JPS6240176B2 - - Google Patents
Info
- Publication number
- JPS6240176B2 JPS6240176B2 JP22971983A JP22971983A JPS6240176B2 JP S6240176 B2 JPS6240176 B2 JP S6240176B2 JP 22971983 A JP22971983 A JP 22971983A JP 22971983 A JP22971983 A JP 22971983A JP S6240176 B2 JPS6240176 B2 JP S6240176B2
- Authority
- JP
- Japan
- Prior art keywords
- parison
- skin
- molds
- molded product
- lid
- 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
Links
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 4
- 238000007666 vacuum forming Methods 0.000 claims description 3
- 210000003491 skin Anatomy 0.000 description 39
- 238000000071 blow moulding Methods 0.000 description 11
- 239000011162 core material Substances 0.000 description 11
- 210000002615 epidermis Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 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
- B29C49/24—Lining or labelling
-
- 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
- B29C49/24—Lining or labelling
- B29C2049/2404—Lining or labelling inside 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
- B29C2049/2431—Means for preparing or treating the label or lining, e.g. cutting, deforming, heating or applying adhesive
- B29C2049/2441—Deforming
-
- 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
- B29C49/24—Lining or labelling
- B29C2049/2464—Means for verifying or keeping the position of the lining or label, e.g. sensors, or attachment on mould wall
- B29C2049/2472—Means for verifying or keeping the position of the lining or label, e.g. sensors, or attachment on mould wall using vacuum
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、多層中空成形品の製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing a multilayer hollow molded article.
たとえば、自動車のコンソールボツクスのリツ
ド、グローブボツクスのリツド、アームレスト、
あるいは断熱ダクト等の中空成形品では、柔軟な
感触と強度、あるいは断熱性と強度の双方を満足
するために多層構造とすることがある。
For example, automobile console box lids, glove box lids, armrests,
Alternatively, hollow molded products such as heat insulating ducts may have a multilayer structure in order to satisfy both a flexible feel and strength, or both heat insulation and strength.
このような多層中空成形品たとえばコンソール
ボツクスのリツドを製造する場合；
従来、第１図に示すように、ブロウ成形用の金
型１，２間にノズル３から断面環状のパリソン
４，５を内外２重の状態で吐出して導入し、金型
１，２を型閉めした後、内側のパリソン５内に空
気を吹き込むことによつて、パリソン４，５を密
着一体化させるとともに第２図に示すように所定
の中空形状に成形し、ついで、上下両端の合わせ
部６，７を切除することによつて、第３図に示す
ようなリツド８を得ており、リツド８の表皮９と
なる外側のパリソン４を軟質発泡合成樹脂、リツ
ド８の芯材１０となる内側のパリソン５を硬質合
成樹脂とすることにより、柔軟な感触と強度の双
方を満足するようにしている。 When manufacturing such a multilayer hollow molded product, such as the lid of a console box, conventionally, as shown in FIG. After the molds 1 and 2 are discharged and introduced in a double state and the molds 1 and 2 are closed, air is blown into the inner parison 5 to tightly integrate the parisons 4 and 5, and as shown in FIG. As shown, the lid 8 as shown in FIG. 3 is obtained by molding it into a predetermined hollow shape and then cutting off the joining parts 6 and 7 at both the upper and lower ends, which becomes the skin 9 of the lid 8. The outer parison 4 is made of a soft foamed synthetic resin, and the inner parison 5, which is the core material 10 of the lid 8, is made of a hard synthetic resin, so that both a soft feel and strength are satisfied.
また、他の製造方法として、第４図に示すよう
に、予め所定の形状に成形するとともに全周に合
わせ部１１，１２を残した軟質発泡合成樹脂製の
表皮１３，１４をブロウ成形用の金型１，２に装
着し、この金型１，２間に芯材１５，１６となる
シート状のパリソン１７，１８を導入し、金型
１，２を型閉めした後、パリソン１７，１８間に
空気を吹き込むことによつて、パリソン１７，１
８を所定の形状に成形するとともに表皮１３，１
４に密着一体化させ、ついで、表皮１３，１４の
合わせ部１１，１２及びこの合わせ部１１，１２
に密着一体化した芯材１５，１６の合わせ部を切
除することにより、第５図に示すようなリツド１
９を得ている。 In addition, as another manufacturing method, as shown in FIG. 4, skins 13 and 14 made of soft foamed synthetic resin are molded in advance into a predetermined shape and have mating parts 11 and 12 left on the entire circumference, and are used for blow molding. The parisons 17 and 18 are installed in the molds 1 and 2, and sheet-like parisons 17 and 18, which serve as core materials 15 and 16, are introduced between the molds 1 and 2, and after the molds 1 and 2 are closed, the parisons 17 and 18 are By blowing air between the parisons 17,1
8 into a predetermined shape and the skin 13,1
4, and then the joint parts 11 and 12 of the skins 13 and 14 and the joint parts 11 and 12 of the skins 13 and 14.
