JP2013087395A - Hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hood which includes an opening in the front so as to allow a wearer to look forward, prevents the head of the wearer from being wet due to strike of wind and rain against the head by covering the head therewith, keeps the head warm, and prevents the wearer from hardly looking forward due to the hood sagging.SOLUTION: A hood is formed by laminating oriented polyolefin resin sheets over a part from the vicinity of a parietal part rear side to the vicinity of a face opening of a hood body for covering the head of a wearer and including a face opening for exposing at least eyes of the wearer, wherein the oriented polyolefin resin sheets have a shape retention property having a bending and returning angle θ of not more than 20°, when measured by bending by 180° or 90°, releasing the bent part kept bending for one minite, or leaving the released part for five minutes.

Description

  The present invention relates to a hood that covers a head for purposes of wind protection, waterproofing, heat insulation, and the like.

  Traditionally, hoods have been used to prevent wind from hitting the head, rain from hitting the head, preventing the head from getting wet, and keeping the head warm. The resin sheet is formed so as to cover the wearer's head and to have an opening at the front so that the wearer can see the front.

  Since food is widely used, various improvements have been made so that it can be used more suitably. For example, when the hood is worn, the ear is covered with the hood so that it is difficult to hear the ear, and therefore, “a waterproof sound-permeable hood made of a waterproof material, and at least one of the portions facing the wearer's ear of the waterproof material” A waterproof sound-permeable hood comprising a waterproof sound-permeable means, wherein the waterproof sound-permeable means has a waterproof sound-permeable membrane with a sound transmission loss of 5 db or less "(for example, see Patent Document 1). In order to easily wear the glasses after wearing the hood, “a hood main body having a face opening that covers the head of the wearer and exposes at least the eyes of the wearer, and the face opening of the hood main body” Formed on both the left and right sides of the hood body, a cylindrical portion having a first opening portion and a second opening portion, the insertion portion leading from the front surface side to the back surface side of the hood body, and disposed on the back surface side of the hood body, and The first opening A cylindrical body that is connected to the insertion portion and guides the temples of the glasses inserted from the insertion portion to the back side of the hood main body, and the opening area of the second opening is defined by the first opening A hood characterized in that the opening area is equal to or greater than the opening area "(for example, see Patent Document 2). Furthermore, in order to prevent wind and rain more easily and reliably, “a rain poncho including a waterproof hood portion and a waterproof coat portion continuous to the waterproof hood portion, and the waterproof hood portion has a border frame at the periphery. A rain poncho comprising an edged waterproof face cover, wherein the edge frame includes a shape-retaining core member capable of bending and deforming at least a lower edge of the waterproof face cover. (For example, refer to Patent Document 3).

  Although the hood is suitable for each purpose, the hood body is made of a flexible cloth or synthetic resin sheet, so there is a drawback that the hood body hangs down and covers the face, making it difficult to see the front. It was. In the case of the rain poncho, it is possible to suppress the drooping of the hood body to some extent because the peripheral portion including the shape-maintaining core material that can be bent and deformed is provided with a waterproof face cover that is edged with a border frame, There is a drawback that the waterproof face cover is clouded by the breath of the wearer and the front is difficult to see.

JP 2010-070874 A JP 2011-075451 A JP 2011-127263 A

  In view of the above problems, an object of the present invention is a hood having an opening on the front so that the wearer can see the front, and wind and rain hit the head covering the wearer's head. An object of the present invention is to provide a hood that can prevent the head from getting wet and can keep the head warm, and the hood hangs down and does not become difficult to see the front.

That is, the present invention
[1] A hood body provided with a face opening that covers the wearer's head and exposes at least the eyes of the wearer is bent at 180 degrees or 90 degrees from near the top of the hood to near the face opening. A hood characterized by being laminated with a stretched polyolefin-based resin sheet having a shape-retaining property in which the folding return angle θ is 5 degrees or less when 5 minutes have passed since the release, ,
[2] Fold at 180 degrees or 90 degrees along the face opening in the vicinity of the face opening of the hood body, which covers the wearer's head and has a face opening that exposes at least the eyes of the wearer A hood characterized in that it is released after being held for 1 minute, and a stretched polyolefin resin sheet having a shape-retaining property in which both folding return angles θ are less than 20 degrees when 5 minutes have passed after release, are laminated,
About.

