CN214415013U

CN214415013U - Cover

Info

Publication number: CN214415013U
Application number: CN201890001424.1U
Authority: CN
Inventors: 陈贞儒
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2017-12-28
Filing date: 2018-12-21
Publication date: 2021-10-19
Anticipated expiration: 2028-12-21
Also published as: JP2019118811A; WO2019131480A1; JP7126440B2; TW201929797A; TWI785176B

Abstract

A heating device (50) is provided with: a cover body part (51) covering both eyes; a heating element (100) provided on the cover body part (51); and a pair of ear loops (52L, 52R) that are joined to both longitudinal ends of the hood body portion (51) and that are held by the hood body portion (51) so as to cover both eyes of the wearer, and that satisfy the following conditions. (condition) (i) the ear hanging part (52) has a hole (54) for hanging the ear, and when the maximum length of the hole (54) is La (mm), and the length from the end part of one hole (54) on the side of the cover main body part (51) to the end part of the other hole (54) on the side of the cover main body part (51) is Lb (mm), (La x 2+ Lb) < 285); (ii) a stress (N) at which the cover body part (51) is elongated by 4cm in the longitudinal direction is less than 70N; (iii) the percentage change of stress in the La direction of the ear hook part (52) represented by the following formula (1) is 35% or more. Stress change rate (%) { [ stress (N) at 100% elongation) ] - [ stress (N) at 10% elongation recovery ]/stress (N) at 100% elongation) } × 100 (1).

Description

Cover

Technical Field

The present invention relates to a cover.

Background

In recent years, the function of a mask for covering eyes and the periphery of eyes has been diversified, and various masks have been developed. For example, there has been conventionally used an eye-cup type warmer in which a heat generating body utilizing oxidation heat generated by oxidation reaction of an oxidizable metal is accommodated inside. The heat-insulating device of the eyeshade type is widely preferred because it heats the eyes of the wearer by the heat generating body and is used by hanging a pair of ear hanging parts on the left and right ears, and is lightweight and simple to use.

On the other hand, eye shields are increasingly expected. For example, patent document 1 discloses an eye-shield type warmer in which the position of the ear-shield connection portion, the shape of the opening, the slit, and the like are particularly limited from the viewpoint of easily attaching the ear-shield portion to the ear and easily attaching the cover main body to the face.

Documents of the prior art

Patent document

Patent document 1: japanese patent application laid-open No. 2008-295779

Disclosure of Invention

The present invention provides a cover, which is provided with: a mask body covering both eyes; a heating element provided in the cover main body; and a pair of ear loops joined to both longitudinal ends of the cover main body and held by the cover main body so as to cover both eyes of a wearer, and the following conditions are satisfied.

(Condition)

(i) The ear portion has an opening for a hanging ear, and when the maximum length of the opening is La (mm), and the length from the end portion on the cover main body side in La (mm) of one opening to the end portion on the cover main body side in La (mm) of the other opening is Lb (mm), (La × 2+ Lb) < 285;

(ii) a stress at which the cover main body is elongated by 4cm in the longitudinal direction is less than 70N;

(iii) a stress change rate in the La direction of the ear portion represented by the following formula (1) is 35% or more,

stress change rate (%) { [ stress (N) at 100% elongation) ] - [ stress (N) at 10% elongation recovery ]/stress (N) at 100% elongation) } × 100 (1).

Drawings

The above objects, other objects, features and advantages will be further apparent from the following description of preferred embodiments and the accompanying drawings.

Fig. 1 is a plan view schematically showing a state in which a hanger part of a warmer according to an embodiment is opened.

Fig. 2 is a plan view schematically showing a state before the hanger part of the warmer according to the embodiment is opened.

Fig. 3 is an exploded perspective view of the warmer shown in fig. 1.

FIG. 4 is a plan view schematically showing a heat generating element according to the embodiment.

FIG. 5 is a sectional view schematically showing a heat generating element according to the embodiment.

Fig. 6 is a plan view showing a modification of the hole of the ear portion of the heating appliance.

Detailed Description

In recent years, eye-mask type warming appliances have been used in various ways, and not only in a state where the wearer stands up his or her upper body, but also in a supine position or in a lateral position. Therefore, in the heat appliance of the eye shield type of the related art as disclosed in patent document 1, a new problem as described below occurs: that is, when used in a lateral position, the cover is displaced in the lateral direction and a gap is created between the cover and the wearer, making it difficult to sufficiently obtain the heating effect originally possessed by the cover. Specifically, the cover is difficult to be brought into close contact with the wearer's eye along the shape of the nose periphery due to the rigidity of the heat generating element housed in the heater, and a gap is likely to be formed between the wearer and the cover when the wearer is in a lateral position.

Here, in the case where it is intended to closely attach the cover to the face of the wearer by shortening the length of the cover in the lateral width direction without any special design in order to suppress the lateral displacement of the eye-cup type warmer, for example, stress generated from the ear hanging part increases at the portion of the wearer where the ear hanging part is worn or behind the ear, and a feeling of pressure tends to be generated.

Therefore, the present inventors have made diligent studies from the viewpoint that even when the length of the cover in the lateral width direction is shortened as compared with the conventional art, the feeling of pressure at the portion where the ear-hook portion is worn or behind the ear can be reduced, and also the positional displacement of the cover can be suppressed even in a lateral recumbent position, and as a result, they have found that: when the mask is worn, the wearer can press the vicinity of the eyebrow part of the wearer tightly without pressing the wearer's tail of the eye to the temple and the tail of the eye to the earlobe, thereby effectively suppressing lateral displacement of the mask, improving the comfort and reducing the pressure. Further, as a result of further studies on the cover from the viewpoint of achieving a good balance between the feeling of comfort and the feeling of pressure and solving a technical problem that a wide range of heating can be uniformly performed even in a lateral recumbent position, it was found that an effective measure for solving the technical problem is that the cover satisfies a specific condition, and the present invention was completed.

According to the present invention, a cover that can provide a good balance between a snug feeling and a compressive feeling can be provided. In addition, the cover of the present invention can heat a wider range than the cover of the prior art, and can obtain a uniform warming sensation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are denoted by the same reference numerals, and the description thereof is omitted as appropriate. Hereinafter, a case where the cover of the present invention is a so-called eye-cup type warmer will be described.

