JP2609697B2 - Welding method for synthetic resin moldings - Google Patents
Welding method for synthetic resin moldingsInfo
- Publication number
- JP2609697B2 JP2609697B2 JP23258388A JP23258388A JP2609697B2 JP 2609697 B2 JP2609697 B2 JP 2609697B2 JP 23258388 A JP23258388 A JP 23258388A JP 23258388 A JP23258388 A JP 23258388A JP 2609697 B2 JP2609697 B2 JP 2609697B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin molded
- cover
- welding
- molded product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
- B29C65/0672—Spin 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
-
- 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
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
- B29C65/069—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding the welding tool cooperating with specially formed features of at least one of the parts to be joined, e.g. cooperating with holes or ribs of at least one 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
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
- B29C66/7316—Surface properties
- B29C66/73161—Roughness or rugosity
-
- 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
-
- 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
- B29L2022/00—Hollow articles
- B29L2022/005—Hollow articles having dividing walls, e.g. additional elements placed between object parts
Description
【発明の詳細な説明】 《産業上の利用分野》 この発明は合成樹脂成形品の接着方法に関し、特に、
成形品の開口端に薄板状のゴムなどの可撓性部材を挾持
させて溶着する方法に関する。The present invention relates to a method for bonding synthetic resin molded articles,
The present invention relates to a method in which a thin plate-shaped flexible member such as rubber is sandwiched and welded to an open end of a molded product.
《従来の技術》 周知のように、近時の自動車においては、燃比対策か
ら種々の搭載部品の軽量化が促進され、例えば、第２図
に示す如きプライミングポンプを備えた燃料フィルタに
あってもその対策が施されている。<< Prior Art >> As is well known, in recent automobiles, weight reduction of various mounted parts has been promoted due to measures against fuel ratio. For example, even in a fuel filter including a priming pump as shown in FIG. The measures are taken.
同図に示す燃料フィルタでは、燃料を濾過するフィル
タエレメント１の前流側に一対の逆止弁2,3を介装し、
バルブケース４とカバー５との間に挾持された薄板状の
ダイヤフラム６を把手７によって上下動させることで逆
止弁2,3を交互に開弁させて、燃料をフィルタエレメン
ト１側に送り込むようにしている。In the fuel filter shown in the figure, a pair of check valves 2 and 3 are interposed on the upstream side of a filter element 1 for filtering fuel.
The check valves 2 and 3 are alternately opened by moving the thin plate-shaped diaphragm 6 held between the valve case 4 and the cover 5 up and down by the handle 7 so that the fuel is sent to the filter element 1 side. I have to.
このような構造の燃料フィルタでは、ダイヤフラム６
を挾持したバルブケース４とカバー５との開口端同士の
接合部分は、逆止弁2,3の確実つな作動を確保し燃料洩
れを防ぐためには、十分な液密，気密性が要求される。In the fuel filter having such a structure, the diaphragm 6
The joint between the open ends of the valve case 4 and the cover 5 holding the valve is required to have sufficient liquid tightness and air tightness in order to ensure the reliable operation of the check valves 2 and 3 and prevent fuel leakage. It
ところで、このような構造の燃料フィルタを軽量化す
るために、フィルタボデー８だけでなくバルブケース4,
カバー５の合成樹脂化が検討されており、これらの部品
を合成樹脂化した場合に、ケース４とカバー５との間に
ダイヤフラム６を挾持して接合する方法としては、従来
から超音波溶着が用いられている。By the way, in order to reduce the weight of the fuel filter having such a structure, not only the filter body 8 but also the valve case 4,
The cover 5 is considered to be made of synthetic resin, and when these parts are made of synthetic resin, ultrasonic welding has conventionally been used as a method for sandwiching and joining the diaphragm 6 between the case 4 and the cover 5. Used.
第３図は、バルブケース４とカバー５との間にダイヤ
フラム６を挾持させた状態で、これらの開口端同士を超
音波溶着する場合の具体例を示している。FIG. 3 shows a specific example of the case where the diaphragm 6 is sandwiched between the valve case 4 and the cover 5 and the open ends of these are ultrasonically welded to each other.
同図に示す例では、バルブケース４を固定枠Ａに嵌合
して固定するとともに、カバー５に可動枠Ｂを嵌着して
回動可能に載置し、可動枠Ｂを図外の超音波発生源で上
下方向に振動させることにより、バルブケース２とカバ
ー５との接合面に摩擦熱を発生させ、この熱で合成樹脂
を軟化ないしは溶融させることで、相互に溶着する。In the example shown in the figure, the valve case 4 is fitted and fixed to the fixed frame A, and the movable frame B is fitted to the cover 5 so as to be rotatably mounted. By vibrating in the vertical direction by the sound wave source, frictional heat is generated at the joint surface between the valve case 2 and the cover 5, and the synthetic resin is softened or melted by this heat, so that the synthetic resins are welded to each other.
