JP2001009915A - Sealing method and apparatus - Google Patents

Sealing method and apparatus

Info

Publication number
JP2001009915A
JP2001009915A JP11188085A JP18808599A JP2001009915A JP 2001009915 A JP2001009915 A JP 2001009915A JP 11188085 A JP11188085 A JP 11188085A JP 18808599 A JP18808599 A JP 18808599A JP 2001009915 A JP2001009915 A JP 2001009915A
Authority
JP
Japan
Prior art keywords
sealed
rolls
basis weight
difference
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11188085A
Other languages
Japanese (ja)
Other versions
JP3693856B2 (en
Inventor
Wataru Saka
渉 坂
Masanori Endo
正規 遠藤
Hiroshi Teratani
弘 寺谷
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.)
Kao Corp
Original Assignee
Kao Corp
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 Kao Corp filed Critical Kao Corp
Priority to JP18808599A priority Critical patent/JP3693856B2/en
Publication of JP2001009915A publication Critical patent/JP2001009915A/en
Application granted granted Critical
Publication of JP3693856B2 publication Critical patent/JP3693856B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours
    • B29C66/2442—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours in the form of a single arc of circle
    • 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
    • B29C66/80—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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements 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
    • B29C66/40—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
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • 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
    • B29C66/72—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
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4871—Underwear
    • B29L2031/4878—Diapers, napkins

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To certainly seal the whole of parts to be sealed by using a pair of rolls even in such a case that an article to be sealed has thickness difference or basis wt. difference in its parts to be sealed. SOLUTION: A long article 1 to be sealed comprising at least two sheets and having thickness difference or basis wt. difference in its width direction is passed through the nip between a pair of rolls 2, 3 to seal the upper and lower sheets 11, 12 constituting the article to be sealed. In this sealing method, at least one roll 2 has the difference (d) in level corresponding to thickness difference or basis wt. difference in the axial length direction thereof.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、少なくとも二枚の
シートからなる被シール物における該被シール物を構成
する上面シートと下面シートとの間を確実にシールする
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reliably sealing between an upper sheet and a lower sheet constituting an object to be sealed in at least two sheets.

【０００２】[0002]

【従来の技術及び発明が解決しようとする課題】従来、
少なくとも二枚のシートからなる被シール物を、熱エン
ボスロール間に挿通させ、該被シール物を構成する上面
シートと下面シートとの間をシールする方法が広く知ら
れている。そして、被シール部に厚み差や坪量差を有す
る場合、相対的に薄いところや坪量の少ないところのシ
ール強度が低くなる問題があるが、その被シール物にお
ける該被シール部を十分な強度でシールする方法とし
て、該被シール物における厚みや坪量が異なる部分毎
に、複数のシール装置を用いてシールを行う方法が知ら
れている。2. Description of the Related Art
2. Description of the Related Art There is widely known a method of inserting an object to be sealed including at least two sheets between hot embossing rolls to seal a gap between an upper sheet and a lower sheet constituting the object to be sealed. When there is a difference in thickness or basis weight between the parts to be sealed, there is a problem that the sealing strength at a relatively thin place or a place with a small basis weight is low. As a method of sealing with strength, there is known a method of performing sealing using a plurality of sealing devices for each portion of the object to be sealed having different thicknesses and basis weights.

【０００３】しかし、このように複数のシール装置を用
いる場合、装置設置のために広いスペースが必要であ
る。また、各シール装置のシール位置同士の位置合わせ
が必要であり、そのための位置合わせ装置やそのための
制御が必要となる。また、他の方法として、被シール部
におけるシール圧が不足する部分のシール強度を向上さ
せるために、その部分のシール温度を変えたり、その部
分にホットメルトを活用した特殊加工を施す方法があ
る。しかし、これらの方法は、そのための制御や特殊加
工によりコストが増大する。However, when a plurality of sealing devices are used as described above, a large space is required for installing the devices. In addition, it is necessary to align the sealing positions of the respective sealing devices, and a positioning device for that purpose and a control therefor are required. Further, as another method, there is a method of changing the sealing temperature of a portion where the sealing pressure is insufficient in the portion to be sealed in order to improve the sealing strength, or performing a special process using hot melt on the portion. . However, these methods increase the cost due to the control and special processing for that.

【０００４】従って、本発明の目的は、被シール物が、
被シール部に厚み差や坪量差を有する場合であっても、
一対のロールを用いて、被シール部の全体を確実にシー
ルすることができるシール方法及びシール装置を提供す
ることにある。Accordingly, it is an object of the present invention to provide an object to be sealed,
Even if there is a difference in thickness or basis weight in the sealed part,
An object of the present invention is to provide a sealing method and a sealing device that can reliably seal the entirety of a sealed portion using a pair of rolls.

