JP2661423B2 - Heat fusion method - Google Patents
Heat fusion methodInfo
- Publication number
- JP2661423B2 JP2661423B2 JP3209337A JP20933791A JP2661423B2 JP 2661423 B2 JP2661423 B2 JP 2661423B2 JP 3209337 A JP3209337 A JP 3209337A JP 20933791 A JP20933791 A JP 20933791A JP 2661423 B2 JP2661423 B2 JP 2661423B2
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- polyolefin
- heat
- acid
- hot air
- 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 - Fee Related
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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
- B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/028—Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle radiation
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4326—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms for making hollow articles or hollow-preforms, e.g. half-shells
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
- B29C66/712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined the composition of one of the parts to be joined being different from the composition of the other part
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
- B29C66/72328—Paper
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Cartons (AREA)
- Making Paper Articles (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は容器用構成材料の熱融着
方法に関し、更に詳しくは、ポリオレフィン部分とポリ
エステル部分からなる表面と、ポリエステル表面とを同
時に熱融着する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for heat-sealing a container material, and more particularly, to a method for simultaneously heat-sealing a surface composed of a polyolefin portion and a polyester portion and a polyester surface.
【0002】[0002]
【従来の技術】乳飲料、果実飲料、酒等の液体飲料用容
器としては、その衛生性、耐水性、防湿性及び熱封緘が
可能である事等から、従来、紙を基材とし、内面をポリ
オレフィン類等で加工した容器構成材料が用いられてい
る。2. Description of the Related Art Containers for liquid drinks such as milk drinks, fruit drinks, and sake are conventionally made of paper as a base material because of their hygiene, water resistance, moisture proofness, and heat sealability. Of the container is processed by using a polyolefin or the like.
【0003】このような容器構成材料のうち、例えば図
2に示されるような胴部を有する容器においては、特に
内容物が酒等の場合、その接合部は構成材料端面が容器
内部に露出して内容物に接触することのないように構成
されている。すなわち、図2(A)で示す部分は、図3
に拡大断面図として示すように、一方の材料端部を接着
に必要な所定長さで内側に折り曲げ、該折り曲げ部分の
外面とこれに対応する他方の材料端部の内面とを接着さ
せる際、予め、前記折り曲げ部分に相当する部分の先端
から厚み方向の中心付近、すなわち、紙の部分の外側部
分を先端から一定長さで除去し、残った内側の半分の厚
み部分を外側の除去部分へ折りこんでおく方法が通常用
いられている。従って、Xで示される部分においては構
成材料の内面同志が接着され、Yで示される部分におい
ては構成材料の外面と内面が接着されることになる。[0003] Among such container constituent materials, for example, in the case of a container having a body as shown in Fig. 2, especially when the contents are sake or the like, the joint is formed such that the end face of the constituent material is exposed inside the container. It does not come into contact with the contents. That is, the portion shown in FIG.
As shown as an enlarged cross-sectional view, when one material end is bent inward at a predetermined length necessary for bonding, and when bonding the outer surface of the bent portion and the corresponding inner surface of the other material end, In advance, the vicinity of the center in the thickness direction from the tip of the portion corresponding to the bent portion, that is, the outer portion of the paper portion is removed at a fixed length from the tip, and the remaining inner half thickness portion is removed to the outer removed portion. The method of folding is usually used. Therefore, at the portion indicated by X, the inner surfaces of the constituent materials are bonded together, and at the portion indicated by Y, the outer surface and the inner surface of the constituent material are bonded.
【0004】従来、前記の如き容器構成材料としては、
内面、外面のいずれもポリオレフィンが用いられてい
た。しかしながら容器内面にポリオレフィンを用いた場
合、ポリオレフィンが飲料の香味成分を吸着又は透過す
るという性質を有しているため、飲料本来の香り、味等
が維持されないという問題があり、更に上記材料をポリ
オレフィンの押出コーティングにより作成する場合、酸
化がおこりやすく、このため異臭が発生するという問題
も生じていた。[0004] Conventionally, as a container constituting material as described above,
Polyolefin was used for both the inner surface and the outer surface. However, when a polyolefin is used for the inner surface of the container, the polyolefin has a property of adsorbing or permeating a flavor component of the beverage, and thus there is a problem that the original aroma and taste of the beverage are not maintained. When it is prepared by extrusion coating, there is also a problem that oxidation is apt to occur, which causes an unpleasant odor.
【0005】上記問題点を解決するために、近年容器内
面層としてポリオレフィンのかわりにポリエステル、特
にヒートシール性に優れたポリエステルを用いたものが
容器構成材料として用いられている。In order to solve the above-mentioned problems, in recent years, instead of polyolefin, polyester, particularly polyester having excellent heat sealing properties, has been used as a container constituting material instead of polyolefin as an inner surface layer of the container.
【0006】[0006]
【発明が解決しようとする課題】上記の如くヒートシー
ル性ポリエステルを用いた場合においても、紙を主体と
した構成材料の場合、端部の接着部分を形成するためヒ
ートシールを行なおうとしても、紙が断熱材として作用
するため、現実には熱融着は困難であった。このため、
熱融着させるべき両方の面をガスバーナー等であぶり、
加熱溶融した後、重ねあわせ融着する、いわゆるフレー
ム処理が行われるが、前記の如く、一方の表面が二種以
上の材質、即ち、ポリエステル部分とポリオレフィン部
分を有する場合、フレーム処理により、ポリエステル表
面に低級酸化物が生成し、該酸化物がポリエステル同志
の接着を阻害するため、図3におけるXの部分の接着が
不十分であった。In the case where the heat-sealable polyester is used as described above, in the case of a material mainly composed of paper, even if heat sealing is performed to form an adhesive portion at the end. However, since the paper acts as a heat insulating material, it is actually difficult to perform heat fusion. For this reason,
Both surfaces to be heat-sealed are burned with a gas burner or the like,
After being heated and melted, a so-called flame treatment of superimposing and fusing is performed. As described above, when one surface has two or more kinds of materials, that is, a polyester portion and a polyolefin portion, the polyester surface is treated by the flame treatment. In this case, a lower oxide was formed, and the oxide hindered the adhesion between the polyesters. Therefore, the adhesion at the portion X in FIG. 3 was insufficient.
