CN101746057A - Sheet material processing method and device - Google Patents

Sheet material processing method and device Download PDF

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Publication number
CN101746057A
CN101746057A CN200910246796A CN200910246796A CN101746057A CN 101746057 A CN101746057 A CN 101746057A CN 200910246796 A CN200910246796 A CN 200910246796A CN 200910246796 A CN200910246796 A CN 200910246796A CN 101746057 A CN101746057 A CN 101746057A
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CN
China
Prior art keywords
roller
sheet material
temperature
heating region
heating
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Granted
Application number
CN200910246796A
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Chinese (zh)
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CN101746057B (en
Inventor
小林贤司
安藤贤治
梁岛拓郎
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Kao Corp
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Kao Corp
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Publication of CN101746057A publication Critical patent/CN101746057A/en
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Publication of CN101746057B publication Critical patent/CN101746057B/en
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    • 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
    • B29C65/02—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
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • 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
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/347—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3472—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients in the plane of the joint, e.g. along the joint line in the plane of the joint or perpendicular to the joint line in the plane of the joint
    • 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
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81469—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed next to the other in a single line transverse to the feed direction, e.g. shoulder to shoulder sonotrodes
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B29C66/91423—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools using joining tools having different temperature zones or using several joining tools with different temperatures
    • 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
    • B29C66/80—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
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • 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
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • 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
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention provides a sheet material processing method and device. The sheet material processing method is used for processing the sheet material (100 between two rollers (7A, 8) which are arranged oppositely, wherein, the processing method includes at least one of the compacting of the sheet material, the heat seal of sheet materials and the cut off of an elastomeric element arranged among the sheet materials, in the processing method, the outer periphery temperature of at least one roller (8) is respectively controlled in a plurality of thermal treatment zones arranged in the shaft direction of the roller, while the sheet materials (100) are processed.

Description

The processing method of sheet material and processing unit (plant)
Technical field
The present invention relates to the processing method and the processing unit (plant) of sheet material.
Background technology
In the past, when amenities such as manufacturing disposable diaper and sanitary napkin, the hot-rollings that use in the cut-out of (sealing) joint, sheet material or elastomeric element between 2 sheet materials more, still, if the surface temperature of hot-rolling is inhomogeneous, then be difficult to carry out stable joint or cut-out.
As the uniform technology of the surface temperature that makes hot-rolling, put down in writing following content in the TOHKEMY 2006-185696 communique (hereinafter referred to as patent documentation 1): consider the heat that distributes from the axial end of roller, the caloric value that makes the heater that is configured in close end is greater than the heater that is configured in central portion.
But, in recent years, need the situation of high accuracy processing a lot, as the technology of patent documentation 1, only can not fully satisfy such requirement at the big heater of central portion configuration caloric value.For example, because the heat radiation in roller when rotation, the heat that distributes to the sheet material that contact with this roller from roller, the variation of the conditioned disjunction environment the when heat radiation etc. of roller and sealing or cut-out in opposite directions, the surface temperature of roller can change, only at the big heater of central portion configuration caloric value, be subjected to the influence of this minor variations sometimes, thereby can't carry out high-precision sealing or cut-out.
Summary of the invention
Therefore, the invention provides and a kind ofly can stably carry out sheet material processing method with high accuracy to the various processing of sheet material.
In addition, the invention provides a kind of sheet material processing unit (plant) that can stably carry out the cut-out processing of heat seal processing and/or elastomeric element with high accuracy.
The present invention relates to a kind of material processing method, it is the sheet material processing method of between 2 rollers of configuration in opposite directions sheet material being processed, wherein, at least a processing in the cut-out of the elastomeric element that the described processing that described sheet material is carried out is the compacting of sheet material, dispose between the heat seal between sheet material and sheet material, in the described processing method, one side will be controlled in a plurality of heating regions of temperature on being arranged in the direction of principal axis of this roller of the peripheral part of at least one roller respectively, on one side above-mentioned sheet material is carried out above-mentioned processing.
In addition, the present invention relates to a kind of sheet material processing unit (plant), it is the sheet material processing unit (plant) that carries out the heat seal between sheet material and/or be configured in the cut-out of the elastomeric element between sheet material between 2 rollers of configuration in opposite directions, wherein, at least in a roller, have temperature sensor in each heating region of a plurality of heating regions on being arranged in the direction of principal axis of this roller,, can in each heating region, control the temperature of the peripheral part of this roller according to the information that each described temperature sensor sends.
According to of the present invention material processing method, can stably carry out various processing with high accuracy to sheet material.
According to sheet material processing unit (plant) of the present invention, can stably carry out the cut-out processing of heat seal processing and/or elastomeric element with high accuracy.
Description of drawings
Fig. 1 uses the sheet material processing unit (plant) of the 1st embodiment of the present invention for expression and carries out the figure of the situation of 2 heat seal processing between sheet material.
Fig. 2 uses the sheet material processing unit (plant) of the 1st embodiment and the stereogram of the pull-on disposable diaper that processing method formation side seal portion makes for expression.
Fig. 3 is shown schematically in the production line of pull-on disposable diaper forming the sealing process of side seal portion on the diaper non-individual body and this diaper non-individual body is run through the figure that width cuts into the cut-out operation of each diaper between adjacent side seal portion.
