JPS609725A - Manufacture of single-layer two-color synthetic resin film and device therefor - Google Patents

Manufacture of single-layer two-color synthetic resin film and device therefor

Info

Publication number
JPS609725A
JPS609725A JP58116009A JP11600983A JPS609725A JP S609725 A JPS609725 A JP S609725A JP 58116009 A JP58116009 A JP 58116009A JP 11600983 A JP11600983 A JP 11600983A JP S609725 A JPS609725 A JP S609725A
Authority
JP
Japan
Prior art keywords
resin
annular slit
film
intersections
points
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
Application number
JP58116009A
Other languages
Japanese (ja)
Inventor
Shigekatsu Nakajima
中島　重勝
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.)
Seisan Nipponsha KK
Original Assignee
Seisan Nipponsha KK
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 Seisan Nipponsha KK filed Critical Seisan Nipponsha KK
Priority to JP58116009A priority Critical patent/JPS609725A/en
Publication of JPS609725A publication Critical patent/JPS609725A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a single-layer cylindrical film having a different color part whose width is arbitrary within a cylindrical surface of the same thickness, by providing a mandrel making resin of different colors divided and held join within an annular slit. CONSTITUTION:White resin is introduced between points (a)-(b) of intersections of a dividing zone 9a of a mandrel from a first introduction opening 6 of resin through a first resin duct 8. Red resin, moreover, is introduced between points (a)-(b), (b)-(b) of intersections of the dividing zone of the mandrel from a second introduction opening 7 of resin through a branch duct 10 and a second resin duct 11, and they are divided respectively until they are entered into an annular slit 2. When they are entered into the annular slit 2 by passing through the points (a), (b) of intersections, the white and red resin adjoining to each other are joined, which are turned into a ring within the annular slit 2 and single-layer cylindrical film 12 is extruded from the annular slit 2 for molding. The extrusion-molded single-layer cylindrical film 12 is molded by turning a part of the same passed through between points (a)-1, (b)-2 of intersections into a red film 12a and a part of the same passed through between the points (a)-(b) of intersections into white film 12b.

Description

【発明の詳細な説明】 本発明は筒状の単層二色合成樹脂フィルムの製造方法及
び装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for producing a cylindrical single-layer two-color synthetic resin film.

合成樹脂の袋体の素材となる筒状フィルムにおいて、内
外二層とした複層フィルムでは内外層を異なる色の樹脂
で形成したものは公知であるが単層で、その円周上の一
部を同一肉厚で異なる色の樹脂にて一体に成形したもの
は従来存在しない。In the cylindrical film that is the material of the synthetic resin bag, it is known that there are two-layer multilayer films with the inner and outer layers made of different colored resins, but it is a single layer, and a part of the circumference is There has never been a product that is integrally molded from resins of different colors with the same wall thickness.

異色のフィルムにて袋体′ｆｔ製造する場合は、フラッ
トな異色フィルムを重ね合せて製袋機によって製造して
いるが、この場合袋体の片面全体が一種類の色となり、
同一面で異色となることはないっ 本発明は単層筒状フィルムにおいて同一面内で任意の幅
の異色部分を成形可能としたものである。When manufacturing bags using films of different colors, flat films of different colors are stacked together and manufactured using a bag making machine, but in this case, one side of the bag is entirely of one color,
Different colors do not occur on the same surface.The present invention makes it possible to form different color portions of arbitrary widths on the same surface in a single-layer cylindrical film.

以下本発明の実施例を図面によって説明する。Embodiments of the present invention will be described below with reference to the drawings.

第１図乃至第４図において、１はダイスであり、単層の
筒状フィルムを押出し成形する環状スリット２と、この
環状スリット２より押出された筒状フィルムを膨張させ
るためのエア吹出穴５を有している。In FIGS. 1 to 4, 1 is a die, which includes an annular slit 2 for extruding a single-layer cylindrical film, and an air blowing hole 5 for expanding the cylindrical film extruded from the annular slit 2. have.