[ warming implement ]

First, an example of the heating tool 50 according to the present embodiment will be described with reference to fig. 1 to 3.

The warmer 50 of the present embodiment is of an eye shield type, and is configured to cover both eyes of a wearer with a cover main body portion 51, and to supply water vapor heated to a predetermined temperature to the eyes and their surroundings from a pair of heating elements 100 provided in the cover main body portion 51.

As shown in fig. 1, the heating device 50 includes a cover main body portion 51 and a pair of ear portions 52(52L, 52R) each having a hole 54(54L, 54R) into which the ear portion is inserted.

The heating device 50 is worn by attaching the respective ear loops 52 to the ears of the wearer and covering the eyes of the wearer with the cover main body portion 51. The heating device 50 is configured to: in this wearing state, warm steam generated from the heating element 100 described below is applied to the eyes of the wearer.

Fig. 2 is a plan view schematically showing a state before the ear portion 52 of the heating appliance 50 is opened. In this figure, the pair of ear portions 52 are folded toward the inside of the heating appliance 50 and joined to each other at the longitudinally central portion of the cover main body portion 51. In the region of the joint, suture holes or half-cuts are provided. That is, a pair of ear loops 52 formed in a series is bisected by a suture hole or a half-cut groove, and the wearer cuts the suture hole or the half-cut groove, thereby obtaining an ear loop portion 52L and an ear loop portion 52R. Thereafter, the ear portion 52L and the ear portion 52R are turned back outward, whereby the state shown in fig. 1 can be achieved. That is, the engaging lug portions 52 are respectively extended obliquely downward from the vicinity of both end portions in the longitudinal direction of the cover main body portion 51. As shown in fig. 1, when the ear hanging portion 52 is opened outward from the cover main body portion 51, the ear hanging portion 52 is shaped like a Chinese character 'eight' in a plan view. When the engaging lug 52 is opened outward from the cover main body 51, the hole 52 extends obliquely downward with respect to the longitudinal direction of the cover main body 51.

By adopting such a configuration, the mask main body portion 51 is more easily attached to the face when worn.

Fig. 3 is an exploded perspective view of the warmer 50 shown in fig. 1. As shown in fig. 3, the cover main body portion 51 is constituted by a bag body 53, and a pair of heating elements 100 are provided inside the bag body 53.

The cover main body 51 has a rectangular shape having a longitudinal direction X and a width direction Y orthogonal thereto, and is substantially bilaterally symmetrical. The cover main body portion 51 is made of a flexible soft sheet material, and has extensibility as described below. The main body 51 may or may not have elasticity, but is preferably elastic from the viewpoint of pressing the warmer 50 tightly near the eyebrow part to give a more strong feeling of comfort.

The bag body 53 constituting the cover main body portion 51 includes: a first bag sheet 531 located on the side close to the skin surface of the wearer, and a second bag sheet 532 located on the side away from the skin surface of the wearer. Here, the first bag sheet 531 and the second bag sheet 532 are provided so as to sandwich the heat generating element 100 described below.

The first bag sheet 531 and the second bag sheet 532 have the same shape and are substantially elliptical. The outer shapes of the first bag sheet 531 and the second bag sheet 532 form the outer shape of the cover main body portion 51. The first bag sheet 531 and the second bag sheet 532 are stacked and at least a part of their peripheral edges are joined together, and the center portion in the Y direction is joined along the X direction, thereby forming the bag 53. For joining the first bag sheet 531 and the second bag sheet 532, for example, a hot melt adhesive may be used. The heating element 100 may be fixed to the bag 53 by an adhesive, heat sealing, or the like.

The first and

second bag sheets

531 and 532 may be any sheet having extensibility and capable of supplying air to the internal heat-generating element 100, and for example, a fiber sheet typified by a nonwoven fabric may be used. For example, one or two or more selected from the group consisting of a needle-punched nonwoven fabric, a through-air nonwoven fabric, and a spun-bonded nonwoven fabric can be used.

In the pouch body 53, a notch portion 57 (notch portion 571, notch portion 572) having a substantially V-shape cut inward in the X direction from each of the 2 long sides extending in the Y direction is formed at the central portion of the long side. The notch portion 571 and the notch portion 572 are cut into different degrees. When the warmer 50 is worn, the notch 571 is located at or near the glabella of the wearer. The recess 572 is located at the bridge of the nose of the wearer when the warming device 50 is worn. Therefore, the notch portion 572 is generally cut into a greater extent than the notch portion 571.

Further, as shown in fig. 1, in the bag 53, a region in which the slit connected to the notch 572 is in the center of the bag 53 and separates the heat generating element 100 extends from the lower end of the bag 53.

The hanger 52 of the warmer 50 is disposed on the first bag sheet 531 before use, as shown in fig. 3. In a state before use, that is, in a state where the left and right ear portions 52 are positioned on the first bag sheet 531, the outline formed by the left and right ear portions 52 is substantially the same as the outline of the first bag sheet 531.

The ear hanging parts 52 have a function to hold the warming appliance 50 on the face of the wearer.

The ear hook portion 52 is used as a pair, and the ear hook portion 52L and the ear hook portion 52R are provided at each end in the longitudinal direction (X direction) of the cover main body portion 51. More specifically, when the hood main body portion 51 side is a proximal end and the side away from the hood main body portion 51 is a distal end, the ear portion 52 is joined to the sheet (first bag sheet 531) on the wearer side of the hood main body portion 51 at the proximal end side region thereof.

The ear hanging portions 52L and the ear hanging portions 52R have respective joining regions overlapping the cover main body portion 51.

The ear portion 52 preferably has extensibility in the lateral width direction.

The ear portion 52 may be formed of a single-layer sheet or may be a laminate of multiple-layer sheets. As the ear hanging part 52, a fiber sheet made of a fiber material such as a nonwoven fabric can be used. The ear hanging part 52 may be made of the same material as the bag body 53 or may be made of a material different from the bag body 53.

The planar shape of the pair of ear portions 52 is not particularly limited, but is preferably as follows: when the mask body portion 51 is bisected at the longitudinal center line, the planar shape on the right side and the planar shape on the left side of the mask body portion 51 are the same shape, respectively. For example, a substantially square shape may be cited.

