JPS5991052A - High-frequency adhesive body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high frequency adhesive. More specifically, it is a high-frequency adhesive that has excellent flexibility, wind resistance, elongation, etc., can be manufactured by a dry method using a powder bonding agent, achieves energy saving and energy saving, and can be manufactured with good reproductive performance by high-frequency adhesive. It is related to the body.

Conventionally, the following structures are known as frequency contact bodies.

Sequentially: Base material layer such as F board, film layer for high frequency adhesive, high frequency adhesive resin latex forming a uniform coating on the polyurethane foam skeleton, high frequency contact material shield, for ρi frequency adhesive. It consists of a film layer, a covering material layer such as fabric, etc.

However, the conventional Kanshu wave concerto has the following drawbacks.

Shinaga had the disadvantage that because the frequency-tuning adhesive resin latex forms a uniform film on the polyurethane skeleton, the original flexibility, texture, and stiffness of polyurethane are formed and are inhibited by the latex film.

In particular, when trying to improve the face circumference and right angle, it is necessary to impregnate polyurethane foam with polypyramidal latex, which results in filling the breast film and reducing flexibility, texture, and elongation. There was a problem with letting it work.

Unfortunately, the process of impregnating latex into polyurethane is a wet method, which has the disadvantage that a large amount of water must be evaporated. In the process of assembling the high-frequency adhesive, it is necessary to insert a film for cylindrical frequency contact in order to obtain a practical adhesion force for part of the commercial wave mW part, and when assembling the high-frequency adhesive, an excess of the film must be inserted. There will be scraps, but this is due to [11]There was a portion that could not be used for historical purposes and had to be thrown away. Furthermore, in the process of assembling the high-frequency adhesive, it was difficult to position all five layers: the base material layer, the film layer, the cushion 1-, the film layer, and the facing material layer.

There was a demand for a high-frequency f6 W body that does not have the mechanical, process, and assembly drawbacks and difficulties of the conventional single-blade I-frequency tongue body.
In response to the above requirements, the present inventors have conducted extensive research and developed a high-frequency adhesive cushioning material in which high-frequency adhesive resin powder is uniformly adhered to a polyurethane foam skeleton in the form of particles. It has now become possible to provide a practical high-frequency bonded body without using a film for commercial frequency bonding unlike high-frequency bonded bodies. Accordingly, the present invention is a high-frequency bonded body comprising a piece base material layer, a crystal frequency contacting application layer, and a facing layer, some of which are bonded by high frequency bonding.

The cushion layer of the high-frequency adhesive of the present invention has a urethane foam skeleton with madder frequency adhesion powder uniformly fixed in the form of particles, so the original flexibility and texture of the urethane foam is maintained.
In addition to the quality advantages of no loss of elongation and practical high-frequency adhesion, it is a dry method that fixes the powder to the skeleton - it is less expensive and less expensive than the wet method of impregnating latex. There are also process advantages.

In addition to the advantage of not using a high-frequency adhesive film compared to the conventional G') high-frequency adhesive, there is also an advantage in the process of eliminating the difficulty in positioning each side layer when assembling the high-frequency adhesive. Advantages Based on 0 The high frequency adhesive body of the present invention is partially commercial frequency bonded with the base material layer 4, the high frequency positive layer 3, the facing side layer 2 and the high frequency negative circulation part 1. It is a struct.

As the base material layer used in the present invention, fiberboard, hardboard, honeycomb board, resin board, plywood, metal board, etc. can be used. Node boards, base plates, and steel plate fronts are inexpensive and preferable.

As the high-frequency adhesive cushioning material, a structure in which high-frequency stone-contactable resin powder is adhered to a polyurethane foam skeleton in the form of particles is used.Also, a natural pulp aggregate,
A high-frequency adhesive cushion made by impregnating a cotton aggregate or a synthetic fiber aggregate with the frequency-adhesive powder of the present invention and fixing it to the fiber skeleton is particularly applicable when the covering is fabric, This is convenient when static electricity is generated due to clothing. Natural fibers such as natural pulp, cotton, and gonotoxic fibers are moderately hygroscopic and absorb the frictional static generated on the surface.
It also has the effect of moving the air little by little toward the cushion paulownia, which is preferable.

