CN102161233A - Bonding method using laser - Google Patents

Bonding method using laser Download PDF

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Publication number
CN102161233A
CN102161233A CN2010106061655A CN201010606165A CN102161233A CN 102161233 A CN102161233 A CN 102161233A CN 2010106061655 A CN2010106061655 A CN 2010106061655A CN 201010606165 A CN201010606165 A CN 201010606165A CN 102161233 A CN102161233 A CN 102161233A
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CN
China
Prior art keywords
laser
parts
patterned layer
intermediate member
heat
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Granted
Application number
CN2010106061655A
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Chinese (zh)
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CN102161233B (en
Inventor
山田功作
村上博文
藤田和也
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Hayakawa Rubber Co Ltd
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Hayakawa Rubber Co Ltd
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Publication of CN102161233A publication Critical patent/CN102161233A/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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/168—Laser beams making use of an absorber or impact modifier placed at the interface
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • 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
    • 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
    • B29C65/5057—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 positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—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
    • B29C66/05—Particular design of joint configurations
    • B29C66/305—Decorative or coloured 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
    • B29C66/40—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
    • B29C66/45—Joining of substantially the whole surface of the 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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
    • 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
    • B29C66/343—Making tension-free or wrinkle-free 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
    • B29C66/70—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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/746—Joining plastics material to non-plastics material to inorganic materials not provided for in groups B29C66/742 - B29C66/744
    • B29C66/7465—Glass
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis

Abstract

The invention discloses a bonding method using laser, wherein a first part and a second part are engaged by laser without the melting or decomposition of the pattern layer so as to make the appearance thereof more beautiful. The pattern layer 4 is non-permeability for laser. An intermediate part 5 for being bonded by laser is arranged adjacent to the pattern layer 4. Laser L with a temperature no more than the melting or decomposition temperature of the pattern layer 4 is irradiated on the pattern layer 4 for heating the pattern layer. The heat of the pattern layer 4 is used for heating the intermediate part 5.

Description

Use the joint method of laser
Technical field
The present invention relates to a kind of joint method that uses laser that first parts and second parts are engaged.
Background technology
For example, as the method that first and second parts of being made by resin material are engaged, extensively adopt the joint method that utilizes the laser irradiation.When using laser to engage, usually with first parts as laser permeation member with laser-transmissible, with second parts as the non-permeability parts of the laser with the non-permeability of laser.And, after first and second parts are overlapping, from first parts, one side irradiating laser.This laser sees through first parts and is absorbed by second parts.So, second parts just are heated, and the composition surface fusion of first and second parts is solidified then, and two parts become the state that has engaged.
In above-mentioned common laser is deposited, must there be parts to have the non-permeability of laser, for example, in patent documentation 1～3, disclose having and carried out deposited method between the parts of laser-transmissible.In the disclosed method of these documents, make between first parts and second parts to exist and contain the toner that absorbs laser or the resin material of coating, allow this resin material absorption laser and fusion, thus first and second parts are engaged.
Patent documentation 1: a day disclosure special permission communique spy opens the 2003-181931 communique
Patent documentation 2: a day disclosure special permission communique spy opens the 2004-1071 communique
Patent documentation 3: a day disclosure special permission communique spy opens the 2005-238462 communique
Summary of the invention
-invent technical problem to be solved-
But in recent years, for example, use or the electric equipment products package member for used for cosmetic box, residential equipment, outward appearance is paid attention to very much, carry out various designs and handle.For example, first parts in the outside and the second inboard parts are engaged when constituting package member, the enforcement printing waits the patterned layer that constitutes pattern at the back side of first parts with light transmission by being provided with, and can see through in the outside from first parts present stereovision when these first parts are observed patterned layer pattern.
When carrying out such design processing, if use disclosed method in patent documentation 1～3 is carried out laser cladding, the patterned layer that then becomes between first parts and second parts absorbs laser.Then, this patterned layer fusion or decomposition and carry out deposited to first and second parts.In case because patterned layer fusion or decomposition, even then cooling can not restore to the original state yet, so cause the deterioration of outward appearance.
The present invention finishes in view of the premises, and its purpose is when being provided with can be from patterned layer that first parts, one side is seen the time, can not make the patterned layer fusion or first and second parts is engaged with decomposing, thereby make outward appearance more attractive in appearance.
-in order to the technical scheme of technical solution problem-
In order to reach above-mentioned purpose, in the present invention, between first parts and second parts, be adjacent to patterned layer laser joint intermediate member is being set, not allowing the degree of patterned layer fusion or decomposition patterned layer be heated, first and second parts are engaged thereby utilize the heat of this patterned layer that has heated to heat intermediate member with laser.
The invention of first aspect is characterized in that, in the joint method that first parts with light transmission and second parts is engaged with laser, in described first parts and described second parts, at least one parts is made by the material with laser-transmissible, the non-permeability patterned layer of laser is set so that pattern is presented on the outside of these first parts at least one parts in described first parts and described second parts, being adjacent to laser that described patterned layer is provided for that described first parts and described second parts are engaged between these first parts and second parts engages and uses intermediate member, be used for this patterned layer is heated to the laser of the set point of temperature that becomes the fusion that is no more than this patterned layer or decomposition temperature from described parts one side with laser-transmissible towards described patterned layer irradiation, utilize the heat of this patterned layer to heat described intermediate member, described first parts and described second parts are engaged.
That is, under the situation that first parts are made by the material with laser-transmissible, from first parts, one side irradiating laser.This laser sees through first parts and is absorbed by patterned layer, thereby patterned layer is heated.Utilize the heat of this patterned layer that middle parts are heated again.So, and these two parts are engaged with the bond strength of regulation because intermediate member is heated fusion or softens this intermediate member fluid-tight engagement on first and second parts.This moment, patterned layer can fusion or decomposition.
Under the state with first and second components bonding, can observe the pattern of patterned layer from the outside of first parts, thus the design of the sense that can obtain having levels.Because this patterned layer can fusion or decomposition, so outward appearance is more attractive in appearance.