【０００５】[0005]

【課題を解決するための手段】本発明は、少なくとも二
枚のシートからなる長尺状の被シール物で且つその幅方
向に厚み差又は坪量差を有する被シール物を、一対のロ
ール間に挿通し、該被シール物を構成する上面シートと
下面シートとの間をシールするシール方法であって、少
なくとも一方の前記ロールは、該ロールの軸長方向に、
前記厚み差又は前記坪量差に対応する段差を有している
シール方法を提供することにより上記の目的を達成した
ものである。SUMMARY OF THE INVENTION The present invention relates to a method for sealing a long object to be sealed having at least two sheets and having a difference in thickness or basis weight in the width direction between a pair of rolls. A sealing method for sealing between the upper sheet and the lower sheet constituting the object to be sealed, at least one of the rolls in the axial direction of the rolls,
The above object has been achieved by providing a sealing method having a step corresponding to the thickness difference or the basis weight difference.

【０００６】また、本発明は、相対向する一対のロール
を備えており、両ロール間に、少なくとも二枚のシート
からなる長尺状の被シール物で且つその幅方向に厚み差
又は坪量差を有する被シール物が挿通され、該被シール
物を構成する上面シートと下面シートとの間がシールさ
れるようになされているシール装置であって、前記被シ
ール物の肉厚部分又は高坪量部分が挿通される両ロール
間の隙間が、該被シール物の肉薄部分又は低坪量部分が
挿通される両ロール間の隙間より大きくなされているシ
ール装置を提供することにより上記の目的を達成したも
のである。Further, the present invention comprises a pair of rolls facing each other, and between the rolls, a long object to be sealed consisting of at least two sheets and having a difference in thickness or basis weight in the width direction thereof. A sealing device in which an object to be sealed having a difference is inserted and a gap between an upper sheet and a lower sheet constituting the object to be sealed is sealed, wherein a thick portion or a height of the object to be sealed is provided. The above object is achieved by providing a sealing device in which a gap between both rolls through which a basis weight portion is inserted is larger than a gap between both rolls through which a thin portion or a low basis weight portion of the object to be sealed is inserted. Is achieved.

【０００７】[0007]

【発明の実施の形態】以下本発明をその好ましい実施形
態に基づいて説明する。本発明のシール方法及びシール
装置の好ましい実施形態について説明する。本実施形態
のシール方法の実施には、以下に示す本実施形態のシー
ル装置が好ましく用いられる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on preferred embodiments. A preferred embodiment of the sealing method and the sealing device of the present invention will be described. For the implementation of the sealing method of the present embodiment, the following sealing device of the present embodiment is preferably used.

【０００８】本実施形態のシール装置は、上ロールユニ
ット及び下ロールユニットを備えている。上ロールユニ
ットは、上ロール２、該上ロール２の回転軸（図示せ
ず）、該回転軸に接続されている駆動モータ（図示せ
ず）及び該上ロール２の内部に設けられたロール加熱手
段（図示せず）を備えており、該駆動モータの駆動によ
り、上ロール２は、図１中矢印Ａの方向に回転するよう
になされている。また、下ロールユニットは、上ロール
２と相対向させて配置された下ロール３、該下ロール３
の回転軸（図示せず）、該回転軸に接続している駆動モ
ータ（図示せず）、及び該下ロール３の内部に設けられ
たロール加熱手段（図示せず）を備えており、該駆動モ
ータの駆動により、下ロール３は上ロール２と同期し
て、図１中矢印Ｂで示す方向に回転するようになされて
いる。尚、上ロールユニットは、油圧ユニットにより上
下動可能になされている。また、本発明の方法及び装置
においては、本実施形態のように、一対のロールの内の
少なくとも一方が、加熱手段を備えていることが好まし
い。[0008] The sealing device of this embodiment includes an upper roll unit and a lower roll unit. The upper roll unit includes an upper roll 2, a rotation shaft (not shown) of the upper roll 2, a drive motor (not shown) connected to the rotation shaft, and a roll heating provided inside the upper roll 2. Means (not shown) are provided, and the upper roll 2 is configured to rotate in the direction of arrow A in FIG. The lower roll unit includes a lower roll 3 disposed opposite to the upper roll 2,
, A drive motor (not shown) connected to the rotation shaft, and a roll heating means (not shown) provided inside the lower roll 3. The drive of the drive motor causes the lower roll 3 to rotate in a direction indicated by an arrow B in FIG. 1 in synchronization with the upper roll 2. The upper roll unit is vertically movable by a hydraulic unit. Further, in the method and the apparatus of the present invention, as in the present embodiment, it is preferable that at least one of the pair of rolls includes a heating unit.