【0007】また、本発明者等は本発明の目的であるポ
リオレフィン部分とポリエステル部分からなる表面とポ
リエステル表面とを同時に熱融着する方法として、ポリ
オレフィン部分とポリエステル部分からなる表面をフレ
ーム処理した後にホットエアー処理し、一方、ポリエス
テル表面をホットエアー処理し、次いで該両表面を互い
に圧着して熱融着する方法を提案済(特願平2−237
29)であるが、ポリオレフィン部分とポリエステル部
分からなる表面をフレーム処理することにより、ポリエ
ステル部分が酸化または、加水分解され、ポリエステル
同士の熱融着性に悪影響を及ぼすという欠点があった。The inventors of the present invention have also proposed a method of simultaneously heat-sealing a surface composed of a polyolefin portion and a polyester portion and a polyester surface, which is an object of the present invention, after treating a surface composed of a polyolefin portion and a polyester portion with a flame. A method has been proposed in which hot air treatment is performed, while the polyester surface is subjected to hot air treatment, and then both surfaces are pressed against each other and thermally fused (Japanese Patent Application No. Hei 2-237).
29), however, there is a drawback that by subjecting the surface composed of the polyolefin portion and the polyester portion to a frame treatment, the polyester portion is oxidized or hydrolyzed, which adversely affects the heat fusion property between the polyesters.
【0008】従って、本発明の目的は、ポリオレフィン
部分とポリエステル部分からなる表面とポリエステル表
面とを同時に良好な接着強度をもって熱融着しうる方法
を提供することにある。Accordingly, an object of the present invention is to provide a method capable of simultaneously heat-sealing a surface comprising a polyolefin portion and a polyester portion and a polyester surface with good adhesive strength.
【0009】本発明者等は、前記課題に鑑みて鋭意研究
を行った結果、本発明の上記目的が、少なくともポリオ
レフィン部分の表面とポリエステル部分の表面とが同じ
側の面に並んでいる部材のこれら双方の表面を含む領域
である第1の面と、ポリエステル部分を表面に持つ部材
の該ポリエステル表面である第2の面とを、熱融着する
方法において、前記第1の面のうち、ポリオレフィン部
分はフレーム処理した後にホットエアー処理し、またポ
リエステル部分はホットエアー処理するがフレーム処理
は行なわず、一方、前記第2の面はホットエアー処理す
るがフレーム処理は行なわず、しかる後に、該第1の面
と第2の面とを互いに向き合わせて圧着して熱融着する
ことを特徴とする熱融着方法により達成されることを見
いだした。The inventors of the present invention have conducted intensive studies in view of the above problems, and as a result, the object of the present invention is to provide a member in which at least the surface of the polyolefin portion and the surface of the polyester portion are aligned on the same surface. In the method of heat-sealing a first surface which is a region including both surfaces and a second surface which is a polyester surface of a member having a polyester portion on the surface, of the first surface, The polyolefin portion is subjected to hot air treatment after flame treatment, and the polyester portion is subjected to hot air treatment but not flame treatment, while the second surface is subjected to hot air treatment but not flame treatment. It has been found that the first surface and the second surface can be attained by a heat fusion method characterized in that the first surface and the second surface are pressed against each other and heat-sealed.
【0010】以下に本発明を更に詳細に説明する。図1
は本発明の熱融着方法による容器胴部の製造の一例を示
す概略工程図である。図1において、容器内面に相当す
るポリエステル表面2及びその裏面に容器外面に相当す
るポリオレフィン表面3とその一方の端部4にポリエス
テル面2を有する積層体フィルム1を図1(A)に示す
ように端部4のポリオレフィン部分をガスバーナー5に
よりフレーム処理し、次いでホットエアー処理用ノズル
6によりホットエアー処理し、また、その際端部4のポ
リエステル部分も同時にホットエアー処理する。一方、
ポリエステル面の他の端部にはホットエアー処理用ノズ
ル6によるホットエアー処理が施される。このような処
理を施した後に、前記端部4を接着に必要な所定長さ内
側に折り込み、その外面と、図1(B)に示すようにホ
ットエアー処理した他の1端のポリエステル面とを互い
に合わせ、圧着して熱融着を行い、図1(C)に示すよ
うな接着された容器胴部が得られる。Hereinafter, the present invention will be described in more detail. FIG.
FIG. 2 is a schematic process diagram showing an example of manufacturing a container body by the heat fusion method of the present invention. In FIG. 1, a polyester film 2 having a polyester surface 2 corresponding to the inner surface of the container, a polyolefin surface 3 corresponding to the outer surface of the container on the back surface thereof, and a polyester film 2 having a polyester surface 2 at one end 4 thereof are shown in FIG. Then, the polyolefin portion at the end 4 is flame-processed by a gas burner 5 and then hot-air-processed by a hot-air processing nozzle 6, and the polyester portion at the end 4 is also hot-air-processed at the same time. on the other hand,
The other end of the polyester surface is subjected to hot air processing by a hot air processing nozzle 6. After such treatment, the end portion 4 is folded inside a predetermined length necessary for bonding, and the outer surface thereof and the other end of the polyester surface subjected to hot air treatment as shown in FIG. Are bonded to each other, pressed and thermally fused to obtain a bonded container body as shown in FIG. 1 (C).
