Disposable protective cap and method for manufacturing the same

Abstract

To provide a disposable protective cap which has a high degree of freedom corresponding to a hairstyle of a wearer, has good hair holding property, suppresses stuffiness, and has a good wearing feeling, and to provide a method for manufacturing the disposable protective cap.SOLUTION: There is provided a disposable protective cap, including: a protective part that covers an entire wearer's head and an outer peripheral part that is fixed to the wearer's head by tightening a circumference of the wearer's head from a forehead to a back of the head with an elastic member, wherein a sheet used for the protective part is a nonwoven fabric having a basis weight of 10 g / m2 or more and 20 g / m2 or less, and the outer peripheral part has gathers formed by contraction of the elastic member, and a stress when the outer peripheral part is stretched 2.0 times is 1.5 N or more and 2.5 N or less, and there is provided a method for manufacturing the disposable protective cap.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a disposable protective cap and a method for making the disposable protective cap. [Background technology]

[0002] There are protective caps worn on the head in food factories, hospitals, etc.

[0003] This type of protective cap must be capable of retaining hair and other debris within the cap to prevent hair and other debris from falling onto the floor and becoming mixed in with products and other items.

[0004] There are several types of caps of this kind, but most are disposable after a single use, and they are required to be inexpensive to manufacture.

[0005] As a prior art document for such disposable protective caps, for example, Patent Document 1 discloses a dustproof hair cap made of a fibrous nonwoven fabric whose main component is a thermoplastic elastomer resin, characterized in that the fibrous nonwoven fabric satisfies the following: (1) the average fiber diameter of the fibers constituting the fibrous nonwoven fabric is 10 μm or less, (2) 15 to 80% of the number of fibers are composed of fibers fused together in bundles of two or more, and (3) the 50% elongation recovery rate is 60% or more. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 4104857 Summary of the Invention [Problem to be solved by the invention]

[0007] However, depending on the wearer's hairstyle, even the protective cap described in Patent Document 1 may not be able to contain the hair. Simply lengthening the elastic member around the head of the protective cap can cause the protective cap to fit loosely, reducing its ability to hold hair, etc. Furthermore, increasing the elongation ratio of the elastic member around the head increases the tightening force when worn, resulting in a worsening fit.

[0008] Therefore, there is a demand for a disposable protective cap that has a high degree of freedom in adapting to the wearer's hairstyle, has good hair retention, prevents stuffiness, and is comfortable to wear.

[0009] The present invention has been made in consideration of the above circumstances, and aims to provide a disposable protective cap that has a high degree of freedom in adapting to the wearer's hairstyle, has good hair retention, reduces stuffiness, and is comfortable to wear, as well as a method for manufacturing a disposable protective cap. [Means for solving the problem]

[0010] The inventors have conducted extensive research and have come up with the invention of a disposable protective cap having a protective part that covers the entire head of a wearer and an outer peripheral part that is fixed to the head of the wearer by tightening an elastic member around the head from the forehead to the back of the head, in which by adjusting the basis weight of the sheet and the stress when the outer peripheral part is stretched within respective predetermined numerical ranges, it is possible to provide a disposable protective cap that has a high degree of freedom in accommodating the wearer's hairstyle, has good hair retention, is suppressed from becoming stuffy, and is comfortable to wear.

[0011] (1) A first aspect of the present invention is a disposable protective cap having a protective part that covers the entire head of a wearer and an outer peripheral part that is fixed to the head of the wearer by tightening the circumference of the head from the forehead to the back of the head with an elastic member, and the sheet used for the protective part has a basis weight of 10 g / m 2 More than 20g / m 2The disposable protective cap is made of the following nonwoven fabric, wherein the outer peripheral portion has gathers formed by contraction of the elastic member, and the stress when the outer peripheral portion is stretched 2.0 times is 1.5 N or more and 2.5 N or less.

[0012] (2) A second aspect of the present invention is a disposable protective cap according to (1), characterized in that the elastic member contains one or more materials selected from polyurethane rubber, ethylene propylene rubber, natural rubber, and nitrile rubber, the thickness of the elastic member is 10,000 dtex or more and 15,000 dtex or less, and the elongation ratio of the elastic member is 2.7 times or more and 3.4 times or less.

