TW592928B - Elastic body and heat proof cushion material for molding press containing the same - Google Patents

Abstract

To provide an elastic body of which quality is maintained without bleeding even if used under high temperature and high pressure. An elastic body comprises an elastic material, wherein said elastic body comprises inside an additive which adsorb components which can bleed from said elastic body under heating and/or pressure.

Description

592928 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to an elastomer and a heat-resistant buffer material for compression molding containing the same. [Prior art] The heat-resistant buffer material for compression molding is used in, for example, paper for printed circuit boards. Multi-layer laminates or glass epoxy laminates, or architectural plywood such as melamine resins, benzene resins, and other molded materials are formed into flat sheet-like sheets containing a main component of synthetic resin (prepreg made of resin) In recent years, it has also been used in cell assembly steps for liquid crystals. Generally speaking, the heat-resistant cushioning material for compression molding used in this aspect is responsible for absorbing the unevenness, deformation, thick spots, etc. of the hot plate or mirror panel, and uniformly transmitting pressure and heat to the forming prepreg ( Phase B status) An important function on the whole surface. That is, in the thermal compression step, the prepreg is gradually reduced in hardness after being temporarily reduced in viscosity and returned to a liquid state by heating. Therefore, heat and pressure from the hot plate are evenly transmitted during molding. Type: Type, the entire surface of the prepreg sheet. A metal mirror & is placed across the release film or copper pig, and a buffer material is interposed between the hot plate and the metal mirror panel. It is customary to use buffer paper such as kraft paper in combination with molding conditions to overlap multiple pieces ... In order to withstand heat and pressure during use, the pulp will be damaged and brittle. For those with more severe molding conditions, Only 3 592928 can be used a single time. Therefore, it is necessary to replace the kraft paper every time. In addition, the number of pieces to be prepared to match the molding conditions must be calculated in advance, and it cannot be mechanized even when it is set on the compressor, so it will cause a problem of labor-saving. In addition, a large amount of kraft paper must be stocked, and an air conditioner that is not affected by outside air (moisture) must be installed during the stocking period. This is very troublesome. In addition, paper powder will be scattered from the cut surface of the kraft paper, which will cause product defects. influences. .- Therefore, instead of kraft paper, a heat-resistant fiber such as a cushioning material or an aromatic t-type fiber laminated with a rubber body has been developed, which is knitted with an acupuncture method to form an integrated cushioning material. The molding conditions can be used different times or hundreds of times. -The above-mentioned laminated cushioning material whose main body is rubber or aromatic polyamide fiber and other heat-resistant fibers are knitted by needle punching to form an integrated cushioning material, which can withstand repeated use under high temperature and pressure. However, with the recent popularization and miniaturization of home appliances-product miniaturization, high performance, and personal computers, the performance and quality required for printed circuit boards have become increasingly stringent. With this rubber-based cushioning material, although it is rich in cushioning at the early stage of use, it can be used superiorly, but when it is repeatedly used at high temperature and pressure, once the rubber is rapidly brittle, the buffering volume will also be rapidly reduced. However, there is a concern that there may be defective products in the laminated board. In addition, the recent knowledge has not caused problematic quality, and it will also result in unsatisfactory quality upgrades due to the increase in the number of wirings between pins, resulting in unusability. On the other hand, a cushion material with