【0011】本発明において、ポリオレフィン部分とポ
リエステル部分からなる表面のうちポリオレフィン部分
を処理するフレーム処理は主としてポリオレフィンを酸
化して極性基を導入するために行われるが、このような
フレーム処理としては、好ましくは、プロパンガス等の
可燃性ガスと空気の混合ガスで燃焼させたフレームと接
触させる方法が挙げられ、接触時間は好ましくは0.0
01〜1.5秒、更に好ましくは0.1〜0.6秒であ
る。すなわち、接触時間が0.001秒未満ではポリオ
レフィンの活性化が不十分であり、ポリオレフィンとポ
リエステルの接着が不十分となり、1.5秒を越える場
合はポリオレフィン部分が過剰加熱されることにより、
接着性の低下や非接着部分の表面性状の低下を引き起こ
す場合がある。In the present invention, the flame treatment for treating the polyolefin portion of the surface composed of the polyolefin portion and the polyester portion is mainly performed to oxidize the polyolefin and introduce a polar group. Preferably, a method of contacting with a flame burned with a mixed gas of a combustible gas such as propane gas and air, and the contact time is preferably 0.0
The time is from 01 to 1.5 seconds, more preferably from 0.1 to 0.6 seconds. That is, if the contact time is less than 0.001 second, the activation of the polyolefin is insufficient, the adhesion between the polyolefin and the polyester becomes insufficient, and if the contact time exceeds 1.5 seconds, the polyolefin portion is overheated,
In some cases, the adhesiveness or the surface properties of the non-adhesive portion may be reduced.
【0012】また、前記フレーム処理されたポリオレフ
ィン部分とポリエステル部分とからなる表面及びポリエ
ステル面に対して行なわれるホットエアー処理は表面部
を軟化させるために行なわれるが、このようなホットエ
アー処理は、通常300〜1000℃の加熱空気を0.
2〜5秒間ノズルを通して各々の面に吹きつけることに
より行なわれる。特に、前記ポリオレフィン部とポリエ
ステル部分とからなる表面を処理する場合は、通常前記
フレーム処理後、直ちに行なう必要はないが、インライ
ン処理で行なうことが好ましい。Further, the hot air treatment performed on the surface composed of the polyolefin portion and the polyester portion subjected to the frame treatment and the polyester surface is performed to soften the surface portion. Normally, heated air at 300 to 1000 ° C.
This is done by spraying each side through a nozzle for 2-5 seconds. In particular, when the surface composed of the polyolefin portion and the polyester portion is treated, it is not usually necessary to immediately carry out the treatment after the flame treatment, but it is preferable to carry out the treatment by in-line treatment.
【0013】本発明においては、前記両面をホットエア
ー処理した後、好ましくは速やかに両面を重ね圧着して
熱融着を行ない、軟化状態の両面を接着する。この際、
圧着は0.05kg/cm2 以上の圧力で行なうことが
好ましい。In the present invention, after both surfaces are subjected to hot air treatment, preferably, both surfaces are quickly and preferably laminated and press-bonded to perform heat fusion, thereby bonding the both surfaces in a softened state. On this occasion,
The pressure bonding is preferably performed at a pressure of 0.05 kg / cm 2 or more.
【0014】本発明において、少なくともポリオレフィ
ン部分とポリエステル部分からなる表面を有する部材と
は少なくともポリオレフィンが表面に露出する部分、例
えば図3におけるY部分、及びポリエステルが表面に露
出する部分、例えば図3におけるX部分を有するもので
ある。このようなポリオレフィンとしてはポリエチレ
ン、ポリプロピレン等が用いられ、ポリエステルとして
は、容器の形成を考慮すると、ヒートシール性に優れた
ヒートシール性ポリエステル樹脂が好ましく用いられ
る。ヒートシール性ポリエステル樹脂としては、例えば
ガラス移転温度Tgが50〜150℃である低結晶性又
は非結晶性ポリエステル樹脂が挙げられる。In the present invention, a member having a surface composed of at least a polyolefin portion and a polyester portion is a portion where at least the polyolefin is exposed on the surface, for example, a Y portion in FIG. 3, and a portion where the polyester is exposed on the surface, for example in FIG. It has an X portion. As such a polyolefin, polyethylene, polypropylene or the like is used. As polyester, a heat-sealable polyester resin having excellent heat-sealability is preferably used in consideration of formation of a container. Examples of the heat-sealable polyester resin include a low-crystalline or non-crystalline polyester resin having a glass transition temperature Tg of 50 to 150 ° C.
【0015】ガラス転移温度Tgが50℃以下のポリエ
ステル樹脂を用いた場合、包材加工中又は保管中等に樹
脂の軟化ベタツキによるブロッキング等が発生し作業上
問題となる場合があり、ガラス転移温度が150℃以上
のポリエステル樹脂を用いると、ヒートシール時の製袋
・製函が困難となる場合がある。また結晶性の高いポリ
エステル樹脂はヒートシール性が低下し、脆いという欠
点を有している。When a polyester resin having a glass transition temperature Tg of 50 ° C. or less is used, blocking or the like due to softening stickiness of the resin may occur during processing of a packaging material or during storage, which may cause a problem in work. If a polyester resin having a temperature of 150 ° C. or higher is used, it may be difficult to make a bag or box during heat sealing. Further, a polyester resin having high crystallinity has a disadvantage that heat sealability is reduced and the resin is brittle.