The hole 54 is a hole for attaching the ear portion 52 to the ear of the wearer, and is an opening penetrating the ear portion 52. The aperture 54 is disposed substantially centrally of the ear portion 52. In addition, the hole 54 is formed in a region other than a joining region where the cover main body portion 51 and the lug portion 52 are joined.

The shape of the hole 54 is not particularly limited, but is formed into a substantially triangular shape (drop shape) having a long lateral width and rounded corners extending from the base end to the tip end of the tab portion 52 in fig. 1 and 2. In addition, the holes 54 may be vertically symmetrical or asymmetrical. That is, the upper and lower radii of curvature may be the same or different.

When the engaging lug 52 is opened outward from the cover main body 51, the hole 54 extends downward and is inclined with respect to the longitudinal direction of the cover main body 51.

[ heating element ]

Next, the heating element 100 provided in the warmer 50 will be described. In the present embodiment, a pair of heating elements 100 are disposed in the heating device 50, and each heating element 100 covers the eyes of the wearer.

The planar shape of the heat generating element 100 is substantially square. The rigidity of the heating element 100 is greater than that of the cover body 51, and the entire heating element 100 is less likely to expand and contract than the cover body 51.

Fig. 4 is a plan view showing an example of the heat generating element 100 of the present embodiment. In addition, fig. 5 is a sectional view a-a of fig. 4. The heat generating body 100 of the present embodiment includes a heat generating member 10 and a housing 20 for housing the heat generating member 10.

The heat generating member 10 includes an oxidizable metal, a carbon component, a water absorbing agent, water, a reaction accelerator, and the like.

Specifically, the heat generating member 10 generates heat by an oxidation reaction of an oxidizable metal to provide a heating effect, and a heat generating member having a performance of a heat generating temperature of 30 ℃ or more and 70 ℃ or less as measured in accordance with JIS S4100 can be used. The heat generating member 10 generates water vapor by heating the contained water.

The oxidizable metal is a metal that generates heat of oxidation reaction, and examples thereof include powder or fiber of one or more metals selected from iron, aluminum, zinc, manganese, magnesium, and calcium.

The carbon component has water retention capacity, oxygen supply capacity, and catalytic capacity, and for example, one or more materials selected from activated carbon, carbon black, acetylene black, and graphite can be used.

The heat generating member 10 may contain a water absorbing agent in order to retain water and efficiently perform an oxidation reaction of the oxidizable metal. As the water absorbing agent, a polymer having water absorption property or a powder having water absorption property can be used.

In the present embodiment, the heat generating member 10 is exemplified as a sheet, but the heat generating member 10 may be in the form of powder or a sheet. However, the sheet-like shape is preferable in terms of excellent feeling in use.

Such a sheet-like heat-generating body can be obtained by any method such as a method of making a sheet together with fibers, a method of coating, and a method of pressing with a press or the like.

From the viewpoint of obtaining appropriate rigidity, the thickness of the heat generating member 10 is preferably 0.2mm or more, more preferably 0.4mm or more, and still more preferably 0.5mm or more. From the viewpoint of improving the operability, the thickness of the heat generating member 10 is preferably 5mm or less, more preferably 3mm or less, and still more preferably 2mm or less.

By setting the thickness of the heat generating member 10 in the above range, the heat generating effect can be improved, and the heat generating body 100 can be made to a size that is easy to use. Further, since the heat generating portion 10 has appropriate rigidity, the cover can feel more comfortable when worn.

The thickness of the heat generating member 10 indicates an average thickness.

Next, the container 20 constituting the heat generating element 100 will be described.

At least a portion of the receiving body 20 is air-permeable, and the receiving body 20 receives the heat generating portion 10. The container 20 can be configured by, for example, as shown in fig. 5, laminating peripheral edge portions 203 of 2 sheets (first container sheet 201, second container sheet 202).

The first housing sheet 201 is disposed on the side closer to the skin of the wearer than the heat generating portion 10, and the second housing sheet 202 is disposed on the side farther from the skin of the wearer than the heat generating portion 10.

In the case where the warming instrument 50 supplies water vapor to the eyes or the skin, the first container sheet 201 is preferably a sheet having good air permeability, and the second container sheet 202 is preferably a sheet having poor air permeability, from the viewpoint of efficiently supplying water vapor to the eyes or the skin of a person. That is, the second containing body sheet 202 is more preferably less air-permeable than the first containing body sheet 201, and more preferably air-impermeable.

In the case where the heat generating member 10 has a heat generating function by oxidation of an oxidized metal, if the air permeability of the first housing sheet 201 and the second housing sheet is adjusted in order to efficiently supply water vapor to the eyes or the skin by the heating appliance 50 as described above, the heat generating member 10 preferentially sucks air from the first housing sheet 201 side and performs a heat generating reaction. Therefore, from the viewpoint of obtaining a balance between a conformable feeling and a heat-generating reaction and appropriately heating the eyes or the skin, the air permeability of the first containing sheet 201 is preferably 3,000 to 6,000 seconds/100 ml, and more preferably 4,000 to 6,000 seconds/100 ml.

Further, "air permeability" is a value measured in accordance with JIS P8117, and 100ml of air is passed through 6.45cm under a constant pressure²Is defined by the time of the area of (a).

As the air-permeable sheet, a resin porous sheet or a resin sheet having air-permeable pores can be used, and for example, one or two or more of polyethylene, polypropylene, and an ethylene-vinyl acetate copolymer can be used.

As the second container sheet 202, a sheet substantially impermeable to oxygen can be used, and for example, one or two or more of polyolefin such as polyethylene and polybutadiene, polyvinyl chloride, polyvinylidene chloride, polyester, polyether, polysulfone, and polyamide can be used.

The heater 50 of the present embodiment has oxidizable metal that is oxidized by oxygen, and therefore is usually sealed in an oxygen-barrier bag and stored.

The warmer 50 of the present embodiment includes: a mask body 51 covering both eyes; a heating element 100 provided in the cover main body 51; and a pair of ear loops 52(52L, 52R) that are joined to both longitudinal ends of the hood main body portion 51, respectively, and that are held by the hood main body portion 51 so as to cover both eyes of the wearer, and that satisfy the following conditions.

