JPH04240099A - Fusion cutter for fusible seal - Google Patents

Fusion cutter for fusible seal

Info

Publication number
JPH04240099A
JPH04240099A JP3003280A JP328091A JPH04240099A JP H04240099 A JPH04240099 A JP H04240099A JP 3003280 A JP3003280 A JP 3003280A JP 328091 A JP328091 A JP 328091A JP H04240099 A JPH04240099 A JP H04240099A
Authority
JP
Japan
Prior art keywords
fusing
blade
resin
fusion
coating
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
JP3003280A
Other languages
Japanese (ja)
Inventor
Yoshinori Yoshida
吉田　好典
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP3003280A priority Critical patent/JPH04240099A/en
Publication of JPH04240099A publication Critical patent/JPH04240099A/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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C66/137—Beaded-edge joints or bead seals
    • 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
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0046—Preventing sticking together, e.g. of some areas of the parts to be joined by the use of a lubricant, e.g. fluid, powder
    • B29C66/00461—Preventing sticking together, e.g. of some areas of the parts to be joined by the use of a lubricant, e.g. fluid, powder being liquid, e.g. oil based
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8124—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the structure of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81241—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the structure of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps being porous or sintered

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

PURPOSE:To lessen the amount of resin attachment at the time of fusion cutting, by coating fine grains of NiCr alloy having specified grain sizes with a Si type oil, spraying it to the surface of a fusion cutter made of metal, and forming a coating layer. CONSTITUTION:Two hot melting sheets, for example non-woven cloth 1, are placed one over the other, transported by a belt conveyor 2, and cut by a heated fusion cutter 3 of metal, which moves up and down in the cutting position. The cut laminate is sealed and sacked, when the molten resin tends to attach to the fusion cutter 3. When the amount of resin attachment becomes too much, fusion of the cut part becomes imperfect to require removal of the attached resin 4. Therefore, fine grains of NiCr alloy having grains sizes Rmax 40-80mum are coated with Si type oil, and this is sprayed and applied to the surface of the fusion cutter 3 so as to form a coating layer of 100mum thick. Thereby the molten resin will not attach easily, and frequency of resin removing works can be decreased.

Description

【発明の詳細な説明】[Detailed description of the invention]

【０００１】0001

【産業上の利用分野】本発明は、フィルム、ことに不織
布のようなホットメルト性の積層シートを溶断シールす
るために用いるのに適した溶断刃に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fusing blade suitable for fusing and sealing films, particularly hot-melt laminated sheets such as nonwoven fabrics.

【０００２】0002

【従来技術】フィルムや不織布等のホットメルト性のシ
ートの溶断シールが行われる分野に袋状物の製造工程が
ある。かゝる製袋工程では一般に、図１に示すように、
例えば不織布１を二枚重ねにしてベルトコンベア２で搬
送し、溶断位置において上下動する加熱した溶断刃３で
溶断シールするようになっている。2. Description of the Related Art There is a process for manufacturing bag-like articles in the field of fusing and sealing hot-melt sheets such as films and non-woven fabrics. In such a bag making process, generally, as shown in Figure 1,
For example, two sheets of nonwoven fabric 1 are stacked and conveyed by a belt conveyor 2, and the sheets are fused and sealed using a heated fusing blade 3 that moves up and down at a fusing position.

【０００３】このような溶断刃には、不織布シートであ
る場合ことに溶断時に溶融した樹脂が付着しがちとなり
、溶断を繰返すに従って図２に示すように付着が進行し
、付着量が多くなると、溶断部の融着が不完全となり、
ヒートシール強度が低下するようになる。そのため定期
的に溶断刃の付着樹脂４を除去していた。[0003] In the case of a nonwoven fabric sheet, melted resin tends to adhere to such a cutting blade, and as the cutting process is repeated, the adhesion progresses as shown in FIG. 2, and as the amount of adhesion increases, The fusion of the fused part becomes incomplete,
Heat sealing strength will decrease. Therefore, the resin 4 attached to the fusing blade was removed periodically.