【0016】ポリエステル樹脂は多塩基酸と多価アルコ
ールの共重合体からなる。このような多塩基酸として
は、テレフタール酸を主成分として含むものが好まし
く、また、多価アルコールとしてはエチレングリコール
を主成分として含むものが好ましい。上記多塩基酸及び
多価アルコールはそれぞれコモノマー成分として他の多
塩基酸及び他の多価アルコールを含むことができる。The polyester resin comprises a copolymer of a polybasic acid and a polyhydric alcohol. As such a polybasic acid, one containing terephthalic acid as a main component is preferable, and as the polyhydric alcohol, one containing ethylene glycol as a main component is preferable. The polybasic acids and polyhydric alcohols can each contain other polybasic acids and other polyhydric alcohols as comonomer components.
【0017】本発明においては、上記ヒートシール性ポ
リエステルとしては具体的には、(1)主としてテレフ
タル酸を含む2種以上の二塩基酸と二価アルコールとの
共縮合重合体、(2)テレフタル酸と2種以上の二価ア
ルコールとの共縮合重合体、(3)ポリエチレンテレフ
タレート又は前記(1)若しくは(2)の共縮合重合体
と変性ポリオレフィンのポリマーアロイが挙げられる。In the present invention, specific examples of the heat-sealable polyester include (1) a co-condensation polymer of two or more dibasic acids mainly containing terephthalic acid and a dihydric alcohol, and (2) terephthalic acid. Examples include a co-condensation polymer of an acid and two or more dihydric alcohols, (3) polyethylene terephthalate, or a polymer alloy of the co-condensation polymer of (1) or (2) and a modified polyolefin.
【0018】テレフタル酸とのコモノマー成分として含
むことのできる他の二塩基酸としてはイソフタール酸、
ナフタリンジカルボン酸、ジフェニルジカルボン酸、ジ
フェノキシエタンジカルボン酸、ジフェニルエーテルジ
カルボン酸、ジフェニルスルホンジカルボン酸等の芳香
族ジカルボン酸;ヘキサヒドロテレフタール酸、ヘキサ
ヒドロイソフタール酸等の脂環族ジカルボン酸;アジピ
ン酸、セバシン酸、アゼライン酸等の脂肪族ジカルボン
酸;P−β−ヒドロキシエトキシ安息香酸、P−オキシ
安息香酸、ε−オキシカプロン酸等のオキシ酸等が挙げ
られる。Other dibasic acids which may be included as comonomer components with terephthalic acid include isophthalic acid,
Aromatic dicarboxylic acids such as naphthalene dicarboxylic acid, diphenyl dicarboxylic acid, diphenoxyethane dicarboxylic acid, diphenyl ether dicarboxylic acid and diphenyl sulfone dicarboxylic acid; alicyclic dicarboxylic acids such as hexahydroterephthalic acid and hexahydroisophthalic acid; adipic acid And aliphatic dicarboxylic acids such as sebacic acid and azelaic acid; and oxyacids such as P-β-hydroxyethoxybenzoic acid, P-oxybenzoic acid, and ε-oxycaproic acid.
【0019】また、二価アルコールとしては、例えばエ
チレングリコール、プロピレングリコール、1,4−ブ
タンジオール、1,4−ジシクロヘキサンジメタノー
ル、トリメチレングリコール、テトラメチレングリコー
ル、ヘキサメチレングリコール、デカメチレングリコー
ル、ネオペンチレングリコール、ジエチレングリコー
ル、1,1−シクロヘキサンジメチロール、1,4−シ
クロヘキサンジメチロール、2,2−ビス(4−β−ヒ
ドロキシエトキシフェニル)プロパン、ビス−(4−β
−ヒドロキシエトキシフェニル)スルホンシクロヘキサ
ンジオール、1,4−ビス(β−ヒドロキシエトキシ)
ベンゼン、1,3−ビス(β−ヒドロキシエトキシ)ベ
ンゼン等のグリコール類等が挙げられる。Examples of the dihydric alcohol include ethylene glycol, propylene glycol, 1,4-butanediol, 1,4-dicyclohexanedimethanol, trimethylene glycol, tetramethylene glycol, hexamethylene glycol, decamethylene glycol, and the like. Neopentylene glycol, diethylene glycol, 1,1-cyclohexane dimethylol, 1,4-cyclohexane dimethylol, 2,2-bis (4-β-hydroxyethoxyphenyl) propane, bis- (4-β
-Hydroxyethoxyphenyl) sulfonecyclohexanediol, 1,4-bis (β-hydroxyethoxy)
Glycols such as benzene and 1,3-bis (β-hydroxyethoxy) benzene are exemplified.
【0020】変性ポリオレフィンとしてはエチレンと不
飽和カルボン酸若しくはそのエステルとの共重合体、又
はアイオノマーが挙げられる。不飽和カルボン酸若しく
はそのエステルとしては、例えばアクリル酸、メタクリ
ル酸、アクリル酸メチル、メタクリル酸メチル、アクリ
ル酸エチル、メタクリル酸エチル等が挙げられる。エチ
レンと不飽和カルボン酸若しくはそのエステルとの共重
合体としては、不飽和カルボン酸の含有量が3〜20重
量%であるものが好ましく、エステルの場合はエステル
成分の含有量が1〜20重量%であるものが好ましい。Examples of the modified polyolefin include a copolymer of ethylene and an unsaturated carboxylic acid or an ester thereof, or an ionomer. Examples of the unsaturated carboxylic acid or its ester include acrylic acid, methacrylic acid, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate and the like. As a copolymer of ethylene and an unsaturated carboxylic acid or an ester thereof, one having an unsaturated carboxylic acid content of 3 to 20% by weight is preferable, and in the case of an ester, the content of the ester component is 1 to 20% by weight. % Is preferred.
