JPH0365323A - Synthetic resin molded products and methods for manufacturing synthetic resin molded products - Google Patents
Synthetic resin molded products and methods for manufacturing synthetic resin molded productsInfo
- Publication number
- JPH0365323A JPH0365323A JP1202067A JP20206789A JPH0365323A JP H0365323 A JPH0365323 A JP H0365323A JP 1202067 A JP1202067 A JP 1202067A JP 20206789 A JP20206789 A JP 20206789A JP H0365323 A JPH0365323 A JP H0365323A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin molded
- core material
- parison
- molded products
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920003002 synthetic resin Polymers 0.000 title claims description 34
- 239000000057 synthetic resin Substances 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title description 8
- 239000011162 core material Substances 0.000 claims description 27
- 238000000071 blow moulding Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 11
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 229920005992 thermoplastic resin Polymers 0.000 description 8
- -1 polypropylene Polymers 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 206010016322 Feeling abnormal Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
- B29C49/4817—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity with means for closing off parison ends
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
- B29C2049/4805—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by closing the mould halves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は合成樹脂成形品及び合成樹脂成形品のブロー成
形による製造方法に関するものであり、特にアームレス
ト、ヘッドレスト等の自動車内装品として好適な合成樹
脂成形品及びその製造方法に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a synthetic resin molded product and a method for manufacturing the synthetic resin molded product by blow molding, and is particularly suitable for synthetic resin molded products for automobile interior parts such as armrests and headrests. This invention relates to resin molded products and their manufacturing methods.
（従来技術）
ブロー成形は製造工程及び型構造が簡単で大量生産が可
能であり、製造コストが安いため各種の合成樹脂成形品
の製造に広く応用されている。ブロー成形は初期におい
ては、熱可塑性樹脂の素材からなる単層の円筒状パリソ
ンを押出し、それを成形型で挟み内部に空気を吹き込む
ことによって行なわれていた。(Prior Art) Blow molding has a simple manufacturing process and mold structure, enables mass production, and has low manufacturing costs, so it is widely applied to the manufacture of various synthetic resin molded products. In the early days, blow molding was carried out by extruding a single-layer cylindrical parison made of thermoplastic resin, sandwiching it between molds, and blowing air into the inside.
しかし、ブロー成形による合成樹脂成形品としてアーム
レスト、ヘッドレスト等の自動車内装品を成形する時、
通常の単層のパリソンをもってしては成形品の表面が硬
過ぎ、手触りの悪いものとなる問題があった。However, when molding automobile interior parts such as armrests and headrests as synthetic resin molded products by blow molding,
When using a normal single-layer parison, the surface of the molded product is too hard and has a poor feel to the touch.
即ち、ブロー成形をもってアームレスト等を成形する場
合アームレスト等はひじ置きやドアの取手としての機能
を有する必要があることから十分な剛性が必要である。That is, when an armrest or the like is formed by blow molding, the armrest or the like needs to have sufficient rigidity because it needs to function as an elbow rest or a door handle.
そのため、ブロー成形の素材はその要求に足るものが選
定されるが、そのため成形品の表面は非常に硬いものと
なってしまう。Therefore, materials for blow molding are selected that meet these requirements, but the surface of the molded product is therefore extremely hard.
そのためブロー成形によってアーム１ノスト等を成形す
る場合は、前記した単層のパリソンにかわって予め内側
は剛性を保有する素材が配され、外側にソフト感を表出
する軟質の素材が一体的に融着積層されたパリソンを利
用してブロー成形を行なう工夫がなされている。Therefore, when molding arm 1 nost etc. by blow molding, instead of the single layer parison mentioned above, a rigid material is placed on the inside in advance, and a soft material that gives a soft feel is placed on the outside. An idea has been devised to perform blow molding using fused and laminated parisons.