  The configuration of the hood of the present invention is as described above, and can be easily worn, the wearer can see the front, and the head is covered with wind and rain, or the head gets wet. Can be prevented, the head can be kept warm, and the hood does not hang down so that it is difficult to see the front.

It is a perspective view which shows an example of the food | hood of this invention. It is sectional drawing which shows an example of the food | hood of this invention. It is sectional drawing which shows the example from which the food | hood of this invention differs.

  The hood according to claim 1 covers a wearer's head and has a facial opening that exposes at least the eyes of the wearer. It is released after being bent for 1 minute and then released, and a stretched polyolefin resin sheet having a shape retention property in which the folding return angle θ is less than 20 degrees when 5 minutes have passed after release is laminated. And

  Next, a description will be given with reference to the drawings. FIG. 1 is a perspective view showing an example of the hood of the present invention. In the figure, reference numeral 1 denotes a hood main body, and the hood main body 1 includes a face opening 2 that covers the wearer's head (the top of the head, the temporal region, and the back of the head) and exposes at least the eyes of the wearer. is there. 3 is a through-hole for letting the string for fixing a hood main body to a wearer's neck pass. The through-hole 3 is formed by folding the lower end portion of the hood main body 1 and is formed so as to communicate with the lower end portion of the hood main body 1 from the right end portion to the left end portion. The hood main body 1 may be formed so as to cover the cheeks and neck. Further, it may be directly connected to a jacket, a raincoat or the like, or may be connectable to a jacket, a raincoat or the like by a button or a chuck.

  The material constituting the hood body is not particularly limited as long as it is a material generally used for clothes, raincoats, etc., for example, natural fibers such as cotton, hemp, silk, wool, polyacrylic fibers, polyester fibers, Examples thereof include woven fabrics and nonwoven fabrics manufactured from synthetic fibers such as polyamide fibers and waterproof fibers obtained by coating these fibers with rubber or synthetic resin, rubber sheets, polyethylene resin sheets, polypropylene resin sheets, polyamide resin sheets, and the like.

  The stretched polyolefin resin sheet is a shape-retaining material that is bent at 180 degrees or 90 degrees and held for 1 minute and then released, and the folding return angle θ is less than 20 degrees when 5 minutes have passed after the release. . Note that the bending return angle θ is an angle that spreads when a stretched polyolefin resin sheet folded at 180 degrees or 90 degrees has passed 5 minutes after opening, and is released after being folded at 180 degrees and held for 1 minute. The bending return angle θ when 5 minutes have passed after release is both 20 degrees or less. The bending angle of the stretched polyolefin resin sheet after 5 minutes after release is 20 degrees or less. Folds at 90 degrees, holds for 1 minute and then releases, and the folding return angle θ is less than 20 degrees when 5 minutes have passed since release. It means that the bending angle of the stretched polyolefin resin sheet is 110 degrees or less.

  The stretched polyolefin resin sheet has shape retainability, but the shape retainability is released after the stretched polyolefin resin sheet is bent at 180 degrees or 90 degrees in the direction perpendicular to the stretch direction and held for 1 minute. The folding return angle θ when 5 minutes have passed after release is both 20 degrees or less, preferably the 180-degree folding return angle θ is 20 degrees or less and the 90-degree folding return angle θ is less than 20 degrees, Preferably, the 180-degree folding return angle θ is 20 degrees or less and the 90-degree folding return angle θ is 15 degrees or less. If one of the bending return angles θ at the time of 180-degree and 90-degree bending, particularly the 90-degree bending return angle θ exceeds 20 degrees, sufficient shape retention may not be obtained.

  As the polyolefin-based resin constituting the stretched polyolefin-based resin sheet, any olefin-based resin having a film forming ability can be used. For example, a high-density polyethylene resin, a medium-density polyethylene resin, a low-density polyethylene resin, a linear low-density Polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-butene-1 copolymer, ethylene-pentene-1 copolymer, ethylene-hexene-1 copolymer, ethylene-octene-1 copolymer, ethylene -Vinyl acetate copolymer, ethylene- (meth) acrylic ester copolymer, ethylene-vinyl chloride copolymer, ethylene-propylene-butene copolymer, etc. High density polyethylene resin and polypropylene resin are preferred. used.

