JPS6365489B2 - - Google Patents
Info
- Publication number
- JPS6365489B2 JPS6365489B2 JP54156259A JP15625979A JPS6365489B2 JP S6365489 B2 JPS6365489 B2 JP S6365489B2 JP 54156259 A JP54156259 A JP 54156259A JP 15625979 A JP15625979 A JP 15625979A JP S6365489 B2 JPS6365489 B2 JP S6365489B2
- Authority
- JP
- Japan
- Prior art keywords
- upper mold
- molding
- synthetic resin
- mold
- molded product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 9
- 239000000057 synthetic resin Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000010097 foam moulding Methods 0.000 claims 1
- 238000005187 foaming Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Panels For Use In Building Construction (AREA)
Description
【発明の詳細な説明】
本発明は建築用板の製造方法に関し、表面部成
形用の下型1と内面に凹溝2を設けた裏面部成形
用の上型3との間にウレタン樹脂のような発泡性
合成樹脂4を注入して発泡成形し、次いで発泡成
形された発泡合成樹脂成形品5の裏面に上型3の
凹溝2にて形成した突部6の一部を削ることを特
徴とする建築用板の製造方法に係るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a construction board, in which a urethane resin is applied between a lower mold 1 for molding the front surface part and an upper mold 3 for molding the back part having grooves 2 on the inner surface. A foamable synthetic resin 4 such as the above is injected and foam-molded, and then a part of the protrusion 6 formed in the groove 2 of the upper mold 3 is cut off on the back surface of the foamed synthetic resin molded product 5. The present invention relates to a manufacturing method of a characteristic architectural board.
従来ウレタン樹脂発泡体よりなる建築用板を製
造するに当つては、第1図に示すように内面に模
様成形部を有する下型1′内にシリコンゴム型
7′を内装し、下型1′に上型3′を載せ、下型
1′と上型3′との間にウレタン樹脂4′を注入し、
加熱発泡させることにより製造している。しかし
発泡中に発生するガス、又はエアにより裏面にエ
アボイドが発生する。又、発泡圧により、上型
3′が押し上げられ厚みの均一なものが得られず、
厚みを一定にする為に後加工によりサンダー等で
厚み調整を行なうが、この場合スキン層がなくな
り、反りの原因になる等の問題があつた。 Conventionally, in manufacturing architectural boards made of urethane resin foam, as shown in FIG. Place the upper mold 3' on the upper mold 3', inject urethane resin 4' between the lower mold 1' and the upper mold 3',
Manufactured by heating and foaming. However, air voids are generated on the back surface due to gas or air generated during foaming. In addition, the foaming pressure pushes up the upper mold 3', making it impossible to obtain a uniform thickness.
In order to keep the thickness constant, the thickness is adjusted using a sander or the like during post-processing, but in this case there were problems such as the skin layer disappearing and causing warping.
本発明は叙述の点に鑑みてなされたものであつ
て、本発明の目的とするところは上型の凹溝によ
りエアや発泡時に発生するガスを抜くことができ
ると共にエアボイドの発生を減少させることがで
き、しかも成形される建築用板の反りを少なくで
きる建築用板の製造方法を提供するにある。 The present invention has been made in view of the above-mentioned points, and an object of the present invention is to allow air and gas generated during foaming to be removed through the grooves of the upper mold, and to reduce the occurrence of air voids. To provide a method for manufacturing a building board, which can reduce warpage of the formed building board.
以下本発明を実施例により詳述する。1は表面
部成形用の下型であつて、内面に模様成形部を設
けてあり、内面沿うようにシリコンゴム型7を内
装してある。3は裏面部成形用の上型であつて、
第3図のように内面には例えば格子状に凹溝2を
凹設してある。しかして下型1上に上型3を載
せ、第2図のように内部にウレタン樹脂のような
発泡性合成樹脂4を注入して加熱発泡させる。す
ると凹溝2により発泡合成樹脂成形品5の裏面に
突部6が形成される。この突部6がある発泡合成
樹脂成形品5を上型3と下型1から取出した後、
突部6の上面をサンデイング等にて厚みを調整す
るため削つて(第4図のクロスハツチングにて示
す部分)建築用板を製造する。 The present invention will be explained in detail below with reference to Examples. Reference numeral 1 denotes a lower mold for molding the surface portion, and a pattern molding portion is provided on the inner surface, and a silicone rubber mold 7 is installed inside along the inner surface. 3 is an upper mold for molding the back side,
As shown in FIG. 3, grooves 2 are formed on the inner surface in the form of a grid, for example. Then, the upper mold 3 is placed on the lower mold 1, and as shown in FIG. 2, a foamable synthetic resin 4 such as urethane resin is injected into the inside and heated and foamed. Then, a protrusion 6 is formed by the groove 2 on the back surface of the foamed synthetic resin molded product 5. After taking out the foamed synthetic resin molded product 5 with this protrusion 6 from the upper mold 3 and lower mold 1,
A construction board is manufactured by sanding the upper surface of the protrusion 6 to adjust the thickness (the part shown by crosshatching in FIG. 4).
