JPH0434920B2 - - Google Patents
Info
- Publication number
- JPH0434920B2 JPH0434920B2 JP63318866A JP31886688A JPH0434920B2 JP H0434920 B2 JPH0434920 B2 JP H0434920B2 JP 63318866 A JP63318866 A JP 63318866A JP 31886688 A JP31886688 A JP 31886688A JP H0434920 B2 JPH0434920 B2 JP H0434920B2
- Authority
- JP
- Japan
- Prior art keywords
- sewing
- thread
- needle
- base material
- skin
- 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
- 238000009958 sewing Methods 0.000 claims description 68
- 239000000463 material Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 20
- 238000010097 foam moulding Methods 0.000 claims description 5
- 210000003491 skin Anatomy 0.000 description 28
- 239000011347 resin Substances 0.000 description 16
- 229920005989 resin Polymers 0.000 description 16
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 210000002615 epidermis Anatomy 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920006264 polyurethane film Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002759 woven fabric 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1261—Avoiding impregnation of a preformed part
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、表皮を成形型内に配置した後発泡成
形する表皮一体発泡成形に用いられる表皮を縫製
する方法に関する。本発明の縫製方法は、自動車
のヘツドレスト、シートなどの表皮を縫製する場
合などに利用される。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for sewing a skin used in skin-integrated foam molding in which the skin is placed in a mold and then foam-molded. The sewing method of the present invention is used when sewing the outer skin of automobile headrests, seats, etc.
［従来の技術］
例えば自動車のヘツドレストとしては、発泡樹
脂からなる成形体に皮革、樹脂、不織布、織布な
どから形成された表皮を被覆したものが従来より
用いられている。このようなヘツドレストを製造
する場合、成形体と表皮とを別々に形成し、その
後成形体に表皮を被せて縫製する方法が一般に行
なわれていた。しかし、この方法では工数が多大
となるとともに、表皮内で成形体の位置がずれて
外観品質不良が生じるといつた不具合があつた。
そこで近年、成形型内に予め所定形状に形成され
た表皮を配置し、表皮内で樹脂を発泡させること
により成形体と表皮とを一体成形して一体的に接
合する方法が開発され、この方法が主流となりつ
つある。[Prior Art] For example, as a headrest for an automobile, a molded body made of foamed resin and covered with a skin made of leather, resin, nonwoven fabric, woven fabric, etc. has been conventionally used. When manufacturing such a headrest, a method has generally been used in which a molded body and a skin are formed separately, and then the molded body is covered with the skin and sewn. However, this method requires a large amount of man-hours and has the disadvantage that the position of the molded body shifts within the skin, resulting in poor appearance quality.
Therefore, in recent years, a method has been developed in which a skin formed in a predetermined shape is placed in a mold and resin is foamed within the skin to integrally mold and integrally join the molded body and the skin. is becoming mainstream.
ところで表皮の形状は一般に３次元形状であ
る。そのため皮革や不織布などから表皮を形成す
る場合、所定形状に裁断されたシート状の基材を
中表に合わせ、ミシンで縫製した後反転して３次
元形状の表皮を形成している。 Incidentally, the shape of the epidermis is generally three-dimensional. Therefore, when forming a skin from leather or nonwoven fabric, a sheet-like base material cut into a predetermined shape is aligned with the inner side, sewn with a sewing machine, and then turned over to form a three-dimensional skin.