(Condition)

(i) The ear hanging part 52 has a hole 54 for hanging, and when the maximum length of the hole 54 is La (mm) and the length from the end part of one hole 54 on the cover main body part 51 side in La (mm) to the end part of the other hole 54 on the cover main body part 51 side in La (mm) is Lb (mm), (La × 2+ Lb) < 285;

(ii) stress (N) when the cover main body portion 51 is elongated by 4cm in the longitudinal direction is less than 70N;

(iii) the rate of change in stress in the La direction of the tab portion 52 represented by the following formula (1) is 35% or more.

Stress change rate (%) { [ stress at 100% elongation (N) ] - [ stress at 10% elongation (N) ]/stress at 100% elongation (N) } × 100(1)

In the condition (i), the "maximum length of the hole 54", i.e., la (mm), is a length of the ear portion 52 before the use of the heating device 50 when no load is applied. In the heating tool 50, as shown in fig. 1 and 2, both ends of the hole 54 in the X direction are formed in circular arcs, and a straight line connecting deepest points of the circular arcs is la (mm). In the case where La in the hole 54L is different from La in the hole 54R, La of the hole 54 is set as an average value of the both.

In addition, in the case where the ear portion 52 has a slit connected to the hole 54, the slit is not included in the maximum length La.

In the case where the hole 54 has a tear-drop shape with the hood main body portion 51 side as the apex as shown in fig. 6, a straight line connecting the apex of the hole 54 on the hood main body portion 51 side and the apex of the hole 54 on the side opposite to the hood main body portion 51 becomes la (mm).

Further, in the case where the hole 54 of the ear hanging portion 52 is a slit (e.g., a T-shaped slit) having no opening area for passing the ear, the maximum length of the slit becomes la (mm).

From the viewpoint of easily attaching the ear hook portion 52 to the ear of the user and reducing the feeling of pressure, the lower limit value of la (mm) is preferably 25(mm) or more, more preferably 35(mm) or more, further preferably 45(mm) or more, and particularly preferably 50(mm) or more.

On the other hand, from the viewpoint of suppressing the uncomfortable feeling that the ear part 52 is too long to be properly hooked on the ear part and improving the comfortable feeling of the heating appliance 50, the upper limit value of la (mm) is preferably 90(mm) or less, more preferably 80(mm) or less, further preferably 70(mm) or less, and particularly preferably 65(mm) or less.

The length lb (mm) from the end of the one hole 54L on the cover main body portion 51 side to the end of the other hole 54R on the cover main body portion 51 side in la (mm) is a length measured in a state where the pair of lug portions 52 is spread out and the entire warmer 50 is flattened. As shown in fig. 1, in the warmer 50, Lb is the shortest distance between the

holes

54L and 54R. In other words, Lb is the length between the apex of the arc on the base end side of the hole 54L and the apex of the arc on the base end side of the hole 54R.

When the hole 54 of the ear portion 52 is a slit (e.g., a T-shaped slit) having no opening area for passing an ear portion therethrough, Lb is the length between the proximal end side end of one slit and the proximal end side end of the other slit.

From the viewpoint of sufficiently covering both eyes of the user, the lower limit value of lb (mm) is preferably 110(mm) or more, more preferably 120(mm) or more, and still more preferably 130(mm) or more.

On the other hand, from the viewpoint of improving the comfort of the heater 50, the upper limit value of lb (mm) is preferably 230(mm) or less, more preferably 200(mm) or less, and still more preferably 180(mm) or less.

The cover main body portion 51 and the ear portion 52 may be integrated (one continuous sheet).

The warmer 50 satisfies (La × 2+ Lb) <285 in the condition (i). This makes it easy to make the warmer 50 fit the wearer appropriately. (La × 2+ Lb) (mm) corresponds to a length from the rear of one ear to the rear of the other ear of the wearer when the warmer 50 is worn, and it is intended that the close fitting feeling of the warmer 50 can be improved by appropriately controlling this length. (La × 2+ Lb) (mm) is preferably less than 285, and from the viewpoint of improving the fit feeling, it is preferably 280 or less. On the other hand, from the viewpoint of reducing the feeling of pressure, (La × 2+ Lb) (mm) is preferably 250 or more, and more preferably 260 or more, 265 or more, and 270 or more in this order.

In the condition (ii), the "longitudinal direction of the cover main body portion 51" refers to the X direction shown in fig. 1. The stress (N) when the cover main body portion 51 is elongated by 4cm in the longitudinal direction is a stress generated in the stretching direction when the wearer wears the thermal appliance 50, and the smaller the stress, the easier the cover main body portion 51 is to expand, and the intention is to reduce the feeling of pressure. In the heating appliance 50, the stress (N) when the cover main body portion 51 is elongated by 4cm in the longitudinal direction is set to less than 70N, preferably 50N or less, more preferably 45N or less, still more preferably 35N or less, and particularly preferably 30N or less. This allows the cover main body portion 51 to have expandability, reduces the feeling of pressure on the portion where the ear hook portion 52 is worn or behind the ear, and also easily increases the pressure near the brow portion of the wearer. This can effectively suppress lateral displacement of the heater 50. As a result, the eye circumference can be uniformly heated, and further, the feeling of warmth can be more widely felt, so that the feeling of relaxation of the whole body can be easily obtained.

On the other hand, the lower limit of the stress is not particularly limited, but is preferably 10N or more, more preferably 15N or more, and further preferably 20N or more, from the viewpoint of improving the operability of the heater 50 and obtaining rigidity, strength, and the like.

When the elongation of the hood main body portion 51 in the longitudinal direction is less than 4cm, the stress (N) when the hood main body portion 51 is elongated 2cm in the longitudinal direction is preferably less than 30N, more preferably 26N or less, and still more preferably 24N or less.

The phrase "extending the cover main body portion 51 by 4cm in the longitudinal direction" means extending the region other than the heating element 100 in the cover main body portion 51, and is substantially equivalent to extending the bag body 53 by 4cm in the longitudinal direction. The elongation of the cover main body portion 51 is about 50% on the premise that the condition (i) is satisfied.

In the heating appliance 50 of the present embodiment, since the cover main body portion 51 has the notch portion 57 at the longitudinal center portion, the following occurs: that is, when the cover body portion 51 is elongated in the longitudinal direction, a load is applied to the notch portion 57, and the stress of the cover body portion 51 cannot be appropriately measured. Therefore, it is preferable to divide the cover main body 51 into two parts in the lateral direction, and measure the divided parts using one of the cover main bodies 51.