【０００９】上ロール２及び下ロール３それぞれの外周
面には、図１に示すように、両ロール２，３間に挿通さ
れる被シール物１に接触し、該被シール物１を押圧する
押圧面２１，３１と、両ロール２，３の外周面が窪んで
形成され該被シール物１に接触しない非接触部２２，３
２とが形成されている。尚、「被シール物に接触しな
い」とは、シールするための接触をしないことを意味
し、シールに関与しない接触を排除するものではない。As shown in FIG. 1, the outer peripheral surface of each of the upper roll 2 and the lower roll 3 comes into contact with the object 1 to be sealed inserted between the two rolls 2 and 3, and presses the object 1 to be sealed. Non-contact portions 22 and 3 which are formed so that the pressing surfaces 21 and 31 and the outer peripheral surfaces of the two rolls 2 and 3 do not contact the object 1
2 are formed. In addition, "does not contact with the object to be sealed" means that there is no contact for sealing, and does not exclude a contact which is not involved in the sealing.

【００１０】上ロール２には、軸線に対して対称の２ヵ
所に押圧面２１が形成されており、下ロール３にも同様
の２ヵ所に押圧面３１が形成されている。そして、両ロ
ール２，３は、両ロールの押圧面２１，３１同士が、被
シール物１を介して接触するように、同期して回転する
ようになされている。また、上下ロール２，３の押圧面
２１，３１には、それぞれ、図２（ｂ）に示すように、
相互に噛み合う複数の溝部及び突部がそれぞれ周方向に
亘って形成されている。The upper roll 2 has two pressing surfaces 21 symmetrical with respect to the axis, and the lower roll 3 also has two pressing surfaces 31 formed in the same manner. The two rolls 2 and 3 are configured to rotate synchronously so that the pressing surfaces 21 and 31 of the two rolls come into contact with each other via the sealed object 1. Further, as shown in FIG. 2B, the pressing surfaces 21 and 31 of the upper and lower rolls 2 and 3, respectively,
A plurality of mutually engaging grooves and protrusions are formed in the circumferential direction.

【００１１】そして、上下ロール２，３間に、図１及び
図２（ａ）に示すような、長尺状の被シール物１で且つ
その幅方向に厚み差又は坪量差を有する被シール物１
が、図１に示すように挿通され、両ロール間２，３を通
過する際に、両ロール２，３それぞれの押圧面２１，３
１の凹凸間に、被シール物１が噛み込まれ且つ加熱され
ることによって、該被シール物１を構成する上面シート
１１と下面シート１２との間が、被シール物１の幅方向
に亘ってシールされ、かかるシールが周期的に繰り返さ
れることによって、被シール物１に、複数のシール部１
３，１３・が間欠的に形成されるようになされている。As shown in FIG. 1 and FIG. 2 (a), between the upper and lower rolls 2, 3, a long sealed object 1 having a thickness difference or a basis weight difference in the width direction thereof. Thing 1
Is inserted as shown in FIG. 1, and when passing between the two rolls 2, 3, the pressing surfaces 21, 3 of the two rolls 2, 3 respectively.
The object to be sealed 1 is bitten and heated between the unevennesses 1 so that the space between the upper sheet 11 and the lower sheet 12 constituting the object to be sealed 1 extends in the width direction of the object to be sealed 1. And the seal is periodically repeated, whereby a plurality of seal portions 1
3, 13. Are formed intermittently.