［発明が解決しようとする課題］
ミシンを用いて縫製する場合、第８図および第
９図に示すように、縫い針を下降させることで上
糸１００を縫い針とともに重ねられた２枚の基材
４０１，４０２の表面から裏面に向かつて挿通す
る。そして上糸１００を裏面側に配置された下糸
２００に絡ませた後、縫い針を上昇させることで
上糸１００を表面側に戻す。次いで基材４０１，
４０２を送つて所定間隔隔てた次の縫製位置まで
上糸１００および下糸２００を延ばす。この単位
縫製を繰返し行なうことで縫製している。この時
第９図に示すように、基材４０１，４０２には針
穴３０１，３０２が穿設される。ここで上糸１０
０は縫い針に形成された糸孔に挿通されている。
したがつて基材４０１，４０２には第１０図に拡
大して示すように、２本の上糸１００の断面と縫
い針の断面の合計面積に相当する針穴３０１，３
０２が穿設される。なお、上糸の径が決まれば糸
孔の径が決まり、縫い針の径は強度を維持しつつ
その糸孔をもち得る最小の径とされる。したがつ
て上糸の径が決まれば、針穴の大きさは一義的に
決定される。[Problems to be Solved by the Invention] When sewing using a sewing machine, as shown in FIGS. 8 and 9, by lowering the sewing needle, the upper thread 100 is threaded together with the sewing needle into two stacked bases. The material 401, 402 is inserted from the front surface to the back surface. After the upper thread 100 is entwined with the lower thread 200 placed on the back side, the sewing needle is raised to return the upper thread 100 to the front side. Next, the base material 401,
402 to extend the upper thread 100 and the lower thread 200 to the next sewing position separated by a predetermined interval. Sewing is performed by repeatedly performing this unit sewing. At this time, as shown in FIG. 9, needle holes 301, 302 are bored in the base materials 401, 402. Here, upper thread 10
0 is inserted into a thread hole formed in the sewing needle.
Therefore, as shown enlarged in FIG. 10, the base materials 401 and 402 have needle holes 301 and 3 corresponding to the total area of the cross section of the two needle threads 100 and the cross section of the sewing needle.
02 is drilled. Note that once the diameter of the upper thread is determined, the diameter of the thread hole is determined, and the diameter of the sewing needle is set to be the smallest diameter that can accommodate the thread hole while maintaining strength. Therefore, once the diameter of the needle thread is determined, the size of the needle hole is uniquely determined.
このように縫製された基材を反転して表皮と
し、成形型内に配置して一体発泡成形をおこなう
と、第１１図に示すように発泡樹脂が針穴３０
１，３０２から漏れて表面に表出する場合があつ
た。そのため縫い目の目止め処理などを行なう必
要があり、工数が多大となつていた。 When the base material sewn in this way is reversed to form a skin, placed in a mold, and integrally foamed, the foamed resin forms at the needle hole 30 as shown in Figure 11.
1,302 and appeared on the surface in some cases. Therefore, it is necessary to seal the seams, which requires a large amount of man-hours.
この発泡樹脂の漏れは、表面側（上糸側）の基
材４０１の針穴３０１からの漏れ（矢印Ａ）と、
裏面側（下糸側）の基材４０２の針穴３０２から
の漏れ（矢印Ｂ）の２種類がある。本発明はこの
うち裏面側の基材４０２の針穴３０２からの発泡
樹脂の漏れを防止することを目的とするものであ
る。 This foamed resin leaks from the needle hole 301 of the base material 401 on the surface side (needle thread side) (arrow A),
There are two types of leakage (arrow B) from the needle hole 302 of the base material 402 on the back side (lower thread side). The purpose of the present invention is to prevent the foamed resin from leaking from the needle holes 302 of the base material 402 on the back side.
［課題を解決するための手段］
本発明の発明者らは、裏面側の基材４０２の針
穴３０２からの発泡樹脂の漏れの原因を検討し
た。その結果、第１２図に示すように、針穴３０
２の大部分は２本の上糸１００と下糸２００で覆
われている。しかし従来は上糸１００と下糸２０
０とは同一径の糸を使用しているため、針穴３０
２を完全に塞ぐことは困難で隙間３０３が残つて
いることを発見した。そしてミシンでは下糸の径
は自由に設定できるという知見に基づき、下糸の
径を種々変更して実験を重ねたところ、上糸の径
に対して所定の径以上の下糸を用いることにより
裏面側の針穴３０２からの発泡樹脂の漏れが防止
されることを見出し本発明を完成したものであ
る。[Means for Solving the Problems] The inventors of the present invention investigated the cause of leakage of foamed resin from the needle hole 302 of the base material 402 on the back side. As a result, as shown in FIG.