A simple method for evaluating static electricity diffusion is, for example, by using polyester or nylon film as a covering material of YtN and dropping cigarette ash on the surface. be.

The structure in which these powders adhere to the porous body skeleton while leaving a particle shape will be described based on scanning electron microscopic observations and warpage photographs.

FIG. 5 is an electron micrograph of a bulk polyurethane foam material of 16 yt. FIG. 6 is an electron micrograph of a high-frequency adhesive cushioning material layer in which vinylidene chloride co-merging powder is adhered to both sides of urethane foam while leaving its particle form intact.

As is clear from FIGS. 5 and 6, it can be seen that the high-frequency adhesion resin powder is discontinuously adhered to the skeleton, leaving a particle shape. This structure in which the particles remain discontinuously fixed has an important meaning in preserving the characteristics such as the original feel of the porous material of the cushioning material layer. That is, the frequency wave contactable friction phase layer of the present invention has a porous structure that is endowed with commercial frequency wave contactability while maintaining the degree of freedom of the porous body skeleton against external forces.

As frequency R&M resin powder, vinylidene chloride resin,
Among vinyl chloride resin and polyamide resin powder, those having a dielectric loss of 0.02B or more can be used.

Preferably 004 or higher, historically (l (preferably 00
5 is good. If the dielectric loss is less than 0.02, the dielectric heat generation at the r frequency is insufficient, and the heating 111 occurs during commercial frequency stone contact.
This is undesirable because the gap becomes long and the stone contact force becomes impractical.

The amount of high-frequency adhesive resin powder that adheres to the urethane foam skeleton varies depending on the bulk density of the urethane foam and the required adhesive force. For example, when using urethane foam with a bulk density of 199/l, the amount of powder adhered to 5 Lj/ or more, 1
809/ or less is better.

Preferably, it is 1'oy/ or more and 15θ9/ or less. More preferably, it is 139/4 or more, and 1009/4 or more F.

If the powder hardness f + f is less than 597', the frequency welding force will be impractical, and if it exceeds 1809/'l, the texture and strength of the urethane foam will deteriorate, which is undesirable.

As the particle size range of the positive resin powder, 05μ
As mentioned above, one bait or less is good for making it stick to the urethane foam. Preferably it is 10μ or more and 500μ or more, more preferably 100μ or more and 300μ or less.

When the above particle size range is expressed using a JIS standard sieve, it is 16 mesh passes, preferably 32 mesh passes, more preferably 42 mesh passes, 2 mesh passes, etc.
It is in the range of 0o mesh.

If the particle size is less than 0.05 μm, the texture and elongation of the fixed R-urethane foam will be deteriorated, and if the particle size exceeds 1.0 μm, adhesion failure (adhesion skipping) will occur at the image frequency bonding area, which is not preferable.

As the vinylidene chloride resin preferable as the high-frequency dextral powder, a vinylidene chloride (A) component of 20 mol % or more and 93 mol % or less and 7 mol % of one or more monomers selected from monomers that can be used with (A) Above, 80 mol% or more of the monomer (B) component and (A) and/or (B)
0 mol% or more selected from the seven functional sensual substances,
Preferably, the powder is a vinylidene chloride copolymer comprising 10 moles of CX or less of monomers to component (C) and/or is polymerized by an emulsion method and the molecular chain terminal thereof is a functional group of a decomposition product of a radical initiator.

In particular, vinyl chloride, vinyl acetate, acrylonitrile, methyl acrylate, and methyl methacrylate are industrially mass-produced as (1B), and may be used in combination.

(C) Special acrylic acid, methanolic acid, itaconic acid, maleic acid, maleic anhydride, fumaric acid, acrylamide, methacrylic acid amide, N-n-butquine acrylamide, hydroxyethyl acrylate, glycidyl acrylate , glycidyl methacrylate is preferably produced industrially and easily available.

If the content of component (A) is less than 20 mol %, the commercial wave dielectric heating value will be small, and the powder will not melt, soften, or crosslink to the extent that practical sieve circumferential adhesion can be obtained, which is undesirable. It is thought that the use of functionalized nitrate (C) works favorably when wetting with the adhesive melts, softens, or crosslinks the powder, but RMal is unknown. The amount of S in Kanjisei Nanatsuma (C,) is 0. (+5 mol% or more, a clear effect of increasing the image frequency adhesion force is observed.Also, when functional seven-termer-CC) is not used, the emulsion type method is used, and if it is made more compact, the decomposition of the radical initiator is generated. It is preferable that a functional group is added at the end of the polymer chain, which is considered to be due to a substance, to increase the high-frequency adhesive strength.