【００１２】図１及び図２（ａ）に示す被シール物１
は、各シール部１３，１３・において切断され、図３に
示す形態の吸収性物品（生理用ナプキン）４を形成する
吸収性物品連続体である。被シール物１としての吸収性
物品連続体は、吸収性物品４の肌当接面を形成する前記
下面シート１２としての表面シートと、吸収性物品４の
非肌当接面を形成する前記上面シート１１としての裏面
シートと、これら表裏面シート（上下面シート１１，１
２）間に、吸収性物品連続体の長手方向に所定の間隔で
配されている吸収体４１と、吸収体４１の両側部に、両
側部それぞれを覆うように一対配された防漏シート１
４，１４とを有しており、所定の間隔で配された吸収体
同士間の吸収体の介在しない部分が、前記両押圧面２
１，３１によりシールされる被シール部〔断面を図２
（ａ）に示す〕となっている。そして、吸収性物品連続
体は、搬送方向の前部側に位置する被シール部から順に
各被シール部を順次シールされ、搬送方向の下流におい
て、シール部１３，１３・を順次切断されて個々の吸収
性物品（生理用ナプキン）４を生じる。An object 1 to be sealed shown in FIG. 1 and FIG.
Is an absorbent article continuum which is cut at each of the seal portions 13 to form the absorbent article (sanitary napkin) 4 in the form shown in FIG. The absorbent article continuum as the article to be sealed 1 includes the top sheet as the lower sheet 12 forming the skin contact surface of the absorbent article 4 and the upper surface forming the non-skin contact surface of the absorbent article 4. A back sheet as the sheet 11 and these front and back sheets (upper and lower sheets 11, 1)
2) In between, the absorber 41 arranged at a predetermined interval in the longitudinal direction of the continuous absorbent article, and a pair of leakproof sheets 1 arranged on both sides of the absorber 41 so as to cover both sides.
4 and 14, and the portion where the absorber is not interposed between the absorbers arranged at a predetermined interval is the two pressing surfaces 2
1 and 31 [section is shown in FIG.
(Shown in (a)). Then, in the absorbent article continuum, the respective sealed portions are sequentially sealed in order from the sealed portion located on the front side in the transport direction, and the seal portions 13, 13 are cut sequentially in the downstream in the transport direction and individually. Absorbent article (sanitary napkin) 4 is produced.

【００１３】この被シール物１としての吸収性物品連続
体は、被シール部における幅方向の断面が図２（ａ）に
示す構造を有しており、その幅方向に坪量差を有してい
る。具体的には、幅方向の両端部に、シートが５層に積
層された坪量最大の部分Ｅ、幅方向の中央部にシートが
２層に積層された坪量最小の部分Ｆ、これらの両部分
Ｅ，部分Ｆ間に、中間の坪量を有する部分Ｇを有してい
る。そして、坪量最大の部分Ｅと坪量最小の部分Ｆとの
坪量差は、３０〜１００ｇ／ｍ2 となっている。The absorbent article continuum as the article to be sealed 1 has a structure in which the cross section in the width direction of the section to be sealed has a structure shown in FIG. ing. Specifically, at both ends in the width direction, a portion E having the largest basis weight in which the sheets are laminated in five layers, and a portion F having the smallest basis weight in which the sheets are laminated in two layers in the center portion in the width direction. A portion G having an intermediate basis weight is provided between the two portions E and F. The basis weight difference between the portion E having the largest basis weight and the portion F having the smallest basis weight is 30 to 100 g / m 2 .

【００１４】本実施形態における上ロール２は、図２に
示すように、被シール物１の幅方向の坪量差に対応する
段差ｄを、該上ロール２の軸長方向に有している。即
ち、上ロール２の幅方向両側部２１ａ，２１ａにおける
溝部の直径は、上ロール２の幅方向中央部２１ｂの溝部
の直径よりも小さくなっており、該ロール２の押圧面２
１には、上ロール２の幅方向の両側部２１ａ，２１ａと
中央部２１ｂとの間に段差ｄが形成されている。一方、
下ロール３の押圧面３１には、段差は形成されていな
い。As shown in FIG. 2, the upper roll 2 in the present embodiment has a step d in the axial direction of the upper roll 2 corresponding to a difference in basis weight in the width direction of the object 1 to be sealed. . That is, the diameter of the groove in the width direction both side portions 21a of the upper roll 2 is smaller than the diameter of the groove in the width direction central portion 21b of the upper roll 2, and the pressing surface 2 of the roll 2
1, a step d is formed between both sides 21a, 21a in the width direction of the upper roll 2 and a center part 21b. on the other hand,
No step is formed on the pressing surface 31 of the lower roll 3.

【００１５】そして、被シール物１の高坪量部分Ｅ，Ｇ
が挿通される両ロール２，３間の隙間Ｃ１，Ｃ１が、該
被シール物１の低坪量部分Ｆが挿通される両ロール間
２，３の隙間Ｃ２より大きくなっている。尚、両ロール
間２，３の隙間とは、両ロール２，３の押圧面２１，３
１同士の接点に形成される隙間を意味する。また、段差
には、両押圧面２１，３１それぞれに形成された隣接す
る溝部と突部との間の高低差は含まれない。Then, the high basis weight portions E and G of the object to be sealed 1
The gaps C1 and C1 between the two rolls 2 and 3 through which are inserted are larger than the gap C2 between the two rolls 3 through which the low basis weight portion F of the sealed object 1 is inserted. The gap between the two rolls 2 and 3 means the pressing surfaces 21 and 3 of the two rolls 2 and 3.
It means a gap formed at the point of contact between one. In addition, the step does not include the height difference between the adjacent groove and the protrusion formed on each of the pressing surfaces 21 and 31.

