JPH0322284B2 - - Google Patents
Info
- Publication number
- JPH0322284B2 JPH0322284B2 JP57086984A JP8698482A JPH0322284B2 JP H0322284 B2 JPH0322284 B2 JP H0322284B2 JP 57086984 A JP57086984 A JP 57086984A JP 8698482 A JP8698482 A JP 8698482A JP H0322284 B2 JPH0322284 B2 JP H0322284B2
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- mold
- molding
- raw material
- partition
- 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
- 238000005192 partition Methods 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 239000002994 raw material Substances 0.000 claims description 24
- 238000000465 moulding Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 11
- 238000005187 foaming Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 2
- 235000019589 hardness Nutrition 0.000 description 20
- 239000000463 material Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin 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
- B29C44/04—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/0461—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
- B29C44/0469—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other provided with physical separators between the different materials, e.g. separating layers, mould walls
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/751—Mattresses, cushions
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Description
【発明の詳細な説明】
本発明は異硬度クツシヨン体の製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a cushion body of different hardness.
クツシヨン体は、家具、車両等の座席に多用さ
れているが、車両端の座席については、乗員のホ
ールド性向上のために部分的に硬度の異なるクツ
シヨン体が要求されるようになつた。 Cushion bodies are often used for seats in furniture, vehicles, etc., but for seats at the ends of vehicles, cushion bodies with partially different hardnesses are now required to improve the ability to hold occupants.
従来、この異硬度クツシヨン体の製造方法とし
て、あらかじめ成形された硬度の異なる複数のク
ツシヨンブロツクを接着剤により一体とする方
法、硬度の異なるクツシヨン体原料を成形用型内
の所定部に注入して成形する方法、硬度増大をは
かる部分の成形用型内に、クツシヨン体原料が含
浸する含浸部材を貼着し、この成形用型内にクツ
シヨン体原料を注入して含浸硬化部を形成する方
法等が行なわれている。 Conventionally, methods for manufacturing cushion bodies of different hardness include a method in which a plurality of pre-molded cushion blocks with different hardnesses are integrated with an adhesive, and a method in which cushion body raw materials with different hardnesses are injected into a predetermined part in a mold. A method in which an impregnated member impregnated with the material for the cushion body is stuck in a mold for the part whose hardness is to be increased, and the raw material for the cushion body is injected into the mold to form an impregnated hardened part. etc. are being carried out.
しかし、これらの方法は、クツシヨンブロツク
の成形および接着、複数の注入機の必要、含浸部
材の貼着等の工程上の問題および設備費の増加等
による成形コストの増加等の種々の問題を有して
いた。 However, these methods have various problems, such as process problems such as molding and adhering the cushion block, the need for multiple injection machines, and adhesion of the impregnated member, and an increase in molding costs due to increased equipment costs. had.
本発明は、これらの問題を除去するためになさ
れたもので、製造工程の合理化および製造コスト
の低減を可能とした異硬度クツシヨン体の製造方
法を提供するものである。 The present invention was made to eliminate these problems, and provides a method for manufacturing a cushion body of different hardness, which makes it possible to rationalize the manufacturing process and reduce manufacturing costs.
以下添付図面を用いて本発明を具体的に説明す
る。 The present invention will be specifically described below using the accompanying drawings.
第１図は本発明の異硬度クツシヨン体の製造方
法の実施例のうち、座席クツシヨン体の製造に用
いられる成形用型の斜視図を示し、第２図はこの
成形用型の断面を示すものである。 FIG. 1 shows a perspective view of a mold used for manufacturing a seat cushion body in an embodiment of the method for manufacturing cushion bodies of different hardness according to the present invention, and FIG. 2 shows a cross section of this mold. It is.
成形用型１００は上蓋１１０および下型１２０
よりなり、下型１２０のキヤビテイ内面には、キ
ヤビテイをａ１，ａ２，ａ３の三つのキヤビテイ
に区切る板形状の仕切り１３０，１４０を設け、
この仕切り１３０，１４０の上部には凹溝からな
る複数の開口部１３０ａ，１４０ａを形成し、成
形用型１００が閉型された際に、この開口部１３
０ａ，１４０ａにより各キヤビテイａ１，ａ２，
ａ３は互いに連通する構造となされている。 The mold 100 includes an upper lid 110 and a lower mold 120.