  When the weight average molecular weight of the polyolefin resin is less than 100,000, the polyolefin resin becomes brittle and the stretchability is lowered, or a stretched polyolefin resin sheet having sufficient mechanical strength or creep resistance is obtained. On the contrary, when it exceeds 500,000, the melt viscosity becomes high, the hot melt molding processability is lowered, and it becomes difficult to obtain a uniform sheet, and therefore 100,000 to 500,000 is preferable. In the present invention, the weight average molecular weight is a value measured by gel permeation chromatography (GPC).

The melt index (hereinafter referred to as MI) of the polyolefin resin is preferably from 0.1 to 20 (g / 10 minutes), more preferably from 0.2 to 10 (g / 10 minutes), which is excellent in film moldability. It is. MI is an index representing the melt viscosity of a thermoplastic resin specified in JIS K 7210. Furthermore, in the case of a high density polyethylene resin, 0.94 g / cm ³ or more is preferable because the mechanical strength does not improve even if the density is reduced even if the density is reduced.

  As the stretched polyolefin resin sheet, a stretched polyolefin resin sheet having a shape-retaining property in which a polyolefin resin sheet having a weight average molecular weight of 100,000 to 500,000 is uniaxially stretched at a stretch ratio of 5 times or more is preferable.

  In this case, the polyolefin resin is preferably a high-density polyethylene resin having an intrinsic viscosity [η] of less than 3.5 dl / g, such as glass fiber, talc, mica, calcium carbonate, magnesium hydroxide, alumina, zinc oxide, magnesium oxide, It is preferable to add inorganic machine fillers such as aluminum hydroxide, silica alumina, titanium oxide, calcium oxide, calcium silicate, basic magnesium carbonate, carbon fiber, and carbon black.

  The thickness of the polyolefin resin sheet before stretching is not particularly limited, but if it is too thick, stretching becomes difficult. Conversely, if it is too thin, the thickness of the polyolefin resin sheet after stretching becomes too thin. Since shape retainability deteriorates, 0.2 to 5.0 mm is desirable.

  The stretched polyolefin resin sheet that has been stretched may have a stretch ratio of 5 times or more and have shape retention, but is preferably 10 to 40 times. The stretching method may be any conventionally known method, such as a method of stretching while heating with a heater or hot air by a uniaxial stretching method such as a roll uniaxial stretching method or a zone uniaxial stretching method. .

  When stretching uniaxially to a high degree of 10 to 40 times, a multistage uniaxial stretching method in which uniaxial stretching is repeated a plurality of times is preferable. When performing multistage uniaxial stretching, the number of stretching is preferably 2 to 20 times, more preferably 3 to 15 times, still more preferably 4 to 10 times. When performing multi-stage stretching by a roll uniaxial stretching method, it is desirable to install a feeding pinch roll, a take-up pinch roll, and at least one, preferably a plurality of contact rolls that rotate at a constant speed between these rolls. By installing such a contact roll, uniform stretchability is improved and stable stretch molding can be performed.

  The contact roll performs uniaxial stretching by applying a frictional force to the polyolefin resin sheet without being pinched. Further, the contact roll may be connected to the feeding roll and / or the take-up roll by a connecting member made of a gear, a chain, a pulley, a belt, or a combination thereof.

  The uniaxial stretching temperature cannot be uniformly stretched when it is low, and the sheet melts and cuts when it is high. Therefore, the range of “melting point−60 ° C.” to the melting point of the polyolefin resin of the polyolefin resin sheet to be stretched is more preferable, It is “melting point−50 ° C.” to “melting point−5 ° C.” of the polyolefin resin.

  In order to improve the dimensional stability of the stretched polyolefin resin sheet, the stretched polyolefin resin sheet may be annealed at a temperature between “melting point−60 ° C.” and melting point of the polyolefin resin. If the annealing temperature is lowered, the dimensional stability will not improve, warping will occur if used for a long time, and if it is raised, the polyolefin resin will dissolve and the orientation will disappear and the tensile modulus, tensile strength, etc. will decrease. It is preferable to anneal at a temperature between the “melting point−60 ° C.” and the melting point of the resin.