By cutting out the joining part of the core materials 15 and 16 that are closely integrated with the lid 1 as shown in FIG.
I got a 9.
しかしながら、第１図ないし第３図に示した方
法の場合、表皮９と芯材１０の合わせ部６，７が
金型１，２の接合部の上下の外側に出る状態であ
り、また、第４図及び第５図に示した方法の場
合、表皮１３，１４の合わせ部１１，１２と芯材
１５，１６の合わせ部が金型１，２の接合部の全
周外側に出る状態であり、このため、第３図のリ
ツド８では両端部に、また、第５図のリツド１９
では全周に、第６図に示すように、表皮９，１
３，１４及び芯材１０，１５，１６の切断面が露
出し、外観上に問題がある他、手触り等の感触が
悪く、合わせ部６，７，１１，１２などの切除も
面倒であつた。 However, in the case of the method shown in FIGS. 1 to 3, the joint parts 6 and 7 of the skin 9 and the core material 10 are exposed to the outside of the upper and lower joint parts of the molds 1 and 2, and In the case of the method shown in Figs. 4 and 5, the joint parts 11, 12 of the skins 13, 14 and the joint parts of the core materials 15, 16 are in a state where the joint parts of the molds 1, 2 are exposed all around the outside. , For this reason, the lid 8 in FIG. 3 is provided at both ends, and the lid 19 in FIG.
Now, as shown in Figure 6, the epidermis 9, 1 is placed all around the circumference.
3 and 14 and the cut surfaces of the core materials 10, 15, and 16 were exposed, which caused problems in terms of appearance, as well as poor feel to the touch, and it was troublesome to remove the mating parts 6, 7, 11, 12, etc. .
本発明は、上述したような点に鑑みなされたも
ので、多層中空成形品の製造に際して、表皮の切
除を不要にするとともに、表皮の切断面が製品の
外部に露出しないようにすることを目的とするも
のである。
The present invention was made in view of the above-mentioned points, and aims to eliminate the need to remove the epidermis when producing a multilayer hollow molded product, and to prevent the cut surface of the epidermis from being exposed to the outside of the product. That is.
本発明は、複数の合成樹脂層を備えた多層中空
成形品の製造方法であつて、真空成形により上記
成形品の表皮を所定形状に形成するとともにこの
表皮の端縁部に上記成形品の内側に向かう折り返
し部を形成し、これを中空成形金型の少なくとも
一方に装着し、断面環状のパリソンを両金型間に
導入し、型閉めを行なつた後、上記パリソン内に
空気を吸込み、上記パリソンで上記表皮の端面を
被つたことを特徴とするものである。
The present invention is a method for manufacturing a multilayer hollow molded product having a plurality of synthetic resin layers, in which the skin of the molded product is formed into a predetermined shape by vacuum forming, and the edge of the skin is formed on the inside of the molded product. forming a folded part toward the air, mounting this on at least one of the hollow molding molds, introducing a parison with an annular cross section between both molds, closing the mold, and sucking air into the parison; It is characterized in that the parison covers the end face of the skin.
本発明の多層中空成形品の製造方法を、図面に
示す実施例に基づいて詳細に説明する。
The method for producing a multilayer hollow molded article of the present invention will be explained in detail based on examples shown in the drawings.
なお、この実施例は第３図及び第５図に示した
自動車用のコンソールボツクスのリツド８，１９
と同様なリツドを製造する例である。 This embodiment is applicable to the lids 8 and 19 of the automobile console box shown in FIGS. 3 and 5.
This is an example of manufacturing a lid similar to the above.