The inner surface of the cavity of the lower mold 120 is provided with plate-shaped partitions 130 and 140 that divide the cavity into three cavities a1, a2, and a3,
A plurality of openings 130a, 140a consisting of grooves are formed in the upper part of the partitions 130, 140, and when the mold 100 is closed, the openings 130a, 140a
Each cavity a1, a2, by 0a, 140a
a3 have a structure that communicates with each other.
仕切り１３０，１４０によつて区切られた各キ
ヤビテイは、ａ１が柔らかい部分を成形するキヤ
ビテイ、ａ２およびａ３が硬い部分を成形するキ
ヤビテイである。 In each cavity separated by the partitions 130 and 140, a1 is a cavity for molding a soft part, and a2 and a3 are cavities for molding a hard part.
１５０はベルトホールを示し、クツシヨン体の
製造時に、成形用型内の空気を逃がし、クツシヨ
ン体に欠肉部を生じるのを防ぐためのものであ
る。このベントホールの穴径、位置、数は製品形
状に応じて決定されるが、位置については、製品
の両端になるように設けるのが、原料の伸びを良
くし、キヤビテイ内の隅々まで原料を行き渡らせ
るために望ましい。 Reference numeral 150 denotes a belt hole, which is used to release air in the mold during the production of the cushion body and to prevent the formation of under-walled portions in the cushion body. The diameter, position, and number of vent holes are determined according to the product shape, but it is best to locate them at both ends of the product to ensure that the raw material stretches well and allows the raw material to reach every corner of the cavity. desirable in order to spread the word.
第３図は本発明の異硬度クツシヨン体の製造方
法を説明するもので、前記の成形用型を用い、断
面により概略的に示した製造工程図である。 FIG. 3 is a diagram illustrating a method for manufacturing a cushion body of different hardness according to the present invention, and is a manufacturing process diagram schematically shown in cross section using the above-mentioned mold.
以下この製造工程図に従つて説明する。 The following description will be made according to this manufacturing process diagram.
(イ) 下型１２０の柔らかい部分を成形するキヤビ
テイａ１内に、クツシヨン体の製造原料である
液状発泡性原料１６０（以下原料と記す。）、た
とえばポリウレタンフオーム原料、を注入す
る。(a) A liquid foamable raw material 160 (hereinafter referred to as raw material), which is a raw material for manufacturing a cushion body, such as a polyurethane foam raw material, is injected into the cavity a1 that molds the soft portion of the lower mold 120.
(ロ) 原料１６０を注入後、上蓋１１０を閉める。(b) After injecting the raw material 160, close the top lid 110.
(ハ) 原料１６０は発泡を始め、柔らかい部分を成
形するキヤビテイａ１内を満たし、クツシヨン
体の柔らかい部分１６０ａ１を形成するととも
に、仕切り１３０，１４０に形成された開口部
１３０ａ，１４０ａを通つて隣りのキヤビテ
イ、すなわち硬い部分を成形するキヤビテイａ
２，ａ３内へ流入し始める。(c) The raw material 160 starts foaming and fills the inside of the cavity a1 that molds the soft part, forming the soft part 160a1 of the cushion body, and passes through the openings 130a and 140a formed in the partitions 130 and 140 to form the soft part 160a1 of the cushion body. Cavity, that is, cavity a that molds the hard part
2. It begins to flow into a3.
原料１６０は、既に反応がかなり進行してお
り、このために気泡が幾分成長し、粘度が増大
した状態で狭い開口部１３０ａ，１４０ａを通
過するので、このときに、原料は大きな抵抗を
受けて流れが乱され、気泡の成長が制限され、
気泡の形状が不均一とされる。そして、この状
態となつた原料が硬い部分を成形するキヤビテ
イａ２，ａ３内に流入する。 The reaction of the raw material 160 has already progressed to a considerable extent, and as a result, bubbles have grown somewhat and the raw material 160 passes through the narrow openings 130a and 140a with increased viscosity. flow is disturbed and bubble growth is restricted.
The shape of the bubbles is said to be non-uniform. Then, the raw material in this state flows into cavities a2 and a3 in which hard parts are formed.