The invention of second aspect is characterized in that in the invention of first aspect, intermediate member has the adhesiveness that sticks on first parts and second parts.
According to this structure, can before irradiating laser, utilize intermediate member to make first and second parts integrated easily.
The invention of the third aspect is characterized in that, first or the invention of second aspect in, intermediate member is by being made by the heat-fusible materials of the heat of patterned layer institute fusion.
The invention of fourth aspect is characterized in that in the invention of the third aspect, heat-fusible materials is a thermoplastic elastomer (TPE).
The invention of the 5th aspect is characterized in that in the invention of the third aspect, heat-fusible materials is the acrylic compounds heat-fusible materials.
The invention of the 6th aspect is characterized in that in the invention of the either side aspect first to five, intermediate member has the thermal conductivity filler.
According to this structure, the heat of patterned layer is easy to be transmitted to whole intermediate member by the thermal conductivity filler.
The invention of the 7th aspect is characterized in that, in the invention of the either side aspect first to six, intermediate member is configured in a side and the described patterned layer opposite with the laser direction of illumination of patterned layer adjacent, is mixed with the laser absorbent that absorbs laser in the described intermediate member.
According to this structure, for example, when from first parts, one side irradiating laser, the laser that has seen through first parts is at first absorbed by patterned layer, and when laser was not absorbed by patterned layer fully, a small amount of laser saw through patterned layer and absorbed by the laser absorbent of intermediate member.So, just can heat middle parts.
The effect of-invention-
Invention according to first aspect, the non-permeability patterned layer of laser is set so that pattern is presented on the outside of first parts, be provided with laser joint intermediate member because between first parts and second parts, be adjacent to patterned layer, with laser patterned layer being heated to becomes the set point of temperature that is no more than fusion or decomposition temperature, utilize the heat of patterned layer to heat intermediate member so that first and second parts are engaged, so patterned layer can fusion or decomposition, can access outward appearance joint product more attractive in appearance.
Invention according to second aspect, because intermediate member has the adhesiveness that sticks on first parts and second parts, so can be before irradiating laser, make the integrated and inhibition location dislocation of first parts and second parts easily, and can fully guarantee bond strength, thereby can access the better joint product of outward appearance.
According to the invention of the third aspect, because intermediate member is a heat-fusible materials, so can obtain the adhesive strength of the first and second enough parts.
According to the invention of fourth aspect, because intermediate member is a thermoplastic elastomer (TPE), so can utilize the heat of patterned layer to obtain bonding force reliably.
According to the invention of the 5th aspect, because intermediate member is the acrylic compounds heat-fusible materials, so can reduce cost and obtain enough adhesive strengths.
According to the invention of the 6th aspect,,, reliably first and second parts are engaged thereby make the intermediate member fusion reliably or soften also so the heat of patterned layer is easy to be transmitted to whole intermediate member because in intermediate member, be mixed with the thermal conductivity filler.
According to the invention of the 7th aspect, because be mixed with laser absorbent, so can allow intermediate member absorb the laser that is not absorbed by patterned layer at intermediate member.So, just can effectively utilize laser to heat intermediate member.
Description of drawings
Fig. 1 is the cutaway view of the related joint product of embodiment;
Fig. 2 is the cutaway view of the state before expression engages each parts.
Description of reference numerals
1 engages product
2 base materials (second parts)
3 light transparent member (first parts)
4 patterned layer
5 intermediate members
L laser
The specific embodiment
Below, with reference to the accompanying drawings embodiments of the present invention are elaborated.Should illustrate that following embodiment is preferred in essence example, does not limit intentions such as the present invention, application of the present invention or purposes scope of the present invention.
Fig. 1 represents to utilize the related joint method of embodiments of the present invention to engage formed joint product 1.These joint product 1 for example as used for cosmetic box, residential equipment with or electric equipment products use with package member, be to constitute the base material 2 and the light transparent member 3 stacked formed joint product that constitute the outside of the inboard of this package member, light transparent member 3 is provided with the patterned layer 4 that can see from the outside.Base material 2 and light transparent member 3 engaged make them integrated.Light transparent member 3 is first parts of the present invention, and base material 2 is second parts of the present invention.
Base material 2 is the plate-shaped members that do not allow the material of the non-permeability of laser that laser sees through make by having.The non-permeability of laser is the laser absorption that absorbs laser, sees through and/or has reflected laser as heating source even be meant part, also can absorb the character of the laser of remainder, also comprises the situations that laser is all absorbed.As material with this character, for example except that metal, pottery, the material that also has in resin or rubber hybrid pigment or dyestuff to form.As the non-photopermeability of laser, for example the transmitance of the laser of optimal wavelength 940nm is a less than 15%.In the present embodiment, base material 2 is made by metal material.
Light transparent member 3 is by water white transparency and has the plate-shaped member that allows the material of the laser-transmissible that laser sees through make.Laser-transmissible is meant, can reflect hardly do not absorb yet as the laser of heating source allow laser see through, can fusion even perhaps see through and/or reflected a part of laser yet, and the character that remaining laser is seen through, also comprise the situation that makes the whole permeable materials of laser itself.Light transparent member 3 for example can be made by thermoplastic resin, particularly can list: polyethylene (high density polyethylene (HDPE) (HDPE), low density polyethylene (LDPE) (LDPE), Linear low-density polyethylene (LLDPE), very low density polyethylene (VLDPE), ultra-low density polyethylene (ULDPE), VHD polyethylene (UHDPE), polyethylene), polypropylene (polypropylene copolymer (PP Co-Polymer), polypropylene homopolymer (PP Homo-Polymer), polypropylene terpolymer (PP Ter-Polymer)), polyvinyl chloride (PVC), polystyrene (PS), polymethyl methacrylate (PMMA), acrylonitrile-butadiene-styrene resin (ABS), SAN (SAN), the K-resin, SBS resin (SBS resin), polyvinylidene chloride resin (PVDC resin), ethylene-vinyl acetate resin (EVA resin), acrylic resin, butyral resin, silicones, polyamide (PA, PA6, PA66, PA46, PA610, PA612, PA6/66, PA6/12, PA6T, PA12, PA1212, PAMXD6), ethylene tetrafluoroethylene copolymer, liquid crystal polymer, polybutylene terephthalate, polyether-ether-ketone, polyether-ketone, PEKK, PEN, PETG, polyimides, polyacetals, polyamide-imides, polyphenylene oxide, polyphenylene oxide, Merlon, polyphenylene sulfide, polysulfones, poly-second sulphur sulfone (polythioethylsulfone), polytetrafluoroethylene (PTFE), polyether sulfone and PEI etc.