Fig. 4 be in the device of presentation graphs 1 the 1st sealed roller and anvil roller sealing block separately at constructed profile perpendicular to the section on the roll axial direction.
Fig. 5 for the 1st sealed roller in the device of presentation graphs 1 and anvil roller sealing block separately at the constructed profile that is parallel to the section on the roll axial direction.
Fig. 6 is the schematic diagram of the section of the part of the enforcement heat seal processing of expression diaper non-individual body.
Fig. 7 uses the sheet material processing unit (plant) of the 2nd embodiment of the present invention for expression and cuts off the figure of the situation that is arranged on 2 elastomeric elements between sheet material.
Fig. 8 is the pattern roller in the device of presentation graphs 7 and the stereogram of anvil roller.
Fig. 9 is the pattern roller shown in Figure 8 and the profile axially of anvil roller.
Figure 10 (a) and Figure 10 (b) are separated into the vertical view that housing material and absorbent main body are represented with diaper shown in Figure 2, and Figure 10 (a) is the figure of the housing material of expression deployed condition, and Figure 10 (b) is the figure that shows after the absorbent main body partial destruction.
Figure 11 is for being the concept map at center with the operation after the manufacturing of housing material non-individual body in the manufacture method of pull-on disposable diaper shown in Figure 2.
Figure 12 can be used as the sealing block of other form that the 1st sealed roller in the device of Fig. 1 and anvil roller sealing block separately use at the constructed profile that is parallel to the section on the roll axial direction for expression.
The specific embodiment
Below, based on preferred embodiment with reference to description of drawings the present invention.
The sheet material processing method and the processing unit (plant) of the 1st embodiment of the present invention at first, are described.
As shown in Figure 1, the sheet material processing unit (plant) of the 1st embodiment of the present invention is for possessing the 1st～the 3rd sealed roller 7A～7C, apparatus for heat sealing 1 with the anvil roller 8 that disposes in opposite directions with these sealed rollers 7A～7C, it constitutes: by to 2 sheet material A1, the 1st sealing processing that B1 carries out successively heating between the 1st sealed roller 7A and anvil roller 8 and pressurizes, the 2nd sealing processing of between the 2nd sealed roller 7B and anvil roller 8, heating and pressurizeing, and the 3rd sealing processing of between the 3rd sealed roller 7C and anvil roller 8, heating and pressurizeing, thereby with 2 sheet material A1, be joined together by heat seal between the B1.
The heat seal processing of carrying out with the apparatus for heat sealing 1 of present embodiment is following processing: making continuously in the production line of pull-on disposable diaper 10 shown in Figure 2, the diaper non-individual body 100 that this diaper 10 constitutes on width is continuously implemented heat seals processing.The following processing of more specifically saying so: as shown in Figure 3, engage by heat seal (heat fusing is bonding) forming the laminated sheet A1 of the diaper veutro A of portion in the diaper non-individual body 100 and forming between the laminated sheet B1 of diaper drosal part B, thus the side seal portion 4,4 of formation diaper 10.Like this, the heat seal between 2 sheet materials of the present invention also comprises 1 continuous sheet material is folding and situation that engage between in opposite directions 2 sheet material A1, the B1 that form.In addition, thermosealed 2 sheet material A1, B1 can be respectively the sheet material of single layer structure, also can be respectively the sheet materials of sandwich construction.
The the 1st～the 3rd sealed roller 7A～7C and anvil roller 8 in the apparatus for heat sealing 1 are driven in rotation along the direction shown in the arrow P among Fig. 1 respectively.Under this state, transport means 11 by known belt, diaper non-individual body 100 is directed on the anvil roller 8 continuously, to the diaper non-individual body 100 that is transported along with the rotation of anvil roller 8, implement the 1st sealing processing that utilizes the 1st sealed roller 7A to carry out, the 2nd the 3rd sealing processing that seals processing and utilize the 3rd sealed roller 7C to carry out that utilizes the 2nd sealed roller 7B to carry out successively.The the 1st～the 3rd sealing processing is that the same position to diaper non-individual body 100 applies repeatedly.
By these sealing processing, on diaper non-individual body 100, form side seal portion 4,4.Afterwards, the diaper non-individual body 100 after separating from anvil roller 8 is applied cut-out processing, promptly between adjacent side seal portion 4,4, run through width and cut off.
Be divided into 3 stages and carry out by sealing processing, can prevent from sheet material A1, the B1 of machined material are caused damage, and can apply heat, seal reliably the bonding interface of sheet material A1, B1.In addition, the 1st～the 3rd sealing processing can be carried out under uniform temp, but from same viewpoint, is more preferably at gradually and carries out under the cooling.
As shown in Figure 1, on the 1st～the 3rd sealed roller 7A～7C and anvil roller 8, be separately installed with sealing block 70,80.On the position of each comfortable roller Zhou Fangxiang 2 five equilibrium of the 1st～the 3rd sealed roller 7A～7C 2 sealing blocks 70 are housed, anvil roller 8 is equipped with 6 sealing blocks 80 altogether on the position of roller Zhou Fangxiang 6 five equilibriums.Each sealing block 70,80 has elongate in shape on the axial length direction of each roller.
