that the sheet will not be heated even if this heat insulating material comes into contact with the sheet surface. Furthermore, the outer periphery or surface of this heating roll or disk may be surface coated with Teflon or the like. When this heating roll HR with a built-in heater is used, a pressure roll PR is disposed opposite the roll so that the sheet being fed out comes into contact with the heating roll with a required pressure to perform desired heating. Further, in the case of a heating plate HP, a pressure plate may be used in opposition to the heating plate HP.
また赤外線による加熱方式に於ては第５図伽）に示すよ
うに繰り出されるシートの片面に接触もしくは近接して
熱伝導性金属より製した冷却ロールＯＲ又は冷却板ａｐ
に加熱部分のみをくぼませポケット成形部以外のシート
面には接するようにすると共に必要に応じてその表面に
表面コートを施し１またこの冷却ロール又は盤と、シー
トを挾んで対向するように赤外線加熱装置工Ｈを配設し
１この赤外線の照射にて所望の加熱を行なわしめる。In addition, in the case of the heating method using infrared rays, as shown in Fig. 5, a cooling roll OR or a cooling plate ap made of a thermally conductive metal is placed in contact with or in close proximity to one side of the sheet being fed out.
Only the heating part is recessed so that it is in contact with the sheet surface other than the pocket forming part, and if necessary, a surface coating is applied to that surface. A heating device H is installed and the desired heating is performed by irradiation with infrared rays.
さらに高周波にて加熱する場合はシートの加熱位置に電
極を埋設し他部を電気絶縁材にて形成したロールを二つ
対向せしめるか加熱板を対向せしめて成るものでこの高
周波加熱ロール又は盤間にシートを挿通せしめて所望の
加熱を行なわしめるものである。Furthermore, when heating with high frequency, electrodes are embedded in the heating position of the sheet, and the other part is made of electrically insulating material, and the other part is made of an electrically insulating material. The desired heating is performed by inserting a sheet through the
以上シートを加熱する場合ポケット成形部のみ行なうよ
うにする旨説明したが、このポケット成形時第４図の（
載畑）に示す二つの加熱法がある。It has been explained above that when heating the sheet, only the pocket forming section is heated.
There are two heating methods shown in (Urihata).
第４図（４）はポケット形成部の大きさに応じた円形又
は長円形、角形部分３ａを加熱するもので、この時この
所要面積の加熱部分シートが略平均して伸長してボケツ
）ＳＰが形成される。第４図（Ｂ）はボケツ）ＳＰの外
周壁部となる部分のみリング状Ｓａに加熱する方法で、
この場合はポケット外周壁のシートのみ伸長し１ポケッ
ト底面部のシートは伸長しないものとなる。このリング
状又は長円形、だ円形、角形のループ状の加熱方法では
それに適したように加熱ロール又は盤の外周面又は表面
は加工されるものである。In FIG. 4 (4), a circular, oval, or square portion 3a is heated depending on the size of the pocket forming portion, and at this time, the heated portion sheet of the required area expands approximately on average and becomes uneven) SP is formed. Fig. 4 (B) is a blank) A method in which only the portion that becomes the outer peripheral wall of SP is heated into a ring-shaped Sa.
In this case, only the sheet on the outer circumferential wall of the pocket is expanded, and the sheet on the bottom of one pocket is not expanded. In this ring-shaped, oval, oval, or rectangular loop heating method, the outer peripheral surface or surface of the heating roll or disk is processed to suit the heating method.
上述の如くポケット形成部のみ加熱されたシートＳは加
熱ロール位置に達した時１成形ロールの各ポケットとこ
の加熱部とが一致するようにして真空法その他の方法で
ポケットの成形を行なう。When the sheet S heated only at the pocket forming portion as described above reaches the heating roll position, the pockets are formed by a vacuum method or other method so that each pocket of one forming roll and this heating portion coincide.
又レーザを用いて加熱することも可能である。It is also possible to heat using a laser.