(ニ) 硬い部分を成形するキヤビテイａ２，ａ３内
に流入した原料は発泡を完了して、クツシヨン
体の硬い部分１６０ａ２，１６０ａ３を形成す
る。１６０ａ２，１６０ａ３の気泡状態は、柔
らかい部分を成形するキヤビテイａ１内で成形
された、クツシヨン体の柔らかい部分１６０ａ
１と比較すると、前記のように気泡の成長が制
限され、気泡の形状が不均一となり、気泡の膜
厚が厚くなつており、したがつて１６０ａ２，
１６０ａ３の硬度は１６０ａ１より高くなる。(d) The raw material flowing into the cavities a2 and a3 for forming the hard parts completes foaming to form the hard parts 160a2 and 160a3 of the cushion body. The bubble state of 160a2 and 160a3 is the soft part 160a of the cushion body molded within the cavity a1 that molds the soft part.
Compared to 160a2, the growth of the bubbles is restricted as described above, the shape of the bubbles is non-uniform, and the thickness of the bubbles is thicker.
The hardness of 160a3 is higher than that of 160a1.
(イ)〜(ニ)において、成形用型内の空気はベントホ
ール１５０より排気される。 In (a) to (d), the air inside the mold is exhausted from the vent hole 150.
(ホ) 成形用型内で反応を完了したクツシヨン体Ａ
は脱型される。(e) Cushion body A that has completed the reaction in the mold
is demolded.
(ヘ) クツシヨン体Ａは、柔らかい部分１６０ａ１
上に硬い部分１６０ａ２および１６０ａ３が折
り畳まれ、又は切断後重ねられて、最終製品で
ある座席クツシヨン体A′となる。(f) The cushion body A has a soft part 160a1
The rigid parts 160a2 and 160a3 are folded or cut and stacked on top to form the final product, the seat cushion body A'.
この(ヘ)の工程は、第４図の断面図で示すよう
な、従らかい部分Ｂ１の両側部に硬い部分Ｂ
２，Ｂ３を有し、このＢ２，Ｂ３の形状が膨出
した異硬度クツシヨンＢにあつては、必要のな
い工程である。 In this step (F), as shown in the cross-sectional view of FIG.
This step is not necessary for a cushion B having different hardness, in which the shapes of B2 and B3 are bulged.
次に、本発明の異硬度クツシヨン体の製造方法
に用いる成形用型について更に詳しく説明する。 Next, the mold used in the method of manufacturing a cushion body of different hardness according to the present invention will be explained in more detail.
第５図は成形用型の他実施例を示す斜視図、第
６図はこの成形用型の閉型時の仕切り２３０を示
す断面図である。 FIG. 5 is a perspective view showing another embodiment of the mold, and FIG. 6 is a sectional view showing the partition 230 of this mold when the mold is closed.
成形用型２００は上蓋２１０および下型２２０
よりなり、下型２２０には、キヤビテイを柔らか
い部分を成形するキヤビテイａ１と硬い部分を成
形するキヤビテイａ２とに区切る仕切り下部２３
１が形成され、この仕切り下部２３１の上部は凹
凸とされ、上蓋２１０には、仕切り下部２３１に
対応する位置に仕切り上部２３２が形成され、こ
の仕切り上部２３２の下部には、下型に形成され
た仕切り下部２３１の凹凸と逆になるような凹凸
形状が形成され、閉型された際に、開口部２３０
ａを残してこの凹凸が互に嵌合して板形状の仕切
り２３０となる構造とされたものである。尚、２
５０はベントホールである。 The mold 200 includes an upper lid 210 and a lower mold 220.
The lower mold 220 has a partition lower part 23 that divides the cavity into a cavity a1 for molding a soft part and a cavity a2 for molding a hard part.
1 is formed, the upper part of this partition lower part 231 is made uneven, the upper lid 210 is formed with a partition upper part 232 at a position corresponding to the partition lower part 231, and the lower part of this partition upper part 232 is formed in a lower mold. An uneven shape that is opposite to the unevenness of the partition lower part 231 is formed, and when the mold is closed, the opening 230
The structure is such that these concave and convex portions fit into each other, leaving a portion a, to form a plate-shaped partition 230. In addition, 2
50 is a vent hole.
第７図および第８図は成形用型の他実施例を示
す斜視図および一部切欠斜視図で、成形用型３０
０は上蓋３１０および下型３２０よりなり、下型
３２０には、寒冷紗等の網状物からなる仕切り３
３３を係止するための係止部３３１、上蓋３１０
には、係止された仕切り３３３を閉型時に支える
支持部３３２が形成されてなり、仕切り３３３は
係止部３３１に粘着剤を介して係止され、キヤビ
テイ内を柔らかい部分を成形するキヤビテイａ１
と硬い部分を成形するキヤビテイａ２とに区切
る。この仕切りにおいて、開口部は網目よりな
る。尚、３５０はベントホールである。 7 and 8 are perspective views and partially cutaway perspective views showing other embodiments of the mold, in which the mold 30
0 consists of an upper lid 310 and a lower mold 320, and the lower mold 320 has a partition 3 made of a net-like material such as cheesecloth.