  Annealing is a heat treatment in the production line. When annealing, the stretched polyolefin resin sheet is stretched if a large tension is applied, and it is not stretched or shrinks in a very small state. The length of the stretched polyolefin resin sheet in the stretching direction is preferably substantially unchanged, and it is preferable that no pressure is applied to the stretched polyolefin resin sheet. That is, it is preferable to anneal so that the length of the annealed stretched polyolefin resin sheet is 1.0 or less of the length of the stretched polyolefin resin sheet before annealing.

  Accordingly, when the stretched polyolefin resin sheet is continuously annealed while being moved in the heating chamber with a roll such as a pinch roll, the feed rate ratio of the polyolefin resin sheet on the inlet side and the outlet side is 1.0 or less. It is preferable to anneal with setting.

  The heating method at the time of annealing is not particularly limited, and examples thereof include a method of heating with hot air, a heater, a heating plate, hot water or the like. The time for annealing is not particularly limited, and varies depending on the thickness of the stretched polyolefin resin sheet and the annealing temperature, but is generally preferably 10 seconds or more, more preferably 30 seconds to 60 minutes, and still more preferably 1 to 20 Minutes.

  Further, as a different preferred stretched polyolefin resin sheet, a polyolefin resin sheet having a weight average molecular weight of 100,000 to 500,000 was rolled to a rolling ratio of 5 times or more, and then the total stretching ratio was uniaxially stretched to 10 to 40 times. A stretched polyolefin resin sheet may be mentioned.

  The thickness of the polyolefin-based resin sheet before rolling is not particularly limited, but if it is too thick, stretching becomes difficult, and in the rolling process, a large pressing force is required to crush the polyolefin-based resin sheet with a rolling roll. Take-up force is required, and uniform rolling in the width direction may be difficult due to bending of the rolling roll. Conversely, when too thin, the thickness of the polyolefin resin sheet after rolling becomes too thin and uniform rolling. Is not only difficult, but the rolling rolls may come into contact with each other to shorten the life of the rolling roll, so 0.2 to 5.0 mm is desirable.

  The polyolefin resin sheet is first rolled to a rolling ratio of 5 times or more. However, the rolling temperature cannot be uniformly rolled when the temperature is lowered, and melted and cut when the temperature is high. The range of “melting point −40 ° C.” to the melting point of the olefin resin of the polyolefin resin sheet is more preferable, and more preferably “melting point −30 ° C.” to “melting point −5 ° C.” of the olefin resin. In the present invention, the melting point refers to the maximum point of the endothermic peak that accompanies melting of the crystal, which is recognized when thermal analysis is performed with a differential scanning calorimeter (DSC).

  If the applied pressure (linear pressure) applied to the polyolefin resin sheet by the rolling roll is too small, it may not be possible to obtain a predetermined rolling magnification, and conversely if it is too large, not only will the bending of the rolling roll occur, Sliding easily occurs between the rolling roll and the raw sheet, and uniform rolling may be difficult. Therefore, the applied pressure is preferably 100 MPa to 3000 MPa, and more preferably 300 MPa to 1000 MPa.

  When the rolling ratio is less than 5 times, the effect of suppressing necking at the time of uniaxial stretching performed later cannot be obtained, high-strength uniaxial stretching cannot be performed, or the uniaxial stretching step Therefore, it is 5 times or more, preferably 7 times or more. There is no particular upper limit to the rolling ratio, but the higher the rolling ratio, the more load is applied to the rolling equipment, so 10 times or less is preferable. The rolling magnification is defined as (cross-sectional area of polyolefin resin sheet) / (cross-sectional area of polyolefin resin sheet after rolling), but the width of the polyolefin resin sheet hardly changes before and after rolling. (Thickness of resin sheet) / (thickness of polyolefin resin sheet after rolling).