As shown in Figure 4, the front end edge roll axial direction at sealing block 70 has formed 2 convex strip portions 70a, 70b.In addition, the front end at sealing block 80 has also formed 2 convex strip portions 80a, 80b along roll axial direction.Convex strip portions 70a, the 70b of sealing block 70 and convex strip portions 80a, the 80b of sealing block 80 are along with roller 7A～7C, 8 rotation, as shown in Figure 4 periodically in opposite directions, carrying out sealed material heating and pressurization between convex strip portions 70a and the convex strip portions 80a and between convex strip portions 70b and the convex strip portions 80b.
The apparatus for heat sealing 1 of present embodiment can be on one side with control respectively in each zone of a plurality of heating region 7D on being arranged in the direction of principal axis of this each roller of the temperature of the 1st～the 3rd sealed roller 7A～7C peripheral part separately, 7E, 7F, on one side 2 sheet material A1, B1 are implemented heat seals processing.In addition, the apparatus for heat sealing 1 of present embodiment can be on one side with control respectively in each zone of a plurality of heating region 8D on the direction of principal axis that is arranged in this roller 8 of the temperature of the peripheral part of anvil roller 8,8E, 8F, on one side 2 sheet material A1, B1 are implemented heat seals processing.
As shown in Figure 4 and Figure 5, on the sealing block 70,80 each self assembly cartridge heater 91 and temperature sensor (temperature sensing means) 96～98.
Heating region 7D, 7E, 7F are set at the zone that can control temperature by cartridge heater 91 respectively, and heating region 8D, 8E, 8F are set at the zone that can control temperature by cartridge heater 91 respectively.
In the present embodiment, as shown in Figure 3, the heating region 7D of sealed roller 7A～7C and the heating region 8D of anvil roller 8 are set to and can the central portion of the width (roll axial direction) of the part of the enforcement heat seal of diaper non-individual body 100 processing be heated and pressurize, the heating region 7E of sealed roller 7A～7C and the heating region 8E of anvil roller 8 are set to and can heat and pressurize an end of the width (roll axial direction) of the part of the enforcement heat seal of diaper non-individual body 100 processing, and another end that the heating region 7F of sealed roller 7A～7C and the heating region 8F of anvil roller 8 are set to the width (roll axial direction) of the part that can process the enforcement heat seal of diaper non-individual body 100 is heated and pressurizeed.
As shown in Figure 5, heating region 7D and heating region 8D, heating region 7E and heating region 8E, heating region 7F and heating region 8F are set on the same position on the direction of principal axis of roller.In addition, as shown in Figure 6, heating region 7E, heating region 8E are at the heat seal of implementing on the allocation position of the waist elastic members 33 of diaper non-individual body 100 between sheet material A1, B1, and heating region 7F, heating region 8F are at the heat seal of implementing on the allocation position of the leg elastic members 35 of diaper non-individual body 100 between this sheet material A1, B1.
In the present embodiment, heating region 7D and 8D are central heating region, and heating region 7E, 7F, 8E and 8F are the sidepiece heating region.
In the present embodiment, as shown in Figure 1, by make diaper non-individual body 100 volume on the anvil roller 8 hang 10 degree with on transport (rolling more than the angle θ 1=10 degree), can be on basis with above-mentioned 2 sheet material A1 of diaper non-individual body 100, B1 preheating, by pressurization between sealing block 70,80, improve the hot-melt-bondable between the sheet material when forming side seal portion 4.And anvil roller 8 is heated by integral body by heating region 8D, 8E, 8F.The processing object sheet material is rolled up the angle θ 1 that rolls that hangs when transporting on roller for example can be 10～300 degree, is preferably 35～225 degree.But, if 2 sheet materials (being sheet material A1, B1 in the present embodiment) increase with respect to the angle θ 1 that rolls of anvil roller 8, thereby the temperature that then has roller 8 is captured the trend of the easy reduction of temperature of the temperature of this roller 8 of heat, the particularly central portion of axial length direction easily by the sheet material that contacted temperature is lower with it.
In the apparatus for heat sealing 1 of present embodiment, in order to eliminate such unfavorable condition, the peripheral part temperature in the axial direction that is made into the 1st～the 3rd sealed roller 7A～7C and anvil roller 8 can control respectively in heating region 7D, 8D and heating region 7E, 8E and heating region 7F, 8F.Below carry out specific description more.
On the sealing block 70,80 in the present embodiment, extend with the direction of principal axis of roller and to form heater fixing with hole 92, cartridge heater 91 is inserted into and is fixed on that these are fixing with in holes 92 with paralleling.
As cartridge heater 91, can use in stable on heating pipe (for example heat-resistance stainless steel pipe), to have heating wire (nichrome wire etc.) and landfill has the material (MgO etc.) of thermal conductivity and insulating properties excellence in the gap of this heating line and pipe heater etc.
The cartridge heater 91 that uses in the present embodiment has the bigger big heating portion 93 of watt density at the central portion of its length direction as shown in Figure 5, has caloric value less than the little heating of 2 of big heating portion 93 portion 94,95 before and after it.
Cartridge heater 91 is fixed on the sealing block 70,80, so that heating portion 93 is arranged in heating region 7D, 8D greatly, makes little heating portion 94,95 lay respectively at the part that is configured in heating region 7E, 8E and is configured in the part of heating region 7F, 8F.