33, a locking part 331 for locking the top lid 310
A supporting part 332 is formed to support the locked partition 333 when the mold is closed, and the partition 333 is locked to the locking part 331 via an adhesive, and a cavity a1 is formed to mold the soft part inside the cavity.
and a cavity a2 for molding the hard part. In this partition, the opening is made of a mesh. Note that 350 is a vent hole.
この成形用型３００を用いた異硬度クツシヨン
体の製造方法は、前記と同様に、柔らかい部分を
成形するキヤビテイａ１内に原料を注入して行な
われ、原料が仕切り３３３の網目を通過する際
に、原料の流れが乱され、気泡の成長が制限さ
れ、気泡の形状が不均一になり、この状態で硬い
部分を成形するキヤビテイ内へ流入し、発泡し、
反応を完了して異硬度クツシヨン体が製造され
る。 The method of manufacturing a cushion body of different hardness using this molding die 300 is carried out by injecting the raw material into the cavity a1 for molding the soft part, as described above, and when the raw material passes through the mesh of the partition 333, , the flow of the raw material is disturbed, the growth of bubbles is restricted, the shape of the bubbles becomes uneven, and in this state they flow into the cavity that molds the hard part and foam.
After the reaction is completed, a cushion body of different hardness is manufactured.
尚、仕切り３３３の係止は、柔らかい部分を成
形するキヤビテイ側の係止部３３１に係止され、
原料の発泡時に、仕切り３３３は係止部３３１お
よび支持部３３２により、硬い部分を成形するキ
ヤビテイ側より支えられる。この係止は、必要に
応じてピン等による補助係止が加えられる。 In addition, the partition 333 is locked by a locking part 331 on the cavity side that molds the soft part,
During foaming of the raw material, the partition 333 is supported by the locking part 331 and the support part 332 from the side of the cavity where the hard part is molded. For this locking, auxiliary locking using a pin or the like is added as necessary.
また、この仕切りは、寒冷紗の他に合成樹脂か
らなる格子状物、あるいは金属の金網状物等、
種々のものが用いられるが、製品内部に埋め込ま
れるために、製品に応じて、仕切りの硬さおよび
網目または格子の大きさを決めることが必要であ
る。 In addition to cheesecloth, this partition can also be made of synthetic resin grids, metal wire mesh, etc.
Various types can be used, but in order to be embedded inside the product, it is necessary to determine the hardness of the partition and the size of the mesh or lattice depending on the product.
第９図は、更に別の成形用型の実施例を示し、
下型４２０は、イに示すように４２１と４２２に
分割され、この分割部に寒冷紗の仕切り４３０が
挿入された後に、ロで示すように分割部が合わさ
れ、柔らかい部分を成形するキヤビテイａ１と硬
い部分を成形するキヤビテイａ２とに区切られて
なる。仕切り４３０の製品よりのはみ出しは、製
品の成形後除去される。 FIG. 9 shows yet another embodiment of a mold,
The lower mold 420 is divided into 421 and 422 as shown in A, and after a cheesecloth partition 430 is inserted into this divided part, the divided parts are brought together as shown in B, and a cavity a1 for molding a soft part and a hard part are formed. It is divided into a cavity a2 for molding the part. The protrusion of the partition 430 from the product is removed after the product is molded.
以上の成形用型の他に、仕切りが、開口部を有
する板形状体に網状物あるいは格子状物を係止し
て構成される成形用型、すなわち、第１図または
第５図に示した成形用型において、仕切り１３
０，１４０および２３０に網状物等を係止した成
形用型も、製品形状等に応じて適宜用いられる。 In addition to the above-mentioned molds, there are molds in which the partition is constructed by locking a net-like material or a lattice-like material to a plate-shaped body having an opening, that is, as shown in FIG. 1 or FIG. In the mold, the partition 13
Molding molds in which net-like materials or the like are attached to the 0, 140, and 230 parts are also used as appropriate depending on the shape of the product.