rubber as the main body, or aromatic poly 4 592928 amine fiber and other heat-resistant fibers is laminated, and the hair reduction buffer village woven by needle punching method can withstand 75 high temperature and high pressure. As a result of the repeated use of the number of times, with the substrate generated during the formation of μ movement, and caused by the concave mold of the buffer material and felt-shaped body cushioning 篁 reduce the 'preparation of the prepreg during molding The compactness will be one of the phenomena on the surface of the laminated board that does not cause a problem in the known technology. In the nearest pin of the wiring board, the requirements cannot be increased. This reason will also cause buffering. Caishou phenomenon occurs. Even recently, the sales volume of notebook PCs has been astounding. The compression molding "speaking rubber" and "asbestos" used in the LCD panel unit assembly steps will cause the following problems. Fluorine rubber does not need to be treated after use because it will produce toxic gases. Silicone wool can be used only a few times, so the production cost will be uneven and the thickness will be uneven. Therefore, pressure spots will be generated. Because low-molecular-weight siloxane will be generated, the oiliness produced by it will cause product defects. Impact issues. In view of this, in order to achieve the above-mentioned requirements of the laminated board, the inventor has developed a point of capturing the main body of the rubber and the advantages of a felt cushioning material using heat-resistant fibers, so that the core material has a moderate gap.俾 A new type of cushioning material that can maintain pressure equalization and temperature rise for a long time of immersion, and filed a patent application (Japanese 2000-283715). For integrated users, but the shape of the resin buffer material is gradually degraded, and the micro bumps are sufficient to reduce the increase in wiring life. The buffer material method is used to improve the consumption. Patent No. 5 592928 for rubber layer protection and stability. However, although the above-mentioned cushioning material has a high-quality cushioning amount required to achieve the laminated board in the initial use period, it can exert pressure equalization and stability on the prepreg. Temperature increase, but if the anti-aging agent (antioxidant) oozes out of the rubber layer with the increase of the number of uses (hereinafter referred to as "bleeding"), the second gap will be blocked, which will meet the quality and the number of uses Aspects will cause problems. -[Summary of the Invention] Therefore, the problem of the present invention is to solve the above-mentioned problems, and to provide an elastic body that does not cause bleeding phenomenon even when it is used under two temperature and high pressure, and can maintain the quality. As a result of intensive research to solve the above-mentioned problems, the inventors have found that by adding an additive that absorbs components (such as an anti-aging agent (antioxidant) etc.) exuded from the elastomer by heating and / or pressing, Then completed the present invention. " In other words, "The present invention is related to the above-mentioned elastomer, which is an elastic body containing an elastic material" is contained in the elastic towel which can absorb components exuding from the φ elastomer with heating and / or pressure. additive. Furthermore, the present invention relates to the above-mentioned elastomer, wherein the elastic material has financial and thermal properties. -Furthermore, the present invention relates to the above-mentioned elastomer, wherein the glass transition point of the elastic material is below room temperature. 1 Furthermore, the present invention relates to the above-mentioned elastomer, wherein the elastic material is # 6 592928 胶 0 Furthermore, This invention relates to the said elastomer, Comprising: The said elastic material has the porosity which dispersed the several space | gap. Furthermore, the present invention relates to the above-mentioned elastomer, wherein the additive is a group consisting of siliceous earth, calcium silicate and activated carbon, and at least 1 cat, two or more porous materials β or