In addition, thermoplastic resin also comprises the chemical bonding polar functional group and the modified resin that forms, particularly can list: resins such as acrylic acid modified olefin resin, maleic acid modified olefin resin, chlorination modified olefin resin (chlorinated polypropylene (CPP), haloflex (CPE)), silane-modified olefin resin, ionomer resin, modified nylon olefin resin, epoxy modified resin, ethylene-vinyl alcohol resin (EVOH), ethylene vinyl acetate resin, hot melt adhesive resin can also be the mixture or the composition of these resins and above-mentioned thermoplastic resin.
Light transparent member 3 can be a thermoplastic elastomer (TPE), particularly can list: the phenylethylene elastomer, olefin type elastomer, polyester elastomer, the polyvinyl chloride-base elastomer, polyamide-based elastomer, the polybutadiene elastomer, the isoprenoid elastomer, ion beam and amorphous polyethylene class elastomer (commodity example: DUPONT-MITSUI POLYCHEMICALS CO., LTD. system Ha イ ミ ラ Application), haloflex and amorphous polyethylene class elastomer (commodity example: the system ミ ラ プ レ of Mitsubishi Chemical one Application), fluorine class elastomer, the polyurethanes elastomer, acrylic elastomer etc.
Light transparent member 3 also can be a thermosetting resin, particularly can list: phenolic resins (phenolresin), Lauxite, melamine resin, epoxy resin, unsaturated polyester resin etc.
Light transparent member 3 can also be to have heat cured rubber, particularly can enumerate: natural rubber, isoprene rubber, ethylene propylene diene rubber, EPM, butadiene-styrene rubber, butadiene rubber, CSM, isoprene rubber, chloroprene rubber, acrylic rubber, ECD, polyurethane rubber, acrylonitrile-butadiene rubber, hydrogenated nitrile-butadiene rubber, fluorubber and silicon rubber etc.
And, can make light transparent member 3 by the compound resin that mixing reinforcing material or packing material in above-mentioned thermoplastic resin or thermosetting resin are made.
In above-mentioned resin, elastomer, for example can mix following additive: be selected from least a additive in the group of heat stabilizer, antioxidant, ultra-violet stabilizer, conductive agent, nucleator, releasing agent, fire retardant, antistatic additive, processing aid, painted and functional pigment or dyestuff, crosslinking agent, plasticizer and vulcanizing agent.When mixing colouring pigment or dyestuff, combined amount wants to guarantee the laser-transmissible stipulated.
Except that above-mentioned resin, light transparent member 3 can also be made by for example soda-lime glass, lead glass, Pyrex etc.And, can also be safety glass, laminated glass, laminated glass etc.As laser-transmissible, for example the transmitance of the laser of optimal wavelength 940nm is more than 20%, more preferably more than 50%.In addition, light transparent member 3 is not limited to colourless, can be light color also, as long as have the light transmission that can see patterned layer 4 from the outside.
The thickness of base material 2 and light transparent member 3 is according to the kind of package member etc. and different, thickness for number mm about.And base material 2 can be made of the laser-transmissible parts.
The back side of light transparent member 3 is that the face of base material 2 one sides is provided with patterned layer 4 so that pattern is presented on the outside of light transparent member 3.This patterned layer 4 is filmed by printing and is constituted, and printing is filmed by the printing ink that contains dyestuff or pigment is formed attached to the back side of light transparent member 3.For curing property printing ink compound, for example can list: acrylate, urethane acrylate (urethane acrylate), epoxy acrylate, carboxy-modified epoxy acrylate, polyester acrylate, unsaturated polyester resin, copolymerization class acrylate, polyacrylic acid acryloyl ester (polyacrylacrylate), cycloaliphatic epoxy resin, glycidyl ester type epoxy resin, vinethene compound, oxetane compound etc.Curing property printing ink for example can list: the air dry curing type, utilize the dry thermohardening type that forms of sintering, use the dual-pack reaction-curable of curing agent, the radiating light curing type that makes it to solidify by ultraviolet ray or electron ray etc., lacquer etc.Even if as long as the next printing ink thermoplasticity of laser irradiation condition below melting point is also no problem.And, as dyestuff, getting final product so long as have the dyestuff of the non-permeability of laser, kinds such as synthetic dyestuffs such as natural dyes such as madder, safflower, reaction, sulfuration, naphthols, fluorescent dye are all no problem.As pigment, as long as have the pigment of the non-permeability of laser, for example can list inorganic pigments such as carbon black or composite oxides class pigment, organic pigments such as phthalocyanine pigment, azo class pigment, mordant pigment, many lopps pigment can use the various pigment that have with the corresponding non-permeability of optical maser wavelength.Form patterned layer 4 by filming, can obtain exquisite pattern with printing.As printing process, for example can use various printing processes such as letterpress, intaglio printing, flexographic printing, hectographic printing, serigraphy, intaglio printing (gravure printing), laser printing, ink jet printing.
The pattern that is made of patterned layer 4 for example comprises literal, figure, symbol, picture, gradual change pattern (gradationpattern), with monochromatic coating comprehensively or the various forms such as pattern that form by above combinations of patterns.As the thickness of patterned layer 4, for example below 100 μ m more than the 1 μ m, but be not limited to this scope.And as the non-permeability of the laser of patterned layer 4, for example the transmitance of the laser of optimal wavelength 940nm is a less than 15%.