In the condition (iii), the "La direction of the ear hanging portion 52" refers to the longitudinal direction of La shown in fig. 1. The "La direction of the ear portion 52" is preferably a direction in which the ear portion 52 is easily extended, but is not limited to a direction parallel to the X direction.

The "stress change rate" expressed by the above equation (1) means how much stress the lug part 52 wants to return to its original position after any one of the lug parts 52 is extended in the La direction. That is, the higher the stress generated when the ear portion 52 is elongated by 100% and then restored to 10%, the higher the stress at which the ear portion 52 is intended to return to its original position, and the lower the rate of change in the stress. In other words, the higher the stress change rate, the lower the stress at which the temporarily elongated ear portion 52 is intended to return to its original position, and as a result, the sense of pressure on the portion of the wearer to which the ear portion 52 is attached or behind the ear can be reduced. On the other hand, by combining the conditions (i) and (ii), a good fit feeling can be obtained.

When the stress change rate is different between the ear portion 52L and the ear portion 52R, the stress change rate is an average value of the two.

In the warmer 50, by setting the stress change rate to 35% or more, the restorability against the elongation of the ear hanging portion 52 is lowered, and the feeling of pressure on the portion where the ear hanging portion 52 is worn or behind the ear can be easily reduced. In addition, from the viewpoint of improving the conformable feeling obtained by the synergistic effect with the conditions (i) and (ii), the stress change rate is preferably 40% or more, more preferably 50% or more, and further preferably 60% or more. On the other hand, the stress change rate is preferably 80% or less, more preferably 75% or less, and further preferably 72% or less, from the viewpoint of maintaining a snug feeling.

The stress change rate (%) of the ear portion 52 can be controlled by the material constituting the ear portion 52 or the outer shape of the ear portion 52 (specifically, for example, the presence or absence of a slit from the outer edge).

When the elongation in the La direction of the ear portion 52 is less than 100%, the 50% stress change rate represented by the following formula (2) is set to 35% or more, whereby the feeling of pressure on the portion where the ear portion is worn or behind the ear can be easily reduced. From the same viewpoint, the 50% stress change rate is preferably 40% or more, and more preferably 45% or more. On the other hand, the stress change rate is preferably 60% or less, more preferably 50% or less, from the viewpoint of maintaining a snug feeling.

50% stress change rate (%) { [ stress at 50% elongation (N) ] - [ stress at 5% elongation (N) ]/stress at 50% elongation (N) } × 100 (2)

In the present embodiment, the stress (N) at the time of elongation of the cover main body portion 51 and the ear portion 52 can be measured by a method referred to in JIS L1913.

In the case of the cover main body 51, the sample width was set to 80. + -.10 mm, the initial length of the sample in the tester was set to 80. + -.10 mm, and the tensile strength when the cover main body 51 was elongated 4cm in the longitudinal direction at a tensile speed of 300mm/min was measured.

In the case of the hanger part 52, the specimen width was set to 80. + -.10 mm, the specimen was stretched and the initial length in the tester was set to 55. + -.15 mm, and the tensile strength was measured when the specimen was elongated in the La direction by a predetermined length (100% of the initial length in the case of a stress at 100% elongation and 50% of the initial length in the case of a stress at 50% elongation) at a tensile speed of 300 mm/min.

Specific contents thereof will be explained in the following examples.

The stress (N) at the time of recovery of 10% elongation of the ear hook portion 52 was measured by setting the sample width to 80 ± 10mm with reference to JIS L1913, stretching the sample to set the initial length thereof in a tester to 55 ± 15mm, stretching the sample to a length of 100% of the initial length in the La direction at a stretching speed of 300mm/min, and then measuring the tensile strength at the time of recovery to a length corresponding to 10% of the initial length. Similarly, the stress (N) at the time of recovery of 5% elongation is a length at which the film is elongated by 50% of the original length in the La direction under the same measurement conditions as the above-described stress at the time of recovery of 10% elongation, and thereafter, the tensile strength at the time of recovery to a length corresponding to 5% of the original length is measured.

Here, in the eye-cup type warmer 50, even a fine gap tends to have a significant influence on the warming effect, and depending on the case, there is a tendency that: that is, a large amount of oxygen enters from the gap in a short time, and excessive heat generation occurs. Therefore, a higher level of the conformable feeling is required. On the other hand, since the comfort feeling and the compression feeling have a so-called "trade-off" relationship, it is important to appropriately control the balance of the load applied to the wearer in the entire warmer 50.

In the warmer 50 according to the present embodiment, by satisfying all of the above conditions (i) to (iii), the warmer 50 can be easily attached to the vicinity of the eyebrow portion of the wearer, the fitting feeling can be improved, the load applied to the portion of the wearer where the ear hook portion 52 is attached or the rear of the ear can be reduced, and the oppressive feeling can be suppressed. As a result, even in the lateral position, the positional displacement of the heating device 50 can be effectively suppressed, and the heating effect obtained by the heating device 50 can be sufficiently obtained. In addition, as the comfort is improved, a more uniform warming effect is obtained over the entire warmer 50. Further, according to the warming instrument 50, by suppressing the positional deviation around the eyes, the feeling of warmth can be more widely felt, and the feeling of relaxation of the whole body can be easily obtained.

Further, the warmer 50 has the following configuration, and can more effectively improve the balance between the comfort and the compression feeling, and obtain a good warming effect.

In the warming appliance 50, it is preferable that: when the length in the width direction at the center in the longitudinal direction of the cover main body portion 51 is Lc (mm), Lc/(La × 2+ Lb) is 0.2 or more and 0.4 or less. That is, by controlling the length of the warmer 50 in the longitudinal and lateral directions, the warmer 50 can be easily attached to the vicinity of the eyebrow region of the wearer.

In the heating appliance 50 of the present embodiment, "Lc" means the length of a portion other than the slit in the center line in the vertical direction of the cover main body portion 51 shown in fig. 1.

From the viewpoint of sufficiently covering both eyes of the user, the lower limit value of lc (mm) is preferably 50(mm) or more, more preferably 60(mm) or more, and still more preferably 70(mm) or more.