Watt density is meant the caloric value W/cm of per unit area on the cartridge heater direction of principal axis 2(heater capacity w/ (heater diameter cm * heater length cm)).In the present embodiment in the little heating of the big heating portion 93 of the cartridge heater 91 of Shi Yonging and 2 portion 94,95, heating wire is hidden in wherein to be wound into spiral helicine state respectively, big heating portion 93 is different with the winding number of the heating line of 2 unit lengths of little heating portion 94,95 on the direction of principal axis of cartridge type heating element 91, therefore, heating portion 93 is different with the watt density of the above-mentioned per unit area of 2 little heating portions 94,95 greatly.
Also can have in 1 cartridge type heating element and can regulate the structure of temperature dividually.
In addition, on sealing block 70,80, be provided with temperature sensor 96,97,98, described temperature sensor can be in heating region 7D, 8D and heating region 7E, 8E and heating region 7F, 8F the temperature on the roll axial direction of measuring roll 7A～7C, 8 peripheral part respectively.Each temperature sensor is provided on the radial direction of roller than cartridge heater 91 more near the surface of roller.As temperature sensor, can use various known sensors, for example can use thermocouple etc.
The big heating portion 93 of each cartridge heater and little heating portion 94,95 and temperature sensor 96～98 are connected by the known outer control device of means and roller that is connected such as flexible cord in the axial region that is configured in roller (cord) or rotary connector.
In the present embodiment, so configuration cartridge heater 91 and temperature sensor 96～98 on each roller 7A～7C, 8 peripheral part separately, thereby with control respectively in a plurality of heating regions of temperature on being arranged in direction of principal axis of the peripheral part of each roller.
Control device is all not shown, and it is made up of storage part, calculation portion, display setting portion, efferent (interface portion) etc.
When the sheet material processing unit (plant) of present embodiment turns round, according to the information that obtains from temperature sensor 96,97,98, each heating region 8D～8F of each heating region 7D～7F of the 1st～the 3rd sealed roller 7A～7C and anvil roller 8 separately in the roller peripheral part temperature and show by display setting portion over time, be stored in the storage part simultaneously.The design temperature separately of each heating region 7D～7F and 8D～8F is imported from display setting portion, and is stored in the storage part.
In operation process, calculation portion is at each heating region 7D～7F and 8D～8F, relatively it is stored in the design temperature in the storage part and the actual temperature of corresponding each one, when setting value is higher than actual value, can send instruction to improve actual temperature to efferent, when setting value is lower than actual value, can send instruction to reduce actual temperature (for example stopping the heating of heater) to efferent, when setting value is consistent with actual value (difference is when setting is following), can send instruction to keep actual temperature to efferent.Except electric current and/or voltage or changing, also can be digital information etc. to instruction that efferent sends.Efferent is according to the content of instruction, to the big heating portion of cartridge heater and/or little heating portion's power supply or stop power supply or increase and decrease the curtage of the electric power of supplying with, thereby keeps its state.Also can be according to the historical data of control of the temperature in past and variations in temperature at that time etc., the PREDICTIVE CONTROL of carrying out before reaching design temperature, just stopping power supply etc.
At the sheet material processing unit (plant) of the 1st embodiment and use in its sheet material processing method, so according to the information of sending from temperature sensor, with the control respectively in each heating region 7D～7F and 8D～8F of the temperature on the roll axial direction of the peripheral part separately of the 1st～the 3rd sealed roller 7A～7C and anvil roller 8, meanwhile be used to form the heat seal processing of side seal portion 4.
Therefore, can prevent unplanned temperature inequality of generation on the 1st～the 3rd sealed roller 7A～7C and/or anvil roller 8, the side seal portion 4 that peel strength etc. obtains high accuracy control can be on diaper non-individual body 100, stably formed, and then the pull-on disposable diaper of high-quality and uniform quality can be stablized, produce continuously.
In the present embodiment, reach the constant set temperature that each roller is set respectively, each heating region 7D～7F is carried out temperature control respectively in order to make the 1st～the 3rd sealed roller 7A～7C.In addition, in the present embodiment,, also be each heating region 8D～8F to be carried out temperature control respectively in order to reach its constant set temperature for anvil roller 8.By control respectively, though draw heat person difference on each heating region, also can be effectively with the temperature maintenance of each heating region 7D～7F, 8D～8F constant.An example enumerating the design temperature of each roller is: the design temperature of the 1st sealed roller 7A is 170 ℃, and the design temperature of the 2nd sealed roller 7B is 170 ℃, and the design temperature of the 3rd sealed roller is 150 ℃, and the design temperature of anvil roller 8 is 180 ℃.
On diaper non-individual body 100, when the side among the sheet material A1, the B1 that implement the heat seal processing part or both sides have different a plurality of regional 12,13,14 time of the stacked number of sheet material as shown in Figure 6 on the direction of principal axis at roller, also can set heating region, the zone that stacked number is many is heated with the temperature that is higher than the few zone of stacked number corresponding to each zone 12～14.Thus, can obtain the bond strength of expectation at whole sealing.In example shown in Figure 6, the stacked number of the sheet material in zone 12～14 is followed successively by 3,3,2, preferably zone 12 and zone 13 is heated with the temperature that is higher than zone 14.
Below, the sheet material processing method and the processing unit (plant) of the 2nd embodiment of the present invention are described.