Patterned layer 4 except that as mentioned above by printing film form, for example can also wait and form by vapor-deposited film, pad pasting, barrier coating coating (primer).Under the situation of vapor-deposited film, patterned layer 4 as thin as a wafer.And not needing whole patterned layer 4 all is the non-permeability of laser, and can have only the corresponding part in bonding part with base material 2 and light transparent member 3 is the non-permeability of laser.
The surface of base material 2 is that the face of light transparent member 3 one sides is provided with laser joint intermediate member 5, and this intermediate member 5 is adjacent to patterned layer 4.
Intermediate member 5 is made of the sheet elastomeric element.Particularly intermediate member 5 is by because of being made by the heat-fusible materials of the heat fusion of the patterned layer after the LASER HEATING 4, preferably demonstrates in the polymer substance (binding agent or elastomer) of caoutchouc elasticity to have thermoplastic material near normal temperature.That is, can use material such as above-mentioned binding agent or thermoplastic elastomer (TPE) or cross-linked rubber etc., be not particularly limited, can list rubber-like, acrylic compounds, carbamates, silicon class etc. as binding agent as intermediate member 5.As thermoplastic elastomer (TPE), for example can list: the phenylethylene elastomer, olefin type elastomer, polyester elastomer, the polyvinyl chloride-base elastomer, polyamide-based elastomer, the polybutadiene elastomer, the isoprenoid elastomer, ion beam and amorphous polyethylene class elastomer (commodity example: commodity example: DUPONT-MITSUIPOLYCHEMICALS CO., LTD. system Ha イ ミ ラ Application), haloflex and amorphous polyethylene class elastomer (commodity example: the system ミ ラ プ レ of Mitsubishi Chemical one Application), fluorine class elastomer, the polyurethanes elastomer, acrylic elastomer etc.Thermoplastic elastomer (TPE) is very common as the matrix of rubber-like binding agent, is not particularly limited, and can cooperate tackifier or oily, aqueous oligomer, crosslinking agent to wait and form binding agent.
As tackifier, particularly for example can list the rosin based tackifying resin, be unmodified rosin such as gum rosin, wood rosin, toll oil rosin (natural rosin), utilize methods such as hydrogenation, disproportionation, polymerization that these unmodified rosin are carried out the modified rosin that modification forms (Foral, disproportionated rosin, newtrex and the rosin that forms through other chemical modification etc.), can list various rosin derivatives etc. in addition.As above-mentioned rosin derivative, for example can list: with alcohols unmodified rosin is carried out the ester compounds of the rosin that esterification forms, perhaps modified rosins such as Foral, disproportionated rosin, newtrex are carried out the rosin ester classes such as ester compounds of the modified rosin that esterification forms with alcohols; With unrighted acid unmodified rosin or modified rosin (Foral, disproportionated rosin, newtrex etc.) are carried out the unrighted acid modified rosin class that modification forms; With unrighted acid the rosin ester class is carried out the unrighted acid modified rosin ester class that modification forms; Carboxyl in unmodified rosin, modified rosin (Foral, disproportionated rosin, newtrex etc.), unrighted acid modified rosin class or the unrighted acid modified rosin ester class is reduced the rosin alcohols that handle to form; The slaine of rosin based (particularly rosin ester class) such as unmodified rosin, modified rosin or various rosin derivatives.As rosin derivative, can use and utilize acid catalyst to make rosin based (unmodified rosin, modified rosin or various rosin derivatives etc.) carry out the resulting rosin phenol resin of thermal polymerization etc. with phenol generation addition reaction.
As the terpene tackifying resin, for example can list: terpene resins such as australene polymer, beta-pinene polymer, cinene polymer, perhaps these terpene resins are carried out modification terpene resin (for example, terpene phenolic air aldehyde resin, phenylethene modified terpene resin, aromatic series modification terpene resin, hydrogenation terpene resin etc.) that modification (phenol modification, aromatic series modification, hydrogenation modification, hydrocarbon modification etc.) forms etc.
As the hydro carbons tackifying resin, for example can list: [carbon number is 4～5 terpenes or diene (terpenes such as butene-1, isobutene, amylene-1 to the aliphatic category hydrocarbon resin, diene such as butadiene, 1,3-pentadiene, isoprene etc.) etc. aliphatic hydrocarbon polymer etc.]; Fragrance same clan hydrocarbon resin [carbon number is the polymer of 8～10 the fragrant same clan hydrocarbon that contains vinyl (styrene, vinyltoluene, AMS, indenes, methyl indenes etc.) etc.]; Aliphatic category cyclic hydrocarbon resin [to so-called " C4 petroleum distillate " or " C5 petroleum distillate " carry out cyclisation Dimerized after again the polymer of the ester ring type hydrocarbon resins that forms of polymerization, cyclic diolefine compound (cyclopentadiene, bicyclopentadiene, ethylidene norbornene, cinene etc.) or its hydride, the aromatic rings of fragrant same clan hydrocarbon resin or aliphatic, fragrant same clan Petropols carried out ester ring type hydrocarbon resins that hydrogenation forms etc.]; Aliphatic, fragrant same clan Petropols (styrene-olefinic copolymer etc.); Aliphatic, alicyclic ring same clan Petropols; Hydrogenated hydrocarbon resins; The benzofuran resinoid; Various hydrocarbon resins such as coumarone-indene resinoid.Can from the oil of roughly dividing into paraffinic, cycloalkane, aromatic hydrocarbons, select.
As aqueous oligomer, can be selected from rubber-like, polyesters, other molecular weight such as acrylic compounds, phenylethylene, polyisoprene or butadiene and be hundreds of～high-viscosity polymer about thousands of.Preferably in addition use at least a in the group that is selected from heat stabilizer, antioxidant, ultra-violet stabilizer, conductive agent, nucleator, releasing agent, fire retardant, antistatic additive, processing aid, painted and functional pigment or dyestuff, crosslinking agent, plasticizer and vulcanizing agent as required.