【００１６】そして、本実施形態のシール装置に、図１
に示すように被シール物１を挿通することにより、該被
シール物１における上面シート１１と下面シート１２と
の間を確実にシールすることができる。FIG. 1 shows the structure of the sealing device of the present embodiment.
As shown in (1), by inserting the object to be sealed 1, the space between the upper sheet 11 and the lower sheet 12 in the object to be sealed 1 can be reliably sealed.

【００１７】本実施形態のシール装置及び該シール装置
を用いた本実施形態のシール方法によれば、上ロール２
が、被シール物１の幅方向に段差ｄを有しているため、
より具体的には、被シール物１の高坪量部分Ｅ，Ｇが挿
通される両ロール２，３間の隙間Ｃ１，Ｃ１が、該被シ
ール物１の低坪量部分Ｆが挿通される両ロール間２，３
の隙間Ｃ２より大きくなされているため、被シール物１
は、高坪量部分Ｅ，Ｇ及び低坪量部分Ｆの双方において
最適な加圧力を受け、総ての部分Ｅ，Ｆ，Ｇにおける上
下面シート間が確実にシールされる。また、シールに際
し、低坪量部分にシール性を向上させる特殊加工を施こ
す必要もない。このように、本発明によれば、幅方向に
厚み差や坪量差を有する被シール物のシールを、一度の
シール処理により確実に行うことができる。According to the sealing device of the present embodiment and the sealing method of the present embodiment using the sealing device, the upper roll 2
Has a step d in the width direction of the sealed object 1,
More specifically, the gaps C1 and C1 between the two rolls 2 and 3 through which the high basis weight portions E and G of the sealed object 1 are inserted, and the low basis weight portion F of the sealed object 1 are inserted. 2,3 between both rolls
Is larger than the gap C2 of the object 1 to be sealed.
Receives an optimum pressing force in both the high basis weight portions E and G and the low basis weight portion F, and the upper and lower sheets in all the portions E, F and G are reliably sealed. Further, at the time of sealing, it is not necessary to apply special processing for improving the sealing property to the low basis weight portion. As described above, according to the present invention, it is possible to reliably seal an object to be sealed having a thickness difference or a basis weight difference in the width direction by a single sealing process.

【００１８】上記段差ｄないし両ロール２，３間の隙間
は、被シール物１の高坪量部分Ｅ，Ｇと低坪量部分Ｆと
に均一な加圧力が加わるように設定することが好まし
い。また、両ロール２，３に形成される隙間は、その最
大部分の隙間Ｃ１と最小部分の隙間Ｃ２との間の差（本
形態においては段差ｄに同じ）が、０．０１〜０．１ｍ
ｍであることが好ましい。The step d or the gap between the two rolls 2 and 3 is preferably set so that a uniform pressing force is applied to the high basis weight portions E and G and the low basis weight portion F of the article 1 to be sealed. . The gap formed between the two rolls 2 and 3 has a difference between the maximum gap C1 and the minimum gap C2 (same as the step d in the present embodiment) of 0.01 to 0.1 m.
m is preferable.

【００１９】次に、本発明において、被シール物の上面
を形成する上面シート及び下面を形成する下面シートそ
れぞれの好ましい構成について説明する。両シートは、
何れも熱可塑性樹脂からなるものが好ましい。また、こ
の場合における熱可塑性樹脂は、上記両シートにおいて
何れも同じものが用いられていてもよく、或いは異なる
ものが用いられていてもよい。更に、１枚のシートが２
種以上の熱可塑性樹脂から構成されていてもよい。尚、
「熱可塑性樹脂からなる」とは、熱可塑性樹脂１００％
から形成されている場合と、熱可塑性樹脂を主成分と
し、且つシートの接合性を損なわない程度の量の他成分
（例えばコットン、レーヨン等）を含む場合との双方を
意味する。Next, preferred configurations of the upper sheet forming the upper surface of the object to be sealed and the lower sheet forming the lower surface in the present invention will be described. Both seats
Both are preferably made of a thermoplastic resin. In this case, the same thermoplastic resin may be used for both sheets, or different thermoplastic resins may be used for both sheets. Furthermore, one sheet is 2
It may be composed of more than one kind of thermoplastic resin. still,
"Consisting of thermoplastic resin" means 100% thermoplastic resin
And the case where the main component is a thermoplastic resin and contains other components (for example, cotton, rayon, etc.) in an amount not to impair the bonding property of the sheet.