まず、第７図に示すように、軟質発泡合成樹脂
製のシート２１を軟化点以上熔融点以下の温度に
加熱して可塑化した上で、真空成形金型２２によ
り真空成形を行ない、リツドの上面の表皮２３を
所定形状に形成するとともにこの表皮２３の端縁
部にリツドの内側に向かう折り返し部２４を全周
に渡つて形成し、不要部分２５を切除することに
より、第８図に示すような、端縁部に折り返し部
２４を備えた所定形状の表皮２３を形成する。ま
た、同様に、第９図に示すように、軟質発泡合成
樹脂製のシート３１を真空成形金型３２により真
空成形を行ない、リツドの下面の表皮３３を所定
形状に形成するとともにこの表皮３３の端縁部に
リツドの内側に向かう折り返し部３４を全周に渡
つて形成し、不要部分３５を切除することによ
り、第１０図に示すような、端縁部に折り返し部
３４を備えた所定形状の表皮３３を形成する。 First, as shown in FIG. 7, a sheet 21 made of soft foamed synthetic resin is plasticized by heating to a temperature above the softening point and below the melting point, and then vacuum formed using a vacuum forming mold 22 to form a lid. By forming the upper surface skin 23 into a predetermined shape, and forming a folded part 24 toward the inside of the lid at the edge of the skin 23 over the entire circumference, and cutting off an unnecessary part 25, as shown in FIG. A skin 23 having a predetermined shape having a folded portion 24 at the end edge is formed. Similarly, as shown in FIG. 9, a sheet 31 made of soft foamed synthetic resin is vacuum formed using a vacuum mold 32 to form a skin 33 on the lower surface of the lid into a predetermined shape. By forming a folded part 34 toward the inside of the lid at the end edge over the entire circumference and cutting off an unnecessary part 35, a predetermined shape with a folded part 34 at the end edge as shown in FIG. 10 is obtained. The epidermis 33 is formed.
ついで、第１１図に示すように、上記各表皮２
３，３３をリツドと同形状の中空成形金型４１，
４２に装着し、この金型４１，４２間に硬質合成
樹脂製の断面環状のパリソン４３を、その先端部
が金型４１，４２に装着した表皮２３，３３の折
り返し部２４，３４から外部に出ない位置まで導
入する。 Next, as shown in FIG. 11, each of the above-mentioned epidermis 2
3, 33 into a hollow mold 41 of the same shape as the lid,
42, and between the molds 41 and 42, a parison 43 made of hard synthetic resin and having an annular cross section is inserted, with its tip end extending outward from the folded portions 24 and 34 of the skins 23 and 33 mounted on the molds 41 and 42. Introduce it until it does not come out.
なお、上記パリソン４３の先端部は先に行なわ
れた金型４１，４２の型閉めにより封着されてい
るとともに、その内部に空気が吹き込まれて先端
部以外の部分が熱融着しない程度つまりパリソン
４３を吐出する図示しないノズルの口径と同じ程
度にふくらまされているものとする。 Note that the tip of the parison 43 is sealed by the previous closing of the molds 41 and 42, and air is blown into the inside of the parison 43 to the extent that parts other than the tip are not thermally fused. It is assumed that the parison 43 is inflated to the same extent as the diameter of a nozzle (not shown) that discharges the parison 43.
また、上記金型４１，４２の上部には、第１２
図にも示すように、ヒンジ形成部４４、取付片形
成部４５及び取付穴形成ピン４６が設けられてい
る。 Further, on the upper part of the molds 41 and 42, a twelfth
As shown in the figure, a hinge forming part 44, a mounting piece forming part 45, and a mounting hole forming pin 46 are provided.
ついで、上記各金型４１，４２の型閉めを行な
つた後、図示しない空気吸込口から上記パリソン
４３内に空気を吹き込んでブロウ成形を行なう。 Next, after the molds 41 and 42 are closed, air is blown into the parison 43 from an air suction port (not shown) to perform blow molding.
このとき、上記各金型４１，４２に装着された
各表皮２３，３３の折り返し部２４，３４は、第
１３図ないし第１５図に示すように、型閉めにし
たがつて互いに重合して内側に向かつた状態で密
着し、上記パリソン４３が空気の吹き込みによつ
て膨脹すると、密着状態の折り返し部２４，３４
は、第１６図に示すように、パリソン４３に包み
込まれて完全に被われる。 At this time, as the molds are closed, the folded parts 24, 34 of the skins 23, 33 attached to the molds 41, 42 overlap with each other as the molds are closed, and the folded parts 24, 34 of the skins 23, 33 attached to the molds 41, 42 overlap with each other on the inside, as shown in FIGS. 13 to 15. When the parison 43 is expanded by blowing air, the folded portions 24 and 34 in the close contact state
is completely covered by the parison 43, as shown in FIG.