The sheet material processing unit (plant) of the 2nd embodiment of the present invention is a shearing device 1 ', as Fig. 7～shown in Figure 9, the anvil roller 8 ' that this device possesses pattern roller 7 and disposes in opposite directions with this pattern roller 7 imports to the cut-out of the elastomeric element 34～36 between 2 sheet materials 31,32 between the protuberance of pattern roller 7 and anvil roller 8 '.In the sheet material processing method of the 2nd embodiment of the present invention, use shearing device 1 ', between the protuberance of pattern roller 7 and anvil roller 8 ', import to the cut-out of the elastomeric element 34～36 in 2 sheet materials 31,32.
Represented to use the situation of shearing device 1 ' (sheet material processing unit (plant)) manufacturing of the 2nd embodiment of the present invention among Fig. 7 as the housing material non-individual body 3 ' of housing material 3 uses of pull-on disposable diaper shown in Figure 2 10.
As shown in figure 10, pull-on disposable diaper 10 shown in Figure 2 possesses absorbent main body 2 and the housing material of fixing this main body 23 that is positioned at the non-skin contact surface side of absorbent main body 2.Diaper 10 has when dressing the A of veutro portion at the wearer veutro, at the drosal part B of wearer dorsal part and be configured in the C of crotch portion between them, the dual-side portion of A of veutro portion and drosal part B is engaged with each other, and forms a pair of side seal portion 4, waist peristome 5 and pair of leg peristome 6,6.
Shown in Figure 10 (b), absorbent main body 2 has the back-sheet 22 of face sheet 21, liquid impermeability or water proofing property of liquid permeability and the absorbent core 23 that is configured in the liquid retainability between two sheet materials 21,22, and the face of back-sheet 22 sides of absorbent main body 2 (non-skin contact surface side) is fixed on the housing material 3.In Figure 10 absorbent main body in the diaper 10 2 and housing material 3 are illustrated discretely, the part of symbol 2 ' expression is the position of configuration absorbent main body 2 among Figure 10 (a).On the length direction both sides of absorbent main body 2, be provided with liquid repellence or water proofing property and the side flange 24 that constitutes by poromeric material.Side flange 24 contains elastomeric element 24a, and the contraction by elastomeric element 24a forms three-dimensional rivel.As absorbent core 23, the material that for example can use particle by fibrous material such as paper pulp fiber and superabsorbent polymer to constitute and be coated by thin paper (not shown).
Housing material 3 in the diaper 10 possesses elastomeric element 33,34,35 and 36 between outer layer sheet 31 and internal layer sheet material 32.
Housing material 3 has respectively on the A of veutro portion of diaper 10 and drosal part B along the waist elastic members 33 and the waist portion elastomeric element 34 of width configuration separately.In addition, housing material 3 has the 1st and the 2nd leg elastic members 35,36 at the periphery of leg opening portion 6.
Waist elastic members 33 is configured in and is positioned on the length direction of the diaper 10 (with reference to Figure 10) under the deployed condition than the two ends of the length direction of absorbent main body 2 separately on more in the outer part the waist U, and waist portion elastomeric element 34 is configured in and is positioned at than the two ends of the length direction of absorbent main body 2 separately more in the inner part on the D of waist portion of (crotch portion side) on the length direction of the diaper 10 under the deployed condition.The 1st leg elastic members 35 is configured to the C of crotch portion from the A of veutro portion always, and the 2nd leg elastic members 36 is configured to the C of crotch portion from drosal part B always.
Elastomeric element 33,34,35,36 in the diaper 10 is fixed between outer layer sheet 31 and the internal layer sheet material 32 by adhesive with elongation state, by their contraction, waist rivel G2, waist rivel G1, G1 and leg rivel G3 have been formed at the periphery of waist U, the D of waist portion and leg opening portion 6.
On the other hand, A of veutro portion and drosal part B waist portion elastomeric element 34 separately is cut off in itself and absorbent main body 2 overlapping parts, prevents from that absorbent main body 2 from crossing to shrink greatly on width.Thus, absorbent main body 2 fits in the skin of wearer with the few state of fold, can obtain good anti-leakage and absorbent properties.In addition, also good in appearance.
In addition, the 1st and the 2nd leg elastic members 35,36 is cut off at the width central portion of the C of crotch portion respectively, is split into left and right sides two parts.Thus, the both sides of the absorbent core 23 of the C of crotch portion erect upward easily and are deformed into concavity, thereby can improve leak resistance and outward appearance.
The pattern roller 7 of the sheet material processing unit (plant) 1 ' of the 2nd embodiment is metal cylindrical roller, has leg elastic members cut-out portion 72 and elastomeric element cut-out portion of waist portion 73 on its outer peripheral face.Anvil roller 8 ' is the roller of accepting of pattern roller 7, and for metal cylindric, its outer peripheral face 81 is an even surface.
As Fig. 8 and shown in Figure 9, leg elastic members cut-out portion 72 is set on the axial central portion 7M of pattern roller 7.In the leg elastic members cut-out portion 72, a plurality of protuberance 72a that are used to cut off leg elastic members are highlighted the surface 71 that is arranged on columned roller main body.The a plurality of protuberance 72a that are used to cut off leg elastic members as shown in Figure 7, on position, cut off in the 1st and the 2nd leg elastic members 35,36 pressurizations that will be directed into continuously respectively between the outer peripheral face 81 of this protuberance 72a and anvil roller 8 ' between banded outer layer sheet 31 and the banded internal layer sheet material 32 corresponding to the width central portion of the C of crotch portion of diaper 10.