Furthermore, the present invention relates to the aforementioned elastomer, wherein the amount of the additive is within a range of 5 wt% to 50 wt% of the weight of the elastomer. Furthermore, the present invention relates to the above-mentioned elastic body, wherein the elastic material expands and maintains a void in the thickness direction as the temperature in the molding step increases. Furthermore, the present invention relates to the above-mentioned elastomer, and further comprises a woven fabric and / or a non-woven fabric having heat resistance. In addition, the present invention relates to a heat-resistant cushioning material for compression molding, which includes a core material containing the above-mentioned elastomer.

a The elastomer of the present invention which has an additive capable of adsorbing exuding components, and captures these constituents with the additives, even if the high temperature and high pressure do not cause the second phenomenon. In addition, the elastomer of the present invention not only has the effect of preventing oozing out due to adsorption, but also has the effect of reinforcing the structure by the presence of hard solid additives in the elastomer and around the voids in the elastomer. Heating does not cause the elastomer and the voids of the elastomer to collapse, and can maintain its shape. The heat-resistant cushioning material for compression molding of the present invention improves the rigidity of the cushioning material by using the above-mentioned elastic body, and can maintain the gap even under compression, which can maintain the thickness while maintaining a sufficient cushioning amount for a long period of time. Sex

7 592928 In addition, the heat-resistant cushioning material for molding and compression of the present invention, when a material having a glass transition point below room temperature, is used because the soft rubber-like state can be maintained in the entire temperature range of the heating molding process. Therefore, the unevenness, deformation, and thick spots of the hot plate or mirror panel will be absorbed, and uniform pressure can be transmitted to the front of the compression pre-soak body for a long time, which can fully cope with the manufacture of high-quality products. By using the felt-shaped cushioning material to form an integrated felt-shaped cushioning material, the amount of heat movement can be adjusted by changing the basis weight, and by maintaining the gap in the elastomer, φ can be repaired. The temperature spot in the hot plate is being heated, and uniform heat is conducted to the prepreg. [Embodiment] _ Next 'describes an embodiment of the present invention. The elastic material used in the present invention has heat resistance, and only needs to be used under molding and compression conditions (for example, the molding conditions of glass epoxy laminates, temperature: 180 ~ 21 °. (:, Pressure: 3 ° ~ 50kg / cm2; molding conditions of paper phenol laminated board; temperature: 160 ~ 190 ° C, pressure: 80 ~ 120kg / cm2; compression conditions of liquid crystal cell assembly step, temperature: 160 ~ 180 ° C, pressure: 3 ~ 5kg / cm2) can be any condition. In addition, although the glass transition point is below room temperature, but it is best to have a soft rubber-like in the entire temperature range of the thermoforming process. The temperature rise during the process will swell in the thickness direction, but it is best to maintain the voids in the elastomer. Such elastomers are most like: polyisopropylene rubber, styrene butadiene rubber, polybutadiene rubber, chlorine Acrylic rubber, propylene butadiene rubber, hydrogenated butadiene rubber, hydroxylated butadiene rubber, butyl rubber, ethyl acetate "

Those within range are preferred. Ethylene-propylene rubber, acrylic rubber, fluororubber, and silicon In the elastomer of the present invention, additives that can absorb 0 to 77 of the elastomer with heating are only required to have heat resistance and achieve the effect of the invention It can be used. It is best to add such additives as porous diatomaceous earth, calcium silicate, activated carbon and the like. The maximum amount is based on the consideration of sufficient adsorption effect, processability of elastomer flakes, and buffering amount. It is easy to use, for example, the range of 5wt% to 50wt% of the weight of the elastic material, especially the range of 5wt% to 40wt%. The elastomer of the present invention may contain, for example, anti-aging agent (antioxidant), silicon oxide, Carbon black, vulcanizing agent, and other components that normally bleed out with heating are typically considered to be anti-aging agents (antioxidants) such as substituted monophenylamine (Naguaird ^ VUnifoyal Chem), DCD (Seiko Chemical) Wait. Under the premise of improving the dimensional stability and bubble retention during use, the elastomer of the present invention can be added in accordance with the needs of using a heat-resistant heat-resistant woven fabric or a non-592928 woven fabric. Heat-resistant woven and non-woven materials can be made of glass fiber, PBO fiber, and aromatic polyamide fiber. In order to obtain the elastomer of the present invention, the aforementioned additives may be added to the elastic material, and the plastic foaming agent may be uniformly dispersed in the heat-resistant elastic material. After being formed into a sheet of a certain thickness, the elastomer of the present invention can be obtained by vulcanization.

When the elastomer of the present invention is used as a heat-resistant cushioning material for compression molding, although the elastomer can be used directly, it can also be used on both sides, one side, or in the middle. Felt-like cushioning material consisting of base fabric and mat fiber layer made of heat-resistant fibers such as hydrazone and used as a core material. It is desirable to adjust the temperature rise rate in compression molding by changing the basis weight of such a felt-like cushioning material containing heat-resistant fibers.