而して本発明による時はブリスター包装に用いる熱可塑
性合成樹脂シートをポケット成形部のみ加熱するため、
ポケット成形後シート冷却時に於てシート全体が収縮す
ることがなく、またシートにカールが発生することを防
ぐことができると共にポケット成形の必要部分のみシー
トが伸長されるのでポケットの凹型部の厚みを希望寸法
にすることができる。さらに加熱ロール又は盤によるシ
ートの部分加熱のため熱量が少なくてすみ省エネルギー
に役立ちかつ均一加熱が可能となり、寸法精度の向上を
図り、不良発生を減少せしめられる。According to the present invention, since only the pocket forming part of the thermoplastic synthetic resin sheet used for blister packaging is heated,
When the sheet is cooled after pocket forming, the entire sheet does not shrink, and it is possible to prevent the sheet from curling, and since the sheet is stretched only in the areas necessary for pocket forming, the thickness of the concave part of the pocket can be reduced. Can be made to any desired size. Furthermore, since the sheet is partially heated by heating rolls or discs, the amount of heat is small, which helps in energy saving and enables uniform heating, which improves dimensional accuracy and reduces the occurrence of defects.
さらに従来のように冷却設備が不要となり、処理能力を
向上できる等の数々の利点を有する。Furthermore, it has many advantages, such as eliminating the need for conventional cooling equipment and improving processing capacity.
第１図は連続繰出加熱成形法を示す概略図、第２図は間
歇繰出による加熱成形法を示す概略図、第３図は部分加
熱を示すシートの平面図、第４図はその拡大図と断面図
、第５図は加熱装置の説明図である。
Ｒはロール、Ｓはシート、ＨＲは加熱ロール、７Ｒは成
形ロール、ＨＰは加熱盤、ｓ＆はポケット成形部、ＰＲ
は加圧ロール、ＣＲは冷却ロール。
特許出願人 株式会社 ミエーチュアル第１図
（Ｑ） 第４図 （ｂ）○○
◎◎
第５図Fig. 1 is a schematic diagram showing the continuous feeding heat forming method, Fig. 2 is a schematic diagram showing the heat forming method by intermittent feeding, Fig. 3 is a plan view of the sheet showing partial heating, and Fig. 4 is an enlarged view thereof. The cross-sectional view, FIG. 5, is an explanatory diagram of the heating device. R is roll, S is sheet, HR is heating roll, 7R is forming roll, HP is heating plate, s& is pocket forming part, PR
is a pressure roll, and CR is a cooling roll. Patent applicant Mietual Co., Ltd. Figure 1 (Q) Figure 4 (b) ○○
◎◎ Figure 5
Claims (5)
るブリスター成形機に於て、 前記シートの成形すべきポケットの形状に応じた部分の
み加熱し、該加熱部シートを伸長させてポケットを形成
するようになしたことを特徴とする熱可塑性シートの加
熱成形方法。(1) In a blister molding machine that forms concave pockets after heating a thermoplastic sheet, only the portion of the sheet corresponding to the shape of the pocket to be molded is heated, and the heated sheet is stretched to form the pocket. A method for thermoforming a thermoplastic sheet, characterized by:
にて熱伝導加熱により行なう特許請求の範囲第１項記載
の加熱成形方法。(2) The thermoforming method according to claim 1, wherein heating of the pocket forming portion of the sheet is performed by heat conduction heating using a built-in heater.
うようにした特許請求の範囲第１項記載の熱可塑性シー
トの加熱成形方法。(3) A method for thermoforming a thermoplastic sheet according to claim 1, wherein the pocket forming portion of the sheet is heated with high frequency.
行なうようにして特許請求の範囲第１項記載の熱可塑性
シートの加熱成形方法。(4) A method for thermoforming a thermoplastic sheet according to claim 1, wherein the pocket forming portion of the sheet is heated by infrared irradiation.
