JPH0346786A - Heater cloth - Google Patents

Abstract

PURPOSE:To obtain a soft feeling, an excellent draping property, and a solid contact, by spreading a moisture-hardening type hot melt adhesive in a dotted form or in a dashed line form. CONSTITUTION:By using a moisture-hardening type hot melt adhesive 4 having an open time 15 sec to 2 min, two cloths 1 and 2 am attached, and at the same time, by spreading the adhesive 4 in a dotted form or in a dashed line form, heater installing grooves are composed. In this case, the spreading amount in the dotted form is made less than 0.005-0.1g/dot, and the intervals of spreadings is made less than 80 mm. The spreading amount per unit length in the dashed line form spreading is made 0.5-3.5g/m. Furthermore, at the starting position and the finishing position of the adhesive spreading, a dotted form spreading is provided placing dividing intervals, or a dotted form spreading is provided through constrictions.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a heating element cloth for cloth electric heating appliances such as electric blankets, electric lap blankets, and electric carpets.

2. Description of the Related Art Conventionally, this type of cloth electric heater, for example, in the case of electric blankets, involves weaving two cloths and simultaneously folding a binding thread between the two cloths at a predetermined interval to integrate the two cloths. There is a device in which a mounting groove for inserting a heater into the deafening groove is formed between two pieces of cloth, and the heater is installed in the deafening groove after being treated with napping.

In addition, there is a method in which a heater is temporarily placed between two pieces of cloth in a predetermined pattern, and then the entire surfaces of the two pieces of cloth are bonded together with a water-soluble adhesive or a hot melt adhesive.

Problems to be Solved by the Invention However, with such a structure, for example, a double-fiber blanket with binding yarns, due to the structure of the loom, it is limited to plain-woven and wI-woven fabrics.

In addition, with the method of gluing two blankets together on the entire surface, the two blankets are stretched against each other after gluing, making them stiff and lacking in drape.Furthermore, since the heater is also fixed to the fabric, the external force applied to the fabric is transferred to the heater. The heater is easily disconnected because it is transmitted to
There are other problems.

Therefore, the first object of the present invention is to create a cloth electric heater without impairing the drapability and appearance even when using boa fabric, Meyer fiber cloth, etc., which have cilia that are gentle on the skin and have an excellent appearance. The second purpose is to solve the problem that when fabrics are bonded with moisture-curing hot melt adhesives, the edges of the adhesives stick out to the surface of the fabric after curing, giving a protruding feel and significantly reducing the feel of the fabric. This provides a simple solution.

The third purpose is to solve the problem that when bonding stretchable fabrics such as Meyer blankets, the external force used to spread the Meyer blankets causes the blankets to stretch and deform easily, causing wrinkles during the bonding process. However, this can be easily prevented.

Furthermore, when an external force is applied to the Meyer blanket after lamination,
Because the fabric stretches easily, the external force concentrates only on the moisture-curing hot melt adhesive (hereinafter referred to as the adhesive), which causes the adhesive to break due to lack of strength, and then wrinkles occur at the broken point. be. The fourth objective is to provide a flexible and durable blanket that expands and contracts as a whole without stress being concentrated on the adhesive when an external force is applied to the blanket.

Means for Solving the Problems In order to achieve the first, third, and fourth objects described above, the present invention provides bonding of two pieces of cloth using an adhesive having an oven time of about 15 seconds to 2 minutes. At the same time, the heater mounting groove is formed by applying it in a dotted or broken line pattern.

In addition, for the second purpose of preventing the protruding feeling and improving the texture, the present invention provides dot-like application parts at a dividing interval at the starting point and end point of adhesive application, or a constricted part. The structure is such that dotted application portions are provided through the wafer. The texture can be significantly improved by a simple method that requires almost no changes in equipment.

Effect: With the above configuration, when the fabric is folded, the edges of the adhesive will not break through the fabric and come out to the surface, making it possible to obtain a blanket that is comfortable to the touch. This is because since the adhesive is divided, no stress is transmitted at the divided portion, and this acts to prevent external force from being transmitted to the ends of each segment. Moreover, this makes it possible to provide a flexible blanket with good bendability. Furthermore, if the fabric is made of a material with high elasticity such as Meyer knitted blanket, elasticity can be ensured at the part where the adhesive is separated, so wrinkles can be prevented during the lamination process, and stress will not be applied to the adhesive even after lamination. This is what a durable blanket can provide without concentrating.

