JP2576761Y2 - Breathable resin substrate - Google Patents
Breathable resin substrateInfo
- Publication number
- JP2576761Y2 JP2576761Y2 JP1993022980U JP2298093U JP2576761Y2 JP 2576761 Y2 JP2576761 Y2 JP 2576761Y2 JP 1993022980 U JP1993022980 U JP 1993022980U JP 2298093 U JP2298093 U JP 2298093U JP 2576761 Y2 JP2576761 Y2 JP 2576761Y2
- Authority
- JP
- Japan
- Prior art keywords
- resin substrate
- thermoplastic
- expanded
- air
- particles
- 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 - Fee Related
Links
Landscapes
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、車両用ドアトリム等に
用いられる通気性樹脂基材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permeable resin base material used for a vehicle door trim or the like.
【０００２】[0002]
【従来の技術】車両用ドアトリム等には、従来から熱可
塑性ビーズ発泡材料をベースとした樹脂基材が広く使用
されている。これはビーズ発泡材料を成形型の内部に充
填し、発泡成形させたものである。しかしこのような従
来の樹脂基材は、発泡粒子が相互に密着しており通気性
がないため、ＰＶＣシートのような表皮をその表面に真
空成形して加飾したい場合には、樹脂基材に真空成形用
の孔を二次加工しなければならない。このために製造コ
ストが高くなるうえ、製品形状によっては均一な真空成
形が行えないという問題もあった。2. Description of the Related Art Resin base materials based on thermoplastic bead foam materials have been widely used for door trims for vehicles and the like. This is obtained by filling the inside of a mold with a bead foam material and subjecting it to foam molding. However, such a conventional resin base material has foam particles adhered to each other and has no air permeability. Therefore, when it is desired to decorate a surface such as a PVC sheet by vacuum forming on the surface thereof, The hole for vacuum forming must be secondarily machined. For this reason, there are problems that the manufacturing cost is increased and that uniform vacuum forming cannot be performed depending on the product shape.
【０００３】[0003]
【考案が解決しようとする課題】本考案はこのような従
来の問題点を解決して、表皮を真空成形するための孔明
け加工を必要とせず、製品形状に関係なく均一な通気性
を確保することができる通気性樹脂基材を提供するため
になされたものである。[Problems to be Solved by the Invention] The present invention solves such a conventional problem, and does not require a perforating process for vacuum forming the skin, thereby ensuring uniform air permeability regardless of the product shape. The purpose of the present invention is to provide a breathable resin substrate that can be used.
【０００４】[0004]
【課題を解決するための手段】上記の課題を解決するた
めになされた本考案の通気性樹脂基材は、完全発泡した
熱可塑性ビーズ発泡粒子の相互間を部分溶着部によって
部分的に表面溶着することにより、0.1cc/cm2/sec 以上
の通気度を持たせたことを特徴とするものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the breathable resin base material of the present invention has a partially welded portion between completely expanded thermoplastic bead foam particles by a partial weld portion. By doing so, the air permeability is 0.1 cc / cm 2 / sec or more.
【０００５】[0005]
【作用】本考案の通気性樹脂基材は、従来品と同様に熱
可塑性ビーズ発泡粒子の集合体からなるものであるた
め、車両用ドアトリム等に使用するに適した強度と弾力
性を備えている。しかも、この熱可塑性ビーズ発泡粒子
は従来品のように互いに完全に密着されたものではな
く、相互間を部分溶着部で部分的に表面溶着することに
よって0.1cc/cm2/sec 以上の通気度を持たせたものであ
るから、ＰＶＣシートのような表皮をその表面に真空成
形して加飾したい場合にも、そのままで使用することが
でき、従来のような通気孔を二次加工する必要がない。Since the air-permeable resin substrate of the present invention is made of an aggregate of expanded thermoplastic beads like the conventional product, it has strength and elasticity suitable for use in door trims for vehicles and the like. I have. Moreover, the thermoplastic beads expanded particles are not completely adhered to each other as in the conventional product, but are partially welded to each other at a partially welded portion to provide an air permeability of 0.1 cc / cm 2 / sec or more. It can be used as it is even when it is desired to decorate the surface by vacuum forming a skin such as a PVC sheet on the surface. There is no.
【０００６】[0006]
【実施例】以下に本考案を実施例によって更に詳細に説
明する。図１は本考案の通気性樹脂基材の断面を拡大し
て示したもので、多数の完全発泡した熱可塑性ビーズ発
泡粒子１が部分溶着部２によって部分的に表面溶着され
ている。このために熱可塑性ビーズ発泡粒子１、１の相
互間に微細な間隙３が残り、0.1cc/cm2/sec 以上の通気
度を持つものとされている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to embodiments. FIG. 1 is an enlarged cross-sectional view of the air-permeable resin substrate of the present invention, in which a large number of fully expanded thermoplastic beads expanded particles 1 are partially surface-welded by a partially welded portion 2. For this reason, a fine gap 3 remains between the thermoplastic bead expanded particles 1 and 1 and has a gas permeability of 0.1 cc / cm 2 / sec or more.