As cross-linked rubber, for example can list: natural rubber, isoprene rubber, ethylene propylene diene rubber rubber, EPM, butadiene-styrene rubber, butadiene rubber, CSM, isoprene rubber, chloroprene rubber, acrylic rubber, ECD, polyurethane rubber, acrylonitrile-butadiene rubber, hydrogenated nitrile-butadiene rubber, fluorubber and silicon rubber etc.Can in these cross-linked rubbers, cooperate various additives as required.For example can list: aromatic mercaptans class, aromatic series disulfides, aromatic mercaptans zinc class peptizer; Organic acid, nitroso compound class, sulfonamide antiscorchiag agent; Paraffinic, the fragrant same clan, cycloalkane, aqueous rubber-like plasticizer; Synthetic resin tackifier such as rosin derivative class, terpene natural resin class tackifier or benzofuran (indenes) resinae, tree oil lipid, alkyl phenol resin class, dimethylbenzene, formaldehyde resin; Halogen, metal hydrate class, silicon class, phosphorus type flame retardant; Antioxidant; Heat stabilizer; Light stabilizer; Ultra-violet absorber; Lubricant; Pigment; Crosslinking agent; Crosslinking coagent; Anti-recovery agent; Silane coupler, these common rubber plastic fiting chemical products of titanate coupling agent.
The melt temperature of intermediate member 5 is set at lower than the fusion of patterned layer 4 or decomposition temperature.
With binding agent or cross-linked rubber during as the material of intermediate member 5, for fear of the situation of the deposited property decline that causes by laser, the preferred low material of the degree of cross linking.
The thickness of preferred intermediate member 5 but is not limited to this scope for example below 1000 μ m more than the 10 μ m.It is the film shape as thin as a wafer the time when middle parts 5, and it is tabular when thicker.
As the heat-fusible materials of making intermediate member 5, more specifically for example can be rubber-like acrylic compounds block polymer at normal temperatures.As heat-fusible materials, for example can be styrene-isoprene-phenylethene (SIS), s-B-S (SBS), styrene-hydrogenated butadiene-styrene (SEBS) etc.
In intermediate member 5, be mixed with the thermal conductivity filler.As the thermal conductivity filler, for example, metal oxides such as aluminium oxide, silica, magnesia, perhaps inorganic nitrides such as silicon nitride, boron nitride, aluminium nitride, titanium nitride, zirconium nitride, tantalum nitride, niobium nitride etc.
As other thermal conductivity filler, can list: potassium titanate, aluminium borate, magnesium sulfate, calcium carbonate etc. and their whisker, glass fibre, carbon fiber, metallic fiber, aramid fiber, asbestos, carborundum, pottery, barium sulfate, calcium sulfate, white bole, clay, silica, pyrophyllite, bentonite, sericite, zeolite, montmorillonite, mica (mica), mica, nepheline syenite, talcum, attapulgite, wollastonite, polycrystalline mullite fibre (PMF), ferrite, calcium silicates, magnesium carbonate, dolomite, zinc oxide, titanium oxide, magnesia, iron oxide, molybdenum bisuphide, graphite, gypsum, bead, glass dust, the glass hollow ball, quartzy, quartz glass etc.The filler that uses can be a hollow.And these fillers can also carry out using after the preliminary treatment with coupling agents such as silanes, titanium classes as required also with two or more.
Can use the part as intermediate member 5 such as thermal conductivity film, cloth, aluminium foil or Copper Foil.The thickness of preferred aluminium foil is for for example about 50 μ m, and preferably the thickness of Copper Foil is for for example about 30 μ m.And be not limited to aluminium foil or Copper Foil, also can use various metallic films or sheet metal a part as intermediate member 5.
In intermediate member 5, be mixed with the laser absorbent that absorbs laser.As laser absorbent, for example in the black absorption agent, can list: inorganic pigments such as carbon black, dim, boneblack, graphite or metal oxide iron oxide black (magnetite), titanium are black, chromium oxide; Organic pigments such as AZOpigments, many lopps pigment.
The absorbent that absorbs the near infrared region wavelength also can use as laser absorbent; for example can preferably use the anthocyanin pigment; the thionyl nickel complex; two (suitable-1; the 2-toluyl groups) ethene-1; 2-two mercaptan nickel (bis (cis-1; 2-toluyl) ethylene-1; 2dithiolate nickel); two (1-chloro-3; 4 two mercaptan) metal complex such as nickel TBuA, and can use acid cyanines (diethylaminonaphthol squarylium) in the lignocaine of maximum absorption wavelength naphthols side are arranged under 830nm; side's sour cyanines (squarylium) pigments such as dimethylamino naphthols side acid cyanines.And can preferably use polymethine class pigment, (two) inferior amine salt (immonium) class pigment, phthalocyanines pigment, triarylmethane class pigment, naphthoquinones class pigment etc.
Laser absorbent is not limited to above-mentioned laser absorbent, so long as absorb the material of laser and heating its dissolving or dispersion is used.
In intermediate member 5, be mixed with tackifier.So, intermediate member 5 just has adhesiveness at the face of base material 2 one sides with at the face of light transparent member 3 one sides.Therefore, intermediate member 5 sticks on base material 2 and the light transparent member 3.The adhesion of intermediate member 5 is set at: according to what 10.4 of JIS Z0237 determined 180 of SUS304 plate is spent peel adhesion more than 0.1N/25mm.
Can list above-mentioned tackifier as tackifier.
The SP value (solubility parameter) of the resinous principle of intermediate member 5 and patterned layer 4 thus can access very high bond strength near intermiscibility is just good more more.
Then, the manufacturing main points to above-mentioned joint product 1 describe.At first, form patterned layer 4 at the back side of light transparent member 3.Make the coloring printing ink that contains pigment the back side attached to light transparent member 3 with printing machine etc.
Make patterned layer 4 under the situation of vapor-deposited film, utilizing evaporation coating device to make the back side of evaporation thing evaporation such as metal in light transparent member 3; When making patterned layer 4, at the back side of light transparent member 3 sticking film for film; When making patterned layer 4, at the back side of light transparent member 3 barrier coating coating for subbing.