Particularly when structural strength is required, such as in furniture such as chairs, pets, sofas, etc., it is preferable to have a functional copolymer terminal formed from a functional monomer component and/or an initiator.

As the vinyl chloride resin preferable as the high-frequency layering powder, a copolymer mainly composed of vinyl chloride is preferable, and more preferably a copolymer with a functional heptamer introduced therein and/or a radical initiation method using an emulsion type method. A copolymer formed by introducing a functional group of a chemical decomposition product is preferable. - As a vinyl chloride component, 50 mol% or more and 92 mol LX or less, 8 mol% or more and 50 mol% or less of ethylene, propylene, vinyl acetate, A copolymer comprising a combination of one or more monomer components selected from acrylic esters, methacrylic esters, and acrylonitrile is preferred because it can be manufactured industrially. More preferably, as the functional monomer component, acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, acrylamide, methacrylic acid amide, N-u-butquine acrylamide, hydroxyethyl acrylate, Glycidyl acrylate and glycidyl methacrylate are preferably industrially produced and readily available.

As the polyamide resin preferable as the high-frequency adhesive powder, a polyamide resin with a low melting point is preferable.

A polyamide resin having a melting point of preferably 60°C or higher and 200°C or lower, more preferably 70°C or higher and 180°C or lower, most preferably 80°C or higher and 150°C or lower. Polyamide resins, which are generally used for nylon fibers, have a high melting point and are not preferred.

A polyamide resin having a melting point exceeding 200C is not preferable because the high frequency application time becomes long and the bonding work becomes slow when one West Frequency wave is applied. A polyamide resin having a melting point of less than 60° C. is not preferred because the initial strength of the high-frequency bonded portion is low.

As the facing material layer, a facing material selected from fabric, natural leather, and synthetic leather is preferable. Spinning single fibers as fabrics selected from synthetic fibers such as nylon, polyester, acrylic, vinylon, and polypropylene, semi-woven acetate fibers, defined fibers such as rayon and cupro, and natural fibers such as wool, cotton, and hemp. Alternatively, knitted or woven fabrics can be used by using yarns made of a blend of two or more yarns, knitting or weaving these yarns singly, or by father-knitting two or more yarns.

Animal skins such as cowskin, sheepskin, and pigskin can generally be used as natural leather. As synthetic leather, °C polyurethane leather, PVC leather, and polyamide leather can be used.

Methods for impregnating polyurethane foam with sub-frequency tung fat powder include: ■ Powder dredging method: A method in which the urethane foam is passed through the powder to impregnate it ■ Fluid powder impregnation θ: Fluidize the powder with air A method of impregnating the powder by passing it through a foam (■ Air gun method: A method of impregnating powder by spraying a powder mixture in which powder is dispersed in the air. ■ Air suction method: A method of dispersing powder in the air or impregnating it with powder. A method is adopted in which the powder is impregnated by passing the foam through the fluidized material and applying reduced pressure to the other side of the foam.

It goes without saying that a combination of these methods can be employed as needed.

Methods for fixing high-frequency bondable resin powder to the polyurethane foam skeleton are: -Hot air sintering method: A method in which the resin is heated with hot air above its softening point or melting point to fix it. -Infrared sintering method: The resin is fixed using infrared rays. Method of fixing by heating ■Takaoka di-sintering method: A method of fixing resin by heating it with high frequency.

It goes without saying that a combination of these methods can be employed as required.The present invention will be explained in detail below using an example of laxation, but the present invention is not limited to this example.

In addition, the evaluation method in the examples was based on the method described below.

■High-frequency adhesive pearl high-frequency welder = (Pearl FF1 Co., Ltd.) R-
203D (3KW, 40MHz) was used, and a seal bar with a width of 4g and a length of 3g cm was installed on the surface material layer.
Kg/en? Apply pressure and turn the tuning dial 80 ('
200 mA). The sealing time is 15 seconds when synthetic leather is used for the facing layer, and 30 seconds when fabric is used. The cooling time was the same as the -C sealing time in the pressurized state.