  The rolled polyolefin resin sheet is then uniaxially stretched at a total stretch ratio of 10 to 40 times. The uniaxial stretching method is not particularly limited, and the above-described uniaxial stretching method may be adopted. Moreover, since the total draw ratio is 10 to 40 times, the uniaxial draw ratio may be determined so that the total draw ratio is within this range in consideration of the rolling ratio. Is not improved, it is preferably 1.3 times or more, more preferably 1.5 times or more, and still more preferably 1.8 times or more. Moreover, although an upper limit is not specifically limited, 4 times or less are preferable, More preferably, it is 3.5 times or less. The total draw ratio is a value obtained by multiplying the rolling ratio and the uniaxial draw ratio.

  Another preferred stretched polyolefin resin sheet is a stretched polyolefin resin sheet obtained by rolling a polyolefin resin sheet having a weight average molecular weight of 100,000 to 500,000 to a rolling ratio of 5 times or more. That is, even if it is not uniaxially stretched only by rolling, it is released after being bent at 180 degrees and 90 degrees and held for 1 minute, and the folding return angle θ when 5 minutes have elapsed after release is both 20 degrees or less. A stretched polyolefin resin sheet having shape retention can also be suitably used.

  The thickness of the polyolefin resin sheet before rolling is not particularly limited, but if it is too thick, a large pressing force and take-up force are required to crush the polyolefin resin sheet with a rolling roll in the rolling process. Uniform rolling in the width direction may be difficult due to roll deflection, etc. Conversely, if too thin, not only will the thickness of the polyolefin resin sheet after rolling become too thin, making uniform rolling difficult. Since the rolling rolls may come into contact with each other and the life of the rolling roll may be shortened, 0.2 to 5.0 mm is desirable.

  In order to improve the dimensional stability of the stretched polyolefin resin sheet stretched by the stretching method including the rolling step, the stretched polyolefin resin sheet has a melting point of “melting point−60 ° C.” to the melting point of the polyolefin resin, and the rolling temperature. You may anneal at the following temperature.

  If the annealing temperature is lowered, the dimensional stability will not improve, warping will occur if used for a long time, and if it is raised, the polyolefin resin will dissolve and the orientation will disappear and the tensile modulus, tensile strength, etc. will decrease. It is preferable to anneal the resin at a temperature ranging from “melting point −60 ° C.” to the melting point and not higher than the rolling temperature. Other annealing methods are as described above.

  The annealed stretched polyolefin resin sheet may be further aged in the temperature range from 40 ° C. to the melting point of the polyolefin resin. The dimensional stability of the polyolefin resin sheet annealed by aging becomes more excellent.

  Aging is not a continuous treatment in the production line, but it is a relatively long time (minutes, time units) for heat treatment of single-wafers, scrolls, etc., once processed, such as cut winding, of a stretched polyolefin resin sheet. It means to lay down carefully and heat-treat. The aging temperature is the same as that left at room temperature when the temperature is low, and when it is high, it is thermally deformed, so the temperature range is from 40 ° C. to the melting point of the polyolefin resin. Even if an effect does not increase, 12 hours-7 days are preferable.

  The thickness of the stretched polyolefin resin sheet is not particularly limited. However, when the thickness is reduced, the shape-retaining property is lowered. When the thickness is increased, it is difficult to use as a hood, so 0.04 to 2 mm is preferable, and more preferably 0.05. ~ 1 mm.

  If necessary, heat treatment agent, heat resistance improver, light stabilizer, ultraviolet absorber, antioxidant, antistatic agent, impact modifier, antifogging agent, flame retardant, colorant, etc. May be added.

  The stretched polyolefin resin sheet may be a laminated stretched polyolefin resin sheet obtained by laminating two or more of the above stretched polyolefin resin sheets. The stretching directions of the stretched polyolefin resin sheets laminated may be the same or different.

  As a laminated stretched polyolefin resin sheet in which a plurality of stretched polyolefin resin sheets having different stretching directions are laminated, for example, a laminated stretched polyolefin resin in which two stretched polyolefin resin sheets are laminated so that the stretching directions are orthogonal to each other Sheet, laminated stretched polyolefin resin sheet in which three stretched polyolefin resin sheets are laminated by shifting the stretching direction by 60 degrees, and laminate in which four stretched polyolefin resin sheets are laminated by shifting the stretching direction by 45 degrees Examples thereof include a stretched polyolefin resin sheet.