And, can shine for example UV (ultraviolet ray), EB (electron ray) to base material 2, perhaps use ozone etc.So, the postradiation bonding force of laser is improved.
To dispose intermediate member 5 and be configured between base material 2 and the light transparent member 3, base material 2, intermediate member 5 and light transparent member 3 is overlapping.At this moment, because intermediate member 5 has adhesiveness, so light transparent member 3 and base material 2 stick on the intermediate member 5.So, because light transparent member 3 becomes the state that temporarily is fixed on the base material 2, so when irradiation aftermentioned laser, also can not suppress location dislocation even two parts 2,3 are not clamped.In addition, also can clamp base material 2 and light transparent member 3 along thickness direction, because by clamping material 2 and light transparent member 3, the generation of the base material 2 that the heating in the time of can suppressing by irradiating laser causes and the expansion of light transparent member 3, base material 2 and 3 bubbles of light transparent member is so can further improve the reliability of joint.
Then, as shown in Figure 1, the 4 irradiating laser L from light transparent member 3 one sides towards patterned layer.The device that shines this laser L can use well-known device.As the kind of laser L, can be any laser such as gas laser, Solid State Laser, semiconductor laser for example, the kind of laser L is without limits.The kind of laser L can see through degree according to the laser of the fusion of the thickness of the material of base material 2 and light transparent member 3, light transparent member 3, patterned layer 4 or decomposition temperature, light transparent member 3 and wait suitably and select.And laser L can be single wavelength laser, also can be the laser with two above wavelength.
The power output of laser irradiation device is set at the low value about several watts, and the size of power output is that patterned layer 4 can not seen through light transparent member 3 and arrive the laser L of patterned layer 4 and the degree of fusion or decomposition.For the sweep speed of laser L, being set at patterned layer 4 can fusion or the speed of decomposition.When engagement range was wider than the irradiation diameter of laser L, mobile lasing light emitter in one side or joint object (base material 2, intermediate member 5 and light transparent member 3) were Yi Bian carry out the irradiation of laser L as required.
The laser L that is shone sees through light transparent member 3 and arrives patterned layer 4.The laser L that has arrived patterned layer 4 is absorbed by patterned layer 4, and patterned layer 4 is just heated by this laser L.Because the power output of laser L is set to aforesaid low power output, so the temperature of patterned layer 4 becomes the fusion that is no more than patterned layer 4 or the temperature of decomposition temperature.
The heat of patterned layer 4 conducts to the intermediate member 5 of adjacency.Because be mixed with the thermal conductivity filler in the intermediate member 5, so the heat of patterned layer 4 is easy to conduct to whole intermediate member 5.Thereby being heated to, intermediate member 5 becomes the melt temperature fusion.Intermediate member 5 one fusions, with regard to fluid-tight engagement on the patterned layer 4 of light transparent member 3, and also fluid-tight engagement on base material 2.At this moment, because the power output of laser L has been carried out above-mentioned setting, so patterned layer 4 can fusion or decomposition.
Sometimes a part of laser L (the several % among the laser L that has shone) can see through patterned layer 4.The a small amount of laser L that has seen through patterned layer 4 arrives intermediate member 5.Because be mixed with laser absorbent in this intermediate member 5, absorbed by intermediate member 5 so see through the laser L of patterned layer 4.So, intermediate member 5 also can be by this a small amount of LASER HEATING, so can effectively utilize laser L.
As mentioned above, according to this joint method, because as long as laser L has the low power output about several watts, damage (burn or be out of shape) so can suppress base material 2 or light transparent member 3 because of heat, and, around base material 2 when other parts or machine are arranged, can also suppress the damage that these parts or machine is caused by heat.Therefore, this joint method is of many uses.
Then, after the irradiation of laser L finishes, intermediate member 5 coolings, curing.Intermediate member 5 solidifies, and obtains engaging product 1 so base material 2 and light transparent member 3 are engaged.If observe this joint product 1 from the outside of light transparent member 3, then the pattern of patterned layer 4 sees through light transparent member 3 and is presented on inside, thereby shows stereovision in pattern.Because this patterned layer 4 is not dissolved, so outward appearance is more attractive in appearance.
When the irradiation that utilizes laser L is carried out just accepting to cool off such thermal cycle again after the heating when deposited to base material 2 and light transparent member 3.At this moment, because the difference of the linear expansion coefficient of base material 2 and light transparent member 3 etc. can produce stress sometimes on joint interface.To this, because intermediate member 5 made by binding agent or elastomer, so can relax the stress of joint interface.So, just can prevent the decline of bond strength or peel off.
In the joint product 1 of gained, thermal stress or mechanical force increase and produce stress on the joint interfaces of base material 2 and light transparent member 3 in use sometimes, and such stress also can be relaxed because of the existence of intermediate member 5.Therefore, even the long-term joint product 1 that use also can be kept bond strength.
As described above, the joint method related according to present embodiment, the non-permeability patterned layer 4 of laser is set so that pattern is presented on the outside in light transparent member 3, between light transparent member 3 and base material 2, be adjacent to patterned layer 4 intermediate member 5 is set, utilize laser L that patterned layer 4 is heated to and become the set point of temperature that is no more than fusion or decomposition temperature, because utilize the heat of patterned layer 4 to heat intermediate member 5 so that base material 2 and light transparent member 3 are engaged, so can access outward appearance joint product 1 more attractive in appearance.
Because intermediate member 5 has the adhesiveness that sticks on base material 2 and the light transparent member 3, so before irradiating laser L, can make base material 2 and light transparent member 3 integrated suppressing location dislocation easily, thereby can access enough bond strengths, and can access outward appearance and better engage product 1.
Owing to make intermediate member 5 for heat-fusible materials, so can obtain enough adhesive strengths.
Owing to mixed the thermal conductivity filler in the intermediate member 5, so the heat of patterned layer 4 is easy to conduct to whole intermediate member 5, make intermediate member 5 fusions reliably, engage and just can carry out reliably.
