JPH07125761A - Packing - Google Patents

Abstract

PURPOSE:To dispence with a double or triple packing by use of a polyethylene bag or the like and obtain sufficient air-tightness in order to increase stable preservability of a single component humid-setting type adhesive or a composite sealing material, by using a packing chiefly composed of butyl rubber. CONSTITUTION:This packing is made of a packing material chiefly composed of butyl rubber. Partly bridged butyl rubber, of which ratio is less than 80% and preferably 20-70%, is processed to make a packing material. The lower end edge of the upper cover 16 is caulked in the state that the packing 20 is positioned to contact the upper edge of a storage tank body 14 to completely close the opening of the storage tank 14. By use of the packing 20 made of butyl rubber, the storage tank is completely kept air-tight and a single component humid-setting type adhesive or a sealing material 18 contained in the storage tank 12 is completely kept from humid and hence, the stable preservability is increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing containing butyl rubber as a main component, and particularly, by improving the airtightness of a storage container, the storage stability of a one-component moisture-curing type adhesive or a sealing material composition is improved. Regarding packing that can be increased.

[0002]

2. Description of the Related Art Heretofore, in moisture-curing type adhesives or sealing material compositions, it has been pointed out that the airtightness of a storage container is increased due to the problem of storage stability.
Therefore, when filling a container (180 liter drum can, 20 liter pail can, etc.) with an adhesive or a sealing material, in consideration of the above points, packing has been used to enhance airtightness. There is. As this type of packing material, vinyl chloride foam, natural rubber foam, polyethylene foam and the like are used. However, as a matter of fact, since the current packing alone does not provide sufficient airtightness, double- or triple-layer packing, such as packing polyethylene or polyethylene terephthalate (PET) in a bag, is necessary. The actual situation is that the packaging is done.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. In order to increase the storage stability of a one-pack moisture-curing type adhesive or a sealing material composition, The purpose of the present invention is to provide a packing and a storage container equipped with the packing that does not require double or triple packing using a bag such as polyethylene or PET, and that has sufficient airtightness. And

[0004]

In order to solve the above problems, the packing of the present invention contains butyl rubber as a main component.

The above-mentioned butyl rubber is a partially cross-linked butyl rubber, the cross-linking rate of which is 85% or less, preferably 20 to 7
The one that is made 0% and processed into a packing is used.

If the cross-linking ratio exceeds 85%, the rubber itself becomes hard and the moldability deteriorates, so that it becomes difficult to process the packing. If the cross-linking rate is less than 20%, the rubber itself becomes soft and viscous, so when opening the lid of the container, it becomes difficult to open the lid, or the packing itself breaks,
When trying to cover the container again, problems such as being unusable may occur. However, since it has sufficient airtightness retaining ability, it can be used as a packing for applications that do not require reuse.

It is also possible to use a non-cross-linked butyl rubber and a partially cross-linked butyl rubber that have the same performance.

The butyl rubber used in the present invention includes one or more kinds of natural rubber and synthetic rubber (SR, SBR, NBR, etc.).
It is also possible to blend about 10 to 85%. In this case, the cross-linking ratio of the butyl rubber component is preferably about 0 to 80%.

Further, butyl rubber includes tackifiers (rosin resin, phenol resin, terpene phenol resin, petroleum resin, etc.), fillers (calcium carbonate, talc, clay, etc.), plasticizers (DOP, DB
P, DINP, etc.), and other stabilizers, cross-linking agents, etc. can also be blended.

By using the above packing, a storage container for enhancing the storage stability of a one-component moisture-curing type adhesive or sealing material can be obtained. At the time of packaging, a bag made of polyethylene, PET or the like filled with an adhesive or a sealing material composition is packed in the storage container of the present invention, or a dry gas such as nitrogen or air is filled to prevent skinning. It is also possible to do so.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a storage container using the packing of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 12 denotes a storage container, which is composed of a storage container main body 14 having an opening at the top and an upper lid 16 for closing the opening. The storage container body 14 includes a one-component moisture curing type adhesive or sealing material 18
Is housed.

A packing 20 is fitted in a circumferential groove 22 formed on the inner surface of the peripheral portion of the upper lid 16. The packing 20 is made of butyl rubber. This butyl rubber is preferably partially crosslinked having the above-mentioned properties.