  The stretched polyolefin-based resin sheet has shape retention when bent in a direction perpendicular to the stretching direction, and when two or more stretched polyolefin-based resin sheets having different stretching directions are bonded, two or more stretched polyolefins The shape-retaining property in an arbitrary direction is improved by the stretching direction of the resin-based resin sheet, and the stretched polyolefin-based resin sheet is hardly broken even if the stretching direction and the bending direction of the stretched polyolefin-based resin sheet are the same.

  The method of laminating the stretched polyolefin resin sheet may be any conventionally known method, for example, a method in which the second polyolefin resin sheet is supplied between the stretched polyolefin resin sheets and thermally bonded, Examples thereof include a method in which a second polyolefin resin is melt-extruded and bonded and laminated between stretched polyolefin resin sheets.

  As the second polyolefin resin, since the stretched polyolefin resin sheet is adhered, the same type of polyolefin resin as that constituting the stretched polyolefin resin sheet is preferable. Since it acts as an adhesive when heat-sealing, a polyolefin resin having a melting temperature lower than the melting temperature of the polyolefin resin constituting the stretched polyolefin resin sheet is preferable, and a linear low density polyethylene resin is preferable.

  The thickness of the second polyolefin resin (sheet) is not particularly limited. However, if the thickness is too thin, it is difficult to adhere, and if it is too thick, the shape-retaining property of the stretched polyolefin resin sheet is lowered. ˜80 μm, preferably 5˜20 μm.

  The laminated stretched polyolefin resin sheet is also bent at 180 degrees and 90 degrees so as to be perpendicular to the stretching direction of at least one stretched polyolefin resin sheet of the laminated stretched polyolefin resin sheets. It is released after being held for a minute, and has a shape-retaining property in which the folding return angle θ is 5 degrees or less when 5 minutes have passed after the release.

  The thickness of the stretched polyolefin resin sheet to be laminated is not particularly limited, but 0.02 to 0.5 mm is preferable because the shape retainability decreases as the thickness decreases. Since the laminated stretched polyolefin resin sheet is formed by laminating the above stretched polyolefin resin sheet, a thick sheet can be produced. However, if it is too thick, it becomes difficult to bend, shape retention is lowered, and it becomes difficult to use as a hood. 04-2 mm is preferable, More preferably, it is 0.05-1 mm.

  The stretched polyolefin resin sheet is laminated from the vicinity of the back of the top of the hood body to the vicinity of the face opening. The width and number of stretched polyolefin resin sheets are not particularly limited. For example, many (about 5 to 20) thin elongated bodies having a width of about 1 to 3 mm may be laminated substantially in parallel. ~ 4 wide elongate bodies having a width of about 4 to 10 mm may be stacked substantially in parallel.

  Further, the long body may be woven and formed into a net shape, and the at least one stretched polyolefin resin sheet may be laminated so as to reach from the back of the top of the hood body to the vicinity of the face opening. Further, the stretched polyolefin resin sheet may be laminated not only from the vicinity of the back of the top of the hood body to the vicinity of the face opening, but also from the vicinity of the back of the hood body to the vicinity of the face opening. The shape retention of the hood body is further improved, and it is difficult for it to sag during use.

  The method of laminating is not particularly limited, for example, a method of adhering with a double-sided adhesive tape, a method of adhering with an adhesive, a method of adhering with an adhesive such as a hot melt adhesive, an isocyanate-based instantaneous adhesive, a reactive adhesive, etc. , A method of heat-sealing, a method of sewing, a method of creating a hood main body with two or more sheets and inserting between the sheets.

  The hood according to claim 2 covers the head of the wearer and is 180 degrees or 90 degrees along the face opening in the vicinity of the face opening of the hood body provided with a face opening that exposes at least the eyes of the wearer. It is released after being bent for 1 minute and then released, and a stretched polyolefin resin sheet having a shape retention property in which the folding return angle θ is less than 20 degrees when 5 minutes have passed after release is laminated. Features.

  The hood is the same as the hood according to claim 1 except that a stretched polyolefin resin sheet having shape retaining property is laminated along the face opening in the vicinity of the face opening of the hood main body.