On the other hand, from the viewpoint of making the fitting feeling of the warmer 50 good and reducing the unpleasant feeling, the upper limit value of lc (mm) is preferably 180(mm) or less, more preferably 150(mm) or less, still more preferably 110(mm) or less, and particularly preferably 100(mm) or less.

In the heating device 50, the stress (N) at 100% elongation in the La direction of the lug portion 52 is preferably 2 or more, more preferably 3 or more, and still more preferably 3.5 or more. This makes it easy to extend the ear portion 52 during use, to easily attach the ear portion 52 to the ear, and to easily suppress a feeling of pressure on the portion where the ear portion 52 is attached or behind the ear.

On the other hand, the upper limit of the stress (N) at 100% elongation in the La direction of the ear portion 52 is not particularly limited, but is preferably 15 or less, more preferably 10 or less, from the viewpoint of facilitating elongation of the ear portion 52 and easy attachment of the ear portion 52 to the ear portion in use, that is, from the viewpoint of reducing the feeling of pressure.

While the embodiments of the present invention have been described above with reference to the drawings, these are merely illustrative of the present invention, and various configurations other than the above-described configurations may be adopted.

The present invention further discloses the following covers, applications, and the like with respect to the above embodiments. The cover of the present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit of the present invention.

In the above embodiment, the heating element 100 based on the redox reaction has been described as the function of the cover, but the heating element is not limited to this, and the heating element may be heated by other methods, or may further have heat retention, moisture retention, cold retention, rapid cooling, light shielding, aroma, antibacterial, pressing, dust-proofing functions, and the like. As a specific cover, in addition to a cover having a steam heating function such as the heater 50, for example, the following may be adopted: (1) a sleep cover for shielding light by using a light shielding member; (2) the cover with the heat preservation function can be heated by a heater such as a microwave oven and the like and then the eye part is heated; (3) a cover which combines a cooling means such as a cold-retaining agent or a cold-feeling agent with a heat generating function and can heat and cool the eyes by heat generation; (4) a cover for using the member having the fragrant component together with the heating body to thereby bring a relaxing effect; (5) a cover having particles or spheres for exerting a pressure on the eyes to exert a finger pressure effect; (6) a cover which exerts a massage effect by vibrating it with electricity or the like.

Hereinafter, an example of a reference embodiment of the present invention will be described.

<1> a cover, comprising: a mask body covering both eyes; a heating element provided in the cover main body; and a pair of ear loops joined to both longitudinal ends of the cover main body and held by the cover main body so as to cover both eyes of a wearer,

the following conditions are satisfied:

(i) the ear portion has an opening for a hanging ear, and when the maximum length of the opening is La (mm), and the length from the end of the opening on the cover main body side in La (mm) to the end of the opening on the cover main body side in La (mm) on the other side is Lb (mm), (La × 2+ Lb) < 285;

<2> the cover according to <1>, wherein when lc (mm) is defined as a length in a width direction at a center in a longitudinal direction of the cover main body,

Lc/(La × 2+ Lb) is 0.2 to 0.4.

<3> the cover according to <1> or <2>, wherein a stress at 100% elongation in the La direction of the ear portion is 2N or more.

<4> the cover as stated in any one of <1> to <3>, wherein the ear hanging portions are nonwoven fabric.

<5> the cover according to any one of <1> to <4>, wherein a stress when the cover main body is elongated by 4cm in a longitudinal direction is 10N or more and less than 70N.

<6> the cover according to any one of <1> to <5>, wherein a stress when the cover main body is elongated by 2cm in a longitudinal direction is less than 30N.

<7> the cover according to any one of <1> to <6>, wherein the rate of change in stress in the La direction of the ear portion represented by the formula (1) is preferably 35% or more and 80% or less, more preferably 40% or more and 80% or less, and still more preferably 50% or more and 75% or less.

<8> the cover according to any one of <1> to <7>, wherein a rate of change in stress in the La direction of the ear portion represented by the following formula (2) is preferably 35% or more and 60% or less, more preferably 40% or more and 60% or less, further preferably 45% or more and 50% or less,

stress change rate (%) { [ stress (N) at 50% elongation ] - [ stress (N) at 5% elongation recovery ]/stress (N) at 50% elongation) } × 100 (2).

<9> the cover according to any one of <1> to <8>, wherein the ear portions are respectively extended obliquely downward from the vicinity of both end portions in the longitudinal direction of the cover main body.

<10> the cover according to any one of <1> to <9>, wherein the ear portion has a figure of eight in plan view when the ear portion is opened outward from the cover main body.

<11> the cover according to any one of <1> to <10>, wherein the opening portion extends obliquely downward with respect to a longitudinal direction of the cover main body when the ear portion is opened outward from the cover main body.

<12> the cover according to any one of <1> to <11>, wherein the heating element is in a sheet shape.

<13> the cover according to any one of <1> to <12>, wherein the heating element generates steam by an oxidation reaction of an oxidizable metal.

<14> the cover as stated in <13>, wherein the heat generating body includes a heat generating portion and a housing body housing the heat generating portion therein.

<15> the cover as stated in <14>, wherein said heat generating portion comprises an oxidizable metal, a carbon component, a water absorbing agent and water.

<16> the cover as stated in <14> or <15>, wherein the thickness of the heat generating portion is preferably 0.2mm or more, more preferably 0.4mm or more, and still more preferably 0.5mm or more, and on the other hand, is preferably 5mm or less, more preferably 3mm or less, and still more preferably 2mm or less.

<17> the cover according to any one of <14> to <16>, wherein the container is composed of a first container sheet and a second container sheet, the first container sheet has an air permeability of 3000 to 6000 seconds/100 ml, and the second container sheet is air-impermeable.

<18> the cover according to any one of <1> to <17>, wherein the pair of heating elements are disposed so as to cover both eyes.

<19> a method of using a mask, which is used in such a manner that both eyes are covered by the mask as stated in any one of <1> to <18 >.

[ examples ]

The present invention will be described in further detail below with reference to examples. However, the scope of the present invention is not limited to this embodiment.

< example 1>

An eyecup type warmer of the structure shown in table 2 was produced according to the following procedure.