さらに、ダイス１には第１の押出機３と接続する第１の
樹脂導入口６と、第１の押出機３の樹脂とは異色の樹脂
を押出す第２の押出機４と接続する第２の樹脂導入ロア
とを有し、第１の樹脂導入口６からはマンドレル９に通
じる第１の樹脂通路８が設けられ、また第２の樹脂導入
ロアからは分岐通路１０を径てマンドレル９に通じる第
２の樹脂通路１１が設けられている。Furthermore, the die 1 has a first resin inlet 6 connected to the first extruder 3, and a second extruder 4 connected to the second extruder 4 which extrudes a resin different in color from the resin of the first extruder 3. A first resin passage 8 is provided from the first resin introduction port 6 leading to the mandrel 9, and from the second resin introduction lower through a branch passage 10, the mandrel 9 is connected to the mandrel 9. A second resin passage 11 is provided which leads to.

前記マンドレル９は第５図及び第２図乃至第第４図でも
示すように、第１の樹脂通路８並びに第２の樹脂通路１
１からマンドレル９内に導入された異色樹脂をそれぞれ
環状スリット２に至るまで区分する区分帯９ａと、環状
スリット２内で合流させる区分帯９αの頂点のエツジ状
の交点α、拳を円周の複数個所に形成した構造である。The mandrel 9 is connected to the first resin passage 8 and the second resin passage 1, as shown in FIG. 5 and FIGS. 2 to 4.
The edge-shaped intersection α of the apex of the dividing band 9a that separates the different colored resin introduced into the mandrel 9 from 1 to the annular slit 2 and the dividing band 9α that merges within the annular slit 2, This is a structure formed in multiple locations.

本発明は上記の通りであるから、例えば第１の押出機３
の樹脂を白色とし、第２の押出機４の樹脂を赤色とした
場合で説明すると、白色樹脂は第１の樹脂導入口６から
第１の樹脂通路８を径てマンドレル９０区分帯９αの交
点α−桑間に導入され、また赤色樹脂は第２の樹脂導入
ロアから分岐通路１０及び第２の樹脂通路１１を径てマ
ンドレル９の区分帯の交点α−α、Ｊ−−Ｊ−間に導入
され、環状スリット２に入るまでそれぞれ区分する。そ
して、この交点α、拳を通過して環状スリット２に入る
と前記交点α−ｋ、α−α、Ｌ−にの区分間隔を保って
相接する白、赤樹脂は合流し、環状スリット２内で一つ
の輪となって環状スリット２より第６図に示すように単
層の筒状フィルム１２が押出し成形されるのである。Since the present invention is as described above, for example, the first extruder 3
To explain the case where the resin in the second extruder 4 is white and the resin in the second extruder 4 is red, the white resin passes from the first resin inlet 6 through the first resin passage 8 to the intersection of the mandrel 90 and the dividing band 9α. The red resin is introduced from the second resin introduction lower through the branch passage 10 and the second resin passage 11 between the intersections α-α and J--J- of the dividing bands of the mandrel 9. and separate them until they enter the annular slit 2. Then, when passing through this intersection α and the fist and entering the annular slit 2, the white and red resins that are in contact with each other while maintaining the separation intervals at the intersections α-k, α-α, and L- merge, and the annular slit 2 As shown in FIG. 6, a single-layer cylindrical film 12 is extruded through the annular slit 2 in a single ring.

この押出し成形された単層の筒状フィルム１２は、前記
交点α−α、ｋ−を間を通過した部分は赤色フィルム１
２αとなり、交点α−に間を通過した部分は白色フィル
ム１２ｂとなって成形される。This extrusion-molded single-layer cylindrical film 12 has a red film 1 in the portion passing through the intersections α-α and k-.
2α, and the portion passing through the intersection α- becomes a white film 12b and is molded.

従って、異色幅は交点α、Ｊの間隔を変更することによ
って任意に得られる。Therefore, the different color width can be arbitrarily obtained by changing the interval between the intersection points α and J.