  The stretched polyolefin resin sheet is laminated along the face opening in the vicinity of the face opening of the hood body, but it is preferred that 50% or more is laminated from the right end to the left end of the face opening. More preferably, they are laminated. In addition, when not laminated | stacked entirely, it is preferable to laminate | stack symmetrically.

  Next, examples of the present invention will be described with reference to the drawings. However, the present invention is not limited to the examples.

Example 1
FIG. 2 is a cross-sectional view showing the hood of the first embodiment. In the figure, reference numeral 1 denotes a hood main body provided with a face opening 2 that covers the wearer's head and exposes at least the eyes of the wearer, and an outer layer 11 and an inner layer 12 made of a polyester fiber woven fabric are laminated on the top of the head. In addition, one stretched polyolefin resin sheet 4 is laminated between the outer layer 11 and the inner layer 12 from the vicinity of the rear of the top of the head to the vicinity of the opening of the face. The other part of the hood body 1 is formed from a woven fabric of polyester fibers. The stretched polyethylene resin sheet 4 had a width of 10 mm, a thickness of 0.8 mm, and a length of 150 mm, and the stretching direction was the length direction.

  The hood is put on the head, the stretched polyolefin resin sheet 4 is deformed by hand so as to be along the top of the head, and the hood is fixed to the head with a string (not shown) inserted through the through hole 3, and then the bicycle Then, I drove for about 30 minutes at a speed of about 15 km / hr, but the hood did not sag or slip and the front was not visible.

In addition, the manufacturing method of the extending | stretching polyolefin-type resin sheet is as follows.
A high-density polyethylene resin (manufactured by Nippon Polyethylene Co., Ltd.) having a weight average molecular weight (Mw) of 330,000 and a melting point of 135 ° C. is supplied to the same-direction biaxial kneading extruder (manufactured by Plastic Engineering Laboratory) and melt kneaded at a resin temperature of 200 ° C. After that, the melt-kneaded material was formed into a sheet having a width of 350 mm and a thickness of 11.3 mm using a calender molding machine in which the roll temperature was controlled at 110 ° C. to obtain a polyethylene resin sheet.

  The obtained polyethylene resin sheet was rolled at a rolling magnification of 10.3 times using a rolling molding machine (manufactured by Sekisui Koki Co., Ltd.) heated to 125 ° C. to obtain a rolled polyethylene resin sheet having a width of 350 mm and a thickness of 1.10 mm. It was. The obtained rolled polyethylene resin sheet was subjected to a multistage stretching of 1.72 times in a hot air heating type multistage stretching apparatus (manufactured by Kyowa Engineering) heated to 110 ° C., a total stretching ratio of 18 times, a width of 280 mm, and a thickness of 0 A stretched polyethylene resin sheet of .8 mm was obtained.

  The obtained stretched polyethylene resin sheet was supplied with a pinch roll to a hot air heating tank with a line length of 19.25 m set at 125 ° C. at an inlet speed of 2.75 m / min, and an outlet speed of 2.75 m / min. Set to, and then subjected to primary annealing for 7 minutes, followed by secondary annealing in the same manner to obtain an annealed stretched polyethylene resin sheet, which is then fed to a constant temperature bath at 60 ° C. and aged for 24 hours, An aged stretched polyethylene resin sheet was obtained.

  The obtained stretched polyethylene resin sheet was cut into a width of 10 mm and a length of 150 mm, bent at 180 degrees and 90 degrees so as to be orthogonal to the stretching direction of the stretched polyethylene resin sheet, held for 1 minute, and then released. When the bending return angle θ was measured when minutes passed, it was 4 to 7 degrees, respectively.

(Example 2)
FIG. 3 is a cross-sectional view showing the hood of the second embodiment. In the figure, reference numeral 1 denotes a hood body formed of a woven fabric of polyester fiber, which is provided with a face opening 2 that covers the wearer's head and exposes at least the eyes of the wearer. One laminated stretched polyolefin resin sheet 5 is laminated with an acrylic adhesive from the lower right end to the lower left end along the face opening 2 near the portion 2. The hood body 1 is formed from a woven fabric of polyester fibers. The laminated stretched polyethylene resin sheet 5 had a width of 10 mm, a thickness of 0.83 mm, and a length of 600 mm, and the stretched direction of one stretched polyethylene resin sheet was the length direction.