Owing to be mixed with laser absorbent in the intermediate member 5, can make intermediate member 5 absorb the laser that is not absorbed by patterned layer 4.So, just can effectively utilize laser L and heat intermediate member 5.
In addition, in the above-described embodiment,, but be not limited to this, can constitute base material 2 by parts with laser-transmissible from light transparent member 3 one side irradiating lasers, and from base material 2 one side irradiating lasers.At this moment, intermediate member 5 becomes the parts with laser-transmissible.So, because heat from the laser arrival patterned layer 4 of base material 2 one sides irradiation and to patterned layer 4,, base material 2 and light transparent member 3 are engaged so utilize the heat of patterned layer 4 to heat intermediate member 5 as mentioned above.
And, can constitute intermediate member 5 by core layer and the adhesion layer that is separately positioned on the core layer two sides.
Intermediate member 5 can not can because of the heat fusion or the decomposition of patterned layer 4, only be softening.This point can wait by the material that changes output power of laser or intermediate member 5 and realize.Because, also can make intermediate member 5 fluid-tight engagement on base material 2 and light transparent member 3, so can carry out bonding reliably by making intermediate member 5 softening.
Intermediate member 5 can be made of adhesive tape.At this moment, fluid-tight engagement can suppress the situation that there is bubble in the bonding part by intermediate member 5 is softened, and air-tightness and watertightness improve.Particularly, use the narrow adhesive tape of width, the effect that air-tightness and watertightness improve is obvious.
And, patterned layer 4 can be set, at the arranged outside intermediate member 5 of patterned layer 4 on base material 2.At this moment, because the intermediate member 5 non-permeability parts that are laser, so from light transparent member 3 one side irradiating lasers the time, laser sees through 5 pairs of patterned layer 4 of intermediate member and heats, the heat of this patterned layer 4 conducts to intermediate member 5.
Joint method involved in the present invention except used for cosmetic box, residential equipment with or electric equipment products with the package member, can also be applicable to the situation of making various joint product.
[embodiment]
Describe according to table 1 pair embodiments of the invention.
[table 1]
Light transparent member 3 all is same parts in all comparative examples and embodiment 1～4, is methacrylic resin (PMMA) sheet material, and thickness is that 2mm, laser transmittance are 93%.
Patterned layer 4 is all identical in all comparative examples and embodiment 1～4, and (JUJO CHEMICAL CO., the LTD. system: レ イ キ ユ ア GA4100) carrying out serigraphy is the pattern of 10 μ m to form thickness to use black in the UV screen printing ink.Laser transmittance is 4%.
Base material 2 and light transparent member 3 are overlapping in the scope of wide 25mm * dark 35mm.Intermediate member 5 is wide 25mm * dark 5mm, becomes the state that is clipped by base material 2 and light transparent member 3, so that whole intermediate member 5 is all between base material 2 and light transparent member 3.
Laser is with 0mm focal length irradiation, scans (scanning distance 25mm) along the width of base material 2 and light transparent member 3.
1, comparative example
Intermediate member 5 is the acrylic compounds hot-melt adhesive, and thickness is 50 μ m.The acrylic compounds hot-melt adhesive is mixed by acrylate copolymer (for example, KURARAY CO., LTD. makes LA2250), tackifier (for example Arakawa Chemical Industries, Ltd.'s system SE-A-115).
Base material 2 is stainless steel (SUS304) sheet material, and thickness is 1mm.
Laser is semiconductor laser, wavelength 940nm, power output 30W, sweep speed 6m/ branch.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use.Particularly, bond strength is if base material 2 is drawn back with light transparent member 3 then the degree that is easy to just separate with hand.
The test method of bond strength is carried out in the following ways: the direction that intersects vertically in the scanning direction of shear direction upper edge and laser applies pulling force (draw speed 5mm/ branch) to base material 2 and the light transparent member 3 that is under the engagement state.Before the laser irradiation that compares example, if the power will peel off the time is converted into stress, then below 0.5MPa.
If base material 2 and light transparent member 3 are immersed in the water, then water will be invaded between base material 2 and the light transparent member 3.
After irradiating laser, identical with pre-irradiation, bond strength is low to moderate the degree that is difficult to tolerate actual use.That is, in above-mentioned test method stress value below 0.5MPa.In addition, water can be invaded between base material 2 and the light transparent member 3.Patterned layer 4 produces printing ink and decomposes the also phenomenon of albefaction.This is to strengthen caused phenomenon by output power of laser.
2, embodiment 1
Intermediate member 5 is identical with comparative example with base material 2.
Laser is semiconductor laser, wavelength 808nm, power output 2W, sweep speed 0.6m/ branch.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and stress value is below 0.5MPa in above-mentioned test method.And water can be invaded between base material 2 and the light transparent member 3.
After irradiating laser, bond strength reaches the actual level of using of enough tolerances.Particularly, in above-mentioned test method stress value more than 1.2MPa.Bond strength more than 1.2MPa is promptly to use hand that base material 2 and light transparent member 3 are drawn back also to be difficult for the degree peeled off.
And water is not invaded base material 2 and light transparent member 3.Patterned layer 4 does not change.
3, embodiment 2
Intermediate member 5 is the acrylic compounds adhesive tape, and thickness is 100 μ m.This adhesive tape is Nitto Denko Corp's system, production code member No.5000NS.
Base material 2 is the sheet material of Merlon, and thickness is 2mm.Merlon is the ス テ ラ S300 In あ Ru of Mitsubishi Plastics Inc's system.
Laser is semiconductor laser, wavelength 808nm, power output 3W, sweep speed 0.6m/ branch.
Before irradiating laser, bond strength can obtain assurance to a certain degree, but water can be invaded between base material 2 and the light transparent member 3.
After irradiating laser, bond strength reaches the actual level of using of enough tolerances.Particularly, in above-mentioned test method stress value more than 1.0MPa.And water can not invaded between base material 2 and the light transparent member 3.The residual vestige that shone laser in the patterned layer 4, but to compare outward appearance more attractive in appearance with comparative example.