しかしながら、このような溶着方法には、以下に説明
する技術的課題があった。However, such a welding method has a technical problem described below.
《発明が解決しようとする課題》 すなわち、上述した如き超音波による溶着方法では、
カバー５を微細な振幅で振動させて溶着するので、十分
な接着強度が得られず、特に樹脂材料として耐衝撃性に
優れたナイロン６等を用いた場合にその傾向が顕著にな
るという問題があった。<< Problems to be Solved by the Invention >> That is, in the welding method using ultrasonic waves as described above,
Since the cover 5 is welded by vibrating at a minute amplitude, sufficient adhesion strength cannot be obtained, and the tendency becomes remarkable particularly when nylon 6 or the like having excellent impact resistance is used as a resin material. there were.
このような問題に対して、例えば、カバー５を回転さ
せるか、あるいは、かなり大きな振幅で揺動回転させる
ことで溶着する方法が考えられるが、このような溶着方
法を採用するとダイヤフラム６に損傷を与えるという問
題がある。To solve such a problem, for example, a method of welding by rotating the cover 5 or oscillating and rotating with a considerably large amplitude can be considered. However, if such a welding method is adopted, the diaphragm 6 is damaged. There is a problem of giving.
この発明は、このような従来の問題点に鑑みてなされ
たものであって、その目的とすると、挾持される可撓性
部材に損傷を与えることなく、十分な接着強度が得られ
る合成樹脂成形品の溶着方法を提供することにある。The present invention has been made in view of such conventional problems, and an object thereof is a synthetic resin molding capable of obtaining sufficient adhesive strength without damaging a held flexible member. An object of the present invention is to provide a method for welding articles.
《課題を解決するための手段》 上記目的を達成するために、本発明は、一対の合成樹
脂成形品の接合面間にゴム等の薄板状可撓性部材を挾持
させて溶着する方法において、一方の合成樹脂成形品を
固定するとともに、他方の合成樹脂成形品を回転可能に
支持し、且つ、前記可撓性部材の端縁を固定側の合成樹
脂成形品に固定する合成樹脂スペーサを前記接合面に介
装し、前記他方の合成樹脂成形品を一方向に回転若しく
は揺動回転させることを特徴とする。<< Means for Solving the Problems >> In order to achieve the above object, the present invention is a method of sandwiching and welding a thin plate-shaped flexible member such as rubber between the joint surfaces of a pair of synthetic resin molded products, A synthetic resin spacer for fixing one synthetic resin molded product, rotatably supporting the other synthetic resin molded product, and fixing an edge of the flexible member to the synthetic resin molded product on the fixed side. It is characterized in that it is interposed on the joint surface and the other synthetic resin molded article is rotated or oscillated in one direction.
《作 用》 上記構成の溶着方法によれば、固定された合成樹脂成
形品に体して、他方の成形品を回転若しくは揺動回転す
ることにより、相互に対接した接合面には大きな摩擦熱
が発生し、これらを強固に溶着させる。<Operation> According to the welding method with the above configuration, the fixed synthetic resin molded product is mounted, and the other molded product is rotated or oscillated to cause a large friction on the joint surfaces that are in contact with each other. Heat is generated and these are firmly welded.
このとき、接合面には可撓性部材を固定側の合成樹脂
成形品に固定する合成樹脂スペーサが介装されているの
で、可撓性部材の損傷が回避される。At this time, since a synthetic resin spacer for fixing the flexible member to the synthetic resin molded product on the fixed side is interposed on the joint surface, damage to the flexible member is avoided.
《実施例》 以下、この発明の好適な実施例について添附図面を参
照にして詳細に説明する。Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図は、この発明に係る合成樹脂成形品の溶着方法
の一実施例を示している。FIG. 1 shows an embodiment of a method for welding a synthetic resin molded product according to the present invention.
同図に示す溶着方法は、相互に溶着される一対の合成
樹脂成形品として、ともに同じ合成樹脂で成形された燃
料フィルタのプライミングポンプ部のバルブケース10と
カバー12とを相互に溶着する場合を示しており、ケース
10とカバー12との接合面間にはゴム製のダイヤフラム14
が挾持させられる。The welding method shown in the figure is a case in which a valve case 10 and a cover 12 of a priming pump section of a fuel filter both formed of the same synthetic resin are mutually welded as a pair of synthetic resin molded articles which are welded to each other. Shows and case
A rubber diaphragm 14 is provided between the joining surfaces of the cover 10 and the cover 12.
Is held.
バルブケース10は、上端が開口した円形断面のコップ
状に成形され、その開口端10aの内周側には、環状の段
部10bと凹状の環状溝10cとが一体に形成されているとと
もに、段部19bの側面には切欠部10dが凹設されている。The valve case 10 is formed into a cup shape having a circular cross section with an open upper end, and an annular step portion 10b and a concave annular groove 10c are integrally formed on the inner peripheral side of the open end 10a, A notch 10d is provided on the side surface of the stepped portion 19b.