With the packing 20 in contact with the upper edge of the storage container body 14, the lower edge of the upper lid 16 is caulked to completely close the opening of the storage container body 14. . Packing 2 made from this butyl rubber
By using 0, the airtightness of the storage container is completely maintained, the one-component moisture curing type adhesive or sealing material 18 stored in the storage container 12 is completely shielded from moisture, and its storage stability is improved. Sex increases.

Next, the present invention will be further described with reference to an example in which a one-part moisture curing type adhesive or sealing material is actually stored in a storage container using the packing of the present invention and a conventional container.

Example 1 50 parts of Polycerbutyl XL 10000 (about 80% crosslinked product, manufactured by Polycer International SA) and 50 parts of Polycerbutyl 100 (uncrosslinked product, manufactured by Polycer International S.A.) were rolled for 10 minutes. The kneaded material is processed into a sheet and cut into a piece having a thickness of about 5 mm. This was used as a packing and applied to a 20 liter pail can. PM100 [moisture-curing type elastic adhesive manufactured by Cemedine Co., Ltd.] was housed in this pail can.

After storing this container at 50 ° C. and 85% RH for 1 month, the container was opened and the appearance of skinning of the adhesive was confirmed. No skin was observed, and it could be stably stored even after 1 month.

Example 2 100 parts of Polycerbutyl XL 10000 (about 80% crosslinked product, manufactured by Polycer International SA) was kneaded for 10 minutes with a roll and processed into a sheet shape to give a thickness of about 5 mm.
Cut into pieces. This was used as a packing and applied to a 20 liter pail can. In this pail can, PM100
A [moisture-curing type elastic adhesive manufactured by Cemedine Co., Ltd.] was stored.

After storing this container at 50 ° C. and 85% RH for 1 month, the container was opened and the appearance of skinning of the adhesive was confirmed. No skin was observed, and it could be stably stored even after 1 month. However, the packing itself was very hard and difficult to mold, so the lid was difficult to close.

Example 3 100 parts of Polycerbutyl XL100 (uncrosslinked product, manufactured by Polycer International SA) was kneaded with a roll for 10 minutes, and a sheet-shaped product was cut into a thickness of about 5 mm. This was used as a packing and applied to a 20 liter pail can. PM100 [moisture-curing type elastic adhesive manufactured by Cemedine Co., Ltd.] was housed in this pail can.

After storing this container at 50 ° C. and 85% RH for 1 month, the container was opened and the appearance of the adhesive skin was confirmed. No skin was observed, and it could be stably stored even after 1 month. However, since the packing itself is very viscous, it was difficult to open the lid, and the packing itself was also difficult to remove.

Comparative Example 1 A vinyl chloride foam was used as a packing and applied to a 20 liter pail. PM100 [moisture-curing type elastic adhesive manufactured by Cemedine Co., Ltd.] was housed in this pail can.

After storing this container at 50 ° C. and 85% RH for 1 month, the container was opened and the appearance of skinning of the adhesive was confirmed. Staining of about 15 mm occurred from the surface, and stable storage could not be performed.

Comparative Example 2 A natural rubber foam was used as a packing and applied to a 20 liter pail can. PM100 [moisture-curing type elastic adhesive manufactured by Cemedine Co., Ltd.] was housed in this pail can.

After storing this container at 50 ° C. and 85% RH for 1 month, the container was opened and the appearance of the skin of the adhesive was confirmed. A skin of about 6 mm was formed from the surface, and stable storage could not be performed.

[0026]

As described above, according to the present invention, in order to improve the storage stability of the one-component moisture-curing type adhesive or the sealing material composition, a bag such as polyethylene or PET is used. There is no need for double or triple packaging, and sufficient airtightness can be obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view showing an example of a storage container using a packing of the present invention.

[Explanation of symbols]

 12 Storage Container 14 Storage Container Main Body 16 Upper Lid 18 Adhesive or Sealing Material 20 Packing 22 Circumferential Groove

Claims (4)

[Claims] 1. A packing comprising butyl rubber as a main component. 2. The packing according to claim 1, wherein the butyl rubber is a partially crosslinked butyl rubber. 3. The cross-linking ratio of the butyl rubber is 85% or less,
The packing according to claim 2, which is preferably 20 to 70%. 4. The packing according to claim 1 is used,
A storage container for a one-component moisture-curing adhesive or sealing material, which enhances storage stability of a one-component moisture-curing adhesive or sealing material.