（発明が解決しようとする課題）
前記した硬軟二種の素材が予め熱融着により一体的に積
層されたパリソンを使用してのブロー成形による剛性樹
脂成形品は、所定の剛性とソフト感を合わぜ持つと言う
点では申し分のないものである。(Problems to be Solved by the Invention) A rigid resin molded product made by blow molding using a parison in which the above-mentioned hard and soft materials are integrally laminated in advance by thermal fusion has a predetermined rigidity and soft feel. It is perfect in terms of having both.
しかし反面、従来の単層のパリソンを使用するブロー成
形にはなかった新たな欠点を有するものであった。However, on the other hand, it had new drawbacks that did not exist in conventional blow molding using a single-layer parison.
即ち、ブロー成形は円筒状のパリソンを成形型で挟んで
成形するものであるから、その成形型によって挟まれた
部分（喰切り部）にばりが発生する。また、パリソンの
形状を安定化するため通常パリソンは金型の長さはより
多少長めに押し出して使用される。従来これら喰切り部
のばリヤ余分のパリソンは成形品をトリム後粉砕され、
再び溶融してパリソン原料として再生利用されていた。That is, since blow molding is a process in which a cylindrical parison is sandwiched between molds, burrs are generated in the portions sandwiched by the molds (cut portions). Further, in order to stabilize the shape of the parison, the parison is usually extruded into a mold with a slightly longer length. Conventionally, the extra parison in these cut-out areas is crushed after trimming the molded product.
It was melted again and recycled as raw material for parisons.
しかし、前記した２層が予め熱融着により積層されたパ
リソンはあっては硬化後、両者を分離することができず
、それ改定再利用が困難で廃棄せさせるを得なかった。However, in the case of a parison in which the two layers mentioned above are laminated in advance by thermal fusion, it is impossible to separate the two layers after curing, and it is difficult to reuse and recycle the parison, making it impossible to dispose of the parison.
そのため、２層構造の合成樹脂成形品は原料が大巾に無
駄になり製造コストが高くなる欠点があった。Therefore, synthetic resin molded products with a two-layer structure have the disadvantage that a large amount of raw material is wasted and manufacturing costs are high.
そこで、本発明は従来抜術のかかる欠点に着目し、相当
の剛性と表面のソフト感を合わせ持ち、かつ原料の再利
用が可能である合成樹脂成形品および合成樹脂成形品の
製造方法を完成することを目的とする。Therefore, the present invention has focused on the drawbacks of conventional extraction methods, and has completed a synthetic resin molded product and a method for manufacturing a synthetic resin molded product that has both considerable rigidity and a soft surface feel, and allows for the reuse of raw materials. The purpose is to
（課題を解決するための手段）
しかして、上記の目的を達成するための本発明の特徴は
、１つには芯材と該芯材の全面を覆う表皮より構成され
、芯材と表皮は互いに熱融着り、にくい合成樹脂を素材
とし、分離可能であり、外形には凹状又は凸状の嵌合部
をもって芯材と表皮体が機械的に結合されてなる合成樹
脂成形品にある。(Means for Solving the Problems) One of the features of the present invention for achieving the above object is that it is composed of a core material and an outer skin covering the entire surface of the core material, and the core material and the outer skin are It is a synthetic resin molded product that is made of a synthetic resin that does not heat-fuse with each other, is separable, and has a core material and a skin material mechanically joined to each other by having a concave or convex fitting portion on the outside.
そして、本発明の今１つの特徴は、相互茫然融着しにく
い合成樹脂素材が積層されたパリソンを押し出し、該パ
リソンを凸状あるいは凹状の嵌合部形成部材を有する成
形型で挟んでブロー成形することを特徴とする合成樹脂
成形品の製造方法にある。Another feature of the present invention is to extrude a parison in which synthetic resin materials that are difficult to fuse together are laminated, and blow mold the parison by sandwiching it between molds having convex or concave fitting portion forming members. A method of manufacturing a synthetic resin molded article is provided.