【0021】本発明においては上記ポリエステル樹脂に
核剤又は種々の添加剤、例えば滑剤、アンチブロッキン
グ剤、安定剤、防曇剤、着色剤等を含有してもよい。こ
のような核剤としては2〜10μmの粒径を有するポリ
オレフィン類又は無機物の微粒子が用いられる。ポリオ
レフィン類としては例えば低密度ポリエチレン、高密度
ポリエチレン、線状低密度ポリエチレン、ポリプロピレ
ン等が挙げられ、無機物としては例えばカーボンブラッ
ク、タルク、石膏、シリカ、アルミナ、炭酸カルシウ
ム、二酸化チタン、グラファイト、粉末ガラス、粉末金
属等が挙げられる。In the present invention, the polyester resin may contain a nucleating agent or various additives such as a lubricant, an antiblocking agent, a stabilizer, an antifogging agent, a coloring agent, and the like. As such a nucleating agent, polyolefin or inorganic fine particles having a particle size of 2 to 10 μm are used. Examples of polyolefins include low-density polyethylene, high-density polyethylene, linear low-density polyethylene, and polypropylene.Examples of inorganic substances include carbon black, talc, gypsum, silica, alumina, calcium carbonate, titanium dioxide, graphite, and powdered glass. , Powdered metal and the like.
【0022】また、本発明においてポリエステル表面を
有する部材とは表面がポリエステルのみからなるものを
指し、このようなポリエステルとは前記のヒートシール
性ポリエステル樹脂と同様のものが用いられる。In the present invention, the member having a polyester surface refers to a member having a polyester surface only, and such a polyester is the same as the heat-sealable polyester resin described above.
【0023】本発明における、少なくともポリオレフィ
ン部分とポリエステル部分からなる表面を有する部材と
ポリエステル表面を有する部材は、各々別個のフィルム
部材であってもよいが、好ましくは容器の製造上、基体
上の一方の面側にポリエステル表面層を有し、他方の面
側に図3に示されるようなポリエステル面とポリオレフ
ィン面からなる端部を有するポリオレフィン表面層を有
する積層体フィルムが使用される。図3におけるポリエ
ステル表面を含む部分の折り返しの幅、すなわち、X部
分の長さとしては1〜15mmが容器製造上好ましい。
上記の積層体フィルムとしては、例えば、ポリエステル
/接着層/延伸プラスチック/金属箔/接着性樹脂/紙
/ポリエチレン等の層構成を有するものが用いられる。
上記層構成において、ポリエステル層及びポリエチレン
層の各々には前記のものが用いられるが、その厚さとし
てはそれぞれ5〜60μm、5〜50μmが好ましい。In the present invention, the member having a surface composed of at least a polyolefin portion and a polyester portion and the member having a polyester surface may be separate film members, respectively. A laminate film having a polyester surface layer on one side and a polyolefin surface layer having an end composed of a polyester side and a polyolefin side as shown in FIG. 3 on the other side is used. The folded width of the portion including the polyester surface in FIG. 3, that is, the length of the X portion is preferably 1 to 15 mm from the viewpoint of container production.
As the above-mentioned laminated film, for example, a film having a layer structure of polyester / adhesive layer / stretched plastic / metal foil / adhesive resin / paper / polyethylene is used.
In the above-mentioned layer constitution, the above-mentioned ones are used for each of the polyester layer and the polyethylene layer, and the thickness thereof is preferably 5 to 60 μm and 5 to 50 μm, respectively.
【0024】また、接着層とは接着性樹脂、該接着性樹
脂とポリオレフィンとの積層体、または接着剤あるいは
プライマーコート剤などからなるものが用いられる。前
記接着性樹脂としては、例えば密度0.910以下のエ
チレン−αオレフィン共重合体、不飽和カルボン酸変性
ポリオレフィン等が挙げられる。ポリオレフィンとして
は、ポリエチレン、ポリプロピレン、ポリブテン、エチ
レン−酢酸ビニル共重合体、エチレン−アクリル酸共重
合体、エチレン−メタクリル酸共重合体、エチレン−α
オレフィン共重合体体等が挙げられる。ここで、不飽和
カルボン酸変性ポリオレフィンとはカルボン酸基、酸無
水物基及びこれらの誘導体と共重合又はグラフト重合さ
せた上記ポリオレフィンを意味し、カルボン酸基、酸無
水物基及びこれらの誘導体として具体的にはメタクリル
酸、マレイン酸、フマル酸、メタクリル酸無水物、無水
マレイン酸、メタクリル酸エチル、アクリル酸グリシジ
ル、メタクリル酸ジグリシジル等が挙げられる。接着剤
としては、例えば1液又は2液反応型ウレタン系接着
剤、ポリエステル系接着剤、アクリル−ウレタン系接着
剤、エポキシ−ウレタン系接着剤等が挙げられ、プライ
マーコート剤としては、例えばポリエチレンイミン、ア
ルキルチタネート等が挙げられる。The adhesive layer is formed of an adhesive resin, a laminate of the adhesive resin and polyolefin, or an adhesive or a primer coating agent. Examples of the adhesive resin include an ethylene-α-olefin copolymer having a density of 0.910 or less, and an unsaturated carboxylic acid-modified polyolefin. Polyolefins include polyethylene, polypropylene, polybutene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-α
Olefin copolymers and the like can be mentioned. Here, the unsaturated carboxylic acid-modified polyolefin means the above-mentioned polyolefin copolymerized or graft-polymerized with a carboxylic acid group, an acid anhydride group and a derivative thereof, and as a carboxylic acid group, an acid anhydride group and a derivative thereof. Specific examples include methacrylic acid, maleic acid, fumaric acid, methacrylic anhydride, maleic anhydride, ethyl methacrylate, glycidyl acrylate, and diglycidyl methacrylate. Examples of the adhesive include one- or two-component reactive urethane-based adhesives, polyester-based adhesives, acryl-urethane-based adhesives, and epoxy-urethane-based adhesives. Examples of the primer coating agent include polyethyleneimine. And alkyl titanates.