【００２０】上記熱可塑性樹脂の種類に特に制限はな
く、例えばポリオレフィン系樹脂、ポリエステル系樹
脂、ポリアミド系樹脂、ビニル系樹脂、（メタ）アクリ
ル系樹脂等を用いることができるが、これらの樹脂の中
でも弾性率が低いポリオレフィン系樹脂を用いることが
接合性の点から好ましい。上記ポリオレフィン系樹脂と
しては、ポリエチレン及び／又はポリプロピレンが好ま
しく用いられる。尚、本明細書において「ポリエチレ
ン」、「ポリプロピレン」とは、それぞれエチレン、プ
ロピレンのホモポリマー、及び共重合モノマーの主成分
がエチレン、プロピレンであるコポリマーの双方を意味
する。The type of the thermoplastic resin is not particularly limited. For example, a polyolefin resin, a polyester resin, a polyamide resin, a vinyl resin, a (meth) acrylic resin and the like can be used. Among them, it is preferable to use a polyolefin-based resin having a low elastic modulus from the viewpoint of the joining property. As the polyolefin resin, polyethylene and / or polypropylene are preferably used. In this specification, “polyethylene” and “polypropylene” mean both a homopolymer of ethylene and propylene and a copolymer in which the main components of the copolymerized monomer are ethylene and propylene, respectively.

【００２１】上記シートとしては、不織布又はフィルム
等の形態のものが好ましく用いられる。この場合、上記
シートの何れもが不織布又はフィルムであってもよく、
或いは上記シートのうちの少なくとも１枚が不織布であ
り、残りがフィルムであってもよい。特に、上記シート
がポリエチレン及び／又はポリプロピレンからなる不織
布又はフィルムであることがシートの接合性の点から好
ましい。The sheet is preferably in the form of a nonwoven fabric or a film. In this case, any of the above sheets may be a nonwoven fabric or a film,
Alternatively, at least one of the sheets may be a nonwoven fabric and the rest may be a film. In particular, it is preferable that the sheet is a nonwoven fabric or a film made of polyethylene and / or polypropylene from the viewpoint of the bonding property of the sheet.

【００２２】上記不織布を構成する繊維としては、長繊
維の連続フィラメントや短繊維のステープルファイバー
等をシートの用途等に応じて適宜選択して用いることが
できる。これらの繊維の繊度も、シートの用途等に応じ
て適宜選択されるが、シートのシール性の点から１．５
〜３．５デニールであることが好ましく、２．０〜３．
０デニールであることが更に好ましい。As the fibers constituting the nonwoven fabric, continuous filaments of long fibers and staple fibers of short fibers can be appropriately selected and used according to the use of the sheet. The fineness of these fibers is also appropriately selected according to the use of the sheet and the like.
To 3.5 denier, preferably from 2.0 to 3.5 denier.
More preferably, it is 0 denier.

【００２３】上記繊維の具体例としては、ポリエチレン
繊維、ポリプロピレン繊維、ポリプロピレン／ポリエチ
レンの芯鞘複合繊維やサイド・バイ・サイド型複合繊維
等が好ましく挙げられる。Preferred examples of the above fibers include polyethylene fibers, polypropylene fibers, core / sheath composite fibers of polypropylene / polyethylene, and side-by-side type composite fibers.

【００２４】被シール部における上面シートと下面シー
トと間に介在する他のシートは、熱可塑性樹脂からなる
ものでも、それ以外のものでも良いが、熱可塑性樹脂か
らなるものが好ましい。尚、上記防漏シート１４，１４
としては、ポリエチレンフィルム、ポリエチレンラミネ
ート紙からなるものが好ましく、特にポリエチレンフィ
ルムが好ましい。The other sheet interposed between the upper sheet and the lower sheet in the portion to be sealed may be made of a thermoplastic resin or other materials, but is preferably made of a thermoplastic resin. The leak-proof sheets 14, 14
Is preferably made of a polyethylene film or polyethylene laminated paper, and particularly preferably a polyethylene film.