本発明の合成樹脂成形品は、互いに熱融着しにくい合成
樹脂が積層されたパリソンを用いてブロー成形されたも
のであるため、その製造過程で生ずる喰切り部や余分な
パリソンは、パリソンの冷却固化後においても積層され
た合成樹脂同志が接着していない。そのため、表面側の
樹脂と内面側の樹脂を容易に分離することができ、それ
ぞれ粉砕して再生利用することができる。The synthetic resin molded product of the present invention is blow-molded using a parison made of laminated synthetic resins that are difficult to heat-fuse with each other, so the cut-out portions and excess parison that occur during the manufacturing process are removed from the parison. Even after cooling and solidifying, the laminated synthetic resins do not adhere to each other. Therefore, the resin on the front surface side and the resin on the inner surface side can be easily separated, and each can be crushed and recycled.
また、本発明の合成樹脂成形品の外形形状に設けられた
凹状又は凸状の嵌合部によって内側のパリソン層即ち硬
化後に芯材となる層こ外側の層、すなわち硬化後は表皮
となる層が入り込み状に嵌合し両者を機械的に結合させ
る。Furthermore, the concave or convex fitting portions provided in the external shape of the synthetic resin molded product of the present invention allow the inner parison layer, that is, the layer that will become the core material after hardening, and the outer layer, that is, the layer that will become the skin after hardening. are fitted into each other to mechanically connect the two.
そのため、本発明の合成樹脂成形品は、芯材と表皮は熱
融着していないが一体的に密着して固着される。Therefore, in the synthetic resin molded product of the present invention, the core material and the skin are not heat-sealed, but are integrally adhered to each other.
（実施例） 以下、更じ本発明の具体的実施例し＝ついて説明する。(Example) Hereinafter, specific embodiments of the present invention will be further described.
第１図は、本発明の具体的実施例における合成樹脂成形
品の斜視図であり、第２図、第３図、第４図はそれぞれ
第１図のＡ−Ａ、 Ｂ−Ｂ、 Ｃ−Ｃ断面図であり、第
５図は第１図のＤ方向部分矢祝図であり、第６図は本発
明の具体的実施例はおける合成樹脂成形品の製造方法を
示すブロー成形装置及び成形型の断面図であり、そして
第７図は本発明の具体的実施例はおいて使用するパリソ
ンの部分拡大断面図である。FIG. 1 is a perspective view of a synthetic resin molded product in a specific embodiment of the present invention, and FIGS. 2, 3, and 4 are AA, BB, and C- in FIG. 1, respectively. FIG. 5 is a cross-sectional view of C in the D direction of FIG. FIG. 7 is a cross-sectional view of a mold, and FIG. 7 is a partially enlarged cross-sectional view of a parison used in a specific embodiment of the present invention.
第１図より第５図において（１）は本発明の具体的実施
例における合成樹脂成形品を示す、本実施例の合成樹脂
成形品（１）は具体的には自動車用アームレストであり
、芯材（２）とこの芯材（２）の全面を覆う表皮（３）
より構成されている。芯材（２）はポリプロピレン（Ｐ
Ｐ）樹脂、ポリエチレン（ＰＥ）樹脂、ナイロン（ＰＡ
）樹脂、その他の熱可塑性樹脂を素材とし相当の剛性を
具備させたものである。In FIGS. 1 to 5, (1) shows a synthetic resin molded product in a specific example of the present invention. Specifically, the synthetic resin molded product (1) of this example is an armrest for an automobile, and the core A skin (3) that covers the entire surface of the material (2) and this core material (2)
It is composed of The core material (2) is polypropylene (P
P) Resin, polyethylene (PE) resin, nylon (PA)
) resin or other thermoplastic resin and has considerable rigidity.
