JPH0414247B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a hollow mat sealing material for sealing the periphery of a hollow mat used for floor heating, floor cooling, etc.

[Background technology]

Recently, it has been proposed to use a flexible double-structured hollow mat 1 as shown in FIG. 3 for use in floor heating or floor cooling by passing hot or cold water thereinto.

This hollow mat 1 consists of an upper material 10 and a lower material 1 made of a plastic sheet 8 with a woven fabric 9 pasted on its inner surface.
It has a flexible structure with cushioning properties in which a wavy plastic vertical monofilament 11 and a horizontal monofilament 12 are interposed between 0'.

Since such a hollow mat 1 circulates a heat medium such as water inside, it is necessary to seal the periphery with a sealing material.

For example, as shown in Figure 4A, the seal may include:
Hollow mat 1 using soft polyvinyl chloride sheet
A sealing material 13 made of the same material and having a rectangular cross section is attached to the edges of the sealing material 13, and the sealing material 13 is compressed from the upper and lower surfaces using a hot press 7 to form the shape. By this, Figure 4B
As shown in FIG. 1, the edges of the hollow mat 1 are sealed, but there is a problem that cracks 14 and 15 occur in the sealing material 13 due to excessive stress during preforming.

Furthermore, when press molding is performed in the same manner using a sealing material 16 having a circular cross section as shown in FIG. 5A,
As shown in FIG. 1B, defective adhesion portions 17 occur and the hollow mat 1 easily peels off when internal pressure is applied to the hollow mat 1, resulting in a problem that the pressure resistance of the hollow mat 1 is low.

[Purpose of the invention]

An object of the present invention is to provide a hollow mat sealing material that does not cause cracks or poor adhesion when the sealing material is attached around a hollow mat and press-molded.

[Disclosure of the invention]

The hollow pine sealing material of the present invention includes a groove provided on the front surface into which the edge of the hollow pine is fitted, and a notch extending from the bottom of the groove into the thick part at the rear, leaving a step for positioning the hollow pine. It is equipped with the following.

Therefore, it is possible to prevent excessive stress from being applied to the sealing material during pressing, and it is possible to prevent the occurrence of cracks and poor adhesion.

An embodiment of the present invention will be described based on FIGS. 1 and 2. Note that the same constituent members as shown in FIGS. 4 and 5 are designated by the same reference numerals, and the explanation thereof will be omitted. That is, as shown in FIGS. 1A and 1B, the sealing material of this embodiment has a groove 2 on the front surface into which the edge of the hollow mat 1 is fitted, and a thick portion 3 behind the bottom surface of the groove 2. A V-shaped notch 4 is extended inside. Notch part 4
is extended rearward leaving a step 5 for positioning the hollow mat on the bottom surface of the groove 2. This stepped portion 5 serves as a stopper for positioning the edge of the hollow mat 1.

For this reason, by fitting the edge of the hollow mat 1 into the groove 2 and molding it from the upper and lower surfaces of the sealing material 6 using the hot press 7, an unreasonable force is not applied to the sealing material 6, as shown in FIG. 1B. The edges of the hollow mat 1 can be sealed in this manner. Seal material 6
The details of the cross-sectional shape will be explained based on FIGS. 2A and 2B. If the thickness of the hollow mat 1 to be installed is a (Figure A), and the thickness of the same mat in the compressed state when pressed with a surface pressure of 1.0 kg/cm ² is h (Figure B) For example, when a is about 5 mm, the preferred dimensions of each part of the sealing material 6 are determined as follows.

b=a±1mm c=a×approx. (2~3) times d=1.0±0.5mm e=ah/2+0 -1mm f=a/2±0.5mm g=a±1mm However, if a is more than 5mm This does not apply to extremely large cases.

By sealing the hollow pine 1 with the sealing material 6 having such dimensions, as shown in FIG. 1B,
Since the thickness is almost the same as that of the hollow mat 1, it is possible to eliminate the occurrence of cracks and poor adhesion. Note that both side portions of the groove portion 2 are configured to become gradually thinner toward the tip.

〔Effect of the invention〕

According to this invention, when a sealing material is attached to a hollow mat and sealing is performed by press molding, it is possible to prevent cracks and poor adhesion from occurring in the molded sealing material.

[Brief explanation of drawings]

FIG. 1A is an explanatory diagram of an embodiment of the present invention before molding, FIG. 1B is a sectional view after molding, and FIG. 2A
is an explanatory diagram showing the dimensions of each part of the sealing material, Fig. 2B is a sectional view of the hollow sheet after compression, Fig. 3 is a perspective view of the hollow sheet, and Fig. 4A is a diagram of the hollow sheet before molding using a conventional sealing material. 4B is a sectional view after molding, FIG. 5A is an explanatory view before molding using a conventional sealing material, and FIG. 5B is a sectional view after molding. 1...Hollow mat, 6...Sealing material.

Claims (1)

[Claims] 1 Hollow pine sealing material equipped with a groove provided on the front surface into which the edge of the hollow pine fits, and a notch extending from the bottom of the groove into the thick part at the rear, leaving a step for positioning the hollow pine. .