4, embodiment 3
Intermediate member 5 is to have mixed the parts that boron nitride (thermal conductivity filler) is made in the acrylic compounds hot-melt adhesive, and thickness is 50 μ m.Boron nitride is the product of ESK CERAMICS Co., Ltd. system, and average grain diameter is 2 μ m.The addition of boron nitride is 10 weight %.
Base material 2 is identical with comparative example.
Laser is semiconductor laser, wavelength 808nm, power output 3W, sweep speed 0.6m/ branch.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and stress value is below 0.5MPa in above-mentioned test method.And water can be invaded between base material 2 and the light transparent member 3.
After irradiating laser, bond strength reaches the actual level of using of enough tolerances.Particularly, in above-mentioned test method stress value more than 2.4MPa.Bond strength more than 2.4MPa is promptly to use hand that base material 2 and light transparent member 3 are drawn back, only otherwise apply the degree that very strong power just can not be peeled off.
Water can not invaded between base material 2 and the light transparent member 3.Patterned layer 4 does not change.
5, embodiment 4
Intermediate member 5 is for to have mixed the parts that near infrared ray absorption is made in the acrylic compounds hot-melt adhesive, thickness is 50 μ m.Near infrared ray absorption is the IR-13F of Showa Denko K. K's system.And the addition of near infrared ray absorption is 0.5 weight %.
Base material 2 is identical with comparative example.
Laser is semiconductor laser, wavelength 808nm, power output 3W, sweep speed 0.6m/ branch.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and stress value is below 0.5MPa in above-mentioned test method.And water can be invaded between base material 2 and the light transparent member 3.
After irradiating laser, bond strength reaches the actual level of using of enough tolerances.Particularly, in above-mentioned test method stress value more than 2.4MPa.And water can not invaded between base material 2 and the light transparent member 3.Patterned layer 4 does not change.
6, embodiment 5
Intermediate member 5 is for having mixed the parts that near infrared ray absorption is made in phenylethylene elastomer hot-melt adhesive.Particularly, 50 parts of SBS elastomers (the system TR-2601 of JSR Corp.), 50 parts of tackifier (the system TO-115 of ヤ ス Ha ラ ケ ミ カ Le Co., Ltd.), infrared absorbent (the system カ ヤ ソ one プ IGR-068 of Nippon Kayaku K. K) are dissolved in the toluene for 0.5 part, obtain solid constituent and be 40% solution, with the thickness of 100 μ m with this solution coat to the two sides of the PET film of thickness 25 μ m, make the two sides and have adhering two sides adhesion material.This material is intermediate member 5.In addition, the illuminate condition of laser is identical with embodiment 4 etc.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and stress value is below 0.5MPa in above-mentioned test method.And water can be invaded between base material 2 and the light transparent member 3.
After irradiating laser, bond strength reaches the actual level of using of enough tolerances.And water can not invaded between base material 2 and the light transparent member 3.Patterned layer 4 does not change.
7, embodiment 6
Intermediate member 5 contains and mixed the mixture that near infrared ray absorption forms in phenylethylene elastomer hot-melt adhesive.Particularly, 50 parts on styrene-isoprene-phenylethene elastomer (the system 5200P of JSR Corp.), 50 parts of tackifier (the system P-115 of ヤ ス Ha ラ ケ ミ カ Le Co., Ltd.), infrared absorbent (the system カ ヤ ソ one Block IGR-068 of Nippon Kayaku K. K) are dissolved in the toluene for 0.5 part, obtain solid constituent and be 40% solution, with the thickness of 100 μ m with this solution coat to the two sides of the PET film of thickness 25 μ m, make the two sides and have adhering two sides adhesion material.This material is intermediate member 5.In addition, the illuminate condition of laser is identical with embodiment 4 etc.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and stress value is below 0.5MPa in above-mentioned test method.And water can be invaded between base material 2 and the light transparent member 3.
After irradiating laser, bond strength reaches the actual level of using of enough tolerances.And water can not invaded between base material 2 and the light transparent member 3.Patterned layer 4 does not change.
-industrial applicability-
As described above described, use involved in the present invention the joint method of laser for example can be used in make used for cosmetic box, residential equipment with or the electric equipment products package member.

Claims (7)

  1. One kind with laser to the joint method that first parts with light transmission and second parts engage, it is characterized in that:
    In described first parts and described second parts, at least one parts is made by the material with laser-transmissible;
    The non-permeability patterned layer of laser is set so that pattern is presented on the outside of these first parts at least one parts in described first parts and described second parts;
    Between described first parts and second parts, be adjacent to laser that described patterned layer is provided for that described first parts and described second parts are engaged and engage and use intermediate member;
    Be used for this patterned layer is heated to the laser of the set point of temperature that becomes the fusion that is no more than this patterned layer or decomposition temperature from described parts one side with laser-transmissible towards described patterned layer irradiation, utilize the heat of this patterned layer to heat described intermediate member, described first parts and described second parts are engaged.
  2. 2. joint method according to claim 1 is characterized in that:
    Described intermediate member has the adhesiveness that sticks on described first parts and described second parts.
  3. 3. joint method according to claim 1 and 2 is characterized in that:
    Described intermediate member is by being made by the heat-fusible materials of the heat of described patterned layer institute fusion.
  4. 4. joint method according to claim 3 is characterized in that:
    Described heat-fusible materials is a thermoplastic elastomer (TPE).
  5. 5. joint method according to claim 3 is characterized in that:
    Described heat-fusible materials is the acrylic compounds heat-fusible materials.
  6. 6. according to each described joint method in the claim 1 to 5, it is characterized in that:
    Has the thermal conductivity filler in the described intermediate member.
  7. 7. according to each described joint method in the claim 1 to 6, it is characterized in that:
    Described intermediate member is configured in a side and the described patterned layer opposite with the laser direction of illumination of described patterned layer adjacent;
    Be mixed with the laser absorbent that absorbs laser in the described intermediate member.
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