【０００４】0004

【発明が解決しようとする課題】溶断刃の付着樹脂を除
去するのに手間がかゝるうえ、何よりも付着樹脂の除去
は、装置を停止してから行わねばならないため生産性の
低下を来たす。本発明は、上記の問題を解消するため溶
融樹脂との付着を生じにくゝしようとするものであるが
、かゝる溶断刃を得るに当っては、耐熱性を有すること
、溶断部のシール性が損われないようにすることなどが
求められ、通常考えられるテフロン加工では耐熱性に難
点があり、表面温度が４００℃程度にも達するような溶
断刃には適さない。[Problem to be Solved by the Invention] Removing the resin adhered to the fusing blade is time-consuming, and above all, the adhering resin must be removed after the equipment has been stopped, which reduces productivity. . In order to solve the above-mentioned problem, the present invention attempts to make it difficult to cause adhesion with molten resin, but in order to obtain such a fusing blade, it is necessary to have heat resistance and to prevent the fusing part from sticking. It is required to ensure that the sealing performance is not impaired, and the conventional Teflon processing has a drawback in heat resistance and is not suitable for fusing blades whose surface temperature reaches about 400°C.

【０００５】本発明は、かゝる点に鑑みてなされたもの
で、耐熱性があり、溶融樹脂の付着が生じにくい溶断刃
を提供しようとするもので、溶断シール工程の生産性を
向上させることを目的とする。[0005] The present invention has been made in view of the above, and aims to provide a heat-resistant fusing blade that is resistant to adhesion of molten resin, thereby improving the productivity of the fusing sealing process. The purpose is to

【０００６】[0006]

【課題の解決手段及び作用】本発明の溶断刃は、溶融樹
脂との接着力を小さくして溶融樹脂の付着が生じにくゝ
したものである。溶融樹脂との接着力を小さくする一つ
の手段は、溶断刃の表面の親和力（界面張力）を小さく
することである。[Means for Solving the Problems and Effects] The fusing blade of the present invention has a low adhesive force with the molten resin to prevent the molten resin from adhering to the blade. One way to reduce the adhesive force with the molten resin is to reduce the affinity (interfacial tension) of the surface of the fusing blade.

【０００７】したがって本発明の溶断刃は、表面の親和
力が小であることを特徴する。表面の親和力が小である
一つの好ましい態様は、粗度Ｒｍａｘ　が４０〜８０μ
のＮｉ　Ｃｒ　系合金の細粒をシリコン系オイルでコー
ティング処理して金属製の溶断刃に吹付塗装し、溶断刃
表面にＮｉ　Ｃｒ　系合金よりなる厚み１００μのコー
ティング層を形成してなるものである。[0007] Therefore, the fusing blade of the present invention is characterized by a low surface affinity. One preferable embodiment in which the surface affinity is small is that the roughness Rmax is 40 to 80μ.
Fine grains of Ni Cr alloy are coated with silicone oil and sprayed onto a metal fusing blade to form a 100 μ thick coating layer made of Ni Cr alloy on the surface of the fusing blade. .

【０００８】別の好ましい態様では、ＷＣ・Ｎｉ　Ｃｒ
　系合金の細粒の粗度Ｒｍａｘ　が７〜１５μ、コーテ
ィング層の厚みが３０μとされる。In another preferred embodiment, WC.Ni Cr
The roughness Rmax of the fine grains of the alloy is 7 to 15μ, and the thickness of the coating layer is 30μ.

【０００９】更に別の好ましい態様においては、粗度Ｒ
ｍａｘ　が１５〜２０μのＡｌ２　Ｏ３　Ｔｉ　Ｏ２　
系セラミックの細粒をシリコン系オイルでコーティング
処理して金属製の溶断刃に吹付塗装し、溶断刃表面に厚
さ１００μのセラミックよりなるコーティング層を形成
してなるものである。本発明に係る溶断刃は、溶融樹脂
の付着し易い、不織布を溶断するのに最も適しているが
、フィルムその他ホットメルト性シートの溶断にも使用
することができ、溶融樹脂の付着を生じにくゝする。In yet another preferred embodiment, the roughness R
Al2 O3 Ti O2 with max of 15-20μ
The fine grains of ceramic are coated with silicone oil and spray-painted onto a metal fusing blade to form a coating layer of ceramic with a thickness of 100 μm on the surface of the fusing blade. The fusing blade according to the present invention is most suitable for fusing nonwoven fabrics to which molten resin easily adheres, but it can also be used for fusing and cutting films and other hot-melt sheets, without causing molten resin to adhere. I'm going to do it.

【００１０】0010

【発明の効果】本発明の溶断刃によれば、溶断時の樹脂
の付着量を少なくすることができるため付着樹脂を除去
する作業回数を減らすことができ、溶断シール工程での
生産性を向上させることができる。[Effects of the Invention] According to the fusing blade of the present invention, since the amount of resin adhering during fusing can be reduced, the number of operations to remove the adhering resin can be reduced, and productivity in the fusing sealing process is improved. can be done.