2 is mostly covered by two upper threads 100 and lower threads 200. However, conventionally, the upper thread was 100 and the lower thread was 20.
Since thread of the same diameter as 0 is used, the needle hole is 30
It was discovered that it was difficult to completely close up the gap 303 and a gap 303 remained. Based on the knowledge that the diameter of the bobbin thread can be set freely on sewing machines, we conducted repeated experiments with various diameters of the bobbin thread, and found that by using a bobbin thread with a diameter larger than a predetermined diameter for the needle thread diameter, The present invention was completed by discovering that leakage of the foamed resin from the needle hole 302 on the back side can be prevented.
すなわち本発明の表皮一体発泡成形用表皮の縫
製方法は、所定形状に裁断された２枚のシート状
基材を中表に合わせ、−の縫製位置で糸孔に上糸
が挿通された縫い針を基材の表面側より裏面側に
向かつて挿通し裏面側に配置された下糸に上糸を
絡ませた後縫い針を基材の表面側より引き抜き次
いで縫製位置から所定間隔隔てた次の縫製位置ま
で上糸および下糸を延ばす単位縫製を繰返し行な
うことにより基材を縫製して表皮とする縫製方法
において、
下糸の長径を上糸の直径の1.2倍以上としたこ
とを特徴とする。 That is, the method of sewing a skin for integral foam molding of the present invention involves aligning two sheet-like base materials cut into a predetermined shape with their inner sides facing each other, and using a sewing needle with an upper thread inserted through the thread hole at the - sewing position. is inserted from the front side of the base material toward the back side, and the upper thread is entwined with the bobbin thread placed on the back side.Then, the sewing needle is pulled out from the front side of the base material, and then the next sewing is performed at a predetermined interval from the sewing position. A sewing method in which a base material is sewn to form a skin by repeatedly performing unit sewing in which the upper thread and lower thread are extended to the desired position, characterized in that the longer diameter of the lower thread is 1.2 times or more the diameter of the upper thread.
本発明の縫製方法では、下糸の長径を上糸の直
径の1.2倍以上としたところに最大の特徴を有す
る。ここで下糸の長径とは、下糸の断面の最長の
径をいい、断面が楕円形であればその長径を、断
面が円形であればその直径をいう。下糸の長径が
上糸の直径の1.2倍より細いと針穴を完全に塞ぐ
ことが困難となり、隙間が生じるようになる。
1.75〜2.5倍とするのがより好ましい。2.5倍以上
に太くなつても効果が飽和し、ボビンへの巻数が
少なくなるためボビンの交換回数が極端に増大す
るので好ましくない。 The sewing method of the present invention has the greatest feature in that the longer diameter of the lower thread is 1.2 times or more the diameter of the upper thread. Here, the long axis of the bobbin thread refers to the longest diameter of the cross section of the bobbin thread, and if the cross section is oval, it is the long axis, and if the cross section is circular, it is the diameter. If the long axis of the bobbin thread is thinner than 1.2 times the diameter of the needle thread, it will be difficult to completely close the needle hole, and a gap will occur.
More preferably, it is 1.75 to 2.5 times. Even if it becomes thicker than 2.5 times, the effect will be saturated and the number of turns on the bobbin will decrease, which is not preferable because the number of bobbin replacements will be extremely increased.
本発明の縫製方法は、ミシンを用いて従来と同
様に行なうことができる。また上糸および下糸の
材質も特に制限されず、従来と同様の材質の糸を
用いることができる。 The sewing method of the present invention can be performed using a sewing machine in a conventional manner. Further, the materials of the upper thread and the lower thread are not particularly limited, and threads made of the same materials as conventional threads can be used.