【0025】金属箔のクラックによる内容物の透過を防
止する等のために、延伸プラスチック層を設けることが
できる。延伸プラスチック層に含有される延伸プラスチ
ックとしてはポリエステル樹脂又はナイロン樹脂を成形
後縦方向に4〜6倍、横方向に4〜6倍二軸延伸して二
軸延伸後熱固定した二軸延伸ポリエステル樹脂又は二軸
延伸ナイロン樹脂が好ましく用いられる。A stretched plastic layer can be provided to prevent permeation of the contents due to cracks in the metal foil. As the stretched plastic contained in the stretched plastic layer, a biaxially stretched polyester formed by molding a polyester resin or a nylon resin, biaxially stretching 4 to 6 times in the longitudinal direction and 4 to 6 times in the lateral direction, and then biaxially stretching and then heat-setting. A resin or a biaxially stretched nylon resin is preferably used.
【0026】また本発明に係る積層体を構成する基材に
は、容器の構造的支持体として用いられうるものならば
特に限定はないが、好ましくは基材の層構成中に紙を含
むものが好ましい。上記基材を構成する紙としては、坪
量100〜400g/m2 の白板紙、ミルクカートン用
原紙、耐酸紙等が好ましく用いられる。The base material constituting the laminate according to the present invention is not particularly limited as long as it can be used as a structural support of the container. Preferably, the base material contains paper in the layer structure. Is preferred. As the paper constituting the base material, white paperboard having a basis weight of 100 to 400 g / m 2 , base paper for milk cartons, acid-resistant paper, and the like are preferably used.
【0027】上記紙上には飲料の浸透防止等のため通常
金属箔が設けられており、金属箔としては厚さ6〜20
0μmのアルミニウムからなるものが好ましく用いられ
る。このような金属箔は例えば前述の接着性樹脂として
用いられたと同様の不飽和カルボン酸変性ポリオレフィ
ン、アイオノマー樹脂等により上記紙上に設けられる。
また、金属箔のかわりに、ガラス蒸着を施したプラスチ
ックフィルムを用いることもできる。[0027] A metal foil is usually provided on the paper to prevent the permeation of the beverage, and the metal foil has a thickness of 6 to 20 mm.
Those made of 0 μm aluminum are preferably used. Such a metal foil is provided on the paper using, for example, the same unsaturated carboxylic acid-modified polyolefin, ionomer resin, or the like as that used as the adhesive resin.
Further, instead of the metal foil, a plastic film on which glass is deposited can be used.
【0028】本発明の方法を好ましく適用しうる容器と
しては、浸透性の高い液体飲料、例えば酒、ウィスキ
ー、ジュース、コーヒー、麦茶、ウーロン茶、ミネラル
ウォーター、スープ類等を内容物とする種々の形態の容
器があげられる。The container to which the method of the present invention can be preferably applied is a liquid beverage having a high permeability, such as alcohol, whiskey, juice, coffee, barley tea, oolong tea, mineral water, and soups. Container.
【0029】[0029]
【作用】前記のような容器の熱融着方法において、ホッ
トエアー処理のみを行なったのではポリオレフィン/ポ
リエステル間の接着が不十分であり、またフレーム処理
のみを行なったのではポリエステル同志の接着が不十分
か又は不可能である。ところが本発明を用いて、ポリオ
レフィンはフレーム処理後にホットエアー処理を行なう
ことにより、そしてポリエステルはホットエアー処理の
みを行ない、しかる後に互いに圧着して熱融着を行なう
ことにより、ポリオレフィン/ポリエステル間及びポリ
エステル同志のいずれにおいても良好な接着が行なわれ
る。In the above-mentioned method for heat-sealing containers, the adhesion between the polyolefin and the polyester is insufficient if only the hot air treatment is performed, and the adhesion between the polyesters if only the frame treatment is performed. Insufficient or impossible. However, by using the present invention, the polyolefin is subjected to hot air treatment after the flame treatment, and the polyester is subjected to only hot air treatment, and thereafter, is subjected to heat bonding by press-bonding to each other. Good adhesion is achieved in any of the comrades.
【0030】[0030]
<実施例1>下記層構成を有する積層体の1端部を内層
の紙の層からポリエチレン層側を端から一定長さ除去
し、図3に示すようにポリエステル側の残部をポリエス
テル層が外層となるように折返し幅8mmで折り返し、
ポリエステル面とポリエチレン面からなる表面を有する
積層体フィルムを作成した。 ポリエステル(PET,厚さ60μm)/ 2軸延伸ポリ
エステル(OPET,厚さ12μm)/ アルミニウム箔
(Al,厚さ 9μm)/ アイオノマー(厚さ20μm)
/ 紙(坪量 320g/m2 )/ ポリエチレン(PE,厚
さ20μm) 但し、ポリエステルとしてはテレフタル酸、イソフタル
酸及びエチレングリコールからなるシーラー(Sela
r)PTX207(三井・デュポンポリケミカル社製)
を用いた。<Example 1> One end of a laminate having the following layer constitution was removed from the inner layer of paper from the polyethylene layer by a predetermined length from the end, and as shown in FIG. Wrap with a wrap width of 8 mm so that
A laminated film having a surface composed of a polyester surface and a polyethylene surface was prepared. Polyester (PET, thickness 60μm) / Biaxially stretched polyester (OPET, thickness 12μm) / Aluminum foil (Al, thickness 9μm) / Ionomer (thickness 20μm)
/ Paper (basis weight 320g / m 2 ) / Polyethylene (PE, thickness 20μm) However, as a polyester, a sealer made of terephthalic acid, isophthalic acid and ethylene glycol (Sela)
r) PTX207 (manufactured by Dupont Mitsui Polychemicals)
Was used.