  The above hood is put on the head, the stretched polyolefin resin sheet 5 is deformed by hand so as to be along the face, and the hood is fixed to the head with a string (not shown) inserted through the through-hole 3. The car ran for about 30 minutes at a speed of about 15 km / hr, but the hood did not sag or slip and the front was not visible.

In addition, the manufacturing method of a lamination extending | stretching polyolefin-type resin sheet is as follows.
A high-density polyethylene resin (manufactured by Nippon Polyethylene Co., Ltd.) having a weight average molecular weight (Mw) of 330,000 and a melting point of 135 ° C. is supplied to the same-direction biaxial kneading extruder (manufactured by Plastic Engineering Laboratory) and melt kneaded at a resin temperature of 200 ° C. After that, the melt-kneaded material was formed into a sheet having a width of 350 mm and a thickness of 5.66 mm by a calender molding machine in which the roll temperature was controlled at 110 ° C. to obtain a polyethylene resin sheet.

  The obtained polyethylene resin sheet is rolled to 10.3 times using a rolling molding machine (manufactured by Sekisui Koki Co., Ltd.) heated to 125 ° C. to obtain a rolled polyethylene resin sheet having a width of 350 mm and a thickness of 0.55 mm. It was. The obtained rolled polyethylene resin sheet was subjected to a multistage stretching of 1.72 times in a hot air heating type multistage stretching apparatus (manufactured by Kyowa Engineering) heated to 110 ° C., a total stretching ratio of 18 times, a width of 280 mm, and a thickness of 0 A 4 mm stretched polyethylene resin sheet was obtained.

  The obtained stretched polyethylene resin sheet was supplied with a pinch roll to a hot air heating tank with a line length of 19.25 m set at 125 ° C. at an inlet speed of 2.75 m / min, and an outlet speed of 2.75 m / min. Set to, and then subjected to primary annealing for 7 minutes, followed by secondary annealing in the same manner to obtain an annealed stretched polyethylene resin sheet, which is then fed to a constant temperature bath at 60 ° C. and aged for 24 hours, An aged stretched polyethylene resin sheet was obtained.

  The two stretched polyethylene resin sheets obtained were laminated so that their stretching directions were orthogonal to each other, and a linear low-density polyethylene film having a thickness of 0.03 mm (made by Sekisui Film Industry Co., Ltd., trade name “2TN”) therebetween. ) Was supplied to a hot press machine and pressed for 15 minutes under the conditions of a heating temperature of 120 ° C. and a pressure of 4.4 MPa to obtain a two-layer laminated stretched polyethylene resin sheet having a thickness of 0.83 mm.

  The obtained laminated stretched polyethylene resin sheet was cut into a width of 10 mm and a length of 150 mm, bent at 120 degrees and 90 degrees so as to be orthogonal to the stretching direction of one stretched polyethylene resin sheet, held for 1 minute, and then released. The bending return angle θ after 5 minutes from the release was measured and found to be 17 to 19 degrees, respectively.

  The hood of the present invention can be suitably used when it is raining, riding a bicycle or a motorcycle.

DESCRIPTION OF SYMBOLS 1 Hood body 2 Face opening 3 Through-hole 4 Stretched polyolefin resin sheet 5 Stretched polyolefin resin sheet

Claims (2)

  Covering the wearer's head and holding it at 180 ° or 90 ° from the back of the top of the hood body with a face opening that exposes at least the eyes of the wearer to the vicinity of the face opening and holding for 1 minute A hood characterized in that a stretched polyolefin resin sheet having a shape-retaining property in which a folding return angle θ is 20 degrees or less when 5 minutes have passed after release is laminated.   Cover the wearer's head and bend it at 180 degrees or 90 degrees along the face opening in the vicinity of the face opening of the hood body with a face opening that exposes at least the eyes of the wearer and hold for 1 minute The hood is characterized by being laminated with a stretched polyolefin resin sheet having a shape-retaining property in which the bending return angle θ is 5 degrees or less when 5 minutes have passed after the release.

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