更に、仕切りは、成形用型内に溝等を設けて嵌
め込み、および、取り外し自由となるべく構成す
ることも可能である。 Furthermore, the partition can be constructed by providing a groove or the like in the mold and fitting it into the mold, and allowing it to be freely removed.
このように、本発明による異硬度クツシヨン体
の製造方法は、成形用型のキヤビテイが、開口部
を有する仕切りによつて、柔らかい部分を成形す
るキヤビテイと硬い部分を成形するキヤビテイと
に区切られ、この柔らかい部分を成形するキヤビ
テイ内に注入さた原料が、開口部通過時に流れが
乱され、気泡の成長が制限され、気泡の形状、配
列が不均一にされ、この状態で、硬い部分を成形
するキヤビテイ内に流入して、発泡および反応を
完了してクツシヨン体を製造するもので、硬い部
分を成形するキヤビテイ内で成形された部分は、
柔らかい部分を成形するキヤビテイ内で成形され
た部分と比較すると、気泡の成長が制限され、気
泡の形状および配列が不均一で、気泡の膜厚が厚
くなつており、したがつて、この部分の硬度が他
の部分よりも高いものとなる。 As described above, in the method of manufacturing a cushion body of different hardness according to the present invention, the cavity of the mold is divided by a partition having an opening into a cavity for molding a soft part and a cavity for molding a hard part, When the raw material injected into the cavity that molds this soft part passes through the opening, the flow is disturbed, the growth of bubbles is restricted, and the shape and arrangement of the bubbles are made non-uniform.In this state, the hard part is molded. The material flows into the cavity to complete foaming and reaction to manufacture the cushion body, and the part molded in the cavity that molds the hard part is
Compared to the part molded in the cavity that molds the soft part, the growth of the bubbles is restricted, the shape and arrangement of the bubbles are non-uniform, and the film thickness of the bubbles is thicker, thus making the part softer. The hardness is higher than other parts.
したがつて、本発明の製造方法は、従来の製造
方法において必要とされる、別工程による複数の
クツシヨンブロツク成形、含浸材の貼着、複数の
注入機を必要とせずに、一般のクツシヨン体の製
造と同様に一回の原料注入で、しかも複雑な処理
を施すことなく異硬度クツシヨン体を製造するこ
とができ、極めて合理的に、かつ低コストで異硬
度クツシヨン体が製造できる効果を有する。 Therefore, the manufacturing method of the present invention does not require multiple cushion block molding in separate steps, adhesion of impregnating material, or multiple injection machines, which are required in conventional manufacturing methods, and can be used to manufacture ordinary cushions. Similar to the production of body parts, cushion bodies of different hardness can be manufactured by injecting raw materials once and without any complicated processing. have
第１図および第２図は本発明の異硬度クツシヨ
ン体の製造方法に用いる成形用型の一実施例の斜
視図および断面図を示し、第３図は製造方法を説
明する工程図、第４図は、本発明の製造方法によ
り製造された異硬度クツシヨン体の斜断面図、第
５図および第６図は他実施例に用いる成形用型の
斜視図および断面図、第７図および第８図は他実
施例に用いる成形用型の斜視図および一部切欠斜
視図、第９図は他実施例に用いる成形用型の下型
斜視図である。
１００，２００，３００……成形用型、１１
０，２１０，３１０……上蓋、１２０，２２０，
３２０……下型、１３０，１４０，２３０，３３
３，４３０……仕切り、１３０ａ，１４０ａ，２
３０ａ……開口部、１５０，２５０，３５０……
ベントホール、１６０……原料、ａ１……柔らか
い部分を成形するキヤビテイ、ａ２，ａ３……硬
い部分を成形するキヤビテイ。
1 and 2 show a perspective view and a sectional view of an embodiment of a mold used in the method of manufacturing a cushion body of different hardness according to the present invention, FIG. 3 is a process diagram explaining the manufacturing method, and FIG. The figure is a perspective sectional view of a cushion body of different hardness manufactured by the manufacturing method of the present invention, FIGS. 5 and 6 are perspective views and sectional views of molds used in other examples, and FIGS. 7 and 8 The figures are a perspective view and a partially cutaway perspective view of a mold used in another embodiment, and FIG. 9 is a perspective view of the lower mold of the mold used in another embodiment. 100, 200, 300...molding mold, 11
0,210,310...Top lid, 120,220,
320...Lower mold, 130, 140, 230, 33
3,430...Partition, 130a, 140a, 2
30a... opening, 150, 250, 350...
