JPS58118373A - Rubber seal material - Google Patents

Abstract

PURPOSE:To prevent exfoliation and breakage between a vulcanized rubber and an unvalcanized rubber, by integrally jointing and connecting a soft plastically deformable part formed of unvalcanized rubber to a hard core part formed of valcanized rubber through an intermediate connecting part formed of partially vulcanized rubber. CONSTITUTION:By abutting a soft plastically deformable part 2 of unvalcanized rubber C against a severely uneven seal area, a rubber seal material (a1) easily deforms and follows the shape of the seal area so that it is closely contacted to the seal area for surely maintaining its seal effect, and as well the soft plastically deformable part 2 may be closely contacted to the seal area without any compressing force more than that required, thereby an intermediate connecting part 3 may be used for a long time without the fear of exfoliation and breakage. Further, since the soft plastically deformable part 2 is progressed under natural vulcanization due to chronological variation and is therefore cured completely, after it deforms and completely follows the uneveness of the seal surface contacting closely thereto, the close contact thereof is enhanced and the durability thereof may be enhanced.

Description

[Detailed description of the invention] The present invention relates to a novel rubber sealing material.

- In addition, this type of rubber sealing material is used for sealing various containers such as alcohol and juice, and for car door seals.
It is used for building seals, road joints, etc., and its uses are extremely wide. Conventionally known rubber sealing materials are generally those made by integrally molding hard rubber and soft rubber, those made by integrally molding solid rubber with a highly viscous sealant material, or those made by laminating sponge to rubber. Since the object is a regular object, it is easy to follow the shape of the uneven surface and it is difficult to maintain complete airtightness.

To solve this problem, sealing materials are known that are made by integrally molding a rubber comb and an unvulcanized rubber, but in such a structure, when compressed under pressure to complete the seal, one of the rubber layers of both peels off. The disadvantage of sintered rubber is that the unvulcanized rubber escapes, resulting in a complete seal.

This invention is a layered version of the points mentioned above.
For the cured rubber obtained by blending the quenching agent and the accelerator with other additives, vulcanization (JI-Shinho ``vulcanization without full distribution'' and other vulcanization) The vulcanized rubber obtained by blending the additive with τ is bonded, or the vulcanized rubber obtained by varying the amount of accelerated cutting is fully bonded with the unvulcanized rubber to perform the vulcanization action. At the same time, the vulcanized rubber side 11a oki 1zen-fS was transferred to the part of the vulcanized rubber that meets the 1 Full formation of the added rubber layer As a shim rod, at least three layers of vulcanized rubber, 1,000-value rubber, unvulcanized rubber, and 1+3j rubber hJ are completely formed. It is possible to avoid inconveniences such as peeling and damage by strongly rubbing against contact with sulfur rubber.
The purpose of this invention is to obtain a rubber sealing material with an attractive appearance.

However, the rubber material used in this invention is not limited to natural rubber or rubber.
DM, Nru, SBru, 11ru, NBIL.

It is possible to use four types of rubber such as Cktyz or different types of rubber as necessary, and it is also possible to use special rubber such as sponge.

Further, vulcanization of the vulcanized rubber and unvulcanized rubber of the present invention,
) It goes without saying that k is not limited to sulfur, and can be selected as appropriate, such as the amount of the vulcanization accelerator, the presence or absence of other additives, and the amount of the vulcanization accelerator.

The following is a second implementation 1/11 showing the basic configuration of this invention.
will be explained with reference to the drawings.

The embodiment shown in FIG. 1 will now be described.

1 is a tJIk member formed of vulcanized rubber a, 6 parts, 2 is a soft plastic deformation part formed of unvulcanized rubber b, 3#'i is a semi-vulcanized rubber 2 in the middle of both parts 1.2 C indicates the shape bv, which indicates the intermediate joint. The Ait loquat part 1 and the soft plastic deformation part 2 each have a wall thickness of 1.5 mm depending on the shape of the seal 161. ．． 11. The fully equipped intermediate connecting part 3 is connected to both parts 1,
The rubber seal material a1 is formed as a whole with a width g3 that can firmly connect and connect the two parts. 2. The shape of the rubber sealing material a1 can be any desired shape, including not only the planar shape shown in the figure, but also circular, annular, hooked, U-shaped, Fl-shaped, and L-shaped.

The embodiment shown in FIG. 2 will now be described.

This example has five layers of KT in addition to the three layers of the previous example, and 6M! made of vulcanized rubber A in the center! Negative and negative parts 3 are disposed, and an uncured comb b is applied to both parts 1i111 through an intermediate speed #ji part 3.3 made of semi-vulcanized rubber C.
.

The soft plastic deformation portion 2.2 is integrated into a rubber sealing material a.
2 is formed. In this rubber seal Ha2, similarly to the above embodiment, the hard core part 1 and rolling vJ deformable part 2 each have a wall thickness of 'I+I' depending on the shape of the sealing part.
t + 1! ``2'', and the intermediate connecting portion 3 also has a median line 1 ``I + IB'' so that it can exhibit a strong connecting effect.

Further, the shape of the rubber sealing material a2 is not limited to that shown in the drawings, and can be similarly selected to any desired shape in the above embodiments.

The rubber sealing material "1ea2" shown in the above-mentioned embodiment can easily deform to follow the shape of the sealing area by bringing the soft plastic deformation part 2 of the unvulcanized rubber C into contact with the sealing area which has severe irregularities. Since the soft plastic deformation part 2 can be brought into close contact with the sealing part without requiring an unnecessarily strong compressive force, there is no risk of the intermediate connection part 3ti being peeled off or damaged. It can withstand long-term use.