The heat-resistant fibers used in the base cloth and the mat should only be used under molding and compression conditions (for example, the molding conditions for glass epoxy laminates, temperature: 丨 8 〇 ~ 2 1 〇 ° C, pressure: 30 ~ 50kg / cm2; molding conditions of paper phenol laminated board, temperature: 16 ~ 19 ° C, pressure: 80 ~ 120kg / cm2; compression conditions of liquid crystal cell assembly step, temperature: 160 ~ 180C, pressure: 3 ~ 5kg / cm2 ), Heat-resistant fibers that can be used stably for a long time, any kind of fibers can be used, such as: aliphatic polyamide fibers, polyethylene terephthalate fibers, polydiphenylene sulfide fibers, poly The ether ether copper fiber, the aromatic polyamide fiber, and the like are appropriately selected. The lamination of the elastomer and the wool-like cushioning material of the present invention, if the elastic material is vulcanized, the heat-resistant point film can be used for the lamination, and it can have both if you add 10 592928 j. Vulcanization is performed by compression processing. In addition, when the condition of the felt-shaped cushioning material is laminated on the double-sided, single-sided, or middle surface, the heat-resistant, stainless steel, heat-resistant fabric, heat-resistant film, metal Heat-resistant sheet materials, such as halls, are adhered by heat-resistant adhesives or by self-adhesion under heat and pressure. In this case, because the heat-resistant sheet material will form a film to block ventilation, not only can it be automatically transported in accordance with the adsorption pad in a labor-saving manner, it can also prevent the surface of the felt-like cushion material from fluffing or depilating. . [Examples] Hereinafter, the present invention, the elastomer, and the heat-resistant cushioning material for compression molding will be described in detail using examples. However, the present invention is not limited to this. [Example 1] An elastic rubber material that has a glass transition point below room temperature and expands in the thickness direction as the temperature rises during heating molding ^ In the rubber > 'Mixed 5wt% porous material' Algae (Brand name: Lagiolard (* 睪)), mixed with a plastic foaming agent that is moderately dispersed in the gap in the rubber, to make an elastomer that composes the thickness of the material The (rubber) sheet is equipped with a felt cushioning material composed of heat-resistant fiber such as aromatic polyamidine having a surface density of 450 g / m2 on both sides, and then it is put into a measuring meter and adjusted by adjustment. Thickness (adhesive conditions: 20000, 10 kg / cm ^ 15 40%, when the elastic body and felt cushioning material are bonded together to obtain a heat-resistant cushioning material for compression molding of the elastomer of the present invention with a surface density 11 592928 [Example 2]

30wt% Lagiolarde (brand name, transliteration) is mixed with ethyl propylene acrylic rubber with a glass transition point below room temperature and an elastic rubber material that expands in the thickness direction as the temperature rises during the heating process. And mixed with a plastic foaming agent that is moderately dispersed in the gaps in the rubber to produce an elastomer (rubber) sheet with a thickness of the core material. On both sides, a wool-number buffer material composed of heat-resistant fibers such as aromatic polyamidine having a surface density of 45 g / m2 is arranged. Then, it is put into a measuring meter when performing heat compression processing, and is adjusted by Thickness (adhesive conditions: 200 ° C, 10kg / cm2, 15 minutes, thickness: 3.0mm), while ensuring a void ratio of 40%, and attaching the elastomer and the wool number cushioning material at the same time, to obtain a surface density of 2190g / m2 The heat-resistant cushioning material for elastic molding of the elastomer of the present invention. [Example 3]