■Tensile strength Toyo Baldwin TENSILON tensile testing machine UT
Using M-4L, the right side of the temporary tangent of the quotient circumference was peeled off at an angle of 180 degrees at a tensile speed of 50 tar for 7 minutes, and the peel strength of the node board layer and the facing material layer was measured. The test piece is Il
l 2.5 cm.

Example 1 A polyurethane foam sheet with a bulk density of t 6y7t and a width of 3 rb (Fig. (shows an electron micrograph of urethane foam) is impregnated with a predetermined amount (bulk density 0.5
After impregnating a predetermined amount of powder by impregnating a Taretane foam sheet at a speed of 5 m/min □) into an impregnating bath containing 9/cc of powder, it was heated for 10 seconds in a 40 MHz high-frequency sintering furnace. Then, a high frequency adhesive cushioning material was prepared in which powder was adhered to the urethane foam skeleton as shown in FIG.

As the facing material layer, 0.34 m1!3' of vinyl chloride resin leather was used, and as the thread material, 5-thickness hardboard (manufactured by Nippon Hardboard) was used, and in between, a cylindrical circumferential skin-adhesive cushion side layer was used. At the same time, a part was radio-frequency bonded to create a frequency-tuning bonded body. Table 1 shows the results of measuring the adhesive strength of this partially cylindrical frequency adhesive area.

As shown in Table 1, the cylindrical frequency wave resistance of the adhesive of the present invention was practical and had a good feel.

For comparison, urethane foam was impregnated with an aqueous dispersion of 50X solid content consisting of 70 mol% vinyl chloride, 30 mols vinyl chloride, and 1 mol% acrylic acid, and dried at 160°C for 5 minutes to form a high-frequency adhesive resin component of 389/ A high frequency adhesive cushioning material containing the above was made into a high frequency adhesive body with the same structure as in Example-1.

The high-frequency adhesive strength of this adhesive was comparable to that using powder, but the texture was extremely hard.

Table-1 Example-1 ■DC vinylidene chloride VC vinyl chloride 6 pieces Polymer obtained by salting out powder from acrylic acid emulsion chassis Example-2 Vinylidene chloride component used in Example-1 70 mol%, vinyl chloride component A polyurethane foam sheet having a bulk density of t6p/z and a thickness of 10 sections was impregnated with 389/ copolymer powder (42 mesh pass, 200 mesh pass) consisting of 30 mol% and 1 mol% of acrylic acid component, and then 1601G
Two types of high-frequency adhesive cushioning materials were prepared by heating in a hot-air sintering furnace for 5 minutes to adhere powder to a urethane foam skeleton.

One is one in which the powder is fixed to the skeleton from the surface of the urethane foam sheet to a depth of approximately 2M, and the other is one in which the powder is fixed to the skeleton uniformly in the thickness direction of 10 mb.

Polyester tricot (texture amount s s
, o y /m ), 5 pieces of buried hardboard were superimposed as a base material layer, and a portion was bonded using high frequency to create a high frequency bonded body. Table 2 shows the results of measuring the adhesive strength of this partial high-frequency bonded area. As shown in Table 2, the high frequency adhesive strength of the adhesive of the present invention was practical and the texture was also good.

Table 2 Example 2 *The polyurethane foam portion to which the high-frequency adhesive resin powder was not adhered was destroyed.

Example 3 After impregnating a polyurethane foam sheet with a bulk density of 169/l and a depth of 389/l with 16 mesh passes of high-frequency adhesive resin powder made of vinyl chloride resin shown in Table 3, hot air at 160°C was applied. A high-frequency adhesive cushioning material was prepared by heating in a sintering furnace for 2 minutes to adhere powder to a urethane foam skeleton.

Polyester tricot (basis weight sso
g/m), using a 5-elm thick notebook as the base material layer, and placing a high-frequency adhesive cushioning material between them,
A portion was subjected to i-frequency bonding to create a high-frequency bonded body. The results of measuring the adhesive strength of this partial high-frequency adhesive are shown below.
Shown in 3. As shown in Table 3, the high-frequency adhesive strength of the adhesive body of the present invention was practical and had a good texture.