Vent hole, 160...Raw material, a1...Cavity for molding soft parts, a2, a3...Cavities for molding hard parts.
Claims (1)
をを注入してクツシヨン体を成形する製造方法に
おいて、該キヤビテイは開口部を有する仕切りに
よつて、柔らかい部分を成形するキヤビテイと硬
い部分を成形するキヤビテイとに区切られ、この
柔らかい部分を成形するキヤビテイ内に前記の原
料を注入して閉型し、発泡を始めた原料が、前記
の開口部を通過時に、流れが乱され、気泡の成長
が制限され、気泡が不均一にされて、硬い部分を
成形するキヤビテイ内に流入して反応を完了する
ことにより、硬い部分を成形するキヤビテイ内で
成形された部分を、他部分よりも硬くすることを
特徴とする異硬度クツシヨン体の製造方法。1 In a manufacturing method in which a cushion body is molded by injecting a liquid foamable raw material into a cavity of a molding mold, the cavity is separated by a partition having an opening into a cavity for molding a soft part and a molding for a hard part. The raw material is injected into the cavity that molds the soft part, the mold is closed, and when the raw material that has started foaming passes through the opening, the flow is disturbed and the growth of bubbles occurs. is restricted and the air bubbles are made non-uniform and flow into the cavity that molds the hard part to complete the reaction, making the part molded within the cavity molding the hard part harder than other parts. A method for manufacturing a cushion body of different hardness, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57086984A JPS58203027A (en) | 1982-05-22 | 1982-05-22 | Manufacture of cushion body of varied hardness and force therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57086984A JPS58203027A (en) | 1982-05-22 | 1982-05-22 | Manufacture of cushion body of varied hardness and force therefor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2193383A Division JPH0373321A (en) | 1990-07-20 | 1990-07-20 | Mold of different hardness cushioning body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58203027A JPS58203027A (en) | 1983-11-26 |
| JPH0322284B2 true JPH0322284B2 (en) | 1991-03-26 |
Family
ID=13902124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57086984A Granted JPS58203027A (en) | 1982-05-22 | 1982-05-22 | Manufacture of cushion body of varied hardness and force therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58203027A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6243715U (en) * | 1985-09-03 | 1987-03-16 | ||
| CA1309220C (en) * | 1985-12-25 | 1992-10-27 | Tetsuo Kita | Process for producing laminated resin foam and mold therefor |
| FR2598967B1 (en) * | 1986-05-23 | 1988-11-25 | Roth Sa Freres | PROCESS FOR MANUFACTURING POLYURETHANE FOAM MOLDED MATTRESSES COMPRISING SEVERAL DIFFERENT FLEXIBLE AREAS AND MATTRESSES THUS PRODUCED |
| JPS63120957U (en) * | 1987-01-30 | 1988-08-05 | ||
| JPS63120956U (en) * | 1987-01-30 | 1988-08-05 | ||
| DE3813587A1 (en) * | 1988-04-22 | 1989-11-02 | Bayer Ag | METHOD FOR PRODUCING FOAM PADS |
| ES2260131T3 (en) | 2000-08-11 | 2006-11-01 | Tokai Kogyo Kabushiki Kaisha | METHOD OF MANUFACTURE OF A PILLOW MEMBER. |
| JP4932534B2 (en) * | 2007-02-27 | 2012-05-16 | 株式会社イノアックコーポレーション | Polyurethane foam mold |
| JP5117161B2 (en) * | 2007-10-26 | 2013-01-09 | 株式会社イノアックコーポレーション | Foam molding method |
| JP6413403B2 (en) * | 2014-07-03 | 2018-10-31 | トヨタ紡織株式会社 | Mold for foam molded article and foam molded article |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930448A (en) * | 1972-07-20 | 1974-03-18 | ||
| JPS5619734A (en) * | 1979-07-25 | 1981-02-24 | Tokai Kogyo Kk | Preparation of composite cushion body for sheet of seat and the like |
-
1982
- 1982-05-22 JP JP57086984A patent/JPS58203027A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930448A (en) * | 1972-07-20 | 1974-03-18 | ||
| JPS5619734A (en) * | 1979-07-25 | 1981-02-24 | Tokai Kogyo Kk | Preparation of composite cushion body for sheet of seat and the like |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58203027A (en) | 1983-11-26 |
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