【０００７】この通気度は例えばフラジール型試験機に
より測定されるもので、0.1cc/cm2/sec とは１cm2 当り
１秒間に0.1cc のガスが通過するだけの通気度を意味し
ている。通気度がこれよりも低いと、通気性樹脂基材の
表面に表皮の真空成形を行う場合に十分な真空吸着を行
わせることができない。[0007] This air permeability is measured by, for example, a Frazier tester, and 0.1 cc / cm 2 / sec means air permeability such that 0.1 cc of gas per cm 2 per second is passed. . If the air permeability is lower than this, sufficient vacuum suction cannot be performed when vacuum-forming the skin on the surface of the air-permeable resin substrate.
【０００８】図２、図３はこのような通気性樹脂基材の
製造工程を示したもので、まず図２に示すように、上型
４と下型５よりなるキャビティ内に、熱可塑性ビーズ発
泡粒子１を充填する。一般にビーズ発泡粒子はキャビテ
ィ内で二次発泡されるのであるが、ここでは予め完全発
泡させた熱可塑性ビーズ発泡粒子１がキャビティ内に充
填される。なお、下型５の表面にはシリコンラバー８が
バキュームセットしてある。FIGS. 2 and 3 show the steps of manufacturing such a breathable resin base material. First, as shown in FIG. 2, thermoplastic beads are placed in a cavity formed by an upper mold 4 and a lower mold 5. The expanded particles 1 are filled. Generally, the bead expanded particles are secondarily expanded in the cavity. Here, the thermoplastic bead expanded particles 1 which have been completely expanded in advance are filled in the cavity. Silicon rubber 8 is vacuum set on the surface of the lower mold 5.
【０００９】この実施例では、プロパン、ブタン等の炭
化水素ガスを３〜８％含浸し、５〜15倍の発泡倍率で予
め完全発泡させた粒径が２〜５mm程度のＰＰＯ（ポリフ
ェニリンオキシド）＋ＰＳ（ポリスチレン）の熱可塑性
ビーズ発泡粒子１が使用されている。これをキャビティ
内に充填後、蒸気導入路６より圧力１〜２kg/cm2、温度
120 〜130 ℃の蒸気を上型４の型キャビティ内に導入
し、排気孔７より排出することによって、完全発泡させ
た熱可塑性ビーズ発泡粒子１の表面を0.5 〜1.0秒間程
度加熱溶融させる。このとき、球状の熱可塑性ビーズ発
泡粒子１の表面は部分的に接触しているので、その接触
部分のみが部分的に表面溶着し、部分溶着部２が形成さ
れる。ただし完全発泡済みの熱可塑性ビーズ発泡粒子１
は加熱されてももはやそれ以上発泡することはなく、熱
可塑性ビーズ発泡粒子１の表面全体が溶着してしまうこ
とはない。In this embodiment, 3 to 8% of a hydrocarbon gas such as propane or butane is impregnated and completely foamed beforehand at a foaming ratio of 5 to 15 times, and PPO (polyphenylene) having a particle size of about 2 to 5 mm is used. Thermoplastic bead expanded particles 1 of (oxide) + PS (polystyrene) are used. After filling this into the cavity, pressure 1-2 kg / cm 2 , temperature
By introducing steam at 120 to 130 ° C. into the mold cavity of the upper mold 4 and discharging it through the exhaust hole 7, the surface of the completely expanded thermoplastic beads expanded particles 1 is heated and melted for about 0.5 to 1.0 seconds. At this time, since the surfaces of the spherical thermoplastic bead expanded particles 1 are partially in contact with each other, only the contact portions are partially surface-welded to form the partially welded portions 2. However, fully expanded thermoplastic beads expanded particles 1
No longer foams even when heated, and the entire surface of the expanded thermoplastic bead particles 1 does not weld.