そして、ブロウ成形により膨脹したパリソン４
３は、第１７図及び第１８図に示すように、表皮
２３，３３に密着して熱融着するとともに、表皮
２３，３３の折り返し部２４，３４を包み込んで
完全に固定し、表皮２３，３３とパリソン４３か
らできた芯材５１とで多層中空成形品としての自
動車用のコンソールボツクスのリツド５２ができ
る。 Then, the parison 4 was expanded by blow molding.
3, as shown in FIGS. 17 and 18, is closely attached to the skins 23, 33 and heat-sealed, and wraps around the folded parts 24, 34 of the skins 23, 33 to completely fix the skins 23, 33. 33 and a core material 51 made from the parison 43 form a lid 52 of a console box for an automobile as a multilayer hollow molded product.
また、上記リツド５２の上端には、上記ヒンジ
形成部４４、取付片形成部４５及び取付穴形成ピ
ン４６によつて、上記パリソン４３から薄肉ヒン
ジ５３と取付穴５４付きの取付片５５が一体に形
成される。 Further, at the upper end of the lid 52, a thin hinge 53 and a mounting piece 55 with a mounting hole 54 are integrated from the parison 43 by the hinge forming part 44, the mounting piece forming part 45, and the mounting hole forming pin 46. It is formed.
このようにして製造したリツド５２は、その外
面に表皮２３，３３の端縁部が露出しないので、
外観上、見栄えが良く、手触り等の感触もよく、
しかも、パリソン４３からできた芯材５１も薄肉
ヒンズ５３及び取付片５５として外部に出るだけ
なので、リツド５２をコンソールボツクスに取付
けた際には、これらが外部から見えることはな
く、その上、表皮２３，３３などの端部を切除す
る必要が無く仕上げ処理が不要となる。 Since the lid 52 manufactured in this way does not expose the edges of the skins 23 and 33 on its outer surface,
In terms of appearance, it looks good and feels good to the touch.
Furthermore, the core material 51 made from the parison 43 also exits only as the thin hinges 53 and the mounting pieces 55, so when the lid 52 is attached to the console box, these are not visible from the outside, and the skin There is no need to cut off the ends such as 23, 33, etc., and no finishing treatment is required.
なお、上述したパリソン４３のブロウ成形の際
に、パリソン４３と表皮２３，３３とが互いに熱
融着しないような場合には、予め表皮２３，３３
に接着剤を塗布しておけばよい。 Note that when the parison 43 is blow-molded as described above, if the parison 43 and the skins 23, 33 are not heat-fused to each other, the skins 23, 33 are
You can apply adhesive to it.
また、本発明の実施に際しては、上述したリツ
ド５２のような２重構造に限らず、３層以上とす
ることもでき、たとえば、第１９図及び第２０図
に示すように、ノズル６１から断面環状のパリソ
ン６２，６３を内外２重の状態で吐出すると、表
皮２３，３３と２層の芯材６４，６５から成る３
層構造の中空成形品としてのリツド６６を製造で
き、たとえば、表皮２３，３３、外側の芯材６
４、内側の芯材６５の順に硬度を変えることによ
つて、リツド６６の表面の感触をより一層、良好
にでき、この他にも、各層の材質、硬度等を変え
ることによつて、様々な要求に応えることができ
る。 Furthermore, when carrying out the present invention, the lid 52 is not limited to a double structure as described above, but may have three or more layers. For example, as shown in FIGS. 19 and 20, a cross section from the nozzle 61 When the annular parisons 62 and 63 are discharged in a double layered state, the parisons 62 and 63 are made up of outer skins 23 and 33 and two layers of core materials 64 and 65.
The lid 66 can be manufactured as a hollow molded product with a layered structure, for example, the skins 23 and 33, the outer core material 6
4. By changing the hardness of the inner core material 65 in order, the surface feel of the lid 66 can be made even better.In addition, by changing the material, hardness, etc. of each layer, various changes can be made. We can meet various demands.