【００１１】また溶融樹脂の付着し易い不織布の溶断に
用いれば、最も効果的である。[0011] Furthermore, it is most effective when used for cutting nonwoven fabrics to which molten resin easily adheres.

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

【図１】溶断時を示す断面図である。FIG. 1 is a cross-sectional view showing a melting state.

【図２】溶断刃に樹脂が付着した状態を示す断面図であ
る。FIG. 2 is a cross-sectional view showing a state in which resin is attached to the fusing blade.

【符号の説明】[Explanation of symbols]

１　　不織布　　　　　　　　　　　　　　　　２　　
ベルトコンベア３　　溶断刃1 Non-woven fabric 2
Belt conveyor 3 fusing blade

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】　　ホットメルト性の積層シートを溶断シ
ールするために用いられる溶断刃において、刃の表面の
親和力を小にしたことを特徴とする溶断シール用溶断刃
。1. A fusing blade for fusing and sealing, which is used for fusing and sealing hot-melt laminated sheets, characterized in that the affinity of the surface of the blade is reduced. 【請求項２】　　溶断刃表面の親和力を小にする処理を
吹付塗装によって行うことを特徴とする溶断シール用溶
断刃。2. A fusing blade for a fusing seal, characterized in that a treatment for reducing the affinity of the fusing blade surface is performed by spray painting. 【請求項３】　　溶断刃は金属製であり、吹付塗装は、
粗度Ｒｍａｘ　４０〜８０μのＮｉ　Ｃｒ　系合金の細
粒をシリコン系オイルでコーティング処理して行われ、
溶断刃表面にＮｉ　Ｃｒ　合金よりなるコーティング層
が形成される請求項２記載の溶断シール用溶断刃。[Claim 3] The fusing blade is made of metal, and the spray coating is
It is done by coating fine grains of Ni Cr alloy with a roughness Rmax of 40 to 80μ with silicone oil,
The fusing blade for fusing seals according to claim 2, wherein a coating layer made of a Ni Cr alloy is formed on the surface of the fusing cutting blade. 【請求項４】　　溶断刃は金属製であり、吹付塗装は粗
度Ｒｍａｘ　が７〜１５μのＷＣ・Ｎｉ　Ｃｒ　合金の
細粒をシリコン系オイルでコーティング処理して行われ
、溶断刃表面にＷＣ・Ｎｉ　Ｃｒ　合金よりなるコーテ
ィング層が形成される請求項２記載の溶断シール用溶断
刃。4. The fusing blade is made of metal, and the spray coating is performed by coating fine grains of WC/NiCr alloy with a roughness Rmax of 7 to 15 μm with silicone oil, so that the surface of the fusing blade is coated with WC/NiCr alloy particles. The fusing blade for fusing seals according to claim 2, wherein a coating layer made of a Ni Cr alloy is formed. 【請求項５】　　溶断刃は金属製であり、吹付塗装は、
粗度Ｒｍａｘ　１５〜２０μのＡｌ２　Ｏ３　ＴｉＯ２
　系セラミックの細粒をシリコン系オイルでコーティン
グして行われ、溶断刃表面に上記セラミックよりなるコ
ーティング層が形成される請求項２記載の溶断シール用
溶断刃。[Claim 5] The fusing blade is made of metal, and the spray coating is
Al2O3TiO2 with roughness Rmax 15-20μ
3. The fusing blade for fusing seals according to claim 2, wherein the cutting is performed by coating fine grains of a ceramic based on silicone oil, and a coating layer made of the ceramic is formed on the surface of the fusing cutting blade.
JP3003280A 1991-01-16 1991-01-16 Fusion cutter for fusible seal Pending JPH04240099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3003280A JPH04240099A (en) 1991-01-16 1991-01-16 Fusion cutter for fusible seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3003280A JPH04240099A (en) 1991-01-16 1991-01-16 Fusion cutter for fusible seal

Publications (1)

Publication Number Publication Date
JPH04240099A true JPH04240099A (en) 1992-08-27

Family

ID=11553009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3003280A Pending JPH04240099A (en) 1991-01-16 1991-01-16 Fusion cutter for fusible seal

Country Status (1)

Country Link
JP (1) JPH04240099A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0720300U (en) * 1993-09-24 1995-04-11 株式会社マークス Mark fabric heat cutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0720300U (en) * 1993-09-24 1995-04-11 株式会社マークス Mark fabric heat cutter

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