【００２５】本発明のシール方法及びシール装置は、使
い捨ておむつや生理用ナプキン等の吸収性物品の製造工
程における、液透過性の表面シートと液不透過性の裏面
シートとの間のシールに有用であるが、本発明における
被シール物は、少なくとも２枚のシートからなる被シー
ル物における上面を形成する上面シートと下面を形成す
る下面シートとの間をシールし得るものであれば特に制
限されない。尚、上下面シート間のシールは、両シート
間に他の部材を介在させた状態で行っても良い。The sealing method and the sealing device of the present invention are useful for sealing between a liquid-permeable top sheet and a liquid-impermeable back sheet in the process of manufacturing absorbent articles such as disposable diapers and sanitary napkins. However, the object to be sealed in the present invention is not particularly limited as long as it can seal between the upper surface sheet forming the upper surface and the lower surface sheet forming the lower surface in the object to be sealed including at least two sheets. . The sealing between the upper and lower sheets may be performed with another member interposed between the two sheets.

【００２６】また、段差は二以上あっても良い。また、
下ロール３が段差を有していても良く、両ロール２，３
が共に段差を有していても良い。段差は、高い部分と低
い部分との境界が傾斜面であっても良く、「ロールが段
差を有している」という場合、そのロールが軸長方向の
両端部等、ロールの一部にテーパ面を有する場合や、そ
のロールが軸長方向に並列された直径の異なる複数部材
からなる場合も含む。また、押圧面２１，３１及び対応
するシール部の形状は、図１に示すように両側縁が凹状
で中央部の幅狭部を有する形状に限られず、矩形状、円
形、菱形等任意の組み合わせでも良い。また、シール部
を、被シール物の長手方向に連続して形成するようにし
ても良い。また、被シール物は、その幅方向に厚み差、
又は厚み差及び坪量差を有するものでも良い。また、押
圧面２１，３１のエンボス用の凹凸は、従来公知の各種
の形態のものを採用し得る。また、上下面シートの上下
は便宜上のもので、使用時における上下は逆でも良い。The number of steps may be two or more. Also,
The lower roll 3 may have a step.
May have a step. As for the step, the boundary between the high part and the low part may be an inclined surface, and when "the roll has a step", the roll is tapered to a part of the roll, such as both ends in the axial direction. This includes cases where the roll has a surface, and cases where the rolls are composed of a plurality of members having different diameters arranged in parallel in the axial direction. In addition, the shapes of the pressing surfaces 21 and 31 and the corresponding seal portions are not limited to the shapes having the concave sides on both sides and the narrow portion at the center as shown in FIG. But it is good. Further, the seal portion may be formed continuously in the longitudinal direction of the object to be sealed. The object to be sealed has a thickness difference in the width direction,
Alternatively, those having a thickness difference and a basis weight difference may be used. In addition, as the embossing irregularities of the pressing surfaces 21 and 31, various conventionally known forms can be adopted. In addition, the upper and lower sides of the upper and lower sheets are for convenience, and the upper and lower sides in use may be reversed.

【００２７】[0027]

【発明の効果】本発明によれば、被シール物が、被シー
ル部に厚み差や坪量差を有する場合であっても、一対の
ロールを用いて、被シール部の全体を確実にシールでき
る、シール方法及びシール装置を提供することができ
る。According to the present invention, even when the object to be sealed has a difference in thickness or basis weight between the parts to be sealed, the whole part to be sealed is securely sealed using a pair of rolls. A sealing method and a sealing device that can be provided.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本実施形態に係るシール装置の一部を模式的に
示す斜視図である。FIG. 1 is a perspective view schematically showing a part of a sealing device according to an embodiment.

【図２】図１の要部拡大図であり、上下ロールの接点に
おける断面を示す図である。尚、図２（ａ）は、上下ロ
ール間の隙間を拡げて示し、且つ被シール物の厚みを誇
張して示してある。また、図２（ｂ）は、被シール物の
図示を省略してある。FIG. 2 is an enlarged view of a main part of FIG. 1, showing a cross section of a contact point between upper and lower rolls. FIG. 2A shows the gap between the upper and lower rolls in an enlarged manner, and the thickness of the object to be sealed is exaggerated. FIG. 2B omits illustration of the object to be sealed.

【図３】本発明の方法及び装置により得られる吸収性物
品の例を示す斜視図である。FIG. 3 is a perspective view showing an example of an absorbent article obtained by the method and the apparatus of the present invention.