る部分のみリング状もしくは長円形、角形などのループ
状に加熱するようになした特許請求の範囲第１項記載の
熱可塑性シートの加熱成形方法。(5) Heat molding of the thermoplastic sheet according to claim 1, wherein only the portion that becomes the pocket outer peripheral wall in the pocket forming portion of the sheet is heated in a ring shape, an oval shape, a square shape, or other loop shape. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1321085A JPS61172722A (en) | 1985-01-25 | 1985-01-25 | Heat forming of thermoplastic sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1321085A JPS61172722A (en) | 1985-01-25 | 1985-01-25 | Heat forming of thermoplastic sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61172722A true JPS61172722A (en) | 1986-08-04 |
Family
ID=11826788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1321085A Pending JPS61172722A (en) | 1985-01-25 | 1985-01-25 | Heat forming of thermoplastic sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61172722A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048543A1 (en) * | 1996-06-17 | 1997-12-24 | Gillette Canada Inc. | Method of forming blister pack packaging |
| WO1998042575A1 (en) * | 1997-03-26 | 1998-10-01 | Matsushita Electric Industrial Co., Ltd. | Thermoforming method for belt-shaped films |
| JP2003519052A (en) * | 1999-12-30 | 2003-06-17 | アイ． エム． エー． インダストリア マッキーネ オートマティケ ソシエタ ペル アチオニ | Method and apparatus for forming blisters in a strip to produce blister packs on a blister forming machine |
| JP2009117731A (en) * | 2007-11-09 | 2009-05-28 | Bridgestone Corp | Method for manufacturing solar cell |
| JP4599709B2 (en) * | 2000-12-20 | 2010-12-15 | 住友ベークライト株式会社 | Press-through pack packaging device and press-through pack packaging body |
| JP2016078927A (en) * | 2014-10-22 | 2016-05-16 | 大森機械工業株式会社 | Ptp sheet manufacturing device and method for manufacturing ptp sheet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639258A (en) * | 1979-09-10 | 1981-04-14 | Kashii Tetsukou Kk | Method of building handrail |
| JPS604024A (en) * | 1983-06-22 | 1985-01-10 | Nippon Zanpatsuku Kk | Thermoforming process of thermoplastic synthetic resin sheet |
| JPS604026A (en) * | 1983-06-22 | 1985-01-10 | Nippon Zanpatsuku Kk | Thermoforming process of thermoplastic synthetic resin sheet |
| JPS6011332A (en) * | 1983-06-22 | 1985-01-21 | Nippon Zanpatsuku Kk | Method of heating and forming thermoplastic synthetic resin |
-
1985
- 1985-01-25 JP JP1321085A patent/JPS61172722A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639258A (en) * | 1979-09-10 | 1981-04-14 | Kashii Tetsukou Kk | Method of building handrail |
| JPS604024A (en) * | 1983-06-22 | 1985-01-10 | Nippon Zanpatsuku Kk | Thermoforming process of thermoplastic synthetic resin sheet |
| JPS604026A (en) * | 1983-06-22 | 1985-01-10 | Nippon Zanpatsuku Kk | Thermoforming process of thermoplastic synthetic resin sheet |
| JPS6011332A (en) * | 1983-06-22 | 1985-01-21 | Nippon Zanpatsuku Kk | Method of heating and forming thermoplastic synthetic resin |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048543A1 (en) * | 1996-06-17 | 1997-12-24 | Gillette Canada Inc. | Method of forming blister pack packaging |
| US5840243A (en) * | 1996-06-17 | 1998-11-24 | Gillette Canada Inc. | Method of forming blister pack packaging |
| US6234781B1 (en) | 1996-06-17 | 2001-05-22 | Gillette Canada Inc. | Apparatus for making blister pack packaging |
| WO1998042575A1 (en) * | 1997-03-26 | 1998-10-01 | Matsushita Electric Industrial Co., Ltd. | Thermoforming method for belt-shaped films |
| JP2003519052A (en) * | 1999-12-30 | 2003-06-17 | アイ． エム． エー． インダストリア マッキーネ オートマティケ ソシエタ ペル アチオニ | Method and apparatus for forming blisters in a strip to produce blister packs on a blister forming machine |
| JP4599709B2 (en) * | 2000-12-20 | 2010-12-15 | 住友ベークライト株式会社 | Press-through pack packaging device and press-through pack packaging body |
| JP2009117731A (en) * | 2007-11-09 | 2009-05-28 | Bridgestone Corp | Method for manufacturing solar cell |
| JP2016078927A (en) * | 2014-10-22 | 2016-05-16 | 大森機械工業株式会社 | Ptp sheet manufacturing device and method for manufacturing ptp sheet |
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