【0031】上記作成したフィルムに対し、図1に示す
ようにポリエステル面とポリエチレン面とからなる表面
のうちポリエチレン部分を、プロパンと空気の混合ガス
によるフレームにて0.5秒あぶり、フレーム処理した
後ホットエアー処理ノズル6から400℃のホットエア
ーを1.5秒間上記フレーム処理済ポリエチレン部分と
ポリエステル部分及びもう一方のポリエステル面に吹き
つけホットエアー処理を行った。次いで、ホットエアー
処理した両面を直ちに0.2kg/cm3 の圧力で圧着
し、熱融着を行い、その接着強度を調べた。結果を次の
(表1)に示す。As shown in FIG. 1, the polyethylene film of the polyester film and the polyethylene film was exposed to the above-prepared film for 0.5 second with a frame made of a mixed gas of propane and air, and subjected to a frame treatment. Thereafter, hot air of 400 ° C. was blown from the hot air processing nozzle 6 to the above-mentioned flame-treated polyethylene portion, polyester portion, and the other polyester surface for 1.5 seconds to perform hot air treatment. Then, both surfaces subjected to the hot air treatment were immediately pressure-bonded at a pressure of 0.2 kg / cm 3 , heat-sealed, and the adhesive strength was examined. The results are shown in the following (Table 1).
【0032】[0032]
【表1】 [Table 1]
【0033】尚、接着強度は以下の方法にて測定した。 接着強度の測定:得られた積層体を幅15mmの短冊状
に切断し、両面の間を300mm/minの引張速度で
剥がし、その強度を測定した。The adhesive strength was measured by the following method. Measurement of adhesive strength: The obtained laminate was cut into a strip having a width of 15 mm, peeled between both sides at a tensile speed of 300 mm / min, and the strength was measured.
【0034】<実施例2>前記実施例1におけるポリエ
ステルを1,4−シクロヘキサンジメタノールを含むグ
リコール成分と二塩基酸成分との縮合物であるPET
G 5116(イーストマン社製)にかえた以外は、前
記実施例1と同様にして接着強度を測定した。結果を前
記(表1)に示す。Example 2 PET obtained by condensing the polyester of Example 1 with a glycol component containing 1,4-cyclohexanedimethanol and a dibasic acid component
The adhesive strength was measured in the same manner as in Example 1 except that G5116 (manufactured by Eastman) was used. The results are shown in the above (Table 1).
【0035】<実施例3〜5>前記実施例1におけるホ
ットエアー処理時間又はフレーム処理時間を前記(表
1)に示すようにかえた以外は、前記実施例1と同様に
して実施例3〜5を行ない、各々接着強度を測定した。
結果を前記(表1)に示す。<Embodiments 3 to 5> Except that the hot air processing time or the frame processing time in Embodiment 1 was changed as shown in (Table 1), Embodiments 3 to 5 were performed in the same manner as in Embodiment 1. 5, and the adhesive strength was measured for each.
The results are shown in the above (Table 1).
【0036】<比較例1>フレーム処理を行なわない以
外は、前記実施例1と同様にして行ない接着強度を測定
した。結果を前記(表1)に示す。<Comparative Example 1> The adhesive strength was measured in the same manner as in Example 1 except that the frame treatment was not performed. The results are shown in the above (Table 1).
【0037】<比較例2〜3>比較例1においてホット
エアー処理の時間を前記(表1)に示すように変更した
以外は、前記比較例1と同様にして比較例2及び3を行
ない、各々接着強度を測定した。結果を前記(表1)に
示す。Comparative Examples 2 and 3 Comparative Examples 2 and 3 were performed in the same manner as in Comparative Example 1 except that the time of the hot air treatment was changed as shown in Table 1 above. The adhesive strength was measured for each. The results are shown in the above (Table 1).
【0038】<比較例4>ホットエアー処理を行なわな
い以外は、前記実施例1と同様にして行ない接着強度を
測定した。結果を前記(表1)に示す。Comparative Example 4 The adhesive strength was measured in the same manner as in Example 1 except that the hot air treatment was not performed. The results are shown in the above (Table 1).
【0039】<比較例5〜7>前記比較例4においてフ
レーム処理時間を前記(表1)に示すようにかえた以外
は、比較例4と同様にして比較例5〜7を行ない、各々
接着強度を測定した。結果を前記(表1)に示す。<Comparative Examples 5 to 7> Comparative Examples 5 to 7 were performed in the same manner as in Comparative Example 4 except that the frame processing time in Comparative Example 4 was changed as shown in Table 1 above. The strength was measured. The results are shown in the above (Table 1).
【0040】前記(表1)より明らかなように、ホット
エアー処理のみを行なった比較例1〜3ではポリオレフ
ィン/ポリエステル間の接着が不十分であり、フレーム
処理のみを行なった比較例4〜7ではポリエステル同志
の接着が不十分又は不可能であるが、実施例1〜5にお
けるように、フレーム処理後にホットエアー処理を行な
うことにより、ポリオレフィン/ポリエステル間及びポ
リエステル同志のいずれにおいても良好な接着が行なわ
れた。As is clear from the above (Table 1), in Comparative Examples 1 to 3 in which only the hot air treatment was performed, the adhesion between polyolefin / polyester was insufficient, and in Comparative Examples 4 to 7 in which only the frame treatment was performed. In this case, adhesion between polyesters is insufficient or impossible. However, by performing hot air treatment after the frame treatment as in Examples 1 to 5, good adhesion can be obtained both between the polyolefin / polyester and between the polyesters. It was done.