For comparison, urethane foam was impregnated with vinyl chloride yarn latex of Sumielite 1100 (Sumitomo Kagaku Kaisha), dried at 160°C for 5 minutes, and 389/
A high-frequency adhesive cushioning material containing the same composition as in Example-3 was used as a high-frequency adhesive. The high frequency adhesive strength of this adhesive is 15 to 9/2. s cm, and the texture was extremely hard.0 For comparison, we measured the high-frequency adhesive strength of a material to which vinyl chloride homopolymer was fixed, and found that it was 0.1 K9/2.5 cm.
Therefore, it is difficult to say that it is practical.

Table 3 (Example 3) Sumielite was a commercially available product that was freeze-dried and made into a fine powder, which was then impregnated into polyurethane foam.

Example 4 A high-frequency adhesive resin powder of 42 mesh passes and 170 meshes made of the polyamide resin shown in Table 4 was prepared with a bulk density of 1.
High frequency adhesive property in which a 3 ta polyurethane foam sheet of 69//- was impregnated with 38 g/, and then heated for 2 minutes in a 1 s o 'c high frequency sintering furnace to fix the powder to the urethane foam skeleton. Prepared cushioning material.

Table 4 shows the results of measuring the adhesive strength of the partially high-frequency bonded portion of the high-frequency bonded body having the same configuration as Example-2. As shown in Table 4, the adhesive of the present invention was highly resistant to high frequencies and had a good texture.

As a comparative example, a high-frequency bonded body was created under the same conditions as Example 4 using high-frequency adhesive resin powder of polyamide resin (Tomide≠210) with a melting point of 45°C and nylon 6.9 (Asahi Kasei) with a melting point of 217'C. When we measured local high-frequency adhesive strength, we found that the nylon 6.9 adhesive had no adhesive strength, and the polyamide resin adhesive with a melting point of 45°C had a melting point too low to adhere well to the skeleton and had a hard texture. .

Table 4 Example 5 The same high-frequency adhesive resin powder used in Example 1 was mixed with a 10M thick cotton aggregate (Figure 7) with a bulk density of 20W/Q and a thickness of 2505/-/Q with a bulk density of 2505/-/Q. Natural pulp aggregate with five words (
Figure 9) was impregnated with 10g-/ρ and 1305'/fi, respectively, and sintered for 2 minutes in a hot air heating furnace at 180oC to form cotton fibers and natural pulp fiber skeletons as shown in Figures 8 and 10. A fixed high frequency adhesive cushioning material was prepared as shown.

Fabric weight: fit 350 f 7 m2 moquette type polyester 7' abric as surface material layer, 5 as base material
A high-frequency bonded body was created by using thick plywood, overlapping a high-frequency adhesive cushioning material layer between them, and bonding a portion using high-frequency waves. Table 5 shows the results of measuring the adhesive strength of this partially high-frequency bonded portion.

As shown in Table 5, the adhesive body of the present invention had a practical high-frequency adhesive strength, had appropriate hygroscopicity, and generated little static electricity.

In summary, the advantages of the present invention can be summarized as follows: ■ It can be bonded at high speed using a low-output high-frequency bonding machine, and A
It is a tangential body with strong high-frequency adhesive strength.

■ It is a high frequency adhesive that does not cause sparks.

■ High frequency adhesive film is not required.

■ As the number of parts is small, assembly and assembling processes can be streamlined.