Embodiment A first embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, 1 is an upper Meyer blanket, 2 is a lower Meyer blanket, 3 is a heater wire, and 4 is a moisture-curing hot melt adhesive applied in dots.

FIGS. 3 and 4 are explanatory diagrams of a second embodiment of the present invention, in which single-sided brushed plain-woven blankets 5 are stacked with the raised side facing outward, and the moisture-curable hot melt adhesive 4 is applied linearly. A mounting groove for the heater wire 3 is formed by providing dot-shaped coating portions at the starting and ending points of the wire.

In both the first and second embodiments, the moisture-curing hot melt adhesive was 5IJPERGRIP manufactured by Bostik.
2000 (trade name) at 110°C.

In addition, the coating amount of the dotted coating part is 0.02 to 0.03 g/
Dots and linear parts! ~2g/m coating amount, dot coating interval 2
0 Tsuru, the dividing interval of the linear application starting point and end point is 10 Tsuru,
Light pressure bonding was performed at room temperature with an oven time of 20 to 30 seconds.

In the first example, since the adhesive is applied in dots, the blanket is easy to bend and is very flexible, and since the Mayer blanket used for the cloth can freely expand and contract in the non-applied areas, the adhesive There is no wrinkles during the process, and even when the blanket expands and contracts due to external force after assembly, stress is not concentrated on the adhesive, making it durable.

Also, the distance between the heater wire at the heater wire turn part where the meandering wiring was made and the adhesive applied to the inside of the turn! (in Figure 2) is installed for approximately 20 to 40 meters, so even if the Meyer blanket stretches at the adhesive separation point, no force is applied to the heater wire.
The blanket had a good feeling of use, with no tension from the heater wire when the blanket was stretched.

In the second embodiment, the adhesive is applied in a linear manner, and dotted cloth parts are provided at intervals at the starting point and the end point, so that the end of the linear applied part comes into contact with the dotted applied part. The applied end does not protrude from the surface of the blanket fabric, and there is no protruding feeling at all.Furthermore, the adhesive strength is greater than that of the first example because the middle part is applied linearly.

FIG. 5 is a diagram showing the application pattern of the adhesive 4, in which (a) was used in the first embodiment, and (C) was used in the second embodiment. .

In addition, various coating patterns shown in the figure were examined, and good results were obtained for all patterns other than (g) and (h).

The pattern in (a) is dot-like coating, and the amount of coating per point is 0.
．． Sufficient adhesive strength can be obtained at 0.05 g/point or more, but if it exceeds 0.1 g/point, the fish shape becomes large and flexibility is lacking. When the distance between the coating points exceeded 80 m, the heater wire entered between the points during use, resulting in a kink condition, whereas when the distance was 801 mm or less, a sufficient heater holding effect was obtained and it was safe.

The pattern (b) is a dashed line coating, and sufficient adhesive strength and texture can be obtained with a coating amount per unit length in the range of 0.5 to 3.5 g/m, and when it exceeds 3.5 g/m, a foreign body sensation is felt. comes out. In particular, when using stretchable cloth, if the coating length of one piece is 50 or more in the above coating amount range, it will lack flexibility and the coating rate (total length of actual coating/total length including non-coated areas) When the coating length) exceeded 80%, stress concentration of the adhesive during expansion and contraction of the blanket became noticeable and it became easy to tear.

The pattern (C) is a case where the middle part is linearly coated and the starting point and end point are dotted coated, but sufficient adhesion is achieved with a coated amount per unit length in the range of 0.5 to 3.5 g/m. Strength and texture were obtained, and when the separation interval (inner dimension between the linear application part and the dot-like application part on its extension) was 101 or less, the protrusion feeling at the application end could be prevented.

The pattern (d) is the pattern (C) when the separation interval Ofl is (minimum bead coating diameter of fin part φ1.0 m
In the following cases, the same effect as in (C) was obtained.

(e) is a case where there are a plurality of dot-shaped coatings, and (f) is a case where there are a plurality of dot-like coatings and their arrangement is different, but in both cases, the same effect as the present invention is achieved.

When gluing fabrics with high elasticity, the patterns shown in (a) and (b) are good because they have many parts, and plain weave,
For non-stretchable fabrics such as woven fabrics and quilted fabrics, (c) and (d) are recommended in terms of adhesive strength, ease of application, and equipment durability.
, (e) and (f) were found to be good.