【0041】[0041]
【発明の効果】以上詳細に説明したように、本発明の熱
融着方法により、ポリオレフィン部分とポリエステル部
分とからなる表面と、ポリエステル表面とを、同時に且
つインラインにより、良好な接着強度をもって熱融着す
ることができる。As described above in detail, according to the heat-sealing method of the present invention, the surface consisting of the polyolefin portion and the polyester portion and the polyester surface are simultaneously and in-line heat-sealed with good adhesive strength. You can wear it.
【0042】[0042]
【図1】本発明の熱融着方法の一実施例を示す概略工程
図である。FIG. 1 is a schematic process diagram showing one embodiment of the heat fusion method of the present invention.
【図2】本発明の方法により作成される容器の一例の胴
部を示す概略斜視図である。FIG. 2 is a schematic perspective view showing a body of an example of a container produced by the method of the present invention.
【図3】図2のA部拡大断面図であり、本発明の方法に
より接着される部分の一例を示す。FIG. 3 is an enlarged cross-sectional view of a portion A in FIG. 2, showing an example of a portion bonded by the method of the present invention.
1…積層体フィルム 2…ポリエステル面 3…ポリオレフィン部分とポリエステル部分とからなる
表面 4…端部 5…ガスバーナー 6…ホットエアー処理用ノズル 7…ポリエステル層 8…接着層 9…二軸延伸ポリエステル層 10…紙 11…アルミニウム箔 12…ポリオレフィン層 X…ポリエステル面 Y…ポリオレフィン面 A…端部熱融着部分DESCRIPTION OF SYMBOLS 1 ... Laminate film 2 ... Polyester surface 3 ... Surface consisting of polyolefin part and polyester part 4 ... End part 5 ... Gas burner 6 ... Nozzle for hot air treatment 7 ... Polyester layer 8 ... Adhesive layer 9 ... Biaxially stretched polyester layer DESCRIPTION OF SYMBOLS 10 ... Paper 11 ... Aluminum foil 12 ... Polyolefin layer X ... Polyester surface Y ... Polyolefin surface A ... End heat-fusion part
フロントページの続き (56)参考文献 特開 昭49−99371(JP,A) 特開 昭57−135141(JP,A) 特開 平2−80235(JP,A) 米国特許4698246(US,A)Continuation of the front page (56) References JP-A-49-99371 (JP, A) JP-A-57-135141 (JP, A) JP-A-2-80235 (JP, A) US Patent 4,986,246 (US, A)
Claims (1)
リエステル部分の表面とが同じ側の面に並んでいる部材
のこれら双方の表面を含む領域である第1の面と、ポリ
エステル部分を表面に持つ部材の該ポリエステル表面で
ある第2の面とを、熱融着する方法において、 前記第1の面のうち、ポリオレフィン部分はフレーム処
理した後にホットエアー処理し、またポリエステル部分
はホットエアー処理するがフレーム処理は行なわず、一
方、前記第2の面はホットエアー処理するがフレーム処
理は行なわず、しかる後に、該第1の面と第2の面とを
互いに向き合わせて圧着して熱融着することを特徴とす
る熱融着方法。1. A member in which at least a surface of a polyolefin portion and a surface of a polyester portion are arranged on the same side surface, a first surface which is a region including both surfaces, and a member having a polyester portion on the surface. In the method of heat-sealing the second surface which is the polyester surface, the first surface is subjected to hot air treatment after the polyolefin portion is subjected to the flame treatment, and the polyester portion is subjected to the hot air treatment. Is performed, on the other hand, the second surface is subjected to hot air treatment but is not subjected to frame treatment, and thereafter, the first surface and the second surface are pressure-bonded to each other and heat-sealed. A heat fusion method characterized by the following.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3209337A JP2661423B2 (en) | 1991-08-21 | 1991-08-21 | Heat fusion method |
DE69207843T DE69207843T2 (en) | 1991-08-01 | 1992-07-30 | Hot glue process |
EP92112987A EP0529336B1 (en) | 1991-08-01 | 1992-07-30 | Method of thermal fusion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3209337A JP2661423B2 (en) | 1991-08-21 | 1991-08-21 | Heat fusion method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05254042A JPH05254042A (en) | 1993-10-05 |
JP2661423B2 true JP2661423B2 (en) | 1997-10-08 |
Family
ID=16571282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3209337A Expired - Fee Related JP2661423B2 (en) | 1991-08-01 | 1991-08-21 | Heat fusion method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2661423B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013043684A (en) * | 2011-08-25 | 2013-03-04 | Daiwa Can Co Ltd | Paper container |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4698246A (en) | 1986-03-05 | 1987-10-06 | International Paper Company | Novel laminates for paperboard cartons and a process of forming said laminates |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4999371A (en) * | 1973-01-22 | 1974-09-19 | ||
JPS57135141A (en) * | 1981-02-16 | 1982-08-20 | Dainippon Printing Co Ltd | Manufacture of packing case |
JP2619344B2 (en) * | 1988-09-16 | 1997-06-11 | アロン化成株式会社 | Laminated structure |
-
1991
- 1991-08-21 JP JP3209337A patent/JP2661423B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4698246A (en) | 1986-03-05 | 1987-10-06 | International Paper Company | Novel laminates for paperboard cartons and a process of forming said laminates |
Also Published As
Publication number | Publication date |
---|---|
JPH05254042A (en) | 1993-10-05 |
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