表皮（３）は軟質塩化ビニル樹脂、ポリスチレンエラス
トマー、その他の芯材（２）の素材と熱融着しないソフ
ト感のある熱可塑性樹脂を素材とするものである。合成
樹脂成形品（１）の外形は、通常のグリップ部（４）、
灰皿挿入部（５）である凹部を有する他、乗員側の側面
の全周にわたって凹状の溝状嵌合部（６）を有し、乗員
側側面の中程には２つの取付孔嵌合部（７）が下側には
２つの丸孔状嵌合部（８）が請けられグリップ部（４）
の内側の角にも丸孔状嵌合部（９）が設けられている。The outer skin (3) is made of soft vinyl chloride resin, polystyrene elastomer, or other soft-feeling thermoplastic resin that does not thermally fuse with the core material (2). The external shape of the synthetic resin molded product (1) is a normal grip part (4),
In addition to having a recessed part for the ashtray insertion part (5), it also has a recessed groove-like fitting part (6) around the entire circumference of the side surface on the passenger side, and two mounting hole fitting parts in the middle of the side surface on the passenger side. (7) has two round hole-shaped fitting parts (8) on the lower side and a grip part (4).
A round hole-shaped fitting part (9) is also provided at the inner corner of.
芯材（２）と表皮（３）は接着材や熱融着によっては実
際上接着されておらず、両者は分離可能である。しかし
、表皮（２）は取付用の貫通部（１０）等の例外を除い
て芯材の全周を覆っており、前記した溝上嵌合部（６）
、取付孔嵌合部（７）、丸孔状嵌合部（８） （９）に
よって両者は嵌合し、更にグリップ部（４）や灰皿挿入
部（５）の凹部においても嵌合部の作用をし、アームレ
ストとして使用するにあたっては全く支障のない程度に
両者は機械的に結合されている。The core material (2) and the skin (3) are not actually bonded together by adhesive or heat fusion, and can be separated. However, the skin (2) covers the entire circumference of the core material except for the penetration part (10) for attachment, and the above-mentioned groove fitting part (6)
, the mounting hole fitting part (7) and the round hole fitting part (8) (9), and the fitting part is also fitted in the recess of the grip part (4) and the ashtray insertion part (5). The two are mechanically coupled to such an extent that there is no problem at all when using the armrest as an armrest.
次に本発明の合成樹脂成形品の製造方法の具体的実施例
について説明する。Next, specific examples of the method for manufacturing a synthetic resin molded article of the present invention will be described.
第６図は前記したようにブロー成形装置及び成形型の断
面図であり、先ずその構成について概略説明すると（２
０）はブロー成形装置であり、（２１）（２２）は押出
機、（２３） （２４）はアキュムレータ、（２５）は
ダイであり、（２６）は成形型である。FIG. 6 is a cross-sectional view of the blow molding device and the mold as described above, and the structure will first be briefly explained (2
0) is a blow molding device, (21) and (22) are extruders, (23) and (24) are accumulators, (25) is a die, and (26) is a mold.
上記したようにブロー成形装置（２０）はそれぞれ２つ
の押出機（２１）（２２）、アキュムレータ（２３）
（２４）を持ち、一方の押出機（２１）、アキュムレー
タ（２３）はタイ（２５）の内側の溝（２７）に接続さ
れ、他方の押出機（２２）、アキュムレータ（２４）は
ダイ（２５）の外側の溝（２８）に接続されている。成
形型（２６）は通常のブロー成型型としての機能を備え
る他、成製品の表面に嵌合部となる凹凸を設けるための
凸状の嵌合部形成部材（２９）を有する。本実施例にお
いてはダイ（２５）の内側の溝（２７）に通じる押出機
（２１）に芯材となるポリエチレン、ポリプロピレン、
ナイロン樹脂、ＡＢＳ樹脂、その他ある程度剛性を有す
る配合の熱可塑性樹脂を投入する。As mentioned above, each blow molding device (20) has two extruders (21) (22) and an accumulator (23).
(24), one extruder (21) and accumulator (23) are connected to the groove (27) inside the tie (25), and the other extruder (22) and accumulator (24) are connected to the die (25). ) is connected to the outer groove (28). The mold (26) not only functions as a normal blow molding mold, but also has a convex fitting part forming member (29) for providing unevenness that will become a fitting part on the surface of the finished product. In this embodiment, polyethylene, polypropylene, which becomes a core material,
Nylon resin, ABS resin, and other thermoplastic resins with a certain degree of rigidity are added.