In addition, after this soft plastic deformation part 2 completely deforms and comes into close contact with the sealing surface such as unevenness, the natural vulcanization effect progresses over time and it becomes completely solidified, so it is possible to improve the adhesion. This means that it has the advantage of being much more durable.

Furthermore, the strength of the hard core part 1#'i based on the vulcanized rubber a and the flexible soft plastically deformed part 2 is improved)j! Since it has a hardness of 11 mm, it is convenient for composting, and since there is no need to form a tube that is thicker than necessary, it can be provided at a low price without wasting material.

Next, an example of a method for producing a rubber seal material based on the present invention will be shown, and various examples of different rubber compositions and quality and strength test results of each rubber seal material will be described.

That is, a commonly used 211T extrusion mold is used to extrude vulcanized rubber fabric and unvulcanized rubber fabric, and heat treatment is used to integrally mold vulcanized rubber, semi-vulcanized rubber, and unvulcanized rubber. The manufacturing method is Ruru.

First, for diene-based rubbers, - force is unvulcanized rubber, and the other is vulcanized rubber with 0.2 to 5 parts of sulfur added or 0.2 to 3 parts of vulcanization accelerator added. The two types of dough are integrally molded using a crosshead unit consisting of two extruders. This integral molded product was heat-treated, and the vulcanization accelerator was transferred from the vulcanized rubber dough to the unvulcanized rubber side of the contact area of the 2 Yuzu dough, and the vulcanization reaction had halfway progressed. Semi-vulcanized rubber 1- Allow complete formation. In addition, due to this heat treatment, the fabric of Cured Rubber Month 1 undergoes a vulcanization reaction and becomes vulcanized rubber, and in the areas of fabric for unvulcanized rubber where the vulcanization accelerator does not transfer, the vulcanization reaction is slow. It is in the state of unvulcanized rubber.

By the method described below, it is possible to produce a sealing material having at least three layers of vulcanized rubber a, semi-vulcanized rubber CP, and unvulcanized rubber b.

Next, the formulation for vulcanized rubber and the formulation for unvulcanized rubber are #f above.
J1 Table G).

The formulation for vulcanized rubber is l! ! : PDM with reinforcing agent, filler,
The softener, vulcanization aid, etc. are mixed and dispersed using an internal mixer for 4 minutes, and then taken out and uniformly dispersed using a cooled oven roll. The rubber patch thus obtained is mixed and dispersed with an anti-bubble agent, a vulcanizing agent, a vulcanization accelerator, etc. using an open roll for about 12 minutes to obtain a dough for vulcanized rubber. Compound t for unvulcanized rubber, 14 t' l) ~ Reinforcement MI
J, filler, softener, vulcanization aid, anti-bubble agent, 'JJ
Mix and disperse all of the D sister agent for 4 minutes using an internal mixer, deposit it, and uniformly disperse it using a chilled oven roll. This is used as a dough for unvulcanized rubber. The two types of dough obtained through V-filtering are extruded from two extruders using a multi-layer production method, and extrusion molding of 2J- is carried out through a 2H structure nozzle TI (Sk) attached to the crosshead. This molded product was transferred into a furnace at l u~210°C and subjected to heat treatment, and the resulting molded product σ) had physical properties as shown in Table 1 (b) below.

Tables 2 to 7 show the specific ml of vulcanized and unvulcanized rubber with different compositions and proportions, and the results of bonding tests, respectively.・Table 1 (a) 1st Table C4 2nd table (a) 2nd table (b) 3rd table (a) 4th table 5th table (a) 5th table ol 6th clothing (a) 6th & (b) Table 7 (a) It can be seen that the rubber seal 1 made of crushed vulcanized rubber, unvulcanized rubber, and semi-vulcanized rubber, all of which are extremely easy to pay, is obtained by this invention. For example, the structure is sharp and rectangular, the sealing performance is high, and the application is not limited and can be applied to any sealing area, and its effects are extremely remarkable.

[Brief explanation of the drawing]

FIGS. 1 and 2 are partially enlarged cross-sectional views of a second embodiment IVII showing the basic structure of the rubber sealing material according to the present invention. 1. Hard core part J-shaped made of vulcanized rubber a. 2. Soft core part q made of vulcanized rubber b.
J deformed part 3......Intermediate connecting part formed of semi-vulcanized rubber C alv82...Rubber sealing material procedural amendment document March 111, 1980" Japan Patent Office Commissioner Shima 1) Haru Kara-dono I 1 Cow Display 1981 Patent Application No. 987
Name of investigation No. 2: J Mushir kidnapping 3 Oil stop 1 = person 1'l: l) Relation Applicant Benmasu Churotei → 4j: + Koshi @ Rubber processing company Kote ≠ = person 4th generation Rito +6606・Mr. rl Benri Dotan Han Hiroshi 5
Draw] 1.111 Valley, Su
++ Stop O Patent Claims r A soft plastic deformable part made of unvulcanized rubber is integrally connected to a solid core part made of elastic rubber via an intermediate connection part made of semi-vulcanized rubber. A rubber sealing material characterized by having three or more layers of interlocking rubber mt. ”

Claims (1)

[Claims] A hard part made of unvulcanized rubber, 64, is connected through an intermediate connecting part made of semi-vulcanized rubber.
< A rubber sealing material characterized by having three or more different rubber layers formed by integrally connecting all the deformed parts of the soft plastic.