［作用］
本発明の縫製方法では、所定形状に裁断された
２枚のシート状基材を中表に合わせ、ーの縫製位
置で糸孔に上糸が挿通された縫い針を基材の表面
側より裏面側に向かつて挿通し、裏面側に配置さ
れた下糸に上糸を絡ませた後、縫い針を基材の表
面側より引き抜き、次いで縫製位置から所定間隔
隔てた次の縫製位置まで上糸および下糸を延ばす
単位縫製を繰返し行なう。ここで下糸の長径は上
糸の直径の1.2倍以上となつている。これにより
第３図および第４図にも示すように、裏面側（下
糸側）の基材の針穴は上糸１と下糸２とで完全に
塞がれることとなる。[Function] In the sewing method of the present invention, two sheet-like base materials cut into a predetermined shape are aligned with their inner sides facing each other, and a sewing needle with an upper thread inserted through the thread hole is inserted into the surface of the base material at the sewing position -. Insert the sewing needle from the side to the back side, entwine the upper thread with the bobbin thread placed on the back side, then pull out the sewing needle from the front side of the base material, and then move to the next sewing position at a predetermined interval from the sewing position. Repeat unit sewing to lengthen the upper and lower threads. Here, the long axis of the lower thread is at least 1.2 times the diameter of the upper thread. As a result, as shown in FIGS. 3 and 4, the needle hole in the base material on the back side (lower thread side) is completely covered by the upper thread 1 and the lower thread 2.
［発明の効果］
本発明の縫製方法によれば、裏面側の基材に形
成された針穴は上糸および下糸で塞がれる。した
がつて得られた表皮を用いて一体発泡成形を行な
うと、その部分からの発泡樹脂の漏れを防止でき
る。すなわち縫い目の目止め処理などを行なわな
くとも、従来と同様に縫製するだけで上糸と下糸
により針穴を塞ぐことができるので、工数を削減
できコストの低減を図ることができる。[Effects of the Invention] According to the sewing method of the present invention, the needle hole formed in the base material on the back side is closed with the upper thread and the lower thread. Therefore, by performing integral foam molding using the obtained skin, leakage of the foamed resin from that part can be prevented. In other words, the needle hole can be closed with the needle thread and bobbin thread just by sewing in the same manner as in the past, without the need to seal the seams, thereby reducing the number of man-hours and cost.
［実施例］ 以下、実施例により具体的に説明する。[Example] Hereinafter, this will be explained in detail using examples.
（実施例 １）
本実施例は、自動車座席のヘツドレストの表皮
を縫製する場合に本発明を適用したものである。(Example 1) In this example, the present invention is applied to the case where the skin of the headrest of an automobile seat is sewn.
まず第２図に断面図を示すように、フエルト層
１１と、ポリウレタン製スラブフオーム層１２
と、ポリウレタンフイルム１３とが一体的に接着
積層されたシート状基材を用意する。そしてこの
基材をヘツドレストの展開形状を構成する複数枚
に裁断する。 First, as shown in the cross-sectional view in FIG. 2, a felt layer 11 and a polyurethane slab foam layer 12 are
A sheet-like base material is prepared in which a polyurethane film 13 and a polyurethane film 13 are integrally laminated with adhesive. Then, this base material is cut into a plurality of sheets constituting the developed shape of the headrest.