カバー12は、下端が開口した円形断面のキャップ状に
成形され、その開口端12aの上面には突起12bが一体に形
成されている。The cover 12 is formed in a cap shape having a circular cross section with an open lower end, and a projection 12b is integrally formed on the upper surface of the open end 12a.
バルブケース10は、その外周に固定枠16を嵌着して固
定支持されている。The valve case 10 is fixedly supported by fitting a fixed frame 16 to an outer periphery thereof.
カバー12は、その外周に上記突起12bと嵌合する廻り
止め用の凹溝18aを備えた回転枠18が嵌着され、開口端1
2aがバルブケース10側の開口端10aと対接するようにし
て回転可能に配置される。The cover 12 is fitted with a rotating frame 18 having a detent groove 18a for preventing rotation which fits with the projection 12b on the outer periphery thereof.
2a is rotatably arranged so as to be in contact with the opening end 10a on the valve case 10 side.
そして、バルブケース10とカバー12とを溶着するとき
には、まず、バルブケース10の環状溝10c内に、ダイヤ
フラム14の端縁が嵌着され、ダイヤフラム14の上面側に
ケース10およびカバー12と同じ合成樹脂で構成されたリ
ング状のスペーサ20が段部10bに嵌着される。Then, when welding the valve case 10 and the cover 12, first, the end edge of the diaphragm 14 is fitted into the annular groove 10c of the valve case 10, and the same composition as the case 10 and the cover 12 is formed on the upper surface side of the diaphragm 14. A ring-shaped spacer 20 made of resin is fitted to the step portion 10b.
この時、スペーサ20の外周面には、突起20aが突設さ
れているので、この突起20aを切欠部10dに嵌合させるよ
うにして嵌着される。At this time, since the protrusion 20a is provided on the outer peripheral surface of the spacer 20, the protrusion 20a is fitted into the notch 10d.
なお、スペーサ10の厚みは、これを段部10bに嵌着し
たときに、バルブケース10の開口端10aの上面と面一に
なるように設定されている。The thickness of the spacer 10 is set so as to be flush with the upper surface of the open end 10a of the valve case 10 when the spacer 10 is fitted to the step portion 10b.
以上のように、ダイヤフラム14およびスペーサ20がセ
ットされると、回転枠18が図外の回転駆動装置により回
転駆動させられる。When the diaphragm 14 and the spacer 20 are set as described above, the rotary frame 18 is rotationally driven by a rotary drive device (not shown).
この場合の回転は、一方向のみの回転あるいは左，右
方向の揺動回転のいずれでもよく、一方向の回転では11
00〜1500r.p.m.、揺動回転では120Hz程度の周波数ない
しは１〜5mmのストロークで行われる。In this case, the rotation may be rotation in only one direction or swing rotation in the left or right direction.
The rotation is performed at a frequency of about 120 Hz or a stroke of 1 to 5 mm in the swing rotation.
回転枠18が回転させられると、カバー12もこれに伴っ
て回転し、ケース10とカバー12との開口端10a,12a同士
の接合面および開口端12aとスペーサ20との接合面に、
それぞれ摩擦熱が発生し、これらの接合面を溶融させて
相互に溶着させる。When the rotating frame 18 is rotated, the cover 12 also rotates with this, and the joining surface between the opening ends 10a and 12a of the case 10 and the cover 12 and the joining surface between the opening end 12a and the spacer 20,
Friction heat is generated in each, and these joint surfaces are melted and welded to each other.
本発明者らの実験によると、バルブケース10,カバー1
2,スペーサ20の合成樹脂材料として、それぞれナイロン
６を用い、1300r.p.mの一方向の回転で溶着させたとき
の破壊強度が18kg/cm2、ストロークが2mmの揺動回転で
溶着させたときの破壊強度が21kg/cm2、出力1500w、周
波数15.15KHzの超音波で溶着させたときの破壊強度が10
kg/cm2であって、本発明の方法ではいずれも超音波溶着
による方法よりも、大きな溶着強度が得られた。According to the experiments conducted by the present inventors, the valve case 10 and the cover 1
2. Nylon 6 is used as the synthetic resin material for the spacers 20, respectively, and the fracture strength is 18 kg / cm 2 when it is welded in one direction rotation of 1300 rpm, and the stroke is 2 mm when it is welded by oscillating rotation. Has a breaking strength of 21 kg / cm 2 , an output of 1500 watts, and a frequency of 15.15 KHz.
kg / cm 2 , and the method of the present invention obtained a higher welding strength than the method using ultrasonic welding.