【符号の説明】[Explanation of symbols]

１ 被シール物 １１ 上面シート １２ 下面シート １３ シール部 １４ 他のシート（防漏シート） ２ 上ロール ２１ 押圧面 ３ 下ロール ３１ 押圧面 ４ 吸収性物品（生理用ナプキン） DESCRIPTION OF SYMBOLS 1 Sealed object 11 Top sheet 12 Bottom sheet 13 Seal part 14 Other sheet (leakage prevention sheet) 2 Upper roll 21 Pressing surface 3 Lower roll 31 Pressing surface 4 Absorbent article (sanitary napkin)

───────────────────────────────────────────────────── フロントページの続き (72)発明者 寺谷 弘 栃木県芳賀郡市貝町赤羽2606 花王株式会 社研究所内 Ｆターム(参考） 3B029 BB05 BB07 BC07 BD17 BF03 4C098 AA09 CC14 CC40 DD10 4F211 AD08 AG01 AG03 SA07 SD01 SD17 SP05 SP09 TA13 TC03 TN09 TQ03 TQ06  ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Teratani 2606 Kagane-cho, Haga-gun, Tochigi Pref. SD17 SP05 SP09 TA13 TC03 TN09 TQ03 TQ06

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 少なくとも二枚のシートからなる長尺状
の被シール物で且つその幅方向に厚み差又は坪量差を有
する被シール物を、一対のロール間に挿通し、該被シー
ル物を構成する上面シートと下面シートとの間をシール
するシール方法であって、 少なくとも一方の前記ロールは、該ロールの軸長方向
に、前記厚み差又は前記坪量差に対応する段差を有して
いるシール方法。An object to be sealed, which is a long object to be sealed made of at least two sheets and has a thickness difference or a basis weight difference in a width direction thereof, is inserted between a pair of rolls. A seal method for sealing between an upper sheet and a lower sheet constituting: wherein at least one of the rolls has a step corresponding to the thickness difference or the basis weight difference in an axial direction of the roll. Have sealing method. 【請求項２】 相対向する一対のロールを備えており、
両ロール間に、少なくとも二枚のシートからなる長尺状
の被シール物で且つその幅方向に厚み差又は坪量差を有
する被シール物が挿通され、該被シール物を構成する上
面シートと下面シートとの間がシールされるようになさ
れているシール装置であって、 前記被シール物の肉厚部分又は高坪量部分が挿通される
両ロール間の隙間が、該被シール物の肉薄部分又は低坪
量部分が挿通される両ロール間の隙間より大きくなされ
ているシール装置。2. It has a pair of rolls facing each other,
Between the two rolls, an elongated object to be sealed consisting of at least two sheets and an object to be sealed having a thickness difference or a basis weight difference in the width direction thereof are inserted, and a top sheet constituting the object to be sealed. A seal device configured to be sealed between a lower sheet and a lower sheet, wherein a gap between both rolls through which a thick portion or a high basis weight portion of the sealed object is inserted is thinned. The sealing device is formed to be larger than the gap between the two rolls through which the portion or the low basis weight portion is inserted. 【請求項３】 少なくとも一方の前記ロールは、外周面
が窪んで形成され前記被シール物に接触しない非接触部
を、該ロールの幅方向に亘って有しており、該被シール
物を構成する上面シートと裏面シートとの間が間欠的に
シールされるようになされている請求項２記載のシール
装置。3. At least one of the rolls has a non-contact portion formed in the outer peripheral surface of the roll so as to be depressed and not in contact with the object to be sealed, in the width direction of the roll, and constitutes the object to be sealed. 3. The sealing device according to claim 2, wherein a gap between the upper sheet and the back sheet is intermittently sealed. 【請求項４】 少なくとも一方の前記ロールが、加熱手
段を備えている請求項２又は３記載のシール装置。4. The sealing device according to claim 2, wherein at least one of the rolls includes a heating unit.
JP18808599A 1999-07-01 1999-07-01 SEALING METHOD AND SEALING DEVICE Expired - Fee Related JP3693856B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18808599A JP3693856B2 (en) 1999-07-01 1999-07-01 SEALING METHOD AND SEALING DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18808599A JP3693856B2 (en) 1999-07-01 1999-07-01 SEALING METHOD AND SEALING DEVICE

Publications (2)

Publication Number Publication Date
JP2001009915A true JP2001009915A (en) 2001-01-16
JP3693856B2 JP3693856B2 (en) 2005-09-14

Family

ID=16217450

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP3693856B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010084980A1 (en) * 2009-01-26 2010-07-29 ユニ・チャーム株式会社 Device for producing absorbent articles, method for producing absorbent articles, and absorbent article
JP2012125945A (en) * 2010-12-13 2012-07-05 Kao Corp Sealing device, sealing method and underpants type disposable diaper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010084980A1 (en) * 2009-01-26 2010-07-29 ユニ・チャーム株式会社 Device for producing absorbent articles, method for producing absorbent articles, and absorbent article
JP2012125945A (en) * 2010-12-13 2012-07-05 Kao Corp Sealing device, sealing method and underpants type disposable diaper

Also Published As

Publication number Publication date
JP3693856B2 (en) 2005-09-14

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