次に展開形状で隣接する２枚の基材１，１′を、
それぞれフエルト層１１が対向するように中表に
合わせ、第１図に示すようにミシンを用いて縫製
部分を縫製する。この時上糸２には直径0.35mmの
ポリエステル糸を用い、下糸３には直径0.6mmの
ポリエステル糸を用いた。ミシン針の最大径は
0.95mm、糸孔の径は0.4mmである。そしてーの縫
製位置で糸孔に上糸２が挿通されたミシン針を基
材１より基材１′に向かつて挿通し、基材１′側に
配置された下糸３に上糸２を絡ませた後、ミシン
針を基材１より引き抜き、次いで縫製位置から所
定間隔隔てた次の縫製位置まで上糸２および下糸
３を延ばす単位縫製を繰返し行なつて縫製した。
縫製のピツチは４mmである。 Next, the two adjacent base materials 1 and 1' in the developed shape are
The inner sides are aligned so that the felt layers 11 face each other, and the sewn parts are sewn using a sewing machine as shown in FIG. At this time, a polyester thread with a diameter of 0.35 mm was used as the upper thread 2, and a polyester thread with a diameter of 0.6 mm was used as the lower thread 3. The maximum diameter of a sewing machine needle is
0.95mm, and the diameter of the thread hole is 0.4mm. Then, at the sewing position -, insert the sewing machine needle with the upper thread 2 inserted into the thread hole from the base material 1 toward the base material 1', and insert the upper thread 2 into the bobbin thread 3 placed on the base material 1' side. After intertwining, the sewing machine needle was pulled out from the base material 1, and then unit sewing was repeatedly performed in which the upper thread 2 and the lower thread 3 were extended from the sewing position to the next sewing position separated by a predetermined interval.
The sewing pitch is 4mm.
残りの基材も同様にして縫製し、上糸２が表出
する基材１の縫い目部分のみに樹脂製テープを接
着して目止めした後、縫製部分で反転して表皮を
得た。下糸３が表出する基材１′は縫製したその
ままの状態である。なお、比較のために下糸も上
糸と同一の糸を用いて同様に縫製し、同様に目止
めされた表皮を形成した。 The remaining base materials were sewn in the same manner, and after sealing by adhering a resin tape only to the seam portion of the base material 1 where the upper thread 2 was exposed, the seam was turned over at the sewn portion to obtain a skin. The base material 1' from which the bobbin thread 3 is exposed is in the same state as it was sewn. For comparison, sewing was carried out in the same manner using the same lower thread as the upper thread, and a sealed skin was formed in the same manner.
これらの表皮をそれぞれ成形型内に配置し、型
締め後発泡ウレタン樹脂を注入して発泡させ、表
皮一体発泡成形を行なつた。成形後型を開いて成
形体を取出し、表皮の縫い目部分を観察した。そ
の結果上糸と下糸に同一の糸を用いたものでは縫
い目から発泡樹脂が漏れていたが、実施例の縫製
方法により縫製した表皮からは発泡樹脂の漏れは
なかつた。 Each of these skins was placed in a mold, and after the molds were clamped, foamed urethane resin was injected and foamed to perform integral foam molding of the skin. After molding, the mold was opened, the molded product was taken out, and the seam portion of the skin was observed. As a result, foamed resin leaked from the seams when the same thread was used for the upper and lower threads, but no foamed resin leaked from the skin sewn using the sewing method of the example.
すなわち本実施例で縫製された表皮では、第３
図および第４図に示すように、基材１′側の針穴
１０は上糸２と下糸３によつて塞がれ、これによ
り樹脂の漏れが防止されたものと考えられる。 That is, in the outer skin sewn in this example, the third
As shown in the drawings and FIG. 4, the needle hole 10 on the base material 1' side was closed by the upper thread 2 and the lower thread 3, and it is considered that this prevented leakage of the resin.
なお、本実施例では断面真円状の下糸３を用い
たが、第５図に示すように長径ａが1.0mm以上の
断面楕円形の下糸３′を用いても同様の効果が得
られる。 In this example, the bobbin thread 3 with a perfectly circular cross section was used, but the same effect can be obtained by using a bobbin thread 3' with an oval cross section and a major axis a of 1.0 mm or more, as shown in FIG. It will be done.