[0013] (3) A third aspect of the present invention is a disposable protective cap according to (1) or (2), characterized in that the stress when the outer peripheral portion is stretched 1.5 times is 0.5 N or more and 1.5 N or less.

[0014] (4) A fourth aspect of the present invention is a disposable protective cap according to any one of (1) to (3), characterized in that two or more of the elastic members are used in one disposable protective cap, and the distance between the elastic members is 2.5 mm or more and 10 mm or less.

[0015] (5) A fifth aspect of the present invention is a disposable protective cap according to any one of (1) to (4), characterized in that the number of pleats of the gathers is 35 or more and 45 or less.

[0016] (6) A sixth aspect of the present invention is a disposable protective cap according to any one of (1) to (5), characterized in that a temporary adhesive portion is provided at a position not less than 3 cm and not more than 7 cm from one end side of the elastic member.

[0017] (7) A seventh aspect of the present invention is a method for manufacturing a disposable protective cap, comprising the steps of: folding a substantially rectangular sheet having a substantially strip-shaped elastic member adhered in a stretched state to each of its two side ends into an accordion-like shape along a folding line extending parallel to the stretch direction of the elastic member; sealing both ends of the folded sheet, causing the elastic member to contract and form gathers; and unfolding the sheet to form a protective portion, and the elastic member becoming annular to form an outer periphery. [Effects of the Invention]

[0018] According to the present invention, it is possible to provide a disposable protective cap that has a high degree of freedom in adapting to the wearer's hairstyle, has good hair retention, reduces stuffiness, and is comfortable to wear, as well as a method for manufacturing a disposable protective cap. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a side view of a wearer wearing a disposable protective cap according to the present embodiment. FIG. [Figure 2] 1A to 1C are diagrams illustrating a manufacturing process of a disposable protective cap according to the present embodiment. [Figure 3] 10A and 10B are diagrams showing a sheet and an elastic member used in a disposable protective cap according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, a mode for carrying out the present invention (hereinafter simply referred to as "the present embodiment") will be described in detail. The following present embodiment is an example for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be carried out by appropriately modifying it within the scope of its gist.

[0021] In the drawings, the same elements are denoted by the same reference numerals, and redundant explanations will be omitted. Furthermore, unless otherwise specified, the positional relationships, such as up, down, left, and right, are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to those shown in the drawings.

[0022] <Disposable protective cap> As shown in Figure 1, which shows a side view of the wearer, the disposable protective cap 1 of this embodiment has a protective part 2 that covers the entire head of the wearer, and an outer peripheral part 3 that is fixed to the wearer's head by tightening the circumference of the head from the forehead to the back of the head with an elastic member 20. The stress when the outer peripheral portion 3 is stretched 2.0 times is preferably 1.5 N to 2.5 N, and more preferably 1.5 N to 1.8 N. If the stress is less than 1.5 N, the outer peripheral portion 3 does not tightly fasten, and depending on the wearer's hairstyle, the wearer's hair is likely to come out of the disposable protective cap 1 while working, reducing the wearer's freedom of hairstyle. If the stress exceeds 2.5 N, the outer peripheral portion 3 tightly fastens, resulting in a poor wearing comfort and making the inside of the disposable protective cap 1 prone to becoming stuffy.

[0023] Furthermore, it is preferable that the stress when the outer peripheral portion 3 is stretched 1.5 times is 0.5 N or more and 1.5 N or less. By having the stress when stretched 1.5 times within the above numerical range, the disposable protective cap 1 can be made to have a higher degree of freedom in adapting to the wearer's hairstyle, to suppress stuffiness, and to be comfortable to wear. can.

[0024] <Manufacturing method of disposable protective caps> 2 is a diagram showing the manufacturing process of the disposable protective cap 1 according to this embodiment. Hereinafter, the manufacturing method of the disposable protective cap 1 will be described with reference to FIG.