なお、上記破壊強度は、バルブケース10,カバー12内
に圧縮空気を送り込み、接合面が破壊されたときの空気
圧を破壊強度とした。In addition, the above-mentioned breaking strength was defined as breaking pressure when compressed air was sent into the valve case 10 and the cover 12 and the air pressure when the joint surface was broken.
また、上記溶着方法は、ダイヤフラム14の上面は、ス
ペーサ20でカバーされているので、溶着時の摩擦熱や回
転力がダイヤフラム14に直接作用せず、これらの影響に
よる損傷を効果的に防止できる。Further, in the above welding method, since the upper surface of the diaphragm 14 is covered with the spacer 20, frictional heat and rotational force during welding do not directly act on the diaphragm 14, and damage due to these influences can be effectively prevented. .
なお、上記実施例では、スペーサ20の共廻りを防止す
るため、突起20aと切欠部10dの凹凸嵌合を例示したが、
本発明の実施はこれに限定されることはなく、例えば、
ダイヤフラム14とスペーサ20との接合面を粗面化させ
て、相互の摩擦を利用する方法であってもよい。In the above-described embodiment, the protrusions 20a and the notches 10d are illustrated as fitting concave and convex in order to prevent the spacers 20 from rotating together.
The implementation of the present invention is not limited to this, and for example,
A method may be used in which the joining surface between the diaphragm 14 and the spacer 20 is roughened to utilize mutual friction.
また、上記実施例では樹脂成形品の一例として、燃料
フィルタのバルブケース10とカバー12とを掲示したが、
他の成形品でも本発明を適用できる。In the above embodiment, the valve case 10 and the cover 12 of the fuel filter are posted as an example of the resin molded product.
The present invention can be applied to other molded products.
《発明の効果》 以上、実施例で詳細に説明したように、本発明に係る
樹脂成形品の溶着方法によれば、成形品間に挾持される
可撓性部材に損傷を与えることなく、大きな溶着強度が
得られる。<< Effects of the Invention >> As described above in detail with reference to the embodiments, according to the method for welding a resin molded product according to the present invention, the flexible member held between the molded products is not damaged, and a large The welding strength is obtained.
第１図は本発明方法の一実施例を示す要部断面説明、第
２図は本発明方法が適用される樹脂成形品の一例を示す
断面図、第３図は従来方法の実施状態の説明図である。 10……バルブケース（合成樹脂成形品） 12……ケース（合成樹脂成形品） 14……ダイヤフラム（可撓性部材） 16……固定枠 18……回転枠 20……スペーサFIG. 1 is a cross-sectional view of an essential part showing an embodiment of the method of the present invention, FIG. 2 is a cross-sectional view of an example of a resin molded product to which the method of the present invention is applied, and FIG. It is a figure. 10: Valve case (synthetic resin molded product) 12: Case (synthetic resin molded product) 14: Diaphragm (flexible member) 16: Fixed frame 18: Rotating frame 20: Spacer
Claims (1)
の薄板状可撓性部材を挾持させて溶着する方法におい
て、 一方の合成樹脂成形品を固定するとともに、他方の合成
樹脂成形品を回転可能に支持し、且つ、前記可撓性部材
の端縁を固定側の合成樹脂成形品に固定する合成樹脂ス
ペーサを前記接合面に介装し、前記他方の合成樹脂成形
品を一方向に回転若しくは揺動回転させることを特徴と
する合成樹脂成形品の溶着方法。1. A method of welding a thin plate-like flexible member such as rubber between two joining surfaces of a pair of synthetic resin molded articles, wherein one of the synthetic resin molded articles is fixed and the other synthetic resin molded article is fixed. A synthetic resin spacer that rotatably supports the product and that fixes the edge of the flexible member to the fixed-side synthetic resin molded product is interposed on the joint surface, and the other synthetic resin molded product is 1. A method for welding a synthetic resin molded product, which comprises rotating or swinging in a direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23258388A JP2609697B2 (en) | 1988-09-19 | 1988-09-19 | Welding method for synthetic resin moldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23258388A JP2609697B2 (en) | 1988-09-19 | 1988-09-19 | Welding method for synthetic resin moldings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0280228A JPH0280228A (en) | 1990-03-20 |
| JP2609697B2 true JP2609697B2 (en) | 1997-05-14 |
Family
ID=16941630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23258388A Expired - Lifetime JP2609697B2 (en) | 1988-09-19 | 1988-09-19 | Welding method for synthetic resin moldings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2609697B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2789108B2 (en) * | 1989-05-19 | 1998-08-20 | エヌオーケー株式会社 | How to join resin parts |
| JPH06135280A (en) * | 1992-10-28 | 1994-05-17 | Hayashi Gijutsu Kenkyusho:Kk | Method of applying pad material to carpet |
-
1988
- 1988-09-19 JP JP23258388A patent/JP2609697B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0280228A (en) | 1990-03-20 |
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