■ Since there are fewer parts, there is less loss and it is an inexpensive high-frequency adhesive.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing an embodiment of a high-frequency bonded body using PVC leather as the covering material layer; The figure is a perspective view showing an embodiment of a high-frequency bonded body using fabric as the covering material layer, and FIG. 4 is a sectional view taken along line BB' at the high-frequency bonded portion of the high-frequency bonded body of FIG. 6. Figure 5 is an electron micrograph showing the skeletal structure of urethane foam as the skeleton of a high-frequency adhesive cushioning material, and Figure 6 is an electron micrograph showing the structure of a high-frequency adhesive cushioning material in which powder adhesive is adhered to the urethane foam skeleton. Figure 7 is an electron micrograph showing the fine structure of edited coalescence, Figure 8 is an electron microscope photograph showing the fine structure of high-frequency adhesive cushioning material in which powder adhesive is adhered to the cotton aggregate skeleton, and Figure 9 is an electron microscope photograph showing the fine structure of the edited coalescence. FIG. 10 is an electron micrograph showing the microstructure of a natural pulp fiber aggregate. FIG. 10 is an electron micrograph showing the microstructure of a high-frequency adhesive cushioning material in which a powder adhesive is adhered to a natural pulp fiber skeleton. 1... High frequency adhesive part 2... Covering material layer 6...
High-frequency adhesive cushioning material 4...Base material layer Applicant: Asahi Kasei Corporation Agent Yutaka 1) Yoshio Figure 1 Figure 2 Figure 3! Figure 4 Figure 5 (ooP qn Figure 6 100 Fki Figure 7 10 (f = Figure 9 ooPqn Figure 10 100P Continued amendments Written by: December 23, 1981 Mr. Kazuo Wakasugi, Commissioner of the Patent Office) 1 Indication of the case Japanese Patent Application No. 57-201033 2 Name of the invention High-frequency adhesive 3. Person making the amendment Relationship to the case Patent applicant Asahi Kasei Kogyo 1-2-6 Dojimahama, Kita-ku, Osaka-shi, Osaka (003) Representative Director and President of Co., Ltd. Teru Miyazaki 1 Agent Room 204, Sanpaku Building, 1-4-1 Yurakucho, Chiyoda-ku, Tokyo Telephone: 501-21385 Subject of Amendment 6 Contents of Amendment (1) Scope of Claims in the Specification The correction is made as shown in the attached sheet. (2) "Urethane foam skeleton high-frequency adhesive powder" in lines 15 and 16 of No. 4 of the specification is corrected to "Urethane foam skeleton high-frequency adhesive powder." (3) Press "vinylidene chloride resin, vinyl chloride resin" on page 7, lines 7 to 8 with "vinylidene chloride copolymer resin, salt 1 vinyl copolymer resin" by n'J pressure. (4 ) On page 10, lines 19 to 20, "as vinyl chloride resin" is corrected to "as vinyl monochloride copolymer resin." (5) On page 12, lines 18 to 19, [2] "Made by inter-knitting or interweaving two or more types"
I am corrected. Claims (1) A high-frequency bonded body comprising a base material layer, a high-frequency adhesive cushioning material layer, and a facing material layer in this order, and a portion thereof is frequency-bonded at one location. (2) The high-frequency adhesive body according to claim 1, wherein the base material layer is a base material selected from hardboard, resin board, plywood, and metal plate. (3) The high-frequency adhesive body according to claim 1, wherein the high-frequency adhesive cushioning material layer is a cushioning material in which high-frequency adhesive resin powder is adhered in the form of particles to a polyurethane foam skeleton. (4) The high-frequency adhesive body according to item 1 of the patent application, wherein the facing material layer is a facing material selected from fabric, natural leather, or synthetic leather. (5) The high-frequency adhesive body according to claim 3JJ, wherein the high-frequency adhesive resin powder is a powder selected from vinylidene chloride copolymer resin, vinyl chloride copolymer resin, and/or polyacid resin. (6) the powder has a content of 59% or more to the foam skeleton, 180% or more;
1. The high-frequency adhesive according to claim 1, 2 or 3, which is a cushioning material formed by adhering adhesive.

Claims (1)

[Scope of Claims] (1) A high-frequency bonded body comprising, in order, a base material layer, a high-frequency applicability cushioning material layer, and a surface material layer. A high-frequency bonded body characterized by being partially bonded by cylindrical frequency bonding. (2) The high-frequency adhesive body according to claim 1, wherein the base material is a base material selected from hardboard, resin board, plywood, and plywood. (3: The high-frequency adhesive body according to claim 1, wherein the high-frequency adhesive cushioning material layer is a cushioning material made of a polyurethane foam skeleton and high-frequency adhesive resin powder in the form of particles. (4) Facing material layer Claim 1 is a covering material selected from fabric, natural leather, or synthetic leather.
High frequency adhesive body as described in section. (5) The high-frequency adhesive resin powder is a powder selected from vinylidene chloride resin, vinyl chloride military composite resin, and/or polyamide resin, according to claim 41 [! Encircle 3
High frequency adhesive body as described in section. (6) The powder contains the foam skeleton 5 fl/ or more, 1
809/ below! The high-frequency adhesive according to claim 1, claim 2, or claim 3, which is a cushioning material made of 11g sheet.