[0025] (sheet) 2(a), which shows the initial state, sheet 10 is a substantially rectangular sheet with substantially strip-shaped elastic members 20 adhered in a stretched state to one of both side edges, and is used for protective part 2. In this case, the direction of expansion and contraction of elastic members 20 is designated as L, and the direction perpendicular to direction L is designated as H. It is preferable that the width of sheet 10 (dimension in direction L) is 510 mm or more and 640 mm or less, and the length of sheet 10 (dimension in direction H) is 450 mm or more and 600 mm or less. The sheet 10 has a basis weight of 10 g / m 2 More than 20g / m 2 The nonwoven fabrics are as follows. As the nonwoven fabric, SB (spunbond) nonwoven fabric or SMS (spunbond / meltblown / spunbond) nonwoven fabric can be used, but spunbond nonwoven fabric, which has both breathability and strength, is particularly preferred. Furthermore, polypropylene is preferred as the material.

[0026] (Expandable member) The elastic member 20 preferably contains one or more materials selected from polyurethane rubber, ethylene propylene rubber, natural rubber, and nitrile rubber, with polyurethane rubber being more preferred. The thickness of the elastic member 20 is preferably 10,000 dtex or more and 15,000 dtex or less, and more preferably 12,000 dtex or more and 14,000 dtex or less. The elongation ratio of the elastic member 20 is preferably 2.7 times or more and 3.4 times or less. By selecting the material of the elastic member 20 from the above materials and by making the thickness and elongation ratio both within the above numerical ranges, it is possible to obtain a disposable protective cap 1 that is comfortable to wear and prevents stuffiness. The extension ratio is calculated as follows: extension ratio = (length of the extended elastic member 20 / length of the original elastic member 20).

[0027] Next, in Fig. 2(b) showing the first step, the sheet 10 is folded in an accordion shape along folding lines 11 extending parallel to the stretch direction L of the stretchable member 20 (folded in the direction H). At this time, it is preferable to fold the sheet in an accordion shape so that the number of ridges is 8 to 12.

[0028] 2(c), which shows the second step, when the sheet 10 is folded, both ends (both ends in the direction L) are sealed (sealed portions 21 are formed at both ends), causing the elastic member 20 to contract and form gathers 22 (i.e., when the outer circumferential portion 3, which will be described later, is formed, the outer circumferential portion 3 has gathers 22 formed by the contraction of the elastic member 20). In this case, the number of pleats in the gathers 22 is preferably 35 or more and 45 or less. By keeping the number of pleats in the gathers 22 within the above numerical range, the disposable protective cap 1 can be made to have a greater degree of freedom in accommodating the wearer's hairstyle, have good hair retention, and be comfortable to wear. When a plurality of elastic members 20 are used, the number of pleats of the gathers 22 is the total number of pleats of the gathers 22 of all of the elastic members 20. Furthermore, any sealing method commonly used in nonwoven fabric products, such as heat sealing or sealing by covering both ends with a hot melt adhesive, can be used for the sealed portion 21 without any particular restrictions.

[0029] Finally, in the third step, the folded sheet 10 is unfolded, so that the sheet 10 forms the protective portion 2, and the elastic member 20 becomes annular to form the outer peripheral portion 3, thereby completing the disposable protective cap 1 as shown in Figure 1. 2, two elastic members 20 are used for one disposable protective cap 1, but it is preferable that two or more elastic members 20 are used for one disposable protective cap 1, and in that case, the distance between the elastic members 20 is preferably 2.5 mm or more and 10 mm or less (not shown). By having the distance within the above numerical range, the disposable protective cap 1 can be made to have a higher degree of freedom in accommodating the wearer's hairstyle, to be less stuffy, and to be comfortable to wear.

[0030] As shown in FIG. 3, in a disposable protective cap 1 according to another embodiment, a temporary adhesive portion 23 may be provided at a position 3 cm to 7 cm from one end of the elastic member 20. When the sheet 10 is unfolded with the temporary adhesive portion 23 provided, the sheet 10 between the temporary adhesive portion 23 and one of the sealing portions 21 is not unfolded, and a portion of the protective portion 2 is not formed. However, if the user puts on the disposable protective cap 1, for example, by breaking the temporary adhesive portion 23 after wearing the cap and expanding the hair storage portion (protective portion 2), the disposable protective cap 1 can be obtained with greater flexibility in accommodating the wearer's hairstyle, for example, when the user gathers hair at the back of the head. In this case, the distance from one end of the elastic member 20 is the distance when the elastic member 20 forms gathers 22. Preferably, the sheet 10 and the elastic member 20 are bonded at the temporary adhesive portion 23 by heat sealing.