Regarding (g) and (h), although the adhesive end did not come out on the fabric surface, it was found that the fabric had a foreign body feel and lacked flexibility.

Effects of the Invention As described above, the heating element cloth of the present invention has the following features: +11 Moisture-curable hot melt adhesive is applied in dots or broken lines to form the heater installation groove, so it feels good to the touch and has excellent drapability. ing.

(2) Moisture-curing hot melt adhesive is applied in a linear manner, with dotted application areas provided at the starting and ending points, allowing for stronger adhesion and durability without sacrificing the good texture.

(3) Since the heater installation groove was formed by applying moisture-curing hot melt adhesive in dotted or broken lines, the outer fabric can be made of boa fabric, chassis fabric, in addition to Meyer knitted blanket.
Even when using fabrics that stretch easily, such as French pile, there is no wrinkles, and the fabric is durable even when it stretches.

(4) Since the heater wire turn part with the meandering wiring and the moisture-curing hot melt adhesive applied to the inside of the turn are separated by a predetermined distance in the direction of the installation groove, the heater wire may be stretched as the fabric expands and contracts. A good feeling of use can be obtained.

Effects such as this can be obtained.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway top view of an electric blanket showing one embodiment of the present invention, Fig. 2 is an enlarged view of the same part, and Fig. 3 is a part of an electric blanket showing another embodiment of the present invention. A cutaway top view, FIG. 4 is an enlarged view of the same portion, and FIG. 5 is a coating pattern diagram. l... Upper Meyer blanket, 2... Lower Meyer blanket, 3... Heater wire, 4...
・Moisture-curing hot melt adhesive, 5... Single-sided brushed plain weave blanket.

Claims (9)

[Claims] (1) Two cloths, a moisture curing hot melt adhesive for bonding the two cloths to form a mounting groove for the heater, and a heater installed in the mounting groove, A heating cloth made by applying hardening hot melt adhesive in dots or broken lines. (2) comprising two cloths, a moisture-curing hot melt adhesive for bonding the two cloths together to form a heater installation groove, and a heater installed in the installation groove; Coating amount of hardening hot melt adhesive per point: 0.005-0.1g
/ point, heating element cloth coated in dots with a coating interval of 80 mm or less. (3) comprising two cloths, a moisture curing hot melt adhesive for bonding the two cloths together to form a mounting groove for the heater, and a heater installed in the mounting groove; Coating amount of hardening hot melt adhesive per unit length: 0.5 to 3.5 g
/m is a heating element cloth coated in a broken line. (4) The heating element cloth according to any one of claims (1) to (3), wherein at least one cloth is a stretchable cloth. (5) According to claim (4), the heater wire of the meandering heater wire turn portion and the moisture-curing hot melt adhesive applied to the inner side of the turn are separated by a predetermined distance in the mounting groove direction. heating element cloth. (6) two pieces of cloth, at least one of which has elasticity;
A moisture-curing hot-melt adhesive for bonding two sheets of the cloth to form a mounting groove for a heater, and a heater mounted in the mounting groove; Coating amount per unit: 0.5-3.5g/m, coating length: 50mm
The following is a heating element cloth coated in a broken line shape at a coating rate of 80% or less. (7) comprising two cloths, a moisture-curing hot melt adhesive for bonding the two cloths to form a mounting groove for the heater, and a heater installed in the mounting groove; A heating element cloth made by applying a curable hot melt adhesive in a linear manner and providing dotted application areas at the application start and end points. (8) Two cloths, a moisture-curing hot melt adhesive for bonding the two cloths together to form a mounting groove for the heater, and a heater installed in the mounting groove; Coating amount of hardening hot melt adhesive per unit length: 0.5 to 3.5 g
/m in advance, and apply 10% at the starting and ending points.
A heating element cloth having dotted application parts separated by a dividing interval of mm or less. (9) Two cloths, a moisture-curing hot melt adhesive for bonding the two cloths together to form a heater installation groove, and a heater installed in the installation groove, Coating amount of hardening hot melt adhesive per unit length: 0.5 to 3.5 g
/m in a linear manner, and dotted application areas are provided at the application start and end points via constrictions with a minimum bead application diameter of 1.0 mm or less.