As Fig. 8 and shown in Figure 9, elastomeric element cut-out portion 73 of waist portion is being set on outside portion 7E, the 7E in two outsides that are positioned at above-mentioned central portion 7M on the axial length direction of pattern roller 7.In elastomeric element cut-out portion of waist portion 73, a plurality of protuberance 73a that are used to cut off waist portion elastomeric element are highlighted the surface 71 that is arranged on columned roller main body.Protuberance 73a is configured on the direction of principal axis and circumferencial direction of roller 7 with the state that disperses.Protuberance 73a corresponding to the A of veutro portion of diaper 10 and drosal part B separately with the overlapping position of absorbent main body 2 on, cut off in many waist portion elastomeric elements 34 pressurizations that will be directed into continuously respectively between the outer peripheral face 81 of this protuberance 73a and anvil roller 8 ' between banded outer layer sheet 31 and the banded internal layer sheet material 32.
In Fig. 7 and Figure 10 (a), the position of representing to be used to cut off the protuberance 73a pressurization of waist portion elastomeric element with symbol 73b, promptly cut off the position of waist portion elastomeric element, with the position that symbol 72b represents to be used to cut off the protuberance 72a pressurization of the 1st and the 2nd leg elastic members, the position that promptly cuts off leg elastic members.
When making up with anvil roller 8 ' described later, the axial central portion 7M of pattern roller 7 is the axial central portion 8M positions in opposite directions with this anvil roller 8 ', when with the 8 ' combination of aftermentioned anvil roller, outside portion 7E, the 7E of pattern roller 7 is respectively outside portion 8E, the 8E position in opposite directions that is positioned at its two outside with clamping central portion 8M on the direction of principal axis of this anvil roller 8 '.
Protuberance 72a, 73a in leg elastic members cut-out portion 72 and the elastomeric element cut-out portion of waist portion 73 is designed to its front end and distance between the shaft core line 7C of pattern roller 7 separately and equates.In addition, anvil roller 8 ' has the diameter of homogeneous on its whole direction of principal axis, with each protuberance of pattern roller 7 in opposite directions outer peripheral face 81 and the distance between the shaft centre line 8C equate.
Therefore, the gap (spacing distance) between the outer peripheral face 81 of protuberance 72a, the 73a of pattern roller 7 and anvil roller 8 ' is constant from the design of roller.But when producing the temperature difference of roll axial direction on the peripheral part of pattern roller 7 and anvil roller 8 ', particularly anvil roller 8 ', the radius at each position or diametric degrees of expansion can produce difference, thereby the gap at each position can produce difference.
The sheet material processing unit (plant) 1 ' of the 2nd embodiment is identical with the anvil roller 8 of the sheet material processing unit (plant) 1 of the 1st embodiment, and the temperature of the roll axial direction of the peripheral part of anvil roller 8 ' can be controlled respectively at this axial central portion 8M and two outside portion 8E, 8E.In addition, in the sheet material processing method of the 2nd embodiment, use sheet material processing unit (plant) 1 ', on one side the temperature of the roll axial direction of the peripheral part of anvil roller 8 ' is controlled respectively at this axial central portion 8M and two outside portion 8E, 8E, carry out the processing of sheet material on one side.
In the 2nd embodiment, the duplexer 3 that the outer layer sheet 31 and the banded internal layer sheet material 32 of clamping elastomeric element 33～36 stacked band shapes formed " go up volume at anvil roller 8 ' and hang more than 10 degree and transport [rolling more than angle θ 1 (with reference to Fig. 1)=10 degree]; meanwhile; protuberance 72a, 73a with leg elastic members cut-out portion 72 and elastomeric element cut-out portion of waist portion 73 pressurize, thereby carry out the cut-out of the 1st and the 2nd leg elastic members 35,36 and the cut-out of waist portion elastomeric element 34 simultaneously.
As shown in Figure 8, on the anvil roller 8 ' of the sheet material processing unit (plant) 1 ' of the 2nd embodiment, to extend and formed a plurality of heaters abreast fixing with hole 92 with the direction of principal axis of this roller 8 ', and cartridge heater 91 is inserted into and is fixed on that these are fixing with in each hole in hole 92.Be provided with to devices spaced apart many cartridge heaters 91 on the circumferencial direction of this roller 8 ', every cartridge heater 91 is provided on the radial direction of anvil roller 8 ' outer peripheral face near this roller 8 '.Cartridge heater 91 for example can be about 3～30 of devices spaced apart ground configurations on the circumferencial direction of roller 8 '.In example shown in Figure 8,8 cartridge heaters 91 are set on the position of 8 five equilibriums of circumferencial direction of roller 8 '.On the axial central portion 8M of anvil roller 8 ', be provided with the big heating portion 93 of caloric value, on the outside portion of this anvil roller 8 ' 8E, 8E, be provided with the little heating portion of caloric value 94,95 respectively.
In addition, on anvil roller 8 ', be provided with the temperature sensor 96,97,98 of temperature of roll axial direction that can detect the peripheral part of this roller 8 ' respectively at central portion 8M and two outside portion 8E, 8E.Each temperature sensor is on the middle position that is set on the circumferencial direction of roller 8 ' between 2 adjacent cartridge heaters, and in addition, the degree of depth and cartridge heater apart from outer peripheral face 81 on the radial direction of roller are basic identical.As temperature sensor, can use various known temperature sensors, for example can use thermocouple etc.