[0031] As described above, according to this embodiment, it is possible to provide a disposable protective cap 1 and a method for manufacturing a disposable protective cap 1 that have a high degree of freedom in adapting to the wearer's hairstyle, have good hair retention, reduce stuffiness, and are comfortable to wear. [Example]

[0032] The present invention will be explained in more detail with reference to the following examples and comparative examples, but the present invention is not limited to these examples in any way.

[0033] Disposable protective caps for Examples 1 to 3 and Comparative Examples 1 and 2 were produced under the conditions shown in Table 1, and the following evaluations were carried out. Note that parameters other than those for the evaluations below were measured according to the standards or measurement methods described above. The material of the protective part (sheet) was polypropylene for both SB (spunbond) nonwoven fabric and SMS (spunbond / meltblown / spunbond) nonwoven fabric.

[0034] (hair retention) A monitor survey was conducted with 10 people (including 5 who had their hair tied back) to determine the hair retention of disposable protective caps. After completing the required tasks, each person rated the hair retention status inside the cap on a 3-point scale: good, good, or poor, and the overall evaluation was determined as follows: ◎: 6 or more people in good condition 〇: Three or more people in good condition ×: Bad: 1 or more people / Good: 2 or less people

[0035] (Hair storage) A monitor survey was conducted with 10 people (including 5 who had their hair tied back) to assess the hair containment of disposable protective caps. When wearing the cap, each person rated the hair containment condition on a 3-point scale: good, good, or poor, and the overall evaluation was determined as follows: ◎: Good condition for 8 or more people 〇: More than 6 people are in good condition ×: 2 or more people with poor performance / 5 or less people with good performance

[0036] (Fit) A monitor survey was conducted on 10 people (including 5 who had their hair tied back) to assess the wearing comfort of disposable protective caps. Each person rated the tightness of the cap on their head during a given task on a 3-point scale: good, good, or bad, and the overall evaluation was determined as follows: ◎: 6 or more people in good condition 〇: Three or more people in good condition ×: Bad: 1 or more people / Good: 2 or less people

[0037] (Hard to get stuffy) A monitor survey was conducted on 10 people (including 5 who had their hair tied back) to determine the sweat resistance of disposable protective caps. They performed a set task for 3 hours while wearing the cap, and after the task, each person rated the sweatiness of their head on a 3-point scale: good, good, or bad. The overall evaluation was determined as follows: ◎: 5 or more people in good condition 〇: Three or more people in good condition ×: Bad: 1 or more people / Good: 2 or less people

[0038] Table 1 shows the conditions and evaluation results for each example and comparative example.

[0039] [Table 1]

[0040] From the above, it was at least confirmed that this example provides a disposable protective cap that has a high degree of freedom in adapting to the wearer's hairstyle, has good hair retention, prevents stuffiness, and is comfortable to wear. [Explanation of symbols]

[0041] 1 disposable protective cap 2 Protection section 3 Outer periphery 10 sheets 11 Folding lines 20 Elastic member 21 Seal part 22 Gather 23 Temporary adhesive part

Claims

1. A disposable protective cap having a protective part that covers the entire head of a wearer and an outer peripheral part that is fixed to the head of the wearer by tightening the circumference of the head from the forehead to the back of the head with an elastic member, The sheet used for the protective part has a basis weight of 10 g / m ２ 20g / m or more ２ The following nonwoven fabrics: the outer periphery has gathers formed by contraction of the elastic member, A disposable protective cap, characterized in that a temporary adhesive portion is provided at a position 3 cm to 7 cm from one end side of the elastic member.

2. the elastic member includes one or more materials selected from polyurethane rubber, ethylene propylene rubber, natural rubber, and nitrile rubber; 2. The disposable protective cap according to claim 1, wherein the thickness of the elastic member is 10,000 dtex or more and 15,000 dtex or less.

3. 3. The disposable protective cap according to claim 1, wherein two or more of the elastic members are used in one disposable protective cap, and the distance between the elastic members is 2.5 mm or more and 10 mm or less.

4. 4. The disposable protective cap according to claim 1, wherein the number of pleats of the gathers is 35 or more and 45 or less.

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