本発明は叙述の如くして製造するので上型の凹
溝によりエア及び発泡時に発生したガス抜きがで
きると共に分散される事により、エアボイドの発
生が減少し又、残つたエアボイドの大きさも小さ
くなり外観が向上するものであり、また成形品の
表面の模様が凹凸の著るしい物の場合、表面積の
表裏の差により反りが発生するが、上型の凹溝の
大きさ及び深さを模様の表面積に近づける事によ
り成型時の反りを防止できるものであり、しかも
裏面の突部をサンデイング等にて削るため突部の
上面にかたまつて残るエアボイド等を確実に除去
できるものであり、さらにサンデイング等により
裏面の突部を削つて厚みの調整した場合に於いて
裏面のスキン層の削られた部分が少ないため、ス
キン層がない為に起こる反りを防止できるもので
あり、さらに上型の凹溝により成型品の裏面がリ
ブ形状となり、強度が向上するという利点を有す
るものである。 Since the present invention is manufactured as described above, air and gas generated during foaming can be vented and dispersed by the concave grooves of the upper mold, thereby reducing the generation of air voids and reducing the size of the remaining air voids. This improves the appearance, and if the surface pattern of the molded product is markedly uneven, warping will occur due to the difference in surface area between the front and back sides. It is possible to prevent warping during molding by making the surface area close to the surface area of the mold, and since the protrusion on the back side is sanded, it is possible to reliably remove air voids etc. that remain clustered on the upper surface of the protrusion. Furthermore, when the thickness is adjusted by sanding the protrusions on the back surface, there is less of the skin layer on the back surface being scraped off, which prevents warping that would otherwise occur due to the lack of a skin layer. The concave grooves give the back surface of the molded product a rib shape, which has the advantage of improving strength.
第1図は従来例の断面図、第2図は本発明の一
実施例の断面図、第3図は同上の上型の斜視図、
第4図は突部を削る状態の説明図であつて、1は
下型、2は凹溝、3は上型、4は発泡性合成樹
脂、5は発泡合成樹脂成形品、6は突部である。
FIG. 1 is a sectional view of a conventional example, FIG. 2 is a sectional view of an embodiment of the present invention, and FIG. 3 is a perspective view of the same upper mold.
FIG. 4 is an explanatory diagram of the state in which the protrusions are shaved, and 1 is the lower mold, 2 is the groove, 3 is the upper mold, 4 is the foamed synthetic resin, 5 is the foamed synthetic resin molded product, and 6 is the protrusion. It is.
Claims (1)
面部成形用の上型との間にウレタン樹脂のような
発泡性合成樹脂を注入して発泡成形し、次いで発
泡成形された発泡合成樹脂成形品の裏面に上型の
凹溝にて形成した突部の一部を削ることを特徴と
する建築用板の製造方法。1. A foamable synthetic resin such as urethane resin is injected between a lower mold for molding the front surface part and an upper mold for molding the back part with grooves on the inner surface, and then foam molding is performed. A method for manufacturing a construction board, which comprises cutting off a part of a protrusion formed by a groove in an upper mold on the back side of a synthetic resin molded product.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15625979A JPS5678951A (en) | 1979-11-30 | 1979-11-30 | Preparation of building panel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15625979A JPS5678951A (en) | 1979-11-30 | 1979-11-30 | Preparation of building panel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5678951A JPS5678951A (en) | 1981-06-29 |
JPS6365489B2 true JPS6365489B2 (en) | 1988-12-15 |
Family
ID=15623879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15625979A Granted JPS5678951A (en) | 1979-11-30 | 1979-11-30 | Preparation of building panel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5678951A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59166920U (en) * | 1983-04-25 | 1984-11-08 | 日本軽金属株式会社 | Panel modification tool |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211338A (en) * | 1975-07-18 | 1977-01-28 | Hitachi Ltd | Multiple carbureter of variable stage type |
-
1979
- 1979-11-30 JP JP15625979A patent/JPS5678951A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211338A (en) * | 1975-07-18 | 1977-01-28 | Hitachi Ltd | Multiple carbureter of variable stage type |
Also Published As
Publication number | Publication date |
---|---|
JPS5678951A (en) | 1981-06-29 |
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