他方、押出機（２２）には先の芯材となる熱可塑性樹脂
とは熱融着しにくい熱可塑性樹脂、例えば芯材がポリエ
チレン樹脂、ポリプロピレン樹脂に対して軟質塩化ビニ
ル樹脂を投入する。押出機（２２）に投入する熱可塑性
樹脂は成型後には表皮となるのである程度軟質のもので
あることが好ましく、また芯材との密着性を良好とする
ため膨張率、成形収縮率の近似したものを選定すること
が望ましい。そして、両押出機（２１） （２２）、ア
キュムレータ（２３） （２４）を作動して二層構造の
パリソン（３０）を押し出す。パリソン（３０）は第７
図のように一応２層が積層された構成ではあるが、該２
層は互いに引き剥がすことができる。そして、パリソン
（３０）を成形型（２６）ではさみ、公知のブロー成形
の工程に従って合成樹脂成形品を成形する。この時成形
型（２６）の喰切り部やパリソンの端部が不要部分とし
て切り残る。On the other hand, the extruder (22) is charged with a thermoplastic resin that is difficult to heat-seal with the thermoplastic resin that will serve as the core material, for example, a soft vinyl chloride resin as opposed to polyethylene resin or polypropylene resin as the core material. The thermoplastic resin to be fed into the extruder (22) will become a skin after molding, so it is preferable that it be soft to some extent, and in order to have good adhesion to the core material, it is preferable that the thermoplastic resin has a similar expansion coefficient and mold shrinkage ratio. It is desirable to select the Then, both extruders (21) (22) and accumulators (23) (24) are operated to extrude a two-layered parison (30). Parison (30) is the 7th
As shown in the figure, it has a structure in which two layers are laminated, but the two
The layers can be peeled away from each other. Then, the parison (30) is sandwiched between molds (26), and a synthetic resin molded article is molded according to a known blow molding process. At this time, the cutout portion of the mold (26) and the end portion of the parison remain as unnecessary portions.
この不要部分は冷却固化後に二層を引き剥がし、それぞ
れ粉砕して押出機（２１）（２２）に投入して再利用す
ることができる。After cooling and solidifying, this unnecessary portion can be reused by peeling off the two layers, pulverizing each layer, and feeding it into the extruder (21) (22).
（効果）
本発明の合成樹脂成形品は、芯材の全面が芯材と熱融着
しにくい表面で覆われ、且つ嵌合部によつ機械的に芯材
と表皮が結合されている。そのため芯材と表皮の結合は
強固である。(Effects) In the synthetic resin molded product of the present invention, the entire surface of the core material is covered with a surface that is difficult to heat-seal with the core material, and the core material and the skin are mechanically bonded to each other by the fitting portion. Therefore, the bond between the core material and the skin is strong.
そして、本発明の合成樹脂成形品はブロー成形によって
単一工程で芯材と表皮が結合した構成を成形することが
できる効果があり、更にブロー成形の際に発生する喰切
り部や余分なパリソンを再生利用することができ、原材
料の無駄を省き有効利用を図ることができる効果がある
。Furthermore, the synthetic resin molded product of the present invention has the effect of being able to mold a structure in which the core material and the skin are combined in a single process by blow molding, and also has the advantage of being able to mold a structure in which the core material and the skin are combined in a single process. can be recycled, which has the effect of eliminating waste and effectively using raw materials.