また、リツド５２，６６のような製品では、必
ずしも下面の表皮３３は必要ではないので、第２
１図及び第２２図にそれぞれ示すように、下面の
表皮３３を省略することもできる。 In addition, in products such as the lids 52 and 66, the lower skin 33 is not necessarily required, so the second
As shown in FIGS. 1 and 22, the lower skin 33 can also be omitted.
また、第２２図に例示するように、表皮２３の
折り返し部２４は中空成形金型４１，４２の接合
部に位置する必要はなく、要は折り返し部２４が
パリソン４３によつて被われて固定される位置で
あればよい。なお、この点は金型４１，４２の両
方に表皮２３，３３を装着した場合も同様で、各
表皮２３，３３の折り返し部２４，３４が、型閉
めにより密着し、パリソン４３，６２，６３に包
み込まれて固定される位置であればよい。 Furthermore, as illustrated in FIG. 22, the folded part 24 of the skin 23 does not need to be located at the joint between the hollow molds 41 and 42, and the point is that the folded part 24 is covered by the parison 43 and fixed. Any position is acceptable. Note that this point is also the same when the skins 23, 33 are attached to both the molds 41, 42. Any position that can be wrapped and fixed is fine.
また、本発明をコンソールボツクスのリツド５
２，６６あるいはグローブボツクスのリツド等の
ように片持ち状に取付けられる製品でなく、両端
部に取付片５５のような取付部を必要とする製品
に適用する場合には、パリソン４３，６２，６３
の先端部を金型４１，４２に装着した表皮２３，
３３の折り返し部２４，３４から外部に出すと、
製品の両端部にパリソン４３，６２，６３から成
る取付部を形成することができる。 The present invention can also be applied to console box lid 5.
2, 66 or a product that is installed in a cantilevered manner such as a glove box lid, etc., but when it is applied to a product that requires mounting parts such as the mounting pieces 55 at both ends, parisons 43, 62, 63
A skin 23 whose tips are attached to molds 41 and 42,
When taken out from the folded parts 24, 34 of 33,
Mounting parts consisting of parisons 43, 62, 63 can be formed at both ends of the product.
上述したように、本発明によれば、多層中空成
形品を製造する際に、端縁部に成形品の内側に向
かう折り返し部を設けた表皮を形成し、この表皮
を中空成形金型に装着し、この金型で断面環状の
パリソンのブロウ成形を行なうことにより、パリ
ソンで表皮の端面を被つたので、表皮の端部が成
形品の外部に露出することがなく、その切除も不
要で、したがつて、外観上の見栄えが良く、手触
り等の感触もよく、しかも、パリソンの露出部は
１ケ所のみとすることもできるので、この処理も
容易にできる。
As described above, according to the present invention, when manufacturing a multilayer hollow molded product, a skin is formed with a folded part toward the inside of the molded product at the end edge, and this skin is attached to a blow molding die. However, by blow molding a parison with an annular cross section using this mold, the end surface of the skin is covered with the parison, so the end of the skin is not exposed to the outside of the molded product, and there is no need to remove it. Therefore, it has a good appearance and feels good to the touch, and since only one exposed part of the parison can be used, this process can be easily performed.