（実施例 ２）
本実施例では、第６図に示すように、縫製の際
に基材１側に厚さ0.6mmのPPフオームからなるテ
ープ４を重ねて縫製したこと以外は実施例１と同
様である。すなわち基材１側にはテープ４と上糸
２が表出し、基材１′側には実施例１と同様に下
糸３が表出している。(Example 2) This example is the same as Example 1 except that a tape 4 made of PP foam with a thickness of 0.6 mm was overlapped and sewn on the base material 1 side during sewing, as shown in Fig. 6. The same is true. That is, the tape 4 and upper thread 2 are exposed on the base material 1 side, and the lower thread 3 is exposed on the base material 1' side, as in Example 1.
この表皮について実施例１のような目止め処理
は行なわず、そのまま表皮一体発泡成形を行なつ
た。この表皮では基材１側の針穴はテープ４によ
つて塞がれたため、目止め処理がなくとも発泡樹
脂の漏れは発生しなかつた。 This skin was not subjected to sealing treatment as in Example 1, and the skin was integrally foam-molded as it was. In this skin, the needle holes on the base material 1 side were closed with the tape 4, so no leakage of the foamed resin occurred even without sealing treatment.
この場合、テープ４は独立気泡から形成されて
いるため、発泡樹脂はテープ４を浸透しない。そ
して縫製によりテープ４は上糸２と基材１によつ
て圧縮される。この時、針穴部分には圧縮力が作
用しないため、圧縮された部分が針穴部分に膨出
して針穴を塞ぐ。またテープの縫い目の両側には
上糸２の絞り力により互いに近接する方向へ付勢
する付勢力が生じ、これによりテープ４は、第７
図に示すように縫い目を覆うように合掌状に閉じ
る。これらの作用により基材１側の針穴からの発
泡樹脂の漏れが防止されたものと考えられる。 In this case, since the tape 4 is formed from closed cells, the foamed resin does not penetrate through the tape 4. Then, the tape 4 is compressed by the needle thread 2 and the base material 1 during sewing. At this time, since no compressive force is applied to the needle hole, the compressed portion swells into the needle hole and blocks the needle hole. In addition, on both sides of the tape seam, the drawing force of the needle thread 2 generates a biasing force that biases the tape 4 in the direction of approaching each other.
Close the palms together to cover the seams as shown in the picture. It is thought that these effects prevented the foamed resin from leaking from the needle holes on the base material 1 side.
すなわち、この実施例２の縫製方法によれば、
２枚の基材に形成された両側の針穴を縫製と同時
に塞ぐことができるため、実施例１の方法に比べ
て工数を一層低減することができる。 That is, according to the sewing method of Example 2,
Since needle holes on both sides formed in two base materials can be closed at the same time as sewing, the number of man-hours can be further reduced compared to the method of Example 1.
第１図〜第５図は本発明の一実施例の縫製方法
に関し、第１図は縫製している状態を示す説明
図、第２図は基材の断面図、第３図は縫製された
表皮の針穴部分の断面図、第４図は第３図のＡ−
Ａ断面図、第５図は下糸の他の態様を示す第３図
相当の断面図である。第６図および第７図は第２
の実施例の縫製方法に関し、第６図は縫製してい
る状態を示す説明図、第７図は成形体の要部断面
図である。第８図〜第１２図は従来の縫製方法に
関し、第８図は縫製時の上糸と下糸の関係を示す
説明図、第９図は縫製された表皮の針穴部分の断
面図、第１０図は第９図のＢ−Ｂ断面図、第１１
図は成形体の要部断面図、第１２図は第９図のＣ
−Ｃ断面図である。
１，１′……基材、２……上糸、３……下糸、
４……テープ、１０……針穴。
Figures 1 to 5 relate to a sewing method according to an embodiment of the present invention, in which Figure 1 is an explanatory diagram showing the sewing state, Figure 2 is a sectional view of the base material, and Figure 3 is the sewing method. A cross-sectional view of the needle hole in the epidermis, Figure 4 is A- in Figure 3.