第１図は本発明の具体的実施例における合成樹脂成形品
の斜視図であり、第２図、第８図、第４図はそれぞれ第
１図のＡ−Ａ、 Ｂ−Ｂ、 Ｃ−Ｃ拡大断面図であり、
第５図は第１図のＤ方向矢視図であり、第６図は本発明
の具体的実施例における合成樹脂成形品の製造方法を示
すブロー成形装置および成形型の断面図であり、第７図
は本発明の具体的実施例において使用するパリソンの部
分拡大断面図である。
（１）・・・合成樹脂成形品
（２）・・・芯材
（３）・・・表皮
（４）・・・グリップ
（５）・・・灰皿挿入部
（６）・・・溝状嵌合部
（７）・・・取付孔嵌合部
（８）（９）・・・丸孔状嵌合部
（２０）・・・ブロー成形装置
（２６）・・・成形型
（３０）・・・パリソンFIG. 1 is a perspective view of a synthetic resin molded product in a specific embodiment of the present invention, and FIGS. 2, 8, and 4 are A-A, B-B, and C-C in FIG. 1, respectively. It is an enlarged sectional view,
FIG. 5 is a view taken in the direction of arrow D in FIG. 1, and FIG. 6 is a sectional view of a blow molding apparatus and a mold showing a method for manufacturing a synthetic resin molded product in a specific embodiment of the present invention. FIG. 7 is a partially enlarged sectional view of a parison used in a specific embodiment of the present invention. (1)...Synthetic resin molded product (2)...Core material (3)...Skin (4)...Grip (5)...Ashtray insertion part (6)...Groove fit Joint part (7)...Mounting hole fitting part (8) (9)...Round hole fitting part (20)...Blow molding device (26)...Mold (30)...・Parison
Claims (1)
と表皮は互いに熱融着しにくい合成樹脂を素材とし、分
離可能であり外形には凹状又は凸状の嵌合部を有し、該
嵌合部をもつて芯材と表皮が機械的に結合されてなるこ
とを特徴とする合成樹脂成形品。 ２、相互に熱融着しにくい合成樹脂素材が積層されたパ
リソンを押出し、該パリソンを凸状あるいは凹状の嵌合
部形成部材を有する成形型で挟んでブロー成形すること
を特徴とする合成樹脂成形品の製造方法。[Claims] 1. Consisting of a core material and a skin covering the entire surface of the core material, the core material and skin are made of synthetic resin that is difficult to heat-fuse to each other, are separable, and have a concave or convex outer shape. 1. A synthetic resin molded product, characterized in that it has a shaped fitting part, and a core material and a skin are mechanically connected by the fitting part. 2. Synthetic resin characterized by extruding a parison made of laminated synthetic resin materials that are difficult to thermally fuse with each other, and sandwiching the parison between molds having convex or concave fitting portion forming members for blow molding. Method of manufacturing molded products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20206789A JP2691227B2 (en) | 1989-08-02 | 1989-08-02 | Synthetic resin molded product and method for producing synthetic resin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20206789A JP2691227B2 (en) | 1989-08-02 | 1989-08-02 | Synthetic resin molded product and method for producing synthetic resin molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0365323A true JPH0365323A (en) | 1991-03-20 |
| JP2691227B2 JP2691227B2 (en) | 1997-12-17 |
Family
ID=16451400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20206789A Expired - Lifetime JP2691227B2 (en) | 1989-08-02 | 1989-08-02 | Synthetic resin molded product and method for producing synthetic resin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2691227B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0620144U (en) * | 1992-04-10 | 1994-03-15 | 理研精工株式会社 | Automotive roof rack |
| US5851624A (en) * | 1995-08-31 | 1998-12-22 | Chrysler Corporation | Soft touch top cover and method of manufacturing |
| CN101733886B (en) | 2008-11-13 | 2012-07-25 | 明安国际企业股份有限公司 | Method of making a composite workpiece having barbs |
-
1989
- 1989-08-02 JP JP20206789A patent/JP2691227B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0620144U (en) * | 1992-04-10 | 1994-03-15 | 理研精工株式会社 | Automotive roof rack |
| US5851624A (en) * | 1995-08-31 | 1998-12-22 | Chrysler Corporation | Soft touch top cover and method of manufacturing |
| CN101733886B (en) | 2008-11-13 | 2012-07-25 | 明安国际企业股份有限公司 | Method of making a composite workpiece having barbs |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2691227B2 (en) | 1997-12-17 |
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