The big heating portion 93 of each cartridge heater is connected with roller 8 ' control device outward by the known means that are connected such as flexible cord in the axial region that is configured in roller 8 ' or rotary connector with little heating portion 94,95 and temperature sensor 96,97,98.In anvil roller 8 ', central portion 8M and outside portion 8E, 8E temperature control separately can use and the sheet material processing unit (plant) of the 1st embodiment in the control device of control device with identical function carry out same control.
In Fig. 8 and embodiment shown in Figure 9, it is fixing with hole 92 also to have formed the heater identical with anvil roller 8 ' on pattern roller 7.But, to compare with anvil roller 8 ', pattern roller 7 is subjected to the influence of sheet temperature less, thereby in the 2nd embodiment, the caloric value of the cartridge heater 99 that uses in the pattern roller is uniform on its length direction.But, also can replace, pattern roller 7 is also same with anvil roller 8 ', can control the temperature of the roll axial direction of peripheral part on central portion 7M and both ends 7E, 7E respectively.
In the sheet material processing method of the 2nd embodiment, according to can detecting the information that the temperature sensor 96,97,98 of the temperature on the roll axial direction of peripheral part of anvil roller 8 ' sends respectively at central portion 8M and two outside portion 8E, 8E, the temperature of the roll axial direction of the peripheral part of controlling anvil roller 8 ' respectively at above-mentioned central portion 8M and two outside portion 8E, the 8E of this roller.
Therefore, for example can be at the central portion 8M of this roller and outside portion 8E, 8E with the temperature maintenance of the roll axial direction of the peripheral part of anvil roller 8 ' constant, thus, can be on one side the gap between protuberance 72a, the 73b of pattern roller 7 and the anvil roller 8 ' (outer peripheral face 81) is maintained constant, Yi Bian utilize simultaneously elastomeric element cut-out portion of waist portion 73 protuberance 73a waist portion elastomeric element 34 cut-out and utilize the cut-out of leg elastic members 35,36 of the protuberance 72a of leg elastic members cut-out portion 72.
So, according to the 2nd embodiment, can stably carry out the cut-out of waist portion elastomeric element 34 and the cut-out of leg elastic members 35,36 under the high-precision control separately, can also when cutting off elastomeric element 34,35 and 36 reliably, suppress the damage of outer layer sheet 31 and/or internal layer sheet material 32.
Formation material, outer layer sheet 31 and the internal layer sheet material 32 of the housing material 3 during as manufacturing pull-on disposable diaper 10 can not have and restrictedly use the various sheet materials that in the past used in such article especially.When sheet material is nonwoven, from the viewpoint of flexibility etc., preferably single sheet or the laminated sheet that constitutes by hot blast method nonwoven, hot-rolling method nonwoven, jet net-spraying method nonwoven, spun bond nonwoven fabric, melt-blown nonwoven fabric etc.In addition, from further preventing the viewpoint of leakage, be preferably the nonwoven of water proofing property as the nonwoven of outer layer sheet 31 and 32 uses of internal layer sheet material.
As the formation material of elastomeric element 33～36, can not have and restrictedly use the various known elastomeric material that uses in the absorbent commodities such as disposable diaper and sanitary napkin especially.As elastomeric material, for example can list synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, retractility polyolefin, polyurethane etc.As the form of elastomeric element, can use section to be thread (rubber thread etc.) of rectangle, square, circle, polygon etc. or the filiform of banded (glue belt) thing or multifilament type etc.
Above-mentioned pull-on disposable diaper 10 is implemented above-mentioned processing and the housing material non-individual body 3 ' that obtains except using to the outer layer sheet the state of clamping elastomeric element under 31 and internal layer sheet material 32, can similarly operate and makes with the flow over manufacture method of pull-on disposable diaper of mode of what is called in the past.
For example, as shown in figure 11, turned back to envelope the both ends of absorbent main body 2 in the both sides of the housing material non-individual body 3 ' after the attaching absorbent main body 2, the both sides of housing material non-individual body are fixed on after the both ends of absorbent main body 2, with housing material non-individual body 3 ' and absorbent main body 2 doubling together.
Afterwards, after forming side seal portion 4,4 on the diaper non-individual body 100 that obtains,, can obtain the pull-on disposable diaper 10 of above-mentioned formation by being divided into single diaper.Leg opening portion form usefulness side cut 3S remove can absorbent main body 2 is fixed on the housing material non-individual body 3 ' before or after carry out.In the formation of side seal portion 4,4, also can use the method and apparatus of the 1st embodiment.
The invention is not restricted to above-mentioned embodiment, can in the scope that does not exceed purport of the present invention, do suitable change.
For example, in above-mentioned the 1st embodiment, between the 1st～the 3rd sealed roller 7A～7C and anvil roller 8, carry out 2 heat seals between sheet material, in above-mentioned the 2nd embodiment, between the protuberance of pattern roller 7 and anvil roller 8 ', be directed into the cut-out of 2 elastomeric elements 34～36 between sheet material, but also can on the outer peripheral face of a roller, form the protuberance of sealing usefulness and the protuberance that cuts off usefulness, thereby the cut-out of carrying out the heat seal of 2 sheet materials and being directed into 2 elastomeric elements between the sheet material simultaneously.In addition, when between the protuberance of pattern roller 7 and anvil roller 8 ', carry out 2 between sheet material heat seal and when being directed into the cut-out of 2 elastomeric elements between sheet material, can at random set and carry out thermosealed place and carry out the place that elastomeric element cuts off.