【００１０】その後、図３に示すように下型５の表面の
シリコンラバー８と下型５との間にエアー通路９を通じ
て１〜５kg/cm2の加圧エアーを導入し、熱可塑性ビーズ
発泡粒子１を圧縮成形し、１〜３秒間の冷却後に型から
取り出す。その結果、図１に示したような熱可塑性ビー
ズ発泡粒子１、１の相互間に微細な間隙３を持つ通気性
樹脂基材を得ることができる。実施例ではこの通気性樹
脂基材の厚みは５〜15mmであり、車両用ドアトリム等に
使用するに適した強度と弾力性を備えたものである。Thereafter, as shown in FIG. 3, pressurized air of 1 to 5 kg / cm 2 is introduced between the silicon rubber 8 on the surface of the lower die 5 and the lower die 5 through an air passage 9 to expand the thermoplastic beads. Particles 1 are compression molded and removed from the mold after cooling for 1-3 seconds. As a result, it is possible to obtain a gas permeable resin base material having fine gaps 3 between the thermoplastic bead expanded particles 1 and 1 as shown in FIG. In the examples, the thickness of the air-permeable resin base material is 5 to 15 mm, and has strength and elasticity suitable for use in vehicle door trims and the like.
【００１１】このようにして得られた本考案の通気性樹
脂基材は、熱可塑性ビーズ発泡粒子１、１の相互間に微
細な間隙３が残り、0.1cc/cm2/sec 以上の通気度を持つ
ものであるので、その表面にＰＶＣシートのような表皮
を真空成形して加飾する場合に、従来のような二次的な
孔明け加工を必要としない。The air-permeable resin substrate of the present invention thus obtained has a fine gap 3 between the expanded thermoplastic beads 1 and 1 and a gas permeability of 0.1 cc / cm 2 / sec or more. Therefore, when a surface such as a PVC sheet is vacuum-formed on the surface to decorate the surface, secondary drilling as in the related art is not required.
【００１２】[0012]
【考案の効果】以上に説明したように、本考案の通気性
樹脂基材は完全発泡した熱可塑性ビーズ発泡粒子の相互
間を部分的に表面溶着することにより、0.1cc/cm2/sec
以上の通気度を持たせたものであるから、車両用ドアト
リム等に使用するに適した強度と弾力性を備えている。
また本考案の通気性樹脂基材はＰＶＣシートのような表
皮をその表面に真空成形して加飾したい場合にも従来の
ような通気孔を二次加工する必要がないので、製造コス
トの引下げを図ることができるとともに、製品形状に関
係なく均一な通気性を確保することができる利点があ
る。よって本考案は従来の問題点を解消した通気性樹脂
基材として、その実用的価値は極めて大きいものであ
る。[Effects of the Invention] As described above, the air-permeable resin substrate of the present invention is partially welded between the foamed thermoplastic beads foamed particles to a surface of 0.1 cc / cm 2 / sec.
Since it has the above air permeability, it has strength and elasticity suitable for use in vehicle door trims and the like.
In addition, the air-permeable resin base material of the present invention does not require secondary processing of vent holes as in the conventional case even when it is desired to decorate a surface such as a PVC sheet by vacuum forming the surface thereof, thereby reducing the manufacturing cost. In addition to this, there is an advantage that uniform air permeability can be ensured regardless of the product shape. Therefore, the present invention has an extremely large practical value as a gas-permeable resin substrate which has solved the conventional problems.
【図１】本考案の通気性樹脂基材の断面図である。FIG. 1 is a cross-sectional view of a breathable resin substrate of the present invention.
【図２】実施例における溶着工程を示す断面図である。FIG. 2 is a cross-sectional view showing a welding step in the example.
【図３】実施例における圧縮成形工程を示す断面図であ
る。FIG. 3 is a cross-sectional view showing a compression molding step in an example.
１ 熱可塑性ビーズ発泡粒子 ２ 部分溶着部 1 Thermoplastic bead expanded particles 2 Partially welded part
Claims (1)
(1) の相互間を部分溶着部(2) によって部分的に表面溶
着することにより、0.1cc/cm2/sec 以上の通気度を持た
せたことを特徴とする通気性樹脂基材。1. A fully expanded thermoplastic bead expanded particle.
A gas-permeable resin base material characterized in that air permeability of 0.1 cc / cm 2 / sec or more is provided by partially surface welding between (1) and a partial welding portion (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993022980U JP2576761Y2 (en) | 1993-04-30 | 1993-04-30 | Breathable resin substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993022980U JP2576761Y2 (en) | 1993-04-30 | 1993-04-30 | Breathable resin substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0681728U JPH0681728U (en) | 1994-11-22 |
| JP2576761Y2 true JP2576761Y2 (en) | 1998-07-16 |
Family
ID=12097707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993022980U Expired - Fee Related JP2576761Y2 (en) | 1993-04-30 | 1993-04-30 | Breathable resin substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2576761Y2 (en) |
-
1993
- 1993-04-30 JP JP1993022980U patent/JP2576761Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0681728U (en) | 1994-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980414 |
|
| LAPS | Cancellation because of no payment of annual fees |