第１図は多層中空成形品の従来の製造方法の一
例を示す断面図、第２図はその成形品の断面図、
第３図はその成形品の完成状態の斜視図、第４図
は従来の製造方法の別の例を示す断面図、第５図
はその成形品の完成状態の斜視図、第６図は第３
図及び第５図の成形品の部分断面図、第７図ない
し第１８図は本発明の製造方法の一実施例を示
し、第７図及び第９図はそれぞれ表皮の形成状態
を示す断面図、第８図及び第１０図はそれぞれ表
皮の斜視図、第１１図は中空成形の状態を示す断
面図、第１２図は中空成形金型の斜視図、第１３
図ないし第１６図は中空成形時の表皮の状態を示
す断面図、第１７図は成形品の断面図、第１８図
はその部分拡大断面図であり、第１９図及び第２
０図は他の実施例を示し、第１９図は中空成形の
状態を示す断面図、第２０図は成形品の部分拡大
断面図であり、第２１図及び第２２図はそれぞれ
さらに他の実施例を示す中空成形の状態の断面図
である。
２３…表皮、２４…折り返し部、３３…表皮、
３４…折り返し部、４１，４２…中空成形金型、
４３…パリソン、５２…成形品としてのリツド、
６２，６３…パリソン、６６…成形品としてのリ
ツド。
Fig. 1 is a cross-sectional view showing an example of a conventional manufacturing method for a multilayer hollow molded product, Fig. 2 is a cross-sectional view of the molded product,
3 is a perspective view of the completed molded product, FIG. 4 is a sectional view showing another example of the conventional manufacturing method, FIG. 5 is a perspective view of the completed molded product, and FIG. 6 is a sectional view of the completed molded product. 3
5 and 5, FIGS. 7 to 18 show an embodiment of the manufacturing method of the present invention, and FIGS. 7 and 9 are sectional views showing the state of formation of the skin, respectively. , Fig. 8 and Fig. 10 are respectively perspective views of the skin, Fig. 11 is a cross-sectional view showing the state of blow molding, Fig. 12 is a perspective view of the blow molding die, and Fig. 13 is a perspective view of the skin.
16 to 16 are cross-sectional views showing the state of the skin during blow molding, FIG. 17 is a cross-sectional view of the molded product, FIG. 18 is a partially enlarged cross-sectional view, and FIGS.
Fig. 0 shows another embodiment, Fig. 19 is a sectional view showing the state of blow molding, Fig. 20 is a partially enlarged sectional view of the molded product, and Figs. 21 and 22 show still other embodiments. It is a sectional view of the state of blow molding showing an example. 23... Epidermis, 24... Folded part, 33... Epidermis,
34...Folded part, 41, 42...Blow molding mold,
43... Parison, 52... Lid as a molded product,
62, 63...Parison, 66...Lid as a molded product.
Claims (1)
製造方法であつて、 真空成形により上記成形品の表皮を所定形状に
形成するとともにこの表皮の端縁部に上記成形品
の内側に向かう折り返し部を形成し、これを中空
成形金型の少なくとも一方に装着し、断面環状の
パリソンを両金型間に導入し、型閉めを行なつた
後、上記パリソン内に空気を吸込み、上記パリソ
ンで上記表皮の端面を被つたことを特徴とする多
層中空成形品の製造方法。[Scope of Claims] 1. A method for producing a multilayer hollow molded product having a plurality of synthetic resin layers, which comprises forming a skin of the molded product into a predetermined shape by vacuum forming, and applying the molding to the edge of the skin. A folded part facing the inside of the product is formed, this is attached to at least one of the hollow molding molds, a parison with an annular cross section is introduced between both molds, and after the mold is closed, air is injected into the parison. A method for producing a multilayer hollow molded product, characterized in that the end face of the skin is covered with the parison.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22971983A JPS60122132A (en) | 1983-12-05 | 1983-12-05 | Manufacture of multi-layer hollow molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22971983A JPS60122132A (en) | 1983-12-05 | 1983-12-05 | Manufacture of multi-layer hollow molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60122132A JPS60122132A (en) | 1985-06-29 |
| JPS6240176B2 true JPS6240176B2 (en) | 1987-08-27 |
Family
ID=16896626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22971983A Granted JPS60122132A (en) | 1983-12-05 | 1983-12-05 | Manufacture of multi-layer hollow molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60122132A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09502635A (en) * | 1993-09-14 | 1997-03-18 | ザ、プロクター、エンド、ギャンブル、カンパニー | Absorbent article having multiple topsheets |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716998B2 (en) * | 1986-11-18 | 1995-03-01 | 株式会社三洋化成工業所 | Crimping method |
| JPH0714000U (en) * | 1993-08-10 | 1995-03-10 | 秀二郎 江川 | Extractor for anchor |
| JP3371607B2 (en) * | 1995-03-31 | 2003-01-27 | 豊田合成株式会社 | Lid with skin |
| US5804127A (en) * | 1995-05-29 | 1998-09-08 | Ube Industries, Ltd. | Blow molding method |
-
1983
- 1983-12-05 JP JP22971983A patent/JPS60122132A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09502635A (en) * | 1993-09-14 | 1997-03-18 | ザ、プロクター、エンド、ギャンブル、カンパニー | Absorbent article having multiple topsheets |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60122132A (en) | 1985-06-29 |
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