このように本発明によると、同一肉厚の円筒面内に任意
の幅の異色部分を有する単層の円筒フィルムが、従来と
同様なインフレーション方式によって容易に製造するこ
とができ、異色フィルムによる袋体の製造も容易となり
、色調的に美麗な単層フィルムによる袋体が提供できる
利点がある。As described above, according to the present invention, a single-layer cylindrical film having a different-colored portion of an arbitrary width within a cylindrical surface of the same wall thickness can be easily manufactured by the same inflation method as in the past, and a bag made of a different-colored film can be produced easily. The bag body can be manufactured easily, and there is an advantage that a bag body made of a single layer film with beautiful color tone can be provided.

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

図面は本発明の実施例を示し、第１図は製造装置の平面
図、第２図はダイスの平面図、第３図はダイスの断面図
、第４図は樹脂通路を示すダイスの平面図、第５図はマ
ンドレルの区分帯を示す側面図、第６図は成形状態の側
面図である。 １・・・ダイス、２・・・環状スリット、３・・・第１
の押出機、４・・・第２の押出様、８・・・第１の樹脂
通路、１１・・・第２の樹脂通路、９・・・マンドレル
、９α・・・区分帯、α、黍・・・交点。 ヘ 味 第４図　、１ 「− ■□□□The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of the manufacturing apparatus, FIG. 2 is a plan view of the die, FIG. 3 is a sectional view of the die, and FIG. 4 is a plan view of the die showing resin passages. , FIG. 5 is a side view showing the dividing band of the mandrel, and FIG. 6 is a side view of the molded state. 1... Dice, 2... Annular slit, 3... First
extruder, 4... second extrusion mode, 8... first resin passage, 11... second resin passage, 9... mandrel, 9α... dividing band, α, millet ...intersection. Hemi Figure 4, 1 “- ■□□□

Claims (2)

【特許請求の範囲】[Claims] （１）二種類の異色樹脂を異なる樹脂通路によってダイ
ス内の環状スリット直前まで区分して導き、しかる後に
前記異色樹脂を合流させて環状スリットより筒状フィル
ムな押出成形することを特徴とする単層二色合成樹脂フ
ィルムの製造方法。(1) A unit characterized in that two types of different colored resins are separated and guided through different resin passages up to just before the annular slit in the die, and then the different colored resins are merged and extruded into a cylindrical film from the annular slit. A method for producing a layered two-color synthetic resin film. （２）筒状フィルムを押出成形する環状スリットを有す
るダイスにおいて、互いに色を異にする樹脂を押出す第
１の押出機からの樹脂を導入する樹脂通路と第２の押出
機からの樹脂を導入する樹脂通路とを有し、このそれぞ
れの樹脂通路に導入された異色樹脂を前記環状スリット
に至るまで区分し、かつ環状スリット内で合流させるマ
ンドレルを備えたことを特徴とする単層二色合成樹脂フ
ィルムの製造装置。(2) In a die with an annular slit for extrusion molding a cylindrical film, a resin passageway introduces resin from a first extruder that extrudes resins of different colors, and a resin passageway introduces resin from a second extruder. A single-layer two-color resin introducing resin passage, characterized in that it has a mandrel that separates different colored resins introduced into each resin passage up to the annular slit and merges them within the annular slit. Synthetic resin film manufacturing equipment.
JP58116009A 1983-06-29 1983-06-29 Manufacture of single-layer two-color synthetic resin film and device therefor Pending JPS609725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58116009A JPS609725A (en) 1983-06-29 1983-06-29 Manufacture of single-layer two-color synthetic resin film and device therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58116009A JPS609725A (en) 1983-06-29 1983-06-29 Manufacture of single-layer two-color synthetic resin film and device therefor

Publications (1)

Publication Number Publication Date
JPS609725A true JPS609725A (en) 1985-01-18

Family

ID=14676566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58116009A Pending JPS609725A (en) 1983-06-29 1983-06-29 Manufacture of single-layer two-color synthetic resin film and device therefor

Country Status (1)

Country Link
JP (1) JPS609725A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007036137A1 (en) * 2005-09-29 2007-04-05 Xiaolu Li Die for film-blowing machine and the machine including such die

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007036137A1 (en) * 2005-09-29 2007-04-05 Xiaolu Li Die for film-blowing machine and the machine including such die
KR101018157B1 (en) 2005-09-29 2011-02-28 시아오루 리 Die for film-blowing machine and the machine including such die

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