In addition, use the 1st～the 3rd sealed roller in the above-described first embodiment, but also can use 1 or 2 sealed rollers and anvil roller to carry out heat seal.In addition, can between pattern roller 7 or sealed roller 7A～7C and anvil roller 8 ', sheet material not pressurizeed yet, but between pair of rolls, sheet material is implemented press process with level and smooth outer peripheral face.
In addition, 2 sheet materials are the nonwoven except 2, also can be nonwoven and weave cotton cloth, paper or resin molding.In addition, also can except 2 sheet materials, engage together with other sheet material again, the elastomeric element that is configured in any interlayer of the sheet material that overlaps to form more than 3 layers is cut off.
In addition, as substituting of 2 heating regions can controlling temperature respectively, any one that can also be provided with in energy and above-mentioned 2 heating regions controlled the heating region of temperature integratedly.For example, when the sidepiece heating region that is provided with central heating region on the direction of principal axis at roller and is positioned at its both sides during as heating region, if can be in central heating region and two the sidepiece heating regions temperature of the roll axial direction of the peripheral part of control roll respectively, then two sidepiece heating regions also can be integratedly to carry out temperature controlled zone.
In addition, on sealed roller, hot-rolling, anvil roller, can use different cartridge heaters or between a part of heating region and other heating region, use different cartridge heaters at each heating region.
In addition, the peripheral part that sheet material is carried out one or two roller in 2 rollers of various processing is made of a plurality of blocks on the direction of principal axis that is arranged in this roller, will carries out temperature control respectively as different heating regions by a block roller peripheral part that forms and the roller peripheral part that forms by other block.For example, Figure 12 can be used as the figure of the sealing block that the sealing block of the sealed roller 7A～7C of the 1st embodiment and anvil roller 8 uses for expression.Sealing block 70 ' shown in Figure 12 is made of metal three blocks 74～76 that are arranged on the roll axial direction, and some gaps are arranged between the adjacent block.Also can dispose heat-insulating material in the gap.On block 74～76, disposed the independent heating portion 93～95 of temperature sensor 96～98 and heater on each block.The independent heating portion 93～95 of each block can control heating independently of each other.The sealing piece can make block 74～76 play a role as a plurality of heating region 7D～7F or the 8D～8F that are arranged on the roll axial direction by using as the sealed roller 7A～7C of the 1st embodiment or the sealing block of anvil roller 8.
So, the peripheral part of roller is made of a plurality of blocks that are arranged on the direction of principal axis, suppress the heat conduction between block, thus can be under the situation of the influence that suppresses other zone carry out the temperature control of each different heating zone 7D～7F or 8D～8F with high accuracy more.
As the Briefs type absorbent commodity, except pull-on disposable diaper, can also list Briefs type sanitary napkin etc.In addition, as substituting of cartridge heater, also can use various known heaters.In addition, as the Briefs type wearing article, except the Briefs type absorbent commodity, also can make diaper pants (diaper cover) or underpants, Underpant for female use in menstrual period etc.

Claims (6)

1. sheet material processing method, it is the sheet material processing method of between 2 rollers of configuration in opposite directions sheet material being processed, wherein, to described sheet material carry out described be processed as the compacting of sheet material, between sheet material heat seal and be configured at least a processing in the cut-out of the elastomeric element between sheet material, in the described processing method, one side will be controlled in a plurality of heating regions of temperature on being arranged in the direction of principal axis of this roller of the peripheral part of at least one roller respectively, on one side described sheet material is carried out described processing.
2. a material processing method according to claim 1, wherein, carry out the temperature detection of described peripheral part in a plurality of heating regions on being arranged in the direction of principal axis of described roller respectively, according to the temperature detection result of each heating region, the temperature of the heater of the roller inside that is configured in each heating region is controlled.
3. a material processing method according to claim 1 and 2, wherein, as described heating region, on the direction of principal axis of roller, have central heating region and the sidepiece heating region that is positioned at its both sides, in described central heating region and two sidepiece heating regions, the temperature of control roll peripheral part respectively.
4. a material processing method according to claim 1, wherein, the roller peripheral part of one or two described roller is made of a plurality of blocks on the direction of principal axis that is arranged in this roller, will carry out temperature control respectively as different heating regions by a block roller peripheral part that forms and the roller peripheral part that is formed by other block.
5. a material processing method according to claim 1, wherein, to the described heat seal processing that is processed as the side seal portion that forms the Briefs type wearing article that described sheet material carries out, at least 1 different a plurality of zone of stacked number that on the direction of principal axis of roller, have sheet material in 2 sheet materials that are heat sealed.
6. sheet material processing unit (plant), it is the sheet material processing unit (plant) that carries out the heat seal between sheet material and/or be configured in the cut-out of the elastomeric element between sheet material between 2 rollers of configuration in opposite directions, wherein, at least in 1 roller, has temperature sensor in each heating region of a plurality of heating regions on being arranged in the direction of principal axis of this roller, according to the information that each described temperature sensor sends, can in each heating region, control the temperature of the peripheral part of this roller.
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