[ preparation of Heat-generating powder Water Dispersion ]

Materials were prepared in the composition ratios shown in table 1, and were prepared according to the following procedure. An aqueous solution was prepared by dissolving xanthan gum in water, followed by dissolving tripotassium phosphate and potassium hydroxide. On the other hand, a powder prepared by premixing iron powder and activated carbon was prepared, and the premixed powder was added to the aqueous solution and stirred at 150rpm for 10 minutes by a disk turbine type stirring blade to obtain a slurry-like heat-generating powder water dispersion. After the heat-generating powder water dispersion was applied to the surface of a first water-absorbent sheet described below, sodium chloride was spread on the applied surface.

[ Table 1]

[ production of Heat-generating part ]

Paper made of wood pulp (weight per square meter 20 g/m) was used²Manufactured by Iyowa paper K.K.), Water-absorbent Polymer (spherical, average particle diameter 300 μm, manufactured by Aqualic CA, Japan catalyst, Ltd., weight per square meter 70g/m²) And wood pulp paper (weight per square meter 30 g/m)²Produced by Iyowa Kagaku K.K.) as a first water-absorbing sheet, and a polyethylene laminated paper (produced by NITTOKU Co., Ltd.) made of a wood pulp paper (having a weight per square meter of 50 g/m) was used²Manufactured by yiye paper corporation) as the second water absorbent sheet.

A polymer sheet used as a first water-absorbent sheet was prepared, and the heat-generating powder water dispersion prepared by the above-described method was applied to 25cm in thickness to give a thickness of approximately 3mm (application amount 1.7g)²(5 cm. times.5 cm) on the surface of the first water-absorbent sheet, 0.089g of common salt (Japanese pharmacopoeia sodium chloride: manufactured by Futian pharmaceutical Co., Ltd.) was spread on the coated surface, and a second water-absorbent sheet (25 cm) was used²The coated surface was covered (5 cm. times.5 cm), thereby producing a heat-generating part.

[ production of heating element ]

The first container sheet in the container was composed of a porous stretched polyethylene moisture-permeable film containing calcium carbonate (air permeability of 3,500 seconds according to JIS P8117). The second container sheet is made of a non-moisture-permeable film made of polyethylene. Water-absorbent paper (weight per square meter: 35 g/m) was laminated on one side of the second container sheet²) The sheet-like heat generating portions were positioned at the center on sheet 1, the first container sheet and the second container sheet were superposed so that the absorbent paper faced outward, and the sheets were joined to each other at the peripheral edge portions, thereby obtaining a rectangular heat generating body.

[ production of warming device ]

As the first bag sheet, a nonwoven fabric made of polypropylene (needle punching method, weight per square meter 80 g/m)²) A nonwoven fabric made of polyethylene terephthalate (hot air method, weight per square meter 30 g) was used as the second sheet for the bag/m²) As shown in fig. 3, the cover main body is produced by sandwiching two of the above-obtained heating elements between two bag sheets, and joining the first bag sheet and the second bag sheet to each other in the vicinity of the peripheral edge portion and the longitudinal center line. Further, a polypropylene nonwoven fabric (SMS (Spunbond/meltblow/Spunbond) method was used on the outer surface of the first bag sheet, and the weight per square meter was 40g/m²) And the ear hanging portion is mounted, thereby obtaining the warm implement of the eyecup type as shown in fig. 1. In addition, the above operations are performed in an atmosphere in which oxygen is not present. In addition, a downward slit (1.2cm) extending downward in the longitudinal direction of the cover main body from the vicinity of the outer end of the opening portion is provided.

La (mm), Lb (mm) and lc (mm) in the obtained warmer are shown in Table 2.

< example 2>

A heating device was obtained in the same manner as in example 1, except that la (mm), lb (mm), and lc (mm) were used as shown in table 2.

< example 3>

The heating devices were prepared so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the loops were made of polypropylene nonwoven fabric (SMS method, weight per square meter 50 g/m)²) Otherwise, a warmer was obtained in the same manner as in example 1.

< example 4>

< example 5>

< example 6>

The warmer was produced so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the ear portions were made of a polyurethane nonwoven fabric (spun-bonded method, weight per square meter 30 g/m)²)，Except for this, a warmer was obtained in the same manner as in example 1.

< example 7>

The warmer was prepared so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the ear portions were made of a polyurethane nonwoven fabric (spun-bonded method, weight per square meter 60 g/m)²) Otherwise, a warmer was obtained in the same manner as in example 1.

< example 8>

The heating device was produced so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the first bag body sheet of the cover main body was a polypropylene nonwoven fabric (spun-bonded method, weight per square meter 30 g/m)²) Otherwise, a warmer was obtained in the same manner as in example 1.

< example 9>

The heating device was produced so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the first bag body sheet of the cover main body was a polypropylene nonwoven fabric (SMS method, weight per square meter 50 g/m)²) Otherwise, a warmer was obtained in the same manner as in example 1.

< example 10>

A warmer was obtained in the same manner as in example 1, except that no slit was formed in the ear portion.

< comparative example 1>

< comparative example 2>

The heating device was produced so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the first bag body sheet of the cover main body was a polyethylene terephthalate nonwoven fabric (needle punching, weight per square meter of 90 g/m)²) The loops were made of polypropylene nonwoven fabric (SMS method, 40 g/m)²Fine fibers), a warmer was obtained in the same manner as in example 1, except that no slit was formed in the ear portion.

< comparative example 3>

The heating device was produced so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the first bag body sheet of the cover main body was a polyethylene terephthalate nonwoven fabric (needle punching, weight per square meter of 90 g/m)²) The suspension loops were made of polypropylene nonwoven fabric (SMS method, weight per square meter 40 g/m)²And a film layer at the center), a warmer was obtained in the same manner as in example 1.

< comparative example 4>

The heating device was produced so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the first bag body sheet of the cover main body was a polyethylene terephthalate nonwoven fabric (needle punching, weight per square meter of 90 g/m)²) Otherwise, a warmer was obtained in the same manner as in example 1.

< comparative example 5>

The heating devices were prepared so that La (mm), Lb (mm) and lc (mm) were as shown in Table 2, and the loops were made of polypropylene nonwoven fabric (SMS method, weight per square meter 40 g/m)²Fine fibers), a warmer was obtained in the same manner as in example 1, except that no slit was formed in the ear portion.