50wt% Lagiolard (trade name, transliteration) is mixed into the vinyl acrylic rubber of the elastic rubber material whose glass transition point is below room temperature and the temperature rises with the heating molding process and expands in the thickness direction, and mixes Based on the plastic foaming agent that is moderately dispersed in the gap in rubber, an elastomer (rubber) sheet with a thickness of 1.0 mm constituting the core material is produced. A felt cushioning material composed of heat-resistant fibers such as aromatic polyamines having a surface density of 45 g / m2 is arranged on both sides, and then placed in a measuring meter when the heat compression process is performed, and the thickness is adjusted by ( Adhesive conditions: 20 (rc, 10 kg / cm2, Ηminutes, thickness: 3.0mm), while ensuring that the empty 陴, 玄 士 ## person two 眯 rate is 40%, when the elastic body and felt cushion material are attached at the time In order to obtain a heat-resistant cushioning material for compression molding of the elastomer of the present invention using a table library "宓 Λ / 2 ^ ± 2250g / m, the outer diameter is 12 592928. [Example 4] The glass transition point is below room temperature 'and varies with Gasco, the temperature rises during the thermoforming process, and the elastic acrylic material that expands in the thickness direction is thickened with ethylene acrylic rubber. 15 wt% Lagiolard (trade name, stand ^ A ^ 9 # ) And mixed with a plastic foaming agent that is moderately dispersed in the gap in the rubber to make an elastomer (rubber) sheet with a thickness of 0.5 mm that forms the core material. On both sides, a sheet A felt cushioning material of φ made of heat-resistant fibers such as aromatic polyamide with a density of 45 g / m2, and then When performing heating and compression processing, put it into the meter, and adjust the thickness (adhesive conditions: 200 ° C, 10kg / cm2, 15 minutes, thickness * degree: 2.5mm), and ensure that the porosity is 20%, and attach it at the same time Elastomers and matte. Buffer material 'to obtain a heat-resistant buffer material for compression molding using the elastomer of the present invention with a surface density of 1485 g / m2.-[Example 5] _ The glass transition point is below room temperature, and with the heating molding process In the fluorinated propionate rubber which is an elastic rubber material which expands in the thickness direction in the middle temperature, 30 wt% of Laguiolade (trade name, transliteration) is mixed, and the rubber is dispersed in the space moderately according to the rubber. The plastic foaming agent is used to make an elastomer (rubber) sheet with a thickness of 1.0 mm, which is a core material. On both sides, it is equipped with heat-resistant fibers such as aromatic polyamines with a surface density of 450 g / m2. The felt cushioning material is then placed into a measuring instrument during the heat compression process, and the thickness is adjusted (adhesion conditions: 200 °, 〇kg / cm2, 15 minutes, thickness: 3.0mm) to ensure the gap. The rate is 40%, and the elastomer and the felt are attached at the same time. 13 5 92928 cushioning material 'to obtain a heat-resistant cushioning material for compression molding using the elastomer of the present invention having a surface density of 2150 g / m2. [Comparative Example 1] The glass transition point is below room temperature and becomes thicker as the temperature during heating molding increases. In a direction-expanding elastic rubber material of vinyl acrylic rubber, 3 wt% of Lagiolard (trade name, sound beep sJ 'and mixed with

An elastic (rubber) sheet having a thickness of 1.0 mm constituting the core material is produced by appropriately dispersing the plastic foaming agent in the space in rubber. On the surface of i ^ /, § is followed by a hair drum cushioning material composed of heat-resistant fibers such as aromatic polyamidine with a surface density of 450 g / m2, and then placed in the measuring leaf when performing heating and compression processing, by adjusting Thickness (adhesive conditions: 200. (: 10 kg / cm2, 15 minutes, thickness: 3.0 mm), while ensuring a void ratio of 40%, and attaching an elastomer and a felt cushioning material at the same time, to obtain the surface density Heat-resistant cushioning material for compression molding of the elastomer of the present invention at 1990 g / m2. [Comparative Example 2]