A sectional view and FIG. 5 are sectional views corresponding to FIG. 3 showing another aspect of the bobbin thread. Figures 6 and 7 are
Regarding the sewing method of the embodiment, FIG. 6 is an explanatory diagram showing the sewing state, and FIG. 7 is a sectional view of the main part of the molded body. Figures 8 to 12 relate to the conventional sewing method; Figure 8 is an explanatory diagram showing the relationship between upper thread and lower thread during sewing; Figure 9 is a sectional view of the needle hole of the sewn skin; Figure 10 is a sectional view taken along line B-B in Figure 9, and Figure 11.
The figure is a sectional view of the main part of the molded body, and Figure 12 is C of Figure 9.
-C sectional view. 1, 1'...Base material, 2... Upper thread, 3... Lower thread,
4... Tape, 10... Needle hole.
Claims (1)
中表に合わせ、ーの縫製位置で糸孔に上糸が挿通
された縫い針を該基材の表面側より裏面側に向か
つて挿通し該裏面側に配置された下糸に該上糸を
絡ませた後該縫い針を該基材の該表面側より引き
抜き次いで該縫製位置から所定間隔隔てた次の縫
製位置まで該上糸および該下糸を延ばす単位縫製
を繰返し行なうことにより該基材を縫製して表皮
とする縫製方法において、 前記下糸の長径を前記上糸の直径の1.2倍以上
としたことを特徴とする表皮一体発泡成形用表皮
の縫製方法。[Scope of Claims] 1. Two sheet-like base materials cut into a predetermined shape are aligned with their inner sides facing each other, and a sewing needle with an upper thread inserted through the thread hole is inserted from the front side of the base materials at the sewing position indicated by -. After inserting the sewing needle toward the back side and entangling the upper thread with the lower thread placed on the back side, the sewing needle is pulled out from the front side of the base material, and then the next sewing position is spaced a predetermined distance from the sewing position. A sewing method in which the base material is sewn to form a skin by repeatedly performing unit sewing in which the upper thread and the lower thread are lengthened until the upper thread reaches the maximum length, wherein the longer diameter of the lower thread is 1.2 times or more the diameter of the upper thread. Features: Sewing method for skin for integral foam molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318866A JPH02164387A (en) | 1988-12-16 | 1988-12-16 | Method for sewing envelope used in outer covering integrated foaming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318866A JPH02164387A (en) | 1988-12-16 | 1988-12-16 | Method for sewing envelope used in outer covering integrated foaming process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02164387A JPH02164387A (en) | 1990-06-25 |
| JPH0434920B2 true JPH0434920B2 (en) | 1992-06-09 |
Family
ID=18103838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63318866A Granted JPH02164387A (en) | 1988-12-16 | 1988-12-16 | Method for sewing envelope used in outer covering integrated foaming process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02164387A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012173562A1 (en) * | 2011-06-15 | 2012-12-20 | Tetra Laval Holdings & Finance S.A. | System and method for in-situ online measurement of hydrogen peroxide concentration |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001246186A (en) * | 2000-03-02 | 2001-09-11 | Tachi S Co Ltd | Skin material for foaming integrally with skin and product integrally foaming with skin |
| KR100467294B1 (en) * | 2001-05-28 | 2005-01-24 | 가부시기가이샤 다치에스 | Sewn cover assembly and product foamed therewith |
| JP2003103076A (en) * | 2001-09-28 | 2003-04-08 | Inoac Corp | Upholstery for headrest |
-
1988
- 1988-12-16 JP JP63318866A patent/JPH02164387A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012173562A1 (en) * | 2011-06-15 | 2012-12-20 | Tetra Laval Holdings & Finance S.A. | System and method for in-situ online measurement of hydrogen peroxide concentration |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02164387A (en) | 1990-06-25 |
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