The following evaluations were carried out using the respective warming appliances obtained in the above manner. The results are shown in table 2.

(evaluation)

Expansibility of cover body

First, the pair of ear portions is peeled off from the warmer, and the cover main body is bisected at the longitudinal center line. Next, using one of the halved cover bodies, the load (N) when the cover body was elongated 4cm in the longitudinal direction was measured at a speed of 300mm/min by applying a stress while holding both longitudinal direction ends of the cover body with a chuck by the following apparatus. In addition, the heating element is excluded when the cover main body is clamped. The sample width was 80. + -.10 mm, and the chuck interval was adjusted to 80. + -.10 mm.

Device name: TENSILON universal tester

The manufacturer: orientec corporation

Extensibility of ear-hanging part

First, the pair of ear portions is peeled off from the warmer. When the cover main body is integrated with the ear portion (one continuous sheet), the inside of 5mm from the apex of the arc on the base end side of the hole 54L is cut off. Next, using one side ear portion, both end portions in the La direction of the ear portion were held by a chuck by the following device, and stress was applied to the ear portion, and the ear portion was elongated 100% in the La direction at a speed of 300mm/min, and thereafter, the tensile strength was measured at the time of recovery to a length corresponding to 10% of the original length. The sample width was 80. + -.10 mm, and the chuck interval was adjusted to 55. + -.15 mm.

Device name: TENSILON universal tester

The manufacturer: orientec corporation

Based on the obtained measurement results, the stress change rate (%) in the La direction of the ear portion was calculated from the following formula (1).

Evaluation of functionality

Each of the thermal devices was worn for 30 minutes by 10 skilled functional examiners, and the evaluation was performed according to the following criteria, and the average value of 10 digits was calculated.

[ pasting feeling ]

5: has good fitting feeling.

4: a slightly good fit was obtained.

3: has good fitting feeling.

2: has a slightly conformable feeling.

1: almost has no close feeling.

[ degree of oppression feeling ]

5: no oppressive feeling was observed at all.

4: there is little oppression.

3: there is no oppression feeling.

2: slightly oppressive.

1: has oppressive feeling.

[ Warm feeling (supine position) around the eyes ]

5: the warmth sensation around the eyes was sufficient.

4: the warming sensation around the eyes was slightly sufficient.

3: a warm sensation is felt around the eyes.

2: the warming sensation around the eyes was slightly insufficient.

1: the warmth sensation around the eyes is insufficient.

[ Warm feeling (lateral position) around the eyes ]

5: the warmth sensation around the eyes was sufficient.

4: the warming sensation around the eyes was slightly sufficient.

3: a warm sensation is felt around the eyes.

2: the warming sensation around the eyes was slightly insufficient.

1: there was no sensation of warmth around the eyes.

[ sense of relaxation ]

5: the feeling of relaxation is sufficient.

4: the sense of relaxation was slightly sufficient.

3: has relaxing effect.

2: the sense of relaxation is slightly insufficient.

1: there is no sense of relaxation.

The warming devices manufactured in example 2 and comparative example 1 were worn in a lateral recumbent position for 10 minutes at room temperature (20 ℃, 55%). The skin temperature of the face immediately after wearing the warmer for 10 minutes was measured using a thermostat.

The area at 38 ℃ or higher was calculated by image analysis, and the results were as follows: 31.8cm in example 2²On the other hand, the length of the sample was 10.6cm in comparative example 1²。

Claims

1. A cover, characterized in that,

the disclosed device is provided with: a mask body covering both eyes; a heating element provided in the cover main body; and a pair of ear loops joined to both longitudinal ends of the cover main body and held by the cover main body so as to cover both eyes of a wearer,

the following conditions are satisfied:

(i) the ear hook part has an opening part for hanging the ear, and when the maximum length of the opening part is La and the length from the end part of the opening part La on the cover main body side to the end part of the opening part La on the cover main body side is Lb, (La x 2+ Lb) < 285;

stress change rate { [ stress at 100% elongation ] - [ stress at 10% elongation recovered ]/stress at 100% elongation } × 100(1),

the unit of La and Lb is mm, the unit of stress is N, and the unit of the rate of change of stress is%.

2. The mask of claim 1,

let Lc be the length in the width direction at the center in the longitudinal direction of the cover main body,

Lc/(La x 2+ Lb) is 0.2 to 0.4,

the Lc is in mm.

3. The mask of claim 1,

the stress of the ear portion at 100% elongation in the La direction is 2N or more.

4. The cover according to any one of claims 1 to 3,

the cover body is elongated in the longitudinal direction by 4cm, and the stress is 10N or more.

5. The cover according to any one of claims 1 to 3,

the stress when the cover main body is elongated by 2cm in the longitudinal direction is less than 30N.

6. The cover according to any one of claims 1 to 3,

the percentage change in stress in the La direction of the ear portion represented by the formula (1) is 80% or less.

7. The cover according to any one of claims 1 to 3,

a stress change rate in the La direction of the ear portion represented by the following formula (2) is 35% or more and 60% or less,

stress change rate { [ stress at 50% elongation ] - [ stress at 5% elongation recovered ]/stress at 50% elongation } × 100 (2),

the unit of the stress is N and the unit of the rate of change of the stress is%.

8. The cover according to any one of claims 1 to 3,

the ear hanging parts are made of non-woven fabrics.

9. The cover according to any one of claims 1 to 3,

the ear hooking portions are respectively extended obliquely downward from the vicinity of both end portions in the longitudinal direction of the cover main body.

10. The cover according to any one of claims 1 to 3,

when the ear portion is opened outward from the cover main body, the ear portion has a figure of eight in plan view.

11. The cover according to any one of claims 1 to 3,

when the ear hook portion is opened outward from the cover main body, the opening portion extends obliquely downward with respect to the longitudinal direction of the cover main body.

12. The cover according to any one of claims 1 to 3,

the heating element is in a sheet shape.

13. The cover according to any one of claims 1 to 3,

the pair of heating elements are disposed so as to cover both eyes.

14. The cover according to any one of claims 1 to 3,

the heating element includes a heating portion and a housing for housing the heating portion therein.

15. The mask of claim 14,

the thickness of the heating part is more than 0.2mm and less than 5 mm.