55wt% Lagiolard (commercial name, transliteration) is mixed in the vinyl acrylic rubber of glass elasticity material which is below room temperature, and which expands in the thickness direction as the temperature rises during the heating molding process. Based on the plastic foaming agent that is moderately dispersed in the gap in the rubber, an elastomer (rubber) sheet with a thickness of 1.0 mm constituting the core material is produced. A felt cushioning material made of heat-resistant fiber such as aromatic polyamidine having a surface density of 450 g / m2 is arranged on both sides, and then it is put into a measuring meter when the heating and compression processing is performed, and the thickness (adhesive conditions) : 20 (rc, 10 kg / cm2, 15 minutes, thickness 14 592928 degrees: 3.0 mm), while securing the porosity of 400 / μ thousand / G u, it is obtained by bonding the elastomer and the felt cushioning material. The heat-resistant cushioning material for compression molding of the elastomer of the present invention with a surface density of 0 ug / m is used. [Comparative Example 3] The glass-filled transition point is below room temperature, and increases with the temperature in the process of heating molding. Inflatable Bullet * Resilient resilience 14 Fluoroacrylic Acrylic Rubber, a rubber material, is mixed with a plastic foaming agent in the gap, which is moderately divided into degrees, to make the thickness of the core material1 Handle l.Omm thin sheet of elastomer (rubber). On both sides of the sheet is equipped with a wool-viewing buffer wire made of heat-resistant fibers such as aromatic polyamines of 450 g / m with a surface density of 2 4 degrees and 450 g / m. When the heating and compression processing is performed, it is placed in the gauge and the thickness is adjusted. Conditions: 200 C, 10 kg / cm, 15 minutes, thickness: 30 mm), 40% void release rate, at the same time, the elastomer and felt cushioning material are attached, and the surface density is 2180. g / m2 of heat-resistant cushioning material for compression molding of the elastomer of the present invention. The results of the physical properties and performance evaluations for the examples of the embodiments of the present invention 1-5 and the comparative examples 1 to 3 of the current ones are shown in Table 1 and Table 1. Material Lagiola Void Thickness Table Density Rubber + Lagioo Felt (wt%) _ί%) _ One (mm) (Ρ '/ τπ ^ Rad (g / m2) (g / m2) Example 1 Ethylene acrylic acid 5 40 3 Vft / m) 2000 1100 900 Example 2 Acetyl acrylic acid 30 40 3 2190 1290 900 15 592928 Example 3 Ethylene acrylic acid 50 40 3 2250 1350 900 Example 4 Ethylene acrylic acid 15 20 2.5 1485 585 900 Example 5 Fluorinated acrylic acid 30 40 3 2150 1250 900 Comparative example 1 Ethylene acrylic acid 3 40 3 1990 1090 900 Comparative example 2 Ethylene acrylic acid 55 40 3 2260 1350 900 Comparative example 3 Acrylic acid 0 40 3 2 180 1280 900 [ Table 2] Concentration 1. Repeated compression conditions: 200 ° 40 kg / cm · 2, and the state of oozing and void retention were evaluated. 1 cycle: heating up for 15 minutes + pause for 45 minutes + heating and cooling for 15 minutes " > pressure release and opening for 15 minutes repeat ※ 2. Exudation state

Table 2: Filtration test results seepage state ※ 2 Void retention state ※ 3 Number of compressions * 1 Number of compressions * 1 50 times 100 times 300 times 500 times 50 times 100 times 300 times 500 times Example 1 10000 Example 2000 Example 2000 Example 3 Example 2000 Example 2000 Example 5000 Comparative Example 1 XXX 〇XXX Comparative Example 2 J Hard to execute sheet processing J Hard to perform sheet processing Comparative Example 3 〇〇〇〇XXX

16 592928 〇: There is no change on the surface of the felt without any problems, and it is in a usable state. X: A state where exudative components appeared on the matte surface in a spot-like manner 糸 3. Void-maintained state 〇: Compared with the new product, it still bears the shape of an internal void. X: Compared with the new product, the gap collapse state appears.糸 4 · The diameter of the air bubbles constituting the voids is compressed during the compression process, and the foamed state is obtained by measuring the thickness. Although the embodiment adopts a structure in which the cushioning material is bonded on both sides of the elastomer, it is not absolutely necessary, and the cushioning material may be attached to only one side of the elastomer. In addition, contrary to the embodiment, the cushioning material may be sandwiched by an elastomer. Furthermore, for those who strongly demand dimensional stability, the elastomeric knee layer may be made of a woven or non-woven fabric having heat resistance. [Effects of the invention] According to Tables 1 and 2, it is known that in the present invention, an additive such as Lagiollard that adsorbs exudation components is added to an elastomer such as ethylene acrylic rubber, and the amount of the additive is increased. When it is set to 5 ~ 50%, it can effectively prevent the appearance of seepage under two temperature and high pressure. If the amount of the right additive is less than 5%, the elastomer will not be able to absorb and exudate into a knife V and cause early bleeding phenomenon. On the other hand, if the amount of the additive exceeds 500/0, it will be difficult to form a rubber sheet. Furthermore, the above-mentioned additives not only adsorb exudation components, but also exert a structural reinforcing effect in the elastomer, so that the moderately dispersed 17 592928 scattered voids in the elastomer can be maintained without losing shape. This phenomenon will manifest itself with or without additives in the fluorinated acrylic rubber. That is, in the fluorinated acrylic rubber, since no anti-aging agent is added, the phenomenon of bleeding does not depend on the presence or absence of additives, and there will be a considerable difference in the state of maintaining the voids. [Schematic description]

Fig. 1 is a cross-sectional view of one embodiment of a heat-resistant cushioning material for compression molding of the present invention (without a base fabric in the elastomer). Fig. 2 is a cross-sectional view of another embodiment of a heat-resistant cushioning material for compression molding according to the present invention (a base fabric is added to an elastomer). Figures 3 (a) and 3 (b) are cross-sectional views of another embodiment of the heat-resistant cushioning material for compression molding of the present invention; (a): the elastomer t has no base cloth, and heat-resistant sheets are attached to both sides of the felt Material, (b): An elastomer is made of a base fabric, and a heat-resistant sheet is attached to one side of the felt.

Figures 4 (a) and 4 (b) are cross-sectional views of another embodiment of the heat-resistant cushioning material for compression molding of the present invention; (a): a base cloth is provided in the elastic body, and a heat-resistant sheet is attached to both sides of the felt; (B): Elastomer_has a base cloth, and a heat-resistant sheet is attached to one side of the felt. Figures 5 (a), 5 (b), and 5 (c) are cross-sectional views showing the structure of the elastomer, felt, heat-resistant adhesive sheet, and heat-resistant sheet of the heat-resistant cushioning material 18 592928 for compression molding of the present invention before being adhered. Fig. 6 is a cross-sectional view of a conventional object having no voids in the elastomer. [Simple description of element representative symbols] 1 The present invention 2

Rubber containing a porous material with moderately dispersed voids 3 Heat-resistant adhesive sheet 4 Felt cushioning material heat-resistant base fabric 5 Felt cushioning material heat-resistant mat fiber layer 6 Felt cushioning material 7 Modes of maintaining the voids appropriately, Resin-processed resin containing wetting resin in heat-resistant woven and non-woven fabrics 8 Heat-resistant woven, heat-resistant paper, and heat-resistant film

9 Rubber without voids 19

Claims (1)

592928 捌, the elastomer in the scope of patent application, which contains the addition of components that can ooze out of the elastomer1 · An elastomer containing an elastic material that absorbs the agent with heating and / or pressure 0 2 · such as The scope of patent application is the first. The elastomer of item 1, wherein the elastic material has a heat-resistant glass transition point below room temperature. 3. For the elastomer of item 1 or 2 of the scope of patent application, wherein the glass of the elastic material is 4. The elastic body of item, wherein the elastic material is rubber. ^ The elastomer according to item (2) of the patent application, wherein the elastic material has a porosity having a plurality of voids dispersed therein. 6. The elastomer as claimed in item i of the patent scope, wherein the additive is a group consisting of diatomaceous earth, silica I calcium and activated carbon, and at least one or two or more porous materials are selected. 7. The elastomer according to item 1 of the patent application range, wherein the amount of the additive is in the range of 5 wt% to 50 wt% of the weight of the elastomer. 〇 2592928 8. The elastic body according to item 1 of the scope of patent application, wherein the elastic material expands in the thickness direction and maintains voids as the temperature in the molding step rises. , Is a more heat-resistant woven fabric It contains the core material for the patent application. 9. For example, the elastic 彳 and / or non-woven fabric of item 1 of the patent application scope. 1 0. — A heat-resistant cushioning material for compression molding, an elastomer surrounding any of items 1 to 9 twenty one